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  *
   7  * This file is licensed under GPLv2.
   8  *
   9  * This program is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU General Public License as
  11  * published by the Free Software Foundation; version 2 of the
  12  * License.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  22  * USA
  23 */
  24
  25 #include "mv_sas.h"
  26
  27 static int mvs_find_tag(struct mvs_info *mvi, struct sas_task *task, u32 *tag)
  28 {
  29         if (task->lldd_task) {
  30                 struct mvs_slot_info *slot;
  31                 slot = task->lldd_task;
  32                 *tag = slot->slot_tag;
  33                 return 1;
  34         }
  35         return 0;
  36 }
  37
  38 void mvs_tag_clear(struct mvs_info *mvi, u32 tag)
  39 {
  40         void *bitmap = &mvi->tags;
  41         clear_bit(tag, bitmap);
  42 }
  43
  44 void mvs_tag_free(struct mvs_info *mvi, u32 tag)
  45 {
  46         mvs_tag_clear(mvi, tag);
  47 }
  48
  49 void mvs_tag_set(struct mvs_info *mvi, unsigned int tag)
  50 {
  51         void *bitmap = &mvi->tags;
  52         set_bit(tag, bitmap);
  53 }
  54
  55 inline int mvs_tag_alloc(struct mvs_info *mvi, u32 *tag_out)
  56 {
  57         unsigned int index, tag;
  58         void *bitmap = &mvi->tags;
  59
  60         index = find_first_zero_bit(bitmap, mvi->tags_num);
  61         tag = index;
  62         if (tag >= mvi->tags_num)
  63                 return -SAS_QUEUE_FULL;
  64         mvs_tag_set(mvi, tag);
  65         *tag_out = tag;
  66         return 0;
  67 }
  68
  69 void mvs_tag_init(struct mvs_info *mvi)
  70 {
  71         int i;
  72         for (i = 0; i < mvi->tags_num; ++i)
  73                 mvs_tag_clear(mvi, i);
  74 }
  75
  76 void mvs_hexdump(u32 size, u8 *data, u32 baseaddr)
  77 {
  78         u32 i;
  79         u32 run;
  80         u32 offset;
  81
  82         offset = 0;
  83         while (size) {
  84                 printk(KERN_DEBUG"%08X : ", baseaddr + offset);
  85                 if (size >= 16)
  86                         run = 16;
  87                 else
  88                         run = size;
  89                 size -= run;
  90                 for (i = 0; i < 16; i++) {
  91                         if (i < run)
  92                                 printk(KERN_DEBUG"%02X ", (u32)data[i]);
  93                         else
  94                                 printk(KERN_DEBUG"   ");
  95                 }
  96                 printk(KERN_DEBUG": ");
  97                 for (i = 0; i < run; i++)
  98                         printk(KERN_DEBUG"%c",
  99                                 isalnum(data[i]) ? data[i] : '.');
 100                 printk(KERN_DEBUG"\n");
 101                 data = &data[16];
 102                 offset += run;
 103         }
 104         printk(KERN_DEBUG"\n");
 105 }
 106
 107 #if (_MV_DUMP > 1)
 108 static void mvs_hba_sb_dump(struct mvs_info *mvi, u32 tag,
 109                                    enum sas_protocol proto)
 110 {
 111         u32 offset;
 112         struct mvs_slot_info *slot = &mvi->slot_info[tag];
 113
 114         offset = slot->cmd_size + MVS_OAF_SZ +
 115             MVS_CHIP_DISP->prd_size() * slot->n_elem;
 116         dev_printk(KERN_DEBUG, mvi->dev, "+---->Status buffer[%d] :\n",
 117                         tag);
 118         mvs_hexdump(32, (u8 *) slot->response,
 119                     (u32) slot->buf_dma + offset);
 120 }
 121 #endif
 122
 123 static void mvs_hba_memory_dump(struct mvs_info *mvi, u32 tag,
 124                                 enum sas_protocol proto)
 125 {
 126 #if (_MV_DUMP > 1)
 127         u32 sz, w_ptr;
 128         u64 addr;
 129         struct mvs_slot_info *slot = &mvi->slot_info[tag];
 130
 131         /*Delivery Queue */
 132         sz = MVS_CHIP_SLOT_SZ;
 133         w_ptr = slot->tx;
 134         addr = mvi->tx_dma;
 135         dev_printk(KERN_DEBUG, mvi->dev,
 136                 "Delivery Queue Size=%04d , WRT_PTR=%04X\n", sz, w_ptr);
 137         dev_printk(KERN_DEBUG, mvi->dev,
 138                 "Delivery Queue Base Address=0x%llX (PA)"
 139                 "(tx_dma=0x%llX), Entry=%04d\n",
 140                 addr, (unsigned long long)mvi->tx_dma, w_ptr);
 141         mvs_hexdump(sizeof(u32), (u8 *)(&mvi->tx[mvi->tx_prod]),
 142                         (u32) mvi->tx_dma + sizeof(u32) * w_ptr);
 143         /*Command List */
 144         addr = mvi->slot_dma;
 145         dev_printk(KERN_DEBUG, mvi->dev,
 146                 "Command List Base Address=0x%llX (PA)"
 147                 "(slot_dma=0x%llX), Header=%03d\n",
 148                 addr, (unsigned long long)slot->buf_dma, tag);
 149         dev_printk(KERN_DEBUG, mvi->dev, "Command Header[%03d]:\n", tag);
 150         /*mvs_cmd_hdr */
 151         mvs_hexdump(sizeof(struct mvs_cmd_hdr), (u8 *)(&mvi->slot[tag]),
 152                 (u32) mvi->slot_dma + tag * sizeof(struct mvs_cmd_hdr));
 153         /*1.command table area */
 154         dev_printk(KERN_DEBUG, mvi->dev, "+---->Command Table :\n");
 155         mvs_hexdump(slot->cmd_size, (u8 *) slot->buf, (u32) slot->buf_dma);
 156         /*2.open address frame area */
 157         dev_printk(KERN_DEBUG, mvi->dev, "+---->Open Address Frame :\n");
 158         mvs_hexdump(MVS_OAF_SZ, (u8 *) slot->buf + slot->cmd_size,
 159                                 (u32) slot->buf_dma + slot->cmd_size);
 160         /*3.status buffer */
 161         mvs_hba_sb_dump(mvi, tag, proto);
 162         /*4.PRD table */
 163         dev_printk(KERN_DEBUG, mvi->dev, "+---->PRD table :\n");
 164         mvs_hexdump(MVS_CHIP_DISP->prd_size() * slot->n_elem,
 165                 (u8 *) slot->buf + slot->cmd_size + MVS_OAF_SZ,
 166                 (u32) slot->buf_dma + slot->cmd_size + MVS_OAF_SZ);
 167 #endif
 168 }
 169
 170 static void mvs_hba_cq_dump(struct mvs_info *mvi)
 171 {
 172 #if (_MV_DUMP > 2)
 173         u64 addr;
 174         void __iomem *regs = mvi->regs;
 175         u32 entry = mvi->rx_cons + 1;
 176         u32 rx_desc = le32_to_cpu(mvi->rx[entry]);
 177
 178         /*Completion Queue */
 179         addr = mr32(RX_HI) << 16 << 16 | mr32(RX_LO);
 180         dev_printk(KERN_DEBUG, mvi->dev, "Completion Task = 0x%p\n",
 181                    mvi->slot_info[rx_desc & RXQ_SLOT_MASK].task);
 182         dev_printk(KERN_DEBUG, mvi->dev,
 183                 "Completion List Base Address=0x%llX (PA), "
 184                 "CQ_Entry=%04d, CQ_WP=0x%08X\n",
 185                 addr, entry - 1, mvi->rx[0]);
 186         mvs_hexdump(sizeof(u32), (u8 *)(&rx_desc),
 187                     mvi->rx_dma + sizeof(u32) * entry);
 188 #endif
 189 }
 190
 191 void mvs_get_sas_addr(void *buf, u32 buflen)
 192 {
 193         /*memcpy(buf, "\x50\x05\x04\x30\x11\xab\x64\x40", 8);*/
 194 }
 195
 196 struct mvs_info *mvs_find_dev_mvi(struct domain_device *dev)
 197 {
 198         unsigned long i = 0, j = 0, hi = 0;
 199         struct sas_ha_struct *sha = dev->port->ha;
 200         struct mvs_info *mvi = NULL;
 201         struct asd_sas_phy *phy;
 202
 203         while (sha->sas_port[i]) {
 204                 if (sha->sas_port[i] == dev->port) {
 205                         phy =  container_of(sha->sas_port[i]->phy_list.next,
 206                                 struct asd_sas_phy, port_phy_el);
 207                         j = 0;
 208                         while (sha->sas_phy[j]) {
 209                                 if (sha->sas_phy[j] == phy)
 210                                         break;
 211                                 j++;
 212                         }
 213                         break;
 214                 }
 215                 i++;
 216         }
 217         hi = j/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
 218         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
 219
 220         return mvi;
 221
 222 }
 223
 224 /* FIXME */
 225 int mvs_find_dev_phyno(struct domain_device *dev, int *phyno)
 226 {
 227         unsigned long i = 0, j = 0, n = 0, num = 0;
 228         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
 229         struct mvs_info *mvi = mvi_dev->mvi_info;
 230         struct sas_ha_struct *sha = dev->port->ha;
 231
 232         while (sha->sas_port[i]) {
 233                 if (sha->sas_port[i] == dev->port) {
 234                         struct asd_sas_phy *phy;
 235                         list_for_each_entry(phy,
 236                                 &sha->sas_port[i]->phy_list, port_phy_el) {
 237                                 j = 0;
 238                                 while (sha->sas_phy[j]) {
 239                                         if (sha->sas_phy[j] == phy)
 240                                                 break;
 241                                         j++;
 242                                 }
 243                                 phyno[n] = (j >= mvi->chip->n_phy) ?
 244                                         (j - mvi->chip->n_phy) : j;
 245                                 num++;
 246                                 n++;
 247                         }
 248                         break;
 249                 }
 250                 i++;
 251         }
 252         return num;
 253 }
 254
 255 static inline void mvs_free_reg_set(struct mvs_info *mvi,
 256                                 struct mvs_device *dev)
 257 {
 258         if (!dev) {
 259                 mv_printk("device has been free.\n");
 260                 return;
 261         }
 262         if (dev->taskfileset == MVS_ID_NOT_MAPPED)
 263                 return;
 264         MVS_CHIP_DISP->free_reg_set(mvi, &dev->taskfileset);
 265 }
 266
 267 static inline u8 mvs_assign_reg_set(struct mvs_info *mvi,
 268                                 struct mvs_device *dev)
 269 {
 270         if (dev->taskfileset != MVS_ID_NOT_MAPPED)
 271                 return 0;
 272         return MVS_CHIP_DISP->assign_reg_set(mvi, &dev->taskfileset);
 273 }
 274
 275 void mvs_phys_reset(struct mvs_info *mvi, u32 phy_mask, int hard)
 276 {
 277         u32 no;
 278         for_each_phy(phy_mask, phy_mask, no) {
 279                 if (!(phy_mask & 1))
 280                         continue;
 281                 MVS_CHIP_DISP->phy_reset(mvi, no, hard);
 282         }
 283 }
 284
 285 /* FIXME: locking? */
 286 int mvs_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 287                         void *funcdata)
 288 {
 289         int rc = 0, phy_id = sas_phy->id;
 290         u32 tmp, i = 0, hi;
 291         struct sas_ha_struct *sha = sas_phy->ha;
 292         struct mvs_info *mvi = NULL;
 293
 294         while (sha->sas_phy[i]) {
 295                 if (sha->sas_phy[i] == sas_phy)
 296                         break;
 297                 i++;
 298         }
 299         hi = i/((struct mvs_prv_info *)sha->lldd_ha)->n_phy;
 300         mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[hi];
 301
 302         switch (func) {
 303         case PHY_FUNC_SET_LINK_RATE:
 304                 MVS_CHIP_DISP->phy_set_link_rate(mvi, phy_id, funcdata);
 305                 break;
 306
 307         case PHY_FUNC_HARD_RESET:
 308                 tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_id);
 309                 if (tmp & PHY_RST_HARD)
 310                         break;
 311                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, 1);
 312                 break;
 313
 314         case PHY_FUNC_LINK_RESET:
 315                 MVS_CHIP_DISP->phy_enable(mvi, phy_id);
 316                 MVS_CHIP_DISP->phy_reset(mvi, phy_id, 0);
 317                 break;
 318
 319         case PHY_FUNC_DISABLE:
 320                 MVS_CHIP_DISP->phy_disable(mvi, phy_id);
 321                 break;
 322         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 323         default:
 324                 rc = -EOPNOTSUPP;
 325         }
 326         msleep(200);
 327         return rc;
 328 }
 329
 330 void __devinit mvs_set_sas_addr(struct mvs_info *mvi, int port_id,
 331                                 u32 off_lo, u32 off_hi, u64 sas_addr)
 332 {
 333         u32 lo = (u32)sas_addr;
 334         u32 hi = (u32)(sas_addr>>32);
 335
 336         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_lo);
 337         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, lo);
 338         MVS_CHIP_DISP->write_port_cfg_addr(mvi, port_id, off_hi);
 339         MVS_CHIP_DISP->write_port_cfg_data(mvi, port_id, hi);
 340 }
 341
 342 static void mvs_bytes_dmaed(struct mvs_info *mvi, int i)
 343 {
 344         struct mvs_phy *phy = &mvi->phy[i];
 345         struct asd_sas_phy *sas_phy = &phy->sas_phy;
 346         struct sas_ha_struct *sas_ha;
 347         if (!phy->phy_attached)
 348                 return;
 349
 350         if (!(phy->att_dev_info & PORT_DEV_TRGT_MASK)
 351                 && phy->phy_type & PORT_TYPE_SAS) {
 352                 return;
 353         }
 354
 355         sas_ha = mvi->sas;
 356         sas_ha->notify_phy_event(sas_phy, PHYE_OOB_DONE);
 357
 358         if (sas_phy->phy) {
 359                 struct sas_phy *sphy = sas_phy->phy;
 360
 361                 sphy->negotiated_linkrate = sas_phy->linkrate;
 362                 sphy->minimum_linkrate = phy->minimum_linkrate;
 363                 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS;
 364                 sphy->maximum_linkrate = phy->maximum_linkrate;
 365                 sphy->maximum_linkrate_hw = MVS_CHIP_DISP->phy_max_link_rate();
 366         }
 367
 368         if (phy->phy_type & PORT_TYPE_SAS) {
 369                 struct sas_identify_frame *id;
 370
 371                 id = (struct sas_identify_frame *)phy->frame_rcvd;
 372                 id->dev_type = phy->identify.device_type;
 373                 id->initiator_bits = SAS_PROTOCOL_ALL;
 374                 id->target_bits = phy->identify.target_port_protocols;
 375         } else if (phy->phy_type & PORT_TYPE_SATA) {
 376                 /*Nothing*/
 377         }
 378         mv_dprintk("phy %d byte dmaded.\n", i + mvi->id * mvi->chip->n_phy);
 379
 380         sas_phy->frame_rcvd_size = phy->frame_rcvd_size;
 381
 382         mvi->sas->notify_port_event(sas_phy,
 383                                    PORTE_BYTES_DMAED);
 384 }
 385
 386 int mvs_slave_alloc(struct scsi_device *scsi_dev)
 387 {
 388         struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
 389         if (dev_is_sata(dev)) {
 390                 /* We don't need to rescan targets
 391                  * if REPORT_LUNS request is failed
 392                  */
 393                 if (scsi_dev->lun > 0)
 394                         return -ENXIO;
 395                 scsi_dev->tagged_supported = 1;
 396         }
 397
 398         return sas_slave_alloc(scsi_dev);
 399 }
 400
 401 int mvs_slave_configure(struct scsi_device *sdev)
 402 {
 403         struct domain_device *dev = sdev_to_domain_dev(sdev);
 404         int ret = sas_slave_configure(sdev);
 405
 406         if (ret)
 407                 return ret;
 408         if (dev_is_sata(dev)) {
 409                 /* may set PIO mode */
 410         #if MV_DISABLE_NCQ
 411                 struct ata_port *ap = dev->sata_dev.ap;
 412                 struct ata_device *adev = ap->link.device;
 413                 adev->flags |= ATA_DFLAG_NCQ_OFF;
 414                 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1);
 415         #endif
 416         }
 417         return 0;
 418 }
 419
 420 void mvs_scan_start(struct Scsi_Host *shost)
 421 {
 422         int i, j;
 423         unsigned short core_nr;
 424         struct mvs_info *mvi;
 425         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 426
 427         core_nr = ((struct mvs_prv_info *)sha->lldd_ha)->n_host;
 428
 429         for (j = 0; j < core_nr; j++) {
 430                 mvi = ((struct mvs_prv_info *)sha->lldd_ha)->mvi[j];
 431                 for (i = 0; i < mvi->chip->n_phy; ++i)
 432                         mvs_bytes_dmaed(mvi, i);
 433         }
 434 }
 435
 436 int mvs_scan_finished(struct Scsi_Host *shost, unsigned long time)
 437 {
 438         /* give the phy enabling interrupt event time to come in (1s
 439          * is empirically about all it takes) */
 440         if (time < HZ)
 441                 return 0;
 442         /* Wait for discovery to finish */
 443         scsi_flush_work(shost);
 444         return 1;
 445 }
 446
 447 static int mvs_task_prep_smp(struct mvs_info *mvi,
 448                              struct mvs_task_exec_info *tei)
 449 {
 450         int elem, rc, i;
 451         struct sas_task *task = tei->task;
 452         struct mvs_cmd_hdr *hdr = tei->hdr;
 453         struct domain_device *dev = task->dev;
 454         struct asd_sas_port *sas_port = dev->port;
 455         struct scatterlist *sg_req, *sg_resp;
 456         u32 req_len, resp_len, tag = tei->tag;
 457         void *buf_tmp;
 458         u8 *buf_oaf;
 459         dma_addr_t buf_tmp_dma;
 460         void *buf_prd;
 461         struct mvs_slot_info *slot = &mvi->slot_info[tag];
 462         u32 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 463 #if _MV_DUMP
 464         u8 *buf_cmd;
 465         void *from;
 466 #endif
 467         /*
 468          * DMA-map SMP request, response buffers
 469          */
 470         sg_req = &task->smp_task.smp_req;
 471         elem = dma_map_sg(mvi->dev, sg_req, 1, PCI_DMA_TODEVICE);
 472         if (!elem)
 473                 return -ENOMEM;
 474         req_len = sg_dma_len(sg_req);
 475
 476         sg_resp = &task->smp_task.smp_resp;
 477         elem = dma_map_sg(mvi->dev, sg_resp, 1, PCI_DMA_FROMDEVICE);
 478         if (!elem) {
 479                 rc = -ENOMEM;
 480                 goto err_out;
 481         }
 482         resp_len = SB_RFB_MAX;
 483
 484         /* must be in dwords */
 485         if ((req_len & 0x3) || (resp_len & 0x3)) {
 486                 rc = -EINVAL;
 487                 goto err_out_2;
 488         }
 489
 490         /*
 491          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 492          */
 493
 494         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ***** */
 495         buf_tmp = slot->buf;
 496         buf_tmp_dma = slot->buf_dma;
 497
 498 #if _MV_DUMP
 499         buf_cmd = buf_tmp;
 500         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 501         buf_tmp += req_len;
 502         buf_tmp_dma += req_len;
 503         slot->cmd_size = req_len;
 504 #else
 505         hdr->cmd_tbl = cpu_to_le64(sg_dma_address(sg_req));
 506 #endif
 507
 508         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 509         buf_oaf = buf_tmp;
 510         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 511
 512         buf_tmp += MVS_OAF_SZ;
 513         buf_tmp_dma += MVS_OAF_SZ;
 514
 515         /* region 3: PRD table *********************************** */
 516         buf_prd = buf_tmp;
 517         if (tei->n_elem)
 518                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 519         else
 520                 hdr->prd_tbl = 0;
 521
 522         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 523         buf_tmp += i;
 524         buf_tmp_dma += i;
 525
 526         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 527         slot->response = buf_tmp;
 528         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 529         if (mvi->flags & MVF_FLAG_SOC)
 530                 hdr->reserved[0] = 0;
 531
 532         /*
 533          * Fill in TX ring and command slot header
 534          */
 535         slot->tx = mvi->tx_prod;
 536         mvi->tx[mvi->tx_prod] = cpu_to_le32((TXQ_CMD_SMP << TXQ_CMD_SHIFT) |
 537                                         TXQ_MODE_I | tag |
 538                                         (sas_port->phy_mask << TXQ_PHY_SHIFT));
 539
 540         hdr->flags |= flags;
 541         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | ((req_len - 4) / 4));
 542         hdr->tags = cpu_to_le32(tag);
 543         hdr->data_len = 0;
 544
 545         /* generate open address frame hdr (first 12 bytes) */
 546         /* initiator, SMP, ftype 1h */
 547         buf_oaf[0] = (1 << 7) | (PROTOCOL_SMP << 4) | 0x01;
 548         buf_oaf[1] = dev->linkrate & 0xf;
 549         *(u16 *)(buf_oaf + 2) = 0xFFFF;         /* SAS SPEC */
 550         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 551
 552         /* fill in PRD (scatter/gather) table, if any */
 553         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 554
 555 #if _MV_DUMP
 556         /* copy cmd table */
 557         from = kmap_atomic(sg_page(sg_req), KM_IRQ0);
 558         memcpy(buf_cmd, from + sg_req->offset, req_len);
 559         kunmap_atomic(from, KM_IRQ0);
 560 #endif
 561         return 0;
 562
 563 err_out_2:
 564         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_resp, 1,
 565                      PCI_DMA_FROMDEVICE);
 566 err_out:
 567         dma_unmap_sg(mvi->dev, &tei->task->smp_task.smp_req, 1,
 568                      PCI_DMA_TODEVICE);
 569         return rc;
 570 }
 571
 572 static u32 mvs_get_ncq_tag(struct sas_task *task, u32 *tag)
 573 {
 574         struct ata_queued_cmd *qc = task->uldd_task;
 575
 576         if (qc) {
 577                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 578                         qc->tf.command == ATA_CMD_FPDMA_READ) {
 579                         *tag = qc->tag;
 580                         return 1;
 581                 }
 582         }
 583
 584         return 0;
 585 }
 586
 587 static int mvs_task_prep_ata(struct mvs_info *mvi,
 588                              struct mvs_task_exec_info *tei)
 589 {
 590         struct sas_task *task = tei->task;
 591         struct domain_device *dev = task->dev;
 592         struct mvs_device *mvi_dev = dev->lldd_dev;
 593         struct mvs_cmd_hdr *hdr = tei->hdr;
 594         struct asd_sas_port *sas_port = dev->port;
 595         struct mvs_slot_info *slot;
 596         void *buf_prd;
 597         u32 tag = tei->tag, hdr_tag;
 598         u32 flags, del_q;
 599         void *buf_tmp;
 600         u8 *buf_cmd, *buf_oaf;
 601         dma_addr_t buf_tmp_dma;
 602         u32 i, req_len, resp_len;
 603         const u32 max_resp_len = SB_RFB_MAX;
 604
 605         if (mvs_assign_reg_set(mvi, mvi_dev) == MVS_ID_NOT_MAPPED) {
 606                 mv_dprintk("Have not enough regiset for dev %d.\n",
 607                         mvi_dev->device_id);
 608                 return -EBUSY;
 609         }
 610         slot = &mvi->slot_info[tag];
 611         slot->tx = mvi->tx_prod;
 612         del_q = TXQ_MODE_I | tag |
 613                 (TXQ_CMD_STP << TXQ_CMD_SHIFT) |
 614                 (sas_port->phy_mask << TXQ_PHY_SHIFT) |
 615                 (mvi_dev->taskfileset << TXQ_SRS_SHIFT);
 616         mvi->tx[mvi->tx_prod] = cpu_to_le32(del_q);
 617
 618 #ifndef DISABLE_HOTPLUG_DMA_FIX
 619         if (task->data_dir == DMA_FROM_DEVICE)
 620                 flags = (MVS_CHIP_DISP->prd_count() << MCH_PRD_LEN_SHIFT);
 621         else
 622                 flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 623 #else
 624         flags = (tei->n_elem << MCH_PRD_LEN_SHIFT);
 625 #endif
 626         if (task->ata_task.use_ncq)
 627                 flags |= MCH_FPDMA;
 628         if (dev->sata_dev.command_set == ATAPI_COMMAND_SET) {
 629                 if (task->ata_task.fis.command != ATA_CMD_ID_ATAPI)
 630                         flags |= MCH_ATAPI;
 631         }
 632
 633         /* FIXME: fill in port multiplier number */
 634
 635         hdr->flags = cpu_to_le32(flags);
 636
 637         /* FIXME: the low order order 5 bits for the TAG if enable NCQ */
 638         if (task->ata_task.use_ncq && mvs_get_ncq_tag(task, &hdr_tag))
 639                 task->ata_task.fis.sector_count |= (u8) (hdr_tag << 3);
 640         else
 641                 hdr_tag = tag;
 642
 643         hdr->tags = cpu_to_le32(hdr_tag);
 644
 645         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 646
 647         /*
 648          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 649          */
 650
 651         /* region 1: command table area (MVS_ATA_CMD_SZ bytes) ************** */
 652         buf_cmd = buf_tmp = slot->buf;
 653         buf_tmp_dma = slot->buf_dma;
 654
 655         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 656
 657         buf_tmp += MVS_ATA_CMD_SZ;
 658         buf_tmp_dma += MVS_ATA_CMD_SZ;
 659 #if _MV_DUMP
 660         slot->cmd_size = MVS_ATA_CMD_SZ;
 661 #endif
 662
 663         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 664         /* used for STP.  unused for SATA? */
 665         buf_oaf = buf_tmp;
 666         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 667
 668         buf_tmp += MVS_OAF_SZ;
 669         buf_tmp_dma += MVS_OAF_SZ;
 670
 671         /* region 3: PRD table ********************************************* */
 672         buf_prd = buf_tmp;
 673
 674         if (tei->n_elem)
 675                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 676         else
 677                 hdr->prd_tbl = 0;
 678         i = MVS_CHIP_DISP->prd_size() * MVS_CHIP_DISP->prd_count();
 679
 680         buf_tmp += i;
 681         buf_tmp_dma += i;
 682
 683         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 684         /* FIXME: probably unused, for SATA.  kept here just in case
 685          * we get a STP/SATA error information record
 686          */
 687         slot->response = buf_tmp;
 688         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 689         if (mvi->flags & MVF_FLAG_SOC)
 690                 hdr->reserved[0] = 0;
 691
 692         req_len = sizeof(struct host_to_dev_fis);
 693         resp_len = MVS_SLOT_BUF_SZ - MVS_ATA_CMD_SZ -
 694             sizeof(struct mvs_err_info) - i;
 695
 696         /* request, response lengths */
 697         resp_len = min(resp_len, max_resp_len);
 698         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 699
 700         if (likely(!task->ata_task.device_control_reg_update))
 701                 task->ata_task.fis.flags |= 0x80; /* C=1: update ATA cmd reg */
 702         /* fill in command FIS and ATAPI CDB */
 703         memcpy(buf_cmd, &task->ata_task.fis, sizeof(struct host_to_dev_fis));
 704         if (dev->sata_dev.command_set == ATAPI_COMMAND_SET)
 705                 memcpy(buf_cmd + STP_ATAPI_CMD,
 706                         task->ata_task.atapi_packet, 16);
 707
 708         /* generate open address frame hdr (first 12 bytes) */
 709         /* initiator, STP, ftype 1h */
 710         buf_oaf[0] = (1 << 7) | (PROTOCOL_STP << 4) | 0x1;
 711         buf_oaf[1] = dev->linkrate & 0xf;
 712         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 713         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 714
 715         /* fill in PRD (scatter/gather) table, if any */
 716         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 717 #ifndef DISABLE_HOTPLUG_DMA_FIX
 718         if (task->data_dir == DMA_FROM_DEVICE)
 719                 MVS_CHIP_DISP->dma_fix(mvi->bulk_buffer_dma,
 720                                 TRASH_BUCKET_SIZE, tei->n_elem, buf_prd);
 721 #endif
 722         return 0;
 723 }
 724
 725 static int mvs_task_prep_ssp(struct mvs_info *mvi,
 726                              struct mvs_task_exec_info *tei, int is_tmf,
 727                              struct mvs_tmf_task *tmf)
 728 {
 729         struct sas_task *task = tei->task;
 730         struct mvs_cmd_hdr *hdr = tei->hdr;
 731         struct mvs_port *port = tei->port;
 732         struct domain_device *dev = task->dev;
 733         struct mvs_device *mvi_dev = dev->lldd_dev;
 734         struct asd_sas_port *sas_port = dev->port;
 735         struct mvs_slot_info *slot;
 736         void *buf_prd;
 737         struct ssp_frame_hdr *ssp_hdr;
 738         void *buf_tmp;
 739         u8 *buf_cmd, *buf_oaf, fburst = 0;
 740         dma_addr_t buf_tmp_dma;
 741         u32 flags;
 742         u32 resp_len, req_len, i, tag = tei->tag;
 743         const u32 max_resp_len = SB_RFB_MAX;
 744         u32 phy_mask;
 745
 746         slot = &mvi->slot_info[tag];
 747
 748         phy_mask = ((port->wide_port_phymap) ? port->wide_port_phymap :
 749                 sas_port->phy_mask) & TXQ_PHY_MASK;
 750
 751         slot->tx = mvi->tx_prod;
 752         mvi->tx[mvi->tx_prod] = cpu_to_le32(TXQ_MODE_I | tag |
 753                                 (TXQ_CMD_SSP << TXQ_CMD_SHIFT) |
 754                                 (phy_mask << TXQ_PHY_SHIFT));
 755
 756         flags = MCH_RETRY;
 757         if (task->ssp_task.enable_first_burst) {
 758                 flags |= MCH_FBURST;
 759                 fburst = (1 << 7);
 760         }
 761         if (is_tmf)
 762                 flags |= (MCH_SSP_FR_TASK << MCH_SSP_FR_TYPE_SHIFT);
 763         hdr->flags = cpu_to_le32(flags | (tei->n_elem << MCH_PRD_LEN_SHIFT));
 764         hdr->tags = cpu_to_le32(tag);
 765         hdr->data_len = cpu_to_le32(task->total_xfer_len);
 766
 767         /*
 768          * arrange MVS_SLOT_BUF_SZ-sized DMA buffer according to our needs
 769          */
 770
 771         /* region 1: command table area (MVS_SSP_CMD_SZ bytes) ************** */
 772         buf_cmd = buf_tmp = slot->buf;
 773         buf_tmp_dma = slot->buf_dma;
 774
 775         hdr->cmd_tbl = cpu_to_le64(buf_tmp_dma);
 776
 777         buf_tmp += MVS_SSP_CMD_SZ;
 778         buf_tmp_dma += MVS_SSP_CMD_SZ;
 779 #if _MV_DUMP
 780         slot->cmd_size = MVS_SSP_CMD_SZ;
 781 #endif
 782
 783         /* region 2: open address frame area (MVS_OAF_SZ bytes) ********* */
 784         buf_oaf = buf_tmp;
 785         hdr->open_frame = cpu_to_le64(buf_tmp_dma);
 786
 787         buf_tmp += MVS_OAF_SZ;
 788         buf_tmp_dma += MVS_OAF_SZ;
 789
 790         /* region 3: PRD table ********************************************* */
 791         buf_prd = buf_tmp;
 792         if (tei->n_elem)
 793                 hdr->prd_tbl = cpu_to_le64(buf_tmp_dma);
 794         else
 795                 hdr->prd_tbl = 0;
 796
 797         i = MVS_CHIP_DISP->prd_size() * tei->n_elem;
 798         buf_tmp += i;
 799         buf_tmp_dma += i;
 800
 801         /* region 4: status buffer (larger the PRD, smaller this buf) ****** */
 802         slot->response = buf_tmp;
 803         hdr->status_buf = cpu_to_le64(buf_tmp_dma);
 804         if (mvi->flags & MVF_FLAG_SOC)
 805                 hdr->reserved[0] = 0;
 806
 807         resp_len = MVS_SLOT_BUF_SZ - MVS_SSP_CMD_SZ - MVS_OAF_SZ -
 808             sizeof(struct mvs_err_info) - i;
 809         resp_len = min(resp_len, max_resp_len);
 810
 811         req_len = sizeof(struct ssp_frame_hdr) + 28;
 812
 813         /* request, response lengths */
 814         hdr->lens = cpu_to_le32(((resp_len / 4) << 16) | (req_len / 4));
 815
 816         /* generate open address frame hdr (first 12 bytes) */
 817         /* initiator, SSP, ftype 1h */
 818         buf_oaf[0] = (1 << 7) | (PROTOCOL_SSP << 4) | 0x1;
 819         buf_oaf[1] = dev->linkrate & 0xf;
 820         *(u16 *)(buf_oaf + 2) = cpu_to_be16(mvi_dev->device_id + 1);
 821         memcpy(buf_oaf + 4, dev->sas_addr, SAS_ADDR_SIZE);
 822
 823         /* fill in SSP frame header (Command Table.SSP frame header) */
 824         ssp_hdr = (struct ssp_frame_hdr *)buf_cmd;
 825
 826         if (is_tmf)
 827                 ssp_hdr->frame_type = SSP_TASK;
 828         else
 829                 ssp_hdr->frame_type = SSP_COMMAND;
 830
 831         memcpy(ssp_hdr->hashed_dest_addr, dev->hashed_sas_addr,
 832                HASHED_SAS_ADDR_SIZE);
 833         memcpy(ssp_hdr->hashed_src_addr,
 834                dev->hashed_sas_addr, HASHED_SAS_ADDR_SIZE);
 835         ssp_hdr->tag = cpu_to_be16(tag);
 836
 837         /* fill in IU for TASK and Command Frame */
 838         buf_cmd += sizeof(*ssp_hdr);
 839         memcpy(buf_cmd, &task->ssp_task.LUN, 8);
 840
 841         if (ssp_hdr->frame_type != SSP_TASK) {
 842                 buf_cmd[9] = fburst | task->ssp_task.task_attr |
 843                                 (task->ssp_task.task_prio << 3);
 844                 memcpy(buf_cmd + 12, &task->ssp_task.cdb, 16);
 845         } else{
 846                 buf_cmd[10] = tmf->tmf;
 847                 switch (tmf->tmf) {
 848                 case TMF_ABORT_TASK:
 849                 case TMF_QUERY_TASK:
 850                         buf_cmd[12] =
 851                                 (tmf->tag_of_task_to_be_managed >> 8) & 0xff;
 852                         buf_cmd[13] =
 853                                 tmf->tag_of_task_to_be_managed & 0xff;
 854                         break;
 855                 default:
 856                         break;
 857                 }
 858         }
 859         /* fill in PRD (scatter/gather) table, if any */
 860         MVS_CHIP_DISP->make_prd(task->scatter, tei->n_elem, buf_prd);
 861         return 0;
 862 }
 863
 864 #define DEV_IS_GONE(mvi_dev)    ((!mvi_dev || (mvi_dev->dev_type == NO_DEVICE)))
 865 static int mvs_task_exec(struct sas_task *task, const int num, gfp_t gfp_flags,
 866                                 struct completion *completion,int is_tmf,
 867                                 struct mvs_tmf_task *tmf)
 868 {
 869         struct domain_device *dev = task->dev;
 870         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
 871         struct mvs_info *mvi = mvi_dev->mvi_info;
 872         struct mvs_task_exec_info tei;
 873         struct sas_task *t = task;
 874         struct mvs_slot_info *slot;
 875         u32 tag = 0xdeadbeef, rc, n_elem = 0;
 876         u32 n = num, pass = 0;
 877         unsigned long flags = 0,  flags_libsas = 0;
 878
 879         if (!dev->port) {
 880                 struct task_status_struct *tsm = &t->task_status;
 881
 882                 tsm->resp = SAS_TASK_UNDELIVERED;
 883                 tsm->stat = SAS_PHY_DOWN;
 884                 if (dev->dev_type != SATA_DEV)
 885                         t->task_done(t);
 886                 return 0;
 887         }
 888
 889         spin_lock_irqsave(&mvi->lock, flags);
 890         do {
 891                 dev = t->dev;
 892                 mvi_dev = dev->lldd_dev;
 893                 if (DEV_IS_GONE(mvi_dev)) {
 894                         if (mvi_dev)
 895                                 mv_dprintk("device %d not ready.\n",
 896                                         mvi_dev->device_id);
 897                         else
 898                                 mv_dprintk("device %016llx not ready.\n",
 899                                         SAS_ADDR(dev->sas_addr));
 900
 901                         rc = SAS_PHY_DOWN;
 902                         goto out_done;
 903                 }
 904
 905                 if (dev->port->id >= mvi->chip->n_phy)
 906                         tei.port = &mvi->port[dev->port->id - mvi->chip->n_phy];
 907                 else
 908                         tei.port = &mvi->port[dev->port->id];
 909
 910                 if (tei.port && !tei.port->port_attached) {
 911                         if (sas_protocol_ata(t->task_proto)) {
 912                                 struct task_status_struct *ts = &t->task_status;
 913
 914                                 mv_dprintk("port %d does not"
 915                                         "attached device.\n", dev->port->id);
 916                                 ts->stat = SAS_PROTO_RESPONSE;
 917                                 ts->stat = SAS_PHY_DOWN;
 918                                 spin_unlock_irqrestore(dev->sata_dev.ap->lock,
 919                                                        flags_libsas);
 920                                 spin_unlock_irqrestore(&mvi->lock, flags);
 921                                 t->task_done(t);
 922                                 spin_lock_irqsave(&mvi->lock, flags);
 923                                 spin_lock_irqsave(dev->sata_dev.ap->lock,
 924                                                   flags_libsas);
 925                                 if (n > 1)
 926                                         t = list_entry(t->list.next,
 927                                                        struct sas_task, list);
 928                                 continue;
 929                         } else {
 930                                 struct task_status_struct *ts = &t->task_status;
 931                                 ts->resp = SAS_TASK_UNDELIVERED;
 932                                 ts->stat = SAS_PHY_DOWN;
 933                                 t->task_done(t);
 934                                 if (n > 1)
 935                                         t = list_entry(t->list.next,
 936                                                         struct sas_task, list);
 937                                 continue;
 938                         }
 939                 }
 940
 941                 if (!sas_protocol_ata(t->task_proto)) {
 942                         if (t->num_scatter) {
 943                                 n_elem = dma_map_sg(mvi->dev,
 944                                                     t->scatter,
 945                                                     t->num_scatter,
 946                                                     t->data_dir);
 947                                 if (!n_elem) {
 948                                         rc = -ENOMEM;
 949                                         goto err_out;
 950                                 }
 951                         }
 952                 } else {
 953                         n_elem = t->num_scatter;
 954                 }
 955
 956                 rc = mvs_tag_alloc(mvi, &tag);
 957                 if (rc)
 958                         goto err_out;
 959
 960                 slot = &mvi->slot_info[tag];
 961
 962
 963                 t->lldd_task = NULL;
 964                 slot->n_elem = n_elem;
 965                 slot->slot_tag = tag;
 966                 memset(slot->buf, 0, MVS_SLOT_BUF_SZ);
 967
 968                 tei.task = t;
 969                 tei.hdr = &mvi->slot[tag];
 970                 tei.tag = tag;
 971                 tei.n_elem = n_elem;
 972                 switch (t->task_proto) {
 973                 case SAS_PROTOCOL_SMP:
 974                         rc = mvs_task_prep_smp(mvi, &tei);
 975                         break;
 976                 case SAS_PROTOCOL_SSP:
 977                         rc = mvs_task_prep_ssp(mvi, &tei, is_tmf, tmf);
 978                         break;
 979                 case SAS_PROTOCOL_SATA:
 980                 case SAS_PROTOCOL_STP:
 981                 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 982                         rc = mvs_task_prep_ata(mvi, &tei);
 983                         break;
 984                 default:
 985                         dev_printk(KERN_ERR, mvi->dev,
 986                                    "unknown sas_task proto: 0x%x\n",
 987                                    t->task_proto);
 988                         rc = -EINVAL;
 989                         break;
 990                 }
 991
 992                 if (rc) {
 993                         mv_dprintk("rc is %x\n", rc);
 994                         goto err_out_tag;
 995                 }
 996                 slot->task = t;
 997                 slot->port = tei.port;
 998                 t->lldd_task = slot;
 999                 list_add_tail(&slot->entry, &tei.port->list);
1000                 /* TODO: select normal or high priority */
1001                 spin_lock(&t->task_state_lock);
1002                 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
1003                 spin_unlock(&t->task_state_lock);
1004
1005                 mvs_hba_memory_dump(mvi, tag, t->task_proto);
1006                 mvi_dev->running_req++;
1007                 ++pass;
1008                 mvi->tx_prod = (mvi->tx_prod + 1) & (MVS_CHIP_SLOT_SZ - 1);
1009                 if (n > 1)
1010                         t = list_entry(t->list.next, struct sas_task, list);
1011                 if (likely(pass))
1012                         MVS_CHIP_DISP->start_delivery(mvi, (mvi->tx_prod - 1) &
1013                                                       (MVS_CHIP_SLOT_SZ - 1));
1014
1015         } while (--n);
1016         rc = 0;
1017         goto out_done;
1018
1019 err_out_tag:
1020         mvs_tag_free(mvi, tag);
1021 err_out:
1022
1023         dev_printk(KERN_ERR, mvi->dev, "mvsas exec failed[%d]!\n", rc);
1024         if (!sas_protocol_ata(t->task_proto))
1025                 if (n_elem)
1026                         dma_unmap_sg(mvi->dev, t->scatter, n_elem,
1027                                      t->data_dir);
1028 out_done:
1029         spin_unlock_irqrestore(&mvi->lock, flags);
1030         return rc;
1031 }
1032
1033 int mvs_queue_command(struct sas_task *task, const int num,
1034                         gfp_t gfp_flags)
1035 {
1036         return mvs_task_exec(task, num, gfp_flags, NULL, 0, NULL);
1037 }
1038
1039 static void mvs_slot_free(struct mvs_info *mvi, u32 rx_desc)
1040 {
1041         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1042         mvs_tag_clear(mvi, slot_idx);
1043 }
1044
1045 static void mvs_slot_task_free(struct mvs_info *mvi, struct sas_task *task,
1046                           struct mvs_slot_info *slot, u32 slot_idx)
1047 {
1048         if (!slot->task)
1049                 return;
1050         if (!sas_protocol_ata(task->task_proto))
1051                 if (slot->n_elem)
1052                         dma_unmap_sg(mvi->dev, task->scatter,
1053                                      slot->n_elem, task->data_dir);
1054
1055         switch (task->task_proto) {
1056         case SAS_PROTOCOL_SMP:
1057                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_resp, 1,
1058                              PCI_DMA_FROMDEVICE);
1059                 dma_unmap_sg(mvi->dev, &task->smp_task.smp_req, 1,
1060                              PCI_DMA_TODEVICE);
1061                 break;
1062
1063         case SAS_PROTOCOL_SATA:
1064         case SAS_PROTOCOL_STP:
1065         case SAS_PROTOCOL_SSP:
1066         default:
1067                 /* do nothing */
1068                 break;
1069         }
1070         list_del_init(&slot->entry);
1071         task->lldd_task = NULL;
1072         slot->task = NULL;
1073         slot->port = NULL;
1074         slot->slot_tag = 0xFFFFFFFF;
1075         mvs_slot_free(mvi, slot_idx);
1076 }
1077
1078 static void mvs_update_wideport(struct mvs_info *mvi, int i)
1079 {
1080         struct mvs_phy *phy = &mvi->phy[i];
1081         struct mvs_port *port = phy->port;
1082         int j, no;
1083
1084         for_each_phy(port->wide_port_phymap, j, no) {
1085                 if (j & 1) {
1086                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1087                                                 PHYR_WIDE_PORT);
1088                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1089                                                 port->wide_port_phymap);
1090                 } else {
1091                         MVS_CHIP_DISP->write_port_cfg_addr(mvi, no,
1092                                                 PHYR_WIDE_PORT);
1093                         MVS_CHIP_DISP->write_port_cfg_data(mvi, no,
1094                                                 0);
1095                 }
1096         }
1097 }
1098
1099 static u32 mvs_is_phy_ready(struct mvs_info *mvi, int i)
1100 {
1101         u32 tmp;
1102         struct mvs_phy *phy = &mvi->phy[i];
1103         struct mvs_port *port = phy->port;
1104
1105         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, i);
1106         if ((tmp & PHY_READY_MASK) && !(phy->irq_status & PHYEV_POOF)) {
1107                 if (!port)
1108                         phy->phy_attached = 1;
1109                 return tmp;
1110         }
1111
1112         if (port) {
1113                 if (phy->phy_type & PORT_TYPE_SAS) {
1114                         port->wide_port_phymap &= ~(1U << i);
1115                         if (!port->wide_port_phymap)
1116                                 port->port_attached = 0;
1117                         mvs_update_wideport(mvi, i);
1118                 } else if (phy->phy_type & PORT_TYPE_SATA)
1119                         port->port_attached = 0;
1120                 phy->port = NULL;
1121                 phy->phy_attached = 0;
1122                 phy->phy_type &= ~(PORT_TYPE_SAS | PORT_TYPE_SATA);
1123         }
1124         return 0;
1125 }
1126
1127 static void *mvs_get_d2h_reg(struct mvs_info *mvi, int i, void *buf)
1128 {
1129         u32 *s = (u32 *) buf;
1130
1131         if (!s)
1132                 return NULL;
1133
1134         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG3);
1135         s[3] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i);
1136
1137         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG2);
1138         s[2] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i);
1139
1140         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG1);
1141         s[1] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i);
1142
1143         MVS_CHIP_DISP->write_port_cfg_addr(mvi, i, PHYR_SATA_SIG0);
1144         s[0] = MVS_CHIP_DISP->read_port_cfg_data(mvi, i);
1145
1146         /* Workaround: take some ATAPI devices for ATA */
1147         if (((s[1] & 0x00FFFFFF) == 0x00EB1401) && (*(u8 *)&s[3] == 0x01))
1148                 s[1] = 0x00EB1401 | (*((u8 *)&s[1] + 3) & 0x10);
1149
1150         return s;
1151 }
1152
1153 static u32 mvs_is_sig_fis_received(u32 irq_status)
1154 {
1155         return irq_status & PHYEV_SIG_FIS;
1156 }
1157
1158 void mvs_update_phyinfo(struct mvs_info *mvi, int i, int get_st)
1159 {
1160         struct mvs_phy *phy = &mvi->phy[i];
1161         struct sas_identify_frame *id;
1162
1163         id = (struct sas_identify_frame *)phy->frame_rcvd;
1164
1165         if (get_st) {
1166                 phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, i);
1167                 phy->phy_status = mvs_is_phy_ready(mvi, i);
1168         }
1169
1170         if (phy->phy_status) {
1171                 int oob_done = 0;
1172                 struct asd_sas_phy *sas_phy = &mvi->phy[i].sas_phy;
1173
1174                 oob_done = MVS_CHIP_DISP->oob_done(mvi, i);
1175
1176                 MVS_CHIP_DISP->fix_phy_info(mvi, i, id);
1177                 if (phy->phy_type & PORT_TYPE_SATA) {
1178                         phy->identify.target_port_protocols = SAS_PROTOCOL_STP;
1179                         if (mvs_is_sig_fis_received(phy->irq_status)) {
1180                                 phy->phy_attached = 1;
1181                                 phy->att_dev_sas_addr =
1182                                         i + mvi->id * mvi->chip->n_phy;
1183                                 if (oob_done)
1184                                         sas_phy->oob_mode = SATA_OOB_MODE;
1185                                 phy->frame_rcvd_size =
1186                                     sizeof(struct dev_to_host_fis);
1187                                 mvs_get_d2h_reg(mvi, i, id);
1188                         } else {
1189                                 u32 tmp;
1190                                 dev_printk(KERN_DEBUG, mvi->dev,
1191                                         "Phy%d : No sig fis\n", i);
1192                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, i);
1193                                 MVS_CHIP_DISP->write_port_irq_mask(mvi, i,
1194                                                 tmp | PHYEV_SIG_FIS);
1195                                 phy->phy_attached = 0;
1196                                 phy->phy_type &= ~PORT_TYPE_SATA;
1197                                 MVS_CHIP_DISP->phy_reset(mvi, i, 0);
1198                                 goto out_done;
1199                         }
1200                 }       else if (phy->phy_type & PORT_TYPE_SAS
1201                         || phy->att_dev_info & PORT_SSP_INIT_MASK) {
1202                         phy->phy_attached = 1;
1203                         phy->identify.device_type =
1204                                 phy->att_dev_info & PORT_DEV_TYPE_MASK;
1205
1206                         if (phy->identify.device_type == SAS_END_DEV)
1207                                 phy->identify.target_port_protocols =
1208                                                         SAS_PROTOCOL_SSP;
1209                         else if (phy->identify.device_type != NO_DEVICE)
1210                                 phy->identify.target_port_protocols =
1211                                                         SAS_PROTOCOL_SMP;
1212                         if (oob_done)
1213                                 sas_phy->oob_mode = SAS_OOB_MODE;
1214                         phy->frame_rcvd_size =
1215                             sizeof(struct sas_identify_frame);
1216                 }
1217                 memcpy(sas_phy->attached_sas_addr,
1218                         &phy->att_dev_sas_addr, SAS_ADDR_SIZE);
1219
1220                 if (MVS_CHIP_DISP->phy_work_around)
1221                         MVS_CHIP_DISP->phy_work_around(mvi, i);
1222         }
1223         mv_dprintk("port %d attach dev info is %x\n",
1224                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_info);
1225         mv_dprintk("port %d attach sas addr is %llx\n",
1226                 i + mvi->id * mvi->chip->n_phy, phy->att_dev_sas_addr);
1227 out_done:
1228         if (get_st)
1229                 MVS_CHIP_DISP->write_port_irq_stat(mvi, i, phy->irq_status);
1230 }
1231
1232 static void mvs_port_notify_formed(struct asd_sas_phy *sas_phy, int lock)
1233 {
1234         struct sas_ha_struct *sas_ha = sas_phy->ha;
1235         struct mvs_info *mvi = NULL; int i = 0, hi;
1236         struct mvs_phy *phy = sas_phy->lldd_phy;
1237         struct asd_sas_port *sas_port = sas_phy->port;
1238         struct mvs_port *port;
1239         unsigned long flags = 0;
1240         if (!sas_port)
1241                 return;
1242
1243         while (sas_ha->sas_phy[i]) {
1244                 if (sas_ha->sas_phy[i] == sas_phy)
1245                         break;
1246                 i++;
1247         }
1248         hi = i/((struct mvs_prv_info *)sas_ha->lldd_ha)->n_phy;
1249         mvi = ((struct mvs_prv_info *)sas_ha->lldd_ha)->mvi[hi];
1250         if (sas_port->id >= mvi->chip->n_phy)
1251                 port = &mvi->port[sas_port->id - mvi->chip->n_phy];
1252         else
1253                 port = &mvi->port[sas_port->id];
1254         if (lock)
1255                 spin_lock_irqsave(&mvi->lock, flags);
1256         port->port_attached = 1;
1257         phy->port = port;
1258         if (phy->phy_type & PORT_TYPE_SAS) {
1259                 port->wide_port_phymap = sas_port->phy_mask;
1260                 mv_printk("set wide port phy map %x\n", sas_port->phy_mask);
1261                 mvs_update_wideport(mvi, sas_phy->id);
1262         }
1263         if (lock)
1264                 spin_unlock_irqrestore(&mvi->lock, flags);
1265 }
1266
1267 static void mvs_port_notify_deformed(struct asd_sas_phy *sas_phy, int lock)
1268 {
1269         struct domain_device *dev;
1270         struct mvs_phy *phy = sas_phy->lldd_phy;
1271         struct mvs_info *mvi = phy->mvi;
1272         struct asd_sas_port *port = sas_phy->port;
1273         int phy_no = 0;
1274
1275         while (phy != &mvi->phy[phy_no]) {
1276                 phy_no++;
1277                 if (phy_no >= MVS_MAX_PHYS)
1278                         return;
1279         }
1280         list_for_each_entry(dev, &port->dev_list, dev_list_node)
1281                 mvs_do_release_task(phy->mvi, phy_no, NULL);
1282
1283 }
1284
1285
1286 void mvs_port_formed(struct asd_sas_phy *sas_phy)
1287 {
1288         mvs_port_notify_formed(sas_phy, 1);
1289 }
1290
1291 void mvs_port_deformed(struct asd_sas_phy *sas_phy)
1292 {
1293         mvs_port_notify_deformed(sas_phy, 1);
1294 }
1295
1296 struct mvs_device *mvs_alloc_dev(struct mvs_info *mvi)
1297 {
1298         u32 dev;
1299         for (dev = 0; dev < MVS_MAX_DEVICES; dev++) {
1300                 if (mvi->devices[dev].dev_type == NO_DEVICE) {
1301                         mvi->devices[dev].device_id = dev;
1302                         return &mvi->devices[dev];
1303                 }
1304         }
1305
1306         if (dev == MVS_MAX_DEVICES)
1307                 mv_printk("max support %d devices, ignore ..\n",
1308                         MVS_MAX_DEVICES);
1309
1310         return NULL;
1311 }
1312
1313 void mvs_free_dev(struct mvs_device *mvi_dev)
1314 {
1315         u32 id = mvi_dev->device_id;
1316         memset(mvi_dev, 0, sizeof(*mvi_dev));
1317         mvi_dev->device_id = id;
1318         mvi_dev->dev_type = NO_DEVICE;
1319         mvi_dev->dev_status = MVS_DEV_NORMAL;
1320         mvi_dev->taskfileset = MVS_ID_NOT_MAPPED;
1321 }
1322
1323 int mvs_dev_found_notify(struct domain_device *dev, int lock)
1324 {
1325         unsigned long flags = 0;
1326         int res = 0;
1327         struct mvs_info *mvi = NULL;
1328         struct domain_device *parent_dev = dev->parent;
1329         struct mvs_device *mvi_device;
1330
1331         mvi = mvs_find_dev_mvi(dev);
1332
1333         if (lock)
1334                 spin_lock_irqsave(&mvi->lock, flags);
1335
1336         mvi_device = mvs_alloc_dev(mvi);
1337         if (!mvi_device) {
1338                 res = -1;
1339                 goto found_out;
1340         }
1341         dev->lldd_dev = mvi_device;
1342         mvi_device->dev_status = MVS_DEV_NORMAL;
1343         mvi_device->dev_type = dev->dev_type;
1344         mvi_device->mvi_info = mvi;
1345         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
1346                 int phy_id;
1347                 u8 phy_num = parent_dev->ex_dev.num_phys;
1348                 struct ex_phy *phy;
1349                 for (phy_id = 0; phy_id < phy_num; phy_id++) {
1350                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
1351                         if (SAS_ADDR(phy->attached_sas_addr) ==
1352                                 SAS_ADDR(dev->sas_addr)) {
1353                                 mvi_device->attached_phy = phy_id;
1354                                 break;
1355                         }
1356                 }
1357
1358                 if (phy_id == phy_num) {
1359                         mv_printk("Error: no attached dev:%016llx"
1360                                 "at ex:%016llx.\n",
1361                                 SAS_ADDR(dev->sas_addr),
1362                                 SAS_ADDR(parent_dev->sas_addr));
1363                         res = -1;
1364                 }
1365         }
1366
1367 found_out:
1368         if (lock)
1369                 spin_unlock_irqrestore(&mvi->lock, flags);
1370         return res;
1371 }
1372
1373 int mvs_dev_found(struct domain_device *dev)
1374 {
1375         return mvs_dev_found_notify(dev, 1);
1376 }
1377
1378 void mvs_dev_gone_notify(struct domain_device *dev)
1379 {
1380         unsigned long flags = 0;
1381         struct mvs_device *mvi_dev = dev->lldd_dev;
1382         struct mvs_info *mvi = mvi_dev->mvi_info;
1383
1384         spin_lock_irqsave(&mvi->lock, flags);
1385
1386         if (mvi_dev) {
1387                 mv_dprintk("found dev[%d:%x] is gone.\n",
1388                         mvi_dev->device_id, mvi_dev->dev_type);
1389                 mvs_release_task(mvi, dev);
1390                 mvs_free_reg_set(mvi, mvi_dev);
1391                 mvs_free_dev(mvi_dev);
1392         } else {
1393                 mv_dprintk("found dev has gone.\n");
1394         }
1395         dev->lldd_dev = NULL;
1396
1397         spin_unlock_irqrestore(&mvi->lock, flags);
1398 }
1399
1400
1401 void mvs_dev_gone(struct domain_device *dev)
1402 {
1403         mvs_dev_gone_notify(dev);
1404 }
1405
1406 static  struct sas_task *mvs_alloc_task(void)
1407 {
1408         struct sas_task *task = kzalloc(sizeof(struct sas_task), GFP_KERNEL);
1409
1410         if (task) {
1411                 INIT_LIST_HEAD(&task->list);
1412                 spin_lock_init(&task->task_state_lock);
1413                 task->task_state_flags = SAS_TASK_STATE_PENDING;
1414                 init_timer(&task->timer);
1415                 init_completion(&task->completion);
1416         }
1417         return task;
1418 }
1419
1420 static  void mvs_free_task(struct sas_task *task)
1421 {
1422         if (task) {
1423                 BUG_ON(!list_empty(&task->list));
1424                 kfree(task);
1425         }
1426 }
1427
1428 static void mvs_task_done(struct sas_task *task)
1429 {
1430         if (!del_timer(&task->timer))
1431                 return;
1432         complete(&task->completion);
1433 }
1434
1435 static void mvs_tmf_timedout(unsigned long data)
1436 {
1437         struct sas_task *task = (struct sas_task *)data;
1438
1439         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1440         complete(&task->completion);
1441 }
1442
1443 /* XXX */
1444 #define MVS_TASK_TIMEOUT 20
1445 static int mvs_exec_internal_tmf_task(struct domain_device *dev,
1446                         void *parameter, u32 para_len, struct mvs_tmf_task *tmf)
1447 {
1448         int res, retry;
1449         struct sas_task *task = NULL;
1450
1451         for (retry = 0; retry < 3; retry++) {
1452                 task = mvs_alloc_task();
1453                 if (!task)
1454                         return -ENOMEM;
1455
1456                 task->dev = dev;
1457                 task->task_proto = dev->tproto;
1458
1459                 memcpy(&task->ssp_task, parameter, para_len);
1460                 task->task_done = mvs_task_done;
1461
1462                 task->timer.data = (unsigned long) task;
1463                 task->timer.function = mvs_tmf_timedout;
1464                 task->timer.expires = jiffies + MVS_TASK_TIMEOUT*HZ;
1465                 add_timer(&task->timer);
1466
1467                 res = mvs_task_exec(task, 1, GFP_KERNEL, NULL, 1, tmf);
1468
1469                 if (res) {
1470                         del_timer(&task->timer);
1471                         mv_printk("executing internel task failed:%d\n", res);
1472                         goto ex_err;
1473                 }
1474
1475                 wait_for_completion(&task->completion);
1476                 res = -TMF_RESP_FUNC_FAILED;
1477                 /* Even TMF timed out, return direct. */
1478                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
1479                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
1480                                 mv_printk("TMF task[%x] timeout.\n", tmf->tmf);
1481                                 goto ex_err;
1482                         }
1483                 }
1484
1485                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1486                     task->task_status.stat == SAM_STAT_GOOD) {
1487                         res = TMF_RESP_FUNC_COMPLETE;
1488                         break;
1489                 }
1490
1491                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1492                       task->task_status.stat == SAS_DATA_UNDERRUN) {
1493                         /* no error, but return the number of bytes of
1494                          * underrun */
1495                         res = task->task_status.residual;
1496                         break;
1497                 }
1498
1499                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
1500                       task->task_status.stat == SAS_DATA_OVERRUN) {
1501                         mv_dprintk("blocked task error.\n");
1502                         res = -EMSGSIZE;
1503                         break;
1504                 } else {
1505                         mv_dprintk(" task to dev %016llx response: 0x%x "
1506                                     "status 0x%x\n",
1507                                     SAS_ADDR(dev->sas_addr),
1508                                     task->task_status.resp,
1509                                     task->task_status.stat);
1510                         mvs_free_task(task);
1511                         task = NULL;
1512
1513                 }
1514         }
1515 ex_err:
1516         BUG_ON(retry == 3 && task != NULL);
1517         if (task != NULL)
1518                 mvs_free_task(task);
1519         return res;
1520 }
1521
1522 static int mvs_debug_issue_ssp_tmf(struct domain_device *dev,
1523                                 u8 *lun, struct mvs_tmf_task *tmf)
1524 {
1525         struct sas_ssp_task ssp_task;
1526         DECLARE_COMPLETION_ONSTACK(completion);
1527         if (!(dev->tproto & SAS_PROTOCOL_SSP))
1528                 return TMF_RESP_FUNC_ESUPP;
1529
1530         strncpy((u8 *)&ssp_task.LUN, lun, 8);
1531
1532         return mvs_exec_internal_tmf_task(dev, &ssp_task,
1533                                 sizeof(ssp_task), tmf);
1534 }
1535
1536
1537 /*  Standard mandates link reset for ATA  (type 0)
1538     and hard reset for SSP (type 1) , only for RECOVERY */
1539 static int mvs_debug_I_T_nexus_reset(struct domain_device *dev)
1540 {
1541         int rc;
1542         struct sas_phy *phy = sas_find_local_phy(dev);
1543         int reset_type = (dev->dev_type == SATA_DEV ||
1544                         (dev->tproto & SAS_PROTOCOL_STP)) ? 0 : 1;
1545         rc = sas_phy_reset(phy, reset_type);
1546         msleep(2000);
1547         return rc;
1548 }
1549
1550 /* mandatory SAM-3 */
1551 int mvs_lu_reset(struct domain_device *dev, u8 *lun)
1552 {
1553         unsigned long flags;
1554         int i, phyno[WIDE_PORT_MAX_PHY], num , rc = TMF_RESP_FUNC_FAILED;
1555         struct mvs_tmf_task tmf_task;
1556         struct mvs_device * mvi_dev = dev->lldd_dev;
1557         struct mvs_info *mvi = mvi_dev->mvi_info;
1558
1559         tmf_task.tmf = TMF_LU_RESET;
1560         mvi_dev->dev_status = MVS_DEV_EH;
1561         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1562         if (rc == TMF_RESP_FUNC_COMPLETE) {
1563                 num = mvs_find_dev_phyno(dev, phyno);
1564                 spin_lock_irqsave(&mvi->lock, flags);
1565                 for (i = 0; i < num; i++)
1566                         mvs_release_task(mvi, dev);
1567                 spin_unlock_irqrestore(&mvi->lock, flags);
1568         }
1569         /* If failed, fall-through I_T_Nexus reset */
1570         mv_printk("%s for device[%x]:rc= %d\n", __func__,
1571                         mvi_dev->device_id, rc);
1572         return rc;
1573 }
1574
1575 int mvs_I_T_nexus_reset(struct domain_device *dev)
1576 {
1577         unsigned long flags;
1578         int rc = TMF_RESP_FUNC_FAILED;
1579     struct mvs_device * mvi_dev = (struct mvs_device *)dev->lldd_dev;
1580         struct mvs_info *mvi = mvi_dev->mvi_info;
1581
1582         if (mvi_dev->dev_status != MVS_DEV_EH)
1583                 return TMF_RESP_FUNC_COMPLETE;
1584         rc = mvs_debug_I_T_nexus_reset(dev);
1585         mv_printk("%s for device[%x]:rc= %d\n",
1586                 __func__, mvi_dev->device_id, rc);
1587
1588         /* housekeeper */
1589         spin_lock_irqsave(&mvi->lock, flags);
1590         mvs_release_task(mvi, dev);
1591         spin_unlock_irqrestore(&mvi->lock, flags);
1592
1593         return rc;
1594 }
1595 /* optional SAM-3 */
1596 int mvs_query_task(struct sas_task *task)
1597 {
1598         u32 tag;
1599         struct scsi_lun lun;
1600         struct mvs_tmf_task tmf_task;
1601         int rc = TMF_RESP_FUNC_FAILED;
1602
1603         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1604                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1605                 struct domain_device *dev = task->dev;
1606                 struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1607                 struct mvs_info *mvi = mvi_dev->mvi_info;
1608
1609                 int_to_scsilun(cmnd->device->lun, &lun);
1610                 rc = mvs_find_tag(mvi, task, &tag);
1611                 if (rc == 0) {
1612                         rc = TMF_RESP_FUNC_FAILED;
1613                         return rc;
1614                 }
1615
1616                 tmf_task.tmf = TMF_QUERY_TASK;
1617                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1618
1619                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1620                 switch (rc) {
1621                 /* The task is still in Lun, release it then */
1622                 case TMF_RESP_FUNC_SUCC:
1623                 /* The task is not in Lun or failed, reset the phy */
1624                 case TMF_RESP_FUNC_FAILED:
1625                 case TMF_RESP_FUNC_COMPLETE:
1626                         break;
1627                 default:
1628                         rc = TMF_RESP_FUNC_COMPLETE;
1629                         break;
1630                 }
1631         }
1632         mv_printk("%s:rc= %d\n", __func__, rc);
1633         return rc;
1634 }
1635
1636 /*  mandatory SAM-3, still need free task/slot info */
1637 int mvs_abort_task(struct sas_task *task)
1638 {
1639         struct scsi_lun lun;
1640         struct mvs_tmf_task tmf_task;
1641         struct domain_device *dev = task->dev;
1642         struct mvs_device *mvi_dev = (struct mvs_device *)dev->lldd_dev;
1643         struct mvs_info *mvi;
1644         int rc = TMF_RESP_FUNC_FAILED;
1645         unsigned long flags;
1646         u32 tag;
1647
1648         if (!mvi_dev) {
1649                 mv_printk("%s:%d TMF_RESP_FUNC_FAILED\n", __func__, __LINE__);
1650                 rc = TMF_RESP_FUNC_FAILED;
1651         }
1652
1653         mvi = mvi_dev->mvi_info;
1654
1655         spin_lock_irqsave(&task->task_state_lock, flags);
1656         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1657                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1658                 rc = TMF_RESP_FUNC_COMPLETE;
1659                 goto out;
1660         }
1661         spin_unlock_irqrestore(&task->task_state_lock, flags);
1662         mvi_dev->dev_status = MVS_DEV_EH;
1663         if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) {
1664                 struct scsi_cmnd * cmnd = (struct scsi_cmnd *)task->uldd_task;
1665
1666                 int_to_scsilun(cmnd->device->lun, &lun);
1667                 rc = mvs_find_tag(mvi, task, &tag);
1668                 if (rc == 0) {
1669                         mv_printk("No such tag in %s\n", __func__);
1670                         rc = TMF_RESP_FUNC_FAILED;
1671                         return rc;
1672                 }
1673
1674                 tmf_task.tmf = TMF_ABORT_TASK;
1675                 tmf_task.tag_of_task_to_be_managed = cpu_to_le16(tag);
1676
1677                 rc = mvs_debug_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1678
1679                 /* if successful, clear the task and callback forwards.*/
1680                 if (rc == TMF_RESP_FUNC_COMPLETE) {
1681                         u32 slot_no;
1682                         struct mvs_slot_info *slot;
1683
1684                         if (task->lldd_task) {
1685                                 slot = task->lldd_task;
1686                                 slot_no = (u32) (slot - mvi->slot_info);
1687                                 spin_lock_irqsave(&mvi->lock, flags);
1688                                 mvs_slot_complete(mvi, slot_no, 1);
1689                                 spin_unlock_irqrestore(&mvi->lock, flags);
1690                         }
1691                 }
1692
1693         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1694                 task->task_proto & SAS_PROTOCOL_STP) {
1695                 /* to do free register_set */
1696                 if (SATA_DEV == dev->dev_type) {
1697                         struct mvs_slot_info *slot = task->lldd_task;
1698                         struct task_status_struct *tstat;
1699                         u32 slot_idx = (u32)(slot - mvi->slot_info);
1700                         tstat = &task->task_status;
1701                         mv_dprintk(KERN_DEBUG "mv_abort_task() mvi=%p task=%p "
1702                                    "slot=%p slot_idx=x%x\n",
1703                                    mvi, task, slot, slot_idx);
1704                         tstat->stat = SAS_ABORTED_TASK;
1705                         if (mvi_dev && mvi_dev->running_req)
1706                                 mvi_dev->running_req--;
1707                         if (sas_protocol_ata(task->task_proto))
1708                                 mvs_free_reg_set(mvi, mvi_dev);
1709                         mvs_slot_task_free(mvi, task, slot, slot_idx);
1710                         return -1;
1711                 }
1712         } else {
1713                 /* SMP */
1714
1715         }
1716 out:
1717         if (rc != TMF_RESP_FUNC_COMPLETE)
1718                 mv_printk("%s:rc= %d\n", __func__, rc);
1719         return rc;
1720 }
1721
1722 int mvs_abort_task_set(struct domain_device *dev, u8 *lun)
1723 {
1724         int rc = TMF_RESP_FUNC_FAILED;
1725         struct mvs_tmf_task tmf_task;
1726
1727         tmf_task.tmf = TMF_ABORT_TASK_SET;
1728         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1729
1730         return rc;
1731 }
1732
1733 int mvs_clear_aca(struct domain_device *dev, u8 *lun)
1734 {
1735         int rc = TMF_RESP_FUNC_FAILED;
1736         struct mvs_tmf_task tmf_task;
1737
1738         tmf_task.tmf = TMF_CLEAR_ACA;
1739         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1740
1741         return rc;
1742 }
1743
1744 int mvs_clear_task_set(struct domain_device *dev, u8 *lun)
1745 {
1746         int rc = TMF_RESP_FUNC_FAILED;
1747         struct mvs_tmf_task tmf_task;
1748
1749         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1750         rc = mvs_debug_issue_ssp_tmf(dev, lun, &tmf_task);
1751
1752         return rc;
1753 }
1754
1755 static int mvs_sata_done(struct mvs_info *mvi, struct sas_task *task,
1756                         u32 slot_idx, int err)
1757 {
1758         struct mvs_device *mvi_dev = task->dev->lldd_dev;
1759         struct task_status_struct *tstat = &task->task_status;
1760         struct ata_task_resp *resp = (struct ata_task_resp *)tstat->buf;
1761         int stat = SAM_STAT_GOOD;
1762
1763
1764         resp->frame_len = sizeof(struct dev_to_host_fis);
1765         memcpy(&resp->ending_fis[0],
1766                SATA_RECEIVED_D2H_FIS(mvi_dev->taskfileset),
1767                sizeof(struct dev_to_host_fis));
1768         tstat->buf_valid_size = sizeof(*resp);
1769         if (unlikely(err)) {
1770                 if (unlikely(err & CMD_ISS_STPD))
1771                         stat = SAS_OPEN_REJECT;
1772                 else
1773                         stat = SAS_PROTO_RESPONSE;
1774        }
1775
1776         return stat;
1777 }
1778
1779 static int mvs_slot_err(struct mvs_info *mvi, struct sas_task *task,
1780                          u32 slot_idx)
1781 {
1782         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1783         int stat;
1784         u32 err_dw0 = le32_to_cpu(*(u32 *) (slot->response));
1785         u32 tfs = 0;
1786         enum mvs_port_type type = PORT_TYPE_SAS;
1787
1788         if (err_dw0 & CMD_ISS_STPD)
1789                 MVS_CHIP_DISP->issue_stop(mvi, type, tfs);
1790
1791         MVS_CHIP_DISP->command_active(mvi, slot_idx);
1792
1793         stat = SAM_STAT_CHECK_CONDITION;
1794         switch (task->task_proto) {
1795         case SAS_PROTOCOL_SSP:
1796                 stat = SAS_ABORTED_TASK;
1797                 break;
1798         case SAS_PROTOCOL_SMP:
1799                 stat = SAM_STAT_CHECK_CONDITION;
1800                 break;
1801
1802         case SAS_PROTOCOL_SATA:
1803         case SAS_PROTOCOL_STP:
1804         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
1805         {
1806                 if (err_dw0 == 0x80400002)
1807                         mv_printk("find reserved error, why?\n");
1808
1809                 task->ata_task.use_ncq = 0;
1810                 mvs_sata_done(mvi, task, slot_idx, err_dw0);
1811         }
1812                 break;
1813         default:
1814                 break;
1815         }
1816
1817         return stat;
1818 }
1819
1820 int mvs_slot_complete(struct mvs_info *mvi, u32 rx_desc, u32 flags)
1821 {
1822         u32 slot_idx = rx_desc & RXQ_SLOT_MASK;
1823         struct mvs_slot_info *slot = &mvi->slot_info[slot_idx];
1824         struct sas_task *task = slot->task;
1825         struct mvs_device *mvi_dev = NULL;
1826         struct task_status_struct *tstat;
1827         struct domain_device *dev;
1828         u32 aborted;
1829
1830         void *to;
1831         enum exec_status sts;
1832
1833         if (mvi->exp_req)
1834                 mvi->exp_req--;
1835         if (unlikely(!task || !task->lldd_task || !task->dev))
1836                 return -1;
1837
1838         tstat = &task->task_status;
1839         dev = task->dev;
1840         mvi_dev = dev->lldd_dev;
1841
1842         mvs_hba_cq_dump(mvi);
1843
1844         spin_lock(&task->task_state_lock);
1845         task->task_state_flags &=
1846                 ~(SAS_TASK_STATE_PENDING | SAS_TASK_AT_INITIATOR);
1847         task->task_state_flags |= SAS_TASK_STATE_DONE;
1848         /* race condition*/
1849         aborted = task->task_state_flags & SAS_TASK_STATE_ABORTED;
1850         spin_unlock(&task->task_state_lock);
1851
1852         memset(tstat, 0, sizeof(*tstat));
1853         tstat->resp = SAS_TASK_COMPLETE;
1854
1855         if (unlikely(aborted)) {
1856                 tstat->stat = SAS_ABORTED_TASK;
1857                 if (mvi_dev && mvi_dev->running_req)
1858                         mvi_dev->running_req--;
1859                 if (sas_protocol_ata(task->task_proto))
1860                         mvs_free_reg_set(mvi, mvi_dev);
1861
1862                 mvs_slot_task_free(mvi, task, slot, slot_idx);
1863                 return -1;
1864         }
1865
1866         if (unlikely(!mvi_dev || flags)) {
1867                 if (!mvi_dev)
1868                         mv_dprintk("port has not device.\n");
1869                 tstat->stat = SAS_PHY_DOWN;
1870                 goto out;
1871         }
1872
1873         /* error info record present */
1874         if (unlikely((rx_desc & RXQ_ERR) && (*(u64 *) slot->response))) {
1875                 tstat->stat = mvs_slot_err(mvi, task, slot_idx);
1876                 tstat->resp = SAS_TASK_COMPLETE;
1877                 goto out;
1878         }
1879
1880         switch (task->task_proto) {
1881         case SAS_PROTOCOL_SSP:
1882                 /* hw says status == 0, datapres == 0 */
1883                 if (rx_desc & RXQ_GOOD) {
1884                         tstat->stat = SAM_STAT_GOOD;
1885                         tstat->resp = SAS_TASK_COMPLETE;
1886                 }
1887                 /* response frame present */
1888                 else if (rx_desc & RXQ_RSP) {
1889                         struct ssp_response_iu *iu = slot->response +
1890                                                 sizeof(struct mvs_err_info);
1891                         sas_ssp_task_response(mvi->dev, task, iu);
1892                 } else
1893                         tstat->stat = SAM_STAT_CHECK_CONDITION;
1894                 break;
1895
1896         case SAS_PROTOCOL_SMP: {
1897                         struct scatterlist *sg_resp = &task->smp_task.smp_resp;
1898                         tstat->stat = SAM_STAT_GOOD;
1899                         to = kmap_atomic(sg_page(sg_resp), KM_IRQ0);
1900                         memcpy(to + sg_resp->offset,
1901                                 slot->response + sizeof(struct mvs_err_info),
1902                                 sg_dma_len(sg_resp));
1903                         kunmap_atomic(to, KM_IRQ0);
1904                         break;
1905                 }
1906
1907         case SAS_PROTOCOL_SATA:
1908         case SAS_PROTOCOL_STP:
1909         case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP: {
1910                         tstat->stat = mvs_sata_done(mvi, task, slot_idx, 0);
1911                         break;
1912                 }
1913
1914         default:
1915                 tstat->stat = SAM_STAT_CHECK_CONDITION;
1916                 break;
1917         }
1918         if (!slot->port->port_attached) {
1919                 mv_dprintk("port %d has removed.\n", slot->port->sas_port.id);
1920                 tstat->stat = SAS_PHY_DOWN;
1921         }
1922
1923
1924 out:
1925         if (mvi_dev && mvi_dev->running_req) {
1926                 mvi_dev->running_req--;
1927                 if (sas_protocol_ata(task->task_proto) && !mvi_dev->running_req)
1928                         mvs_free_reg_set(mvi, mvi_dev);
1929         }
1930         mvs_slot_task_free(mvi, task, slot, slot_idx);
1931         sts = tstat->stat;
1932
1933         spin_unlock(&mvi->lock);
1934         if (task->task_done)
1935                 task->task_done(task);
1936         else
1937                 mv_dprintk("why has not task_done.\n");
1938         spin_lock(&mvi->lock);
1939
1940         return sts;
1941 }
1942
1943 void mvs_do_release_task(struct mvs_info *mvi,
1944                 int phy_no, struct domain_device *dev)
1945 {
1946         u32 slot_idx;
1947         struct mvs_phy *phy;
1948         struct mvs_port *port;
1949         struct mvs_slot_info *slot, *slot2;
1950
1951         phy = &mvi->phy[phy_no];
1952         port = phy->port;
1953         if (!port)
1954                 return;
1955         /* clean cmpl queue in case request is already finished */
1956         mvs_int_rx(mvi, false);
1957
1958
1959
1960         list_for_each_entry_safe(slot, slot2, &port->list, entry) {
1961                 struct sas_task *task;
1962                 slot_idx = (u32) (slot - mvi->slot_info);
1963                 task = slot->task;
1964
1965                 if (dev && task->dev != dev)
1966                         continue;
1967
1968                 mv_printk("Release slot [%x] tag[%x], task [%p]:\n",
1969                         slot_idx, slot->slot_tag, task);
1970                 MVS_CHIP_DISP->command_active(mvi, slot_idx);
1971
1972                 mvs_slot_complete(mvi, slot_idx, 1);
1973         }
1974 }
1975
1976 void mvs_release_task(struct mvs_info *mvi,
1977                       struct domain_device *dev)
1978 {
1979         int i, phyno[WIDE_PORT_MAX_PHY], num;
1980         /* housekeeper */
1981         num = mvs_find_dev_phyno(dev, phyno);
1982         for (i = 0; i < num; i++)
1983                 mvs_do_release_task(mvi, phyno[i], dev);
1984 }
1985
1986 static void mvs_phy_disconnected(struct mvs_phy *phy)
1987 {
1988         phy->phy_attached = 0;
1989         phy->att_dev_info = 0;
1990         phy->att_dev_sas_addr = 0;
1991 }
1992
1993 static void mvs_work_queue(struct work_struct *work)
1994 {
1995         struct delayed_work *dw = container_of(work, struct delayed_work, work);
1996         struct mvs_wq *mwq = container_of(dw, struct mvs_wq, work_q);
1997         struct mvs_info *mvi = mwq->mvi;
1998         unsigned long flags;
1999
2000         spin_lock_irqsave(&mvi->lock, flags);
2001         if (mwq->handler & PHY_PLUG_EVENT) {
2002                 u32 phy_no = (unsigned long) mwq->data;
2003                 struct sas_ha_struct *sas_ha = mvi->sas;
2004                 struct mvs_phy *phy = &mvi->phy[phy_no];
2005                 struct asd_sas_phy *sas_phy = &phy->sas_phy;
2006
2007                 if (phy->phy_event & PHY_PLUG_OUT) {
2008                         u32 tmp;
2009                         struct sas_identify_frame *id;
2010                         id = (struct sas_identify_frame *)phy->frame_rcvd;
2011                         tmp = MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no);
2012                         phy->phy_event &= ~PHY_PLUG_OUT;
2013                         if (!(tmp & PHY_READY_MASK)) {
2014                                 sas_phy_disconnected(sas_phy);
2015                                 mvs_phy_disconnected(phy);
2016                                 sas_ha->notify_phy_event(sas_phy,
2017                                         PHYE_LOSS_OF_SIGNAL);
2018                                 mv_dprintk("phy%d Removed Device\n", phy_no);
2019                         } else {
2020                                 MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2021                                 mvs_update_phyinfo(mvi, phy_no, 1);
2022                                 mvs_bytes_dmaed(mvi, phy_no);
2023                                 mvs_port_notify_formed(sas_phy, 0);
2024                                 mv_dprintk("phy%d Attached Device\n", phy_no);
2025                         }
2026                 }
2027         }
2028         list_del(&mwq->entry);
2029         spin_unlock_irqrestore(&mvi->lock, flags);
2030         kfree(mwq);
2031 }
2032
2033 static int mvs_handle_event(struct mvs_info *mvi, void *data, int handler)
2034 {
2035         struct mvs_wq *mwq;
2036         int ret = 0;
2037
2038         mwq = kmalloc(sizeof(struct mvs_wq), GFP_ATOMIC);
2039         if (mwq) {
2040                 mwq->mvi = mvi;
2041                 mwq->data = data;
2042                 mwq->handler = handler;
2043                 MV_INIT_DELAYED_WORK(&mwq->work_q, mvs_work_queue, mwq);
2044                 list_add_tail(&mwq->entry, &mvi->wq_list);
2045                 schedule_delayed_work(&mwq->work_q, HZ * 2);
2046         } else
2047                 ret = -ENOMEM;
2048
2049         return ret;
2050 }
2051
2052 static void mvs_sig_time_out(unsigned long tphy)
2053 {
2054         struct mvs_phy *phy = (struct mvs_phy *)tphy;
2055         struct mvs_info *mvi = phy->mvi;
2056         u8 phy_no;
2057
2058         for (phy_no = 0; phy_no < mvi->chip->n_phy; phy_no++) {
2059                 if (&mvi->phy[phy_no] == phy) {
2060                         mv_dprintk("Get signature time out, reset phy %d\n",
2061                                 phy_no+mvi->id*mvi->chip->n_phy);
2062                         MVS_CHIP_DISP->phy_reset(mvi, phy_no, 1);
2063                 }
2064         }
2065 }
2066
2067 static void mvs_sig_remove_timer(struct mvs_phy *phy)
2068 {
2069         if (phy->timer.function)
2070                 del_timer(&phy->timer);
2071         phy->timer.function = NULL;
2072 }
2073
2074 void mvs_int_port(struct mvs_info *mvi, int phy_no, u32 events)
2075 {
2076         u32 tmp;
2077         struct sas_ha_struct *sas_ha = mvi->sas;
2078         struct mvs_phy *phy = &mvi->phy[phy_no];
2079         struct asd_sas_phy *sas_phy = &phy->sas_phy;
2080
2081         phy->irq_status = MVS_CHIP_DISP->read_port_irq_stat(mvi, phy_no);
2082         mv_dprintk("port %d ctrl sts=0x%X.\n", phy_no+mvi->id*mvi->chip->n_phy,
2083                 MVS_CHIP_DISP->read_phy_ctl(mvi, phy_no));
2084         mv_dprintk("Port %d irq sts = 0x%X\n", phy_no+mvi->id*mvi->chip->n_phy,
2085                 phy->irq_status);
2086
2087         /*
2088         * events is port event now ,
2089         * we need check the interrupt status which belongs to per port.
2090         */
2091
2092         if (phy->irq_status & PHYEV_DCDR_ERR) {
2093                 mv_dprintk("port %d STP decoding error.\n",
2094                 phy_no + mvi->id*mvi->chip->n_phy);
2095         }
2096
2097         if (phy->irq_status & PHYEV_POOF) {
2098                 if (!(phy->phy_event & PHY_PLUG_OUT)) {
2099                         int dev_sata = phy->phy_type & PORT_TYPE_SATA;
2100                         int ready;
2101                         mvs_do_release_task(mvi, phy_no, NULL);
2102                         phy->phy_event |= PHY_PLUG_OUT;
2103                         MVS_CHIP_DISP->clear_srs_irq(mvi, 0, 1);
2104                         mvs_handle_event(mvi,
2105                                 (void *)(unsigned long)phy_no,
2106                                 PHY_PLUG_EVENT);
2107                         ready = mvs_is_phy_ready(mvi, phy_no);
2108                         if (!ready)
2109                                 mv_dprintk("phy%d Unplug Notice\n",
2110                                         phy_no +
2111                                         mvi->id * mvi->chip->n_phy);
2112                         if (ready || dev_sata) {
2113                                 if (MVS_CHIP_DISP->stp_reset)
2114                                         MVS_CHIP_DISP->stp_reset(mvi,
2115                                                         phy_no);
2116                                 else
2117                                         MVS_CHIP_DISP->phy_reset(mvi,
2118                                                         phy_no, 0);
2119                                 return;
2120                         }
2121                 }
2122         }
2123
2124         if (phy->irq_status & PHYEV_COMWAKE) {
2125                 tmp = MVS_CHIP_DISP->read_port_irq_mask(mvi, phy_no);
2126                 MVS_CHIP_DISP->write_port_irq_mask(mvi, phy_no,
2127                                         tmp | PHYEV_SIG_FIS);
2128                 if (phy->timer.function == NULL) {
2129                         phy->timer.data = (unsigned long)phy;
2130                         phy->timer.function = mvs_sig_time_out;
2131                         phy->timer.expires = jiffies + 10*HZ;
2132                         add_timer(&phy->timer);
2133                 }
2134         }
2135         if (phy->irq_status & (PHYEV_SIG_FIS | PHYEV_ID_DONE)) {
2136                 phy->phy_status = mvs_is_phy_ready(mvi, phy_no);
2137                 mvs_sig_remove_timer(phy);
2138                 mv_dprintk("notify plug in on phy[%d]\n", phy_no);
2139                 if (phy->phy_status) {
2140                         mdelay(10);
2141                         MVS_CHIP_DISP->detect_porttype(mvi, phy_no);
2142                         if (phy->phy_type & PORT_TYPE_SATA) {
2143                                 tmp = MVS_CHIP_DISP->read_port_irq_mask(
2144                                                 mvi, phy_no);
2145                                 tmp &= ~PHYEV_SIG_FIS;
2146                                 MVS_CHIP_DISP->write_port_irq_mask(mvi,
2147                                                         phy_no, tmp);
2148                         }
2149                         mvs_update_phyinfo(mvi, phy_no, 0);
2150                         if (phy->phy_type & PORT_TYPE_SAS) {
2151                                 MVS_CHIP_DISP->phy_reset(mvi, phy_no, 2);
2152                                 mdelay(10);
2153                         }
2154
2155                         mvs_bytes_dmaed(mvi, phy_no);
2156                         /* whether driver is going to handle hot plug */
2157                         if (phy->phy_event & PHY_PLUG_OUT) {
2158                                 mvs_port_notify_formed(sas_phy, 0);
2159                                 phy->phy_event &= ~PHY_PLUG_OUT;
2160                         }
2161                 } else {
2162                         mv_dprintk("plugin interrupt but phy%d is gone\n",
2163                                 phy_no + mvi->id*mvi->chip->n_phy);
2164                 }
2165         } else if (phy->irq_status & PHYEV_BROAD_CH) {
2166                 mv_dprintk("port %d broadcast change.\n",
2167                         phy_no + mvi->id*mvi->chip->n_phy);
2168                 /* exception for Samsung disk drive*/
2169                 mdelay(1000);
2170                 sas_ha->notify_port_event(sas_phy, PORTE_BROADCAST_RCVD);
2171         }
2172         MVS_CHIP_DISP->write_port_irq_stat(mvi, phy_no, phy->irq_status);
2173 }
2174
2175 int mvs_int_rx(struct mvs_info *mvi, bool self_clear)
2176 {
2177         u32 rx_prod_idx, rx_desc;
2178         bool attn = false;
2179
2180         /* the first dword in the RX ring is special: it contains
2181          * a mirror of the hardware's RX producer index, so that
2182          * we don't have to stall the CPU reading that register.
2183          * The actual RX ring is offset by one dword, due to this.
2184          */
2185         rx_prod_idx = mvi->rx_cons;
2186         mvi->rx_cons = le32_to_cpu(mvi->rx[0]);
2187         if (mvi->rx_cons == 0xfff)      /* h/w hasn't touched RX ring yet */
2188                 return 0;
2189
2190         /* The CMPL_Q may come late, read from register and try again
2191         * note: if coalescing is enabled,
2192         * it will need to read from register every time for sure
2193         */
2194         if (unlikely(mvi->rx_cons == rx_prod_idx))
2195                 mvi->rx_cons = MVS_CHIP_DISP->rx_update(mvi) & RX_RING_SZ_MASK;
2196
2197         if (mvi->rx_cons == rx_prod_idx)
2198                 return 0;
2199
2200         while (mvi->rx_cons != rx_prod_idx) {
2201                 /* increment our internal RX consumer pointer */
2202                 rx_prod_idx = (rx_prod_idx + 1) & (MVS_RX_RING_SZ - 1);
2203                 rx_desc = le32_to_cpu(mvi->rx[rx_prod_idx + 1]);
2204
2205                 if (likely(rx_desc & RXQ_DONE))
2206                         mvs_slot_complete(mvi, rx_desc, 0);
2207                 if (rx_desc & RXQ_ATTN) {
2208                         attn = true;
2209                 } else if (rx_desc & RXQ_ERR) {
2210                         if (!(rx_desc & RXQ_DONE))
2211                                 mvs_slot_complete(mvi, rx_desc, 0);
2212                 } else if (rx_desc & RXQ_SLOT_RESET) {
2213                         mvs_slot_free(mvi, rx_desc);
2214                 }
2215         }
2216
2217         if (attn && self_clear)
2218                 MVS_CHIP_DISP->int_full(mvi);
2219         return 0;
2220 }
2221