drivers/scsi/mvsas/mv_sas.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Marvell 88SE64xx/88SE94xx main function
   4  *
   5  * Copyright 2007 Red Hat, Inc.
   6  * Copyright 2008 Marvell. <[email protected]>
   7  * Copyright 2009-2011 Marvell. <[email protected]>
   8 */
   9
  10 #include "mv_sas.h"
  11
  12 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
  13 {
  14         if (task->lldd_task) {
  15                 struct mvs_slot_info *slot;
  16                 slot = task->lldd_task;
  17                 *tag = slot->slot_tag;
  18                 return 1;
  19         }
  20         return 0;
  21 }
  22
  23 static void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
  24 {
  25         void *bitmap = mvi->rsvd_tags;
  26         clear_bit(tag, bitmap);
  27 }
  28
  29 static void mvs_tag_free(struct mvs_info *mvi, u32 tag)
  30 {
  31         if (tag >= MVS_RSVD_SLOTS)
  32                 return;
  33
  34         mvs_tag_clear(mvi, tag);
  35 }
  36
  37 static void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
  38 {
  39         void *bitmap = mvi->rsvd_tags;
  40         set_bit(tag, bitmap);
  41 }
  42
  43 static int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
  44 {
  45         unsigned int index, tag;
  46         void *bitmap = mvi->rsvd_tags;
  47
  48         index = find_first_zero_bit(bitmap, MVS_RSVD_SLOTS);
  49         tag = index;
  50         if (tag >= MVS_RSVD_SLOTS)
  51                 return -SAS_QUEUE_FULL;
  52         mvs_tag_set(mvi, tag);
  53         *tag_out = tag;
  54         return 0;
  55 }
  56
  57 static struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
  58 {
  59         unsigned long i = 0, j = 0, hi = 0;
  60         struct sas_ha_struct *sha = dev->port->ha;
  61         struct mvs_info *mvi = NULL;
  62         struct asd_sas_phy *phy;
  63
  64         while (sha->sas_port[i]) {
  65                 if (sha->sas_port[i] == dev->port) {
  66                         spin_lock(&sha->sas_port[i]->phy_list_lock);
  67                         phy =  container_of(sha->sas_port[i]->phy_list.next,
  68                                 struct asd_sas_phy, port_phy_el);
  69                         spin_unlock(&sha->sas_port[i]->phy_list_lock);
  70                         j = 0;
  71                         while (sha->sas_phy[j]) {
  72                                 if (sha->sas_phy[j] == phy)
  73                                         break;
  74                                 j++;
  75                         }
  76                         break;
  77                 }
  78                 i++;
  79         }
  80         hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
  81         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
  82
  83         return mvi;
  84
  85 }
  86
  87 static int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
  88 {
  89         unsigned long i = 0, j = 0, n = 0, num = 0;
  90         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
  91         struct mvs_info *mvi = mvi_dev->mvi_info;
  92         struct sas_ha_struct *sha = dev->port->ha;
  93
  94         while (sha->sas_port[i]) {
  95                 if (sha->sas_port[i] == dev->port) {
  96                         struct asd_sas_phy *phy;
  97
  98                         spin_lock(&sha->sas_port[i]->phy_list_lock);
  99                         list_for_each_entry(phy,
 100                                 &sha->sas_port[i]->phy_list, port_phy_el) {
 101                                 j = 0;
 102                                 while (sha->sas_phy[j]) {
 103                                         if (sha->sas_phy[j] == phy)
 104                                                 break;
 105                                         j++;
 106                                 }
 107                                 phyno[n] = (j >= mvi->chip->n_phy) ?
 108                                         (j - mvi->chip->n_phy) : j;
 109                                 num++;
 110                                 n++;
 111                         }
 112                         spin_unlock(&sha->sas_port[i]->phy_list_lock);
 113                         break;
 114                 }
 115                 i++;
 116         }
 117         return num;
 118 }
 119
 120 struct mvs_device *mvs_find_dev_by_reg_set(struct mvs_info *mvi,
 121                                                 u8 reg_set)
 122 {
 123         u32 dev_no;
 124         for (dev_no = 0; dev_no < MVS_MAX_DEVICES; dev_no++) {
 125                 if (mvi->devices[dev_no].taskfileset == MVS_ID_NOT_MAPPED)
 126                         continue;
 127
 128                 if (mvi->devices[dev_no].taskfileset == reg_set)
 129                         return &mvi->devices[dev_no];
 130         }
 131         return NULL;
 132 }
 133
 134 static inline void mvs_free_reg_set(struct mvs_info *mvi,
 135                                 struct mvs_device *dev)
 136 {
 137         if (!dev) {
 138                 mv_printk("device has been free.\n");
 139                 return;
 140         }
 141         if (dev->taskfileset == MVS_ID_NOT_MAPPED)
 142                 return;
 143         MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
 144 }
 145
 146 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
 147                                 struct mvs_device *dev)
 148 {
 149         if (dev->taskfileset != MVS_ID_NOT_MAPPED)
 150                 return 0;
 151         return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
 152 }
 153
 154 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
 155 {
 156         u32 no;
 157         for_each_phy(phy_mask, phy_mask, no) {
 158                 if (!(phy_mask & 1))
 159                         continue;
 160                 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
 161         }
 162 }
 163
 164 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 165                         void *funcdata)
 166 {
 167         int rc = 0, phy_id = sas_phy->id;
 168         u32 tmp, i = 0, hi;
 169         struct sas_ha_struct *sha = sas_phy->ha;
 170         struct mvs_info *mvi = NULL;
 171
 172         while (sha->sas_phy[i]) {
 173                 if (sha->sas_phy[i] == sas_phy)
 174                         break;
 175                 i++;
 176         }
 177         hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
 178         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
 179
 180         switch (func) {
 181         case PHY_FUNC_SET_LINK_RATE:
 182                 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
 183                 break;
 184
 185         case PHY_FUNC_HARD_RESET:
 186                 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
 187                 if (tmp & PHY_RST_HARD)
 188                         break;
 189                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_HARD_RESET);
 190                 break;
 191
 192         case PHY_FUNC_LINK_RESET:
 193                 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
 194                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, MVS_SOFT_RESET);
 195                 break;
 196
 197         case PHY_FUNC_DISABLE:
 198                 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
 199                 break;
 200         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 201         default:
 202                 rc = -ENOSYS;
 203         }
 204         msleep(200);
 205         return rc;
 206 }
 207
 208 void mvs_set_sas_addr(struct mvs_info *mvi, int port_id, u32 off_lo,
 209                       u32 off_hi, u64 sas_addr)
 210 {
 211         u32 lo = (u32)sas_addr;
 212         u32 hi = (u32)(sas_addr>>32);
 213
 214         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
 215         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
 216         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
 217         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
 218 }
 219
 220 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i, gfp_t gfp_flags)
 221 {
 222         struct mvs_phy *phy = &mvi->phy[i];
 223         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 224
 225         if (!phy->phy_attached)
 226                 return;
 227
 228         if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
 229                 && phy->phy_type & PORT_TYPE_SAS) {
 230                 return;
 231         }
 232
 233         sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags);
 234
 235         if (sas_phy->phy) {
 236                 struct sas_phy *sphy = sas_phy->phy;
 237
 238                 sphy->negotiated_linkrate = sas_phy->linkrate;
 239                 sphy->minimum_linkrate = phy->minimum_linkrate;
 240                 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
 241                 sphy->maximum_linkrate = phy->maximum_linkrate;
 242                 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
 243         }
 244
 245         if (phy->phy_type & PORT_TYPE_SAS) {
 246                 struct sas_identify_frame *id;
 247
 248                 id = (struct sas_identify_frame *)phy->frame_rcvd;
 249                 id->dev_type = phy->identify.device_type;
 250                 id->initiator_bits = SAS_PROTOCOL_ALL;
 251                 id->target_bits = phy->identify.target_port_protocols;
 252
 253                 /* direct attached SAS device */
 254                 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
 255                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
 256                         MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x00);
 257                 }
 258         } else if (phy->phy_type & PORT_TYPE_SATA) {
 259                 /*Nothing*/
 260         }
 261         mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
 262
 263         sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
 264
 265         sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags);
 266 }
 267
 268 void mvs_scan_start(struct Scsi_Host *shost)
 269 {
 270         int i, j;
 271         unsigned short core_nr;
 272         struct mvs_info *mvi;
 273         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 274         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
 275
 276         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 277
 278         for (j = 0; j < core_nr; j++) {
 279                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
 280                 for (i = 0; i < mvi->chip->n_phy; ++i)
 281                         mvs_bytes_dmaed(mvi, i, GFP_KERNEL);
 282         }
 283         mvs_prv->scan_finished = 1;
 284 }
 285
 286 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
 287 {
 288         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 289         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
 290
 291         if (mvs_prv->scan_finished == 0)
 292                 return 0;
 293
 294         sas_drain_work(sha);
 295         return 1;
 296 }
 297
 298 static int mvs_task_prep_smp(struct mvs_info *mvi,
 299                              struct mvs_task_exec_info *tei)
 300 {
 301         int elem, rc, i;
 302         struct sas_ha_struct *sha = mvi->sas;
 303         struct sas_task *task = tei->task;
 304         struct mvs_cmd_hdr *hdr = tei->hdr;
 305         struct domain_device *dev = task->dev;
 306         struct asd_sas_port *sas_port = dev->port;
 307         struct sas_phy *sphy = dev->phy;
 308         struct asd_sas_phy *sas_phy = sha->sas_phy[sphy->number];
 309         struct scatterlist *sg_req, *sg_resp;
 310         u32 req_len, resp_len, tag = tei->tag;
 311         void *buf_tmp;
 312         u8 *buf_oaf;
 313         dma_addr_t buf_tmp_dma;
 314         void *buf_prd;
 315         struct mvs_slot_info *slot = &mvi->slot_info[tag];
 316         u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 317
 318         /*
 319          * DMA-map SMP request, response buffers
 320          */
 321         sg_req = &task->smp_task.smp_req;
 322         elem = dma_map_sg(mvi->dev, sg_req, 1, DMA_TO_DEVICE);
 323         if (!elem)
 324                 return -ENOMEM;
 325         req_len = sg_dma_len(sg_req);
 326
 327         sg_resp = &task->smp_task.smp_resp;
 328         elem = dma_map_sg(mvi->dev, sg_resp, 1, DMA_FROM_DEVICE);
 329         if (!elem) {
 330                 rc = -ENOMEM;
 331                 goto err_out;
 332         }
 333         resp_len = SB_RFB_MAX;
 334
 335         /* must be in dwords */
 336         if ((req_len & 0x3) || (resp_len & 0x3)) {
 337                 rc = -EINVAL;
 338                 goto err_out_2;
 339         }
 340
 341         /*
 342          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 343          */
 344
 345         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
 346         buf_tmp = slot->buf;
 347         buf_tmp_dma = slot->buf_dma;
 348
 349         hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
 350
 351         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 352         buf_oaf = buf_tmp;
 353         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 354
 355         buf_tmp += MVS_OAF_SZ;
 356         buf_tmp_dma += MVS_OAF_SZ;
 357
 358         /* region 3: PRD table *********************************** */
 359         buf_prd = buf_tmp;
 360         if (tei->n_elem)
 361                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 362         else
 363                 hdr->prd_tbl = 0;
 364
 365         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 366         buf_tmp += i;
 367         buf_tmp_dma += i;
 368
 369         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 370         slot->response = buf_tmp;
 371         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 372         if (mvi->flags & MVF_FLAG_SOC)
 373                 hdr->reserved[0] = 0;
 374
 375         /*
 376          * Fill in TX ring and command slot header
 377          */
 378         slot->tx = mvi->tx_prod;
 379         mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
 380                                         TXQ_MODE_I | tag |
 381                                         (MVS_PHY_ID << TXQ_PHY_SHIFT));
 382
 383         hdr->flags |= flags;
 384         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
 385         hdr->tags = cpu_to_le32(tag);
 386         hdr->data_len = 0;
 387
 388         /* generate open address frame hdr (first 12 bytes) */
 389         /* initiator, SMP, ftype 1h */
 390         buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
 391         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 392         *(u16 *)(buf_oaf + 2) = 0xFFFF;         /* SAS SPEC */
 393         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 394
 395         /* fill in PRD (scatter/gather) table, if any */
 396         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 397
 398         return 0;
 399
 400 err_out_2:
 401         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
 402                      DMA_FROM_DEVICE);
 403 err_out:
 404         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
 405                      DMA_TO_DEVICE);
 406         return rc;
 407 }
 408
 409 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
 410 {
 411         struct ata_queued_cmd *qc = task->uldd_task;
 412
 413         if (qc) {
 414                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 415                     qc->tf.command == ATA_CMD_FPDMA_READ ||
 416                     qc->tf.command == ATA_CMD_FPDMA_RECV ||
 417                     qc->tf.command == ATA_CMD_FPDMA_SEND ||
 418                     qc->tf.command == ATA_CMD_NCQ_NON_DATA) {
 419                         *tag = qc->tag;
 420                         return 1;
 421                 }
 422         }
 423
 424         return 0;
 425 }
 426
 427 static int mvs_task_prep_ata(struct mvs_info *mvi,
 428                              struct mvs_task_exec_info *tei)
 429 {
 430         struct sas_task *task = tei->task;
 431         struct domain_device *dev = task->dev;
 432         struct mvs_device *mvi_dev = dev->lldd_dev;
 433         struct mvs_cmd_hdr *hdr = tei->hdr;
 434         struct asd_sas_port *sas_port = dev->port;
 435         struct mvs_slot_info *slot;
 436         void *buf_prd;
 437         u32 tag = tei->tag, hdr_tag;
 438         u32 flags, del_q;
 439         void *buf_tmp;
 440         u8 *buf_cmd, *buf_oaf;
 441         dma_addr_t buf_tmp_dma;
 442         u32 i, req_len, resp_len;
 443         const u32 max_resp_len = SB_RFB_MAX;
 444
 445         if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
 446                 mv_dprintk("Have not enough regiset for dev %d.\n",
 447                         mvi_dev->device_id);
 448                 return -EBUSY;
 449         }
 450         slot = &mvi->slot_info[tag];
 451         slot->tx = mvi->tx_prod;
 452         del_q = TXQ_MODE_I | tag |
 453                 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
 454                 ((sas_port->phy_mask & TXQ_PHY_MASK) << TXQ_PHY_SHIFT) |
 455                 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
 456         mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
 457
 458         if (task->data_dir == DMA_FROM_DEVICE)
 459                 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
 460         else
 461                 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 462
 463         if (task->ata_task.use_ncq)
 464                 flags |= MCH_FPDMA;
 465         if (dev->sata_dev.class == ATA_DEV_ATAPI) {
 466                 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
 467                         flags |= MCH_ATAPI;
 468         }
 469
 470         hdr->flags = cpu_to_le32(flags);
 471
 472         if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
 473                 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 474         else
 475                 hdr_tag = tag;
 476
 477         hdr->tags = cpu_to_le32(hdr_tag);
 478
 479         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 480
 481         /*
 482          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 483          */
 484
 485         /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
 486         buf_cmd = buf_tmp = slot->buf;
 487         buf_tmp_dma = slot->buf_dma;
 488
 489         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 490
 491         buf_tmp += MVS_ATA_CMD_SZ;
 492         buf_tmp_dma += MVS_ATA_CMD_SZ;
 493
 494         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 495         /* used for STP.  unused for SATA? */
 496         buf_oaf = buf_tmp;
 497         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 498
 499         buf_tmp += MVS_OAF_SZ;
 500         buf_tmp_dma += MVS_OAF_SZ;
 501
 502         /* region 3: PRD table ********************************************* */
 503         buf_prd = buf_tmp;
 504
 505         if (tei->n_elem)
 506                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 507         else
 508                 hdr->prd_tbl = 0;
 509         i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
 510
 511         buf_tmp += i;
 512         buf_tmp_dma += i;
 513
 514         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 515         slot->response = buf_tmp;
 516         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 517         if (mvi->flags & MVF_FLAG_SOC)
 518                 hdr->reserved[0] = 0;
 519
 520         req_len = sizeof(struct host_to_dev_fis);
 521         resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
 522             sizeof(struct mvs_err_info) - i;
 523
 524         /* request, response lengths */
 525         resp_len = min(resp_len, max_resp_len);
 526         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 527
 528         if (likely(!task->ata_task.device_control_reg_update))
 529                 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
 530         /* fill in command FIS and ATAPI CDB */
 531         memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
 532         if (dev->sata_dev.class == ATA_DEV_ATAPI)
 533                 memcpy(buf_cmd + STP_ATAPI_CMD,
 534                         task->ata_task.atapi_packet, 16);
 535
 536         /* generate open address frame hdr (first 12 bytes) */
 537         /* initiator, STP, ftype 1h */
 538         buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
 539         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 540         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 541         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 542
 543         /* fill in PRD (scatter/gather) table, if any */
 544         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 545
 546         if (task->data_dir == DMA_FROM_DEVICE)
 547                 MVS_CHIP_DISP->dma_fix(mvi, sas_port->phy_mask,
 548                                 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
 549
 550         return 0;
 551 }
 552
 553 static int mvs_task_prep_ssp(struct mvs_info *mvi,
 554                              struct mvs_task_exec_info *tei, int is_tmf,
 555                              struct sas_tmf_task *tmf)
 556 {
 557         struct sas_task *task = tei->task;
 558         struct mvs_cmd_hdr *hdr = tei->hdr;
 559         struct mvs_port *port = tei->port;
 560         struct domain_device *dev = task->dev;
 561         struct mvs_device *mvi_dev = dev->lldd_dev;
 562         struct asd_sas_port *sas_port = dev->port;
 563         struct mvs_slot_info *slot;
 564         void *buf_prd;
 565         struct ssp_frame_hdr *ssp_hdr;
 566         void *buf_tmp;
 567         u8 *buf_cmd, *buf_oaf, fburst = 0;
 568         dma_addr_t buf_tmp_dma;
 569         u32 flags;
 570         u32 resp_len, req_len, i, tag = tei->tag;
 571         const u32 max_resp_len = SB_RFB_MAX;
 572         u32 phy_mask;
 573
 574         slot = &mvi->slot_info[tag];
 575
 576         phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
 577                 sas_port->phy_mask) & TXQ_PHY_MASK;
 578
 579         slot->tx = mvi->tx_prod;
 580         mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
 581                                 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
 582                                 (phy_mask << TXQ_PHY_SHIFT));
 583
 584         flags = MCH_RETRY;
 585         if (task->ssp_task.enable_first_burst) {
 586                 flags |= MCH_FBURST;
 587                 fburst = (1 << 7);
 588         }
 589         if (is_tmf)
 590                 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
 591         else
 592                 flags |= (MCH_SSP_FR_CMD << MCH_SSP_FR_TYPE_SHIFT);
 593
 594         hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
 595         hdr->tags = cpu_to_le32(tag);
 596         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 597
 598         /*
 599          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 600          */
 601
 602         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
 603         buf_cmd = buf_tmp = slot->buf;
 604         buf_tmp_dma = slot->buf_dma;
 605
 606         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 607
 608         buf_tmp += MVS_SSP_CMD_SZ;
 609         buf_tmp_dma += MVS_SSP_CMD_SZ;
 610
 611         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 612         buf_oaf = buf_tmp;
 613         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 614
 615         buf_tmp += MVS_OAF_SZ;
 616         buf_tmp_dma += MVS_OAF_SZ;
 617
 618         /* region 3: PRD table ********************************************* */
 619         buf_prd = buf_tmp;
 620         if (tei->n_elem)
 621                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 622         else
 623                 hdr->prd_tbl = 0;
 624
 625         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 626         buf_tmp += i;
 627         buf_tmp_dma += i;
 628
 629         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 630         slot->response = buf_tmp;
 631         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 632         if (mvi->flags & MVF_FLAG_SOC)
 633                 hdr->reserved[0] = 0;
 634
 635         resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
 636             sizeof(struct mvs_err_info) - i;
 637         resp_len = min(resp_len, max_resp_len);
 638
 639         req_len = sizeof(struct ssp_frame_hdr) + 28;
 640
 641         /* request, response lengths */
 642         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 643
 644         /* generate open address frame hdr (first 12 bytes) */
 645         /* initiator, SSP, ftype 1h */
 646         buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
 647         buf_oaf[1] = min(sas_port->linkrate, dev->linkrate) & 0xf;
 648         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 649         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 650
 651         /* fill in SSP frame header (Command Table.SSP frame header) */
 652         ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
 653
 654         if (is_tmf)
 655                 ssp_hdr->frame_type = SSP_TASK;
 656         else
 657                 ssp_hdr->frame_type = SSP_COMMAND;
 658
 659         memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
 660                HASHED_SAS_ADDR_SIZE);
 661         memcpy(ssp_hdr->hashed_src_addr,
 662                dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
 663         ssp_hdr->tag = cpu_to_be16(tag);
 664
 665         /* fill in IU for TASK and Command Frame */
 666         buf_cmd += sizeof(*ssp_hdr);
 667         memcpy(buf_cmd, &task->ssp_task.LUN, 8);
 668
 669         if (ssp_hdr->frame_type != SSP_TASK) {
 670                 buf_cmd[9] = fburst | task->ssp_task.task_attr |
 671                                 (task->ssp_task.task_prio << 3);
 672                 memcpy(buf_cmd + 12, task->ssp_task.cmd->cmnd,
 673                        task->ssp_task.cmd->cmd_len);
 674         } else{
 675                 buf_cmd[10] = tmf->tmf;
 676                 switch (tmf->tmf) {
 677                 case TMF_ABORT_TASK:
 678                 case TMF_QUERY_TASK:
 679                         buf_cmd[12] =
 680                                 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
 681                         buf_cmd[13] =
 682                                 tmf->tag_of_task_to_be_managed & 0xff;
 683                         break;
 684                 default:
 685                         break;
 686                 }
 687         }
 688         /* fill in PRD (scatter/gather) table, if any */
 689         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 690         return 0;
 691 }
 692
 693 #define DEV_IS_GONE(mvi_dev)    ((!mvi_dev || (mvi_dev->dev_type == SAS_PHY_UNUSED)))
 694 static int mvs_task_prep(struct sas_task *task, struct mvs_info *mvi, int is_tmf,
 695                                 struct sas_tmf_task *tmf, int *pass)
 696 {
 697         struct domain_device *dev = task->dev;
 698         struct mvs_device *mvi_dev = dev->lldd_dev;
 699         struct mvs_task_exec_info tei;
 700         struct mvs_slot_info *slot;
 701         u32 tag = 0xdeadbeef, n_elem = 0;
 702         struct request *rq;
 703         int rc = 0;
 704
 705         if (!dev->port) {
 706                 struct task_status_struct *tsm = &task->task_status;
 707
 708                 tsm->resp = SAS_TASK_UNDELIVERED;
 709                 tsm->stat = SAS_PHY_DOWN;
 710                 /*
 711                  * libsas will use dev->port, should
 712                  * not call task_done for sata
 713                  */
 714                 if (dev->dev_type != SAS_SATA_DEV)
 715                         task->task_done(task);
 716                 return rc;
 717         }
 718
 719         if (DEV_IS_GONE(mvi_dev)) {
 720                 if (mvi_dev)
 721                         mv_dprintk("device %d not ready.\n",
 722                                 mvi_dev->device_id);
 723                 else
 724                         mv_dprintk("device %016llx not ready.\n",
 725                                 SAS_ADDR(dev->sas_addr));
 726
 727                 rc = SAS_PHY_DOWN;
 728                 return rc;
 729         }
 730         tei.port = dev->port->lldd_port;
 731         if (tei.port && !tei.port->port_attached && !tmf) {
 732                 if (sas_protocol_ata(task->task_proto)) {
 733                         struct task_status_struct *ts = &task->task_status;
 734                         mv_dprintk("SATA/STP port %d does not attach"
 735                                         "device.\n", dev->port->id);
 736                         ts->resp = SAS_TASK_COMPLETE;
 737                         ts->stat = SAS_PHY_DOWN;
 738
 739                         task->task_done(task);
 740
 741                 } else {
 742                         struct task_status_struct *ts = &task->task_status;
 743                         mv_dprintk("SAS port %d does not attach"
 744                                 "device.\n", dev->port->id);
 745                         ts->resp = SAS_TASK_UNDELIVERED;
 746                         ts->stat = SAS_PHY_DOWN;
 747                         task->task_done(task);
 748                 }
 749                 return rc;
 750         }
 751
 752         if (!sas_protocol_ata(task->task_proto)) {
 753                 if (task->num_scatter) {
 754                         n_elem = dma_map_sg(mvi->dev,
 755                                             task->scatter,
 756                                             task->num_scatter,
 757                                             task->data_dir);
 758                         if (!n_elem) {
 759                                 rc = -ENOMEM;
 760                                 goto prep_out;
 761                         }
 762                 }
 763         } else {
 764                 n_elem = task->num_scatter;
 765         }
 766
 767         rq = sas_task_find_rq(task);
 768         if (rq) {
 769                 tag = rq->tag + MVS_RSVD_SLOTS;
 770         } else {
 771                 rc = mvs_tag_alloc(mvi, &tag);
 772                 if (rc)
 773                         goto err_out;
 774         }
 775
 776         slot = &mvi->slot_info[tag];
 777
 778         task->lldd_task = NULL;
 779         slot->n_elem = n_elem;
 780         slot->slot_tag = tag;
 781
 782         slot->buf = dma_pool_zalloc(mvi->dma_pool, GFP_ATOMIC, &slot->buf_dma);
 783         if (!slot->buf) {
 784                 rc = -ENOMEM;
 785                 goto err_out_tag;
 786         }
 787
 788         tei.task = task;
 789         tei.hdr = &mvi->slot[tag];
 790         tei.tag = tag;
 791         tei.n_elem = n_elem;
 792         switch (task->task_proto) {
 793         case SAS_PROTOCOL_SMP:
 794                 rc = mvs_task_prep_smp(mvi, &tei);
 795                 break;
 796         case SAS_PROTOCOL_SSP:
 797                 rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
 798                 break;
 799         case SAS_PROTOCOL_SATA:
 800         case SAS_PROTOCOL_STP:
 801         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 802                 rc = mvs_task_prep_ata(mvi, &tei);
 803                 break;
 804         default:
 805                 dev_printk(KERN_ERR, mvi->dev,
 806                         "unknown sas_task proto: 0x%x\n",
 807                         task->task_proto);
 808                 rc = -EINVAL;
 809                 break;
 810         }
 811
 812         if (rc) {
 813                 mv_dprintk("rc is %x\n", rc);
 814                 goto err_out_slot_buf;
 815         }
 816         slot->task = task;
 817         slot->port = tei.port;
 818         task->lldd_task = slot;
 819         list_add_tail(&slot->entry, &tei.port->list);
 820
 821         mvi_dev->running_req++;
 822         ++(*pass);
 823         mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
 824
 825         return rc;
 826
 827 err_out_slot_buf:
 828         dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 829 err_out_tag:
 830         mvs_tag_free(mvi, tag);
 831 err_out:
 832
 833         dev_printk(KERN_ERR, mvi->dev, "mvsas prep failed[%d]!\n", rc);
 834         if (!sas_protocol_ata(task->task_proto))
 835                 if (n_elem)
 836                         dma_unmap_sg(mvi->dev, task->scatter, n_elem,
 837                                      task->data_dir);
 838 prep_out:
 839         return rc;
 840 }
 841
 842 int mvs_queue_command(struct sas_task *task, gfp_t gfp_flags)
 843 {
 844         struct mvs_info *mvi = NULL;
 845         u32 rc = 0;
 846         u32 pass = 0;
 847         unsigned long flags = 0;
 848         struct sas_tmf_task *tmf = task->tmf;
 849         int is_tmf = !!task->tmf;
 850
 851         mvi = ((struct mvs_device *)task->dev->lldd_dev)->mvi_info;
 852
 853         spin_lock_irqsave(&mvi->lock, flags);
 854         rc = mvs_task_prep(task, mvi, is_tmf, tmf, &pass);
 855         if (rc)
 856                 dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
 857
 858         if (likely(pass))
 859                         MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
 860                                 (MVS_CHIP_SLOT_SZ - 1));
 861         spin_unlock_irqrestore(&mvi->lock, flags);
 862
 863         return rc;
 864 }
 865
 866 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
 867 {
 868         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
 869         mvs_tag_free(mvi, slot_idx);
 870 }
 871
 872 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
 873                           struct mvs_slot_info *slot, u32 slot_idx)
 874 {
 875         if (!slot)
 876                 return;
 877         if (!slot->task)
 878                 return;
 879         if (!sas_protocol_ata(task->task_proto))
 880                 if (slot->n_elem)
 881                         dma_unmap_sg(mvi->dev, task->scatter,
 882                                      slot->n_elem, task->data_dir);
 883
 884         switch (task->task_proto) {
 885         case SAS_PROTOCOL_SMP:
 886                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
 887                              DMA_FROM_DEVICE);
 888                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
 889                              DMA_TO_DEVICE);
 890                 break;
 891
 892         case SAS_PROTOCOL_SATA:
 893         case SAS_PROTOCOL_STP:
 894         case SAS_PROTOCOL_SSP:
 895         default:
 896                 /* do nothing */
 897                 break;
 898         }
 899
 900         if (slot->buf) {
 901                 dma_pool_free(mvi->dma_pool, slot->buf, slot->buf_dma);
 902                 slot->buf = NULL;
 903         }
 904         list_del_init(&slot->entry);
 905         task->lldd_task = NULL;
 906         slot->task = NULL;
 907         slot->port = NULL;
 908         slot->slot_tag = 0xFFFFFFFF;
 909         mvs_slot_free(mvi, slot_idx);
 910 }
 911
 912 static void mvs_update_wideport(struct mvs_info *mvi, int phy_no)
 913 {
 914         struct mvs_phy *phy = &mvi->phy[phy_no];
 915         struct mvs_port *port = phy->port;
 916         int j, no;
 917
 918         for_each_phy(port->wide_port_phymap, j, no) {
 919                 if (j & 1) {
 920                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 921                                                 PHYR_WIDE_PORT);
 922                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 923                                                 port->wide_port_phymap);
 924                 } else {
 925                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
 926                                                 PHYR_WIDE_PORT);
 927                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
 928                                                 0);
 929                 }
 930         }
 931 }
 932
 933 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
 934 {
 935         u32 tmp;
 936         struct mvs_phy *phy = &mvi->phy[i];
 937         struct mvs_port *port = phy->port;
 938
 939         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
 940         if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
 941                 if (!port)
 942                         phy->phy_attached = 1;
 943                 return tmp;
 944         }
 945
 946         if (port) {
 947                 if (phy->phy_type & PORT_TYPE_SAS) {
 948                         port->wide_port_phymap &= ~(1U << i);
 949                         if (!port->wide_port_phymap)
 950                                 port->port_attached = 0;
 951                         mvs_update_wideport(mvi, i);
 952                 } else if (phy->phy_type & PORT_TYPE_SATA)
 953                         port->port_attached = 0;
 954                 phy->port = NULL;
 955                 phy->phy_attached = 0;
 956                 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
 957         }
 958         return 0;
 959 }
 960
 961 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
 962 {
 963         u32 *s = (u32 *) buf;
 964
 965         if (!s)
 966                 return NULL;
 967
 968         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
 969         s[3] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 970
 971         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
 972         s[2] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 973
 974         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
 975         s[1] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 976
 977         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
 978         s[0] = cpu_to_le32(MVS_CHIP_DISP->read_port_cfg_data(mvi, i));
 979
 980         if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
 981                 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
 982
 983         return s;
 984 }
 985
 986 static u32 mvs_is_sig_fis_received(u32 irq_status)
 987 {
 988         return irq_status & PHYEV_SIG_FIS;
 989 }
 990
 991 static void mvs_sig_remove_timer(struct mvs_phy *phy)
 992 {
 993         if (phy->timer.function)
 994                 del_timer(&phy->timer);
 995         phy->timer.function = NULL;
 996 }
 997
 998 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
 999 {
1000         struct mvs_phy *phy = &mvi->phy[i];
1001         struct sas_identify_frame *id;
1002
1003         id = (struct sas_identify_frame *)phy->frame_rcvd;
1004
1005         if (get_st) {
1006                 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1007                 phy->phy_status = mvs_is_phy_ready(mvi, i);
1008         }
1009
1010         if (phy->phy_status) {
1011                 int oob_done = 0;
1012                 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1013
1014                 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1015
1016                 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1017                 if (phy->phy_type & PORT_TYPE_SATA) {
1018                         phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1019                         if (mvs_is_sig_fis_received(phy->irq_status)) {
1020                                 mvs_sig_remove_timer(phy);
1021                                 phy->phy_attached = 1;
1022                                 phy->att_dev_sas_addr =
1023                                         i + mvi->id * mvi->chip->n_phy;
1024                                 if (oob_done)
1025                                         sas_phy->oob_mode = SATA_OOB_MODE;
1026                                 phy->frame_rcvd_size =
1027                                     sizeof(struct dev_to_host_fis);
1028                                 mvs_get_d2h_reg(mvi, i, id);
1029                         } else {
1030                                 u32 tmp;
1031                                 dev_printk(KERN_DEBUG, mvi->dev,
1032                                         "Phy%d : No sig fis\n", i);
1033                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1034                                 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1035                                                 tmp | PHYEV_SIG_FIS);
1036                                 phy->phy_attached = 0;
1037                                 phy->phy_type &= ~PORT_TYPE_SATA;
1038                                 goto out_done;
1039                         }
1040                 }       else if (phy->phy_type & PORT_TYPE_SAS
1041                         || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1042                         phy->phy_attached = 1;
1043                         phy->identify.device_type =
1044                                 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1045
1046                         if (phy->identify.device_type == SAS_END_DEVICE)
1047                                 phy->identify.target_port_protocols =
1048                                                         SAS_PROTOCOL_SSP;
1049                         else if (phy->identify.device_type != SAS_PHY_UNUSED)
1050                                 phy->identify.target_port_protocols =
1051                                                         SAS_PROTOCOL_SMP;
1052                         if (oob_done)
1053                                 sas_phy->oob_mode = SAS_OOB_MODE;
1054                         phy->frame_rcvd_size =
1055                             sizeof(struct sas_identify_frame);
1056                 }
1057                 memcpy(sas_phy->attached_sas_addr,
1058                         &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1059
1060                 if (MVS_CHIP_DISP->phy_work_around)
1061                         MVS_CHIP_DISP->phy_work_around(mvi, i);
1062         }
1063         mv_dprintk("phy %d attach dev info is %x\n",
1064                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1065         mv_dprintk("phy %d attach sas addr is %llx\n",
1066                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1067 out_done:
1068         if (get_st)
1069                 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1070 }
1071
1072 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1073 {
1074         struct sas_ha_struct *sas_ha = sas_phy->ha;
1075         struct mvs_info *mvi = NULL; int i = 0, hi;
1076         struct mvs_phy *phy = sas_phy->lldd_phy;
1077         struct asd_sas_port *sas_port = sas_phy->port;
1078         struct mvs_port *port;
1079         unsigned long flags = 0;
1080         if (!sas_port)
1081                 return;
1082
1083         while (sas_ha->sas_phy[i]) {
1084                 if (sas_ha->sas_phy[i] == sas_phy)
1085                         break;
1086                 i++;
1087         }
1088         hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1089         mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1090         if (i >= mvi->chip->n_phy)
1091                 port = &mvi->port[i - mvi->chip->n_phy];
1092         else
1093                 port = &mvi->port[i];
1094         if (lock)
1095                 spin_lock_irqsave(&mvi->lock, flags);
1096         port->port_attached = 1;
1097         phy->port = port;
1098         sas_port->lldd_port = port;
1099         if (phy->phy_type & PORT_TYPE_SAS) {
1100                 port->wide_port_phymap = sas_port->phy_mask;
1101                 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1102                 mvs_update_wideport(mvi, sas_phy->id);
1103
1104                 /* direct attached SAS device */
1105                 if (phy->att_dev_info & PORT_SSP_TRGT_MASK) {
1106                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_PHY_STAT);
1107                         MVS_CHIP_DISP->write_port_cfg_data(mvi, i, 0x04);
1108                 }
1109         }
1110         if (lock)
1111                 spin_unlock_irqrestore(&mvi->lock, flags);
1112 }
1113
1114 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1115 {
1116         struct domain_device *dev;
1117         struct mvs_phy *phy = sas_phy->lldd_phy;
1118         struct mvs_info *mvi = phy->mvi;
1119         struct asd_sas_port *port = sas_phy->port;
1120         int phy_no = 0;
1121
1122         while (phy != &mvi->phy[phy_no]) {
1123                 phy_no++;
1124                 if (phy_no >= MVS_MAX_PHYS)
1125                         return;
1126         }
1127         list_for_each_entry(dev, &port->dev_list, dev_list_node)
1128                 mvs_do_release_task(phy->mvi, phy_no, dev);
1129
1130 }
1131
1132
1133 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1134 {
1135         mvs_port_notify_formed(sas_phy, 1);
1136 }
1137
1138 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1139 {
1140         mvs_port_notify_deformed(sas_phy, 1);
1141 }
1142
1143 static struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1144 {
1145         u32 dev;
1146         for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1147                 if (mvi->devices[dev].dev_type == SAS_PHY_UNUSED) {
1148                         mvi->devices[dev].device_id = dev;
1149                         return &mvi->devices[dev];
1150                 }
1151         }
1152
1153         if (dev == MVS_MAX_DEVICES)
1154                 mv_printk("max support %d devices, ignore ..\n",
1155                         MVS_MAX_DEVICES);
1156
1157         return NULL;
1158 }
1159
1160 static void mvs_free_dev(struct mvs_device *mvi_dev)
1161 {
1162         u32 id = mvi_dev->device_id;
1163         memset(mvi_dev, 0, sizeof(*mvi_dev));
1164         mvi_dev->device_id = id;
1165         mvi_dev->dev_type = SAS_PHY_UNUSED;
1166         mvi_dev->dev_status = MVS_DEV_NORMAL;
1167         mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1168 }
1169
1170 static int mvs_dev_found_notify(struct domain_device *dev, int lock)
1171 {
1172         unsigned long flags = 0;
1173         int res = 0;
1174         struct mvs_info *mvi = NULL;
1175         struct domain_device *parent_dev = dev->parent;
1176         struct mvs_device *mvi_device;
1177
1178         mvi = mvs_find_dev_mvi(dev);
1179
1180         if (lock)
1181                 spin_lock_irqsave(&mvi->lock, flags);
1182
1183         mvi_device = mvs_alloc_dev(mvi);
1184         if (!mvi_device) {
1185                 res = -1;
1186                 goto found_out;
1187         }
1188         dev->lldd_dev = mvi_device;
1189         mvi_device->dev_status = MVS_DEV_NORMAL;
1190         mvi_device->dev_type = dev->dev_type;
1191         mvi_device->mvi_info = mvi;
1192         mvi_device->sas_device = dev;
1193         if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
1194                 int phy_id;
1195
1196                 phy_id = sas_find_attached_phy_id(&parent_dev->ex_dev, dev);
1197                 if (phy_id < 0) {
1198                         mv_printk("Error: no attached dev:%016llx"
1199                                 "at ex:%016llx.\n",
1200                                 SAS_ADDR(dev->sas_addr),
1201                                 SAS_ADDR(parent_dev->sas_addr));
1202                         res = phy_id;
1203                 } else {
1204                         mvi_device->attached_phy = phy_id;
1205                 }
1206         }
1207
1208 found_out:
1209         if (lock)
1210                 spin_unlock_irqrestore(&mvi->lock, flags);
1211         return res;
1212 }
1213
1214 int mvs_dev_found(struct domain_device *dev)
1215 {
1216         return mvs_dev_found_notify(dev, 1);
1217 }
1218
1219 static void mvs_dev_gone_notify(struct domain_device *dev)
1220 {
1221         unsigned long flags = 0;
1222         struct mvs_device *mvi_dev = dev->lldd_dev;
1223         struct mvs_info *mvi;
1224
1225         if (!mvi_dev) {
1226                 mv_dprintk("found dev has gone.\n");
1227                 return;
1228         }
1229
1230         mvi = mvi_dev->mvi_info;
1231
1232         spin_lock_irqsave(&mvi->lock, flags);
1233
1234         mv_dprintk("found dev[%d:%x] is gone.\n",
1235                 mvi_dev->device_id, mvi_dev->dev_type);
1236         mvs_release_task(mvi, dev);
1237         mvs_free_reg_set(mvi, mvi_dev);
1238         mvs_free_dev(mvi_dev);
1239
1240         dev->lldd_dev = NULL;
1241         mvi_dev->sas_device = NULL;
1242
1243         spin_unlock_irqrestore(&mvi->lock, flags);
1244 }
1245
1246
1247 void mvs_dev_gone(struct domain_device *dev)
1248 {
1249         mvs_dev_gone_notify(dev);
1250 }
1251
1252 /*  Standard mandates link reset for ATA  (type 0)
1253     and hard reset for SSP (type 1) , only for RECOVERY */
1254 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1255 {
1256         int rc;
1257         struct sas_phy *phy = sas_get_local_phy(dev);
1258         int reset_type = (dev->dev_type == SAS_SATA_DEV ||
1259                         (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1260         rc = sas_phy_reset(phy, reset_type);
1261         sas_put_local_phy(phy);
1262         msleep(2000);
1263         return rc;
1264 }
1265
1266 /* mandatory SAM-3 */
1267 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1268 {
1269         unsigned long flags;
1270         int rc = TMF_RESP_FUNC_FAILED;
1271         struct mvs_device * mvi_dev = dev->lldd_dev;
1272         struct mvs_info *mvi = mvi_dev->mvi_info;
1273
1274         mvi_dev->dev_status = MVS_DEV_EH;
1275         rc = sas_lu_reset(dev, lun);
1276         if (rc == TMF_RESP_FUNC_COMPLETE) {
1277                 spin_lock_irqsave(&mvi->lock, flags);
1278                 mvs_release_task(mvi, dev);
1279                 spin_unlock_irqrestore(&mvi->lock, flags);
1280         }
1281         /* If failed, fall-through I_T_Nexus reset */
1282         mv_printk("%s for device[%x]:rc= %d\n", __func__,
1283                         mvi_dev->device_id, rc);
1284         return rc;
1285 }
1286
1287 int mvs_I_T_nexus_reset(struct domain_device *dev)
1288 {
1289         unsigned long flags;
1290         int rc = TMF_RESP_FUNC_FAILED;
1291         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1292         struct mvs_info *mvi = mvi_dev->mvi_info;
1293
1294         if (mvi_dev->dev_status != MVS_DEV_EH)
1295                 return TMF_RESP_FUNC_COMPLETE;
1296         else
1297                 mvi_dev->dev_status = MVS_DEV_NORMAL;
1298         rc = mvs_debug_I_T_nexus_reset(dev);
1299         mv_printk("%s for device[%x]:rc= %d\n",
1300                 __func__, mvi_dev->device_id, rc);
1301
1302         spin_lock_irqsave(&mvi->lock, flags);
1303         mvs_release_task(mvi, dev);
1304         spin_unlock_irqrestore(&mvi->lock, flags);
1305
1306         return rc;
1307 }
1308 /* optional SAM-3 */
1309 int mvs_query_task(struct sas_task *task)
1310 {
1311         u32 tag;
1312         int rc = TMF_RESP_FUNC_FAILED;
1313
1314         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1315                 struct domain_device *dev = task->dev;
1316                 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1317                 struct mvs_info *mvi = mvi_dev->mvi_info;
1318
1319                 rc = mvs_find_tag(mvi, task, &tag);
1320                 if (rc == 0) {
1321                         rc = TMF_RESP_FUNC_FAILED;
1322                         return rc;
1323                 }
1324
1325                 rc = sas_query_task(task, tag);
1326                 switch (rc) {
1327                 /* The task is still in Lun, release it then */
1328                 case TMF_RESP_FUNC_SUCC:
1329                 /* The task is not in Lun or failed, reset the phy */
1330                 case TMF_RESP_FUNC_FAILED:
1331                 case TMF_RESP_FUNC_COMPLETE:
1332                         break;
1333                 }
1334         }
1335         mv_printk("%s:rc= %d\n", __func__, rc);
1336         return rc;
1337 }
1338
1339 /*  mandatory SAM-3, still need free task/slot info */
1340 int mvs_abort_task(struct sas_task *task)
1341 {
1342         struct domain_device *dev = task->dev;
1343         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1344         struct mvs_info *mvi;
1345         int rc = TMF_RESP_FUNC_FAILED;
1346         unsigned long flags;
1347         u32 tag;
1348
1349         if (!mvi_dev) {
1350                 mv_printk("Device has removed\n");
1351                 return TMF_RESP_FUNC_FAILED;
1352         }
1353
1354         mvi = mvi_dev->mvi_info;
1355
1356         spin_lock_irqsave(&task->task_state_lock, flags);
1357         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1358                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1359                 rc = TMF_RESP_FUNC_COMPLETE;
1360                 goto out;
1361         }
1362         spin_unlock_irqrestore(&task->task_state_lock, flags);
1363         mvi_dev->dev_status = MVS_DEV_EH;
1364         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1365                 rc = mvs_find_tag(mvi, task, &tag);
1366                 if (rc == 0) {
1367                         mv_printk("No such tag in %s\n", __func__);
1368                         rc = TMF_RESP_FUNC_FAILED;
1369                         return rc;
1370                 }
1371
1372                 rc = sas_abort_task(task, tag);
1373
1374                 /* if successful, clear the task and callback forwards.*/
1375                 if (rc == TMF_RESP_FUNC_COMPLETE) {
1376                         u32 slot_no;
1377                         struct mvs_slot_info *slot;
1378
1379                         if (task->lldd_task) {
1380                                 slot = task->lldd_task;
1381                                 slot_no = (u32) (slot - mvi->slot_info);
1382                                 spin_lock_irqsave(&mvi->lock, flags);
1383                                 mvs_slot_complete(mvi, slot_no, 1);
1384                                 spin_unlock_irqrestore(&mvi->lock, flags);
1385                         }
1386                 }
1387
1388         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1389                 task->task_proto & SAS_PROTOCOL_STP) {
1390                 if (SAS_SATA_DEV == dev->dev_type) {
1391                         struct mvs_slot_info *slot = task->lldd_task;
1392                         u32 slot_idx = (u32)(slot - mvi->slot_info);
1393                         mv_dprintk("mvs_abort_task() mvi=%p task=%p "
1394                                    "slot=%p slot_idx=x%x\n",
1395                                    mvi, task, slot, slot_idx);
1396                         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1397                         mvs_slot_task_free(mvi, task, slot, slot_idx);
1398                         rc = TMF_RESP_FUNC_COMPLETE;
1399                         goto out;
1400                 }
1401
1402         }
1403 out:
1404         if (rc != TMF_RESP_FUNC_COMPLETE)
1405                 mv_printk("%s:rc= %d\n", __func__, rc);
1406         return rc;
1407 }
1408
1409 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1410                         u32 slot_idx, int err)
1411 {
1412         struct mvs_device *mvi_dev = task->dev->lldd_dev;
1413         struct task_status_struct *tstat = &task->task_status;
1414         struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1415         int stat = SAM_STAT_GOOD;
1416
1417
1418         resp->frame_len = sizeof(struct dev_to_host_fis);
1419         memcpy(&resp->ending_fis[0],
1420                SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1421                sizeof(struct dev_to_host_fis));
1422         tstat->buf_valid_size = sizeof(*resp);
1423         if (unlikely(err)) {
1424                 if (unlikely(err & CMD_ISS_STPD))
1425                         stat = SAS_OPEN_REJECT;
1426                 else
1427                         stat = SAS_PROTO_RESPONSE;
1428        }
1429
1430         return stat;
1431 }
1432
1433 static void mvs_set_sense(u8 *buffer, int len, int d_sense,
1434                 int key, int asc, int ascq)
1435 {
1436         memset(buffer, 0, len);
1437
1438         if (d_sense) {
1439                 /* Descriptor format */
1440                 if (len < 4) {
1441                         mv_printk("Length %d of sense buffer too small to "
1442                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1443                 }
1444
1445                 buffer[0] = 0x72;               /* Response Code        */
1446                 if (len > 1)
1447                         buffer[1] = key;        /* Sense Key */
1448                 if (len > 2)
1449                         buffer[2] = asc;        /* ASC  */
1450                 if (len > 3)
1451                         buffer[3] = ascq;       /* ASCQ */
1452         } else {
1453                 if (len < 14) {
1454                         mv_printk("Length %d of sense buffer too small to "
1455                                 "fit sense %x:%x:%x", len, key, asc, ascq);
1456                 }
1457
1458                 buffer[0] = 0x70;               /* Response Code        */
1459                 if (len > 2)
1460                         buffer[2] = key;        /* Sense Key */
1461                 if (len > 7)
1462                         buffer[7] = 0x0a;       /* Additional Sense Length */
1463                 if (len > 12)
1464                         buffer[12] = asc;       /* ASC */
1465                 if (len > 13)
1466                         buffer[13] = ascq; /* ASCQ */
1467         }
1468
1469         return;
1470 }
1471
1472 static void mvs_fill_ssp_resp_iu(struct ssp_response_iu *iu,
1473                                 u8 key, u8 asc, u8 asc_q)
1474 {
1475         iu->datapres = SAS_DATAPRES_SENSE_DATA;
1476         iu->response_data_len = 0;
1477         iu->sense_data_len = 17;
1478         iu->status = 02;
1479         mvs_set_sense(iu->sense_data, 17, 0,
1480                         key, asc, asc_q);
1481 }
1482
1483 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1484                          u32 slot_idx)
1485 {
1486         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1487         int stat;
1488         u32 err_dw0 = le32_to_cpu(*(u32 *)slot->response);
1489         u32 err_dw1 = le32_to_cpu(*((u32 *)slot->response + 1));
1490         u32 tfs = 0;
1491         enum mvs_port_type type = PORT_TYPE_SAS;
1492
1493         if (err_dw0 & CMD_ISS_STPD)
1494                 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1495
1496         MVS_CHIP_DISP->command_active(mvi, slot_idx);
1497
1498         stat = SAM_STAT_CHECK_CONDITION;
1499         switch (task->task_proto) {
1500         case SAS_PROTOCOL_SSP:
1501         {
1502                 stat = SAS_ABORTED_TASK;
1503                 if ((err_dw0 & NO_DEST) || err_dw1 & bit(31)) {
1504                         struct ssp_response_iu *iu = slot->response +
1505                                 sizeof(struct mvs_err_info);
1506                         mvs_fill_ssp_resp_iu(iu, NOT_READY, 0x04, 01);
1507                         sas_ssp_task_response(mvi->dev, task, iu);
1508                         stat = SAM_STAT_CHECK_CONDITION;
1509                 }
1510                 if (err_dw1 & bit(31))
1511                         mv_printk("reuse same slot, retry command.\n");
1512                 break;
1513         }
1514         case SAS_PROTOCOL_SMP:
1515                 stat = SAM_STAT_CHECK_CONDITION;
1516                 break;
1517
1518         case SAS_PROTOCOL_SATA:
1519         case SAS_PROTOCOL_STP:
1520         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1521         {
1522                 task->ata_task.use_ncq = 0;
1523                 stat = SAS_PROTO_RESPONSE;
1524                 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1525         }
1526                 break;
1527         default:
1528                 break;
1529         }
1530
1531         return stat;
1532 }
1533
1534 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1535 {
1536         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1537         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1538         struct sas_task *task = slot->task;
1539         struct mvs_device *mvi_dev = NULL;
1540         struct task_status_struct *tstat;
1541         struct domain_device *dev;
1542         u32 aborted;
1543
1544         void *to;
1545         enum exec_status sts;
1546
1547         if (unlikely(!task || !task->lldd_task || !task->dev))
1548                 return -1;
1549
1550         tstat = &task->task_status;
1551         dev = task->dev;
1552         mvi_dev = dev->lldd_dev;
1553
1554         spin_lock(&task->task_state_lock);
1555         task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
1556         task->task_state_flags |= SAS_TASK_STATE_DONE;
1557         /* race condition*/
1558         aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1559         spin_unlock(&task->task_state_lock);
1560
1561         memset(tstat, 0, sizeof(*tstat));
1562         tstat->resp = SAS_TASK_COMPLETE;
1563
1564         if (unlikely(aborted)) {
1565                 tstat->stat = SAS_ABORTED_TASK;
1566                 if (mvi_dev && mvi_dev->running_req)
1567                         mvi_dev->running_req--;
1568                 if (sas_protocol_ata(task->task_proto))
1569                         mvs_free_reg_set(mvi, mvi_dev);
1570
1571                 mvs_slot_task_free(mvi, task, slot, slot_idx);
1572                 return -1;
1573         }
1574
1575         /* when no device attaching, go ahead and complete by error handling*/
1576         if (unlikely(!mvi_dev || flags)) {
1577                 if (!mvi_dev)
1578                         mv_dprintk("port has not device.\n");
1579                 tstat->stat = SAS_PHY_DOWN;
1580                 goto out;
1581         }
1582
1583         /*
1584          * error info record present; slot->response is 32 bit aligned but may
1585          * not be 64 bit aligned, so check for zero in two 32 bit reads
1586          */
1587         if (unlikely((rx_desc & RXQ_ERR)
1588                      && (*((u32 *)slot->response)
1589                          || *(((u32 *)slot->response) + 1)))) {
1590                 mv_dprintk("port %d slot %d rx_desc %X has error info"
1591                         "%016llX.\n", slot->port->sas_port.id, slot_idx,
1592                          rx_desc, get_unaligned_le64(slot->response));
1593                 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1594                 tstat->resp = SAS_TASK_COMPLETE;
1595                 goto out;
1596         }
1597
1598         switch (task->task_proto) {
1599         case SAS_PROTOCOL_SSP:
1600                 /* hw says status == 0, datapres == 0 */
1601                 if (rx_desc & RXQ_GOOD) {
1602                         tstat->stat = SAS_SAM_STAT_GOOD;
1603                         tstat->resp = SAS_TASK_COMPLETE;
1604                 }
1605                 /* response frame present */
1606                 else if (rx_desc & RXQ_RSP) {
1607                         struct ssp_response_iu *iu = slot->response +
1608                                                 sizeof(struct mvs_err_info);
1609                         sas_ssp_task_response(mvi->dev, task, iu);
1610                 } else
1611                         tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1612                 break;
1613
1614         case SAS_PROTOCOL_SMP: {
1615                         struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1616                         tstat->stat = SAS_SAM_STAT_GOOD;
1617                         to = kmap_atomic(sg_page(sg_resp));
1618                         memcpy(to + sg_resp->offset,
1619                                 slot->response + sizeof(struct mvs_err_info),
1620                                 sg_dma_len(sg_resp));
1621                         kunmap_atomic(to);
1622                         break;
1623                 }
1624
1625         case SAS_PROTOCOL_SATA:
1626         case SAS_PROTOCOL_STP:
1627         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1628                         tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1629                         break;
1630                 }
1631
1632         default:
1633                 tstat->stat = SAS_SAM_STAT_CHECK_CONDITION;
1634                 break;
1635         }
1636         if (!slot->port->port_attached) {
1637                 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1638                 tstat->stat = SAS_PHY_DOWN;
1639         }
1640
1641
1642 out:
1643         if (mvi_dev && mvi_dev->running_req) {
1644                 mvi_dev->running_req--;
1645                 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1646                         mvs_free_reg_set(mvi, mvi_dev);
1647         }
1648         mvs_slot_task_free(mvi, task, slot, slot_idx);
1649         sts = tstat->stat;
1650
1651         spin_unlock(&mvi->lock);
1652         if (task->task_done)
1653                 task->task_done(task);
1654
1655         spin_lock(&mvi->lock);
1656
1657         return sts;
1658 }
1659
1660 void mvs_do_release_task(struct mvs_info *mvi,
1661                 int phy_no, struct domain_device *dev)
1662 {
1663         u32 slot_idx;
1664         struct mvs_phy *phy;
1665         struct mvs_port *port;
1666         struct mvs_slot_info *slot, *slot2;
1667
1668         phy = &mvi->phy[phy_no];
1669         port = phy->port;
1670         if (!port)
1671                 return;
1672         /* clean cmpl queue in case request is already finished */
1673         mvs_int_rx(mvi, false);
1674
1675
1676
1677         list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1678                 struct sas_task *task;
1679                 slot_idx = (u32) (slot - mvi->slot_info);
1680                 task = slot->task;
1681
1682                 if (dev && task->dev != dev)
1683                         continue;
1684
1685                 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1686                         slot_idx, slot->slot_tag, task);
1687                 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1688
1689                 mvs_slot_complete(mvi, slot_idx, 1);
1690         }
1691 }
1692
1693 void mvs_release_task(struct mvs_info *mvi,
1694                       struct domain_device *dev)
1695 {
1696         int i, phyno[WIDE_PORT_MAX_PHY], num;
1697         num = mvs_find_dev_phyno(dev, phyno);
1698         for (i = 0; i < num; i++)
1699                 mvs_do_release_task(mvi, phyno[i], dev);
1700 }
1701
1702 static void mvs_phy_disconnected(struct mvs_phy *phy)
1703 {
1704         phy->phy_attached = 0;
1705         phy->att_dev_info = 0;
1706         phy->att_dev_sas_addr = 0;
1707 }
1708
1709 static void mvs_work_queue(struct work_struct *work)
1710 {
1711         struct delayed_work *dw = container_of(work, struct delayed_work, work);
1712         struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1713         struct mvs_info *mvi = mwq->mvi;
1714         unsigned long flags;
1715         u32 phy_no = (unsigned long) mwq->data;
1716         struct mvs_phy *phy = &mvi->phy[phy_no];
1717         struct asd_sas_phy *sas_phy = &phy->sas_phy;
1718
1719         spin_lock_irqsave(&mvi->lock, flags);
1720         if (mwq->handler & PHY_PLUG_EVENT) {
1721
1722                 if (phy->phy_event & PHY_PLUG_OUT) {
1723                         u32 tmp;
1724
1725                         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
1726                         phy->phy_event &= ~PHY_PLUG_OUT;
1727                         if (!(tmp & PHY_READY_MASK)) {
1728                                 sas_phy_disconnected(sas_phy);
1729                                 mvs_phy_disconnected(phy);
1730                                 sas_notify_phy_event(sas_phy,
1731                                         PHYE_LOSS_OF_SIGNAL, GFP_ATOMIC);
1732                                 mv_dprintk("phy%d Removed Device\n", phy_no);
1733                         } else {
1734                                 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1735                                 mvs_update_phyinfo(mvi, phy_no, 1);
1736                                 mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
1737                                 mvs_port_notify_formed(sas_phy, 0);
1738                                 mv_dprintk("phy%d Attached Device\n", phy_no);
1739                         }
1740                 }
1741         } else if (mwq->handler & EXP_BRCT_CHG) {
1742                 phy->phy_event &= ~EXP_BRCT_CHG;
1743                 sas_notify_port_event(sas_phy,
1744                                 PORTE_BROADCAST_RCVD, GFP_ATOMIC);
1745                 mv_dprintk("phy%d Got Broadcast Change\n", phy_no);
1746         }
1747         list_del(&mwq->entry);
1748         spin_unlock_irqrestore(&mvi->lock, flags);
1749         kfree(mwq);
1750 }
1751
1752 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
1753 {
1754         struct mvs_wq *mwq;
1755         int ret = 0;
1756
1757         mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
1758         if (mwq) {
1759                 mwq->mvi = mvi;
1760                 mwq->data = data;
1761                 mwq->handler = handler;
1762                 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
1763                 list_add_tail(&mwq->entry, &mvi->wq_list);
1764                 schedule_delayed_work(&mwq->work_q, HZ * 2);
1765         } else
1766                 ret = -ENOMEM;
1767
1768         return ret;
1769 }
1770
1771 static void mvs_sig_time_out(struct timer_list *t)
1772 {
1773         struct mvs_phy *phy = from_timer(phy, t, timer);
1774         struct mvs_info *mvi = phy->mvi;
1775         u8 phy_no;
1776
1777         for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
1778                 if (&mvi->phy[phy_no] == phy) {
1779                         mv_dprintk("Get signature time out, reset phy %d\n",
1780                                 phy_no+mvi->id*mvi->chip->n_phy);
1781                         MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_HARD_RESET);
1782                 }
1783         }
1784 }
1785
1786 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
1787 {
1788         u32 tmp;
1789         struct mvs_phy *phy = &mvi->phy[phy_no];
1790
1791         phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
1792         MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
1793         mv_dprintk("phy %d ctrl sts=0x%08X.\n", phy_no+mvi->id*mvi->chip->n_phy,
1794                 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
1795         mv_dprintk("phy %d irq sts = 0x%08X\n", phy_no+mvi->id*mvi->chip->n_phy,
1796                 phy->irq_status);
1797
1798         /*
1799         * events is port event now ,
1800         * we need check the interrupt status which belongs to per port.
1801         */
1802
1803         if (phy->irq_status & PHYEV_DCDR_ERR) {
1804                 mv_dprintk("phy %d STP decoding error.\n",
1805                 phy_no + mvi->id*mvi->chip->n_phy);
1806         }
1807
1808         if (phy->irq_status & PHYEV_POOF) {
1809                 mdelay(500);
1810                 if (!(phy->phy_event & PHY_PLUG_OUT)) {
1811                         int dev_sata = phy->phy_type & PORT_TYPE_SATA;
1812                         int ready;
1813                         mvs_do_release_task(mvi, phy_no, NULL);
1814                         phy->phy_event |= PHY_PLUG_OUT;
1815                         MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
1816                         mvs_handle_event(mvi,
1817                                 (void *)(unsigned long)phy_no,
1818                                 PHY_PLUG_EVENT);
1819                         ready = mvs_is_phy_ready(mvi, phy_no);
1820                         if (ready || dev_sata) {
1821                                 if (MVS_CHIP_DISP->stp_reset)
1822                                         MVS_CHIP_DISP->stp_reset(mvi,
1823                                                         phy_no);
1824                                 else
1825                                         MVS_CHIP_DISP->phy_reset(mvi,
1826                                                         phy_no, MVS_SOFT_RESET);
1827                                 return;
1828                         }
1829                 }
1830         }
1831
1832         if (phy->irq_status & PHYEV_COMWAKE) {
1833                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
1834                 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
1835                                         tmp | PHYEV_SIG_FIS);
1836                 if (phy->timer.function == NULL) {
1837                         phy->timer.function = mvs_sig_time_out;
1838                         phy->timer.expires = jiffies + 5*HZ;
1839                         add_timer(&phy->timer);
1840                 }
1841         }
1842         if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
1843                 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
1844                 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
1845                 if (phy->phy_status) {
1846                         mdelay(10);
1847                         MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
1848                         if (phy->phy_type & PORT_TYPE_SATA) {
1849                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(
1850                                                 mvi, phy_no);
1851                                 tmp &= ~PHYEV_SIG_FIS;
1852                                 MVS_CHIP_DISP->write_port_irq_mask(mvi,
1853                                                         phy_no, tmp);
1854                         }
1855                         mvs_update_phyinfo(mvi, phy_no, 0);
1856                         if (phy->phy_type & PORT_TYPE_SAS) {
1857                                 MVS_CHIP_DISP->phy_reset(mvi, phy_no, MVS_PHY_TUNE);
1858                                 mdelay(10);
1859                         }
1860
1861                         mvs_bytes_dmaed(mvi, phy_no, GFP_ATOMIC);
1862                         /* whether driver is going to handle hot plug */
1863                         if (phy->phy_event & PHY_PLUG_OUT) {
1864                                 mvs_port_notify_formed(&phy->sas_phy, 0);
1865                                 phy->phy_event &= ~PHY_PLUG_OUT;
1866                         }
1867                 } else {
1868                         mv_dprintk("plugin interrupt but phy%d is gone\n",
1869                                 phy_no + mvi->id*mvi->chip->n_phy);
1870                 }
1871         } else if (phy->irq_status & PHYEV_BROAD_CH) {
1872                 mv_dprintk("phy %d broadcast change.\n",
1873                         phy_no + mvi->id*mvi->chip->n_phy);
1874                 mvs_handle_event(mvi, (void *)(unsigned long)phy_no,
1875                                 EXP_BRCT_CHG);
1876         }
1877 }
1878
1879 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
1880 {
1881         u32 rx_prod_idx, rx_desc;
1882         bool attn = false;
1883
1884         /* the first dword in the RX ring is special: it contains
1885          * a mirror of the hardware's RX producer index, so that
1886          * we don't have to stall the CPU reading that register.
1887          * The actual RX ring is offset by one dword, due to this.
1888          */
1889         rx_prod_idx = mvi->rx_cons;
1890         mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
1891         if (mvi->rx_cons == 0xfff)      /* h/w hasn't touched RX ring yet */
1892                 return 0;
1893
1894         /* The CMPL_Q may come late, read from register and try again
1895         * note: if coalescing is enabled,
1896         * it will need to read from register every time for sure
1897         */
1898         if (unlikely(mvi->rx_cons == rx_prod_idx))
1899                 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
1900
1901         if (mvi->rx_cons == rx_prod_idx)
1902                 return 0;
1903
1904         while (mvi->rx_cons != rx_prod_idx) {
1905                 /* increment our internal RX consumer pointer */
1906                 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
1907                 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
1908
1909                 if (likely(rx_desc & RXQ_DONE))
1910                         mvs_slot_complete(mvi, rx_desc, 0);
1911                 if (rx_desc & RXQ_ATTN) {
1912                         attn = true;
1913                 } else if (rx_desc & RXQ_ERR) {
1914                         if (!(rx_desc & RXQ_DONE))
1915                                 mvs_slot_complete(mvi, rx_desc, 0);
1916                 } else if (rx_desc & RXQ_SLOT_RESET) {
1917                         mvs_slot_free(mvi, rx_desc);
1918                 }
1919         }
1920
1921         if (attn && self_clear)
1922                 MVS_CHIP_DISP->int_full(mvi);
1923         return 0;
1924 }
1925
1926 int mvs_gpio_write(struct sas_ha_struct *sha, u8 reg_type, u8 reg_index,
1927                         u8 reg_count, u8 *write_data)
1928 {
1929         struct mvs_prv_info *mvs_prv = sha->lldd_ha;
1930         struct mvs_info *mvi = mvs_prv->mvi[0];
1931
1932         if (MVS_CHIP_DISP->gpio_write) {
1933                 return MVS_CHIP_DISP->gpio_write(mvs_prv, reg_type,
1934                         reg_index, reg_count, write_data);
1935         }
1936
1937         return -ENOSYS;
1938 }