drivers/scsi/lpfc/lpfc_init.c

   1 /*******************************************************************
   2  * This file is part of the Emulex Linux Device Driver for         *
   3  * Fibre Channel Host Bus Adapters.                                *
   4  * Copyright (C) 2004-2011 Emulex.  All rights reserved.           *
   5  * EMULEX and SLI are trademarks of Emulex.                        *
   6  * www.emulex.com                                                  *
   7  * Portions Copyright (C) 2004-2005 Christoph Hellwig              *
   8  *                                                                 *
   9  * This program is free software; you can redistribute it and/or   *
  10  * modify it under the terms of version 2 of the GNU General       *
  11  * Public License as published by the Free Software Foundation.    *
  12  * This program is distributed in the hope that it will be useful. *
  13  * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND          *
  14  * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,  *
  15  * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE      *
  16  * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
  17  * TO BE LEGALLY INVALID.  See the GNU General Public License for  *
  18  * more details, a copy of which can be found in the file COPYING  *
  19  * included with this package.                                     *
  20  *******************************************************************/
  21
  22 #include <linux/blkdev.h>
  23 #include <linux/delay.h>
  24 #include <linux/dma-mapping.h>
  25 #include <linux/idr.h>
  26 #include <linux/interrupt.h>
  27 #include <linux/kthread.h>
  28 #include <linux/pci.h>
  29 #include <linux/spinlock.h>
  30 #include <linux/ctype.h>
  31 #include <linux/aer.h>
  32 #include <linux/slab.h>
  33 #include <linux/firmware.h>
  34
  35 #include <scsi/scsi.h>
  36 #include <scsi/scsi_device.h>
  37 #include <scsi/scsi_host.h>
  38 #include <scsi/scsi_transport_fc.h>
  39
  40 #include "lpfc_hw4.h"
  41 #include "lpfc_hw.h"
  42 #include "lpfc_sli.h"
  43 #include "lpfc_sli4.h"
  44 #include "lpfc_nl.h"
  45 #include "lpfc_disc.h"
  46 #include "lpfc_scsi.h"
  47 #include "lpfc.h"
  48 #include "lpfc_logmsg.h"
  49 #include "lpfc_crtn.h"
  50 #include "lpfc_vport.h"
  51 #include "lpfc_version.h"
  52
  53 char *_dump_buf_data;
  54 unsigned long _dump_buf_data_order;
  55 char *_dump_buf_dif;
  56 unsigned long _dump_buf_dif_order;
  57 spinlock_t _dump_buf_lock;
  58
  59 static void lpfc_get_hba_model_desc(struct lpfc_hba *, uint8_t *, uint8_t *);
  60 static int lpfc_post_rcv_buf(struct lpfc_hba *);
  61 static int lpfc_sli4_queue_create(struct lpfc_hba *);
  62 static void lpfc_sli4_queue_destroy(struct lpfc_hba *);
  63 static int lpfc_create_bootstrap_mbox(struct lpfc_hba *);
  64 static int lpfc_setup_endian_order(struct lpfc_hba *);
  65 static int lpfc_sli4_read_config(struct lpfc_hba *);
  66 static void lpfc_destroy_bootstrap_mbox(struct lpfc_hba *);
  67 static void lpfc_free_sgl_list(struct lpfc_hba *);
  68 static int lpfc_init_sgl_list(struct lpfc_hba *);
  69 static int lpfc_init_active_sgl_array(struct lpfc_hba *);
  70 static void lpfc_free_active_sgl(struct lpfc_hba *);
  71 static int lpfc_hba_down_post_s3(struct lpfc_hba *phba);
  72 static int lpfc_hba_down_post_s4(struct lpfc_hba *phba);
  73 static int lpfc_sli4_cq_event_pool_create(struct lpfc_hba *);
  74 static void lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *);
  75 static void lpfc_sli4_cq_event_release_all(struct lpfc_hba *);
  76
  77 static struct scsi_transport_template *lpfc_transport_template = NULL;
  78 static struct scsi_transport_template *lpfc_vport_transport_template = NULL;
  79 static DEFINE_IDR(lpfc_hba_index);
  80
  81 /**
  82  * lpfc_config_port_prep - Perform lpfc initialization prior to config port
  83  * @phba: pointer to lpfc hba data structure.
  84  *
  85  * This routine will do LPFC initialization prior to issuing the CONFIG_PORT
  86  * mailbox command. It retrieves the revision information from the HBA and
  87  * collects the Vital Product Data (VPD) about the HBA for preparing the
  88  * configuration of the HBA.
  89  *
  90  * Return codes:
  91  *   0 - success.
  92  *   -ERESTART - requests the SLI layer to reset the HBA and try again.
  93  *   Any other value - indicates an error.
  94  **/
  95 int
  96 lpfc_config_port_prep(struct lpfc_hba *phba)
  97 {
  98         lpfc_vpd_t *vp = &phba->vpd;
  99         int i = 0, rc;
 100         LPFC_MBOXQ_t *pmb;
 101         MAILBOX_t *mb;
 102         char *lpfc_vpd_data = NULL;
 103         uint16_t offset = 0;
 104         static char licensed[56] =
 105                     "key unlock for use with gnu public licensed code only\0";
 106         static int init_key = 1;
 107
 108         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 109         if (!pmb) {
 110                 phba->link_state = LPFC_HBA_ERROR;
 111                 return -ENOMEM;
 112         }
 113
 114         mb = &pmb->u.mb;
 115         phba->link_state = LPFC_INIT_MBX_CMDS;
 116
 117         if (lpfc_is_LC_HBA(phba->pcidev->device)) {
 118                 if (init_key) {
 119                         uint32_t *ptext = (uint32_t *) licensed;
 120
 121                         for (i = 0; i < 56; i += sizeof (uint32_t), ptext++)
 122                                 *ptext = cpu_to_be32(*ptext);
 123                         init_key = 0;
 124                 }
 125
 126                 lpfc_read_nv(phba, pmb);
 127                 memset((char*)mb->un.varRDnvp.rsvd3, 0,
 128                         sizeof (mb->un.varRDnvp.rsvd3));
 129                 memcpy((char*)mb->un.varRDnvp.rsvd3, licensed,
 130                          sizeof (licensed));
 131
 132                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 133
 134                 if (rc != MBX_SUCCESS) {
 135                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 136                                         "0324 Config Port initialization "
 137                                         "error, mbxCmd x%x READ_NVPARM, "
 138                                         "mbxStatus x%x\n",
 139                                         mb->mbxCommand, mb->mbxStatus);
 140                         mempool_free(pmb, phba->mbox_mem_pool);
 141                         return -ERESTART;
 142                 }
 143                 memcpy(phba->wwnn, (char *)mb->un.varRDnvp.nodename,
 144                        sizeof(phba->wwnn));
 145                 memcpy(phba->wwpn, (char *)mb->un.varRDnvp.portname,
 146                        sizeof(phba->wwpn));
 147         }
 148
 149         phba->sli3_options = 0x0;
 150
 151         /* Setup and issue mailbox READ REV command */
 152         lpfc_read_rev(phba, pmb);
 153         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 154         if (rc != MBX_SUCCESS) {
 155                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 156                                 "0439 Adapter failed to init, mbxCmd x%x "
 157                                 "READ_REV, mbxStatus x%x\n",
 158                                 mb->mbxCommand, mb->mbxStatus);
 159                 mempool_free( pmb, phba->mbox_mem_pool);
 160                 return -ERESTART;
 161         }
 162
 163
 164         /*
 165          * The value of rr must be 1 since the driver set the cv field to 1.
 166          * This setting requires the FW to set all revision fields.
 167          */
 168         if (mb->un.varRdRev.rr == 0) {
 169                 vp->rev.rBit = 0;
 170                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 171                                 "0440 Adapter failed to init, READ_REV has "
 172                                 "missing revision information.\n");
 173                 mempool_free(pmb, phba->mbox_mem_pool);
 174                 return -ERESTART;
 175         }
 176
 177         if (phba->sli_rev == 3 && !mb->un.varRdRev.v3rsp) {
 178                 mempool_free(pmb, phba->mbox_mem_pool);
 179                 return -EINVAL;
 180         }
 181
 182         /* Save information as VPD data */
 183         vp->rev.rBit = 1;
 184         memcpy(&vp->sli3Feat, &mb->un.varRdRev.sli3Feat, sizeof(uint32_t));
 185         vp->rev.sli1FwRev = mb->un.varRdRev.sli1FwRev;
 186         memcpy(vp->rev.sli1FwName, (char*) mb->un.varRdRev.sli1FwName, 16);
 187         vp->rev.sli2FwRev = mb->un.varRdRev.sli2FwRev;
 188         memcpy(vp->rev.sli2FwName, (char *) mb->un.varRdRev.sli2FwName, 16);
 189         vp->rev.biuRev = mb->un.varRdRev.biuRev;
 190         vp->rev.smRev = mb->un.varRdRev.smRev;
 191         vp->rev.smFwRev = mb->un.varRdRev.un.smFwRev;
 192         vp->rev.endecRev = mb->un.varRdRev.endecRev;
 193         vp->rev.fcphHigh = mb->un.varRdRev.fcphHigh;
 194         vp->rev.fcphLow = mb->un.varRdRev.fcphLow;
 195         vp->rev.feaLevelHigh = mb->un.varRdRev.feaLevelHigh;
 196         vp->rev.feaLevelLow = mb->un.varRdRev.feaLevelLow;
 197         vp->rev.postKernRev = mb->un.varRdRev.postKernRev;
 198         vp->rev.opFwRev = mb->un.varRdRev.opFwRev;
 199
 200         /* If the sli feature level is less then 9, we must
 201          * tear down all RPIs and VPIs on link down if NPIV
 202          * is enabled.
 203          */
 204         if (vp->rev.feaLevelHigh < 9)
 205                 phba->sli3_options |= LPFC_SLI3_VPORT_TEARDOWN;
 206
 207         if (lpfc_is_LC_HBA(phba->pcidev->device))
 208                 memcpy(phba->RandomData, (char *)&mb->un.varWords[24],
 209                                                 sizeof (phba->RandomData));
 210
 211         /* Get adapter VPD information */
 212         lpfc_vpd_data = kmalloc(DMP_VPD_SIZE, GFP_KERNEL);
 213         if (!lpfc_vpd_data)
 214                 goto out_free_mbox;
 215         do {
 216                 lpfc_dump_mem(phba, pmb, offset, DMP_REGION_VPD);
 217                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 218
 219                 if (rc != MBX_SUCCESS) {
 220                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
 221                                         "0441 VPD not present on adapter, "
 222                                         "mbxCmd x%x DUMP VPD, mbxStatus x%x\n",
 223                                         mb->mbxCommand, mb->mbxStatus);
 224                         mb->un.varDmp.word_cnt = 0;
 225                 }
 226                 /* dump mem may return a zero when finished or we got a
 227                  * mailbox error, either way we are done.
 228                  */
 229                 if (mb->un.varDmp.word_cnt == 0)
 230                         break;
 231                 if (mb->un.varDmp.word_cnt > DMP_VPD_SIZE - offset)
 232                         mb->un.varDmp.word_cnt = DMP_VPD_SIZE - offset;
 233                 lpfc_sli_pcimem_bcopy(((uint8_t *)mb) + DMP_RSP_OFFSET,
 234                                       lpfc_vpd_data + offset,
 235                                       mb->un.varDmp.word_cnt);
 236                 offset += mb->un.varDmp.word_cnt;
 237         } while (mb->un.varDmp.word_cnt && offset < DMP_VPD_SIZE);
 238         lpfc_parse_vpd(phba, lpfc_vpd_data, offset);
 239
 240         kfree(lpfc_vpd_data);
 241 out_free_mbox:
 242         mempool_free(pmb, phba->mbox_mem_pool);
 243         return 0;
 244 }
 245
 246 /**
 247  * lpfc_config_async_cmpl - Completion handler for config async event mbox cmd
 248  * @phba: pointer to lpfc hba data structure.
 249  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 250  *
 251  * This is the completion handler for driver's configuring asynchronous event
 252  * mailbox command to the device. If the mailbox command returns successfully,
 253  * it will set internal async event support flag to 1; otherwise, it will
 254  * set internal async event support flag to 0.
 255  **/
 256 static void
 257 lpfc_config_async_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
 258 {
 259         if (pmboxq->u.mb.mbxStatus == MBX_SUCCESS)
 260                 phba->temp_sensor_support = 1;
 261         else
 262                 phba->temp_sensor_support = 0;
 263         mempool_free(pmboxq, phba->mbox_mem_pool);
 264         return;
 265 }
 266
 267 /**
 268  * lpfc_dump_wakeup_param_cmpl - dump memory mailbox command completion handler
 269  * @phba: pointer to lpfc hba data structure.
 270  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 271  *
 272  * This is the completion handler for dump mailbox command for getting
 273  * wake up parameters. When this command complete, the response contain
 274  * Option rom version of the HBA. This function translate the version number
 275  * into a human readable string and store it in OptionROMVersion.
 276  **/
 277 static void
 278 lpfc_dump_wakeup_param_cmpl(struct lpfc_hba *phba, LPFC_MBOXQ_t *pmboxq)
 279 {
 280         struct prog_id *prg;
 281         uint32_t prog_id_word;
 282         char dist = ' ';
 283         /* character array used for decoding dist type. */
 284         char dist_char[] = "nabx";
 285
 286         if (pmboxq->u.mb.mbxStatus != MBX_SUCCESS) {
 287                 mempool_free(pmboxq, phba->mbox_mem_pool);
 288                 return;
 289         }
 290
 291         prg = (struct prog_id *) &prog_id_word;
 292
 293         /* word 7 contain option rom version */
 294         prog_id_word = pmboxq->u.mb.un.varWords[7];
 295
 296         /* Decode the Option rom version word to a readable string */
 297         if (prg->dist < 4)
 298                 dist = dist_char[prg->dist];
 299
 300         if ((prg->dist == 3) && (prg->num == 0))
 301                 sprintf(phba->OptionROMVersion, "%d.%d%d",
 302                         prg->ver, prg->rev, prg->lev);
 303         else
 304                 sprintf(phba->OptionROMVersion, "%d.%d%d%c%d",
 305                         prg->ver, prg->rev, prg->lev,
 306                         dist, prg->num);
 307         mempool_free(pmboxq, phba->mbox_mem_pool);
 308         return;
 309 }
 310
 311 /**
 312  * lpfc_update_vport_wwn - Updates the fc_nodename, fc_portname,
 313  *      cfg_soft_wwnn, cfg_soft_wwpn
 314  * @vport: pointer to lpfc vport data structure.
 315  *
 316  *
 317  * Return codes
 318  *   None.
 319  **/
 320 void
 321 lpfc_update_vport_wwn(struct lpfc_vport *vport)
 322 {
 323         /* If the soft name exists then update it using the service params */
 324         if (vport->phba->cfg_soft_wwnn)
 325                 u64_to_wwn(vport->phba->cfg_soft_wwnn,
 326                            vport->fc_sparam.nodeName.u.wwn);
 327         if (vport->phba->cfg_soft_wwpn)
 328                 u64_to_wwn(vport->phba->cfg_soft_wwpn,
 329                            vport->fc_sparam.portName.u.wwn);
 330
 331         /*
 332          * If the name is empty or there exists a soft name
 333          * then copy the service params name, otherwise use the fc name
 334          */
 335         if (vport->fc_nodename.u.wwn[0] == 0 || vport->phba->cfg_soft_wwnn)
 336                 memcpy(&vport->fc_nodename, &vport->fc_sparam.nodeName,
 337                         sizeof(struct lpfc_name));
 338         else
 339                 memcpy(&vport->fc_sparam.nodeName, &vport->fc_nodename,
 340                         sizeof(struct lpfc_name));
 341
 342         if (vport->fc_portname.u.wwn[0] == 0 || vport->phba->cfg_soft_wwpn)
 343                 memcpy(&vport->fc_portname, &vport->fc_sparam.portName,
 344                         sizeof(struct lpfc_name));
 345         else
 346                 memcpy(&vport->fc_sparam.portName, &vport->fc_portname,
 347                         sizeof(struct lpfc_name));
 348 }
 349
 350 /**
 351  * lpfc_config_port_post - Perform lpfc initialization after config port
 352  * @phba: pointer to lpfc hba data structure.
 353  *
 354  * This routine will do LPFC initialization after the CONFIG_PORT mailbox
 355  * command call. It performs all internal resource and state setups on the
 356  * port: post IOCB buffers, enable appropriate host interrupt attentions,
 357  * ELS ring timers, etc.
 358  *
 359  * Return codes
 360  *   0 - success.
 361  *   Any other value - error.
 362  **/
 363 int
 364 lpfc_config_port_post(struct lpfc_hba *phba)
 365 {
 366         struct lpfc_vport *vport = phba->pport;
 367         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
 368         LPFC_MBOXQ_t *pmb;
 369         MAILBOX_t *mb;
 370         struct lpfc_dmabuf *mp;
 371         struct lpfc_sli *psli = &phba->sli;
 372         uint32_t status, timeout;
 373         int i, j;
 374         int rc;
 375
 376         spin_lock_irq(&phba->hbalock);
 377         /*
 378          * If the Config port completed correctly the HBA is not
 379          * over heated any more.
 380          */
 381         if (phba->over_temp_state == HBA_OVER_TEMP)
 382                 phba->over_temp_state = HBA_NORMAL_TEMP;
 383         spin_unlock_irq(&phba->hbalock);
 384
 385         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 386         if (!pmb) {
 387                 phba->link_state = LPFC_HBA_ERROR;
 388                 return -ENOMEM;
 389         }
 390         mb = &pmb->u.mb;
 391
 392         /* Get login parameters for NID.  */
 393         rc = lpfc_read_sparam(phba, pmb, 0);
 394         if (rc) {
 395                 mempool_free(pmb, phba->mbox_mem_pool);
 396                 return -ENOMEM;
 397         }
 398
 399         pmb->vport = vport;
 400         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 401                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 402                                 "0448 Adapter failed init, mbxCmd x%x "
 403                                 "READ_SPARM mbxStatus x%x\n",
 404                                 mb->mbxCommand, mb->mbxStatus);
 405                 phba->link_state = LPFC_HBA_ERROR;
 406                 mp = (struct lpfc_dmabuf *) pmb->context1;
 407                 mempool_free(pmb, phba->mbox_mem_pool);
 408                 lpfc_mbuf_free(phba, mp->virt, mp->phys);
 409                 kfree(mp);
 410                 return -EIO;
 411         }
 412
 413         mp = (struct lpfc_dmabuf *) pmb->context1;
 414
 415         memcpy(&vport->fc_sparam, mp->virt, sizeof (struct serv_parm));
 416         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 417         kfree(mp);
 418         pmb->context1 = NULL;
 419         lpfc_update_vport_wwn(vport);
 420
 421         /* Update the fc_host data structures with new wwn. */
 422         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
 423         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
 424         fc_host_max_npiv_vports(shost) = phba->max_vpi;
 425
 426         /* If no serial number in VPD data, use low 6 bytes of WWNN */
 427         /* This should be consolidated into parse_vpd ? - mr */
 428         if (phba->SerialNumber[0] == 0) {
 429                 uint8_t *outptr;
 430
 431                 outptr = &vport->fc_nodename.u.s.IEEE[0];
 432                 for (i = 0; i < 12; i++) {
 433                         status = *outptr++;
 434                         j = ((status & 0xf0) >> 4);
 435                         if (j <= 9)
 436                                 phba->SerialNumber[i] =
 437                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 438                         else
 439                                 phba->SerialNumber[i] =
 440                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 441                         i++;
 442                         j = (status & 0xf);
 443                         if (j <= 9)
 444                                 phba->SerialNumber[i] =
 445                                     (char)((uint8_t) 0x30 + (uint8_t) j);
 446                         else
 447                                 phba->SerialNumber[i] =
 448                                     (char)((uint8_t) 0x61 + (uint8_t) (j - 10));
 449                 }
 450         }
 451
 452         lpfc_read_config(phba, pmb);
 453         pmb->vport = vport;
 454         if (lpfc_sli_issue_mbox(phba, pmb, MBX_POLL) != MBX_SUCCESS) {
 455                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 456                                 "0453 Adapter failed to init, mbxCmd x%x "
 457                                 "READ_CONFIG, mbxStatus x%x\n",
 458                                 mb->mbxCommand, mb->mbxStatus);
 459                 phba->link_state = LPFC_HBA_ERROR;
 460                 mempool_free( pmb, phba->mbox_mem_pool);
 461                 return -EIO;
 462         }
 463
 464         /* Check if the port is disabled */
 465         lpfc_sli_read_link_ste(phba);
 466
 467         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
 468         if (phba->cfg_hba_queue_depth > (mb->un.varRdConfig.max_xri+1))
 469                 phba->cfg_hba_queue_depth =
 470                         (mb->un.varRdConfig.max_xri + 1) -
 471                                         lpfc_sli4_get_els_iocb_cnt(phba);
 472
 473         phba->lmt = mb->un.varRdConfig.lmt;
 474
 475         /* Get the default values for Model Name and Description */
 476         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
 477
 478         if ((phba->cfg_link_speed > LPFC_USER_LINK_SPEED_16G)
 479             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_1G)
 480                 && !(phba->lmt & LMT_1Gb))
 481             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_2G)
 482                 && !(phba->lmt & LMT_2Gb))
 483             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_4G)
 484                 && !(phba->lmt & LMT_4Gb))
 485             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_8G)
 486                 && !(phba->lmt & LMT_8Gb))
 487             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_10G)
 488                 && !(phba->lmt & LMT_10Gb))
 489             || ((phba->cfg_link_speed == LPFC_USER_LINK_SPEED_16G)
 490                 && !(phba->lmt & LMT_16Gb))) {
 491                 /* Reset link speed to auto */
 492                 lpfc_printf_log(phba, KERN_ERR, LOG_LINK_EVENT,
 493                         "1302 Invalid speed for this board: "
 494                         "Reset link speed to auto: x%x\n",
 495                         phba->cfg_link_speed);
 496                         phba->cfg_link_speed = LPFC_USER_LINK_SPEED_AUTO;
 497         }
 498
 499         phba->link_state = LPFC_LINK_DOWN;
 500
 501         /* Only process IOCBs on ELS ring till hba_state is READY */
 502         if (psli->ring[psli->extra_ring].cmdringaddr)
 503                 psli->ring[psli->extra_ring].flag |= LPFC_STOP_IOCB_EVENT;
 504         if (psli->ring[psli->fcp_ring].cmdringaddr)
 505                 psli->ring[psli->fcp_ring].flag |= LPFC_STOP_IOCB_EVENT;
 506         if (psli->ring[psli->next_ring].cmdringaddr)
 507                 psli->ring[psli->next_ring].flag |= LPFC_STOP_IOCB_EVENT;
 508
 509         /* Post receive buffers for desired rings */
 510         if (phba->sli_rev != 3)
 511                 lpfc_post_rcv_buf(phba);
 512
 513         /*
 514          * Configure HBA MSI-X attention conditions to messages if MSI-X mode
 515          */
 516         if (phba->intr_type == MSIX) {
 517                 rc = lpfc_config_msi(phba, pmb);
 518                 if (rc) {
 519                         mempool_free(pmb, phba->mbox_mem_pool);
 520                         return -EIO;
 521                 }
 522                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
 523                 if (rc != MBX_SUCCESS) {
 524                         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
 525                                         "0352 Config MSI mailbox command "
 526                                         "failed, mbxCmd x%x, mbxStatus x%x\n",
 527                                         pmb->u.mb.mbxCommand,
 528                                         pmb->u.mb.mbxStatus);
 529                         mempool_free(pmb, phba->mbox_mem_pool);
 530                         return -EIO;
 531                 }
 532         }
 533
 534         spin_lock_irq(&phba->hbalock);
 535         /* Initialize ERATT handling flag */
 536         phba->hba_flag &= ~HBA_ERATT_HANDLED;
 537
 538         /* Enable appropriate host interrupts */
 539         if (lpfc_readl(phba->HCregaddr, &status)) {
 540                 spin_unlock_irq(&phba->hbalock);
 541                 return -EIO;
 542         }
 543         status |= HC_MBINT_ENA | HC_ERINT_ENA | HC_LAINT_ENA;
 544         if (psli->num_rings > 0)
 545                 status |= HC_R0INT_ENA;
 546         if (psli->num_rings > 1)
 547                 status |= HC_R1INT_ENA;
 548         if (psli->num_rings > 2)
 549                 status |= HC_R2INT_ENA;
 550         if (psli->num_rings > 3)
 551                 status |= HC_R3INT_ENA;
 552
 553         if ((phba->cfg_poll & ENABLE_FCP_RING_POLLING) &&
 554             (phba->cfg_poll & DISABLE_FCP_RING_INT))
 555                 status &= ~(HC_R0INT_ENA);
 556
 557         writel(status, phba->HCregaddr);
 558         readl(phba->HCregaddr); /* flush */
 559         spin_unlock_irq(&phba->hbalock);
 560
 561         /* Set up ring-0 (ELS) timer */
 562         timeout = phba->fc_ratov * 2;
 563         mod_timer(&vport->els_tmofunc, jiffies + HZ * timeout);
 564         /* Set up heart beat (HB) timer */
 565         mod_timer(&phba->hb_tmofunc, jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
 566         phba->hb_outstanding = 0;
 567         phba->last_completion_time = jiffies;
 568         /* Set up error attention (ERATT) polling timer */
 569         mod_timer(&phba->eratt_poll, jiffies + HZ * LPFC_ERATT_POLL_INTERVAL);
 570
 571         if (phba->hba_flag & LINK_DISABLED) {
 572                 lpfc_printf_log(phba,
 573                         KERN_ERR, LOG_INIT,
 574                         "2598 Adapter Link is disabled.\n");
 575                 lpfc_down_link(phba, pmb);
 576                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 577                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 578                 if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 579                         lpfc_printf_log(phba,
 580                         KERN_ERR, LOG_INIT,
 581                         "2599 Adapter failed to issue DOWN_LINK"
 582                         " mbox command rc 0x%x\n", rc);
 583
 584                         mempool_free(pmb, phba->mbox_mem_pool);
 585                         return -EIO;
 586                 }
 587         } else if (phba->cfg_suppress_link_up == LPFC_INITIALIZE_LINK) {
 588                 lpfc_init_link(phba, pmb, phba->cfg_topology,
 589                         phba->cfg_link_speed);
 590                 pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 591                 lpfc_set_loopback_flag(phba);
 592                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 593                 if (rc != MBX_SUCCESS) {
 594                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 595                                 "0454 Adapter failed to init, mbxCmd x%x "
 596                                 "INIT_LINK, mbxStatus x%x\n",
 597                                 mb->mbxCommand, mb->mbxStatus);
 598
 599                         /* Clear all interrupt enable conditions */
 600                         writel(0, phba->HCregaddr);
 601                         readl(phba->HCregaddr); /* flush */
 602                         /* Clear all pending interrupts */
 603                         writel(0xffffffff, phba->HAregaddr);
 604                         readl(phba->HAregaddr); /* flush */
 605                         phba->link_state = LPFC_HBA_ERROR;
 606                         if (rc != MBX_BUSY)
 607                                 mempool_free(pmb, phba->mbox_mem_pool);
 608                         return -EIO;
 609                 }
 610         }
 611         /* MBOX buffer will be freed in mbox compl */
 612         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 613         if (!pmb) {
 614                 phba->link_state = LPFC_HBA_ERROR;
 615                 return -ENOMEM;
 616         }
 617
 618         lpfc_config_async(phba, pmb, LPFC_ELS_RING);
 619         pmb->mbox_cmpl = lpfc_config_async_cmpl;
 620         pmb->vport = phba->pport;
 621         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 622
 623         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 624                 lpfc_printf_log(phba,
 625                                 KERN_ERR,
 626                                 LOG_INIT,
 627                                 "0456 Adapter failed to issue "
 628                                 "ASYNCEVT_ENABLE mbox status x%x\n",
 629                                 rc);
 630                 mempool_free(pmb, phba->mbox_mem_pool);
 631         }
 632
 633         /* Get Option rom version */
 634         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 635         if (!pmb) {
 636                 phba->link_state = LPFC_HBA_ERROR;
 637                 return -ENOMEM;
 638         }
 639
 640         lpfc_dump_wakeup_param(phba, pmb);
 641         pmb->mbox_cmpl = lpfc_dump_wakeup_param_cmpl;
 642         pmb->vport = phba->pport;
 643         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
 644
 645         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 646                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT, "0435 Adapter failed "
 647                                 "to get Option ROM version status x%x\n", rc);
 648                 mempool_free(pmb, phba->mbox_mem_pool);
 649         }
 650
 651         return 0;
 652 }
 653
 654 /**
 655  * lpfc_hba_init_link - Initialize the FC link
 656  * @phba: pointer to lpfc hba data structure.
 657  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 658  *
 659  * This routine will issue the INIT_LINK mailbox command call.
 660  * It is available to other drivers through the lpfc_hba data
 661  * structure for use as a delayed link up mechanism with the
 662  * module parameter lpfc_suppress_link_up.
 663  *
 664  * Return code
 665  *              0 - success
 666  *              Any other value - error
 667  **/
 668 int
 669 lpfc_hba_init_link(struct lpfc_hba *phba, uint32_t flag)
 670 {
 671         struct lpfc_vport *vport = phba->pport;
 672         LPFC_MBOXQ_t *pmb;
 673         MAILBOX_t *mb;
 674         int rc;
 675
 676         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 677         if (!pmb) {
 678                 phba->link_state = LPFC_HBA_ERROR;
 679                 return -ENOMEM;
 680         }
 681         mb = &pmb->u.mb;
 682         pmb->vport = vport;
 683
 684         lpfc_init_link(phba, pmb, phba->cfg_topology, phba->cfg_link_speed);
 685         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 686         lpfc_set_loopback_flag(phba);
 687         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 688         if ((rc != MBX_BUSY) && (rc != MBX_SUCCESS)) {
 689                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
 690                         "0498 Adapter failed to init, mbxCmd x%x "
 691                         "INIT_LINK, mbxStatus x%x\n",
 692                         mb->mbxCommand, mb->mbxStatus);
 693                 if (phba->sli_rev <= LPFC_SLI_REV3) {
 694                         /* Clear all interrupt enable conditions */
 695                         writel(0, phba->HCregaddr);
 696                         readl(phba->HCregaddr); /* flush */
 697                         /* Clear all pending interrupts */
 698                         writel(0xffffffff, phba->HAregaddr);
 699                         readl(phba->HAregaddr); /* flush */
 700                 }
 701                 phba->link_state = LPFC_HBA_ERROR;
 702                 if (rc != MBX_BUSY || flag == MBX_POLL)
 703                         mempool_free(pmb, phba->mbox_mem_pool);
 704                 return -EIO;
 705         }
 706         phba->cfg_suppress_link_up = LPFC_INITIALIZE_LINK;
 707         if (flag == MBX_POLL)
 708                 mempool_free(pmb, phba->mbox_mem_pool);
 709
 710         return 0;
 711 }
 712
 713 /**
 714  * lpfc_hba_down_link - this routine downs the FC link
 715  * @phba: pointer to lpfc hba data structure.
 716  * @flag: mailbox command issue mode - either MBX_POLL or MBX_NOWAIT
 717  *
 718  * This routine will issue the DOWN_LINK mailbox command call.
 719  * It is available to other drivers through the lpfc_hba data
 720  * structure for use to stop the link.
 721  *
 722  * Return code
 723  *              0 - success
 724  *              Any other value - error
 725  **/
 726 int
 727 lpfc_hba_down_link(struct lpfc_hba *phba, uint32_t flag)
 728 {
 729         LPFC_MBOXQ_t *pmb;
 730         int rc;
 731
 732         pmb = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
 733         if (!pmb) {
 734                 phba->link_state = LPFC_HBA_ERROR;
 735                 return -ENOMEM;
 736         }
 737
 738         lpfc_printf_log(phba,
 739                 KERN_ERR, LOG_INIT,
 740                 "0491 Adapter Link is disabled.\n");
 741         lpfc_down_link(phba, pmb);
 742         pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
 743         rc = lpfc_sli_issue_mbox(phba, pmb, flag);
 744         if ((rc != MBX_SUCCESS) && (rc != MBX_BUSY)) {
 745                 lpfc_printf_log(phba,
 746                 KERN_ERR, LOG_INIT,
 747                 "2522 Adapter failed to issue DOWN_LINK"
 748                 " mbox command rc 0x%x\n", rc);
 749
 750                 mempool_free(pmb, phba->mbox_mem_pool);
 751                 return -EIO;
 752         }
 753         if (flag == MBX_POLL)
 754                 mempool_free(pmb, phba->mbox_mem_pool);
 755
 756         return 0;
 757 }
 758
 759 /**
 760  * lpfc_hba_down_prep - Perform lpfc uninitialization prior to HBA reset
 761  * @phba: pointer to lpfc HBA data structure.
 762  *
 763  * This routine will do LPFC uninitialization before the HBA is reset when
 764  * bringing down the SLI Layer.
 765  *
 766  * Return codes
 767  *   0 - success.
 768  *   Any other value - error.
 769  **/
 770 int
 771 lpfc_hba_down_prep(struct lpfc_hba *phba)
 772 {
 773         struct lpfc_vport **vports;
 774         int i;
 775
 776         if (phba->sli_rev <= LPFC_SLI_REV3) {
 777                 /* Disable interrupts */
 778                 writel(0, phba->HCregaddr);
 779                 readl(phba->HCregaddr); /* flush */
 780         }
 781
 782         if (phba->pport->load_flag & FC_UNLOADING)
 783                 lpfc_cleanup_discovery_resources(phba->pport);
 784         else {
 785                 vports = lpfc_create_vport_work_array(phba);
 786                 if (vports != NULL)
 787                         for (i = 0; i <= phba->max_vports &&
 788                                 vports[i] != NULL; i++)
 789                                 lpfc_cleanup_discovery_resources(vports[i]);
 790                 lpfc_destroy_vport_work_array(phba, vports);
 791         }
 792         return 0;
 793 }
 794
 795 /**
 796  * lpfc_hba_down_post_s3 - Perform lpfc uninitialization after HBA reset
 797  * @phba: pointer to lpfc HBA data structure.
 798  *
 799  * This routine will do uninitialization after the HBA is reset when bring
 800  * down the SLI Layer.
 801  *
 802  * Return codes
 803  *   0 - success.
 804  *   Any other value - error.
 805  **/
 806 static int
 807 lpfc_hba_down_post_s3(struct lpfc_hba *phba)
 808 {
 809         struct lpfc_sli *psli = &phba->sli;
 810         struct lpfc_sli_ring *pring;
 811         struct lpfc_dmabuf *mp, *next_mp;
 812         LIST_HEAD(completions);
 813         int i;
 814
 815         if (phba->sli3_options & LPFC_SLI3_HBQ_ENABLED)
 816                 lpfc_sli_hbqbuf_free_all(phba);
 817         else {
 818                 /* Cleanup preposted buffers on the ELS ring */
 819                 pring = &psli->ring[LPFC_ELS_RING];
 820                 list_for_each_entry_safe(mp, next_mp, &pring->postbufq, list) {
 821                         list_del(&mp->list);
 822                         pring->postbufq_cnt--;
 823                         lpfc_mbuf_free(phba, mp->virt, mp->phys);
 824                         kfree(mp);
 825                 }
 826         }
 827
 828         spin_lock_irq(&phba->hbalock);
 829         for (i = 0; i < psli->num_rings; i++) {
 830                 pring = &psli->ring[i];
 831
 832                 /* At this point in time the HBA is either reset or DOA. Either
 833                  * way, nothing should be on txcmplq as it will NEVER complete.
 834                  */
 835                 list_splice_init(&pring->txcmplq, &completions);
 836                 pring->txcmplq_cnt = 0;
 837                 spin_unlock_irq(&phba->hbalock);
 838
 839                 /* Cancel all the IOCBs from the completions list */
 840                 lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
 841                                       IOERR_SLI_ABORTED);
 842
 843                 lpfc_sli_abort_iocb_ring(phba, pring);
 844                 spin_lock_irq(&phba->hbalock);
 845         }
 846         spin_unlock_irq(&phba->hbalock);
 847
 848         return 0;
 849 }
 850
 851 /**
 852  * lpfc_hba_down_post_s4 - Perform lpfc uninitialization after HBA reset
 853  * @phba: pointer to lpfc HBA data structure.
 854  *
 855  * This routine will do uninitialization after the HBA is reset when bring
 856  * down the SLI Layer.
 857  *
 858  * Return codes
 859  *   0 - success.
 860  *   Any other value - error.
 861  **/
 862 static int
 863 lpfc_hba_down_post_s4(struct lpfc_hba *phba)
 864 {
 865         struct lpfc_scsi_buf *psb, *psb_next;
 866         LIST_HEAD(aborts);
 867         int ret;
 868         unsigned long iflag = 0;
 869         struct lpfc_sglq *sglq_entry = NULL;
 870
 871         ret = lpfc_hba_down_post_s3(phba);
 872         if (ret)
 873                 return ret;
 874         /* At this point in time the HBA is either reset or DOA. Either
 875          * way, nothing should be on lpfc_abts_els_sgl_list, it needs to be
 876          * on the lpfc_sgl_list so that it can either be freed if the
 877          * driver is unloading or reposted if the driver is restarting
 878          * the port.
 879          */
 880         spin_lock_irq(&phba->hbalock);  /* required for lpfc_sgl_list and */
 881                                         /* scsl_buf_list */
 882         /* abts_sgl_list_lock required because worker thread uses this
 883          * list.
 884          */
 885         spin_lock(&phba->sli4_hba.abts_sgl_list_lock);
 886         list_for_each_entry(sglq_entry,
 887                 &phba->sli4_hba.lpfc_abts_els_sgl_list, list)
 888                 sglq_entry->state = SGL_FREED;
 889
 890         list_splice_init(&phba->sli4_hba.lpfc_abts_els_sgl_list,
 891                         &phba->sli4_hba.lpfc_sgl_list);
 892         spin_unlock(&phba->sli4_hba.abts_sgl_list_lock);
 893         /* abts_scsi_buf_list_lock required because worker thread uses this
 894          * list.
 895          */
 896         spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 897         list_splice_init(&phba->sli4_hba.lpfc_abts_scsi_buf_list,
 898                         &aborts);
 899         spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock);
 900         spin_unlock_irq(&phba->hbalock);
 901
 902         list_for_each_entry_safe(psb, psb_next, &aborts, list) {
 903                 psb->pCmd = NULL;
 904                 psb->status = IOSTAT_SUCCESS;
 905         }
 906         spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag);
 907         list_splice(&aborts, &phba->lpfc_scsi_buf_list);
 908         spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag);
 909         return 0;
 910 }
 911
 912 /**
 913  * lpfc_hba_down_post - Wrapper func for hba down post routine
 914  * @phba: pointer to lpfc HBA data structure.
 915  *
 916  * This routine wraps the actual SLI3 or SLI4 routine for performing
 917  * uninitialization after the HBA is reset when bring down the SLI Layer.
 918  *
 919  * Return codes
 920  *   0 - success.
 921  *   Any other value - error.
 922  **/
 923 int
 924 lpfc_hba_down_post(struct lpfc_hba *phba)
 925 {
 926         return (*phba->lpfc_hba_down_post)(phba);
 927 }
 928
 929 /**
 930  * lpfc_hb_timeout - The HBA-timer timeout handler
 931  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 932  *
 933  * This is the HBA-timer timeout handler registered to the lpfc driver. When
 934  * this timer fires, a HBA timeout event shall be posted to the lpfc driver
 935  * work-port-events bitmap and the worker thread is notified. This timeout
 936  * event will be used by the worker thread to invoke the actual timeout
 937  * handler routine, lpfc_hb_timeout_handler. Any periodical operations will
 938  * be performed in the timeout handler and the HBA timeout event bit shall
 939  * be cleared by the worker thread after it has taken the event bitmap out.
 940  **/
 941 static void
 942 lpfc_hb_timeout(unsigned long ptr)
 943 {
 944         struct lpfc_hba *phba;
 945         uint32_t tmo_posted;
 946         unsigned long iflag;
 947
 948         phba = (struct lpfc_hba *)ptr;
 949
 950         /* Check for heart beat timeout conditions */
 951         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 952         tmo_posted = phba->pport->work_port_events & WORKER_HB_TMO;
 953         if (!tmo_posted)
 954                 phba->pport->work_port_events |= WORKER_HB_TMO;
 955         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 956
 957         /* Tell the worker thread there is work to do */
 958         if (!tmo_posted)
 959                 lpfc_worker_wake_up(phba);
 960         return;
 961 }
 962
 963 /**
 964  * lpfc_rrq_timeout - The RRQ-timer timeout handler
 965  * @ptr: unsigned long holds the pointer to lpfc hba data structure.
 966  *
 967  * This is the RRQ-timer timeout handler registered to the lpfc driver. When
 968  * this timer fires, a RRQ timeout event shall be posted to the lpfc driver
 969  * work-port-events bitmap and the worker thread is notified. This timeout
 970  * event will be used by the worker thread to invoke the actual timeout
 971  * handler routine, lpfc_rrq_handler. Any periodical operations will
 972  * be performed in the timeout handler and the RRQ timeout event bit shall
 973  * be cleared by the worker thread after it has taken the event bitmap out.
 974  **/
 975 static void
 976 lpfc_rrq_timeout(unsigned long ptr)
 977 {
 978         struct lpfc_hba *phba;
 979         unsigned long iflag;
 980
 981         phba = (struct lpfc_hba *)ptr;
 982         spin_lock_irqsave(&phba->pport->work_port_lock, iflag);
 983         phba->hba_flag |= HBA_RRQ_ACTIVE;
 984         spin_unlock_irqrestore(&phba->pport->work_port_lock, iflag);
 985         lpfc_worker_wake_up(phba);
 986 }
 987
 988 /**
 989  * lpfc_hb_mbox_cmpl - The lpfc heart-beat mailbox command callback function
 990  * @phba: pointer to lpfc hba data structure.
 991  * @pmboxq: pointer to the driver internal queue element for mailbox command.
 992  *
 993  * This is the callback function to the lpfc heart-beat mailbox command.
 994  * If configured, the lpfc driver issues the heart-beat mailbox command to
 995  * the HBA every LPFC_HB_MBOX_INTERVAL (current 5) seconds. At the time the
 996  * heart-beat mailbox command is issued, the driver shall set up heart-beat
 997  * timeout timer to LPFC_HB_MBOX_TIMEOUT (current 30) seconds and marks
 998  * heart-beat outstanding state. Once the mailbox command comes back and
 999  * no error conditions detected, the heart-beat mailbox command timer is
1000  * reset to LPFC_HB_MBOX_INTERVAL seconds and the heart-beat outstanding
1001  * state is cleared for the next heart-beat. If the timer expired with the
1002  * heart-beat outstanding state set, the driver will put the HBA offline.
1003  **/
1004 static void
1005 lpfc_hb_mbox_cmpl(struct lpfc_hba * phba, LPFC_MBOXQ_t * pmboxq)
1006 {
1007         unsigned long drvr_flag;
1008
1009         spin_lock_irqsave(&phba->hbalock, drvr_flag);
1010         phba->hb_outstanding = 0;
1011         spin_unlock_irqrestore(&phba->hbalock, drvr_flag);
1012
1013         /* Check and reset heart-beat timer is necessary */
1014         mempool_free(pmboxq, phba->mbox_mem_pool);
1015         if (!(phba->pport->fc_flag & FC_OFFLINE_MODE) &&
1016                 !(phba->link_state == LPFC_HBA_ERROR) &&
1017                 !(phba->pport->load_flag & FC_UNLOADING))
1018                 mod_timer(&phba->hb_tmofunc,
1019                         jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1020         return;
1021 }
1022
1023 /**
1024  * lpfc_hb_timeout_handler - The HBA-timer timeout handler
1025  * @phba: pointer to lpfc hba data structure.
1026  *
1027  * This is the actual HBA-timer timeout handler to be invoked by the worker
1028  * thread whenever the HBA timer fired and HBA-timeout event posted. This
1029  * handler performs any periodic operations needed for the device. If such
1030  * periodic event has already been attended to either in the interrupt handler
1031  * or by processing slow-ring or fast-ring events within the HBA-timer
1032  * timeout window (LPFC_HB_MBOX_INTERVAL), this handler just simply resets
1033  * the timer for the next timeout period. If lpfc heart-beat mailbox command
1034  * is configured and there is no heart-beat mailbox command outstanding, a
1035  * heart-beat mailbox is issued and timer set properly. Otherwise, if there
1036  * has been a heart-beat mailbox command outstanding, the HBA shall be put
1037  * to offline.
1038  **/
1039 void
1040 lpfc_hb_timeout_handler(struct lpfc_hba *phba)
1041 {
1042         struct lpfc_vport **vports;
1043         LPFC_MBOXQ_t *pmboxq;
1044         struct lpfc_dmabuf *buf_ptr;
1045         int retval, i;
1046         struct lpfc_sli *psli = &phba->sli;
1047         LIST_HEAD(completions);
1048
1049         vports = lpfc_create_vport_work_array(phba);
1050         if (vports != NULL)
1051                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
1052                         lpfc_rcv_seq_check_edtov(vports[i]);
1053         lpfc_destroy_vport_work_array(phba, vports);
1054
1055         if ((phba->link_state == LPFC_HBA_ERROR) ||
1056                 (phba->pport->load_flag & FC_UNLOADING) ||
1057                 (phba->pport->fc_flag & FC_OFFLINE_MODE))
1058                 return;
1059
1060         spin_lock_irq(&phba->pport->work_port_lock);
1061
1062         if (time_after(phba->last_completion_time + LPFC_HB_MBOX_INTERVAL * HZ,
1063                 jiffies)) {
1064                 spin_unlock_irq(&phba->pport->work_port_lock);
1065                 if (!phba->hb_outstanding)
1066                         mod_timer(&phba->hb_tmofunc,
1067                                 jiffies + HZ * LPFC_HB_MBOX_INTERVAL);
1068                 else
1069                         mod_timer(&phba->hb_tmofunc,
1070                                 jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1071                 return;
1072         }
1073         spin_unlock_irq(&phba->pport->work_port_lock);
1074
1075         if (phba->elsbuf_cnt &&
1076                 (phba->elsbuf_cnt == phba->elsbuf_prev_cnt)) {
1077                 spin_lock_irq(&phba->hbalock);
1078                 list_splice_init(&phba->elsbuf, &completions);
1079                 phba->elsbuf_cnt = 0;
1080                 phba->elsbuf_prev_cnt = 0;
1081                 spin_unlock_irq(&phba->hbalock);
1082
1083                 while (!list_empty(&completions)) {
1084                         list_remove_head(&completions, buf_ptr,
1085                                 struct lpfc_dmabuf, list);
1086                         lpfc_mbuf_free(phba, buf_ptr->virt, buf_ptr->phys);
1087                         kfree(buf_ptr);
1088                 }
1089         }
1090         phba->elsbuf_prev_cnt = phba->elsbuf_cnt;
1091
1092         /* If there is no heart beat outstanding, issue a heartbeat command */
1093         if (phba->cfg_enable_hba_heartbeat) {
1094                 if (!phba->hb_outstanding) {
1095                         if ((!(psli->sli_flag & LPFC_SLI_MBOX_ACTIVE)) &&
1096                                 (list_empty(&psli->mboxq))) {
1097                                 pmboxq = mempool_alloc(phba->mbox_mem_pool,
1098                                                         GFP_KERNEL);
1099                                 if (!pmboxq) {
1100                                         mod_timer(&phba->hb_tmofunc,
1101                                                  jiffies +
1102                                                  HZ * LPFC_HB_MBOX_INTERVAL);
1103                                         return;
1104                                 }
1105
1106                                 lpfc_heart_beat(phba, pmboxq);
1107                                 pmboxq->mbox_cmpl = lpfc_hb_mbox_cmpl;
1108                                 pmboxq->vport = phba->pport;
1109                                 retval = lpfc_sli_issue_mbox(phba, pmboxq,
1110                                                 MBX_NOWAIT);
1111
1112                                 if (retval != MBX_BUSY &&
1113                                         retval != MBX_SUCCESS) {
1114                                         mempool_free(pmboxq,
1115                                                         phba->mbox_mem_pool);
1116                                         mod_timer(&phba->hb_tmofunc,
1117                                                 jiffies +
1118                                                 HZ * LPFC_HB_MBOX_INTERVAL);
1119                                         return;
1120                                 }
1121                                 phba->skipped_hb = 0;
1122                                 phba->hb_outstanding = 1;
1123                         } else if (time_before_eq(phba->last_completion_time,
1124                                         phba->skipped_hb)) {
1125                                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1126                                         "2857 Last completion time not "
1127                                         " updated in %d ms\n",
1128                                         jiffies_to_msecs(jiffies
1129                                                  - phba->last_completion_time));
1130                         } else
1131                                 phba->skipped_hb = jiffies;
1132
1133                         mod_timer(&phba->hb_tmofunc,
1134                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1135                         return;
1136                 } else {
1137                         /*
1138                         * If heart beat timeout called with hb_outstanding set
1139                         * we need to give the hb mailbox cmd a chance to
1140                         * complete or TMO.
1141                         */
1142                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
1143                                         "0459 Adapter heartbeat still out"
1144                                         "standing:last compl time was %d ms.\n",
1145                                         jiffies_to_msecs(jiffies
1146                                                  - phba->last_completion_time));
1147                         mod_timer(&phba->hb_tmofunc,
1148                                   jiffies + HZ * LPFC_HB_MBOX_TIMEOUT);
1149                 }
1150         }
1151 }
1152
1153 /**
1154  * lpfc_offline_eratt - Bring lpfc offline on hardware error attention
1155  * @phba: pointer to lpfc hba data structure.
1156  *
1157  * This routine is called to bring the HBA offline when HBA hardware error
1158  * other than Port Error 6 has been detected.
1159  **/
1160 static void
1161 lpfc_offline_eratt(struct lpfc_hba *phba)
1162 {
1163         struct lpfc_sli   *psli = &phba->sli;
1164
1165         spin_lock_irq(&phba->hbalock);
1166         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1167         spin_unlock_irq(&phba->hbalock);
1168         lpfc_offline_prep(phba);
1169
1170         lpfc_offline(phba);
1171         lpfc_reset_barrier(phba);
1172         spin_lock_irq(&phba->hbalock);
1173         lpfc_sli_brdreset(phba);
1174         spin_unlock_irq(&phba->hbalock);
1175         lpfc_hba_down_post(phba);
1176         lpfc_sli_brdready(phba, HS_MBRDY);
1177         lpfc_unblock_mgmt_io(phba);
1178         phba->link_state = LPFC_HBA_ERROR;
1179         return;
1180 }
1181
1182 /**
1183  * lpfc_sli4_offline_eratt - Bring lpfc offline on SLI4 hardware error attention
1184  * @phba: pointer to lpfc hba data structure.
1185  *
1186  * This routine is called to bring a SLI4 HBA offline when HBA hardware error
1187  * other than Port Error 6 has been detected.
1188  **/
1189 static void
1190 lpfc_sli4_offline_eratt(struct lpfc_hba *phba)
1191 {
1192         lpfc_offline_prep(phba);
1193         lpfc_offline(phba);
1194         lpfc_sli4_brdreset(phba);
1195         lpfc_hba_down_post(phba);
1196         lpfc_sli4_post_status_check(phba);
1197         lpfc_unblock_mgmt_io(phba);
1198         phba->link_state = LPFC_HBA_ERROR;
1199 }
1200
1201 /**
1202  * lpfc_handle_deferred_eratt - The HBA hardware deferred error handler
1203  * @phba: pointer to lpfc hba data structure.
1204  *
1205  * This routine is invoked to handle the deferred HBA hardware error
1206  * conditions. This type of error is indicated by HBA by setting ER1
1207  * and another ER bit in the host status register. The driver will
1208  * wait until the ER1 bit clears before handling the error condition.
1209  **/
1210 static void
1211 lpfc_handle_deferred_eratt(struct lpfc_hba *phba)
1212 {
1213         uint32_t old_host_status = phba->work_hs;
1214         struct lpfc_sli_ring  *pring;
1215         struct lpfc_sli *psli = &phba->sli;
1216
1217         /* If the pci channel is offline, ignore possible errors,
1218          * since we cannot communicate with the pci card anyway.
1219          */
1220         if (pci_channel_offline(phba->pcidev)) {
1221                 spin_lock_irq(&phba->hbalock);
1222                 phba->hba_flag &= ~DEFER_ERATT;
1223                 spin_unlock_irq(&phba->hbalock);
1224                 return;
1225         }
1226
1227         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1228                 "0479 Deferred Adapter Hardware Error "
1229                 "Data: x%x x%x x%x\n",
1230                 phba->work_hs,
1231                 phba->work_status[0], phba->work_status[1]);
1232
1233         spin_lock_irq(&phba->hbalock);
1234         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1235         spin_unlock_irq(&phba->hbalock);
1236
1237
1238         /*
1239          * Firmware stops when it triggred erratt. That could cause the I/Os
1240          * dropped by the firmware. Error iocb (I/O) on txcmplq and let the
1241          * SCSI layer retry it after re-establishing link.
1242          */
1243         pring = &psli->ring[psli->fcp_ring];
1244         lpfc_sli_abort_iocb_ring(phba, pring);
1245
1246         /*
1247          * There was a firmware error. Take the hba offline and then
1248          * attempt to restart it.
1249          */
1250         lpfc_offline_prep(phba);
1251         lpfc_offline(phba);
1252
1253         /* Wait for the ER1 bit to clear.*/
1254         while (phba->work_hs & HS_FFER1) {
1255                 msleep(100);
1256                 if (lpfc_readl(phba->HSregaddr, &phba->work_hs)) {
1257                         phba->work_hs = UNPLUG_ERR ;
1258                         break;
1259                 }
1260                 /* If driver is unloading let the worker thread continue */
1261                 if (phba->pport->load_flag & FC_UNLOADING) {
1262                         phba->work_hs = 0;
1263                         break;
1264                 }
1265         }
1266
1267         /*
1268          * This is to ptrotect against a race condition in which
1269          * first write to the host attention register clear the
1270          * host status register.
1271          */
1272         if ((!phba->work_hs) && (!(phba->pport->load_flag & FC_UNLOADING)))
1273                 phba->work_hs = old_host_status & ~HS_FFER1;
1274
1275         spin_lock_irq(&phba->hbalock);
1276         phba->hba_flag &= ~DEFER_ERATT;
1277         spin_unlock_irq(&phba->hbalock);
1278         phba->work_status[0] = readl(phba->MBslimaddr + 0xa8);
1279         phba->work_status[1] = readl(phba->MBslimaddr + 0xac);
1280 }
1281
1282 static void
1283 lpfc_board_errevt_to_mgmt(struct lpfc_hba *phba)
1284 {
1285         struct lpfc_board_event_header board_event;
1286         struct Scsi_Host *shost;
1287
1288         board_event.event_type = FC_REG_BOARD_EVENT;
1289         board_event.subcategory = LPFC_EVENT_PORTINTERR;
1290         shost = lpfc_shost_from_vport(phba->pport);
1291         fc_host_post_vendor_event(shost, fc_get_event_number(),
1292                                   sizeof(board_event),
1293                                   (char *) &board_event,
1294                                   LPFC_NL_VENDOR_ID);
1295 }
1296
1297 /**
1298  * lpfc_handle_eratt_s3 - The SLI3 HBA hardware error handler
1299  * @phba: pointer to lpfc hba data structure.
1300  *
1301  * This routine is invoked to handle the following HBA hardware error
1302  * conditions:
1303  * 1 - HBA error attention interrupt
1304  * 2 - DMA ring index out of range
1305  * 3 - Mailbox command came back as unknown
1306  **/
1307 static void
1308 lpfc_handle_eratt_s3(struct lpfc_hba *phba)
1309 {
1310         struct lpfc_vport *vport = phba->pport;
1311         struct lpfc_sli   *psli = &phba->sli;
1312         struct lpfc_sli_ring  *pring;
1313         uint32_t event_data;
1314         unsigned long temperature;
1315         struct temp_event temp_event_data;
1316         struct Scsi_Host  *shost;
1317
1318         /* If the pci channel is offline, ignore possible errors,
1319          * since we cannot communicate with the pci card anyway.
1320          */
1321         if (pci_channel_offline(phba->pcidev)) {
1322                 spin_lock_irq(&phba->hbalock);
1323                 phba->hba_flag &= ~DEFER_ERATT;
1324                 spin_unlock_irq(&phba->hbalock);
1325                 return;
1326         }
1327
1328         /* If resets are disabled then leave the HBA alone and return */
1329         if (!phba->cfg_enable_hba_reset)
1330                 return;
1331
1332         /* Send an internal error event to mgmt application */
1333         lpfc_board_errevt_to_mgmt(phba);
1334
1335         if (phba->hba_flag & DEFER_ERATT)
1336                 lpfc_handle_deferred_eratt(phba);
1337
1338         if ((phba->work_hs & HS_FFER6) || (phba->work_hs & HS_FFER8)) {
1339                 if (phba->work_hs & HS_FFER6)
1340                         /* Re-establishing Link */
1341                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1342                                         "1301 Re-establishing Link "
1343                                         "Data: x%x x%x x%x\n",
1344                                         phba->work_hs, phba->work_status[0],
1345                                         phba->work_status[1]);
1346                 if (phba->work_hs & HS_FFER8)
1347                         /* Device Zeroization */
1348                         lpfc_printf_log(phba, KERN_INFO, LOG_LINK_EVENT,
1349                                         "2861 Host Authentication device "
1350                                         "zeroization Data:x%x x%x x%x\n",
1351                                         phba->work_hs, phba->work_status[0],
1352                                         phba->work_status[1]);
1353
1354                 spin_lock_irq(&phba->hbalock);
1355                 psli->sli_flag &= ~LPFC_SLI_ACTIVE;
1356                 spin_unlock_irq(&phba->hbalock);
1357
1358                 /*
1359                 * Firmware stops when it triggled erratt with HS_FFER6.
1360                 * That could cause the I/Os dropped by the firmware.
1361                 * Error iocb (I/O) on txcmplq and let the SCSI layer
1362                 * retry it after re-establishing link.
1363                 */
1364                 pring = &psli->ring[psli->fcp_ring];
1365                 lpfc_sli_abort_iocb_ring(phba, pring);
1366
1367                 /*
1368                  * There was a firmware error.  Take the hba offline and then
1369                  * attempt to restart it.
1370                  */
1371                 lpfc_offline_prep(phba);
1372                 lpfc_offline(phba);
1373                 lpfc_sli_brdrestart(phba);
1374                 if (lpfc_online(phba) == 0) {   /* Initialize the HBA */
1375                         lpfc_unblock_mgmt_io(phba);
1376                         return;
1377                 }
1378                 lpfc_unblock_mgmt_io(phba);
1379         } else if (phba->work_hs & HS_CRIT_TEMP) {
1380                 temperature = readl(phba->MBslimaddr + TEMPERATURE_OFFSET);
1381                 temp_event_data.event_type = FC_REG_TEMPERATURE_EVENT;
1382                 temp_event_data.event_code = LPFC_CRIT_TEMP;
1383                 temp_event_data.data = (uint32_t)temperature;
1384
1385                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1386                                 "0406 Adapter maximum temperature exceeded "
1387                                 "(%ld), taking this port offline "
1388                                 "Data: x%x x%x x%x\n",
1389                                 temperature, phba->work_hs,
1390                                 phba->work_status[0], phba->work_status[1]);
1391
1392                 shost = lpfc_shost_from_vport(phba->pport);
1393                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1394                                           sizeof(temp_event_data),
1395                                           (char *) &temp_event_data,
1396                                           SCSI_NL_VID_TYPE_PCI
1397                                           | PCI_VENDOR_ID_EMULEX);
1398
1399                 spin_lock_irq(&phba->hbalock);
1400                 phba->over_temp_state = HBA_OVER_TEMP;
1401                 spin_unlock_irq(&phba->hbalock);
1402                 lpfc_offline_eratt(phba);
1403
1404         } else {
1405                 /* The if clause above forces this code path when the status
1406                  * failure is a value other than FFER6. Do not call the offline
1407                  * twice. This is the adapter hardware error path.
1408                  */
1409                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1410                                 "0457 Adapter Hardware Error "
1411                                 "Data: x%x x%x x%x\n",
1412                                 phba->work_hs,
1413                                 phba->work_status[0], phba->work_status[1]);
1414
1415                 event_data = FC_REG_DUMP_EVENT;
1416                 shost = lpfc_shost_from_vport(vport);
1417                 fc_host_post_vendor_event(shost, fc_get_event_number(),
1418                                 sizeof(event_data), (char *) &event_data,
1419                                 SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1420
1421                 lpfc_offline_eratt(phba);
1422         }
1423         return;
1424 }
1425
1426 /**
1427  * lpfc_handle_eratt_s4 - The SLI4 HBA hardware error handler
1428  * @phba: pointer to lpfc hba data structure.
1429  *
1430  * This routine is invoked to handle the SLI4 HBA hardware error attention
1431  * conditions.
1432  **/
1433 static void
1434 lpfc_handle_eratt_s4(struct lpfc_hba *phba)
1435 {
1436         struct lpfc_vport *vport = phba->pport;
1437         uint32_t event_data;
1438         struct Scsi_Host *shost;
1439         uint32_t if_type;
1440         struct lpfc_register portstat_reg;
1441
1442         /* If the pci channel is offline, ignore possible errors, since
1443          * we cannot communicate with the pci card anyway.
1444          */
1445         if (pci_channel_offline(phba->pcidev))
1446                 return;
1447         /* If resets are disabled then leave the HBA alone and return */
1448         if (!phba->cfg_enable_hba_reset)
1449                 return;
1450
1451         /* Send an internal error event to mgmt application */
1452         lpfc_board_errevt_to_mgmt(phba);
1453
1454         /* For now, the actual action for SLI4 device handling is not
1455          * specified yet, just treated it as adaptor hardware failure
1456          */
1457         event_data = FC_REG_DUMP_EVENT;
1458         shost = lpfc_shost_from_vport(vport);
1459         fc_host_post_vendor_event(shost, fc_get_event_number(),
1460                                   sizeof(event_data), (char *) &event_data,
1461                                   SCSI_NL_VID_TYPE_PCI | PCI_VENDOR_ID_EMULEX);
1462
1463         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
1464         switch (if_type) {
1465         case LPFC_SLI_INTF_IF_TYPE_0:
1466                 lpfc_sli4_offline_eratt(phba);
1467                 break;
1468         case LPFC_SLI_INTF_IF_TYPE_2:
1469                 portstat_reg.word0 =
1470                         readl(phba->sli4_hba.u.if_type2.STATUSregaddr);
1471
1472                 if (bf_get(lpfc_sliport_status_oti, &portstat_reg)) {
1473                         /* TODO: Register for Overtemp async events. */
1474                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1475                                 "2889 Port Overtemperature event, "
1476                                 "taking port\n");
1477                         spin_lock_irq(&phba->hbalock);
1478                         phba->over_temp_state = HBA_OVER_TEMP;
1479                         spin_unlock_irq(&phba->hbalock);
1480                         lpfc_sli4_offline_eratt(phba);
1481                         return;
1482                 }
1483                 if (bf_get(lpfc_sliport_status_rn, &portstat_reg)) {
1484                         /*
1485                          * TODO: Attempt port recovery via a port reset.
1486                          * When fully implemented, the driver should
1487                          * attempt to recover the port here and return.
1488                          * For now, log an error and take the port offline.
1489                          */
1490                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
1491                                         "2887 Port Error: Attempting "
1492                                         "Port Recovery\n");
1493                 }
1494                 lpfc_sli4_offline_eratt(phba);
1495                 break;
1496         case LPFC_SLI_INTF_IF_TYPE_1:
1497         default:
1498                 break;
1499         }
1500 }
1501
1502 /**
1503  * lpfc_handle_eratt - Wrapper func for handling hba error attention
1504  * @phba: pointer to lpfc HBA data structure.
1505  *
1506  * This routine wraps the actual SLI3 or SLI4 hba error attention handling
1507  * routine from the API jump table function pointer from the lpfc_hba struct.
1508  *
1509  * Return codes
1510  *   0 - success.
1511  *   Any other value - error.
1512  **/
1513 void
1514 lpfc_handle_eratt(struct lpfc_hba *phba)
1515 {
1516         (*phba->lpfc_handle_eratt)(phba);
1517 }
1518
1519 /**
1520  * lpfc_handle_latt - The HBA link event handler
1521  * @phba: pointer to lpfc hba data structure.
1522  *
1523  * This routine is invoked from the worker thread to handle a HBA host
1524  * attention link event.
1525  **/
1526 void
1527 lpfc_handle_latt(struct lpfc_hba *phba)
1528 {
1529         struct lpfc_vport *vport = phba->pport;
1530         struct lpfc_sli   *psli = &phba->sli;
1531         LPFC_MBOXQ_t *pmb;
1532         volatile uint32_t control;
1533         struct lpfc_dmabuf *mp;
1534         int rc = 0;
1535
1536         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
1537         if (!pmb) {
1538                 rc = 1;
1539                 goto lpfc_handle_latt_err_exit;
1540         }
1541
1542         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
1543         if (!mp) {
1544                 rc = 2;
1545                 goto lpfc_handle_latt_free_pmb;
1546         }
1547
1548         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
1549         if (!mp->virt) {
1550                 rc = 3;
1551                 goto lpfc_handle_latt_free_mp;
1552         }
1553
1554         /* Cleanup any outstanding ELS commands */
1555         lpfc_els_flush_all_cmd(phba);
1556
1557         psli->slistat.link_event++;
1558         lpfc_read_topology(phba, pmb, mp);
1559         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
1560         pmb->vport = vport;
1561         /* Block ELS IOCBs until we have processed this mbox command */
1562         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
1563         rc = lpfc_sli_issue_mbox (phba, pmb, MBX_NOWAIT);
1564         if (rc == MBX_NOT_FINISHED) {
1565                 rc = 4;
1566                 goto lpfc_handle_latt_free_mbuf;
1567         }
1568
1569         /* Clear Link Attention in HA REG */
1570         spin_lock_irq(&phba->hbalock);
1571         writel(HA_LATT, phba->HAregaddr);
1572         readl(phba->HAregaddr); /* flush */
1573         spin_unlock_irq(&phba->hbalock);
1574
1575         return;
1576
1577 lpfc_handle_latt_free_mbuf:
1578         phba->sli.ring[LPFC_ELS_RING].flag &= ~LPFC_STOP_IOCB_EVENT;
1579         lpfc_mbuf_free(phba, mp->virt, mp->phys);
1580 lpfc_handle_latt_free_mp:
1581         kfree(mp);
1582 lpfc_handle_latt_free_pmb:
1583         mempool_free(pmb, phba->mbox_mem_pool);
1584 lpfc_handle_latt_err_exit:
1585         /* Enable Link attention interrupts */
1586         spin_lock_irq(&phba->hbalock);
1587         psli->sli_flag |= LPFC_PROCESS_LA;
1588         control = readl(phba->HCregaddr);
1589         control |= HC_LAINT_ENA;
1590         writel(control, phba->HCregaddr);
1591         readl(phba->HCregaddr); /* flush */
1592
1593         /* Clear Link Attention in HA REG */
1594         writel(HA_LATT, phba->HAregaddr);
1595         readl(phba->HAregaddr); /* flush */
1596         spin_unlock_irq(&phba->hbalock);
1597         lpfc_linkdown(phba);
1598         phba->link_state = LPFC_HBA_ERROR;
1599
1600         lpfc_printf_log(phba, KERN_ERR, LOG_MBOX,
1601                      "0300 LATT: Cannot issue READ_LA: Data:%d\n", rc);
1602
1603         return;
1604 }
1605
1606 /**
1607  * lpfc_parse_vpd - Parse VPD (Vital Product Data)
1608  * @phba: pointer to lpfc hba data structure.
1609  * @vpd: pointer to the vital product data.
1610  * @len: length of the vital product data in bytes.
1611  *
1612  * This routine parses the Vital Product Data (VPD). The VPD is treated as
1613  * an array of characters. In this routine, the ModelName, ProgramType, and
1614  * ModelDesc, etc. fields of the phba data structure will be populated.
1615  *
1616  * Return codes
1617  *   0 - pointer to the VPD passed in is NULL
1618  *   1 - success
1619  **/
1620 int
1621 lpfc_parse_vpd(struct lpfc_hba *phba, uint8_t *vpd, int len)
1622 {
1623         uint8_t lenlo, lenhi;
1624         int Length;
1625         int i, j;
1626         int finished = 0;
1627         int index = 0;
1628
1629         if (!vpd)
1630                 return 0;
1631
1632         /* Vital Product */
1633         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
1634                         "0455 Vital Product Data: x%x x%x x%x x%x\n",
1635                         (uint32_t) vpd[0], (uint32_t) vpd[1], (uint32_t) vpd[2],
1636                         (uint32_t) vpd[3]);
1637         while (!finished && (index < (len - 4))) {
1638                 switch (vpd[index]) {
1639                 case 0x82:
1640                 case 0x91:
1641                         index += 1;
1642                         lenlo = vpd[index];
1643                         index += 1;
1644                         lenhi = vpd[index];
1645                         index += 1;
1646                         i = ((((unsigned short)lenhi) << 8) + lenlo);
1647                         index += i;
1648                         break;
1649                 case 0x90:
1650                         index += 1;
1651                         lenlo = vpd[index];
1652                         index += 1;
1653                         lenhi = vpd[index];
1654                         index += 1;
1655                         Length = ((((unsigned short)lenhi) << 8) + lenlo);
1656                         if (Length > len - index)
1657                                 Length = len - index;
1658                         while (Length > 0) {
1659                         /* Look for Serial Number */
1660                         if ((vpd[index] == 'S') && (vpd[index+1] == 'N')) {
1661                                 index += 2;
1662                                 i = vpd[index];
1663                                 index += 1;
1664                                 j = 0;
1665                                 Length -= (3+i);
1666                                 while(i--) {
1667                                         phba->SerialNumber[j++] = vpd[index++];
1668                                         if (j == 31)
1669                                                 break;
1670                                 }
1671                                 phba->SerialNumber[j] = 0;
1672                                 continue;
1673                         }
1674                         else if ((vpd[index] == 'V') && (vpd[index+1] == '1')) {
1675                                 phba->vpd_flag |= VPD_MODEL_DESC;
1676                                 index += 2;
1677                                 i = vpd[index];
1678                                 index += 1;
1679                                 j = 0;
1680                                 Length -= (3+i);
1681                                 while(i--) {
1682                                         phba->ModelDesc[j++] = vpd[index++];
1683                                         if (j == 255)
1684                                                 break;
1685                                 }
1686                                 phba->ModelDesc[j] = 0;
1687                                 continue;
1688                         }
1689                         else if ((vpd[index] == 'V') && (vpd[index+1] == '2')) {
1690                                 phba->vpd_flag |= VPD_MODEL_NAME;
1691                                 index += 2;
1692                                 i = vpd[index];
1693                                 index += 1;
1694                                 j = 0;
1695                                 Length -= (3+i);
1696                                 while(i--) {
1697                                         phba->ModelName[j++] = vpd[index++];
1698                                         if (j == 79)
1699                                                 break;
1700                                 }
1701                                 phba->ModelName[j] = 0;
1702                                 continue;
1703                         }
1704                         else if ((vpd[index] == 'V') && (vpd[index+1] == '3')) {
1705                                 phba->vpd_flag |= VPD_PROGRAM_TYPE;
1706                                 index += 2;
1707                                 i = vpd[index];
1708                                 index += 1;
1709                                 j = 0;
1710                                 Length -= (3+i);
1711                                 while(i--) {
1712                                         phba->ProgramType[j++] = vpd[index++];
1713                                         if (j == 255)
1714                                                 break;
1715                                 }
1716                                 phba->ProgramType[j] = 0;
1717                                 continue;
1718                         }
1719                         else if ((vpd[index] == 'V') && (vpd[index+1] == '4')) {
1720                                 phba->vpd_flag |= VPD_PORT;
1721                                 index += 2;
1722                                 i = vpd[index];
1723                                 index += 1;
1724                                 j = 0;
1725                                 Length -= (3+i);
1726                                 while(i--) {
1727                                 phba->Port[j++] = vpd[index++];
1728                                 if (j == 19)
1729                                         break;
1730                                 }
1731                                 phba->Port[j] = 0;
1732                                 continue;
1733                         }
1734                         else {
1735                                 index += 2;
1736                                 i = vpd[index];
1737                                 index += 1;
1738                                 index += i;
1739                                 Length -= (3 + i);
1740                         }
1741                 }
1742                 finished = 0;
1743                 break;
1744                 case 0x78:
1745                         finished = 1;
1746                         break;
1747                 default:
1748                         index ++;
1749                         break;
1750                 }
1751         }
1752
1753         return(1);
1754 }
1755
1756 /**
1757  * lpfc_get_hba_model_desc - Retrieve HBA device model name and description
1758  * @phba: pointer to lpfc hba data structure.
1759  * @mdp: pointer to the data structure to hold the derived model name.
1760  * @descp: pointer to the data structure to hold the derived description.
1761  *
1762  * This routine retrieves HBA's description based on its registered PCI device
1763  * ID. The @descp passed into this function points to an array of 256 chars. It
1764  * shall be returned with the model name, maximum speed, and the host bus type.
1765  * The @mdp passed into this function points to an array of 80 chars. When the
1766  * function returns, the @mdp will be filled with the model name.
1767  **/
1768 static void
1769 lpfc_get_hba_model_desc(struct lpfc_hba *phba, uint8_t *mdp, uint8_t *descp)
1770 {
1771         lpfc_vpd_t *vp;
1772         uint16_t dev_id = phba->pcidev->device;
1773         int max_speed;
1774         int GE = 0;
1775         int oneConnect = 0; /* default is not a oneConnect */
1776         struct {
1777                 char *name;
1778                 char *bus;
1779                 char *function;
1780         } m = {"<Unknown>", "", ""};
1781
1782         if (mdp && mdp[0] != '\0'
1783                 && descp && descp[0] != '\0')
1784                 return;
1785
1786         if (phba->lmt & LMT_16Gb)
1787                 max_speed = 16;
1788         else if (phba->lmt & LMT_10Gb)
1789                 max_speed = 10;
1790         else if (phba->lmt & LMT_8Gb)
1791                 max_speed = 8;
1792         else if (phba->lmt & LMT_4Gb)
1793                 max_speed = 4;
1794         else if (phba->lmt & LMT_2Gb)
1795                 max_speed = 2;
1796         else
1797                 max_speed = 1;
1798
1799         vp = &phba->vpd;
1800
1801         switch (dev_id) {
1802         case PCI_DEVICE_ID_FIREFLY:
1803                 m = (typeof(m)){"LP6000", "PCI", "Fibre Channel Adapter"};
1804                 break;
1805         case PCI_DEVICE_ID_SUPERFLY:
1806                 if (vp->rev.biuRev >= 1 && vp->rev.biuRev <= 3)
1807                         m = (typeof(m)){"LP7000", "PCI",
1808                                         "Fibre Channel Adapter"};
1809                 else
1810                         m = (typeof(m)){"LP7000E", "PCI",
1811                                         "Fibre Channel Adapter"};
1812                 break;
1813         case PCI_DEVICE_ID_DRAGONFLY:
1814                 m = (typeof(m)){"LP8000", "PCI",
1815                                 "Fibre Channel Adapter"};
1816                 break;
1817         case PCI_DEVICE_ID_CENTAUR:
1818                 if (FC_JEDEC_ID(vp->rev.biuRev) == CENTAUR_2G_JEDEC_ID)
1819                         m = (typeof(m)){"LP9002", "PCI",
1820                                         "Fibre Channel Adapter"};
1821                 else
1822                         m = (typeof(m)){"LP9000", "PCI",
1823                                         "Fibre Channel Adapter"};
1824                 break;
1825         case PCI_DEVICE_ID_RFLY:
1826                 m = (typeof(m)){"LP952", "PCI",
1827                                 "Fibre Channel Adapter"};
1828                 break;
1829         case PCI_DEVICE_ID_PEGASUS:
1830                 m = (typeof(m)){"LP9802", "PCI-X",
1831                                 "Fibre Channel Adapter"};
1832                 break;
1833         case PCI_DEVICE_ID_THOR:
1834                 m = (typeof(m)){"LP10000", "PCI-X",
1835                                 "Fibre Channel Adapter"};
1836                 break;
1837         case PCI_DEVICE_ID_VIPER:
1838                 m = (typeof(m)){"LPX1000",  "PCI-X",
1839                                 "Fibre Channel Adapter"};
1840                 break;
1841         case PCI_DEVICE_ID_PFLY:
1842                 m = (typeof(m)){"LP982", "PCI-X",
1843                                 "Fibre Channel Adapter"};
1844                 break;
1845         case PCI_DEVICE_ID_TFLY:
1846                 m = (typeof(m)){"LP1050", "PCI-X",
1847                                 "Fibre Channel Adapter"};
1848                 break;
1849         case PCI_DEVICE_ID_HELIOS:
1850                 m = (typeof(m)){"LP11000", "PCI-X2",
1851                                 "Fibre Channel Adapter"};
1852                 break;
1853         case PCI_DEVICE_ID_HELIOS_SCSP:
1854                 m = (typeof(m)){"LP11000-SP", "PCI-X2",
1855                                 "Fibre Channel Adapter"};
1856                 break;
1857         case PCI_DEVICE_ID_HELIOS_DCSP:
1858                 m = (typeof(m)){"LP11002-SP",  "PCI-X2",
1859                                 "Fibre Channel Adapter"};
1860                 break;
1861         case PCI_DEVICE_ID_NEPTUNE:
1862                 m = (typeof(m)){"LPe1000", "PCIe", "Fibre Channel Adapter"};
1863                 break;
1864         case PCI_DEVICE_ID_NEPTUNE_SCSP:
1865                 m = (typeof(m)){"LPe1000-SP", "PCIe", "Fibre Channel Adapter"};
1866                 break;
1867         case PCI_DEVICE_ID_NEPTUNE_DCSP:
1868                 m = (typeof(m)){"LPe1002-SP", "PCIe", "Fibre Channel Adapter"};
1869                 break;
1870         case PCI_DEVICE_ID_BMID:
1871                 m = (typeof(m)){"LP1150", "PCI-X2", "Fibre Channel Adapter"};
1872                 break;
1873         case PCI_DEVICE_ID_BSMB:
1874                 m = (typeof(m)){"LP111", "PCI-X2", "Fibre Channel Adapter"};
1875                 break;
1876         case PCI_DEVICE_ID_ZEPHYR:
1877                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1878                 break;
1879         case PCI_DEVICE_ID_ZEPHYR_SCSP:
1880                 m = (typeof(m)){"LPe11000", "PCIe", "Fibre Channel Adapter"};
1881                 break;
1882         case PCI_DEVICE_ID_ZEPHYR_DCSP:
1883                 m = (typeof(m)){"LP2105", "PCIe", "FCoE Adapter"};
1884                 GE = 1;
1885                 break;
1886         case PCI_DEVICE_ID_ZMID:
1887                 m = (typeof(m)){"LPe1150", "PCIe", "Fibre Channel Adapter"};
1888                 break;
1889         case PCI_DEVICE_ID_ZSMB:
1890                 m = (typeof(m)){"LPe111", "PCIe", "Fibre Channel Adapter"};
1891                 break;
1892         case PCI_DEVICE_ID_LP101:
1893                 m = (typeof(m)){"LP101", "PCI-X", "Fibre Channel Adapter"};
1894                 break;
1895         case PCI_DEVICE_ID_LP10000S:
1896                 m = (typeof(m)){"LP10000-S", "PCI", "Fibre Channel Adapter"};
1897                 break;
1898         case PCI_DEVICE_ID_LP11000S:
1899                 m = (typeof(m)){"LP11000-S", "PCI-X2", "Fibre Channel Adapter"};
1900                 break;
1901         case PCI_DEVICE_ID_LPE11000S:
1902                 m = (typeof(m)){"LPe11000-S", "PCIe", "Fibre Channel Adapter"};
1903                 break;
1904         case PCI_DEVICE_ID_SAT:
1905                 m = (typeof(m)){"LPe12000", "PCIe", "Fibre Channel Adapter"};
1906                 break;
1907         case PCI_DEVICE_ID_SAT_MID:
1908                 m = (typeof(m)){"LPe1250", "PCIe", "Fibre Channel Adapter"};
1909                 break;
1910         case PCI_DEVICE_ID_SAT_SMB:
1911                 m = (typeof(m)){"LPe121", "PCIe", "Fibre Channel Adapter"};
1912                 break;
1913         case PCI_DEVICE_ID_SAT_DCSP:
1914                 m = (typeof(m)){"LPe12002-SP", "PCIe", "Fibre Channel Adapter"};
1915                 break;
1916         case PCI_DEVICE_ID_SAT_SCSP:
1917                 m = (typeof(m)){"LPe12000-SP", "PCIe", "Fibre Channel Adapter"};
1918                 break;
1919         case PCI_DEVICE_ID_SAT_S:
1920                 m = (typeof(m)){"LPe12000-S", "PCIe", "Fibre Channel Adapter"};
1921                 break;
1922         case PCI_DEVICE_ID_HORNET:
1923                 m = (typeof(m)){"LP21000", "PCIe", "FCoE Adapter"};
1924                 GE = 1;
1925                 break;
1926         case PCI_DEVICE_ID_PROTEUS_VF:
1927                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1928                                 "Fibre Channel Adapter"};
1929                 break;
1930         case PCI_DEVICE_ID_PROTEUS_PF:
1931                 m = (typeof(m)){"LPev12000", "PCIe IOV",
1932                                 "Fibre Channel Adapter"};
1933                 break;
1934         case PCI_DEVICE_ID_PROTEUS_S:
1935                 m = (typeof(m)){"LPemv12002-S", "PCIe IOV",
1936                                 "Fibre Channel Adapter"};
1937                 break;
1938         case PCI_DEVICE_ID_TIGERSHARK:
1939                 oneConnect = 1;
1940                 m = (typeof(m)){"OCe10100", "PCIe", "FCoE"};
1941                 break;
1942         case PCI_DEVICE_ID_TOMCAT:
1943                 oneConnect = 1;
1944                 m = (typeof(m)){"OCe11100", "PCIe", "FCoE"};
1945                 break;
1946         case PCI_DEVICE_ID_FALCON:
1947                 m = (typeof(m)){"LPSe12002-ML1-E", "PCIe",
1948                                 "EmulexSecure Fibre"};
1949                 break;
1950         case PCI_DEVICE_ID_BALIUS:
1951                 m = (typeof(m)){"LPVe12002", "PCIe Shared I/O",
1952                                 "Fibre Channel Adapter"};
1953                 break;
1954         case PCI_DEVICE_ID_LANCER_FC:
1955         case PCI_DEVICE_ID_LANCER_FC_VF:
1956                 m = (typeof(m)){"LPe16000", "PCIe", "Fibre Channel Adapter"};
1957                 break;
1958         case PCI_DEVICE_ID_LANCER_FCOE:
1959         case PCI_DEVICE_ID_LANCER_FCOE_VF:
1960                 oneConnect = 1;
1961                 m = (typeof(m)){"OCe50100", "PCIe", "FCoE"};
1962                 break;
1963         default:
1964                 m = (typeof(m)){"Unknown", "", ""};
1965                 break;
1966         }
1967
1968         if (mdp && mdp[0] == '\0')
1969                 snprintf(mdp, 79,"%s", m.name);
1970         /*
1971          * oneConnect hba requires special processing, they are all initiators
1972          * and we put the port number on the end
1973          */
1974         if (descp && descp[0] == '\0') {
1975                 if (oneConnect)
1976                         snprintf(descp, 255,
1977                                 "Emulex OneConnect %s, %s Initiator, Port %s",
1978                                 m.name, m.function,
1979                                 phba->Port);
1980                 else
1981                         snprintf(descp, 255,
1982                                 "Emulex %s %d%s %s %s",
1983                                 m.name, max_speed, (GE) ? "GE" : "Gb",
1984                                 m.bus, m.function);
1985         }
1986 }
1987
1988 /**
1989  * lpfc_post_buffer - Post IOCB(s) with DMA buffer descriptor(s) to a IOCB ring
1990  * @phba: pointer to lpfc hba data structure.
1991  * @pring: pointer to a IOCB ring.
1992  * @cnt: the number of IOCBs to be posted to the IOCB ring.
1993  *
1994  * This routine posts a given number of IOCBs with the associated DMA buffer
1995  * descriptors specified by the cnt argument to the given IOCB ring.
1996  *
1997  * Return codes
1998  *   The number of IOCBs NOT able to be posted to the IOCB ring.
1999  **/
2000 int
2001 lpfc_post_buffer(struct lpfc_hba *phba, struct lpfc_sli_ring *pring, int cnt)
2002 {
2003         IOCB_t *icmd;
2004         struct lpfc_iocbq *iocb;
2005         struct lpfc_dmabuf *mp1, *mp2;
2006
2007         cnt += pring->missbufcnt;
2008
2009         /* While there are buffers to post */
2010         while (cnt > 0) {
2011                 /* Allocate buffer for  command iocb */
2012                 iocb = lpfc_sli_get_iocbq(phba);
2013                 if (iocb == NULL) {
2014                         pring->missbufcnt = cnt;
2015                         return cnt;
2016                 }
2017                 icmd = &iocb->iocb;
2018
2019                 /* 2 buffers can be posted per command */
2020                 /* Allocate buffer to post */
2021                 mp1 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2022                 if (mp1)
2023                     mp1->virt = lpfc_mbuf_alloc(phba, MEM_PRI, &mp1->phys);
2024                 if (!mp1 || !mp1->virt) {
2025                         kfree(mp1);
2026                         lpfc_sli_release_iocbq(phba, iocb);
2027                         pring->missbufcnt = cnt;
2028                         return cnt;
2029                 }
2030
2031                 INIT_LIST_HEAD(&mp1->list);
2032                 /* Allocate buffer to post */
2033                 if (cnt > 1) {
2034                         mp2 = kmalloc(sizeof (struct lpfc_dmabuf), GFP_KERNEL);
2035                         if (mp2)
2036                                 mp2->virt = lpfc_mbuf_alloc(phba, MEM_PRI,
2037                                                             &mp2->phys);
2038                         if (!mp2 || !mp2->virt) {
2039                                 kfree(mp2);
2040                                 lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2041                                 kfree(mp1);
2042                                 lpfc_sli_release_iocbq(phba, iocb);
2043                                 pring->missbufcnt = cnt;
2044                                 return cnt;
2045                         }
2046
2047                         INIT_LIST_HEAD(&mp2->list);
2048                 } else {
2049                         mp2 = NULL;
2050                 }
2051
2052                 icmd->un.cont64[0].addrHigh = putPaddrHigh(mp1->phys);
2053                 icmd->un.cont64[0].addrLow = putPaddrLow(mp1->phys);
2054                 icmd->un.cont64[0].tus.f.bdeSize = FCELSSIZE;
2055                 icmd->ulpBdeCount = 1;
2056                 cnt--;
2057                 if (mp2) {
2058                         icmd->un.cont64[1].addrHigh = putPaddrHigh(mp2->phys);
2059                         icmd->un.cont64[1].addrLow = putPaddrLow(mp2->phys);
2060                         icmd->un.cont64[1].tus.f.bdeSize = FCELSSIZE;
2061                         cnt--;
2062                         icmd->ulpBdeCount = 2;
2063                 }
2064
2065                 icmd->ulpCommand = CMD_QUE_RING_BUF64_CN;
2066                 icmd->ulpLe = 1;
2067
2068                 if (lpfc_sli_issue_iocb(phba, pring->ringno, iocb, 0) ==
2069                     IOCB_ERROR) {
2070                         lpfc_mbuf_free(phba, mp1->virt, mp1->phys);
2071                         kfree(mp1);
2072                         cnt++;
2073                         if (mp2) {
2074                                 lpfc_mbuf_free(phba, mp2->virt, mp2->phys);
2075                                 kfree(mp2);
2076                                 cnt++;
2077                         }
2078                         lpfc_sli_release_iocbq(phba, iocb);
2079                         pring->missbufcnt = cnt;
2080                         return cnt;
2081                 }
2082                 lpfc_sli_ringpostbuf_put(phba, pring, mp1);
2083                 if (mp2)
2084                         lpfc_sli_ringpostbuf_put(phba, pring, mp2);
2085         }
2086         pring->missbufcnt = 0;
2087         return 0;
2088 }
2089
2090 /**
2091  * lpfc_post_rcv_buf - Post the initial receive IOCB buffers to ELS ring
2092  * @phba: pointer to lpfc hba data structure.
2093  *
2094  * This routine posts initial receive IOCB buffers to the ELS ring. The
2095  * current number of initial IOCB buffers specified by LPFC_BUF_RING0 is
2096  * set to 64 IOCBs.
2097  *
2098  * Return codes
2099  *   0 - success (currently always success)
2100  **/
2101 static int
2102 lpfc_post_rcv_buf(struct lpfc_hba *phba)
2103 {
2104         struct lpfc_sli *psli = &phba->sli;
2105
2106         /* Ring 0, ELS / CT buffers */
2107         lpfc_post_buffer(phba, &psli->ring[LPFC_ELS_RING], LPFC_BUF_RING0);
2108         /* Ring 2 - FCP no buffers needed */
2109
2110         return 0;
2111 }
2112
2113 #define S(N,V) (((V)<<(N))|((V)>>(32-(N))))
2114
2115 /**
2116  * lpfc_sha_init - Set up initial array of hash table entries
2117  * @HashResultPointer: pointer to an array as hash table.
2118  *
2119  * This routine sets up the initial values to the array of hash table entries
2120  * for the LC HBAs.
2121  **/
2122 static void
2123 lpfc_sha_init(uint32_t * HashResultPointer)
2124 {
2125         HashResultPointer[0] = 0x67452301;
2126         HashResultPointer[1] = 0xEFCDAB89;
2127         HashResultPointer[2] = 0x98BADCFE;
2128         HashResultPointer[3] = 0x10325476;
2129         HashResultPointer[4] = 0xC3D2E1F0;
2130 }
2131
2132 /**
2133  * lpfc_sha_iterate - Iterate initial hash table with the working hash table
2134  * @HashResultPointer: pointer to an initial/result hash table.
2135  * @HashWorkingPointer: pointer to an working hash table.
2136  *
2137  * This routine iterates an initial hash table pointed by @HashResultPointer
2138  * with the values from the working hash table pointeed by @HashWorkingPointer.
2139  * The results are putting back to the initial hash table, returned through
2140  * the @HashResultPointer as the result hash table.
2141  **/
2142 static void
2143 lpfc_sha_iterate(uint32_t * HashResultPointer, uint32_t * HashWorkingPointer)
2144 {
2145         int t;
2146         uint32_t TEMP;
2147         uint32_t A, B, C, D, E;
2148         t = 16;
2149         do {
2150                 HashWorkingPointer[t] =
2151                     S(1,
2152                       HashWorkingPointer[t - 3] ^ HashWorkingPointer[t -
2153                                                                      8] ^
2154                       HashWorkingPointer[t - 14] ^ HashWorkingPointer[t - 16]);
2155         } while (++t <= 79);
2156         t = 0;
2157         A = HashResultPointer[0];
2158         B = HashResultPointer[1];
2159         C = HashResultPointer[2];
2160         D = HashResultPointer[3];
2161         E = HashResultPointer[4];
2162
2163         do {
2164                 if (t < 20) {
2165                         TEMP = ((B & C) | ((~B) & D)) + 0x5A827999;
2166                 } else if (t < 40) {
2167                         TEMP = (B ^ C ^ D) + 0x6ED9EBA1;
2168                 } else if (t < 60) {
2169                         TEMP = ((B & C) | (B & D) | (C & D)) + 0x8F1BBCDC;
2170                 } else {
2171                         TEMP = (B ^ C ^ D) + 0xCA62C1D6;
2172                 }
2173                 TEMP += S(5, A) + E + HashWorkingPointer[t];
2174                 E = D;
2175                 D = C;
2176                 C = S(30, B);
2177                 B = A;
2178                 A = TEMP;
2179         } while (++t <= 79);
2180
2181         HashResultPointer[0] += A;
2182         HashResultPointer[1] += B;
2183         HashResultPointer[2] += C;
2184         HashResultPointer[3] += D;
2185         HashResultPointer[4] += E;
2186
2187 }
2188
2189 /**
2190  * lpfc_challenge_key - Create challenge key based on WWPN of the HBA
2191  * @RandomChallenge: pointer to the entry of host challenge random number array.
2192  * @HashWorking: pointer to the entry of the working hash array.
2193  *
2194  * This routine calculates the working hash array referred by @HashWorking
2195  * from the challenge random numbers associated with the host, referred by
2196  * @RandomChallenge. The result is put into the entry of the working hash
2197  * array and returned by reference through @HashWorking.
2198  **/
2199 static void
2200 lpfc_challenge_key(uint32_t * RandomChallenge, uint32_t * HashWorking)
2201 {
2202         *HashWorking = (*RandomChallenge ^ *HashWorking);
2203 }
2204
2205 /**
2206  * lpfc_hba_init - Perform special handling for LC HBA initialization
2207  * @phba: pointer to lpfc hba data structure.
2208  * @hbainit: pointer to an array of unsigned 32-bit integers.
2209  *
2210  * This routine performs the special handling for LC HBA initialization.
2211  **/
2212 void
2213 lpfc_hba_init(struct lpfc_hba *phba, uint32_t *hbainit)
2214 {
2215         int t;
2216         uint32_t *HashWorking;
2217         uint32_t *pwwnn = (uint32_t *) phba->wwnn;
2218
2219         HashWorking = kcalloc(80, sizeof(uint32_t), GFP_KERNEL);
2220         if (!HashWorking)
2221                 return;
2222
2223         HashWorking[0] = HashWorking[78] = *pwwnn++;
2224         HashWorking[1] = HashWorking[79] = *pwwnn;
2225
2226         for (t = 0; t < 7; t++)
2227                 lpfc_challenge_key(phba->RandomData + t, HashWorking + t);
2228
2229         lpfc_sha_init(hbainit);
2230         lpfc_sha_iterate(hbainit, HashWorking);
2231         kfree(HashWorking);
2232 }
2233
2234 /**
2235  * lpfc_cleanup - Performs vport cleanups before deleting a vport
2236  * @vport: pointer to a virtual N_Port data structure.
2237  *
2238  * This routine performs the necessary cleanups before deleting the @vport.
2239  * It invokes the discovery state machine to perform necessary state
2240  * transitions and to release the ndlps associated with the @vport. Note,
2241  * the physical port is treated as @vport 0.
2242  **/
2243 void
2244 lpfc_cleanup(struct lpfc_vport *vport)
2245 {
2246         struct lpfc_hba   *phba = vport->phba;
2247         struct lpfc_nodelist *ndlp, *next_ndlp;
2248         int i = 0;
2249
2250         if (phba->link_state > LPFC_LINK_DOWN)
2251                 lpfc_port_link_failure(vport);
2252
2253         list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
2254                 if (!NLP_CHK_NODE_ACT(ndlp)) {
2255                         ndlp = lpfc_enable_node(vport, ndlp,
2256                                                 NLP_STE_UNUSED_NODE);
2257                         if (!ndlp)
2258                                 continue;
2259                         spin_lock_irq(&phba->ndlp_lock);
2260                         NLP_SET_FREE_REQ(ndlp);
2261                         spin_unlock_irq(&phba->ndlp_lock);
2262                         /* Trigger the release of the ndlp memory */
2263                         lpfc_nlp_put(ndlp);
2264                         continue;
2265                 }
2266                 spin_lock_irq(&phba->ndlp_lock);
2267                 if (NLP_CHK_FREE_REQ(ndlp)) {
2268                         /* The ndlp should not be in memory free mode already */
2269                         spin_unlock_irq(&phba->ndlp_lock);
2270                         continue;
2271                 } else
2272                         /* Indicate request for freeing ndlp memory */
2273                         NLP_SET_FREE_REQ(ndlp);
2274                 spin_unlock_irq(&phba->ndlp_lock);
2275
2276                 if (vport->port_type != LPFC_PHYSICAL_PORT &&
2277                     ndlp->nlp_DID == Fabric_DID) {
2278                         /* Just free up ndlp with Fabric_DID for vports */
2279                         lpfc_nlp_put(ndlp);
2280                         continue;
2281                 }
2282
2283                 if (ndlp->nlp_type & NLP_FABRIC)
2284                         lpfc_disc_state_machine(vport, ndlp, NULL,
2285                                         NLP_EVT_DEVICE_RECOVERY);
2286
2287                 lpfc_disc_state_machine(vport, ndlp, NULL,
2288                                              NLP_EVT_DEVICE_RM);
2289
2290         }
2291
2292         /* At this point, ALL ndlp's should be gone
2293          * because of the previous NLP_EVT_DEVICE_RM.
2294          * Lets wait for this to happen, if needed.
2295          */
2296         while (!list_empty(&vport->fc_nodes)) {
2297                 if (i++ > 3000) {
2298                         lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
2299                                 "0233 Nodelist not empty\n");
2300                         list_for_each_entry_safe(ndlp, next_ndlp,
2301                                                 &vport->fc_nodes, nlp_listp) {
2302                                 lpfc_printf_vlog(ndlp->vport, KERN_ERR,
2303                                                 LOG_NODE,
2304                                                 "0282 did:x%x ndlp:x%p "
2305                                                 "usgmap:x%x refcnt:%d\n",
2306                                                 ndlp->nlp_DID, (void *)ndlp,
2307                                                 ndlp->nlp_usg_map,
2308                                                 atomic_read(
2309                                                         &ndlp->kref.refcount));
2310                         }
2311                         break;
2312                 }
2313
2314                 /* Wait for any activity on ndlps to settle */
2315                 msleep(10);
2316         }
2317         lpfc_cleanup_vports_rrqs(vport, NULL);
2318 }
2319
2320 /**
2321  * lpfc_stop_vport_timers - Stop all the timers associated with a vport
2322  * @vport: pointer to a virtual N_Port data structure.
2323  *
2324  * This routine stops all the timers associated with a @vport. This function
2325  * is invoked before disabling or deleting a @vport. Note that the physical
2326  * port is treated as @vport 0.
2327  **/
2328 void
2329 lpfc_stop_vport_timers(struct lpfc_vport *vport)
2330 {
2331         del_timer_sync(&vport->els_tmofunc);
2332         del_timer_sync(&vport->fc_fdmitmo);
2333         del_timer_sync(&vport->delayed_disc_tmo);
2334         lpfc_can_disctmo(vport);
2335         return;
2336 }
2337
2338 /**
2339  * __lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2340  * @phba: pointer to lpfc hba data structure.
2341  *
2342  * This routine stops the SLI4 FCF rediscover wait timer if it's on. The
2343  * caller of this routine should already hold the host lock.
2344  **/
2345 void
2346 __lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2347 {
2348         /* Clear pending FCF rediscovery wait flag */
2349         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
2350
2351         /* Now, try to stop the timer */
2352         del_timer(&phba->fcf.redisc_wait);
2353 }
2354
2355 /**
2356  * lpfc_sli4_stop_fcf_redisc_wait_timer - Stop FCF rediscovery wait timer
2357  * @phba: pointer to lpfc hba data structure.
2358  *
2359  * This routine stops the SLI4 FCF rediscover wait timer if it's on. It
2360  * checks whether the FCF rediscovery wait timer is pending with the host
2361  * lock held before proceeding with disabling the timer and clearing the
2362  * wait timer pendig flag.
2363  **/
2364 void
2365 lpfc_sli4_stop_fcf_redisc_wait_timer(struct lpfc_hba *phba)
2366 {
2367         spin_lock_irq(&phba->hbalock);
2368         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
2369                 /* FCF rediscovery timer already fired or stopped */
2370                 spin_unlock_irq(&phba->hbalock);
2371                 return;
2372         }
2373         __lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2374         /* Clear failover in progress flags */
2375         phba->fcf.fcf_flag &= ~(FCF_DEAD_DISC | FCF_ACVL_DISC);
2376         spin_unlock_irq(&phba->hbalock);
2377 }
2378
2379 /**
2380  * lpfc_stop_hba_timers - Stop all the timers associated with an HBA
2381  * @phba: pointer to lpfc hba data structure.
2382  *
2383  * This routine stops all the timers associated with a HBA. This function is
2384  * invoked before either putting a HBA offline or unloading the driver.
2385  **/
2386 void
2387 lpfc_stop_hba_timers(struct lpfc_hba *phba)
2388 {
2389         lpfc_stop_vport_timers(phba->pport);
2390         del_timer_sync(&phba->sli.mbox_tmo);
2391         del_timer_sync(&phba->fabric_block_timer);
2392         del_timer_sync(&phba->eratt_poll);
2393         del_timer_sync(&phba->hb_tmofunc);
2394         if (phba->sli_rev == LPFC_SLI_REV4) {
2395                 del_timer_sync(&phba->rrq_tmr);
2396                 phba->hba_flag &= ~HBA_RRQ_ACTIVE;
2397         }
2398         phba->hb_outstanding = 0;
2399
2400         switch (phba->pci_dev_grp) {
2401         case LPFC_PCI_DEV_LP:
2402                 /* Stop any LightPulse device specific driver timers */
2403                 del_timer_sync(&phba->fcp_poll_timer);
2404                 break;
2405         case LPFC_PCI_DEV_OC:
2406                 /* Stop any OneConnect device sepcific driver timers */
2407                 lpfc_sli4_stop_fcf_redisc_wait_timer(phba);
2408                 break;
2409         default:
2410                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
2411                                 "0297 Invalid device group (x%x)\n",
2412                                 phba->pci_dev_grp);
2413                 break;
2414         }
2415         return;
2416 }
2417
2418 /**
2419  * lpfc_block_mgmt_io - Mark a HBA's management interface as blocked
2420  * @phba: pointer to lpfc hba data structure.
2421  *
2422  * This routine marks a HBA's management interface as blocked. Once the HBA's
2423  * management interface is marked as blocked, all the user space access to
2424  * the HBA, whether they are from sysfs interface or libdfc interface will
2425  * all be blocked. The HBA is set to block the management interface when the
2426  * driver prepares the HBA interface for online or offline.
2427  **/
2428 static void
2429 lpfc_block_mgmt_io(struct lpfc_hba * phba)
2430 {
2431         unsigned long iflag;
2432         uint8_t actcmd = MBX_HEARTBEAT;
2433         unsigned long timeout;
2434
2435
2436         spin_lock_irqsave(&phba->hbalock, iflag);
2437         phba->sli.sli_flag |= LPFC_BLOCK_MGMT_IO;
2438         if (phba->sli.mbox_active)
2439                 actcmd = phba->sli.mbox_active->u.mb.mbxCommand;
2440         spin_unlock_irqrestore(&phba->hbalock, iflag);
2441         /* Determine how long we might wait for the active mailbox
2442          * command to be gracefully completed by firmware.
2443          */
2444         timeout = msecs_to_jiffies(lpfc_mbox_tmo_val(phba, actcmd) * 1000) +
2445                         jiffies;
2446         /* Wait for the outstnading mailbox command to complete */
2447         while (phba->sli.mbox_active) {
2448                 /* Check active mailbox complete status every 2ms */
2449                 msleep(2);
2450                 if (time_after(jiffies, timeout)) {
2451                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
2452                                 "2813 Mgmt IO is Blocked %x "
2453                                 "- mbox cmd %x still active\n",
2454                                 phba->sli.sli_flag, actcmd);
2455                         break;
2456                 }
2457         }
2458 }
2459
2460 /**
2461  * lpfc_online - Initialize and bring a HBA online
2462  * @phba: pointer to lpfc hba data structure.
2463  *
2464  * This routine initializes the HBA and brings a HBA online. During this
2465  * process, the management interface is blocked to prevent user space access
2466  * to the HBA interfering with the driver initialization.
2467  *
2468  * Return codes
2469  *   0 - successful
2470  *   1 - failed
2471  **/
2472 int
2473 lpfc_online(struct lpfc_hba *phba)
2474 {
2475         struct lpfc_vport *vport;
2476         struct lpfc_vport **vports;
2477         int i;
2478
2479         if (!phba)
2480                 return 0;
2481         vport = phba->pport;
2482
2483         if (!(vport->fc_flag & FC_OFFLINE_MODE))
2484                 return 0;
2485
2486         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2487                         "0458 Bring Adapter online\n");
2488
2489         lpfc_block_mgmt_io(phba);
2490
2491         if (!lpfc_sli_queue_setup(phba)) {
2492                 lpfc_unblock_mgmt_io(phba);
2493                 return 1;
2494         }
2495
2496         if (phba->sli_rev == LPFC_SLI_REV4) {
2497                 if (lpfc_sli4_hba_setup(phba)) { /* Initialize SLI4 HBA */
2498                         lpfc_unblock_mgmt_io(phba);
2499                         return 1;
2500                 }
2501         } else {
2502                 if (lpfc_sli_hba_setup(phba)) { /* Initialize SLI2/SLI3 HBA */
2503                         lpfc_unblock_mgmt_io(phba);
2504                         return 1;
2505                 }
2506         }
2507
2508         vports = lpfc_create_vport_work_array(phba);
2509         if (vports != NULL)
2510                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2511                         struct Scsi_Host *shost;
2512                         shost = lpfc_shost_from_vport(vports[i]);
2513                         spin_lock_irq(shost->host_lock);
2514                         vports[i]->fc_flag &= ~FC_OFFLINE_MODE;
2515                         if (phba->sli3_options & LPFC_SLI3_NPIV_ENABLED)
2516                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2517                         if (phba->sli_rev == LPFC_SLI_REV4)
2518                                 vports[i]->fc_flag |= FC_VPORT_NEEDS_INIT_VPI;
2519                         spin_unlock_irq(shost->host_lock);
2520                 }
2521                 lpfc_destroy_vport_work_array(phba, vports);
2522
2523         lpfc_unblock_mgmt_io(phba);
2524         return 0;
2525 }
2526
2527 /**
2528  * lpfc_unblock_mgmt_io - Mark a HBA's management interface to be not blocked
2529  * @phba: pointer to lpfc hba data structure.
2530  *
2531  * This routine marks a HBA's management interface as not blocked. Once the
2532  * HBA's management interface is marked as not blocked, all the user space
2533  * access to the HBA, whether they are from sysfs interface or libdfc
2534  * interface will be allowed. The HBA is set to block the management interface
2535  * when the driver prepares the HBA interface for online or offline and then
2536  * set to unblock the management interface afterwards.
2537  **/
2538 void
2539 lpfc_unblock_mgmt_io(struct lpfc_hba * phba)
2540 {
2541         unsigned long iflag;
2542
2543         spin_lock_irqsave(&phba->hbalock, iflag);
2544         phba->sli.sli_flag &= ~LPFC_BLOCK_MGMT_IO;
2545         spin_unlock_irqrestore(&phba->hbalock, iflag);
2546 }
2547
2548 /**
2549  * lpfc_offline_prep - Prepare a HBA to be brought offline
2550  * @phba: pointer to lpfc hba data structure.
2551  *
2552  * This routine is invoked to prepare a HBA to be brought offline. It performs
2553  * unregistration login to all the nodes on all vports and flushes the mailbox
2554  * queue to make it ready to be brought offline.
2555  **/
2556 void
2557 lpfc_offline_prep(struct lpfc_hba * phba)
2558 {
2559         struct lpfc_vport *vport = phba->pport;
2560         struct lpfc_nodelist  *ndlp, *next_ndlp;
2561         struct lpfc_vport **vports;
2562         struct Scsi_Host *shost;
2563         int i;
2564
2565         if (vport->fc_flag & FC_OFFLINE_MODE)
2566                 return;
2567
2568         lpfc_block_mgmt_io(phba);
2569
2570         lpfc_linkdown(phba);
2571
2572         /* Issue an unreg_login to all nodes on all vports */
2573         vports = lpfc_create_vport_work_array(phba);
2574         if (vports != NULL) {
2575                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2576                         if (vports[i]->load_flag & FC_UNLOADING)
2577                                 continue;
2578                         shost = lpfc_shost_from_vport(vports[i]);
2579                         spin_lock_irq(shost->host_lock);
2580                         vports[i]->vpi_state &= ~LPFC_VPI_REGISTERED;
2581                         vports[i]->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2582                         vports[i]->fc_flag &= ~FC_VFI_REGISTERED;
2583                         spin_unlock_irq(shost->host_lock);
2584
2585                         shost = lpfc_shost_from_vport(vports[i]);
2586                         list_for_each_entry_safe(ndlp, next_ndlp,
2587                                                  &vports[i]->fc_nodes,
2588                                                  nlp_listp) {
2589                                 if (!NLP_CHK_NODE_ACT(ndlp))
2590                                         continue;
2591                                 if (ndlp->nlp_state == NLP_STE_UNUSED_NODE)
2592                                         continue;
2593                                 if (ndlp->nlp_type & NLP_FABRIC) {
2594                                         lpfc_disc_state_machine(vports[i], ndlp,
2595                                                 NULL, NLP_EVT_DEVICE_RECOVERY);
2596                                         lpfc_disc_state_machine(vports[i], ndlp,
2597                                                 NULL, NLP_EVT_DEVICE_RM);
2598                                 }
2599                                 spin_lock_irq(shost->host_lock);
2600                                 ndlp->nlp_flag &= ~NLP_NPR_ADISC;
2601                                 spin_unlock_irq(shost->host_lock);
2602                                 lpfc_unreg_rpi(vports[i], ndlp);
2603                         }
2604                 }
2605         }
2606         lpfc_destroy_vport_work_array(phba, vports);
2607
2608         lpfc_sli_mbox_sys_shutdown(phba);
2609 }
2610
2611 /**
2612  * lpfc_offline - Bring a HBA offline
2613  * @phba: pointer to lpfc hba data structure.
2614  *
2615  * This routine actually brings a HBA offline. It stops all the timers
2616  * associated with the HBA, brings down the SLI layer, and eventually
2617  * marks the HBA as in offline state for the upper layer protocol.
2618  **/
2619 void
2620 lpfc_offline(struct lpfc_hba *phba)
2621 {
2622         struct Scsi_Host  *shost;
2623         struct lpfc_vport **vports;
2624         int i;
2625
2626         if (phba->pport->fc_flag & FC_OFFLINE_MODE)
2627                 return;
2628
2629         /* stop port and all timers associated with this hba */
2630         lpfc_stop_port(phba);
2631         vports = lpfc_create_vport_work_array(phba);
2632         if (vports != NULL)
2633                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
2634                         lpfc_stop_vport_timers(vports[i]);
2635         lpfc_destroy_vport_work_array(phba, vports);
2636         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
2637                         "0460 Bring Adapter offline\n");
2638         /* Bring down the SLI Layer and cleanup.  The HBA is offline
2639            now.  */
2640         lpfc_sli_hba_down(phba);
2641         spin_lock_irq(&phba->hbalock);
2642         phba->work_ha = 0;
2643         spin_unlock_irq(&phba->hbalock);
2644         vports = lpfc_create_vport_work_array(phba);
2645         if (vports != NULL)
2646                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
2647                         shost = lpfc_shost_from_vport(vports[i]);
2648                         spin_lock_irq(shost->host_lock);
2649                         vports[i]->work_port_events = 0;
2650                         vports[i]->fc_flag |= FC_OFFLINE_MODE;
2651                         spin_unlock_irq(shost->host_lock);
2652                 }
2653         lpfc_destroy_vport_work_array(phba, vports);
2654 }
2655
2656 /**
2657  * lpfc_scsi_free - Free all the SCSI buffers and IOCBs from driver lists
2658  * @phba: pointer to lpfc hba data structure.
2659  *
2660  * This routine is to free all the SCSI buffers and IOCBs from the driver
2661  * list back to kernel. It is called from lpfc_pci_remove_one to free
2662  * the internal resources before the device is removed from the system.
2663  *
2664  * Return codes
2665  *   0 - successful (for now, it always returns 0)
2666  **/
2667 static int
2668 lpfc_scsi_free(struct lpfc_hba *phba)
2669 {
2670         struct lpfc_scsi_buf *sb, *sb_next;
2671         struct lpfc_iocbq *io, *io_next;
2672
2673         spin_lock_irq(&phba->hbalock);
2674         /* Release all the lpfc_scsi_bufs maintained by this host. */
2675         spin_lock(&phba->scsi_buf_list_lock);
2676         list_for_each_entry_safe(sb, sb_next, &phba->lpfc_scsi_buf_list, list) {
2677                 list_del(&sb->list);
2678                 pci_pool_free(phba->lpfc_scsi_dma_buf_pool, sb->data,
2679                               sb->dma_handle);
2680                 kfree(sb);
2681                 phba->total_scsi_bufs--;
2682         }
2683         spin_unlock(&phba->scsi_buf_list_lock);
2684
2685         /* Release all the lpfc_iocbq entries maintained by this host. */
2686         list_for_each_entry_safe(io, io_next, &phba->lpfc_iocb_list, list) {
2687                 list_del(&io->list);
2688                 kfree(io);
2689                 phba->total_iocbq_bufs--;
2690         }
2691
2692         spin_unlock_irq(&phba->hbalock);
2693         return 0;
2694 }
2695
2696 /**
2697  * lpfc_create_port - Create an FC port
2698  * @phba: pointer to lpfc hba data structure.
2699  * @instance: a unique integer ID to this FC port.
2700  * @dev: pointer to the device data structure.
2701  *
2702  * This routine creates a FC port for the upper layer protocol. The FC port
2703  * can be created on top of either a physical port or a virtual port provided
2704  * by the HBA. This routine also allocates a SCSI host data structure (shost)
2705  * and associates the FC port created before adding the shost into the SCSI
2706  * layer.
2707  *
2708  * Return codes
2709  *   @vport - pointer to the virtual N_Port data structure.
2710  *   NULL - port create failed.
2711  **/
2712 struct lpfc_vport *
2713 lpfc_create_port(struct lpfc_hba *phba, int instance, struct device *dev)
2714 {
2715         struct lpfc_vport *vport;
2716         struct Scsi_Host  *shost;
2717         int error = 0;
2718
2719         if (dev != &phba->pcidev->dev)
2720                 shost = scsi_host_alloc(&lpfc_vport_template,
2721                                         sizeof(struct lpfc_vport));
2722         else
2723                 shost = scsi_host_alloc(&lpfc_template,
2724                                         sizeof(struct lpfc_vport));
2725         if (!shost)
2726                 goto out;
2727
2728         vport = (struct lpfc_vport *) shost->hostdata;
2729         vport->phba = phba;
2730         vport->load_flag |= FC_LOADING;
2731         vport->fc_flag |= FC_VPORT_NEEDS_REG_VPI;
2732         vport->fc_rscn_flush = 0;
2733
2734         lpfc_get_vport_cfgparam(vport);
2735         shost->unique_id = instance;
2736         shost->max_id = LPFC_MAX_TARGET;
2737         shost->max_lun = vport->cfg_max_luns;
2738         shost->this_id = -1;
2739         shost->max_cmd_len = 16;
2740         if (phba->sli_rev == LPFC_SLI_REV4) {
2741                 shost->dma_boundary =
2742                         phba->sli4_hba.pc_sli4_params.sge_supp_len-1;
2743                 shost->sg_tablesize = phba->cfg_sg_seg_cnt;
2744         }
2745
2746         /*
2747          * Set initial can_queue value since 0 is no longer supported and
2748          * scsi_add_host will fail. This will be adjusted later based on the
2749          * max xri value determined in hba setup.
2750          */
2751         shost->can_queue = phba->cfg_hba_queue_depth - 10;
2752         if (dev != &phba->pcidev->dev) {
2753                 shost->transportt = lpfc_vport_transport_template;
2754                 vport->port_type = LPFC_NPIV_PORT;
2755         } else {
2756                 shost->transportt = lpfc_transport_template;
2757                 vport->port_type = LPFC_PHYSICAL_PORT;
2758         }
2759
2760         /* Initialize all internally managed lists. */
2761         INIT_LIST_HEAD(&vport->fc_nodes);
2762         INIT_LIST_HEAD(&vport->rcv_buffer_list);
2763         spin_lock_init(&vport->work_port_lock);
2764
2765         init_timer(&vport->fc_disctmo);
2766         vport->fc_disctmo.function = lpfc_disc_timeout;
2767         vport->fc_disctmo.data = (unsigned long)vport;
2768
2769         init_timer(&vport->fc_fdmitmo);
2770         vport->fc_fdmitmo.function = lpfc_fdmi_tmo;
2771         vport->fc_fdmitmo.data = (unsigned long)vport;
2772
2773         init_timer(&vport->els_tmofunc);
2774         vport->els_tmofunc.function = lpfc_els_timeout;
2775         vport->els_tmofunc.data = (unsigned long)vport;
2776
2777         init_timer(&vport->delayed_disc_tmo);
2778         vport->delayed_disc_tmo.function = lpfc_delayed_disc_tmo;
2779         vport->delayed_disc_tmo.data = (unsigned long)vport;
2780
2781         error = scsi_add_host_with_dma(shost, dev, &phba->pcidev->dev);
2782         if (error)
2783                 goto out_put_shost;
2784
2785         spin_lock_irq(&phba->hbalock);
2786         list_add_tail(&vport->listentry, &phba->port_list);
2787         spin_unlock_irq(&phba->hbalock);
2788         return vport;
2789
2790 out_put_shost:
2791         scsi_host_put(shost);
2792 out:
2793         return NULL;
2794 }
2795
2796 /**
2797  * destroy_port -  destroy an FC port
2798  * @vport: pointer to an lpfc virtual N_Port data structure.
2799  *
2800  * This routine destroys a FC port from the upper layer protocol. All the
2801  * resources associated with the port are released.
2802  **/
2803 void
2804 destroy_port(struct lpfc_vport *vport)
2805 {
2806         struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
2807         struct lpfc_hba  *phba = vport->phba;
2808
2809         lpfc_debugfs_terminate(vport);
2810         fc_remove_host(shost);
2811         scsi_remove_host(shost);
2812
2813         spin_lock_irq(&phba->hbalock);
2814         list_del_init(&vport->listentry);
2815         spin_unlock_irq(&phba->hbalock);
2816
2817         lpfc_cleanup(vport);
2818         return;
2819 }
2820
2821 /**
2822  * lpfc_get_instance - Get a unique integer ID
2823  *
2824  * This routine allocates a unique integer ID from lpfc_hba_index pool. It
2825  * uses the kernel idr facility to perform the task.
2826  *
2827  * Return codes:
2828  *   instance - a unique integer ID allocated as the new instance.
2829  *   -1 - lpfc get instance failed.
2830  **/
2831 int
2832 lpfc_get_instance(void)
2833 {
2834         int instance = 0;
2835
2836         /* Assign an unused number */
2837         if (!idr_pre_get(&lpfc_hba_index, GFP_KERNEL))
2838                 return -1;
2839         if (idr_get_new(&lpfc_hba_index, NULL, &instance))
2840                 return -1;
2841         return instance;
2842 }
2843
2844 /**
2845  * lpfc_scan_finished - method for SCSI layer to detect whether scan is done
2846  * @shost: pointer to SCSI host data structure.
2847  * @time: elapsed time of the scan in jiffies.
2848  *
2849  * This routine is called by the SCSI layer with a SCSI host to determine
2850  * whether the scan host is finished.
2851  *
2852  * Note: there is no scan_start function as adapter initialization will have
2853  * asynchronously kicked off the link initialization.
2854  *
2855  * Return codes
2856  *   0 - SCSI host scan is not over yet.
2857  *   1 - SCSI host scan is over.
2858  **/
2859 int lpfc_scan_finished(struct Scsi_Host *shost, unsigned long time)
2860 {
2861         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2862         struct lpfc_hba   *phba = vport->phba;
2863         int stat = 0;
2864
2865         spin_lock_irq(shost->host_lock);
2866
2867         if (vport->load_flag & FC_UNLOADING) {
2868                 stat = 1;
2869                 goto finished;
2870         }
2871         if (time >= 30 * HZ) {
2872                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2873                                 "0461 Scanning longer than 30 "
2874                                 "seconds.  Continuing initialization\n");
2875                 stat = 1;
2876                 goto finished;
2877         }
2878         if (time >= 15 * HZ && phba->link_state <= LPFC_LINK_DOWN) {
2879                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
2880                                 "0465 Link down longer than 15 "
2881                                 "seconds.  Continuing initialization\n");
2882                 stat = 1;
2883                 goto finished;
2884         }
2885
2886         if (vport->port_state != LPFC_VPORT_READY)
2887                 goto finished;
2888         if (vport->num_disc_nodes || vport->fc_prli_sent)
2889                 goto finished;
2890         if (vport->fc_map_cnt == 0 && time < 2 * HZ)
2891                 goto finished;
2892         if ((phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) != 0)
2893                 goto finished;
2894
2895         stat = 1;
2896
2897 finished:
2898         spin_unlock_irq(shost->host_lock);
2899         return stat;
2900 }
2901
2902 /**
2903  * lpfc_host_attrib_init - Initialize SCSI host attributes on a FC port
2904  * @shost: pointer to SCSI host data structure.
2905  *
2906  * This routine initializes a given SCSI host attributes on a FC port. The
2907  * SCSI host can be either on top of a physical port or a virtual port.
2908  **/
2909 void lpfc_host_attrib_init(struct Scsi_Host *shost)
2910 {
2911         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
2912         struct lpfc_hba   *phba = vport->phba;
2913         /*
2914          * Set fixed host attributes.  Must done after lpfc_sli_hba_setup().
2915          */
2916
2917         fc_host_node_name(shost) = wwn_to_u64(vport->fc_nodename.u.wwn);
2918         fc_host_port_name(shost) = wwn_to_u64(vport->fc_portname.u.wwn);
2919         fc_host_supported_classes(shost) = FC_COS_CLASS3;
2920
2921         memset(fc_host_supported_fc4s(shost), 0,
2922                sizeof(fc_host_supported_fc4s(shost)));
2923         fc_host_supported_fc4s(shost)[2] = 1;
2924         fc_host_supported_fc4s(shost)[7] = 1;
2925
2926         lpfc_vport_symbolic_node_name(vport, fc_host_symbolic_name(shost),
2927                                  sizeof fc_host_symbolic_name(shost));
2928
2929         fc_host_supported_speeds(shost) = 0;
2930         if (phba->lmt & LMT_10Gb)
2931                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_10GBIT;
2932         if (phba->lmt & LMT_8Gb)
2933                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_8GBIT;
2934         if (phba->lmt & LMT_4Gb)
2935                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_4GBIT;
2936         if (phba->lmt & LMT_2Gb)
2937                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_2GBIT;
2938         if (phba->lmt & LMT_1Gb)
2939                 fc_host_supported_speeds(shost) |= FC_PORTSPEED_1GBIT;
2940
2941         fc_host_maxframe_size(shost) =
2942                 (((uint32_t) vport->fc_sparam.cmn.bbRcvSizeMsb & 0x0F) << 8) |
2943                 (uint32_t) vport->fc_sparam.cmn.bbRcvSizeLsb;
2944
2945         fc_host_dev_loss_tmo(shost) = vport->cfg_devloss_tmo;
2946
2947         /* This value is also unchanging */
2948         memset(fc_host_active_fc4s(shost), 0,
2949                sizeof(fc_host_active_fc4s(shost)));
2950         fc_host_active_fc4s(shost)[2] = 1;
2951         fc_host_active_fc4s(shost)[7] = 1;
2952
2953         fc_host_max_npiv_vports(shost) = phba->max_vpi;
2954         spin_lock_irq(shost->host_lock);
2955         vport->load_flag &= ~FC_LOADING;
2956         spin_unlock_irq(shost->host_lock);
2957 }
2958
2959 /**
2960  * lpfc_stop_port_s3 - Stop SLI3 device port
2961  * @phba: pointer to lpfc hba data structure.
2962  *
2963  * This routine is invoked to stop an SLI3 device port, it stops the device
2964  * from generating interrupts and stops the device driver's timers for the
2965  * device.
2966  **/
2967 static void
2968 lpfc_stop_port_s3(struct lpfc_hba *phba)
2969 {
2970         /* Clear all interrupt enable conditions */
2971         writel(0, phba->HCregaddr);
2972         readl(phba->HCregaddr); /* flush */
2973         /* Clear all pending interrupts */
2974         writel(0xffffffff, phba->HAregaddr);
2975         readl(phba->HAregaddr); /* flush */
2976
2977         /* Reset some HBA SLI setup states */
2978         lpfc_stop_hba_timers(phba);
2979         phba->pport->work_port_events = 0;
2980 }
2981
2982 /**
2983  * lpfc_stop_port_s4 - Stop SLI4 device port
2984  * @phba: pointer to lpfc hba data structure.
2985  *
2986  * This routine is invoked to stop an SLI4 device port, it stops the device
2987  * from generating interrupts and stops the device driver's timers for the
2988  * device.
2989  **/
2990 static void
2991 lpfc_stop_port_s4(struct lpfc_hba *phba)
2992 {
2993         /* Reset some HBA SLI4 setup states */
2994         lpfc_stop_hba_timers(phba);
2995         phba->pport->work_port_events = 0;
2996         phba->sli4_hba.intr_enable = 0;
2997 }
2998
2999 /**
3000  * lpfc_stop_port - Wrapper function for stopping hba port
3001  * @phba: Pointer to HBA context object.
3002  *
3003  * This routine wraps the actual SLI3 or SLI4 hba stop port routine from
3004  * the API jump table function pointer from the lpfc_hba struct.
3005  **/
3006 void
3007 lpfc_stop_port(struct lpfc_hba *phba)
3008 {
3009         phba->lpfc_stop_port(phba);
3010 }
3011
3012 /**
3013  * lpfc_fcf_redisc_wait_start_timer - Start fcf rediscover wait timer
3014  * @phba: Pointer to hba for which this call is being executed.
3015  *
3016  * This routine starts the timer waiting for the FCF rediscovery to complete.
3017  **/
3018 void
3019 lpfc_fcf_redisc_wait_start_timer(struct lpfc_hba *phba)
3020 {
3021         unsigned long fcf_redisc_wait_tmo =
3022                 (jiffies + msecs_to_jiffies(LPFC_FCF_REDISCOVER_WAIT_TMO));
3023         /* Start fcf rediscovery wait period timer */
3024         mod_timer(&phba->fcf.redisc_wait, fcf_redisc_wait_tmo);
3025         spin_lock_irq(&phba->hbalock);
3026         /* Allow action to new fcf asynchronous event */
3027         phba->fcf.fcf_flag &= ~(FCF_AVAILABLE | FCF_SCAN_DONE);
3028         /* Mark the FCF rediscovery pending state */
3029         phba->fcf.fcf_flag |= FCF_REDISC_PEND;
3030         spin_unlock_irq(&phba->hbalock);
3031 }
3032
3033 /**
3034  * lpfc_sli4_fcf_redisc_wait_tmo - FCF table rediscover wait timeout
3035  * @ptr: Map to lpfc_hba data structure pointer.
3036  *
3037  * This routine is invoked when waiting for FCF table rediscover has been
3038  * timed out. If new FCF record(s) has (have) been discovered during the
3039  * wait period, a new FCF event shall be added to the FCOE async event
3040  * list, and then worker thread shall be waked up for processing from the
3041  * worker thread context.
3042  **/
3043 void
3044 lpfc_sli4_fcf_redisc_wait_tmo(unsigned long ptr)
3045 {
3046         struct lpfc_hba *phba = (struct lpfc_hba *)ptr;
3047
3048         /* Don't send FCF rediscovery event if timer cancelled */
3049         spin_lock_irq(&phba->hbalock);
3050         if (!(phba->fcf.fcf_flag & FCF_REDISC_PEND)) {
3051                 spin_unlock_irq(&phba->hbalock);
3052                 return;
3053         }
3054         /* Clear FCF rediscovery timer pending flag */
3055         phba->fcf.fcf_flag &= ~FCF_REDISC_PEND;
3056         /* FCF rediscovery event to worker thread */
3057         phba->fcf.fcf_flag |= FCF_REDISC_EVT;
3058         spin_unlock_irq(&phba->hbalock);
3059         lpfc_printf_log(phba, KERN_INFO, LOG_FIP,
3060                         "2776 FCF rediscover quiescent timer expired\n");
3061         /* wake up worker thread */
3062         lpfc_worker_wake_up(phba);
3063 }
3064
3065 /**
3066  * lpfc_sli4_parse_latt_fault - Parse sli4 link-attention link fault code
3067  * @phba: pointer to lpfc hba data structure.
3068  * @acqe_link: pointer to the async link completion queue entry.
3069  *
3070  * This routine is to parse the SLI4 link-attention link fault code and
3071  * translate it into the base driver's read link attention mailbox command
3072  * status.
3073  *
3074  * Return: Link-attention status in terms of base driver's coding.
3075  **/
3076 static uint16_t
3077 lpfc_sli4_parse_latt_fault(struct lpfc_hba *phba,
3078                            struct lpfc_acqe_link *acqe_link)
3079 {
3080         uint16_t latt_fault;
3081
3082         switch (bf_get(lpfc_acqe_link_fault, acqe_link)) {
3083         case LPFC_ASYNC_LINK_FAULT_NONE:
3084         case LPFC_ASYNC_LINK_FAULT_LOCAL:
3085         case LPFC_ASYNC_LINK_FAULT_REMOTE:
3086                 latt_fault = 0;
3087                 break;
3088         default:
3089                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3090                                 "0398 Invalid link fault code: x%x\n",
3091                                 bf_get(lpfc_acqe_link_fault, acqe_link));
3092                 latt_fault = MBXERR_ERROR;
3093                 break;
3094         }
3095         return latt_fault;
3096 }
3097
3098 /**
3099  * lpfc_sli4_parse_latt_type - Parse sli4 link attention type
3100  * @phba: pointer to lpfc hba data structure.
3101  * @acqe_link: pointer to the async link completion queue entry.
3102  *
3103  * This routine is to parse the SLI4 link attention type and translate it
3104  * into the base driver's link attention type coding.
3105  *
3106  * Return: Link attention type in terms of base driver's coding.
3107  **/
3108 static uint8_t
3109 lpfc_sli4_parse_latt_type(struct lpfc_hba *phba,
3110                           struct lpfc_acqe_link *acqe_link)
3111 {
3112         uint8_t att_type;
3113
3114         switch (bf_get(lpfc_acqe_link_status, acqe_link)) {
3115         case LPFC_ASYNC_LINK_STATUS_DOWN:
3116         case LPFC_ASYNC_LINK_STATUS_LOGICAL_DOWN:
3117                 att_type = LPFC_ATT_LINK_DOWN;
3118                 break;
3119         case LPFC_ASYNC_LINK_STATUS_UP:
3120                 /* Ignore physical link up events - wait for logical link up */
3121                 att_type = LPFC_ATT_RESERVED;
3122                 break;
3123         case LPFC_ASYNC_LINK_STATUS_LOGICAL_UP:
3124                 att_type = LPFC_ATT_LINK_UP;
3125                 break;
3126         default:
3127                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3128                                 "0399 Invalid link attention type: x%x\n",
3129                                 bf_get(lpfc_acqe_link_status, acqe_link));
3130                 att_type = LPFC_ATT_RESERVED;
3131                 break;
3132         }
3133         return att_type;
3134 }
3135
3136 /**
3137  * lpfc_sli4_parse_latt_link_speed - Parse sli4 link-attention link speed
3138  * @phba: pointer to lpfc hba data structure.
3139  * @acqe_link: pointer to the async link completion queue entry.
3140  *
3141  * This routine is to parse the SLI4 link-attention link speed and translate
3142  * it into the base driver's link-attention link speed coding.
3143  *
3144  * Return: Link-attention link speed in terms of base driver's coding.
3145  **/
3146 static uint8_t
3147 lpfc_sli4_parse_latt_link_speed(struct lpfc_hba *phba,
3148                                 struct lpfc_acqe_link *acqe_link)
3149 {
3150         uint8_t link_speed;
3151
3152         switch (bf_get(lpfc_acqe_link_speed, acqe_link)) {
3153         case LPFC_ASYNC_LINK_SPEED_ZERO:
3154         case LPFC_ASYNC_LINK_SPEED_10MBPS:
3155         case LPFC_ASYNC_LINK_SPEED_100MBPS:
3156                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3157                 break;
3158         case LPFC_ASYNC_LINK_SPEED_1GBPS:
3159                 link_speed = LPFC_LINK_SPEED_1GHZ;
3160                 break;
3161         case LPFC_ASYNC_LINK_SPEED_10GBPS:
3162                 link_speed = LPFC_LINK_SPEED_10GHZ;
3163                 break;
3164         default:
3165                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3166                                 "0483 Invalid link-attention link speed: x%x\n",
3167                                 bf_get(lpfc_acqe_link_speed, acqe_link));
3168                 link_speed = LPFC_LINK_SPEED_UNKNOWN;
3169                 break;
3170         }
3171         return link_speed;
3172 }
3173
3174 /**
3175  * lpfc_sli4_async_link_evt - Process the asynchronous FCoE link event
3176  * @phba: pointer to lpfc hba data structure.
3177  * @acqe_link: pointer to the async link completion queue entry.
3178  *
3179  * This routine is to handle the SLI4 asynchronous FCoE link event.
3180  **/
3181 static void
3182 lpfc_sli4_async_link_evt(struct lpfc_hba *phba,
3183                          struct lpfc_acqe_link *acqe_link)
3184 {
3185         struct lpfc_dmabuf *mp;
3186         LPFC_MBOXQ_t *pmb;
3187         MAILBOX_t *mb;
3188         struct lpfc_mbx_read_top *la;
3189         uint8_t att_type;
3190         int rc;
3191
3192         att_type = lpfc_sli4_parse_latt_type(phba, acqe_link);
3193         if (att_type != LPFC_ATT_LINK_DOWN && att_type != LPFC_ATT_LINK_UP)
3194                 return;
3195         phba->fcoe_eventtag = acqe_link->event_tag;
3196         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3197         if (!pmb) {
3198                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3199                                 "0395 The mboxq allocation failed\n");
3200                 return;
3201         }
3202         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3203         if (!mp) {
3204                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3205                                 "0396 The lpfc_dmabuf allocation failed\n");
3206                 goto out_free_pmb;
3207         }
3208         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3209         if (!mp->virt) {
3210                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3211                                 "0397 The mbuf allocation failed\n");
3212                 goto out_free_dmabuf;
3213         }
3214
3215         /* Cleanup any outstanding ELS commands */
3216         lpfc_els_flush_all_cmd(phba);
3217
3218         /* Block ELS IOCBs until we have done process link event */
3219         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3220
3221         /* Update link event statistics */
3222         phba->sli.slistat.link_event++;
3223
3224         /* Create lpfc_handle_latt mailbox command from link ACQE */
3225         lpfc_read_topology(phba, pmb, mp);
3226         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3227         pmb->vport = phba->pport;
3228
3229         /* Keep the link status for extra SLI4 state machine reference */
3230         phba->sli4_hba.link_state.speed =
3231                                 bf_get(lpfc_acqe_link_speed, acqe_link);
3232         phba->sli4_hba.link_state.duplex =
3233                                 bf_get(lpfc_acqe_link_duplex, acqe_link);
3234         phba->sli4_hba.link_state.status =
3235                                 bf_get(lpfc_acqe_link_status, acqe_link);
3236         phba->sli4_hba.link_state.type =
3237                                 bf_get(lpfc_acqe_link_type, acqe_link);
3238         phba->sli4_hba.link_state.number =
3239                                 bf_get(lpfc_acqe_link_number, acqe_link);
3240         phba->sli4_hba.link_state.fault =
3241                                 bf_get(lpfc_acqe_link_fault, acqe_link);
3242         phba->sli4_hba.link_state.logical_speed =
3243                         bf_get(lpfc_acqe_logical_link_speed, acqe_link);
3244         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3245                         "2900 Async FC/FCoE Link event - Speed:%dGBit "
3246                         "duplex:x%x LA Type:x%x Port Type:%d Port Number:%d "
3247                         "Logical speed:%dMbps Fault:%d\n",
3248                         phba->sli4_hba.link_state.speed,
3249                         phba->sli4_hba.link_state.topology,
3250                         phba->sli4_hba.link_state.status,
3251                         phba->sli4_hba.link_state.type,
3252                         phba->sli4_hba.link_state.number,
3253                         phba->sli4_hba.link_state.logical_speed * 10,
3254                         phba->sli4_hba.link_state.fault);
3255         /*
3256          * For FC Mode: issue the READ_TOPOLOGY mailbox command to fetch
3257          * topology info. Note: Optional for non FC-AL ports.
3258          */
3259         if (!(phba->hba_flag & HBA_FCOE_MODE)) {
3260                 rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3261                 if (rc == MBX_NOT_FINISHED)
3262                         goto out_free_dmabuf;
3263                 return;
3264         }
3265         /*
3266          * For FCoE Mode: fill in all the topology information we need and call
3267          * the READ_TOPOLOGY completion routine to continue without actually
3268          * sending the READ_TOPOLOGY mailbox command to the port.
3269          */
3270         /* Parse and translate status field */
3271         mb = &pmb->u.mb;
3272         mb->mbxStatus = lpfc_sli4_parse_latt_fault(phba, acqe_link);
3273
3274         /* Parse and translate link attention fields */
3275         la = (struct lpfc_mbx_read_top *) &pmb->u.mb.un.varReadTop;
3276         la->eventTag = acqe_link->event_tag;
3277         bf_set(lpfc_mbx_read_top_att_type, la, att_type);
3278         bf_set(lpfc_mbx_read_top_link_spd, la,
3279                lpfc_sli4_parse_latt_link_speed(phba, acqe_link));
3280
3281         /* Fake the the following irrelvant fields */
3282         bf_set(lpfc_mbx_read_top_topology, la, LPFC_TOPOLOGY_PT_PT);
3283         bf_set(lpfc_mbx_read_top_alpa_granted, la, 0);
3284         bf_set(lpfc_mbx_read_top_il, la, 0);
3285         bf_set(lpfc_mbx_read_top_pb, la, 0);
3286         bf_set(lpfc_mbx_read_top_fa, la, 0);
3287         bf_set(lpfc_mbx_read_top_mm, la, 0);
3288
3289         /* Invoke the lpfc_handle_latt mailbox command callback function */
3290         lpfc_mbx_cmpl_read_topology(phba, pmb);
3291
3292         return;
3293
3294 out_free_dmabuf:
3295         kfree(mp);
3296 out_free_pmb:
3297         mempool_free(pmb, phba->mbox_mem_pool);
3298 }
3299
3300 /**
3301  * lpfc_sli4_async_fc_evt - Process the asynchronous FC link event
3302  * @phba: pointer to lpfc hba data structure.
3303  * @acqe_fc: pointer to the async fc completion queue entry.
3304  *
3305  * This routine is to handle the SLI4 asynchronous FC event. It will simply log
3306  * that the event was received and then issue a read_topology mailbox command so
3307  * that the rest of the driver will treat it the same as SLI3.
3308  **/
3309 static void
3310 lpfc_sli4_async_fc_evt(struct lpfc_hba *phba, struct lpfc_acqe_fc_la *acqe_fc)
3311 {
3312         struct lpfc_dmabuf *mp;
3313         LPFC_MBOXQ_t *pmb;
3314         int rc;
3315
3316         if (bf_get(lpfc_trailer_type, acqe_fc) !=
3317             LPFC_FC_LA_EVENT_TYPE_FC_LINK) {
3318                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3319                                 "2895 Non FC link Event detected.(%d)\n",
3320                                 bf_get(lpfc_trailer_type, acqe_fc));
3321                 return;
3322         }
3323         /* Keep the link status for extra SLI4 state machine reference */
3324         phba->sli4_hba.link_state.speed =
3325                                 bf_get(lpfc_acqe_fc_la_speed, acqe_fc);
3326         phba->sli4_hba.link_state.duplex = LPFC_ASYNC_LINK_DUPLEX_FULL;
3327         phba->sli4_hba.link_state.topology =
3328                                 bf_get(lpfc_acqe_fc_la_topology, acqe_fc);
3329         phba->sli4_hba.link_state.status =
3330                                 bf_get(lpfc_acqe_fc_la_att_type, acqe_fc);
3331         phba->sli4_hba.link_state.type =
3332                                 bf_get(lpfc_acqe_fc_la_port_type, acqe_fc);
3333         phba->sli4_hba.link_state.number =
3334                                 bf_get(lpfc_acqe_fc_la_port_number, acqe_fc);
3335         phba->sli4_hba.link_state.fault =
3336                                 bf_get(lpfc_acqe_link_fault, acqe_fc);
3337         phba->sli4_hba.link_state.logical_speed =
3338                                 bf_get(lpfc_acqe_fc_la_llink_spd, acqe_fc);
3339         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3340                         "2896 Async FC event - Speed:%dGBaud Topology:x%x "
3341                         "LA Type:x%x Port Type:%d Port Number:%d Logical speed:"
3342                         "%dMbps Fault:%d\n",
3343                         phba->sli4_hba.link_state.speed,
3344                         phba->sli4_hba.link_state.topology,
3345                         phba->sli4_hba.link_state.status,
3346                         phba->sli4_hba.link_state.type,
3347                         phba->sli4_hba.link_state.number,
3348                         phba->sli4_hba.link_state.logical_speed * 10,
3349                         phba->sli4_hba.link_state.fault);
3350         pmb = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
3351         if (!pmb) {
3352                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3353                                 "2897 The mboxq allocation failed\n");
3354                 return;
3355         }
3356         mp = kmalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
3357         if (!mp) {
3358                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3359                                 "2898 The lpfc_dmabuf allocation failed\n");
3360                 goto out_free_pmb;
3361         }
3362         mp->virt = lpfc_mbuf_alloc(phba, 0, &mp->phys);
3363         if (!mp->virt) {
3364                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3365                                 "2899 The mbuf allocation failed\n");
3366                 goto out_free_dmabuf;
3367         }
3368
3369         /* Cleanup any outstanding ELS commands */
3370         lpfc_els_flush_all_cmd(phba);
3371
3372         /* Block ELS IOCBs until we have done process link event */
3373         phba->sli.ring[LPFC_ELS_RING].flag |= LPFC_STOP_IOCB_EVENT;
3374
3375         /* Update link event statistics */
3376         phba->sli.slistat.link_event++;
3377
3378         /* Create lpfc_handle_latt mailbox command from link ACQE */
3379         lpfc_read_topology(phba, pmb, mp);
3380         pmb->mbox_cmpl = lpfc_mbx_cmpl_read_topology;
3381         pmb->vport = phba->pport;
3382
3383         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
3384         if (rc == MBX_NOT_FINISHED)
3385                 goto out_free_dmabuf;
3386         return;
3387
3388 out_free_dmabuf:
3389         kfree(mp);
3390 out_free_pmb:
3391         mempool_free(pmb, phba->mbox_mem_pool);
3392 }
3393
3394 /**
3395  * lpfc_sli4_async_sli_evt - Process the asynchronous SLI link event
3396  * @phba: pointer to lpfc hba data structure.
3397  * @acqe_fc: pointer to the async SLI completion queue entry.
3398  *
3399  * This routine is to handle the SLI4 asynchronous SLI events.
3400  **/
3401 static void
3402 lpfc_sli4_async_sli_evt(struct lpfc_hba *phba, struct lpfc_acqe_sli *acqe_sli)
3403 {
3404         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3405                         "2901 Async SLI event - Event Data1:x%08x Event Data2:"
3406                         "x%08x SLI Event Type:%d",
3407                         acqe_sli->event_data1, acqe_sli->event_data2,
3408                         bf_get(lpfc_trailer_type, acqe_sli));
3409         return;
3410 }
3411
3412 /**
3413  * lpfc_sli4_perform_vport_cvl - Perform clear virtual link on a vport
3414  * @vport: pointer to vport data structure.
3415  *
3416  * This routine is to perform Clear Virtual Link (CVL) on a vport in
3417  * response to a CVL event.
3418  *
3419  * Return the pointer to the ndlp with the vport if successful, otherwise
3420  * return NULL.
3421  **/
3422 static struct lpfc_nodelist *
3423 lpfc_sli4_perform_vport_cvl(struct lpfc_vport *vport)
3424 {
3425         struct lpfc_nodelist *ndlp;
3426         struct Scsi_Host *shost;
3427         struct lpfc_hba *phba;
3428
3429         if (!vport)
3430                 return NULL;
3431         phba = vport->phba;
3432         if (!phba)
3433                 return NULL;
3434         ndlp = lpfc_findnode_did(vport, Fabric_DID);
3435         if (!ndlp) {
3436                 /* Cannot find existing Fabric ndlp, so allocate a new one */
3437                 ndlp = mempool_alloc(phba->nlp_mem_pool, GFP_KERNEL);
3438                 if (!ndlp)
3439                         return 0;
3440                 lpfc_nlp_init(vport, ndlp, Fabric_DID);
3441                 /* Set the node type */
3442                 ndlp->nlp_type |= NLP_FABRIC;
3443                 /* Put ndlp onto node list */
3444                 lpfc_enqueue_node(vport, ndlp);
3445         } else if (!NLP_CHK_NODE_ACT(ndlp)) {
3446                 /* re-setup ndlp without removing from node list */
3447                 ndlp = lpfc_enable_node(vport, ndlp, NLP_STE_UNUSED_NODE);
3448                 if (!ndlp)
3449                         return 0;
3450         }
3451         if ((phba->pport->port_state < LPFC_FLOGI) &&
3452                 (phba->pport->port_state != LPFC_VPORT_FAILED))
3453                 return NULL;
3454         /* If virtual link is not yet instantiated ignore CVL */
3455         if ((vport != phba->pport) && (vport->port_state < LPFC_FDISC)
3456                 && (vport->port_state != LPFC_VPORT_FAILED))
3457                 return NULL;
3458         shost = lpfc_shost_from_vport(vport);
3459         if (!shost)
3460                 return NULL;
3461         lpfc_linkdown_port(vport);
3462         lpfc_cleanup_pending_mbox(vport);
3463         spin_lock_irq(shost->host_lock);
3464         vport->fc_flag |= FC_VPORT_CVL_RCVD;
3465         spin_unlock_irq(shost->host_lock);
3466
3467         return ndlp;
3468 }
3469
3470 /**
3471  * lpfc_sli4_perform_all_vport_cvl - Perform clear virtual link on all vports
3472  * @vport: pointer to lpfc hba data structure.
3473  *
3474  * This routine is to perform Clear Virtual Link (CVL) on all vports in
3475  * response to a FCF dead event.
3476  **/
3477 static void
3478 lpfc_sli4_perform_all_vport_cvl(struct lpfc_hba *phba)
3479 {
3480         struct lpfc_vport **vports;
3481         int i;
3482
3483         vports = lpfc_create_vport_work_array(phba);
3484         if (vports)
3485                 for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++)
3486                         lpfc_sli4_perform_vport_cvl(vports[i]);
3487         lpfc_destroy_vport_work_array(phba, vports);
3488 }
3489
3490 /**
3491  * lpfc_sli4_async_fip_evt - Process the asynchronous FCoE FIP event
3492  * @phba: pointer to lpfc hba data structure.
3493  * @acqe_link: pointer to the async fcoe completion queue entry.
3494  *
3495  * This routine is to handle the SLI4 asynchronous fcoe event.
3496  **/
3497 static void
3498 lpfc_sli4_async_fip_evt(struct lpfc_hba *phba,
3499                         struct lpfc_acqe_fip *acqe_fip)
3500 {
3501         uint8_t event_type = bf_get(lpfc_trailer_type, acqe_fip);
3502         int rc;
3503         struct lpfc_vport *vport;
3504         struct lpfc_nodelist *ndlp;
3505         struct Scsi_Host  *shost;
3506         int active_vlink_present;
3507         struct lpfc_vport **vports;
3508         int i;
3509
3510         phba->fc_eventTag = acqe_fip->event_tag;
3511         phba->fcoe_eventtag = acqe_fip->event_tag;
3512         switch (event_type) {
3513         case LPFC_FIP_EVENT_TYPE_NEW_FCF:
3514         case LPFC_FIP_EVENT_TYPE_FCF_PARAM_MOD:
3515                 if (event_type == LPFC_FIP_EVENT_TYPE_NEW_FCF)
3516                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3517                                         LOG_DISCOVERY,
3518                                         "2546 New FCF event, evt_tag:x%x, "
3519                                         "index:x%x\n",
3520                                         acqe_fip->event_tag,
3521                                         acqe_fip->index);
3522                 else
3523                         lpfc_printf_log(phba, KERN_WARNING, LOG_FIP |
3524                                         LOG_DISCOVERY,
3525                                         "2788 FCF param modified event, "
3526                                         "evt_tag:x%x, index:x%x\n",
3527                                         acqe_fip->event_tag,
3528                                         acqe_fip->index);
3529                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3530                         /*
3531                          * During period of FCF discovery, read the FCF
3532                          * table record indexed by the event to update
3533                          * FCF roundrobin failover eligible FCF bmask.
3534                          */
3535                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3536                                         LOG_DISCOVERY,
3537                                         "2779 Read FCF (x%x) for updating "
3538                                         "roundrobin FCF failover bmask\n",
3539                                         acqe_fip->index);
3540                         rc = lpfc_sli4_read_fcf_rec(phba, acqe_fip->index);
3541                 }
3542
3543                 /* If the FCF discovery is in progress, do nothing. */
3544                 spin_lock_irq(&phba->hbalock);
3545                 if (phba->hba_flag & FCF_TS_INPROG) {
3546                         spin_unlock_irq(&phba->hbalock);
3547                         break;
3548                 }
3549                 /* If fast FCF failover rescan event is pending, do nothing */
3550                 if (phba->fcf.fcf_flag & FCF_REDISC_EVT) {
3551                         spin_unlock_irq(&phba->hbalock);
3552                         break;
3553                 }
3554
3555                 /* If the FCF has been in discovered state, do nothing. */
3556                 if (phba->fcf.fcf_flag & FCF_SCAN_DONE) {
3557                         spin_unlock_irq(&phba->hbalock);
3558                         break;
3559                 }
3560                 spin_unlock_irq(&phba->hbalock);
3561
3562                 /* Otherwise, scan the entire FCF table and re-discover SAN */
3563                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3564                                 "2770 Start FCF table scan per async FCF "
3565                                 "event, evt_tag:x%x, index:x%x\n",
3566                                 acqe_fip->event_tag, acqe_fip->index);
3567                 rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba,
3568                                                      LPFC_FCOE_FCF_GET_FIRST);
3569                 if (rc)
3570                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3571                                         "2547 Issue FCF scan read FCF mailbox "
3572                                         "command failed (x%x)\n", rc);
3573                 break;
3574
3575         case LPFC_FIP_EVENT_TYPE_FCF_TABLE_FULL:
3576                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3577                         "2548 FCF Table full count 0x%x tag 0x%x\n",
3578                         bf_get(lpfc_acqe_fip_fcf_count, acqe_fip),
3579                         acqe_fip->event_tag);
3580                 break;
3581
3582         case LPFC_FIP_EVENT_TYPE_FCF_DEAD:
3583                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3584                         "2549 FCF (x%x) disconnected from network, "
3585                         "tag:x%x\n", acqe_fip->index, acqe_fip->event_tag);
3586                 /*
3587                  * If we are in the middle of FCF failover process, clear
3588                  * the corresponding FCF bit in the roundrobin bitmap.
3589                  */
3590                 spin_lock_irq(&phba->hbalock);
3591                 if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3592                         spin_unlock_irq(&phba->hbalock);
3593                         /* Update FLOGI FCF failover eligible FCF bmask */
3594                         lpfc_sli4_fcf_rr_index_clear(phba, acqe_fip->index);
3595                         break;
3596                 }
3597                 spin_unlock_irq(&phba->hbalock);
3598
3599                 /* If the event is not for currently used fcf do nothing */
3600                 if (phba->fcf.current_rec.fcf_indx != acqe_fip->index)
3601                         break;
3602
3603                 /*
3604                  * Otherwise, request the port to rediscover the entire FCF
3605                  * table for a fast recovery from case that the current FCF
3606                  * is no longer valid as we are not in the middle of FCF
3607                  * failover process already.
3608                  */
3609                 spin_lock_irq(&phba->hbalock);
3610                 /* Mark the fast failover process in progress */
3611                 phba->fcf.fcf_flag |= FCF_DEAD_DISC;
3612                 spin_unlock_irq(&phba->hbalock);
3613
3614                 lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3615                                 "2771 Start FCF fast failover process due to "
3616                                 "FCF DEAD event: evt_tag:x%x, fcf_index:x%x "
3617                                 "\n", acqe_fip->event_tag, acqe_fip->index);
3618                 rc = lpfc_sli4_redisc_fcf_table(phba);
3619                 if (rc) {
3620                         lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3621                                         LOG_DISCOVERY,
3622                                         "2772 Issue FCF rediscover mabilbox "
3623                                         "command failed, fail through to FCF "
3624                                         "dead event\n");
3625                         spin_lock_irq(&phba->hbalock);
3626                         phba->fcf.fcf_flag &= ~FCF_DEAD_DISC;
3627                         spin_unlock_irq(&phba->hbalock);
3628                         /*
3629                          * Last resort will fail over by treating this
3630                          * as a link down to FCF registration.
3631                          */
3632                         lpfc_sli4_fcf_dead_failthrough(phba);
3633                 } else {
3634                         /* Reset FCF roundrobin bmask for new discovery */
3635                         memset(phba->fcf.fcf_rr_bmask, 0,
3636                                sizeof(*phba->fcf.fcf_rr_bmask));
3637                         /*
3638                          * Handling fast FCF failover to a DEAD FCF event is
3639                          * considered equalivant to receiving CVL to all vports.
3640                          */
3641                         lpfc_sli4_perform_all_vport_cvl(phba);
3642                 }
3643                 break;
3644         case LPFC_FIP_EVENT_TYPE_CVL:
3645                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3646                         "2718 Clear Virtual Link Received for VPI 0x%x"
3647                         " tag 0x%x\n", acqe_fip->index, acqe_fip->event_tag);
3648
3649                 vport = lpfc_find_vport_by_vpid(phba,
3650                                 acqe_fip->index - phba->vpi_base);
3651                 ndlp = lpfc_sli4_perform_vport_cvl(vport);
3652                 if (!ndlp)
3653                         break;
3654                 active_vlink_present = 0;
3655
3656                 vports = lpfc_create_vport_work_array(phba);
3657                 if (vports) {
3658                         for (i = 0; i <= phba->max_vports && vports[i] != NULL;
3659                                         i++) {
3660                                 if ((!(vports[i]->fc_flag &
3661                                         FC_VPORT_CVL_RCVD)) &&
3662                                         (vports[i]->port_state > LPFC_FDISC)) {
3663                                         active_vlink_present = 1;
3664                                         break;
3665                                 }
3666                         }
3667                         lpfc_destroy_vport_work_array(phba, vports);
3668                 }
3669
3670                 if (active_vlink_present) {
3671                         /*
3672                          * If there are other active VLinks present,
3673                          * re-instantiate the Vlink using FDISC.
3674                          */
3675                         mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
3676                         shost = lpfc_shost_from_vport(vport);
3677                         spin_lock_irq(shost->host_lock);
3678                         ndlp->nlp_flag |= NLP_DELAY_TMO;
3679                         spin_unlock_irq(shost->host_lock);
3680                         ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
3681                         vport->port_state = LPFC_FDISC;
3682                 } else {
3683                         /*
3684                          * Otherwise, we request port to rediscover
3685                          * the entire FCF table for a fast recovery
3686                          * from possible case that the current FCF
3687                          * is no longer valid if we are not already
3688                          * in the FCF failover process.
3689                          */
3690                         spin_lock_irq(&phba->hbalock);
3691                         if (phba->fcf.fcf_flag & FCF_DISCOVERY) {
3692                                 spin_unlock_irq(&phba->hbalock);
3693                                 break;
3694                         }
3695                         /* Mark the fast failover process in progress */
3696                         phba->fcf.fcf_flag |= FCF_ACVL_DISC;
3697                         spin_unlock_irq(&phba->hbalock);
3698                         lpfc_printf_log(phba, KERN_INFO, LOG_FIP |
3699                                         LOG_DISCOVERY,
3700                                         "2773 Start FCF failover per CVL, "
3701                                         "evt_tag:x%x\n", acqe_fip->event_tag);
3702                         rc = lpfc_sli4_redisc_fcf_table(phba);
3703                         if (rc) {
3704                                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP |
3705                                                 LOG_DISCOVERY,
3706                                                 "2774 Issue FCF rediscover "
3707                                                 "mabilbox command failed, "
3708                                                 "through to CVL event\n");
3709                                 spin_lock_irq(&phba->hbalock);
3710                                 phba->fcf.fcf_flag &= ~FCF_ACVL_DISC;
3711                                 spin_unlock_irq(&phba->hbalock);
3712                                 /*
3713                                  * Last resort will be re-try on the
3714                                  * the current registered FCF entry.
3715                                  */
3716                                 lpfc_retry_pport_discovery(phba);
3717                         } else
3718                                 /*
3719                                  * Reset FCF roundrobin bmask for new
3720                                  * discovery.
3721                                  */
3722                                 memset(phba->fcf.fcf_rr_bmask, 0,
3723                                        sizeof(*phba->fcf.fcf_rr_bmask));
3724                 }
3725                 break;
3726         default:
3727                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3728                         "0288 Unknown FCoE event type 0x%x event tag "
3729                         "0x%x\n", event_type, acqe_fip->event_tag);
3730                 break;
3731         }
3732 }
3733
3734 /**
3735  * lpfc_sli4_async_dcbx_evt - Process the asynchronous dcbx event
3736  * @phba: pointer to lpfc hba data structure.
3737  * @acqe_link: pointer to the async dcbx completion queue entry.
3738  *
3739  * This routine is to handle the SLI4 asynchronous dcbx event.
3740  **/
3741 static void
3742 lpfc_sli4_async_dcbx_evt(struct lpfc_hba *phba,
3743                          struct lpfc_acqe_dcbx *acqe_dcbx)
3744 {
3745         phba->fc_eventTag = acqe_dcbx->event_tag;
3746         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3747                         "0290 The SLI4 DCBX asynchronous event is not "
3748                         "handled yet\n");
3749 }
3750
3751 /**
3752  * lpfc_sli4_async_grp5_evt - Process the asynchronous group5 event
3753  * @phba: pointer to lpfc hba data structure.
3754  * @acqe_link: pointer to the async grp5 completion queue entry.
3755  *
3756  * This routine is to handle the SLI4 asynchronous grp5 event. A grp5 event
3757  * is an asynchronous notified of a logical link speed change.  The Port
3758  * reports the logical link speed in units of 10Mbps.
3759  **/
3760 static void
3761 lpfc_sli4_async_grp5_evt(struct lpfc_hba *phba,
3762                          struct lpfc_acqe_grp5 *acqe_grp5)
3763 {
3764         uint16_t prev_ll_spd;
3765
3766         phba->fc_eventTag = acqe_grp5->event_tag;
3767         phba->fcoe_eventtag = acqe_grp5->event_tag;
3768         prev_ll_spd = phba->sli4_hba.link_state.logical_speed;
3769         phba->sli4_hba.link_state.logical_speed =
3770                 (bf_get(lpfc_acqe_grp5_llink_spd, acqe_grp5));
3771         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
3772                         "2789 GRP5 Async Event: Updating logical link speed "
3773                         "from %dMbps to %dMbps\n", (prev_ll_spd * 10),
3774                         (phba->sli4_hba.link_state.logical_speed*10));
3775 }
3776
3777 /**
3778  * lpfc_sli4_async_event_proc - Process all the pending asynchronous event
3779  * @phba: pointer to lpfc hba data structure.
3780  *
3781  * This routine is invoked by the worker thread to process all the pending
3782  * SLI4 asynchronous events.
3783  **/
3784 void lpfc_sli4_async_event_proc(struct lpfc_hba *phba)
3785 {
3786         struct lpfc_cq_event *cq_event;
3787
3788         /* First, declare the async event has been handled */
3789         spin_lock_irq(&phba->hbalock);
3790         phba->hba_flag &= ~ASYNC_EVENT;
3791         spin_unlock_irq(&phba->hbalock);
3792         /* Now, handle all the async events */
3793         while (!list_empty(&phba->sli4_hba.sp_asynce_work_queue)) {
3794                 /* Get the first event from the head of the event queue */
3795                 spin_lock_irq(&phba->hbalock);
3796                 list_remove_head(&phba->sli4_hba.sp_asynce_work_queue,
3797                                  cq_event, struct lpfc_cq_event, list);
3798                 spin_unlock_irq(&phba->hbalock);
3799                 /* Process the asynchronous event */
3800                 switch (bf_get(lpfc_trailer_code, &cq_event->cqe.mcqe_cmpl)) {
3801                 case LPFC_TRAILER_CODE_LINK:
3802                         lpfc_sli4_async_link_evt(phba,
3803                                                  &cq_event->cqe.acqe_link);
3804                         break;
3805                 case LPFC_TRAILER_CODE_FCOE:
3806                         lpfc_sli4_async_fip_evt(phba, &cq_event->cqe.acqe_fip);
3807                         break;
3808                 case LPFC_TRAILER_CODE_DCBX:
3809                         lpfc_sli4_async_dcbx_evt(phba,
3810                                                  &cq_event->cqe.acqe_dcbx);
3811                         break;
3812                 case LPFC_TRAILER_CODE_GRP5:
3813                         lpfc_sli4_async_grp5_evt(phba,
3814                                                  &cq_event->cqe.acqe_grp5);
3815                         break;
3816                 case LPFC_TRAILER_CODE_FC:
3817                         lpfc_sli4_async_fc_evt(phba, &cq_event->cqe.acqe_fc);
3818                         break;
3819                 case LPFC_TRAILER_CODE_SLI:
3820                         lpfc_sli4_async_sli_evt(phba, &cq_event->cqe.acqe_sli);
3821                         break;
3822                 default:
3823                         lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
3824                                         "1804 Invalid asynchrous event code: "
3825                                         "x%x\n", bf_get(lpfc_trailer_code,
3826                                         &cq_event->cqe.mcqe_cmpl));
3827                         break;
3828                 }
3829                 /* Free the completion event processed to the free pool */
3830                 lpfc_sli4_cq_event_release(phba, cq_event);
3831         }
3832 }
3833
3834 /**
3835  * lpfc_sli4_fcf_redisc_event_proc - Process fcf table rediscovery event
3836  * @phba: pointer to lpfc hba data structure.
3837  *
3838  * This routine is invoked by the worker thread to process FCF table
3839  * rediscovery pending completion event.
3840  **/
3841 void lpfc_sli4_fcf_redisc_event_proc(struct lpfc_hba *phba)
3842 {
3843         int rc;
3844
3845         spin_lock_irq(&phba->hbalock);
3846         /* Clear FCF rediscovery timeout event */
3847         phba->fcf.fcf_flag &= ~FCF_REDISC_EVT;
3848         /* Clear driver fast failover FCF record flag */
3849         phba->fcf.failover_rec.flag = 0;
3850         /* Set state for FCF fast failover */
3851         phba->fcf.fcf_flag |= FCF_REDISC_FOV;
3852         spin_unlock_irq(&phba->hbalock);
3853
3854         /* Scan FCF table from the first entry to re-discover SAN */
3855         lpfc_printf_log(phba, KERN_INFO, LOG_FIP | LOG_DISCOVERY,
3856                         "2777 Start post-quiescent FCF table scan\n");
3857         rc = lpfc_sli4_fcf_scan_read_fcf_rec(phba, LPFC_FCOE_FCF_GET_FIRST);
3858         if (rc)
3859                 lpfc_printf_log(phba, KERN_ERR, LOG_FIP | LOG_DISCOVERY,
3860                                 "2747 Issue FCF scan read FCF mailbox "
3861                                 "command failed 0x%x\n", rc);
3862 }
3863
3864 /**
3865  * lpfc_api_table_setup - Set up per hba pci-device group func api jump table
3866  * @phba: pointer to lpfc hba data structure.
3867  * @dev_grp: The HBA PCI-Device group number.
3868  *
3869  * This routine is invoked to set up the per HBA PCI-Device group function
3870  * API jump table entries.
3871  *
3872  * Return: 0 if success, otherwise -ENODEV
3873  **/
3874 int
3875 lpfc_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
3876 {
3877         int rc;
3878
3879         /* Set up lpfc PCI-device group */
3880         phba->pci_dev_grp = dev_grp;
3881
3882         /* The LPFC_PCI_DEV_OC uses SLI4 */
3883         if (dev_grp == LPFC_PCI_DEV_OC)
3884                 phba->sli_rev = LPFC_SLI_REV4;
3885
3886         /* Set up device INIT API function jump table */
3887         rc = lpfc_init_api_table_setup(phba, dev_grp);
3888         if (rc)
3889                 return -ENODEV;
3890         /* Set up SCSI API function jump table */
3891         rc = lpfc_scsi_api_table_setup(phba, dev_grp);
3892         if (rc)
3893                 return -ENODEV;
3894         /* Set up SLI API function jump table */
3895         rc = lpfc_sli_api_table_setup(phba, dev_grp);
3896         if (rc)
3897                 return -ENODEV;
3898         /* Set up MBOX API function jump table */
3899         rc = lpfc_mbox_api_table_setup(phba, dev_grp);
3900         if (rc)
3901                 return -ENODEV;
3902
3903         return 0;
3904 }
3905
3906 /**
3907  * lpfc_log_intr_mode - Log the active interrupt mode
3908  * @phba: pointer to lpfc hba data structure.
3909  * @intr_mode: active interrupt mode adopted.
3910  *
3911  * This routine it invoked to log the currently used active interrupt mode
3912  * to the device.
3913  **/
3914 static void lpfc_log_intr_mode(struct lpfc_hba *phba, uint32_t intr_mode)
3915 {
3916         switch (intr_mode) {
3917         case 0:
3918                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3919                                 "0470 Enable INTx interrupt mode.\n");
3920                 break;
3921         case 1:
3922                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3923                                 "0481 Enabled MSI interrupt mode.\n");
3924                 break;
3925         case 2:
3926                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
3927                                 "0480 Enabled MSI-X interrupt mode.\n");
3928                 break;
3929         default:
3930                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
3931                                 "0482 Illegal interrupt mode.\n");
3932                 break;
3933         }
3934         return;
3935 }
3936
3937 /**
3938  * lpfc_enable_pci_dev - Enable a generic PCI device.
3939  * @phba: pointer to lpfc hba data structure.
3940  *
3941  * This routine is invoked to enable the PCI device that is common to all
3942  * PCI devices.
3943  *
3944  * Return codes
3945  *      0 - successful
3946  *      other values - error
3947  **/
3948 static int
3949 lpfc_enable_pci_dev(struct lpfc_hba *phba)
3950 {
3951         struct pci_dev *pdev;
3952         int bars;
3953
3954         /* Obtain PCI device reference */
3955         if (!phba->pcidev)
3956                 goto out_error;
3957         else
3958                 pdev = phba->pcidev;
3959         /* Select PCI BARs */
3960         bars = pci_select_bars(pdev, IORESOURCE_MEM);
3961         /* Enable PCI device */
3962         if (pci_enable_device_mem(pdev))
3963                 goto out_error;
3964         /* Request PCI resource for the device */
3965         if (pci_request_selected_regions(pdev, bars, LPFC_DRIVER_NAME))
3966                 goto out_disable_device;
3967         /* Set up device as PCI master and save state for EEH */
3968         pci_set_master(pdev);
3969         pci_try_set_mwi(pdev);
3970         pci_save_state(pdev);
3971
3972         /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
3973         if (pci_find_capability(pdev, PCI_CAP_ID_EXP))
3974                 pdev->needs_freset = 1;
3975
3976         return 0;
3977
3978 out_disable_device:
3979         pci_disable_device(pdev);
3980 out_error:
3981         return -ENODEV;
3982 }
3983
3984 /**
3985  * lpfc_disable_pci_dev - Disable a generic PCI device.
3986  * @phba: pointer to lpfc hba data structure.
3987  *
3988  * This routine is invoked to disable the PCI device that is common to all
3989  * PCI devices.
3990  **/
3991 static void
3992 lpfc_disable_pci_dev(struct lpfc_hba *phba)
3993 {
3994         struct pci_dev *pdev;
3995         int bars;
3996
3997         /* Obtain PCI device reference */
3998         if (!phba->pcidev)
3999                 return;
4000         else
4001                 pdev = phba->pcidev;
4002         /* Select PCI BARs */
4003         bars = pci_select_bars(pdev, IORESOURCE_MEM);
4004         /* Release PCI resource and disable PCI device */
4005         pci_release_selected_regions(pdev, bars);
4006         pci_disable_device(pdev);
4007         /* Null out PCI private reference to driver */
4008         pci_set_drvdata(pdev, NULL);
4009
4010         return;
4011 }
4012
4013 /**
4014  * lpfc_reset_hba - Reset a hba
4015  * @phba: pointer to lpfc hba data structure.
4016  *
4017  * This routine is invoked to reset a hba device. It brings the HBA
4018  * offline, performs a board restart, and then brings the board back
4019  * online. The lpfc_offline calls lpfc_sli_hba_down which will clean up
4020  * on outstanding mailbox commands.
4021  **/
4022 void
4023 lpfc_reset_hba(struct lpfc_hba *phba)
4024 {
4025         /* If resets are disabled then set error state and return. */
4026         if (!phba->cfg_enable_hba_reset) {
4027                 phba->link_state = LPFC_HBA_ERROR;
4028                 return;
4029         }
4030         lpfc_offline_prep(phba);
4031         lpfc_offline(phba);
4032         lpfc_sli_brdrestart(phba);
4033         lpfc_online(phba);
4034         lpfc_unblock_mgmt_io(phba);
4035 }
4036
4037 /**
4038  * lpfc_sli_probe_sriov_nr_virtfn - Enable a number of sr-iov virtual functions
4039  * @phba: pointer to lpfc hba data structure.
4040  * @nr_vfn: number of virtual functions to be enabled.
4041  *
4042  * This function enables the PCI SR-IOV virtual functions to a physical
4043  * function. It invokes the PCI SR-IOV api with the @nr_vfn provided to
4044  * enable the number of virtual functions to the physical function. As
4045  * not all devices support SR-IOV, the return code from the pci_enable_sriov()
4046  * API call does not considered as an error condition for most of the device.
4047  **/
4048 int
4049 lpfc_sli_probe_sriov_nr_virtfn(struct lpfc_hba *phba, int nr_vfn)
4050 {
4051         struct pci_dev *pdev = phba->pcidev;
4052         int rc;
4053
4054         rc = pci_enable_sriov(pdev, nr_vfn);
4055         if (rc) {
4056                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4057                                 "2806 Failed to enable sriov on this device "
4058                                 "with vfn number nr_vf:%d, rc:%d\n",
4059                                 nr_vfn, rc);
4060         } else
4061                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4062                                 "2807 Successful enable sriov on this device "
4063                                 "with vfn number nr_vf:%d\n", nr_vfn);
4064         return rc;
4065 }
4066
4067 /**
4068  * lpfc_sli_driver_resource_setup - Setup driver internal resources for SLI3 dev.
4069  * @phba: pointer to lpfc hba data structure.
4070  *
4071  * This routine is invoked to set up the driver internal resources specific to
4072  * support the SLI-3 HBA device it attached to.
4073  *
4074  * Return codes
4075  *      0 - successful
4076  *      other values - error
4077  **/
4078 static int
4079 lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
4080 {
4081         struct lpfc_sli *psli;
4082         int rc;
4083
4084         /*
4085          * Initialize timers used by driver
4086          */
4087
4088         /* Heartbeat timer */
4089         init_timer(&phba->hb_tmofunc);
4090         phba->hb_tmofunc.function = lpfc_hb_timeout;
4091         phba->hb_tmofunc.data = (unsigned long)phba;
4092
4093         psli = &phba->sli;
4094         /* MBOX heartbeat timer */
4095         init_timer(&psli->mbox_tmo);
4096         psli->mbox_tmo.function = lpfc_mbox_timeout;
4097         psli->mbox_tmo.data = (unsigned long) phba;
4098         /* FCP polling mode timer */
4099         init_timer(&phba->fcp_poll_timer);
4100         phba->fcp_poll_timer.function = lpfc_poll_timeout;
4101         phba->fcp_poll_timer.data = (unsigned long) phba;
4102         /* Fabric block timer */
4103         init_timer(&phba->fabric_block_timer);
4104         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4105         phba->fabric_block_timer.data = (unsigned long) phba;
4106         /* EA polling mode timer */
4107         init_timer(&phba->eratt_poll);
4108         phba->eratt_poll.function = lpfc_poll_eratt;
4109         phba->eratt_poll.data = (unsigned long) phba;
4110
4111         /* Host attention work mask setup */
4112         phba->work_ha_mask = (HA_ERATT | HA_MBATT | HA_LATT);
4113         phba->work_ha_mask |= (HA_RXMASK << (LPFC_ELS_RING * 4));
4114
4115         /* Get all the module params for configuring this host */
4116         lpfc_get_cfgparam(phba);
4117         if (phba->pcidev->device == PCI_DEVICE_ID_HORNET) {
4118                 phba->menlo_flag |= HBA_MENLO_SUPPORT;
4119                 /* check for menlo minimum sg count */
4120                 if (phba->cfg_sg_seg_cnt < LPFC_DEFAULT_MENLO_SG_SEG_CNT)
4121                         phba->cfg_sg_seg_cnt = LPFC_DEFAULT_MENLO_SG_SEG_CNT;
4122         }
4123
4124         /*
4125          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4126          * used to create the sg_dma_buf_pool must be dynamically calculated.
4127          * 2 segments are added since the IOCB needs a command and response bde.
4128          */
4129         phba->cfg_sg_dma_buf_size = sizeof(struct fcp_cmnd) +
4130                 sizeof(struct fcp_rsp) +
4131                         ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct ulp_bde64));
4132
4133         if (phba->cfg_enable_bg) {
4134                 phba->cfg_sg_seg_cnt = LPFC_MAX_SG_SEG_CNT;
4135                 phba->cfg_sg_dma_buf_size +=
4136                         phba->cfg_prot_sg_seg_cnt * sizeof(struct ulp_bde64);
4137         }
4138
4139         /* Also reinitialize the host templates with new values. */
4140         lpfc_vport_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4141         lpfc_template.sg_tablesize = phba->cfg_sg_seg_cnt;
4142
4143         phba->max_vpi = LPFC_MAX_VPI;
4144         /* This will be set to correct value after config_port mbox */
4145         phba->max_vports = 0;
4146
4147         /*
4148          * Initialize the SLI Layer to run with lpfc HBAs.
4149          */
4150         lpfc_sli_setup(phba);
4151         lpfc_sli_queue_setup(phba);
4152
4153         /* Allocate device driver memory */
4154         if (lpfc_mem_alloc(phba, BPL_ALIGN_SZ))
4155                 return -ENOMEM;
4156
4157         /*
4158          * Enable sr-iov virtual functions if supported and configured
4159          * through the module parameter.
4160          */
4161         if (phba->cfg_sriov_nr_virtfn > 0) {
4162                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4163                                                  phba->cfg_sriov_nr_virtfn);
4164                 if (rc) {
4165                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4166                                         "2808 Requested number of SR-IOV "
4167                                         "virtual functions (%d) is not "
4168                                         "supported\n",
4169                                         phba->cfg_sriov_nr_virtfn);
4170                         phba->cfg_sriov_nr_virtfn = 0;
4171                 }
4172         }
4173
4174         return 0;
4175 }
4176
4177 /**
4178  * lpfc_sli_driver_resource_unset - Unset drvr internal resources for SLI3 dev
4179  * @phba: pointer to lpfc hba data structure.
4180  *
4181  * This routine is invoked to unset the driver internal resources set up
4182  * specific for supporting the SLI-3 HBA device it attached to.
4183  **/
4184 static void
4185 lpfc_sli_driver_resource_unset(struct lpfc_hba *phba)
4186 {
4187         /* Free device driver memory allocated */
4188         lpfc_mem_free_all(phba);
4189
4190         return;
4191 }
4192
4193 /**
4194  * lpfc_sli4_driver_resource_setup - Setup drvr internal resources for SLI4 dev
4195  * @phba: pointer to lpfc hba data structure.
4196  *
4197  * This routine is invoked to set up the driver internal resources specific to
4198  * support the SLI-4 HBA device it attached to.
4199  *
4200  * Return codes
4201  *      0 - successful
4202  *      other values - error
4203  **/
4204 static int
4205 lpfc_sli4_driver_resource_setup(struct lpfc_hba *phba)
4206 {
4207         struct lpfc_sli *psli;
4208         LPFC_MBOXQ_t *mboxq;
4209         int rc, i, hbq_count, buf_size, dma_buf_size, max_buf_size;
4210         uint8_t pn_page[LPFC_MAX_SUPPORTED_PAGES] = {0};
4211         struct lpfc_mqe *mqe;
4212         int longs, sli_family;
4213
4214         /* Before proceed, wait for POST done and device ready */
4215         rc = lpfc_sli4_post_status_check(phba);
4216         if (rc)
4217                 return -ENODEV;
4218
4219         /*
4220          * Initialize timers used by driver
4221          */
4222
4223         /* Heartbeat timer */
4224         init_timer(&phba->hb_tmofunc);
4225         phba->hb_tmofunc.function = lpfc_hb_timeout;
4226         phba->hb_tmofunc.data = (unsigned long)phba;
4227         init_timer(&phba->rrq_tmr);
4228         phba->rrq_tmr.function = lpfc_rrq_timeout;
4229         phba->rrq_tmr.data = (unsigned long)phba;
4230
4231         psli = &phba->sli;
4232         /* MBOX heartbeat timer */
4233         init_timer(&psli->mbox_tmo);
4234         psli->mbox_tmo.function = lpfc_mbox_timeout;
4235         psli->mbox_tmo.data = (unsigned long) phba;
4236         /* Fabric block timer */
4237         init_timer(&phba->fabric_block_timer);
4238         phba->fabric_block_timer.function = lpfc_fabric_block_timeout;
4239         phba->fabric_block_timer.data = (unsigned long) phba;
4240         /* EA polling mode timer */
4241         init_timer(&phba->eratt_poll);
4242         phba->eratt_poll.function = lpfc_poll_eratt;
4243         phba->eratt_poll.data = (unsigned long) phba;
4244         /* FCF rediscover timer */
4245         init_timer(&phba->fcf.redisc_wait);
4246         phba->fcf.redisc_wait.function = lpfc_sli4_fcf_redisc_wait_tmo;
4247         phba->fcf.redisc_wait.data = (unsigned long)phba;
4248
4249         /*
4250          * Control structure for handling external multi-buffer mailbox
4251          * command pass-through.
4252          */
4253         memset((uint8_t *)&phba->mbox_ext_buf_ctx, 0,
4254                 sizeof(struct lpfc_mbox_ext_buf_ctx));
4255         INIT_LIST_HEAD(&phba->mbox_ext_buf_ctx.ext_dmabuf_list);
4256
4257         /*
4258          * We need to do a READ_CONFIG mailbox command here before
4259          * calling lpfc_get_cfgparam. For VFs this will report the
4260          * MAX_XRI, MAX_VPI, MAX_RPI, MAX_IOCB, and MAX_VFI settings.
4261          * All of the resources allocated
4262          * for this Port are tied to these values.
4263          */
4264         /* Get all the module params for configuring this host */
4265         lpfc_get_cfgparam(phba);
4266         phba->max_vpi = LPFC_MAX_VPI;
4267         /* This will be set to correct value after the read_config mbox */
4268         phba->max_vports = 0;
4269
4270         /* Program the default value of vlan_id and fc_map */
4271         phba->valid_vlan = 0;
4272         phba->fc_map[0] = LPFC_FCOE_FCF_MAP0;
4273         phba->fc_map[1] = LPFC_FCOE_FCF_MAP1;
4274         phba->fc_map[2] = LPFC_FCOE_FCF_MAP2;
4275
4276         /*
4277          * Since the sg_tablesize is module parameter, the sg_dma_buf_size
4278          * used to create the sg_dma_buf_pool must be dynamically calculated.
4279          * 2 segments are added since the IOCB needs a command and response bde.
4280          * To insure that the scsi sgl does not cross a 4k page boundary only
4281          * sgl sizes of must be a power of 2.
4282          */
4283         buf_size = (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp) +
4284                     ((phba->cfg_sg_seg_cnt + 2) * sizeof(struct sli4_sge)));
4285
4286         sli_family = bf_get(lpfc_sli_intf_sli_family, &phba->sli4_hba.sli_intf);
4287         max_buf_size = LPFC_SLI4_MAX_BUF_SIZE;
4288         switch (sli_family) {
4289         case LPFC_SLI_INTF_FAMILY_BE2:
4290         case LPFC_SLI_INTF_FAMILY_BE3:
4291                 /* There is a single hint for BE - 2 pages per BPL. */
4292                 if (bf_get(lpfc_sli_intf_sli_hint1, &phba->sli4_hba.sli_intf) ==
4293                     LPFC_SLI_INTF_SLI_HINT1_1)
4294                         max_buf_size = LPFC_SLI4_FL1_MAX_BUF_SIZE;
4295                 break;
4296         case LPFC_SLI_INTF_FAMILY_LNCR_A0:
4297         case LPFC_SLI_INTF_FAMILY_LNCR_B0:
4298         default:
4299                 break;
4300         }
4301         for (dma_buf_size = LPFC_SLI4_MIN_BUF_SIZE;
4302              dma_buf_size < max_buf_size && buf_size > dma_buf_size;
4303              dma_buf_size = dma_buf_size << 1)
4304                 ;
4305         if (dma_buf_size == max_buf_size)
4306                 phba->cfg_sg_seg_cnt = (dma_buf_size -
4307                         sizeof(struct fcp_cmnd) - sizeof(struct fcp_rsp) -
4308                         (2 * sizeof(struct sli4_sge))) /
4309                                 sizeof(struct sli4_sge);
4310         phba->cfg_sg_dma_buf_size = dma_buf_size;
4311
4312         /* Initialize buffer queue management fields */
4313         hbq_count = lpfc_sli_hbq_count();
4314         for (i = 0; i < hbq_count; ++i)
4315                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
4316         INIT_LIST_HEAD(&phba->rb_pend_list);
4317         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_sli4_rb_alloc;
4318         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_sli4_rb_free;
4319
4320         /*
4321          * Initialize the SLI Layer to run with lpfc SLI4 HBAs.
4322          */
4323         /* Initialize the Abort scsi buffer list used by driver */
4324         spin_lock_init(&phba->sli4_hba.abts_scsi_buf_list_lock);
4325         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
4326         /* This abort list used by worker thread */
4327         spin_lock_init(&phba->sli4_hba.abts_sgl_list_lock);
4328
4329         /*
4330          * Initialize driver internal slow-path work queues
4331          */
4332
4333         /* Driver internel slow-path CQ Event pool */
4334         INIT_LIST_HEAD(&phba->sli4_hba.sp_cqe_event_pool);
4335         /* Response IOCB work queue list */
4336         INIT_LIST_HEAD(&phba->sli4_hba.sp_queue_event);
4337         /* Asynchronous event CQ Event work queue list */
4338         INIT_LIST_HEAD(&phba->sli4_hba.sp_asynce_work_queue);
4339         /* Fast-path XRI aborted CQ Event work queue list */
4340         INIT_LIST_HEAD(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue);
4341         /* Slow-path XRI aborted CQ Event work queue list */
4342         INIT_LIST_HEAD(&phba->sli4_hba.sp_els_xri_aborted_work_queue);
4343         /* Receive queue CQ Event work queue list */
4344         INIT_LIST_HEAD(&phba->sli4_hba.sp_unsol_work_queue);
4345
4346         /* Initialize extent block lists. */
4347         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_blk_list);
4348         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_xri_blk_list);
4349         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_vfi_blk_list);
4350         INIT_LIST_HEAD(&phba->lpfc_vpi_blk_list);
4351
4352         /* Initialize the driver internal SLI layer lists. */
4353         lpfc_sli_setup(phba);
4354         lpfc_sli_queue_setup(phba);
4355
4356         /* Allocate device driver memory */
4357         rc = lpfc_mem_alloc(phba, SGL_ALIGN_SZ);
4358         if (rc)
4359                 return -ENOMEM;
4360
4361         /* IF Type 2 ports get initialized now. */
4362         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4363             LPFC_SLI_INTF_IF_TYPE_2) {
4364                 rc = lpfc_pci_function_reset(phba);
4365                 if (unlikely(rc))
4366                         return -ENODEV;
4367         }
4368
4369         /* Create the bootstrap mailbox command */
4370         rc = lpfc_create_bootstrap_mbox(phba);
4371         if (unlikely(rc))
4372                 goto out_free_mem;
4373
4374         /* Set up the host's endian order with the device. */
4375         rc = lpfc_setup_endian_order(phba);
4376         if (unlikely(rc))
4377                 goto out_free_bsmbx;
4378
4379         /* Set up the hba's configuration parameters. */
4380         rc = lpfc_sli4_read_config(phba);
4381         if (unlikely(rc))
4382                 goto out_free_bsmbx;
4383
4384         /* IF Type 0 ports get initialized now. */
4385         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) ==
4386             LPFC_SLI_INTF_IF_TYPE_0) {
4387                 rc = lpfc_pci_function_reset(phba);
4388                 if (unlikely(rc))
4389                         goto out_free_bsmbx;
4390         }
4391
4392         mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
4393                                                        GFP_KERNEL);
4394         if (!mboxq) {
4395                 rc = -ENOMEM;
4396                 goto out_free_bsmbx;
4397         }
4398
4399         /* Get the Supported Pages if PORT_CAPABILITIES is supported by port. */
4400         lpfc_supported_pages(mboxq);
4401         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
4402         if (!rc) {
4403                 mqe = &mboxq->u.mqe;
4404                 memcpy(&pn_page[0], ((uint8_t *)&mqe->un.supp_pages.word3),
4405                        LPFC_MAX_SUPPORTED_PAGES);
4406                 for (i = 0; i < LPFC_MAX_SUPPORTED_PAGES; i++) {
4407                         switch (pn_page[i]) {
4408                         case LPFC_SLI4_PARAMETERS:
4409                                 phba->sli4_hba.pc_sli4_params.supported = 1;
4410                                 break;
4411                         default:
4412                                 break;
4413                         }
4414                 }
4415                 /* Read the port's SLI4 Parameters capabilities if supported. */
4416                 if (phba->sli4_hba.pc_sli4_params.supported)
4417                         rc = lpfc_pc_sli4_params_get(phba, mboxq);
4418                 if (rc) {
4419                         mempool_free(mboxq, phba->mbox_mem_pool);
4420                         rc = -EIO;
4421                         goto out_free_bsmbx;
4422                 }
4423         }
4424         /*
4425          * Get sli4 parameters that override parameters from Port capabilities.
4426          * If this call fails, it isn't critical unless the SLI4 parameters come
4427          * back in conflict.
4428          */
4429         rc = lpfc_get_sli4_parameters(phba, mboxq);
4430         if (rc) {
4431                 if (phba->sli4_hba.extents_in_use &&
4432                     phba->sli4_hba.rpi_hdrs_in_use) {
4433                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4434                                 "2999 Unsupported SLI4 Parameters "
4435                                 "Extents and RPI headers enabled.\n");
4436                         goto out_free_bsmbx;
4437                 }
4438         }
4439         mempool_free(mboxq, phba->mbox_mem_pool);
4440         /* Create all the SLI4 queues */
4441         rc = lpfc_sli4_queue_create(phba);
4442         if (rc)
4443                 goto out_free_bsmbx;
4444
4445         /* Create driver internal CQE event pool */
4446         rc = lpfc_sli4_cq_event_pool_create(phba);
4447         if (rc)
4448                 goto out_destroy_queue;
4449
4450         /* Initialize and populate the iocb list per host */
4451         rc = lpfc_init_sgl_list(phba);
4452         if (rc) {
4453                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4454                                 "1400 Failed to initialize sgl list.\n");
4455                 goto out_destroy_cq_event_pool;
4456         }
4457         rc = lpfc_init_active_sgl_array(phba);
4458         if (rc) {
4459                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4460                                 "1430 Failed to initialize sgl list.\n");
4461                 goto out_free_sgl_list;
4462         }
4463         rc = lpfc_sli4_init_rpi_hdrs(phba);
4464         if (rc) {
4465                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4466                                 "1432 Failed to initialize rpi headers.\n");
4467                 goto out_free_active_sgl;
4468         }
4469
4470         /* Allocate eligible FCF bmask memory for FCF roundrobin failover */
4471         longs = (LPFC_SLI4_FCF_TBL_INDX_MAX + BITS_PER_LONG - 1)/BITS_PER_LONG;
4472         phba->fcf.fcf_rr_bmask = kzalloc(longs * sizeof(unsigned long),
4473                                          GFP_KERNEL);
4474         if (!phba->fcf.fcf_rr_bmask) {
4475                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4476                                 "2759 Failed allocate memory for FCF round "
4477                                 "robin failover bmask\n");
4478                 rc = -ENOMEM;
4479                 goto out_remove_rpi_hdrs;
4480         }
4481
4482         phba->sli4_hba.fcp_eq_hdl = kzalloc((sizeof(struct lpfc_fcp_eq_hdl) *
4483                                     phba->cfg_fcp_eq_count), GFP_KERNEL);
4484         if (!phba->sli4_hba.fcp_eq_hdl) {
4485                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4486                                 "2572 Failed allocate memory for fast-path "
4487                                 "per-EQ handle array\n");
4488                 rc = -ENOMEM;
4489                 goto out_free_fcf_rr_bmask;
4490         }
4491
4492         phba->sli4_hba.msix_entries = kzalloc((sizeof(struct msix_entry) *
4493                                       phba->sli4_hba.cfg_eqn), GFP_KERNEL);
4494         if (!phba->sli4_hba.msix_entries) {
4495                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4496                                 "2573 Failed allocate memory for msi-x "
4497                                 "interrupt vector entries\n");
4498                 rc = -ENOMEM;
4499                 goto out_free_fcp_eq_hdl;
4500         }
4501
4502         /*
4503          * Enable sr-iov virtual functions if supported and configured
4504          * through the module parameter.
4505          */
4506         if (phba->cfg_sriov_nr_virtfn > 0) {
4507                 rc = lpfc_sli_probe_sriov_nr_virtfn(phba,
4508                                                  phba->cfg_sriov_nr_virtfn);
4509                 if (rc) {
4510                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
4511                                         "3020 Requested number of SR-IOV "
4512                                         "virtual functions (%d) is not "
4513                                         "supported\n",
4514                                         phba->cfg_sriov_nr_virtfn);
4515                         phba->cfg_sriov_nr_virtfn = 0;
4516                 }
4517         }
4518
4519         return rc;
4520
4521 out_free_fcp_eq_hdl:
4522         kfree(phba->sli4_hba.fcp_eq_hdl);
4523 out_free_fcf_rr_bmask:
4524         kfree(phba->fcf.fcf_rr_bmask);
4525 out_remove_rpi_hdrs:
4526         lpfc_sli4_remove_rpi_hdrs(phba);
4527 out_free_active_sgl:
4528         lpfc_free_active_sgl(phba);
4529 out_free_sgl_list:
4530         lpfc_free_sgl_list(phba);
4531 out_destroy_cq_event_pool:
4532         lpfc_sli4_cq_event_pool_destroy(phba);
4533 out_destroy_queue:
4534         lpfc_sli4_queue_destroy(phba);
4535 out_free_bsmbx:
4536         lpfc_destroy_bootstrap_mbox(phba);
4537 out_free_mem:
4538         lpfc_mem_free(phba);
4539         return rc;
4540 }
4541
4542 /**
4543  * lpfc_sli4_driver_resource_unset - Unset drvr internal resources for SLI4 dev
4544  * @phba: pointer to lpfc hba data structure.
4545  *
4546  * This routine is invoked to unset the driver internal resources set up
4547  * specific for supporting the SLI-4 HBA device it attached to.
4548  **/
4549 static void
4550 lpfc_sli4_driver_resource_unset(struct lpfc_hba *phba)
4551 {
4552         struct lpfc_fcf_conn_entry *conn_entry, *next_conn_entry;
4553
4554         /* Free memory allocated for msi-x interrupt vector entries */
4555         kfree(phba->sli4_hba.msix_entries);
4556
4557         /* Free memory allocated for fast-path work queue handles */
4558         kfree(phba->sli4_hba.fcp_eq_hdl);
4559
4560         /* Free the allocated rpi headers. */
4561         lpfc_sli4_remove_rpi_hdrs(phba);
4562         lpfc_sli4_remove_rpis(phba);
4563
4564         /* Free eligible FCF index bmask */
4565         kfree(phba->fcf.fcf_rr_bmask);
4566
4567         /* Free the ELS sgl list */
4568         lpfc_free_active_sgl(phba);
4569         lpfc_free_sgl_list(phba);
4570
4571         /* Free the SCSI sgl management array */
4572         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4573
4574         /* Free the SLI4 queues */
4575         lpfc_sli4_queue_destroy(phba);
4576
4577         /* Free the completion queue EQ event pool */
4578         lpfc_sli4_cq_event_release_all(phba);
4579         lpfc_sli4_cq_event_pool_destroy(phba);
4580
4581         /* Release resource identifiers. */
4582         lpfc_sli4_dealloc_resource_identifiers(phba);
4583
4584         /* Free the bsmbx region. */
4585         lpfc_destroy_bootstrap_mbox(phba);
4586
4587         /* Free the SLI Layer memory with SLI4 HBAs */
4588         lpfc_mem_free_all(phba);
4589
4590         /* Free the current connect table */
4591         list_for_each_entry_safe(conn_entry, next_conn_entry,
4592                 &phba->fcf_conn_rec_list, list) {
4593                 list_del_init(&conn_entry->list);
4594                 kfree(conn_entry);
4595         }
4596
4597         return;
4598 }
4599
4600 /**
4601  * lpfc_init_api_table_setup - Set up init api function jump table
4602  * @phba: The hba struct for which this call is being executed.
4603  * @dev_grp: The HBA PCI-Device group number.
4604  *
4605  * This routine sets up the device INIT interface API function jump table
4606  * in @phba struct.
4607  *
4608  * Returns: 0 - success, -ENODEV - failure.
4609  **/
4610 int
4611 lpfc_init_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp)
4612 {
4613         phba->lpfc_hba_init_link = lpfc_hba_init_link;
4614         phba->lpfc_hba_down_link = lpfc_hba_down_link;
4615         phba->lpfc_selective_reset = lpfc_selective_reset;
4616         switch (dev_grp) {
4617         case LPFC_PCI_DEV_LP:
4618                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s3;
4619                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s3;
4620                 phba->lpfc_stop_port = lpfc_stop_port_s3;
4621                 break;
4622         case LPFC_PCI_DEV_OC:
4623                 phba->lpfc_hba_down_post = lpfc_hba_down_post_s4;
4624                 phba->lpfc_handle_eratt = lpfc_handle_eratt_s4;
4625                 phba->lpfc_stop_port = lpfc_stop_port_s4;
4626                 break;
4627         default:
4628                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
4629                                 "1431 Invalid HBA PCI-device group: 0x%x\n",
4630                                 dev_grp);
4631                 return -ENODEV;
4632                 break;
4633         }
4634         return 0;
4635 }
4636
4637 /**
4638  * lpfc_setup_driver_resource_phase1 - Phase1 etup driver internal resources.
4639  * @phba: pointer to lpfc hba data structure.
4640  *
4641  * This routine is invoked to set up the driver internal resources before the
4642  * device specific resource setup to support the HBA device it attached to.
4643  *
4644  * Return codes
4645  *      0 - successful
4646  *      other values - error
4647  **/
4648 static int
4649 lpfc_setup_driver_resource_phase1(struct lpfc_hba *phba)
4650 {
4651         /*
4652          * Driver resources common to all SLI revisions
4653          */
4654         atomic_set(&phba->fast_event_count, 0);
4655         spin_lock_init(&phba->hbalock);
4656
4657         /* Initialize ndlp management spinlock */
4658         spin_lock_init(&phba->ndlp_lock);
4659
4660         INIT_LIST_HEAD(&phba->port_list);
4661         INIT_LIST_HEAD(&phba->work_list);
4662         init_waitqueue_head(&phba->wait_4_mlo_m_q);
4663
4664         /* Initialize the wait queue head for the kernel thread */
4665         init_waitqueue_head(&phba->work_waitq);
4666
4667         /* Initialize the scsi buffer list used by driver for scsi IO */
4668         spin_lock_init(&phba->scsi_buf_list_lock);
4669         INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list);
4670
4671         /* Initialize the fabric iocb list */
4672         INIT_LIST_HEAD(&phba->fabric_iocb_list);
4673
4674         /* Initialize list to save ELS buffers */
4675         INIT_LIST_HEAD(&phba->elsbuf);
4676
4677         /* Initialize FCF connection rec list */
4678         INIT_LIST_HEAD(&phba->fcf_conn_rec_list);
4679
4680         return 0;
4681 }
4682
4683 /**
4684  * lpfc_setup_driver_resource_phase2 - Phase2 setup driver internal resources.
4685  * @phba: pointer to lpfc hba data structure.
4686  *
4687  * This routine is invoked to set up the driver internal resources after the
4688  * device specific resource setup to support the HBA device it attached to.
4689  *
4690  * Return codes
4691  *      0 - successful
4692  *      other values - error
4693  **/
4694 static int
4695 lpfc_setup_driver_resource_phase2(struct lpfc_hba *phba)
4696 {
4697         int error;
4698
4699         /* Startup the kernel thread for this host adapter. */
4700         phba->worker_thread = kthread_run(lpfc_do_work, phba,
4701                                           "lpfc_worker_%d", phba->brd_no);
4702         if (IS_ERR(phba->worker_thread)) {
4703                 error = PTR_ERR(phba->worker_thread);
4704                 return error;
4705         }
4706
4707         return 0;
4708 }
4709
4710 /**
4711  * lpfc_unset_driver_resource_phase2 - Phase2 unset driver internal resources.
4712  * @phba: pointer to lpfc hba data structure.
4713  *
4714  * This routine is invoked to unset the driver internal resources set up after
4715  * the device specific resource setup for supporting the HBA device it
4716  * attached to.
4717  **/
4718 static void
4719 lpfc_unset_driver_resource_phase2(struct lpfc_hba *phba)
4720 {
4721         /* Stop kernel worker thread */
4722         kthread_stop(phba->worker_thread);
4723 }
4724
4725 /**
4726  * lpfc_free_iocb_list - Free iocb list.
4727  * @phba: pointer to lpfc hba data structure.
4728  *
4729  * This routine is invoked to free the driver's IOCB list and memory.
4730  **/
4731 static void
4732 lpfc_free_iocb_list(struct lpfc_hba *phba)
4733 {
4734         struct lpfc_iocbq *iocbq_entry = NULL, *iocbq_next = NULL;
4735
4736         spin_lock_irq(&phba->hbalock);
4737         list_for_each_entry_safe(iocbq_entry, iocbq_next,
4738                                  &phba->lpfc_iocb_list, list) {
4739                 list_del(&iocbq_entry->list);
4740                 kfree(iocbq_entry);
4741                 phba->total_iocbq_bufs--;
4742         }
4743         spin_unlock_irq(&phba->hbalock);
4744
4745         return;
4746 }
4747
4748 /**
4749  * lpfc_init_iocb_list - Allocate and initialize iocb list.
4750  * @phba: pointer to lpfc hba data structure.
4751  *
4752  * This routine is invoked to allocate and initizlize the driver's IOCB
4753  * list and set up the IOCB tag array accordingly.
4754  *
4755  * Return codes
4756  *      0 - successful
4757  *      other values - error
4758  **/
4759 static int
4760 lpfc_init_iocb_list(struct lpfc_hba *phba, int iocb_count)
4761 {
4762         struct lpfc_iocbq *iocbq_entry = NULL;
4763         uint16_t iotag;
4764         int i;
4765
4766         /* Initialize and populate the iocb list per host.  */
4767         INIT_LIST_HEAD(&phba->lpfc_iocb_list);
4768         for (i = 0; i < iocb_count; i++) {
4769                 iocbq_entry = kzalloc(sizeof(struct lpfc_iocbq), GFP_KERNEL);
4770                 if (iocbq_entry == NULL) {
4771                         printk(KERN_ERR "%s: only allocated %d iocbs of "
4772                                 "expected %d count. Unloading driver.\n",
4773                                 __func__, i, LPFC_IOCB_LIST_CNT);
4774                         goto out_free_iocbq;
4775                 }
4776
4777                 iotag = lpfc_sli_next_iotag(phba, iocbq_entry);
4778                 if (iotag == 0) {
4779                         kfree(iocbq_entry);
4780                         printk(KERN_ERR "%s: failed to allocate IOTAG. "
4781                                 "Unloading driver.\n", __func__);
4782                         goto out_free_iocbq;
4783                 }
4784                 iocbq_entry->sli4_lxritag = NO_XRI;
4785                 iocbq_entry->sli4_xritag = NO_XRI;
4786
4787                 spin_lock_irq(&phba->hbalock);
4788                 list_add(&iocbq_entry->list, &phba->lpfc_iocb_list);
4789                 phba->total_iocbq_bufs++;
4790                 spin_unlock_irq(&phba->hbalock);
4791         }
4792
4793         return 0;
4794
4795 out_free_iocbq:
4796         lpfc_free_iocb_list(phba);
4797
4798         return -ENOMEM;
4799 }
4800
4801 /**
4802  * lpfc_free_sgl_list - Free sgl list.
4803  * @phba: pointer to lpfc hba data structure.
4804  *
4805  * This routine is invoked to free the driver's sgl list and memory.
4806  **/
4807 static void
4808 lpfc_free_sgl_list(struct lpfc_hba *phba)
4809 {
4810         struct lpfc_sglq *sglq_entry = NULL, *sglq_next = NULL;
4811         LIST_HEAD(sglq_list);
4812
4813         spin_lock_irq(&phba->hbalock);
4814         list_splice_init(&phba->sli4_hba.lpfc_sgl_list, &sglq_list);
4815         spin_unlock_irq(&phba->hbalock);
4816
4817         list_for_each_entry_safe(sglq_entry, sglq_next,
4818                                  &sglq_list, list) {
4819                 list_del(&sglq_entry->list);
4820                 lpfc_mbuf_free(phba, sglq_entry->virt, sglq_entry->phys);
4821                 kfree(sglq_entry);
4822                 phba->sli4_hba.total_sglq_bufs--;
4823         }
4824         kfree(phba->sli4_hba.lpfc_els_sgl_array);
4825 }
4826
4827 /**
4828  * lpfc_init_active_sgl_array - Allocate the buf to track active ELS XRIs.
4829  * @phba: pointer to lpfc hba data structure.
4830  *
4831  * This routine is invoked to allocate the driver's active sgl memory.
4832  * This array will hold the sglq_entry's for active IOs.
4833  **/
4834 static int
4835 lpfc_init_active_sgl_array(struct lpfc_hba *phba)
4836 {
4837         int size;
4838         size = sizeof(struct lpfc_sglq *);
4839         size *= phba->sli4_hba.max_cfg_param.max_xri;
4840
4841         phba->sli4_hba.lpfc_sglq_active_list =
4842                 kzalloc(size, GFP_KERNEL);
4843         if (!phba->sli4_hba.lpfc_sglq_active_list)
4844                 return -ENOMEM;
4845         return 0;
4846 }
4847
4848 /**
4849  * lpfc_free_active_sgl - Free the buf that tracks active ELS XRIs.
4850  * @phba: pointer to lpfc hba data structure.
4851  *
4852  * This routine is invoked to walk through the array of active sglq entries
4853  * and free all of the resources.
4854  * This is just a place holder for now.
4855  **/
4856 static void
4857 lpfc_free_active_sgl(struct lpfc_hba *phba)
4858 {
4859         kfree(phba->sli4_hba.lpfc_sglq_active_list);
4860 }
4861
4862 /**
4863  * lpfc_init_sgl_list - Allocate and initialize sgl list.
4864  * @phba: pointer to lpfc hba data structure.
4865  *
4866  * This routine is invoked to allocate and initizlize the driver's sgl
4867  * list and set up the sgl xritag tag array accordingly.
4868  *
4869  * Return codes
4870  *      0 - successful
4871  *      other values - error
4872  **/
4873 static int
4874 lpfc_init_sgl_list(struct lpfc_hba *phba)
4875 {
4876         struct lpfc_sglq *sglq_entry = NULL;
4877         int i;
4878         int els_xri_cnt;
4879
4880         els_xri_cnt = lpfc_sli4_get_els_iocb_cnt(phba);
4881         lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
4882                                 "2400 ELS XRI count %d.\n",
4883                                 els_xri_cnt);
4884         /* Initialize and populate the sglq list per host/VF. */
4885         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_sgl_list);
4886         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_abts_els_sgl_list);
4887
4888         /* Sanity check on XRI management */
4889         if (phba->sli4_hba.max_cfg_param.max_xri <= els_xri_cnt) {
4890                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4891                                 "2562 No room left for SCSI XRI allocation: "
4892                                 "max_xri=%d, els_xri=%d\n",
4893                                 phba->sli4_hba.max_cfg_param.max_xri,
4894                                 els_xri_cnt);
4895                 return -ENOMEM;
4896         }
4897
4898         /* Allocate memory for the ELS XRI management array */
4899         phba->sli4_hba.lpfc_els_sgl_array =
4900                         kzalloc((sizeof(struct lpfc_sglq *) * els_xri_cnt),
4901                         GFP_KERNEL);
4902
4903         if (!phba->sli4_hba.lpfc_els_sgl_array) {
4904                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4905                                 "2401 Failed to allocate memory for ELS "
4906                                 "XRI management array of size %d.\n",
4907                                 els_xri_cnt);
4908                 return -ENOMEM;
4909         }
4910
4911         /* Keep the SCSI XRI into the XRI management array */
4912         phba->sli4_hba.scsi_xri_max =
4913                         phba->sli4_hba.max_cfg_param.max_xri - els_xri_cnt;
4914         phba->sli4_hba.scsi_xri_cnt = 0;
4915         phba->sli4_hba.lpfc_scsi_psb_array =
4916                         kzalloc((sizeof(struct lpfc_scsi_buf *) *
4917                         phba->sli4_hba.scsi_xri_max), GFP_KERNEL);
4918
4919         if (!phba->sli4_hba.lpfc_scsi_psb_array) {
4920                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
4921                                 "2563 Failed to allocate memory for SCSI "
4922                                 "XRI management array of size %d.\n",
4923                                 phba->sli4_hba.scsi_xri_max);
4924                 kfree(phba->sli4_hba.lpfc_els_sgl_array);
4925                 return -ENOMEM;
4926         }
4927
4928         for (i = 0; i < els_xri_cnt; i++) {
4929                 sglq_entry = kzalloc(sizeof(struct lpfc_sglq), GFP_KERNEL);
4930                 if (sglq_entry == NULL) {
4931                         printk(KERN_ERR "%s: only allocated %d sgls of "
4932                                 "expected %d count. Unloading driver.\n",
4933                                 __func__, i, els_xri_cnt);
4934                         goto out_free_mem;
4935                 }
4936
4937                 sglq_entry->buff_type = GEN_BUFF_TYPE;
4938                 sglq_entry->virt = lpfc_mbuf_alloc(phba, 0, &sglq_entry->phys);
4939                 if (sglq_entry->virt == NULL) {
4940                         kfree(sglq_entry);
4941                         printk(KERN_ERR "%s: failed to allocate mbuf.\n"
4942                                 "Unloading driver.\n", __func__);
4943                         goto out_free_mem;
4944                 }
4945                 sglq_entry->sgl = sglq_entry->virt;
4946                 memset(sglq_entry->sgl, 0, LPFC_BPL_SIZE);
4947
4948                 /* The list order is used by later block SGL registraton */
4949                 spin_lock_irq(&phba->hbalock);
4950                 sglq_entry->state = SGL_FREED;
4951                 list_add_tail(&sglq_entry->list, &phba->sli4_hba.lpfc_sgl_list);
4952                 phba->sli4_hba.lpfc_els_sgl_array[i] = sglq_entry;
4953                 phba->sli4_hba.total_sglq_bufs++;
4954                 spin_unlock_irq(&phba->hbalock);
4955         }
4956         return 0;
4957
4958 out_free_mem:
4959         kfree(phba->sli4_hba.lpfc_scsi_psb_array);
4960         lpfc_free_sgl_list(phba);
4961         return -ENOMEM;
4962 }
4963
4964 /**
4965  * lpfc_sli4_init_rpi_hdrs - Post the rpi header memory region to the port
4966  * @phba: pointer to lpfc hba data structure.
4967  *
4968  * This routine is invoked to post rpi header templates to the
4969  * HBA consistent with the SLI-4 interface spec.  This routine
4970  * posts a PAGE_SIZE memory region to the port to hold up to
4971  * PAGE_SIZE modulo 64 rpi context headers.
4972  * No locks are held here because this is an initialization routine
4973  * called only from probe or lpfc_online when interrupts are not
4974  * enabled and the driver is reinitializing the device.
4975  *
4976  * Return codes
4977  *      0 - successful
4978  *      -ENOMEM - No available memory
4979  *      -EIO - The mailbox failed to complete successfully.
4980  **/
4981 int
4982 lpfc_sli4_init_rpi_hdrs(struct lpfc_hba *phba)
4983 {
4984         int rc = 0;
4985         struct lpfc_rpi_hdr *rpi_hdr;
4986
4987         INIT_LIST_HEAD(&phba->sli4_hba.lpfc_rpi_hdr_list);
4988         /*
4989          * If the SLI4 port supports extents, posting the rpi header isn't
4990          * required.  Set the expected maximum count and let the actual value
4991          * get set when extents are fully allocated.
4992          */
4993         if (!phba->sli4_hba.rpi_hdrs_in_use) {
4994                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.max_rpi;
4995                 return rc;
4996         }
4997         if (phba->sli4_hba.extents_in_use)
4998                 return -EIO;
4999
5000         rpi_hdr = lpfc_sli4_create_rpi_hdr(phba);
5001         if (!rpi_hdr) {
5002                 lpfc_printf_log(phba, KERN_ERR, LOG_MBOX | LOG_SLI,
5003                                 "0391 Error during rpi post operation\n");
5004                 lpfc_sli4_remove_rpis(phba);
5005                 rc = -ENODEV;
5006         }
5007
5008         return rc;
5009 }
5010
5011 /**
5012  * lpfc_sli4_create_rpi_hdr - Allocate an rpi header memory region
5013  * @phba: pointer to lpfc hba data structure.
5014  *
5015  * This routine is invoked to allocate a single 4KB memory region to
5016  * support rpis and stores them in the phba.  This single region
5017  * provides support for up to 64 rpis.  The region is used globally
5018  * by the device.
5019  *
5020  * Returns:
5021  *   A valid rpi hdr on success.
5022  *   A NULL pointer on any failure.
5023  **/
5024 struct lpfc_rpi_hdr *
5025 lpfc_sli4_create_rpi_hdr(struct lpfc_hba *phba)
5026 {
5027         uint16_t rpi_limit, curr_rpi_range;
5028         struct lpfc_dmabuf *dmabuf;
5029         struct lpfc_rpi_hdr *rpi_hdr;
5030         uint32_t rpi_count;
5031
5032         /*
5033          * If the SLI4 port supports extents, posting the rpi header isn't
5034          * required.  Set the expected maximum count and let the actual value
5035          * get set when extents are fully allocated.
5036          */
5037         if (!phba->sli4_hba.rpi_hdrs_in_use)
5038                 return NULL;
5039         if (phba->sli4_hba.extents_in_use)
5040                 return NULL;
5041
5042         /* The limit on the logical index is just the max_rpi count. */
5043         rpi_limit = phba->sli4_hba.max_cfg_param.rpi_base +
5044         phba->sli4_hba.max_cfg_param.max_rpi - 1;
5045
5046         spin_lock_irq(&phba->hbalock);
5047         /*
5048          * Establish the starting RPI in this header block.  The starting
5049          * rpi is normalized to a zero base because the physical rpi is
5050          * port based.
5051          */
5052         curr_rpi_range = phba->sli4_hba.next_rpi -
5053                 phba->sli4_hba.max_cfg_param.rpi_base;
5054         spin_unlock_irq(&phba->hbalock);
5055
5056         /*
5057          * The port has a limited number of rpis. The increment here
5058          * is LPFC_RPI_HDR_COUNT - 1 to account for the starting value
5059          * and to allow the full max_rpi range per port.
5060          */
5061         if ((curr_rpi_range + (LPFC_RPI_HDR_COUNT - 1)) > rpi_limit)
5062                 rpi_count = rpi_limit - curr_rpi_range;
5063         else
5064                 rpi_count = LPFC_RPI_HDR_COUNT;
5065
5066         if (!rpi_count)
5067                 return NULL;
5068         /*
5069          * First allocate the protocol header region for the port.  The
5070          * port expects a 4KB DMA-mapped memory region that is 4K aligned.
5071          */
5072         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5073         if (!dmabuf)
5074                 return NULL;
5075
5076         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5077                                           LPFC_HDR_TEMPLATE_SIZE,
5078                                           &dmabuf->phys,
5079                                           GFP_KERNEL);
5080         if (!dmabuf->virt) {
5081                 rpi_hdr = NULL;
5082                 goto err_free_dmabuf;
5083         }
5084
5085         memset(dmabuf->virt, 0, LPFC_HDR_TEMPLATE_SIZE);
5086         if (!IS_ALIGNED(dmabuf->phys, LPFC_HDR_TEMPLATE_SIZE)) {
5087                 rpi_hdr = NULL;
5088                 goto err_free_coherent;
5089         }
5090
5091         /* Save the rpi header data for cleanup later. */
5092         rpi_hdr = kzalloc(sizeof(struct lpfc_rpi_hdr), GFP_KERNEL);
5093         if (!rpi_hdr)
5094                 goto err_free_coherent;
5095
5096         rpi_hdr->dmabuf = dmabuf;
5097         rpi_hdr->len = LPFC_HDR_TEMPLATE_SIZE;
5098         rpi_hdr->page_count = 1;
5099         spin_lock_irq(&phba->hbalock);
5100
5101         /* The rpi_hdr stores the logical index only. */
5102         rpi_hdr->start_rpi = curr_rpi_range;
5103         list_add_tail(&rpi_hdr->list, &phba->sli4_hba.lpfc_rpi_hdr_list);
5104
5105         /*
5106          * The next_rpi stores the next logical module-64 rpi value used
5107          * to post physical rpis in subsequent rpi postings.
5108          */
5109         phba->sli4_hba.next_rpi += rpi_count;
5110         spin_unlock_irq(&phba->hbalock);
5111         return rpi_hdr;
5112
5113  err_free_coherent:
5114         dma_free_coherent(&phba->pcidev->dev, LPFC_HDR_TEMPLATE_SIZE,
5115                           dmabuf->virt, dmabuf->phys);
5116  err_free_dmabuf:
5117         kfree(dmabuf);
5118         return NULL;
5119 }
5120
5121 /**
5122  * lpfc_sli4_remove_rpi_hdrs - Remove all rpi header memory regions
5123  * @phba: pointer to lpfc hba data structure.
5124  *
5125  * This routine is invoked to remove all memory resources allocated
5126  * to support rpis for SLI4 ports not supporting extents. This routine
5127  * presumes the caller has released all rpis consumed by fabric or port
5128  * logins and is prepared to have the header pages removed.
5129  **/
5130 void
5131 lpfc_sli4_remove_rpi_hdrs(struct lpfc_hba *phba)
5132 {
5133         struct lpfc_rpi_hdr *rpi_hdr, *next_rpi_hdr;
5134
5135         if (!phba->sli4_hba.rpi_hdrs_in_use)
5136                 goto exit;
5137
5138         list_for_each_entry_safe(rpi_hdr, next_rpi_hdr,
5139                                  &phba->sli4_hba.lpfc_rpi_hdr_list, list) {
5140                 list_del(&rpi_hdr->list);
5141                 dma_free_coherent(&phba->pcidev->dev, rpi_hdr->len,
5142                                   rpi_hdr->dmabuf->virt, rpi_hdr->dmabuf->phys);
5143                 kfree(rpi_hdr->dmabuf);
5144                 kfree(rpi_hdr);
5145         }
5146  exit:
5147         /* There are no rpis available to the port now. */
5148         phba->sli4_hba.next_rpi = 0;
5149 }
5150
5151 /**
5152  * lpfc_hba_alloc - Allocate driver hba data structure for a device.
5153  * @pdev: pointer to pci device data structure.
5154  *
5155  * This routine is invoked to allocate the driver hba data structure for an
5156  * HBA device. If the allocation is successful, the phba reference to the
5157  * PCI device data structure is set.
5158  *
5159  * Return codes
5160  *      pointer to @phba - successful
5161  *      NULL - error
5162  **/
5163 static struct lpfc_hba *
5164 lpfc_hba_alloc(struct pci_dev *pdev)
5165 {
5166         struct lpfc_hba *phba;
5167
5168         /* Allocate memory for HBA structure */
5169         phba = kzalloc(sizeof(struct lpfc_hba), GFP_KERNEL);
5170         if (!phba) {
5171                 dev_err(&pdev->dev, "failed to allocate hba struct\n");
5172                 return NULL;
5173         }
5174
5175         /* Set reference to PCI device in HBA structure */
5176         phba->pcidev = pdev;
5177
5178         /* Assign an unused board number */
5179         phba->brd_no = lpfc_get_instance();
5180         if (phba->brd_no < 0) {
5181                 kfree(phba);
5182                 return NULL;
5183         }
5184
5185         spin_lock_init(&phba->ct_ev_lock);
5186         INIT_LIST_HEAD(&phba->ct_ev_waiters);
5187
5188         return phba;
5189 }
5190
5191 /**
5192  * lpfc_hba_free - Free driver hba data structure with a device.
5193  * @phba: pointer to lpfc hba data structure.
5194  *
5195  * This routine is invoked to free the driver hba data structure with an
5196  * HBA device.
5197  **/
5198 static void
5199 lpfc_hba_free(struct lpfc_hba *phba)
5200 {
5201         /* Release the driver assigned board number */
5202         idr_remove(&lpfc_hba_index, phba->brd_no);
5203
5204         kfree(phba);
5205         return;
5206 }
5207
5208 /**
5209  * lpfc_create_shost - Create hba physical port with associated scsi host.
5210  * @phba: pointer to lpfc hba data structure.
5211  *
5212  * This routine is invoked to create HBA physical port and associate a SCSI
5213  * host with it.
5214  *
5215  * Return codes
5216  *      0 - successful
5217  *      other values - error
5218  **/
5219 static int
5220 lpfc_create_shost(struct lpfc_hba *phba)
5221 {
5222         struct lpfc_vport *vport;
5223         struct Scsi_Host  *shost;
5224
5225         /* Initialize HBA FC structure */
5226         phba->fc_edtov = FF_DEF_EDTOV;
5227         phba->fc_ratov = FF_DEF_RATOV;
5228         phba->fc_altov = FF_DEF_ALTOV;
5229         phba->fc_arbtov = FF_DEF_ARBTOV;
5230
5231         atomic_set(&phba->sdev_cnt, 0);
5232         vport = lpfc_create_port(phba, phba->brd_no, &phba->pcidev->dev);
5233         if (!vport)
5234                 return -ENODEV;
5235
5236         shost = lpfc_shost_from_vport(vport);
5237         phba->pport = vport;
5238         lpfc_debugfs_initialize(vport);
5239         /* Put reference to SCSI host to driver's device private data */
5240         pci_set_drvdata(phba->pcidev, shost);
5241
5242         return 0;
5243 }
5244
5245 /**
5246  * lpfc_destroy_shost - Destroy hba physical port with associated scsi host.
5247  * @phba: pointer to lpfc hba data structure.
5248  *
5249  * This routine is invoked to destroy HBA physical port and the associated
5250  * SCSI host.
5251  **/
5252 static void
5253 lpfc_destroy_shost(struct lpfc_hba *phba)
5254 {
5255         struct lpfc_vport *vport = phba->pport;
5256
5257         /* Destroy physical port that associated with the SCSI host */
5258         destroy_port(vport);
5259
5260         return;
5261 }
5262
5263 /**
5264  * lpfc_setup_bg - Setup Block guard structures and debug areas.
5265  * @phba: pointer to lpfc hba data structure.
5266  * @shost: the shost to be used to detect Block guard settings.
5267  *
5268  * This routine sets up the local Block guard protocol settings for @shost.
5269  * This routine also allocates memory for debugging bg buffers.
5270  **/
5271 static void
5272 lpfc_setup_bg(struct lpfc_hba *phba, struct Scsi_Host *shost)
5273 {
5274         int pagecnt = 10;
5275         if (lpfc_prot_mask && lpfc_prot_guard) {
5276                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5277                                 "1478 Registering BlockGuard with the "
5278                                 "SCSI layer\n");
5279                 scsi_host_set_prot(shost, lpfc_prot_mask);
5280                 scsi_host_set_guard(shost, lpfc_prot_guard);
5281         }
5282         if (!_dump_buf_data) {
5283                 while (pagecnt) {
5284                         spin_lock_init(&_dump_buf_lock);
5285                         _dump_buf_data =
5286                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5287                         if (_dump_buf_data) {
5288                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5289                                         "9043 BLKGRD: allocated %d pages for "
5290                                        "_dump_buf_data at 0x%p\n",
5291                                        (1 << pagecnt), _dump_buf_data);
5292                                 _dump_buf_data_order = pagecnt;
5293                                 memset(_dump_buf_data, 0,
5294                                        ((1 << PAGE_SHIFT) << pagecnt));
5295                                 break;
5296                         } else
5297                                 --pagecnt;
5298                 }
5299                 if (!_dump_buf_data_order)
5300                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5301                                 "9044 BLKGRD: ERROR unable to allocate "
5302                                "memory for hexdump\n");
5303         } else
5304                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5305                         "9045 BLKGRD: already allocated _dump_buf_data=0x%p"
5306                        "\n", _dump_buf_data);
5307         if (!_dump_buf_dif) {
5308                 while (pagecnt) {
5309                         _dump_buf_dif =
5310                                 (char *) __get_free_pages(GFP_KERNEL, pagecnt);
5311                         if (_dump_buf_dif) {
5312                                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5313                                         "9046 BLKGRD: allocated %d pages for "
5314                                        "_dump_buf_dif at 0x%p\n",
5315                                        (1 << pagecnt), _dump_buf_dif);
5316                                 _dump_buf_dif_order = pagecnt;
5317                                 memset(_dump_buf_dif, 0,
5318                                        ((1 << PAGE_SHIFT) << pagecnt));
5319                                 break;
5320                         } else
5321                                 --pagecnt;
5322                 }
5323                 if (!_dump_buf_dif_order)
5324                         lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5325                         "9047 BLKGRD: ERROR unable to allocate "
5326                                "memory for hexdump\n");
5327         } else
5328                 lpfc_printf_log(phba, KERN_ERR, LOG_BG,
5329                         "9048 BLKGRD: already allocated _dump_buf_dif=0x%p\n",
5330                        _dump_buf_dif);
5331 }
5332
5333 /**
5334  * lpfc_post_init_setup - Perform necessary device post initialization setup.
5335  * @phba: pointer to lpfc hba data structure.
5336  *
5337  * This routine is invoked to perform all the necessary post initialization
5338  * setup for the device.
5339  **/
5340 static void
5341 lpfc_post_init_setup(struct lpfc_hba *phba)
5342 {
5343         struct Scsi_Host  *shost;
5344         struct lpfc_adapter_event_header adapter_event;
5345
5346         /* Get the default values for Model Name and Description */
5347         lpfc_get_hba_model_desc(phba, phba->ModelName, phba->ModelDesc);
5348
5349         /*
5350          * hba setup may have changed the hba_queue_depth so we need to
5351          * adjust the value of can_queue.
5352          */
5353         shost = pci_get_drvdata(phba->pcidev);
5354         shost->can_queue = phba->cfg_hba_queue_depth - 10;
5355         if (phba->sli3_options & LPFC_SLI3_BG_ENABLED)
5356                 lpfc_setup_bg(phba, shost);
5357
5358         lpfc_host_attrib_init(shost);
5359
5360         if (phba->cfg_poll & DISABLE_FCP_RING_INT) {
5361                 spin_lock_irq(shost->host_lock);
5362                 lpfc_poll_start_timer(phba);
5363                 spin_unlock_irq(shost->host_lock);
5364         }
5365
5366         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5367                         "0428 Perform SCSI scan\n");
5368         /* Send board arrival event to upper layer */
5369         adapter_event.event_type = FC_REG_ADAPTER_EVENT;
5370         adapter_event.subcategory = LPFC_EVENT_ARRIVAL;
5371         fc_host_post_vendor_event(shost, fc_get_event_number(),
5372                                   sizeof(adapter_event),
5373                                   (char *) &adapter_event,
5374                                   LPFC_NL_VENDOR_ID);
5375         return;
5376 }
5377
5378 /**
5379  * lpfc_sli_pci_mem_setup - Setup SLI3 HBA PCI memory space.
5380  * @phba: pointer to lpfc hba data structure.
5381  *
5382  * This routine is invoked to set up the PCI device memory space for device
5383  * with SLI-3 interface spec.
5384  *
5385  * Return codes
5386  *      0 - successful
5387  *      other values - error
5388  **/
5389 static int
5390 lpfc_sli_pci_mem_setup(struct lpfc_hba *phba)
5391 {
5392         struct pci_dev *pdev;
5393         unsigned long bar0map_len, bar2map_len;
5394         int i, hbq_count;
5395         void *ptr;
5396         int error = -ENODEV;
5397
5398         /* Obtain PCI device reference */
5399         if (!phba->pcidev)
5400                 return error;
5401         else
5402                 pdev = phba->pcidev;
5403
5404         /* Set the device DMA mask size */
5405         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
5406          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
5407                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
5408                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
5409                         return error;
5410                 }
5411         }
5412
5413         /* Get the bus address of Bar0 and Bar2 and the number of bytes
5414          * required by each mapping.
5415          */
5416         phba->pci_bar0_map = pci_resource_start(pdev, 0);
5417         bar0map_len = pci_resource_len(pdev, 0);
5418
5419         phba->pci_bar2_map = pci_resource_start(pdev, 2);
5420         bar2map_len = pci_resource_len(pdev, 2);
5421
5422         /* Map HBA SLIM to a kernel virtual address. */
5423         phba->slim_memmap_p = ioremap(phba->pci_bar0_map, bar0map_len);
5424         if (!phba->slim_memmap_p) {
5425                 dev_printk(KERN_ERR, &pdev->dev,
5426                            "ioremap failed for SLIM memory.\n");
5427                 goto out;
5428         }
5429
5430         /* Map HBA Control Registers to a kernel virtual address. */
5431         phba->ctrl_regs_memmap_p = ioremap(phba->pci_bar2_map, bar2map_len);
5432         if (!phba->ctrl_regs_memmap_p) {
5433                 dev_printk(KERN_ERR, &pdev->dev,
5434                            "ioremap failed for HBA control registers.\n");
5435                 goto out_iounmap_slim;
5436         }
5437
5438         /* Allocate memory for SLI-2 structures */
5439         phba->slim2p.virt = dma_alloc_coherent(&pdev->dev,
5440                                                SLI2_SLIM_SIZE,
5441                                                &phba->slim2p.phys,
5442                                                GFP_KERNEL);
5443         if (!phba->slim2p.virt)
5444                 goto out_iounmap;
5445
5446         memset(phba->slim2p.virt, 0, SLI2_SLIM_SIZE);
5447         phba->mbox = phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, mbx);
5448         phba->mbox_ext = (phba->slim2p.virt +
5449                 offsetof(struct lpfc_sli2_slim, mbx_ext_words));
5450         phba->pcb = (phba->slim2p.virt + offsetof(struct lpfc_sli2_slim, pcb));
5451         phba->IOCBs = (phba->slim2p.virt +
5452                        offsetof(struct lpfc_sli2_slim, IOCBs));
5453
5454         phba->hbqslimp.virt = dma_alloc_coherent(&pdev->dev,
5455                                                  lpfc_sli_hbq_size(),
5456                                                  &phba->hbqslimp.phys,
5457                                                  GFP_KERNEL);
5458         if (!phba->hbqslimp.virt)
5459                 goto out_free_slim;
5460
5461         hbq_count = lpfc_sli_hbq_count();
5462         ptr = phba->hbqslimp.virt;
5463         for (i = 0; i < hbq_count; ++i) {
5464                 phba->hbqs[i].hbq_virt = ptr;
5465                 INIT_LIST_HEAD(&phba->hbqs[i].hbq_buffer_list);
5466                 ptr += (lpfc_hbq_defs[i]->entry_count *
5467                         sizeof(struct lpfc_hbq_entry));
5468         }
5469         phba->hbqs[LPFC_ELS_HBQ].hbq_alloc_buffer = lpfc_els_hbq_alloc;
5470         phba->hbqs[LPFC_ELS_HBQ].hbq_free_buffer = lpfc_els_hbq_free;
5471
5472         memset(phba->hbqslimp.virt, 0, lpfc_sli_hbq_size());
5473
5474         INIT_LIST_HEAD(&phba->rb_pend_list);
5475
5476         phba->MBslimaddr = phba->slim_memmap_p;
5477         phba->HAregaddr = phba->ctrl_regs_memmap_p + HA_REG_OFFSET;
5478         phba->CAregaddr = phba->ctrl_regs_memmap_p + CA_REG_OFFSET;
5479         phba->HSregaddr = phba->ctrl_regs_memmap_p + HS_REG_OFFSET;
5480         phba->HCregaddr = phba->ctrl_regs_memmap_p + HC_REG_OFFSET;
5481
5482         return 0;
5483
5484 out_free_slim:
5485         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5486                           phba->slim2p.virt, phba->slim2p.phys);
5487 out_iounmap:
5488         iounmap(phba->ctrl_regs_memmap_p);
5489 out_iounmap_slim:
5490         iounmap(phba->slim_memmap_p);
5491 out:
5492         return error;
5493 }
5494
5495 /**
5496  * lpfc_sli_pci_mem_unset - Unset SLI3 HBA PCI memory space.
5497  * @phba: pointer to lpfc hba data structure.
5498  *
5499  * This routine is invoked to unset the PCI device memory space for device
5500  * with SLI-3 interface spec.
5501  **/
5502 static void
5503 lpfc_sli_pci_mem_unset(struct lpfc_hba *phba)
5504 {
5505         struct pci_dev *pdev;
5506
5507         /* Obtain PCI device reference */
5508         if (!phba->pcidev)
5509                 return;
5510         else
5511                 pdev = phba->pcidev;
5512
5513         /* Free coherent DMA memory allocated */
5514         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
5515                           phba->hbqslimp.virt, phba->hbqslimp.phys);
5516         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
5517                           phba->slim2p.virt, phba->slim2p.phys);
5518
5519         /* I/O memory unmap */
5520         iounmap(phba->ctrl_regs_memmap_p);
5521         iounmap(phba->slim_memmap_p);
5522
5523         return;
5524 }
5525
5526 /**
5527  * lpfc_sli4_post_status_check - Wait for SLI4 POST done and check status
5528  * @phba: pointer to lpfc hba data structure.
5529  *
5530  * This routine is invoked to wait for SLI4 device Power On Self Test (POST)
5531  * done and check status.
5532  *
5533  * Return 0 if successful, otherwise -ENODEV.
5534  **/
5535 int
5536 lpfc_sli4_post_status_check(struct lpfc_hba *phba)
5537 {
5538         struct lpfc_register portsmphr_reg, uerrlo_reg, uerrhi_reg;
5539         struct lpfc_register reg_data;
5540         int i, port_error = 0;
5541         uint32_t if_type;
5542
5543         memset(&portsmphr_reg, 0, sizeof(portsmphr_reg));
5544         memset(&reg_data, 0, sizeof(reg_data));
5545         if (!phba->sli4_hba.PSMPHRregaddr)
5546                 return -ENODEV;
5547
5548         /* Wait up to 30 seconds for the SLI Port POST done and ready */
5549         for (i = 0; i < 3000; i++) {
5550                 if (lpfc_readl(phba->sli4_hba.PSMPHRregaddr,
5551                         &portsmphr_reg.word0) ||
5552                         (bf_get(lpfc_port_smphr_perr, &portsmphr_reg))) {
5553                         /* Port has a fatal POST error, break out */
5554                         port_error = -ENODEV;
5555                         break;
5556                 }
5557                 if (LPFC_POST_STAGE_PORT_READY ==
5558                     bf_get(lpfc_port_smphr_port_status, &portsmphr_reg))
5559                         break;
5560                 msleep(10);
5561         }
5562
5563         /*
5564          * If there was a port error during POST, then don't proceed with
5565          * other register reads as the data may not be valid.  Just exit.
5566          */
5567         if (port_error) {
5568                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5569                         "1408 Port Failed POST - portsmphr=0x%x, "
5570                         "perr=x%x, sfi=x%x, nip=x%x, ipc=x%x, scr1=x%x, "
5571                         "scr2=x%x, hscratch=x%x, pstatus=x%x\n",
5572                         portsmphr_reg.word0,
5573                         bf_get(lpfc_port_smphr_perr, &portsmphr_reg),
5574                         bf_get(lpfc_port_smphr_sfi, &portsmphr_reg),
5575                         bf_get(lpfc_port_smphr_nip, &portsmphr_reg),
5576                         bf_get(lpfc_port_smphr_ipc, &portsmphr_reg),
5577                         bf_get(lpfc_port_smphr_scr1, &portsmphr_reg),
5578                         bf_get(lpfc_port_smphr_scr2, &portsmphr_reg),
5579                         bf_get(lpfc_port_smphr_host_scratch, &portsmphr_reg),
5580                         bf_get(lpfc_port_smphr_port_status, &portsmphr_reg));
5581         } else {
5582                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
5583                                 "2534 Device Info: SLIFamily=0x%x, "
5584                                 "SLIRev=0x%x, IFType=0x%x, SLIHint_1=0x%x, "
5585                                 "SLIHint_2=0x%x, FT=0x%x\n",
5586                                 bf_get(lpfc_sli_intf_sli_family,
5587                                        &phba->sli4_hba.sli_intf),
5588                                 bf_get(lpfc_sli_intf_slirev,
5589                                        &phba->sli4_hba.sli_intf),
5590                                 bf_get(lpfc_sli_intf_if_type,
5591                                        &phba->sli4_hba.sli_intf),
5592                                 bf_get(lpfc_sli_intf_sli_hint1,
5593                                        &phba->sli4_hba.sli_intf),
5594                                 bf_get(lpfc_sli_intf_sli_hint2,
5595                                        &phba->sli4_hba.sli_intf),
5596                                 bf_get(lpfc_sli_intf_func_type,
5597                                        &phba->sli4_hba.sli_intf));
5598                 /*
5599                  * Check for other Port errors during the initialization
5600                  * process.  Fail the load if the port did not come up
5601                  * correctly.
5602                  */
5603                 if_type = bf_get(lpfc_sli_intf_if_type,
5604                                  &phba->sli4_hba.sli_intf);
5605                 switch (if_type) {
5606                 case LPFC_SLI_INTF_IF_TYPE_0:
5607                         phba->sli4_hba.ue_mask_lo =
5608                               readl(phba->sli4_hba.u.if_type0.UEMASKLOregaddr);
5609                         phba->sli4_hba.ue_mask_hi =
5610                               readl(phba->sli4_hba.u.if_type0.UEMASKHIregaddr);
5611                         uerrlo_reg.word0 =
5612                               readl(phba->sli4_hba.u.if_type0.UERRLOregaddr);
5613                         uerrhi_reg.word0 =
5614                                 readl(phba->sli4_hba.u.if_type0.UERRHIregaddr);
5615                         if ((~phba->sli4_hba.ue_mask_lo & uerrlo_reg.word0) ||
5616                             (~phba->sli4_hba.ue_mask_hi & uerrhi_reg.word0)) {
5617                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5618                                                 "1422 Unrecoverable Error "
5619                                                 "Detected during POST "
5620                                                 "uerr_lo_reg=0x%x, "
5621                                                 "uerr_hi_reg=0x%x, "
5622                                                 "ue_mask_lo_reg=0x%x, "
5623                                                 "ue_mask_hi_reg=0x%x\n",
5624                                                 uerrlo_reg.word0,
5625                                                 uerrhi_reg.word0,
5626                                                 phba->sli4_hba.ue_mask_lo,
5627                                                 phba->sli4_hba.ue_mask_hi);
5628                                 port_error = -ENODEV;
5629                         }
5630                         break;
5631                 case LPFC_SLI_INTF_IF_TYPE_2:
5632                         /* Final checks.  The port status should be clean. */
5633                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
5634                                 &reg_data.word0) ||
5635                                 (bf_get(lpfc_sliport_status_err, &reg_data) &&
5636                                  !bf_get(lpfc_sliport_status_rn, &reg_data))) {
5637                                 phba->work_status[0] =
5638                                         readl(phba->sli4_hba.u.if_type2.
5639                                               ERR1regaddr);
5640                                 phba->work_status[1] =
5641                                         readl(phba->sli4_hba.u.if_type2.
5642                                               ERR2regaddr);
5643                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
5644                                         "2888 Port Error Detected "
5645                                         "during POST: "
5646                                         "port status reg 0x%x, "
5647                                         "port_smphr reg 0x%x, "
5648                                         "error 1=0x%x, error 2=0x%x\n",
5649                                         reg_data.word0,
5650                                         portsmphr_reg.word0,
5651                                         phba->work_status[0],
5652                                         phba->work_status[1]);
5653                                 port_error = -ENODEV;
5654                         }
5655                         break;
5656                 case LPFC_SLI_INTF_IF_TYPE_1:
5657                 default:
5658                         break;
5659                 }
5660         }
5661         return port_error;
5662 }
5663
5664 /**
5665  * lpfc_sli4_bar0_register_memmap - Set up SLI4 BAR0 register memory map.
5666  * @phba: pointer to lpfc hba data structure.
5667  * @if_type:  The SLI4 interface type getting configured.
5668  *
5669  * This routine is invoked to set up SLI4 BAR0 PCI config space register
5670  * memory map.
5671  **/
5672 static void
5673 lpfc_sli4_bar0_register_memmap(struct lpfc_hba *phba, uint32_t if_type)
5674 {
5675         switch (if_type) {
5676         case LPFC_SLI_INTF_IF_TYPE_0:
5677                 phba->sli4_hba.u.if_type0.UERRLOregaddr =
5678                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_LO;
5679                 phba->sli4_hba.u.if_type0.UERRHIregaddr =
5680                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UERR_STATUS_HI;
5681                 phba->sli4_hba.u.if_type0.UEMASKLOregaddr =
5682                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_LO;
5683                 phba->sli4_hba.u.if_type0.UEMASKHIregaddr =
5684                         phba->sli4_hba.conf_regs_memmap_p + LPFC_UE_MASK_HI;
5685                 phba->sli4_hba.SLIINTFregaddr =
5686                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5687                 break;
5688         case LPFC_SLI_INTF_IF_TYPE_2:
5689                 phba->sli4_hba.u.if_type2.ERR1regaddr =
5690                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_ERR_1;
5691                 phba->sli4_hba.u.if_type2.ERR2regaddr =
5692                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_ERR_2;
5693                 phba->sli4_hba.u.if_type2.CTRLregaddr =
5694                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_CNTRL;
5695                 phba->sli4_hba.u.if_type2.STATUSregaddr =
5696                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_STATUS;
5697                 phba->sli4_hba.SLIINTFregaddr =
5698                         phba->sli4_hba.conf_regs_memmap_p + LPFC_SLI_INTF;
5699                 phba->sli4_hba.PSMPHRregaddr =
5700                      phba->sli4_hba.conf_regs_memmap_p + LPFC_SLIPORT_IF2_SMPHR;
5701                 phba->sli4_hba.RQDBregaddr =
5702                         phba->sli4_hba.conf_regs_memmap_p + LPFC_RQ_DOORBELL;
5703                 phba->sli4_hba.WQDBregaddr =
5704                         phba->sli4_hba.conf_regs_memmap_p + LPFC_WQ_DOORBELL;
5705                 phba->sli4_hba.EQCQDBregaddr =
5706                         phba->sli4_hba.conf_regs_memmap_p + LPFC_EQCQ_DOORBELL;
5707                 phba->sli4_hba.MQDBregaddr =
5708                         phba->sli4_hba.conf_regs_memmap_p + LPFC_MQ_DOORBELL;
5709                 phba->sli4_hba.BMBXregaddr =
5710                         phba->sli4_hba.conf_regs_memmap_p + LPFC_BMBX;
5711                 break;
5712         case LPFC_SLI_INTF_IF_TYPE_1:
5713         default:
5714                 dev_printk(KERN_ERR, &phba->pcidev->dev,
5715                            "FATAL - unsupported SLI4 interface type - %d\n",
5716                            if_type);
5717                 break;
5718         }
5719 }
5720
5721 /**
5722  * lpfc_sli4_bar1_register_memmap - Set up SLI4 BAR1 register memory map.
5723  * @phba: pointer to lpfc hba data structure.
5724  *
5725  * This routine is invoked to set up SLI4 BAR1 control status register (CSR)
5726  * memory map.
5727  **/
5728 static void
5729 lpfc_sli4_bar1_register_memmap(struct lpfc_hba *phba)
5730 {
5731         phba->sli4_hba.PSMPHRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5732                 LPFC_SLIPORT_IF0_SMPHR;
5733         phba->sli4_hba.ISRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5734                 LPFC_HST_ISR0;
5735         phba->sli4_hba.IMRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5736                 LPFC_HST_IMR0;
5737         phba->sli4_hba.ISCRregaddr = phba->sli4_hba.ctrl_regs_memmap_p +
5738                 LPFC_HST_ISCR0;
5739 }
5740
5741 /**
5742  * lpfc_sli4_bar2_register_memmap - Set up SLI4 BAR2 register memory map.
5743  * @phba: pointer to lpfc hba data structure.
5744  * @vf: virtual function number
5745  *
5746  * This routine is invoked to set up SLI4 BAR2 doorbell register memory map
5747  * based on the given viftual function number, @vf.
5748  *
5749  * Return 0 if successful, otherwise -ENODEV.
5750  **/
5751 static int
5752 lpfc_sli4_bar2_register_memmap(struct lpfc_hba *phba, uint32_t vf)
5753 {
5754         if (vf > LPFC_VIR_FUNC_MAX)
5755                 return -ENODEV;
5756
5757         phba->sli4_hba.RQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5758                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_RQ_DOORBELL);
5759         phba->sli4_hba.WQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5760                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_WQ_DOORBELL);
5761         phba->sli4_hba.EQCQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5762                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_EQCQ_DOORBELL);
5763         phba->sli4_hba.MQDBregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5764                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_MQ_DOORBELL);
5765         phba->sli4_hba.BMBXregaddr = (phba->sli4_hba.drbl_regs_memmap_p +
5766                                 vf * LPFC_VFR_PAGE_SIZE + LPFC_BMBX);
5767         return 0;
5768 }
5769
5770 /**
5771  * lpfc_create_bootstrap_mbox - Create the bootstrap mailbox
5772  * @phba: pointer to lpfc hba data structure.
5773  *
5774  * This routine is invoked to create the bootstrap mailbox
5775  * region consistent with the SLI-4 interface spec.  This
5776  * routine allocates all memory necessary to communicate
5777  * mailbox commands to the port and sets up all alignment
5778  * needs.  No locks are expected to be held when calling
5779  * this routine.
5780  *
5781  * Return codes
5782  *      0 - successful
5783  *      -ENOMEM - could not allocated memory.
5784  **/
5785 static int
5786 lpfc_create_bootstrap_mbox(struct lpfc_hba *phba)
5787 {
5788         uint32_t bmbx_size;
5789         struct lpfc_dmabuf *dmabuf;
5790         struct dma_address *dma_address;
5791         uint32_t pa_addr;
5792         uint64_t phys_addr;
5793
5794         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf), GFP_KERNEL);
5795         if (!dmabuf)
5796                 return -ENOMEM;
5797
5798         /*
5799          * The bootstrap mailbox region is comprised of 2 parts
5800          * plus an alignment restriction of 16 bytes.
5801          */
5802         bmbx_size = sizeof(struct lpfc_bmbx_create) + (LPFC_ALIGN_16_BYTE - 1);
5803         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
5804                                           bmbx_size,
5805                                           &dmabuf->phys,
5806                                           GFP_KERNEL);
5807         if (!dmabuf->virt) {
5808                 kfree(dmabuf);
5809                 return -ENOMEM;
5810         }
5811         memset(dmabuf->virt, 0, bmbx_size);
5812
5813         /*
5814          * Initialize the bootstrap mailbox pointers now so that the register
5815          * operations are simple later.  The mailbox dma address is required
5816          * to be 16-byte aligned.  Also align the virtual memory as each
5817          * maibox is copied into the bmbx mailbox region before issuing the
5818          * command to the port.
5819          */
5820         phba->sli4_hba.bmbx.dmabuf = dmabuf;
5821         phba->sli4_hba.bmbx.bmbx_size = bmbx_size;
5822
5823         phba->sli4_hba.bmbx.avirt = PTR_ALIGN(dmabuf->virt,
5824                                               LPFC_ALIGN_16_BYTE);
5825         phba->sli4_hba.bmbx.aphys = ALIGN(dmabuf->phys,
5826                                               LPFC_ALIGN_16_BYTE);
5827
5828         /*
5829          * Set the high and low physical addresses now.  The SLI4 alignment
5830          * requirement is 16 bytes and the mailbox is posted to the port
5831          * as two 30-bit addresses.  The other data is a bit marking whether
5832          * the 30-bit address is the high or low address.
5833          * Upcast bmbx aphys to 64bits so shift instruction compiles
5834          * clean on 32 bit machines.
5835          */
5836         dma_address = &phba->sli4_hba.bmbx.dma_address;
5837         phys_addr = (uint64_t)phba->sli4_hba.bmbx.aphys;
5838         pa_addr = (uint32_t) ((phys_addr >> 34) & 0x3fffffff);
5839         dma_address->addr_hi = (uint32_t) ((pa_addr << 2) |
5840                                            LPFC_BMBX_BIT1_ADDR_HI);
5841
5842         pa_addr = (uint32_t) ((phba->sli4_hba.bmbx.aphys >> 4) & 0x3fffffff);
5843         dma_address->addr_lo = (uint32_t) ((pa_addr << 2) |
5844                                            LPFC_BMBX_BIT1_ADDR_LO);
5845         return 0;
5846 }
5847
5848 /**
5849  * lpfc_destroy_bootstrap_mbox - Destroy all bootstrap mailbox resources
5850  * @phba: pointer to lpfc hba data structure.
5851  *
5852  * This routine is invoked to teardown the bootstrap mailbox
5853  * region and release all host resources. This routine requires
5854  * the caller to ensure all mailbox commands recovered, no
5855  * additional mailbox comands are sent, and interrupts are disabled
5856  * before calling this routine.
5857  *
5858  **/
5859 static void
5860 lpfc_destroy_bootstrap_mbox(struct lpfc_hba *phba)
5861 {
5862         dma_free_coherent(&phba->pcidev->dev,
5863                           phba->sli4_hba.bmbx.bmbx_size,
5864                           phba->sli4_hba.bmbx.dmabuf->virt,
5865                           phba->sli4_hba.bmbx.dmabuf->phys);
5866
5867         kfree(phba->sli4_hba.bmbx.dmabuf);
5868         memset(&phba->sli4_hba.bmbx, 0, sizeof(struct lpfc_bmbx));
5869 }
5870
5871 /**
5872  * lpfc_sli4_read_config - Get the config parameters.
5873  * @phba: pointer to lpfc hba data structure.
5874  *
5875  * This routine is invoked to read the configuration parameters from the HBA.
5876  * The configuration parameters are used to set the base and maximum values
5877  * for RPI's XRI's VPI's VFI's and FCFIs. These values also affect the resource
5878  * allocation for the port.
5879  *
5880  * Return codes
5881  *      0 - successful
5882  *      -ENOMEM - No available memory
5883  *      -EIO - The mailbox failed to complete successfully.
5884  **/
5885 static int
5886 lpfc_sli4_read_config(struct lpfc_hba *phba)
5887 {
5888         LPFC_MBOXQ_t *pmb;
5889         struct lpfc_mbx_read_config *rd_config;
5890         union  lpfc_sli4_cfg_shdr *shdr;
5891         uint32_t shdr_status, shdr_add_status;
5892         struct lpfc_mbx_get_func_cfg *get_func_cfg;
5893         struct lpfc_rsrc_desc_fcfcoe *desc;
5894         uint32_t desc_count;
5895         int length, i, rc = 0;
5896
5897         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
5898         if (!pmb) {
5899                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5900                                 "2011 Unable to allocate memory for issuing "
5901                                 "SLI_CONFIG_SPECIAL mailbox command\n");
5902                 return -ENOMEM;
5903         }
5904
5905         lpfc_read_config(phba, pmb);
5906
5907         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5908         if (rc != MBX_SUCCESS) {
5909                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
5910                         "2012 Mailbox failed , mbxCmd x%x "
5911                         "READ_CONFIG, mbxStatus x%x\n",
5912                         bf_get(lpfc_mqe_command, &pmb->u.mqe),
5913                         bf_get(lpfc_mqe_status, &pmb->u.mqe));
5914                 rc = -EIO;
5915         } else {
5916                 rd_config = &pmb->u.mqe.un.rd_config;
5917                 phba->sli4_hba.extents_in_use =
5918                         bf_get(lpfc_mbx_rd_conf_extnts_inuse, rd_config);
5919                 phba->sli4_hba.max_cfg_param.max_xri =
5920                         bf_get(lpfc_mbx_rd_conf_xri_count, rd_config);
5921                 phba->sli4_hba.max_cfg_param.xri_base =
5922                         bf_get(lpfc_mbx_rd_conf_xri_base, rd_config);
5923                 phba->sli4_hba.max_cfg_param.max_vpi =
5924                         bf_get(lpfc_mbx_rd_conf_vpi_count, rd_config);
5925                 phba->sli4_hba.max_cfg_param.vpi_base =
5926                         bf_get(lpfc_mbx_rd_conf_vpi_base, rd_config);
5927                 phba->sli4_hba.max_cfg_param.max_rpi =
5928                         bf_get(lpfc_mbx_rd_conf_rpi_count, rd_config);
5929                 phba->sli4_hba.max_cfg_param.rpi_base =
5930                         bf_get(lpfc_mbx_rd_conf_rpi_base, rd_config);
5931                 phba->sli4_hba.max_cfg_param.max_vfi =
5932                         bf_get(lpfc_mbx_rd_conf_vfi_count, rd_config);
5933                 phba->sli4_hba.max_cfg_param.vfi_base =
5934                         bf_get(lpfc_mbx_rd_conf_vfi_base, rd_config);
5935                 phba->sli4_hba.max_cfg_param.max_fcfi =
5936                         bf_get(lpfc_mbx_rd_conf_fcfi_count, rd_config);
5937                 phba->sli4_hba.max_cfg_param.max_eq =
5938                         bf_get(lpfc_mbx_rd_conf_eq_count, rd_config);
5939                 phba->sli4_hba.max_cfg_param.max_rq =
5940                         bf_get(lpfc_mbx_rd_conf_rq_count, rd_config);
5941                 phba->sli4_hba.max_cfg_param.max_wq =
5942                         bf_get(lpfc_mbx_rd_conf_wq_count, rd_config);
5943                 phba->sli4_hba.max_cfg_param.max_cq =
5944                         bf_get(lpfc_mbx_rd_conf_cq_count, rd_config);
5945                 phba->lmt = bf_get(lpfc_mbx_rd_conf_lmt, rd_config);
5946                 phba->sli4_hba.next_xri = phba->sli4_hba.max_cfg_param.xri_base;
5947                 phba->vpi_base = phba->sli4_hba.max_cfg_param.vpi_base;
5948                 phba->vfi_base = phba->sli4_hba.max_cfg_param.vfi_base;
5949                 phba->sli4_hba.next_rpi = phba->sli4_hba.max_cfg_param.rpi_base;
5950                 phba->max_vpi = (phba->sli4_hba.max_cfg_param.max_vpi > 0) ?
5951                                 (phba->sli4_hba.max_cfg_param.max_vpi - 1) : 0;
5952                 phba->max_vports = phba->max_vpi;
5953                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
5954                                 "2003 cfg params Extents? %d "
5955                                 "XRI(B:%d M:%d), "
5956                                 "VPI(B:%d M:%d) "
5957                                 "VFI(B:%d M:%d) "
5958                                 "RPI(B:%d M:%d) "
5959                                 "FCFI(Count:%d)\n",
5960                                 phba->sli4_hba.extents_in_use,
5961                                 phba->sli4_hba.max_cfg_param.xri_base,
5962                                 phba->sli4_hba.max_cfg_param.max_xri,
5963                                 phba->sli4_hba.max_cfg_param.vpi_base,
5964                                 phba->sli4_hba.max_cfg_param.max_vpi,
5965                                 phba->sli4_hba.max_cfg_param.vfi_base,
5966                                 phba->sli4_hba.max_cfg_param.max_vfi,
5967                                 phba->sli4_hba.max_cfg_param.rpi_base,
5968                                 phba->sli4_hba.max_cfg_param.max_rpi,
5969                                 phba->sli4_hba.max_cfg_param.max_fcfi);
5970         }
5971
5972         if (rc)
5973                 goto read_cfg_out;
5974
5975         /* Reset the DFT_HBA_Q_DEPTH to the max xri  */
5976         if (phba->cfg_hba_queue_depth >
5977                 (phba->sli4_hba.max_cfg_param.max_xri -
5978                         lpfc_sli4_get_els_iocb_cnt(phba)))
5979                 phba->cfg_hba_queue_depth =
5980                         phba->sli4_hba.max_cfg_param.max_xri -
5981                                 lpfc_sli4_get_els_iocb_cnt(phba);
5982
5983         if (bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf) !=
5984             LPFC_SLI_INTF_IF_TYPE_2)
5985                 goto read_cfg_out;
5986
5987         /* get the pf# and vf# for SLI4 if_type 2 port */
5988         length = (sizeof(struct lpfc_mbx_get_func_cfg) -
5989                   sizeof(struct lpfc_sli4_cfg_mhdr));
5990         lpfc_sli4_config(phba, pmb, LPFC_MBOX_SUBSYSTEM_COMMON,
5991                          LPFC_MBOX_OPCODE_GET_FUNCTION_CONFIG,
5992                          length, LPFC_SLI4_MBX_EMBED);
5993
5994         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
5995         shdr = (union lpfc_sli4_cfg_shdr *)
5996                                 &pmb->u.mqe.un.sli4_config.header.cfg_shdr;
5997         shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
5998         shdr_add_status = bf_get(lpfc_mbox_hdr_add_status, &shdr->response);
5999         if (rc || shdr_status || shdr_add_status) {
6000                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6001                                 "3026 Mailbox failed , mbxCmd x%x "
6002                                 "GET_FUNCTION_CONFIG, mbxStatus x%x\n",
6003                                 bf_get(lpfc_mqe_command, &pmb->u.mqe),
6004                                 bf_get(lpfc_mqe_status, &pmb->u.mqe));
6005                 rc = -EIO;
6006                 goto read_cfg_out;
6007         }
6008
6009         /* search for fc_fcoe resrouce descriptor */
6010         get_func_cfg = &pmb->u.mqe.un.get_func_cfg;
6011         desc_count = get_func_cfg->func_cfg.rsrc_desc_count;
6012
6013         for (i = 0; i < LPFC_RSRC_DESC_MAX_NUM; i++) {
6014                 desc = (struct lpfc_rsrc_desc_fcfcoe *)
6015                         &get_func_cfg->func_cfg.desc[i];
6016                 if (LPFC_RSRC_DESC_TYPE_FCFCOE ==
6017                     bf_get(lpfc_rsrc_desc_pcie_type, desc)) {
6018                         phba->sli4_hba.iov.pf_number =
6019                                 bf_get(lpfc_rsrc_desc_fcfcoe_pfnum, desc);
6020                         phba->sli4_hba.iov.vf_number =
6021                                 bf_get(lpfc_rsrc_desc_fcfcoe_vfnum, desc);
6022                         break;
6023                 }
6024         }
6025
6026         if (i < LPFC_RSRC_DESC_MAX_NUM)
6027                 lpfc_printf_log(phba, KERN_INFO, LOG_SLI,
6028                                 "3027 GET_FUNCTION_CONFIG: pf_number:%d, "
6029                                 "vf_number:%d\n", phba->sli4_hba.iov.pf_number,
6030                                 phba->sli4_hba.iov.vf_number);
6031         else {
6032                 lpfc_printf_log(phba, KERN_ERR, LOG_SLI,
6033                                 "3028 GET_FUNCTION_CONFIG: failed to find "
6034                                 "Resrouce Descriptor:x%x\n",
6035                                 LPFC_RSRC_DESC_TYPE_FCFCOE);
6036                 rc = -EIO;
6037         }
6038
6039 read_cfg_out:
6040         mempool_free(pmb, phba->mbox_mem_pool);
6041         return rc;
6042 }
6043
6044 /**
6045  * lpfc_setup_endian_order - Write endian order to an SLI4 if_type 0 port.
6046  * @phba: pointer to lpfc hba data structure.
6047  *
6048  * This routine is invoked to setup the port-side endian order when
6049  * the port if_type is 0.  This routine has no function for other
6050  * if_types.
6051  *
6052  * Return codes
6053  *      0 - successful
6054  *      -ENOMEM - No available memory
6055  *      -EIO - The mailbox failed to complete successfully.
6056  **/
6057 static int
6058 lpfc_setup_endian_order(struct lpfc_hba *phba)
6059 {
6060         LPFC_MBOXQ_t *mboxq;
6061         uint32_t if_type, rc = 0;
6062         uint32_t endian_mb_data[2] = {HOST_ENDIAN_LOW_WORD0,
6063                                       HOST_ENDIAN_HIGH_WORD1};
6064
6065         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6066         switch (if_type) {
6067         case LPFC_SLI_INTF_IF_TYPE_0:
6068                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6069                                                        GFP_KERNEL);
6070                 if (!mboxq) {
6071                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6072                                         "0492 Unable to allocate memory for "
6073                                         "issuing SLI_CONFIG_SPECIAL mailbox "
6074                                         "command\n");
6075                         return -ENOMEM;
6076                 }
6077
6078                 /*
6079                  * The SLI4_CONFIG_SPECIAL mailbox command requires the first
6080                  * two words to contain special data values and no other data.
6081                  */
6082                 memset(mboxq, 0, sizeof(LPFC_MBOXQ_t));
6083                 memcpy(&mboxq->u.mqe, &endian_mb_data, sizeof(endian_mb_data));
6084                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6085                 if (rc != MBX_SUCCESS) {
6086                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6087                                         "0493 SLI_CONFIG_SPECIAL mailbox "
6088                                         "failed with status x%x\n",
6089                                         rc);
6090                         rc = -EIO;
6091                 }
6092                 mempool_free(mboxq, phba->mbox_mem_pool);
6093                 break;
6094         case LPFC_SLI_INTF_IF_TYPE_2:
6095         case LPFC_SLI_INTF_IF_TYPE_1:
6096         default:
6097                 break;
6098         }
6099         return rc;
6100 }
6101
6102 /**
6103  * lpfc_sli4_queue_create - Create all the SLI4 queues
6104  * @phba: pointer to lpfc hba data structure.
6105  *
6106  * This routine is invoked to allocate all the SLI4 queues for the FCoE HBA
6107  * operation. For each SLI4 queue type, the parameters such as queue entry
6108  * count (queue depth) shall be taken from the module parameter. For now,
6109  * we just use some constant number as place holder.
6110  *
6111  * Return codes
6112  *      0 - successful
6113  *      -ENOMEM - No available memory
6114  *      -EIO - The mailbox failed to complete successfully.
6115  **/
6116 static int
6117 lpfc_sli4_queue_create(struct lpfc_hba *phba)
6118 {
6119         struct lpfc_queue *qdesc;
6120         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6121         int cfg_fcp_wq_count;
6122         int cfg_fcp_eq_count;
6123
6124         /*
6125          * Sanity check for confiugred queue parameters against the run-time
6126          * device parameters
6127          */
6128
6129         /* Sanity check on FCP fast-path WQ parameters */
6130         cfg_fcp_wq_count = phba->cfg_fcp_wq_count;
6131         if (cfg_fcp_wq_count >
6132             (phba->sli4_hba.max_cfg_param.max_wq - LPFC_SP_WQN_DEF)) {
6133                 cfg_fcp_wq_count = phba->sli4_hba.max_cfg_param.max_wq -
6134                                    LPFC_SP_WQN_DEF;
6135                 if (cfg_fcp_wq_count < LPFC_FP_WQN_MIN) {
6136                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6137                                         "2581 Not enough WQs (%d) from "
6138                                         "the pci function for supporting "
6139                                         "FCP WQs (%d)\n",
6140                                         phba->sli4_hba.max_cfg_param.max_wq,
6141                                         phba->cfg_fcp_wq_count);
6142                         goto out_error;
6143                 }
6144                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6145                                 "2582 Not enough WQs (%d) from the pci "
6146                                 "function for supporting the requested "
6147                                 "FCP WQs (%d), the actual FCP WQs can "
6148                                 "be supported: %d\n",
6149                                 phba->sli4_hba.max_cfg_param.max_wq,
6150                                 phba->cfg_fcp_wq_count, cfg_fcp_wq_count);
6151         }
6152         /* The actual number of FCP work queues adopted */
6153         phba->cfg_fcp_wq_count = cfg_fcp_wq_count;
6154
6155         /* Sanity check on FCP fast-path EQ parameters */
6156         cfg_fcp_eq_count = phba->cfg_fcp_eq_count;
6157         if (cfg_fcp_eq_count >
6158             (phba->sli4_hba.max_cfg_param.max_eq - LPFC_SP_EQN_DEF)) {
6159                 cfg_fcp_eq_count = phba->sli4_hba.max_cfg_param.max_eq -
6160                                    LPFC_SP_EQN_DEF;
6161                 if (cfg_fcp_eq_count < LPFC_FP_EQN_MIN) {
6162                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6163                                         "2574 Not enough EQs (%d) from the "
6164                                         "pci function for supporting FCP "
6165                                         "EQs (%d)\n",
6166                                         phba->sli4_hba.max_cfg_param.max_eq,
6167                                         phba->cfg_fcp_eq_count);
6168                         goto out_error;
6169                 }
6170                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6171                                 "2575 Not enough EQs (%d) from the pci "
6172                                 "function for supporting the requested "
6173                                 "FCP EQs (%d), the actual FCP EQs can "
6174                                 "be supported: %d\n",
6175                                 phba->sli4_hba.max_cfg_param.max_eq,
6176                                 phba->cfg_fcp_eq_count, cfg_fcp_eq_count);
6177         }
6178         /* It does not make sense to have more EQs than WQs */
6179         if (cfg_fcp_eq_count > phba->cfg_fcp_wq_count) {
6180                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
6181                                 "2593 The FCP EQ count(%d) cannot be greater "
6182                                 "than the FCP WQ count(%d), limiting the "
6183                                 "FCP EQ count to %d\n", cfg_fcp_eq_count,
6184                                 phba->cfg_fcp_wq_count,
6185                                 phba->cfg_fcp_wq_count);
6186                 cfg_fcp_eq_count = phba->cfg_fcp_wq_count;
6187         }
6188         /* The actual number of FCP event queues adopted */
6189         phba->cfg_fcp_eq_count = cfg_fcp_eq_count;
6190         /* The overall number of event queues used */
6191         phba->sli4_hba.cfg_eqn = phba->cfg_fcp_eq_count + LPFC_SP_EQN_DEF;
6192
6193         /*
6194          * Create Event Queues (EQs)
6195          */
6196
6197         /* Get EQ depth from module parameter, fake the default for now */
6198         phba->sli4_hba.eq_esize = LPFC_EQE_SIZE_4B;
6199         phba->sli4_hba.eq_ecount = LPFC_EQE_DEF_COUNT;
6200
6201         /* Create slow path event queue */
6202         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6203                                       phba->sli4_hba.eq_ecount);
6204         if (!qdesc) {
6205                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6206                                 "0496 Failed allocate slow-path EQ\n");
6207                 goto out_error;
6208         }
6209         phba->sli4_hba.sp_eq = qdesc;
6210
6211         /* Create fast-path FCP Event Queue(s) */
6212         phba->sli4_hba.fp_eq = kzalloc((sizeof(struct lpfc_queue *) *
6213                                phba->cfg_fcp_eq_count), GFP_KERNEL);
6214         if (!phba->sli4_hba.fp_eq) {
6215                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6216                                 "2576 Failed allocate memory for fast-path "
6217                                 "EQ record array\n");
6218                 goto out_free_sp_eq;
6219         }
6220         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6221                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.eq_esize,
6222                                               phba->sli4_hba.eq_ecount);
6223                 if (!qdesc) {
6224                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6225                                         "0497 Failed allocate fast-path EQ\n");
6226                         goto out_free_fp_eq;
6227                 }
6228                 phba->sli4_hba.fp_eq[fcp_eqidx] = qdesc;
6229         }
6230
6231         /*
6232          * Create Complete Queues (CQs)
6233          */
6234
6235         /* Get CQ depth from module parameter, fake the default for now */
6236         phba->sli4_hba.cq_esize = LPFC_CQE_SIZE;
6237         phba->sli4_hba.cq_ecount = LPFC_CQE_DEF_COUNT;
6238
6239         /* Create slow-path Mailbox Command Complete Queue */
6240         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6241                                       phba->sli4_hba.cq_ecount);
6242         if (!qdesc) {
6243                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6244                                 "0500 Failed allocate slow-path mailbox CQ\n");
6245                 goto out_free_fp_eq;
6246         }
6247         phba->sli4_hba.mbx_cq = qdesc;
6248
6249         /* Create slow-path ELS Complete Queue */
6250         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6251                                       phba->sli4_hba.cq_ecount);
6252         if (!qdesc) {
6253                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6254                                 "0501 Failed allocate slow-path ELS CQ\n");
6255                 goto out_free_mbx_cq;
6256         }
6257         phba->sli4_hba.els_cq = qdesc;
6258
6259
6260         /* Create fast-path FCP Completion Queue(s), one-to-one with EQs */
6261         phba->sli4_hba.fcp_cq = kzalloc((sizeof(struct lpfc_queue *) *
6262                                 phba->cfg_fcp_eq_count), GFP_KERNEL);
6263         if (!phba->sli4_hba.fcp_cq) {
6264                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6265                                 "2577 Failed allocate memory for fast-path "
6266                                 "CQ record array\n");
6267                 goto out_free_els_cq;
6268         }
6269         for (fcp_cqidx = 0; fcp_cqidx < phba->cfg_fcp_eq_count; fcp_cqidx++) {
6270                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.cq_esize,
6271                                               phba->sli4_hba.cq_ecount);
6272                 if (!qdesc) {
6273                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6274                                         "0499 Failed allocate fast-path FCP "
6275                                         "CQ (%d)\n", fcp_cqidx);
6276                         goto out_free_fcp_cq;
6277                 }
6278                 phba->sli4_hba.fcp_cq[fcp_cqidx] = qdesc;
6279         }
6280
6281         /* Create Mailbox Command Queue */
6282         phba->sli4_hba.mq_esize = LPFC_MQE_SIZE;
6283         phba->sli4_hba.mq_ecount = LPFC_MQE_DEF_COUNT;
6284
6285         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.mq_esize,
6286                                       phba->sli4_hba.mq_ecount);
6287         if (!qdesc) {
6288                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6289                                 "0505 Failed allocate slow-path MQ\n");
6290                 goto out_free_fcp_cq;
6291         }
6292         phba->sli4_hba.mbx_wq = qdesc;
6293
6294         /*
6295          * Create all the Work Queues (WQs)
6296          */
6297         phba->sli4_hba.wq_esize = LPFC_WQE_SIZE;
6298         phba->sli4_hba.wq_ecount = LPFC_WQE_DEF_COUNT;
6299
6300         /* Create slow-path ELS Work Queue */
6301         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6302                                       phba->sli4_hba.wq_ecount);
6303         if (!qdesc) {
6304                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6305                                 "0504 Failed allocate slow-path ELS WQ\n");
6306                 goto out_free_mbx_wq;
6307         }
6308         phba->sli4_hba.els_wq = qdesc;
6309
6310         /* Create fast-path FCP Work Queue(s) */
6311         phba->sli4_hba.fcp_wq = kzalloc((sizeof(struct lpfc_queue *) *
6312                                 phba->cfg_fcp_wq_count), GFP_KERNEL);
6313         if (!phba->sli4_hba.fcp_wq) {
6314                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6315                                 "2578 Failed allocate memory for fast-path "
6316                                 "WQ record array\n");
6317                 goto out_free_els_wq;
6318         }
6319         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6320                 qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.wq_esize,
6321                                               phba->sli4_hba.wq_ecount);
6322                 if (!qdesc) {
6323                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6324                                         "0503 Failed allocate fast-path FCP "
6325                                         "WQ (%d)\n", fcp_wqidx);
6326                         goto out_free_fcp_wq;
6327                 }
6328                 phba->sli4_hba.fcp_wq[fcp_wqidx] = qdesc;
6329         }
6330
6331         /*
6332          * Create Receive Queue (RQ)
6333          */
6334         phba->sli4_hba.rq_esize = LPFC_RQE_SIZE;
6335         phba->sli4_hba.rq_ecount = LPFC_RQE_DEF_COUNT;
6336
6337         /* Create Receive Queue for header */
6338         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6339                                       phba->sli4_hba.rq_ecount);
6340         if (!qdesc) {
6341                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6342                                 "0506 Failed allocate receive HRQ\n");
6343                 goto out_free_fcp_wq;
6344         }
6345         phba->sli4_hba.hdr_rq = qdesc;
6346
6347         /* Create Receive Queue for data */
6348         qdesc = lpfc_sli4_queue_alloc(phba, phba->sli4_hba.rq_esize,
6349                                       phba->sli4_hba.rq_ecount);
6350         if (!qdesc) {
6351                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6352                                 "0507 Failed allocate receive DRQ\n");
6353                 goto out_free_hdr_rq;
6354         }
6355         phba->sli4_hba.dat_rq = qdesc;
6356
6357         return 0;
6358
6359 out_free_hdr_rq:
6360         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6361         phba->sli4_hba.hdr_rq = NULL;
6362 out_free_fcp_wq:
6363         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--) {
6364                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_wqidx]);
6365                 phba->sli4_hba.fcp_wq[fcp_wqidx] = NULL;
6366         }
6367         kfree(phba->sli4_hba.fcp_wq);
6368 out_free_els_wq:
6369         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6370         phba->sli4_hba.els_wq = NULL;
6371 out_free_mbx_wq:
6372         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6373         phba->sli4_hba.mbx_wq = NULL;
6374 out_free_fcp_cq:
6375         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--) {
6376                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_cqidx]);
6377                 phba->sli4_hba.fcp_cq[fcp_cqidx] = NULL;
6378         }
6379         kfree(phba->sli4_hba.fcp_cq);
6380 out_free_els_cq:
6381         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6382         phba->sli4_hba.els_cq = NULL;
6383 out_free_mbx_cq:
6384         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6385         phba->sli4_hba.mbx_cq = NULL;
6386 out_free_fp_eq:
6387         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--) {
6388                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_eqidx]);
6389                 phba->sli4_hba.fp_eq[fcp_eqidx] = NULL;
6390         }
6391         kfree(phba->sli4_hba.fp_eq);
6392 out_free_sp_eq:
6393         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6394         phba->sli4_hba.sp_eq = NULL;
6395 out_error:
6396         return -ENOMEM;
6397 }
6398
6399 /**
6400  * lpfc_sli4_queue_destroy - Destroy all the SLI4 queues
6401  * @phba: pointer to lpfc hba data structure.
6402  *
6403  * This routine is invoked to release all the SLI4 queues with the FCoE HBA
6404  * operation.
6405  *
6406  * Return codes
6407  *      0 - successful
6408  *      -ENOMEM - No available memory
6409  *      -EIO - The mailbox failed to complete successfully.
6410  **/
6411 static void
6412 lpfc_sli4_queue_destroy(struct lpfc_hba *phba)
6413 {
6414         int fcp_qidx;
6415
6416         /* Release mailbox command work queue */
6417         lpfc_sli4_queue_free(phba->sli4_hba.mbx_wq);
6418         phba->sli4_hba.mbx_wq = NULL;
6419
6420         /* Release ELS work queue */
6421         lpfc_sli4_queue_free(phba->sli4_hba.els_wq);
6422         phba->sli4_hba.els_wq = NULL;
6423
6424         /* Release FCP work queue */
6425         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6426                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_wq[fcp_qidx]);
6427         kfree(phba->sli4_hba.fcp_wq);
6428         phba->sli4_hba.fcp_wq = NULL;
6429
6430         /* Release unsolicited receive queue */
6431         lpfc_sli4_queue_free(phba->sli4_hba.hdr_rq);
6432         phba->sli4_hba.hdr_rq = NULL;
6433         lpfc_sli4_queue_free(phba->sli4_hba.dat_rq);
6434         phba->sli4_hba.dat_rq = NULL;
6435
6436         /* Release ELS complete queue */
6437         lpfc_sli4_queue_free(phba->sli4_hba.els_cq);
6438         phba->sli4_hba.els_cq = NULL;
6439
6440         /* Release mailbox command complete queue */
6441         lpfc_sli4_queue_free(phba->sli4_hba.mbx_cq);
6442         phba->sli4_hba.mbx_cq = NULL;
6443
6444         /* Release FCP response complete queue */
6445         fcp_qidx = 0;
6446         do
6447                 lpfc_sli4_queue_free(phba->sli4_hba.fcp_cq[fcp_qidx]);
6448         while (++fcp_qidx < phba->cfg_fcp_eq_count);
6449         kfree(phba->sli4_hba.fcp_cq);
6450         phba->sli4_hba.fcp_cq = NULL;
6451
6452         /* Release fast-path event queue */
6453         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6454                 lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
6455         kfree(phba->sli4_hba.fp_eq);
6456         phba->sli4_hba.fp_eq = NULL;
6457
6458         /* Release slow-path event queue */
6459         lpfc_sli4_queue_free(phba->sli4_hba.sp_eq);
6460         phba->sli4_hba.sp_eq = NULL;
6461
6462         return;
6463 }
6464
6465 /**
6466  * lpfc_sli4_queue_setup - Set up all the SLI4 queues
6467  * @phba: pointer to lpfc hba data structure.
6468  *
6469  * This routine is invoked to set up all the SLI4 queues for the FCoE HBA
6470  * operation.
6471  *
6472  * Return codes
6473  *      0 - successful
6474  *      -ENOMEM - No available memory
6475  *      -EIO - The mailbox failed to complete successfully.
6476  **/
6477 int
6478 lpfc_sli4_queue_setup(struct lpfc_hba *phba)
6479 {
6480         int rc = -ENOMEM;
6481         int fcp_eqidx, fcp_cqidx, fcp_wqidx;
6482         int fcp_cq_index = 0;
6483
6484         /*
6485          * Set up Event Queues (EQs)
6486          */
6487
6488         /* Set up slow-path event queue */
6489         if (!phba->sli4_hba.sp_eq) {
6490                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6491                                 "0520 Slow-path EQ not allocated\n");
6492                 goto out_error;
6493         }
6494         rc = lpfc_eq_create(phba, phba->sli4_hba.sp_eq,
6495                             LPFC_SP_DEF_IMAX);
6496         if (rc) {
6497                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6498                                 "0521 Failed setup of slow-path EQ: "
6499                                 "rc = 0x%x\n", rc);
6500                 goto out_error;
6501         }
6502         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6503                         "2583 Slow-path EQ setup: queue-id=%d\n",
6504                         phba->sli4_hba.sp_eq->queue_id);
6505
6506         /* Set up fast-path event queue */
6507         for (fcp_eqidx = 0; fcp_eqidx < phba->cfg_fcp_eq_count; fcp_eqidx++) {
6508                 if (!phba->sli4_hba.fp_eq[fcp_eqidx]) {
6509                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6510                                         "0522 Fast-path EQ (%d) not "
6511                                         "allocated\n", fcp_eqidx);
6512                         goto out_destroy_fp_eq;
6513                 }
6514                 rc = lpfc_eq_create(phba, phba->sli4_hba.fp_eq[fcp_eqidx],
6515                                     phba->cfg_fcp_imax);
6516                 if (rc) {
6517                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6518                                         "0523 Failed setup of fast-path EQ "
6519                                         "(%d), rc = 0x%x\n", fcp_eqidx, rc);
6520                         goto out_destroy_fp_eq;
6521                 }
6522                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6523                                 "2584 Fast-path EQ setup: "
6524                                 "queue[%d]-id=%d\n", fcp_eqidx,
6525                                 phba->sli4_hba.fp_eq[fcp_eqidx]->queue_id);
6526         }
6527
6528         /*
6529          * Set up Complete Queues (CQs)
6530          */
6531
6532         /* Set up slow-path MBOX Complete Queue as the first CQ */
6533         if (!phba->sli4_hba.mbx_cq) {
6534                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6535                                 "0528 Mailbox CQ not allocated\n");
6536                 goto out_destroy_fp_eq;
6537         }
6538         rc = lpfc_cq_create(phba, phba->sli4_hba.mbx_cq, phba->sli4_hba.sp_eq,
6539                             LPFC_MCQ, LPFC_MBOX);
6540         if (rc) {
6541                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6542                                 "0529 Failed setup of slow-path mailbox CQ: "
6543                                 "rc = 0x%x\n", rc);
6544                 goto out_destroy_fp_eq;
6545         }
6546         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6547                         "2585 MBX CQ setup: cq-id=%d, parent eq-id=%d\n",
6548                         phba->sli4_hba.mbx_cq->queue_id,
6549                         phba->sli4_hba.sp_eq->queue_id);
6550
6551         /* Set up slow-path ELS Complete Queue */
6552         if (!phba->sli4_hba.els_cq) {
6553                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6554                                 "0530 ELS CQ not allocated\n");
6555                 goto out_destroy_mbx_cq;
6556         }
6557         rc = lpfc_cq_create(phba, phba->sli4_hba.els_cq, phba->sli4_hba.sp_eq,
6558                             LPFC_WCQ, LPFC_ELS);
6559         if (rc) {
6560                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6561                                 "0531 Failed setup of slow-path ELS CQ: "
6562                                 "rc = 0x%x\n", rc);
6563                 goto out_destroy_mbx_cq;
6564         }
6565         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6566                         "2586 ELS CQ setup: cq-id=%d, parent eq-id=%d\n",
6567                         phba->sli4_hba.els_cq->queue_id,
6568                         phba->sli4_hba.sp_eq->queue_id);
6569
6570         /* Set up fast-path FCP Response Complete Queue */
6571         fcp_cqidx = 0;
6572         do {
6573                 if (!phba->sli4_hba.fcp_cq[fcp_cqidx]) {
6574                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6575                                         "0526 Fast-path FCP CQ (%d) not "
6576                                         "allocated\n", fcp_cqidx);
6577                         goto out_destroy_fcp_cq;
6578                 }
6579                 if (phba->cfg_fcp_eq_count)
6580                         rc = lpfc_cq_create(phba,
6581                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6582                                             phba->sli4_hba.fp_eq[fcp_cqidx],
6583                                             LPFC_WCQ, LPFC_FCP);
6584                 else
6585                         rc = lpfc_cq_create(phba,
6586                                             phba->sli4_hba.fcp_cq[fcp_cqidx],
6587                                             phba->sli4_hba.sp_eq,
6588                                             LPFC_WCQ, LPFC_FCP);
6589                 if (rc) {
6590                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6591                                         "0527 Failed setup of fast-path FCP "
6592                                         "CQ (%d), rc = 0x%x\n", fcp_cqidx, rc);
6593                         goto out_destroy_fcp_cq;
6594                 }
6595                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6596                                 "2588 FCP CQ setup: cq[%d]-id=%d, "
6597                                 "parent %seq[%d]-id=%d\n",
6598                                 fcp_cqidx,
6599                                 phba->sli4_hba.fcp_cq[fcp_cqidx]->queue_id,
6600                                 (phba->cfg_fcp_eq_count) ? "" : "sp_",
6601                                 fcp_cqidx,
6602                                 (phba->cfg_fcp_eq_count) ?
6603                                    phba->sli4_hba.fp_eq[fcp_cqidx]->queue_id :
6604                                    phba->sli4_hba.sp_eq->queue_id);
6605         } while (++fcp_cqidx < phba->cfg_fcp_eq_count);
6606
6607         /*
6608          * Set up all the Work Queues (WQs)
6609          */
6610
6611         /* Set up Mailbox Command Queue */
6612         if (!phba->sli4_hba.mbx_wq) {
6613                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6614                                 "0538 Slow-path MQ not allocated\n");
6615                 goto out_destroy_fcp_cq;
6616         }
6617         rc = lpfc_mq_create(phba, phba->sli4_hba.mbx_wq,
6618                             phba->sli4_hba.mbx_cq, LPFC_MBOX);
6619         if (rc) {
6620                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6621                                 "0539 Failed setup of slow-path MQ: "
6622                                 "rc = 0x%x\n", rc);
6623                 goto out_destroy_fcp_cq;
6624         }
6625         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6626                         "2589 MBX MQ setup: wq-id=%d, parent cq-id=%d\n",
6627                         phba->sli4_hba.mbx_wq->queue_id,
6628                         phba->sli4_hba.mbx_cq->queue_id);
6629
6630         /* Set up slow-path ELS Work Queue */
6631         if (!phba->sli4_hba.els_wq) {
6632                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6633                                 "0536 Slow-path ELS WQ not allocated\n");
6634                 goto out_destroy_mbx_wq;
6635         }
6636         rc = lpfc_wq_create(phba, phba->sli4_hba.els_wq,
6637                             phba->sli4_hba.els_cq, LPFC_ELS);
6638         if (rc) {
6639                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6640                                 "0537 Failed setup of slow-path ELS WQ: "
6641                                 "rc = 0x%x\n", rc);
6642                 goto out_destroy_mbx_wq;
6643         }
6644         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6645                         "2590 ELS WQ setup: wq-id=%d, parent cq-id=%d\n",
6646                         phba->sli4_hba.els_wq->queue_id,
6647                         phba->sli4_hba.els_cq->queue_id);
6648
6649         /* Set up fast-path FCP Work Queue */
6650         for (fcp_wqidx = 0; fcp_wqidx < phba->cfg_fcp_wq_count; fcp_wqidx++) {
6651                 if (!phba->sli4_hba.fcp_wq[fcp_wqidx]) {
6652                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6653                                         "0534 Fast-path FCP WQ (%d) not "
6654                                         "allocated\n", fcp_wqidx);
6655                         goto out_destroy_fcp_wq;
6656                 }
6657                 rc = lpfc_wq_create(phba, phba->sli4_hba.fcp_wq[fcp_wqidx],
6658                                     phba->sli4_hba.fcp_cq[fcp_cq_index],
6659                                     LPFC_FCP);
6660                 if (rc) {
6661                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6662                                         "0535 Failed setup of fast-path FCP "
6663                                         "WQ (%d), rc = 0x%x\n", fcp_wqidx, rc);
6664                         goto out_destroy_fcp_wq;
6665                 }
6666                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6667                                 "2591 FCP WQ setup: wq[%d]-id=%d, "
6668                                 "parent cq[%d]-id=%d\n",
6669                                 fcp_wqidx,
6670                                 phba->sli4_hba.fcp_wq[fcp_wqidx]->queue_id,
6671                                 fcp_cq_index,
6672                                 phba->sli4_hba.fcp_cq[fcp_cq_index]->queue_id);
6673                 /* Round robin FCP Work Queue's Completion Queue assignment */
6674                 if (phba->cfg_fcp_eq_count)
6675                         fcp_cq_index = ((fcp_cq_index + 1) %
6676                                         phba->cfg_fcp_eq_count);
6677         }
6678
6679         /*
6680          * Create Receive Queue (RQ)
6681          */
6682         if (!phba->sli4_hba.hdr_rq || !phba->sli4_hba.dat_rq) {
6683                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6684                                 "0540 Receive Queue not allocated\n");
6685                 goto out_destroy_fcp_wq;
6686         }
6687         rc = lpfc_rq_create(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq,
6688                             phba->sli4_hba.els_cq, LPFC_USOL);
6689         if (rc) {
6690                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6691                                 "0541 Failed setup of Receive Queue: "
6692                                 "rc = 0x%x\n", rc);
6693                 goto out_destroy_fcp_wq;
6694         }
6695         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
6696                         "2592 USL RQ setup: hdr-rq-id=%d, dat-rq-id=%d "
6697                         "parent cq-id=%d\n",
6698                         phba->sli4_hba.hdr_rq->queue_id,
6699                         phba->sli4_hba.dat_rq->queue_id,
6700                         phba->sli4_hba.els_cq->queue_id);
6701         return 0;
6702
6703 out_destroy_fcp_wq:
6704         for (--fcp_wqidx; fcp_wqidx >= 0; fcp_wqidx--)
6705                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_wqidx]);
6706         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6707 out_destroy_mbx_wq:
6708         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6709 out_destroy_fcp_cq:
6710         for (--fcp_cqidx; fcp_cqidx >= 0; fcp_cqidx--)
6711                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_cqidx]);
6712         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6713 out_destroy_mbx_cq:
6714         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6715 out_destroy_fp_eq:
6716         for (--fcp_eqidx; fcp_eqidx >= 0; fcp_eqidx--)
6717                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_eqidx]);
6718         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6719 out_error:
6720         return rc;
6721 }
6722
6723 /**
6724  * lpfc_sli4_queue_unset - Unset all the SLI4 queues
6725  * @phba: pointer to lpfc hba data structure.
6726  *
6727  * This routine is invoked to unset all the SLI4 queues with the FCoE HBA
6728  * operation.
6729  *
6730  * Return codes
6731  *      0 - successful
6732  *      -ENOMEM - No available memory
6733  *      -EIO - The mailbox failed to complete successfully.
6734  **/
6735 void
6736 lpfc_sli4_queue_unset(struct lpfc_hba *phba)
6737 {
6738         int fcp_qidx;
6739
6740         /* Unset mailbox command work queue */
6741         lpfc_mq_destroy(phba, phba->sli4_hba.mbx_wq);
6742         /* Unset ELS work queue */
6743         lpfc_wq_destroy(phba, phba->sli4_hba.els_wq);
6744         /* Unset unsolicited receive queue */
6745         lpfc_rq_destroy(phba, phba->sli4_hba.hdr_rq, phba->sli4_hba.dat_rq);
6746         /* Unset FCP work queue */
6747         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_wq_count; fcp_qidx++)
6748                 lpfc_wq_destroy(phba, phba->sli4_hba.fcp_wq[fcp_qidx]);
6749         /* Unset mailbox command complete queue */
6750         lpfc_cq_destroy(phba, phba->sli4_hba.mbx_cq);
6751         /* Unset ELS complete queue */
6752         lpfc_cq_destroy(phba, phba->sli4_hba.els_cq);
6753         /* Unset FCP response complete queue */
6754         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6755                 lpfc_cq_destroy(phba, phba->sli4_hba.fcp_cq[fcp_qidx]);
6756         /* Unset fast-path event queue */
6757         for (fcp_qidx = 0; fcp_qidx < phba->cfg_fcp_eq_count; fcp_qidx++)
6758                 lpfc_eq_destroy(phba, phba->sli4_hba.fp_eq[fcp_qidx]);
6759         /* Unset slow-path event queue */
6760         lpfc_eq_destroy(phba, phba->sli4_hba.sp_eq);
6761 }
6762
6763 /**
6764  * lpfc_sli4_cq_event_pool_create - Create completion-queue event free pool
6765  * @phba: pointer to lpfc hba data structure.
6766  *
6767  * This routine is invoked to allocate and set up a pool of completion queue
6768  * events. The body of the completion queue event is a completion queue entry
6769  * CQE. For now, this pool is used for the interrupt service routine to queue
6770  * the following HBA completion queue events for the worker thread to process:
6771  *   - Mailbox asynchronous events
6772  *   - Receive queue completion unsolicited events
6773  * Later, this can be used for all the slow-path events.
6774  *
6775  * Return codes
6776  *      0 - successful
6777  *      -ENOMEM - No available memory
6778  **/
6779 static int
6780 lpfc_sli4_cq_event_pool_create(struct lpfc_hba *phba)
6781 {
6782         struct lpfc_cq_event *cq_event;
6783         int i;
6784
6785         for (i = 0; i < (4 * phba->sli4_hba.cq_ecount); i++) {
6786                 cq_event = kmalloc(sizeof(struct lpfc_cq_event), GFP_KERNEL);
6787                 if (!cq_event)
6788                         goto out_pool_create_fail;
6789                 list_add_tail(&cq_event->list,
6790                               &phba->sli4_hba.sp_cqe_event_pool);
6791         }
6792         return 0;
6793
6794 out_pool_create_fail:
6795         lpfc_sli4_cq_event_pool_destroy(phba);
6796         return -ENOMEM;
6797 }
6798
6799 /**
6800  * lpfc_sli4_cq_event_pool_destroy - Free completion-queue event free pool
6801  * @phba: pointer to lpfc hba data structure.
6802  *
6803  * This routine is invoked to free the pool of completion queue events at
6804  * driver unload time. Note that, it is the responsibility of the driver
6805  * cleanup routine to free all the outstanding completion-queue events
6806  * allocated from this pool back into the pool before invoking this routine
6807  * to destroy the pool.
6808  **/
6809 static void
6810 lpfc_sli4_cq_event_pool_destroy(struct lpfc_hba *phba)
6811 {
6812         struct lpfc_cq_event *cq_event, *next_cq_event;
6813
6814         list_for_each_entry_safe(cq_event, next_cq_event,
6815                                  &phba->sli4_hba.sp_cqe_event_pool, list) {
6816                 list_del(&cq_event->list);
6817                 kfree(cq_event);
6818         }
6819 }
6820
6821 /**
6822  * __lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6823  * @phba: pointer to lpfc hba data structure.
6824  *
6825  * This routine is the lock free version of the API invoked to allocate a
6826  * completion-queue event from the free pool.
6827  *
6828  * Return: Pointer to the newly allocated completion-queue event if successful
6829  *         NULL otherwise.
6830  **/
6831 struct lpfc_cq_event *
6832 __lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6833 {
6834         struct lpfc_cq_event *cq_event = NULL;
6835
6836         list_remove_head(&phba->sli4_hba.sp_cqe_event_pool, cq_event,
6837                          struct lpfc_cq_event, list);
6838         return cq_event;
6839 }
6840
6841 /**
6842  * lpfc_sli4_cq_event_alloc - Allocate a completion-queue event from free pool
6843  * @phba: pointer to lpfc hba data structure.
6844  *
6845  * This routine is the lock version of the API invoked to allocate a
6846  * completion-queue event from the free pool.
6847  *
6848  * Return: Pointer to the newly allocated completion-queue event if successful
6849  *         NULL otherwise.
6850  **/
6851 struct lpfc_cq_event *
6852 lpfc_sli4_cq_event_alloc(struct lpfc_hba *phba)
6853 {
6854         struct lpfc_cq_event *cq_event;
6855         unsigned long iflags;
6856
6857         spin_lock_irqsave(&phba->hbalock, iflags);
6858         cq_event = __lpfc_sli4_cq_event_alloc(phba);
6859         spin_unlock_irqrestore(&phba->hbalock, iflags);
6860         return cq_event;
6861 }
6862
6863 /**
6864  * __lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6865  * @phba: pointer to lpfc hba data structure.
6866  * @cq_event: pointer to the completion queue event to be freed.
6867  *
6868  * This routine is the lock free version of the API invoked to release a
6869  * completion-queue event back into the free pool.
6870  **/
6871 void
6872 __lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6873                              struct lpfc_cq_event *cq_event)
6874 {
6875         list_add_tail(&cq_event->list, &phba->sli4_hba.sp_cqe_event_pool);
6876 }
6877
6878 /**
6879  * lpfc_sli4_cq_event_release - Release a completion-queue event to free pool
6880  * @phba: pointer to lpfc hba data structure.
6881  * @cq_event: pointer to the completion queue event to be freed.
6882  *
6883  * This routine is the lock version of the API invoked to release a
6884  * completion-queue event back into the free pool.
6885  **/
6886 void
6887 lpfc_sli4_cq_event_release(struct lpfc_hba *phba,
6888                            struct lpfc_cq_event *cq_event)
6889 {
6890         unsigned long iflags;
6891         spin_lock_irqsave(&phba->hbalock, iflags);
6892         __lpfc_sli4_cq_event_release(phba, cq_event);
6893         spin_unlock_irqrestore(&phba->hbalock, iflags);
6894 }
6895
6896 /**
6897  * lpfc_sli4_cq_event_release_all - Release all cq events to the free pool
6898  * @phba: pointer to lpfc hba data structure.
6899  *
6900  * This routine is to free all the pending completion-queue events to the
6901  * back into the free pool for device reset.
6902  **/
6903 static void
6904 lpfc_sli4_cq_event_release_all(struct lpfc_hba *phba)
6905 {
6906         LIST_HEAD(cqelist);
6907         struct lpfc_cq_event *cqe;
6908         unsigned long iflags;
6909
6910         /* Retrieve all the pending WCQEs from pending WCQE lists */
6911         spin_lock_irqsave(&phba->hbalock, iflags);
6912         /* Pending FCP XRI abort events */
6913         list_splice_init(&phba->sli4_hba.sp_fcp_xri_aborted_work_queue,
6914                          &cqelist);
6915         /* Pending ELS XRI abort events */
6916         list_splice_init(&phba->sli4_hba.sp_els_xri_aborted_work_queue,
6917                          &cqelist);
6918         /* Pending asynnc events */
6919         list_splice_init(&phba->sli4_hba.sp_asynce_work_queue,
6920                          &cqelist);
6921         spin_unlock_irqrestore(&phba->hbalock, iflags);
6922
6923         while (!list_empty(&cqelist)) {
6924                 list_remove_head(&cqelist, cqe, struct lpfc_cq_event, list);
6925                 lpfc_sli4_cq_event_release(phba, cqe);
6926         }
6927 }
6928
6929 /**
6930  * lpfc_pci_function_reset - Reset pci function.
6931  * @phba: pointer to lpfc hba data structure.
6932  *
6933  * This routine is invoked to request a PCI function reset. It will destroys
6934  * all resources assigned to the PCI function which originates this request.
6935  *
6936  * Return codes
6937  *      0 - successful
6938  *      -ENOMEM - No available memory
6939  *      -EIO - The mailbox failed to complete successfully.
6940  **/
6941 int
6942 lpfc_pci_function_reset(struct lpfc_hba *phba)
6943 {
6944         LPFC_MBOXQ_t *mboxq;
6945         uint32_t rc = 0, if_type;
6946         uint32_t shdr_status, shdr_add_status;
6947         uint32_t rdy_chk, num_resets = 0, reset_again = 0;
6948         union lpfc_sli4_cfg_shdr *shdr;
6949         struct lpfc_register reg_data;
6950
6951         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
6952         switch (if_type) {
6953         case LPFC_SLI_INTF_IF_TYPE_0:
6954                 mboxq = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
6955                                                        GFP_KERNEL);
6956                 if (!mboxq) {
6957                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6958                                         "0494 Unable to allocate memory for "
6959                                         "issuing SLI_FUNCTION_RESET mailbox "
6960                                         "command\n");
6961                         return -ENOMEM;
6962                 }
6963
6964                 /* Setup PCI function reset mailbox-ioctl command */
6965                 lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
6966                                  LPFC_MBOX_OPCODE_FUNCTION_RESET, 0,
6967                                  LPFC_SLI4_MBX_EMBED);
6968                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
6969                 shdr = (union lpfc_sli4_cfg_shdr *)
6970                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
6971                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
6972                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
6973                                          &shdr->response);
6974                 if (rc != MBX_TIMEOUT)
6975                         mempool_free(mboxq, phba->mbox_mem_pool);
6976                 if (shdr_status || shdr_add_status || rc) {
6977                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
6978                                         "0495 SLI_FUNCTION_RESET mailbox "
6979                                         "failed with status x%x add_status x%x,"
6980                                         " mbx status x%x\n",
6981                                         shdr_status, shdr_add_status, rc);
6982                         rc = -ENXIO;
6983                 }
6984                 break;
6985         case LPFC_SLI_INTF_IF_TYPE_2:
6986                 for (num_resets = 0;
6987                      num_resets < MAX_IF_TYPE_2_RESETS;
6988                      num_resets++) {
6989                         reg_data.word0 = 0;
6990                         bf_set(lpfc_sliport_ctrl_end, &reg_data,
6991                                LPFC_SLIPORT_LITTLE_ENDIAN);
6992                         bf_set(lpfc_sliport_ctrl_ip, &reg_data,
6993                                LPFC_SLIPORT_INIT_PORT);
6994                         writel(reg_data.word0, phba->sli4_hba.u.if_type2.
6995                                CTRLregaddr);
6996
6997                         /*
6998                          * Poll the Port Status Register and wait for RDY for
6999                          * up to 10 seconds.  If the port doesn't respond, treat
7000                          * it as an error.  If the port responds with RN, start
7001                          * the loop again.
7002                          */
7003                         for (rdy_chk = 0; rdy_chk < 1000; rdy_chk++) {
7004                                 if (lpfc_readl(phba->sli4_hba.u.if_type2.
7005                                               STATUSregaddr, &reg_data.word0)) {
7006                                         rc = -ENODEV;
7007                                         break;
7008                                 }
7009                                 if (bf_get(lpfc_sliport_status_rdy, &reg_data))
7010                                         break;
7011                                 if (bf_get(lpfc_sliport_status_rn, &reg_data)) {
7012                                         reset_again++;
7013                                         break;
7014                                 }
7015                                 msleep(10);
7016                         }
7017
7018                         /*
7019                          * If the port responds to the init request with
7020                          * reset needed, delay for a bit and restart the loop.
7021                          */
7022                         if (reset_again) {
7023                                 msleep(10);
7024                                 reset_again = 0;
7025                                 continue;
7026                         }
7027
7028                         /* Detect any port errors. */
7029                         if (lpfc_readl(phba->sli4_hba.u.if_type2.STATUSregaddr,
7030                                  &reg_data.word0)) {
7031                                 rc = -ENODEV;
7032                                 break;
7033                         }
7034                         if ((bf_get(lpfc_sliport_status_err, &reg_data)) ||
7035                             (rdy_chk >= 1000)) {
7036                                 phba->work_status[0] = readl(
7037                                         phba->sli4_hba.u.if_type2.ERR1regaddr);
7038                                 phba->work_status[1] = readl(
7039                                         phba->sli4_hba.u.if_type2.ERR2regaddr);
7040                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7041                                         "2890 Port Error Detected "
7042                                         "during Port Reset: "
7043                                         "port status reg 0x%x, "
7044                                         "error 1=0x%x, error 2=0x%x\n",
7045                                         reg_data.word0,
7046                                         phba->work_status[0],
7047                                         phba->work_status[1]);
7048                                 rc = -ENODEV;
7049                         }
7050
7051                         /*
7052                          * Terminate the outer loop provided the Port indicated
7053                          * ready within 10 seconds.
7054                          */
7055                         if (rdy_chk < 1000)
7056                                 break;
7057                 }
7058                 /* delay driver action following IF_TYPE_2 function reset */
7059                 msleep(100);
7060                 break;
7061         case LPFC_SLI_INTF_IF_TYPE_1:
7062         default:
7063                 break;
7064         }
7065
7066         /* Catch the not-ready port failure after a port reset. */
7067         if (num_resets >= MAX_IF_TYPE_2_RESETS)
7068                 rc = -ENODEV;
7069
7070         return rc;
7071 }
7072
7073 /**
7074  * lpfc_sli4_send_nop_mbox_cmds - Send sli-4 nop mailbox commands
7075  * @phba: pointer to lpfc hba data structure.
7076  * @cnt: number of nop mailbox commands to send.
7077  *
7078  * This routine is invoked to send a number @cnt of NOP mailbox command and
7079  * wait for each command to complete.
7080  *
7081  * Return: the number of NOP mailbox command completed.
7082  **/
7083 static int
7084 lpfc_sli4_send_nop_mbox_cmds(struct lpfc_hba *phba, uint32_t cnt)
7085 {
7086         LPFC_MBOXQ_t *mboxq;
7087         int length, cmdsent;
7088         uint32_t mbox_tmo;
7089         uint32_t rc = 0;
7090         uint32_t shdr_status, shdr_add_status;
7091         union lpfc_sli4_cfg_shdr *shdr;
7092
7093         if (cnt == 0) {
7094                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7095                                 "2518 Requested to send 0 NOP mailbox cmd\n");
7096                 return cnt;
7097         }
7098
7099         mboxq = (LPFC_MBOXQ_t *)mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7100         if (!mboxq) {
7101                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7102                                 "2519 Unable to allocate memory for issuing "
7103                                 "NOP mailbox command\n");
7104                 return 0;
7105         }
7106
7107         /* Set up NOP SLI4_CONFIG mailbox-ioctl command */
7108         length = (sizeof(struct lpfc_mbx_nop) -
7109                   sizeof(struct lpfc_sli4_cfg_mhdr));
7110         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
7111                          LPFC_MBOX_OPCODE_NOP, length, LPFC_SLI4_MBX_EMBED);
7112
7113         mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG);
7114         for (cmdsent = 0; cmdsent < cnt; cmdsent++) {
7115                 if (!phba->sli4_hba.intr_enable)
7116                         rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
7117                 else
7118                         rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
7119                 if (rc == MBX_TIMEOUT)
7120                         break;
7121                 /* Check return status */
7122                 shdr = (union lpfc_sli4_cfg_shdr *)
7123                         &mboxq->u.mqe.un.sli4_config.header.cfg_shdr;
7124                 shdr_status = bf_get(lpfc_mbox_hdr_status, &shdr->response);
7125                 shdr_add_status = bf_get(lpfc_mbox_hdr_add_status,
7126                                          &shdr->response);
7127                 if (shdr_status || shdr_add_status || rc) {
7128                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7129                                         "2520 NOP mailbox command failed "
7130                                         "status x%x add_status x%x mbx "
7131                                         "status x%x\n", shdr_status,
7132                                         shdr_add_status, rc);
7133                         break;
7134                 }
7135         }
7136
7137         if (rc != MBX_TIMEOUT)
7138                 mempool_free(mboxq, phba->mbox_mem_pool);
7139
7140         return cmdsent;
7141 }
7142
7143 /**
7144  * lpfc_sli4_pci_mem_setup - Setup SLI4 HBA PCI memory space.
7145  * @phba: pointer to lpfc hba data structure.
7146  *
7147  * This routine is invoked to set up the PCI device memory space for device
7148  * with SLI-4 interface spec.
7149  *
7150  * Return codes
7151  *      0 - successful
7152  *      other values - error
7153  **/
7154 static int
7155 lpfc_sli4_pci_mem_setup(struct lpfc_hba *phba)
7156 {
7157         struct pci_dev *pdev;
7158         unsigned long bar0map_len, bar1map_len, bar2map_len;
7159         int error = -ENODEV;
7160         uint32_t if_type;
7161
7162         /* Obtain PCI device reference */
7163         if (!phba->pcidev)
7164                 return error;
7165         else
7166                 pdev = phba->pcidev;
7167
7168         /* Set the device DMA mask size */
7169         if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0
7170          || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(64)) != 0) {
7171                 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0
7172                  || pci_set_consistent_dma_mask(pdev,DMA_BIT_MASK(32)) != 0) {
7173                         return error;
7174                 }
7175         }
7176
7177         /*
7178          * The BARs and register set definitions and offset locations are
7179          * dependent on the if_type.
7180          */
7181         if (pci_read_config_dword(pdev, LPFC_SLI_INTF,
7182                                   &phba->sli4_hba.sli_intf.word0)) {
7183                 return error;
7184         }
7185
7186         /* There is no SLI3 failback for SLI4 devices. */
7187         if (bf_get(lpfc_sli_intf_valid, &phba->sli4_hba.sli_intf) !=
7188             LPFC_SLI_INTF_VALID) {
7189                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7190                                 "2894 SLI_INTF reg contents invalid "
7191                                 "sli_intf reg 0x%x\n",
7192                                 phba->sli4_hba.sli_intf.word0);
7193                 return error;
7194         }
7195
7196         if_type = bf_get(lpfc_sli_intf_if_type, &phba->sli4_hba.sli_intf);
7197         /*
7198          * Get the bus address of SLI4 device Bar regions and the
7199          * number of bytes required by each mapping. The mapping of the
7200          * particular PCI BARs regions is dependent on the type of
7201          * SLI4 device.
7202          */
7203         if (pci_resource_start(pdev, 0)) {
7204                 phba->pci_bar0_map = pci_resource_start(pdev, 0);
7205                 bar0map_len = pci_resource_len(pdev, 0);
7206
7207                 /*
7208                  * Map SLI4 PCI Config Space Register base to a kernel virtual
7209                  * addr
7210                  */
7211                 phba->sli4_hba.conf_regs_memmap_p =
7212                         ioremap(phba->pci_bar0_map, bar0map_len);
7213                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7214                         dev_printk(KERN_ERR, &pdev->dev,
7215                                    "ioremap failed for SLI4 PCI config "
7216                                    "registers.\n");
7217                         goto out;
7218                 }
7219                 /* Set up BAR0 PCI config space register memory map */
7220                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7221         } else {
7222                 phba->pci_bar0_map = pci_resource_start(pdev, 1);
7223                 bar0map_len = pci_resource_len(pdev, 1);
7224                 if (if_type == LPFC_SLI_INTF_IF_TYPE_2) {
7225                         dev_printk(KERN_ERR, &pdev->dev,
7226                            "FATAL - No BAR0 mapping for SLI4, if_type 2\n");
7227                         goto out;
7228                 }
7229                 phba->sli4_hba.conf_regs_memmap_p =
7230                                 ioremap(phba->pci_bar0_map, bar0map_len);
7231                 if (!phba->sli4_hba.conf_regs_memmap_p) {
7232                         dev_printk(KERN_ERR, &pdev->dev,
7233                                 "ioremap failed for SLI4 PCI config "
7234                                 "registers.\n");
7235                                 goto out;
7236                 }
7237                 lpfc_sli4_bar0_register_memmap(phba, if_type);
7238         }
7239
7240         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7241             (pci_resource_start(pdev, 2))) {
7242                 /*
7243                  * Map SLI4 if type 0 HBA Control Register base to a kernel
7244                  * virtual address and setup the registers.
7245                  */
7246                 phba->pci_bar1_map = pci_resource_start(pdev, 2);
7247                 bar1map_len = pci_resource_len(pdev, 2);
7248                 phba->sli4_hba.ctrl_regs_memmap_p =
7249                                 ioremap(phba->pci_bar1_map, bar1map_len);
7250                 if (!phba->sli4_hba.ctrl_regs_memmap_p) {
7251                         dev_printk(KERN_ERR, &pdev->dev,
7252                            "ioremap failed for SLI4 HBA control registers.\n");
7253                         goto out_iounmap_conf;
7254                 }
7255                 lpfc_sli4_bar1_register_memmap(phba);
7256         }
7257
7258         if ((if_type == LPFC_SLI_INTF_IF_TYPE_0) &&
7259             (pci_resource_start(pdev, 4))) {
7260                 /*
7261                  * Map SLI4 if type 0 HBA Doorbell Register base to a kernel
7262                  * virtual address and setup the registers.
7263                  */
7264                 phba->pci_bar2_map = pci_resource_start(pdev, 4);
7265                 bar2map_len = pci_resource_len(pdev, 4);
7266                 phba->sli4_hba.drbl_regs_memmap_p =
7267                                 ioremap(phba->pci_bar2_map, bar2map_len);
7268                 if (!phba->sli4_hba.drbl_regs_memmap_p) {
7269                         dev_printk(KERN_ERR, &pdev->dev,
7270                            "ioremap failed for SLI4 HBA doorbell registers.\n");
7271                         goto out_iounmap_ctrl;
7272                 }
7273                 error = lpfc_sli4_bar2_register_memmap(phba, LPFC_VF0);
7274                 if (error)
7275                         goto out_iounmap_all;
7276         }
7277
7278         return 0;
7279
7280 out_iounmap_all:
7281         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7282 out_iounmap_ctrl:
7283         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7284 out_iounmap_conf:
7285         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7286 out:
7287         return error;
7288 }
7289
7290 /**
7291  * lpfc_sli4_pci_mem_unset - Unset SLI4 HBA PCI memory space.
7292  * @phba: pointer to lpfc hba data structure.
7293  *
7294  * This routine is invoked to unset the PCI device memory space for device
7295  * with SLI-4 interface spec.
7296  **/
7297 static void
7298 lpfc_sli4_pci_mem_unset(struct lpfc_hba *phba)
7299 {
7300         struct pci_dev *pdev;
7301
7302         /* Obtain PCI device reference */
7303         if (!phba->pcidev)
7304                 return;
7305         else
7306                 pdev = phba->pcidev;
7307
7308         /* Free coherent DMA memory allocated */
7309
7310         /* Unmap I/O memory space */
7311         iounmap(phba->sli4_hba.drbl_regs_memmap_p);
7312         iounmap(phba->sli4_hba.ctrl_regs_memmap_p);
7313         iounmap(phba->sli4_hba.conf_regs_memmap_p);
7314
7315         return;
7316 }
7317
7318 /**
7319  * lpfc_sli_enable_msix - Enable MSI-X interrupt mode on SLI-3 device
7320  * @phba: pointer to lpfc hba data structure.
7321  *
7322  * This routine is invoked to enable the MSI-X interrupt vectors to device
7323  * with SLI-3 interface specs. The kernel function pci_enable_msix() is
7324  * called to enable the MSI-X vectors. Note that pci_enable_msix(), once
7325  * invoked, enables either all or nothing, depending on the current
7326  * availability of PCI vector resources. The device driver is responsible
7327  * for calling the individual request_irq() to register each MSI-X vector
7328  * with a interrupt handler, which is done in this function. Note that
7329  * later when device is unloading, the driver should always call free_irq()
7330  * on all MSI-X vectors it has done request_irq() on before calling
7331  * pci_disable_msix(). Failure to do so results in a BUG_ON() and a device
7332  * will be left with MSI-X enabled and leaks its vectors.
7333  *
7334  * Return codes
7335  *   0 - successful
7336  *   other values - error
7337  **/
7338 static int
7339 lpfc_sli_enable_msix(struct lpfc_hba *phba)
7340 {
7341         int rc, i;
7342         LPFC_MBOXQ_t *pmb;
7343
7344         /* Set up MSI-X multi-message vectors */
7345         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7346                 phba->msix_entries[i].entry = i;
7347
7348         /* Configure MSI-X capability structure */
7349         rc = pci_enable_msix(phba->pcidev, phba->msix_entries,
7350                                 ARRAY_SIZE(phba->msix_entries));
7351         if (rc) {
7352                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7353                                 "0420 PCI enable MSI-X failed (%d)\n", rc);
7354                 goto msi_fail_out;
7355         }
7356         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7357                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7358                                 "0477 MSI-X entry[%d]: vector=x%x "
7359                                 "message=%d\n", i,
7360                                 phba->msix_entries[i].vector,
7361                                 phba->msix_entries[i].entry);
7362         /*
7363          * Assign MSI-X vectors to interrupt handlers
7364          */
7365
7366         /* vector-0 is associated to slow-path handler */
7367         rc = request_irq(phba->msix_entries[0].vector,
7368                          &lpfc_sli_sp_intr_handler, IRQF_SHARED,
7369                          LPFC_SP_DRIVER_HANDLER_NAME, phba);
7370         if (rc) {
7371                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7372                                 "0421 MSI-X slow-path request_irq failed "
7373                                 "(%d)\n", rc);
7374                 goto msi_fail_out;
7375         }
7376
7377         /* vector-1 is associated to fast-path handler */
7378         rc = request_irq(phba->msix_entries[1].vector,
7379                          &lpfc_sli_fp_intr_handler, IRQF_SHARED,
7380                          LPFC_FP_DRIVER_HANDLER_NAME, phba);
7381
7382         if (rc) {
7383                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7384                                 "0429 MSI-X fast-path request_irq failed "
7385                                 "(%d)\n", rc);
7386                 goto irq_fail_out;
7387         }
7388
7389         /*
7390          * Configure HBA MSI-X attention conditions to messages
7391          */
7392         pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
7393
7394         if (!pmb) {
7395                 rc = -ENOMEM;
7396                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7397                                 "0474 Unable to allocate memory for issuing "
7398                                 "MBOX_CONFIG_MSI command\n");
7399                 goto mem_fail_out;
7400         }
7401         rc = lpfc_config_msi(phba, pmb);
7402         if (rc)
7403                 goto mbx_fail_out;
7404         rc = lpfc_sli_issue_mbox(phba, pmb, MBX_POLL);
7405         if (rc != MBX_SUCCESS) {
7406                 lpfc_printf_log(phba, KERN_WARNING, LOG_MBOX,
7407                                 "0351 Config MSI mailbox command failed, "
7408                                 "mbxCmd x%x, mbxStatus x%x\n",
7409                                 pmb->u.mb.mbxCommand, pmb->u.mb.mbxStatus);
7410                 goto mbx_fail_out;
7411         }
7412
7413         /* Free memory allocated for mailbox command */
7414         mempool_free(pmb, phba->mbox_mem_pool);
7415         return rc;
7416
7417 mbx_fail_out:
7418         /* Free memory allocated for mailbox command */
7419         mempool_free(pmb, phba->mbox_mem_pool);
7420
7421 mem_fail_out:
7422         /* free the irq already requested */
7423         free_irq(phba->msix_entries[1].vector, phba);
7424
7425 irq_fail_out:
7426         /* free the irq already requested */
7427         free_irq(phba->msix_entries[0].vector, phba);
7428
7429 msi_fail_out:
7430         /* Unconfigure MSI-X capability structure */
7431         pci_disable_msix(phba->pcidev);
7432         return rc;
7433 }
7434
7435 /**
7436  * lpfc_sli_disable_msix - Disable MSI-X interrupt mode on SLI-3 device.
7437  * @phba: pointer to lpfc hba data structure.
7438  *
7439  * This routine is invoked to release the MSI-X vectors and then disable the
7440  * MSI-X interrupt mode to device with SLI-3 interface spec.
7441  **/
7442 static void
7443 lpfc_sli_disable_msix(struct lpfc_hba *phba)
7444 {
7445         int i;
7446
7447         /* Free up MSI-X multi-message vectors */
7448         for (i = 0; i < LPFC_MSIX_VECTORS; i++)
7449                 free_irq(phba->msix_entries[i].vector, phba);
7450         /* Disable MSI-X */
7451         pci_disable_msix(phba->pcidev);
7452
7453         return;
7454 }
7455
7456 /**
7457  * lpfc_sli_enable_msi - Enable MSI interrupt mode on SLI-3 device.
7458  * @phba: pointer to lpfc hba data structure.
7459  *
7460  * This routine is invoked to enable the MSI interrupt mode to device with
7461  * SLI-3 interface spec. The kernel function pci_enable_msi() is called to
7462  * enable the MSI vector. The device driver is responsible for calling the
7463  * request_irq() to register MSI vector with a interrupt the handler, which
7464  * is done in this function.
7465  *
7466  * Return codes
7467  *      0 - successful
7468  *      other values - error
7469  */
7470 static int
7471 lpfc_sli_enable_msi(struct lpfc_hba *phba)
7472 {
7473         int rc;
7474
7475         rc = pci_enable_msi(phba->pcidev);
7476         if (!rc)
7477                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7478                                 "0462 PCI enable MSI mode success.\n");
7479         else {
7480                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7481                                 "0471 PCI enable MSI mode failed (%d)\n", rc);
7482                 return rc;
7483         }
7484
7485         rc = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7486                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7487         if (rc) {
7488                 pci_disable_msi(phba->pcidev);
7489                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7490                                 "0478 MSI request_irq failed (%d)\n", rc);
7491         }
7492         return rc;
7493 }
7494
7495 /**
7496  * lpfc_sli_disable_msi - Disable MSI interrupt mode to SLI-3 device.
7497  * @phba: pointer to lpfc hba data structure.
7498  *
7499  * This routine is invoked to disable the MSI interrupt mode to device with
7500  * SLI-3 interface spec. The driver calls free_irq() on MSI vector it has
7501  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7502  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7503  * its vector.
7504  */
7505 static void
7506 lpfc_sli_disable_msi(struct lpfc_hba *phba)
7507 {
7508         free_irq(phba->pcidev->irq, phba);
7509         pci_disable_msi(phba->pcidev);
7510         return;
7511 }
7512
7513 /**
7514  * lpfc_sli_enable_intr - Enable device interrupt to SLI-3 device.
7515  * @phba: pointer to lpfc hba data structure.
7516  *
7517  * This routine is invoked to enable device interrupt and associate driver's
7518  * interrupt handler(s) to interrupt vector(s) to device with SLI-3 interface
7519  * spec. Depends on the interrupt mode configured to the driver, the driver
7520  * will try to fallback from the configured interrupt mode to an interrupt
7521  * mode which is supported by the platform, kernel, and device in the order
7522  * of:
7523  * MSI-X -> MSI -> IRQ.
7524  *
7525  * Return codes
7526  *   0 - successful
7527  *   other values - error
7528  **/
7529 static uint32_t
7530 lpfc_sli_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7531 {
7532         uint32_t intr_mode = LPFC_INTR_ERROR;
7533         int retval;
7534
7535         if (cfg_mode == 2) {
7536                 /* Need to issue conf_port mbox cmd before conf_msi mbox cmd */
7537                 retval = lpfc_sli_config_port(phba, LPFC_SLI_REV3);
7538                 if (!retval) {
7539                         /* Now, try to enable MSI-X interrupt mode */
7540                         retval = lpfc_sli_enable_msix(phba);
7541                         if (!retval) {
7542                                 /* Indicate initialization to MSI-X mode */
7543                                 phba->intr_type = MSIX;
7544                                 intr_mode = 2;
7545                         }
7546                 }
7547         }
7548
7549         /* Fallback to MSI if MSI-X initialization failed */
7550         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7551                 retval = lpfc_sli_enable_msi(phba);
7552                 if (!retval) {
7553                         /* Indicate initialization to MSI mode */
7554                         phba->intr_type = MSI;
7555                         intr_mode = 1;
7556                 }
7557         }
7558
7559         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7560         if (phba->intr_type == NONE) {
7561                 retval = request_irq(phba->pcidev->irq, lpfc_sli_intr_handler,
7562                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7563                 if (!retval) {
7564                         /* Indicate initialization to INTx mode */
7565                         phba->intr_type = INTx;
7566                         intr_mode = 0;
7567                 }
7568         }
7569         return intr_mode;
7570 }
7571
7572 /**
7573  * lpfc_sli_disable_intr - Disable device interrupt to SLI-3 device.
7574  * @phba: pointer to lpfc hba data structure.
7575  *
7576  * This routine is invoked to disable device interrupt and disassociate the
7577  * driver's interrupt handler(s) from interrupt vector(s) to device with
7578  * SLI-3 interface spec. Depending on the interrupt mode, the driver will
7579  * release the interrupt vector(s) for the message signaled interrupt.
7580  **/
7581 static void
7582 lpfc_sli_disable_intr(struct lpfc_hba *phba)
7583 {
7584         /* Disable the currently initialized interrupt mode */
7585         if (phba->intr_type == MSIX)
7586                 lpfc_sli_disable_msix(phba);
7587         else if (phba->intr_type == MSI)
7588                 lpfc_sli_disable_msi(phba);
7589         else if (phba->intr_type == INTx)
7590                 free_irq(phba->pcidev->irq, phba);
7591
7592         /* Reset interrupt management states */
7593         phba->intr_type = NONE;
7594         phba->sli.slistat.sli_intr = 0;
7595
7596         return;
7597 }
7598
7599 /**
7600  * lpfc_sli4_enable_msix - Enable MSI-X interrupt mode to SLI-4 device
7601  * @phba: pointer to lpfc hba data structure.
7602  *
7603  * This routine is invoked to enable the MSI-X interrupt vectors to device
7604  * with SLI-4 interface spec. The kernel function pci_enable_msix() is called
7605  * to enable the MSI-X vectors. Note that pci_enable_msix(), once invoked,
7606  * enables either all or nothing, depending on the current availability of
7607  * PCI vector resources. The device driver is responsible for calling the
7608  * individual request_irq() to register each MSI-X vector with a interrupt
7609  * handler, which is done in this function. Note that later when device is
7610  * unloading, the driver should always call free_irq() on all MSI-X vectors
7611  * it has done request_irq() on before calling pci_disable_msix(). Failure
7612  * to do so results in a BUG_ON() and a device will be left with MSI-X
7613  * enabled and leaks its vectors.
7614  *
7615  * Return codes
7616  * 0 - successful
7617  * other values - error
7618  **/
7619 static int
7620 lpfc_sli4_enable_msix(struct lpfc_hba *phba)
7621 {
7622         int vectors, rc, index;
7623
7624         /* Set up MSI-X multi-message vectors */
7625         for (index = 0; index < phba->sli4_hba.cfg_eqn; index++)
7626                 phba->sli4_hba.msix_entries[index].entry = index;
7627
7628         /* Configure MSI-X capability structure */
7629         vectors = phba->sli4_hba.cfg_eqn;
7630 enable_msix_vectors:
7631         rc = pci_enable_msix(phba->pcidev, phba->sli4_hba.msix_entries,
7632                              vectors);
7633         if (rc > 1) {
7634                 vectors = rc;
7635                 goto enable_msix_vectors;
7636         } else if (rc) {
7637                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7638                                 "0484 PCI enable MSI-X failed (%d)\n", rc);
7639                 goto msi_fail_out;
7640         }
7641
7642         /* Log MSI-X vector assignment */
7643         for (index = 0; index < vectors; index++)
7644                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7645                                 "0489 MSI-X entry[%d]: vector=x%x "
7646                                 "message=%d\n", index,
7647                                 phba->sli4_hba.msix_entries[index].vector,
7648                                 phba->sli4_hba.msix_entries[index].entry);
7649         /*
7650          * Assign MSI-X vectors to interrupt handlers
7651          */
7652         if (vectors > 1)
7653                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7654                                  &lpfc_sli4_sp_intr_handler, IRQF_SHARED,
7655                                  LPFC_SP_DRIVER_HANDLER_NAME, phba);
7656         else
7657                 /* All Interrupts need to be handled by one EQ */
7658                 rc = request_irq(phba->sli4_hba.msix_entries[0].vector,
7659                                  &lpfc_sli4_intr_handler, IRQF_SHARED,
7660                                  LPFC_DRIVER_NAME, phba);
7661         if (rc) {
7662                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7663                                 "0485 MSI-X slow-path request_irq failed "
7664                                 "(%d)\n", rc);
7665                 goto msi_fail_out;
7666         }
7667
7668         /* The rest of the vector(s) are associated to fast-path handler(s) */
7669         for (index = 1; index < vectors; index++) {
7670                 phba->sli4_hba.fcp_eq_hdl[index - 1].idx = index - 1;
7671                 phba->sli4_hba.fcp_eq_hdl[index - 1].phba = phba;
7672                 rc = request_irq(phba->sli4_hba.msix_entries[index].vector,
7673                                  &lpfc_sli4_fp_intr_handler, IRQF_SHARED,
7674                                  LPFC_FP_DRIVER_HANDLER_NAME,
7675                                  &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7676                 if (rc) {
7677                         lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7678                                         "0486 MSI-X fast-path (%d) "
7679                                         "request_irq failed (%d)\n", index, rc);
7680                         goto cfg_fail_out;
7681                 }
7682         }
7683         phba->sli4_hba.msix_vec_nr = vectors;
7684
7685         return rc;
7686
7687 cfg_fail_out:
7688         /* free the irq already requested */
7689         for (--index; index >= 1; index--)
7690                 free_irq(phba->sli4_hba.msix_entries[index - 1].vector,
7691                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7692
7693         /* free the irq already requested */
7694         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7695
7696 msi_fail_out:
7697         /* Unconfigure MSI-X capability structure */
7698         pci_disable_msix(phba->pcidev);
7699         return rc;
7700 }
7701
7702 /**
7703  * lpfc_sli4_disable_msix - Disable MSI-X interrupt mode to SLI-4 device
7704  * @phba: pointer to lpfc hba data structure.
7705  *
7706  * This routine is invoked to release the MSI-X vectors and then disable the
7707  * MSI-X interrupt mode to device with SLI-4 interface spec.
7708  **/
7709 static void
7710 lpfc_sli4_disable_msix(struct lpfc_hba *phba)
7711 {
7712         int index;
7713
7714         /* Free up MSI-X multi-message vectors */
7715         free_irq(phba->sli4_hba.msix_entries[0].vector, phba);
7716
7717         for (index = 1; index < phba->sli4_hba.msix_vec_nr; index++)
7718                 free_irq(phba->sli4_hba.msix_entries[index].vector,
7719                          &phba->sli4_hba.fcp_eq_hdl[index - 1]);
7720
7721         /* Disable MSI-X */
7722         pci_disable_msix(phba->pcidev);
7723
7724         return;
7725 }
7726
7727 /**
7728  * lpfc_sli4_enable_msi - Enable MSI interrupt mode to SLI-4 device
7729  * @phba: pointer to lpfc hba data structure.
7730  *
7731  * This routine is invoked to enable the MSI interrupt mode to device with
7732  * SLI-4 interface spec. The kernel function pci_enable_msi() is called
7733  * to enable the MSI vector. The device driver is responsible for calling
7734  * the request_irq() to register MSI vector with a interrupt the handler,
7735  * which is done in this function.
7736  *
7737  * Return codes
7738  *      0 - successful
7739  *      other values - error
7740  **/
7741 static int
7742 lpfc_sli4_enable_msi(struct lpfc_hba *phba)
7743 {
7744         int rc, index;
7745
7746         rc = pci_enable_msi(phba->pcidev);
7747         if (!rc)
7748                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7749                                 "0487 PCI enable MSI mode success.\n");
7750         else {
7751                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
7752                                 "0488 PCI enable MSI mode failed (%d)\n", rc);
7753                 return rc;
7754         }
7755
7756         rc = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7757                          IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7758         if (rc) {
7759                 pci_disable_msi(phba->pcidev);
7760                 lpfc_printf_log(phba, KERN_WARNING, LOG_INIT,
7761                                 "0490 MSI request_irq failed (%d)\n", rc);
7762                 return rc;
7763         }
7764
7765         for (index = 0; index < phba->cfg_fcp_eq_count; index++) {
7766                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7767                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7768         }
7769
7770         return 0;
7771 }
7772
7773 /**
7774  * lpfc_sli4_disable_msi - Disable MSI interrupt mode to SLI-4 device
7775  * @phba: pointer to lpfc hba data structure.
7776  *
7777  * This routine is invoked to disable the MSI interrupt mode to device with
7778  * SLI-4 interface spec. The driver calls free_irq() on MSI vector it has
7779  * done request_irq() on before calling pci_disable_msi(). Failure to do so
7780  * results in a BUG_ON() and a device will be left with MSI enabled and leaks
7781  * its vector.
7782  **/
7783 static void
7784 lpfc_sli4_disable_msi(struct lpfc_hba *phba)
7785 {
7786         free_irq(phba->pcidev->irq, phba);
7787         pci_disable_msi(phba->pcidev);
7788         return;
7789 }
7790
7791 /**
7792  * lpfc_sli4_enable_intr - Enable device interrupt to SLI-4 device
7793  * @phba: pointer to lpfc hba data structure.
7794  *
7795  * This routine is invoked to enable device interrupt and associate driver's
7796  * interrupt handler(s) to interrupt vector(s) to device with SLI-4
7797  * interface spec. Depends on the interrupt mode configured to the driver,
7798  * the driver will try to fallback from the configured interrupt mode to an
7799  * interrupt mode which is supported by the platform, kernel, and device in
7800  * the order of:
7801  * MSI-X -> MSI -> IRQ.
7802  *
7803  * Return codes
7804  *      0 - successful
7805  *      other values - error
7806  **/
7807 static uint32_t
7808 lpfc_sli4_enable_intr(struct lpfc_hba *phba, uint32_t cfg_mode)
7809 {
7810         uint32_t intr_mode = LPFC_INTR_ERROR;
7811         int retval, index;
7812
7813         if (cfg_mode == 2) {
7814                 /* Preparation before conf_msi mbox cmd */
7815                 retval = 0;
7816                 if (!retval) {
7817                         /* Now, try to enable MSI-X interrupt mode */
7818                         retval = lpfc_sli4_enable_msix(phba);
7819                         if (!retval) {
7820                                 /* Indicate initialization to MSI-X mode */
7821                                 phba->intr_type = MSIX;
7822                                 intr_mode = 2;
7823                         }
7824                 }
7825         }
7826
7827         /* Fallback to MSI if MSI-X initialization failed */
7828         if (cfg_mode >= 1 && phba->intr_type == NONE) {
7829                 retval = lpfc_sli4_enable_msi(phba);
7830                 if (!retval) {
7831                         /* Indicate initialization to MSI mode */
7832                         phba->intr_type = MSI;
7833                         intr_mode = 1;
7834                 }
7835         }
7836
7837         /* Fallback to INTx if both MSI-X/MSI initalization failed */
7838         if (phba->intr_type == NONE) {
7839                 retval = request_irq(phba->pcidev->irq, lpfc_sli4_intr_handler,
7840                                      IRQF_SHARED, LPFC_DRIVER_NAME, phba);
7841                 if (!retval) {
7842                         /* Indicate initialization to INTx mode */
7843                         phba->intr_type = INTx;
7844                         intr_mode = 0;
7845                         for (index = 0; index < phba->cfg_fcp_eq_count;
7846                              index++) {
7847                                 phba->sli4_hba.fcp_eq_hdl[index].idx = index;
7848                                 phba->sli4_hba.fcp_eq_hdl[index].phba = phba;
7849                         }
7850                 }
7851         }
7852         return intr_mode;
7853 }
7854
7855 /**
7856  * lpfc_sli4_disable_intr - Disable device interrupt to SLI-4 device
7857  * @phba: pointer to lpfc hba data structure.
7858  *
7859  * This routine is invoked to disable device interrupt and disassociate
7860  * the driver's interrupt handler(s) from interrupt vector(s) to device
7861  * with SLI-4 interface spec. Depending on the interrupt mode, the driver
7862  * will release the interrupt vector(s) for the message signaled interrupt.
7863  **/
7864 static void
7865 lpfc_sli4_disable_intr(struct lpfc_hba *phba)
7866 {
7867         /* Disable the currently initialized interrupt mode */
7868         if (phba->intr_type == MSIX)
7869                 lpfc_sli4_disable_msix(phba);
7870         else if (phba->intr_type == MSI)
7871                 lpfc_sli4_disable_msi(phba);
7872         else if (phba->intr_type == INTx)
7873                 free_irq(phba->pcidev->irq, phba);
7874
7875         /* Reset interrupt management states */
7876         phba->intr_type = NONE;
7877         phba->sli.slistat.sli_intr = 0;
7878
7879         return;
7880 }
7881
7882 /**
7883  * lpfc_unset_hba - Unset SLI3 hba device initialization
7884  * @phba: pointer to lpfc hba data structure.
7885  *
7886  * This routine is invoked to unset the HBA device initialization steps to
7887  * a device with SLI-3 interface spec.
7888  **/
7889 static void
7890 lpfc_unset_hba(struct lpfc_hba *phba)
7891 {
7892         struct lpfc_vport *vport = phba->pport;
7893         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7894
7895         spin_lock_irq(shost->host_lock);
7896         vport->load_flag |= FC_UNLOADING;
7897         spin_unlock_irq(shost->host_lock);
7898
7899         lpfc_stop_hba_timers(phba);
7900
7901         phba->pport->work_port_events = 0;
7902
7903         lpfc_sli_hba_down(phba);
7904
7905         lpfc_sli_brdrestart(phba);
7906
7907         lpfc_sli_disable_intr(phba);
7908
7909         return;
7910 }
7911
7912 /**
7913  * lpfc_sli4_unset_hba - Unset SLI4 hba device initialization.
7914  * @phba: pointer to lpfc hba data structure.
7915  *
7916  * This routine is invoked to unset the HBA device initialization steps to
7917  * a device with SLI-4 interface spec.
7918  **/
7919 static void
7920 lpfc_sli4_unset_hba(struct lpfc_hba *phba)
7921 {
7922         struct lpfc_vport *vport = phba->pport;
7923         struct Scsi_Host  *shost = lpfc_shost_from_vport(vport);
7924
7925         spin_lock_irq(shost->host_lock);
7926         vport->load_flag |= FC_UNLOADING;
7927         spin_unlock_irq(shost->host_lock);
7928
7929         phba->pport->work_port_events = 0;
7930
7931         /* Stop the SLI4 device port */
7932         lpfc_stop_port(phba);
7933
7934         lpfc_sli4_disable_intr(phba);
7935
7936         /* Reset SLI4 HBA FCoE function */
7937         lpfc_pci_function_reset(phba);
7938
7939         return;
7940 }
7941
7942 /**
7943  * lpfc_sli4_xri_exchange_busy_wait - Wait for device XRI exchange busy
7944  * @phba: Pointer to HBA context object.
7945  *
7946  * This function is called in the SLI4 code path to wait for completion
7947  * of device's XRIs exchange busy. It will check the XRI exchange busy
7948  * on outstanding FCP and ELS I/Os every 10ms for up to 10 seconds; after
7949  * that, it will check the XRI exchange busy on outstanding FCP and ELS
7950  * I/Os every 30 seconds, log error message, and wait forever. Only when
7951  * all XRI exchange busy complete, the driver unload shall proceed with
7952  * invoking the function reset ioctl mailbox command to the CNA and the
7953  * the rest of the driver unload resource release.
7954  **/
7955 static void
7956 lpfc_sli4_xri_exchange_busy_wait(struct lpfc_hba *phba)
7957 {
7958         int wait_time = 0;
7959         int fcp_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
7960         int els_xri_cmpl = list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7961
7962         while (!fcp_xri_cmpl || !els_xri_cmpl) {
7963                 if (wait_time > LPFC_XRI_EXCH_BUSY_WAIT_TMO) {
7964                         if (!fcp_xri_cmpl)
7965                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7966                                                 "2877 FCP XRI exchange busy "
7967                                                 "wait time: %d seconds.\n",
7968                                                 wait_time/1000);
7969                         if (!els_xri_cmpl)
7970                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
7971                                                 "2878 ELS XRI exchange busy "
7972                                                 "wait time: %d seconds.\n",
7973                                                 wait_time/1000);
7974                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T2);
7975                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T2;
7976                 } else {
7977                         msleep(LPFC_XRI_EXCH_BUSY_WAIT_T1);
7978                         wait_time += LPFC_XRI_EXCH_BUSY_WAIT_T1;
7979                 }
7980                 fcp_xri_cmpl =
7981                         list_empty(&phba->sli4_hba.lpfc_abts_scsi_buf_list);
7982                 els_xri_cmpl =
7983                         list_empty(&phba->sli4_hba.lpfc_abts_els_sgl_list);
7984         }
7985 }
7986
7987 /**
7988  * lpfc_sli4_hba_unset - Unset the fcoe hba
7989  * @phba: Pointer to HBA context object.
7990  *
7991  * This function is called in the SLI4 code path to reset the HBA's FCoE
7992  * function. The caller is not required to hold any lock. This routine
7993  * issues PCI function reset mailbox command to reset the FCoE function.
7994  * At the end of the function, it calls lpfc_hba_down_post function to
7995  * free any pending commands.
7996  **/
7997 static void
7998 lpfc_sli4_hba_unset(struct lpfc_hba *phba)
7999 {
8000         int wait_cnt = 0;
8001         LPFC_MBOXQ_t *mboxq;
8002         struct pci_dev *pdev = phba->pcidev;
8003
8004         lpfc_stop_hba_timers(phba);
8005         phba->sli4_hba.intr_enable = 0;
8006
8007         /*
8008          * Gracefully wait out the potential current outstanding asynchronous
8009          * mailbox command.
8010          */
8011
8012         /* First, block any pending async mailbox command from posted */
8013         spin_lock_irq(&phba->hbalock);
8014         phba->sli.sli_flag |= LPFC_SLI_ASYNC_MBX_BLK;
8015         spin_unlock_irq(&phba->hbalock);
8016         /* Now, trying to wait it out if we can */
8017         while (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8018                 msleep(10);
8019                 if (++wait_cnt > LPFC_ACTIVE_MBOX_WAIT_CNT)
8020                         break;
8021         }
8022         /* Forcefully release the outstanding mailbox command if timed out */
8023         if (phba->sli.sli_flag & LPFC_SLI_MBOX_ACTIVE) {
8024                 spin_lock_irq(&phba->hbalock);
8025                 mboxq = phba->sli.mbox_active;
8026                 mboxq->u.mb.mbxStatus = MBX_NOT_FINISHED;
8027                 __lpfc_mbox_cmpl_put(phba, mboxq);
8028                 phba->sli.sli_flag &= ~LPFC_SLI_MBOX_ACTIVE;
8029                 phba->sli.mbox_active = NULL;
8030                 spin_unlock_irq(&phba->hbalock);
8031         }
8032
8033         /* Abort all iocbs associated with the hba */
8034         lpfc_sli_hba_iocb_abort(phba);
8035
8036         /* Wait for completion of device XRI exchange busy */
8037         lpfc_sli4_xri_exchange_busy_wait(phba);
8038
8039         /* Disable PCI subsystem interrupt */
8040         lpfc_sli4_disable_intr(phba);
8041
8042         /* Disable SR-IOV if enabled */
8043         if (phba->cfg_sriov_nr_virtfn)
8044                 pci_disable_sriov(pdev);
8045
8046         /* Stop kthread signal shall trigger work_done one more time */
8047         kthread_stop(phba->worker_thread);
8048
8049         /* Reset SLI4 HBA FCoE function */
8050         lpfc_pci_function_reset(phba);
8051
8052         /* Stop the SLI4 device port */
8053         phba->pport->work_port_events = 0;
8054 }
8055
8056  /**
8057  * lpfc_pc_sli4_params_get - Get the SLI4_PARAMS port capabilities.
8058  * @phba: Pointer to HBA context object.
8059  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8060  *
8061  * This function is called in the SLI4 code path to read the port's
8062  * sli4 capabilities.
8063  *
8064  * This function may be be called from any context that can block-wait
8065  * for the completion.  The expectation is that this routine is called
8066  * typically from probe_one or from the online routine.
8067  **/
8068 int
8069 lpfc_pc_sli4_params_get(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8070 {
8071         int rc;
8072         struct lpfc_mqe *mqe;
8073         struct lpfc_pc_sli4_params *sli4_params;
8074         uint32_t mbox_tmo;
8075
8076         rc = 0;
8077         mqe = &mboxq->u.mqe;
8078
8079         /* Read the port's SLI4 Parameters port capabilities */
8080         lpfc_pc_sli4_params(mboxq);
8081         if (!phba->sli4_hba.intr_enable)
8082                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8083         else {
8084                 mbox_tmo = lpfc_mbox_tmo_val(phba, MBX_PORT_CAPABILITIES);
8085                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq, mbox_tmo);
8086         }
8087
8088         if (unlikely(rc))
8089                 return 1;
8090
8091         sli4_params = &phba->sli4_hba.pc_sli4_params;
8092         sli4_params->if_type = bf_get(if_type, &mqe->un.sli4_params);
8093         sli4_params->sli_rev = bf_get(sli_rev, &mqe->un.sli4_params);
8094         sli4_params->sli_family = bf_get(sli_family, &mqe->un.sli4_params);
8095         sli4_params->featurelevel_1 = bf_get(featurelevel_1,
8096                                              &mqe->un.sli4_params);
8097         sli4_params->featurelevel_2 = bf_get(featurelevel_2,
8098                                              &mqe->un.sli4_params);
8099         sli4_params->proto_types = mqe->un.sli4_params.word3;
8100         sli4_params->sge_supp_len = mqe->un.sli4_params.sge_supp_len;
8101         sli4_params->if_page_sz = bf_get(if_page_sz, &mqe->un.sli4_params);
8102         sli4_params->rq_db_window = bf_get(rq_db_window, &mqe->un.sli4_params);
8103         sli4_params->loopbk_scope = bf_get(loopbk_scope, &mqe->un.sli4_params);
8104         sli4_params->eq_pages_max = bf_get(eq_pages, &mqe->un.sli4_params);
8105         sli4_params->eqe_size = bf_get(eqe_size, &mqe->un.sli4_params);
8106         sli4_params->cq_pages_max = bf_get(cq_pages, &mqe->un.sli4_params);
8107         sli4_params->cqe_size = bf_get(cqe_size, &mqe->un.sli4_params);
8108         sli4_params->mq_pages_max = bf_get(mq_pages, &mqe->un.sli4_params);
8109         sli4_params->mqe_size = bf_get(mqe_size, &mqe->un.sli4_params);
8110         sli4_params->mq_elem_cnt = bf_get(mq_elem_cnt, &mqe->un.sli4_params);
8111         sli4_params->wq_pages_max = bf_get(wq_pages, &mqe->un.sli4_params);
8112         sli4_params->wqe_size = bf_get(wqe_size, &mqe->un.sli4_params);
8113         sli4_params->rq_pages_max = bf_get(rq_pages, &mqe->un.sli4_params);
8114         sli4_params->rqe_size = bf_get(rqe_size, &mqe->un.sli4_params);
8115         sli4_params->hdr_pages_max = bf_get(hdr_pages, &mqe->un.sli4_params);
8116         sli4_params->hdr_size = bf_get(hdr_size, &mqe->un.sli4_params);
8117         sli4_params->hdr_pp_align = bf_get(hdr_pp_align, &mqe->un.sli4_params);
8118         sli4_params->sgl_pages_max = bf_get(sgl_pages, &mqe->un.sli4_params);
8119         sli4_params->sgl_pp_align = bf_get(sgl_pp_align, &mqe->un.sli4_params);
8120
8121         /* Make sure that sge_supp_len can be handled by the driver */
8122         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8123                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8124
8125         return rc;
8126 }
8127
8128 /**
8129  * lpfc_get_sli4_parameters - Get the SLI4 Config PARAMETERS.
8130  * @phba: Pointer to HBA context object.
8131  * @mboxq: Pointer to the mailboxq memory for the mailbox command response.
8132  *
8133  * This function is called in the SLI4 code path to read the port's
8134  * sli4 capabilities.
8135  *
8136  * This function may be be called from any context that can block-wait
8137  * for the completion.  The expectation is that this routine is called
8138  * typically from probe_one or from the online routine.
8139  **/
8140 int
8141 lpfc_get_sli4_parameters(struct lpfc_hba *phba, LPFC_MBOXQ_t *mboxq)
8142 {
8143         int rc;
8144         struct lpfc_mqe *mqe = &mboxq->u.mqe;
8145         struct lpfc_pc_sli4_params *sli4_params;
8146         int length;
8147         struct lpfc_sli4_parameters *mbx_sli4_parameters;
8148
8149         /*
8150          * By default, the driver assumes the SLI4 port requires RPI
8151          * header postings.  The SLI4_PARAM response will correct this
8152          * assumption.
8153          */
8154         phba->sli4_hba.rpi_hdrs_in_use = 1;
8155
8156         /* Read the port's SLI4 Config Parameters */
8157         length = (sizeof(struct lpfc_mbx_get_sli4_parameters) -
8158                   sizeof(struct lpfc_sli4_cfg_mhdr));
8159         lpfc_sli4_config(phba, mboxq, LPFC_MBOX_SUBSYSTEM_COMMON,
8160                          LPFC_MBOX_OPCODE_GET_SLI4_PARAMETERS,
8161                          length, LPFC_SLI4_MBX_EMBED);
8162         if (!phba->sli4_hba.intr_enable)
8163                 rc = lpfc_sli_issue_mbox(phba, mboxq, MBX_POLL);
8164         else
8165                 rc = lpfc_sli_issue_mbox_wait(phba, mboxq,
8166                         lpfc_mbox_tmo_val(phba, MBX_SLI4_CONFIG));
8167         if (unlikely(rc))
8168                 return rc;
8169         sli4_params = &phba->sli4_hba.pc_sli4_params;
8170         mbx_sli4_parameters = &mqe->un.get_sli4_parameters.sli4_parameters;
8171         sli4_params->if_type = bf_get(cfg_if_type, mbx_sli4_parameters);
8172         sli4_params->sli_rev = bf_get(cfg_sli_rev, mbx_sli4_parameters);
8173         sli4_params->sli_family = bf_get(cfg_sli_family, mbx_sli4_parameters);
8174         sli4_params->featurelevel_1 = bf_get(cfg_sli_hint_1,
8175                                              mbx_sli4_parameters);
8176         sli4_params->featurelevel_2 = bf_get(cfg_sli_hint_2,
8177                                              mbx_sli4_parameters);
8178         if (bf_get(cfg_phwq, mbx_sli4_parameters))
8179                 phba->sli3_options |= LPFC_SLI4_PHWQ_ENABLED;
8180         else
8181                 phba->sli3_options &= ~LPFC_SLI4_PHWQ_ENABLED;
8182         sli4_params->sge_supp_len = mbx_sli4_parameters->sge_supp_len;
8183         sli4_params->loopbk_scope = bf_get(loopbk_scope, mbx_sli4_parameters);
8184         sli4_params->cqv = bf_get(cfg_cqv, mbx_sli4_parameters);
8185         sli4_params->mqv = bf_get(cfg_mqv, mbx_sli4_parameters);
8186         sli4_params->wqv = bf_get(cfg_wqv, mbx_sli4_parameters);
8187         sli4_params->rqv = bf_get(cfg_rqv, mbx_sli4_parameters);
8188         sli4_params->sgl_pages_max = bf_get(cfg_sgl_page_cnt,
8189                                             mbx_sli4_parameters);
8190         sli4_params->sgl_pp_align = bf_get(cfg_sgl_pp_align,
8191                                            mbx_sli4_parameters);
8192         phba->sli4_hba.extents_in_use = bf_get(cfg_ext, mbx_sli4_parameters);
8193         phba->sli4_hba.rpi_hdrs_in_use = bf_get(cfg_hdrr, mbx_sli4_parameters);
8194
8195         /* Make sure that sge_supp_len can be handled by the driver */
8196         if (sli4_params->sge_supp_len > LPFC_MAX_SGE_SIZE)
8197                 sli4_params->sge_supp_len = LPFC_MAX_SGE_SIZE;
8198
8199         return 0;
8200 }
8201
8202 /**
8203  * lpfc_pci_probe_one_s3 - PCI probe func to reg SLI-3 device to PCI subsystem.
8204  * @pdev: pointer to PCI device
8205  * @pid: pointer to PCI device identifier
8206  *
8207  * This routine is to be called to attach a device with SLI-3 interface spec
8208  * to the PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8209  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8210  * information of the device and driver to see if the driver state that it can
8211  * support this kind of device. If the match is successful, the driver core
8212  * invokes this routine. If this routine determines it can claim the HBA, it
8213  * does all the initialization that it needs to do to handle the HBA properly.
8214  *
8215  * Return code
8216  *      0 - driver can claim the device
8217  *      negative value - driver can not claim the device
8218  **/
8219 static int __devinit
8220 lpfc_pci_probe_one_s3(struct pci_dev *pdev, const struct pci_device_id *pid)
8221 {
8222         struct lpfc_hba   *phba;
8223         struct lpfc_vport *vport = NULL;
8224         struct Scsi_Host  *shost = NULL;
8225         int error;
8226         uint32_t cfg_mode, intr_mode;
8227
8228         /* Allocate memory for HBA structure */
8229         phba = lpfc_hba_alloc(pdev);
8230         if (!phba)
8231                 return -ENOMEM;
8232
8233         /* Perform generic PCI device enabling operation */
8234         error = lpfc_enable_pci_dev(phba);
8235         if (error) {
8236                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8237                                 "1401 Failed to enable pci device.\n");
8238                 goto out_free_phba;
8239         }
8240
8241         /* Set up SLI API function jump table for PCI-device group-0 HBAs */
8242         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_LP);
8243         if (error)
8244                 goto out_disable_pci_dev;
8245
8246         /* Set up SLI-3 specific device PCI memory space */
8247         error = lpfc_sli_pci_mem_setup(phba);
8248         if (error) {
8249                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8250                                 "1402 Failed to set up pci memory space.\n");
8251                 goto out_disable_pci_dev;
8252         }
8253
8254         /* Set up phase-1 common device driver resources */
8255         error = lpfc_setup_driver_resource_phase1(phba);
8256         if (error) {
8257                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8258                                 "1403 Failed to set up driver resource.\n");
8259                 goto out_unset_pci_mem_s3;
8260         }
8261
8262         /* Set up SLI-3 specific device driver resources */
8263         error = lpfc_sli_driver_resource_setup(phba);
8264         if (error) {
8265                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8266                                 "1404 Failed to set up driver resource.\n");
8267                 goto out_unset_pci_mem_s3;
8268         }
8269
8270         /* Initialize and populate the iocb list per host */
8271         error = lpfc_init_iocb_list(phba, LPFC_IOCB_LIST_CNT);
8272         if (error) {
8273                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8274                                 "1405 Failed to initialize iocb list.\n");
8275                 goto out_unset_driver_resource_s3;
8276         }
8277
8278         /* Set up common device driver resources */
8279         error = lpfc_setup_driver_resource_phase2(phba);
8280         if (error) {
8281                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8282                                 "1406 Failed to set up driver resource.\n");
8283                 goto out_free_iocb_list;
8284         }
8285
8286         /* Create SCSI host to the physical port */
8287         error = lpfc_create_shost(phba);
8288         if (error) {
8289                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8290                                 "1407 Failed to create scsi host.\n");
8291                 goto out_unset_driver_resource;
8292         }
8293
8294         /* Configure sysfs attributes */
8295         vport = phba->pport;
8296         error = lpfc_alloc_sysfs_attr(vport);
8297         if (error) {
8298                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8299                                 "1476 Failed to allocate sysfs attr\n");
8300                 goto out_destroy_shost;
8301         }
8302
8303         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
8304         /* Now, trying to enable interrupt and bring up the device */
8305         cfg_mode = phba->cfg_use_msi;
8306         while (true) {
8307                 /* Put device to a known state before enabling interrupt */
8308                 lpfc_stop_port(phba);
8309                 /* Configure and enable interrupt */
8310                 intr_mode = lpfc_sli_enable_intr(phba, cfg_mode);
8311                 if (intr_mode == LPFC_INTR_ERROR) {
8312                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8313                                         "0431 Failed to enable interrupt.\n");
8314                         error = -ENODEV;
8315                         goto out_free_sysfs_attr;
8316                 }
8317                 /* SLI-3 HBA setup */
8318                 if (lpfc_sli_hba_setup(phba)) {
8319                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8320                                         "1477 Failed to set up hba\n");
8321                         error = -ENODEV;
8322                         goto out_remove_device;
8323                 }
8324
8325                 /* Wait 50ms for the interrupts of previous mailbox commands */
8326                 msleep(50);
8327                 /* Check active interrupts on message signaled interrupts */
8328                 if (intr_mode == 0 ||
8329                     phba->sli.slistat.sli_intr > LPFC_MSIX_VECTORS) {
8330                         /* Log the current active interrupt mode */
8331                         phba->intr_mode = intr_mode;
8332                         lpfc_log_intr_mode(phba, intr_mode);
8333                         break;
8334                 } else {
8335                         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8336                                         "0447 Configure interrupt mode (%d) "
8337                                         "failed active interrupt test.\n",
8338                                         intr_mode);
8339                         /* Disable the current interrupt mode */
8340                         lpfc_sli_disable_intr(phba);
8341                         /* Try next level of interrupt mode */
8342                         cfg_mode = --intr_mode;
8343                 }
8344         }
8345
8346         /* Perform post initialization setup */
8347         lpfc_post_init_setup(phba);
8348
8349         /* Check if there are static vports to be created. */
8350         lpfc_create_static_vport(phba);
8351
8352         return 0;
8353
8354 out_remove_device:
8355         lpfc_unset_hba(phba);
8356 out_free_sysfs_attr:
8357         lpfc_free_sysfs_attr(vport);
8358 out_destroy_shost:
8359         lpfc_destroy_shost(phba);
8360 out_unset_driver_resource:
8361         lpfc_unset_driver_resource_phase2(phba);
8362 out_free_iocb_list:
8363         lpfc_free_iocb_list(phba);
8364 out_unset_driver_resource_s3:
8365         lpfc_sli_driver_resource_unset(phba);
8366 out_unset_pci_mem_s3:
8367         lpfc_sli_pci_mem_unset(phba);
8368 out_disable_pci_dev:
8369         lpfc_disable_pci_dev(phba);
8370         if (shost)
8371                 scsi_host_put(shost);
8372 out_free_phba:
8373         lpfc_hba_free(phba);
8374         return error;
8375 }
8376
8377 /**
8378  * lpfc_pci_remove_one_s3 - PCI func to unreg SLI-3 device from PCI subsystem.
8379  * @pdev: pointer to PCI device
8380  *
8381  * This routine is to be called to disattach a device with SLI-3 interface
8382  * spec from PCI subsystem. When an Emulex HBA with SLI-3 interface spec is
8383  * removed from PCI bus, it performs all the necessary cleanup for the HBA
8384  * device to be removed from the PCI subsystem properly.
8385  **/
8386 static void __devexit
8387 lpfc_pci_remove_one_s3(struct pci_dev *pdev)
8388 {
8389         struct Scsi_Host  *shost = pci_get_drvdata(pdev);
8390         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
8391         struct lpfc_vport **vports;
8392         struct lpfc_hba   *phba = vport->phba;
8393         int i;
8394         int bars = pci_select_bars(pdev, IORESOURCE_MEM);
8395
8396         spin_lock_irq(&phba->hbalock);
8397         vport->load_flag |= FC_UNLOADING;
8398         spin_unlock_irq(&phba->hbalock);
8399
8400         lpfc_free_sysfs_attr(vport);
8401
8402         /* Release all the vports against this physical port */
8403         vports = lpfc_create_vport_work_array(phba);
8404         if (vports != NULL)
8405                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
8406                         fc_vport_terminate(vports[i]->fc_vport);
8407         lpfc_destroy_vport_work_array(phba, vports);
8408
8409         /* Remove FC host and then SCSI host with the physical port */
8410         fc_remove_host(shost);
8411         scsi_remove_host(shost);
8412         lpfc_cleanup(vport);
8413
8414         /*
8415          * Bring down the SLI Layer. This step disable all interrupts,
8416          * clears the rings, discards all mailbox commands, and resets
8417          * the HBA.
8418          */
8419
8420         /* HBA interrupt will be disabled after this call */
8421         lpfc_sli_hba_down(phba);
8422         /* Stop kthread signal shall trigger work_done one more time */
8423         kthread_stop(phba->worker_thread);
8424         /* Final cleanup of txcmplq and reset the HBA */
8425         lpfc_sli_brdrestart(phba);
8426
8427         lpfc_stop_hba_timers(phba);
8428         spin_lock_irq(&phba->hbalock);
8429         list_del_init(&vport->listentry);
8430         spin_unlock_irq(&phba->hbalock);
8431
8432         lpfc_debugfs_terminate(vport);
8433
8434         /* Disable SR-IOV if enabled */
8435         if (phba->cfg_sriov_nr_virtfn)
8436                 pci_disable_sriov(pdev);
8437
8438         /* Disable interrupt */
8439         lpfc_sli_disable_intr(phba);
8440
8441         pci_set_drvdata(pdev, NULL);
8442         scsi_host_put(shost);
8443
8444         /*
8445          * Call scsi_free before mem_free since scsi bufs are released to their
8446          * corresponding pools here.
8447          */
8448         lpfc_scsi_free(phba);
8449         lpfc_mem_free_all(phba);
8450
8451         dma_free_coherent(&pdev->dev, lpfc_sli_hbq_size(),
8452                           phba->hbqslimp.virt, phba->hbqslimp.phys);
8453
8454         /* Free resources associated with SLI2 interface */
8455         dma_free_coherent(&pdev->dev, SLI2_SLIM_SIZE,
8456                           phba->slim2p.virt, phba->slim2p.phys);
8457
8458         /* unmap adapter SLIM and Control Registers */
8459         iounmap(phba->ctrl_regs_memmap_p);
8460         iounmap(phba->slim_memmap_p);
8461
8462         lpfc_hba_free(phba);
8463
8464         pci_release_selected_regions(pdev, bars);
8465         pci_disable_device(pdev);
8466 }
8467
8468 /**
8469  * lpfc_pci_suspend_one_s3 - PCI func to suspend SLI-3 device for power mgmnt
8470  * @pdev: pointer to PCI device
8471  * @msg: power management message
8472  *
8473  * This routine is to be called from the kernel's PCI subsystem to support
8474  * system Power Management (PM) to device with SLI-3 interface spec. When
8475  * PM invokes this method, it quiesces the device by stopping the driver's
8476  * worker thread for the device, turning off device's interrupt and DMA,
8477  * and bring the device offline. Note that as the driver implements the
8478  * minimum PM requirements to a power-aware driver's PM support for the
8479  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
8480  * to the suspend() method call will be treated as SUSPEND and the driver will
8481  * fully reinitialize its device during resume() method call, the driver will
8482  * set device to PCI_D3hot state in PCI config space instead of setting it
8483  * according to the @msg provided by the PM.
8484  *
8485  * Return code
8486  *      0 - driver suspended the device
8487  *      Error otherwise
8488  **/
8489 static int
8490 lpfc_pci_suspend_one_s3(struct pci_dev *pdev, pm_message_t msg)
8491 {
8492         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8493         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8494
8495         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8496                         "0473 PCI device Power Management suspend.\n");
8497
8498         /* Bring down the device */
8499         lpfc_offline_prep(phba);
8500         lpfc_offline(phba);
8501         kthread_stop(phba->worker_thread);
8502
8503         /* Disable interrupt from device */
8504         lpfc_sli_disable_intr(phba);
8505
8506         /* Save device state to PCI config space */
8507         pci_save_state(pdev);
8508         pci_set_power_state(pdev, PCI_D3hot);
8509
8510         return 0;
8511 }
8512
8513 /**
8514  * lpfc_pci_resume_one_s3 - PCI func to resume SLI-3 device for power mgmnt
8515  * @pdev: pointer to PCI device
8516  *
8517  * This routine is to be called from the kernel's PCI subsystem to support
8518  * system Power Management (PM) to device with SLI-3 interface spec. When PM
8519  * invokes this method, it restores the device's PCI config space state and
8520  * fully reinitializes the device and brings it online. Note that as the
8521  * driver implements the minimum PM requirements to a power-aware driver's
8522  * PM for suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE,
8523  * FREEZE) to the suspend() method call will be treated as SUSPEND and the
8524  * driver will fully reinitialize its device during resume() method call,
8525  * the device will be set to PCI_D0 directly in PCI config space before
8526  * restoring the state.
8527  *
8528  * Return code
8529  *      0 - driver suspended the device
8530  *      Error otherwise
8531  **/
8532 static int
8533 lpfc_pci_resume_one_s3(struct pci_dev *pdev)
8534 {
8535         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8536         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8537         uint32_t intr_mode;
8538         int error;
8539
8540         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8541                         "0452 PCI device Power Management resume.\n");
8542
8543         /* Restore device state from PCI config space */
8544         pci_set_power_state(pdev, PCI_D0);
8545         pci_restore_state(pdev);
8546
8547         /*
8548          * As the new kernel behavior of pci_restore_state() API call clears
8549          * device saved_state flag, need to save the restored state again.
8550          */
8551         pci_save_state(pdev);
8552
8553         if (pdev->is_busmaster)
8554                 pci_set_master(pdev);
8555
8556         /* Startup the kernel thread for this host adapter. */
8557         phba->worker_thread = kthread_run(lpfc_do_work, phba,
8558                                         "lpfc_worker_%d", phba->brd_no);
8559         if (IS_ERR(phba->worker_thread)) {
8560                 error = PTR_ERR(phba->worker_thread);
8561                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8562                                 "0434 PM resume failed to start worker "
8563                                 "thread: error=x%x.\n", error);
8564                 return error;
8565         }
8566
8567         /* Configure and enable interrupt */
8568         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8569         if (intr_mode == LPFC_INTR_ERROR) {
8570                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8571                                 "0430 PM resume Failed to enable interrupt\n");
8572                 return -EIO;
8573         } else
8574                 phba->intr_mode = intr_mode;
8575
8576         /* Restart HBA and bring it online */
8577         lpfc_sli_brdrestart(phba);
8578         lpfc_online(phba);
8579
8580         /* Log the current active interrupt mode */
8581         lpfc_log_intr_mode(phba, phba->intr_mode);
8582
8583         return 0;
8584 }
8585
8586 /**
8587  * lpfc_sli_prep_dev_for_recover - Prepare SLI3 device for pci slot recover
8588  * @phba: pointer to lpfc hba data structure.
8589  *
8590  * This routine is called to prepare the SLI3 device for PCI slot recover. It
8591  * aborts all the outstanding SCSI I/Os to the pci device.
8592  **/
8593 static void
8594 lpfc_sli_prep_dev_for_recover(struct lpfc_hba *phba)
8595 {
8596         struct lpfc_sli *psli = &phba->sli;
8597         struct lpfc_sli_ring  *pring;
8598
8599         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8600                         "2723 PCI channel I/O abort preparing for recovery\n");
8601
8602         /*
8603          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
8604          * and let the SCSI mid-layer to retry them to recover.
8605          */
8606         pring = &psli->ring[psli->fcp_ring];
8607         lpfc_sli_abort_iocb_ring(phba, pring);
8608 }
8609
8610 /**
8611  * lpfc_sli_prep_dev_for_reset - Prepare SLI3 device for pci slot reset
8612  * @phba: pointer to lpfc hba data structure.
8613  *
8614  * This routine is called to prepare the SLI3 device for PCI slot reset. It
8615  * disables the device interrupt and pci device, and aborts the internal FCP
8616  * pending I/Os.
8617  **/
8618 static void
8619 lpfc_sli_prep_dev_for_reset(struct lpfc_hba *phba)
8620 {
8621         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8622                         "2710 PCI channel disable preparing for reset\n");
8623
8624         /* Block any management I/Os to the device */
8625         lpfc_block_mgmt_io(phba);
8626
8627         /* Block all SCSI devices' I/Os on the host */
8628         lpfc_scsi_dev_block(phba);
8629
8630         /* stop all timers */
8631         lpfc_stop_hba_timers(phba);
8632
8633         /* Disable interrupt and pci device */
8634         lpfc_sli_disable_intr(phba);
8635         pci_disable_device(phba->pcidev);
8636
8637         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
8638         lpfc_sli_flush_fcp_rings(phba);
8639 }
8640
8641 /**
8642  * lpfc_sli_prep_dev_for_perm_failure - Prepare SLI3 dev for pci slot disable
8643  * @phba: pointer to lpfc hba data structure.
8644  *
8645  * This routine is called to prepare the SLI3 device for PCI slot permanently
8646  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
8647  * pending I/Os.
8648  **/
8649 static void
8650 lpfc_sli_prep_dev_for_perm_failure(struct lpfc_hba *phba)
8651 {
8652         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8653                         "2711 PCI channel permanent disable for failure\n");
8654         /* Block all SCSI devices' I/Os on the host */
8655         lpfc_scsi_dev_block(phba);
8656
8657         /* stop all timers */
8658         lpfc_stop_hba_timers(phba);
8659
8660         /* Clean up all driver's outstanding SCSI I/Os */
8661         lpfc_sli_flush_fcp_rings(phba);
8662 }
8663
8664 /**
8665  * lpfc_io_error_detected_s3 - Method for handling SLI-3 device PCI I/O error
8666  * @pdev: pointer to PCI device.
8667  * @state: the current PCI connection state.
8668  *
8669  * This routine is called from the PCI subsystem for I/O error handling to
8670  * device with SLI-3 interface spec. This function is called by the PCI
8671  * subsystem after a PCI bus error affecting this device has been detected.
8672  * When this function is invoked, it will need to stop all the I/Os and
8673  * interrupt(s) to the device. Once that is done, it will return
8674  * PCI_ERS_RESULT_NEED_RESET for the PCI subsystem to perform proper recovery
8675  * as desired.
8676  *
8677  * Return codes
8678  *      PCI_ERS_RESULT_CAN_RECOVER - can be recovered with reset_link
8679  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
8680  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8681  **/
8682 static pci_ers_result_t
8683 lpfc_io_error_detected_s3(struct pci_dev *pdev, pci_channel_state_t state)
8684 {
8685         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8686         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8687
8688         switch (state) {
8689         case pci_channel_io_normal:
8690                 /* Non-fatal error, prepare for recovery */
8691                 lpfc_sli_prep_dev_for_recover(phba);
8692                 return PCI_ERS_RESULT_CAN_RECOVER;
8693         case pci_channel_io_frozen:
8694                 /* Fatal error, prepare for slot reset */
8695                 lpfc_sli_prep_dev_for_reset(phba);
8696                 return PCI_ERS_RESULT_NEED_RESET;
8697         case pci_channel_io_perm_failure:
8698                 /* Permanent failure, prepare for device down */
8699                 lpfc_sli_prep_dev_for_perm_failure(phba);
8700                 return PCI_ERS_RESULT_DISCONNECT;
8701         default:
8702                 /* Unknown state, prepare and request slot reset */
8703                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8704                                 "0472 Unknown PCI error state: x%x\n", state);
8705                 lpfc_sli_prep_dev_for_reset(phba);
8706                 return PCI_ERS_RESULT_NEED_RESET;
8707         }
8708 }
8709
8710 /**
8711  * lpfc_io_slot_reset_s3 - Method for restarting PCI SLI-3 device from scratch.
8712  * @pdev: pointer to PCI device.
8713  *
8714  * This routine is called from the PCI subsystem for error handling to
8715  * device with SLI-3 interface spec. This is called after PCI bus has been
8716  * reset to restart the PCI card from scratch, as if from a cold-boot.
8717  * During the PCI subsystem error recovery, after driver returns
8718  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
8719  * recovery and then call this routine before calling the .resume method
8720  * to recover the device. This function will initialize the HBA device,
8721  * enable the interrupt, but it will just put the HBA to offline state
8722  * without passing any I/O traffic.
8723  *
8724  * Return codes
8725  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
8726  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
8727  */
8728 static pci_ers_result_t
8729 lpfc_io_slot_reset_s3(struct pci_dev *pdev)
8730 {
8731         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8732         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8733         struct lpfc_sli *psli = &phba->sli;
8734         uint32_t intr_mode;
8735
8736         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
8737         if (pci_enable_device_mem(pdev)) {
8738                 printk(KERN_ERR "lpfc: Cannot re-enable "
8739                         "PCI device after reset.\n");
8740                 return PCI_ERS_RESULT_DISCONNECT;
8741         }
8742
8743         pci_restore_state(pdev);
8744
8745         /*
8746          * As the new kernel behavior of pci_restore_state() API call clears
8747          * device saved_state flag, need to save the restored state again.
8748          */
8749         pci_save_state(pdev);
8750
8751         if (pdev->is_busmaster)
8752                 pci_set_master(pdev);
8753
8754         spin_lock_irq(&phba->hbalock);
8755         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
8756         spin_unlock_irq(&phba->hbalock);
8757
8758         /* Configure and enable interrupt */
8759         intr_mode = lpfc_sli_enable_intr(phba, phba->intr_mode);
8760         if (intr_mode == LPFC_INTR_ERROR) {
8761                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8762                                 "0427 Cannot re-enable interrupt after "
8763                                 "slot reset.\n");
8764                 return PCI_ERS_RESULT_DISCONNECT;
8765         } else
8766                 phba->intr_mode = intr_mode;
8767
8768         /* Take device offline, it will perform cleanup */
8769         lpfc_offline_prep(phba);
8770         lpfc_offline(phba);
8771         lpfc_sli_brdrestart(phba);
8772
8773         /* Log the current active interrupt mode */
8774         lpfc_log_intr_mode(phba, phba->intr_mode);
8775
8776         return PCI_ERS_RESULT_RECOVERED;
8777 }
8778
8779 /**
8780  * lpfc_io_resume_s3 - Method for resuming PCI I/O operation on SLI-3 device.
8781  * @pdev: pointer to PCI device
8782  *
8783  * This routine is called from the PCI subsystem for error handling to device
8784  * with SLI-3 interface spec. It is called when kernel error recovery tells
8785  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
8786  * error recovery. After this call, traffic can start to flow from this device
8787  * again.
8788  */
8789 static void
8790 lpfc_io_resume_s3(struct pci_dev *pdev)
8791 {
8792         struct Scsi_Host *shost = pci_get_drvdata(pdev);
8793         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
8794
8795         /* Bring device online, it will be no-op for non-fatal error resume */
8796         lpfc_online(phba);
8797
8798         /* Clean up Advanced Error Reporting (AER) if needed */
8799         if (phba->hba_flag & HBA_AER_ENABLED)
8800                 pci_cleanup_aer_uncorrect_error_status(pdev);
8801 }
8802
8803 /**
8804  * lpfc_sli4_get_els_iocb_cnt - Calculate the # of ELS IOCBs to reserve
8805  * @phba: pointer to lpfc hba data structure.
8806  *
8807  * returns the number of ELS/CT IOCBs to reserve
8808  **/
8809 int
8810 lpfc_sli4_get_els_iocb_cnt(struct lpfc_hba *phba)
8811 {
8812         int max_xri = phba->sli4_hba.max_cfg_param.max_xri;
8813
8814         if (phba->sli_rev == LPFC_SLI_REV4) {
8815                 if (max_xri <= 100)
8816                         return 10;
8817                 else if (max_xri <= 256)
8818                         return 25;
8819                 else if (max_xri <= 512)
8820                         return 50;
8821                 else if (max_xri <= 1024)
8822                         return 100;
8823                 else
8824                         return 150;
8825         } else
8826                 return 0;
8827 }
8828
8829 /**
8830  * lpfc_write_firmware - attempt to write a firmware image to the port
8831  * @phba: pointer to lpfc hba data structure.
8832  * @fw: pointer to firmware image returned from request_firmware.
8833  *
8834  * returns the number of bytes written if write is successful.
8835  * returns a negative error value if there were errors.
8836  * returns 0 if firmware matches currently active firmware on port.
8837  **/
8838 int
8839 lpfc_write_firmware(struct lpfc_hba *phba, const struct firmware *fw)
8840 {
8841         char fwrev[32];
8842         struct lpfc_grp_hdr *image = (struct lpfc_grp_hdr *)fw->data;
8843         struct list_head dma_buffer_list;
8844         int i, rc = 0;
8845         struct lpfc_dmabuf *dmabuf, *next;
8846         uint32_t offset = 0, temp_offset = 0;
8847
8848         INIT_LIST_HEAD(&dma_buffer_list);
8849         if ((image->magic_number != LPFC_GROUP_OJECT_MAGIC_NUM) ||
8850             (bf_get(lpfc_grp_hdr_file_type, image) != LPFC_FILE_TYPE_GROUP) ||
8851             (bf_get(lpfc_grp_hdr_id, image) != LPFC_FILE_ID_GROUP) ||
8852             (image->size != fw->size)) {
8853                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8854                                 "3022 Invalid FW image found. "
8855                                 "Magic:%d Type:%x ID:%x\n",
8856                                 image->magic_number,
8857                                 bf_get(lpfc_grp_hdr_file_type, image),
8858                                 bf_get(lpfc_grp_hdr_id, image));
8859                 return -EINVAL;
8860         }
8861         lpfc_decode_firmware_rev(phba, fwrev, 1);
8862         if (strncmp(fwrev, image->rev_name, strnlen(fwrev, 16))) {
8863                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8864                                 "3023 Updating Firmware. Current Version:%s "
8865                                 "New Version:%s\n",
8866                                 fwrev, image->rev_name);
8867                 for (i = 0; i < LPFC_MBX_WR_CONFIG_MAX_BDE; i++) {
8868                         dmabuf = kzalloc(sizeof(struct lpfc_dmabuf),
8869                                          GFP_KERNEL);
8870                         if (!dmabuf) {
8871                                 rc = -ENOMEM;
8872                                 goto out;
8873                         }
8874                         dmabuf->virt = dma_alloc_coherent(&phba->pcidev->dev,
8875                                                           SLI4_PAGE_SIZE,
8876                                                           &dmabuf->phys,
8877                                                           GFP_KERNEL);
8878                         if (!dmabuf->virt) {
8879                                 kfree(dmabuf);
8880                                 rc = -ENOMEM;
8881                                 goto out;
8882                         }
8883                         list_add_tail(&dmabuf->list, &dma_buffer_list);
8884                 }
8885                 while (offset < fw->size) {
8886                         temp_offset = offset;
8887                         list_for_each_entry(dmabuf, &dma_buffer_list, list) {
8888                                 if (offset + SLI4_PAGE_SIZE > fw->size) {
8889                                         temp_offset += fw->size - offset;
8890                                         memcpy(dmabuf->virt,
8891                                                fw->data + temp_offset,
8892                                                fw->size - offset);
8893                                         break;
8894                                 }
8895                                 temp_offset += SLI4_PAGE_SIZE;
8896                                 memcpy(dmabuf->virt, fw->data + temp_offset,
8897                                        SLI4_PAGE_SIZE);
8898                         }
8899                         rc = lpfc_wr_object(phba, &dma_buffer_list,
8900                                     (fw->size - offset), &offset);
8901                         if (rc) {
8902                                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8903                                                 "3024 Firmware update failed. "
8904                                                 "%d\n", rc);
8905                                 goto out;
8906                         }
8907                 }
8908                 rc = offset;
8909         }
8910 out:
8911         list_for_each_entry_safe(dmabuf, next, &dma_buffer_list, list) {
8912                 list_del(&dmabuf->list);
8913                 dma_free_coherent(&phba->pcidev->dev, SLI4_PAGE_SIZE,
8914                                   dmabuf->virt, dmabuf->phys);
8915                 kfree(dmabuf);
8916         }
8917         return rc;
8918 }
8919
8920 /**
8921  * lpfc_pci_probe_one_s4 - PCI probe func to reg SLI-4 device to PCI subsys
8922  * @pdev: pointer to PCI device
8923  * @pid: pointer to PCI device identifier
8924  *
8925  * This routine is called from the kernel's PCI subsystem to device with
8926  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
8927  * presented on PCI bus, the kernel PCI subsystem looks at PCI device-specific
8928  * information of the device and driver to see if the driver state that it
8929  * can support this kind of device. If the match is successful, the driver
8930  * core invokes this routine. If this routine determines it can claim the HBA,
8931  * it does all the initialization that it needs to do to handle the HBA
8932  * properly.
8933  *
8934  * Return code
8935  *      0 - driver can claim the device
8936  *      negative value - driver can not claim the device
8937  **/
8938 static int __devinit
8939 lpfc_pci_probe_one_s4(struct pci_dev *pdev, const struct pci_device_id *pid)
8940 {
8941         struct lpfc_hba   *phba;
8942         struct lpfc_vport *vport = NULL;
8943         struct Scsi_Host  *shost = NULL;
8944         int error;
8945         uint32_t cfg_mode, intr_mode;
8946         int mcnt;
8947         int adjusted_fcp_eq_count;
8948         int fcp_qidx;
8949         const struct firmware *fw;
8950         uint8_t file_name[16];
8951
8952         /* Allocate memory for HBA structure */
8953         phba = lpfc_hba_alloc(pdev);
8954         if (!phba)
8955                 return -ENOMEM;
8956
8957         /* Perform generic PCI device enabling operation */
8958         error = lpfc_enable_pci_dev(phba);
8959         if (error) {
8960                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8961                                 "1409 Failed to enable pci device.\n");
8962                 goto out_free_phba;
8963         }
8964
8965         /* Set up SLI API function jump table for PCI-device group-1 HBAs */
8966         error = lpfc_api_table_setup(phba, LPFC_PCI_DEV_OC);
8967         if (error)
8968                 goto out_disable_pci_dev;
8969
8970         /* Set up SLI-4 specific device PCI memory space */
8971         error = lpfc_sli4_pci_mem_setup(phba);
8972         if (error) {
8973                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8974                                 "1410 Failed to set up pci memory space.\n");
8975                 goto out_disable_pci_dev;
8976         }
8977
8978         /* Set up phase-1 common device driver resources */
8979         error = lpfc_setup_driver_resource_phase1(phba);
8980         if (error) {
8981                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8982                                 "1411 Failed to set up driver resource.\n");
8983                 goto out_unset_pci_mem_s4;
8984         }
8985
8986         /* Set up SLI-4 Specific device driver resources */
8987         error = lpfc_sli4_driver_resource_setup(phba);
8988         if (error) {
8989                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
8990                                 "1412 Failed to set up driver resource.\n");
8991                 goto out_unset_pci_mem_s4;
8992         }
8993
8994         /* Initialize and populate the iocb list per host */
8995
8996         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
8997                         "2821 initialize iocb list %d.\n",
8998                         phba->cfg_iocb_cnt*1024);
8999         error = lpfc_init_iocb_list(phba, phba->cfg_iocb_cnt*1024);
9000
9001         if (error) {
9002                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9003                                 "1413 Failed to initialize iocb list.\n");
9004                 goto out_unset_driver_resource_s4;
9005         }
9006
9007         INIT_LIST_HEAD(&phba->active_rrq_list);
9008
9009         /* Set up common device driver resources */
9010         error = lpfc_setup_driver_resource_phase2(phba);
9011         if (error) {
9012                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9013                                 "1414 Failed to set up driver resource.\n");
9014                 goto out_free_iocb_list;
9015         }
9016
9017         /* Create SCSI host to the physical port */
9018         error = lpfc_create_shost(phba);
9019         if (error) {
9020                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9021                                 "1415 Failed to create scsi host.\n");
9022                 goto out_unset_driver_resource;
9023         }
9024
9025         /* Configure sysfs attributes */
9026         vport = phba->pport;
9027         error = lpfc_alloc_sysfs_attr(vport);
9028         if (error) {
9029                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9030                                 "1416 Failed to allocate sysfs attr\n");
9031                 goto out_destroy_shost;
9032         }
9033
9034         shost = lpfc_shost_from_vport(vport); /* save shost for error cleanup */
9035         /* Now, trying to enable interrupt and bring up the device */
9036         cfg_mode = phba->cfg_use_msi;
9037         while (true) {
9038                 /* Put device to a known state before enabling interrupt */
9039                 lpfc_stop_port(phba);
9040                 /* Configure and enable interrupt */
9041                 intr_mode = lpfc_sli4_enable_intr(phba, cfg_mode);
9042                 if (intr_mode == LPFC_INTR_ERROR) {
9043                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9044                                         "0426 Failed to enable interrupt.\n");
9045                         error = -ENODEV;
9046                         goto out_free_sysfs_attr;
9047                 }
9048                 /* Default to single EQ for non-MSI-X */
9049                 if (phba->intr_type != MSIX)
9050                         adjusted_fcp_eq_count = 0;
9051                 else if (phba->sli4_hba.msix_vec_nr <
9052                                         phba->cfg_fcp_eq_count + 1)
9053                         adjusted_fcp_eq_count = phba->sli4_hba.msix_vec_nr - 1;
9054                 else
9055                         adjusted_fcp_eq_count = phba->cfg_fcp_eq_count;
9056                 /* Free unused EQs */
9057                 for (fcp_qidx = adjusted_fcp_eq_count;
9058                      fcp_qidx < phba->cfg_fcp_eq_count;
9059                      fcp_qidx++) {
9060                         lpfc_sli4_queue_free(phba->sli4_hba.fp_eq[fcp_qidx]);
9061                         /* do not delete the first fcp_cq */
9062                         if (fcp_qidx)
9063                                 lpfc_sli4_queue_free(
9064                                         phba->sli4_hba.fcp_cq[fcp_qidx]);
9065                 }
9066                 phba->cfg_fcp_eq_count = adjusted_fcp_eq_count;
9067                 /* Set up SLI-4 HBA */
9068                 if (lpfc_sli4_hba_setup(phba)) {
9069                         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9070                                         "1421 Failed to set up hba\n");
9071                         error = -ENODEV;
9072                         goto out_disable_intr;
9073                 }
9074
9075                 /* Send NOP mbx cmds for non-INTx mode active interrupt test */
9076                 if (intr_mode != 0)
9077                         mcnt = lpfc_sli4_send_nop_mbox_cmds(phba,
9078                                                             LPFC_ACT_INTR_CNT);
9079
9080                 /* Check active interrupts received only for MSI/MSI-X */
9081                 if (intr_mode == 0 ||
9082                     phba->sli.slistat.sli_intr >= LPFC_ACT_INTR_CNT) {
9083                         /* Log the current active interrupt mode */
9084                         phba->intr_mode = intr_mode;
9085                         lpfc_log_intr_mode(phba, intr_mode);
9086                         break;
9087                 }
9088                 lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9089                                 "0451 Configure interrupt mode (%d) "
9090                                 "failed active interrupt test.\n",
9091                                 intr_mode);
9092                 /* Unset the previous SLI-4 HBA setup. */
9093                 /*
9094                  * TODO:  Is this operation compatible with IF TYPE 2
9095                  * devices?  All port state is deleted and cleared.
9096                  */
9097                 lpfc_sli4_unset_hba(phba);
9098                 /* Try next level of interrupt mode */
9099                 cfg_mode = --intr_mode;
9100         }
9101
9102         /* Perform post initialization setup */
9103         lpfc_post_init_setup(phba);
9104
9105         /* check for firmware upgrade or downgrade */
9106         snprintf(file_name, 16, "%s.grp", phba->ModelName);
9107         error = request_firmware(&fw, file_name, &phba->pcidev->dev);
9108         if (!error) {
9109                 lpfc_write_firmware(phba, fw);
9110                 release_firmware(fw);
9111         }
9112
9113         /* Check if there are static vports to be created. */
9114         lpfc_create_static_vport(phba);
9115
9116         return 0;
9117
9118 out_disable_intr:
9119         lpfc_sli4_disable_intr(phba);
9120 out_free_sysfs_attr:
9121         lpfc_free_sysfs_attr(vport);
9122 out_destroy_shost:
9123         lpfc_destroy_shost(phba);
9124 out_unset_driver_resource:
9125         lpfc_unset_driver_resource_phase2(phba);
9126 out_free_iocb_list:
9127         lpfc_free_iocb_list(phba);
9128 out_unset_driver_resource_s4:
9129         lpfc_sli4_driver_resource_unset(phba);
9130 out_unset_pci_mem_s4:
9131         lpfc_sli4_pci_mem_unset(phba);
9132 out_disable_pci_dev:
9133         lpfc_disable_pci_dev(phba);
9134         if (shost)
9135                 scsi_host_put(shost);
9136 out_free_phba:
9137         lpfc_hba_free(phba);
9138         return error;
9139 }
9140
9141 /**
9142  * lpfc_pci_remove_one_s4 - PCI func to unreg SLI-4 device from PCI subsystem
9143  * @pdev: pointer to PCI device
9144  *
9145  * This routine is called from the kernel's PCI subsystem to device with
9146  * SLI-4 interface spec. When an Emulex HBA with SLI-4 interface spec is
9147  * removed from PCI bus, it performs all the necessary cleanup for the HBA
9148  * device to be removed from the PCI subsystem properly.
9149  **/
9150 static void __devexit
9151 lpfc_pci_remove_one_s4(struct pci_dev *pdev)
9152 {
9153         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9154         struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
9155         struct lpfc_vport **vports;
9156         struct lpfc_hba *phba = vport->phba;
9157         int i;
9158
9159         /* Mark the device unloading flag */
9160         spin_lock_irq(&phba->hbalock);
9161         vport->load_flag |= FC_UNLOADING;
9162         spin_unlock_irq(&phba->hbalock);
9163
9164         /* Free the HBA sysfs attributes */
9165         lpfc_free_sysfs_attr(vport);
9166
9167         /* Release all the vports against this physical port */
9168         vports = lpfc_create_vport_work_array(phba);
9169         if (vports != NULL)
9170                 for (i = 1; i <= phba->max_vports && vports[i] != NULL; i++)
9171                         fc_vport_terminate(vports[i]->fc_vport);
9172         lpfc_destroy_vport_work_array(phba, vports);
9173
9174         /* Remove FC host and then SCSI host with the physical port */
9175         fc_remove_host(shost);
9176         scsi_remove_host(shost);
9177
9178         /* Perform cleanup on the physical port */
9179         lpfc_cleanup(vport);
9180
9181         /*
9182          * Bring down the SLI Layer. This step disables all interrupts,
9183          * clears the rings, discards all mailbox commands, and resets
9184          * the HBA FCoE function.
9185          */
9186         lpfc_debugfs_terminate(vport);
9187         lpfc_sli4_hba_unset(phba);
9188
9189         spin_lock_irq(&phba->hbalock);
9190         list_del_init(&vport->listentry);
9191         spin_unlock_irq(&phba->hbalock);
9192
9193         /* Perform scsi free before driver resource_unset since scsi
9194          * buffers are released to their corresponding pools here.
9195          */
9196         lpfc_scsi_free(phba);
9197         lpfc_sli4_driver_resource_unset(phba);
9198
9199         /* Unmap adapter Control and Doorbell registers */
9200         lpfc_sli4_pci_mem_unset(phba);
9201
9202         /* Release PCI resources and disable device's PCI function */
9203         scsi_host_put(shost);
9204         lpfc_disable_pci_dev(phba);
9205
9206         /* Finally, free the driver's device data structure */
9207         lpfc_hba_free(phba);
9208
9209         return;
9210 }
9211
9212 /**
9213  * lpfc_pci_suspend_one_s4 - PCI func to suspend SLI-4 device for power mgmnt
9214  * @pdev: pointer to PCI device
9215  * @msg: power management message
9216  *
9217  * This routine is called from the kernel's PCI subsystem to support system
9218  * Power Management (PM) to device with SLI-4 interface spec. When PM invokes
9219  * this method, it quiesces the device by stopping the driver's worker
9220  * thread for the device, turning off device's interrupt and DMA, and bring
9221  * the device offline. Note that as the driver implements the minimum PM
9222  * requirements to a power-aware driver's PM support for suspend/resume -- all
9223  * the possible PM messages (SUSPEND, HIBERNATE, FREEZE) to the suspend()
9224  * method call will be treated as SUSPEND and the driver will fully
9225  * reinitialize its device during resume() method call, the driver will set
9226  * device to PCI_D3hot state in PCI config space instead of setting it
9227  * according to the @msg provided by the PM.
9228  *
9229  * Return code
9230  *      0 - driver suspended the device
9231  *      Error otherwise
9232  **/
9233 static int
9234 lpfc_pci_suspend_one_s4(struct pci_dev *pdev, pm_message_t msg)
9235 {
9236         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9237         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9238
9239         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9240                         "2843 PCI device Power Management suspend.\n");
9241
9242         /* Bring down the device */
9243         lpfc_offline_prep(phba);
9244         lpfc_offline(phba);
9245         kthread_stop(phba->worker_thread);
9246
9247         /* Disable interrupt from device */
9248         lpfc_sli4_disable_intr(phba);
9249
9250         /* Save device state to PCI config space */
9251         pci_save_state(pdev);
9252         pci_set_power_state(pdev, PCI_D3hot);
9253
9254         return 0;
9255 }
9256
9257 /**
9258  * lpfc_pci_resume_one_s4 - PCI func to resume SLI-4 device for power mgmnt
9259  * @pdev: pointer to PCI device
9260  *
9261  * This routine is called from the kernel's PCI subsystem to support system
9262  * Power Management (PM) to device with SLI-4 interface spac. When PM invokes
9263  * this method, it restores the device's PCI config space state and fully
9264  * reinitializes the device and brings it online. Note that as the driver
9265  * implements the minimum PM requirements to a power-aware driver's PM for
9266  * suspend/resume -- all the possible PM messages (SUSPEND, HIBERNATE, FREEZE)
9267  * to the suspend() method call will be treated as SUSPEND and the driver
9268  * will fully reinitialize its device during resume() method call, the device
9269  * will be set to PCI_D0 directly in PCI config space before restoring the
9270  * state.
9271  *
9272  * Return code
9273  *      0 - driver suspended the device
9274  *      Error otherwise
9275  **/
9276 static int
9277 lpfc_pci_resume_one_s4(struct pci_dev *pdev)
9278 {
9279         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9280         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9281         uint32_t intr_mode;
9282         int error;
9283
9284         lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
9285                         "0292 PCI device Power Management resume.\n");
9286
9287         /* Restore device state from PCI config space */
9288         pci_set_power_state(pdev, PCI_D0);
9289         pci_restore_state(pdev);
9290
9291         /*
9292          * As the new kernel behavior of pci_restore_state() API call clears
9293          * device saved_state flag, need to save the restored state again.
9294          */
9295         pci_save_state(pdev);
9296
9297         if (pdev->is_busmaster)
9298                 pci_set_master(pdev);
9299
9300          /* Startup the kernel thread for this host adapter. */
9301         phba->worker_thread = kthread_run(lpfc_do_work, phba,
9302                                         "lpfc_worker_%d", phba->brd_no);
9303         if (IS_ERR(phba->worker_thread)) {
9304                 error = PTR_ERR(phba->worker_thread);
9305                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9306                                 "0293 PM resume failed to start worker "
9307                                 "thread: error=x%x.\n", error);
9308                 return error;
9309         }
9310
9311         /* Configure and enable interrupt */
9312         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9313         if (intr_mode == LPFC_INTR_ERROR) {
9314                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9315                                 "0294 PM resume Failed to enable interrupt\n");
9316                 return -EIO;
9317         } else
9318                 phba->intr_mode = intr_mode;
9319
9320         /* Restart HBA and bring it online */
9321         lpfc_sli_brdrestart(phba);
9322         lpfc_online(phba);
9323
9324         /* Log the current active interrupt mode */
9325         lpfc_log_intr_mode(phba, phba->intr_mode);
9326
9327         return 0;
9328 }
9329
9330 /**
9331  * lpfc_sli4_prep_dev_for_recover - Prepare SLI4 device for pci slot recover
9332  * @phba: pointer to lpfc hba data structure.
9333  *
9334  * This routine is called to prepare the SLI4 device for PCI slot recover. It
9335  * aborts all the outstanding SCSI I/Os to the pci device.
9336  **/
9337 static void
9338 lpfc_sli4_prep_dev_for_recover(struct lpfc_hba *phba)
9339 {
9340         struct lpfc_sli *psli = &phba->sli;
9341         struct lpfc_sli_ring  *pring;
9342
9343         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9344                         "2828 PCI channel I/O abort preparing for recovery\n");
9345         /*
9346          * There may be errored I/Os through HBA, abort all I/Os on txcmplq
9347          * and let the SCSI mid-layer to retry them to recover.
9348          */
9349         pring = &psli->ring[psli->fcp_ring];
9350         lpfc_sli_abort_iocb_ring(phba, pring);
9351 }
9352
9353 /**
9354  * lpfc_sli4_prep_dev_for_reset - Prepare SLI4 device for pci slot reset
9355  * @phba: pointer to lpfc hba data structure.
9356  *
9357  * This routine is called to prepare the SLI4 device for PCI slot reset. It
9358  * disables the device interrupt and pci device, and aborts the internal FCP
9359  * pending I/Os.
9360  **/
9361 static void
9362 lpfc_sli4_prep_dev_for_reset(struct lpfc_hba *phba)
9363 {
9364         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9365                         "2826 PCI channel disable preparing for reset\n");
9366
9367         /* Block any management I/Os to the device */
9368         lpfc_block_mgmt_io(phba);
9369
9370         /* Block all SCSI devices' I/Os on the host */
9371         lpfc_scsi_dev_block(phba);
9372
9373         /* stop all timers */
9374         lpfc_stop_hba_timers(phba);
9375
9376         /* Disable interrupt and pci device */
9377         lpfc_sli4_disable_intr(phba);
9378         pci_disable_device(phba->pcidev);
9379
9380         /* Flush all driver's outstanding SCSI I/Os as we are to reset */
9381         lpfc_sli_flush_fcp_rings(phba);
9382 }
9383
9384 /**
9385  * lpfc_sli4_prep_dev_for_perm_failure - Prepare SLI4 dev for pci slot disable
9386  * @phba: pointer to lpfc hba data structure.
9387  *
9388  * This routine is called to prepare the SLI4 device for PCI slot permanently
9389  * disabling. It blocks the SCSI transport layer traffic and flushes the FCP
9390  * pending I/Os.
9391  **/
9392 static void
9393 lpfc_sli4_prep_dev_for_perm_failure(struct lpfc_hba *phba)
9394 {
9395         lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9396                         "2827 PCI channel permanent disable for failure\n");
9397
9398         /* Block all SCSI devices' I/Os on the host */
9399         lpfc_scsi_dev_block(phba);
9400
9401         /* stop all timers */
9402         lpfc_stop_hba_timers(phba);
9403
9404         /* Clean up all driver's outstanding SCSI I/Os */
9405         lpfc_sli_flush_fcp_rings(phba);
9406 }
9407
9408 /**
9409  * lpfc_io_error_detected_s4 - Method for handling PCI I/O error to SLI-4 device
9410  * @pdev: pointer to PCI device.
9411  * @state: the current PCI connection state.
9412  *
9413  * This routine is called from the PCI subsystem for error handling to device
9414  * with SLI-4 interface spec. This function is called by the PCI subsystem
9415  * after a PCI bus error affecting this device has been detected. When this
9416  * function is invoked, it will need to stop all the I/Os and interrupt(s)
9417  * to the device. Once that is done, it will return PCI_ERS_RESULT_NEED_RESET
9418  * for the PCI subsystem to perform proper recovery as desired.
9419  *
9420  * Return codes
9421  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9422  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9423  **/
9424 static pci_ers_result_t
9425 lpfc_io_error_detected_s4(struct pci_dev *pdev, pci_channel_state_t state)
9426 {
9427         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9428         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9429
9430         switch (state) {
9431         case pci_channel_io_normal:
9432                 /* Non-fatal error, prepare for recovery */
9433                 lpfc_sli4_prep_dev_for_recover(phba);
9434                 return PCI_ERS_RESULT_CAN_RECOVER;
9435         case pci_channel_io_frozen:
9436                 /* Fatal error, prepare for slot reset */
9437                 lpfc_sli4_prep_dev_for_reset(phba);
9438                 return PCI_ERS_RESULT_NEED_RESET;
9439         case pci_channel_io_perm_failure:
9440                 /* Permanent failure, prepare for device down */
9441                 lpfc_sli4_prep_dev_for_perm_failure(phba);
9442                 return PCI_ERS_RESULT_DISCONNECT;
9443         default:
9444                 /* Unknown state, prepare and request slot reset */
9445                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9446                                 "2825 Unknown PCI error state: x%x\n", state);
9447                 lpfc_sli4_prep_dev_for_reset(phba);
9448                 return PCI_ERS_RESULT_NEED_RESET;
9449         }
9450 }
9451
9452 /**
9453  * lpfc_io_slot_reset_s4 - Method for restart PCI SLI-4 device from scratch
9454  * @pdev: pointer to PCI device.
9455  *
9456  * This routine is called from the PCI subsystem for error handling to device
9457  * with SLI-4 interface spec. It is called after PCI bus has been reset to
9458  * restart the PCI card from scratch, as if from a cold-boot. During the
9459  * PCI subsystem error recovery, after the driver returns
9460  * PCI_ERS_RESULT_NEED_RESET, the PCI subsystem will perform proper error
9461  * recovery and then call this routine before calling the .resume method to
9462  * recover the device. This function will initialize the HBA device, enable
9463  * the interrupt, but it will just put the HBA to offline state without
9464  * passing any I/O traffic.
9465  *
9466  * Return codes
9467  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9468  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9469  */
9470 static pci_ers_result_t
9471 lpfc_io_slot_reset_s4(struct pci_dev *pdev)
9472 {
9473         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9474         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9475         struct lpfc_sli *psli = &phba->sli;
9476         uint32_t intr_mode;
9477
9478         dev_printk(KERN_INFO, &pdev->dev, "recovering from a slot reset.\n");
9479         if (pci_enable_device_mem(pdev)) {
9480                 printk(KERN_ERR "lpfc: Cannot re-enable "
9481                         "PCI device after reset.\n");
9482                 return PCI_ERS_RESULT_DISCONNECT;
9483         }
9484
9485         pci_restore_state(pdev);
9486         if (pdev->is_busmaster)
9487                 pci_set_master(pdev);
9488
9489         spin_lock_irq(&phba->hbalock);
9490         psli->sli_flag &= ~LPFC_SLI_ACTIVE;
9491         spin_unlock_irq(&phba->hbalock);
9492
9493         /* Configure and enable interrupt */
9494         intr_mode = lpfc_sli4_enable_intr(phba, phba->intr_mode);
9495         if (intr_mode == LPFC_INTR_ERROR) {
9496                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9497                                 "2824 Cannot re-enable interrupt after "
9498                                 "slot reset.\n");
9499                 return PCI_ERS_RESULT_DISCONNECT;
9500         } else
9501                 phba->intr_mode = intr_mode;
9502
9503         /* Log the current active interrupt mode */
9504         lpfc_log_intr_mode(phba, phba->intr_mode);
9505
9506         return PCI_ERS_RESULT_RECOVERED;
9507 }
9508
9509 /**
9510  * lpfc_io_resume_s4 - Method for resuming PCI I/O operation to SLI-4 device
9511  * @pdev: pointer to PCI device
9512  *
9513  * This routine is called from the PCI subsystem for error handling to device
9514  * with SLI-4 interface spec. It is called when kernel error recovery tells
9515  * the lpfc driver that it is ok to resume normal PCI operation after PCI bus
9516  * error recovery. After this call, traffic can start to flow from this device
9517  * again.
9518  **/
9519 static void
9520 lpfc_io_resume_s4(struct pci_dev *pdev)
9521 {
9522         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9523         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9524
9525         /*
9526          * In case of slot reset, as function reset is performed through
9527          * mailbox command which needs DMA to be enabled, this operation
9528          * has to be moved to the io resume phase. Taking device offline
9529          * will perform the necessary cleanup.
9530          */
9531         if (!(phba->sli.sli_flag & LPFC_SLI_ACTIVE)) {
9532                 /* Perform device reset */
9533                 lpfc_offline_prep(phba);
9534                 lpfc_offline(phba);
9535                 lpfc_sli_brdrestart(phba);
9536                 /* Bring the device back online */
9537                 lpfc_online(phba);
9538         }
9539
9540         /* Clean up Advanced Error Reporting (AER) if needed */
9541         if (phba->hba_flag & HBA_AER_ENABLED)
9542                 pci_cleanup_aer_uncorrect_error_status(pdev);
9543 }
9544
9545 /**
9546  * lpfc_pci_probe_one - lpfc PCI probe func to reg dev to PCI subsystem
9547  * @pdev: pointer to PCI device
9548  * @pid: pointer to PCI device identifier
9549  *
9550  * This routine is to be registered to the kernel's PCI subsystem. When an
9551  * Emulex HBA device is presented on PCI bus, the kernel PCI subsystem looks
9552  * at PCI device-specific information of the device and driver to see if the
9553  * driver state that it can support this kind of device. If the match is
9554  * successful, the driver core invokes this routine. This routine dispatches
9555  * the action to the proper SLI-3 or SLI-4 device probing routine, which will
9556  * do all the initialization that it needs to do to handle the HBA device
9557  * properly.
9558  *
9559  * Return code
9560  *      0 - driver can claim the device
9561  *      negative value - driver can not claim the device
9562  **/
9563 static int __devinit
9564 lpfc_pci_probe_one(struct pci_dev *pdev, const struct pci_device_id *pid)
9565 {
9566         int rc;
9567         struct lpfc_sli_intf intf;
9568
9569         if (pci_read_config_dword(pdev, LPFC_SLI_INTF, &intf.word0))
9570                 return -ENODEV;
9571
9572         if ((bf_get(lpfc_sli_intf_valid, &intf) == LPFC_SLI_INTF_VALID) &&
9573             (bf_get(lpfc_sli_intf_slirev, &intf) == LPFC_SLI_INTF_REV_SLI4))
9574                 rc = lpfc_pci_probe_one_s4(pdev, pid);
9575         else
9576                 rc = lpfc_pci_probe_one_s3(pdev, pid);
9577
9578         return rc;
9579 }
9580
9581 /**
9582  * lpfc_pci_remove_one - lpfc PCI func to unreg dev from PCI subsystem
9583  * @pdev: pointer to PCI device
9584  *
9585  * This routine is to be registered to the kernel's PCI subsystem. When an
9586  * Emulex HBA is removed from PCI bus, the driver core invokes this routine.
9587  * This routine dispatches the action to the proper SLI-3 or SLI-4 device
9588  * remove routine, which will perform all the necessary cleanup for the
9589  * device to be removed from the PCI subsystem properly.
9590  **/
9591 static void __devexit
9592 lpfc_pci_remove_one(struct pci_dev *pdev)
9593 {
9594         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9595         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9596
9597         switch (phba->pci_dev_grp) {
9598         case LPFC_PCI_DEV_LP:
9599                 lpfc_pci_remove_one_s3(pdev);
9600                 break;
9601         case LPFC_PCI_DEV_OC:
9602                 lpfc_pci_remove_one_s4(pdev);
9603                 break;
9604         default:
9605                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9606                                 "1424 Invalid PCI device group: 0x%x\n",
9607                                 phba->pci_dev_grp);
9608                 break;
9609         }
9610         return;
9611 }
9612
9613 /**
9614  * lpfc_pci_suspend_one - lpfc PCI func to suspend dev for power management
9615  * @pdev: pointer to PCI device
9616  * @msg: power management message
9617  *
9618  * This routine is to be registered to the kernel's PCI subsystem to support
9619  * system Power Management (PM). When PM invokes this method, it dispatches
9620  * the action to the proper SLI-3 or SLI-4 device suspend routine, which will
9621  * suspend the device.
9622  *
9623  * Return code
9624  *      0 - driver suspended the device
9625  *      Error otherwise
9626  **/
9627 static int
9628 lpfc_pci_suspend_one(struct pci_dev *pdev, pm_message_t msg)
9629 {
9630         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9631         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9632         int rc = -ENODEV;
9633
9634         switch (phba->pci_dev_grp) {
9635         case LPFC_PCI_DEV_LP:
9636                 rc = lpfc_pci_suspend_one_s3(pdev, msg);
9637                 break;
9638         case LPFC_PCI_DEV_OC:
9639                 rc = lpfc_pci_suspend_one_s4(pdev, msg);
9640                 break;
9641         default:
9642                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9643                                 "1425 Invalid PCI device group: 0x%x\n",
9644                                 phba->pci_dev_grp);
9645                 break;
9646         }
9647         return rc;
9648 }
9649
9650 /**
9651  * lpfc_pci_resume_one - lpfc PCI func to resume dev for power management
9652  * @pdev: pointer to PCI device
9653  *
9654  * This routine is to be registered to the kernel's PCI subsystem to support
9655  * system Power Management (PM). When PM invokes this method, it dispatches
9656  * the action to the proper SLI-3 or SLI-4 device resume routine, which will
9657  * resume the device.
9658  *
9659  * Return code
9660  *      0 - driver suspended the device
9661  *      Error otherwise
9662  **/
9663 static int
9664 lpfc_pci_resume_one(struct pci_dev *pdev)
9665 {
9666         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9667         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9668         int rc = -ENODEV;
9669
9670         switch (phba->pci_dev_grp) {
9671         case LPFC_PCI_DEV_LP:
9672                 rc = lpfc_pci_resume_one_s3(pdev);
9673                 break;
9674         case LPFC_PCI_DEV_OC:
9675                 rc = lpfc_pci_resume_one_s4(pdev);
9676                 break;
9677         default:
9678                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9679                                 "1426 Invalid PCI device group: 0x%x\n",
9680                                 phba->pci_dev_grp);
9681                 break;
9682         }
9683         return rc;
9684 }
9685
9686 /**
9687  * lpfc_io_error_detected - lpfc method for handling PCI I/O error
9688  * @pdev: pointer to PCI device.
9689  * @state: the current PCI connection state.
9690  *
9691  * This routine is registered to the PCI subsystem for error handling. This
9692  * function is called by the PCI subsystem after a PCI bus error affecting
9693  * this device has been detected. When this routine is invoked, it dispatches
9694  * the action to the proper SLI-3 or SLI-4 device error detected handling
9695  * routine, which will perform the proper error detected operation.
9696  *
9697  * Return codes
9698  *      PCI_ERS_RESULT_NEED_RESET - need to reset before recovery
9699  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9700  **/
9701 static pci_ers_result_t
9702 lpfc_io_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
9703 {
9704         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9705         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9706         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9707
9708         switch (phba->pci_dev_grp) {
9709         case LPFC_PCI_DEV_LP:
9710                 rc = lpfc_io_error_detected_s3(pdev, state);
9711                 break;
9712         case LPFC_PCI_DEV_OC:
9713                 rc = lpfc_io_error_detected_s4(pdev, state);
9714                 break;
9715         default:
9716                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9717                                 "1427 Invalid PCI device group: 0x%x\n",
9718                                 phba->pci_dev_grp);
9719                 break;
9720         }
9721         return rc;
9722 }
9723
9724 /**
9725  * lpfc_io_slot_reset - lpfc method for restart PCI dev from scratch
9726  * @pdev: pointer to PCI device.
9727  *
9728  * This routine is registered to the PCI subsystem for error handling. This
9729  * function is called after PCI bus has been reset to restart the PCI card
9730  * from scratch, as if from a cold-boot. When this routine is invoked, it
9731  * dispatches the action to the proper SLI-3 or SLI-4 device reset handling
9732  * routine, which will perform the proper device reset.
9733  *
9734  * Return codes
9735  *      PCI_ERS_RESULT_RECOVERED - the device has been recovered
9736  *      PCI_ERS_RESULT_DISCONNECT - device could not be recovered
9737  **/
9738 static pci_ers_result_t
9739 lpfc_io_slot_reset(struct pci_dev *pdev)
9740 {
9741         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9742         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9743         pci_ers_result_t rc = PCI_ERS_RESULT_DISCONNECT;
9744
9745         switch (phba->pci_dev_grp) {
9746         case LPFC_PCI_DEV_LP:
9747                 rc = lpfc_io_slot_reset_s3(pdev);
9748                 break;
9749         case LPFC_PCI_DEV_OC:
9750                 rc = lpfc_io_slot_reset_s4(pdev);
9751                 break;
9752         default:
9753                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9754                                 "1428 Invalid PCI device group: 0x%x\n",
9755                                 phba->pci_dev_grp);
9756                 break;
9757         }
9758         return rc;
9759 }
9760
9761 /**
9762  * lpfc_io_resume - lpfc method for resuming PCI I/O operation
9763  * @pdev: pointer to PCI device
9764  *
9765  * This routine is registered to the PCI subsystem for error handling. It
9766  * is called when kernel error recovery tells the lpfc driver that it is
9767  * OK to resume normal PCI operation after PCI bus error recovery. When
9768  * this routine is invoked, it dispatches the action to the proper SLI-3
9769  * or SLI-4 device io_resume routine, which will resume the device operation.
9770  **/
9771 static void
9772 lpfc_io_resume(struct pci_dev *pdev)
9773 {
9774         struct Scsi_Host *shost = pci_get_drvdata(pdev);
9775         struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
9776
9777         switch (phba->pci_dev_grp) {
9778         case LPFC_PCI_DEV_LP:
9779                 lpfc_io_resume_s3(pdev);
9780                 break;
9781         case LPFC_PCI_DEV_OC:
9782                 lpfc_io_resume_s4(pdev);
9783                 break;
9784         default:
9785                 lpfc_printf_log(phba, KERN_ERR, LOG_INIT,
9786                                 "1429 Invalid PCI device group: 0x%x\n",
9787                                 phba->pci_dev_grp);
9788                 break;
9789         }
9790         return;
9791 }
9792
9793 static struct pci_device_id lpfc_id_table[] = {
9794         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_VIPER,
9795                 PCI_ANY_ID, PCI_ANY_ID, },
9796         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FIREFLY,
9797                 PCI_ANY_ID, PCI_ANY_ID, },
9798         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_THOR,
9799                 PCI_ANY_ID, PCI_ANY_ID, },
9800         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PEGASUS,
9801                 PCI_ANY_ID, PCI_ANY_ID, },
9802         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_CENTAUR,
9803                 PCI_ANY_ID, PCI_ANY_ID, },
9804         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_DRAGONFLY,
9805                 PCI_ANY_ID, PCI_ANY_ID, },
9806         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SUPERFLY,
9807                 PCI_ANY_ID, PCI_ANY_ID, },
9808         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_RFLY,
9809                 PCI_ANY_ID, PCI_ANY_ID, },
9810         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PFLY,
9811                 PCI_ANY_ID, PCI_ANY_ID, },
9812         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE,
9813                 PCI_ANY_ID, PCI_ANY_ID, },
9814         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_SCSP,
9815                 PCI_ANY_ID, PCI_ANY_ID, },
9816         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_NEPTUNE_DCSP,
9817                 PCI_ANY_ID, PCI_ANY_ID, },
9818         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS,
9819                 PCI_ANY_ID, PCI_ANY_ID, },
9820         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_SCSP,
9821                 PCI_ANY_ID, PCI_ANY_ID, },
9822         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HELIOS_DCSP,
9823                 PCI_ANY_ID, PCI_ANY_ID, },
9824         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BMID,
9825                 PCI_ANY_ID, PCI_ANY_ID, },
9826         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BSMB,
9827                 PCI_ANY_ID, PCI_ANY_ID, },
9828         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR,
9829                 PCI_ANY_ID, PCI_ANY_ID, },
9830         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_HORNET,
9831                 PCI_ANY_ID, PCI_ANY_ID, },
9832         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_SCSP,
9833                 PCI_ANY_ID, PCI_ANY_ID, },
9834         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZEPHYR_DCSP,
9835                 PCI_ANY_ID, PCI_ANY_ID, },
9836         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZMID,
9837                 PCI_ANY_ID, PCI_ANY_ID, },
9838         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_ZSMB,
9839                 PCI_ANY_ID, PCI_ANY_ID, },
9840         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_TFLY,
9841                 PCI_ANY_ID, PCI_ANY_ID, },
9842         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP101,
9843                 PCI_ANY_ID, PCI_ANY_ID, },
9844         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP10000S,
9845                 PCI_ANY_ID, PCI_ANY_ID, },
9846         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LP11000S,
9847                 PCI_ANY_ID, PCI_ANY_ID, },
9848         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LPE11000S,
9849                 PCI_ANY_ID, PCI_ANY_ID, },
9850         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT,
9851                 PCI_ANY_ID, PCI_ANY_ID, },
9852         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_MID,
9853                 PCI_ANY_ID, PCI_ANY_ID, },
9854         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SMB,
9855                 PCI_ANY_ID, PCI_ANY_ID, },
9856         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_DCSP,
9857                 PCI_ANY_ID, PCI_ANY_ID, },
9858         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_SCSP,
9859                 PCI_ANY_ID, PCI_ANY_ID, },
9860         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_SAT_S,
9861                 PCI_ANY_ID, PCI_ANY_ID, },
9862         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_VF,
9863                 PCI_ANY_ID, PCI_ANY_ID, },
9864         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_PF,
9865                 PCI_ANY_ID, PCI_ANY_ID, },
9866         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_PROTEUS_S,
9867                 PCI_ANY_ID, PCI_ANY_ID, },
9868         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TIGERSHARK,
9869                 PCI_ANY_ID, PCI_ANY_ID, },
9870         {PCI_VENDOR_ID_SERVERENGINE, PCI_DEVICE_ID_TOMCAT,
9871                 PCI_ANY_ID, PCI_ANY_ID, },
9872         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_FALCON,
9873                 PCI_ANY_ID, PCI_ANY_ID, },
9874         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_BALIUS,
9875                 PCI_ANY_ID, PCI_ANY_ID, },
9876         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC,
9877                 PCI_ANY_ID, PCI_ANY_ID, },
9878         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE,
9879                 PCI_ANY_ID, PCI_ANY_ID, },
9880         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FC_VF,
9881                 PCI_ANY_ID, PCI_ANY_ID, },
9882         {PCI_VENDOR_ID_EMULEX, PCI_DEVICE_ID_LANCER_FCOE_VF,
9883                 PCI_ANY_ID, PCI_ANY_ID, },
9884         { 0 }
9885 };
9886
9887 MODULE_DEVICE_TABLE(pci, lpfc_id_table);
9888
9889 static struct pci_error_handlers lpfc_err_handler = {
9890         .error_detected = lpfc_io_error_detected,
9891         .slot_reset = lpfc_io_slot_reset,
9892         .resume = lpfc_io_resume,
9893 };
9894
9895 static struct pci_driver lpfc_driver = {
9896         .name           = LPFC_DRIVER_NAME,
9897         .id_table       = lpfc_id_table,
9898         .probe          = lpfc_pci_probe_one,
9899         .remove         = __devexit_p(lpfc_pci_remove_one),
9900         .suspend        = lpfc_pci_suspend_one,
9901         .resume         = lpfc_pci_resume_one,
9902         .err_handler    = &lpfc_err_handler,
9903 };
9904
9905 /**
9906  * lpfc_init - lpfc module initialization routine
9907  *
9908  * This routine is to be invoked when the lpfc module is loaded into the
9909  * kernel. The special kernel macro module_init() is used to indicate the
9910  * role of this routine to the kernel as lpfc module entry point.
9911  *
9912  * Return codes
9913  *   0 - successful
9914  *   -ENOMEM - FC attach transport failed
9915  *   all others - failed
9916  */
9917 static int __init
9918 lpfc_init(void)
9919 {
9920         int error = 0;
9921
9922         printk(LPFC_MODULE_DESC "\n");
9923         printk(LPFC_COPYRIGHT "\n");
9924
9925         if (lpfc_enable_npiv) {
9926                 lpfc_transport_functions.vport_create = lpfc_vport_create;
9927                 lpfc_transport_functions.vport_delete = lpfc_vport_delete;
9928         }
9929         lpfc_transport_template =
9930                                 fc_attach_transport(&lpfc_transport_functions);
9931         if (lpfc_transport_template == NULL)
9932                 return -ENOMEM;
9933         if (lpfc_enable_npiv) {
9934                 lpfc_vport_transport_template =
9935                         fc_attach_transport(&lpfc_vport_transport_functions);
9936                 if (lpfc_vport_transport_template == NULL) {
9937                         fc_release_transport(lpfc_transport_template);
9938                         return -ENOMEM;
9939                 }
9940         }
9941         error = pci_register_driver(&lpfc_driver);
9942         if (error) {
9943                 fc_release_transport(lpfc_transport_template);
9944                 if (lpfc_enable_npiv)
9945                         fc_release_transport(lpfc_vport_transport_template);
9946         }
9947
9948         return error;
9949 }
9950
9951 /**
9952  * lpfc_exit - lpfc module removal routine
9953  *
9954  * This routine is invoked when the lpfc module is removed from the kernel.
9955  * The special kernel macro module_exit() is used to indicate the role of
9956  * this routine to the kernel as lpfc module exit point.
9957  */
9958 static void __exit
9959 lpfc_exit(void)
9960 {
9961         pci_unregister_driver(&lpfc_driver);
9962         fc_release_transport(lpfc_transport_template);
9963         if (lpfc_enable_npiv)
9964                 fc_release_transport(lpfc_vport_transport_template);
9965         if (_dump_buf_data) {
9966                 printk(KERN_ERR "9062 BLKGRD: freeing %lu pages for "
9967                                 "_dump_buf_data at 0x%p\n",
9968                                 (1L << _dump_buf_data_order), _dump_buf_data);
9969                 free_pages((unsigned long)_dump_buf_data, _dump_buf_data_order);
9970         }
9971
9972         if (_dump_buf_dif) {
9973                 printk(KERN_ERR "9049 BLKGRD: freeing %lu pages for "
9974                                 "_dump_buf_dif at 0x%p\n",
9975                                 (1L << _dump_buf_dif_order), _dump_buf_dif);
9976                 free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
9977         }
9978 }
9979
9980 module_init(lpfc_init);
9981 module_exit(lpfc_exit);
9982 MODULE_LICENSE("GPL");
9983 MODULE_DESCRIPTION(LPFC_MODULE_DESC);
9984 MODULE_AUTHOR("Emulex Corporation - tech.support@emulex.com");
9985 MODULE_VERSION("0:" LPFC_DRIVER_VERSION);