pm8001_sas.c

   1 /*
   2  * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver
   3  *
   4  * Copyright (c) 2008-2009 USI Co., Ltd.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions, and the following disclaimer,
  12  *    without modification.
  13  * 2. Redistributions in binary form must reproduce at minimum a disclaimer
  14  *    substantially similar to the "NO WARRANTY" disclaimer below
  15  *    ("Disclaimer") and any redistribution must be conditioned upon
  16  *    including a substantially similar Disclaimer requirement for further
  17  *    binary redistribution.
  18  * 3. Neither the names of the above-listed copyright holders nor the names
  19  *    of any contributors may be used to endorse or promote products derived
  20  *    from this software without specific prior written permission.
  21  *
  22  * Alternatively, this software may be distributed under the terms of the
  23  * GNU General Public License ("GPL") version 2 as published by the Free
  24  * Software Foundation.
  25  *
  26  * NO WARRANTY
  27  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  28  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  29  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
  30  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  31  * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  35  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  36  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  37  * POSSIBILITY OF SUCH DAMAGES.
  38  *
  39  */
  40
  41 #include <linux/slab.h>
  42 #include "pm8001_sas.h"
  43 #include "pm80xx_tracepoints.h"
  44
  45 /**
  46  * pm8001_find_tag - from sas task to find out  tag that belongs to this task
  47  * @task: the task sent to the LLDD
  48  * @tag: the found tag associated with the task
  49  */
  50 static int pm8001_find_tag(struct sas_task *task, u32 *tag)
  51 {
  52         if (task->lldd_task) {
  53                 struct pm8001_ccb_info *ccb;
  54                 ccb = task->lldd_task;
  55                 *tag = ccb->ccb_tag;
  56                 return 1;
  57         }
  58         return 0;
  59 }
  60
  61 /**
  62   * pm8001_tag_free - free the no more needed tag
  63   * @pm8001_ha: our hba struct
  64   * @tag: the found tag associated with the task
  65   */
  66 void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
  67 {
  68         void *bitmap = pm8001_ha->tags;
  69         clear_bit(tag, bitmap);
  70 }
  71
  72 /**
  73   * pm8001_tag_alloc - allocate a empty tag for task used.
  74   * @pm8001_ha: our hba struct
  75   * @tag_out: the found empty tag .
  76   */
  77 int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
  78 {
  79         unsigned int tag;
  80         void *bitmap = pm8001_ha->tags;
  81         unsigned long flags;
  82
  83         spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags);
  84         tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
  85         if (tag >= pm8001_ha->tags_num) {
  86                 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
  87                 return -SAS_QUEUE_FULL;
  88         }
  89         set_bit(tag, bitmap);
  90         spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags);
  91         *tag_out = tag;
  92         return 0;
  93 }
  94
  95 void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
  96 {
  97         int i;
  98         for (i = 0; i < pm8001_ha->tags_num; ++i)
  99                 pm8001_tag_free(pm8001_ha, i);
 100 }
 101
 102 /**
 103  * pm8001_mem_alloc - allocate memory for pm8001.
 104  * @pdev: pci device.
 105  * @virt_addr: the allocated virtual address
 106  * @pphys_addr: DMA address for this device
 107  * @pphys_addr_hi: the physical address high byte address.
 108  * @pphys_addr_lo: the physical address low byte address.
 109  * @mem_size: memory size.
 110  * @align: requested byte alignment
 111  */
 112 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
 113         dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
 114         u32 *pphys_addr_lo, u32 mem_size, u32 align)
 115 {
 116         caddr_t mem_virt_alloc;
 117         dma_addr_t mem_dma_handle;
 118         u64 phys_align;
 119         u64 align_offset = 0;
 120         if (align)
 121                 align_offset = (dma_addr_t)align - 1;
 122         mem_virt_alloc = dma_alloc_coherent(&pdev->dev, mem_size + align,
 123                                             &mem_dma_handle, GFP_KERNEL);
 124         if (!mem_virt_alloc)
 125                 return -ENOMEM;
 126         *pphys_addr = mem_dma_handle;
 127         phys_align = (*pphys_addr + align_offset) & ~align_offset;
 128         *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
 129         *pphys_addr_hi = upper_32_bits(phys_align);
 130         *pphys_addr_lo = lower_32_bits(phys_align);
 131         return 0;
 132 }
 133
 134 /**
 135   * pm8001_find_ha_by_dev - from domain device which come from sas layer to
 136   * find out our hba struct.
 137   * @dev: the domain device which from sas layer.
 138   */
 139 static
 140 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
 141 {
 142         struct sas_ha_struct *sha = dev->port->ha;
 143         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 144         return pm8001_ha;
 145 }
 146
 147 /**
 148   * pm8001_phy_control - this function should be registered to
 149   * sas_domain_function_template to provide libsas used, note: this is just
 150   * control the HBA phy rather than other expander phy if you want control
 151   * other phy, you should use SMP command.
 152   * @sas_phy: which phy in HBA phys.
 153   * @func: the operation.
 154   * @funcdata: always NULL.
 155   */
 156 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 157         void *funcdata)
 158 {
 159         int rc = 0, phy_id = sas_phy->id;
 160         struct pm8001_hba_info *pm8001_ha = NULL;
 161         struct sas_phy_linkrates *rates;
 162         struct pm8001_phy *phy;
 163         DECLARE_COMPLETION_ONSTACK(completion);
 164         unsigned long flags;
 165         pm8001_ha = sas_phy->ha->lldd_ha;
 166         phy = &pm8001_ha->phy[phy_id];
 167         pm8001_ha->phy[phy_id].enable_completion = &completion;
 168         switch (func) {
 169         case PHY_FUNC_SET_LINK_RATE:
 170                 rates = funcdata;
 171                 if (rates->minimum_linkrate) {
 172                         pm8001_ha->phy[phy_id].minimum_linkrate =
 173                                 rates->minimum_linkrate;
 174                 }
 175                 if (rates->maximum_linkrate) {
 176                         pm8001_ha->phy[phy_id].maximum_linkrate =
 177                                 rates->maximum_linkrate;
 178                 }
 179                 if (pm8001_ha->phy[phy_id].phy_state ==  PHY_LINK_DISABLE) {
 180                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 181                         wait_for_completion(&completion);
 182                 }
 183                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 184                                               PHY_LINK_RESET);
 185                 break;
 186         case PHY_FUNC_HARD_RESET:
 187                 if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
 188                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 189                         wait_for_completion(&completion);
 190                 }
 191                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 192                                               PHY_HARD_RESET);
 193                 break;
 194         case PHY_FUNC_LINK_RESET:
 195                 if (pm8001_ha->phy[phy_id].phy_state == PHY_LINK_DISABLE) {
 196                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 197                         wait_for_completion(&completion);
 198                 }
 199                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 200                                               PHY_LINK_RESET);
 201                 break;
 202         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 203                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 204                                               PHY_LINK_RESET);
 205                 break;
 206         case PHY_FUNC_DISABLE:
 207                 if (pm8001_ha->chip_id != chip_8001) {
 208                         if (pm8001_ha->phy[phy_id].phy_state ==
 209                                 PHY_STATE_LINK_UP_SPCV) {
 210                                 sas_phy_disconnected(&phy->sas_phy);
 211                                 sas_notify_phy_event(&phy->sas_phy,
 212                                         PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
 213                                 phy->phy_attached = 0;
 214                         }
 215                 } else {
 216                         if (pm8001_ha->phy[phy_id].phy_state ==
 217                                 PHY_STATE_LINK_UP_SPC) {
 218                                 sas_phy_disconnected(&phy->sas_phy);
 219                                 sas_notify_phy_event(&phy->sas_phy,
 220                                         PHYE_LOSS_OF_SIGNAL, GFP_KERNEL);
 221                                 phy->phy_attached = 0;
 222                         }
 223                 }
 224                 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
 225                 break;
 226         case PHY_FUNC_GET_EVENTS:
 227                 spin_lock_irqsave(&pm8001_ha->lock, flags);
 228                 if (pm8001_ha->chip_id == chip_8001) {
 229                         if (-1 == pm8001_bar4_shift(pm8001_ha,
 230                                         (phy_id < 4) ? 0x30000 : 0x40000)) {
 231                                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 232                                 return -EINVAL;
 233                         }
 234                 }
 235                 {
 236                         struct sas_phy *phy = sas_phy->phy;
 237                         u32 __iomem *qp = pm8001_ha->io_mem[2].memvirtaddr
 238                                 + 0x1034 + (0x4000 * (phy_id & 3));
 239
 240                         phy->invalid_dword_count = readl(qp);
 241                         phy->running_disparity_error_count = readl(&qp[1]);
 242                         phy->loss_of_dword_sync_count = readl(&qp[3]);
 243                         phy->phy_reset_problem_count = readl(&qp[4]);
 244                 }
 245                 if (pm8001_ha->chip_id == chip_8001)
 246                         pm8001_bar4_shift(pm8001_ha, 0);
 247                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 248                 return 0;
 249         default:
 250                 pm8001_dbg(pm8001_ha, DEVIO, "func 0x%x\n", func);
 251                 rc = -EOPNOTSUPP;
 252         }
 253         msleep(300);
 254         return rc;
 255 }
 256
 257 /**
 258   * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
 259   * command to HBA.
 260   * @shost: the scsi host data.
 261   */
 262 void pm8001_scan_start(struct Scsi_Host *shost)
 263 {
 264         int i;
 265         struct pm8001_hba_info *pm8001_ha;
 266         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 267         DECLARE_COMPLETION_ONSTACK(completion);
 268         pm8001_ha = sha->lldd_ha;
 269         /* SAS_RE_INITIALIZATION not available in SPCv/ve */
 270         if (pm8001_ha->chip_id == chip_8001)
 271                 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
 272         for (i = 0; i < pm8001_ha->chip->n_phy; ++i) {
 273                 pm8001_ha->phy[i].enable_completion = &completion;
 274                 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
 275                 wait_for_completion(&completion);
 276                 msleep(300);
 277         }
 278 }
 279
 280 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
 281 {
 282         struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
 283
 284         /* give the phy enabling interrupt event time to come in (1s
 285         * is empirically about all it takes) */
 286         if (time < HZ)
 287                 return 0;
 288         /* Wait for discovery to finish */
 289         sas_drain_work(ha);
 290         return 1;
 291 }
 292
 293 /**
 294   * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
 295   * @pm8001_ha: our hba card information
 296   * @ccb: the ccb which attached to smp task
 297   */
 298 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
 299         struct pm8001_ccb_info *ccb)
 300 {
 301         return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
 302 }
 303
 304 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
 305 {
 306         struct ata_queued_cmd *qc = task->uldd_task;
 307
 308         if (qc && ata_is_ncq(qc->tf.protocol)) {
 309                 *tag = qc->tag;
 310                 return 1;
 311         }
 312
 313         return 0;
 314 }
 315
 316 /**
 317   * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
 318   * @pm8001_ha: our hba card information
 319   * @ccb: the ccb which attached to sata task
 320   */
 321 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
 322         struct pm8001_ccb_info *ccb)
 323 {
 324         return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
 325 }
 326
 327 /**
 328   * pm8001_task_prep_internal_abort - the dispatcher function, prepare data
 329   *                                   for internal abort task
 330   * @pm8001_ha: our hba card information
 331   * @ccb: the ccb which attached to sata task
 332   */
 333 static int pm8001_task_prep_internal_abort(struct pm8001_hba_info *pm8001_ha,
 334                                            struct pm8001_ccb_info *ccb)
 335 {
 336         return PM8001_CHIP_DISP->task_abort(pm8001_ha, ccb);
 337 }
 338
 339 /**
 340   * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
 341   * @pm8001_ha: our hba card information
 342   * @ccb: the ccb which attached to TM
 343   * @tmf: the task management IU
 344   */
 345 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
 346         struct pm8001_ccb_info *ccb, struct sas_tmf_task *tmf)
 347 {
 348         return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
 349 }
 350
 351 /**
 352   * pm8001_task_prep_ssp - the dispatcher function, prepare ssp data for ssp task
 353   * @pm8001_ha: our hba card information
 354   * @ccb: the ccb which attached to ssp task
 355   */
 356 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
 357         struct pm8001_ccb_info *ccb)
 358 {
 359         return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
 360 }
 361
 362  /* Find the local port id that's attached to this device */
 363 static int sas_find_local_port_id(struct domain_device *dev)
 364 {
 365         struct domain_device *pdev = dev->parent;
 366
 367         /* Directly attached device */
 368         if (!pdev)
 369                 return dev->port->id;
 370         while (pdev) {
 371                 struct domain_device *pdev_p = pdev->parent;
 372                 if (!pdev_p)
 373                         return pdev->port->id;
 374                 pdev = pdev->parent;
 375         }
 376         return 0;
 377 }
 378
 379 #define DEV_IS_GONE(pm8001_dev) \
 380         ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)))
 381
 382
 383 static int pm8001_deliver_command(struct pm8001_hba_info *pm8001_ha,
 384                                   struct pm8001_ccb_info *ccb)
 385 {
 386         struct sas_task *task = ccb->task;
 387         enum sas_protocol task_proto = task->task_proto;
 388         struct sas_tmf_task *tmf = task->tmf;
 389         int is_tmf = !!tmf;
 390
 391         switch (task_proto) {
 392         case SAS_PROTOCOL_SMP:
 393                 return pm8001_task_prep_smp(pm8001_ha, ccb);
 394         case SAS_PROTOCOL_SSP:
 395                 if (is_tmf)
 396                         return pm8001_task_prep_ssp_tm(pm8001_ha, ccb, tmf);
 397                 return pm8001_task_prep_ssp(pm8001_ha, ccb);
 398         case SAS_PROTOCOL_SATA:
 399         case SAS_PROTOCOL_STP:
 400                 return pm8001_task_prep_ata(pm8001_ha, ccb);
 401         case SAS_PROTOCOL_INTERNAL_ABORT:
 402                 return pm8001_task_prep_internal_abort(pm8001_ha, ccb);
 403         default:
 404                 dev_err(pm8001_ha->dev, "unknown sas_task proto: 0x%x\n",
 405                         task_proto);
 406         }
 407
 408         return -EINVAL;
 409 }
 410
 411 /**
 412   * pm8001_queue_command - register for upper layer used, all IO commands sent
 413   * to HBA are from this interface.
 414   * @task: the task to be execute.
 415   * @gfp_flags: gfp_flags
 416   */
 417 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags)
 418 {
 419         struct task_status_struct *ts = &task->task_status;
 420         enum sas_protocol task_proto = task->task_proto;
 421         struct domain_device *dev = task->dev;
 422         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 423         bool internal_abort = sas_is_internal_abort(task);
 424         struct pm8001_hba_info *pm8001_ha;
 425         struct pm8001_port *port = NULL;
 426         struct pm8001_ccb_info *ccb;
 427         unsigned long flags;
 428         u32 n_elem = 0;
 429         int rc = 0;
 430
 431         if (!internal_abort && !dev->port) {
 432                 ts->resp = SAS_TASK_UNDELIVERED;
 433                 ts->stat = SAS_PHY_DOWN;
 434                 if (dev->dev_type != SAS_SATA_DEV)
 435                         task->task_done(task);
 436                 return 0;
 437         }
 438
 439         pm8001_ha = pm8001_find_ha_by_dev(dev);
 440         if (pm8001_ha->controller_fatal_error) {
 441                 ts->resp = SAS_TASK_UNDELIVERED;
 442                 task->task_done(task);
 443                 return 0;
 444         }
 445
 446         pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec device\n");
 447
 448         spin_lock_irqsave(&pm8001_ha->lock, flags);
 449
 450         pm8001_dev = dev->lldd_dev;
 451         port = &pm8001_ha->port[sas_find_local_port_id(dev)];
 452
 453         if (!internal_abort &&
 454             (DEV_IS_GONE(pm8001_dev) || !port->port_attached)) {
 455                 ts->resp = SAS_TASK_UNDELIVERED;
 456                 ts->stat = SAS_PHY_DOWN;
 457                 if (sas_protocol_ata(task_proto)) {
 458                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 459                         task->task_done(task);
 460                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 461                 } else {
 462                         task->task_done(task);
 463                 }
 464                 rc = -ENODEV;
 465                 goto err_out;
 466         }
 467
 468         ccb = pm8001_ccb_alloc(pm8001_ha, pm8001_dev, task);
 469         if (!ccb) {
 470                 rc = -SAS_QUEUE_FULL;
 471                 goto err_out;
 472         }
 473
 474         if (!sas_protocol_ata(task_proto)) {
 475                 if (task->num_scatter) {
 476                         n_elem = dma_map_sg(pm8001_ha->dev, task->scatter,
 477                                             task->num_scatter, task->data_dir);
 478                         if (!n_elem) {
 479                                 rc = -ENOMEM;
 480                                 goto err_out_ccb;
 481                         }
 482                 }
 483         } else {
 484                 n_elem = task->num_scatter;
 485         }
 486
 487         task->lldd_task = ccb;
 488         ccb->n_elem = n_elem;
 489
 490         atomic_inc(&pm8001_dev->running_req);
 491
 492         rc = pm8001_deliver_command(pm8001_ha, ccb);
 493         if (rc) {
 494                 atomic_dec(&pm8001_dev->running_req);
 495                 if (!sas_protocol_ata(task_proto) && n_elem)
 496                         dma_unmap_sg(pm8001_ha->dev, task->scatter,
 497                                      task->num_scatter, task->data_dir);
 498 err_out_ccb:
 499                 pm8001_ccb_free(pm8001_ha, ccb);
 500
 501 err_out:
 502                 pm8001_dbg(pm8001_ha, IO, "pm8001_task_exec failed[%d]!\n", rc);
 503         }
 504
 505         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 506
 507         return rc;
 508 }
 509
 510 /**
 511   * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
 512   * @pm8001_ha: our hba card information
 513   * @ccb: the ccb which attached to ssp task to free
 514   */
 515 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 516                           struct pm8001_ccb_info *ccb)
 517 {
 518         struct sas_task *task = ccb->task;
 519         struct ata_queued_cmd *qc;
 520         struct pm8001_device *pm8001_dev;
 521
 522         if (!task)
 523                 return;
 524
 525         if (!sas_protocol_ata(task->task_proto) && ccb->n_elem)
 526                 dma_unmap_sg(pm8001_ha->dev, task->scatter,
 527                              task->num_scatter, task->data_dir);
 528
 529         switch (task->task_proto) {
 530         case SAS_PROTOCOL_SMP:
 531                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
 532                         DMA_FROM_DEVICE);
 533                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
 534                         DMA_TO_DEVICE);
 535                 break;
 536
 537         case SAS_PROTOCOL_SATA:
 538         case SAS_PROTOCOL_STP:
 539         case SAS_PROTOCOL_SSP:
 540         default:
 541                 /* do nothing */
 542                 break;
 543         }
 544
 545         if (sas_protocol_ata(task->task_proto)) {
 546                 /* For SCSI/ATA commands uldd_task points to ata_queued_cmd */
 547                 qc = task->uldd_task;
 548                 pm8001_dev = ccb->device;
 549                 trace_pm80xx_request_complete(pm8001_ha->id,
 550                         pm8001_dev ? pm8001_dev->attached_phy : PM8001_MAX_PHYS,
 551                         ccb->ccb_tag, 0 /* ctlr_opcode not known */,
 552                         qc ? qc->tf.command : 0, // ata opcode
 553                         pm8001_dev ? atomic_read(&pm8001_dev->running_req) : -1);
 554         }
 555
 556         task->lldd_task = NULL;
 557         pm8001_ccb_free(pm8001_ha, ccb);
 558 }
 559
 560 /**
 561  * pm8001_alloc_dev - find a empty pm8001_device
 562  * @pm8001_ha: our hba card information
 563  */
 564 static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 565 {
 566         u32 dev;
 567         for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
 568                 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) {
 569                         pm8001_ha->devices[dev].id = dev;
 570                         return &pm8001_ha->devices[dev];
 571                 }
 572         }
 573         if (dev == PM8001_MAX_DEVICES) {
 574                 pm8001_dbg(pm8001_ha, FAIL,
 575                            "max support %d devices, ignore ..\n",
 576                            PM8001_MAX_DEVICES);
 577         }
 578         return NULL;
 579 }
 580 /**
 581   * pm8001_find_dev - find a matching pm8001_device
 582   * @pm8001_ha: our hba card information
 583   * @device_id: device ID to match against
 584   */
 585 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha,
 586                                         u32 device_id)
 587 {
 588         u32 dev;
 589         for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
 590                 if (pm8001_ha->devices[dev].device_id == device_id)
 591                         return &pm8001_ha->devices[dev];
 592         }
 593         if (dev == PM8001_MAX_DEVICES) {
 594                 pm8001_dbg(pm8001_ha, FAIL, "NO MATCHING DEVICE FOUND !!!\n");
 595         }
 596         return NULL;
 597 }
 598
 599 void pm8001_free_dev(struct pm8001_device *pm8001_dev)
 600 {
 601         u32 id = pm8001_dev->id;
 602         memset(pm8001_dev, 0, sizeof(*pm8001_dev));
 603         pm8001_dev->id = id;
 604         pm8001_dev->dev_type = SAS_PHY_UNUSED;
 605         pm8001_dev->device_id = PM8001_MAX_DEVICES;
 606         pm8001_dev->sas_device = NULL;
 607 }
 608
 609 /**
 610   * pm8001_dev_found_notify - libsas notify a device is found.
 611   * @dev: the device structure which sas layer used.
 612   *
 613   * when libsas find a sas domain device, it should tell the LLDD that
 614   * device is found, and then LLDD register this device to HBA firmware
 615   * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
 616   * device ID(according to device's sas address) and returned it to LLDD. From
 617   * now on, we communicate with HBA FW with the device ID which HBA assigned
 618   * rather than sas address. it is the necessary step for our HBA but it is
 619   * the optional for other HBA driver.
 620   */
 621 static int pm8001_dev_found_notify(struct domain_device *dev)
 622 {
 623         unsigned long flags = 0;
 624         int res = 0;
 625         struct pm8001_hba_info *pm8001_ha = NULL;
 626         struct domain_device *parent_dev = dev->parent;
 627         struct pm8001_device *pm8001_device;
 628         DECLARE_COMPLETION_ONSTACK(completion);
 629         u32 flag = 0;
 630         pm8001_ha = pm8001_find_ha_by_dev(dev);
 631         spin_lock_irqsave(&pm8001_ha->lock, flags);
 632
 633         pm8001_device = pm8001_alloc_dev(pm8001_ha);
 634         if (!pm8001_device) {
 635                 res = -1;
 636                 goto found_out;
 637         }
 638         pm8001_device->sas_device = dev;
 639         dev->lldd_dev = pm8001_device;
 640         pm8001_device->dev_type = dev->dev_type;
 641         pm8001_device->dcompletion = &completion;
 642         if (parent_dev && dev_is_expander(parent_dev->dev_type)) {
 643                 int phy_id;
 644                 struct ex_phy *phy;
 645                 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
 646                 phy_id++) {
 647                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
 648                         if (SAS_ADDR(phy->attached_sas_addr)
 649                                 == SAS_ADDR(dev->sas_addr)) {
 650                                 pm8001_device->attached_phy = phy_id;
 651                                 break;
 652                         }
 653                 }
 654                 if (phy_id == parent_dev->ex_dev.num_phys) {
 655                         pm8001_dbg(pm8001_ha, FAIL,
 656                                    "Error: no attached dev:%016llx at ex:%016llx.\n",
 657                                    SAS_ADDR(dev->sas_addr),
 658                                    SAS_ADDR(parent_dev->sas_addr));
 659                         res = -1;
 660                 }
 661         } else {
 662                 if (dev->dev_type == SAS_SATA_DEV) {
 663                         pm8001_device->attached_phy =
 664                                 dev->rphy->identify.phy_identifier;
 665                         flag = 1; /* directly sata */
 666                 }
 667         } /*register this device to HBA*/
 668         pm8001_dbg(pm8001_ha, DISC, "Found device\n");
 669         PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
 670         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 671         wait_for_completion(&completion);
 672         if (dev->dev_type == SAS_END_DEVICE)
 673                 msleep(50);
 674         pm8001_ha->flags = PM8001F_RUN_TIME;
 675         return 0;
 676 found_out:
 677         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 678         return res;
 679 }
 680
 681 int pm8001_dev_found(struct domain_device *dev)
 682 {
 683         return pm8001_dev_found_notify(dev);
 684 }
 685
 686 void pm8001_task_done(struct sas_task *task)
 687 {
 688         del_timer(&task->slow_task->timer);
 689         complete(&task->slow_task->completion);
 690 }
 691
 692 #define PM8001_TASK_TIMEOUT 20
 693
 694 /**
 695   * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
 696   * @dev: the device structure which sas layer used.
 697   */
 698 static void pm8001_dev_gone_notify(struct domain_device *dev)
 699 {
 700         unsigned long flags = 0;
 701         struct pm8001_hba_info *pm8001_ha;
 702         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 703
 704         pm8001_ha = pm8001_find_ha_by_dev(dev);
 705         spin_lock_irqsave(&pm8001_ha->lock, flags);
 706         if (pm8001_dev) {
 707                 u32 device_id = pm8001_dev->device_id;
 708
 709                 pm8001_dbg(pm8001_ha, DISC, "found dev[%d:%x] is gone.\n",
 710                            pm8001_dev->device_id, pm8001_dev->dev_type);
 711                 if (atomic_read(&pm8001_dev->running_req)) {
 712                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 713                         sas_execute_internal_abort_dev(dev, 0, NULL);
 714                         while (atomic_read(&pm8001_dev->running_req))
 715                                 msleep(20);
 716                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 717                 }
 718                 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
 719                 pm8001_free_dev(pm8001_dev);
 720         } else {
 721                 pm8001_dbg(pm8001_ha, DISC, "Found dev has gone.\n");
 722         }
 723         dev->lldd_dev = NULL;
 724         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 725 }
 726
 727 void pm8001_dev_gone(struct domain_device *dev)
 728 {
 729         pm8001_dev_gone_notify(dev);
 730 }
 731
 732 /* retry commands by ha, by task and/or by device */
 733 void pm8001_open_reject_retry(
 734         struct pm8001_hba_info *pm8001_ha,
 735         struct sas_task *task_to_close,
 736         struct pm8001_device *device_to_close)
 737 {
 738         int i;
 739         unsigned long flags;
 740
 741         if (pm8001_ha == NULL)
 742                 return;
 743
 744         spin_lock_irqsave(&pm8001_ha->lock, flags);
 745
 746         for (i = 0; i < PM8001_MAX_CCB; i++) {
 747                 struct sas_task *task;
 748                 struct task_status_struct *ts;
 749                 struct pm8001_device *pm8001_dev;
 750                 unsigned long flags1;
 751                 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
 752
 753                 if (ccb->ccb_tag == PM8001_INVALID_TAG)
 754                         continue;
 755
 756                 pm8001_dev = ccb->device;
 757                 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))
 758                         continue;
 759                 if (!device_to_close) {
 760                         uintptr_t d = (uintptr_t)pm8001_dev
 761                                         - (uintptr_t)&pm8001_ha->devices;
 762                         if (((d % sizeof(*pm8001_dev)) != 0)
 763                          || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
 764                                 continue;
 765                 } else if (pm8001_dev != device_to_close)
 766                         continue;
 767                 task = ccb->task;
 768                 if (!task || !task->task_done)
 769                         continue;
 770                 if (task_to_close && (task != task_to_close))
 771                         continue;
 772                 ts = &task->task_status;
 773                 ts->resp = SAS_TASK_COMPLETE;
 774                 /* Force the midlayer to retry */
 775                 ts->stat = SAS_OPEN_REJECT;
 776                 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
 777                 if (pm8001_dev)
 778                         atomic_dec(&pm8001_dev->running_req);
 779                 spin_lock_irqsave(&task->task_state_lock, flags1);
 780                 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
 781                 task->task_state_flags |= SAS_TASK_STATE_DONE;
 782                 if (unlikely((task->task_state_flags
 783                                 & SAS_TASK_STATE_ABORTED))) {
 784                         spin_unlock_irqrestore(&task->task_state_lock,
 785                                 flags1);
 786                         pm8001_ccb_task_free(pm8001_ha, ccb);
 787                 } else {
 788                         spin_unlock_irqrestore(&task->task_state_lock,
 789                                 flags1);
 790                         pm8001_ccb_task_free(pm8001_ha, ccb);
 791                         mb();/* in order to force CPU ordering */
 792                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 793                         task->task_done(task);
 794                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 795                 }
 796         }
 797
 798         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 799 }
 800
 801 /**
 802  * pm8001_I_T_nexus_reset() - reset the initiator/target connection
 803  * @dev: the device structure for the device to reset.
 804  *
 805  * Standard mandates link reset for ATA (type 0) and hard reset for
 806  * SSP (type 1), only for RECOVERY
 807  */
 808 int pm8001_I_T_nexus_reset(struct domain_device *dev)
 809 {
 810         int rc = TMF_RESP_FUNC_FAILED;
 811         struct pm8001_device *pm8001_dev;
 812         struct pm8001_hba_info *pm8001_ha;
 813         struct sas_phy *phy;
 814
 815         if (!dev || !dev->lldd_dev)
 816                 return -ENODEV;
 817
 818         pm8001_dev = dev->lldd_dev;
 819         pm8001_ha = pm8001_find_ha_by_dev(dev);
 820         phy = sas_get_local_phy(dev);
 821
 822         if (dev_is_sata(dev)) {
 823                 if (scsi_is_sas_phy_local(phy)) {
 824                         rc = 0;
 825                         goto out;
 826                 }
 827                 rc = sas_phy_reset(phy, 1);
 828                 if (rc) {
 829                         pm8001_dbg(pm8001_ha, EH,
 830                                    "phy reset failed for device %x\n"
 831                                    "with rc %d\n", pm8001_dev->device_id, rc);
 832                         rc = TMF_RESP_FUNC_FAILED;
 833                         goto out;
 834                 }
 835                 msleep(2000);
 836                 rc = sas_execute_internal_abort_dev(dev, 0, NULL);
 837                 if (rc) {
 838                         pm8001_dbg(pm8001_ha, EH, "task abort failed %x\n"
 839                                    "with rc %d\n", pm8001_dev->device_id, rc);
 840                         rc = TMF_RESP_FUNC_FAILED;
 841                 }
 842         } else {
 843                 rc = sas_phy_reset(phy, 1);
 844                 msleep(2000);
 845         }
 846         pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
 847                    pm8001_dev->device_id, rc);
 848  out:
 849         sas_put_local_phy(phy);
 850         return rc;
 851 }
 852
 853 /*
 854 * This function handle the IT_NEXUS_XXX event or completion
 855 * status code for SSP/SATA/SMP I/O request.
 856 */
 857 int pm8001_I_T_nexus_event_handler(struct domain_device *dev)
 858 {
 859         int rc = TMF_RESP_FUNC_FAILED;
 860         struct pm8001_device *pm8001_dev;
 861         struct pm8001_hba_info *pm8001_ha;
 862         struct sas_phy *phy;
 863
 864         if (!dev || !dev->lldd_dev)
 865                 return -1;
 866
 867         pm8001_dev = dev->lldd_dev;
 868         pm8001_ha = pm8001_find_ha_by_dev(dev);
 869
 870         pm8001_dbg(pm8001_ha, EH, "I_T_Nexus handler invoked !!\n");
 871
 872         phy = sas_get_local_phy(dev);
 873
 874         if (dev_is_sata(dev)) {
 875                 DECLARE_COMPLETION_ONSTACK(completion_setstate);
 876                 if (scsi_is_sas_phy_local(phy)) {
 877                         rc = 0;
 878                         goto out;
 879                 }
 880                 /* send internal ssp/sata/smp abort command to FW */
 881                 sas_execute_internal_abort_dev(dev, 0, NULL);
 882                 msleep(100);
 883
 884                 /* deregister the target device */
 885                 pm8001_dev_gone_notify(dev);
 886                 msleep(200);
 887
 888                 /*send phy reset to hard reset target */
 889                 rc = sas_phy_reset(phy, 1);
 890                 msleep(2000);
 891                 pm8001_dev->setds_completion = &completion_setstate;
 892
 893                 wait_for_completion(&completion_setstate);
 894         } else {
 895                 /* send internal ssp/sata/smp abort command to FW */
 896                 sas_execute_internal_abort_dev(dev, 0, NULL);
 897                 msleep(100);
 898
 899                 /* deregister the target device */
 900                 pm8001_dev_gone_notify(dev);
 901                 msleep(200);
 902
 903                 /*send phy reset to hard reset target */
 904                 rc = sas_phy_reset(phy, 1);
 905                 msleep(2000);
 906         }
 907         pm8001_dbg(pm8001_ha, EH, " for device[%x]:rc=%d\n",
 908                    pm8001_dev->device_id, rc);
 909 out:
 910         sas_put_local_phy(phy);
 911
 912         return rc;
 913 }
 914 /* mandatory SAM-3, the task reset the specified LUN*/
 915 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
 916 {
 917         int rc = TMF_RESP_FUNC_FAILED;
 918         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 919         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 920         DECLARE_COMPLETION_ONSTACK(completion_setstate);
 921         if (dev_is_sata(dev)) {
 922                 struct sas_phy *phy = sas_get_local_phy(dev);
 923                 sas_execute_internal_abort_dev(dev, 0, NULL);
 924                 rc = sas_phy_reset(phy, 1);
 925                 sas_put_local_phy(phy);
 926                 pm8001_dev->setds_completion = &completion_setstate;
 927                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 928                         pm8001_dev, DS_OPERATIONAL);
 929                 wait_for_completion(&completion_setstate);
 930         } else {
 931                 rc = sas_lu_reset(dev, lun);
 932         }
 933         /* If failed, fall-through I_T_Nexus reset */
 934         pm8001_dbg(pm8001_ha, EH, "for device[%x]:rc=%d\n",
 935                    pm8001_dev->device_id, rc);
 936         return rc;
 937 }
 938
 939 /* optional SAM-3 */
 940 int pm8001_query_task(struct sas_task *task)
 941 {
 942         u32 tag = 0xdeadbeef;
 943         int rc = TMF_RESP_FUNC_FAILED;
 944         if (unlikely(!task || !task->lldd_task || !task->dev))
 945                 return rc;
 946
 947         if (task->task_proto & SAS_PROTOCOL_SSP) {
 948                 struct scsi_cmnd *cmnd = task->uldd_task;
 949                 struct domain_device *dev = task->dev;
 950                 struct pm8001_hba_info *pm8001_ha =
 951                         pm8001_find_ha_by_dev(dev);
 952
 953                 rc = pm8001_find_tag(task, &tag);
 954                 if (rc == 0) {
 955                         rc = TMF_RESP_FUNC_FAILED;
 956                         return rc;
 957                 }
 958                 pm8001_dbg(pm8001_ha, EH, "Query:[%16ph]\n", cmnd->cmnd);
 959
 960                 rc = sas_query_task(task, tag);
 961                 switch (rc) {
 962                 /* The task is still in Lun, release it then */
 963                 case TMF_RESP_FUNC_SUCC:
 964                         pm8001_dbg(pm8001_ha, EH,
 965                                    "The task is still in Lun\n");
 966                         break;
 967                 /* The task is not in Lun or failed, reset the phy */
 968                 case TMF_RESP_FUNC_FAILED:
 969                 case TMF_RESP_FUNC_COMPLETE:
 970                         pm8001_dbg(pm8001_ha, EH,
 971                                    "The task is not in Lun or failed, reset the phy\n");
 972                         break;
 973                 }
 974         }
 975         pr_err("pm80xx: rc= %d\n", rc);
 976         return rc;
 977 }
 978
 979 /*  mandatory SAM-3, still need free task/ccb info, abort the specified task */
 980 int pm8001_abort_task(struct sas_task *task)
 981 {
 982         unsigned long flags;
 983         u32 tag;
 984         struct domain_device *dev ;
 985         struct pm8001_hba_info *pm8001_ha;
 986         struct pm8001_device *pm8001_dev;
 987         int rc = TMF_RESP_FUNC_FAILED, ret;
 988         u32 phy_id, port_id;
 989         struct sas_task_slow slow_task;
 990
 991         if (unlikely(!task || !task->lldd_task || !task->dev))
 992                 return TMF_RESP_FUNC_FAILED;
 993
 994         dev = task->dev;
 995         pm8001_dev = dev->lldd_dev;
 996         pm8001_ha = pm8001_find_ha_by_dev(dev);
 997         phy_id = pm8001_dev->attached_phy;
 998
 999         if (PM8001_CHIP_DISP->fatal_errors(pm8001_ha)) {
1000                 // If the controller is seeing fatal errors
1001                 // abort task will not get a response from the controller
1002                 return TMF_RESP_FUNC_FAILED;
1003         }
1004
1005         ret = pm8001_find_tag(task, &tag);
1006         if (ret == 0) {
1007                 pm8001_info(pm8001_ha, "no tag for task:%p\n", task);
1008                 return TMF_RESP_FUNC_FAILED;
1009         }
1010         spin_lock_irqsave(&task->task_state_lock, flags);
1011         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1012                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1013                 return TMF_RESP_FUNC_COMPLETE;
1014         }
1015         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
1016         if (task->slow_task == NULL) {
1017                 init_completion(&slow_task.completion);
1018                 task->slow_task = &slow_task;
1019         }
1020         spin_unlock_irqrestore(&task->task_state_lock, flags);
1021         if (task->task_proto & SAS_PROTOCOL_SSP) {
1022                 rc = sas_abort_task(task, tag);
1023                 sas_execute_internal_abort_single(dev, tag, 0, NULL);
1024         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1025                 task->task_proto & SAS_PROTOCOL_STP) {
1026                 if (pm8001_ha->chip_id == chip_8006) {
1027                         DECLARE_COMPLETION_ONSTACK(completion_reset);
1028                         DECLARE_COMPLETION_ONSTACK(completion);
1029                         struct pm8001_phy *phy = pm8001_ha->phy + phy_id;
1030                         port_id = phy->port->port_id;
1031
1032                         /* 1. Set Device state as Recovery */
1033                         pm8001_dev->setds_completion = &completion;
1034                         PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1035                                 pm8001_dev, DS_IN_RECOVERY);
1036                         wait_for_completion(&completion);
1037
1038                         /* 2. Send Phy Control Hard Reset */
1039                         reinit_completion(&completion);
1040                         phy->port_reset_status = PORT_RESET_TMO;
1041                         phy->reset_success = false;
1042                         phy->enable_completion = &completion;
1043                         phy->reset_completion = &completion_reset;
1044                         ret = PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
1045                                 PHY_HARD_RESET);
1046                         if (ret) {
1047                                 phy->enable_completion = NULL;
1048                                 phy->reset_completion = NULL;
1049                                 goto out;
1050                         }
1051
1052                         /* In the case of the reset timeout/fail we still
1053                          * abort the command at the firmware. The assumption
1054                          * here is that the drive is off doing something so
1055                          * that it's not processing requests, and we want to
1056                          * avoid getting a completion for this and either
1057                          * leaking the task in libsas or losing the race and
1058                          * getting a double free.
1059                          */
1060                         pm8001_dbg(pm8001_ha, MSG,
1061                                    "Waiting for local phy ctl\n");
1062                         ret = wait_for_completion_timeout(&completion,
1063                                         PM8001_TASK_TIMEOUT * HZ);
1064                         if (!ret || !phy->reset_success) {
1065                                 phy->enable_completion = NULL;
1066                                 phy->reset_completion = NULL;
1067                         } else {
1068                                 /* 3. Wait for Port Reset complete or
1069                                  * Port reset TMO
1070                                  */
1071                                 pm8001_dbg(pm8001_ha, MSG,
1072                                            "Waiting for Port reset\n");
1073                                 ret = wait_for_completion_timeout(
1074                                         &completion_reset,
1075                                         PM8001_TASK_TIMEOUT * HZ);
1076                                 if (!ret)
1077                                         phy->reset_completion = NULL;
1078                                 WARN_ON(phy->port_reset_status ==
1079                                                 PORT_RESET_TMO);
1080                                 if (phy->port_reset_status == PORT_RESET_TMO) {
1081                                         pm8001_dev_gone_notify(dev);
1082                                         PM8001_CHIP_DISP->hw_event_ack_req(
1083                                                 pm8001_ha, 0,
1084                                                 0x07, /*HW_EVENT_PHY_DOWN ack*/
1085                                                 port_id, phy_id, 0, 0);
1086                                         goto out;
1087                                 }
1088                         }
1089
1090                         /*
1091                          * 4. SATA Abort ALL
1092                          * we wait for the task to be aborted so that the task
1093                          * is removed from the ccb. on success the caller is
1094                          * going to free the task.
1095                          */
1096                         ret = sas_execute_internal_abort_dev(dev, 0, NULL);
1097                         if (ret)
1098                                 goto out;
1099                         ret = wait_for_completion_timeout(
1100                                 &task->slow_task->completion,
1101                                 PM8001_TASK_TIMEOUT * HZ);
1102                         if (!ret)
1103                                 goto out;
1104
1105                         /* 5. Set Device State as Operational */
1106                         reinit_completion(&completion);
1107                         pm8001_dev->setds_completion = &completion;
1108                         PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1109                                 pm8001_dev, DS_OPERATIONAL);
1110                         wait_for_completion(&completion);
1111                 } else {
1112                         ret = sas_execute_internal_abort_single(dev, tag, 0, NULL);
1113                 }
1114                 rc = TMF_RESP_FUNC_COMPLETE;
1115         } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1116                 /* SMP */
1117                 rc = sas_execute_internal_abort_single(dev, tag, 0, NULL);
1118
1119         }
1120 out:
1121         spin_lock_irqsave(&task->task_state_lock, flags);
1122         if (task->slow_task == &slow_task)
1123                 task->slow_task = NULL;
1124         spin_unlock_irqrestore(&task->task_state_lock, flags);
1125         if (rc != TMF_RESP_FUNC_COMPLETE)
1126                 pm8001_info(pm8001_ha, "rc= %d\n", rc);
1127         return rc;
1128 }
1129
1130 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1131 {
1132         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1133         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1134
1135         pm8001_dbg(pm8001_ha, EH, "I_T_L_Q clear task set[%x]\n",
1136                    pm8001_dev->device_id);
1137         return sas_clear_task_set(dev, lun);
1138 }
1139
1140 void pm8001_port_formed(struct asd_sas_phy *sas_phy)
1141 {
1142         struct sas_ha_struct *sas_ha = sas_phy->ha;
1143         struct pm8001_hba_info *pm8001_ha = sas_ha->lldd_ha;
1144         struct pm8001_phy *phy = sas_phy->lldd_phy;
1145         struct asd_sas_port *sas_port = sas_phy->port;
1146         struct pm8001_port *port = phy->port;
1147
1148         if (!sas_port) {
1149                 pm8001_dbg(pm8001_ha, FAIL, "Received null port\n");
1150                 return;
1151         }
1152         sas_port->lldd_port = port;
1153 }
1154
1155 void pm8001_setds_completion(struct domain_device *dev)
1156 {
1157         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1158         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1159         DECLARE_COMPLETION_ONSTACK(completion_setstate);
1160
1161         if (pm8001_ha->chip_id != chip_8001) {
1162                 pm8001_dev->setds_completion = &completion_setstate;
1163                 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1164                         pm8001_dev, DS_OPERATIONAL);
1165                 wait_for_completion(&completion_setstate);
1166         }
1167 }
1168
1169 void pm8001_tmf_aborted(struct sas_task *task)
1170 {
1171         struct pm8001_ccb_info *ccb = task->lldd_task;
1172
1173         if (ccb)
1174                 ccb->task = NULL;
1175 }