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         unsigned long flags;
 170         pm8001_ha = sas_phy->ha->lldd_ha;
 171         pm8001_ha->phy[phy_id].enable_completion = &completion;
 172         switch (func) {
 173         case PHY_FUNC_SET_LINK_RATE:
 174                 rates = funcdata;
 175                 if (rates->minimum_linkrate) {
 176                         pm8001_ha->phy[phy_id].minimum_linkrate =
 177                                 rates->minimum_linkrate;
 178                 }
 179                 if (rates->maximum_linkrate) {
 180                         pm8001_ha->phy[phy_id].maximum_linkrate =
 181                                 rates->maximum_linkrate;
 182                 }
 183                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 184                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 185                         wait_for_completion(&completion);
 186                 }
 187                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 188                                               PHY_LINK_RESET);
 189                 break;
 190         case PHY_FUNC_HARD_RESET:
 191                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 192                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 193                         wait_for_completion(&completion);
 194                 }
 195                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 196                                               PHY_HARD_RESET);
 197                 break;
 198         case PHY_FUNC_LINK_RESET:
 199                 if (pm8001_ha->phy[phy_id].phy_state == 0) {
 200                         PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id);
 201                         wait_for_completion(&completion);
 202                 }
 203                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 204                                               PHY_LINK_RESET);
 205                 break;
 206         case PHY_FUNC_RELEASE_SPINUP_HOLD:
 207                 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id,
 208                                               PHY_LINK_RESET);
 209                 break;
 210         case PHY_FUNC_DISABLE:
 211                 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id);
 212                 break;
 213         case PHY_FUNC_GET_EVENTS:
 214                 spin_lock_irqsave(&pm8001_ha->lock, flags);
 215                 if (-1 == pm8001_bar4_shift(pm8001_ha,
 216                                         (phy_id < 4) ? 0x30000 : 0x40000)) {
 217                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 218                         return -EINVAL;
 219                 }
 220                 {
 221                         struct sas_phy *phy = sas_phy->phy;
 222                         uint32_t *qp = (uint32_t *)(((char *)
 223                                 pm8001_ha->io_mem[2].memvirtaddr)
 224                                 + 0x1034 + (0x4000 * (phy_id & 3)));
 225
 226                         phy->invalid_dword_count = qp[0];
 227                         phy->running_disparity_error_count = qp[1];
 228                         phy->loss_of_dword_sync_count = qp[3];
 229                         phy->phy_reset_problem_count = qp[4];
 230                 }
 231                 pm8001_bar4_shift(pm8001_ha, 0);
 232                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 233                 return 0;
 234         default:
 235                 rc = -EOPNOTSUPP;
 236         }
 237         msleep(300);
 238         return rc;
 239 }
 240
 241 /**
 242   * pm8001_scan_start - we should enable all HBA phys by sending the phy_start
 243   * command to HBA.
 244   * @shost: the scsi host data.
 245   */
 246 void pm8001_scan_start(struct Scsi_Host *shost)
 247 {
 248         int i;
 249         struct pm8001_hba_info *pm8001_ha;
 250         struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost);
 251         pm8001_ha = sha->lldd_ha;
 252         PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha);
 253         for (i = 0; i < pm8001_ha->chip->n_phy; ++i)
 254                 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i);
 255 }
 256
 257 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time)
 258 {
 259         struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost);
 260
 261         /* give the phy enabling interrupt event time to come in (1s
 262         * is empirically about all it takes) */
 263         if (time < HZ)
 264                 return 0;
 265         /* Wait for discovery to finish */
 266         sas_drain_work(ha);
 267         return 1;
 268 }
 269
 270 /**
 271   * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task
 272   * @pm8001_ha: our hba card information
 273   * @ccb: the ccb which attached to smp task
 274   */
 275 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha,
 276         struct pm8001_ccb_info *ccb)
 277 {
 278         return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb);
 279 }
 280
 281 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag)
 282 {
 283         struct ata_queued_cmd *qc = task->uldd_task;
 284         if (qc) {
 285                 if (qc->tf.command == ATA_CMD_FPDMA_WRITE ||
 286                         qc->tf.command == ATA_CMD_FPDMA_READ) {
 287                         *tag = qc->tag;
 288                         return 1;
 289                 }
 290         }
 291         return 0;
 292 }
 293
 294 /**
 295   * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task
 296   * @pm8001_ha: our hba card information
 297   * @ccb: the ccb which attached to sata task
 298   */
 299 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha,
 300         struct pm8001_ccb_info *ccb)
 301 {
 302         return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb);
 303 }
 304
 305 /**
 306   * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data
 307   * @pm8001_ha: our hba card information
 308   * @ccb: the ccb which attached to TM
 309   * @tmf: the task management IU
 310   */
 311 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha,
 312         struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf)
 313 {
 314         return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf);
 315 }
 316
 317 /**
 318   * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task
 319   * @pm8001_ha: our hba card information
 320   * @ccb: the ccb which attached to ssp task
 321   */
 322 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha,
 323         struct pm8001_ccb_info *ccb)
 324 {
 325         return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb);
 326 }
 327
 328  /* Find the local port id that's attached to this device */
 329 static int sas_find_local_port_id(struct domain_device *dev)
 330 {
 331         struct domain_device *pdev = dev->parent;
 332
 333         /* Directly attached device */
 334         if (!pdev)
 335                 return dev->port->id;
 336         while (pdev) {
 337                 struct domain_device *pdev_p = pdev->parent;
 338                 if (!pdev_p)
 339                         return pdev->port->id;
 340                 pdev = pdev->parent;
 341         }
 342         return 0;
 343 }
 344
 345 /**
 346   * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware.
 347   * @task: the task to be execute.
 348   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 349   * we always execute one one time.
 350   * @gfp_flags: gfp_flags.
 351   * @is_tmf: if it is task management task.
 352   * @tmf: the task management IU
 353   */
 354 #define DEV_IS_GONE(pm8001_dev) \
 355         ((!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE)))
 356 static int pm8001_task_exec(struct sas_task *task, const int num,
 357         gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf)
 358 {
 359         struct domain_device *dev = task->dev;
 360         struct pm8001_hba_info *pm8001_ha;
 361         struct pm8001_device *pm8001_dev;
 362         struct pm8001_port *port = NULL;
 363         struct sas_task *t = task;
 364         struct pm8001_ccb_info *ccb;
 365         u32 tag = 0xdeadbeef, rc, n_elem = 0;
 366         u32 n = num;
 367         unsigned long flags = 0;
 368
 369         if (!dev->port) {
 370                 struct task_status_struct *tsm = &t->task_status;
 371                 tsm->resp = SAS_TASK_UNDELIVERED;
 372                 tsm->stat = SAS_PHY_DOWN;
 373                 if (dev->dev_type != SATA_DEV)
 374                         t->task_done(t);
 375                 return 0;
 376         }
 377         pm8001_ha = pm8001_find_ha_by_dev(task->dev);
 378         PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n "));
 379         spin_lock_irqsave(&pm8001_ha->lock, flags);
 380         do {
 381                 dev = t->dev;
 382                 pm8001_dev = dev->lldd_dev;
 383                 port = &pm8001_ha->port[sas_find_local_port_id(dev)];
 384                 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) {
 385                         if (sas_protocol_ata(t->task_proto)) {
 386                                 struct task_status_struct *ts = &t->task_status;
 387                                 ts->resp = SAS_TASK_UNDELIVERED;
 388                                 ts->stat = SAS_PHY_DOWN;
 389
 390                                 spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 391                                 t->task_done(t);
 392                                 spin_lock_irqsave(&pm8001_ha->lock, flags);
 393                                 if (n > 1)
 394                                         t = list_entry(t->list.next,
 395                                                         struct sas_task, list);
 396                                 continue;
 397                         } else {
 398                                 struct task_status_struct *ts = &t->task_status;
 399                                 ts->resp = SAS_TASK_UNDELIVERED;
 400                                 ts->stat = SAS_PHY_DOWN;
 401                                 t->task_done(t);
 402                                 if (n > 1)
 403                                         t = list_entry(t->list.next,
 404                                                         struct sas_task, list);
 405                                 continue;
 406                         }
 407                 }
 408                 rc = pm8001_tag_alloc(pm8001_ha, &tag);
 409                 if (rc)
 410                         goto err_out;
 411                 ccb = &pm8001_ha->ccb_info[tag];
 412
 413                 if (!sas_protocol_ata(t->task_proto)) {
 414                         if (t->num_scatter) {
 415                                 n_elem = dma_map_sg(pm8001_ha->dev,
 416                                         t->scatter,
 417                                         t->num_scatter,
 418                                         t->data_dir);
 419                                 if (!n_elem) {
 420                                         rc = -ENOMEM;
 421                                         goto err_out_tag;
 422                                 }
 423                         }
 424                 } else {
 425                         n_elem = t->num_scatter;
 426                 }
 427
 428                 t->lldd_task = ccb;
 429                 ccb->n_elem = n_elem;
 430                 ccb->ccb_tag = tag;
 431                 ccb->task = t;
 432                 switch (t->task_proto) {
 433                 case SAS_PROTOCOL_SMP:
 434                         rc = pm8001_task_prep_smp(pm8001_ha, ccb);
 435                         break;
 436                 case SAS_PROTOCOL_SSP:
 437                         if (is_tmf)
 438                                 rc = pm8001_task_prep_ssp_tm(pm8001_ha,
 439                                         ccb, tmf);
 440                         else
 441                                 rc = pm8001_task_prep_ssp(pm8001_ha, ccb);
 442                         break;
 443                 case SAS_PROTOCOL_SATA:
 444                 case SAS_PROTOCOL_STP:
 445                 case SAS_PROTOCOL_SATA | SAS_PROTOCOL_STP:
 446                         rc = pm8001_task_prep_ata(pm8001_ha, ccb);
 447                         break;
 448                 default:
 449                         dev_printk(KERN_ERR, pm8001_ha->dev,
 450                                 "unknown sas_task proto: 0x%x\n",
 451                                 t->task_proto);
 452                         rc = -EINVAL;
 453                         break;
 454                 }
 455
 456                 if (rc) {
 457                         PM8001_IO_DBG(pm8001_ha,
 458                                 pm8001_printk("rc is %x\n", rc));
 459                         goto err_out_tag;
 460                 }
 461                 /* TODO: select normal or high priority */
 462                 spin_lock(&t->task_state_lock);
 463                 t->task_state_flags |= SAS_TASK_AT_INITIATOR;
 464                 spin_unlock(&t->task_state_lock);
 465                 pm8001_dev->running_req++;
 466                 if (n > 1)
 467                         t = list_entry(t->list.next, struct sas_task, list);
 468         } while (--n);
 469         rc = 0;
 470         goto out_done;
 471
 472 err_out_tag:
 473         pm8001_tag_free(pm8001_ha, tag);
 474 err_out:
 475         dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc);
 476         if (!sas_protocol_ata(t->task_proto))
 477                 if (n_elem)
 478                         dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem,
 479                                 t->data_dir);
 480 out_done:
 481         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 482         return rc;
 483 }
 484
 485 /**
 486   * pm8001_queue_command - register for upper layer used, all IO commands sent
 487   * to HBA are from this interface.
 488   * @task: the task to be execute.
 489   * @num: if can_queue great than 1, the task can be queued up. for SMP task,
 490   * we always execute one one time
 491   * @gfp_flags: gfp_flags
 492   */
 493 int pm8001_queue_command(struct sas_task *task, const int num,
 494                 gfp_t gfp_flags)
 495 {
 496         return pm8001_task_exec(task, num, gfp_flags, 0, NULL);
 497 }
 498
 499 void pm8001_ccb_free(struct pm8001_hba_info *pm8001_ha, u32 ccb_idx)
 500 {
 501         pm8001_tag_clear(pm8001_ha, ccb_idx);
 502 }
 503
 504 /**
 505   * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb.
 506   * @pm8001_ha: our hba card information
 507   * @ccb: the ccb which attached to ssp task
 508   * @task: the task to be free.
 509   * @ccb_idx: ccb index.
 510   */
 511 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha,
 512         struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx)
 513 {
 514         if (!ccb->task)
 515                 return;
 516         if (!sas_protocol_ata(task->task_proto))
 517                 if (ccb->n_elem)
 518                         dma_unmap_sg(pm8001_ha->dev, task->scatter,
 519                                 task->num_scatter, task->data_dir);
 520
 521         switch (task->task_proto) {
 522         case SAS_PROTOCOL_SMP:
 523                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1,
 524                         PCI_DMA_FROMDEVICE);
 525                 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1,
 526                         PCI_DMA_TODEVICE);
 527                 break;
 528
 529         case SAS_PROTOCOL_SATA:
 530         case SAS_PROTOCOL_STP:
 531         case SAS_PROTOCOL_SSP:
 532         default:
 533                 /* do nothing */
 534                 break;
 535         }
 536         task->lldd_task = NULL;
 537         ccb->task = NULL;
 538         ccb->ccb_tag = 0xFFFFFFFF;
 539         ccb->open_retry = 0;
 540         pm8001_ccb_free(pm8001_ha, ccb_idx);
 541 }
 542
 543  /**
 544   * pm8001_alloc_dev - find a empty pm8001_device
 545   * @pm8001_ha: our hba card information
 546   */
 547 struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha)
 548 {
 549         u32 dev;
 550         for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) {
 551                 if (pm8001_ha->devices[dev].dev_type == NO_DEVICE) {
 552                         pm8001_ha->devices[dev].id = dev;
 553                         return &pm8001_ha->devices[dev];
 554                 }
 555         }
 556         if (dev == PM8001_MAX_DEVICES) {
 557                 PM8001_FAIL_DBG(pm8001_ha,
 558                         pm8001_printk("max support %d devices, ignore ..\n",
 559                         PM8001_MAX_DEVICES));
 560         }
 561         return NULL;
 562 }
 563
 564 static void pm8001_free_dev(struct pm8001_device *pm8001_dev)
 565 {
 566         u32 id = pm8001_dev->id;
 567         memset(pm8001_dev, 0, sizeof(*pm8001_dev));
 568         pm8001_dev->id = id;
 569         pm8001_dev->dev_type = NO_DEVICE;
 570         pm8001_dev->device_id = PM8001_MAX_DEVICES;
 571         pm8001_dev->sas_device = NULL;
 572 }
 573
 574 /**
 575   * pm8001_dev_found_notify - libsas notify a device is found.
 576   * @dev: the device structure which sas layer used.
 577   *
 578   * when libsas find a sas domain device, it should tell the LLDD that
 579   * device is found, and then LLDD register this device to HBA firmware
 580   * by the command "OPC_INB_REG_DEV", after that the HBA will assign a
 581   * device ID(according to device's sas address) and returned it to LLDD. From
 582   * now on, we communicate with HBA FW with the device ID which HBA assigned
 583   * rather than sas address. it is the necessary step for our HBA but it is
 584   * the optional for other HBA driver.
 585   */
 586 static int pm8001_dev_found_notify(struct domain_device *dev)
 587 {
 588         unsigned long flags = 0;
 589         int res = 0;
 590         struct pm8001_hba_info *pm8001_ha = NULL;
 591         struct domain_device *parent_dev = dev->parent;
 592         struct pm8001_device *pm8001_device;
 593         DECLARE_COMPLETION_ONSTACK(completion);
 594         u32 flag = 0;
 595         pm8001_ha = pm8001_find_ha_by_dev(dev);
 596         spin_lock_irqsave(&pm8001_ha->lock, flags);
 597
 598         pm8001_device = pm8001_alloc_dev(pm8001_ha);
 599         if (!pm8001_device) {
 600                 res = -1;
 601                 goto found_out;
 602         }
 603         pm8001_device->sas_device = dev;
 604         dev->lldd_dev = pm8001_device;
 605         pm8001_device->dev_type = dev->dev_type;
 606         pm8001_device->dcompletion = &completion;
 607         if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) {
 608                 int phy_id;
 609                 struct ex_phy *phy;
 610                 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys;
 611                 phy_id++) {
 612                         phy = &parent_dev->ex_dev.ex_phy[phy_id];
 613                         if (SAS_ADDR(phy->attached_sas_addr)
 614                                 == SAS_ADDR(dev->sas_addr)) {
 615                                 pm8001_device->attached_phy = phy_id;
 616                                 break;
 617                         }
 618                 }
 619                 if (phy_id == parent_dev->ex_dev.num_phys) {
 620                         PM8001_FAIL_DBG(pm8001_ha,
 621                         pm8001_printk("Error: no attached dev:%016llx"
 622                         " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr),
 623                                 SAS_ADDR(parent_dev->sas_addr)));
 624                         res = -1;
 625                 }
 626         } else {
 627                 if (dev->dev_type == SATA_DEV) {
 628                         pm8001_device->attached_phy =
 629                                 dev->rphy->identify.phy_identifier;
 630                                 flag = 1; /* directly sata*/
 631                 }
 632         } /*register this device to HBA*/
 633         PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n"));
 634         PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag);
 635         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 636         wait_for_completion(&completion);
 637         if (dev->dev_type == SAS_END_DEV)
 638                 msleep(50);
 639         pm8001_ha->flags = PM8001F_RUN_TIME;
 640         return 0;
 641 found_out:
 642         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 643         return res;
 644 }
 645
 646 int pm8001_dev_found(struct domain_device *dev)
 647 {
 648         return pm8001_dev_found_notify(dev);
 649 }
 650
 651 static void pm8001_task_done(struct sas_task *task)
 652 {
 653         if (!del_timer(&task->slow_task->timer))
 654                 return;
 655         complete(&task->slow_task->completion);
 656 }
 657
 658 static void pm8001_tmf_timedout(unsigned long data)
 659 {
 660         struct sas_task *task = (struct sas_task *)data;
 661
 662         task->task_state_flags |= SAS_TASK_STATE_ABORTED;
 663         complete(&task->slow_task->completion);
 664 }
 665
 666 #define PM8001_TASK_TIMEOUT 20
 667 /**
 668   * pm8001_exec_internal_tmf_task - execute some task management commands.
 669   * @dev: the wanted device.
 670   * @tmf: which task management wanted to be take.
 671   * @para_len: para_len.
 672   * @parameter: ssp task parameter.
 673   *
 674   * when errors or exception happened, we may want to do something, for example
 675   * abort the issued task which result in this execption, it is done by calling
 676   * this function, note it is also with the task execute interface.
 677   */
 678 static int pm8001_exec_internal_tmf_task(struct domain_device *dev,
 679         void *parameter, u32 para_len, struct pm8001_tmf_task *tmf)
 680 {
 681         int res, retry;
 682         struct sas_task *task = NULL;
 683         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
 684
 685         for (retry = 0; retry < 3; retry++) {
 686                 task = sas_alloc_slow_task(GFP_KERNEL);
 687                 if (!task)
 688                         return -ENOMEM;
 689
 690                 task->dev = dev;
 691                 task->task_proto = dev->tproto;
 692                 memcpy(&task->ssp_task, parameter, para_len);
 693                 task->task_done = pm8001_task_done;
 694                 task->slow_task->timer.data = (unsigned long)task;
 695                 task->slow_task->timer.function = pm8001_tmf_timedout;
 696                 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ;
 697                 add_timer(&task->slow_task->timer);
 698
 699                 res = pm8001_task_exec(task, 1, GFP_KERNEL, 1, tmf);
 700
 701                 if (res) {
 702                         del_timer(&task->slow_task->timer);
 703                         PM8001_FAIL_DBG(pm8001_ha,
 704                                 pm8001_printk("Executing internal task "
 705                                 "failed\n"));
 706                         goto ex_err;
 707                 }
 708                 wait_for_completion(&task->slow_task->completion);
 709                 res = -TMF_RESP_FUNC_FAILED;
 710                 /* Even TMF timed out, return direct. */
 711                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 712                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 713                                 PM8001_FAIL_DBG(pm8001_ha,
 714                                         pm8001_printk("TMF task[%x]timeout.\n",
 715                                         tmf->tmf));
 716                                 goto ex_err;
 717                         }
 718                 }
 719
 720                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 721                         task->task_status.stat == SAM_STAT_GOOD) {
 722                         res = TMF_RESP_FUNC_COMPLETE;
 723                         break;
 724                 }
 725
 726                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 727                 task->task_status.stat == SAS_DATA_UNDERRUN) {
 728                         /* no error, but return the number of bytes of
 729                         * underrun */
 730                         res = task->task_status.residual;
 731                         break;
 732                 }
 733
 734                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 735                         task->task_status.stat == SAS_DATA_OVERRUN) {
 736                         PM8001_FAIL_DBG(pm8001_ha,
 737                                 pm8001_printk("Blocked task error.\n"));
 738                         res = -EMSGSIZE;
 739                         break;
 740                 } else {
 741                         PM8001_EH_DBG(pm8001_ha,
 742                                 pm8001_printk(" Task to dev %016llx response:"
 743                                 "0x%x status 0x%x\n",
 744                                 SAS_ADDR(dev->sas_addr),
 745                                 task->task_status.resp,
 746                                 task->task_status.stat));
 747                         sas_free_task(task);
 748                         task = NULL;
 749                 }
 750         }
 751 ex_err:
 752         BUG_ON(retry == 3 && task != NULL);
 753         sas_free_task(task);
 754         return res;
 755 }
 756
 757 static int
 758 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha,
 759         struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag,
 760         u32 task_tag)
 761 {
 762         int res, retry;
 763         u32 ccb_tag;
 764         struct pm8001_ccb_info *ccb;
 765         struct sas_task *task = NULL;
 766
 767         for (retry = 0; retry < 3; retry++) {
 768                 task = sas_alloc_slow_task(GFP_KERNEL);
 769                 if (!task)
 770                         return -ENOMEM;
 771
 772                 task->dev = dev;
 773                 task->task_proto = dev->tproto;
 774                 task->task_done = pm8001_task_done;
 775                 task->slow_task->timer.data = (unsigned long)task;
 776                 task->slow_task->timer.function = pm8001_tmf_timedout;
 777                 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ;
 778                 add_timer(&task->slow_task->timer);
 779
 780                 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag);
 781                 if (res)
 782                         return res;
 783                 ccb = &pm8001_ha->ccb_info[ccb_tag];
 784                 ccb->device = pm8001_dev;
 785                 ccb->ccb_tag = ccb_tag;
 786                 ccb->task = task;
 787
 788                 res = PM8001_CHIP_DISP->task_abort(pm8001_ha,
 789                         pm8001_dev, flag, task_tag, ccb_tag);
 790
 791                 if (res) {
 792                         del_timer(&task->slow_task->timer);
 793                         PM8001_FAIL_DBG(pm8001_ha,
 794                                 pm8001_printk("Executing internal task "
 795                                 "failed\n"));
 796                         goto ex_err;
 797                 }
 798                 wait_for_completion(&task->slow_task->completion);
 799                 res = TMF_RESP_FUNC_FAILED;
 800                 /* Even TMF timed out, return direct. */
 801                 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) {
 802                         if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) {
 803                                 PM8001_FAIL_DBG(pm8001_ha,
 804                                         pm8001_printk("TMF task timeout.\n"));
 805                                 goto ex_err;
 806                         }
 807                 }
 808
 809                 if (task->task_status.resp == SAS_TASK_COMPLETE &&
 810                         task->task_status.stat == SAM_STAT_GOOD) {
 811                         res = TMF_RESP_FUNC_COMPLETE;
 812                         break;
 813
 814                 } else {
 815                         PM8001_EH_DBG(pm8001_ha,
 816                                 pm8001_printk(" Task to dev %016llx response: "
 817                                         "0x%x status 0x%x\n",
 818                                 SAS_ADDR(dev->sas_addr),
 819                                 task->task_status.resp,
 820                                 task->task_status.stat));
 821                         sas_free_task(task);
 822                         task = NULL;
 823                 }
 824         }
 825 ex_err:
 826         BUG_ON(retry == 3 && task != NULL);
 827         sas_free_task(task);
 828         return res;
 829 }
 830
 831 /**
 832   * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify"
 833   * @dev: the device structure which sas layer used.
 834   */
 835 static void pm8001_dev_gone_notify(struct domain_device *dev)
 836 {
 837         unsigned long flags = 0;
 838         u32 tag;
 839         struct pm8001_hba_info *pm8001_ha;
 840         struct pm8001_device *pm8001_dev = dev->lldd_dev;
 841
 842         pm8001_ha = pm8001_find_ha_by_dev(dev);
 843         spin_lock_irqsave(&pm8001_ha->lock, flags);
 844         pm8001_tag_alloc(pm8001_ha, &tag);
 845         if (pm8001_dev) {
 846                 u32 device_id = pm8001_dev->device_id;
 847
 848                 PM8001_DISC_DBG(pm8001_ha,
 849                         pm8001_printk("found dev[%d:%x] is gone.\n",
 850                         pm8001_dev->device_id, pm8001_dev->dev_type));
 851                 if (pm8001_dev->running_req) {
 852                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 853                         pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 854                                 dev, 1, 0);
 855                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 856                 }
 857                 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id);
 858                 pm8001_free_dev(pm8001_dev);
 859         } else {
 860                 PM8001_DISC_DBG(pm8001_ha,
 861                         pm8001_printk("Found dev has gone.\n"));
 862         }
 863         dev->lldd_dev = NULL;
 864         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 865 }
 866
 867 void pm8001_dev_gone(struct domain_device *dev)
 868 {
 869         pm8001_dev_gone_notify(dev);
 870 }
 871
 872 static int pm8001_issue_ssp_tmf(struct domain_device *dev,
 873         u8 *lun, struct pm8001_tmf_task *tmf)
 874 {
 875         struct sas_ssp_task ssp_task;
 876         if (!(dev->tproto & SAS_PROTOCOL_SSP))
 877                 return TMF_RESP_FUNC_ESUPP;
 878
 879         strncpy((u8 *)&ssp_task.LUN, lun, 8);
 880         return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task),
 881                 tmf);
 882 }
 883
 884 /* retry commands by ha, by task and/or by device */
 885 void pm8001_open_reject_retry(
 886         struct pm8001_hba_info *pm8001_ha,
 887         struct sas_task *task_to_close,
 888         struct pm8001_device *device_to_close)
 889 {
 890         int i;
 891         unsigned long flags;
 892
 893         if (pm8001_ha == NULL)
 894                 return;
 895
 896         spin_lock_irqsave(&pm8001_ha->lock, flags);
 897
 898         for (i = 0; i < PM8001_MAX_CCB; i++) {
 899                 struct sas_task *task;
 900                 struct task_status_struct *ts;
 901                 struct pm8001_device *pm8001_dev;
 902                 unsigned long flags1;
 903                 u32 tag;
 904                 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i];
 905
 906                 pm8001_dev = ccb->device;
 907                 if (!pm8001_dev || (pm8001_dev->dev_type == NO_DEVICE))
 908                         continue;
 909                 if (!device_to_close) {
 910                         uintptr_t d = (uintptr_t)pm8001_dev
 911                                         - (uintptr_t)&pm8001_ha->devices;
 912                         if (((d % sizeof(*pm8001_dev)) != 0)
 913                          || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES))
 914                                 continue;
 915                 } else if (pm8001_dev != device_to_close)
 916                         continue;
 917                 tag = ccb->ccb_tag;
 918                 if (!tag || (tag == 0xFFFFFFFF))
 919                         continue;
 920                 task = ccb->task;
 921                 if (!task || !task->task_done)
 922                         continue;
 923                 if (task_to_close && (task != task_to_close))
 924                         continue;
 925                 ts = &task->task_status;
 926                 ts->resp = SAS_TASK_COMPLETE;
 927                 /* Force the midlayer to retry */
 928                 ts->stat = SAS_OPEN_REJECT;
 929                 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY;
 930                 if (pm8001_dev)
 931                         pm8001_dev->running_req--;
 932                 spin_lock_irqsave(&task->task_state_lock, flags1);
 933                 task->task_state_flags &= ~SAS_TASK_STATE_PENDING;
 934                 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR;
 935                 task->task_state_flags |= SAS_TASK_STATE_DONE;
 936                 if (unlikely((task->task_state_flags
 937                                 & SAS_TASK_STATE_ABORTED))) {
 938                         spin_unlock_irqrestore(&task->task_state_lock,
 939                                 flags1);
 940                         pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
 941                 } else {
 942                         spin_unlock_irqrestore(&task->task_state_lock,
 943                                 flags1);
 944                         pm8001_ccb_task_free(pm8001_ha, task, ccb, tag);
 945                         mb();/* in order to force CPU ordering */
 946                         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 947                         task->task_done(task);
 948                         spin_lock_irqsave(&pm8001_ha->lock, flags);
 949                 }
 950         }
 951
 952         spin_unlock_irqrestore(&pm8001_ha->lock, flags);
 953 }
 954
 955 /**
 956   * Standard mandates link reset for ATA  (type 0) and hard reset for
 957   * SSP (type 1) , only for RECOVERY
 958   */
 959 int pm8001_I_T_nexus_reset(struct domain_device *dev)
 960 {
 961         int rc = TMF_RESP_FUNC_FAILED;
 962         struct pm8001_device *pm8001_dev;
 963         struct pm8001_hba_info *pm8001_ha;
 964         struct sas_phy *phy;
 965
 966         if (!dev || !dev->lldd_dev)
 967                 return -ENODEV;
 968
 969         pm8001_dev = dev->lldd_dev;
 970         pm8001_ha = pm8001_find_ha_by_dev(dev);
 971         phy = sas_get_local_phy(dev);
 972
 973         if (dev_is_sata(dev)) {
 974                 DECLARE_COMPLETION_ONSTACK(completion_setstate);
 975                 if (scsi_is_sas_phy_local(phy)) {
 976                         rc = 0;
 977                         goto out;
 978                 }
 979                 rc = sas_phy_reset(phy, 1);
 980                 msleep(2000);
 981                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
 982                         dev, 1, 0);
 983                 pm8001_dev->setds_completion = &completion_setstate;
 984                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
 985                         pm8001_dev, 0x01);
 986                 wait_for_completion(&completion_setstate);
 987         } else {
 988                 rc = sas_phy_reset(phy, 1);
 989                 msleep(2000);
 990         }
 991         PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n",
 992                 pm8001_dev->device_id, rc));
 993  out:
 994         sas_put_local_phy(phy);
 995         return rc;
 996 }
 997
 998 /* mandatory SAM-3, the task reset the specified LUN*/
 999 int pm8001_lu_reset(struct domain_device *dev, u8 *lun)
1000 {
1001         int rc = TMF_RESP_FUNC_FAILED;
1002         struct pm8001_tmf_task tmf_task;
1003         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1004         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1005         if (dev_is_sata(dev)) {
1006                 struct sas_phy *phy = sas_get_local_phy(dev);
1007                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev ,
1008                         dev, 1, 0);
1009                 rc = sas_phy_reset(phy, 1);
1010                 sas_put_local_phy(phy);
1011                 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha,
1012                         pm8001_dev, 0x01);
1013                 msleep(2000);
1014         } else {
1015                 tmf_task.tmf = TMF_LU_RESET;
1016                 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1017         }
1018         /* If failed, fall-through I_T_Nexus reset */
1019         PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n",
1020                 pm8001_dev->device_id, rc));
1021         return rc;
1022 }
1023
1024 /* optional SAM-3 */
1025 int pm8001_query_task(struct sas_task *task)
1026 {
1027         u32 tag = 0xdeadbeef;
1028         int i = 0;
1029         struct scsi_lun lun;
1030         struct pm8001_tmf_task tmf_task;
1031         int rc = TMF_RESP_FUNC_FAILED;
1032         if (unlikely(!task || !task->lldd_task || !task->dev))
1033                 return rc;
1034
1035         if (task->task_proto & SAS_PROTOCOL_SSP) {
1036                 struct scsi_cmnd *cmnd = task->uldd_task;
1037                 struct domain_device *dev = task->dev;
1038                 struct pm8001_hba_info *pm8001_ha =
1039                         pm8001_find_ha_by_dev(dev);
1040
1041                 int_to_scsilun(cmnd->device->lun, &lun);
1042                 rc = pm8001_find_tag(task, &tag);
1043                 if (rc == 0) {
1044                         rc = TMF_RESP_FUNC_FAILED;
1045                         return rc;
1046                 }
1047                 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:["));
1048                 for (i = 0; i < 16; i++)
1049                         printk(KERN_INFO "%02x ", cmnd->cmnd[i]);
1050                 printk(KERN_INFO "]\n");
1051                 tmf_task.tmf =  TMF_QUERY_TASK;
1052                 tmf_task.tag_of_task_to_be_managed = tag;
1053
1054                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1055                 switch (rc) {
1056                 /* The task is still in Lun, release it then */
1057                 case TMF_RESP_FUNC_SUCC:
1058                         PM8001_EH_DBG(pm8001_ha,
1059                                 pm8001_printk("The task is still in Lun\n"));
1060                         break;
1061                 /* The task is not in Lun or failed, reset the phy */
1062                 case TMF_RESP_FUNC_FAILED:
1063                 case TMF_RESP_FUNC_COMPLETE:
1064                         PM8001_EH_DBG(pm8001_ha,
1065                         pm8001_printk("The task is not in Lun or failed,"
1066                         " reset the phy\n"));
1067                         break;
1068                 }
1069         }
1070         pm8001_printk(":rc= %d\n", rc);
1071         return rc;
1072 }
1073
1074 /*  mandatory SAM-3, still need free task/ccb info, abord the specified task */
1075 int pm8001_abort_task(struct sas_task *task)
1076 {
1077         unsigned long flags;
1078         u32 tag = 0xdeadbeef;
1079         u32 device_id;
1080         struct domain_device *dev ;
1081         struct pm8001_hba_info *pm8001_ha = NULL;
1082         struct pm8001_ccb_info *ccb;
1083         struct scsi_lun lun;
1084         struct pm8001_device *pm8001_dev;
1085         struct pm8001_tmf_task tmf_task;
1086         int rc = TMF_RESP_FUNC_FAILED;
1087         if (unlikely(!task || !task->lldd_task || !task->dev))
1088                 return rc;
1089         spin_lock_irqsave(&task->task_state_lock, flags);
1090         if (task->task_state_flags & SAS_TASK_STATE_DONE) {
1091                 spin_unlock_irqrestore(&task->task_state_lock, flags);
1092                 rc = TMF_RESP_FUNC_COMPLETE;
1093                 goto out;
1094         }
1095         spin_unlock_irqrestore(&task->task_state_lock, flags);
1096         if (task->task_proto & SAS_PROTOCOL_SSP) {
1097                 struct scsi_cmnd *cmnd = task->uldd_task;
1098                 dev = task->dev;
1099                 ccb = task->lldd_task;
1100                 pm8001_dev = dev->lldd_dev;
1101                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1102                 int_to_scsilun(cmnd->device->lun, &lun);
1103                 rc = pm8001_find_tag(task, &tag);
1104                 if (rc == 0) {
1105                         printk(KERN_INFO "No such tag in %s\n", __func__);
1106                         rc = TMF_RESP_FUNC_FAILED;
1107                         return rc;
1108                 }
1109                 device_id = pm8001_dev->device_id;
1110                 PM8001_EH_DBG(pm8001_ha,
1111                         pm8001_printk("abort io to deviceid= %d\n", device_id));
1112                 tmf_task.tmf = TMF_ABORT_TASK;
1113                 tmf_task.tag_of_task_to_be_managed = tag;
1114                 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task);
1115                 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1116                         pm8001_dev->sas_device, 0, tag);
1117         } else if (task->task_proto & SAS_PROTOCOL_SATA ||
1118                 task->task_proto & SAS_PROTOCOL_STP) {
1119                 dev = task->dev;
1120                 pm8001_dev = dev->lldd_dev;
1121                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1122                 rc = pm8001_find_tag(task, &tag);
1123                 if (rc == 0) {
1124                         printk(KERN_INFO "No such tag in %s\n", __func__);
1125                         rc = TMF_RESP_FUNC_FAILED;
1126                         return rc;
1127                 }
1128                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1129                         pm8001_dev->sas_device, 0, tag);
1130         } else if (task->task_proto & SAS_PROTOCOL_SMP) {
1131                 /* SMP */
1132                 dev = task->dev;
1133                 pm8001_dev = dev->lldd_dev;
1134                 pm8001_ha = pm8001_find_ha_by_dev(dev);
1135                 rc = pm8001_find_tag(task, &tag);
1136                 if (rc == 0) {
1137                         printk(KERN_INFO "No such tag in %s\n", __func__);
1138                         rc = TMF_RESP_FUNC_FAILED;
1139                         return rc;
1140                 }
1141                 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev,
1142                         pm8001_dev->sas_device, 0, tag);
1143
1144         }
1145 out:
1146         if (rc != TMF_RESP_FUNC_COMPLETE)
1147                 pm8001_printk("rc= %d\n", rc);
1148         return rc;
1149 }
1150
1151 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun)
1152 {
1153         int rc = TMF_RESP_FUNC_FAILED;
1154         struct pm8001_tmf_task tmf_task;
1155
1156         tmf_task.tmf = TMF_ABORT_TASK_SET;
1157         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1158         return rc;
1159 }
1160
1161 int pm8001_clear_aca(struct domain_device *dev, u8 *lun)
1162 {
1163         int rc = TMF_RESP_FUNC_FAILED;
1164         struct pm8001_tmf_task tmf_task;
1165
1166         tmf_task.tmf = TMF_CLEAR_ACA;
1167         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1168
1169         return rc;
1170 }
1171
1172 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun)
1173 {
1174         int rc = TMF_RESP_FUNC_FAILED;
1175         struct pm8001_tmf_task tmf_task;
1176         struct pm8001_device *pm8001_dev = dev->lldd_dev;
1177         struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev);
1178
1179         PM8001_EH_DBG(pm8001_ha,
1180                 pm8001_printk("I_T_L_Q clear task set[%x]\n",
1181                 pm8001_dev->device_id));
1182         tmf_task.tmf = TMF_CLEAR_TASK_SET;
1183         rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task);
1184         return rc;
1185 }
1186