drivers/scsi/mvsas/mv_sas.c

   1 /*
   2  * Marvell 88SE64xx/88SE94xx main function
   3  *
   4  * Copyright 2007 Red Hat, Inc.
   5  * Copyright 2008 Marvell. <kewei@marvell.com>
   6  * Copyright 2009-2011 Marvell. <yuxiangl@marvell.com>
   7  *
   8  * This file is licensed under GPLv2.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; version 2 of the
  13  * License.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  23  * USA
  24 */
  25
  26 #include "mv_sas.h"
  27
  28 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
  29 {
  30         if (task->lldd_task) {
  31                 struct mvs_slot_info *slot;
  32                 slot = task->lldd_task;
  33                 *tag = slot->slot_tag;
  34                 return 1;
  35         }
  36         return 0;
  37 }
  38
  39 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
  40 {
  41         void *bitmap = mvi->tags;
  42         clear_bit(tag, bitmap);
  43 }
  44
  45 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
  46 {
  47         mvs_tag_clear(mvi, tag);
  48 }
  49
  50 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
  51 {
  52         void *bitmap = mvi->tags;
  53         set_bit(tag, bitmap);
  54 }
  55
  56 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
  57 {
  58         unsigned int index, tag;
  59         void *bitmap = mvi->tags;
  60
  61         index = find_first_zero_bit(bitmap, mvi->tags_num);
  62         tag = index;
  63         if (tag >= mvi->tags_num)
  64                 return -SAS_QUEUE_FULL;
  65         mvs_tag_set(mvi, tag);
  66         *tag_out = tag;
  67         return 0;
  68 }
  69
  70 void mvs_tag_init(struct mvs_info *mvi)
  71 {
  72         int i;
  73         for (i = 0; i < mvi->tags_num; ++i)
  74                 mvs_tag_clear(mvi, i);
  75 }
  76
  77 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
  78 {
  79         unsigned long i = 0, j = 0, hi = 0;
  80         struct sas_ha_struct *sha = dev->port->ha;
  81         struct mvs_info *mvi = NULL;
  82         struct asd_sas_phy *phy;
  83
  84         while (sha->sas_port[i]) {
  85                 if (sha->sas_port[i] == dev->port) {
  86                         phy =  container_of(sha->sas_port[i]->phy_list.next,
  87                                 struct asd_sas_phy, port_phy_el);
  88                         j = 0;
  89                         while (sha->sas_phy[j]) {
  90                                 if (sha->sas_phy[j] == phy)
  91                                         break;
  92                                 j++;
  93                         }
  94                         break;
  95                 }
  96                 i++;
  97         }
  98         hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
  99         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
 100
 101         return mvi;
 102
 103 }
 104
 105 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
 106 {
 107         unsigned long i = 0, j = 0, n = 0, num = 0;
 108         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
 109         struct mvs_info *mvi = mvi_dev->mvi_info;
 110         struct sas_ha_struct *sha = dev->port->ha;
 111
 112         while (sha->sas_port[i]) {
 113                 if (sha->sas_port[i] == dev->port) {
 114                         struct asd_sas_phy *phy;
 115                         list_for_each_entry(phy,
 116                                 &sha->sas_port[i]->phy_list, port_phy_el) {
 117                                 j = 0;
 118                                 while (sha->sas_phy[j]) {
 119                                         if (sha->sas_phy[j] == phy)
 120                                                 break;
 121                                         j++;
 122                                 }
 123                                 phyno[n] = (j >= mvi->chip->n_phy) ?
 124                                         (j - mvi->chip->n_phy) : j;
 125                                 num++;
 126                                 n++;
 127                         }
 128                         break;
 129                 }
 130                 i++;
 131         }
 132         return num;
 133 }
 134
 135 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
 136                                                 u8 reg_set)
 137 {
 138         u32 dev_no;
 139         for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
 140                 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
 141                         continue;
 142
 143                 if (mvi->devices[dev_no].taskfileset == reg_set)
 144                         return &mvi->devices[dev_no];
 145         }
 146         return NULL;
 147 }
 148
 149 static inline void mvs_free_reg_set(struct mvs_info *mvi,
 150                                 struct mvs_device *dev)
 151 {
 152         if (!dev) {
 153                 mv_printk("device has been free.\n");
 154                 return;
 155         }
 156         if (dev->taskfileset == MVS_ID_NOT_MAPPED)
 157                 return;
 158         MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
 159 }
 160
 161 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
 162                                 struct mvs_device *dev)
 163 {
 164         if (dev->taskfileset != MVS_ID_NOT_MAPPED)
 165                 return 0;
 166         return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
 167 }
 168
 169 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
 170 {
 171         u32 no;
 172         for_each_phy(phy_mask, phy_mask, no) {
 173                 if (!(phy_mask & 1))
 174                         continue;
 175                 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
 176         }
 177 }
 178
 179 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 180                         void *funcdata)
 181 {
 182         int rc = 0, phy_id = sas_phy->id;
 183         u32 tmp, i = 0, hi;
 184         struct sas_ha_struct *sha = sas_phy->ha;
 185         struct mvs_info *mvi = NULL;
 186
 187         while (sha->sas_phy[i]) {
 188                 if (sha->sas_phy[i] == sas_phy)
 189                         break;
 190                 i++;
 191         }
 192         hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
 193         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
 194
 195         switch (func) {
 196         case PHY_FUNC_SET_LINK_RATE:
 197                 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
 198                 break;
 199
 200         case PHY_FUNC_HARD_RESET:
 201                 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
 202                 if (tmp & PHY_RST_HARD)
 203                         break;
 204                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
 205                 break;
 206
 207         case PHY_FUNC_LINK_RESET:
 208                 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
 209                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
 210                 break;
 211
 212         case PHY_FUNC_DISABLE:
 213                 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
 214                 break;
 215         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 216         default:
 217                 rc = -ENOSYS;
 218         }
 219         msleep(200);
 220         return rc;
 221 }
 222
 223 void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
 224                       u32 off_hi, u64 sas_addr)
 225 {
 226         u32 lo = (u32)sas_addr;
 227         u32 hi = (u32)(sas_addr>>32);
 228
 229         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
 230         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
 231         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
 232         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
 233 }
 234
 235 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
 236 {
 237         struct mvs_phy *phy = &mvi->phy[i];
 238         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 239         struct sas_ha_struct *sas_ha;
 240         if (!phy->phy_attached)
 241                 return;
 242
 243         if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
 244                 && phy->phy_type & PORT_TYPE_SAS) {
 245                 return;
 246         }
 247
 248         sas_ha = mvi->sas;
 249         sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
 250
 251         if (sas_phy->phy) {
 252                 struct sas_phy *sphy = sas_phy->phy;
 253
 254                 sphy->negotiated_linkrate = sas_phy->linkrate;
 255                 sphy->minimum_linkrate = phy->minimum_linkrate;
 256                 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
 257                 sphy->maximum_linkrate = phy->maximum_linkrate;
 258                 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
 259         }
 260
 261         if (phy->phy_type & PORT_TYPE_SAS) {
 262                 struct sas_identify_frame *id;
 263
 264                 id = (struct sas_identify_frame *)phy->frame_rcvd;
 265                 id->dev_type = phy->identify.device_type;
 266                 id->initiator_bits = SAS_PROTOCOL_ALL;
 267                 id->target_bits = phy->identify.target_port_protocols;
 268
 269                 /* direct attached SAS device */
 270                 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
 271                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
 272                         MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
 273                 }
 274         } else if (phy->phy_type & PORT_TYPE_SATA) {
 275                 /*Nothing*/
 276         }
 277         mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
 278
 279         sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
 280
 281         mvi->sas->notify_port_event(sas_phy,
 282                                    PORTE_BYTES_DMAED);
 283 }
 284
 285 void mvs_scan_start(struct Scsi_Host *shost)
 286 {
 287         int i, j;
 288         unsigned short core_nr;
 289         struct mvs_info *mvi;
 290         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 291         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
 292
 293         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 294
 295         for (j = 0; j < core_nr; j++) {
 296                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
 297                 for (i = 0; i < mvi->chip->n_phy; ++i)
 298                         mvs_bytes_dmaed(mvi, i);
 299         }
 300         mvs_prv->scan_finished = 1;
 301 }
 302
 303 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
 304 {
 305         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 306         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
 307
 308         if (mvs_prv->scan_finished == 0)
 309                 return 0;
 310
 311         sas_drain_work(sha);
 312         return 1;
 313 }
 314
 315 static int mvs_task_prep_smp(struct mvs_info *mvi,
 316                              struct mvs_task_exec_info *tei)
 317 {
 318         int elem, rc, i;
 319         struct sas_ha_struct *sha = mvi->sas;
 320         struct sas_task *task = tei->task;
 321         struct mvs_cmd_hdr *hdr = tei->hdr;
 322         struct domain_device *dev = task->dev;
 323         struct asd_sas_port *sas_port = dev->port;
 324         struct sas_phy *sphy = dev->phy;
 325         struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
 326         struct scatterlist *sg_req, *sg_resp;
 327         u32 req_len, resp_len, tag = tei->tag;
 328         void *buf_tmp;
 329         u8 *buf_oaf;
 330         dma_addr_t buf_tmp_dma;
 331         void *buf_prd;
 332         struct mvs_slot_info *slot = &mvi->slot_info[tag];
 333         u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 334
 335         /*
 336          * DMA-map SMP request, response buffers
 337          */
 338         sg_req = &task->smp_task.smp_req;
 339         elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
 340         if (!elem)
 341                 return -ENOMEM;
 342         req_len = sg_dma_len(sg_req);
 343
 344         sg_resp = &task->smp_task.smp_resp;
 345         elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
 346         if (!elem) {
 347                 rc = -ENOMEM;
 348                 goto err_out;
 349         }
 350         resp_len = SB_RFB_MAX;
 351
 352         /* must be in dwords */
 353         if ((req_len & 0x3) || (resp_len & 0x3)) {
 354                 rc = -EINVAL;
 355                 goto err_out_2;
 356         }
 357
 358         /*
 359          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 360          */
 361
 362         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
 363         buf_tmp = slot->buf;
 364         buf_tmp_dma = slot->buf_dma;
 365
 366         hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
 367
 368         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 369         buf_oaf = buf_tmp;
 370         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 371
 372         buf_tmp += MVS_OAF_SZ;
 373         buf_tmp_dma += MVS_OAF_SZ;
 374
 375         /* region 3: PRD table *********************************** */
 376         buf_prd = buf_tmp;
 377         if (tei->n_elem)
 378                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 379         else
 380                 hdr->prd_tbl = 0;
 381
 382         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 383         buf_tmp += i;
 384         buf_tmp_dma += i;
 385
 386         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 387         slot->response = buf_tmp;
 388         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 389         if (mvi->flags & MVF_FLAG_SOC)
 390                 hdr->reserved[0] = 0;
 391
 392         /*
 393          * Fill in TX ring and command slot header
 394          */
 395         slot->tx = mvi->tx_prod;
 396         mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
 397                                         TXQ_MODE_I | tag |
 398                                         (MVS_PHY_ID << TXQ_PHY_SHIFT));
 399
 400         hdr->flags |= flags;
 401         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
 402         hdr->tags = cpu_to_le32(tag);
 403         hdr->data_len = 0;
 404
 405         /* generate open address frame hdr (first 12 bytes) */
 406         /* initiator, SMP, ftype 1h */
 407         buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
 408         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 409         *(u16 *)(buf_oaf + 2) = 0xFFFF;         /* SAS SPEC */
 410         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 411
 412         /* fill in PRD (scatter/gather) table, if any */
 413         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 414
 415         return 0;
 416
 417 err_out_2:
 418         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
 419                      PCI_DMA_FROMDEVICE);
 420 err_out:
 421         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
 422                      PCI_DMA_TODEVICE);
 423         return rc;
 424 }
 425
 426 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
 427 {
 428         struct ata_queued_cmd *qc = task->uldd_task;
 429
 430         if (qc) {
 431                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 432                         qc->tf.command == ATA_CMD_FPDMA_READ) {
 433                         *tag = qc->tag;
 434                         return 1;
 435                 }
 436         }
 437
 438         return 0;
 439 }
 440
 441 static int mvs_task_prep_ata(struct mvs_info *mvi,
 442                              struct mvs_task_exec_info *tei)
 443 {
 444         struct sas_task *task = tei->task;
 445         struct domain_device *dev = task->dev;
 446         struct mvs_device *mvi_dev = dev->lldd_dev;
 447         struct mvs_cmd_hdr *hdr = tei->hdr;
 448         struct asd_sas_port *sas_port = dev->port;
 449         struct mvs_slot_info *slot;
 450         void *buf_prd;
 451         u32 tag = tei->tag, hdr_tag;
 452         u32 flags, del_q;
 453         void *buf_tmp;
 454         u8 *buf_cmd, *buf_oaf;
 455         dma_addr_t buf_tmp_dma;
 456         u32 i, req_len, resp_len;
 457         const u32 max_resp_len = SB_RFB_MAX;
 458
 459         if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
 460                 mv_dprintk("Have not enough regiset for dev %d.\n",
 461                         mvi_dev->device_id);
 462                 return -EBUSY;
 463         }
 464         slot = &mvi->slot_info[tag];
 465         slot->tx = mvi->tx_prod;
 466         del_q = TXQ_MODE_I | tag |
 467                 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
 468                 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
 469                 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
 470         mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
 471
 472         if (task->data_dir == DMA_FROM_DEVICE)
 473                 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
 474         else
 475                 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 476
 477         if (task->ata_task.use_ncq)
 478                 flags |= MCH_FPDMA;
 479         if (dev->sata_dev.class == ATA_DEV_ATAPI) {
 480                 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
 481                         flags |= MCH_ATAPI;
 482         }
 483
 484         hdr->flags = cpu_to_le32(flags);
 485
 486         if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
 487                 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 488         else
 489                 hdr_tag = tag;
 490
 491         hdr->tags = cpu_to_le32(hdr_tag);
 492
 493         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 494
 495         /*
 496          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 497          */
 498
 499         /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
 500         buf_cmd = buf_tmp = slot->buf;
 501         buf_tmp_dma = slot->buf_dma;
 502
 503         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 504
 505         buf_tmp += MVS_ATA_CMD_SZ;
 506         buf_tmp_dma += MVS_ATA_CMD_SZ;
 507
 508         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 509         /* used for STP.  unused for SATA? */
 510         buf_oaf = buf_tmp;
 511         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 512
 513         buf_tmp += MVS_OAF_SZ;
 514         buf_tmp_dma += MVS_OAF_SZ;
 515
 516         /* region 3: PRD table ********************************************* */
 517         buf_prd = buf_tmp;
 518
 519         if (tei->n_elem)
 520                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 521         else
 522                 hdr->prd_tbl = 0;
 523         i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
 524
 525         buf_tmp += i;
 526         buf_tmp_dma += i;
 527
 528         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 529         slot->response = buf_tmp;
 530         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 531         if (mvi->flags & MVF_FLAG_SOC)
 532                 hdr->reserved[0] = 0;
 533
 534         req_len = sizeof(struct host_to_dev_fis);
 535         resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
 536             sizeof(struct mvs_err_info) - i;
 537
 538         /* request, response lengths */
 539         resp_len = min(resp_len, max_resp_len);
 540         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 541
 542         if (likely(!task->ata_task.device_control_reg_update))
 543                 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
 544         /* fill in command FIS and ATAPI CDB */
 545         memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
 546         if (dev->sata_dev.class == ATA_DEV_ATAPI)
 547                 memcpy(buf_cmd + STP_ATAPI_CMD,
 548                         task->ata_task.atapi_packet, 16);
 549
 550         /* generate open address frame hdr (first 12 bytes) */
 551         /* initiator, STP, ftype 1h */
 552         buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
 553         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 554         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 555         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 556
 557         /* fill in PRD (scatter/gather) table, if any */
 558         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 559
 560         if (task->data_dir == DMA_FROM_DEVICE)
 561                 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
 562                                 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
 563
 564         return 0;
 565 }
 566
 567 static int mvs_task_prep_ssp(struct mvs_info *mvi,
 568                              struct mvs_task_exec_info *tei, int is_tmf,
 569                              struct mvs_tmf_task *tmf)
 570 {
 571         struct sas_task *task = tei->task;
 572         struct mvs_cmd_hdr *hdr = tei->hdr;
 573         struct mvs_port *port = tei->port;
 574         struct domain_device *dev = task->dev;
 575         struct mvs_device *mvi_dev = dev->lldd_dev;
 576         struct asd_sas_port *sas_port = dev->port;
 577         struct mvs_slot_info *slot;
 578         void *buf_prd;
 579         struct ssp_frame_hdr *ssp_hdr;
 580         void *buf_tmp;
 581         u8 *buf_cmd, *buf_oaf, fburst = 0;
 582         dma_addr_t buf_tmp_dma;
 583         u32 flags;
 584         u32 resp_len, req_len, i, tag = tei->tag;
 585         const u32 max_resp_len = SB_RFB_MAX;
 586         u32 phy_mask;
 587
 588         slot = &mvi->slot_info[tag];
 589
 590         phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
 591                 sas_port->phy_mask) & TXQ_PHY_MASK;
 592
 593         slot->tx = mvi->tx_prod;
 594         mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
 595                                 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
 596                                 (phy_mask << TXQ_PHY_SHIFT));
 597
 598         flags = MCH_RETRY;
 599         if (task->ssp_task.enable_first_burst) {
 600                 flags |= MCH_FBURST;
 601                 fburst = (1 << 7);
 602         }
 603         if (is_tmf)
 604                 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
 605         else
 606                 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
 607
 608         hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
 609         hdr->tags = cpu_to_le32(tag);
 610         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 611
 612         /*
 613          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 614          */
 615
 616         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
 617         buf_cmd = buf_tmp = slot->buf;
 618         buf_tmp_dma = slot->buf_dma;
 619
 620         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 621
 622         buf_tmp += MVS_SSP_CMD_SZ;
 623         buf_tmp_dma += MVS_SSP_CMD_SZ;
 624
 625         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 626         buf_oaf = buf_tmp;
 627         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 628
 629         buf_tmp += MVS_OAF_SZ;
 630         buf_tmp_dma += MVS_OAF_SZ;
 631
 632         /* region 3: PRD table ********************************************* */
 633         buf_prd = buf_tmp;
 634         if (tei->n_elem)
 635                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 636         else
 637                 hdr->prd_tbl = 0;
 638
 639         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 640         buf_tmp += i;
 641         buf_tmp_dma += i;
 642
 643         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 644         slot->response = buf_tmp;
 645         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 646         if (mvi->flags & MVF_FLAG_SOC)
 647                 hdr->reserved[0] = 0;
 648
 649         resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
 650             sizeof(struct mvs_err_info) - i;
 651         resp_len = min(resp_len, max_resp_len);
 652
 653         req_len = sizeof(struct ssp_frame_hdr) + 28;
 654
 655         /* request, response lengths */
 656         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 657
 658         /* generate open address frame hdr (first 12 bytes) */
 659         /* initiator, SSP, ftype 1h */
 660         buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
 661         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 662         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 663         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 664
 665         /* fill in SSP frame header (Command Table.SSP frame header) */
 666         ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
 667
 668         if (is_tmf)
 669                 ssp_hdr->frame_type = SSP_TASK;
 670         else
 671                 ssp_hdr->frame_type = SSP_COMMAND;
 672
 673         memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
 674                HASHED_SAS_ADDR_SIZE);
 675         memcpy(ssp_hdr->hashed_src_addr,
 676                dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
 677         ssp_hdr->tag = cpu_to_be16(tag);
 678
 679         /* fill in IU for TASK and Command Frame */
 680         buf_cmd += sizeof(*ssp_hdr);
 681         memcpy(buf_cmd, &task->ssp_task.LUN, 8);
 682
 683         if (ssp_hdr->frame_type != SSP_TASK) {
 684                 buf_cmd[9] = fburst | task->ssp_task.task_attr |
 685                                 (task->ssp_task.task_prio << 3);
 686                 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
 687                        task->ssp_task.cmd->cmd_len);
 688         } else{
 689                 buf_cmd[10] = tmf->tmf;
 690                 switch (tmf->tmf) {
 691                 case TMF_ABORT_TASK:
 692                 case TMF_QUERY_TASK:
 693                         buf_cmd[12] =
 694                                 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
 695                         buf_cmd[13] =
 696                                 tmf->tag_of_task_to_be_managed & 0xff;
 697                         break;
 698                 default:
 699                         break;
 700                 }
 701         }
 702         /* fill in PRD (scatter/gather) table, if any */
 703         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 704         return 0;
 705 }
 706
 707 #define DEV_IS_GONE(mvi_dev)    ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
 708 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
 709                                 struct mvs_tmf_task *tmf, int *pass)
 710 {
 711         struct domain_device *dev = task->dev;
 712         struct mvs_device *mvi_dev = dev->lldd_dev;
 713         struct mvs_task_exec_info tei;
 714         struct mvs_slot_info *slot;
 715         u32 tag = 0xdeadbeef, n_elem = 0;
 716         int rc = 0;
 717
 718         if (!dev->port) {
 719                 struct task_status_struct *tsm = &task->task_status;
 720
 721                 tsm->resp = SAS_TASK_UNDELIVERED;
 722                 tsm->stat = SAS_PHY_DOWN;
 723                 /*
 724                  * libsas will use dev->port, should
 725                  * not call task_done for sata
 726                  */
 727                 if (dev->dev_type != SAS_SATA_DEV)
 728                         task->task_done(task);
 729                 return rc;
 730         }
 731
 732         if (DEV_IS_GONE(mvi_dev)) {
 733                 if (mvi_dev)
 734                         mv_dprintk("device %d not ready.\n",
 735                                 mvi_dev->device_id);
 736                 else
 737                         mv_dprintk("device %016llx not ready.\n",
 738                                 SAS_ADDR(dev->sas_addr));
 739
 740                         rc = SAS_PHY_DOWN;
 741                         return rc;
 742         }
 743         tei.port = dev->port->lldd_port;
 744         if (tei.port && !tei.port->port_attached && !tmf) {
 745                 if (sas_protocol_ata(task->task_proto)) {
 746                         struct task_status_struct *ts = &task->task_status;
 747                         mv_dprintk("SATA/STP port %d does not attach"
 748                                         "device.\n", dev->port->id);
 749                         ts->resp = SAS_TASK_COMPLETE;
 750                         ts->stat = SAS_PHY_DOWN;
 751
 752                         task->task_done(task);
 753
 754                 } else {
 755                         struct task_status_struct *ts = &task->task_status;
 756                         mv_dprintk("SAS port %d does not attach"
 757                                 "device.\n", dev->port->id);
 758                         ts->resp = SAS_TASK_UNDELIVERED;
 759                         ts->stat = SAS_PHY_DOWN;
 760                         task->task_done(task);
 761                 }
 762                 return rc;
 763         }
 764
 765         if (!sas_protocol_ata(task->task_proto)) {
 766                 if (task->num_scatter) {
 767                         n_elem = dma_map_sg(mvi->dev,
 768                                             task->scatter,
 769                                             task->num_scatter,
 770                                             task->data_dir);
 771                         if (!n_elem) {
 772                                 rc = -ENOMEM;
 773                                 goto prep_out;
 774                         }
 775                 }
 776         } else {
 777                 n_elem = task->num_scatter;
 778         }
 779
 780         rc = mvs_tag_alloc(mvi, &tag);
 781         if (rc)
 782                 goto err_out;
 783
 784         slot = &mvi->slot_info[tag];
 785
 786         task->lldd_task = NULL;
 787         slot->n_elem = n_elem;
 788         slot->slot_tag = tag;
 789
 790         slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
 791         if (!slot->buf)
 792                 goto err_out_tag;
 793         memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
 794
 795         tei.task = task;
 796         tei.hdr = &mvi->slot[tag];
 797         tei.tag = tag;
 798         tei.n_elem = n_elem;
 799         switch (task->task_proto) {
 800         case SAS_PROTOCOL_SMP:
 801                 rc = mvs_task_prep_smp(mvi, &tei);
 802                 break;
 803         case SAS_PROTOCOL_SSP:
 804                 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
 805                 break;
 806         case SAS_PROTOCOL_SATA:
 807         case SAS_PROTOCOL_STP:
 808         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 809                 rc = mvs_task_prep_ata(mvi, &tei);
 810                 break;
 811         default:
 812                 dev_printk(KERN_ERR, mvi->dev,
 813                         "unknown sas_task proto: 0x%x\n",
 814                         task->task_proto);
 815                 rc = -EINVAL;
 816                 break;
 817         }
 818
 819         if (rc) {
 820                 mv_dprintk("rc is %x\n", rc);
 821                 goto err_out_slot_buf;
 822         }
 823         slot->task = task;
 824         slot->port = tei.port;
 825         task->lldd_task = slot;
 826         list_add_tail(&slot->entry, &tei.port->list);
 827         spin_lock(&task->task_state_lock);
 828         task->task_state_flags |= SAS_TASK_AT_INITIATOR;
 829         spin_unlock(&task->task_state_lock);
 830
 831         mvi_dev->running_req++;
 832         ++(*pass);
 833         mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
 834
 835         return rc;
 836
 837 err_out_slot_buf:
 838         pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 839 err_out_tag:
 840         mvs_tag_free(mvi, tag);
 841 err_out:
 842
 843         dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
 844         if (!sas_protocol_ata(task->task_proto))
 845                 if (n_elem)
 846                         dma_unmap_sg(mvi->dev, task->scatter, n_elem,
 847                                      task->data_dir);
 848 prep_out:
 849         return rc;
 850 }
 851
 852 static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
 853                                 struct completion *completion, int is_tmf,
 854                                 struct mvs_tmf_task *tmf)
 855 {
 856         struct mvs_info *mvi = NULL;
 857         u32 rc = 0;
 858         u32 pass = 0;
 859         unsigned long flags = 0;
 860
 861         mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
 862
 863         spin_lock_irqsave(&mvi->lock, flags);
 864         rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
 865         if (rc)
 866                 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
 867
 868         if (likely(pass))
 869                         MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
 870                                 (MVS_CHIP_SLOT_SZ - 1));
 871         spin_unlock_irqrestore(&mvi->lock, flags);
 872
 873         return rc;
 874 }
 875
 876 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
 877 {
 878         return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
 879 }
 880
 881 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
 882 {
 883         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
 884         mvs_tag_clear(mvi, slot_idx);
 885 }
 886
 887 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
 888                           struct mvs_slot_info *slot, u32 slot_idx)
 889 {
 890         if (!slot)
 891                 return;
 892         if (!slot->task)
 893                 return;
 894         if (!sas_protocol_ata(task->task_proto))
 895                 if (slot->n_elem)
 896                         dma_unmap_sg(mvi->dev, task->scatter,
 897                                      slot->n_elem, task->data_dir);
 898
 899         switch (task->task_proto) {
 900         case SAS_PROTOCOL_SMP:
 901                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
 902                              PCI_DMA_FROMDEVICE);
 903                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
 904                              PCI_DMA_TODEVICE);
 905                 break;
 906
 907         case SAS_PROTOCOL_SATA:
 908         case SAS_PROTOCOL_STP:
 909         case SAS_PROTOCOL_SSP:
 910         default:
 911                 /* do nothing */
 912                 break;
 913         }
 914
 915         if (slot->buf) {
 916                 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 917                 slot->buf = NULL;
 918         }
 919         list_del_init(&slot->entry);
 920         task->lldd_task = NULL;
 921         slot->task = NULL;
 922         slot->port = NULL;
 923         slot->slot_tag = 0xFFFFFFFF;
 924         mvs_slot_free(mvi, slot_idx);
 925 }
 926
 927 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
 928 {
 929         struct mvs_phy *phy = &mvi->phy[phy_no];
 930         struct mvs_port *port = phy->port;
 931         int j, no;
 932
 933         for_each_phy(port->wide_port_phymap, j, no) {
 934                 if (j & 1) {
 935                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 936                                                 PHYR_WIDE_PORT);
 937                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 938                                                 port->wide_port_phymap);
 939                 } else {
 940                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 941                                                 PHYR_WIDE_PORT);
 942                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 943                                                 0);
 944                 }
 945         }
 946 }
 947
 948 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
 949 {
 950         u32 tmp;
 951         struct mvs_phy *phy = &mvi->phy[i];
 952         struct mvs_port *port = phy->port;
 953
 954         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
 955         if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
 956                 if (!port)
 957                         phy->phy_attached = 1;
 958                 return tmp;
 959         }
 960
 961         if (port) {
 962                 if (phy->phy_type & PORT_TYPE_SAS) {
 963                         port->wide_port_phymap &= ~(1U << i);
 964                         if (!port->wide_port_phymap)
 965                                 port->port_attached = 0;
 966                         mvs_update_wideport(mvi, i);
 967                 } else if (phy->phy_type & PORT_TYPE_SATA)
 968                         port->port_attached = 0;
 969                 phy->port = NULL;
 970                 phy->phy_attached = 0;
 971                 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
 972         }
 973         return 0;
 974 }
 975
 976 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
 977 {
 978         u32 *s = (u32 *) buf;
 979
 980         if (!s)
 981                 return NULL;
 982
 983         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
 984         s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 985
 986         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
 987         s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 988
 989         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
 990         s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 991
 992         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
 993         s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 994
 995         if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
 996                 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
 997
 998         return s;
 999 }
1000
1001 static u32 mvs_is_sig_fis_received(u32 irq_status)
1002 {
1003         return irq_status & PHYEV_SIG_FIS;
1004 }
1005
1006 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1007 {
1008         if (phy->timer.function)
1009                 del_timer(&phy->timer);
1010         phy->timer.function = NULL;
1011 }
1012
1013 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1014 {
1015         struct mvs_phy *phy = &mvi->phy[i];
1016         struct sas_identify_frame *id;
1017
1018         id = (struct sas_identify_frame *)phy->frame_rcvd;
1019
1020         if (get_st) {
1021                 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1022                 phy->phy_status = mvs_is_phy_ready(mvi, i);
1023         }
1024
1025         if (phy->phy_status) {
1026                 int oob_done = 0;
1027                 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1028
1029                 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1030
1031                 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1032                 if (phy->phy_type & PORT_TYPE_SATA) {
1033                         phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1034                         if (mvs_is_sig_fis_received(phy->irq_status)) {
1035                                 mvs_sig_remove_timer(phy);
1036                                 phy->phy_attached = 1;
1037                                 phy->att_dev_sas_addr =
1038                                         i + mvi->id * mvi->chip->n_phy;
1039                                 if (oob_done)
1040                                         sas_phy->oob_mode = SATA_OOB_MODE;
1041                                 phy->frame_rcvd_size =
1042                                     sizeof(struct dev_to_host_fis);
1043                                 mvs_get_d2h_reg(mvi, i, id);
1044                         } else {
1045                                 u32 tmp;
1046                                 dev_printk(KERN_DEBUG, mvi->dev,
1047                                         "Phy%d : No sig fis\n", i);
1048                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1049                                 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1050                                                 tmp | PHYEV_SIG_FIS);
1051                                 phy->phy_attached = 0;
1052                                 phy->phy_type &= ~PORT_TYPE_SATA;
1053                                 goto out_done;
1054                         }
1055                 }       else if (phy->phy_type & PORT_TYPE_SAS
1056                         || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1057                         phy->phy_attached = 1;
1058                         phy->identify.device_type =
1059                                 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1060
1061                         if (phy->identify.device_type == SAS_END_DEVICE)
1062                                 phy->identify.target_port_protocols =
1063                                                         SAS_PROTOCOL_SSP;
1064                         else if (phy->identify.device_type != SAS_PHY_UNUSED)
1065                                 phy->identify.target_port_protocols =
1066                                                         SAS_PROTOCOL_SMP;
1067                         if (oob_done)
1068                                 sas_phy->oob_mode = SAS_OOB_MODE;
1069                         phy->frame_rcvd_size =
1070                             sizeof(struct sas_identify_frame);
1071                 }
1072                 memcpy(sas_phy->attached_sas_addr,
1073                         &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1074
1075                 if (MVS_CHIP_DISP->phy_work_around)
1076                         MVS_CHIP_DISP->phy_work_around(mvi, i);
1077         }
1078         mv_dprintk("phy %d attach dev info is %x\n",
1079                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1080         mv_dprintk("phy %d attach sas addr is %llx\n",
1081                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1082 out_done:
1083         if (get_st)
1084                 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1085 }
1086
1087 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1088 {
1089         struct sas_ha_struct *sas_ha = sas_phy->ha;
1090         struct mvs_info *mvi = NULL; int i = 0, hi;
1091         struct mvs_phy *phy = sas_phy->lldd_phy;
1092         struct asd_sas_port *sas_port = sas_phy->port;
1093         struct mvs_port *port;
1094         unsigned long flags = 0;
1095         if (!sas_port)
1096                 return;
1097
1098         while (sas_ha->sas_phy[i]) {
1099                 if (sas_ha->sas_phy[i] == sas_phy)
1100                         break;
1101                 i++;
1102         }
1103         hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1104         mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1105         if (i >= mvi->chip->n_phy)
1106                 port = &mvi->port[i - mvi->chip->n_phy];
1107         else
1108                 port = &mvi->port[i];
1109         if (lock)
1110                 spin_lock_irqsave(&mvi->lock, flags);
1111         port->port_attached = 1;
1112         phy->port = port;
1113         sas_port->lldd_port = port;
1114         if (phy->phy_type & PORT_TYPE_SAS) {
1115                 port->wide_port_phymap = sas_port->phy_mask;
1116                 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1117                 mvs_update_wideport(mvi, sas_phy->id);
1118
1119                 /* direct attached SAS device */
1120                 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1121                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1122                         MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1123                 }
1124         }
1125         if (lock)
1126                 spin_unlock_irqrestore(&mvi->lock, flags);
1127 }
1128
1129 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1130 {
1131         struct domain_device *dev;
1132         struct mvs_phy *phy = sas_phy->lldd_phy;
1133         struct mvs_info *mvi = phy->mvi;
1134         struct asd_sas_port *port = sas_phy->port;
1135         int phy_no = 0;
1136
1137         while (phy != &mvi->phy[phy_no]) {
1138                 phy_no++;
1139                 if (phy_no >= MVS_MAX_PHYS)
1140                         return;
1141         }
1142         list_for_each_entry(dev, &port->dev_list, dev_list_node)
1143                 mvs_do_release_task(phy->mvi, phy_no, dev);
1144
1145 }
1146
1147
1148 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1149 {
1150         mvs_port_notify_formed(sas_phy, 1);
1151 }
1152
1153 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1154 {
1155         mvs_port_notify_deformed(sas_phy, 1);
1156 }
1157
1158 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1159 {
1160         u32 dev;
1161         for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1162                 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1163                         mvi->devices[dev].device_id = dev;
1164                         return &mvi->devices[dev];
1165                 }
1166         }
1167
1168         if (dev == MVS_MAX_DEVICES)
1169                 mv_printk("max support %d devices, ignore ..\n",
1170                         MVS_MAX_DEVICES);
1171
1172         return NULL;
1173 }
1174
1175 void mvs_free_dev(struct mvs_device *mvi_dev)
1176 {
1177         u32 id = mvi_dev->device_id;
1178         memset(mvi_dev, 0, sizeof(*mvi_dev));
1179         mvi_dev->device_id = id;
1180         mvi_dev->dev_type = SAS_PHY_UNUSED;
1181         mvi_dev->dev_status = MVS_DEV_NORMAL;
1182         mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1183 }
1184
1185 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1186 {
1187         unsigned long flags = 0;
1188         int res = 0;
1189         struct mvs_info *mvi = NULL;
1190         struct domain_device *parent_dev = dev->parent;
1191         struct mvs_device *mvi_device;
1192
1193         mvi = mvs_find_dev_mvi(dev);
1194
1195         if (lock)
1196                 spin_lock_irqsave(&mvi->lock, flags);
1197
1198         mvi_device = mvs_alloc_dev(mvi);
1199         if (!mvi_device) {
1200                 res = -1;
1201                 goto found_out;
1202         }
1203         dev->lldd_dev = mvi_device;
1204         mvi_device->dev_status = MVS_DEV_NORMAL;
1205         mvi_device->dev_type = dev->dev_type;
1206         mvi_device->mvi_info = mvi;
1207         mvi_device->sas_device = dev;
1208         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1209                 int phy_id;
1210                 u8 phy_num = parent_dev->ex_dev.num_phys;
1211                 struct ex_phy *phy;
1212                 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1213                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
1214                         if (SAS_ADDR(phy->attached_sas_addr) ==
1215                                 SAS_ADDR(dev->sas_addr)) {
1216                                 mvi_device->attached_phy = phy_id;
1217                                 break;
1218                         }
1219                 }
1220
1221                 if (phy_id == phy_num) {
1222                         mv_printk("Error: no attached dev:%016llx"
1223                                 "at ex:%016llx.\n",
1224                                 SAS_ADDR(dev->sas_addr),
1225                                 SAS_ADDR(parent_dev->sas_addr));
1226                         res = -1;
1227                 }
1228         }
1229
1230 found_out:
1231         if (lock)
1232                 spin_unlock_irqrestore(&mvi->lock, flags);
1233         return res;
1234 }
1235
1236 int mvs_dev_found(struct domain_device *dev)
1237 {
1238         return mvs_dev_found_notify(dev, 1);
1239 }
1240
1241 void mvs_dev_gone_notify(struct domain_device *dev)
1242 {
1243         unsigned long flags = 0;
1244         struct mvs_device *mvi_dev = dev->lldd_dev;
1245         struct mvs_info *mvi;
1246
1247         if (!mvi_dev) {
1248                 mv_dprintk("found dev has gone.\n");
1249                 return;
1250         }
1251
1252         mvi = mvi_dev->mvi_info;
1253
1254         spin_lock_irqsave(&mvi->lock, flags);
1255
1256         mv_dprintk("found dev[%d:%x] is gone.\n",
1257                 mvi_dev->device_id, mvi_dev->dev_type);
1258         mvs_release_task(mvi, dev);
1259         mvs_free_reg_set(mvi, mvi_dev);
1260         mvs_free_dev(mvi_dev);
1261
1262         dev->lldd_dev = NULL;
1263         mvi_dev->sas_device = NULL;
1264
1265         spin_unlock_irqrestore(&mvi->lock, flags);
1266 }
1267
1268
1269 void mvs_dev_gone(struct domain_device *dev)
1270 {
1271         mvs_dev_gone_notify(dev);
1272 }
1273
1274 static void mvs_task_done(struct sas_task *task)
1275 {
1276         if (!del_timer(&task->slow_task->timer))
1277                 return;
1278         complete(&task->slow_task->completion);
1279 }
1280
1281 static void mvs_tmf_timedout(unsigned long data)
1282 {
1283         struct sas_task *task = (struct sas_task *)data;
1284
1285         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1286         complete(&task->slow_task->completion);
1287 }
1288
1289 #define MVS_TASK_TIMEOUT 20
1290 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1291                         void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1292 {
1293         int res, retry;
1294         struct sas_task *task = NULL;
1295
1296         for (retry = 0; retry < 3; retry++) {
1297                 task = sas_alloc_slow_task(GFP_KERNEL);
1298                 if (!task)
1299                         return -ENOMEM;
1300
1301                 task->dev = dev;
1302                 task->task_proto = dev->tproto;
1303
1304                 memcpy(&task->ssp_task, parameter, para_len);
1305                 task->task_done = mvs_task_done;
1306
1307                 task->slow_task->timer.data = (unsigned long) task;
1308                 task->slow_task->timer.function = mvs_tmf_timedout;
1309                 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1310                 add_timer(&task->slow_task->timer);
1311
1312                 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1313
1314                 if (res) {
1315                         del_timer(&task->slow_task->timer);
1316                         mv_printk("executing internal task failed:%d\n", res);
1317                         goto ex_err;
1318                 }
1319
1320                 wait_for_completion(&task->slow_task->completion);
1321                 res = TMF_RESP_FUNC_FAILED;
1322                 /* Even TMF timed out, return direct. */
1323                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1324                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1325                                 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1326                                 goto ex_err;
1327                         }
1328                 }
1329
1330                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1331                     task->task_status.stat == SAM_STAT_GOOD) {
1332                         res = TMF_RESP_FUNC_COMPLETE;
1333                         break;
1334                 }
1335
1336                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1337                       task->task_status.stat == SAS_DATA_UNDERRUN) {
1338                         /* no error, but return the number of bytes of
1339                          * underrun */
1340                         res = task->task_status.residual;
1341                         break;
1342                 }
1343
1344                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1345                       task->task_status.stat == SAS_DATA_OVERRUN) {
1346                         mv_dprintk("blocked task error.\n");
1347                         res = -EMSGSIZE;
1348                         break;
1349                 } else {
1350                         mv_dprintk(" task to dev %016llx response: 0x%x "
1351                                     "status 0x%x\n",
1352                                     SAS_ADDR(dev->sas_addr),
1353                                     task->task_status.resp,
1354                                     task->task_status.stat);
1355                         sas_free_task(task);
1356                         task = NULL;
1357
1358                 }
1359         }
1360 ex_err:
1361         BUG_ON(retry == 3 && task != NULL);
1362         sas_free_task(task);
1363         return res;
1364 }
1365
1366 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1367                                 u8 *lun, struct mvs_tmf_task *tmf)
1368 {
1369         struct sas_ssp_task ssp_task;
1370         if (!(dev->tproto & SAS_PROTOCOL_SSP))
1371                 return TMF_RESP_FUNC_ESUPP;
1372
1373         memcpy(ssp_task.LUN, lun, 8);
1374
1375         return mvs_exec_internal_tmf_task(dev, &ssp_task,
1376                                 sizeof(ssp_task), tmf);
1377 }
1378
1379
1380 /*  Standard mandates link reset for ATA  (type 0)
1381     and hard reset for SSP (type 1) , only for RECOVERY */
1382 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1383 {
1384         int rc;
1385         struct sas_phy *phy = sas_get_local_phy(dev);
1386         int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1387                         (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1388         rc = sas_phy_reset(phy, reset_type);
1389         sas_put_local_phy(phy);
1390         msleep(2000);
1391         return rc;
1392 }
1393
1394 /* mandatory SAM-3 */
1395 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1396 {
1397         unsigned long flags;
1398         int rc = TMF_RESP_FUNC_FAILED;
1399         struct mvs_tmf_task tmf_task;
1400         struct mvs_device * mvi_dev = dev->lldd_dev;
1401         struct mvs_info *mvi = mvi_dev->mvi_info;
1402
1403         tmf_task.tmf = TMF_LU_RESET;
1404         mvi_dev->dev_status = MVS_DEV_EH;
1405         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1406         if (rc == TMF_RESP_FUNC_COMPLETE) {
1407                 spin_lock_irqsave(&mvi->lock, flags);
1408                 mvs_release_task(mvi, dev);
1409                 spin_unlock_irqrestore(&mvi->lock, flags);
1410         }
1411         /* If failed, fall-through I_T_Nexus reset */
1412         mv_printk("%s for device[%x]:rc= %d\n", __func__,
1413                         mvi_dev->device_id, rc);
1414         return rc;
1415 }
1416
1417 int mvs_I_T_nexus_reset(struct domain_device *dev)
1418 {
1419         unsigned long flags;
1420         int rc = TMF_RESP_FUNC_FAILED;
1421     struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1422         struct mvs_info *mvi = mvi_dev->mvi_info;
1423
1424         if (mvi_dev->dev_status != MVS_DEV_EH)
1425                 return TMF_RESP_FUNC_COMPLETE;
1426         else
1427                 mvi_dev->dev_status = MVS_DEV_NORMAL;
1428         rc = mvs_debug_I_T_nexus_reset(dev);
1429         mv_printk("%s for device[%x]:rc= %d\n",
1430                 __func__, mvi_dev->device_id, rc);
1431
1432         spin_lock_irqsave(&mvi->lock, flags);
1433         mvs_release_task(mvi, dev);
1434         spin_unlock_irqrestore(&mvi->lock, flags);
1435
1436         return rc;
1437 }
1438 /* optional SAM-3 */
1439 int mvs_query_task(struct sas_task *task)
1440 {
1441         u32 tag;
1442         struct scsi_lun lun;
1443         struct mvs_tmf_task tmf_task;
1444         int rc = TMF_RESP_FUNC_FAILED;
1445
1446         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1447                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1448                 struct domain_device *dev = task->dev;
1449                 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1450                 struct mvs_info *mvi = mvi_dev->mvi_info;
1451
1452                 int_to_scsilun(cmnd->device->lun, &lun);
1453                 rc = mvs_find_tag(mvi, task, &tag);
1454                 if (rc == 0) {
1455                         rc = TMF_RESP_FUNC_FAILED;
1456                         return rc;
1457                 }
1458
1459                 tmf_task.tmf = TMF_QUERY_TASK;
1460                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1461
1462                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1463                 switch (rc) {
1464                 /* The task is still in Lun, release it then */
1465                 case TMF_RESP_FUNC_SUCC:
1466                 /* The task is not in Lun or failed, reset the phy */
1467                 case TMF_RESP_FUNC_FAILED:
1468                 case TMF_RESP_FUNC_COMPLETE:
1469                         break;
1470                 }
1471         }
1472         mv_printk("%s:rc= %d\n", __func__, rc);
1473         return rc;
1474 }
1475
1476 /*  mandatory SAM-3, still need free task/slot info */
1477 int mvs_abort_task(struct sas_task *task)
1478 {
1479         struct scsi_lun lun;
1480         struct mvs_tmf_task tmf_task;
1481         struct domain_device *dev = task->dev;
1482         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1483         struct mvs_info *mvi;
1484         int rc = TMF_RESP_FUNC_FAILED;
1485         unsigned long flags;
1486         u32 tag;
1487
1488         if (!mvi_dev) {
1489                 mv_printk("Device has removed\n");
1490                 return TMF_RESP_FUNC_FAILED;
1491         }
1492
1493         mvi = mvi_dev->mvi_info;
1494
1495         spin_lock_irqsave(&task->task_state_lock, flags);
1496         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1497                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1498                 rc = TMF_RESP_FUNC_COMPLETE;
1499                 goto out;
1500         }
1501         spin_unlock_irqrestore(&task->task_state_lock, flags);
1502         mvi_dev->dev_status = MVS_DEV_EH;
1503         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1504                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1505
1506                 int_to_scsilun(cmnd->device->lun, &lun);
1507                 rc = mvs_find_tag(mvi, task, &tag);
1508                 if (rc == 0) {
1509                         mv_printk("No such tag in %s\n", __func__);
1510                         rc = TMF_RESP_FUNC_FAILED;
1511                         return rc;
1512                 }
1513
1514                 tmf_task.tmf = TMF_ABORT_TASK;
1515                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1516
1517                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1518
1519                 /* if successful, clear the task and callback forwards.*/
1520                 if (rc == TMF_RESP_FUNC_COMPLETE) {
1521                         u32 slot_no;
1522                         struct mvs_slot_info *slot;
1523
1524                         if (task->lldd_task) {
1525                                 slot = task->lldd_task;
1526                                 slot_no = (u32) (slot - mvi->slot_info);
1527                                 spin_lock_irqsave(&mvi->lock, flags);
1528                                 mvs_slot_complete(mvi, slot_no, 1);
1529                                 spin_unlock_irqrestore(&mvi->lock, flags);
1530                         }
1531                 }
1532
1533         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1534                 task->task_proto & SAS_PROTOCOL_STP) {
1535                 if (SAS_SATA_DEV == dev->dev_type) {
1536                         struct mvs_slot_info *slot = task->lldd_task;
1537                         u32 slot_idx = (u32)(slot - mvi->slot_info);
1538                         mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1539                                    "slot=%p slot_idx=x%x\n",
1540                                    mvi, task, slot, slot_idx);
1541                         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1542                         mvs_slot_task_free(mvi, task, slot, slot_idx);
1543                         rc = TMF_RESP_FUNC_COMPLETE;
1544                         goto out;
1545                 }
1546
1547         }
1548 out:
1549         if (rc != TMF_RESP_FUNC_COMPLETE)
1550                 mv_printk("%s:rc= %d\n", __func__, rc);
1551         return rc;
1552 }
1553
1554 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1555 {
1556         int rc = TMF_RESP_FUNC_FAILED;
1557         struct mvs_tmf_task tmf_task;
1558
1559         tmf_task.tmf = TMF_ABORT_TASK_SET;
1560         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1561
1562         return rc;
1563 }
1564
1565 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1566 {
1567         int rc = TMF_RESP_FUNC_FAILED;
1568         struct mvs_tmf_task tmf_task;
1569
1570         tmf_task.tmf = TMF_CLEAR_ACA;
1571         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1572
1573         return rc;
1574 }
1575
1576 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1577 {
1578         int rc = TMF_RESP_FUNC_FAILED;
1579         struct mvs_tmf_task tmf_task;
1580
1581         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1582         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1583
1584         return rc;
1585 }
1586
1587 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1588                         u32 slot_idx, int err)
1589 {
1590         struct mvs_device *mvi_dev = task->dev->lldd_dev;
1591         struct task_status_struct *tstat = &task->task_status;
1592         struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1593         int stat = SAM_STAT_GOOD;
1594
1595
1596         resp->frame_len = sizeof(struct dev_to_host_fis);
1597         memcpy(&resp->ending_fis[0],
1598                SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1599                sizeof(struct dev_to_host_fis));
1600         tstat->buf_valid_size = sizeof(*resp);
1601         if (unlikely(err)) {
1602                 if (unlikely(err & CMD_ISS_STPD))
1603                         stat = SAS_OPEN_REJECT;
1604                 else
1605                         stat = SAS_PROTO_RESPONSE;
1606        }
1607
1608         return stat;
1609 }
1610
1611 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1612                 int key, int asc, int ascq)
1613 {
1614         memset(buffer, 0, len);
1615
1616         if (d_sense) {
1617                 /* Descriptor format */
1618                 if (len < 4) {
1619                         mv_printk("Length %d of sense buffer too small to "
1620                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1621                 }
1622
1623                 buffer[0] = 0x72;               /* Response Code        */
1624                 if (len > 1)
1625                         buffer[1] = key;        /* Sense Key */
1626                 if (len > 2)
1627                         buffer[2] = asc;        /* ASC  */
1628                 if (len > 3)
1629                         buffer[3] = ascq;       /* ASCQ */
1630         } else {
1631                 if (len < 14) {
1632                         mv_printk("Length %d of sense buffer too small to "
1633                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1634                 }
1635
1636                 buffer[0] = 0x70;               /* Response Code        */
1637                 if (len > 2)
1638                         buffer[2] = key;        /* Sense Key */
1639                 if (len > 7)
1640                         buffer[7] = 0x0a;       /* Additional Sense Length */
1641                 if (len > 12)
1642                         buffer[12] = asc;       /* ASC */
1643                 if (len > 13)
1644                         buffer[13] = ascq; /* ASCQ */
1645         }
1646
1647         return;
1648 }
1649
1650 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1651                                 u8 key, u8 asc, u8 asc_q)
1652 {
1653         iu->datapres = 2;
1654         iu->response_data_len = 0;
1655         iu->sense_data_len = 17;
1656         iu->status = 02;
1657         mvs_set_sense(iu->sense_data, 17, 0,
1658                         key, asc, asc_q);
1659 }
1660
1661 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1662                          u32 slot_idx)
1663 {
1664         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1665         int stat;
1666         u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1667         u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1668         u32 tfs = 0;
1669         enum mvs_port_type type = PORT_TYPE_SAS;
1670
1671         if (err_dw0 & CMD_ISS_STPD)
1672                 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1673
1674         MVS_CHIP_DISP->command_active(mvi, slot_idx);
1675
1676         stat = SAM_STAT_CHECK_CONDITION;
1677         switch (task->task_proto) {
1678         case SAS_PROTOCOL_SSP:
1679         {
1680                 stat = SAS_ABORTED_TASK;
1681                 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1682                         struct ssp_response_iu *iu = slot->response +
1683                                 sizeof(struct mvs_err_info);
1684                         mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1685                         sas_ssp_task_response(mvi->dev, task, iu);
1686                         stat = SAM_STAT_CHECK_CONDITION;
1687                 }
1688                 if (err_dw1 & bit(31))
1689                         mv_printk("reuse same slot, retry command.\n");
1690                 break;
1691         }
1692         case SAS_PROTOCOL_SMP:
1693                 stat = SAM_STAT_CHECK_CONDITION;
1694                 break;
1695
1696         case SAS_PROTOCOL_SATA:
1697         case SAS_PROTOCOL_STP:
1698         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1699         {
1700                 task->ata_task.use_ncq = 0;
1701                 stat = SAS_PROTO_RESPONSE;
1702                 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1703         }
1704                 break;
1705         default:
1706                 break;
1707         }
1708
1709         return stat;
1710 }
1711
1712 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1713 {
1714         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1715         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1716         struct sas_task *task = slot->task;
1717         struct mvs_device *mvi_dev = NULL;
1718         struct task_status_struct *tstat;
1719         struct domain_device *dev;
1720         u32 aborted;
1721
1722         void *to;
1723         enum exec_status sts;
1724
1725         if (unlikely(!task || !task->lldd_task || !task->dev))
1726                 return -1;
1727
1728         tstat = &task->task_status;
1729         dev = task->dev;
1730         mvi_dev = dev->lldd_dev;
1731
1732         spin_lock(&task->task_state_lock);
1733         task->task_state_flags &=
1734                 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1735         task->task_state_flags |= SAS_TASK_STATE_DONE;
1736         /* race condition*/
1737         aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1738         spin_unlock(&task->task_state_lock);
1739
1740         memset(tstat, 0, sizeof(*tstat));
1741         tstat->resp = SAS_TASK_COMPLETE;
1742
1743         if (unlikely(aborted)) {
1744                 tstat->stat = SAS_ABORTED_TASK;
1745                 if (mvi_dev && mvi_dev->running_req)
1746                         mvi_dev->running_req--;
1747                 if (sas_protocol_ata(task->task_proto))
1748                         mvs_free_reg_set(mvi, mvi_dev);
1749
1750                 mvs_slot_task_free(mvi, task, slot, slot_idx);
1751                 return -1;
1752         }
1753
1754         /* when no device attaching, go ahead and complete by error handling*/
1755         if (unlikely(!mvi_dev || flags)) {
1756                 if (!mvi_dev)
1757                         mv_dprintk("port has not device.\n");
1758                 tstat->stat = SAS_PHY_DOWN;
1759                 goto out;
1760         }
1761
1762         /*
1763          * error info record present; slot->response is 32 bit aligned but may
1764          * not be 64 bit aligned, so check for zero in two 32 bit reads
1765          */
1766         if (unlikely((rx_desc & RXQ_ERR)
1767                      && (*((u32 *)slot->response)
1768                          || *(((u32 *)slot->response) + 1)))) {
1769                 mv_dprintk("port %d slot %d rx_desc %X has error info"
1770                         "%016llX.\n", slot->port->sas_port.id, slot_idx,
1771                          rx_desc, get_unaligned_le64(slot->response));
1772                 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1773                 tstat->resp = SAS_TASK_COMPLETE;
1774                 goto out;
1775         }
1776
1777         switch (task->task_proto) {
1778         case SAS_PROTOCOL_SSP:
1779                 /* hw says status == 0, datapres == 0 */
1780                 if (rx_desc & RXQ_GOOD) {
1781                         tstat->stat = SAM_STAT_GOOD;
1782                         tstat->resp = SAS_TASK_COMPLETE;
1783                 }
1784                 /* response frame present */
1785                 else if (rx_desc & RXQ_RSP) {
1786                         struct ssp_response_iu *iu = slot->response +
1787                                                 sizeof(struct mvs_err_info);
1788                         sas_ssp_task_response(mvi->dev, task, iu);
1789                 } else
1790                         tstat->stat = SAM_STAT_CHECK_CONDITION;
1791                 break;
1792
1793         case SAS_PROTOCOL_SMP: {
1794                         struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1795                         tstat->stat = SAM_STAT_GOOD;
1796                         to = kmap_atomic(sg_page(sg_resp));
1797                         memcpy(to + sg_resp->offset,
1798                                 slot->response + sizeof(struct mvs_err_info),
1799                                 sg_dma_len(sg_resp));
1800                         kunmap_atomic(to);
1801                         break;
1802                 }
1803
1804         case SAS_PROTOCOL_SATA:
1805         case SAS_PROTOCOL_STP:
1806         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1807                         tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1808                         break;
1809                 }
1810
1811         default:
1812                 tstat->stat = SAM_STAT_CHECK_CONDITION;
1813                 break;
1814         }
1815         if (!slot->port->port_attached) {
1816                 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1817                 tstat->stat = SAS_PHY_DOWN;
1818         }
1819
1820
1821 out:
1822         if (mvi_dev && mvi_dev->running_req) {
1823                 mvi_dev->running_req--;
1824                 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1825                         mvs_free_reg_set(mvi, mvi_dev);
1826         }
1827         mvs_slot_task_free(mvi, task, slot, slot_idx);
1828         sts = tstat->stat;
1829
1830         spin_unlock(&mvi->lock);
1831         if (task->task_done)
1832                 task->task_done(task);
1833
1834         spin_lock(&mvi->lock);
1835
1836         return sts;
1837 }
1838
1839 void mvs_do_release_task(struct mvs_info *mvi,
1840                 int phy_no, struct domain_device *dev)
1841 {
1842         u32 slot_idx;
1843         struct mvs_phy *phy;
1844         struct mvs_port *port;
1845         struct mvs_slot_info *slot, *slot2;
1846
1847         phy = &mvi->phy[phy_no];
1848         port = phy->port;
1849         if (!port)
1850                 return;
1851         /* clean cmpl queue in case request is already finished */
1852         mvs_int_rx(mvi, false);
1853
1854
1855
1856         list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1857                 struct sas_task *task;
1858                 slot_idx = (u32) (slot - mvi->slot_info);
1859                 task = slot->task;
1860
1861                 if (dev && task->dev != dev)
1862                         continue;
1863
1864                 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1865                         slot_idx, slot->slot_tag, task);
1866                 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1867
1868                 mvs_slot_complete(mvi, slot_idx, 1);
1869         }
1870 }
1871
1872 void mvs_release_task(struct mvs_info *mvi,
1873                       struct domain_device *dev)
1874 {
1875         int i, phyno[WIDE_PORT_MAX_PHY], num;
1876         num = mvs_find_dev_phyno(dev, phyno);
1877         for (i = 0; i < num; i++)
1878                 mvs_do_release_task(mvi, phyno[i], dev);
1879 }
1880
1881 static void mvs_phy_disconnected(struct mvs_phy *phy)
1882 {
1883         phy->phy_attached = 0;
1884         phy->att_dev_info = 0;
1885         phy->att_dev_sas_addr = 0;
1886 }
1887
1888 static void mvs_work_queue(struct work_struct *work)
1889 {
1890         struct delayed_work *dw = container_of(work, struct delayed_work, work);
1891         struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1892         struct mvs_info *mvi = mwq->mvi;
1893         unsigned long flags;
1894         u32 phy_no = (unsigned long) mwq->data;
1895         struct sas_ha_struct *sas_ha = mvi->sas;
1896         struct mvs_phy *phy = &mvi->phy[phy_no];
1897         struct asd_sas_phy *sas_phy = &phy->sas_phy;
1898
1899         spin_lock_irqsave(&mvi->lock, flags);
1900         if (mwq->handler & PHY_PLUG_EVENT) {
1901
1902                 if (phy->phy_event & PHY_PLUG_OUT) {
1903                         u32 tmp;
1904                         struct sas_identify_frame *id;
1905                         id = (struct sas_identify_frame *)phy->frame_rcvd;
1906                         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1907                         phy->phy_event &= ~PHY_PLUG_OUT;
1908                         if (!(tmp & PHY_READY_MASK)) {
1909                                 sas_phy_disconnected(sas_phy);
1910                                 mvs_phy_disconnected(phy);
1911                                 sas_ha->notify_phy_event(sas_phy,
1912                                         PHYE_LOSS_OF_SIGNAL);
1913                                 mv_dprintk("phy%d Removed Device\n", phy_no);
1914                         } else {
1915                                 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1916                                 mvs_update_phyinfo(mvi, phy_no, 1);
1917                                 mvs_bytes_dmaed(mvi, phy_no);
1918                                 mvs_port_notify_formed(sas_phy, 0);
1919                                 mv_dprintk("phy%d Attached Device\n", phy_no);
1920                         }
1921                 }
1922         } else if (mwq->handler & EXP_BRCT_CHG) {
1923                 phy->phy_event &= ~EXP_BRCT_CHG;
1924                 sas_ha->notify_port_event(sas_phy,
1925                                 PORTE_BROADCAST_RCVD);
1926                 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1927         }
1928         list_del(&mwq->entry);
1929         spin_unlock_irqrestore(&mvi->lock, flags);
1930         kfree(mwq);
1931 }
1932
1933 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1934 {
1935         struct mvs_wq *mwq;
1936         int ret = 0;
1937
1938         mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1939         if (mwq) {
1940                 mwq->mvi = mvi;
1941                 mwq->data = data;
1942                 mwq->handler = handler;
1943                 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1944                 list_add_tail(&mwq->entry, &mvi->wq_list);
1945                 schedule_delayed_work(&mwq->work_q, HZ * 2);
1946         } else
1947                 ret = -ENOMEM;
1948
1949         return ret;
1950 }
1951
1952 static void mvs_sig_time_out(unsigned long tphy)
1953 {
1954         struct mvs_phy *phy = (struct mvs_phy *)tphy;
1955         struct mvs_info *mvi = phy->mvi;
1956         u8 phy_no;
1957
1958         for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1959                 if (&mvi->phy[phy_no] == phy) {
1960                         mv_dprintk("Get signature time out, reset phy %d\n",
1961                                 phy_no+mvi->id*mvi->chip->n_phy);
1962                         MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1963                 }
1964         }
1965 }
1966
1967 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1968 {
1969         u32 tmp;
1970         struct mvs_phy *phy = &mvi->phy[phy_no];
1971
1972         phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1973         MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1974         mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1975                 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1976         mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1977                 phy->irq_status);
1978
1979         /*
1980         * events is port event now ,
1981         * we need check the interrupt status which belongs to per port.
1982         */
1983
1984         if (phy->irq_status & PHYEV_DCDR_ERR) {
1985                 mv_dprintk("phy %d STP decoding error.\n",
1986                 phy_no + mvi->id*mvi->chip->n_phy);
1987         }
1988
1989         if (phy->irq_status & PHYEV_POOF) {
1990                 mdelay(500);
1991                 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1992                         int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1993                         int ready;
1994                         mvs_do_release_task(mvi, phy_no, NULL);
1995                         phy->phy_event |= PHY_PLUG_OUT;
1996                         MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1997                         mvs_handle_event(mvi,
1998                                 (void *)(unsigned long)phy_no,
1999                                 PHY_PLUG_EVENT);
2000                         ready = mvs_is_phy_ready(mvi, phy_no);
2001                         if (ready || dev_sata) {
2002                                 if (MVS_CHIP_DISP->stp_reset)
2003                                         MVS_CHIP_DISP->stp_reset(mvi,
2004                                                         phy_no);
2005                                 else
2006                                         MVS_CHIP_DISP->phy_reset(mvi,
2007                                                         phy_no, MVS_SOFT_RESET);
2008                                 return;
2009                         }
2010                 }
2011         }
2012
2013         if (phy->irq_status & PHYEV_COMWAKE) {
2014                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2015                 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2016                                         tmp | PHYEV_SIG_FIS);
2017                 if (phy->timer.function == NULL) {
2018                         phy->timer.data = (unsigned long)phy;
2019                         phy->timer.function = mvs_sig_time_out;
2020                         phy->timer.expires = jiffies + 5*HZ;
2021                         add_timer(&phy->timer);
2022                 }
2023         }
2024         if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2025                 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2026                 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2027                 if (phy->phy_status) {
2028                         mdelay(10);
2029                         MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2030                         if (phy->phy_type & PORT_TYPE_SATA) {
2031                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2032                                                 mvi, phy_no);
2033                                 tmp &= ~PHYEV_SIG_FIS;
2034                                 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2035                                                         phy_no, tmp);
2036                         }
2037                         mvs_update_phyinfo(mvi, phy_no, 0);
2038                         if (phy->phy_type & PORT_TYPE_SAS) {
2039                                 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2040                                 mdelay(10);
2041                         }
2042
2043                         mvs_bytes_dmaed(mvi, phy_no);
2044                         /* whether driver is going to handle hot plug */
2045                         if (phy->phy_event & PHY_PLUG_OUT) {
2046                                 mvs_port_notify_formed(&phy->sas_phy, 0);
2047                                 phy->phy_event &= ~PHY_PLUG_OUT;
2048                         }
2049                 } else {
2050                         mv_dprintk("plugin interrupt but phy%d is gone\n",
2051                                 phy_no + mvi->id*mvi->chip->n_phy);
2052                 }
2053         } else if (phy->irq_status & PHYEV_BROAD_CH) {
2054                 mv_dprintk("phy %d broadcast change.\n",
2055                         phy_no + mvi->id*mvi->chip->n_phy);
2056                 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2057                                 EXP_BRCT_CHG);
2058         }
2059 }
2060
2061 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2062 {
2063         u32 rx_prod_idx, rx_desc;
2064         bool attn = false;
2065
2066         /* the first dword in the RX ring is special: it contains
2067          * a mirror of the hardware's RX producer index, so that
2068          * we don't have to stall the CPU reading that register.
2069          * The actual RX ring is offset by one dword, due to this.
2070          */
2071         rx_prod_idx = mvi->rx_cons;
2072         mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2073         if (mvi->rx_cons == 0xfff)      /* h/w hasn't touched RX ring yet */
2074                 return 0;
2075
2076         /* The CMPL_Q may come late, read from register and try again
2077         * note: if coalescing is enabled,
2078         * it will need to read from register every time for sure
2079         */
2080         if (unlikely(mvi->rx_cons == rx_prod_idx))
2081                 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2082
2083         if (mvi->rx_cons == rx_prod_idx)
2084                 return 0;
2085
2086         while (mvi->rx_cons != rx_prod_idx) {
2087                 /* increment our internal RX consumer pointer */
2088                 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2089                 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2090
2091                 if (likely(rx_desc & RXQ_DONE))
2092                         mvs_slot_complete(mvi, rx_desc, 0);
2093                 if (rx_desc & RXQ_ATTN) {
2094                         attn = true;
2095                 } else if (rx_desc & RXQ_ERR) {
2096                         if (!(rx_desc & RXQ_DONE))
2097                                 mvs_slot_complete(mvi, rx_desc, 0);
2098                 } else if (rx_desc & RXQ_SLOT_RESET) {
2099                         mvs_slot_free(mvi, rx_desc);
2100                 }
2101         }
2102
2103         if (attn && self_clear)
2104                 MVS_CHIP_DISP->int_full(mvi);
2105         return 0;
2106 }
2107