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                     qc->tf.command == ATA_CMD_FPDMA_RECV ||
 434                     qc->tf.command == ATA_CMD_FPDMA_SEND) {
 435                         *tag = qc->tag;
 436                         return 1;
 437                 }
 438         }
 439
 440         return 0;
 441 }
 442
 443 static int mvs_task_prep_ata(struct mvs_info *mvi,
 444                              struct mvs_task_exec_info *tei)
 445 {
 446         struct sas_task *task = tei->task;
 447         struct domain_device *dev = task->dev;
 448         struct mvs_device *mvi_dev = dev->lldd_dev;
 449         struct mvs_cmd_hdr *hdr = tei->hdr;
 450         struct asd_sas_port *sas_port = dev->port;
 451         struct mvs_slot_info *slot;
 452         void *buf_prd;
 453         u32 tag = tei->tag, hdr_tag;
 454         u32 flags, del_q;
 455         void *buf_tmp;
 456         u8 *buf_cmd, *buf_oaf;
 457         dma_addr_t buf_tmp_dma;
 458         u32 i, req_len, resp_len;
 459         const u32 max_resp_len = SB_RFB_MAX;
 460
 461         if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
 462                 mv_dprintk("Have not enough regiset for dev %d.\n",
 463                         mvi_dev->device_id);
 464                 return -EBUSY;
 465         }
 466         slot = &mvi->slot_info[tag];
 467         slot->tx = mvi->tx_prod;
 468         del_q = TXQ_MODE_I | tag |
 469                 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
 470                 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
 471                 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
 472         mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
 473
 474         if (task->data_dir == DMA_FROM_DEVICE)
 475                 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
 476         else
 477                 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 478
 479         if (task->ata_task.use_ncq)
 480                 flags |= MCH_FPDMA;
 481         if (dev->sata_dev.class == ATA_DEV_ATAPI) {
 482                 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
 483                         flags |= MCH_ATAPI;
 484         }
 485
 486         hdr->flags = cpu_to_le32(flags);
 487
 488         if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
 489                 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 490         else
 491                 hdr_tag = tag;
 492
 493         hdr->tags = cpu_to_le32(hdr_tag);
 494
 495         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 496
 497         /*
 498          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 499          */
 500
 501         /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
 502         buf_cmd = buf_tmp = slot->buf;
 503         buf_tmp_dma = slot->buf_dma;
 504
 505         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 506
 507         buf_tmp += MVS_ATA_CMD_SZ;
 508         buf_tmp_dma += MVS_ATA_CMD_SZ;
 509
 510         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 511         /* used for STP.  unused for SATA? */
 512         buf_oaf = buf_tmp;
 513         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 514
 515         buf_tmp += MVS_OAF_SZ;
 516         buf_tmp_dma += MVS_OAF_SZ;
 517
 518         /* region 3: PRD table ********************************************* */
 519         buf_prd = buf_tmp;
 520
 521         if (tei->n_elem)
 522                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 523         else
 524                 hdr->prd_tbl = 0;
 525         i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
 526
 527         buf_tmp += i;
 528         buf_tmp_dma += i;
 529
 530         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 531         slot->response = buf_tmp;
 532         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 533         if (mvi->flags & MVF_FLAG_SOC)
 534                 hdr->reserved[0] = 0;
 535
 536         req_len = sizeof(struct host_to_dev_fis);
 537         resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
 538             sizeof(struct mvs_err_info) - i;
 539
 540         /* request, response lengths */
 541         resp_len = min(resp_len, max_resp_len);
 542         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 543
 544         if (likely(!task->ata_task.device_control_reg_update))
 545                 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
 546         /* fill in command FIS and ATAPI CDB */
 547         memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
 548         if (dev->sata_dev.class == ATA_DEV_ATAPI)
 549                 memcpy(buf_cmd + STP_ATAPI_CMD,
 550                         task->ata_task.atapi_packet, 16);
 551
 552         /* generate open address frame hdr (first 12 bytes) */
 553         /* initiator, STP, ftype 1h */
 554         buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
 555         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 556         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 557         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 558
 559         /* fill in PRD (scatter/gather) table, if any */
 560         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 561
 562         if (task->data_dir == DMA_FROM_DEVICE)
 563                 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
 564                                 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
 565
 566         return 0;
 567 }
 568
 569 static int mvs_task_prep_ssp(struct mvs_info *mvi,
 570                              struct mvs_task_exec_info *tei, int is_tmf,
 571                              struct mvs_tmf_task *tmf)
 572 {
 573         struct sas_task *task = tei->task;
 574         struct mvs_cmd_hdr *hdr = tei->hdr;
 575         struct mvs_port *port = tei->port;
 576         struct domain_device *dev = task->dev;
 577         struct mvs_device *mvi_dev = dev->lldd_dev;
 578         struct asd_sas_port *sas_port = dev->port;
 579         struct mvs_slot_info *slot;
 580         void *buf_prd;
 581         struct ssp_frame_hdr *ssp_hdr;
 582         void *buf_tmp;
 583         u8 *buf_cmd, *buf_oaf, fburst = 0;
 584         dma_addr_t buf_tmp_dma;
 585         u32 flags;
 586         u32 resp_len, req_len, i, tag = tei->tag;
 587         const u32 max_resp_len = SB_RFB_MAX;
 588         u32 phy_mask;
 589
 590         slot = &mvi->slot_info[tag];
 591
 592         phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
 593                 sas_port->phy_mask) & TXQ_PHY_MASK;
 594
 595         slot->tx = mvi->tx_prod;
 596         mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
 597                                 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
 598                                 (phy_mask << TXQ_PHY_SHIFT));
 599
 600         flags = MCH_RETRY;
 601         if (task->ssp_task.enable_first_burst) {
 602                 flags |= MCH_FBURST;
 603                 fburst = (1 << 7);
 604         }
 605         if (is_tmf)
 606                 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
 607         else
 608                 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
 609
 610         hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
 611         hdr->tags = cpu_to_le32(tag);
 612         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 613
 614         /*
 615          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 616          */
 617
 618         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
 619         buf_cmd = buf_tmp = slot->buf;
 620         buf_tmp_dma = slot->buf_dma;
 621
 622         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 623
 624         buf_tmp += MVS_SSP_CMD_SZ;
 625         buf_tmp_dma += MVS_SSP_CMD_SZ;
 626
 627         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 628         buf_oaf = buf_tmp;
 629         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 630
 631         buf_tmp += MVS_OAF_SZ;
 632         buf_tmp_dma += MVS_OAF_SZ;
 633
 634         /* region 3: PRD table ********************************************* */
 635         buf_prd = buf_tmp;
 636         if (tei->n_elem)
 637                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 638         else
 639                 hdr->prd_tbl = 0;
 640
 641         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 642         buf_tmp += i;
 643         buf_tmp_dma += i;
 644
 645         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 646         slot->response = buf_tmp;
 647         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 648         if (mvi->flags & MVF_FLAG_SOC)
 649                 hdr->reserved[0] = 0;
 650
 651         resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
 652             sizeof(struct mvs_err_info) - i;
 653         resp_len = min(resp_len, max_resp_len);
 654
 655         req_len = sizeof(struct ssp_frame_hdr) + 28;
 656
 657         /* request, response lengths */
 658         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 659
 660         /* generate open address frame hdr (first 12 bytes) */
 661         /* initiator, SSP, ftype 1h */
 662         buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
 663         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 664         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 665         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 666
 667         /* fill in SSP frame header (Command Table.SSP frame header) */
 668         ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
 669
 670         if (is_tmf)
 671                 ssp_hdr->frame_type = SSP_TASK;
 672         else
 673                 ssp_hdr->frame_type = SSP_COMMAND;
 674
 675         memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
 676                HASHED_SAS_ADDR_SIZE);
 677         memcpy(ssp_hdr->hashed_src_addr,
 678                dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
 679         ssp_hdr->tag = cpu_to_be16(tag);
 680
 681         /* fill in IU for TASK and Command Frame */
 682         buf_cmd += sizeof(*ssp_hdr);
 683         memcpy(buf_cmd, &task->ssp_task.LUN, 8);
 684
 685         if (ssp_hdr->frame_type != SSP_TASK) {
 686                 buf_cmd[9] = fburst | task->ssp_task.task_attr |
 687                                 (task->ssp_task.task_prio << 3);
 688                 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
 689                        task->ssp_task.cmd->cmd_len);
 690         } else{
 691                 buf_cmd[10] = tmf->tmf;
 692                 switch (tmf->tmf) {
 693                 case TMF_ABORT_TASK:
 694                 case TMF_QUERY_TASK:
 695                         buf_cmd[12] =
 696                                 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
 697                         buf_cmd[13] =
 698                                 tmf->tag_of_task_to_be_managed & 0xff;
 699                         break;
 700                 default:
 701                         break;
 702                 }
 703         }
 704         /* fill in PRD (scatter/gather) table, if any */
 705         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 706         return 0;
 707 }
 708
 709 #define DEV_IS_GONE(mvi_dev)    ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
 710 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
 711                                 struct mvs_tmf_task *tmf, int *pass)
 712 {
 713         struct domain_device *dev = task->dev;
 714         struct mvs_device *mvi_dev = dev->lldd_dev;
 715         struct mvs_task_exec_info tei;
 716         struct mvs_slot_info *slot;
 717         u32 tag = 0xdeadbeef, n_elem = 0;
 718         int rc = 0;
 719
 720         if (!dev->port) {
 721                 struct task_status_struct *tsm = &task->task_status;
 722
 723                 tsm->resp = SAS_TASK_UNDELIVERED;
 724                 tsm->stat = SAS_PHY_DOWN;
 725                 /*
 726                  * libsas will use dev->port, should
 727                  * not call task_done for sata
 728                  */
 729                 if (dev->dev_type != SAS_SATA_DEV)
 730                         task->task_done(task);
 731                 return rc;
 732         }
 733
 734         if (DEV_IS_GONE(mvi_dev)) {
 735                 if (mvi_dev)
 736                         mv_dprintk("device %d not ready.\n",
 737                                 mvi_dev->device_id);
 738                 else
 739                         mv_dprintk("device %016llx not ready.\n",
 740                                 SAS_ADDR(dev->sas_addr));
 741
 742                 rc = SAS_PHY_DOWN;
 743                 return rc;
 744         }
 745         tei.port = dev->port->lldd_port;
 746         if (tei.port && !tei.port->port_attached && !tmf) {
 747                 if (sas_protocol_ata(task->task_proto)) {
 748                         struct task_status_struct *ts = &task->task_status;
 749                         mv_dprintk("SATA/STP port %d does not attach"
 750                                         "device.\n", dev->port->id);
 751                         ts->resp = SAS_TASK_COMPLETE;
 752                         ts->stat = SAS_PHY_DOWN;
 753
 754                         task->task_done(task);
 755
 756                 } else {
 757                         struct task_status_struct *ts = &task->task_status;
 758                         mv_dprintk("SAS port %d does not attach"
 759                                 "device.\n", dev->port->id);
 760                         ts->resp = SAS_TASK_UNDELIVERED;
 761                         ts->stat = SAS_PHY_DOWN;
 762                         task->task_done(task);
 763                 }
 764                 return rc;
 765         }
 766
 767         if (!sas_protocol_ata(task->task_proto)) {
 768                 if (task->num_scatter) {
 769                         n_elem = dma_map_sg(mvi->dev,
 770                                             task->scatter,
 771                                             task->num_scatter,
 772                                             task->data_dir);
 773                         if (!n_elem) {
 774                                 rc = -ENOMEM;
 775                                 goto prep_out;
 776                         }
 777                 }
 778         } else {
 779                 n_elem = task->num_scatter;
 780         }
 781
 782         rc = mvs_tag_alloc(mvi, &tag);
 783         if (rc)
 784                 goto err_out;
 785
 786         slot = &mvi->slot_info[tag];
 787
 788         task->lldd_task = NULL;
 789         slot->n_elem = n_elem;
 790         slot->slot_tag = tag;
 791
 792         slot->buf = pci_pool_alloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
 793         if (!slot->buf)
 794                 goto err_out_tag;
 795         memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
 796
 797         tei.task = task;
 798         tei.hdr = &mvi->slot[tag];
 799         tei.tag = tag;
 800         tei.n_elem = n_elem;
 801         switch (task->task_proto) {
 802         case SAS_PROTOCOL_SMP:
 803                 rc = mvs_task_prep_smp(mvi, &tei);
 804                 break;
 805         case SAS_PROTOCOL_SSP:
 806                 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
 807                 break;
 808         case SAS_PROTOCOL_SATA:
 809         case SAS_PROTOCOL_STP:
 810         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 811                 rc = mvs_task_prep_ata(mvi, &tei);
 812                 break;
 813         default:
 814                 dev_printk(KERN_ERR, mvi->dev,
 815                         "unknown sas_task proto: 0x%x\n",
 816                         task->task_proto);
 817                 rc = -EINVAL;
 818                 break;
 819         }
 820
 821         if (rc) {
 822                 mv_dprintk("rc is %x\n", rc);
 823                 goto err_out_slot_buf;
 824         }
 825         slot->task = task;
 826         slot->port = tei.port;
 827         task->lldd_task = slot;
 828         list_add_tail(&slot->entry, &tei.port->list);
 829         spin_lock(&task->task_state_lock);
 830         task->task_state_flags |= SAS_TASK_AT_INITIATOR;
 831         spin_unlock(&task->task_state_lock);
 832
 833         mvi_dev->running_req++;
 834         ++(*pass);
 835         mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
 836
 837         return rc;
 838
 839 err_out_slot_buf:
 840         pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 841 err_out_tag:
 842         mvs_tag_free(mvi, tag);
 843 err_out:
 844
 845         dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
 846         if (!sas_protocol_ata(task->task_proto))
 847                 if (n_elem)
 848                         dma_unmap_sg(mvi->dev, task->scatter, n_elem,
 849                                      task->data_dir);
 850 prep_out:
 851         return rc;
 852 }
 853
 854 static int mvs_task_exec(struct sas_task *task, gfp_t gfp_flags,
 855                                 struct completion *completion, int is_tmf,
 856                                 struct mvs_tmf_task *tmf)
 857 {
 858         struct mvs_info *mvi = NULL;
 859         u32 rc = 0;
 860         u32 pass = 0;
 861         unsigned long flags = 0;
 862
 863         mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
 864
 865         spin_lock_irqsave(&mvi->lock, flags);
 866         rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
 867         if (rc)
 868                 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
 869
 870         if (likely(pass))
 871                         MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
 872                                 (MVS_CHIP_SLOT_SZ - 1));
 873         spin_unlock_irqrestore(&mvi->lock, flags);
 874
 875         return rc;
 876 }
 877
 878 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
 879 {
 880         return mvs_task_exec(task, gfp_flags, NULL, 0, NULL);
 881 }
 882
 883 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
 884 {
 885         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
 886         mvs_tag_clear(mvi, slot_idx);
 887 }
 888
 889 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
 890                           struct mvs_slot_info *slot, u32 slot_idx)
 891 {
 892         if (!slot)
 893                 return;
 894         if (!slot->task)
 895                 return;
 896         if (!sas_protocol_ata(task->task_proto))
 897                 if (slot->n_elem)
 898                         dma_unmap_sg(mvi->dev, task->scatter,
 899                                      slot->n_elem, task->data_dir);
 900
 901         switch (task->task_proto) {
 902         case SAS_PROTOCOL_SMP:
 903                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
 904                              PCI_DMA_FROMDEVICE);
 905                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
 906                              PCI_DMA_TODEVICE);
 907                 break;
 908
 909         case SAS_PROTOCOL_SATA:
 910         case SAS_PROTOCOL_STP:
 911         case SAS_PROTOCOL_SSP:
 912         default:
 913                 /* do nothing */
 914                 break;
 915         }
 916
 917         if (slot->buf) {
 918                 pci_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 919                 slot->buf = NULL;
 920         }
 921         list_del_init(&slot->entry);
 922         task->lldd_task = NULL;
 923         slot->task = NULL;
 924         slot->port = NULL;
 925         slot->slot_tag = 0xFFFFFFFF;
 926         mvs_slot_free(mvi, slot_idx);
 927 }
 928
 929 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
 930 {
 931         struct mvs_phy *phy = &mvi->phy[phy_no];
 932         struct mvs_port *port = phy->port;
 933         int j, no;
 934
 935         for_each_phy(port->wide_port_phymap, j, no) {
 936                 if (j & 1) {
 937                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 938                                                 PHYR_WIDE_PORT);
 939                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 940                                                 port->wide_port_phymap);
 941                 } else {
 942                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 943                                                 PHYR_WIDE_PORT);
 944                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 945                                                 0);
 946                 }
 947         }
 948 }
 949
 950 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
 951 {
 952         u32 tmp;
 953         struct mvs_phy *phy = &mvi->phy[i];
 954         struct mvs_port *port = phy->port;
 955
 956         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
 957         if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
 958                 if (!port)
 959                         phy->phy_attached = 1;
 960                 return tmp;
 961         }
 962
 963         if (port) {
 964                 if (phy->phy_type & PORT_TYPE_SAS) {
 965                         port->wide_port_phymap &= ~(1U << i);
 966                         if (!port->wide_port_phymap)
 967                                 port->port_attached = 0;
 968                         mvs_update_wideport(mvi, i);
 969                 } else if (phy->phy_type & PORT_TYPE_SATA)
 970                         port->port_attached = 0;
 971                 phy->port = NULL;
 972                 phy->phy_attached = 0;
 973                 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
 974         }
 975         return 0;
 976 }
 977
 978 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
 979 {
 980         u32 *s = (u32 *) buf;
 981
 982         if (!s)
 983                 return NULL;
 984
 985         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
 986         s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 987
 988         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
 989         s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 990
 991         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
 992         s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 993
 994         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
 995         s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 996
 997         if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
 998                 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
 999
1000         return s;
1001 }
1002
1003 static u32 mvs_is_sig_fis_received(u32 irq_status)
1004 {
1005         return irq_status & PHYEV_SIG_FIS;
1006 }
1007
1008 static void mvs_sig_remove_timer(struct mvs_phy *phy)
1009 {
1010         if (phy->timer.function)
1011                 del_timer(&phy->timer);
1012         phy->timer.function = NULL;
1013 }
1014
1015 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1016 {
1017         struct mvs_phy *phy = &mvi->phy[i];
1018         struct sas_identify_frame *id;
1019
1020         id = (struct sas_identify_frame *)phy->frame_rcvd;
1021
1022         if (get_st) {
1023                 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1024                 phy->phy_status = mvs_is_phy_ready(mvi, i);
1025         }
1026
1027         if (phy->phy_status) {
1028                 int oob_done = 0;
1029                 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1030
1031                 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1032
1033                 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1034                 if (phy->phy_type & PORT_TYPE_SATA) {
1035                         phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1036                         if (mvs_is_sig_fis_received(phy->irq_status)) {
1037                                 mvs_sig_remove_timer(phy);
1038                                 phy->phy_attached = 1;
1039                                 phy->att_dev_sas_addr =
1040                                         i + mvi->id * mvi->chip->n_phy;
1041                                 if (oob_done)
1042                                         sas_phy->oob_mode = SATA_OOB_MODE;
1043                                 phy->frame_rcvd_size =
1044                                     sizeof(struct dev_to_host_fis);
1045                                 mvs_get_d2h_reg(mvi, i, id);
1046                         } else {
1047                                 u32 tmp;
1048                                 dev_printk(KERN_DEBUG, mvi->dev,
1049                                         "Phy%d : No sig fis\n", i);
1050                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1051                                 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1052                                                 tmp | PHYEV_SIG_FIS);
1053                                 phy->phy_attached = 0;
1054                                 phy->phy_type &= ~PORT_TYPE_SATA;
1055                                 goto out_done;
1056                         }
1057                 }       else if (phy->phy_type & PORT_TYPE_SAS
1058                         || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1059                         phy->phy_attached = 1;
1060                         phy->identify.device_type =
1061                                 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1062
1063                         if (phy->identify.device_type == SAS_END_DEVICE)
1064                                 phy->identify.target_port_protocols =
1065                                                         SAS_PROTOCOL_SSP;
1066                         else if (phy->identify.device_type != SAS_PHY_UNUSED)
1067                                 phy->identify.target_port_protocols =
1068                                                         SAS_PROTOCOL_SMP;
1069                         if (oob_done)
1070                                 sas_phy->oob_mode = SAS_OOB_MODE;
1071                         phy->frame_rcvd_size =
1072                             sizeof(struct sas_identify_frame);
1073                 }
1074                 memcpy(sas_phy->attached_sas_addr,
1075                         &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1076
1077                 if (MVS_CHIP_DISP->phy_work_around)
1078                         MVS_CHIP_DISP->phy_work_around(mvi, i);
1079         }
1080         mv_dprintk("phy %d attach dev info is %x\n",
1081                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1082         mv_dprintk("phy %d attach sas addr is %llx\n",
1083                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1084 out_done:
1085         if (get_st)
1086                 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1087 }
1088
1089 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1090 {
1091         struct sas_ha_struct *sas_ha = sas_phy->ha;
1092         struct mvs_info *mvi = NULL; int i = 0, hi;
1093         struct mvs_phy *phy = sas_phy->lldd_phy;
1094         struct asd_sas_port *sas_port = sas_phy->port;
1095         struct mvs_port *port;
1096         unsigned long flags = 0;
1097         if (!sas_port)
1098                 return;
1099
1100         while (sas_ha->sas_phy[i]) {
1101                 if (sas_ha->sas_phy[i] == sas_phy)
1102                         break;
1103                 i++;
1104         }
1105         hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1106         mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1107         if (i >= mvi->chip->n_phy)
1108                 port = &mvi->port[i - mvi->chip->n_phy];
1109         else
1110                 port = &mvi->port[i];
1111         if (lock)
1112                 spin_lock_irqsave(&mvi->lock, flags);
1113         port->port_attached = 1;
1114         phy->port = port;
1115         sas_port->lldd_port = port;
1116         if (phy->phy_type & PORT_TYPE_SAS) {
1117                 port->wide_port_phymap = sas_port->phy_mask;
1118                 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1119                 mvs_update_wideport(mvi, sas_phy->id);
1120
1121                 /* direct attached SAS device */
1122                 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1123                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1124                         MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1125                 }
1126         }
1127         if (lock)
1128                 spin_unlock_irqrestore(&mvi->lock, flags);
1129 }
1130
1131 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1132 {
1133         struct domain_device *dev;
1134         struct mvs_phy *phy = sas_phy->lldd_phy;
1135         struct mvs_info *mvi = phy->mvi;
1136         struct asd_sas_port *port = sas_phy->port;
1137         int phy_no = 0;
1138
1139         while (phy != &mvi->phy[phy_no]) {
1140                 phy_no++;
1141                 if (phy_no >= MVS_MAX_PHYS)
1142                         return;
1143         }
1144         list_for_each_entry(dev, &port->dev_list, dev_list_node)
1145                 mvs_do_release_task(phy->mvi, phy_no, dev);
1146
1147 }
1148
1149
1150 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1151 {
1152         mvs_port_notify_formed(sas_phy, 1);
1153 }
1154
1155 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1156 {
1157         mvs_port_notify_deformed(sas_phy, 1);
1158 }
1159
1160 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1161 {
1162         u32 dev;
1163         for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1164                 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1165                         mvi->devices[dev].device_id = dev;
1166                         return &mvi->devices[dev];
1167                 }
1168         }
1169
1170         if (dev == MVS_MAX_DEVICES)
1171                 mv_printk("max support %d devices, ignore ..\n",
1172                         MVS_MAX_DEVICES);
1173
1174         return NULL;
1175 }
1176
1177 void mvs_free_dev(struct mvs_device *mvi_dev)
1178 {
1179         u32 id = mvi_dev->device_id;
1180         memset(mvi_dev, 0, sizeof(*mvi_dev));
1181         mvi_dev->device_id = id;
1182         mvi_dev->dev_type = SAS_PHY_UNUSED;
1183         mvi_dev->dev_status = MVS_DEV_NORMAL;
1184         mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1185 }
1186
1187 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1188 {
1189         unsigned long flags = 0;
1190         int res = 0;
1191         struct mvs_info *mvi = NULL;
1192         struct domain_device *parent_dev = dev->parent;
1193         struct mvs_device *mvi_device;
1194
1195         mvi = mvs_find_dev_mvi(dev);
1196
1197         if (lock)
1198                 spin_lock_irqsave(&mvi->lock, flags);
1199
1200         mvi_device = mvs_alloc_dev(mvi);
1201         if (!mvi_device) {
1202                 res = -1;
1203                 goto found_out;
1204         }
1205         dev->lldd_dev = mvi_device;
1206         mvi_device->dev_status = MVS_DEV_NORMAL;
1207         mvi_device->dev_type = dev->dev_type;
1208         mvi_device->mvi_info = mvi;
1209         mvi_device->sas_device = dev;
1210         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1211                 int phy_id;
1212                 u8 phy_num = parent_dev->ex_dev.num_phys;
1213                 struct ex_phy *phy;
1214                 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1215                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
1216                         if (SAS_ADDR(phy->attached_sas_addr) ==
1217                                 SAS_ADDR(dev->sas_addr)) {
1218                                 mvi_device->attached_phy = phy_id;
1219                                 break;
1220                         }
1221                 }
1222
1223                 if (phy_id == phy_num) {
1224                         mv_printk("Error: no attached dev:%016llx"
1225                                 "at ex:%016llx.\n",
1226                                 SAS_ADDR(dev->sas_addr),
1227                                 SAS_ADDR(parent_dev->sas_addr));
1228                         res = -1;
1229                 }
1230         }
1231
1232 found_out:
1233         if (lock)
1234                 spin_unlock_irqrestore(&mvi->lock, flags);
1235         return res;
1236 }
1237
1238 int mvs_dev_found(struct domain_device *dev)
1239 {
1240         return mvs_dev_found_notify(dev, 1);
1241 }
1242
1243 void mvs_dev_gone_notify(struct domain_device *dev)
1244 {
1245         unsigned long flags = 0;
1246         struct mvs_device *mvi_dev = dev->lldd_dev;
1247         struct mvs_info *mvi;
1248
1249         if (!mvi_dev) {
1250                 mv_dprintk("found dev has gone.\n");
1251                 return;
1252         }
1253
1254         mvi = mvi_dev->mvi_info;
1255
1256         spin_lock_irqsave(&mvi->lock, flags);
1257
1258         mv_dprintk("found dev[%d:%x] is gone.\n",
1259                 mvi_dev->device_id, mvi_dev->dev_type);
1260         mvs_release_task(mvi, dev);
1261         mvs_free_reg_set(mvi, mvi_dev);
1262         mvs_free_dev(mvi_dev);
1263
1264         dev->lldd_dev = NULL;
1265         mvi_dev->sas_device = NULL;
1266
1267         spin_unlock_irqrestore(&mvi->lock, flags);
1268 }
1269
1270
1271 void mvs_dev_gone(struct domain_device *dev)
1272 {
1273         mvs_dev_gone_notify(dev);
1274 }
1275
1276 static void mvs_task_done(struct sas_task *task)
1277 {
1278         if (!del_timer(&task->slow_task->timer))
1279                 return;
1280         complete(&task->slow_task->completion);
1281 }
1282
1283 static void mvs_tmf_timedout(unsigned long data)
1284 {
1285         struct sas_task *task = (struct sas_task *)data;
1286
1287         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1288         complete(&task->slow_task->completion);
1289 }
1290
1291 #define MVS_TASK_TIMEOUT 20
1292 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1293                         void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1294 {
1295         int res, retry;
1296         struct sas_task *task = NULL;
1297
1298         for (retry = 0; retry < 3; retry++) {
1299                 task = sas_alloc_slow_task(GFP_KERNEL);
1300                 if (!task)
1301                         return -ENOMEM;
1302
1303                 task->dev = dev;
1304                 task->task_proto = dev->tproto;
1305
1306                 memcpy(&task->ssp_task, parameter, para_len);
1307                 task->task_done = mvs_task_done;
1308
1309                 task->slow_task->timer.data = (unsigned long) task;
1310                 task->slow_task->timer.function = mvs_tmf_timedout;
1311                 task->slow_task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1312                 add_timer(&task->slow_task->timer);
1313
1314                 res = mvs_task_exec(task, GFP_KERNEL, NULL, 1, tmf);
1315
1316                 if (res) {
1317                         del_timer(&task->slow_task->timer);
1318                         mv_printk("executing internal task failed:%d\n", res);
1319                         goto ex_err;
1320                 }
1321
1322                 wait_for_completion(&task->slow_task->completion);
1323                 res = TMF_RESP_FUNC_FAILED;
1324                 /* Even TMF timed out, return direct. */
1325                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1326                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1327                                 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1328                                 goto ex_err;
1329                         }
1330                 }
1331
1332                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1333                     task->task_status.stat == SAM_STAT_GOOD) {
1334                         res = TMF_RESP_FUNC_COMPLETE;
1335                         break;
1336                 }
1337
1338                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1339                       task->task_status.stat == SAS_DATA_UNDERRUN) {
1340                         /* no error, but return the number of bytes of
1341                          * underrun */
1342                         res = task->task_status.residual;
1343                         break;
1344                 }
1345
1346                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1347                       task->task_status.stat == SAS_DATA_OVERRUN) {
1348                         mv_dprintk("blocked task error.\n");
1349                         res = -EMSGSIZE;
1350                         break;
1351                 } else {
1352                         mv_dprintk(" task to dev %016llx response: 0x%x "
1353                                     "status 0x%x\n",
1354                                     SAS_ADDR(dev->sas_addr),
1355                                     task->task_status.resp,
1356                                     task->task_status.stat);
1357                         sas_free_task(task);
1358                         task = NULL;
1359
1360                 }
1361         }
1362 ex_err:
1363         BUG_ON(retry == 3 && task != NULL);
1364         sas_free_task(task);
1365         return res;
1366 }
1367
1368 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1369                                 u8 *lun, struct mvs_tmf_task *tmf)
1370 {
1371         struct sas_ssp_task ssp_task;
1372         if (!(dev->tproto & SAS_PROTOCOL_SSP))
1373                 return TMF_RESP_FUNC_ESUPP;
1374
1375         memcpy(ssp_task.LUN, lun, 8);
1376
1377         return mvs_exec_internal_tmf_task(dev, &ssp_task,
1378                                 sizeof(ssp_task), tmf);
1379 }
1380
1381
1382 /*  Standard mandates link reset for ATA  (type 0)
1383     and hard reset for SSP (type 1) , only for RECOVERY */
1384 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1385 {
1386         int rc;
1387         struct sas_phy *phy = sas_get_local_phy(dev);
1388         int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1389                         (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1390         rc = sas_phy_reset(phy, reset_type);
1391         sas_put_local_phy(phy);
1392         msleep(2000);
1393         return rc;
1394 }
1395
1396 /* mandatory SAM-3 */
1397 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1398 {
1399         unsigned long flags;
1400         int rc = TMF_RESP_FUNC_FAILED;
1401         struct mvs_tmf_task tmf_task;
1402         struct mvs_device * mvi_dev = dev->lldd_dev;
1403         struct mvs_info *mvi = mvi_dev->mvi_info;
1404
1405         tmf_task.tmf = TMF_LU_RESET;
1406         mvi_dev->dev_status = MVS_DEV_EH;
1407         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1408         if (rc == TMF_RESP_FUNC_COMPLETE) {
1409                 spin_lock_irqsave(&mvi->lock, flags);
1410                 mvs_release_task(mvi, dev);
1411                 spin_unlock_irqrestore(&mvi->lock, flags);
1412         }
1413         /* If failed, fall-through I_T_Nexus reset */
1414         mv_printk("%s for device[%x]:rc= %d\n", __func__,
1415                         mvi_dev->device_id, rc);
1416         return rc;
1417 }
1418
1419 int mvs_I_T_nexus_reset(struct domain_device *dev)
1420 {
1421         unsigned long flags;
1422         int rc = TMF_RESP_FUNC_FAILED;
1423     struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1424         struct mvs_info *mvi = mvi_dev->mvi_info;
1425
1426         if (mvi_dev->dev_status != MVS_DEV_EH)
1427                 return TMF_RESP_FUNC_COMPLETE;
1428         else
1429                 mvi_dev->dev_status = MVS_DEV_NORMAL;
1430         rc = mvs_debug_I_T_nexus_reset(dev);
1431         mv_printk("%s for device[%x]:rc= %d\n",
1432                 __func__, mvi_dev->device_id, rc);
1433
1434         spin_lock_irqsave(&mvi->lock, flags);
1435         mvs_release_task(mvi, dev);
1436         spin_unlock_irqrestore(&mvi->lock, flags);
1437
1438         return rc;
1439 }
1440 /* optional SAM-3 */
1441 int mvs_query_task(struct sas_task *task)
1442 {
1443         u32 tag;
1444         struct scsi_lun lun;
1445         struct mvs_tmf_task tmf_task;
1446         int rc = TMF_RESP_FUNC_FAILED;
1447
1448         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1449                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1450                 struct domain_device *dev = task->dev;
1451                 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1452                 struct mvs_info *mvi = mvi_dev->mvi_info;
1453
1454                 int_to_scsilun(cmnd->device->lun, &lun);
1455                 rc = mvs_find_tag(mvi, task, &tag);
1456                 if (rc == 0) {
1457                         rc = TMF_RESP_FUNC_FAILED;
1458                         return rc;
1459                 }
1460
1461                 tmf_task.tmf = TMF_QUERY_TASK;
1462                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1463
1464                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1465                 switch (rc) {
1466                 /* The task is still in Lun, release it then */
1467                 case TMF_RESP_FUNC_SUCC:
1468                 /* The task is not in Lun or failed, reset the phy */
1469                 case TMF_RESP_FUNC_FAILED:
1470                 case TMF_RESP_FUNC_COMPLETE:
1471                         break;
1472                 }
1473         }
1474         mv_printk("%s:rc= %d\n", __func__, rc);
1475         return rc;
1476 }
1477
1478 /*  mandatory SAM-3, still need free task/slot info */
1479 int mvs_abort_task(struct sas_task *task)
1480 {
1481         struct scsi_lun lun;
1482         struct mvs_tmf_task tmf_task;
1483         struct domain_device *dev = task->dev;
1484         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1485         struct mvs_info *mvi;
1486         int rc = TMF_RESP_FUNC_FAILED;
1487         unsigned long flags;
1488         u32 tag;
1489
1490         if (!mvi_dev) {
1491                 mv_printk("Device has removed\n");
1492                 return TMF_RESP_FUNC_FAILED;
1493         }
1494
1495         mvi = mvi_dev->mvi_info;
1496
1497         spin_lock_irqsave(&task->task_state_lock, flags);
1498         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1499                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1500                 rc = TMF_RESP_FUNC_COMPLETE;
1501                 goto out;
1502         }
1503         spin_unlock_irqrestore(&task->task_state_lock, flags);
1504         mvi_dev->dev_status = MVS_DEV_EH;
1505         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1506                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1507
1508                 int_to_scsilun(cmnd->device->lun, &lun);
1509                 rc = mvs_find_tag(mvi, task, &tag);
1510                 if (rc == 0) {
1511                         mv_printk("No such tag in %s\n", __func__);
1512                         rc = TMF_RESP_FUNC_FAILED;
1513                         return rc;
1514                 }
1515
1516                 tmf_task.tmf = TMF_ABORT_TASK;
1517                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1518
1519                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1520
1521                 /* if successful, clear the task and callback forwards.*/
1522                 if (rc == TMF_RESP_FUNC_COMPLETE) {
1523                         u32 slot_no;
1524                         struct mvs_slot_info *slot;
1525
1526                         if (task->lldd_task) {
1527                                 slot = task->lldd_task;
1528                                 slot_no = (u32) (slot - mvi->slot_info);
1529                                 spin_lock_irqsave(&mvi->lock, flags);
1530                                 mvs_slot_complete(mvi, slot_no, 1);
1531                                 spin_unlock_irqrestore(&mvi->lock, flags);
1532                         }
1533                 }
1534
1535         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1536                 task->task_proto & SAS_PROTOCOL_STP) {
1537                 if (SAS_SATA_DEV == dev->dev_type) {
1538                         struct mvs_slot_info *slot = task->lldd_task;
1539                         u32 slot_idx = (u32)(slot - mvi->slot_info);
1540                         mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1541                                    "slot=%p slot_idx=x%x\n",
1542                                    mvi, task, slot, slot_idx);
1543                         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1544                         mvs_slot_task_free(mvi, task, slot, slot_idx);
1545                         rc = TMF_RESP_FUNC_COMPLETE;
1546                         goto out;
1547                 }
1548
1549         }
1550 out:
1551         if (rc != TMF_RESP_FUNC_COMPLETE)
1552                 mv_printk("%s:rc= %d\n", __func__, rc);
1553         return rc;
1554 }
1555
1556 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1557 {
1558         int rc = TMF_RESP_FUNC_FAILED;
1559         struct mvs_tmf_task tmf_task;
1560
1561         tmf_task.tmf = TMF_ABORT_TASK_SET;
1562         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1563
1564         return rc;
1565 }
1566
1567 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1568 {
1569         int rc = TMF_RESP_FUNC_FAILED;
1570         struct mvs_tmf_task tmf_task;
1571
1572         tmf_task.tmf = TMF_CLEAR_ACA;
1573         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1574
1575         return rc;
1576 }
1577
1578 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1579 {
1580         int rc = TMF_RESP_FUNC_FAILED;
1581         struct mvs_tmf_task tmf_task;
1582
1583         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1584         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1585
1586         return rc;
1587 }
1588
1589 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1590                         u32 slot_idx, int err)
1591 {
1592         struct mvs_device *mvi_dev = task->dev->lldd_dev;
1593         struct task_status_struct *tstat = &task->task_status;
1594         struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1595         int stat = SAM_STAT_GOOD;
1596
1597
1598         resp->frame_len = sizeof(struct dev_to_host_fis);
1599         memcpy(&resp->ending_fis[0],
1600                SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1601                sizeof(struct dev_to_host_fis));
1602         tstat->buf_valid_size = sizeof(*resp);
1603         if (unlikely(err)) {
1604                 if (unlikely(err & CMD_ISS_STPD))
1605                         stat = SAS_OPEN_REJECT;
1606                 else
1607                         stat = SAS_PROTO_RESPONSE;
1608        }
1609
1610         return stat;
1611 }
1612
1613 void mvs_set_sense(u8 *buffer, int len, int d_sense,
1614                 int key, int asc, int ascq)
1615 {
1616         memset(buffer, 0, len);
1617
1618         if (d_sense) {
1619                 /* Descriptor format */
1620                 if (len < 4) {
1621                         mv_printk("Length %d of sense buffer too small to "
1622                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1623                 }
1624
1625                 buffer[0] = 0x72;               /* Response Code        */
1626                 if (len > 1)
1627                         buffer[1] = key;        /* Sense Key */
1628                 if (len > 2)
1629                         buffer[2] = asc;        /* ASC  */
1630                 if (len > 3)
1631                         buffer[3] = ascq;       /* ASCQ */
1632         } else {
1633                 if (len < 14) {
1634                         mv_printk("Length %d of sense buffer too small to "
1635                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1636                 }
1637
1638                 buffer[0] = 0x70;               /* Response Code        */
1639                 if (len > 2)
1640                         buffer[2] = key;        /* Sense Key */
1641                 if (len > 7)
1642                         buffer[7] = 0x0a;       /* Additional Sense Length */
1643                 if (len > 12)
1644                         buffer[12] = asc;       /* ASC */
1645                 if (len > 13)
1646                         buffer[13] = ascq; /* ASCQ */
1647         }
1648
1649         return;
1650 }
1651
1652 void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1653                                 u8 key, u8 asc, u8 asc_q)
1654 {
1655         iu->datapres = 2;
1656         iu->response_data_len = 0;
1657         iu->sense_data_len = 17;
1658         iu->status = 02;
1659         mvs_set_sense(iu->sense_data, 17, 0,
1660                         key, asc, asc_q);
1661 }
1662
1663 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1664                          u32 slot_idx)
1665 {
1666         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1667         int stat;
1668         u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1669         u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1670         u32 tfs = 0;
1671         enum mvs_port_type type = PORT_TYPE_SAS;
1672
1673         if (err_dw0 & CMD_ISS_STPD)
1674                 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1675
1676         MVS_CHIP_DISP->command_active(mvi, slot_idx);
1677
1678         stat = SAM_STAT_CHECK_CONDITION;
1679         switch (task->task_proto) {
1680         case SAS_PROTOCOL_SSP:
1681         {
1682                 stat = SAS_ABORTED_TASK;
1683                 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1684                         struct ssp_response_iu *iu = slot->response +
1685                                 sizeof(struct mvs_err_info);
1686                         mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1687                         sas_ssp_task_response(mvi->dev, task, iu);
1688                         stat = SAM_STAT_CHECK_CONDITION;
1689                 }
1690                 if (err_dw1 & bit(31))
1691                         mv_printk("reuse same slot, retry command.\n");
1692                 break;
1693         }
1694         case SAS_PROTOCOL_SMP:
1695                 stat = SAM_STAT_CHECK_CONDITION;
1696                 break;
1697
1698         case SAS_PROTOCOL_SATA:
1699         case SAS_PROTOCOL_STP:
1700         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1701         {
1702                 task->ata_task.use_ncq = 0;
1703                 stat = SAS_PROTO_RESPONSE;
1704                 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1705         }
1706                 break;
1707         default:
1708                 break;
1709         }
1710
1711         return stat;
1712 }
1713
1714 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1715 {
1716         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1717         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1718         struct sas_task *task = slot->task;
1719         struct mvs_device *mvi_dev = NULL;
1720         struct task_status_struct *tstat;
1721         struct domain_device *dev;
1722         u32 aborted;
1723
1724         void *to;
1725         enum exec_status sts;
1726
1727         if (unlikely(!task || !task->lldd_task || !task->dev))
1728                 return -1;
1729
1730         tstat = &task->task_status;
1731         dev = task->dev;
1732         mvi_dev = dev->lldd_dev;
1733
1734         spin_lock(&task->task_state_lock);
1735         task->task_state_flags &=
1736                 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1737         task->task_state_flags |= SAS_TASK_STATE_DONE;
1738         /* race condition*/
1739         aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1740         spin_unlock(&task->task_state_lock);
1741
1742         memset(tstat, 0, sizeof(*tstat));
1743         tstat->resp = SAS_TASK_COMPLETE;
1744
1745         if (unlikely(aborted)) {
1746                 tstat->stat = SAS_ABORTED_TASK;
1747                 if (mvi_dev && mvi_dev->running_req)
1748                         mvi_dev->running_req--;
1749                 if (sas_protocol_ata(task->task_proto))
1750                         mvs_free_reg_set(mvi, mvi_dev);
1751
1752                 mvs_slot_task_free(mvi, task, slot, slot_idx);
1753                 return -1;
1754         }
1755
1756         /* when no device attaching, go ahead and complete by error handling*/
1757         if (unlikely(!mvi_dev || flags)) {
1758                 if (!mvi_dev)
1759                         mv_dprintk("port has not device.\n");
1760                 tstat->stat = SAS_PHY_DOWN;
1761                 goto out;
1762         }
1763
1764         /*
1765          * error info record present; slot->response is 32 bit aligned but may
1766          * not be 64 bit aligned, so check for zero in two 32 bit reads
1767          */
1768         if (unlikely((rx_desc & RXQ_ERR)
1769                      && (*((u32 *)slot->response)
1770                          || *(((u32 *)slot->response) + 1)))) {
1771                 mv_dprintk("port %d slot %d rx_desc %X has error info"
1772                         "%016llX.\n", slot->port->sas_port.id, slot_idx,
1773                          rx_desc, get_unaligned_le64(slot->response));
1774                 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1775                 tstat->resp = SAS_TASK_COMPLETE;
1776                 goto out;
1777         }
1778
1779         switch (task->task_proto) {
1780         case SAS_PROTOCOL_SSP:
1781                 /* hw says status == 0, datapres == 0 */
1782                 if (rx_desc & RXQ_GOOD) {
1783                         tstat->stat = SAM_STAT_GOOD;
1784                         tstat->resp = SAS_TASK_COMPLETE;
1785                 }
1786                 /* response frame present */
1787                 else if (rx_desc & RXQ_RSP) {
1788                         struct ssp_response_iu *iu = slot->response +
1789                                                 sizeof(struct mvs_err_info);
1790                         sas_ssp_task_response(mvi->dev, task, iu);
1791                 } else
1792                         tstat->stat = SAM_STAT_CHECK_CONDITION;
1793                 break;
1794
1795         case SAS_PROTOCOL_SMP: {
1796                         struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1797                         tstat->stat = SAM_STAT_GOOD;
1798                         to = kmap_atomic(sg_page(sg_resp));
1799                         memcpy(to + sg_resp->offset,
1800                                 slot->response + sizeof(struct mvs_err_info),
1801                                 sg_dma_len(sg_resp));
1802                         kunmap_atomic(to);
1803                         break;
1804                 }
1805
1806         case SAS_PROTOCOL_SATA:
1807         case SAS_PROTOCOL_STP:
1808         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1809                         tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1810                         break;
1811                 }
1812
1813         default:
1814                 tstat->stat = SAM_STAT_CHECK_CONDITION;
1815                 break;
1816         }
1817         if (!slot->port->port_attached) {
1818                 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1819                 tstat->stat = SAS_PHY_DOWN;
1820         }
1821
1822
1823 out:
1824         if (mvi_dev && mvi_dev->running_req) {
1825                 mvi_dev->running_req--;
1826                 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1827                         mvs_free_reg_set(mvi, mvi_dev);
1828         }
1829         mvs_slot_task_free(mvi, task, slot, slot_idx);
1830         sts = tstat->stat;
1831
1832         spin_unlock(&mvi->lock);
1833         if (task->task_done)
1834                 task->task_done(task);
1835
1836         spin_lock(&mvi->lock);
1837
1838         return sts;
1839 }
1840
1841 void mvs_do_release_task(struct mvs_info *mvi,
1842                 int phy_no, struct domain_device *dev)
1843 {
1844         u32 slot_idx;
1845         struct mvs_phy *phy;
1846         struct mvs_port *port;
1847         struct mvs_slot_info *slot, *slot2;
1848
1849         phy = &mvi->phy[phy_no];
1850         port = phy->port;
1851         if (!port)
1852                 return;
1853         /* clean cmpl queue in case request is already finished */
1854         mvs_int_rx(mvi, false);
1855
1856
1857
1858         list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1859                 struct sas_task *task;
1860                 slot_idx = (u32) (slot - mvi->slot_info);
1861                 task = slot->task;
1862
1863                 if (dev && task->dev != dev)
1864                         continue;
1865
1866                 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1867                         slot_idx, slot->slot_tag, task);
1868                 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1869
1870                 mvs_slot_complete(mvi, slot_idx, 1);
1871         }
1872 }
1873
1874 void mvs_release_task(struct mvs_info *mvi,
1875                       struct domain_device *dev)
1876 {
1877         int i, phyno[WIDE_PORT_MAX_PHY], num;
1878         num = mvs_find_dev_phyno(dev, phyno);
1879         for (i = 0; i < num; i++)
1880                 mvs_do_release_task(mvi, phyno[i], dev);
1881 }
1882
1883 static void mvs_phy_disconnected(struct mvs_phy *phy)
1884 {
1885         phy->phy_attached = 0;
1886         phy->att_dev_info = 0;
1887         phy->att_dev_sas_addr = 0;
1888 }
1889
1890 static void mvs_work_queue(struct work_struct *work)
1891 {
1892         struct delayed_work *dw = container_of(work, struct delayed_work, work);
1893         struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1894         struct mvs_info *mvi = mwq->mvi;
1895         unsigned long flags;
1896         u32 phy_no = (unsigned long) mwq->data;
1897         struct sas_ha_struct *sas_ha = mvi->sas;
1898         struct mvs_phy *phy = &mvi->phy[phy_no];
1899         struct asd_sas_phy *sas_phy = &phy->sas_phy;
1900
1901         spin_lock_irqsave(&mvi->lock, flags);
1902         if (mwq->handler & PHY_PLUG_EVENT) {
1903
1904                 if (phy->phy_event & PHY_PLUG_OUT) {
1905                         u32 tmp;
1906                         struct sas_identify_frame *id;
1907                         id = (struct sas_identify_frame *)phy->frame_rcvd;
1908                         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1909                         phy->phy_event &= ~PHY_PLUG_OUT;
1910                         if (!(tmp & PHY_READY_MASK)) {
1911                                 sas_phy_disconnected(sas_phy);
1912                                 mvs_phy_disconnected(phy);
1913                                 sas_ha->notify_phy_event(sas_phy,
1914                                         PHYE_LOSS_OF_SIGNAL);
1915                                 mv_dprintk("phy%d Removed Device\n", phy_no);
1916                         } else {
1917                                 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1918                                 mvs_update_phyinfo(mvi, phy_no, 1);
1919                                 mvs_bytes_dmaed(mvi, phy_no);
1920                                 mvs_port_notify_formed(sas_phy, 0);
1921                                 mv_dprintk("phy%d Attached Device\n", phy_no);
1922                         }
1923                 }
1924         } else if (mwq->handler & EXP_BRCT_CHG) {
1925                 phy->phy_event &= ~EXP_BRCT_CHG;
1926                 sas_ha->notify_port_event(sas_phy,
1927                                 PORTE_BROADCAST_RCVD);
1928                 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1929         }
1930         list_del(&mwq->entry);
1931         spin_unlock_irqrestore(&mvi->lock, flags);
1932         kfree(mwq);
1933 }
1934
1935 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1936 {
1937         struct mvs_wq *mwq;
1938         int ret = 0;
1939
1940         mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1941         if (mwq) {
1942                 mwq->mvi = mvi;
1943                 mwq->data = data;
1944                 mwq->handler = handler;
1945                 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1946                 list_add_tail(&mwq->entry, &mvi->wq_list);
1947                 schedule_delayed_work(&mwq->work_q, HZ * 2);
1948         } else
1949                 ret = -ENOMEM;
1950
1951         return ret;
1952 }
1953
1954 static void mvs_sig_time_out(unsigned long tphy)
1955 {
1956         struct mvs_phy *phy = (struct mvs_phy *)tphy;
1957         struct mvs_info *mvi = phy->mvi;
1958         u8 phy_no;
1959
1960         for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1961                 if (&mvi->phy[phy_no] == phy) {
1962                         mv_dprintk("Get signature time out, reset phy %d\n",
1963                                 phy_no+mvi->id*mvi->chip->n_phy);
1964                         MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1965                 }
1966         }
1967 }
1968
1969 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1970 {
1971         u32 tmp;
1972         struct mvs_phy *phy = &mvi->phy[phy_no];
1973
1974         phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1975         MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1976         mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1977                 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1978         mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1979                 phy->irq_status);
1980
1981         /*
1982         * events is port event now ,
1983         * we need check the interrupt status which belongs to per port.
1984         */
1985
1986         if (phy->irq_status & PHYEV_DCDR_ERR) {
1987                 mv_dprintk("phy %d STP decoding error.\n",
1988                 phy_no + mvi->id*mvi->chip->n_phy);
1989         }
1990
1991         if (phy->irq_status & PHYEV_POOF) {
1992                 mdelay(500);
1993                 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1994                         int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1995                         int ready;
1996                         mvs_do_release_task(mvi, phy_no, NULL);
1997                         phy->phy_event |= PHY_PLUG_OUT;
1998                         MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1999                         mvs_handle_event(mvi,
2000                                 (void *)(unsigned long)phy_no,
2001                                 PHY_PLUG_EVENT);
2002                         ready = mvs_is_phy_ready(mvi, phy_no);
2003                         if (ready || dev_sata) {
2004                                 if (MVS_CHIP_DISP->stp_reset)
2005                                         MVS_CHIP_DISP->stp_reset(mvi,
2006                                                         phy_no);
2007                                 else
2008                                         MVS_CHIP_DISP->phy_reset(mvi,
2009                                                         phy_no, MVS_SOFT_RESET);
2010                                 return;
2011                         }
2012                 }
2013         }
2014
2015         if (phy->irq_status & PHYEV_COMWAKE) {
2016                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2017                 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2018                                         tmp | PHYEV_SIG_FIS);
2019                 if (phy->timer.function == NULL) {
2020                         phy->timer.data = (unsigned long)phy;
2021                         phy->timer.function = mvs_sig_time_out;
2022                         phy->timer.expires = jiffies + 5*HZ;
2023                         add_timer(&phy->timer);
2024                 }
2025         }
2026         if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2027                 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2028                 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2029                 if (phy->phy_status) {
2030                         mdelay(10);
2031                         MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2032                         if (phy->phy_type & PORT_TYPE_SATA) {
2033                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2034                                                 mvi, phy_no);
2035                                 tmp &= ~PHYEV_SIG_FIS;
2036                                 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2037                                                         phy_no, tmp);
2038                         }
2039                         mvs_update_phyinfo(mvi, phy_no, 0);
2040                         if (phy->phy_type & PORT_TYPE_SAS) {
2041                                 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
2042                                 mdelay(10);
2043                         }
2044
2045                         mvs_bytes_dmaed(mvi, phy_no);
2046                         /* whether driver is going to handle hot plug */
2047                         if (phy->phy_event & PHY_PLUG_OUT) {
2048                                 mvs_port_notify_formed(&phy->sas_phy, 0);
2049                                 phy->phy_event &= ~PHY_PLUG_OUT;
2050                         }
2051                 } else {
2052                         mv_dprintk("plugin interrupt but phy%d is gone\n",
2053                                 phy_no + mvi->id*mvi->chip->n_phy);
2054                 }
2055         } else if (phy->irq_status & PHYEV_BROAD_CH) {
2056                 mv_dprintk("phy %d broadcast change.\n",
2057                         phy_no + mvi->id*mvi->chip->n_phy);
2058                 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
2059                                 EXP_BRCT_CHG);
2060         }
2061 }
2062
2063 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2064 {
2065         u32 rx_prod_idx, rx_desc;
2066         bool attn = false;
2067
2068         /* the first dword in the RX ring is special: it contains
2069          * a mirror of the hardware's RX producer index, so that
2070          * we don't have to stall the CPU reading that register.
2071          * The actual RX ring is offset by one dword, due to this.
2072          */
2073         rx_prod_idx = mvi->rx_cons;
2074         mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2075         if (mvi->rx_cons == 0xfff)      /* h/w hasn't touched RX ring yet */
2076                 return 0;
2077
2078         /* The CMPL_Q may come late, read from register and try again
2079         * note: if coalescing is enabled,
2080         * it will need to read from register every time for sure
2081         */
2082         if (unlikely(mvi->rx_cons == rx_prod_idx))
2083                 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2084
2085         if (mvi->rx_cons == rx_prod_idx)
2086                 return 0;
2087
2088         while (mvi->rx_cons != rx_prod_idx) {
2089                 /* increment our internal RX consumer pointer */
2090                 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2091                 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2092
2093                 if (likely(rx_desc & RXQ_DONE))
2094                         mvs_slot_complete(mvi, rx_desc, 0);
2095                 if (rx_desc & RXQ_ATTN) {
2096                         attn = true;
2097                 } else if (rx_desc & RXQ_ERR) {
2098                         if (!(rx_desc & RXQ_DONE))
2099                                 mvs_slot_complete(mvi, rx_desc, 0);
2100                 } else if (rx_desc & RXQ_SLOT_RESET) {
2101                         mvs_slot_free(mvi, rx_desc);
2102                 }
2103         }
2104
2105         if (attn && self_clear)
2106                 MVS_CHIP_DISP->int_full(mvi);
2107         return 0;
2108 }
2109
2110 int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index,
2111                         u8 reg_count, u8 *write_data)
2112 {
2113         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
2114         struct mvs_info *mvi = mvs_prv->mvi[0];
2115
2116         if (MVS_CHIP_DISP->gpio_write) {
2117                 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type,
2118                         reg_index, reg_count, write_data);
2119         }
2120
2121         return -ENOSYS;
2122 }