drivers/scsi/pm8001/pm8001_sas.c

   1 /*
   2  * PMC-Sierra SPC 8001 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 "pm8001_sas.h"
  42
  43 /**
  44  * pm8001_find_tag - from sas task to find out  tag that belongs to this task
  45  * @task: the task sent to the LLDD
  46  * @tag: the found tag associated with the task
  47  */
  48 static int pm8001_find_tag(struct sas_task *task, u32 *tag)
  49 {
  50         if (task->lldd_task) {
  51                 struct pm8001_ccb_info *ccb;
  52                 ccb = task->lldd_task;
  53                 *tag = ccb->ccb_tag;
  54                 return 1;
  55         }
  56         return 0;
  57 }
  58
  59 /**
  60   * pm8001_tag_clear - clear the tags bitmap
  61   * @pm8001_ha: our hba struct
  62   * @tag: the found tag associated with the task
  63   */
  64 static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag)
  65 {
  66         void *bitmap = pm8001_ha->tags;
  67         clear_bit(tag, bitmap);
  68 }
  69
  70 static void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
  71 {
  72         pm8001_tag_clear(pm8001_ha, tag);
  73 }
  74
  75 static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag)
  76 {
  77         void *bitmap = pm8001_ha->tags;
  78         set_bit(tag, bitmap);
  79 }
  80
  81 /**
  82   * pm8001_tag_alloc - allocate a empty tag for task used.
  83   * @pm8001_ha: our hba struct
  84   * @tag_out: the found empty tag .
  85   */
  86 inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
  87 {
  88         unsigned int index, tag;
  89         void *bitmap = pm8001_ha->tags;
  90
  91         index = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
  92         tag = index;
  93         if (tag >= pm8001_ha->tags_num)
  94                 return -SAS_QUEUE_FULL;
  95         pm8001_tag_set(pm8001_ha, tag);
  96         *tag_out = tag;
  97         return 0;
  98 }
  99
 100 void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
 101 {
 102         int i;
 103         for (i = 0; i < pm8001_ha->tags_num; ++i)
 104                 pm8001_tag_clear(pm8001_ha, i);
 105 }
 106
 107  /**
 108   * pm8001_mem_alloc - allocate memory for pm8001.
 109   * @pdev: pci device.
 110   * @virt_addr: the allocated virtual address
 111   * @pphys_addr_hi: the physical address high byte address.
 112   * @pphys_addr_lo: the physical address low byte address.
 113   * @mem_size: memory size.
 114   */
 115 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
 116         dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
 117         u32 *pphys_addr_lo, u32 mem_size, u32 align)
 118 {
 119         caddr_t mem_virt_alloc;
 120         dma_addr_t mem_dma_handle;
 121         u64 phys_align;
 122         u64 align_offset = 0;
 123         if (align)
 124                 align_offset = (dma_addr_t)align - 1;
 125         mem_virt_alloc =
 126                 pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle);
 127         if (!mem_virt_alloc) {
 128                 pm8001_printk("memory allocation error\n");
 129                 return -1;
 130         }
 131         memset((void *)mem_virt_alloc, 0, mem_size+align);
 132         *pphys_addr = mem_dma_handle;
 133         phys_align = (*pphys_addr + align_offset) & ~align_offset;
 134         *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
 135         *pphys_addr_hi = upper_32_bits(phys_align);
 136         *pphys_addr_lo = lower_32_bits(phys_align);
 137         return 0;
 138 }
 139 /**
 140   * pm8001_find_ha_by_dev - from domain device which come from sas layer to
 141   * find out our hba struct.
 142   * @dev: the domain device which from sas layer.
 143   */
 144 static
 145 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
 146 {
 147         struct sas_ha_struct *sha = dev->port->ha;
 148         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 149         return pm8001_ha;
 150 }
 151
 152 /**
 153   * pm8001_phy_control - this function should be registered to
 154   * sas_domain_function_template to provide libsas used, note: this is just
 155   * control the HBA phy rather than other expander phy if you want control
 156   * other phy, you should use SMP command.
 157   * @sas_phy: which phy in HBA phys.
 158   * @func: the operation.
 159   * @funcdata: always NULL.
 160   */
 161 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 162         void *funcdata)
 163 {
 164         int rc = 0, phy_id = sas_phy->id;
 165         struct pm8001_hba_info *pm8001_ha = NULL;
 166         struct sas_phy_linkrates *rates;
 167         DECLARE_COMPLETION_ONSTACK(completion);
 168         pm8001_ha = sas_phy->ha->lldd_ha;
 169         pm8001_ha->phy[phy_id].enable_completion = &completion;
 170         switch (func) {
 171         case PHY_FUNC_SET_LINK_RATE:
 172                 rates = funcdata;
 173                 if (rates->minimum_linkrate) {
 174                         pm8001_ha->phy[phy_id].minimum_linkrate =
 175                                 rates->minimum_linkrate;
 176                 }
 177                 if (rates->maximum_linkrate) {
 178                         pm8001_ha->phy[phy_id].maximum_linkrate =
 179                                 rates->maximum_linkrate;
 180                 }
 181                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 182                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 183                         wait_for_completion(&completion);
 184                 }
 185                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 186                                               PHY_LINK_RESET);
 187                 break;
 188         case PHY_FUNC_HARD_RESET:
 189                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 190                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 191                         wait_for_completion(&completion);
 192                 }
 193                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 194                                               PHY_HARD_RESET);
 195                 break;
 196         case PHY_FUNC_LINK_RESET:
 197                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 198                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 199                         wait_for_completion(&completion);
 200                 }
 201                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 202                                               PHY_LINK_RESET);
 203                 break;
 204         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 205                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 206                                               PHY_LINK_RESET);
 207                 break;
 208         case PHY_FUNC_DISABLE:
 209                 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
 210                 break;
 211         default:
 212                 rc = -EOPNOTSUPP;
 213         }
 214         msleep(300);
 215         return rc;
 216 }
 217
 218 int pm8001_slave_alloc(struct scsi_device *scsi_dev)
 219 {
 220         struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
 221         if (dev_is_sata(dev)) {
 222                 /* We don't need to rescan targets
 223                 * if REPORT_LUNS request is failed
 224                 */
 225                 if (scsi_dev->lun > 0)
 226                         return -ENXIO;
 227                 scsi_dev->tagged_supported = 1;
 228         }
 229         return sas_slave_alloc(scsi_dev);
 230 }
 231
 232 /**
 233   * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
 234   * command to HBA.
 235   * @shost: the scsi host data.
 236   */
 237 void pm8001_scan_start(struct Scsi_Host *shost)
 238 {
 239         int i;
 240         struct pm8001_hba_info *pm8001_ha;
 241         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 242         pm8001_ha = sha->lldd_ha;
 243         PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
 244         for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
 245                 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
 246 }
 247
 248 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
 249 {
 250         /* give the phy enabling interrupt event time to come in (1s
 251         * is empirically about all it takes) */
 252         if (time < HZ)
 253                 return 0;
 254         /* Wait for discovery to finish */
 255         scsi_flush_work(shost);
 256         return 1;
 257 }
 258
 259 /**
 260   * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
 261   * @pm8001_ha: our hba card information
 262   * @ccb: the ccb which attached to smp task
 263   */
 264 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
 265         struct pm8001_ccb_info *ccb)
 266 {
 267         return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
 268 }
 269
 270 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
 271 {
 272         struct ata_queued_cmd *qc = task->uldd_task;
 273         if (qc) {
 274                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 275                         qc->tf.command == ATA_CMD_FPDMA_READ) {
 276                         *tag = qc->tag;
 277                         return 1;
 278                 }
 279         }
 280         return 0;
 281 }
 282
 283 /**
 284   * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
 285   * @pm8001_ha: our hba card information
 286   * @ccb: the ccb which attached to sata task
 287   */
 288 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
 289         struct pm8001_ccb_info *ccb)
 290 {
 291         return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
 292 }
 293
 294 /**
 295   * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
 296   * @pm8001_ha: our hba card information
 297   * @ccb: the ccb which attached to TM
 298   * @tmf: the task management IU
 299   */
 300 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
 301         struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
 302 {
 303         return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
 304 }
 305
 306 /**
 307   * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
 308   * @pm8001_ha: our hba card information
 309   * @ccb: the ccb which attached to ssp task
 310   */
 311 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
 312         struct pm8001_ccb_info *ccb)
 313 {
 314         return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
 315 }
 316 int pm8001_slave_configure(struct scsi_device *sdev)
 317 {
 318         struct domain_device *dev = sdev_to_domain_dev(sdev);
 319         int ret = sas_slave_configure(sdev);
 320         if (ret)
 321                 return ret;
 322         if (dev_is_sata(dev)) {
 323         #ifdef PM8001_DISABLE_NCQ
 324                 struct ata_port *ap = dev->sata_dev.ap;
 325                 struct ata_device *adev = ap->link.device;
 326                 adev->flags |= ATA_DFLAG_NCQ_OFF;
 327                 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1);
 328         #endif
 329         }
 330         return 0;
 331 }
 332  /* Find the local port id that's attached to this device */
 333 static int sas_find_local_port_id(struct domain_device *dev)
 334 {
 335         struct domain_device *pdev = dev->parent;
 336
 337         /* Directly attached device */
 338         if (!pdev)
 339                 return dev->port->id;
 340         while (pdev) {
 341                 struct domain_device *pdev_p = pdev->parent;
 342                 if (!pdev_p)
 343                         return pdev->port->id;
 344                 pdev = pdev->parent;
 345         }
 346         return 0;
 347 }
 348
 349 /**
 350   * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
 351   * @task: the task to be execute.
 352   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 353   * we always execute one one time.
 354   * @gfp_flags: gfp_flags.
 355   * @is_tmf: if it is task management task.
 356   * @tmf: the task management IU
 357   */
 358 #define DEV_IS_GONE(pm8001_dev) \
 359         ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
 360 static int pm8001_task_exec(struct sas_task *task, const int num,
 361         gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
 362 {
 363         struct domain_device *dev = task->dev;
 364         struct pm8001_hba_info *pm8001_ha;
 365         struct pm8001_device *pm8001_dev;
 366         struct pm8001_port *port = NULL;
 367         struct sas_task *t = task;
 368         struct pm8001_ccb_info *ccb;
 369         u32 tag = 0xdeadbeef, rc, n_elem = 0;
 370         u32 n = num;
 371         unsigned long flags = 0, flags_libsas = 0;
 372
 373         if (!dev->port) {
 374                 struct task_status_struct *tsm = &t->task_status;
 375                 tsm->resp = SAS_TASK_UNDELIVERED;
 376                 tsm->stat = SAS_PHY_DOWN;
 377                 if (dev->dev_type != SATA_DEV)
 378                         t->task_done(t);
 379                 return 0;
 380         }
 381         pm8001_ha = pm8001_find_ha_by_dev(task->dev);
 382         PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
 383         spin_lock_irqsave(&pm8001_ha->lock, flags);
 384         do {
 385                 dev = t->dev;
 386                 pm8001_dev = dev->lldd_dev;
 387                 if (DEV_IS_GONE(pm8001_dev)) {
 388                         if (pm8001_dev) {
 389                                 PM8001_IO_DBG(pm8001_ha,
 390                                         pm8001_printk("device %d not ready.\n",
 391                                         pm8001_dev->device_id));
 392                         } else {
 393                                 PM8001_IO_DBG(pm8001_ha,
 394                                         pm8001_printk("device %016llx not "
 395                                         "ready.\n", SAS_ADDR(dev->sas_addr)));
 396                         }
 397                         rc = SAS_PHY_DOWN;
 398                         goto out_done;
 399                 }
 400                 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
 401                 if (!port->port_attached) {
 402                         if (sas_protocol_ata(t->task_proto)) {
 403                                 struct task_status_struct *ts = &t->task_status;
 404                                 ts->resp = SAS_TASK_UNDELIVERED;
 405                                 ts->stat = SAS_PHY_DOWN;
 406
 407                                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 408                                 spin_unlock_irqrestore(dev->sata_dev.ap->lock,
 409                                                 flags_libsas);
 410                                 t->task_done(t);
 411                                 spin_lock_irqsave(dev->sata_dev.ap->lock,
 412                                         flags_libsas);
 413                                 spin_lock_irqsave(&pm8001_ha->lock, flags);
 414                                 if (n > 1)
 415                                         t = list_entry(t->list.next,
 416                                                         struct sas_task, list);
 417                                 continue;
 418                         } else {
 419                                 struct task_status_struct *ts = &t->task_status;
 420                                 ts->resp = SAS_TASK_UNDELIVERED;
 421                                 ts->stat = SAS_PHY_DOWN;
 422                                 t->task_done(t);
 423                                 if (n > 1)
 424                                         t = list_entry(t->list.next,
 425                                                         struct sas_task, list);
 426                                 continue;
 427                         }
 428                 }
 429                 rc = pm8001_tag_alloc(pm8001_ha, &tag);
 430                 if (rc)
 431                         goto err_out;
 432                 ccb = &pm8001_ha->ccb_info[tag];
 433
 434                 if (!sas_protocol_ata(t->task_proto)) {
 435                         if (t->num_scatter) {
 436                                 n_elem = dma_map_sg(pm8001_ha->dev,
 437                                         t->scatter,
 438                                         t->num_scatter,
 439                                         t->data_dir);
 440                                 if (!n_elem) {
 441                                         rc = -ENOMEM;
 442                                         goto err_out_tag;
 443                                 }
 444                         }
 445                 } else {
 446                         n_elem = t->num_scatter;
 447                 }
 448
 449                 t->lldd_task = ccb;
 450                 ccb->n_elem = n_elem;
 451                 ccb->ccb_tag = tag;
 452                 ccb->task = t;
 453                 switch (t->task_proto) {
 454                 case SAS_PROTOCOL_SMP:
 455                         rc = pm8001_task_prep_smp(pm8001_ha, ccb);
 456                         break;
 457                 case SAS_PROTOCOL_SSP:
 458                         if (is_tmf)
 459                                 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
 460                                         ccb, tmf);
 461                         else
 462                                 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
 463                         break;
 464                 case SAS_PROTOCOL_SATA:
 465                 case SAS_PROTOCOL_STP:
 466                 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 467                         rc = pm8001_task_prep_ata(pm8001_ha, ccb);
 468                         break;
 469                 default:
 470                         dev_printk(KERN_ERR, pm8001_ha->dev,
 471                                 "unknown sas_task proto: 0x%x\n",
 472                                 t->task_proto);
 473                         rc = -EINVAL;
 474                         break;
 475                 }
 476
 477                 if (rc) {
 478                         PM8001_IO_DBG(pm8001_ha,
 479                                 pm8001_printk("rc is %x\n", rc));
 480                         goto err_out_tag;
 481                 }
 482                 /* TODO: select normal or high priority */
 483                 spin_lock(&t->task_state_lock);
 484                 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
 485                 spin_unlock(&t->task_state_lock);
 486                 pm8001_dev->running_req++;
 487                 if (n > 1)
 488                         t = list_entry(t->list.next, struct sas_task, list);
 489         } while (--n);
 490         rc = 0;
 491         goto out_done;
 492
 493 err_out_tag:
 494         pm8001_tag_free(pm8001_ha, tag);
 495 err_out:
 496         dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
 497         if (!sas_protocol_ata(t->task_proto))
 498                 if (n_elem)
 499                         dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
 500                                 t->data_dir);
 501 out_done:
 502         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 503         return rc;
 504 }
 505
 506 /**
 507   * pm8001_queue_command - register for upper layer used, all IO commands sent
 508   * to HBA are from this interface.
 509   * @task: the task to be execute.
 510   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 511   * we always execute one one time
 512   * @gfp_flags: gfp_flags
 513   */
 514 int pm8001_queue_command(struct sas_task *task, const int num,
 515                 gfp_t gfp_flags)
 516 {
 517         return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
 518 }
 519
 520 void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
 521 {
 522         pm8001_tag_clear(pm8001_ha, ccb_idx);
 523 }
 524
 525 /**
 526   * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
 527   * @pm8001_ha: our hba card information
 528   * @ccb: the ccb which attached to ssp task
 529   * @task: the task to be free.
 530   * @ccb_idx: ccb index.
 531   */
 532 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 533         struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
 534 {
 535         if (!ccb->task)
 536                 return;
 537         if (!sas_protocol_ata(task->task_proto))
 538                 if (ccb->n_elem)
 539                         dma_unmap_sg(pm8001_ha->dev, task->scatter,
 540                                 task->num_scatter, task->data_dir);
 541
 542         switch (task->task_proto) {
 543         case SAS_PROTOCOL_SMP:
 544                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
 545                         PCI_DMA_FROMDEVICE);
 546                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
 547                         PCI_DMA_TODEVICE);
 548                 break;
 549
 550         case SAS_PROTOCOL_SATA:
 551         case SAS_PROTOCOL_STP:
 552         case SAS_PROTOCOL_SSP:
 553         default:
 554                 /* do nothing */
 555                 break;
 556         }
 557         task->lldd_task = NULL;
 558         ccb->task = NULL;
 559         ccb->ccb_tag = 0xFFFFFFFF;
 560         pm8001_ccb_free(pm8001_ha, ccb_idx);
 561 }
 562
 563  /**
 564   * pm8001_alloc_dev - find a empty pm8001_device
 565   * @pm8001_ha: our hba card information
 566   */
 567 struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 568 {
 569         u32 dev;
 570         for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
 571                 if (pm8001_ha->devices[dev].dev_type == NO_DEVICE) {
 572                         pm8001_ha->devices[dev].id = dev;
 573                         return &pm8001_ha->devices[dev];
 574                 }
 575         }
 576         if (dev == PM8001_MAX_DEVICES) {
 577                 PM8001_FAIL_DBG(pm8001_ha,
 578                         pm8001_printk("max support %d devices, ignore ..\n",
 579                         PM8001_MAX_DEVICES));
 580         }
 581         return NULL;
 582 }
 583
 584 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
 585 {
 586         u32 id = pm8001_dev->id;
 587         memset(pm8001_dev, 0, sizeof(*pm8001_dev));
 588         pm8001_dev->id = id;
 589         pm8001_dev->dev_type = NO_DEVICE;
 590         pm8001_dev->device_id = PM8001_MAX_DEVICES;
 591         pm8001_dev->sas_device = NULL;
 592 }
 593
 594 /**
 595   * pm8001_dev_found_notify - libsas notify a device is found.
 596   * @dev: the device structure which sas layer used.
 597   *
 598   * when libsas find a sas domain device, it should tell the LLDD that
 599   * device is found, and then LLDD register this device to HBA firmware
 600   * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
 601   * device ID(according to device's sas address) and returned it to LLDD. From
 602   * now on, we communicate with HBA FW with the device ID which HBA assigned
 603   * rather than sas address. it is the necessary step for our HBA but it is
 604   * the optional for other HBA driver.
 605   */
 606 static int pm8001_dev_found_notify(struct domain_device *dev)
 607 {
 608         unsigned long flags = 0;
 609         int res = 0;
 610         struct pm8001_hba_info *pm8001_ha = NULL;
 611         struct domain_device *parent_dev = dev->parent;
 612         struct pm8001_device *pm8001_device;
 613         DECLARE_COMPLETION_ONSTACK(completion);
 614         u32 flag = 0;
 615         pm8001_ha = pm8001_find_ha_by_dev(dev);
 616         spin_lock_irqsave(&pm8001_ha->lock, flags);
 617
 618         pm8001_device = pm8001_alloc_dev(pm8001_ha);
 619         if (!pm8001_device) {
 620                 res = -1;
 621                 goto found_out;
 622         }
 623         pm8001_device->sas_device = dev;
 624         dev->lldd_dev = pm8001_device;
 625         pm8001_device->dev_type = dev->dev_type;
 626         pm8001_device->dcompletion = &completion;
 627         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
 628                 int phy_id;
 629                 struct ex_phy *phy;
 630                 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
 631                 phy_id++) {
 632                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
 633                         if (SAS_ADDR(phy->attached_sas_addr)
 634                                 == SAS_ADDR(dev->sas_addr)) {
 635                                 pm8001_device->attached_phy = phy_id;
 636                                 break;
 637                         }
 638                 }
 639                 if (phy_id == parent_dev->ex_dev.num_phys) {
 640                         PM8001_FAIL_DBG(pm8001_ha,
 641                         pm8001_printk("Error: no attached dev:%016llx"
 642                         " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
 643                                 SAS_ADDR(parent_dev->sas_addr)));
 644                         res = -1;
 645                 }
 646         } else {
 647                 if (dev->dev_type == SATA_DEV) {
 648                         pm8001_device->attached_phy =
 649                                 dev->rphy->identify.phy_identifier;
 650                                 flag = 1; /* directly sata*/
 651                 }
 652         } /*register this device to HBA*/
 653         PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device \n"));
 654         PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
 655         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 656         wait_for_completion(&completion);
 657         if (dev->dev_type == SAS_END_DEV)
 658                 msleep(50);
 659         pm8001_ha->flags |= PM8001F_RUN_TIME ;
 660         return 0;
 661 found_out:
 662         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 663         return res;
 664 }
 665
 666 int pm8001_dev_found(struct domain_device *dev)
 667 {
 668         return pm8001_dev_found_notify(dev);
 669 }
 670
 671 /**
 672   * pm8001_alloc_task - allocate a task structure for TMF
 673   */
 674 static struct sas_task *pm8001_alloc_task(void)
 675 {
 676         struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
 677         if (task) {
 678                 INIT_LIST_HEAD(&task->list);
 679                 spin_lock_init(&task->task_state_lock);
 680                 task->task_state_flags = SAS_TASK_STATE_PENDING;
 681                 init_timer(&task->timer);
 682                 init_completion(&task->completion);
 683         }
 684         return task;
 685 }
 686
 687 static void pm8001_free_task(struct sas_task *task)
 688 {
 689         if (task) {
 690                 BUG_ON(!list_empty(&task->list));
 691                 kfree(task);
 692         }
 693 }
 694
 695 static void pm8001_task_done(struct sas_task *task)
 696 {
 697         if (!del_timer(&task->timer))
 698                 return;
 699         complete(&task->completion);
 700 }
 701
 702 static void pm8001_tmf_timedout(unsigned long data)
 703 {
 704         struct sas_task *task = (struct sas_task *)data;
 705
 706         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 707         complete(&task->completion);
 708 }
 709
 710 #define PM8001_TASK_TIMEOUT 20
 711 /**
 712   * pm8001_exec_internal_tmf_task - execute some task management commands.
 713   * @dev: the wanted device.
 714   * @tmf: which task management wanted to be take.
 715   * @para_len: para_len.
 716   * @parameter: ssp task parameter.
 717   *
 718   * when errors or exception happened, we may want to do something, for example
 719   * abort the issued task which result in this execption, it is done by calling
 720   * this function, note it is also with the task execute interface.
 721   */
 722 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
 723         void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
 724 {
 725         int res, retry;
 726         struct sas_task *task = NULL;
 727         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 728
 729         for (retry = 0; retry < 3; retry++) {
 730                 task = pm8001_alloc_task();
 731                 if (!task)
 732                         return -ENOMEM;
 733
 734                 task->dev = dev;
 735                 task->task_proto = dev->tproto;
 736                 memcpy(&task->ssp_task, parameter, para_len);
 737                 task->task_done = pm8001_task_done;
 738                 task->timer.data = (unsigned long)task;
 739                 task->timer.function = pm8001_tmf_timedout;
 740                 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
 741                 add_timer(&task->timer);
 742
 743                 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
 744
 745                 if (res) {
 746                         del_timer(&task->timer);
 747                         PM8001_FAIL_DBG(pm8001_ha,
 748                                 pm8001_printk("Executing internal task "
 749                                 "failed\n"));
 750                         goto ex_err;
 751                 }
 752                 wait_for_completion(&task->completion);
 753                 res = -TMF_RESP_FUNC_FAILED;
 754                 /* Even TMF timed out, return direct. */
 755                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 756                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 757                                 PM8001_FAIL_DBG(pm8001_ha,
 758                                         pm8001_printk("TMF task[%x]timeout.\n",
 759                                         tmf->tmf));
 760                                 goto ex_err;
 761                         }
 762                 }
 763
 764                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 765                         task->task_status.stat == SAM_GOOD) {
 766                         res = TMF_RESP_FUNC_COMPLETE;
 767                         break;
 768                 }
 769
 770                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 771                 task->task_status.stat == SAS_DATA_UNDERRUN) {
 772                         /* no error, but return the number of bytes of
 773                         * underrun */
 774                         res = task->task_status.residual;
 775                         break;
 776                 }
 777
 778                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 779                         task->task_status.stat == SAS_DATA_OVERRUN) {
 780                         PM8001_FAIL_DBG(pm8001_ha,
 781                                 pm8001_printk("Blocked task error.\n"));
 782                         res = -EMSGSIZE;
 783                         break;
 784                 } else {
 785                         PM8001_EH_DBG(pm8001_ha,
 786                                 pm8001_printk(" Task to dev %016llx response:"
 787                                 "0x%x status 0x%x\n",
 788                                 SAS_ADDR(dev->sas_addr),
 789                                 task->task_status.resp,
 790                                 task->task_status.stat));
 791                         pm8001_free_task(task);
 792                         task = NULL;
 793                 }
 794         }
 795 ex_err:
 796         BUG_ON(retry == 3 && task != NULL);
 797         if (task != NULL)
 798                 pm8001_free_task(task);
 799         return res;
 800 }
 801
 802 static int
 803 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
 804         struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
 805         u32 task_tag)
 806 {
 807         int res, retry;
 808         u32 ccb_tag;
 809         struct pm8001_ccb_info *ccb;
 810         struct sas_task *task = NULL;
 811
 812         for (retry = 0; retry < 3; retry++) {
 813                 task = pm8001_alloc_task();
 814                 if (!task)
 815                         return -ENOMEM;
 816
 817                 task->dev = dev;
 818                 task->task_proto = dev->tproto;
 819                 task->task_done = pm8001_task_done;
 820                 task->timer.data = (unsigned long)task;
 821                 task->timer.function = pm8001_tmf_timedout;
 822                 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
 823                 add_timer(&task->timer);
 824
 825                 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
 826                 if (res)
 827                         return res;
 828                 ccb = &pm8001_ha->ccb_info[ccb_tag];
 829                 ccb->device = pm8001_dev;
 830                 ccb->ccb_tag = ccb_tag;
 831                 ccb->task = task;
 832
 833                 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
 834                         pm8001_dev, flag, task_tag, ccb_tag);
 835
 836                 if (res) {
 837                         del_timer(&task->timer);
 838                         PM8001_FAIL_DBG(pm8001_ha,
 839                                 pm8001_printk("Executing internal task "
 840                                 "failed\n"));
 841                         goto ex_err;
 842                 }
 843                 wait_for_completion(&task->completion);
 844                 res = TMF_RESP_FUNC_FAILED;
 845                 /* Even TMF timed out, return direct. */
 846                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 847                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 848                                 PM8001_FAIL_DBG(pm8001_ha,
 849                                         pm8001_printk("TMF task timeout.\n"));
 850                                 goto ex_err;
 851                         }
 852                 }
 853
 854                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 855                         task->task_status.stat == SAM_GOOD) {
 856                         res = TMF_RESP_FUNC_COMPLETE;
 857                         break;
 858
 859                 } else {
 860                         PM8001_EH_DBG(pm8001_ha,
 861                                 pm8001_printk(" Task to dev %016llx response: "
 862                                         "0x%x status 0x%x\n",
 863                                 SAS_ADDR(dev->sas_addr),
 864                                 task->task_status.resp,
 865                                 task->task_status.stat));
 866                         pm8001_free_task(task);
 867                         task = NULL;
 868                 }
 869         }
 870 ex_err:
 871         BUG_ON(retry == 3 && task != NULL);
 872         if (task != NULL)
 873                 pm8001_free_task(task);
 874         return res;
 875 }
 876
 877 /**
 878   * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
 879   * @dev: the device structure which sas layer used.
 880   */
 881 static void pm8001_dev_gone_notify(struct domain_device *dev)
 882 {
 883         unsigned long flags = 0;
 884         u32 tag;
 885         struct pm8001_hba_info *pm8001_ha;
 886         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 887         u32 device_id = pm8001_dev->device_id;
 888         pm8001_ha = pm8001_find_ha_by_dev(dev);
 889         spin_lock_irqsave(&pm8001_ha->lock, flags);
 890         pm8001_tag_alloc(pm8001_ha, &tag);
 891         if (pm8001_dev) {
 892                 PM8001_DISC_DBG(pm8001_ha,
 893                         pm8001_printk("found dev[%d:%x] is gone.\n",
 894                         pm8001_dev->device_id, pm8001_dev->dev_type));
 895                 if (pm8001_dev->running_req) {
 896                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 897                         pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 898                                 dev, 1, 0);
 899                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 900                 }
 901                 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
 902                 pm8001_free_dev(pm8001_dev);
 903         } else {
 904                 PM8001_DISC_DBG(pm8001_ha,
 905                         pm8001_printk("Found dev has gone.\n"));
 906         }
 907         dev->lldd_dev = NULL;
 908         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 909 }
 910
 911 void pm8001_dev_gone(struct domain_device *dev)
 912 {
 913         pm8001_dev_gone_notify(dev);
 914 }
 915
 916 static int pm8001_issue_ssp_tmf(struct domain_device *dev,
 917         u8 *lun, struct pm8001_tmf_task *tmf)
 918 {
 919         struct sas_ssp_task ssp_task;
 920         if (!(dev->tproto & SAS_PROTOCOL_SSP))
 921                 return TMF_RESP_FUNC_ESUPP;
 922
 923         strncpy((u8 *)&ssp_task.LUN, lun, 8);
 924         return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
 925                 tmf);
 926 }
 927
 928 /**
 929   * Standard mandates link reset for ATA  (type 0) and hard reset for
 930   * SSP (type 1) , only for RECOVERY
 931   */
 932 int pm8001_I_T_nexus_reset(struct domain_device *dev)
 933 {
 934         int rc = TMF_RESP_FUNC_FAILED;
 935         struct pm8001_device *pm8001_dev;
 936         struct pm8001_hba_info *pm8001_ha;
 937         struct sas_phy *phy;
 938         if (!dev || !dev->lldd_dev)
 939                 return -1;
 940
 941         pm8001_dev = dev->lldd_dev;
 942         pm8001_ha = pm8001_find_ha_by_dev(dev);
 943         phy = sas_find_local_phy(dev);
 944
 945         if (dev_is_sata(dev)) {
 946                 DECLARE_COMPLETION_ONSTACK(completion_setstate);
 947                 if (scsi_is_sas_phy_local(phy))
 948                         return 0;
 949                 rc = sas_phy_reset(phy, 1);
 950                 msleep(2000);
 951                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 952                         dev, 1, 0);
 953                 pm8001_dev->setds_completion = &completion_setstate;
 954                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 955                         pm8001_dev, 0x01);
 956                 wait_for_completion(&completion_setstate);
 957         } else{
 958         rc = sas_phy_reset(phy, 1);
 959         msleep(2000);
 960         }
 961         PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
 962                 pm8001_dev->device_id, rc));
 963         return rc;
 964 }
 965
 966 /* mandatory SAM-3, the task reset the specified LUN*/
 967 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
 968 {
 969         int rc = TMF_RESP_FUNC_FAILED;
 970         struct pm8001_tmf_task tmf_task;
 971         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 972         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 973         if (dev_is_sata(dev)) {
 974                 struct sas_phy *phy = sas_find_local_phy(dev);
 975                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 976                         dev, 1, 0);
 977                 rc = sas_phy_reset(phy, 1);
 978                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 979                         pm8001_dev, 0x01);
 980                 msleep(2000);
 981         } else {
 982                 tmf_task.tmf = TMF_LU_RESET;
 983                 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
 984         }
 985         /* If failed, fall-through I_T_Nexus reset */
 986         PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
 987                 pm8001_dev->device_id, rc));
 988         return rc;
 989 }
 990
 991 /* optional SAM-3 */
 992 int pm8001_query_task(struct sas_task *task)
 993 {
 994         u32 tag = 0xdeadbeef;
 995         int i = 0;
 996         struct scsi_lun lun;
 997         struct pm8001_tmf_task tmf_task;
 998         int rc = TMF_RESP_FUNC_FAILED;
 999         if (unlikely(!task || !task->lldd_task || !task->dev))
1000                 return rc;
1001
1002         if (task->task_proto & SAS_PROTOCOL_SSP) {
1003                 struct scsi_cmnd *cmnd = task->uldd_task;
1004                 struct domain_device *dev = task->dev;
1005                 struct pm8001_hba_info *pm8001_ha =
1006                         pm8001_find_ha_by_dev(dev);
1007
1008                 int_to_scsilun(cmnd->device->lun, &lun);
1009                 rc = pm8001_find_tag(task, &tag);
1010                 if (rc == 0) {
1011                         rc = TMF_RESP_FUNC_FAILED;
1012                         return rc;
1013                 }
1014                 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1015                 for (i = 0; i < 16; i++)
1016                         printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1017                 printk(KERN_INFO "]\n");
1018                 tmf_task.tmf =  TMF_QUERY_TASK;
1019                 tmf_task.tag_of_task_to_be_managed = tag;
1020
1021                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1022                 switch (rc) {
1023                 /* The task is still in Lun, release it then */
1024                 case TMF_RESP_FUNC_SUCC:
1025                         PM8001_EH_DBG(pm8001_ha,
1026                                 pm8001_printk("The task is still in Lun \n"));
1027                 /* The task is not in Lun or failed, reset the phy */
1028                 case TMF_RESP_FUNC_FAILED:
1029                 case TMF_RESP_FUNC_COMPLETE:
1030                         PM8001_EH_DBG(pm8001_ha,
1031                         pm8001_printk("The task is not in Lun or failed,"
1032                         " reset the phy \n"));
1033                         break;
1034                 }
1035         }
1036         pm8001_printk(":rc= %d\n", rc);
1037         return rc;
1038 }
1039
1040 /*  mandatory SAM-3, still need free task/ccb info, abord the specified task */
1041 int pm8001_abort_task(struct sas_task *task)
1042 {
1043         unsigned long flags;
1044         u32 tag = 0xdeadbeef;
1045         u32 device_id;
1046         struct domain_device *dev ;
1047         struct pm8001_hba_info *pm8001_ha = NULL;
1048         struct pm8001_ccb_info *ccb;
1049         struct scsi_lun lun;
1050         struct pm8001_device *pm8001_dev;
1051         struct pm8001_tmf_task tmf_task;
1052         int rc = TMF_RESP_FUNC_FAILED;
1053         if (unlikely(!task || !task->lldd_task || !task->dev))
1054                 return rc;
1055         spin_lock_irqsave(&task->task_state_lock, flags);
1056         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1057                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1058                 rc = TMF_RESP_FUNC_COMPLETE;
1059                 goto out;
1060         }
1061         spin_unlock_irqrestore(&task->task_state_lock, flags);
1062         if (task->task_proto & SAS_PROTOCOL_SSP) {
1063                 struct scsi_cmnd *cmnd = task->uldd_task;
1064                 dev = task->dev;
1065                 ccb = task->lldd_task;
1066                 pm8001_dev = dev->lldd_dev;
1067                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1068                 int_to_scsilun(cmnd->device->lun, &lun);
1069                 rc = pm8001_find_tag(task, &tag);
1070                 if (rc == 0) {
1071                         printk(KERN_INFO "No such tag in %s\n", __func__);
1072                         rc = TMF_RESP_FUNC_FAILED;
1073                         return rc;
1074                 }
1075                 device_id = pm8001_dev->device_id;
1076                 PM8001_EH_DBG(pm8001_ha,
1077                         pm8001_printk("abort io to deviceid= %d\n", device_id));
1078                 tmf_task.tmf = TMF_ABORT_TASK;
1079                 tmf_task.tag_of_task_to_be_managed = tag;
1080                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1081                 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1082                         pm8001_dev->sas_device, 0, tag);
1083         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1084                 task->task_proto & SAS_PROTOCOL_STP) {
1085                 dev = task->dev;
1086                 pm8001_dev = dev->lldd_dev;
1087                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1088                 rc = pm8001_find_tag(task, &tag);
1089                 if (rc == 0) {
1090                         printk(KERN_INFO "No such tag in %s\n", __func__);
1091                         rc = TMF_RESP_FUNC_FAILED;
1092                         return rc;
1093                 }
1094                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1095                         pm8001_dev->sas_device, 0, tag);
1096         } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1097                 /* SMP */
1098                 dev = task->dev;
1099                 pm8001_dev = dev->lldd_dev;
1100                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1101                 rc = pm8001_find_tag(task, &tag);
1102                 if (rc == 0) {
1103                         printk(KERN_INFO "No such tag in %s\n", __func__);
1104                         rc = TMF_RESP_FUNC_FAILED;
1105                         return rc;
1106                 }
1107                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1108                         pm8001_dev->sas_device, 0, tag);
1109
1110         }
1111 out:
1112         if (rc != TMF_RESP_FUNC_COMPLETE)
1113                 pm8001_printk("rc= %d\n", rc);
1114         return rc;
1115 }
1116
1117 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1118 {
1119         int rc = TMF_RESP_FUNC_FAILED;
1120         struct pm8001_tmf_task tmf_task;
1121
1122         tmf_task.tmf = TMF_ABORT_TASK_SET;
1123         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1124         return rc;
1125 }
1126
1127 int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1128 {
1129         int rc = TMF_RESP_FUNC_FAILED;
1130         struct pm8001_tmf_task tmf_task;
1131
1132         tmf_task.tmf = TMF_CLEAR_ACA;
1133         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1134
1135         return rc;
1136 }
1137
1138 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1139 {
1140         int rc = TMF_RESP_FUNC_FAILED;
1141         struct pm8001_tmf_task tmf_task;
1142         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1143         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1144
1145         PM8001_EH_DBG(pm8001_ha,
1146                 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1147                 pm8001_dev->device_id));
1148         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1149         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1150         return rc;
1151 }
1152