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 qc->tf.command == ATA_CMD_FPDMA_RECV || 285 qc->tf.command == ATA_CMD_FPDMA_SEND || 286 qc->tf.command == ATA_CMD_NCQ_NON_DATA) { 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 == SAS_PHY_UNUSED))) 356 static int pm8001_task_exec(struct sas_task *task, 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 unsigned long flags = 0; 367 368 if (!dev->port) { 369 struct task_status_struct *tsm = &t->task_status; 370 tsm->resp = SAS_TASK_UNDELIVERED; 371 tsm->stat = SAS_PHY_DOWN; 372 if (dev->dev_type != SAS_SATA_DEV) 373 t->task_done(t); 374 return 0; 375 } 376 pm8001_ha = pm8001_find_ha_by_dev(task->dev); 377 PM8001_IO_DBG(pm8001_ha, pm8001_printk("pm8001_task_exec device \n ")); 378 spin_lock_irqsave(&pm8001_ha->lock, flags); 379 do { 380 dev = t->dev; 381 pm8001_dev = dev->lldd_dev; 382 port = &pm8001_ha->port[sas_find_local_port_id(dev)]; 383 if (DEV_IS_GONE(pm8001_dev) || !port->port_attached) { 384 if (sas_protocol_ata(t->task_proto)) { 385 struct task_status_struct *ts = &t->task_status; 386 ts->resp = SAS_TASK_UNDELIVERED; 387 ts->stat = SAS_PHY_DOWN; 388 389 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 390 t->task_done(t); 391 spin_lock_irqsave(&pm8001_ha->lock, flags); 392 continue; 393 } else { 394 struct task_status_struct *ts = &t->task_status; 395 ts->resp = SAS_TASK_UNDELIVERED; 396 ts->stat = SAS_PHY_DOWN; 397 t->task_done(t); 398 continue; 399 } 400 } 401 rc = pm8001_tag_alloc(pm8001_ha, &tag); 402 if (rc) 403 goto err_out; 404 ccb = &pm8001_ha->ccb_info[tag]; 405 406 if (!sas_protocol_ata(t->task_proto)) { 407 if (t->num_scatter) { 408 n_elem = dma_map_sg(pm8001_ha->dev, 409 t->scatter, 410 t->num_scatter, 411 t->data_dir); 412 if (!n_elem) { 413 rc = -ENOMEM; 414 goto err_out_tag; 415 } 416 } 417 } else { 418 n_elem = t->num_scatter; 419 } 420 421 t->lldd_task = ccb; 422 ccb->n_elem = n_elem; 423 ccb->ccb_tag = tag; 424 ccb->task = t; 425 ccb->device = pm8001_dev; 426 switch (t->task_proto) { 427 case SAS_PROTOCOL_SMP: 428 rc = pm8001_task_prep_smp(pm8001_ha, ccb); 429 break; 430 case SAS_PROTOCOL_SSP: 431 if (is_tmf) 432 rc = pm8001_task_prep_ssp_tm(pm8001_ha, 433 ccb, tmf); 434 else 435 rc = pm8001_task_prep_ssp(pm8001_ha, ccb); 436 break; 437 case SAS_PROTOCOL_SATA: 438 case SAS_PROTOCOL_STP: 439 rc = pm8001_task_prep_ata(pm8001_ha, ccb); 440 break; 441 default: 442 dev_printk(KERN_ERR, pm8001_ha->dev, 443 "unknown sas_task proto: 0x%x\n", 444 t->task_proto); 445 rc = -EINVAL; 446 break; 447 } 448 449 if (rc) { 450 PM8001_IO_DBG(pm8001_ha, 451 pm8001_printk("rc is %x\n", rc)); 452 goto err_out_tag; 453 } 454 /* TODO: select normal or high priority */ 455 spin_lock(&t->task_state_lock); 456 t->task_state_flags |= SAS_TASK_AT_INITIATOR; 457 spin_unlock(&t->task_state_lock); 458 pm8001_dev->running_req++; 459 } while (0); 460 rc = 0; 461 goto out_done; 462 463 err_out_tag: 464 pm8001_tag_free(pm8001_ha, tag); 465 err_out: 466 dev_printk(KERN_ERR, pm8001_ha->dev, "pm8001 exec failed[%d]!\n", rc); 467 if (!sas_protocol_ata(t->task_proto)) 468 if (n_elem) 469 dma_unmap_sg(pm8001_ha->dev, t->scatter, n_elem, 470 t->data_dir); 471 out_done: 472 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 473 return rc; 474 } 475 476 /** 477 * pm8001_queue_command - register for upper layer used, all IO commands sent 478 * to HBA are from this interface. 479 * @task: the task to be execute. 480 * @gfp_flags: gfp_flags 481 */ 482 int pm8001_queue_command(struct sas_task *task, gfp_t gfp_flags) 483 { 484 return pm8001_task_exec(task, gfp_flags, 0, NULL); 485 } 486 487 /** 488 * pm8001_ccb_task_free - free the sg for ssp and smp command, free the ccb. 489 * @pm8001_ha: our hba card information 490 * @ccb: the ccb which attached to ssp task 491 * @task: the task to be free. 492 * @ccb_idx: ccb index. 493 */ 494 void pm8001_ccb_task_free(struct pm8001_hba_info *pm8001_ha, 495 struct sas_task *task, struct pm8001_ccb_info *ccb, u32 ccb_idx) 496 { 497 if (!ccb->task) 498 return; 499 if (!sas_protocol_ata(task->task_proto)) 500 if (ccb->n_elem) 501 dma_unmap_sg(pm8001_ha->dev, task->scatter, 502 task->num_scatter, task->data_dir); 503 504 switch (task->task_proto) { 505 case SAS_PROTOCOL_SMP: 506 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_resp, 1, 507 PCI_DMA_FROMDEVICE); 508 dma_unmap_sg(pm8001_ha->dev, &task->smp_task.smp_req, 1, 509 PCI_DMA_TODEVICE); 510 break; 511 512 case SAS_PROTOCOL_SATA: 513 case SAS_PROTOCOL_STP: 514 case SAS_PROTOCOL_SSP: 515 default: 516 /* do nothing */ 517 break; 518 } 519 task->lldd_task = NULL; 520 ccb->task = NULL; 521 ccb->ccb_tag = 0xFFFFFFFF; 522 ccb->open_retry = 0; 523 pm8001_tag_free(pm8001_ha, ccb_idx); 524 } 525 526 /** 527 * pm8001_alloc_dev - find a empty pm8001_device 528 * @pm8001_ha: our hba card information 529 */ 530 static struct pm8001_device *pm8001_alloc_dev(struct pm8001_hba_info *pm8001_ha) 531 { 532 u32 dev; 533 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { 534 if (pm8001_ha->devices[dev].dev_type == SAS_PHY_UNUSED) { 535 pm8001_ha->devices[dev].id = dev; 536 return &pm8001_ha->devices[dev]; 537 } 538 } 539 if (dev == PM8001_MAX_DEVICES) { 540 PM8001_FAIL_DBG(pm8001_ha, 541 pm8001_printk("max support %d devices, ignore ..\n", 542 PM8001_MAX_DEVICES)); 543 } 544 return NULL; 545 } 546 /** 547 * pm8001_find_dev - find a matching pm8001_device 548 * @pm8001_ha: our hba card information 549 */ 550 struct pm8001_device *pm8001_find_dev(struct pm8001_hba_info *pm8001_ha, 551 u32 device_id) 552 { 553 u32 dev; 554 for (dev = 0; dev < PM8001_MAX_DEVICES; dev++) { 555 if (pm8001_ha->devices[dev].device_id == device_id) 556 return &pm8001_ha->devices[dev]; 557 } 558 if (dev == PM8001_MAX_DEVICES) { 559 PM8001_FAIL_DBG(pm8001_ha, pm8001_printk("NO MATCHING " 560 "DEVICE FOUND !!!\n")); 561 } 562 return NULL; 563 } 564 565 static void pm8001_free_dev(struct pm8001_device *pm8001_dev) 566 { 567 u32 id = pm8001_dev->id; 568 memset(pm8001_dev, 0, sizeof(*pm8001_dev)); 569 pm8001_dev->id = id; 570 pm8001_dev->dev_type = SAS_PHY_UNUSED; 571 pm8001_dev->device_id = PM8001_MAX_DEVICES; 572 pm8001_dev->sas_device = NULL; 573 } 574 575 /** 576 * pm8001_dev_found_notify - libsas notify a device is found. 577 * @dev: the device structure which sas layer used. 578 * 579 * when libsas find a sas domain device, it should tell the LLDD that 580 * device is found, and then LLDD register this device to HBA firmware 581 * by the command "OPC_INB_REG_DEV", after that the HBA will assign a 582 * device ID(according to device's sas address) and returned it to LLDD. From 583 * now on, we communicate with HBA FW with the device ID which HBA assigned 584 * rather than sas address. it is the necessary step for our HBA but it is 585 * the optional for other HBA driver. 586 */ 587 static int pm8001_dev_found_notify(struct domain_device *dev) 588 { 589 unsigned long flags = 0; 590 int res = 0; 591 struct pm8001_hba_info *pm8001_ha = NULL; 592 struct domain_device *parent_dev = dev->parent; 593 struct pm8001_device *pm8001_device; 594 DECLARE_COMPLETION_ONSTACK(completion); 595 u32 flag = 0; 596 pm8001_ha = pm8001_find_ha_by_dev(dev); 597 spin_lock_irqsave(&pm8001_ha->lock, flags); 598 599 pm8001_device = pm8001_alloc_dev(pm8001_ha); 600 if (!pm8001_device) { 601 res = -1; 602 goto found_out; 603 } 604 pm8001_device->sas_device = dev; 605 dev->lldd_dev = pm8001_device; 606 pm8001_device->dev_type = dev->dev_type; 607 pm8001_device->dcompletion = &completion; 608 if (parent_dev && DEV_IS_EXPANDER(parent_dev->dev_type)) { 609 int phy_id; 610 struct ex_phy *phy; 611 for (phy_id = 0; phy_id < parent_dev->ex_dev.num_phys; 612 phy_id++) { 613 phy = &parent_dev->ex_dev.ex_phy[phy_id]; 614 if (SAS_ADDR(phy->attached_sas_addr) 615 == SAS_ADDR(dev->sas_addr)) { 616 pm8001_device->attached_phy = phy_id; 617 break; 618 } 619 } 620 if (phy_id == parent_dev->ex_dev.num_phys) { 621 PM8001_FAIL_DBG(pm8001_ha, 622 pm8001_printk("Error: no attached dev:%016llx" 623 " at ex:%016llx.\n", SAS_ADDR(dev->sas_addr), 624 SAS_ADDR(parent_dev->sas_addr))); 625 res = -1; 626 } 627 } else { 628 if (dev->dev_type == SAS_SATA_DEV) { 629 pm8001_device->attached_phy = 630 dev->rphy->identify.phy_identifier; 631 flag = 1; /* directly sata*/ 632 } 633 } /*register this device to HBA*/ 634 PM8001_DISC_DBG(pm8001_ha, pm8001_printk("Found device\n")); 635 PM8001_CHIP_DISP->reg_dev_req(pm8001_ha, pm8001_device, flag); 636 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 637 wait_for_completion(&completion); 638 if (dev->dev_type == SAS_END_DEVICE) 639 msleep(50); 640 pm8001_ha->flags = PM8001F_RUN_TIME; 641 return 0; 642 found_out: 643 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 644 return res; 645 } 646 647 int pm8001_dev_found(struct domain_device *dev) 648 { 649 return pm8001_dev_found_notify(dev); 650 } 651 652 void pm8001_task_done(struct sas_task *task) 653 { 654 if (!del_timer(&task->slow_task->timer)) 655 return; 656 complete(&task->slow_task->completion); 657 } 658 659 static void pm8001_tmf_timedout(unsigned long data) 660 { 661 struct sas_task *task = (struct sas_task *)data; 662 663 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 664 complete(&task->slow_task->completion); 665 } 666 667 #define PM8001_TASK_TIMEOUT 20 668 /** 669 * pm8001_exec_internal_tmf_task - execute some task management commands. 670 * @dev: the wanted device. 671 * @tmf: which task management wanted to be take. 672 * @para_len: para_len. 673 * @parameter: ssp task parameter. 674 * 675 * when errors or exception happened, we may want to do something, for example 676 * abort the issued task which result in this execption, it is done by calling 677 * this function, note it is also with the task execute interface. 678 */ 679 static int pm8001_exec_internal_tmf_task(struct domain_device *dev, 680 void *parameter, u32 para_len, struct pm8001_tmf_task *tmf) 681 { 682 int res, retry; 683 struct sas_task *task = NULL; 684 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 685 struct pm8001_device *pm8001_dev = dev->lldd_dev; 686 DECLARE_COMPLETION_ONSTACK(completion_setstate); 687 688 for (retry = 0; retry < 3; retry++) { 689 task = sas_alloc_slow_task(GFP_KERNEL); 690 if (!task) 691 return -ENOMEM; 692 693 task->dev = dev; 694 task->task_proto = dev->tproto; 695 memcpy(&task->ssp_task, parameter, para_len); 696 task->task_done = pm8001_task_done; 697 task->slow_task->timer.data = (unsigned long)task; 698 task->slow_task->timer.function = pm8001_tmf_timedout; 699 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT*HZ; 700 add_timer(&task->slow_task->timer); 701 702 res = pm8001_task_exec(task, GFP_KERNEL, 1, tmf); 703 704 if (res) { 705 del_timer(&task->slow_task->timer); 706 PM8001_FAIL_DBG(pm8001_ha, 707 pm8001_printk("Executing internal task " 708 "failed\n")); 709 goto ex_err; 710 } 711 wait_for_completion(&task->slow_task->completion); 712 if (pm8001_ha->chip_id != chip_8001) { 713 pm8001_dev->setds_completion = &completion_setstate; 714 PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, 715 pm8001_dev, 0x01); 716 wait_for_completion(&completion_setstate); 717 } 718 res = -TMF_RESP_FUNC_FAILED; 719 /* Even TMF timed out, return direct. */ 720 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 721 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 722 PM8001_FAIL_DBG(pm8001_ha, 723 pm8001_printk("TMF task[%x]timeout.\n", 724 tmf->tmf)); 725 goto ex_err; 726 } 727 } 728 729 if (task->task_status.resp == SAS_TASK_COMPLETE && 730 task->task_status.stat == SAM_STAT_GOOD) { 731 res = TMF_RESP_FUNC_COMPLETE; 732 break; 733 } 734 735 if (task->task_status.resp == SAS_TASK_COMPLETE && 736 task->task_status.stat == SAS_DATA_UNDERRUN) { 737 /* no error, but return the number of bytes of 738 * underrun */ 739 res = task->task_status.residual; 740 break; 741 } 742 743 if (task->task_status.resp == SAS_TASK_COMPLETE && 744 task->task_status.stat == SAS_DATA_OVERRUN) { 745 PM8001_FAIL_DBG(pm8001_ha, 746 pm8001_printk("Blocked task error.\n")); 747 res = -EMSGSIZE; 748 break; 749 } else { 750 PM8001_EH_DBG(pm8001_ha, 751 pm8001_printk(" Task to dev %016llx response:" 752 "0x%x status 0x%x\n", 753 SAS_ADDR(dev->sas_addr), 754 task->task_status.resp, 755 task->task_status.stat)); 756 sas_free_task(task); 757 task = NULL; 758 } 759 } 760 ex_err: 761 BUG_ON(retry == 3 && task != NULL); 762 sas_free_task(task); 763 return res; 764 } 765 766 static int 767 pm8001_exec_internal_task_abort(struct pm8001_hba_info *pm8001_ha, 768 struct pm8001_device *pm8001_dev, struct domain_device *dev, u32 flag, 769 u32 task_tag) 770 { 771 int res, retry; 772 u32 ccb_tag; 773 struct pm8001_ccb_info *ccb; 774 struct sas_task *task = NULL; 775 776 for (retry = 0; retry < 3; retry++) { 777 task = sas_alloc_slow_task(GFP_KERNEL); 778 if (!task) 779 return -ENOMEM; 780 781 task->dev = dev; 782 task->task_proto = dev->tproto; 783 task->task_done = pm8001_task_done; 784 task->slow_task->timer.data = (unsigned long)task; 785 task->slow_task->timer.function = pm8001_tmf_timedout; 786 task->slow_task->timer.expires = jiffies + PM8001_TASK_TIMEOUT * HZ; 787 add_timer(&task->slow_task->timer); 788 789 res = pm8001_tag_alloc(pm8001_ha, &ccb_tag); 790 if (res) 791 return res; 792 ccb = &pm8001_ha->ccb_info[ccb_tag]; 793 ccb->device = pm8001_dev; 794 ccb->ccb_tag = ccb_tag; 795 ccb->task = task; 796 ccb->n_elem = 0; 797 798 res = PM8001_CHIP_DISP->task_abort(pm8001_ha, 799 pm8001_dev, flag, task_tag, ccb_tag); 800 801 if (res) { 802 del_timer(&task->slow_task->timer); 803 PM8001_FAIL_DBG(pm8001_ha, 804 pm8001_printk("Executing internal task " 805 "failed\n")); 806 goto ex_err; 807 } 808 wait_for_completion(&task->slow_task->completion); 809 res = TMF_RESP_FUNC_FAILED; 810 /* Even TMF timed out, return direct. */ 811 if ((task->task_state_flags & SAS_TASK_STATE_ABORTED)) { 812 if (!(task->task_state_flags & SAS_TASK_STATE_DONE)) { 813 PM8001_FAIL_DBG(pm8001_ha, 814 pm8001_printk("TMF task timeout.\n")); 815 goto ex_err; 816 } 817 } 818 819 if (task->task_status.resp == SAS_TASK_COMPLETE && 820 task->task_status.stat == SAM_STAT_GOOD) { 821 res = TMF_RESP_FUNC_COMPLETE; 822 break; 823 824 } else { 825 PM8001_EH_DBG(pm8001_ha, 826 pm8001_printk(" Task to dev %016llx response: " 827 "0x%x status 0x%x\n", 828 SAS_ADDR(dev->sas_addr), 829 task->task_status.resp, 830 task->task_status.stat)); 831 sas_free_task(task); 832 task = NULL; 833 } 834 } 835 ex_err: 836 BUG_ON(retry == 3 && task != NULL); 837 sas_free_task(task); 838 return res; 839 } 840 841 /** 842 * pm8001_dev_gone_notify - see the comments for "pm8001_dev_found_notify" 843 * @dev: the device structure which sas layer used. 844 */ 845 static void pm8001_dev_gone_notify(struct domain_device *dev) 846 { 847 unsigned long flags = 0; 848 struct pm8001_hba_info *pm8001_ha; 849 struct pm8001_device *pm8001_dev = dev->lldd_dev; 850 851 pm8001_ha = pm8001_find_ha_by_dev(dev); 852 spin_lock_irqsave(&pm8001_ha->lock, flags); 853 if (pm8001_dev) { 854 u32 device_id = pm8001_dev->device_id; 855 856 PM8001_DISC_DBG(pm8001_ha, 857 pm8001_printk("found dev[%d:%x] is gone.\n", 858 pm8001_dev->device_id, pm8001_dev->dev_type)); 859 if (pm8001_dev->running_req) { 860 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 861 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 862 dev, 1, 0); 863 spin_lock_irqsave(&pm8001_ha->lock, flags); 864 } 865 PM8001_CHIP_DISP->dereg_dev_req(pm8001_ha, device_id); 866 pm8001_free_dev(pm8001_dev); 867 } else { 868 PM8001_DISC_DBG(pm8001_ha, 869 pm8001_printk("Found dev has gone.\n")); 870 } 871 dev->lldd_dev = NULL; 872 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 873 } 874 875 void pm8001_dev_gone(struct domain_device *dev) 876 { 877 pm8001_dev_gone_notify(dev); 878 } 879 880 static int pm8001_issue_ssp_tmf(struct domain_device *dev, 881 u8 *lun, struct pm8001_tmf_task *tmf) 882 { 883 struct sas_ssp_task ssp_task; 884 if (!(dev->tproto & SAS_PROTOCOL_SSP)) 885 return TMF_RESP_FUNC_ESUPP; 886 887 strncpy((u8 *)&ssp_task.LUN, lun, 8); 888 return pm8001_exec_internal_tmf_task(dev, &ssp_task, sizeof(ssp_task), 889 tmf); 890 } 891 892 /* retry commands by ha, by task and/or by device */ 893 void pm8001_open_reject_retry( 894 struct pm8001_hba_info *pm8001_ha, 895 struct sas_task *task_to_close, 896 struct pm8001_device *device_to_close) 897 { 898 int i; 899 unsigned long flags; 900 901 if (pm8001_ha == NULL) 902 return; 903 904 spin_lock_irqsave(&pm8001_ha->lock, flags); 905 906 for (i = 0; i < PM8001_MAX_CCB; i++) { 907 struct sas_task *task; 908 struct task_status_struct *ts; 909 struct pm8001_device *pm8001_dev; 910 unsigned long flags1; 911 u32 tag; 912 struct pm8001_ccb_info *ccb = &pm8001_ha->ccb_info[i]; 913 914 pm8001_dev = ccb->device; 915 if (!pm8001_dev || (pm8001_dev->dev_type == SAS_PHY_UNUSED)) 916 continue; 917 if (!device_to_close) { 918 uintptr_t d = (uintptr_t)pm8001_dev 919 - (uintptr_t)&pm8001_ha->devices; 920 if (((d % sizeof(*pm8001_dev)) != 0) 921 || ((d / sizeof(*pm8001_dev)) >= PM8001_MAX_DEVICES)) 922 continue; 923 } else if (pm8001_dev != device_to_close) 924 continue; 925 tag = ccb->ccb_tag; 926 if (!tag || (tag == 0xFFFFFFFF)) 927 continue; 928 task = ccb->task; 929 if (!task || !task->task_done) 930 continue; 931 if (task_to_close && (task != task_to_close)) 932 continue; 933 ts = &task->task_status; 934 ts->resp = SAS_TASK_COMPLETE; 935 /* Force the midlayer to retry */ 936 ts->stat = SAS_OPEN_REJECT; 937 ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; 938 if (pm8001_dev) 939 pm8001_dev->running_req--; 940 spin_lock_irqsave(&task->task_state_lock, flags1); 941 task->task_state_flags &= ~SAS_TASK_STATE_PENDING; 942 task->task_state_flags &= ~SAS_TASK_AT_INITIATOR; 943 task->task_state_flags |= SAS_TASK_STATE_DONE; 944 if (unlikely((task->task_state_flags 945 & SAS_TASK_STATE_ABORTED))) { 946 spin_unlock_irqrestore(&task->task_state_lock, 947 flags1); 948 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); 949 } else { 950 spin_unlock_irqrestore(&task->task_state_lock, 951 flags1); 952 pm8001_ccb_task_free(pm8001_ha, task, ccb, tag); 953 mb();/* in order to force CPU ordering */ 954 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 955 task->task_done(task); 956 spin_lock_irqsave(&pm8001_ha->lock, flags); 957 } 958 } 959 960 spin_unlock_irqrestore(&pm8001_ha->lock, flags); 961 } 962 963 /** 964 * Standard mandates link reset for ATA (type 0) and hard reset for 965 * SSP (type 1) , only for RECOVERY 966 */ 967 int pm8001_I_T_nexus_reset(struct domain_device *dev) 968 { 969 int rc = TMF_RESP_FUNC_FAILED; 970 struct pm8001_device *pm8001_dev; 971 struct pm8001_hba_info *pm8001_ha; 972 struct sas_phy *phy; 973 974 if (!dev || !dev->lldd_dev) 975 return -ENODEV; 976 977 pm8001_dev = dev->lldd_dev; 978 pm8001_ha = pm8001_find_ha_by_dev(dev); 979 phy = sas_get_local_phy(dev); 980 981 if (dev_is_sata(dev)) { 982 if (scsi_is_sas_phy_local(phy)) { 983 rc = 0; 984 goto out; 985 } 986 rc = sas_phy_reset(phy, 1); 987 if (rc) { 988 PM8001_EH_DBG(pm8001_ha, 989 pm8001_printk("phy reset failed for device %x\n" 990 "with rc %d\n", pm8001_dev->device_id, rc)); 991 rc = TMF_RESP_FUNC_FAILED; 992 goto out; 993 } 994 msleep(2000); 995 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 996 dev, 1, 0); 997 if (rc) { 998 PM8001_EH_DBG(pm8001_ha, 999 pm8001_printk("task abort failed %x\n" 1000 "with rc %d\n", pm8001_dev->device_id, rc)); 1001 rc = TMF_RESP_FUNC_FAILED; 1002 } 1003 } else { 1004 rc = sas_phy_reset(phy, 1); 1005 msleep(2000); 1006 } 1007 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", 1008 pm8001_dev->device_id, rc)); 1009 out: 1010 sas_put_local_phy(phy); 1011 return rc; 1012 } 1013 1014 /* 1015 * This function handle the IT_NEXUS_XXX event or completion 1016 * status code for SSP/SATA/SMP I/O request. 1017 */ 1018 int pm8001_I_T_nexus_event_handler(struct domain_device *dev) 1019 { 1020 int rc = TMF_RESP_FUNC_FAILED; 1021 struct pm8001_device *pm8001_dev; 1022 struct pm8001_hba_info *pm8001_ha; 1023 struct sas_phy *phy; 1024 u32 device_id = 0; 1025 1026 if (!dev || !dev->lldd_dev) 1027 return -1; 1028 1029 pm8001_dev = dev->lldd_dev; 1030 device_id = pm8001_dev->device_id; 1031 pm8001_ha = pm8001_find_ha_by_dev(dev); 1032 1033 PM8001_EH_DBG(pm8001_ha, 1034 pm8001_printk("I_T_Nexus handler invoked !!")); 1035 1036 phy = sas_get_local_phy(dev); 1037 1038 if (dev_is_sata(dev)) { 1039 DECLARE_COMPLETION_ONSTACK(completion_setstate); 1040 if (scsi_is_sas_phy_local(phy)) { 1041 rc = 0; 1042 goto out; 1043 } 1044 /* send internal ssp/sata/smp abort command to FW */ 1045 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1046 dev, 1, 0); 1047 msleep(100); 1048 1049 /* deregister the target device */ 1050 pm8001_dev_gone_notify(dev); 1051 msleep(200); 1052 1053 /*send phy reset to hard reset target */ 1054 rc = sas_phy_reset(phy, 1); 1055 msleep(2000); 1056 pm8001_dev->setds_completion = &completion_setstate; 1057 1058 wait_for_completion(&completion_setstate); 1059 } else { 1060 /* send internal ssp/sata/smp abort command to FW */ 1061 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1062 dev, 1, 0); 1063 msleep(100); 1064 1065 /* deregister the target device */ 1066 pm8001_dev_gone_notify(dev); 1067 msleep(200); 1068 1069 /*send phy reset to hard reset target */ 1070 rc = sas_phy_reset(phy, 1); 1071 msleep(2000); 1072 } 1073 PM8001_EH_DBG(pm8001_ha, pm8001_printk(" for device[%x]:rc=%d\n", 1074 pm8001_dev->device_id, rc)); 1075 out: 1076 sas_put_local_phy(phy); 1077 1078 return rc; 1079 } 1080 /* mandatory SAM-3, the task reset the specified LUN*/ 1081 int pm8001_lu_reset(struct domain_device *dev, u8 *lun) 1082 { 1083 int rc = TMF_RESP_FUNC_FAILED; 1084 struct pm8001_tmf_task tmf_task; 1085 struct pm8001_device *pm8001_dev = dev->lldd_dev; 1086 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 1087 DECLARE_COMPLETION_ONSTACK(completion_setstate); 1088 if (dev_is_sata(dev)) { 1089 struct sas_phy *phy = sas_get_local_phy(dev); 1090 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev , 1091 dev, 1, 0); 1092 rc = sas_phy_reset(phy, 1); 1093 sas_put_local_phy(phy); 1094 pm8001_dev->setds_completion = &completion_setstate; 1095 rc = PM8001_CHIP_DISP->set_dev_state_req(pm8001_ha, 1096 pm8001_dev, 0x01); 1097 wait_for_completion(&completion_setstate); 1098 } else { 1099 tmf_task.tmf = TMF_LU_RESET; 1100 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1101 } 1102 /* If failed, fall-through I_T_Nexus reset */ 1103 PM8001_EH_DBG(pm8001_ha, pm8001_printk("for device[%x]:rc=%d\n", 1104 pm8001_dev->device_id, rc)); 1105 return rc; 1106 } 1107 1108 /* optional SAM-3 */ 1109 int pm8001_query_task(struct sas_task *task) 1110 { 1111 u32 tag = 0xdeadbeef; 1112 int i = 0; 1113 struct scsi_lun lun; 1114 struct pm8001_tmf_task tmf_task; 1115 int rc = TMF_RESP_FUNC_FAILED; 1116 if (unlikely(!task || !task->lldd_task || !task->dev)) 1117 return rc; 1118 1119 if (task->task_proto & SAS_PROTOCOL_SSP) { 1120 struct scsi_cmnd *cmnd = task->uldd_task; 1121 struct domain_device *dev = task->dev; 1122 struct pm8001_hba_info *pm8001_ha = 1123 pm8001_find_ha_by_dev(dev); 1124 1125 int_to_scsilun(cmnd->device->lun, &lun); 1126 rc = pm8001_find_tag(task, &tag); 1127 if (rc == 0) { 1128 rc = TMF_RESP_FUNC_FAILED; 1129 return rc; 1130 } 1131 PM8001_EH_DBG(pm8001_ha, pm8001_printk("Query:[")); 1132 for (i = 0; i < 16; i++) 1133 printk(KERN_INFO "%02x ", cmnd->cmnd[i]); 1134 printk(KERN_INFO "]\n"); 1135 tmf_task.tmf = TMF_QUERY_TASK; 1136 tmf_task.tag_of_task_to_be_managed = tag; 1137 1138 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1139 switch (rc) { 1140 /* The task is still in Lun, release it then */ 1141 case TMF_RESP_FUNC_SUCC: 1142 PM8001_EH_DBG(pm8001_ha, 1143 pm8001_printk("The task is still in Lun\n")); 1144 break; 1145 /* The task is not in Lun or failed, reset the phy */ 1146 case TMF_RESP_FUNC_FAILED: 1147 case TMF_RESP_FUNC_COMPLETE: 1148 PM8001_EH_DBG(pm8001_ha, 1149 pm8001_printk("The task is not in Lun or failed," 1150 " reset the phy\n")); 1151 break; 1152 } 1153 } 1154 pm8001_printk(":rc= %d\n", rc); 1155 return rc; 1156 } 1157 1158 /* mandatory SAM-3, still need free task/ccb info, abord the specified task */ 1159 int pm8001_abort_task(struct sas_task *task) 1160 { 1161 unsigned long flags; 1162 u32 tag = 0xdeadbeef; 1163 u32 device_id; 1164 struct domain_device *dev ; 1165 struct pm8001_hba_info *pm8001_ha = NULL; 1166 struct pm8001_ccb_info *ccb; 1167 struct scsi_lun lun; 1168 struct pm8001_device *pm8001_dev; 1169 struct pm8001_tmf_task tmf_task; 1170 int rc = TMF_RESP_FUNC_FAILED; 1171 if (unlikely(!task || !task->lldd_task || !task->dev)) 1172 return rc; 1173 spin_lock_irqsave(&task->task_state_lock, flags); 1174 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1175 spin_unlock_irqrestore(&task->task_state_lock, flags); 1176 rc = TMF_RESP_FUNC_COMPLETE; 1177 goto out; 1178 } 1179 spin_unlock_irqrestore(&task->task_state_lock, flags); 1180 if (task->task_proto & SAS_PROTOCOL_SSP) { 1181 struct scsi_cmnd *cmnd = task->uldd_task; 1182 dev = task->dev; 1183 ccb = task->lldd_task; 1184 pm8001_dev = dev->lldd_dev; 1185 pm8001_ha = pm8001_find_ha_by_dev(dev); 1186 int_to_scsilun(cmnd->device->lun, &lun); 1187 rc = pm8001_find_tag(task, &tag); 1188 if (rc == 0) { 1189 printk(KERN_INFO "No such tag in %s\n", __func__); 1190 rc = TMF_RESP_FUNC_FAILED; 1191 return rc; 1192 } 1193 device_id = pm8001_dev->device_id; 1194 PM8001_EH_DBG(pm8001_ha, 1195 pm8001_printk("abort io to deviceid= %d\n", device_id)); 1196 tmf_task.tmf = TMF_ABORT_TASK; 1197 tmf_task.tag_of_task_to_be_managed = tag; 1198 rc = pm8001_issue_ssp_tmf(dev, lun.scsi_lun, &tmf_task); 1199 pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1200 pm8001_dev->sas_device, 0, tag); 1201 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1202 task->task_proto & SAS_PROTOCOL_STP) { 1203 dev = task->dev; 1204 pm8001_dev = dev->lldd_dev; 1205 pm8001_ha = pm8001_find_ha_by_dev(dev); 1206 rc = pm8001_find_tag(task, &tag); 1207 if (rc == 0) { 1208 printk(KERN_INFO "No such tag in %s\n", __func__); 1209 rc = TMF_RESP_FUNC_FAILED; 1210 return rc; 1211 } 1212 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1213 pm8001_dev->sas_device, 0, tag); 1214 } else if (task->task_proto & SAS_PROTOCOL_SMP) { 1215 /* SMP */ 1216 dev = task->dev; 1217 pm8001_dev = dev->lldd_dev; 1218 pm8001_ha = pm8001_find_ha_by_dev(dev); 1219 rc = pm8001_find_tag(task, &tag); 1220 if (rc == 0) { 1221 printk(KERN_INFO "No such tag in %s\n", __func__); 1222 rc = TMF_RESP_FUNC_FAILED; 1223 return rc; 1224 } 1225 rc = pm8001_exec_internal_task_abort(pm8001_ha, pm8001_dev, 1226 pm8001_dev->sas_device, 0, tag); 1227 1228 } 1229 out: 1230 if (rc != TMF_RESP_FUNC_COMPLETE) 1231 pm8001_printk("rc= %d\n", rc); 1232 return rc; 1233 } 1234 1235 int pm8001_abort_task_set(struct domain_device *dev, u8 *lun) 1236 { 1237 int rc = TMF_RESP_FUNC_FAILED; 1238 struct pm8001_tmf_task tmf_task; 1239 1240 tmf_task.tmf = TMF_ABORT_TASK_SET; 1241 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1242 return rc; 1243 } 1244 1245 int pm8001_clear_aca(struct domain_device *dev, u8 *lun) 1246 { 1247 int rc = TMF_RESP_FUNC_FAILED; 1248 struct pm8001_tmf_task tmf_task; 1249 1250 tmf_task.tmf = TMF_CLEAR_ACA; 1251 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1252 1253 return rc; 1254 } 1255 1256 int pm8001_clear_task_set(struct domain_device *dev, u8 *lun) 1257 { 1258 int rc = TMF_RESP_FUNC_FAILED; 1259 struct pm8001_tmf_task tmf_task; 1260 struct pm8001_device *pm8001_dev = dev->lldd_dev; 1261 struct pm8001_hba_info *pm8001_ha = pm8001_find_ha_by_dev(dev); 1262 1263 PM8001_EH_DBG(pm8001_ha, 1264 pm8001_printk("I_T_L_Q clear task set[%x]\n", 1265 pm8001_dev->device_id)); 1266 tmf_task.tmf = TMF_CLEAR_TASK_SET; 1267 rc = pm8001_issue_ssp_tmf(dev, lun, &tmf_task); 1268 return rc; 1269 } 1270 1271