1 /* 2 * PMC-Sierra PM8001/8081/8088/8089 SAS/SATA based host adapters driver 3 * 4 * Copyright (c) 2008-2009 USI Co., Ltd. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions, and the following disclaimer, 12 * without modification. 13 * 2. Redistributions in binary form must reproduce at minimum a disclaimer 14 * substantially similar to the "NO WARRANTY" disclaimer below 15 * ("Disclaimer") and any redistribution must be conditioned upon 16 * including a substantially similar Disclaimer requirement for further 17 * binary redistribution. 18 * 3. Neither the names of the above-listed copyright holders nor the names 19 * of any contributors may be used to endorse or promote products derived 20 * from this software without specific prior written permission. 21 * 22 * Alternatively, this software may be distributed under the terms of the 23 * GNU General Public License ("GPL") version 2 as published by the Free 24 * Software Foundation. 25 * 26 * NO WARRANTY 27 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 28 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 29 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 30 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 31 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 33 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 34 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 35 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 36 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 37 * POSSIBILITY OF SUCH DAMAGES. 38 * 39 */ 40 41 #include <linux/slab.h> 42 #include "pm8001_sas.h" 43 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_free - free the no more needed tag 62 * @pm8001_ha: our hba struct 63 * @tag: the found tag associated with the task 64 */ 65 void pm8001_tag_free(struct pm8001_hba_info *pm8001_ha, u32 tag) 66 { 67 void *bitmap = pm8001_ha->tags; 68 clear_bit(tag, bitmap); 69 } 70 71 /** 72 * pm8001_tag_alloc - allocate a empty tag for task used. 73 * @pm8001_ha: our hba struct 74 * @tag_out: the found empty tag . 75 */ 76 inline int pm8001_tag_alloc(struct pm8001_hba_info *pm8001_ha, u32 *tag_out) 77 { 78 unsigned int tag; 79 void *bitmap = pm8001_ha->tags; 80 unsigned long flags; 81 82 spin_lock_irqsave(&pm8001_ha->bitmap_lock, flags); 83 tag = find_first_zero_bit(bitmap, pm8001_ha->tags_num); 84 if (tag >= pm8001_ha->tags_num) { 85 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); 86 return -SAS_QUEUE_FULL; 87 } 88 set_bit(tag, bitmap); 89 spin_unlock_irqrestore(&pm8001_ha->bitmap_lock, flags); 90 *tag_out = tag; 91 return 0; 92 } 93 94 void pm8001_tag_init(struct pm8001_hba_info *pm8001_ha) 95 { 96 int i; 97 for (i = 0; i < pm8001_ha->tags_num; ++i) 98 pm8001_tag_free(pm8001_ha, i); 99 } 100 101 /** 102 * pm8001_mem_alloc - allocate memory for pm8001. 103 * @pdev: pci device. 104 * @virt_addr: the allocated virtual address 105 * @pphys_addr_hi: the physical address high byte address. 106 * @pphys_addr_lo: the physical address low byte address. 107 * @mem_size: memory size. 108 */ 109 int pm8001_mem_alloc(struct pci_dev *pdev, void **virt_addr, 110 dma_addr_t *pphys_addr, u32 *pphys_addr_hi, 111 u32 *pphys_addr_lo, u32 mem_size, u32 align) 112 { 113 caddr_t mem_virt_alloc; 114 dma_addr_t mem_dma_handle; 115 u64 phys_align; 116 u64 align_offset = 0; 117 if (align) 118 align_offset = (dma_addr_t)align - 1; 119 mem_virt_alloc = pci_zalloc_consistent(pdev, mem_size + align, 120 &mem_dma_handle); 121 if (!mem_virt_alloc) { 122 pm8001_printk("memory allocation error\n"); 123 return -1; 124 } 125 *pphys_addr = mem_dma_handle; 126 phys_align = (*pphys_addr + align_offset) & ~align_offset; 127 *virt_addr = (void *)mem_virt_alloc + phys_align - *pphys_addr; 128 *pphys_addr_hi = upper_32_bits(phys_align); 129 *pphys_addr_lo = lower_32_bits(phys_align); 130 return 0; 131 } 132 /** 133 * pm8001_find_ha_by_dev - from domain device which come from sas layer to 134 * find out our hba struct. 135 * @dev: the domain device which from sas layer. 136 */ 137 static 138 struct pm8001_hba_info *pm8001_find_ha_by_dev(struct domain_device *dev) 139 { 140 struct sas_ha_struct *sha = dev->port->ha; 141 struct pm8001_hba_info *pm8001_ha = sha->lldd_ha; 142 return pm8001_ha; 143 } 144 145 /** 146 * pm8001_phy_control - this function should be registered to 147 * sas_domain_function_template to provide libsas used, note: this is just 148 * control the HBA phy rather than other expander phy if you want control 149 * other phy, you should use SMP command. 150 * @sas_phy: which phy in HBA phys. 151 * @func: the operation. 152 * @funcdata: always NULL. 153 */ 154 int pm8001_phy_control(struct asd_sas_phy *sas_phy, enum phy_func func, 155 void *funcdata) 156 { 157 int rc = 0, phy_id = sas_phy->id; 158 struct pm8001_hba_info *pm8001_ha = NULL; 159 struct sas_phy_linkrates *rates; 160 DECLARE_COMPLETION_ONSTACK(completion); 161 unsigned long flags; 162 pm8001_ha = sas_phy->ha->lldd_ha; 163 pm8001_ha->phy[phy_id].enable_completion = &completion; 164 switch (func) { 165 case PHY_FUNC_SET_LINK_RATE: 166 rates = funcdata; 167 if (rates->minimum_linkrate) { 168 pm8001_ha->phy[phy_id].minimum_linkrate = 169 rates->minimum_linkrate; 170 } 171 if (rates->maximum_linkrate) { 172 pm8001_ha->phy[phy_id].maximum_linkrate = 173 rates->maximum_linkrate; 174 } 175 if (pm8001_ha->phy[phy_id].phy_state == 0) { 176 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, phy_id); 177 wait_for_completion(&completion); 178 } 179 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, 180 PHY_LINK_RESET); 181 break; 182 case PHY_FUNC_HARD_RESET: 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_HARD_RESET); 189 break; 190 case PHY_FUNC_LINK_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_LINK_RESET); 197 break; 198 case PHY_FUNC_RELEASE_SPINUP_HOLD: 199 PM8001_CHIP_DISP->phy_ctl_req(pm8001_ha, phy_id, 200 PHY_LINK_RESET); 201 break; 202 case PHY_FUNC_DISABLE: 203 PM8001_CHIP_DISP->phy_stop_req(pm8001_ha, phy_id); 204 break; 205 case PHY_FUNC_GET_EVENTS: 206 spin_lock_irqsave(&pm8001_ha->lock, flags); 207 if (pm8001_ha->chip_id == chip_8001) { 208 if (-1 == pm8001_bar4_shift(pm8001_ha, 209 (phy_id < 4) ? 0x30000 : 0x40000)) { 210 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 211 return -EINVAL; 212 } 213 } 214 { 215 struct sas_phy *phy = sas_phy->phy; 216 uint32_t *qp = (uint32_t *)(((char *) 217 pm8001_ha->io_mem[2].memvirtaddr) 218 + 0x1034 + (0x4000 * (phy_id & 3))); 219 220 phy->invalid_dword_count = qp[0]; 221 phy->running_disparity_error_count = qp[1]; 222 phy->loss_of_dword_sync_count = qp[3]; 223 phy->phy_reset_problem_count = qp[4]; 224 } 225 if (pm8001_ha->chip_id == chip_8001) 226 pm8001_bar4_shift(pm8001_ha, 0); 227 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 228 return 0; 229 default: 230 rc = -EOPNOTSUPP; 231 } 232 msleep(300); 233 return rc; 234 } 235 236 /** 237 * pm8001_scan_start - we should enable all HBA phys by sending the phy_start 238 * command to HBA. 239 * @shost: the scsi host data. 240 */ 241 void pm8001_scan_start(struct Scsi_Host *shost) 242 { 243 int i; 244 struct pm8001_hba_info *pm8001_ha; 245 struct sas_ha_struct *sha = SHOST_TO_SAS_HA(shost); 246 pm8001_ha = sha->lldd_ha; 247 /* SAS_RE_INITIALIZATION not available in SPCv/ve */ 248 if (pm8001_ha->chip_id == chip_8001) 249 PM8001_CHIP_DISP->sas_re_init_req(pm8001_ha); 250 for (i = 0; i < pm8001_ha->chip->n_phy; ++i) 251 PM8001_CHIP_DISP->phy_start_req(pm8001_ha, i); 252 } 253 254 int pm8001_scan_finished(struct Scsi_Host *shost, unsigned long time) 255 { 256 struct sas_ha_struct *ha = SHOST_TO_SAS_HA(shost); 257 258 /* give the phy enabling interrupt event time to come in (1s 259 * is empirically about all it takes) */ 260 if (time < HZ) 261 return 0; 262 /* Wait for discovery to finish */ 263 sas_drain_work(ha); 264 return 1; 265 } 266 267 /** 268 * pm8001_task_prep_smp - the dispatcher function, prepare data for smp task 269 * @pm8001_ha: our hba card information 270 * @ccb: the ccb which attached to smp task 271 */ 272 static int pm8001_task_prep_smp(struct pm8001_hba_info *pm8001_ha, 273 struct pm8001_ccb_info *ccb) 274 { 275 return PM8001_CHIP_DISP->smp_req(pm8001_ha, ccb); 276 } 277 278 u32 pm8001_get_ncq_tag(struct sas_task *task, u32 *tag) 279 { 280 struct ata_queued_cmd *qc = task->uldd_task; 281 if (qc) { 282 if (qc->tf.command == ATA_CMD_FPDMA_WRITE || 283 qc->tf.command == ATA_CMD_FPDMA_READ) { 284 *tag = qc->tag; 285 return 1; 286 } 287 } 288 return 0; 289 } 290 291 /** 292 * pm8001_task_prep_ata - the dispatcher function, prepare data for sata task 293 * @pm8001_ha: our hba card information 294 * @ccb: the ccb which attached to sata task 295 */ 296 static int pm8001_task_prep_ata(struct pm8001_hba_info *pm8001_ha, 297 struct pm8001_ccb_info *ccb) 298 { 299 return PM8001_CHIP_DISP->sata_req(pm8001_ha, ccb); 300 } 301 302 /** 303 * pm8001_task_prep_ssp_tm - the dispatcher function, prepare task management data 304 * @pm8001_ha: our hba card information 305 * @ccb: the ccb which attached to TM 306 * @tmf: the task management IU 307 */ 308 static int pm8001_task_prep_ssp_tm(struct pm8001_hba_info *pm8001_ha, 309 struct pm8001_ccb_info *ccb, struct pm8001_tmf_task *tmf) 310 { 311 return PM8001_CHIP_DISP->ssp_tm_req(pm8001_ha, ccb, tmf); 312 } 313 314 /** 315 * pm8001_task_prep_ssp - the dispatcher function,prepare ssp data for ssp task 316 * @pm8001_ha: our hba card information 317 * @ccb: the ccb which attached to ssp task 318 */ 319 static int pm8001_task_prep_ssp(struct pm8001_hba_info *pm8001_ha, 320 struct pm8001_ccb_info *ccb) 321 { 322 return PM8001_CHIP_DISP->ssp_io_req(pm8001_ha, ccb); 323 } 324 325 /* Find the local port id that's attached to this device */ 326 static int sas_find_local_port_id(struct domain_device *dev) 327 { 328 struct domain_device *pdev = dev->parent; 329 330 /* Directly attached device */ 331 if (!pdev) 332 return dev->port->id; 333 while (pdev) { 334 struct domain_device *pdev_p = pdev->parent; 335 if (!pdev_p) 336 return pdev->port->id; 337 pdev = pdev->parent; 338 } 339 return 0; 340 } 341 342 /** 343 * pm8001_task_exec - queue the task(ssp, smp && ata) to the hardware. 344 * @task: the task to be execute. 345 * @num: if can_queue great than 1, the task can be queued up. for SMP task, 346 * we always execute one one time. 347 * @gfp_flags: gfp_flags. 348 * @is_tmf: if it is task management task. 349 * @tmf: the task management IU 350 */ 351 #define DEV_IS_GONE(pm8001_dev) \ 352 ((!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED))) 353 static int pm8001_task_exec(struct sas_task *task, 354 gfp_t gfp_flags, int is_tmf, struct pm8001_tmf_task *tmf) 355 { 356 struct domain_device *dev = task->dev; 357 struct pm8001_hba_info *pm8001_ha; 358 struct pm8001_device *pm8001_dev; 359 struct pm8001_port *port = NULL; 360 struct sas_task *t = task; 361 struct pm8001_ccb_info *ccb; 362 u32 tag = 0xdeadbeef, rc, n_elem = 0; 363 unsigned long flags = 0; 364 365 if (!dev->port) { 366 struct task_status_struct *tsm = &t->task_status; 367 tsm->resp = SAS_TASK_UNDELIVERED; 368 tsm->stat = SAS_PHY_DOWN; 369 if (dev->dev_type != SAS_SATA_DEV) 370 t->task_done(t); 371 return 0; 372 } 373 pm8001_ha = pm8001_find_ha_by_dev(task->dev); 374 PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n ")); 375 spin_lock_irqsave(&pm8001_ha->lock, flags); 376 do { 377 dev = t->dev; 378 pm8001_dev = dev->lldd_dev; 379 port = &pm8001_ha->port[sas_find_local_port_id(dev)]; 380 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) { 381 if (sas_protocol_ata(t->task_proto)) { 382 struct task_status_struct *ts = &t->task_status; 383 ts->resp = SAS_TASK_UNDELIVERED; 384 ts->stat = SAS_PHY_DOWN; 385 386 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 387 t->task_done(t); 388 spin_lock_irqsave(&pm8001_ha->lock, flags); 389 continue; 390 } else { 391 struct task_status_struct *ts = &t->task_status; 392 ts->resp = SAS_TASK_UNDELIVERED; 393 ts->stat = SAS_PHY_DOWN; 394 t->task_done(t); 395 continue; 396 } 397 } 398 rc = pm8001_tag_alloc(pm8001_ha, &tag); 399 if (rc) 400 goto err_out; 401 ccb = &pm8001_ha->ccb_info[tag]; 402 403 if (!sas_protocol_ata(t->task_proto)) { 404 if (t->num_scatter) { 405 n_elem = dma_map_sg(pm8001_ha->dev, 406 t->scatter, 407 t->num_scatter, 408 t->data_dir); 409 if (!n_elem) { 410 rc = -ENOMEM; 411 goto err_out_tag; 412 } 413 } 414 } else { 415 n_elem = t->num_scatter; 416 } 417 418 t->lldd_task = ccb; 419 ccb->n_elem = n_elem; 420 ccb->ccb_tag = tag; 421 ccb->task = t; 422 ccb->device = pm8001_dev; 423 switch (t->task_proto) { 424 case SAS_PROTOCOL_SMP: 425 rc = pm8001_task_prep_smp(pm8001_ha, ccb); 426 break; 427 case SAS_PROTOCOL_SSP: 428 if (is_tmf) 429 rc = pm8001_task_prep_ssp_tm(pm8001_ha, 430 ccb, tmf); 431 else 432 rc = pm8001_task_prep_ssp(pm8001_ha, ccb); 433 break; 434 case SAS_PROTOCOL_SATA: 435 case SAS_PROTOCOL_STP: 436 rc = pm8001_task_prep_ata(pm8001_ha, ccb); 437 break; 438 default: 439 dev_printk(KERN_ERR, pm8001_ha->dev, 440 "unknown sas_task proto: 0x%x\n", 441 t->task_proto); 442 rc = -EINVAL; 443 break; 444 } 445 446 if (rc) { 447 PM8001_IO_DBG(pm8001_ha, 448 pm8001_printk("rc is %x\n", rc)); 449 goto err_out_tag; 450 } 451 /* TODO: select normal or high priority */ 452 spin_lock(&t->task_state_lock); 453 t->task_state_flags |= SAS_TASK_AT_INITIATOR; 454 spin_unlock(&t->task_state_lock); 455 pm8001_dev->running_req++; 456 } while (0); 457 rc = 0; 458 goto out_done; 459 460 err_out_tag: 461 pm8001_tag_free(pm8001_ha, tag); 462 err_out: 463 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); 464 if (!sas_protocol_ata(t->task_proto)) 465 if (n_elem) 466 dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, 467 t->data_dir); 468 out_done: 469 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 470 return rc; 471 } 472 473 /** 474 * pm8001_queue_command - register for upper layer used, all IO commands sent 475 * to HBA are from this interface. 476 * @task: the task to be execute. 477 * @gfp_flags: gfp_flags 478 */ 479 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags) 480 { 481 return pm8001_task_exec(task, gfp_flags, 0, NULL); 482 } 483 484 /** 485 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb. 486 * @pm8001_ha: our hba card information 487 * @ccb: the ccb which attached to ssp task 488 * @task: the task to be free. 489 * @ccb_idx: ccb index. 490 */ 491 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, 492 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) 493 { 494 if (!ccb->task) 495 return; 496 if (!sas_protocol_ata(task->task_proto)) 497 if (ccb->n_elem) 498 dma_unmap_sg(pm8001_ha->dev, task->scatter, 499 task->num_scatter, task->data_dir); 500 501 switch (task->task_proto) { 502 case SAS_PROTOCOL_SMP: 503 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1, 504 PCI_DMA_FROMDEVICE); 505 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1, 506 PCI_DMA_TODEVICE); 507 break; 508 509 case SAS_PROTOCOL_SATA: 510 case SAS_PROTOCOL_STP: 511 case SAS_PROTOCOL_SSP: 512 default: 513 /* do nothing */ 514 break; 515 } 516 task->lldd_task = NULL; 517 ccb->task = NULL; 518 ccb->ccb_tag = 0xFFFFFFFF; 519 ccb->open_retry = 0; 520 pm8001_tag_free(pm8001_ha, ccb_idx); 521 } 522 523 /** 524 * pm8001_alloc_dev - find a empty pm8001_device 525 * @pm8001_ha: our hba card information 526 */ 527 struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) 528 { 529 u32 dev; 530 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { 531 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) { 532 pm8001_ha->devices[dev].id = dev; 533 return &pm8001_ha->devices[dev]; 534 } 535 } 536 if (dev == PM8001_MAX_DEVICES) { 537 PM8001_FAIL_DBG(pm8001_ha, 538 pm8001_printk("max support %d devices, ignore ..\n", 539 PM8001_MAX_DEVICES)); 540 } 541 return NULL; 542 } 543 /** 544 * pm8001_find_dev - find a matching pm8001_device 545 * @pm8001_ha: our hba card information 546 */ 547 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, 548 u32 device_id) 549 { 550 u32 dev; 551 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { 552 if (pm8001_ha->devices[dev].device_id == device_id) 553 return &pm8001_ha->devices[dev]; 554 } 555 if (dev == PM8001_MAX_DEVICES) { 556 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING " 557 "DEVICE FOUND !!!\n")); 558 } 559 return NULL; 560 } 561 562 static void pm8001_free_dev(struct pm8001_device *pm8001_dev) 563 { 564 u32 id = pm8001_dev->id; 565 memset(pm8001_dev, 0, sizeof(*pm8001_dev)); 566 pm8001_dev->id = id; 567 pm8001_dev->dev_type = SAS_PHY_UNUSED; 568 pm8001_dev->device_id = PM8001_MAX_DEVICES; 569 pm8001_dev->sas_device = NULL; 570 } 571 572 /** 573 * pm8001_dev_found_notify - libsas notify a device is found. 574 * @dev: the device structure which sas layer used. 575 * 576 * when libsas find a sas domain device, it should tell the LLDD that 577 * device is found, and then LLDD register this device to HBA firmware 578 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a 579 * device ID(according to device's sas address) and returned it to LLDD. From 580 * now on, we communicate with HBA FW with the device ID which HBA assigned 581 * rather than sas address. it is the necessary step for our HBA but it is 582 * the optional for other HBA driver. 583 */ 584 static int pm8001_dev_found_notify(struct domain_device *dev) 585 { 586 unsigned long flags = 0; 587 int res = 0; 588 struct pm8001_hba_info *pm8001_ha = NULL; 589 struct domain_device *parent_dev = dev->parent; 590 struct pm8001_device *pm8001_device; 591 DECLARE_COMPLETION_ONSTACK(completion); 592 u32 flag = 0; 593 pm8001_ha = pm8001_find_ha_by_dev(dev); 594 spin_lock_irqsave(&pm8001_ha->lock, flags); 595 596 pm8001_device = pm8001_alloc_dev(pm8001_ha); 597 if (!pm8001_device) { 598 res = -1; 599 goto found_out; 600 } 601 pm8001_device->sas_device = dev; 602 dev->lldd_dev = pm8001_device; 603 pm8001_device->dev_type = dev->dev_type; 604 pm8001_device->dcompletion = &completion; 605 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { 606 int phy_id; 607 struct ex_phy *phy; 608 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys; 609 phy_id++) { 610 phy = &parent_dev->ex_dev.ex_phy[phy_id]; 611 if (SAS_ADDR(phy->attached_sas_addr) 612 == SAS_ADDR(dev->sas_addr)) { 613 pm8001_device->attached_phy = phy_id; 614 break; 615 } 616 } 617 if (phy_id == parent_dev->ex_dev.num_phys) { 618 PM8001_FAIL_DBG(pm8001_ha, 619 pm8001_printk("Error: no attached dev:%016llx" 620 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr), 621 SAS_ADDR(parent_dev->sas_addr))); 622 res = -1; 623 } 624 } else { 625 if (dev->dev_type == SAS_SATA_DEV) { 626 pm8001_device->attached_phy = 627 dev->rphy->identify.phy_identifier; 628 flag = 1; /* directly sata*/ 629 } 630 } /*register this device to HBA*/ 631 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n")); 632 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag); 633 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 634 wait_for_completion(&completion); 635 if (dev->dev_type == SAS_END_DEVICE) 636 msleep(50); 637 pm8001_ha->flags = PM8001F_RUN_TIME; 638 return 0; 639 found_out: 640 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 641 return res; 642 } 643 644 int pm8001_dev_found(struct domain_device *dev) 645 { 646 return pm8001_dev_found_notify(dev); 647 } 648 649 void pm8001_task_done(struct sas_task *task) 650 { 651 if (!del_timer(&task->slow_task->timer)) 652 return; 653 complete(&task->slow_task->completion); 654 } 655 656 static void pm8001_tmf_timedout(unsigned long data) 657 { 658 struct sas_task *task = (struct sas_task *)data; 659 660 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 661 complete(&task->slow_task->completion); 662 } 663 664 #define PM8001_TASK_TIMEOUT 20 665 /** 666 * pm8001_exec_internal_tmf_task - execute some task management commands. 667 * @dev: the wanted device. 668 * @tmf: which task management wanted to be take. 669 * @para_len: para_len. 670 * @parameter: ssp task parameter. 671 * 672 * when errors or exception happened, we may want to do something, for example 673 * abort the issued task which result in this execption, it is done by calling 674 * this function, note it is also with the task execute interface. 675 */ 676 static int pm8001_exec_internal_tmf_task(struct domain_device *dev, 677 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) 678 { 679 int res, retry; 680 struct sas_task *task = NULL; 681 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 682 struct pm8001_device *pm8001_dev = dev->lldd_dev; 683 DECLARE_COMPLETION_ONSTACK(completion_setstate); 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, 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 if (pm8001_ha->chip_id != chip_8001) { 710 pm8001_dev->setds_completion = &completion_setstate; 711 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, 712 pm8001_dev, 0x01); 713 wait_for_completion(&completion_setstate); 714 } 715 res = -TMF_RESP_FUNC_FAILED; 716 /* Even TMF timed out, return direct. */ 717 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 718 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 719 PM8001_FAIL_DBG(pm8001_ha, 720 pm8001_printk("TMF task[%x]timeout.\n", 721 tmf->tmf)); 722 goto ex_err; 723 } 724 } 725 726 if (task->task_status.resp == SAS_TASK_COMPLETE && 727 task->task_status.stat == SAM_STAT_GOOD) { 728 res = TMF_RESP_FUNC_COMPLETE; 729 break; 730 } 731 732 if (task->task_status.resp == SAS_TASK_COMPLETE && 733 task->task_status.stat == SAS_DATA_UNDERRUN) { 734 /* no error, but return the number of bytes of 735 * underrun */ 736 res = task->task_status.residual; 737 break; 738 } 739 740 if (task->task_status.resp == SAS_TASK_COMPLETE && 741 task->task_status.stat == SAS_DATA_OVERRUN) { 742 PM8001_FAIL_DBG(pm8001_ha, 743 pm8001_printk("Blocked task error.\n")); 744 res = -EMSGSIZE; 745 break; 746 } else { 747 PM8001_EH_DBG(pm8001_ha, 748 pm8001_printk(" Task to dev %016llx response:" 749 "0x%x status 0x%x\n", 750 SAS_ADDR(dev->sas_addr), 751 task->task_status.resp, 752 task->task_status.stat)); 753 sas_free_task(task); 754 task = NULL; 755 } 756 } 757 ex_err: 758 BUG_ON(retry == 3 && task != NULL); 759 sas_free_task(task); 760 return res; 761 } 762 763 static int 764 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, 765 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, 766 u32 task_tag) 767 { 768 int res, retry; 769 u32 ccb_tag; 770 struct pm8001_ccb_info *ccb; 771 struct sas_task *task = NULL; 772 773 for (retry = 0; retry < 3; retry++) { 774 task = sas_alloc_slow_task(GFP_KERNEL); 775 if (!task) 776 return -ENOMEM; 777 778 task->dev = dev; 779 task->task_proto = dev->tproto; 780 task->task_done = pm8001_task_done; 781 task->slow_task->timer.data = (unsigned long)task; 782 task->slow_task->timer.function = pm8001_tmf_timedout; 783 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; 784 add_timer(&task->slow_task->timer); 785 786 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); 787 if (res) 788 return res; 789 ccb = &pm8001_ha->ccb_info[ccb_tag]; 790 ccb->device = pm8001_dev; 791 ccb->ccb_tag = ccb_tag; 792 ccb->task = task; 793 794 res = PM8001_CHIP_DISP->task_abort(pm8001_ha, 795 pm8001_dev, flag, task_tag, ccb_tag); 796 797 if (res) { 798 del_timer(&task->slow_task->timer); 799 PM8001_FAIL_DBG(pm8001_ha, 800 pm8001_printk("Executing internal task " 801 "failed\n")); 802 goto ex_err; 803 } 804 wait_for_completion(&task->slow_task->completion); 805 res = TMF_RESP_FUNC_FAILED; 806 /* Even TMF timed out, return direct. */ 807 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 808 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 809 PM8001_FAIL_DBG(pm8001_ha, 810 pm8001_printk("TMF task timeout.\n")); 811 goto ex_err; 812 } 813 } 814 815 if (task->task_status.resp == SAS_TASK_COMPLETE && 816 task->task_status.stat == SAM_STAT_GOOD) { 817 res = TMF_RESP_FUNC_COMPLETE; 818 break; 819 820 } else { 821 PM8001_EH_DBG(pm8001_ha, 822 pm8001_printk(" Task to dev %016llx response: " 823 "0x%x status 0x%x\n", 824 SAS_ADDR(dev->sas_addr), 825 task->task_status.resp, 826 task->task_status.stat)); 827 sas_free_task(task); 828 task = NULL; 829 } 830 } 831 ex_err: 832 BUG_ON(retry == 3 && task != NULL); 833 sas_free_task(task); 834 return res; 835 } 836 837 /** 838 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify" 839 * @dev: the device structure which sas layer used. 840 */ 841 static void pm8001_dev_gone_notify(struct domain_device *dev) 842 { 843 unsigned long flags = 0; 844 struct pm8001_hba_info *pm8001_ha; 845 struct pm8001_device *pm8001_dev = dev->lldd_dev; 846 847 pm8001_ha = pm8001_find_ha_by_dev(dev); 848 spin_lock_irqsave(&pm8001_ha->lock, flags); 849 if (pm8001_dev) { 850 u32 device_id = pm8001_dev->device_id; 851 852 PM8001_DISC_DBG(pm8001_ha, 853 pm8001_printk("found dev[%d:%x] is gone.\n", 854 pm8001_dev->device_id, pm8001_dev->dev_type)); 855 if (pm8001_dev->running_req) { 856 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 857 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 858 dev, 1, 0); 859 spin_lock_irqsave(&pm8001_ha->lock, flags); 860 } 861 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id); 862 pm8001_free_dev(pm8001_dev); 863 } else { 864 PM8001_DISC_DBG(pm8001_ha, 865 pm8001_printk("Found dev has gone.\n")); 866 } 867 dev->lldd_dev = NULL; 868 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 869 } 870 871 void pm8001_dev_gone(struct domain_device *dev) 872 { 873 pm8001_dev_gone_notify(dev); 874 } 875 876 static int pm8001_issue_ssp_tmf(struct domain_device *dev, 877 u8 *lun, struct pm8001_tmf_task *tmf) 878 { 879 struct sas_ssp_task ssp_task; 880 if (!(dev->tproto & SAS_PROTOCOL_SSP)) 881 return TMF_RESP_FUNC_ESUPP; 882 883 strncpy((u8 *)&ssp_task.LUN, lun, 8); 884 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), 885 tmf); 886 } 887 888 /* retry commands by ha, by task and/or by device */ 889 void pm8001_open_reject_retry( 890 struct pm8001_hba_info *pm8001_ha, 891 struct sas_task *task_to_close, 892 struct pm8001_device *device_to_close) 893 { 894 int i; 895 unsigned long flags; 896 897 if (pm8001_ha == NULL) 898 return; 899 900 spin_lock_irqsave(&pm8001_ha->lock, flags); 901 902 for (i = 0; i < PM8001_MAX_CCB; i++) { 903 struct sas_task *task; 904 struct task_status_struct *ts; 905 struct pm8001_device *pm8001_dev; 906 unsigned long flags1; 907 u32 tag; 908 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i]; 909 910 pm8001_dev = ccb->device; 911 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)) 912 continue; 913 if (!device_to_close) { 914 uintptr_t d = (uintptr_t)pm8001_dev 915 - (uintptr_t)&pm8001_ha->devices; 916 if (((d % sizeof(*pm8001_dev)) != 0) 917 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES)) 918 continue; 919 } else if (pm8001_dev != device_to_close) 920 continue; 921 tag = ccb->ccb_tag; 922 if (!tag || (tag == 0xFFFFFFFF)) 923 continue; 924 task = ccb->task; 925 if (!task || !task->task_done) 926 continue; 927 if (task_to_close && (task != task_to_close)) 928 continue; 929 ts = &task->task_status; 930 ts->resp = SAS_TASK_COMPLETE; 931 /* Force the midlayer to retry */ 932 ts->stat = SAS_OPEN_REJECT; 933 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; 934 if (pm8001_dev) 935 pm8001_dev->running_req--; 936 spin_lock_irqsave(&task->task_state_lock, flags1); 937 task->task_state_flags &= ~SAS_TASK_STATE_PENDING; 938 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; 939 task->task_state_flags |= SAS_TASK_STATE_DONE; 940 if (unlikely((task->task_state_flags 941 & SAS_TASK_STATE_ABORTED))) { 942 spin_unlock_irqrestore(&task->task_state_lock, 943 flags1); 944 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); 945 } else { 946 spin_unlock_irqrestore(&task->task_state_lock, 947 flags1); 948 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); 949 mb();/* in order to force CPU ordering */ 950 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 951 task->task_done(task); 952 spin_lock_irqsave(&pm8001_ha->lock, flags); 953 } 954 } 955 956 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 957 } 958 959 /** 960 * Standard mandates link reset for ATA (type 0) and hard reset for 961 * SSP (type 1) , only for RECOVERY 962 */ 963 int pm8001_I_T_nexus_reset(struct domain_device *dev) 964 { 965 int rc = TMF_RESP_FUNC_FAILED; 966 struct pm8001_device *pm8001_dev; 967 struct pm8001_hba_info *pm8001_ha; 968 struct sas_phy *phy; 969 970 if (!dev || !dev->lldd_dev) 971 return -ENODEV; 972 973 pm8001_dev = dev->lldd_dev; 974 pm8001_ha = pm8001_find_ha_by_dev(dev); 975 phy = sas_get_local_phy(dev); 976 977 if (dev_is_sata(dev)) { 978 DECLARE_COMPLETION_ONSTACK(completion_setstate); 979 if (scsi_is_sas_phy_local(phy)) { 980 rc = 0; 981 goto out; 982 } 983 rc = sas_phy_reset(phy, 1); 984 msleep(2000); 985 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 986 dev, 1, 0); 987 pm8001_dev->setds_completion = &completion_setstate; 988 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, 989 pm8001_dev, 0x01); 990 wait_for_completion(&completion_setstate); 991 } else { 992 rc = sas_phy_reset(phy, 1); 993 msleep(2000); 994 } 995 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", 996 pm8001_dev->device_id, rc)); 997 out: 998 sas_put_local_phy(phy); 999 return rc; 1000 } 1001 1002 /* 1003 * This function handle the IT_NEXUS_XXX event or completion 1004 * status code for SSP/SATA/SMP I/O request. 1005 */ 1006 int pm8001_I_T_nexus_event_handler(struct domain_device *dev) 1007 { 1008 int rc = TMF_RESP_FUNC_FAILED; 1009 struct pm8001_device *pm8001_dev; 1010 struct pm8001_hba_info *pm8001_ha; 1011 struct sas_phy *phy; 1012 u32 device_id = 0; 1013 1014 if (!dev || !dev->lldd_dev) 1015 return -1; 1016 1017 pm8001_dev = dev->lldd_dev; 1018 device_id = pm8001_dev->device_id; 1019 pm8001_ha = pm8001_find_ha_by_dev(dev); 1020 1021 PM8001_EH_DBG(pm8001_ha, 1022 pm8001_printk("I_T_Nexus handler invoked !!")); 1023 1024 phy = sas_get_local_phy(dev); 1025 1026 if (dev_is_sata(dev)) { 1027 DECLARE_COMPLETION_ONSTACK(completion_setstate); 1028 if (scsi_is_sas_phy_local(phy)) { 1029 rc = 0; 1030 goto out; 1031 } 1032 /* send internal ssp/sata/smp abort command to FW */ 1033 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1034 dev, 1, 0); 1035 msleep(100); 1036 1037 /* deregister the target device */ 1038 pm8001_dev_gone_notify(dev); 1039 msleep(200); 1040 1041 /*send phy reset to hard reset target */ 1042 rc = sas_phy_reset(phy, 1); 1043 msleep(2000); 1044 pm8001_dev->setds_completion = &completion_setstate; 1045 1046 wait_for_completion(&completion_setstate); 1047 } else { 1048 /* send internal ssp/sata/smp abort command to FW */ 1049 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1050 dev, 1, 0); 1051 msleep(100); 1052 1053 /* deregister the target device */ 1054 pm8001_dev_gone_notify(dev); 1055 msleep(200); 1056 1057 /*send phy reset to hard reset target */ 1058 rc = sas_phy_reset(phy, 1); 1059 msleep(2000); 1060 } 1061 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", 1062 pm8001_dev->device_id, rc)); 1063 out: 1064 sas_put_local_phy(phy); 1065 1066 return rc; 1067 } 1068 /* mandatory SAM-3, the task reset the specified LUN*/ 1069 int pm8001_lu_reset(struct domain_device *dev, u8 *lun) 1070 { 1071 int rc = TMF_RESP_FUNC_FAILED; 1072 struct pm8001_tmf_task tmf_task; 1073 struct pm8001_device *pm8001_dev = dev->lldd_dev; 1074 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 1075 DECLARE_COMPLETION_ONSTACK(completion_setstate); 1076 if (dev_is_sata(dev)) { 1077 struct sas_phy *phy = sas_get_local_phy(dev); 1078 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1079 dev, 1, 0); 1080 rc = sas_phy_reset(phy, 1); 1081 sas_put_local_phy(phy); 1082 pm8001_dev->setds_completion = &completion_setstate; 1083 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, 1084 pm8001_dev, 0x01); 1085 wait_for_completion(&completion_setstate); 1086 } else { 1087 tmf_task.tmf = TMF_LU_RESET; 1088 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1089 } 1090 /* If failed, fall-through I_T_Nexus reset */ 1091 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n", 1092 pm8001_dev->device_id, rc)); 1093 return rc; 1094 } 1095 1096 /* optional SAM-3 */ 1097 int pm8001_query_task(struct sas_task *task) 1098 { 1099 u32 tag = 0xdeadbeef; 1100 int i = 0; 1101 struct scsi_lun lun; 1102 struct pm8001_tmf_task tmf_task; 1103 int rc = TMF_RESP_FUNC_FAILED; 1104 if (unlikely(!task || !task->lldd_task || !task->dev)) 1105 return rc; 1106 1107 if (task->task_proto & SAS_PROTOCOL_SSP) { 1108 struct scsi_cmnd *cmnd = task->uldd_task; 1109 struct domain_device *dev = task->dev; 1110 struct pm8001_hba_info *pm8001_ha = 1111 pm8001_find_ha_by_dev(dev); 1112 1113 int_to_scsilun(cmnd->device->lun, &lun); 1114 rc = pm8001_find_tag(task, &tag); 1115 if (rc == 0) { 1116 rc = TMF_RESP_FUNC_FAILED; 1117 return rc; 1118 } 1119 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:[")); 1120 for (i = 0; i < 16; i++) 1121 printk(KERN_INFO "%02x ", cmnd->cmnd[i]); 1122 printk(KERN_INFO "]\n"); 1123 tmf_task.tmf = TMF_QUERY_TASK; 1124 tmf_task.tag_of_task_to_be_managed = tag; 1125 1126 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1127 switch (rc) { 1128 /* The task is still in Lun, release it then */ 1129 case TMF_RESP_FUNC_SUCC: 1130 PM8001_EH_DBG(pm8001_ha, 1131 pm8001_printk("The task is still in Lun\n")); 1132 break; 1133 /* The task is not in Lun or failed, reset the phy */ 1134 case TMF_RESP_FUNC_FAILED: 1135 case TMF_RESP_FUNC_COMPLETE: 1136 PM8001_EH_DBG(pm8001_ha, 1137 pm8001_printk("The task is not in Lun or failed," 1138 " reset the phy\n")); 1139 break; 1140 } 1141 } 1142 pm8001_printk(":rc= %d\n", rc); 1143 return rc; 1144 } 1145 1146 /* mandatory SAM-3, still need free task/ccb info, abord the specified task */ 1147 int pm8001_abort_task(struct sas_task *task) 1148 { 1149 unsigned long flags; 1150 u32 tag = 0xdeadbeef; 1151 u32 device_id; 1152 struct domain_device *dev ; 1153 struct pm8001_hba_info *pm8001_ha = NULL; 1154 struct pm8001_ccb_info *ccb; 1155 struct scsi_lun lun; 1156 struct pm8001_device *pm8001_dev; 1157 struct pm8001_tmf_task tmf_task; 1158 int rc = TMF_RESP_FUNC_FAILED; 1159 if (unlikely(!task || !task->lldd_task || !task->dev)) 1160 return rc; 1161 spin_lock_irqsave(&task->task_state_lock, flags); 1162 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1163 spin_unlock_irqrestore(&task->task_state_lock, flags); 1164 rc = TMF_RESP_FUNC_COMPLETE; 1165 goto out; 1166 } 1167 spin_unlock_irqrestore(&task->task_state_lock, flags); 1168 if (task->task_proto & SAS_PROTOCOL_SSP) { 1169 struct scsi_cmnd *cmnd = task->uldd_task; 1170 dev = task->dev; 1171 ccb = task->lldd_task; 1172 pm8001_dev = dev->lldd_dev; 1173 pm8001_ha = pm8001_find_ha_by_dev(dev); 1174 int_to_scsilun(cmnd->device->lun, &lun); 1175 rc = pm8001_find_tag(task, &tag); 1176 if (rc == 0) { 1177 printk(KERN_INFO "No such tag in %s\n", __func__); 1178 rc = TMF_RESP_FUNC_FAILED; 1179 return rc; 1180 } 1181 device_id = pm8001_dev->device_id; 1182 PM8001_EH_DBG(pm8001_ha, 1183 pm8001_printk("abort io to deviceid= %d\n", device_id)); 1184 tmf_task.tmf = TMF_ABORT_TASK; 1185 tmf_task.tag_of_task_to_be_managed = tag; 1186 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1187 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1188 pm8001_dev->sas_device, 0, tag); 1189 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1190 task->task_proto & SAS_PROTOCOL_STP) { 1191 dev = task->dev; 1192 pm8001_dev = dev->lldd_dev; 1193 pm8001_ha = pm8001_find_ha_by_dev(dev); 1194 rc = pm8001_find_tag(task, &tag); 1195 if (rc == 0) { 1196 printk(KERN_INFO "No such tag in %s\n", __func__); 1197 rc = TMF_RESP_FUNC_FAILED; 1198 return rc; 1199 } 1200 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1201 pm8001_dev->sas_device, 0, tag); 1202 } else if (task->task_proto & SAS_PROTOCOL_SMP) { 1203 /* SMP */ 1204 dev = task->dev; 1205 pm8001_dev = dev->lldd_dev; 1206 pm8001_ha = pm8001_find_ha_by_dev(dev); 1207 rc = pm8001_find_tag(task, &tag); 1208 if (rc == 0) { 1209 printk(KERN_INFO "No such tag in %s\n", __func__); 1210 rc = TMF_RESP_FUNC_FAILED; 1211 return rc; 1212 } 1213 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1214 pm8001_dev->sas_device, 0, tag); 1215 1216 } 1217 out: 1218 if (rc != TMF_RESP_FUNC_COMPLETE) 1219 pm8001_printk("rc= %d\n", rc); 1220 return rc; 1221 } 1222 1223 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) 1224 { 1225 int rc = TMF_RESP_FUNC_FAILED; 1226 struct pm8001_tmf_task tmf_task; 1227 1228 tmf_task.tmf = TMF_ABORT_TASK_SET; 1229 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1230 return rc; 1231 } 1232 1233 int pm8001_clear_aca(struct domain_device *dev, u8 *lun) 1234 { 1235 int rc = TMF_RESP_FUNC_FAILED; 1236 struct pm8001_tmf_task tmf_task; 1237 1238 tmf_task.tmf = TMF_CLEAR_ACA; 1239 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1240 1241 return rc; 1242 } 1243 1244 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) 1245 { 1246 int rc = TMF_RESP_FUNC_FAILED; 1247 struct pm8001_tmf_task tmf_task; 1248 struct pm8001_device *pm8001_dev = dev->lldd_dev; 1249 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 1250 1251 PM8001_EH_DBG(pm8001_ha, 1252 pm8001_printk("I_T_L_Q clear task set[%x]\n", 1253 pm8001_dev->device_id)); 1254 tmf_task.tmf = TMF_CLEAR_TASK_SET; 1255 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1256 return rc; 1257 } 1258 1259