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 <linux/slab.h>
  42 #include "pm8001_sas.h"
  43
  44 /**
  45  * pm8001_find_tag - from sas task to find out  tag that belongs to this task
  46  * @task: the task sent to the LLDD
  47  * @tag: the found tag associated with the task
  48  */
  49 static int pm8001_find_tag(struct sas_task *task, u32 *tag)
  50 {
  51         if (task->lldd_task) {
  52                 struct pm8001_ccb_info *ccb;
  53                 ccb = task->lldd_task;
  54                 *tag = ccb->ccb_tag;
  55                 return 1;
  56         }
  57         return 0;
  58 }
  59
  60 /**
  61   * pm8001_tag_clear - clear the tags bitmap
  62   * @pm8001_ha: our hba struct
  63   * @tag: the found tag associated with the task
  64   */
  65 static void pm8001_tag_clear(struct pm8001_hba_info *pm8001_ha, u32 tag)
  66 {
  67         void *bitmap = pm8001_ha->tags;
  68         clear_bit(tag, bitmap);
  69 }
  70
  71 static void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag)
  72 {
  73         pm8001_tag_clear(pm8001_ha, tag);
  74 }
  75
  76 static void pm8001_tag_set(struct pm8001_hba_info *pm8001_ha, u32 tag)
  77 {
  78         void *bitmap = pm8001_ha->tags;
  79         set_bit(tag, bitmap);
  80 }
  81
  82 /**
  83   * pm8001_tag_alloc - allocate a empty tag for task used.
  84   * @pm8001_ha: our hba struct
  85   * @tag_out: the found empty tag .
  86   */
  87 inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out)
  88 {
  89         unsigned int index, tag;
  90         void *bitmap = pm8001_ha->tags;
  91
  92         index = find_first_zero_bit(bitmap, pm8001_ha->tags_num);
  93         tag = index;
  94         if (tag >= pm8001_ha->tags_num)
  95                 return -SAS_QUEUE_FULL;
  96         pm8001_tag_set(pm8001_ha, tag);
  97         *tag_out = tag;
  98         return 0;
  99 }
 100
 101 void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha)
 102 {
 103         int i;
 104         for (i = 0; i < pm8001_ha->tags_num; ++i)
 105                 pm8001_tag_clear(pm8001_ha, i);
 106 }
 107
 108  /**
 109   * pm8001_mem_alloc - allocate memory for pm8001.
 110   * @pdev: pci device.
 111   * @virt_addr: the allocated virtual address
 112   * @pphys_addr_hi: the physical address high byte address.
 113   * @pphys_addr_lo: the physical address low byte address.
 114   * @mem_size: memory size.
 115   */
 116 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr,
 117         dma_addr_t *pphys_addr, u32 *pphys_addr_hi,
 118         u32 *pphys_addr_lo, u32 mem_size, u32 align)
 119 {
 120         caddr_t mem_virt_alloc;
 121         dma_addr_t mem_dma_handle;
 122         u64 phys_align;
 123         u64 align_offset = 0;
 124         if (align)
 125                 align_offset = (dma_addr_t)align - 1;
 126         mem_virt_alloc =
 127                 pci_alloc_consistent(pdev, mem_size + align, &mem_dma_handle);
 128         if (!mem_virt_alloc) {
 129                 pm8001_printk("memory allocation error\n");
 130                 return -1;
 131         }
 132         memset((void *)mem_virt_alloc, 0, mem_size+align);
 133         *pphys_addr = mem_dma_handle;
 134         phys_align = (*pphys_addr + align_offset) & ~align_offset;
 135         *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr;
 136         *pphys_addr_hi = upper_32_bits(phys_align);
 137         *pphys_addr_lo = lower_32_bits(phys_align);
 138         return 0;
 139 }
 140 /**
 141   * pm8001_find_ha_by_dev - from domain device which come from sas layer to
 142   * find out our hba struct.
 143   * @dev: the domain device which from sas layer.
 144   */
 145 static
 146 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev)
 147 {
 148         struct sas_ha_struct *sha = dev->port->ha;
 149         struct pm8001_hba_info *pm8001_ha = sha->lldd_ha;
 150         return pm8001_ha;
 151 }
 152
 153 /**
 154   * pm8001_phy_control - this function should be registered to
 155   * sas_domain_function_template to provide libsas used, note: this is just
 156   * control the HBA phy rather than other expander phy if you want control
 157   * other phy, you should use SMP command.
 158   * @sas_phy: which phy in HBA phys.
 159   * @func: the operation.
 160   * @funcdata: always NULL.
 161   */
 162 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func,
 163         void *funcdata)
 164 {
 165         int rc = 0, phy_id = sas_phy->id;
 166         struct pm8001_hba_info *pm8001_ha = NULL;
 167         struct sas_phy_linkrates *rates;
 168         DECLARE_COMPLETION_ONSTACK(completion);
 169         pm8001_ha = sas_phy->ha->lldd_ha;
 170         pm8001_ha->phy[phy_id].enable_completion = &completion;
 171         switch (func) {
 172         case PHY_FUNC_SET_LINK_RATE:
 173                 rates = funcdata;
 174                 if (rates->minimum_linkrate) {
 175                         pm8001_ha->phy[phy_id].minimum_linkrate =
 176                                 rates->minimum_linkrate;
 177                 }
 178                 if (rates->maximum_linkrate) {
 179                         pm8001_ha->phy[phy_id].maximum_linkrate =
 180                                 rates->maximum_linkrate;
 181                 }
 182                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 183                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 184                         wait_for_completion(&completion);
 185                 }
 186                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 187                                               PHY_LINK_RESET);
 188                 break;
 189         case PHY_FUNC_HARD_RESET:
 190                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 191                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 192                         wait_for_completion(&completion);
 193                 }
 194                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 195                                               PHY_HARD_RESET);
 196                 break;
 197         case PHY_FUNC_LINK_RESET:
 198                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 199                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 200                         wait_for_completion(&completion);
 201                 }
 202                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 203                                               PHY_LINK_RESET);
 204                 break;
 205         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 206                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 207                                               PHY_LINK_RESET);
 208                 break;
 209         case PHY_FUNC_DISABLE:
 210                 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
 211                 break;
 212         default:
 213                 rc = -EOPNOTSUPP;
 214         }
 215         msleep(300);
 216         return rc;
 217 }
 218
 219 int pm8001_slave_alloc(struct scsi_device *scsi_dev)
 220 {
 221         struct domain_device *dev = sdev_to_domain_dev(scsi_dev);
 222         if (dev_is_sata(dev)) {
 223                 /* We don't need to rescan targets
 224                 * if REPORT_LUNS request is failed
 225                 */
 226                 if (scsi_dev->lun > 0)
 227                         return -ENXIO;
 228                 scsi_dev->tagged_supported = 1;
 229         }
 230         return sas_slave_alloc(scsi_dev);
 231 }
 232
 233 /**
 234   * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
 235   * command to HBA.
 236   * @shost: the scsi host data.
 237   */
 238 void pm8001_scan_start(struct Scsi_Host *shost)
 239 {
 240         int i;
 241         struct pm8001_hba_info *pm8001_ha;
 242         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 243         pm8001_ha = sha->lldd_ha;
 244         PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
 245         for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
 246                 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
 247 }
 248
 249 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
 250 {
 251         /* give the phy enabling interrupt event time to come in (1s
 252         * is empirically about all it takes) */
 253         if (time < HZ)
 254                 return 0;
 255         /* Wait for discovery to finish */
 256         scsi_flush_work(shost);
 257         return 1;
 258 }
 259
 260 /**
 261   * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
 262   * @pm8001_ha: our hba card information
 263   * @ccb: the ccb which attached to smp task
 264   */
 265 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
 266         struct pm8001_ccb_info *ccb)
 267 {
 268         return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
 269 }
 270
 271 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
 272 {
 273         struct ata_queued_cmd *qc = task->uldd_task;
 274         if (qc) {
 275                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 276                         qc->tf.command == ATA_CMD_FPDMA_READ) {
 277                         *tag = qc->tag;
 278                         return 1;
 279                 }
 280         }
 281         return 0;
 282 }
 283
 284 /**
 285   * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
 286   * @pm8001_ha: our hba card information
 287   * @ccb: the ccb which attached to sata task
 288   */
 289 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
 290         struct pm8001_ccb_info *ccb)
 291 {
 292         return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
 293 }
 294
 295 /**
 296   * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
 297   * @pm8001_ha: our hba card information
 298   * @ccb: the ccb which attached to TM
 299   * @tmf: the task management IU
 300   */
 301 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
 302         struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
 303 {
 304         return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
 305 }
 306
 307 /**
 308   * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
 309   * @pm8001_ha: our hba card information
 310   * @ccb: the ccb which attached to ssp task
 311   */
 312 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
 313         struct pm8001_ccb_info *ccb)
 314 {
 315         return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
 316 }
 317 int pm8001_slave_configure(struct scsi_device *sdev)
 318 {
 319         struct domain_device *dev = sdev_to_domain_dev(sdev);
 320         int ret = sas_slave_configure(sdev);
 321         if (ret)
 322                 return ret;
 323         if (dev_is_sata(dev)) {
 324         #ifdef PM8001_DISABLE_NCQ
 325                 struct ata_port *ap = dev->sata_dev.ap;
 326                 struct ata_device *adev = ap->link.device;
 327                 adev->flags |= ATA_DFLAG_NCQ_OFF;
 328                 scsi_adjust_queue_depth(sdev, MSG_SIMPLE_TAG, 1);
 329         #endif
 330         }
 331         return 0;
 332 }
 333  /* Find the local port id that's attached to this device */
 334 static int sas_find_local_port_id(struct domain_device *dev)
 335 {
 336         struct domain_device *pdev = dev->parent;
 337
 338         /* Directly attached device */
 339         if (!pdev)
 340                 return dev->port->id;
 341         while (pdev) {
 342                 struct domain_device *pdev_p = pdev->parent;
 343                 if (!pdev_p)
 344                         return pdev->port->id;
 345                 pdev = pdev->parent;
 346         }
 347         return 0;
 348 }
 349
 350 /**
 351   * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
 352   * @task: the task to be execute.
 353   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 354   * we always execute one one time.
 355   * @gfp_flags: gfp_flags.
 356   * @is_tmf: if it is task management task.
 357   * @tmf: the task management IU
 358   */
 359 #define DEV_IS_GONE(pm8001_dev) \
 360         ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
 361 static int pm8001_task_exec(struct sas_task *task, const int num,
 362         gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
 363 {
 364         struct domain_device *dev = task->dev;
 365         struct pm8001_hba_info *pm8001_ha;
 366         struct pm8001_device *pm8001_dev;
 367         struct pm8001_port *port = NULL;
 368         struct sas_task *t = task;
 369         struct pm8001_ccb_info *ccb;
 370         u32 tag = 0xdeadbeef, rc, n_elem = 0;
 371         u32 n = num;
 372         unsigned long flags = 0, flags_libsas = 0;
 373
 374         if (!dev->port) {
 375                 struct task_status_struct *tsm = &t->task_status;
 376                 tsm->resp = SAS_TASK_UNDELIVERED;
 377                 tsm->stat = SAS_PHY_DOWN;
 378                 if (dev->dev_type != SATA_DEV)
 379                         t->task_done(t);
 380                 return 0;
 381         }
 382         pm8001_ha = pm8001_find_ha_by_dev(task->dev);
 383         PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
 384         spin_lock_irqsave(&pm8001_ha->lock, flags);
 385         do {
 386                 dev = t->dev;
 387                 pm8001_dev = dev->lldd_dev;
 388                 if (DEV_IS_GONE(pm8001_dev)) {
 389                         if (pm8001_dev) {
 390                                 PM8001_IO_DBG(pm8001_ha,
 391                                         pm8001_printk("device %d not ready.\n",
 392                                         pm8001_dev->device_id));
 393                         } else {
 394                                 PM8001_IO_DBG(pm8001_ha,
 395                                         pm8001_printk("device %016llx not "
 396                                         "ready.\n", SAS_ADDR(dev->sas_addr)));
 397                         }
 398                         rc = SAS_PHY_DOWN;
 399                         goto out_done;
 400                 }
 401                 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
 402                 if (!port->port_attached) {
 403                         if (sas_protocol_ata(t->task_proto)) {
 404                                 struct task_status_struct *ts = &t->task_status;
 405                                 ts->resp = SAS_TASK_UNDELIVERED;
 406                                 ts->stat = SAS_PHY_DOWN;
 407
 408                                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 409                                 spin_unlock_irqrestore(dev->sata_dev.ap->lock,
 410                                                 flags_libsas);
 411                                 t->task_done(t);
 412                                 spin_lock_irqsave(dev->sata_dev.ap->lock,
 413                                         flags_libsas);
 414                                 spin_lock_irqsave(&pm8001_ha->lock, flags);
 415                                 if (n > 1)
 416                                         t = list_entry(t->list.next,
 417                                                         struct sas_task, list);
 418                                 continue;
 419                         } else {
 420                                 struct task_status_struct *ts = &t->task_status;
 421                                 ts->resp = SAS_TASK_UNDELIVERED;
 422                                 ts->stat = SAS_PHY_DOWN;
 423                                 t->task_done(t);
 424                                 if (n > 1)
 425                                         t = list_entry(t->list.next,
 426                                                         struct sas_task, list);
 427                                 continue;
 428                         }
 429                 }
 430                 rc = pm8001_tag_alloc(pm8001_ha, &tag);
 431                 if (rc)
 432                         goto err_out;
 433                 ccb = &pm8001_ha->ccb_info[tag];
 434
 435                 if (!sas_protocol_ata(t->task_proto)) {
 436                         if (t->num_scatter) {
 437                                 n_elem = dma_map_sg(pm8001_ha->dev,
 438                                         t->scatter,
 439                                         t->num_scatter,
 440                                         t->data_dir);
 441                                 if (!n_elem) {
 442                                         rc = -ENOMEM;
 443                                         goto err_out_tag;
 444                                 }
 445                         }
 446                 } else {
 447                         n_elem = t->num_scatter;
 448                 }
 449
 450                 t->lldd_task = ccb;
 451                 ccb->n_elem = n_elem;
 452                 ccb->ccb_tag = tag;
 453                 ccb->task = t;
 454                 switch (t->task_proto) {
 455                 case SAS_PROTOCOL_SMP:
 456                         rc = pm8001_task_prep_smp(pm8001_ha, ccb);
 457                         break;
 458                 case SAS_PROTOCOL_SSP:
 459                         if (is_tmf)
 460                                 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
 461                                         ccb, tmf);
 462                         else
 463                                 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
 464                         break;
 465                 case SAS_PROTOCOL_SATA:
 466                 case SAS_PROTOCOL_STP:
 467                 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 468                         rc = pm8001_task_prep_ata(pm8001_ha, ccb);
 469                         break;
 470                 default:
 471                         dev_printk(KERN_ERR, pm8001_ha->dev,
 472                                 "unknown sas_task proto: 0x%x\n",
 473                                 t->task_proto);
 474                         rc = -EINVAL;
 475                         break;
 476                 }
 477
 478                 if (rc) {
 479                         PM8001_IO_DBG(pm8001_ha,
 480                                 pm8001_printk("rc is %x\n", rc));
 481                         goto err_out_tag;
 482                 }
 483                 /* TODO: select normal or high priority */
 484                 spin_lock(&t->task_state_lock);
 485                 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
 486                 spin_unlock(&t->task_state_lock);
 487                 pm8001_dev->running_req++;
 488                 if (n > 1)
 489                         t = list_entry(t->list.next, struct sas_task, list);
 490         } while (--n);
 491         rc = 0;
 492         goto out_done;
 493
 494 err_out_tag:
 495         pm8001_tag_free(pm8001_ha, tag);
 496 err_out:
 497         dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
 498         if (!sas_protocol_ata(t->task_proto))
 499                 if (n_elem)
 500                         dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
 501                                 t->data_dir);
 502 out_done:
 503         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 504         return rc;
 505 }
 506
 507 /**
 508   * pm8001_queue_command - register for upper layer used, all IO commands sent
 509   * to HBA are from this interface.
 510   * @task: the task to be execute.
 511   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 512   * we always execute one one time
 513   * @gfp_flags: gfp_flags
 514   */
 515 int pm8001_queue_command(struct sas_task *task, const int num,
 516                 gfp_t gfp_flags)
 517 {
 518         return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
 519 }
 520
 521 void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
 522 {
 523         pm8001_tag_clear(pm8001_ha, ccb_idx);
 524 }
 525
 526 /**
 527   * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
 528   * @pm8001_ha: our hba card information
 529   * @ccb: the ccb which attached to ssp task
 530   * @task: the task to be free.
 531   * @ccb_idx: ccb index.
 532   */
 533 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 534         struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
 535 {
 536         if (!ccb->task)
 537                 return;
 538         if (!sas_protocol_ata(task->task_proto))
 539                 if (ccb->n_elem)
 540                         dma_unmap_sg(pm8001_ha->dev, task->scatter,
 541                                 task->num_scatter, task->data_dir);
 542
 543         switch (task->task_proto) {
 544         case SAS_PROTOCOL_SMP:
 545                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
 546                         PCI_DMA_FROMDEVICE);
 547                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
 548                         PCI_DMA_TODEVICE);
 549                 break;
 550
 551         case SAS_PROTOCOL_SATA:
 552         case SAS_PROTOCOL_STP:
 553         case SAS_PROTOCOL_SSP:
 554         default:
 555                 /* do nothing */
 556                 break;
 557         }
 558         task->lldd_task = NULL;
 559         ccb->task = NULL;
 560         ccb->ccb_tag = 0xFFFFFFFF;
 561         pm8001_ccb_free(pm8001_ha, ccb_idx);
 562 }
 563
 564  /**
 565   * pm8001_alloc_dev - find a empty pm8001_device
 566   * @pm8001_ha: our hba card information
 567   */
 568 struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 569 {
 570         u32 dev;
 571         for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
 572                 if (pm8001_ha->devices[dev].dev_type == NO_DEVICE) {
 573                         pm8001_ha->devices[dev].id = dev;
 574                         return &pm8001_ha->devices[dev];
 575                 }
 576         }
 577         if (dev == PM8001_MAX_DEVICES) {
 578                 PM8001_FAIL_DBG(pm8001_ha,
 579                         pm8001_printk("max support %d devices, ignore ..\n",
 580                         PM8001_MAX_DEVICES));
 581         }
 582         return NULL;
 583 }
 584
 585 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
 586 {
 587         u32 id = pm8001_dev->id;
 588         memset(pm8001_dev, 0, sizeof(*pm8001_dev));
 589         pm8001_dev->id = id;
 590         pm8001_dev->dev_type = NO_DEVICE;
 591         pm8001_dev->device_id = PM8001_MAX_DEVICES;
 592         pm8001_dev->sas_device = NULL;
 593 }
 594
 595 /**
 596   * pm8001_dev_found_notify - libsas notify a device is found.
 597   * @dev: the device structure which sas layer used.
 598   *
 599   * when libsas find a sas domain device, it should tell the LLDD that
 600   * device is found, and then LLDD register this device to HBA firmware
 601   * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
 602   * device ID(according to device's sas address) and returned it to LLDD. From
 603   * now on, we communicate with HBA FW with the device ID which HBA assigned
 604   * rather than sas address. it is the necessary step for our HBA but it is
 605   * the optional for other HBA driver.
 606   */
 607 static int pm8001_dev_found_notify(struct domain_device *dev)
 608 {
 609         unsigned long flags = 0;
 610         int res = 0;
 611         struct pm8001_hba_info *pm8001_ha = NULL;
 612         struct domain_device *parent_dev = dev->parent;
 613         struct pm8001_device *pm8001_device;
 614         DECLARE_COMPLETION_ONSTACK(completion);
 615         u32 flag = 0;
 616         pm8001_ha = pm8001_find_ha_by_dev(dev);
 617         spin_lock_irqsave(&pm8001_ha->lock, flags);
 618
 619         pm8001_device = pm8001_alloc_dev(pm8001_ha);
 620         if (!pm8001_device) {
 621                 res = -1;
 622                 goto found_out;
 623         }
 624         pm8001_device->sas_device = dev;
 625         dev->lldd_dev = pm8001_device;
 626         pm8001_device->dev_type = dev->dev_type;
 627         pm8001_device->dcompletion = &completion;
 628         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
 629                 int phy_id;
 630                 struct ex_phy *phy;
 631                 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
 632                 phy_id++) {
 633                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
 634                         if (SAS_ADDR(phy->attached_sas_addr)
 635                                 == SAS_ADDR(dev->sas_addr)) {
 636                                 pm8001_device->attached_phy = phy_id;
 637                                 break;
 638                         }
 639                 }
 640                 if (phy_id == parent_dev->ex_dev.num_phys) {
 641                         PM8001_FAIL_DBG(pm8001_ha,
 642                         pm8001_printk("Error: no attached dev:%016llx"
 643                         " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
 644                                 SAS_ADDR(parent_dev->sas_addr)));
 645                         res = -1;
 646                 }
 647         } else {
 648                 if (dev->dev_type == SATA_DEV) {
 649                         pm8001_device->attached_phy =
 650                                 dev->rphy->identify.phy_identifier;
 651                                 flag = 1; /* directly sata*/
 652                 }
 653         } /*register this device to HBA*/
 654         PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device \n"));
 655         PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
 656         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 657         wait_for_completion(&completion);
 658         if (dev->dev_type == SAS_END_DEV)
 659                 msleep(50);
 660         pm8001_ha->flags |= PM8001F_RUN_TIME ;
 661         return 0;
 662 found_out:
 663         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 664         return res;
 665 }
 666
 667 int pm8001_dev_found(struct domain_device *dev)
 668 {
 669         return pm8001_dev_found_notify(dev);
 670 }
 671
 672 /**
 673   * pm8001_alloc_task - allocate a task structure for TMF
 674   */
 675 static struct sas_task *pm8001_alloc_task(void)
 676 {
 677         struct sas_task *task = kzalloc(sizeof(*task), GFP_KERNEL);
 678         if (task) {
 679                 INIT_LIST_HEAD(&task->list);
 680                 spin_lock_init(&task->task_state_lock);
 681                 task->task_state_flags = SAS_TASK_STATE_PENDING;
 682                 init_timer(&task->timer);
 683                 init_completion(&task->completion);
 684         }
 685         return task;
 686 }
 687
 688 static void pm8001_free_task(struct sas_task *task)
 689 {
 690         if (task) {
 691                 BUG_ON(!list_empty(&task->list));
 692                 kfree(task);
 693         }
 694 }
 695
 696 static void pm8001_task_done(struct sas_task *task)
 697 {
 698         if (!del_timer(&task->timer))
 699                 return;
 700         complete(&task->completion);
 701 }
 702
 703 static void pm8001_tmf_timedout(unsigned long data)
 704 {
 705         struct sas_task *task = (struct sas_task *)data;
 706
 707         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 708         complete(&task->completion);
 709 }
 710
 711 #define PM8001_TASK_TIMEOUT 20
 712 /**
 713   * pm8001_exec_internal_tmf_task - execute some task management commands.
 714   * @dev: the wanted device.
 715   * @tmf: which task management wanted to be take.
 716   * @para_len: para_len.
 717   * @parameter: ssp task parameter.
 718   *
 719   * when errors or exception happened, we may want to do something, for example
 720   * abort the issued task which result in this execption, it is done by calling
 721   * this function, note it is also with the task execute interface.
 722   */
 723 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
 724         void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
 725 {
 726         int res, retry;
 727         struct sas_task *task = NULL;
 728         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 729
 730         for (retry = 0; retry < 3; retry++) {
 731                 task = pm8001_alloc_task();
 732                 if (!task)
 733                         return -ENOMEM;
 734
 735                 task->dev = dev;
 736                 task->task_proto = dev->tproto;
 737                 memcpy(&task->ssp_task, parameter, para_len);
 738                 task->task_done = pm8001_task_done;
 739                 task->timer.data = (unsigned long)task;
 740                 task->timer.function = pm8001_tmf_timedout;
 741                 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
 742                 add_timer(&task->timer);
 743
 744                 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
 745
 746                 if (res) {
 747                         del_timer(&task->timer);
 748                         PM8001_FAIL_DBG(pm8001_ha,
 749                                 pm8001_printk("Executing internal task "
 750                                 "failed\n"));
 751                         goto ex_err;
 752                 }
 753                 wait_for_completion(&task->completion);
 754                 res = -TMF_RESP_FUNC_FAILED;
 755                 /* Even TMF timed out, return direct. */
 756                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 757                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 758                                 PM8001_FAIL_DBG(pm8001_ha,
 759                                         pm8001_printk("TMF task[%x]timeout.\n",
 760                                         tmf->tmf));
 761                                 goto ex_err;
 762                         }
 763                 }
 764
 765                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 766                         task->task_status.stat == SAM_GOOD) {
 767                         res = TMF_RESP_FUNC_COMPLETE;
 768                         break;
 769                 }
 770
 771                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 772                 task->task_status.stat == SAS_DATA_UNDERRUN) {
 773                         /* no error, but return the number of bytes of
 774                         * underrun */
 775                         res = task->task_status.residual;
 776                         break;
 777                 }
 778
 779                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 780                         task->task_status.stat == SAS_DATA_OVERRUN) {
 781                         PM8001_FAIL_DBG(pm8001_ha,
 782                                 pm8001_printk("Blocked task error.\n"));
 783                         res = -EMSGSIZE;
 784                         break;
 785                 } else {
 786                         PM8001_EH_DBG(pm8001_ha,
 787                                 pm8001_printk(" Task to dev %016llx response:"
 788                                 "0x%x status 0x%x\n",
 789                                 SAS_ADDR(dev->sas_addr),
 790                                 task->task_status.resp,
 791                                 task->task_status.stat));
 792                         pm8001_free_task(task);
 793                         task = NULL;
 794                 }
 795         }
 796 ex_err:
 797         BUG_ON(retry == 3 && task != NULL);
 798         if (task != NULL)
 799                 pm8001_free_task(task);
 800         return res;
 801 }
 802
 803 static int
 804 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
 805         struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
 806         u32 task_tag)
 807 {
 808         int res, retry;
 809         u32 ccb_tag;
 810         struct pm8001_ccb_info *ccb;
 811         struct sas_task *task = NULL;
 812
 813         for (retry = 0; retry < 3; retry++) {
 814                 task = pm8001_alloc_task();
 815                 if (!task)
 816                         return -ENOMEM;
 817
 818                 task->dev = dev;
 819                 task->task_proto = dev->tproto;
 820                 task->task_done = pm8001_task_done;
 821                 task->timer.data = (unsigned long)task;
 822                 task->timer.function = pm8001_tmf_timedout;
 823                 task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
 824                 add_timer(&task->timer);
 825
 826                 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
 827                 if (res)
 828                         return res;
 829                 ccb = &pm8001_ha->ccb_info[ccb_tag];
 830                 ccb->device = pm8001_dev;
 831                 ccb->ccb_tag = ccb_tag;
 832                 ccb->task = task;
 833
 834                 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
 835                         pm8001_dev, flag, task_tag, ccb_tag);
 836
 837                 if (res) {
 838                         del_timer(&task->timer);
 839                         PM8001_FAIL_DBG(pm8001_ha,
 840                                 pm8001_printk("Executing internal task "
 841                                 "failed\n"));
 842                         goto ex_err;
 843                 }
 844                 wait_for_completion(&task->completion);
 845                 res = TMF_RESP_FUNC_FAILED;
 846                 /* Even TMF timed out, return direct. */
 847                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 848                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 849                                 PM8001_FAIL_DBG(pm8001_ha,
 850                                         pm8001_printk("TMF task timeout.\n"));
 851                                 goto ex_err;
 852                         }
 853                 }
 854
 855                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 856                         task->task_status.stat == SAM_GOOD) {
 857                         res = TMF_RESP_FUNC_COMPLETE;
 858                         break;
 859
 860                 } else {
 861                         PM8001_EH_DBG(pm8001_ha,
 862                                 pm8001_printk(" Task to dev %016llx response: "
 863                                         "0x%x status 0x%x\n",
 864                                 SAS_ADDR(dev->sas_addr),
 865                                 task->task_status.resp,
 866                                 task->task_status.stat));
 867                         pm8001_free_task(task);
 868                         task = NULL;
 869                 }
 870         }
 871 ex_err:
 872         BUG_ON(retry == 3 && task != NULL);
 873         if (task != NULL)
 874                 pm8001_free_task(task);
 875         return res;
 876 }
 877
 878 /**
 879   * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
 880   * @dev: the device structure which sas layer used.
 881   */
 882 static void pm8001_dev_gone_notify(struct domain_device *dev)
 883 {
 884         unsigned long flags = 0;
 885         u32 tag;
 886         struct pm8001_hba_info *pm8001_ha;
 887         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 888
 889         pm8001_ha = pm8001_find_ha_by_dev(dev);
 890         spin_lock_irqsave(&pm8001_ha->lock, flags);
 891         pm8001_tag_alloc(pm8001_ha, &tag);
 892         if (pm8001_dev) {
 893                 u32 device_id = pm8001_dev->device_id;
 894
 895                 PM8001_DISC_DBG(pm8001_ha,
 896                         pm8001_printk("found dev[%d:%x] is gone.\n",
 897                         pm8001_dev->device_id, pm8001_dev->dev_type));
 898                 if (pm8001_dev->running_req) {
 899                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 900                         pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 901                                 dev, 1, 0);
 902                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 903                 }
 904                 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
 905                 pm8001_free_dev(pm8001_dev);
 906         } else {
 907                 PM8001_DISC_DBG(pm8001_ha,
 908                         pm8001_printk("Found dev has gone.\n"));
 909         }
 910         dev->lldd_dev = NULL;
 911         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 912 }
 913
 914 void pm8001_dev_gone(struct domain_device *dev)
 915 {
 916         pm8001_dev_gone_notify(dev);
 917 }
 918
 919 static int pm8001_issue_ssp_tmf(struct domain_device *dev,
 920         u8 *lun, struct pm8001_tmf_task *tmf)
 921 {
 922         struct sas_ssp_task ssp_task;
 923         if (!(dev->tproto & SAS_PROTOCOL_SSP))
 924                 return TMF_RESP_FUNC_ESUPP;
 925
 926         strncpy((u8 *)&ssp_task.LUN, lun, 8);
 927         return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
 928                 tmf);
 929 }
 930
 931 /**
 932   * Standard mandates link reset for ATA  (type 0) and hard reset for
 933   * SSP (type 1) , only for RECOVERY
 934   */
 935 int pm8001_I_T_nexus_reset(struct domain_device *dev)
 936 {
 937         int rc = TMF_RESP_FUNC_FAILED;
 938         struct pm8001_device *pm8001_dev;
 939         struct pm8001_hba_info *pm8001_ha;
 940         struct sas_phy *phy;
 941         if (!dev || !dev->lldd_dev)
 942                 return -1;
 943
 944         pm8001_dev = dev->lldd_dev;
 945         pm8001_ha = pm8001_find_ha_by_dev(dev);
 946         phy = sas_find_local_phy(dev);
 947
 948         if (dev_is_sata(dev)) {
 949                 DECLARE_COMPLETION_ONSTACK(completion_setstate);
 950                 if (scsi_is_sas_phy_local(phy))
 951                         return 0;
 952                 rc = sas_phy_reset(phy, 1);
 953                 msleep(2000);
 954                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 955                         dev, 1, 0);
 956                 pm8001_dev->setds_completion = &completion_setstate;
 957                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 958                         pm8001_dev, 0x01);
 959                 wait_for_completion(&completion_setstate);
 960         } else{
 961         rc = sas_phy_reset(phy, 1);
 962         msleep(2000);
 963         }
 964         PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
 965                 pm8001_dev->device_id, rc));
 966         return rc;
 967 }
 968
 969 /* mandatory SAM-3, the task reset the specified LUN*/
 970 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
 971 {
 972         int rc = TMF_RESP_FUNC_FAILED;
 973         struct pm8001_tmf_task tmf_task;
 974         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 975         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 976         if (dev_is_sata(dev)) {
 977                 struct sas_phy *phy = sas_find_local_phy(dev);
 978                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 979                         dev, 1, 0);
 980                 rc = sas_phy_reset(phy, 1);
 981                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 982                         pm8001_dev, 0x01);
 983                 msleep(2000);
 984         } else {
 985                 tmf_task.tmf = TMF_LU_RESET;
 986                 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
 987         }
 988         /* If failed, fall-through I_T_Nexus reset */
 989         PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
 990                 pm8001_dev->device_id, rc));
 991         return rc;
 992 }
 993
 994 /* optional SAM-3 */
 995 int pm8001_query_task(struct sas_task *task)
 996 {
 997         u32 tag = 0xdeadbeef;
 998         int i = 0;
 999         struct scsi_lun lun;
1000         struct pm8001_tmf_task tmf_task;
1001         int rc = TMF_RESP_FUNC_FAILED;
1002         if (unlikely(!task || !task->lldd_task || !task->dev))
1003                 return rc;
1004
1005         if (task->task_proto & SAS_PROTOCOL_SSP) {
1006                 struct scsi_cmnd *cmnd = task->uldd_task;
1007                 struct domain_device *dev = task->dev;
1008                 struct pm8001_hba_info *pm8001_ha =
1009                         pm8001_find_ha_by_dev(dev);
1010
1011                 int_to_scsilun(cmnd->device->lun, &lun);
1012                 rc = pm8001_find_tag(task, &tag);
1013                 if (rc == 0) {
1014                         rc = TMF_RESP_FUNC_FAILED;
1015                         return rc;
1016                 }
1017                 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1018                 for (i = 0; i < 16; i++)
1019                         printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1020                 printk(KERN_INFO "]\n");
1021                 tmf_task.tmf =  TMF_QUERY_TASK;
1022                 tmf_task.tag_of_task_to_be_managed = tag;
1023
1024                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1025                 switch (rc) {
1026                 /* The task is still in Lun, release it then */
1027                 case TMF_RESP_FUNC_SUCC:
1028                         PM8001_EH_DBG(pm8001_ha,
1029                                 pm8001_printk("The task is still in Lun \n"));
1030                 /* The task is not in Lun or failed, reset the phy */
1031                 case TMF_RESP_FUNC_FAILED:
1032                 case TMF_RESP_FUNC_COMPLETE:
1033                         PM8001_EH_DBG(pm8001_ha,
1034                         pm8001_printk("The task is not in Lun or failed,"
1035                         " reset the phy \n"));
1036                         break;
1037                 }
1038         }
1039         pm8001_printk(":rc= %d\n", rc);
1040         return rc;
1041 }
1042
1043 /*  mandatory SAM-3, still need free task/ccb info, abord the specified task */
1044 int pm8001_abort_task(struct sas_task *task)
1045 {
1046         unsigned long flags;
1047         u32 tag = 0xdeadbeef;
1048         u32 device_id;
1049         struct domain_device *dev ;
1050         struct pm8001_hba_info *pm8001_ha = NULL;
1051         struct pm8001_ccb_info *ccb;
1052         struct scsi_lun lun;
1053         struct pm8001_device *pm8001_dev;
1054         struct pm8001_tmf_task tmf_task;
1055         int rc = TMF_RESP_FUNC_FAILED;
1056         if (unlikely(!task || !task->lldd_task || !task->dev))
1057                 return rc;
1058         spin_lock_irqsave(&task->task_state_lock, flags);
1059         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1060                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1061                 rc = TMF_RESP_FUNC_COMPLETE;
1062                 goto out;
1063         }
1064         spin_unlock_irqrestore(&task->task_state_lock, flags);
1065         if (task->task_proto & SAS_PROTOCOL_SSP) {
1066                 struct scsi_cmnd *cmnd = task->uldd_task;
1067                 dev = task->dev;
1068                 ccb = task->lldd_task;
1069                 pm8001_dev = dev->lldd_dev;
1070                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1071                 int_to_scsilun(cmnd->device->lun, &lun);
1072                 rc = pm8001_find_tag(task, &tag);
1073                 if (rc == 0) {
1074                         printk(KERN_INFO "No such tag in %s\n", __func__);
1075                         rc = TMF_RESP_FUNC_FAILED;
1076                         return rc;
1077                 }
1078                 device_id = pm8001_dev->device_id;
1079                 PM8001_EH_DBG(pm8001_ha,
1080                         pm8001_printk("abort io to deviceid= %d\n", device_id));
1081                 tmf_task.tmf = TMF_ABORT_TASK;
1082                 tmf_task.tag_of_task_to_be_managed = tag;
1083                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1084                 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1085                         pm8001_dev->sas_device, 0, tag);
1086         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1087                 task->task_proto & SAS_PROTOCOL_STP) {
1088                 dev = task->dev;
1089                 pm8001_dev = dev->lldd_dev;
1090                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1091                 rc = pm8001_find_tag(task, &tag);
1092                 if (rc == 0) {
1093                         printk(KERN_INFO "No such tag in %s\n", __func__);
1094                         rc = TMF_RESP_FUNC_FAILED;
1095                         return rc;
1096                 }
1097                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1098                         pm8001_dev->sas_device, 0, tag);
1099         } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1100                 /* SMP */
1101                 dev = task->dev;
1102                 pm8001_dev = dev->lldd_dev;
1103                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1104                 rc = pm8001_find_tag(task, &tag);
1105                 if (rc == 0) {
1106                         printk(KERN_INFO "No such tag in %s\n", __func__);
1107                         rc = TMF_RESP_FUNC_FAILED;
1108                         return rc;
1109                 }
1110                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1111                         pm8001_dev->sas_device, 0, tag);
1112
1113         }
1114 out:
1115         if (rc != TMF_RESP_FUNC_COMPLETE)
1116                 pm8001_printk("rc= %d\n", rc);
1117         return rc;
1118 }
1119
1120 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1121 {
1122         int rc = TMF_RESP_FUNC_FAILED;
1123         struct pm8001_tmf_task tmf_task;
1124
1125         tmf_task.tmf = TMF_ABORT_TASK_SET;
1126         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1127         return rc;
1128 }
1129
1130 int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1131 {
1132         int rc = TMF_RESP_FUNC_FAILED;
1133         struct pm8001_tmf_task tmf_task;
1134
1135         tmf_task.tmf = TMF_CLEAR_ACA;
1136         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1137
1138         return rc;
1139 }
1140
1141 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1142 {
1143         int rc = TMF_RESP_FUNC_FAILED;
1144         struct pm8001_tmf_task tmf_task;
1145         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1146         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1147
1148         PM8001_EH_DBG(pm8001_ha,
1149                 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1150                 pm8001_dev->device_id));
1151         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1152         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1153         return rc;
1154 }
1155