drivers/scsi/mpt2sas/mpt2sas_base.c

   1 /*
   2  * This is the Fusion MPT base driver providing common API layer interface
   3  * for access to MPT (Message Passing Technology) firmware.
   4  *
   5  * This code is based on drivers/scsi/mpt2sas/mpt2_base.c
   6  * Copyright (C) 2007-2010  LSI Corporation
   7  *  (mailto:DL-MPTFusionLinux@lsi.com)
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License
  11  * as published by the Free Software Foundation; either version 2
  12  * of the License, or (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * NO WARRANTY
  20  * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
  21  * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
  22  * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
  23  * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
  24  * solely responsible for determining the appropriateness of using and
  25  * distributing the Program and assumes all risks associated with its
  26  * exercise of rights under this Agreement, including but not limited to
  27  * the risks and costs of program errors, damage to or loss of data,
  28  * programs or equipment, and unavailability or interruption of operations.
  29
  30  * DISCLAIMER OF LIABILITY
  31  * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
  32  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  33  * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
  34  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  35  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
  36  * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
  37  * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
  38
  39  * You should have received a copy of the GNU General Public License
  40  * along with this program; if not, write to the Free Software
  41  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  42  * USA.
  43  */
  44
  45 #include <linux/kernel.h>
  46 #include <linux/module.h>
  47 #include <linux/errno.h>
  48 #include <linux/init.h>
  49 #include <linux/slab.h>
  50 #include <linux/types.h>
  51 #include <linux/pci.h>
  52 #include <linux/kdev_t.h>
  53 #include <linux/blkdev.h>
  54 #include <linux/delay.h>
  55 #include <linux/interrupt.h>
  56 #include <linux/dma-mapping.h>
  57 #include <linux/sort.h>
  58 #include <linux/io.h>
  59 #include <linux/time.h>
  60 #include <linux/kthread.h>
  61 #include <linux/aer.h>
  62
  63 #include "mpt2sas_base.h"
  64
  65 static MPT_CALLBACK     mpt_callbacks[MPT_MAX_CALLBACKS];
  66
  67 #define FAULT_POLLING_INTERVAL 1000 /* in milliseconds */
  68
  69 #define MAX_HBA_QUEUE_DEPTH     30000
  70 #define MAX_CHAIN_DEPTH         100000
  71 static int max_queue_depth = -1;
  72 module_param(max_queue_depth, int, 0);
  73 MODULE_PARM_DESC(max_queue_depth, " max controller queue depth ");
  74
  75 static int max_sgl_entries = -1;
  76 module_param(max_sgl_entries, int, 0);
  77 MODULE_PARM_DESC(max_sgl_entries, " max sg entries ");
  78
  79 static int msix_disable = -1;
  80 module_param(msix_disable, int, 0);
  81 MODULE_PARM_DESC(msix_disable, " disable msix routed interrupts (default=0)");
  82
  83 static int missing_delay[2] = {-1, -1};
  84 module_param_array(missing_delay, int, NULL, 0);
  85 MODULE_PARM_DESC(missing_delay, " device missing delay , io missing delay");
  86
  87 static int mpt2sas_fwfault_debug;
  88 MODULE_PARM_DESC(mpt2sas_fwfault_debug, " enable detection of firmware fault "
  89         "and halt firmware - (default=0)");
  90
  91 static int disable_discovery = -1;
  92 module_param(disable_discovery, int, 0);
  93 MODULE_PARM_DESC(disable_discovery, " disable discovery ");
  94
  95 /**
  96  * _scsih_set_fwfault_debug - global setting of ioc->fwfault_debug.
  97  *
  98  */
  99 static int
 100 _scsih_set_fwfault_debug(const char *val, struct kernel_param *kp)
 101 {
 102         int ret = param_set_int(val, kp);
 103         struct MPT2SAS_ADAPTER *ioc;
 104
 105         if (ret)
 106                 return ret;
 107
 108         printk(KERN_INFO "setting fwfault_debug(%d)\n", mpt2sas_fwfault_debug);
 109         list_for_each_entry(ioc, &mpt2sas_ioc_list, list)
 110                 ioc->fwfault_debug = mpt2sas_fwfault_debug;
 111         return 0;
 112 }
 113
 114 module_param_call(mpt2sas_fwfault_debug, _scsih_set_fwfault_debug,
 115     param_get_int, &mpt2sas_fwfault_debug, 0644);
 116
 117 /**
 118  *  mpt2sas_remove_dead_ioc_func - kthread context to remove dead ioc
 119  * @arg: input argument, used to derive ioc
 120  *
 121  * Return 0 if controller is removed from pci subsystem.
 122  * Return -1 for other case.
 123  */
 124 static int mpt2sas_remove_dead_ioc_func(void *arg)
 125 {
 126                 struct MPT2SAS_ADAPTER *ioc = (struct MPT2SAS_ADAPTER *)arg;
 127                 struct pci_dev *pdev;
 128
 129                 if ((ioc == NULL))
 130                         return -1;
 131
 132                 pdev = ioc->pdev;
 133                 if ((pdev == NULL))
 134                         return -1;
 135                 pci_stop_and_remove_bus_device(pdev);
 136                 return 0;
 137 }
 138
 139
 140 /**
 141  * _base_fault_reset_work - workq handling ioc fault conditions
 142  * @work: input argument, used to derive ioc
 143  * Context: sleep.
 144  *
 145  * Return nothing.
 146  */
 147 static void
 148 _base_fault_reset_work(struct work_struct *work)
 149 {
 150         struct MPT2SAS_ADAPTER *ioc =
 151             container_of(work, struct MPT2SAS_ADAPTER, fault_reset_work.work);
 152         unsigned long    flags;
 153         u32 doorbell;
 154         int rc;
 155         struct task_struct *p;
 156
 157         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 158         if (ioc->shost_recovery)
 159                 goto rearm_timer;
 160         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 161
 162         doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 163         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_MASK) {
 164                 printk(MPT2SAS_INFO_FMT "%s : SAS host is non-operational !!!!\n",
 165                         ioc->name, __func__);
 166
 167                 /*
 168                  * Call _scsih_flush_pending_cmds callback so that we flush all
 169                  * pending commands back to OS. This call is required to aovid
 170                  * deadlock at block layer. Dead IOC will fail to do diag reset,
 171                  * and this call is safe since dead ioc will never return any
 172                  * command back from HW.
 173                  */
 174                 ioc->schedule_dead_ioc_flush_running_cmds(ioc);
 175                 /*
 176                  * Set remove_host flag early since kernel thread will
 177                  * take some time to execute.
 178                  */
 179                 ioc->remove_host = 1;
 180                 /*Remove the Dead Host */
 181                 p = kthread_run(mpt2sas_remove_dead_ioc_func, ioc,
 182                     "mpt2sas_dead_ioc_%d", ioc->id);
 183                 if (IS_ERR(p)) {
 184                         printk(MPT2SAS_ERR_FMT
 185                         "%s: Running mpt2sas_dead_ioc thread failed !!!!\n",
 186                         ioc->name, __func__);
 187                 } else {
 188                     printk(MPT2SAS_ERR_FMT
 189                         "%s: Running mpt2sas_dead_ioc thread success !!!!\n",
 190                         ioc->name, __func__);
 191                 }
 192
 193                 return; /* don't rearm timer */
 194         }
 195
 196         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
 197                 rc = mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
 198                     FORCE_BIG_HAMMER);
 199                 printk(MPT2SAS_WARN_FMT "%s: hard reset: %s\n", ioc->name,
 200                     __func__, (rc == 0) ? "success" : "failed");
 201                 doorbell = mpt2sas_base_get_iocstate(ioc, 0);
 202                 if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 203                         mpt2sas_base_fault_info(ioc, doorbell &
 204                             MPI2_DOORBELL_DATA_MASK);
 205         }
 206
 207         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 208  rearm_timer:
 209         if (ioc->fault_reset_work_q)
 210                 queue_delayed_work(ioc->fault_reset_work_q,
 211                     &ioc->fault_reset_work,
 212                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 213         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 214 }
 215
 216 /**
 217  * mpt2sas_base_start_watchdog - start the fault_reset_work_q
 218  * @ioc: per adapter object
 219  * Context: sleep.
 220  *
 221  * Return nothing.
 222  */
 223 void
 224 mpt2sas_base_start_watchdog(struct MPT2SAS_ADAPTER *ioc)
 225 {
 226         unsigned long    flags;
 227
 228         if (ioc->fault_reset_work_q)
 229                 return;
 230
 231         /* initialize fault polling */
 232         INIT_DELAYED_WORK(&ioc->fault_reset_work, _base_fault_reset_work);
 233         snprintf(ioc->fault_reset_work_q_name,
 234             sizeof(ioc->fault_reset_work_q_name), "poll_%d_status", ioc->id);
 235         ioc->fault_reset_work_q =
 236                 create_singlethread_workqueue(ioc->fault_reset_work_q_name);
 237         if (!ioc->fault_reset_work_q) {
 238                 printk(MPT2SAS_ERR_FMT "%s: failed (line=%d)\n",
 239                     ioc->name, __func__, __LINE__);
 240                         return;
 241         }
 242         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 243         if (ioc->fault_reset_work_q)
 244                 queue_delayed_work(ioc->fault_reset_work_q,
 245                     &ioc->fault_reset_work,
 246                     msecs_to_jiffies(FAULT_POLLING_INTERVAL));
 247         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 248 }
 249
 250 /**
 251  * mpt2sas_base_stop_watchdog - stop the fault_reset_work_q
 252  * @ioc: per adapter object
 253  * Context: sleep.
 254  *
 255  * Return nothing.
 256  */
 257 void
 258 mpt2sas_base_stop_watchdog(struct MPT2SAS_ADAPTER *ioc)
 259 {
 260         unsigned long    flags;
 261         struct workqueue_struct *wq;
 262
 263         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
 264         wq = ioc->fault_reset_work_q;
 265         ioc->fault_reset_work_q = NULL;
 266         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
 267         if (wq) {
 268                 if (!cancel_delayed_work(&ioc->fault_reset_work))
 269                         flush_workqueue(wq);
 270                 destroy_workqueue(wq);
 271         }
 272 }
 273
 274 /**
 275  * mpt2sas_base_fault_info - verbose translation of firmware FAULT code
 276  * @ioc: per adapter object
 277  * @fault_code: fault code
 278  *
 279  * Return nothing.
 280  */
 281 void
 282 mpt2sas_base_fault_info(struct MPT2SAS_ADAPTER *ioc , u16 fault_code)
 283 {
 284         printk(MPT2SAS_ERR_FMT "fault_state(0x%04x)!\n",
 285             ioc->name, fault_code);
 286 }
 287
 288 /**
 289  * mpt2sas_halt_firmware - halt's mpt controller firmware
 290  * @ioc: per adapter object
 291  *
 292  * For debugging timeout related issues.  Writing 0xCOFFEE00
 293  * to the doorbell register will halt controller firmware. With
 294  * the purpose to stop both driver and firmware, the enduser can
 295  * obtain a ring buffer from controller UART.
 296  */
 297 void
 298 mpt2sas_halt_firmware(struct MPT2SAS_ADAPTER *ioc)
 299 {
 300         u32 doorbell;
 301
 302         if (!ioc->fwfault_debug)
 303                 return;
 304
 305         dump_stack();
 306
 307         doorbell = readl(&ioc->chip->Doorbell);
 308         if ((doorbell & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT)
 309                 mpt2sas_base_fault_info(ioc , doorbell);
 310         else {
 311                 writel(0xC0FFEE00, &ioc->chip->Doorbell);
 312                 printk(MPT2SAS_ERR_FMT "Firmware is halted due to command "
 313                     "timeout\n", ioc->name);
 314         }
 315
 316         panic("panic in %s\n", __func__);
 317 }
 318
 319 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 320 /**
 321  * _base_sas_ioc_info - verbose translation of the ioc status
 322  * @ioc: per adapter object
 323  * @mpi_reply: reply mf payload returned from firmware
 324  * @request_hdr: request mf
 325  *
 326  * Return nothing.
 327  */
 328 static void
 329 _base_sas_ioc_info(struct MPT2SAS_ADAPTER *ioc, MPI2DefaultReply_t *mpi_reply,
 330      MPI2RequestHeader_t *request_hdr)
 331 {
 332         u16 ioc_status = le16_to_cpu(mpi_reply->IOCStatus) &
 333             MPI2_IOCSTATUS_MASK;
 334         char *desc = NULL;
 335         u16 frame_sz;
 336         char *func_str = NULL;
 337
 338         /* SCSI_IO, RAID_PASS are handled from _scsih_scsi_ioc_info */
 339         if (request_hdr->Function == MPI2_FUNCTION_SCSI_IO_REQUEST ||
 340             request_hdr->Function == MPI2_FUNCTION_RAID_SCSI_IO_PASSTHROUGH ||
 341             request_hdr->Function == MPI2_FUNCTION_EVENT_NOTIFICATION)
 342                 return;
 343
 344         if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
 345                 return;
 346
 347         switch (ioc_status) {
 348
 349 /****************************************************************************
 350 *  Common IOCStatus values for all replies
 351 ****************************************************************************/
 352
 353         case MPI2_IOCSTATUS_INVALID_FUNCTION:
 354                 desc = "invalid function";
 355                 break;
 356         case MPI2_IOCSTATUS_BUSY:
 357                 desc = "busy";
 358                 break;
 359         case MPI2_IOCSTATUS_INVALID_SGL:
 360                 desc = "invalid sgl";
 361                 break;
 362         case MPI2_IOCSTATUS_INTERNAL_ERROR:
 363                 desc = "internal error";
 364                 break;
 365         case MPI2_IOCSTATUS_INVALID_VPID:
 366                 desc = "invalid vpid";
 367                 break;
 368         case MPI2_IOCSTATUS_INSUFFICIENT_RESOURCES:
 369                 desc = "insufficient resources";
 370                 break;
 371         case MPI2_IOCSTATUS_INVALID_FIELD:
 372                 desc = "invalid field";
 373                 break;
 374         case MPI2_IOCSTATUS_INVALID_STATE:
 375                 desc = "invalid state";
 376                 break;
 377         case MPI2_IOCSTATUS_OP_STATE_NOT_SUPPORTED:
 378                 desc = "op state not supported";
 379                 break;
 380
 381 /****************************************************************************
 382 *  Config IOCStatus values
 383 ****************************************************************************/
 384
 385         case MPI2_IOCSTATUS_CONFIG_INVALID_ACTION:
 386                 desc = "config invalid action";
 387                 break;
 388         case MPI2_IOCSTATUS_CONFIG_INVALID_TYPE:
 389                 desc = "config invalid type";
 390                 break;
 391         case MPI2_IOCSTATUS_CONFIG_INVALID_PAGE:
 392                 desc = "config invalid page";
 393                 break;
 394         case MPI2_IOCSTATUS_CONFIG_INVALID_DATA:
 395                 desc = "config invalid data";
 396                 break;
 397         case MPI2_IOCSTATUS_CONFIG_NO_DEFAULTS:
 398                 desc = "config no defaults";
 399                 break;
 400         case MPI2_IOCSTATUS_CONFIG_CANT_COMMIT:
 401                 desc = "config cant commit";
 402                 break;
 403
 404 /****************************************************************************
 405 *  SCSI IO Reply
 406 ****************************************************************************/
 407
 408         case MPI2_IOCSTATUS_SCSI_RECOVERED_ERROR:
 409         case MPI2_IOCSTATUS_SCSI_INVALID_DEVHANDLE:
 410         case MPI2_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
 411         case MPI2_IOCSTATUS_SCSI_DATA_OVERRUN:
 412         case MPI2_IOCSTATUS_SCSI_DATA_UNDERRUN:
 413         case MPI2_IOCSTATUS_SCSI_IO_DATA_ERROR:
 414         case MPI2_IOCSTATUS_SCSI_PROTOCOL_ERROR:
 415         case MPI2_IOCSTATUS_SCSI_TASK_TERMINATED:
 416         case MPI2_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
 417         case MPI2_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
 418         case MPI2_IOCSTATUS_SCSI_IOC_TERMINATED:
 419         case MPI2_IOCSTATUS_SCSI_EXT_TERMINATED:
 420                 break;
 421
 422 /****************************************************************************
 423 *  For use by SCSI Initiator and SCSI Target end-to-end data protection
 424 ****************************************************************************/
 425
 426         case MPI2_IOCSTATUS_EEDP_GUARD_ERROR:
 427                 desc = "eedp guard error";
 428                 break;
 429         case MPI2_IOCSTATUS_EEDP_REF_TAG_ERROR:
 430                 desc = "eedp ref tag error";
 431                 break;
 432         case MPI2_IOCSTATUS_EEDP_APP_TAG_ERROR:
 433                 desc = "eedp app tag error";
 434                 break;
 435
 436 /****************************************************************************
 437 *  SCSI Target values
 438 ****************************************************************************/
 439
 440         case MPI2_IOCSTATUS_TARGET_INVALID_IO_INDEX:
 441                 desc = "target invalid io index";
 442                 break;
 443         case MPI2_IOCSTATUS_TARGET_ABORTED:
 444                 desc = "target aborted";
 445                 break;
 446         case MPI2_IOCSTATUS_TARGET_NO_CONN_RETRYABLE:
 447                 desc = "target no conn retryable";
 448                 break;
 449         case MPI2_IOCSTATUS_TARGET_NO_CONNECTION:
 450                 desc = "target no connection";
 451                 break;
 452         case MPI2_IOCSTATUS_TARGET_XFER_COUNT_MISMATCH:
 453                 desc = "target xfer count mismatch";
 454                 break;
 455         case MPI2_IOCSTATUS_TARGET_DATA_OFFSET_ERROR:
 456                 desc = "target data offset error";
 457                 break;
 458         case MPI2_IOCSTATUS_TARGET_TOO_MUCH_WRITE_DATA:
 459                 desc = "target too much write data";
 460                 break;
 461         case MPI2_IOCSTATUS_TARGET_IU_TOO_SHORT:
 462                 desc = "target iu too short";
 463                 break;
 464         case MPI2_IOCSTATUS_TARGET_ACK_NAK_TIMEOUT:
 465                 desc = "target ack nak timeout";
 466                 break;
 467         case MPI2_IOCSTATUS_TARGET_NAK_RECEIVED:
 468                 desc = "target nak received";
 469                 break;
 470
 471 /****************************************************************************
 472 *  Serial Attached SCSI values
 473 ****************************************************************************/
 474
 475         case MPI2_IOCSTATUS_SAS_SMP_REQUEST_FAILED:
 476                 desc = "smp request failed";
 477                 break;
 478         case MPI2_IOCSTATUS_SAS_SMP_DATA_OVERRUN:
 479                 desc = "smp data overrun";
 480                 break;
 481
 482 /****************************************************************************
 483 *  Diagnostic Buffer Post / Diagnostic Release values
 484 ****************************************************************************/
 485
 486         case MPI2_IOCSTATUS_DIAGNOSTIC_RELEASED:
 487                 desc = "diagnostic released";
 488                 break;
 489         default:
 490                 break;
 491         }
 492
 493         if (!desc)
 494                 return;
 495
 496         switch (request_hdr->Function) {
 497         case MPI2_FUNCTION_CONFIG:
 498                 frame_sz = sizeof(Mpi2ConfigRequest_t) + ioc->sge_size;
 499                 func_str = "config_page";
 500                 break;
 501         case MPI2_FUNCTION_SCSI_TASK_MGMT:
 502                 frame_sz = sizeof(Mpi2SCSITaskManagementRequest_t);
 503                 func_str = "task_mgmt";
 504                 break;
 505         case MPI2_FUNCTION_SAS_IO_UNIT_CONTROL:
 506                 frame_sz = sizeof(Mpi2SasIoUnitControlRequest_t);
 507                 func_str = "sas_iounit_ctl";
 508                 break;
 509         case MPI2_FUNCTION_SCSI_ENCLOSURE_PROCESSOR:
 510                 frame_sz = sizeof(Mpi2SepRequest_t);
 511                 func_str = "enclosure";
 512                 break;
 513         case MPI2_FUNCTION_IOC_INIT:
 514                 frame_sz = sizeof(Mpi2IOCInitRequest_t);
 515                 func_str = "ioc_init";
 516                 break;
 517         case MPI2_FUNCTION_PORT_ENABLE:
 518                 frame_sz = sizeof(Mpi2PortEnableRequest_t);
 519                 func_str = "port_enable";
 520                 break;
 521         case MPI2_FUNCTION_SMP_PASSTHROUGH:
 522                 frame_sz = sizeof(Mpi2SmpPassthroughRequest_t) + ioc->sge_size;
 523                 func_str = "smp_passthru";
 524                 break;
 525         default:
 526                 frame_sz = 32;
 527                 func_str = "unknown";
 528                 break;
 529         }
 530
 531         printk(MPT2SAS_WARN_FMT "ioc_status: %s(0x%04x), request(0x%p),"
 532             " (%s)\n", ioc->name, desc, ioc_status, request_hdr, func_str);
 533
 534         _debug_dump_mf(request_hdr, frame_sz/4);
 535 }
 536
 537 /**
 538  * _base_display_event_data - verbose translation of firmware asyn events
 539  * @ioc: per adapter object
 540  * @mpi_reply: reply mf payload returned from firmware
 541  *
 542  * Return nothing.
 543  */
 544 static void
 545 _base_display_event_data(struct MPT2SAS_ADAPTER *ioc,
 546     Mpi2EventNotificationReply_t *mpi_reply)
 547 {
 548         char *desc = NULL;
 549         u16 event;
 550
 551         if (!(ioc->logging_level & MPT_DEBUG_EVENTS))
 552                 return;
 553
 554         event = le16_to_cpu(mpi_reply->Event);
 555
 556         switch (event) {
 557         case MPI2_EVENT_LOG_DATA:
 558                 desc = "Log Data";
 559                 break;
 560         case MPI2_EVENT_STATE_CHANGE:
 561                 desc = "Status Change";
 562                 break;
 563         case MPI2_EVENT_HARD_RESET_RECEIVED:
 564                 desc = "Hard Reset Received";
 565                 break;
 566         case MPI2_EVENT_EVENT_CHANGE:
 567                 desc = "Event Change";
 568                 break;
 569         case MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE:
 570                 desc = "Device Status Change";
 571                 break;
 572         case MPI2_EVENT_IR_OPERATION_STATUS:
 573                 if (!ioc->hide_ir_msg)
 574                         desc = "IR Operation Status";
 575                 break;
 576         case MPI2_EVENT_SAS_DISCOVERY:
 577         {
 578                 Mpi2EventDataSasDiscovery_t *event_data =
 579                     (Mpi2EventDataSasDiscovery_t *)mpi_reply->EventData;
 580                 printk(MPT2SAS_INFO_FMT "Discovery: (%s)", ioc->name,
 581                     (event_data->ReasonCode == MPI2_EVENT_SAS_DISC_RC_STARTED) ?
 582                     "start" : "stop");
 583                 if (event_data->DiscoveryStatus)
 584                         printk("discovery_status(0x%08x)",
 585                             le32_to_cpu(event_data->DiscoveryStatus));
 586                 printk("\n");
 587                 return;
 588         }
 589         case MPI2_EVENT_SAS_BROADCAST_PRIMITIVE:
 590                 desc = "SAS Broadcast Primitive";
 591                 break;
 592         case MPI2_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE:
 593                 desc = "SAS Init Device Status Change";
 594                 break;
 595         case MPI2_EVENT_SAS_INIT_TABLE_OVERFLOW:
 596                 desc = "SAS Init Table Overflow";
 597                 break;
 598         case MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST:
 599                 desc = "SAS Topology Change List";
 600                 break;
 601         case MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE:
 602                 desc = "SAS Enclosure Device Status Change";
 603                 break;
 604         case MPI2_EVENT_IR_VOLUME:
 605                 if (!ioc->hide_ir_msg)
 606                         desc = "IR Volume";
 607                 break;
 608         case MPI2_EVENT_IR_PHYSICAL_DISK:
 609                 if (!ioc->hide_ir_msg)
 610                         desc = "IR Physical Disk";
 611                 break;
 612         case MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST:
 613                 if (!ioc->hide_ir_msg)
 614                         desc = "IR Configuration Change List";
 615                 break;
 616         case MPI2_EVENT_LOG_ENTRY_ADDED:
 617                 if (!ioc->hide_ir_msg)
 618                         desc = "Log Entry Added";
 619                 break;
 620         }
 621
 622         if (!desc)
 623                 return;
 624
 625         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name, desc);
 626 }
 627 #endif
 628
 629 /**
 630  * _base_sas_log_info - verbose translation of firmware log info
 631  * @ioc: per adapter object
 632  * @log_info: log info
 633  *
 634  * Return nothing.
 635  */
 636 static void
 637 _base_sas_log_info(struct MPT2SAS_ADAPTER *ioc , u32 log_info)
 638 {
 639         union loginfo_type {
 640                 u32     loginfo;
 641                 struct {
 642                         u32     subcode:16;
 643                         u32     code:8;
 644                         u32     originator:4;
 645                         u32     bus_type:4;
 646                 } dw;
 647         };
 648         union loginfo_type sas_loginfo;
 649         char *originator_str = NULL;
 650
 651         sas_loginfo.loginfo = log_info;
 652         if (sas_loginfo.dw.bus_type != 3 /*SAS*/)
 653                 return;
 654
 655         /* each nexus loss loginfo */
 656         if (log_info == 0x31170000)
 657                 return;
 658
 659         /* eat the loginfos associated with task aborts */
 660         if (ioc->ignore_loginfos && (log_info == 0x30050000 || log_info ==
 661             0x31140000 || log_info == 0x31130000))
 662                 return;
 663
 664         switch (sas_loginfo.dw.originator) {
 665         case 0:
 666                 originator_str = "IOP";
 667                 break;
 668         case 1:
 669                 originator_str = "PL";
 670                 break;
 671         case 2:
 672                 if (!ioc->hide_ir_msg)
 673                         originator_str = "IR";
 674                 else
 675                         originator_str = "WarpDrive";
 676                 break;
 677         }
 678
 679         printk(MPT2SAS_WARN_FMT "log_info(0x%08x): originator(%s), "
 680             "code(0x%02x), sub_code(0x%04x)\n", ioc->name, log_info,
 681              originator_str, sas_loginfo.dw.code,
 682              sas_loginfo.dw.subcode);
 683 }
 684
 685 /**
 686  * _base_display_reply_info -
 687  * @ioc: per adapter object
 688  * @smid: system request message index
 689  * @msix_index: MSIX table index supplied by the OS
 690  * @reply: reply message frame(lower 32bit addr)
 691  *
 692  * Return nothing.
 693  */
 694 static void
 695 _base_display_reply_info(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 696     u32 reply)
 697 {
 698         MPI2DefaultReply_t *mpi_reply;
 699         u16 ioc_status;
 700
 701         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 702         if (unlikely(!mpi_reply)) {
 703                 printk(MPT2SAS_ERR_FMT "mpi_reply not valid at %s:%d/%s()!\n",
 704                         ioc->name, __FILE__, __LINE__, __func__);
 705                 return;
 706         }
 707         ioc_status = le16_to_cpu(mpi_reply->IOCStatus);
 708 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 709         if ((ioc_status & MPI2_IOCSTATUS_MASK) &&
 710             (ioc->logging_level & MPT_DEBUG_REPLY)) {
 711                 _base_sas_ioc_info(ioc , mpi_reply,
 712                    mpt2sas_base_get_msg_frame(ioc, smid));
 713         }
 714 #endif
 715         if (ioc_status & MPI2_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE)
 716                 _base_sas_log_info(ioc, le32_to_cpu(mpi_reply->IOCLogInfo));
 717 }
 718
 719 /**
 720  * mpt2sas_base_done - base internal command completion routine
 721  * @ioc: per adapter object
 722  * @smid: system request message index
 723  * @msix_index: MSIX table index supplied by the OS
 724  * @reply: reply message frame(lower 32bit addr)
 725  *
 726  * Return 1 meaning mf should be freed from _base_interrupt
 727  *        0 means the mf is freed from this function.
 728  */
 729 u8
 730 mpt2sas_base_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
 731     u32 reply)
 732 {
 733         MPI2DefaultReply_t *mpi_reply;
 734
 735         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 736         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
 737                 return 1;
 738
 739         if (ioc->base_cmds.status == MPT2_CMD_NOT_USED)
 740                 return 1;
 741
 742         ioc->base_cmds.status |= MPT2_CMD_COMPLETE;
 743         if (mpi_reply) {
 744                 ioc->base_cmds.status |= MPT2_CMD_REPLY_VALID;
 745                 memcpy(ioc->base_cmds.reply, mpi_reply, mpi_reply->MsgLength*4);
 746         }
 747         ioc->base_cmds.status &= ~MPT2_CMD_PENDING;
 748
 749         complete(&ioc->base_cmds.done);
 750         return 1;
 751 }
 752
 753 /**
 754  * _base_async_event - main callback handler for firmware asyn events
 755  * @ioc: per adapter object
 756  * @msix_index: MSIX table index supplied by the OS
 757  * @reply: reply message frame(lower 32bit addr)
 758  *
 759  * Return 1 meaning mf should be freed from _base_interrupt
 760  *        0 means the mf is freed from this function.
 761  */
 762 static u8
 763 _base_async_event(struct MPT2SAS_ADAPTER *ioc, u8 msix_index, u32 reply)
 764 {
 765         Mpi2EventNotificationReply_t *mpi_reply;
 766         Mpi2EventAckRequest_t *ack_request;
 767         u16 smid;
 768
 769         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
 770         if (!mpi_reply)
 771                 return 1;
 772         if (mpi_reply->Function != MPI2_FUNCTION_EVENT_NOTIFICATION)
 773                 return 1;
 774 #ifdef CONFIG_SCSI_MPT2SAS_LOGGING
 775         _base_display_event_data(ioc, mpi_reply);
 776 #endif
 777         if (!(mpi_reply->AckRequired & MPI2_EVENT_NOTIFICATION_ACK_REQUIRED))
 778                 goto out;
 779         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
 780         if (!smid) {
 781                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
 782                     ioc->name, __func__);
 783                 goto out;
 784         }
 785
 786         ack_request = mpt2sas_base_get_msg_frame(ioc, smid);
 787         memset(ack_request, 0, sizeof(Mpi2EventAckRequest_t));
 788         ack_request->Function = MPI2_FUNCTION_EVENT_ACK;
 789         ack_request->Event = mpi_reply->Event;
 790         ack_request->EventContext = mpi_reply->EventContext;
 791         ack_request->VF_ID = 0;  /* TODO */
 792         ack_request->VP_ID = 0;
 793         mpt2sas_base_put_smid_default(ioc, smid);
 794
 795  out:
 796
 797         /* scsih callback handler */
 798         mpt2sas_scsih_event_callback(ioc, msix_index, reply);
 799
 800         /* ctl callback handler */
 801         mpt2sas_ctl_event_callback(ioc, msix_index, reply);
 802
 803         return 1;
 804 }
 805
 806 /**
 807  * _base_get_cb_idx - obtain the callback index
 808  * @ioc: per adapter object
 809  * @smid: system request message index
 810  *
 811  * Return callback index.
 812  */
 813 static u8
 814 _base_get_cb_idx(struct MPT2SAS_ADAPTER *ioc, u16 smid)
 815 {
 816         int i;
 817         u8 cb_idx;
 818
 819         if (smid < ioc->hi_priority_smid) {
 820                 i = smid - 1;
 821                 cb_idx = ioc->scsi_lookup[i].cb_idx;
 822         } else if (smid < ioc->internal_smid) {
 823                 i = smid - ioc->hi_priority_smid;
 824                 cb_idx = ioc->hpr_lookup[i].cb_idx;
 825         } else if (smid <= ioc->hba_queue_depth) {
 826                 i = smid - ioc->internal_smid;
 827                 cb_idx = ioc->internal_lookup[i].cb_idx;
 828         } else
 829                 cb_idx = 0xFF;
 830         return cb_idx;
 831 }
 832
 833 /**
 834  * _base_mask_interrupts - disable interrupts
 835  * @ioc: per adapter object
 836  *
 837  * Disabling ResetIRQ, Reply and Doorbell Interrupts
 838  *
 839  * Return nothing.
 840  */
 841 static void
 842 _base_mask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 843 {
 844         u32 him_register;
 845
 846         ioc->mask_interrupts = 1;
 847         him_register = readl(&ioc->chip->HostInterruptMask);
 848         him_register |= MPI2_HIM_DIM + MPI2_HIM_RIM + MPI2_HIM_RESET_IRQ_MASK;
 849         writel(him_register, &ioc->chip->HostInterruptMask);
 850         readl(&ioc->chip->HostInterruptMask);
 851 }
 852
 853 /**
 854  * _base_unmask_interrupts - enable interrupts
 855  * @ioc: per adapter object
 856  *
 857  * Enabling only Reply Interrupts
 858  *
 859  * Return nothing.
 860  */
 861 static void
 862 _base_unmask_interrupts(struct MPT2SAS_ADAPTER *ioc)
 863 {
 864         u32 him_register;
 865
 866         him_register = readl(&ioc->chip->HostInterruptMask);
 867         him_register &= ~MPI2_HIM_RIM;
 868         writel(him_register, &ioc->chip->HostInterruptMask);
 869         ioc->mask_interrupts = 0;
 870 }
 871
 872 union reply_descriptor {
 873         u64 word;
 874         struct {
 875                 u32 low;
 876                 u32 high;
 877         } u;
 878 };
 879
 880 /**
 881  * _base_interrupt - MPT adapter (IOC) specific interrupt handler.
 882  * @irq: irq number (not used)
 883  * @bus_id: bus identifier cookie == pointer to MPT_ADAPTER structure
 884  * @r: pt_regs pointer (not used)
 885  *
 886  * Return IRQ_HANDLE if processed, else IRQ_NONE.
 887  */
 888 static irqreturn_t
 889 _base_interrupt(int irq, void *bus_id)
 890 {
 891         struct adapter_reply_queue *reply_q = bus_id;
 892         union reply_descriptor rd;
 893         u32 completed_cmds;
 894         u8 request_desript_type;
 895         u16 smid;
 896         u8 cb_idx;
 897         u32 reply;
 898         u8 msix_index = reply_q->msix_index;
 899         struct MPT2SAS_ADAPTER *ioc = reply_q->ioc;
 900         Mpi2ReplyDescriptorsUnion_t *rpf;
 901         u8 rc;
 902
 903         if (ioc->mask_interrupts)
 904                 return IRQ_NONE;
 905
 906         if (!atomic_add_unless(&reply_q->busy, 1, 1))
 907                 return IRQ_NONE;
 908
 909         rpf = &reply_q->reply_post_free[reply_q->reply_post_host_index];
 910         request_desript_type = rpf->Default.ReplyFlags
 911              & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 912         if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED) {
 913                 atomic_dec(&reply_q->busy);
 914                 return IRQ_NONE;
 915         }
 916
 917         completed_cmds = 0;
 918         cb_idx = 0xFF;
 919         do {
 920                 rd.word = le64_to_cpu(rpf->Words);
 921                 if (rd.u.low == UINT_MAX || rd.u.high == UINT_MAX)
 922                         goto out;
 923                 reply = 0;
 924                 smid = le16_to_cpu(rpf->Default.DescriptorTypeDependent1);
 925                 if (request_desript_type ==
 926                     MPI2_RPY_DESCRIPT_FLAGS_ADDRESS_REPLY) {
 927                         reply = le32_to_cpu
 928                                 (rpf->AddressReply.ReplyFrameAddress);
 929                         if (reply > ioc->reply_dma_max_address ||
 930                             reply < ioc->reply_dma_min_address)
 931                                 reply = 0;
 932                 } else if (request_desript_type ==
 933                     MPI2_RPY_DESCRIPT_FLAGS_TARGET_COMMAND_BUFFER)
 934                         goto next;
 935                 else if (request_desript_type ==
 936                     MPI2_RPY_DESCRIPT_FLAGS_TARGETASSIST_SUCCESS)
 937                         goto next;
 938                 if (smid) {
 939                         cb_idx = _base_get_cb_idx(ioc, smid);
 940                 if ((likely(cb_idx < MPT_MAX_CALLBACKS))
 941                             && (likely(mpt_callbacks[cb_idx] != NULL))) {
 942                                 rc = mpt_callbacks[cb_idx](ioc, smid,
 943                                     msix_index, reply);
 944                         if (reply)
 945                                 _base_display_reply_info(ioc, smid,
 946                                     msix_index, reply);
 947                         if (rc)
 948                                 mpt2sas_base_free_smid(ioc, smid);
 949                         }
 950                 }
 951                 if (!smid)
 952                         _base_async_event(ioc, msix_index, reply);
 953
 954                 /* reply free queue handling */
 955                 if (reply) {
 956                         ioc->reply_free_host_index =
 957                             (ioc->reply_free_host_index ==
 958                             (ioc->reply_free_queue_depth - 1)) ?
 959                             0 : ioc->reply_free_host_index + 1;
 960                         ioc->reply_free[ioc->reply_free_host_index] =
 961                             cpu_to_le32(reply);
 962                         wmb();
 963                         writel(ioc->reply_free_host_index,
 964                             &ioc->chip->ReplyFreeHostIndex);
 965                 }
 966
 967  next:
 968
 969                 rpf->Words = cpu_to_le64(ULLONG_MAX);
 970                 reply_q->reply_post_host_index =
 971                     (reply_q->reply_post_host_index ==
 972                     (ioc->reply_post_queue_depth - 1)) ? 0 :
 973                     reply_q->reply_post_host_index + 1;
 974                 request_desript_type =
 975                     reply_q->reply_post_free[reply_q->reply_post_host_index].
 976                     Default.ReplyFlags & MPI2_RPY_DESCRIPT_FLAGS_TYPE_MASK;
 977                 completed_cmds++;
 978                 if (request_desript_type == MPI2_RPY_DESCRIPT_FLAGS_UNUSED)
 979                         goto out;
 980                 if (!reply_q->reply_post_host_index)
 981                         rpf = reply_q->reply_post_free;
 982                 else
 983                         rpf++;
 984         } while (1);
 985
 986  out:
 987
 988         if (!completed_cmds) {
 989                 atomic_dec(&reply_q->busy);
 990                 return IRQ_NONE;
 991         }
 992         wmb();
 993         if (ioc->is_warpdrive) {
 994                 writel(reply_q->reply_post_host_index,
 995                 ioc->reply_post_host_index[msix_index]);
 996                 atomic_dec(&reply_q->busy);
 997                 return IRQ_HANDLED;
 998         }
 999         writel(reply_q->reply_post_host_index | (msix_index <<
1000             MPI2_RPHI_MSIX_INDEX_SHIFT), &ioc->chip->ReplyPostHostIndex);
1001         atomic_dec(&reply_q->busy);
1002         return IRQ_HANDLED;
1003 }
1004
1005 /**
1006  * _base_is_controller_msix_enabled - is controller support muli-reply queues
1007  * @ioc: per adapter object
1008  *
1009  */
1010 static inline int
1011 _base_is_controller_msix_enabled(struct MPT2SAS_ADAPTER *ioc)
1012 {
1013         return (ioc->facts.IOCCapabilities &
1014             MPI2_IOCFACTS_CAPABILITY_MSI_X_INDEX) && ioc->msix_enable;
1015 }
1016
1017 /**
1018  * mpt2sas_base_flush_reply_queues - flushing the MSIX reply queues
1019  * @ioc: per adapter object
1020  * Context: ISR conext
1021  *
1022  * Called when a Task Management request has completed. We want
1023  * to flush the other reply queues so all the outstanding IO has been
1024  * completed back to OS before we process the TM completetion.
1025  *
1026  * Return nothing.
1027  */
1028 void
1029 mpt2sas_base_flush_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1030 {
1031         struct adapter_reply_queue *reply_q;
1032
1033         /* If MSIX capability is turned off
1034          * then multi-queues are not enabled
1035          */
1036         if (!_base_is_controller_msix_enabled(ioc))
1037                 return;
1038
1039         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
1040                 if (ioc->shost_recovery)
1041                         return;
1042                 /* TMs are on msix_index == 0 */
1043                 if (reply_q->msix_index == 0)
1044                         continue;
1045                 _base_interrupt(reply_q->vector, (void *)reply_q);
1046         }
1047 }
1048
1049 /**
1050  * mpt2sas_base_release_callback_handler - clear interrupt callback handler
1051  * @cb_idx: callback index
1052  *
1053  * Return nothing.
1054  */
1055 void
1056 mpt2sas_base_release_callback_handler(u8 cb_idx)
1057 {
1058         mpt_callbacks[cb_idx] = NULL;
1059 }
1060
1061 /**
1062  * mpt2sas_base_register_callback_handler - obtain index for the interrupt callback handler
1063  * @cb_func: callback function
1064  *
1065  * Returns cb_func.
1066  */
1067 u8
1068 mpt2sas_base_register_callback_handler(MPT_CALLBACK cb_func)
1069 {
1070         u8 cb_idx;
1071
1072         for (cb_idx = MPT_MAX_CALLBACKS-1; cb_idx; cb_idx--)
1073                 if (mpt_callbacks[cb_idx] == NULL)
1074                         break;
1075
1076         mpt_callbacks[cb_idx] = cb_func;
1077         return cb_idx;
1078 }
1079
1080 /**
1081  * mpt2sas_base_initialize_callback_handler - initialize the interrupt callback handler
1082  *
1083  * Return nothing.
1084  */
1085 void
1086 mpt2sas_base_initialize_callback_handler(void)
1087 {
1088         u8 cb_idx;
1089
1090         for (cb_idx = 0; cb_idx < MPT_MAX_CALLBACKS; cb_idx++)
1091                 mpt2sas_base_release_callback_handler(cb_idx);
1092 }
1093
1094 /**
1095  * mpt2sas_base_build_zero_len_sge - build zero length sg entry
1096  * @ioc: per adapter object
1097  * @paddr: virtual address for SGE
1098  *
1099  * Create a zero length scatter gather entry to insure the IOCs hardware has
1100  * something to use if the target device goes brain dead and tries
1101  * to send data even when none is asked for.
1102  *
1103  * Return nothing.
1104  */
1105 void
1106 mpt2sas_base_build_zero_len_sge(struct MPT2SAS_ADAPTER *ioc, void *paddr)
1107 {
1108         u32 flags_length = (u32)((MPI2_SGE_FLAGS_LAST_ELEMENT |
1109             MPI2_SGE_FLAGS_END_OF_BUFFER | MPI2_SGE_FLAGS_END_OF_LIST |
1110             MPI2_SGE_FLAGS_SIMPLE_ELEMENT) <<
1111             MPI2_SGE_FLAGS_SHIFT);
1112         ioc->base_add_sg_single(paddr, flags_length, -1);
1113 }
1114
1115 /**
1116  * _base_add_sg_single_32 - Place a simple 32 bit SGE at address pAddr.
1117  * @paddr: virtual address for SGE
1118  * @flags_length: SGE flags and data transfer length
1119  * @dma_addr: Physical address
1120  *
1121  * Return nothing.
1122  */
1123 static void
1124 _base_add_sg_single_32(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1125 {
1126         Mpi2SGESimple32_t *sgel = paddr;
1127
1128         flags_length |= (MPI2_SGE_FLAGS_32_BIT_ADDRESSING |
1129             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1130         sgel->FlagsLength = cpu_to_le32(flags_length);
1131         sgel->Address = cpu_to_le32(dma_addr);
1132 }
1133
1134
1135 /**
1136  * _base_add_sg_single_64 - Place a simple 64 bit SGE at address pAddr.
1137  * @paddr: virtual address for SGE
1138  * @flags_length: SGE flags and data transfer length
1139  * @dma_addr: Physical address
1140  *
1141  * Return nothing.
1142  */
1143 static void
1144 _base_add_sg_single_64(void *paddr, u32 flags_length, dma_addr_t dma_addr)
1145 {
1146         Mpi2SGESimple64_t *sgel = paddr;
1147
1148         flags_length |= (MPI2_SGE_FLAGS_64_BIT_ADDRESSING |
1149             MPI2_SGE_FLAGS_SYSTEM_ADDRESS) << MPI2_SGE_FLAGS_SHIFT;
1150         sgel->FlagsLength = cpu_to_le32(flags_length);
1151         sgel->Address = cpu_to_le64(dma_addr);
1152 }
1153
1154 #define convert_to_kb(x) ((x) << (PAGE_SHIFT - 10))
1155
1156 /**
1157  * _base_config_dma_addressing - set dma addressing
1158  * @ioc: per adapter object
1159  * @pdev: PCI device struct
1160  *
1161  * Returns 0 for success, non-zero for failure.
1162  */
1163 static int
1164 _base_config_dma_addressing(struct MPT2SAS_ADAPTER *ioc, struct pci_dev *pdev)
1165 {
1166         struct sysinfo s;
1167         char *desc = NULL;
1168
1169         if (sizeof(dma_addr_t) > 4) {
1170                 const uint64_t required_mask =
1171                     dma_get_required_mask(&pdev->dev);
1172                 if ((required_mask > DMA_BIT_MASK(32)) && !pci_set_dma_mask(pdev,
1173                     DMA_BIT_MASK(64)) && !pci_set_consistent_dma_mask(pdev,
1174                     DMA_BIT_MASK(64))) {
1175                         ioc->base_add_sg_single = &_base_add_sg_single_64;
1176                         ioc->sge_size = sizeof(Mpi2SGESimple64_t);
1177                         desc = "64";
1178                         goto out;
1179                 }
1180         }
1181
1182         if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
1183             && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
1184                 ioc->base_add_sg_single = &_base_add_sg_single_32;
1185                 ioc->sge_size = sizeof(Mpi2SGESimple32_t);
1186                 desc = "32";
1187         } else
1188                 return -ENODEV;
1189
1190  out:
1191         si_meminfo(&s);
1192         printk(MPT2SAS_INFO_FMT "%s BIT PCI BUS DMA ADDRESSING SUPPORTED, "
1193             "total mem (%ld kB)\n", ioc->name, desc, convert_to_kb(s.totalram));
1194
1195         return 0;
1196 }
1197
1198 /**
1199  * _base_check_enable_msix - checks MSIX capabable.
1200  * @ioc: per adapter object
1201  *
1202  * Check to see if card is capable of MSIX, and set number
1203  * of available msix vectors
1204  */
1205 static int
1206 _base_check_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1207 {
1208         int base;
1209         u16 message_control;
1210
1211
1212         /* Check whether controller SAS2008 B0 controller,
1213            if it is SAS2008 B0 controller use IO-APIC instead of MSIX */
1214         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 &&
1215             ioc->pdev->revision == 0x01) {
1216                 return -EINVAL;
1217         }
1218
1219         base = pci_find_capability(ioc->pdev, PCI_CAP_ID_MSIX);
1220         if (!base) {
1221                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "msix not "
1222                     "supported\n", ioc->name));
1223                 return -EINVAL;
1224         }
1225
1226         /* get msix vector count */
1227         /* NUMA_IO not supported for older controllers */
1228         if (ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2004 ||
1229             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2008 ||
1230             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_1 ||
1231             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_2 ||
1232             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2108_3 ||
1233             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_1 ||
1234             ioc->pdev->device == MPI2_MFGPAGE_DEVID_SAS2116_2)
1235                 ioc->msix_vector_count = 1;
1236         else {
1237                 pci_read_config_word(ioc->pdev, base + 2, &message_control);
1238                 ioc->msix_vector_count = (message_control & 0x3FF) + 1;
1239         }
1240         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "msix is supported, "
1241             "vector_count(%d)\n", ioc->name, ioc->msix_vector_count));
1242
1243         return 0;
1244 }
1245
1246 /**
1247  * _base_free_irq - free irq
1248  * @ioc: per adapter object
1249  *
1250  * Freeing respective reply_queue from the list.
1251  */
1252 static void
1253 _base_free_irq(struct MPT2SAS_ADAPTER *ioc)
1254 {
1255         struct adapter_reply_queue *reply_q, *next;
1256
1257         if (list_empty(&ioc->reply_queue_list))
1258                 return;
1259
1260         list_for_each_entry_safe(reply_q, next, &ioc->reply_queue_list, list) {
1261                 list_del(&reply_q->list);
1262                 synchronize_irq(reply_q->vector);
1263                 free_irq(reply_q->vector, reply_q);
1264                 kfree(reply_q);
1265         }
1266 }
1267
1268 /**
1269  * _base_request_irq - request irq
1270  * @ioc: per adapter object
1271  * @index: msix index into vector table
1272  * @vector: irq vector
1273  *
1274  * Inserting respective reply_queue into the list.
1275  */
1276 static int
1277 _base_request_irq(struct MPT2SAS_ADAPTER *ioc, u8 index, u32 vector)
1278 {
1279         struct adapter_reply_queue *reply_q;
1280         int r;
1281
1282         reply_q =  kzalloc(sizeof(struct adapter_reply_queue), GFP_KERNEL);
1283         if (!reply_q) {
1284                 printk(MPT2SAS_ERR_FMT "unable to allocate memory %d!\n",
1285                     ioc->name, (int)sizeof(struct adapter_reply_queue));
1286                 return -ENOMEM;
1287         }
1288         reply_q->ioc = ioc;
1289         reply_q->msix_index = index;
1290         reply_q->vector = vector;
1291         atomic_set(&reply_q->busy, 0);
1292         if (ioc->msix_enable)
1293                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d-msix%d",
1294                     MPT2SAS_DRIVER_NAME, ioc->id, index);
1295         else
1296                 snprintf(reply_q->name, MPT_NAME_LENGTH, "%s%d",
1297                     MPT2SAS_DRIVER_NAME, ioc->id);
1298         r = request_irq(vector, _base_interrupt, IRQF_SHARED, reply_q->name,
1299             reply_q);
1300         if (r) {
1301                 printk(MPT2SAS_ERR_FMT "unable to allocate interrupt %d!\n",
1302                     reply_q->name, vector);
1303                 kfree(reply_q);
1304                 return -EBUSY;
1305         }
1306
1307         INIT_LIST_HEAD(&reply_q->list);
1308         list_add_tail(&reply_q->list, &ioc->reply_queue_list);
1309         return 0;
1310 }
1311
1312 /**
1313  * _base_assign_reply_queues - assigning msix index for each cpu
1314  * @ioc: per adapter object
1315  *
1316  * The enduser would need to set the affinity via /proc/irq/#/smp_affinity
1317  *
1318  * It would nice if we could call irq_set_affinity, however it is not
1319  * an exported symbol
1320  */
1321 static void
1322 _base_assign_reply_queues(struct MPT2SAS_ADAPTER *ioc)
1323 {
1324         struct adapter_reply_queue *reply_q;
1325         int cpu_id;
1326         int cpu_grouping, loop, grouping, grouping_mod;
1327
1328         if (!_base_is_controller_msix_enabled(ioc))
1329                 return;
1330
1331         memset(ioc->cpu_msix_table, 0, ioc->cpu_msix_table_sz);
1332         /* when there are more cpus than available msix vectors,
1333          * then group cpus togeather on same irq
1334          */
1335         if (ioc->cpu_count > ioc->msix_vector_count) {
1336                 grouping = ioc->cpu_count / ioc->msix_vector_count;
1337                 grouping_mod = ioc->cpu_count % ioc->msix_vector_count;
1338                 if (grouping < 2 || (grouping == 2 && !grouping_mod))
1339                         cpu_grouping = 2;
1340                 else if (grouping < 4 || (grouping == 4 && !grouping_mod))
1341                         cpu_grouping = 4;
1342                 else if (grouping < 8 || (grouping == 8 && !grouping_mod))
1343                         cpu_grouping = 8;
1344                 else
1345                         cpu_grouping = 16;
1346         } else
1347                 cpu_grouping = 0;
1348
1349         loop = 0;
1350         reply_q = list_entry(ioc->reply_queue_list.next,
1351              struct adapter_reply_queue, list);
1352         for_each_online_cpu(cpu_id) {
1353                 if (!cpu_grouping) {
1354                         ioc->cpu_msix_table[cpu_id] = reply_q->msix_index;
1355                         reply_q = list_entry(reply_q->list.next,
1356                             struct adapter_reply_queue, list);
1357                 } else {
1358                         if (loop < cpu_grouping) {
1359                                 ioc->cpu_msix_table[cpu_id] =
1360                                         reply_q->msix_index;
1361                                 loop++;
1362                         } else {
1363                                 reply_q = list_entry(reply_q->list.next,
1364                                     struct adapter_reply_queue, list);
1365                                 ioc->cpu_msix_table[cpu_id] =
1366                                         reply_q->msix_index;
1367                                 loop = 1;
1368                         }
1369                 }
1370         }
1371 }
1372
1373 /**
1374  * _base_disable_msix - disables msix
1375  * @ioc: per adapter object
1376  *
1377  */
1378 static void
1379 _base_disable_msix(struct MPT2SAS_ADAPTER *ioc)
1380 {
1381         if (ioc->msix_enable) {
1382                 pci_disable_msix(ioc->pdev);
1383                 ioc->msix_enable = 0;
1384         }
1385 }
1386
1387 /**
1388  * _base_enable_msix - enables msix, failback to io_apic
1389  * @ioc: per adapter object
1390  *
1391  */
1392 static int
1393 _base_enable_msix(struct MPT2SAS_ADAPTER *ioc)
1394 {
1395         struct msix_entry *entries, *a;
1396         int r;
1397         int i;
1398         u8 try_msix = 0;
1399
1400         INIT_LIST_HEAD(&ioc->reply_queue_list);
1401
1402         if (msix_disable == -1 || msix_disable == 0)
1403                 try_msix = 1;
1404
1405         if (!try_msix)
1406                 goto try_ioapic;
1407
1408         if (_base_check_enable_msix(ioc) != 0)
1409                 goto try_ioapic;
1410
1411         ioc->reply_queue_count = min_t(int, ioc->cpu_count,
1412             ioc->msix_vector_count);
1413
1414         entries = kcalloc(ioc->reply_queue_count, sizeof(struct msix_entry),
1415             GFP_KERNEL);
1416         if (!entries) {
1417                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "kcalloc "
1418                     "failed @ at %s:%d/%s() !!!\n", ioc->name, __FILE__,
1419                     __LINE__, __func__));
1420                 goto try_ioapic;
1421         }
1422
1423         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++)
1424                 a->entry = i;
1425
1426         r = pci_enable_msix(ioc->pdev, entries, ioc->reply_queue_count);
1427         if (r) {
1428                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "pci_enable_msix "
1429                     "failed (r=%d) !!!\n", ioc->name, r));
1430                 kfree(entries);
1431                 goto try_ioapic;
1432         }
1433
1434         ioc->msix_enable = 1;
1435         for (i = 0, a = entries; i < ioc->reply_queue_count; i++, a++) {
1436                 r = _base_request_irq(ioc, i, a->vector);
1437                 if (r) {
1438                         _base_free_irq(ioc);
1439                         _base_disable_msix(ioc);
1440                         kfree(entries);
1441                         goto try_ioapic;
1442                 }
1443         }
1444
1445         kfree(entries);
1446         return 0;
1447
1448 /* failback to io_apic interrupt routing */
1449  try_ioapic:
1450
1451         r = _base_request_irq(ioc, 0, ioc->pdev->irq);
1452
1453         return r;
1454 }
1455
1456 /**
1457  * mpt2sas_base_map_resources - map in controller resources (io/irq/memap)
1458  * @ioc: per adapter object
1459  *
1460  * Returns 0 for success, non-zero for failure.
1461  */
1462 int
1463 mpt2sas_base_map_resources(struct MPT2SAS_ADAPTER *ioc)
1464 {
1465         struct pci_dev *pdev = ioc->pdev;
1466         u32 memap_sz;
1467         u32 pio_sz;
1468         int i, r = 0;
1469         u64 pio_chip = 0;
1470         u64 chip_phys = 0;
1471         struct adapter_reply_queue *reply_q;
1472
1473         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n",
1474             ioc->name, __func__));
1475
1476         ioc->bars = pci_select_bars(pdev, IORESOURCE_MEM);
1477         if (pci_enable_device_mem(pdev)) {
1478                 printk(MPT2SAS_WARN_FMT "pci_enable_device_mem: "
1479                     "failed\n", ioc->name);
1480                 return -ENODEV;
1481         }
1482
1483
1484         if (pci_request_selected_regions(pdev, ioc->bars,
1485             MPT2SAS_DRIVER_NAME)) {
1486                 printk(MPT2SAS_WARN_FMT "pci_request_selected_regions: "
1487                     "failed\n", ioc->name);
1488                 r = -ENODEV;
1489                 goto out_fail;
1490         }
1491
1492         /* AER (Advanced Error Reporting) hooks */
1493         pci_enable_pcie_error_reporting(pdev);
1494
1495         pci_set_master(pdev);
1496
1497         if (_base_config_dma_addressing(ioc, pdev) != 0) {
1498                 printk(MPT2SAS_WARN_FMT "no suitable DMA mask for %s\n",
1499                     ioc->name, pci_name(pdev));
1500                 r = -ENODEV;
1501                 goto out_fail;
1502         }
1503
1504         for (i = 0, memap_sz = 0, pio_sz = 0 ; i < DEVICE_COUNT_RESOURCE; i++) {
1505                 if (pci_resource_flags(pdev, i) & IORESOURCE_IO) {
1506                         if (pio_sz)
1507                                 continue;
1508                         pio_chip = (u64)pci_resource_start(pdev, i);
1509                         pio_sz = pci_resource_len(pdev, i);
1510                 } else {
1511                         if (memap_sz)
1512                                 continue;
1513                         /* verify memory resource is valid before using */
1514                         if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) {
1515                                 ioc->chip_phys = pci_resource_start(pdev, i);
1516                                 chip_phys = (u64)ioc->chip_phys;
1517                                 memap_sz = pci_resource_len(pdev, i);
1518                                 ioc->chip = ioremap(ioc->chip_phys, memap_sz);
1519                                 if (ioc->chip == NULL) {
1520                                         printk(MPT2SAS_ERR_FMT "unable to map "
1521                                             "adapter memory!\n", ioc->name);
1522                                         r = -EINVAL;
1523                                         goto out_fail;
1524                                 }
1525                         }
1526                 }
1527         }
1528
1529         _base_mask_interrupts(ioc);
1530         r = _base_enable_msix(ioc);
1531         if (r)
1532                 goto out_fail;
1533
1534         list_for_each_entry(reply_q, &ioc->reply_queue_list, list)
1535                 printk(MPT2SAS_INFO_FMT "%s: IRQ %d\n",
1536                     reply_q->name,  ((ioc->msix_enable) ? "PCI-MSI-X enabled" :
1537                     "IO-APIC enabled"), reply_q->vector);
1538
1539         printk(MPT2SAS_INFO_FMT "iomem(0x%016llx), mapped(0x%p), size(%d)\n",
1540             ioc->name, (unsigned long long)chip_phys, ioc->chip, memap_sz);
1541         printk(MPT2SAS_INFO_FMT "ioport(0x%016llx), size(%d)\n",
1542             ioc->name, (unsigned long long)pio_chip, pio_sz);
1543
1544         /* Save PCI configuration state for recovery from PCI AER/EEH errors */
1545         pci_save_state(pdev);
1546
1547         return 0;
1548
1549  out_fail:
1550         if (ioc->chip_phys)
1551                 iounmap(ioc->chip);
1552         ioc->chip_phys = 0;
1553         pci_release_selected_regions(ioc->pdev, ioc->bars);
1554         pci_disable_pcie_error_reporting(pdev);
1555         pci_disable_device(pdev);
1556         return r;
1557 }
1558
1559 /**
1560  * mpt2sas_base_get_msg_frame - obtain request mf pointer
1561  * @ioc: per adapter object
1562  * @smid: system request message index(smid zero is invalid)
1563  *
1564  * Returns virt pointer to message frame.
1565  */
1566 void *
1567 mpt2sas_base_get_msg_frame(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1568 {
1569         return (void *)(ioc->request + (smid * ioc->request_sz));
1570 }
1571
1572 /**
1573  * mpt2sas_base_get_sense_buffer - obtain a sense buffer assigned to a mf request
1574  * @ioc: per adapter object
1575  * @smid: system request message index
1576  *
1577  * Returns virt pointer to sense buffer.
1578  */
1579 void *
1580 mpt2sas_base_get_sense_buffer(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1581 {
1582         return (void *)(ioc->sense + ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1583 }
1584
1585 /**
1586  * mpt2sas_base_get_sense_buffer_dma - obtain a sense buffer assigned to a mf request
1587  * @ioc: per adapter object
1588  * @smid: system request message index
1589  *
1590  * Returns phys pointer to the low 32bit address of the sense buffer.
1591  */
1592 __le32
1593 mpt2sas_base_get_sense_buffer_dma(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1594 {
1595         return cpu_to_le32(ioc->sense_dma +
1596                         ((smid - 1) * SCSI_SENSE_BUFFERSIZE));
1597 }
1598
1599 /**
1600  * mpt2sas_base_get_reply_virt_addr - obtain reply frames virt address
1601  * @ioc: per adapter object
1602  * @phys_addr: lower 32 physical addr of the reply
1603  *
1604  * Converts 32bit lower physical addr into a virt address.
1605  */
1606 void *
1607 mpt2sas_base_get_reply_virt_addr(struct MPT2SAS_ADAPTER *ioc, u32 phys_addr)
1608 {
1609         if (!phys_addr)
1610                 return NULL;
1611         return ioc->reply + (phys_addr - (u32)ioc->reply_dma);
1612 }
1613
1614 /**
1615  * mpt2sas_base_get_smid - obtain a free smid from internal queue
1616  * @ioc: per adapter object
1617  * @cb_idx: callback index
1618  *
1619  * Returns smid (zero is invalid)
1620  */
1621 u16
1622 mpt2sas_base_get_smid(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1623 {
1624         unsigned long flags;
1625         struct request_tracker *request;
1626         u16 smid;
1627
1628         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1629         if (list_empty(&ioc->internal_free_list)) {
1630                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1631                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1632                     ioc->name, __func__);
1633                 return 0;
1634         }
1635
1636         request = list_entry(ioc->internal_free_list.next,
1637             struct request_tracker, tracker_list);
1638         request->cb_idx = cb_idx;
1639         smid = request->smid;
1640         list_del(&request->tracker_list);
1641         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1642         return smid;
1643 }
1644
1645 /**
1646  * mpt2sas_base_get_smid_scsiio - obtain a free smid from scsiio queue
1647  * @ioc: per adapter object
1648  * @cb_idx: callback index
1649  * @scmd: pointer to scsi command object
1650  *
1651  * Returns smid (zero is invalid)
1652  */
1653 u16
1654 mpt2sas_base_get_smid_scsiio(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx,
1655     struct scsi_cmnd *scmd)
1656 {
1657         unsigned long flags;
1658         struct scsiio_tracker *request;
1659         u16 smid;
1660
1661         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1662         if (list_empty(&ioc->free_list)) {
1663                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1664                 printk(MPT2SAS_ERR_FMT "%s: smid not available\n",
1665                     ioc->name, __func__);
1666                 return 0;
1667         }
1668
1669         request = list_entry(ioc->free_list.next,
1670             struct scsiio_tracker, tracker_list);
1671         request->scmd = scmd;
1672         request->cb_idx = cb_idx;
1673         smid = request->smid;
1674         list_del(&request->tracker_list);
1675         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1676         return smid;
1677 }
1678
1679 /**
1680  * mpt2sas_base_get_smid_hpr - obtain a free smid from hi-priority queue
1681  * @ioc: per adapter object
1682  * @cb_idx: callback index
1683  *
1684  * Returns smid (zero is invalid)
1685  */
1686 u16
1687 mpt2sas_base_get_smid_hpr(struct MPT2SAS_ADAPTER *ioc, u8 cb_idx)
1688 {
1689         unsigned long flags;
1690         struct request_tracker *request;
1691         u16 smid;
1692
1693         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1694         if (list_empty(&ioc->hpr_free_list)) {
1695                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1696                 return 0;
1697         }
1698
1699         request = list_entry(ioc->hpr_free_list.next,
1700             struct request_tracker, tracker_list);
1701         request->cb_idx = cb_idx;
1702         smid = request->smid;
1703         list_del(&request->tracker_list);
1704         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1705         return smid;
1706 }
1707
1708
1709 /**
1710  * mpt2sas_base_free_smid - put smid back on free_list
1711  * @ioc: per adapter object
1712  * @smid: system request message index
1713  *
1714  * Return nothing.
1715  */
1716 void
1717 mpt2sas_base_free_smid(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1718 {
1719         unsigned long flags;
1720         int i;
1721         struct chain_tracker *chain_req, *next;
1722
1723         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1724         if (smid < ioc->hi_priority_smid) {
1725                 /* scsiio queue */
1726                 i = smid - 1;
1727                 if (!list_empty(&ioc->scsi_lookup[i].chain_list)) {
1728                         list_for_each_entry_safe(chain_req, next,
1729                             &ioc->scsi_lookup[i].chain_list, tracker_list) {
1730                                 list_del_init(&chain_req->tracker_list);
1731                                 list_add_tail(&chain_req->tracker_list,
1732                                     &ioc->free_chain_list);
1733                         }
1734                 }
1735                 ioc->scsi_lookup[i].cb_idx = 0xFF;
1736                 ioc->scsi_lookup[i].scmd = NULL;
1737                 ioc->scsi_lookup[i].direct_io = 0;
1738                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
1739                     &ioc->free_list);
1740                 spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1741
1742                 /*
1743                  * See _wait_for_commands_to_complete() call with regards
1744                  * to this code.
1745                  */
1746                 if (ioc->shost_recovery && ioc->pending_io_count) {
1747                         if (ioc->pending_io_count == 1)
1748                                 wake_up(&ioc->reset_wq);
1749                         ioc->pending_io_count--;
1750                 }
1751                 return;
1752         } else if (smid < ioc->internal_smid) {
1753                 /* hi-priority */
1754                 i = smid - ioc->hi_priority_smid;
1755                 ioc->hpr_lookup[i].cb_idx = 0xFF;
1756                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
1757                     &ioc->hpr_free_list);
1758         } else if (smid <= ioc->hba_queue_depth) {
1759                 /* internal queue */
1760                 i = smid - ioc->internal_smid;
1761                 ioc->internal_lookup[i].cb_idx = 0xFF;
1762                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
1763                     &ioc->internal_free_list);
1764         }
1765         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1766 }
1767
1768 /**
1769  * _base_writeq - 64 bit write to MMIO
1770  * @ioc: per adapter object
1771  * @b: data payload
1772  * @addr: address in MMIO space
1773  * @writeq_lock: spin lock
1774  *
1775  * Glue for handling an atomic 64 bit word to MMIO. This special handling takes
1776  * care of 32 bit environment where its not quarenteed to send the entire word
1777  * in one transfer.
1778  */
1779 #ifndef writeq
1780 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1781     spinlock_t *writeq_lock)
1782 {
1783         unsigned long flags;
1784         __u64 data_out = cpu_to_le64(b);
1785
1786         spin_lock_irqsave(writeq_lock, flags);
1787         writel((u32)(data_out), addr);
1788         writel((u32)(data_out >> 32), (addr + 4));
1789         spin_unlock_irqrestore(writeq_lock, flags);
1790 }
1791 #else
1792 static inline void _base_writeq(__u64 b, volatile void __iomem *addr,
1793     spinlock_t *writeq_lock)
1794 {
1795         writeq(cpu_to_le64(b), addr);
1796 }
1797 #endif
1798
1799 static inline u8
1800 _base_get_msix_index(struct MPT2SAS_ADAPTER *ioc)
1801 {
1802         return ioc->cpu_msix_table[raw_smp_processor_id()];
1803 }
1804
1805 /**
1806  * mpt2sas_base_put_smid_scsi_io - send SCSI_IO request to firmware
1807  * @ioc: per adapter object
1808  * @smid: system request message index
1809  * @handle: device handle
1810  *
1811  * Return nothing.
1812  */
1813 void
1814 mpt2sas_base_put_smid_scsi_io(struct MPT2SAS_ADAPTER *ioc, u16 smid, u16 handle)
1815 {
1816         Mpi2RequestDescriptorUnion_t descriptor;
1817         u64 *request = (u64 *)&descriptor;
1818
1819
1820         descriptor.SCSIIO.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_SCSI_IO;
1821         descriptor.SCSIIO.MSIxIndex =  _base_get_msix_index(ioc);
1822         descriptor.SCSIIO.SMID = cpu_to_le16(smid);
1823         descriptor.SCSIIO.DevHandle = cpu_to_le16(handle);
1824         descriptor.SCSIIO.LMID = 0;
1825         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1826             &ioc->scsi_lookup_lock);
1827 }
1828
1829
1830 /**
1831  * mpt2sas_base_put_smid_hi_priority - send Task Management request to firmware
1832  * @ioc: per adapter object
1833  * @smid: system request message index
1834  *
1835  * Return nothing.
1836  */
1837 void
1838 mpt2sas_base_put_smid_hi_priority(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1839 {
1840         Mpi2RequestDescriptorUnion_t descriptor;
1841         u64 *request = (u64 *)&descriptor;
1842
1843         descriptor.HighPriority.RequestFlags =
1844             MPI2_REQ_DESCRIPT_FLAGS_HIGH_PRIORITY;
1845         descriptor.HighPriority.MSIxIndex =  0;
1846         descriptor.HighPriority.SMID = cpu_to_le16(smid);
1847         descriptor.HighPriority.LMID = 0;
1848         descriptor.HighPriority.Reserved1 = 0;
1849         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1850             &ioc->scsi_lookup_lock);
1851 }
1852
1853 /**
1854  * mpt2sas_base_put_smid_default - Default, primarily used for config pages
1855  * @ioc: per adapter object
1856  * @smid: system request message index
1857  *
1858  * Return nothing.
1859  */
1860 void
1861 mpt2sas_base_put_smid_default(struct MPT2SAS_ADAPTER *ioc, u16 smid)
1862 {
1863         Mpi2RequestDescriptorUnion_t descriptor;
1864         u64 *request = (u64 *)&descriptor;
1865
1866         descriptor.Default.RequestFlags = MPI2_REQ_DESCRIPT_FLAGS_DEFAULT_TYPE;
1867         descriptor.Default.MSIxIndex =  _base_get_msix_index(ioc);
1868         descriptor.Default.SMID = cpu_to_le16(smid);
1869         descriptor.Default.LMID = 0;
1870         descriptor.Default.DescriptorTypeDependent = 0;
1871         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1872             &ioc->scsi_lookup_lock);
1873 }
1874
1875 /**
1876  * mpt2sas_base_put_smid_target_assist - send Target Assist/Status to firmware
1877  * @ioc: per adapter object
1878  * @smid: system request message index
1879  * @io_index: value used to track the IO
1880  *
1881  * Return nothing.
1882  */
1883 void
1884 mpt2sas_base_put_smid_target_assist(struct MPT2SAS_ADAPTER *ioc, u16 smid,
1885     u16 io_index)
1886 {
1887         Mpi2RequestDescriptorUnion_t descriptor;
1888         u64 *request = (u64 *)&descriptor;
1889
1890         descriptor.SCSITarget.RequestFlags =
1891             MPI2_REQ_DESCRIPT_FLAGS_SCSI_TARGET;
1892         descriptor.SCSITarget.MSIxIndex =  _base_get_msix_index(ioc);
1893         descriptor.SCSITarget.SMID = cpu_to_le16(smid);
1894         descriptor.SCSITarget.LMID = 0;
1895         descriptor.SCSITarget.IoIndex = cpu_to_le16(io_index);
1896         _base_writeq(*request, &ioc->chip->RequestDescriptorPostLow,
1897             &ioc->scsi_lookup_lock);
1898 }
1899
1900 /**
1901  * _base_display_dell_branding - Disply branding string
1902  * @ioc: per adapter object
1903  *
1904  * Return nothing.
1905  */
1906 static void
1907 _base_display_dell_branding(struct MPT2SAS_ADAPTER *ioc)
1908 {
1909         char dell_branding[MPT2SAS_DELL_BRANDING_SIZE];
1910
1911         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_DELL)
1912                 return;
1913
1914         memset(dell_branding, 0, MPT2SAS_DELL_BRANDING_SIZE);
1915         switch (ioc->pdev->subsystem_device) {
1916         case MPT2SAS_DELL_6GBPS_SAS_HBA_SSDID:
1917                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_HBA_BRANDING,
1918                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1919                 break;
1920         case MPT2SAS_DELL_PERC_H200_ADAPTER_SSDID:
1921                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_ADAPTER_BRANDING,
1922                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1923                 break;
1924         case MPT2SAS_DELL_PERC_H200_INTEGRATED_SSDID:
1925                 strncpy(dell_branding,
1926                     MPT2SAS_DELL_PERC_H200_INTEGRATED_BRANDING,
1927                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1928                 break;
1929         case MPT2SAS_DELL_PERC_H200_MODULAR_SSDID:
1930                 strncpy(dell_branding,
1931                     MPT2SAS_DELL_PERC_H200_MODULAR_BRANDING,
1932                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1933                 break;
1934         case MPT2SAS_DELL_PERC_H200_EMBEDDED_SSDID:
1935                 strncpy(dell_branding,
1936                     MPT2SAS_DELL_PERC_H200_EMBEDDED_BRANDING,
1937                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1938                 break;
1939         case MPT2SAS_DELL_PERC_H200_SSDID:
1940                 strncpy(dell_branding, MPT2SAS_DELL_PERC_H200_BRANDING,
1941                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1942                 break;
1943         case MPT2SAS_DELL_6GBPS_SAS_SSDID:
1944                 strncpy(dell_branding, MPT2SAS_DELL_6GBPS_SAS_BRANDING,
1945                     MPT2SAS_DELL_BRANDING_SIZE - 1);
1946                 break;
1947         default:
1948                 sprintf(dell_branding, "0x%4X", ioc->pdev->subsystem_device);
1949                 break;
1950         }
1951
1952         printk(MPT2SAS_INFO_FMT "%s: Vendor(0x%04X), Device(0x%04X),"
1953             " SSVID(0x%04X), SSDID(0x%04X)\n", ioc->name, dell_branding,
1954             ioc->pdev->vendor, ioc->pdev->device, ioc->pdev->subsystem_vendor,
1955             ioc->pdev->subsystem_device);
1956 }
1957
1958 /**
1959  * _base_display_intel_branding - Display branding string
1960  * @ioc: per adapter object
1961  *
1962  * Return nothing.
1963  */
1964 static void
1965 _base_display_intel_branding(struct MPT2SAS_ADAPTER *ioc)
1966 {
1967         if (ioc->pdev->subsystem_vendor != PCI_VENDOR_ID_INTEL)
1968                 return;
1969
1970         switch (ioc->pdev->device) {
1971         case MPI2_MFGPAGE_DEVID_SAS2008:
1972                 switch (ioc->pdev->subsystem_device) {
1973                 case MPT2SAS_INTEL_RMS2LL080_SSDID:
1974                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1975                             MPT2SAS_INTEL_RMS2LL080_BRANDING);
1976                         break;
1977                 case MPT2SAS_INTEL_RMS2LL040_SSDID:
1978                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1979                             MPT2SAS_INTEL_RMS2LL040_BRANDING);
1980                         break;
1981                 case MPT2SAS_INTEL_RAMSDALE_SSDID:
1982                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1983                             MPT2SAS_INTEL_RAMSDALE_BRANDING);
1984                         break;
1985                 default:
1986                         break;
1987                 }
1988         case MPI2_MFGPAGE_DEVID_SAS2308_2:
1989                 switch (ioc->pdev->subsystem_device) {
1990                 case MPT2SAS_INTEL_RS25GB008_SSDID:
1991                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1992                             MPT2SAS_INTEL_RS25GB008_BRANDING);
1993                         break;
1994                 case MPT2SAS_INTEL_RMS25JB080_SSDID:
1995                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
1996                             MPT2SAS_INTEL_RMS25JB080_BRANDING);
1997                         break;
1998                 case MPT2SAS_INTEL_RMS25JB040_SSDID:
1999                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2000                             MPT2SAS_INTEL_RMS25JB040_BRANDING);
2001                         break;
2002                 case MPT2SAS_INTEL_RMS25KB080_SSDID:
2003                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2004                             MPT2SAS_INTEL_RMS25KB080_BRANDING);
2005                         break;
2006                 case MPT2SAS_INTEL_RMS25KB040_SSDID:
2007                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2008                             MPT2SAS_INTEL_RMS25KB040_BRANDING);
2009                         break;
2010                 default:
2011                         break;
2012                 }
2013         default:
2014                 break;
2015         }
2016 }
2017
2018 /**
2019  * _base_display_hp_branding - Display branding string
2020  * @ioc: per adapter object
2021  *
2022  * Return nothing.
2023  */
2024 static void
2025 _base_display_hp_branding(struct MPT2SAS_ADAPTER *ioc)
2026 {
2027         if (ioc->pdev->subsystem_vendor != MPT2SAS_HP_3PAR_SSVID)
2028                 return;
2029
2030         switch (ioc->pdev->device) {
2031         case MPI2_MFGPAGE_DEVID_SAS2004:
2032                 switch (ioc->pdev->subsystem_device) {
2033                 case MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_SSDID:
2034                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2035                             MPT2SAS_HP_DAUGHTER_2_4_INTERNAL_BRANDING);
2036                         break;
2037                 default:
2038                         break;
2039                 }
2040         case MPI2_MFGPAGE_DEVID_SAS2308_2:
2041                 switch (ioc->pdev->subsystem_device) {
2042                 case MPT2SAS_HP_2_4_INTERNAL_SSDID:
2043                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2044                             MPT2SAS_HP_2_4_INTERNAL_BRANDING);
2045                         break;
2046                 case MPT2SAS_HP_2_4_EXTERNAL_SSDID:
2047                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2048                             MPT2SAS_HP_2_4_EXTERNAL_BRANDING);
2049                         break;
2050                 case MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_SSDID:
2051                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2052                             MPT2SAS_HP_1_4_INTERNAL_1_4_EXTERNAL_BRANDING);
2053                         break;
2054                 case MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_SSDID:
2055                         printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2056                             MPT2SAS_HP_EMBEDDED_2_4_INTERNAL_BRANDING);
2057                         break;
2058                 default:
2059                         break;
2060                 }
2061         default:
2062                 break;
2063         }
2064 }
2065
2066 /**
2067  * _base_display_ioc_capabilities - Disply IOC's capabilities.
2068  * @ioc: per adapter object
2069  *
2070  * Return nothing.
2071  */
2072 static void
2073 _base_display_ioc_capabilities(struct MPT2SAS_ADAPTER *ioc)
2074 {
2075         int i = 0;
2076         char desc[16];
2077         u32 iounit_pg1_flags;
2078         u32 bios_version;
2079
2080         bios_version = le32_to_cpu(ioc->bios_pg3.BiosVersion);
2081         strncpy(desc, ioc->manu_pg0.ChipName, 16);
2082         printk(MPT2SAS_INFO_FMT "%s: FWVersion(%02d.%02d.%02d.%02d), "
2083            "ChipRevision(0x%02x), BiosVersion(%02d.%02d.%02d.%02d)\n",
2084             ioc->name, desc,
2085            (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
2086            (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
2087            (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
2088            ioc->facts.FWVersion.Word & 0x000000FF,
2089            ioc->pdev->revision,
2090            (bios_version & 0xFF000000) >> 24,
2091            (bios_version & 0x00FF0000) >> 16,
2092            (bios_version & 0x0000FF00) >> 8,
2093             bios_version & 0x000000FF);
2094
2095         _base_display_dell_branding(ioc);
2096         _base_display_intel_branding(ioc);
2097         _base_display_hp_branding(ioc);
2098
2099         printk(MPT2SAS_INFO_FMT "Protocol=(", ioc->name);
2100
2101         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_INITIATOR) {
2102                 printk("Initiator");
2103                 i++;
2104         }
2105
2106         if (ioc->facts.ProtocolFlags & MPI2_IOCFACTS_PROTOCOL_SCSI_TARGET) {
2107                 printk("%sTarget", i ? "," : "");
2108                 i++;
2109         }
2110
2111         i = 0;
2112         printk("), ");
2113         printk("Capabilities=(");
2114
2115         if (!ioc->hide_ir_msg) {
2116                 if (ioc->facts.IOCCapabilities &
2117                     MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID) {
2118                         printk("Raid");
2119                         i++;
2120                 }
2121         }
2122
2123         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_TLR) {
2124                 printk("%sTLR", i ? "," : "");
2125                 i++;
2126         }
2127
2128         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_MULTICAST) {
2129                 printk("%sMulticast", i ? "," : "");
2130                 i++;
2131         }
2132
2133         if (ioc->facts.IOCCapabilities &
2134             MPI2_IOCFACTS_CAPABILITY_BIDIRECTIONAL_TARGET) {
2135                 printk("%sBIDI Target", i ? "," : "");
2136                 i++;
2137         }
2138
2139         if (ioc->facts.IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_EEDP) {
2140                 printk("%sEEDP", i ? "," : "");
2141                 i++;
2142         }
2143
2144         if (ioc->facts.IOCCapabilities &
2145             MPI2_IOCFACTS_CAPABILITY_SNAPSHOT_BUFFER) {
2146                 printk("%sSnapshot Buffer", i ? "," : "");
2147                 i++;
2148         }
2149
2150         if (ioc->facts.IOCCapabilities &
2151             MPI2_IOCFACTS_CAPABILITY_DIAG_TRACE_BUFFER) {
2152                 printk("%sDiag Trace Buffer", i ? "," : "");
2153                 i++;
2154         }
2155
2156         if (ioc->facts.IOCCapabilities &
2157             MPI2_IOCFACTS_CAPABILITY_EXTENDED_BUFFER) {
2158                 printk(KERN_INFO "%sDiag Extended Buffer", i ? "," : "");
2159                 i++;
2160         }
2161
2162         if (ioc->facts.IOCCapabilities &
2163             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING) {
2164                 printk("%sTask Set Full", i ? "," : "");
2165                 i++;
2166         }
2167
2168         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2169         if (!(iounit_pg1_flags & MPI2_IOUNITPAGE1_NATIVE_COMMAND_Q_DISABLE)) {
2170                 printk("%sNCQ", i ? "," : "");
2171                 i++;
2172         }
2173
2174         printk(")\n");
2175 }
2176
2177 /**
2178  * _base_update_missing_delay - change the missing delay timers
2179  * @ioc: per adapter object
2180  * @device_missing_delay: amount of time till device is reported missing
2181  * @io_missing_delay: interval IO is returned when there is a missing device
2182  *
2183  * Return nothing.
2184  *
2185  * Passed on the command line, this function will modify the device missing
2186  * delay, as well as the io missing delay. This should be called at driver
2187  * load time.
2188  */
2189 static void
2190 _base_update_missing_delay(struct MPT2SAS_ADAPTER *ioc,
2191         u16 device_missing_delay, u8 io_missing_delay)
2192 {
2193         u16 dmd, dmd_new, dmd_orignal;
2194         u8 io_missing_delay_original;
2195         u16 sz;
2196         Mpi2SasIOUnitPage1_t *sas_iounit_pg1 = NULL;
2197         Mpi2ConfigReply_t mpi_reply;
2198         u8 num_phys = 0;
2199         u16 ioc_status;
2200
2201         mpt2sas_config_get_number_hba_phys(ioc, &num_phys);
2202         if (!num_phys)
2203                 return;
2204
2205         sz = offsetof(Mpi2SasIOUnitPage1_t, PhyData) + (num_phys *
2206             sizeof(Mpi2SasIOUnit1PhyData_t));
2207         sas_iounit_pg1 = kzalloc(sz, GFP_KERNEL);
2208         if (!sas_iounit_pg1) {
2209                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2210                     ioc->name, __FILE__, __LINE__, __func__);
2211                 goto out;
2212         }
2213         if ((mpt2sas_config_get_sas_iounit_pg1(ioc, &mpi_reply,
2214             sas_iounit_pg1, sz))) {
2215                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2216                     ioc->name, __FILE__, __LINE__, __func__);
2217                 goto out;
2218         }
2219         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
2220             MPI2_IOCSTATUS_MASK;
2221         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
2222                 printk(MPT2SAS_ERR_FMT "failure at %s:%d/%s()!\n",
2223                     ioc->name, __FILE__, __LINE__, __func__);
2224                 goto out;
2225         }
2226
2227         /* device missing delay */
2228         dmd = sas_iounit_pg1->ReportDeviceMissingDelay;
2229         if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2230                 dmd = (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2231         else
2232                 dmd = dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2233         dmd_orignal = dmd;
2234         if (device_missing_delay > 0x7F) {
2235                 dmd = (device_missing_delay > 0x7F0) ? 0x7F0 :
2236                     device_missing_delay;
2237                 dmd = dmd / 16;
2238                 dmd |= MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16;
2239         } else
2240                 dmd = device_missing_delay;
2241         sas_iounit_pg1->ReportDeviceMissingDelay = dmd;
2242
2243         /* io missing delay */
2244         io_missing_delay_original = sas_iounit_pg1->IODeviceMissingDelay;
2245         sas_iounit_pg1->IODeviceMissingDelay = io_missing_delay;
2246
2247         if (!mpt2sas_config_set_sas_iounit_pg1(ioc, &mpi_reply, sas_iounit_pg1,
2248             sz)) {
2249                 if (dmd & MPI2_SASIOUNIT1_REPORT_MISSING_UNIT_16)
2250                         dmd_new = (dmd &
2251                             MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK) * 16;
2252                 else
2253                         dmd_new =
2254                     dmd & MPI2_SASIOUNIT1_REPORT_MISSING_TIMEOUT_MASK;
2255                 printk(MPT2SAS_INFO_FMT "device_missing_delay: old(%d), "
2256                     "new(%d)\n", ioc->name, dmd_orignal, dmd_new);
2257                 printk(MPT2SAS_INFO_FMT "ioc_missing_delay: old(%d), "
2258                     "new(%d)\n", ioc->name, io_missing_delay_original,
2259                     io_missing_delay);
2260                 ioc->device_missing_delay = dmd_new;
2261                 ioc->io_missing_delay = io_missing_delay;
2262         }
2263
2264 out:
2265         kfree(sas_iounit_pg1);
2266 }
2267
2268 /**
2269  * _base_static_config_pages - static start of day config pages
2270  * @ioc: per adapter object
2271  *
2272  * Return nothing.
2273  */
2274 static void
2275 _base_static_config_pages(struct MPT2SAS_ADAPTER *ioc)
2276 {
2277         Mpi2ConfigReply_t mpi_reply;
2278         u32 iounit_pg1_flags;
2279
2280         mpt2sas_config_get_manufacturing_pg0(ioc, &mpi_reply, &ioc->manu_pg0);
2281         if (ioc->ir_firmware)
2282                 mpt2sas_config_get_manufacturing_pg10(ioc, &mpi_reply,
2283                     &ioc->manu_pg10);
2284         mpt2sas_config_get_bios_pg2(ioc, &mpi_reply, &ioc->bios_pg2);
2285         mpt2sas_config_get_bios_pg3(ioc, &mpi_reply, &ioc->bios_pg3);
2286         mpt2sas_config_get_ioc_pg8(ioc, &mpi_reply, &ioc->ioc_pg8);
2287         mpt2sas_config_get_iounit_pg0(ioc, &mpi_reply, &ioc->iounit_pg0);
2288         mpt2sas_config_get_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2289         _base_display_ioc_capabilities(ioc);
2290
2291         /*
2292          * Enable task_set_full handling in iounit_pg1 when the
2293          * facts capabilities indicate that its supported.
2294          */
2295         iounit_pg1_flags = le32_to_cpu(ioc->iounit_pg1.Flags);
2296         if ((ioc->facts.IOCCapabilities &
2297             MPI2_IOCFACTS_CAPABILITY_TASK_SET_FULL_HANDLING))
2298                 iounit_pg1_flags &=
2299                     ~MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2300         else
2301                 iounit_pg1_flags |=
2302                     MPI2_IOUNITPAGE1_DISABLE_TASK_SET_FULL_HANDLING;
2303         ioc->iounit_pg1.Flags = cpu_to_le32(iounit_pg1_flags);
2304         mpt2sas_config_set_iounit_pg1(ioc, &mpi_reply, &ioc->iounit_pg1);
2305
2306 }
2307
2308 /**
2309  * _base_release_memory_pools - release memory
2310  * @ioc: per adapter object
2311  *
2312  * Free memory allocated from _base_allocate_memory_pools.
2313  *
2314  * Return nothing.
2315  */
2316 static void
2317 _base_release_memory_pools(struct MPT2SAS_ADAPTER *ioc)
2318 {
2319         int i;
2320
2321         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2322             __func__));
2323
2324         if (ioc->request) {
2325                 pci_free_consistent(ioc->pdev, ioc->request_dma_sz,
2326                     ioc->request,  ioc->request_dma);
2327                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "request_pool(0x%p)"
2328                     ": free\n", ioc->name, ioc->request));
2329                 ioc->request = NULL;
2330         }
2331
2332         if (ioc->sense) {
2333                 pci_pool_free(ioc->sense_dma_pool, ioc->sense, ioc->sense_dma);
2334                 if (ioc->sense_dma_pool)
2335                         pci_pool_destroy(ioc->sense_dma_pool);
2336                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_pool(0x%p)"
2337                     ": free\n", ioc->name, ioc->sense));
2338                 ioc->sense = NULL;
2339         }
2340
2341         if (ioc->reply) {
2342                 pci_pool_free(ioc->reply_dma_pool, ioc->reply, ioc->reply_dma);
2343                 if (ioc->reply_dma_pool)
2344                         pci_pool_destroy(ioc->reply_dma_pool);
2345                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_pool(0x%p)"
2346                      ": free\n", ioc->name, ioc->reply));
2347                 ioc->reply = NULL;
2348         }
2349
2350         if (ioc->reply_free) {
2351                 pci_pool_free(ioc->reply_free_dma_pool, ioc->reply_free,
2352                     ioc->reply_free_dma);
2353                 if (ioc->reply_free_dma_pool)
2354                         pci_pool_destroy(ioc->reply_free_dma_pool);
2355                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_pool"
2356                     "(0x%p): free\n", ioc->name, ioc->reply_free));
2357                 ioc->reply_free = NULL;
2358         }
2359
2360         if (ioc->reply_post_free) {
2361                 pci_pool_free(ioc->reply_post_free_dma_pool,
2362                     ioc->reply_post_free, ioc->reply_post_free_dma);
2363                 if (ioc->reply_post_free_dma_pool)
2364                         pci_pool_destroy(ioc->reply_post_free_dma_pool);
2365                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2366                     "reply_post_free_pool(0x%p): free\n", ioc->name,
2367                     ioc->reply_post_free));
2368                 ioc->reply_post_free = NULL;
2369         }
2370
2371         if (ioc->config_page) {
2372                 dexitprintk(ioc, printk(MPT2SAS_INFO_FMT
2373                     "config_page(0x%p): free\n", ioc->name,
2374                     ioc->config_page));
2375                 pci_free_consistent(ioc->pdev, ioc->config_page_sz,
2376                     ioc->config_page, ioc->config_page_dma);
2377         }
2378
2379         if (ioc->scsi_lookup) {
2380                 free_pages((ulong)ioc->scsi_lookup, ioc->scsi_lookup_pages);
2381                 ioc->scsi_lookup = NULL;
2382         }
2383         kfree(ioc->hpr_lookup);
2384         kfree(ioc->internal_lookup);
2385         if (ioc->chain_lookup) {
2386                 for (i = 0; i < ioc->chain_depth; i++) {
2387                         if (ioc->chain_lookup[i].chain_buffer)
2388                                 pci_pool_free(ioc->chain_dma_pool,
2389                                     ioc->chain_lookup[i].chain_buffer,
2390                                     ioc->chain_lookup[i].chain_buffer_dma);
2391                 }
2392                 if (ioc->chain_dma_pool)
2393                         pci_pool_destroy(ioc->chain_dma_pool);
2394                 free_pages((ulong)ioc->chain_lookup, ioc->chain_pages);
2395                 ioc->chain_lookup = NULL;
2396         }
2397 }
2398
2399
2400 /**
2401  * _base_allocate_memory_pools - allocate start of day memory pools
2402  * @ioc: per adapter object
2403  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2404  *
2405  * Returns 0 success, anything else error
2406  */
2407 static int
2408 _base_allocate_memory_pools(struct MPT2SAS_ADAPTER *ioc,  int sleep_flag)
2409 {
2410         struct mpt2sas_facts *facts;
2411         u16 max_sge_elements;
2412         u16 chains_needed_per_io;
2413         u32 sz, total_sz, reply_post_free_sz;
2414         u32 retry_sz;
2415         u16 max_request_credit;
2416         int i;
2417
2418         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
2419             __func__));
2420
2421         retry_sz = 0;
2422         facts = &ioc->facts;
2423
2424         /* command line tunables  for max sgl entries */
2425         if (max_sgl_entries != -1) {
2426                 ioc->shost->sg_tablesize = (max_sgl_entries <
2427                     MPT2SAS_SG_DEPTH) ? max_sgl_entries :
2428                     MPT2SAS_SG_DEPTH;
2429         } else {
2430                 ioc->shost->sg_tablesize = MPT2SAS_SG_DEPTH;
2431         }
2432
2433         /* command line tunables  for max controller queue depth */
2434         if (max_queue_depth != -1 && max_queue_depth != 0) {
2435                 max_request_credit = min_t(u16, max_queue_depth +
2436                         ioc->hi_priority_depth + ioc->internal_depth,
2437                         facts->RequestCredit);
2438                 if (max_request_credit > MAX_HBA_QUEUE_DEPTH)
2439                         max_request_credit =  MAX_HBA_QUEUE_DEPTH;
2440         } else
2441                 max_request_credit = min_t(u16, facts->RequestCredit,
2442                     MAX_HBA_QUEUE_DEPTH);
2443
2444         ioc->hba_queue_depth = max_request_credit;
2445         ioc->hi_priority_depth = facts->HighPriorityCredit;
2446         ioc->internal_depth = ioc->hi_priority_depth + 5;
2447
2448         /* request frame size */
2449         ioc->request_sz = facts->IOCRequestFrameSize * 4;
2450
2451         /* reply frame size */
2452         ioc->reply_sz = facts->ReplyFrameSize * 4;
2453
2454  retry_allocation:
2455         total_sz = 0;
2456         /* calculate number of sg elements left over in the 1st frame */
2457         max_sge_elements = ioc->request_sz - ((sizeof(Mpi2SCSIIORequest_t) -
2458             sizeof(Mpi2SGEIOUnion_t)) + ioc->sge_size);
2459         ioc->max_sges_in_main_message = max_sge_elements/ioc->sge_size;
2460
2461         /* now do the same for a chain buffer */
2462         max_sge_elements = ioc->request_sz - ioc->sge_size;
2463         ioc->max_sges_in_chain_message = max_sge_elements/ioc->sge_size;
2464
2465         ioc->chain_offset_value_for_main_message =
2466             ((sizeof(Mpi2SCSIIORequest_t) - sizeof(Mpi2SGEIOUnion_t)) +
2467              (ioc->max_sges_in_chain_message * ioc->sge_size)) / 4;
2468
2469         /*
2470          *  MPT2SAS_SG_DEPTH = CONFIG_FUSION_MAX_SGE
2471          */
2472         chains_needed_per_io = ((ioc->shost->sg_tablesize -
2473            ioc->max_sges_in_main_message)/ioc->max_sges_in_chain_message)
2474             + 1;
2475         if (chains_needed_per_io > facts->MaxChainDepth) {
2476                 chains_needed_per_io = facts->MaxChainDepth;
2477                 ioc->shost->sg_tablesize = min_t(u16,
2478                 ioc->max_sges_in_main_message + (ioc->max_sges_in_chain_message
2479                 * chains_needed_per_io), ioc->shost->sg_tablesize);
2480         }
2481         ioc->chains_needed_per_io = chains_needed_per_io;
2482
2483         /* reply free queue sizing - taking into account for 64 FW events */
2484         ioc->reply_free_queue_depth = ioc->hba_queue_depth + 64;
2485
2486         /* align the reply post queue on the next 16 count boundary */
2487         if (!ioc->reply_free_queue_depth % 16)
2488                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth + 16;
2489         else
2490                 ioc->reply_post_queue_depth = ioc->reply_free_queue_depth +
2491                                 32 - (ioc->reply_free_queue_depth % 16);
2492         if (ioc->reply_post_queue_depth >
2493             facts->MaxReplyDescriptorPostQueueDepth) {
2494                 ioc->reply_post_queue_depth = min_t(u16,
2495                     (facts->MaxReplyDescriptorPostQueueDepth -
2496                     (facts->MaxReplyDescriptorPostQueueDepth % 16)),
2497                     (ioc->hba_queue_depth - (ioc->hba_queue_depth % 16)));
2498                 ioc->reply_free_queue_depth = ioc->reply_post_queue_depth - 16;
2499                 ioc->hba_queue_depth = ioc->reply_free_queue_depth - 64;
2500         }
2501
2502
2503         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scatter gather: "
2504             "sge_in_main_msg(%d), sge_per_chain(%d), sge_per_io(%d), "
2505             "chains_per_io(%d)\n", ioc->name, ioc->max_sges_in_main_message,
2506             ioc->max_sges_in_chain_message, ioc->shost->sg_tablesize,
2507             ioc->chains_needed_per_io));
2508
2509         ioc->scsiio_depth = ioc->hba_queue_depth -
2510             ioc->hi_priority_depth - ioc->internal_depth;
2511
2512         /* set the scsi host can_queue depth
2513          * with some internal commands that could be outstanding
2514          */
2515         ioc->shost->can_queue = ioc->scsiio_depth;
2516         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsi host: "
2517             "can_queue depth (%d)\n", ioc->name, ioc->shost->can_queue));
2518
2519         /* contiguous pool for request and chains, 16 byte align, one extra "
2520          * "frame for smid=0
2521          */
2522         ioc->chain_depth = ioc->chains_needed_per_io * ioc->scsiio_depth;
2523         sz = ((ioc->scsiio_depth + 1) * ioc->request_sz);
2524
2525         /* hi-priority queue */
2526         sz += (ioc->hi_priority_depth * ioc->request_sz);
2527
2528         /* internal queue */
2529         sz += (ioc->internal_depth * ioc->request_sz);
2530
2531         ioc->request_dma_sz = sz;
2532         ioc->request = pci_alloc_consistent(ioc->pdev, sz, &ioc->request_dma);
2533         if (!ioc->request) {
2534                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2535                     "failed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2536                     "total(%d kB)\n", ioc->name, ioc->hba_queue_depth,
2537                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2538                 if (ioc->scsiio_depth < MPT2SAS_SAS_QUEUE_DEPTH)
2539                         goto out;
2540                 retry_sz += 64;
2541                 ioc->hba_queue_depth = max_request_credit - retry_sz;
2542                 goto retry_allocation;
2543         }
2544
2545         if (retry_sz)
2546                 printk(MPT2SAS_ERR_FMT "request pool: pci_alloc_consistent "
2547                     "succeed: hba_depth(%d), chains_per_io(%d), frame_sz(%d), "
2548                     "total(%d kb)\n", ioc->name, ioc->hba_queue_depth,
2549                     ioc->chains_needed_per_io, ioc->request_sz, sz/1024);
2550
2551
2552         /* hi-priority queue */
2553         ioc->hi_priority = ioc->request + ((ioc->scsiio_depth + 1) *
2554             ioc->request_sz);
2555         ioc->hi_priority_dma = ioc->request_dma + ((ioc->scsiio_depth + 1) *
2556             ioc->request_sz);
2557
2558         /* internal queue */
2559         ioc->internal = ioc->hi_priority + (ioc->hi_priority_depth *
2560             ioc->request_sz);
2561         ioc->internal_dma = ioc->hi_priority_dma + (ioc->hi_priority_depth *
2562             ioc->request_sz);
2563
2564
2565         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool(0x%p): "
2566             "depth(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2567             ioc->request, ioc->hba_queue_depth, ioc->request_sz,
2568             (ioc->hba_queue_depth * ioc->request_sz)/1024));
2569         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request pool: dma(0x%llx)\n",
2570             ioc->name, (unsigned long long) ioc->request_dma));
2571         total_sz += sz;
2572
2573         sz = ioc->scsiio_depth * sizeof(struct scsiio_tracker);
2574         ioc->scsi_lookup_pages = get_order(sz);
2575         ioc->scsi_lookup = (struct scsiio_tracker *)__get_free_pages(
2576             GFP_KERNEL, ioc->scsi_lookup_pages);
2577         if (!ioc->scsi_lookup) {
2578                 printk(MPT2SAS_ERR_FMT "scsi_lookup: get_free_pages failed, "
2579                     "sz(%d)\n", ioc->name, (int)sz);
2580                 goto out;
2581         }
2582
2583         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "scsiio(0x%p): "
2584             "depth(%d)\n", ioc->name, ioc->request,
2585             ioc->scsiio_depth));
2586
2587         ioc->chain_depth = min_t(u32, ioc->chain_depth, MAX_CHAIN_DEPTH);
2588         sz = ioc->chain_depth * sizeof(struct chain_tracker);
2589         ioc->chain_pages = get_order(sz);
2590
2591         ioc->chain_lookup = (struct chain_tracker *)__get_free_pages(
2592             GFP_KERNEL, ioc->chain_pages);
2593         if (!ioc->chain_lookup) {
2594                 printk(MPT2SAS_ERR_FMT "chain_lookup: get_free_pages failed, "
2595                     "sz(%d)\n", ioc->name, (int)sz);
2596                 goto out;
2597         }
2598         ioc->chain_dma_pool = pci_pool_create("chain pool", ioc->pdev,
2599             ioc->request_sz, 16, 0);
2600         if (!ioc->chain_dma_pool) {
2601                 printk(MPT2SAS_ERR_FMT "chain_dma_pool: pci_pool_create "
2602                     "failed\n", ioc->name);
2603                 goto out;
2604         }
2605         for (i = 0; i < ioc->chain_depth; i++) {
2606                 ioc->chain_lookup[i].chain_buffer = pci_pool_alloc(
2607                     ioc->chain_dma_pool , GFP_KERNEL,
2608                     &ioc->chain_lookup[i].chain_buffer_dma);
2609                 if (!ioc->chain_lookup[i].chain_buffer) {
2610                         ioc->chain_depth = i;
2611                         goto chain_done;
2612                 }
2613                 total_sz += ioc->request_sz;
2614         }
2615 chain_done:
2616         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "chain pool depth"
2617             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name,
2618             ioc->chain_depth, ioc->request_sz, ((ioc->chain_depth *
2619             ioc->request_sz))/1024));
2620
2621         /* initialize hi-priority queue smid's */
2622         ioc->hpr_lookup = kcalloc(ioc->hi_priority_depth,
2623             sizeof(struct request_tracker), GFP_KERNEL);
2624         if (!ioc->hpr_lookup) {
2625                 printk(MPT2SAS_ERR_FMT "hpr_lookup: kcalloc failed\n",
2626                     ioc->name);
2627                 goto out;
2628         }
2629         ioc->hi_priority_smid = ioc->scsiio_depth + 1;
2630         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hi_priority(0x%p): "
2631             "depth(%d), start smid(%d)\n", ioc->name, ioc->hi_priority,
2632             ioc->hi_priority_depth, ioc->hi_priority_smid));
2633
2634         /* initialize internal queue smid's */
2635         ioc->internal_lookup = kcalloc(ioc->internal_depth,
2636             sizeof(struct request_tracker), GFP_KERNEL);
2637         if (!ioc->internal_lookup) {
2638                 printk(MPT2SAS_ERR_FMT "internal_lookup: kcalloc failed\n",
2639                     ioc->name);
2640                 goto out;
2641         }
2642         ioc->internal_smid = ioc->hi_priority_smid + ioc->hi_priority_depth;
2643         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "internal(0x%p): "
2644             "depth(%d), start smid(%d)\n", ioc->name, ioc->internal,
2645              ioc->internal_depth, ioc->internal_smid));
2646
2647         /* sense buffers, 4 byte align */
2648         sz = ioc->scsiio_depth * SCSI_SENSE_BUFFERSIZE;
2649         ioc->sense_dma_pool = pci_pool_create("sense pool", ioc->pdev, sz, 4,
2650             0);
2651         if (!ioc->sense_dma_pool) {
2652                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_create failed\n",
2653                     ioc->name);
2654                 goto out;
2655         }
2656         ioc->sense = pci_pool_alloc(ioc->sense_dma_pool , GFP_KERNEL,
2657             &ioc->sense_dma);
2658         if (!ioc->sense) {
2659                 printk(MPT2SAS_ERR_FMT "sense pool: pci_pool_alloc failed\n",
2660                     ioc->name);
2661                 goto out;
2662         }
2663         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT
2664             "sense pool(0x%p): depth(%d), element_size(%d), pool_size"
2665             "(%d kB)\n", ioc->name, ioc->sense, ioc->scsiio_depth,
2666             SCSI_SENSE_BUFFERSIZE, sz/1024));
2667         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "sense_dma(0x%llx)\n",
2668             ioc->name, (unsigned long long)ioc->sense_dma));
2669         total_sz += sz;
2670
2671         /* reply pool, 4 byte align */
2672         sz = ioc->reply_free_queue_depth * ioc->reply_sz;
2673         ioc->reply_dma_pool = pci_pool_create("reply pool", ioc->pdev, sz, 4,
2674             0);
2675         if (!ioc->reply_dma_pool) {
2676                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_create failed\n",
2677                     ioc->name);
2678                 goto out;
2679         }
2680         ioc->reply = pci_pool_alloc(ioc->reply_dma_pool , GFP_KERNEL,
2681             &ioc->reply_dma);
2682         if (!ioc->reply) {
2683                 printk(MPT2SAS_ERR_FMT "reply pool: pci_pool_alloc failed\n",
2684                     ioc->name);
2685                 goto out;
2686         }
2687         ioc->reply_dma_min_address = (u32)(ioc->reply_dma);
2688         ioc->reply_dma_max_address = (u32)(ioc->reply_dma) + sz;
2689         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply pool(0x%p): depth"
2690             "(%d), frame_size(%d), pool_size(%d kB)\n", ioc->name, ioc->reply,
2691             ioc->reply_free_queue_depth, ioc->reply_sz, sz/1024));
2692         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_dma(0x%llx)\n",
2693             ioc->name, (unsigned long long)ioc->reply_dma));
2694         total_sz += sz;
2695
2696         /* reply free queue, 16 byte align */
2697         sz = ioc->reply_free_queue_depth * 4;
2698         ioc->reply_free_dma_pool = pci_pool_create("reply_free pool",
2699             ioc->pdev, sz, 16, 0);
2700         if (!ioc->reply_free_dma_pool) {
2701                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_create "
2702                     "failed\n", ioc->name);
2703                 goto out;
2704         }
2705         ioc->reply_free = pci_pool_alloc(ioc->reply_free_dma_pool , GFP_KERNEL,
2706             &ioc->reply_free_dma);
2707         if (!ioc->reply_free) {
2708                 printk(MPT2SAS_ERR_FMT "reply_free pool: pci_pool_alloc "
2709                     "failed\n", ioc->name);
2710                 goto out;
2711         }
2712         memset(ioc->reply_free, 0, sz);
2713         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free pool(0x%p): "
2714             "depth(%d), element_size(%d), pool_size(%d kB)\n", ioc->name,
2715             ioc->reply_free, ioc->reply_free_queue_depth, 4, sz/1024));
2716         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_free_dma"
2717             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->reply_free_dma));
2718         total_sz += sz;
2719
2720         /* reply post queue, 16 byte align */
2721         reply_post_free_sz = ioc->reply_post_queue_depth *
2722             sizeof(Mpi2DefaultReplyDescriptor_t);
2723         if (_base_is_controller_msix_enabled(ioc))
2724                 sz = reply_post_free_sz * ioc->reply_queue_count;
2725         else
2726                 sz = reply_post_free_sz;
2727         ioc->reply_post_free_dma_pool = pci_pool_create("reply_post_free pool",
2728             ioc->pdev, sz, 16, 0);
2729         if (!ioc->reply_post_free_dma_pool) {
2730                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_create "
2731                     "failed\n", ioc->name);
2732                 goto out;
2733         }
2734         ioc->reply_post_free = pci_pool_alloc(ioc->reply_post_free_dma_pool ,
2735             GFP_KERNEL, &ioc->reply_post_free_dma);
2736         if (!ioc->reply_post_free) {
2737                 printk(MPT2SAS_ERR_FMT "reply_post_free pool: pci_pool_alloc "
2738                     "failed\n", ioc->name);
2739                 goto out;
2740         }
2741         memset(ioc->reply_post_free, 0, sz);
2742         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply post free pool"
2743             "(0x%p): depth(%d), element_size(%d), pool_size(%d kB)\n",
2744             ioc->name, ioc->reply_post_free, ioc->reply_post_queue_depth, 8,
2745             sz/1024));
2746         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "reply_post_free_dma = "
2747             "(0x%llx)\n", ioc->name, (unsigned long long)
2748             ioc->reply_post_free_dma));
2749         total_sz += sz;
2750
2751         ioc->config_page_sz = 512;
2752         ioc->config_page = pci_alloc_consistent(ioc->pdev,
2753             ioc->config_page_sz, &ioc->config_page_dma);
2754         if (!ioc->config_page) {
2755                 printk(MPT2SAS_ERR_FMT "config page: pci_pool_alloc "
2756                     "failed\n", ioc->name);
2757                 goto out;
2758         }
2759         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config page(0x%p): size"
2760             "(%d)\n", ioc->name, ioc->config_page, ioc->config_page_sz));
2761         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "config_page_dma"
2762             "(0x%llx)\n", ioc->name, (unsigned long long)ioc->config_page_dma));
2763         total_sz += ioc->config_page_sz;
2764
2765         printk(MPT2SAS_INFO_FMT "Allocated physical memory: size(%d kB)\n",
2766             ioc->name, total_sz/1024);
2767         printk(MPT2SAS_INFO_FMT "Current Controller Queue Depth(%d), "
2768             "Max Controller Queue Depth(%d)\n",
2769             ioc->name, ioc->shost->can_queue, facts->RequestCredit);
2770         printk(MPT2SAS_INFO_FMT "Scatter Gather Elements per IO(%d)\n",
2771             ioc->name, ioc->shost->sg_tablesize);
2772         return 0;
2773
2774  out:
2775         return -ENOMEM;
2776 }
2777
2778
2779 /**
2780  * mpt2sas_base_get_iocstate - Get the current state of a MPT adapter.
2781  * @ioc: Pointer to MPT_ADAPTER structure
2782  * @cooked: Request raw or cooked IOC state
2783  *
2784  * Returns all IOC Doorbell register bits if cooked==0, else just the
2785  * Doorbell bits in MPI_IOC_STATE_MASK.
2786  */
2787 u32
2788 mpt2sas_base_get_iocstate(struct MPT2SAS_ADAPTER *ioc, int cooked)
2789 {
2790         u32 s, sc;
2791
2792         s = readl(&ioc->chip->Doorbell);
2793         sc = s & MPI2_IOC_STATE_MASK;
2794         return cooked ? sc : s;
2795 }
2796
2797 /**
2798  * _base_wait_on_iocstate - waiting on a particular ioc state
2799  * @ioc_state: controller state { READY, OPERATIONAL, or RESET }
2800  * @timeout: timeout in second
2801  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2802  *
2803  * Returns 0 for success, non-zero for failure.
2804  */
2805 static int
2806 _base_wait_on_iocstate(struct MPT2SAS_ADAPTER *ioc, u32 ioc_state, int timeout,
2807     int sleep_flag)
2808 {
2809         u32 count, cntdn;
2810         u32 current_state;
2811
2812         count = 0;
2813         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2814         do {
2815                 current_state = mpt2sas_base_get_iocstate(ioc, 1);
2816                 if (current_state == ioc_state)
2817                         return 0;
2818                 if (count && current_state == MPI2_IOC_STATE_FAULT)
2819                         break;
2820                 if (sleep_flag == CAN_SLEEP)
2821                         msleep(1);
2822                 else
2823                         udelay(500);
2824                 count++;
2825         } while (--cntdn);
2826
2827         return current_state;
2828 }
2829
2830 /**
2831  * _base_wait_for_doorbell_int - waiting for controller interrupt(generated by
2832  * a write to the doorbell)
2833  * @ioc: per adapter object
2834  * @timeout: timeout in second
2835  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2836  *
2837  * Returns 0 for success, non-zero for failure.
2838  *
2839  * Notes: MPI2_HIS_IOC2SYS_DB_STATUS - set to one when IOC writes to doorbell.
2840  */
2841 static int
2842 _base_wait_for_doorbell_int(struct MPT2SAS_ADAPTER *ioc, int timeout,
2843     int sleep_flag)
2844 {
2845         u32 cntdn, count;
2846         u32 int_status;
2847
2848         count = 0;
2849         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2850         do {
2851                 int_status = readl(&ioc->chip->HostInterruptStatus);
2852                 if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2853                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2854                             "successful count(%d), timeout(%d)\n", ioc->name,
2855                             __func__, count, timeout));
2856                         return 0;
2857                 }
2858                 if (sleep_flag == CAN_SLEEP)
2859                         msleep(1);
2860                 else
2861                         udelay(500);
2862                 count++;
2863         } while (--cntdn);
2864
2865         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2866             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2867         return -EFAULT;
2868 }
2869
2870 /**
2871  * _base_wait_for_doorbell_ack - waiting for controller to read the doorbell.
2872  * @ioc: per adapter object
2873  * @timeout: timeout in second
2874  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2875  *
2876  * Returns 0 for success, non-zero for failure.
2877  *
2878  * Notes: MPI2_HIS_SYS2IOC_DB_STATUS - set to one when host writes to
2879  * doorbell.
2880  */
2881 static int
2882 _base_wait_for_doorbell_ack(struct MPT2SAS_ADAPTER *ioc, int timeout,
2883     int sleep_flag)
2884 {
2885         u32 cntdn, count;
2886         u32 int_status;
2887         u32 doorbell;
2888
2889         count = 0;
2890         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2891         do {
2892                 int_status = readl(&ioc->chip->HostInterruptStatus);
2893                 if (!(int_status & MPI2_HIS_SYS2IOC_DB_STATUS)) {
2894                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2895                             "successful count(%d), timeout(%d)\n", ioc->name,
2896                             __func__, count, timeout));
2897                         return 0;
2898                 } else if (int_status & MPI2_HIS_IOC2SYS_DB_STATUS) {
2899                         doorbell = readl(&ioc->chip->Doorbell);
2900                         if ((doorbell & MPI2_IOC_STATE_MASK) ==
2901                             MPI2_IOC_STATE_FAULT) {
2902                                 mpt2sas_base_fault_info(ioc , doorbell);
2903                                 return -EFAULT;
2904                         }
2905                 } else if (int_status == 0xFFFFFFFF)
2906                         goto out;
2907
2908                 if (sleep_flag == CAN_SLEEP)
2909                         msleep(1);
2910                 else
2911                         udelay(500);
2912                 count++;
2913         } while (--cntdn);
2914
2915  out:
2916         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2917             "int_status(%x)!\n", ioc->name, __func__, count, int_status);
2918         return -EFAULT;
2919 }
2920
2921 /**
2922  * _base_wait_for_doorbell_not_used - waiting for doorbell to not be in use
2923  * @ioc: per adapter object
2924  * @timeout: timeout in second
2925  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2926  *
2927  * Returns 0 for success, non-zero for failure.
2928  *
2929  */
2930 static int
2931 _base_wait_for_doorbell_not_used(struct MPT2SAS_ADAPTER *ioc, int timeout,
2932     int sleep_flag)
2933 {
2934         u32 cntdn, count;
2935         u32 doorbell_reg;
2936
2937         count = 0;
2938         cntdn = (sleep_flag == CAN_SLEEP) ? 1000*timeout : 2000*timeout;
2939         do {
2940                 doorbell_reg = readl(&ioc->chip->Doorbell);
2941                 if (!(doorbell_reg & MPI2_DOORBELL_USED)) {
2942                         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
2943                             "successful count(%d), timeout(%d)\n", ioc->name,
2944                             __func__, count, timeout));
2945                         return 0;
2946                 }
2947                 if (sleep_flag == CAN_SLEEP)
2948                         msleep(1);
2949                 else
2950                         udelay(500);
2951                 count++;
2952         } while (--cntdn);
2953
2954         printk(MPT2SAS_ERR_FMT "%s: failed due to timeout count(%d), "
2955             "doorbell_reg(%x)!\n", ioc->name, __func__, count, doorbell_reg);
2956         return -EFAULT;
2957 }
2958
2959 /**
2960  * _base_send_ioc_reset - send doorbell reset
2961  * @ioc: per adapter object
2962  * @reset_type: currently only supports: MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET
2963  * @timeout: timeout in second
2964  * @sleep_flag: CAN_SLEEP or NO_SLEEP
2965  *
2966  * Returns 0 for success, non-zero for failure.
2967  */
2968 static int
2969 _base_send_ioc_reset(struct MPT2SAS_ADAPTER *ioc, u8 reset_type, int timeout,
2970     int sleep_flag)
2971 {
2972         u32 ioc_state;
2973         int r = 0;
2974
2975         if (reset_type != MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET) {
2976                 printk(MPT2SAS_ERR_FMT "%s: unknown reset_type\n",
2977                     ioc->name, __func__);
2978                 return -EFAULT;
2979         }
2980
2981         if (!(ioc->facts.IOCCapabilities &
2982            MPI2_IOCFACTS_CAPABILITY_EVENT_REPLAY))
2983                 return -EFAULT;
2984
2985         printk(MPT2SAS_INFO_FMT "sending message unit reset !!\n", ioc->name);
2986
2987         writel(reset_type << MPI2_DOORBELL_FUNCTION_SHIFT,
2988             &ioc->chip->Doorbell);
2989         if ((_base_wait_for_doorbell_ack(ioc, 15, sleep_flag))) {
2990                 r = -EFAULT;
2991                 goto out;
2992         }
2993         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY,
2994             timeout, sleep_flag);
2995         if (ioc_state) {
2996                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
2997                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
2998                 r = -EFAULT;
2999                 goto out;
3000         }
3001  out:
3002         printk(MPT2SAS_INFO_FMT "message unit reset: %s\n",
3003             ioc->name, ((r == 0) ? "SUCCESS" : "FAILED"));
3004         return r;
3005 }
3006
3007 /**
3008  * _base_handshake_req_reply_wait - send request thru doorbell interface
3009  * @ioc: per adapter object
3010  * @request_bytes: request length
3011  * @request: pointer having request payload
3012  * @reply_bytes: reply length
3013  * @reply: pointer to reply payload
3014  * @timeout: timeout in second
3015  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3016  *
3017  * Returns 0 for success, non-zero for failure.
3018  */
3019 static int
3020 _base_handshake_req_reply_wait(struct MPT2SAS_ADAPTER *ioc, int request_bytes,
3021     u32 *request, int reply_bytes, u16 *reply, int timeout, int sleep_flag)
3022 {
3023         MPI2DefaultReply_t *default_reply = (MPI2DefaultReply_t *)reply;
3024         int i;
3025         u8 failed;
3026         u16 dummy;
3027         __le32 *mfp;
3028
3029         /* make sure doorbell is not in use */
3030         if ((readl(&ioc->chip->Doorbell) & MPI2_DOORBELL_USED)) {
3031                 printk(MPT2SAS_ERR_FMT "doorbell is in use "
3032                     " (line=%d)\n", ioc->name, __LINE__);
3033                 return -EFAULT;
3034         }
3035
3036         /* clear pending doorbell interrupts from previous state changes */
3037         if (readl(&ioc->chip->HostInterruptStatus) &
3038             MPI2_HIS_IOC2SYS_DB_STATUS)
3039                 writel(0, &ioc->chip->HostInterruptStatus);
3040
3041         /* send message to ioc */
3042         writel(((MPI2_FUNCTION_HANDSHAKE<<MPI2_DOORBELL_FUNCTION_SHIFT) |
3043             ((request_bytes/4)<<MPI2_DOORBELL_ADD_DWORDS_SHIFT)),
3044             &ioc->chip->Doorbell);
3045
3046         if ((_base_wait_for_doorbell_int(ioc, 5, NO_SLEEP))) {
3047                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3048                    "int failed (line=%d)\n", ioc->name, __LINE__);
3049                 return -EFAULT;
3050         }
3051         writel(0, &ioc->chip->HostInterruptStatus);
3052
3053         if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag))) {
3054                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3055                     "ack failed (line=%d)\n", ioc->name, __LINE__);
3056                 return -EFAULT;
3057         }
3058
3059         /* send message 32-bits at a time */
3060         for (i = 0, failed = 0; i < request_bytes/4 && !failed; i++) {
3061                 writel(cpu_to_le32(request[i]), &ioc->chip->Doorbell);
3062                 if ((_base_wait_for_doorbell_ack(ioc, 5, sleep_flag)))
3063                         failed = 1;
3064         }
3065
3066         if (failed) {
3067                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3068                     "sending request failed (line=%d)\n", ioc->name, __LINE__);
3069                 return -EFAULT;
3070         }
3071
3072         /* now wait for the reply */
3073         if ((_base_wait_for_doorbell_int(ioc, timeout, sleep_flag))) {
3074                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3075                    "int failed (line=%d)\n", ioc->name, __LINE__);
3076                 return -EFAULT;
3077         }
3078
3079         /* read the first two 16-bits, it gives the total length of the reply */
3080         reply[0] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3081             & MPI2_DOORBELL_DATA_MASK);
3082         writel(0, &ioc->chip->HostInterruptStatus);
3083         if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3084                 printk(MPT2SAS_ERR_FMT "doorbell handshake "
3085                    "int failed (line=%d)\n", ioc->name, __LINE__);
3086                 return -EFAULT;
3087         }
3088         reply[1] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3089             & MPI2_DOORBELL_DATA_MASK);
3090         writel(0, &ioc->chip->HostInterruptStatus);
3091
3092         for (i = 2; i < default_reply->MsgLength * 2; i++)  {
3093                 if ((_base_wait_for_doorbell_int(ioc, 5, sleep_flag))) {
3094                         printk(MPT2SAS_ERR_FMT "doorbell "
3095                             "handshake int failed (line=%d)\n", ioc->name,
3096                             __LINE__);
3097                         return -EFAULT;
3098                 }
3099                 if (i >=  reply_bytes/2) /* overflow case */
3100                         dummy = readl(&ioc->chip->Doorbell);
3101                 else
3102                         reply[i] = le16_to_cpu(readl(&ioc->chip->Doorbell)
3103                             & MPI2_DOORBELL_DATA_MASK);
3104                 writel(0, &ioc->chip->HostInterruptStatus);
3105         }
3106
3107         _base_wait_for_doorbell_int(ioc, 5, sleep_flag);
3108         if (_base_wait_for_doorbell_not_used(ioc, 5, sleep_flag) != 0) {
3109                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "doorbell is in use "
3110                     " (line=%d)\n", ioc->name, __LINE__));
3111         }
3112         writel(0, &ioc->chip->HostInterruptStatus);
3113
3114         if (ioc->logging_level & MPT_DEBUG_INIT) {
3115                 mfp = (__le32 *)reply;
3116                 printk(KERN_INFO "\toffset:data\n");
3117                 for (i = 0; i < reply_bytes/4; i++)
3118                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3119                             le32_to_cpu(mfp[i]));
3120         }
3121         return 0;
3122 }
3123
3124 /**
3125  * mpt2sas_base_sas_iounit_control - send sas iounit control to FW
3126  * @ioc: per adapter object
3127  * @mpi_reply: the reply payload from FW
3128  * @mpi_request: the request payload sent to FW
3129  *
3130  * The SAS IO Unit Control Request message allows the host to perform low-level
3131  * operations, such as resets on the PHYs of the IO Unit, also allows the host
3132  * to obtain the IOC assigned device handles for a device if it has other
3133  * identifying information about the device, in addition allows the host to
3134  * remove IOC resources associated with the device.
3135  *
3136  * Returns 0 for success, non-zero for failure.
3137  */
3138 int
3139 mpt2sas_base_sas_iounit_control(struct MPT2SAS_ADAPTER *ioc,
3140     Mpi2SasIoUnitControlReply_t *mpi_reply,
3141     Mpi2SasIoUnitControlRequest_t *mpi_request)
3142 {
3143         u16 smid;
3144         u32 ioc_state;
3145         unsigned long timeleft;
3146         u8 issue_reset;
3147         int rc;
3148         void *request;
3149         u16 wait_state_count;
3150
3151         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3152             __func__));
3153
3154         mutex_lock(&ioc->base_cmds.mutex);
3155
3156         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3157                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3158                     ioc->name, __func__);
3159                 rc = -EAGAIN;
3160                 goto out;
3161         }
3162
3163         wait_state_count = 0;
3164         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3165         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3166                 if (wait_state_count++ == 10) {
3167                         printk(MPT2SAS_ERR_FMT
3168                             "%s: failed due to ioc not operational\n",
3169                             ioc->name, __func__);
3170                         rc = -EFAULT;
3171                         goto out;
3172                 }
3173                 ssleep(1);
3174                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3175                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3176                     "operational state(count=%d)\n", ioc->name,
3177                     __func__, wait_state_count);
3178         }
3179
3180         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3181         if (!smid) {
3182                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3183                     ioc->name, __func__);
3184                 rc = -EAGAIN;
3185                 goto out;
3186         }
3187
3188         rc = 0;
3189         ioc->base_cmds.status = MPT2_CMD_PENDING;
3190         request = mpt2sas_base_get_msg_frame(ioc, smid);
3191         ioc->base_cmds.smid = smid;
3192         memcpy(request, mpi_request, sizeof(Mpi2SasIoUnitControlRequest_t));
3193         if (mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3194             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET)
3195                 ioc->ioc_link_reset_in_progress = 1;
3196         init_completion(&ioc->base_cmds.done);
3197         mpt2sas_base_put_smid_default(ioc, smid);
3198         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3199             msecs_to_jiffies(10000));
3200         if ((mpi_request->Operation == MPI2_SAS_OP_PHY_HARD_RESET ||
3201             mpi_request->Operation == MPI2_SAS_OP_PHY_LINK_RESET) &&
3202             ioc->ioc_link_reset_in_progress)
3203                 ioc->ioc_link_reset_in_progress = 0;
3204         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3205                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3206                     ioc->name, __func__);
3207                 _debug_dump_mf(mpi_request,
3208                     sizeof(Mpi2SasIoUnitControlRequest_t)/4);
3209                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3210                         issue_reset = 1;
3211                 goto issue_host_reset;
3212         }
3213         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3214                 memcpy(mpi_reply, ioc->base_cmds.reply,
3215                     sizeof(Mpi2SasIoUnitControlReply_t));
3216         else
3217                 memset(mpi_reply, 0, sizeof(Mpi2SasIoUnitControlReply_t));
3218         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3219         goto out;
3220
3221  issue_host_reset:
3222         if (issue_reset)
3223                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3224                     FORCE_BIG_HAMMER);
3225         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3226         rc = -EFAULT;
3227  out:
3228         mutex_unlock(&ioc->base_cmds.mutex);
3229         return rc;
3230 }
3231
3232
3233 /**
3234  * mpt2sas_base_scsi_enclosure_processor - sending request to sep device
3235  * @ioc: per adapter object
3236  * @mpi_reply: the reply payload from FW
3237  * @mpi_request: the request payload sent to FW
3238  *
3239  * The SCSI Enclosure Processor request message causes the IOC to
3240  * communicate with SES devices to control LED status signals.
3241  *
3242  * Returns 0 for success, non-zero for failure.
3243  */
3244 int
3245 mpt2sas_base_scsi_enclosure_processor(struct MPT2SAS_ADAPTER *ioc,
3246     Mpi2SepReply_t *mpi_reply, Mpi2SepRequest_t *mpi_request)
3247 {
3248         u16 smid;
3249         u32 ioc_state;
3250         unsigned long timeleft;
3251         u8 issue_reset;
3252         int rc;
3253         void *request;
3254         u16 wait_state_count;
3255
3256         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3257             __func__));
3258
3259         mutex_lock(&ioc->base_cmds.mutex);
3260
3261         if (ioc->base_cmds.status != MPT2_CMD_NOT_USED) {
3262                 printk(MPT2SAS_ERR_FMT "%s: base_cmd in use\n",
3263                     ioc->name, __func__);
3264                 rc = -EAGAIN;
3265                 goto out;
3266         }
3267
3268         wait_state_count = 0;
3269         ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3270         while (ioc_state != MPI2_IOC_STATE_OPERATIONAL) {
3271                 if (wait_state_count++ == 10) {
3272                         printk(MPT2SAS_ERR_FMT
3273                             "%s: failed due to ioc not operational\n",
3274                             ioc->name, __func__);
3275                         rc = -EFAULT;
3276                         goto out;
3277                 }
3278                 ssleep(1);
3279                 ioc_state = mpt2sas_base_get_iocstate(ioc, 1);
3280                 printk(MPT2SAS_INFO_FMT "%s: waiting for "
3281                     "operational state(count=%d)\n", ioc->name,
3282                     __func__, wait_state_count);
3283         }
3284
3285         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3286         if (!smid) {
3287                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3288                     ioc->name, __func__);
3289                 rc = -EAGAIN;
3290                 goto out;
3291         }
3292
3293         rc = 0;
3294         ioc->base_cmds.status = MPT2_CMD_PENDING;
3295         request = mpt2sas_base_get_msg_frame(ioc, smid);
3296         ioc->base_cmds.smid = smid;
3297         memcpy(request, mpi_request, sizeof(Mpi2SepReply_t));
3298         init_completion(&ioc->base_cmds.done);
3299         mpt2sas_base_put_smid_default(ioc, smid);
3300         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done,
3301             msecs_to_jiffies(10000));
3302         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3303                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3304                     ioc->name, __func__);
3305                 _debug_dump_mf(mpi_request,
3306                     sizeof(Mpi2SepRequest_t)/4);
3307                 if (!(ioc->base_cmds.status & MPT2_CMD_RESET))
3308                         issue_reset = 1;
3309                 goto issue_host_reset;
3310         }
3311         if (ioc->base_cmds.status & MPT2_CMD_REPLY_VALID)
3312                 memcpy(mpi_reply, ioc->base_cmds.reply,
3313                     sizeof(Mpi2SepReply_t));
3314         else
3315                 memset(mpi_reply, 0, sizeof(Mpi2SepReply_t));
3316         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3317         goto out;
3318
3319  issue_host_reset:
3320         if (issue_reset)
3321                 mpt2sas_base_hard_reset_handler(ioc, CAN_SLEEP,
3322                     FORCE_BIG_HAMMER);
3323         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3324         rc = -EFAULT;
3325  out:
3326         mutex_unlock(&ioc->base_cmds.mutex);
3327         return rc;
3328 }
3329
3330 /**
3331  * _base_get_port_facts - obtain port facts reply and save in ioc
3332  * @ioc: per adapter object
3333  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3334  *
3335  * Returns 0 for success, non-zero for failure.
3336  */
3337 static int
3338 _base_get_port_facts(struct MPT2SAS_ADAPTER *ioc, int port, int sleep_flag)
3339 {
3340         Mpi2PortFactsRequest_t mpi_request;
3341         Mpi2PortFactsReply_t mpi_reply;
3342         struct mpt2sas_port_facts *pfacts;
3343         int mpi_reply_sz, mpi_request_sz, r;
3344
3345         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3346             __func__));
3347
3348         mpi_reply_sz = sizeof(Mpi2PortFactsReply_t);
3349         mpi_request_sz = sizeof(Mpi2PortFactsRequest_t);
3350         memset(&mpi_request, 0, mpi_request_sz);
3351         mpi_request.Function = MPI2_FUNCTION_PORT_FACTS;
3352         mpi_request.PortNumber = port;
3353         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3354             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3355
3356         if (r != 0) {
3357                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3358                     ioc->name, __func__, r);
3359                 return r;
3360         }
3361
3362         pfacts = &ioc->pfacts[port];
3363         memset(pfacts, 0, sizeof(struct mpt2sas_port_facts));
3364         pfacts->PortNumber = mpi_reply.PortNumber;
3365         pfacts->VP_ID = mpi_reply.VP_ID;
3366         pfacts->VF_ID = mpi_reply.VF_ID;
3367         pfacts->MaxPostedCmdBuffers =
3368             le16_to_cpu(mpi_reply.MaxPostedCmdBuffers);
3369
3370         return 0;
3371 }
3372
3373 /**
3374  * _base_get_ioc_facts - obtain ioc facts reply and save in ioc
3375  * @ioc: per adapter object
3376  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3377  *
3378  * Returns 0 for success, non-zero for failure.
3379  */
3380 static int
3381 _base_get_ioc_facts(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3382 {
3383         Mpi2IOCFactsRequest_t mpi_request;
3384         Mpi2IOCFactsReply_t mpi_reply;
3385         struct mpt2sas_facts *facts;
3386         int mpi_reply_sz, mpi_request_sz, r;
3387
3388         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3389             __func__));
3390
3391         mpi_reply_sz = sizeof(Mpi2IOCFactsReply_t);
3392         mpi_request_sz = sizeof(Mpi2IOCFactsRequest_t);
3393         memset(&mpi_request, 0, mpi_request_sz);
3394         mpi_request.Function = MPI2_FUNCTION_IOC_FACTS;
3395         r = _base_handshake_req_reply_wait(ioc, mpi_request_sz,
3396             (u32 *)&mpi_request, mpi_reply_sz, (u16 *)&mpi_reply, 5, CAN_SLEEP);
3397
3398         if (r != 0) {
3399                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3400                     ioc->name, __func__, r);
3401                 return r;
3402         }
3403
3404         facts = &ioc->facts;
3405         memset(facts, 0, sizeof(struct mpt2sas_facts));
3406         facts->MsgVersion = le16_to_cpu(mpi_reply.MsgVersion);
3407         facts->HeaderVersion = le16_to_cpu(mpi_reply.HeaderVersion);
3408         facts->VP_ID = mpi_reply.VP_ID;
3409         facts->VF_ID = mpi_reply.VF_ID;
3410         facts->IOCExceptions = le16_to_cpu(mpi_reply.IOCExceptions);
3411         facts->MaxChainDepth = mpi_reply.MaxChainDepth;
3412         facts->WhoInit = mpi_reply.WhoInit;
3413         facts->NumberOfPorts = mpi_reply.NumberOfPorts;
3414         facts->MaxMSIxVectors = mpi_reply.MaxMSIxVectors;
3415         facts->RequestCredit = le16_to_cpu(mpi_reply.RequestCredit);
3416         facts->MaxReplyDescriptorPostQueueDepth =
3417             le16_to_cpu(mpi_reply.MaxReplyDescriptorPostQueueDepth);
3418         facts->ProductID = le16_to_cpu(mpi_reply.ProductID);
3419         facts->IOCCapabilities = le32_to_cpu(mpi_reply.IOCCapabilities);
3420         if ((facts->IOCCapabilities & MPI2_IOCFACTS_CAPABILITY_INTEGRATED_RAID))
3421                 ioc->ir_firmware = 1;
3422         facts->FWVersion.Word = le32_to_cpu(mpi_reply.FWVersion.Word);
3423         facts->IOCRequestFrameSize =
3424             le16_to_cpu(mpi_reply.IOCRequestFrameSize);
3425         facts->MaxInitiators = le16_to_cpu(mpi_reply.MaxInitiators);
3426         facts->MaxTargets = le16_to_cpu(mpi_reply.MaxTargets);
3427         ioc->shost->max_id = -1;
3428         facts->MaxSasExpanders = le16_to_cpu(mpi_reply.MaxSasExpanders);
3429         facts->MaxEnclosures = le16_to_cpu(mpi_reply.MaxEnclosures);
3430         facts->ProtocolFlags = le16_to_cpu(mpi_reply.ProtocolFlags);
3431         facts->HighPriorityCredit =
3432             le16_to_cpu(mpi_reply.HighPriorityCredit);
3433         facts->ReplyFrameSize = mpi_reply.ReplyFrameSize;
3434         facts->MaxDevHandle = le16_to_cpu(mpi_reply.MaxDevHandle);
3435
3436         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "hba queue depth(%d), "
3437             "max chains per io(%d)\n", ioc->name, facts->RequestCredit,
3438             facts->MaxChainDepth));
3439         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "request frame size(%d), "
3440             "reply frame size(%d)\n", ioc->name,
3441             facts->IOCRequestFrameSize * 4, facts->ReplyFrameSize * 4));
3442         return 0;
3443 }
3444
3445 /**
3446  * _base_send_ioc_init - send ioc_init to firmware
3447  * @ioc: per adapter object
3448  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3449  *
3450  * Returns 0 for success, non-zero for failure.
3451  */
3452 static int
3453 _base_send_ioc_init(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3454 {
3455         Mpi2IOCInitRequest_t mpi_request;
3456         Mpi2IOCInitReply_t mpi_reply;
3457         int r;
3458         struct timeval current_time;
3459         u16 ioc_status;
3460
3461         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3462             __func__));
3463
3464         memset(&mpi_request, 0, sizeof(Mpi2IOCInitRequest_t));
3465         mpi_request.Function = MPI2_FUNCTION_IOC_INIT;
3466         mpi_request.WhoInit = MPI2_WHOINIT_HOST_DRIVER;
3467         mpi_request.VF_ID = 0; /* TODO */
3468         mpi_request.VP_ID = 0;
3469         mpi_request.MsgVersion = cpu_to_le16(MPI2_VERSION);
3470         mpi_request.HeaderVersion = cpu_to_le16(MPI2_HEADER_VERSION);
3471
3472         if (_base_is_controller_msix_enabled(ioc))
3473                 mpi_request.HostMSIxVectors = ioc->reply_queue_count;
3474         mpi_request.SystemRequestFrameSize = cpu_to_le16(ioc->request_sz/4);
3475         mpi_request.ReplyDescriptorPostQueueDepth =
3476             cpu_to_le16(ioc->reply_post_queue_depth);
3477         mpi_request.ReplyFreeQueueDepth =
3478             cpu_to_le16(ioc->reply_free_queue_depth);
3479
3480         mpi_request.SenseBufferAddressHigh =
3481             cpu_to_le32((u64)ioc->sense_dma >> 32);
3482         mpi_request.SystemReplyAddressHigh =
3483             cpu_to_le32((u64)ioc->reply_dma >> 32);
3484         mpi_request.SystemRequestFrameBaseAddress =
3485             cpu_to_le64((u64)ioc->request_dma);
3486         mpi_request.ReplyFreeQueueAddress =
3487             cpu_to_le64((u64)ioc->reply_free_dma);
3488         mpi_request.ReplyDescriptorPostQueueAddress =
3489             cpu_to_le64((u64)ioc->reply_post_free_dma);
3490
3491
3492         /* This time stamp specifies number of milliseconds
3493          * since epoch ~ midnight January 1, 1970.
3494          */
3495         do_gettimeofday(&current_time);
3496         mpi_request.TimeStamp = cpu_to_le64((u64)current_time.tv_sec * 1000 +
3497             (current_time.tv_usec / 1000));
3498
3499         if (ioc->logging_level & MPT_DEBUG_INIT) {
3500                 __le32 *mfp;
3501                 int i;
3502
3503                 mfp = (__le32 *)&mpi_request;
3504                 printk(KERN_INFO "\toffset:data\n");
3505                 for (i = 0; i < sizeof(Mpi2IOCInitRequest_t)/4; i++)
3506                         printk(KERN_INFO "\t[0x%02x]:%08x\n", i*4,
3507                             le32_to_cpu(mfp[i]));
3508         }
3509
3510         r = _base_handshake_req_reply_wait(ioc,
3511             sizeof(Mpi2IOCInitRequest_t), (u32 *)&mpi_request,
3512             sizeof(Mpi2IOCInitReply_t), (u16 *)&mpi_reply, 10,
3513             sleep_flag);
3514
3515         if (r != 0) {
3516                 printk(MPT2SAS_ERR_FMT "%s: handshake failed (r=%d)\n",
3517                     ioc->name, __func__, r);
3518                 return r;
3519         }
3520
3521         ioc_status = le16_to_cpu(mpi_reply.IOCStatus) & MPI2_IOCSTATUS_MASK;
3522         if (ioc_status != MPI2_IOCSTATUS_SUCCESS ||
3523             mpi_reply.IOCLogInfo) {
3524                 printk(MPT2SAS_ERR_FMT "%s: failed\n", ioc->name, __func__);
3525                 r = -EIO;
3526         }
3527
3528         return 0;
3529 }
3530
3531 /**
3532  * mpt2sas_port_enable_done - command completion routine for port enable
3533  * @ioc: per adapter object
3534  * @smid: system request message index
3535  * @msix_index: MSIX table index supplied by the OS
3536  * @reply: reply message frame(lower 32bit addr)
3537  *
3538  * Return 1 meaning mf should be freed from _base_interrupt
3539  *        0 means the mf is freed from this function.
3540  */
3541 u8
3542 mpt2sas_port_enable_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
3543         u32 reply)
3544 {
3545         MPI2DefaultReply_t *mpi_reply;
3546         u16 ioc_status;
3547
3548         mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
3549         if (mpi_reply && mpi_reply->Function == MPI2_FUNCTION_EVENT_ACK)
3550                 return 1;
3551
3552         if (ioc->port_enable_cmds.status == MPT2_CMD_NOT_USED)
3553                 return 1;
3554
3555         ioc->port_enable_cmds.status |= MPT2_CMD_COMPLETE;
3556         if (mpi_reply) {
3557                 ioc->port_enable_cmds.status |= MPT2_CMD_REPLY_VALID;
3558                 memcpy(ioc->port_enable_cmds.reply, mpi_reply,
3559                     mpi_reply->MsgLength*4);
3560         }
3561         ioc->port_enable_cmds.status &= ~MPT2_CMD_PENDING;
3562
3563         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3564
3565         if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
3566                 ioc->port_enable_failed = 1;
3567
3568         if (ioc->is_driver_loading) {
3569                 if (ioc_status == MPI2_IOCSTATUS_SUCCESS) {
3570                         mpt2sas_port_enable_complete(ioc);
3571                         return 1;
3572                 } else {
3573                         ioc->start_scan_failed = ioc_status;
3574                         ioc->start_scan = 0;
3575                         return 1;
3576                 }
3577         }
3578         complete(&ioc->port_enable_cmds.done);
3579         return 1;
3580 }
3581
3582
3583 /**
3584  * _base_send_port_enable - send port_enable(discovery stuff) to firmware
3585  * @ioc: per adapter object
3586  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3587  *
3588  * Returns 0 for success, non-zero for failure.
3589  */
3590 static int
3591 _base_send_port_enable(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3592 {
3593         Mpi2PortEnableRequest_t *mpi_request;
3594         Mpi2PortEnableReply_t *mpi_reply;
3595         unsigned long timeleft;
3596         int r = 0;
3597         u16 smid;
3598         u16 ioc_status;
3599
3600         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3601
3602         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3603                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3604                     ioc->name, __func__);
3605                 return -EAGAIN;
3606         }
3607
3608         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3609         if (!smid) {
3610                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3611                     ioc->name, __func__);
3612                 return -EAGAIN;
3613         }
3614
3615         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3616         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3617         ioc->port_enable_cmds.smid = smid;
3618         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3619         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3620
3621         init_completion(&ioc->port_enable_cmds.done);
3622         mpt2sas_base_put_smid_default(ioc, smid);
3623         timeleft = wait_for_completion_timeout(&ioc->port_enable_cmds.done,
3624             300*HZ);
3625         if (!(ioc->port_enable_cmds.status & MPT2_CMD_COMPLETE)) {
3626                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3627                     ioc->name, __func__);
3628                 _debug_dump_mf(mpi_request,
3629                     sizeof(Mpi2PortEnableRequest_t)/4);
3630                 if (ioc->port_enable_cmds.status & MPT2_CMD_RESET)
3631                         r = -EFAULT;
3632                 else
3633                         r = -ETIME;
3634                 goto out;
3635         }
3636         mpi_reply = ioc->port_enable_cmds.reply;
3637
3638         ioc_status = le16_to_cpu(mpi_reply->IOCStatus) & MPI2_IOCSTATUS_MASK;
3639         if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
3640                 printk(MPT2SAS_ERR_FMT "%s: failed with (ioc_status=0x%08x)\n",
3641                     ioc->name, __func__, ioc_status);
3642                 r = -EFAULT;
3643                 goto out;
3644         }
3645  out:
3646         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
3647         printk(MPT2SAS_INFO_FMT "port enable: %s\n", ioc->name, ((r == 0) ?
3648             "SUCCESS" : "FAILED"));
3649         return r;
3650 }
3651
3652 /**
3653  * mpt2sas_port_enable - initiate firmware discovery (don't wait for reply)
3654  * @ioc: per adapter object
3655  *
3656  * Returns 0 for success, non-zero for failure.
3657  */
3658 int
3659 mpt2sas_port_enable(struct MPT2SAS_ADAPTER *ioc)
3660 {
3661         Mpi2PortEnableRequest_t *mpi_request;
3662         u16 smid;
3663
3664         printk(MPT2SAS_INFO_FMT "sending port enable !!\n", ioc->name);
3665
3666         if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
3667                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3668                     ioc->name, __func__);
3669                 return -EAGAIN;
3670         }
3671
3672         smid = mpt2sas_base_get_smid(ioc, ioc->port_enable_cb_idx);
3673         if (!smid) {
3674                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3675                     ioc->name, __func__);
3676                 return -EAGAIN;
3677         }
3678
3679         ioc->port_enable_cmds.status = MPT2_CMD_PENDING;
3680         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3681         ioc->port_enable_cmds.smid = smid;
3682         memset(mpi_request, 0, sizeof(Mpi2PortEnableRequest_t));
3683         mpi_request->Function = MPI2_FUNCTION_PORT_ENABLE;
3684
3685         mpt2sas_base_put_smid_default(ioc, smid);
3686         return 0;
3687 }
3688
3689 /**
3690  * _base_determine_wait_on_discovery - desposition
3691  * @ioc: per adapter object
3692  *
3693  * Decide whether to wait on discovery to complete. Used to either
3694  * locate boot device, or report volumes ahead of physical devices.
3695  *
3696  * Returns 1 for wait, 0 for don't wait
3697  */
3698 static int
3699 _base_determine_wait_on_discovery(struct MPT2SAS_ADAPTER *ioc)
3700 {
3701         /* We wait for discovery to complete if IR firmware is loaded.
3702          * The sas topology events arrive before PD events, so we need time to
3703          * turn on the bit in ioc->pd_handles to indicate PD
3704          * Also, it maybe required to report Volumes ahead of physical
3705          * devices when MPI2_IOCPAGE8_IRFLAGS_LOW_VOLUME_MAPPING is set.
3706          */
3707         if (ioc->ir_firmware)
3708                 return 1;
3709
3710         /* if no Bios, then we don't need to wait */
3711         if (!ioc->bios_pg3.BiosVersion)
3712                 return 0;
3713
3714         /* Bios is present, then we drop down here.
3715          *
3716          * If there any entries in the Bios Page 2, then we wait
3717          * for discovery to complete.
3718          */
3719
3720         /* Current Boot Device */
3721         if ((ioc->bios_pg2.CurrentBootDeviceForm &
3722             MPI2_BIOSPAGE2_FORM_MASK) ==
3723             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3724         /* Request Boot Device */
3725            (ioc->bios_pg2.ReqBootDeviceForm &
3726             MPI2_BIOSPAGE2_FORM_MASK) ==
3727             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED &&
3728         /* Alternate Request Boot Device */
3729            (ioc->bios_pg2.ReqAltBootDeviceForm &
3730             MPI2_BIOSPAGE2_FORM_MASK) ==
3731             MPI2_BIOSPAGE2_FORM_NO_DEVICE_SPECIFIED)
3732                 return 0;
3733
3734         return 1;
3735 }
3736
3737
3738 /**
3739  * _base_unmask_events - turn on notification for this event
3740  * @ioc: per adapter object
3741  * @event: firmware event
3742  *
3743  * The mask is stored in ioc->event_masks.
3744  */
3745 static void
3746 _base_unmask_events(struct MPT2SAS_ADAPTER *ioc, u16 event)
3747 {
3748         u32 desired_event;
3749
3750         if (event >= 128)
3751                 return;
3752
3753         desired_event = (1 << (event % 32));
3754
3755         if (event < 32)
3756                 ioc->event_masks[0] &= ~desired_event;
3757         else if (event < 64)
3758                 ioc->event_masks[1] &= ~desired_event;
3759         else if (event < 96)
3760                 ioc->event_masks[2] &= ~desired_event;
3761         else if (event < 128)
3762                 ioc->event_masks[3] &= ~desired_event;
3763 }
3764
3765 /**
3766  * _base_event_notification - send event notification
3767  * @ioc: per adapter object
3768  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3769  *
3770  * Returns 0 for success, non-zero for failure.
3771  */
3772 static int
3773 _base_event_notification(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3774 {
3775         Mpi2EventNotificationRequest_t *mpi_request;
3776         unsigned long timeleft;
3777         u16 smid;
3778         int r = 0;
3779         int i;
3780
3781         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3782             __func__));
3783
3784         if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
3785                 printk(MPT2SAS_ERR_FMT "%s: internal command already in use\n",
3786                     ioc->name, __func__);
3787                 return -EAGAIN;
3788         }
3789
3790         smid = mpt2sas_base_get_smid(ioc, ioc->base_cb_idx);
3791         if (!smid) {
3792                 printk(MPT2SAS_ERR_FMT "%s: failed obtaining a smid\n",
3793                     ioc->name, __func__);
3794                 return -EAGAIN;
3795         }
3796         ioc->base_cmds.status = MPT2_CMD_PENDING;
3797         mpi_request = mpt2sas_base_get_msg_frame(ioc, smid);
3798         ioc->base_cmds.smid = smid;
3799         memset(mpi_request, 0, sizeof(Mpi2EventNotificationRequest_t));
3800         mpi_request->Function = MPI2_FUNCTION_EVENT_NOTIFICATION;
3801         mpi_request->VF_ID = 0; /* TODO */
3802         mpi_request->VP_ID = 0;
3803         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
3804                 mpi_request->EventMasks[i] =
3805                     cpu_to_le32(ioc->event_masks[i]);
3806         init_completion(&ioc->base_cmds.done);
3807         mpt2sas_base_put_smid_default(ioc, smid);
3808         timeleft = wait_for_completion_timeout(&ioc->base_cmds.done, 30*HZ);
3809         if (!(ioc->base_cmds.status & MPT2_CMD_COMPLETE)) {
3810                 printk(MPT2SAS_ERR_FMT "%s: timeout\n",
3811                     ioc->name, __func__);
3812                 _debug_dump_mf(mpi_request,
3813                     sizeof(Mpi2EventNotificationRequest_t)/4);
3814                 if (ioc->base_cmds.status & MPT2_CMD_RESET)
3815                         r = -EFAULT;
3816                 else
3817                         r = -ETIME;
3818         } else
3819                 dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: complete\n",
3820                     ioc->name, __func__));
3821         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
3822         return r;
3823 }
3824
3825 /**
3826  * mpt2sas_base_validate_event_type - validating event types
3827  * @ioc: per adapter object
3828  * @event: firmware event
3829  *
3830  * This will turn on firmware event notification when application
3831  * ask for that event. We don't mask events that are already enabled.
3832  */
3833 void
3834 mpt2sas_base_validate_event_type(struct MPT2SAS_ADAPTER *ioc, u32 *event_type)
3835 {
3836         int i, j;
3837         u32 event_mask, desired_event;
3838         u8 send_update_to_fw;
3839
3840         for (i = 0, send_update_to_fw = 0; i <
3841             MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++) {
3842                 event_mask = ~event_type[i];
3843                 desired_event = 1;
3844                 for (j = 0; j < 32; j++) {
3845                         if (!(event_mask & desired_event) &&
3846                             (ioc->event_masks[i] & desired_event)) {
3847                                 ioc->event_masks[i] &= ~desired_event;
3848                                 send_update_to_fw = 1;
3849                         }
3850                         desired_event = (desired_event << 1);
3851                 }
3852         }
3853
3854         if (!send_update_to_fw)
3855                 return;
3856
3857         mutex_lock(&ioc->base_cmds.mutex);
3858         _base_event_notification(ioc, CAN_SLEEP);
3859         mutex_unlock(&ioc->base_cmds.mutex);
3860 }
3861
3862 /**
3863  * _base_diag_reset - the "big hammer" start of day reset
3864  * @ioc: per adapter object
3865  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3866  *
3867  * Returns 0 for success, non-zero for failure.
3868  */
3869 static int
3870 _base_diag_reset(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
3871 {
3872         u32 host_diagnostic;
3873         u32 ioc_state;
3874         u32 count;
3875         u32 hcb_size;
3876
3877         printk(MPT2SAS_INFO_FMT "sending diag reset !!\n", ioc->name);
3878         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "clear interrupts\n",
3879             ioc->name));
3880
3881         count = 0;
3882         do {
3883                 /* Write magic sequence to WriteSequence register
3884                  * Loop until in diagnostic mode
3885                  */
3886                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "write magic "
3887                     "sequence\n", ioc->name));
3888                 writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3889                 writel(MPI2_WRSEQ_1ST_KEY_VALUE, &ioc->chip->WriteSequence);
3890                 writel(MPI2_WRSEQ_2ND_KEY_VALUE, &ioc->chip->WriteSequence);
3891                 writel(MPI2_WRSEQ_3RD_KEY_VALUE, &ioc->chip->WriteSequence);
3892                 writel(MPI2_WRSEQ_4TH_KEY_VALUE, &ioc->chip->WriteSequence);
3893                 writel(MPI2_WRSEQ_5TH_KEY_VALUE, &ioc->chip->WriteSequence);
3894                 writel(MPI2_WRSEQ_6TH_KEY_VALUE, &ioc->chip->WriteSequence);
3895
3896                 /* wait 100 msec */
3897                 if (sleep_flag == CAN_SLEEP)
3898                         msleep(100);
3899                 else
3900                         mdelay(100);
3901
3902                 if (count++ > 20)
3903                         goto out;
3904
3905                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3906                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "wrote magic "
3907                     "sequence: count(%d), host_diagnostic(0x%08x)\n",
3908                     ioc->name, count, host_diagnostic));
3909
3910         } while ((host_diagnostic & MPI2_DIAG_DIAG_WRITE_ENABLE) == 0);
3911
3912         hcb_size = readl(&ioc->chip->HCBSize);
3913
3914         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "diag reset: issued\n",
3915             ioc->name));
3916         writel(host_diagnostic | MPI2_DIAG_RESET_ADAPTER,
3917              &ioc->chip->HostDiagnostic);
3918
3919         /* don't access any registers for 50 milliseconds */
3920         msleep(50);
3921
3922         /* 300 second max wait */
3923         for (count = 0; count < 3000000 ; count++) {
3924
3925                 host_diagnostic = readl(&ioc->chip->HostDiagnostic);
3926
3927                 if (host_diagnostic == 0xFFFFFFFF)
3928                         goto out;
3929                 if (!(host_diagnostic & MPI2_DIAG_RESET_ADAPTER))
3930                         break;
3931
3932                 /* wait 100 msec */
3933                 if (sleep_flag == CAN_SLEEP)
3934                         msleep(1);
3935                 else
3936                         mdelay(1);
3937         }
3938
3939         if (host_diagnostic & MPI2_DIAG_HCB_MODE) {
3940
3941                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter "
3942                     "assuming the HCB Address points to good F/W\n",
3943                     ioc->name));
3944                 host_diagnostic &= ~MPI2_DIAG_BOOT_DEVICE_SELECT_MASK;
3945                 host_diagnostic |= MPI2_DIAG_BOOT_DEVICE_SELECT_HCDW;
3946                 writel(host_diagnostic, &ioc->chip->HostDiagnostic);
3947
3948                 drsprintk(ioc, printk(MPT2SAS_INFO_FMT
3949                     "re-enable the HCDW\n", ioc->name));
3950                 writel(hcb_size | MPI2_HCB_SIZE_HCB_ENABLE,
3951                     &ioc->chip->HCBSize);
3952         }
3953
3954         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "restart the adapter\n",
3955             ioc->name));
3956         writel(host_diagnostic & ~MPI2_DIAG_HOLD_IOC_RESET,
3957             &ioc->chip->HostDiagnostic);
3958
3959         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "disable writes to the "
3960             "diagnostic register\n", ioc->name));
3961         writel(MPI2_WRSEQ_FLUSH_KEY_VALUE, &ioc->chip->WriteSequence);
3962
3963         drsprintk(ioc, printk(MPT2SAS_INFO_FMT "Wait for FW to go to the "
3964             "READY state\n", ioc->name));
3965         ioc_state = _base_wait_on_iocstate(ioc, MPI2_IOC_STATE_READY, 20,
3966             sleep_flag);
3967         if (ioc_state) {
3968                 printk(MPT2SAS_ERR_FMT "%s: failed going to ready state "
3969                     " (ioc_state=0x%x)\n", ioc->name, __func__, ioc_state);
3970                 goto out;
3971         }
3972
3973         printk(MPT2SAS_INFO_FMT "diag reset: SUCCESS\n", ioc->name);
3974         return 0;
3975
3976  out:
3977         printk(MPT2SAS_ERR_FMT "diag reset: FAILED\n", ioc->name);
3978         return -EFAULT;
3979 }
3980
3981 /**
3982  * _base_make_ioc_ready - put controller in READY state
3983  * @ioc: per adapter object
3984  * @sleep_flag: CAN_SLEEP or NO_SLEEP
3985  * @type: FORCE_BIG_HAMMER or SOFT_RESET
3986  *
3987  * Returns 0 for success, non-zero for failure.
3988  */
3989 static int
3990 _base_make_ioc_ready(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
3991     enum reset_type type)
3992 {
3993         u32 ioc_state;
3994         int rc;
3995
3996         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
3997             __func__));
3998
3999         if (ioc->pci_error_recovery)
4000                 return 0;
4001
4002         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4003         dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: ioc_state(0x%08x)\n",
4004             ioc->name, __func__, ioc_state));
4005
4006         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_READY)
4007                 return 0;
4008
4009         if (ioc_state & MPI2_DOORBELL_USED) {
4010                 dhsprintk(ioc, printk(MPT2SAS_INFO_FMT "unexpected doorbell "
4011                     "active!\n", ioc->name));
4012                 goto issue_diag_reset;
4013         }
4014
4015         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_FAULT) {
4016                 mpt2sas_base_fault_info(ioc, ioc_state &
4017                     MPI2_DOORBELL_DATA_MASK);
4018                 goto issue_diag_reset;
4019         }
4020
4021         if (type == FORCE_BIG_HAMMER)
4022                 goto issue_diag_reset;
4023
4024         if ((ioc_state & MPI2_IOC_STATE_MASK) == MPI2_IOC_STATE_OPERATIONAL)
4025                 if (!(_base_send_ioc_reset(ioc,
4026                     MPI2_FUNCTION_IOC_MESSAGE_UNIT_RESET, 15, CAN_SLEEP))) {
4027                         ioc->ioc_reset_count++;
4028                         return 0;
4029         }
4030
4031  issue_diag_reset:
4032         rc = _base_diag_reset(ioc, CAN_SLEEP);
4033         ioc->ioc_reset_count++;
4034         return rc;
4035 }
4036
4037 /**
4038  * _base_make_ioc_operational - put controller in OPERATIONAL state
4039  * @ioc: per adapter object
4040  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4041  *
4042  * Returns 0 for success, non-zero for failure.
4043  */
4044 static int
4045 _base_make_ioc_operational(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4046 {
4047         int r, i;
4048         unsigned long   flags;
4049         u32 reply_address;
4050         u16 smid;
4051         struct _tr_list *delayed_tr, *delayed_tr_next;
4052         u8 hide_flag;
4053         struct adapter_reply_queue *reply_q;
4054         long reply_post_free;
4055         u32 reply_post_free_sz;
4056
4057         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4058             __func__));
4059
4060         /* clean the delayed target reset list */
4061         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4062             &ioc->delayed_tr_list, list) {
4063                 list_del(&delayed_tr->list);
4064                 kfree(delayed_tr);
4065         }
4066
4067         list_for_each_entry_safe(delayed_tr, delayed_tr_next,
4068             &ioc->delayed_tr_volume_list, list) {
4069                 list_del(&delayed_tr->list);
4070                 kfree(delayed_tr);
4071         }
4072
4073         /* initialize the scsi lookup free list */
4074         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4075         INIT_LIST_HEAD(&ioc->free_list);
4076         smid = 1;
4077         for (i = 0; i < ioc->scsiio_depth; i++, smid++) {
4078                 INIT_LIST_HEAD(&ioc->scsi_lookup[i].chain_list);
4079                 ioc->scsi_lookup[i].cb_idx = 0xFF;
4080                 ioc->scsi_lookup[i].smid = smid;
4081                 ioc->scsi_lookup[i].scmd = NULL;
4082                 ioc->scsi_lookup[i].direct_io = 0;
4083                 list_add_tail(&ioc->scsi_lookup[i].tracker_list,
4084                     &ioc->free_list);
4085         }
4086
4087         /* hi-priority queue */
4088         INIT_LIST_HEAD(&ioc->hpr_free_list);
4089         smid = ioc->hi_priority_smid;
4090         for (i = 0; i < ioc->hi_priority_depth; i++, smid++) {
4091                 ioc->hpr_lookup[i].cb_idx = 0xFF;
4092                 ioc->hpr_lookup[i].smid = smid;
4093                 list_add_tail(&ioc->hpr_lookup[i].tracker_list,
4094                     &ioc->hpr_free_list);
4095         }
4096
4097         /* internal queue */
4098         INIT_LIST_HEAD(&ioc->internal_free_list);
4099         smid = ioc->internal_smid;
4100         for (i = 0; i < ioc->internal_depth; i++, smid++) {
4101                 ioc->internal_lookup[i].cb_idx = 0xFF;
4102                 ioc->internal_lookup[i].smid = smid;
4103                 list_add_tail(&ioc->internal_lookup[i].tracker_list,
4104                     &ioc->internal_free_list);
4105         }
4106
4107         /* chain pool */
4108         INIT_LIST_HEAD(&ioc->free_chain_list);
4109         for (i = 0; i < ioc->chain_depth; i++)
4110                 list_add_tail(&ioc->chain_lookup[i].tracker_list,
4111                     &ioc->free_chain_list);
4112
4113         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4114
4115         /* initialize Reply Free Queue */
4116         for (i = 0, reply_address = (u32)ioc->reply_dma ;
4117             i < ioc->reply_free_queue_depth ; i++, reply_address +=
4118             ioc->reply_sz)
4119                 ioc->reply_free[i] = cpu_to_le32(reply_address);
4120
4121         /* initialize reply queues */
4122         if (ioc->is_driver_loading)
4123                 _base_assign_reply_queues(ioc);
4124
4125         /* initialize Reply Post Free Queue */
4126         reply_post_free = (long)ioc->reply_post_free;
4127         reply_post_free_sz = ioc->reply_post_queue_depth *
4128             sizeof(Mpi2DefaultReplyDescriptor_t);
4129         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4130                 reply_q->reply_post_host_index = 0;
4131                 reply_q->reply_post_free = (Mpi2ReplyDescriptorsUnion_t *)
4132                     reply_post_free;
4133                 for (i = 0; i < ioc->reply_post_queue_depth; i++)
4134                         reply_q->reply_post_free[i].Words =
4135                                                         cpu_to_le64(ULLONG_MAX);
4136                 if (!_base_is_controller_msix_enabled(ioc))
4137                         goto skip_init_reply_post_free_queue;
4138                 reply_post_free += reply_post_free_sz;
4139         }
4140  skip_init_reply_post_free_queue:
4141
4142         r = _base_send_ioc_init(ioc, sleep_flag);
4143         if (r)
4144                 return r;
4145
4146         /* initialize reply free host index */
4147         ioc->reply_free_host_index = ioc->reply_free_queue_depth - 1;
4148         writel(ioc->reply_free_host_index, &ioc->chip->ReplyFreeHostIndex);
4149
4150         /* initialize reply post host index */
4151         list_for_each_entry(reply_q, &ioc->reply_queue_list, list) {
4152                 writel(reply_q->msix_index << MPI2_RPHI_MSIX_INDEX_SHIFT,
4153                     &ioc->chip->ReplyPostHostIndex);
4154                 if (!_base_is_controller_msix_enabled(ioc))
4155                         goto skip_init_reply_post_host_index;
4156         }
4157
4158  skip_init_reply_post_host_index:
4159
4160         _base_unmask_interrupts(ioc);
4161
4162         r = _base_event_notification(ioc, sleep_flag);
4163         if (r)
4164                 return r;
4165
4166         if (sleep_flag == CAN_SLEEP)
4167                 _base_static_config_pages(ioc);
4168
4169
4170         if (ioc->is_driver_loading) {
4171                 if (ioc->is_warpdrive && ioc->manu_pg10.OEMIdentifier
4172                     == 0x80) {
4173                         hide_flag = (u8) (
4174                             le32_to_cpu(ioc->manu_pg10.OEMSpecificFlags0) &
4175                             MFG_PAGE10_HIDE_SSDS_MASK);
4176                         if (hide_flag != MFG_PAGE10_HIDE_SSDS_MASK)
4177                                 ioc->mfg_pg10_hide_flag = hide_flag;
4178                 }
4179                 ioc->wait_for_discovery_to_complete =
4180                     _base_determine_wait_on_discovery(ioc);
4181                 return r; /* scan_start and scan_finished support */
4182         }
4183         r = _base_send_port_enable(ioc, sleep_flag);
4184         if (r)
4185                 return r;
4186
4187         return r;
4188 }
4189
4190 /**
4191  * mpt2sas_base_free_resources - free resources controller resources (io/irq/memap)
4192  * @ioc: per adapter object
4193  *
4194  * Return nothing.
4195  */
4196 void
4197 mpt2sas_base_free_resources(struct MPT2SAS_ADAPTER *ioc)
4198 {
4199         struct pci_dev *pdev = ioc->pdev;
4200
4201         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4202             __func__));
4203
4204         _base_mask_interrupts(ioc);
4205         ioc->shost_recovery = 1;
4206         _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4207         ioc->shost_recovery = 0;
4208         _base_free_irq(ioc);
4209         _base_disable_msix(ioc);
4210         if (ioc->chip_phys)
4211                 iounmap(ioc->chip);
4212         ioc->chip_phys = 0;
4213         pci_release_selected_regions(ioc->pdev, ioc->bars);
4214         pci_disable_pcie_error_reporting(pdev);
4215         pci_disable_device(pdev);
4216         return;
4217 }
4218
4219 /**
4220  * mpt2sas_base_attach - attach controller instance
4221  * @ioc: per adapter object
4222  *
4223  * Returns 0 for success, non-zero for failure.
4224  */
4225 int
4226 mpt2sas_base_attach(struct MPT2SAS_ADAPTER *ioc)
4227 {
4228         int r, i;
4229         int cpu_id, last_cpu_id = 0;
4230
4231         dinitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4232             __func__));
4233
4234         /* setup cpu_msix_table */
4235         ioc->cpu_count = num_online_cpus();
4236         for_each_online_cpu(cpu_id)
4237                 last_cpu_id = cpu_id;
4238         ioc->cpu_msix_table_sz = last_cpu_id + 1;
4239         ioc->cpu_msix_table = kzalloc(ioc->cpu_msix_table_sz, GFP_KERNEL);
4240         ioc->reply_queue_count = 1;
4241         if (!ioc->cpu_msix_table) {
4242                 dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation for "
4243                     "cpu_msix_table failed!!!\n", ioc->name));
4244                 r = -ENOMEM;
4245                 goto out_free_resources;
4246         }
4247
4248         if (ioc->is_warpdrive) {
4249                 ioc->reply_post_host_index = kcalloc(ioc->cpu_msix_table_sz,
4250                     sizeof(resource_size_t *), GFP_KERNEL);
4251                 if (!ioc->reply_post_host_index) {
4252                         dfailprintk(ioc, printk(MPT2SAS_INFO_FMT "allocation "
4253                                 "for cpu_msix_table failed!!!\n", ioc->name));
4254                         r = -ENOMEM;
4255                         goto out_free_resources;
4256                 }
4257         }
4258
4259         r = mpt2sas_base_map_resources(ioc);
4260         if (r)
4261                 goto out_free_resources;
4262
4263         if (ioc->is_warpdrive) {
4264                 ioc->reply_post_host_index[0] =
4265                     (resource_size_t *)&ioc->chip->ReplyPostHostIndex;
4266
4267                 for (i = 1; i < ioc->cpu_msix_table_sz; i++)
4268                         ioc->reply_post_host_index[i] = (resource_size_t *)
4269                         ((u8 *)&ioc->chip->Doorbell + (0x4000 + ((i - 1)
4270                         * 4)));
4271         }
4272
4273         pci_set_drvdata(ioc->pdev, ioc->shost);
4274         r = _base_get_ioc_facts(ioc, CAN_SLEEP);
4275         if (r)
4276                 goto out_free_resources;
4277
4278         r = _base_make_ioc_ready(ioc, CAN_SLEEP, SOFT_RESET);
4279         if (r)
4280                 goto out_free_resources;
4281
4282         ioc->pfacts = kcalloc(ioc->facts.NumberOfPorts,
4283             sizeof(struct mpt2sas_port_facts), GFP_KERNEL);
4284         if (!ioc->pfacts) {
4285                 r = -ENOMEM;
4286                 goto out_free_resources;
4287         }
4288
4289         for (i = 0 ; i < ioc->facts.NumberOfPorts; i++) {
4290                 r = _base_get_port_facts(ioc, i, CAN_SLEEP);
4291                 if (r)
4292                         goto out_free_resources;
4293         }
4294
4295         r = _base_allocate_memory_pools(ioc, CAN_SLEEP);
4296         if (r)
4297                 goto out_free_resources;
4298
4299         init_waitqueue_head(&ioc->reset_wq);
4300         /* allocate memory pd handle bitmask list */
4301         ioc->pd_handles_sz = (ioc->facts.MaxDevHandle / 8);
4302         if (ioc->facts.MaxDevHandle % 8)
4303                 ioc->pd_handles_sz++;
4304         ioc->pd_handles = kzalloc(ioc->pd_handles_sz,
4305             GFP_KERNEL);
4306         if (!ioc->pd_handles) {
4307                 r = -ENOMEM;
4308                 goto out_free_resources;
4309         }
4310         ioc->blocking_handles = kzalloc(ioc->pd_handles_sz,
4311             GFP_KERNEL);
4312         if (!ioc->blocking_handles) {
4313                 r = -ENOMEM;
4314                 goto out_free_resources;
4315         }
4316         ioc->fwfault_debug = mpt2sas_fwfault_debug;
4317
4318         /* base internal command bits */
4319         mutex_init(&ioc->base_cmds.mutex);
4320         ioc->base_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4321         ioc->base_cmds.status = MPT2_CMD_NOT_USED;
4322
4323         /* port_enable command bits */
4324         ioc->port_enable_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4325         ioc->port_enable_cmds.status = MPT2_CMD_NOT_USED;
4326
4327         /* transport internal command bits */
4328         ioc->transport_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4329         ioc->transport_cmds.status = MPT2_CMD_NOT_USED;
4330         mutex_init(&ioc->transport_cmds.mutex);
4331
4332         /* scsih internal command bits */
4333         ioc->scsih_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4334         ioc->scsih_cmds.status = MPT2_CMD_NOT_USED;
4335         mutex_init(&ioc->scsih_cmds.mutex);
4336
4337         /* task management internal command bits */
4338         ioc->tm_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4339         ioc->tm_cmds.status = MPT2_CMD_NOT_USED;
4340         mutex_init(&ioc->tm_cmds.mutex);
4341
4342         /* config page internal command bits */
4343         ioc->config_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4344         ioc->config_cmds.status = MPT2_CMD_NOT_USED;
4345         mutex_init(&ioc->config_cmds.mutex);
4346
4347         /* ctl module internal command bits */
4348         ioc->ctl_cmds.reply = kzalloc(ioc->reply_sz, GFP_KERNEL);
4349         ioc->ctl_cmds.sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
4350         ioc->ctl_cmds.status = MPT2_CMD_NOT_USED;
4351         mutex_init(&ioc->ctl_cmds.mutex);
4352
4353         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4354             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4355             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply ||
4356             !ioc->ctl_cmds.sense) {
4357                 r = -ENOMEM;
4358                 goto out_free_resources;
4359         }
4360
4361         if (!ioc->base_cmds.reply || !ioc->transport_cmds.reply ||
4362             !ioc->scsih_cmds.reply || !ioc->tm_cmds.reply ||
4363             !ioc->config_cmds.reply || !ioc->ctl_cmds.reply) {
4364                 r = -ENOMEM;
4365                 goto out_free_resources;
4366         }
4367
4368         for (i = 0; i < MPI2_EVENT_NOTIFY_EVENTMASK_WORDS; i++)
4369                 ioc->event_masks[i] = -1;
4370
4371         /* here we enable the events we care about */
4372         _base_unmask_events(ioc, MPI2_EVENT_SAS_DISCOVERY);
4373         _base_unmask_events(ioc, MPI2_EVENT_SAS_BROADCAST_PRIMITIVE);
4374         _base_unmask_events(ioc, MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST);
4375         _base_unmask_events(ioc, MPI2_EVENT_SAS_DEVICE_STATUS_CHANGE);
4376         _base_unmask_events(ioc, MPI2_EVENT_SAS_ENCL_DEVICE_STATUS_CHANGE);
4377         _base_unmask_events(ioc, MPI2_EVENT_IR_CONFIGURATION_CHANGE_LIST);
4378         _base_unmask_events(ioc, MPI2_EVENT_IR_VOLUME);
4379         _base_unmask_events(ioc, MPI2_EVENT_IR_PHYSICAL_DISK);
4380         _base_unmask_events(ioc, MPI2_EVENT_IR_OPERATION_STATUS);
4381         _base_unmask_events(ioc, MPI2_EVENT_LOG_ENTRY_ADDED);
4382         r = _base_make_ioc_operational(ioc, CAN_SLEEP);
4383         if (r)
4384                 goto out_free_resources;
4385
4386         if (missing_delay[0] != -1 && missing_delay[1] != -1)
4387                 _base_update_missing_delay(ioc, missing_delay[0],
4388                     missing_delay[1]);
4389
4390         return 0;
4391
4392  out_free_resources:
4393
4394         ioc->remove_host = 1;
4395         mpt2sas_base_free_resources(ioc);
4396         _base_release_memory_pools(ioc);
4397         pci_set_drvdata(ioc->pdev, NULL);
4398         kfree(ioc->cpu_msix_table);
4399         if (ioc->is_warpdrive)
4400                 kfree(ioc->reply_post_host_index);
4401         kfree(ioc->pd_handles);
4402         kfree(ioc->blocking_handles);
4403         kfree(ioc->tm_cmds.reply);
4404         kfree(ioc->transport_cmds.reply);
4405         kfree(ioc->scsih_cmds.reply);
4406         kfree(ioc->config_cmds.reply);
4407         kfree(ioc->base_cmds.reply);
4408         kfree(ioc->port_enable_cmds.reply);
4409         kfree(ioc->ctl_cmds.reply);
4410         kfree(ioc->ctl_cmds.sense);
4411         kfree(ioc->pfacts);
4412         ioc->ctl_cmds.reply = NULL;
4413         ioc->base_cmds.reply = NULL;
4414         ioc->tm_cmds.reply = NULL;
4415         ioc->scsih_cmds.reply = NULL;
4416         ioc->transport_cmds.reply = NULL;
4417         ioc->config_cmds.reply = NULL;
4418         ioc->pfacts = NULL;
4419         return r;
4420 }
4421
4422
4423 /**
4424  * mpt2sas_base_detach - remove controller instance
4425  * @ioc: per adapter object
4426  *
4427  * Return nothing.
4428  */
4429 void
4430 mpt2sas_base_detach(struct MPT2SAS_ADAPTER *ioc)
4431 {
4432
4433         dexitprintk(ioc, printk(MPT2SAS_INFO_FMT "%s\n", ioc->name,
4434             __func__));
4435
4436         mpt2sas_base_stop_watchdog(ioc);
4437         mpt2sas_base_free_resources(ioc);
4438         _base_release_memory_pools(ioc);
4439         pci_set_drvdata(ioc->pdev, NULL);
4440         kfree(ioc->cpu_msix_table);
4441         if (ioc->is_warpdrive)
4442                 kfree(ioc->reply_post_host_index);
4443         kfree(ioc->pd_handles);
4444         kfree(ioc->blocking_handles);
4445         kfree(ioc->pfacts);
4446         kfree(ioc->ctl_cmds.reply);
4447         kfree(ioc->ctl_cmds.sense);
4448         kfree(ioc->base_cmds.reply);
4449         kfree(ioc->port_enable_cmds.reply);
4450         kfree(ioc->tm_cmds.reply);
4451         kfree(ioc->transport_cmds.reply);
4452         kfree(ioc->scsih_cmds.reply);
4453         kfree(ioc->config_cmds.reply);
4454 }
4455
4456 /**
4457  * _base_reset_handler - reset callback handler (for base)
4458  * @ioc: per adapter object
4459  * @reset_phase: phase
4460  *
4461  * The handler for doing any required cleanup or initialization.
4462  *
4463  * The reset phase can be MPT2_IOC_PRE_RESET, MPT2_IOC_AFTER_RESET,
4464  * MPT2_IOC_DONE_RESET
4465  *
4466  * Return nothing.
4467  */
4468 static void
4469 _base_reset_handler(struct MPT2SAS_ADAPTER *ioc, int reset_phase)
4470 {
4471         mpt2sas_scsih_reset_handler(ioc, reset_phase);
4472         mpt2sas_ctl_reset_handler(ioc, reset_phase);
4473         switch (reset_phase) {
4474         case MPT2_IOC_PRE_RESET:
4475                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4476                     "MPT2_IOC_PRE_RESET\n", ioc->name, __func__));
4477                 break;
4478         case MPT2_IOC_AFTER_RESET:
4479                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4480                     "MPT2_IOC_AFTER_RESET\n", ioc->name, __func__));
4481                 if (ioc->transport_cmds.status & MPT2_CMD_PENDING) {
4482                         ioc->transport_cmds.status |= MPT2_CMD_RESET;
4483                         mpt2sas_base_free_smid(ioc, ioc->transport_cmds.smid);
4484                         complete(&ioc->transport_cmds.done);
4485                 }
4486                 if (ioc->base_cmds.status & MPT2_CMD_PENDING) {
4487                         ioc->base_cmds.status |= MPT2_CMD_RESET;
4488                         mpt2sas_base_free_smid(ioc, ioc->base_cmds.smid);
4489                         complete(&ioc->base_cmds.done);
4490                 }
4491                 if (ioc->port_enable_cmds.status & MPT2_CMD_PENDING) {
4492                         ioc->port_enable_failed = 1;
4493                         ioc->port_enable_cmds.status |= MPT2_CMD_RESET;
4494                         mpt2sas_base_free_smid(ioc, ioc->port_enable_cmds.smid);
4495                         if (ioc->is_driver_loading) {
4496                                 ioc->start_scan_failed =
4497                                     MPI2_IOCSTATUS_INTERNAL_ERROR;
4498                                 ioc->start_scan = 0;
4499                                 ioc->port_enable_cmds.status =
4500                                                 MPT2_CMD_NOT_USED;
4501                         } else
4502                                 complete(&ioc->port_enable_cmds.done);
4503
4504                 }
4505                 if (ioc->config_cmds.status & MPT2_CMD_PENDING) {
4506                         ioc->config_cmds.status |= MPT2_CMD_RESET;
4507                         mpt2sas_base_free_smid(ioc, ioc->config_cmds.smid);
4508                         ioc->config_cmds.smid = USHRT_MAX;
4509                         complete(&ioc->config_cmds.done);
4510                 }
4511                 break;
4512         case MPT2_IOC_DONE_RESET:
4513                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: "
4514                     "MPT2_IOC_DONE_RESET\n", ioc->name, __func__));
4515                 break;
4516         }
4517 }
4518
4519 /**
4520  * _wait_for_commands_to_complete - reset controller
4521  * @ioc: Pointer to MPT_ADAPTER structure
4522  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4523  *
4524  * This function waiting(3s) for all pending commands to complete
4525  * prior to putting controller in reset.
4526  */
4527 static void
4528 _wait_for_commands_to_complete(struct MPT2SAS_ADAPTER *ioc, int sleep_flag)
4529 {
4530         u32 ioc_state;
4531         unsigned long flags;
4532         u16 i;
4533
4534         ioc->pending_io_count = 0;
4535         if (sleep_flag != CAN_SLEEP)
4536                 return;
4537
4538         ioc_state = mpt2sas_base_get_iocstate(ioc, 0);
4539         if ((ioc_state & MPI2_IOC_STATE_MASK) != MPI2_IOC_STATE_OPERATIONAL)
4540                 return;
4541
4542         /* pending command count */
4543         spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
4544         for (i = 0; i < ioc->scsiio_depth; i++)
4545                 if (ioc->scsi_lookup[i].cb_idx != 0xFF)
4546                         ioc->pending_io_count++;
4547         spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
4548
4549         if (!ioc->pending_io_count)
4550                 return;
4551
4552         /* wait for pending commands to complete */
4553         wait_event_timeout(ioc->reset_wq, ioc->pending_io_count == 0, 10 * HZ);
4554 }
4555
4556 /**
4557  * mpt2sas_base_hard_reset_handler - reset controller
4558  * @ioc: Pointer to MPT_ADAPTER structure
4559  * @sleep_flag: CAN_SLEEP or NO_SLEEP
4560  * @type: FORCE_BIG_HAMMER or SOFT_RESET
4561  *
4562  * Returns 0 for success, non-zero for failure.
4563  */
4564 int
4565 mpt2sas_base_hard_reset_handler(struct MPT2SAS_ADAPTER *ioc, int sleep_flag,
4566     enum reset_type type)
4567 {
4568         int r;
4569         unsigned long flags;
4570
4571         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: enter\n", ioc->name,
4572             __func__));
4573
4574         if (ioc->pci_error_recovery) {
4575                 printk(MPT2SAS_ERR_FMT "%s: pci error recovery reset\n",
4576                     ioc->name, __func__);
4577                 r = 0;
4578                 goto out_unlocked;
4579         }
4580
4581         if (mpt2sas_fwfault_debug)
4582                 mpt2sas_halt_firmware(ioc);
4583
4584         /* TODO - What we really should be doing is pulling
4585          * out all the code associated with NO_SLEEP; its never used.
4586          * That is legacy code from mpt fusion driver, ported over.
4587          * I will leave this BUG_ON here for now till its been resolved.
4588          */
4589         BUG_ON(sleep_flag == NO_SLEEP);
4590
4591         /* wait for an active reset in progress to complete */
4592         if (!mutex_trylock(&ioc->reset_in_progress_mutex)) {
4593                 do {
4594                         ssleep(1);
4595                 } while (ioc->shost_recovery == 1);
4596                 dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4597                     __func__));
4598                 return ioc->ioc_reset_in_progress_status;
4599         }
4600
4601         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4602         ioc->shost_recovery = 1;
4603         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4604
4605         _base_reset_handler(ioc, MPT2_IOC_PRE_RESET);
4606         _wait_for_commands_to_complete(ioc, sleep_flag);
4607         _base_mask_interrupts(ioc);
4608         r = _base_make_ioc_ready(ioc, sleep_flag, type);
4609         if (r)
4610                 goto out;
4611         _base_reset_handler(ioc, MPT2_IOC_AFTER_RESET);
4612
4613         /* If this hard reset is called while port enable is active, then
4614          * there is no reason to call make_ioc_operational
4615          */
4616         if (ioc->is_driver_loading && ioc->port_enable_failed) {
4617                 ioc->remove_host = 1;
4618                 r = -EFAULT;
4619                 goto out;
4620         }
4621         r = _base_make_ioc_operational(ioc, sleep_flag);
4622         if (!r)
4623                 _base_reset_handler(ioc, MPT2_IOC_DONE_RESET);
4624  out:
4625         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: %s\n",
4626             ioc->name, __func__, ((r == 0) ? "SUCCESS" : "FAILED")));
4627
4628         spin_lock_irqsave(&ioc->ioc_reset_in_progress_lock, flags);
4629         ioc->ioc_reset_in_progress_status = r;
4630         ioc->shost_recovery = 0;
4631         spin_unlock_irqrestore(&ioc->ioc_reset_in_progress_lock, flags);
4632         mutex_unlock(&ioc->reset_in_progress_mutex);
4633
4634  out_unlocked:
4635         dtmprintk(ioc, printk(MPT2SAS_INFO_FMT "%s: exit\n", ioc->name,
4636             __func__));
4637         return r;
4638 }