1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Copyright (c) 2015 Linaro Ltd. 4 * Copyright (c) 2015 Hisilicon Limited. 5 */ 6 7 #include "hisi_sas.h" 8 #define DRV_NAME "hisi_sas" 9 10 #define DEV_IS_GONE(dev) \ 11 ((!dev) || (dev->dev_type == SAS_PHY_UNUSED)) 12 13 static int hisi_sas_softreset_ata_disk(struct domain_device *device); 14 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, 15 void *funcdata); 16 static void hisi_sas_release_task(struct hisi_hba *hisi_hba, 17 struct domain_device *device); 18 static void hisi_sas_dev_gone(struct domain_device *device); 19 20 struct hisi_sas_internal_abort_data { 21 bool rst_ha_timeout; /* reset the HA for timeout */ 22 }; 23 24 u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction) 25 { 26 switch (fis->command) { 27 case ATA_CMD_FPDMA_WRITE: 28 case ATA_CMD_FPDMA_READ: 29 case ATA_CMD_FPDMA_RECV: 30 case ATA_CMD_FPDMA_SEND: 31 case ATA_CMD_NCQ_NON_DATA: 32 return HISI_SAS_SATA_PROTOCOL_FPDMA; 33 34 case ATA_CMD_DOWNLOAD_MICRO: 35 case ATA_CMD_ID_ATA: 36 case ATA_CMD_PMP_READ: 37 case ATA_CMD_READ_LOG_EXT: 38 case ATA_CMD_PIO_READ: 39 case ATA_CMD_PIO_READ_EXT: 40 case ATA_CMD_PMP_WRITE: 41 case ATA_CMD_WRITE_LOG_EXT: 42 case ATA_CMD_PIO_WRITE: 43 case ATA_CMD_PIO_WRITE_EXT: 44 return HISI_SAS_SATA_PROTOCOL_PIO; 45 46 case ATA_CMD_DSM: 47 case ATA_CMD_DOWNLOAD_MICRO_DMA: 48 case ATA_CMD_PMP_READ_DMA: 49 case ATA_CMD_PMP_WRITE_DMA: 50 case ATA_CMD_READ: 51 case ATA_CMD_READ_EXT: 52 case ATA_CMD_READ_LOG_DMA_EXT: 53 case ATA_CMD_READ_STREAM_DMA_EXT: 54 case ATA_CMD_TRUSTED_RCV_DMA: 55 case ATA_CMD_TRUSTED_SND_DMA: 56 case ATA_CMD_WRITE: 57 case ATA_CMD_WRITE_EXT: 58 case ATA_CMD_WRITE_FUA_EXT: 59 case ATA_CMD_WRITE_QUEUED: 60 case ATA_CMD_WRITE_LOG_DMA_EXT: 61 case ATA_CMD_WRITE_STREAM_DMA_EXT: 62 case ATA_CMD_ZAC_MGMT_IN: 63 return HISI_SAS_SATA_PROTOCOL_DMA; 64 65 case ATA_CMD_CHK_POWER: 66 case ATA_CMD_DEV_RESET: 67 case ATA_CMD_EDD: 68 case ATA_CMD_FLUSH: 69 case ATA_CMD_FLUSH_EXT: 70 case ATA_CMD_VERIFY: 71 case ATA_CMD_VERIFY_EXT: 72 case ATA_CMD_SET_FEATURES: 73 case ATA_CMD_STANDBY: 74 case ATA_CMD_STANDBYNOW1: 75 case ATA_CMD_ZAC_MGMT_OUT: 76 return HISI_SAS_SATA_PROTOCOL_NONDATA; 77 78 case ATA_CMD_SET_MAX: 79 switch (fis->features) { 80 case ATA_SET_MAX_PASSWD: 81 case ATA_SET_MAX_LOCK: 82 return HISI_SAS_SATA_PROTOCOL_PIO; 83 84 case ATA_SET_MAX_PASSWD_DMA: 85 case ATA_SET_MAX_UNLOCK_DMA: 86 return HISI_SAS_SATA_PROTOCOL_DMA; 87 88 default: 89 return HISI_SAS_SATA_PROTOCOL_NONDATA; 90 } 91 92 default: 93 { 94 if (direction == DMA_NONE) 95 return HISI_SAS_SATA_PROTOCOL_NONDATA; 96 return HISI_SAS_SATA_PROTOCOL_PIO; 97 } 98 } 99 } 100 EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol); 101 102 void hisi_sas_sata_done(struct sas_task *task, 103 struct hisi_sas_slot *slot) 104 { 105 struct task_status_struct *ts = &task->task_status; 106 struct ata_task_resp *resp = (struct ata_task_resp *)ts->buf; 107 struct hisi_sas_status_buffer *status_buf = 108 hisi_sas_status_buf_addr_mem(slot); 109 u8 *iu = &status_buf->iu[0]; 110 struct dev_to_host_fis *d2h = (struct dev_to_host_fis *)iu; 111 112 resp->frame_len = sizeof(struct dev_to_host_fis); 113 memcpy(&resp->ending_fis[0], d2h, sizeof(struct dev_to_host_fis)); 114 115 ts->buf_valid_size = sizeof(*resp); 116 } 117 EXPORT_SYMBOL_GPL(hisi_sas_sata_done); 118 119 /* 120 * This function assumes linkrate mask fits in 8 bits, which it 121 * does for all HW versions supported. 122 */ 123 u8 hisi_sas_get_prog_phy_linkrate_mask(enum sas_linkrate max) 124 { 125 u8 rate = 0; 126 int i; 127 128 max -= SAS_LINK_RATE_1_5_GBPS; 129 for (i = 0; i <= max; i++) 130 rate |= 1 << (i * 2); 131 return rate; 132 } 133 EXPORT_SYMBOL_GPL(hisi_sas_get_prog_phy_linkrate_mask); 134 135 static struct hisi_hba *dev_to_hisi_hba(struct domain_device *device) 136 { 137 return device->port->ha->lldd_ha; 138 } 139 140 struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port) 141 { 142 return container_of(sas_port, struct hisi_sas_port, sas_port); 143 } 144 EXPORT_SYMBOL_GPL(to_hisi_sas_port); 145 146 void hisi_sas_stop_phys(struct hisi_hba *hisi_hba) 147 { 148 int phy_no; 149 150 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) 151 hisi_sas_phy_enable(hisi_hba, phy_no, 0); 152 } 153 EXPORT_SYMBOL_GPL(hisi_sas_stop_phys); 154 155 static void hisi_sas_slot_index_clear(struct hisi_hba *hisi_hba, int slot_idx) 156 { 157 void *bitmap = hisi_hba->slot_index_tags; 158 159 __clear_bit(slot_idx, bitmap); 160 } 161 162 static void hisi_sas_slot_index_free(struct hisi_hba *hisi_hba, int slot_idx) 163 { 164 if (hisi_hba->hw->slot_index_alloc || 165 slot_idx < HISI_SAS_RESERVED_IPTT) { 166 spin_lock(&hisi_hba->lock); 167 hisi_sas_slot_index_clear(hisi_hba, slot_idx); 168 spin_unlock(&hisi_hba->lock); 169 } 170 } 171 172 static void hisi_sas_slot_index_set(struct hisi_hba *hisi_hba, int slot_idx) 173 { 174 void *bitmap = hisi_hba->slot_index_tags; 175 176 __set_bit(slot_idx, bitmap); 177 } 178 179 static int hisi_sas_slot_index_alloc(struct hisi_hba *hisi_hba, 180 struct request *rq) 181 { 182 int index; 183 void *bitmap = hisi_hba->slot_index_tags; 184 185 if (rq) 186 return rq->tag + HISI_SAS_RESERVED_IPTT; 187 188 spin_lock(&hisi_hba->lock); 189 index = find_next_zero_bit(bitmap, HISI_SAS_RESERVED_IPTT, 190 hisi_hba->last_slot_index + 1); 191 if (index >= HISI_SAS_RESERVED_IPTT) { 192 index = find_next_zero_bit(bitmap, 193 HISI_SAS_RESERVED_IPTT, 194 0); 195 if (index >= HISI_SAS_RESERVED_IPTT) { 196 spin_unlock(&hisi_hba->lock); 197 return -SAS_QUEUE_FULL; 198 } 199 } 200 hisi_sas_slot_index_set(hisi_hba, index); 201 hisi_hba->last_slot_index = index; 202 spin_unlock(&hisi_hba->lock); 203 204 return index; 205 } 206 207 void hisi_sas_slot_task_free(struct hisi_hba *hisi_hba, struct sas_task *task, 208 struct hisi_sas_slot *slot, bool need_lock) 209 { 210 int device_id = slot->device_id; 211 struct hisi_sas_device *sas_dev = &hisi_hba->devices[device_id]; 212 213 if (task) { 214 struct device *dev = hisi_hba->dev; 215 216 if (!task->lldd_task) 217 return; 218 219 task->lldd_task = NULL; 220 221 if (!sas_protocol_ata(task->task_proto)) { 222 if (slot->n_elem) { 223 if (task->task_proto & SAS_PROTOCOL_SSP) 224 dma_unmap_sg(dev, task->scatter, 225 task->num_scatter, 226 task->data_dir); 227 else 228 dma_unmap_sg(dev, &task->smp_task.smp_req, 229 1, DMA_TO_DEVICE); 230 } 231 if (slot->n_elem_dif) { 232 struct sas_ssp_task *ssp_task = &task->ssp_task; 233 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd; 234 235 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), 236 scsi_prot_sg_count(scsi_cmnd), 237 task->data_dir); 238 } 239 } 240 } 241 242 if (need_lock) { 243 spin_lock(&sas_dev->lock); 244 list_del_init(&slot->entry); 245 spin_unlock(&sas_dev->lock); 246 } else { 247 list_del_init(&slot->entry); 248 } 249 250 memset(slot, 0, offsetof(struct hisi_sas_slot, buf)); 251 252 hisi_sas_slot_index_free(hisi_hba, slot->idx); 253 } 254 EXPORT_SYMBOL_GPL(hisi_sas_slot_task_free); 255 256 static void hisi_sas_task_prep_smp(struct hisi_hba *hisi_hba, 257 struct hisi_sas_slot *slot) 258 { 259 hisi_hba->hw->prep_smp(hisi_hba, slot); 260 } 261 262 static void hisi_sas_task_prep_ssp(struct hisi_hba *hisi_hba, 263 struct hisi_sas_slot *slot) 264 { 265 hisi_hba->hw->prep_ssp(hisi_hba, slot); 266 } 267 268 static void hisi_sas_task_prep_ata(struct hisi_hba *hisi_hba, 269 struct hisi_sas_slot *slot) 270 { 271 hisi_hba->hw->prep_stp(hisi_hba, slot); 272 } 273 274 static void hisi_sas_task_prep_abort(struct hisi_hba *hisi_hba, 275 struct hisi_sas_slot *slot) 276 { 277 hisi_hba->hw->prep_abort(hisi_hba, slot); 278 } 279 280 static void hisi_sas_dma_unmap(struct hisi_hba *hisi_hba, 281 struct sas_task *task, int n_elem) 282 { 283 struct device *dev = hisi_hba->dev; 284 285 if (!sas_protocol_ata(task->task_proto) && n_elem) { 286 if (task->num_scatter) { 287 dma_unmap_sg(dev, task->scatter, task->num_scatter, 288 task->data_dir); 289 } else if (task->task_proto & SAS_PROTOCOL_SMP) { 290 dma_unmap_sg(dev, &task->smp_task.smp_req, 291 1, DMA_TO_DEVICE); 292 } 293 } 294 } 295 296 static int hisi_sas_dma_map(struct hisi_hba *hisi_hba, 297 struct sas_task *task, int *n_elem) 298 { 299 struct device *dev = hisi_hba->dev; 300 int rc; 301 302 if (sas_protocol_ata(task->task_proto)) { 303 *n_elem = task->num_scatter; 304 } else { 305 unsigned int req_len; 306 307 if (task->num_scatter) { 308 *n_elem = dma_map_sg(dev, task->scatter, 309 task->num_scatter, task->data_dir); 310 if (!*n_elem) { 311 rc = -ENOMEM; 312 goto prep_out; 313 } 314 } else if (task->task_proto & SAS_PROTOCOL_SMP) { 315 *n_elem = dma_map_sg(dev, &task->smp_task.smp_req, 316 1, DMA_TO_DEVICE); 317 if (!*n_elem) { 318 rc = -ENOMEM; 319 goto prep_out; 320 } 321 req_len = sg_dma_len(&task->smp_task.smp_req); 322 if (req_len & 0x3) { 323 rc = -EINVAL; 324 goto err_out_dma_unmap; 325 } 326 } 327 } 328 329 if (*n_elem > HISI_SAS_SGE_PAGE_CNT) { 330 dev_err(dev, "task prep: n_elem(%d) > HISI_SAS_SGE_PAGE_CNT\n", 331 *n_elem); 332 rc = -EINVAL; 333 goto err_out_dma_unmap; 334 } 335 return 0; 336 337 err_out_dma_unmap: 338 /* It would be better to call dma_unmap_sg() here, but it's messy */ 339 hisi_sas_dma_unmap(hisi_hba, task, *n_elem); 340 prep_out: 341 return rc; 342 } 343 344 static void hisi_sas_dif_dma_unmap(struct hisi_hba *hisi_hba, 345 struct sas_task *task, int n_elem_dif) 346 { 347 struct device *dev = hisi_hba->dev; 348 349 if (n_elem_dif) { 350 struct sas_ssp_task *ssp_task = &task->ssp_task; 351 struct scsi_cmnd *scsi_cmnd = ssp_task->cmd; 352 353 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), 354 scsi_prot_sg_count(scsi_cmnd), 355 task->data_dir); 356 } 357 } 358 359 static int hisi_sas_dif_dma_map(struct hisi_hba *hisi_hba, 360 int *n_elem_dif, struct sas_task *task) 361 { 362 struct device *dev = hisi_hba->dev; 363 struct sas_ssp_task *ssp_task; 364 struct scsi_cmnd *scsi_cmnd; 365 int rc; 366 367 if (task->num_scatter) { 368 ssp_task = &task->ssp_task; 369 scsi_cmnd = ssp_task->cmd; 370 371 if (scsi_prot_sg_count(scsi_cmnd)) { 372 *n_elem_dif = dma_map_sg(dev, 373 scsi_prot_sglist(scsi_cmnd), 374 scsi_prot_sg_count(scsi_cmnd), 375 task->data_dir); 376 377 if (!*n_elem_dif) 378 return -ENOMEM; 379 380 if (*n_elem_dif > HISI_SAS_SGE_DIF_PAGE_CNT) { 381 dev_err(dev, "task prep: n_elem_dif(%d) too large\n", 382 *n_elem_dif); 383 rc = -EINVAL; 384 goto err_out_dif_dma_unmap; 385 } 386 } 387 } 388 389 return 0; 390 391 err_out_dif_dma_unmap: 392 dma_unmap_sg(dev, scsi_prot_sglist(scsi_cmnd), 393 scsi_prot_sg_count(scsi_cmnd), task->data_dir); 394 return rc; 395 } 396 397 static 398 void hisi_sas_task_deliver(struct hisi_hba *hisi_hba, 399 struct hisi_sas_slot *slot, 400 struct hisi_sas_dq *dq, 401 struct hisi_sas_device *sas_dev) 402 { 403 struct hisi_sas_cmd_hdr *cmd_hdr_base; 404 int dlvry_queue_slot, dlvry_queue; 405 struct sas_task *task = slot->task; 406 int wr_q_index; 407 408 spin_lock(&dq->lock); 409 wr_q_index = dq->wr_point; 410 dq->wr_point = (dq->wr_point + 1) % HISI_SAS_QUEUE_SLOTS; 411 list_add_tail(&slot->delivery, &dq->list); 412 spin_unlock(&dq->lock); 413 spin_lock(&sas_dev->lock); 414 list_add_tail(&slot->entry, &sas_dev->list); 415 spin_unlock(&sas_dev->lock); 416 417 dlvry_queue = dq->id; 418 dlvry_queue_slot = wr_q_index; 419 420 slot->device_id = sas_dev->device_id; 421 slot->dlvry_queue = dlvry_queue; 422 slot->dlvry_queue_slot = dlvry_queue_slot; 423 cmd_hdr_base = hisi_hba->cmd_hdr[dlvry_queue]; 424 slot->cmd_hdr = &cmd_hdr_base[dlvry_queue_slot]; 425 426 task->lldd_task = slot; 427 428 memset(slot->cmd_hdr, 0, sizeof(struct hisi_sas_cmd_hdr)); 429 memset(hisi_sas_cmd_hdr_addr_mem(slot), 0, HISI_SAS_COMMAND_TABLE_SZ); 430 memset(hisi_sas_status_buf_addr_mem(slot), 0, 431 sizeof(struct hisi_sas_err_record)); 432 433 switch (task->task_proto) { 434 case SAS_PROTOCOL_SMP: 435 hisi_sas_task_prep_smp(hisi_hba, slot); 436 break; 437 case SAS_PROTOCOL_SSP: 438 hisi_sas_task_prep_ssp(hisi_hba, slot); 439 break; 440 case SAS_PROTOCOL_SATA: 441 case SAS_PROTOCOL_STP: 442 case SAS_PROTOCOL_STP_ALL: 443 hisi_sas_task_prep_ata(hisi_hba, slot); 444 break; 445 case SAS_PROTOCOL_INTERNAL_ABORT: 446 hisi_sas_task_prep_abort(hisi_hba, slot); 447 break; 448 default: 449 return; 450 } 451 452 /* Make slot memories observable before marking as ready */ 453 smp_wmb(); 454 WRITE_ONCE(slot->ready, 1); 455 456 spin_lock(&dq->lock); 457 hisi_hba->hw->start_delivery(dq); 458 spin_unlock(&dq->lock); 459 } 460 461 static int hisi_sas_queue_command(struct sas_task *task, gfp_t gfp_flags) 462 { 463 int n_elem = 0, n_elem_dif = 0; 464 struct domain_device *device = task->dev; 465 struct asd_sas_port *sas_port = device->port; 466 struct hisi_sas_device *sas_dev = device->lldd_dev; 467 bool internal_abort = sas_is_internal_abort(task); 468 struct hisi_sas_dq *dq = NULL; 469 struct hisi_sas_port *port; 470 struct hisi_hba *hisi_hba; 471 struct hisi_sas_slot *slot; 472 struct request *rq = NULL; 473 struct device *dev; 474 int rc; 475 476 if (!sas_port) { 477 struct task_status_struct *ts = &task->task_status; 478 479 ts->resp = SAS_TASK_UNDELIVERED; 480 ts->stat = SAS_PHY_DOWN; 481 /* 482 * libsas will use dev->port, should 483 * not call task_done for sata 484 */ 485 if (device->dev_type != SAS_SATA_DEV && !internal_abort) 486 task->task_done(task); 487 return -ECOMM; 488 } 489 490 hisi_hba = dev_to_hisi_hba(device); 491 dev = hisi_hba->dev; 492 493 switch (task->task_proto) { 494 case SAS_PROTOCOL_SSP: 495 case SAS_PROTOCOL_SMP: 496 case SAS_PROTOCOL_SATA: 497 case SAS_PROTOCOL_STP: 498 case SAS_PROTOCOL_STP_ALL: 499 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) { 500 if (!gfpflags_allow_blocking(gfp_flags)) 501 return -EINVAL; 502 503 down(&hisi_hba->sem); 504 up(&hisi_hba->sem); 505 } 506 507 if (DEV_IS_GONE(sas_dev)) { 508 if (sas_dev) 509 dev_info(dev, "task prep: device %d not ready\n", 510 sas_dev->device_id); 511 else 512 dev_info(dev, "task prep: device %016llx not ready\n", 513 SAS_ADDR(device->sas_addr)); 514 515 return -ECOMM; 516 } 517 518 port = to_hisi_sas_port(sas_port); 519 if (!port->port_attached) { 520 dev_info(dev, "task prep: %s port%d not attach device\n", 521 dev_is_sata(device) ? "SATA/STP" : "SAS", 522 device->port->id); 523 524 return -ECOMM; 525 } 526 527 rq = sas_task_find_rq(task); 528 if (rq) { 529 unsigned int dq_index; 530 u32 blk_tag; 531 532 blk_tag = blk_mq_unique_tag(rq); 533 dq_index = blk_mq_unique_tag_to_hwq(blk_tag); 534 dq = &hisi_hba->dq[dq_index]; 535 } else { 536 int queue; 537 538 if (hisi_hba->iopoll_q_cnt) { 539 /* 540 * Use interrupt queue (queue 0) to deliver and complete 541 * internal IOs of libsas or libata when there is at least 542 * one iopoll queue 543 */ 544 queue = 0; 545 } else { 546 struct Scsi_Host *shost = hisi_hba->shost; 547 struct blk_mq_queue_map *qmap = &shost->tag_set.map[HCTX_TYPE_DEFAULT]; 548 549 queue = qmap->mq_map[raw_smp_processor_id()]; 550 } 551 dq = &hisi_hba->dq[queue]; 552 } 553 break; 554 case SAS_PROTOCOL_INTERNAL_ABORT: 555 if (!hisi_hba->hw->prep_abort) 556 return TMF_RESP_FUNC_FAILED; 557 558 if (test_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags)) 559 return -EIO; 560 561 hisi_hba = dev_to_hisi_hba(device); 562 563 if (unlikely(test_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags))) 564 return -EINVAL; 565 566 port = to_hisi_sas_port(sas_port); 567 dq = &hisi_hba->dq[task->abort_task.qid]; 568 break; 569 default: 570 dev_err(hisi_hba->dev, "task prep: unknown/unsupported proto (0x%x)\n", 571 task->task_proto); 572 return -EINVAL; 573 } 574 575 rc = hisi_sas_dma_map(hisi_hba, task, &n_elem); 576 if (rc < 0) 577 goto prep_out; 578 579 if (!sas_protocol_ata(task->task_proto)) { 580 rc = hisi_sas_dif_dma_map(hisi_hba, &n_elem_dif, task); 581 if (rc < 0) 582 goto err_out_dma_unmap; 583 } 584 585 if (!internal_abort && hisi_hba->hw->slot_index_alloc) 586 rc = hisi_hba->hw->slot_index_alloc(hisi_hba, device); 587 else 588 rc = hisi_sas_slot_index_alloc(hisi_hba, rq); 589 590 if (rc < 0) 591 goto err_out_dif_dma_unmap; 592 593 slot = &hisi_hba->slot_info[rc]; 594 slot->n_elem = n_elem; 595 slot->n_elem_dif = n_elem_dif; 596 slot->task = task; 597 slot->port = port; 598 599 slot->tmf = task->tmf; 600 slot->is_internal = !!task->tmf || internal_abort; 601 602 /* protect task_prep and start_delivery sequence */ 603 hisi_sas_task_deliver(hisi_hba, slot, dq, sas_dev); 604 605 return 0; 606 607 err_out_dif_dma_unmap: 608 if (!sas_protocol_ata(task->task_proto)) 609 hisi_sas_dif_dma_unmap(hisi_hba, task, n_elem_dif); 610 err_out_dma_unmap: 611 hisi_sas_dma_unmap(hisi_hba, task, n_elem); 612 prep_out: 613 dev_err(dev, "task exec: failed[%d]!\n", rc); 614 return rc; 615 } 616 617 static void hisi_sas_bytes_dmaed(struct hisi_hba *hisi_hba, int phy_no, 618 gfp_t gfp_flags) 619 { 620 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 621 struct asd_sas_phy *sas_phy = &phy->sas_phy; 622 623 if (!phy->phy_attached) 624 return; 625 626 sas_notify_phy_event(sas_phy, PHYE_OOB_DONE, gfp_flags); 627 628 if (sas_phy->phy) { 629 struct sas_phy *sphy = sas_phy->phy; 630 631 sphy->negotiated_linkrate = sas_phy->linkrate; 632 sphy->minimum_linkrate_hw = SAS_LINK_RATE_1_5_GBPS; 633 sphy->maximum_linkrate_hw = 634 hisi_hba->hw->phy_get_max_linkrate(); 635 if (sphy->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) 636 sphy->minimum_linkrate = phy->minimum_linkrate; 637 638 if (sphy->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) 639 sphy->maximum_linkrate = phy->maximum_linkrate; 640 } 641 642 if (phy->phy_type & PORT_TYPE_SAS) { 643 struct sas_identify_frame *id; 644 645 id = (struct sas_identify_frame *)phy->frame_rcvd; 646 id->dev_type = phy->identify.device_type; 647 id->initiator_bits = SAS_PROTOCOL_ALL; 648 id->target_bits = phy->identify.target_port_protocols; 649 } else if (phy->phy_type & PORT_TYPE_SATA) { 650 /* Nothing */ 651 } 652 653 sas_phy->frame_rcvd_size = phy->frame_rcvd_size; 654 sas_notify_port_event(sas_phy, PORTE_BYTES_DMAED, gfp_flags); 655 } 656 657 static struct hisi_sas_device *hisi_sas_alloc_dev(struct domain_device *device) 658 { 659 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 660 struct hisi_sas_device *sas_dev = NULL; 661 int last = hisi_hba->last_dev_id; 662 int first = (hisi_hba->last_dev_id + 1) % HISI_SAS_MAX_DEVICES; 663 int i; 664 665 spin_lock(&hisi_hba->lock); 666 for (i = first; i != last; i %= HISI_SAS_MAX_DEVICES) { 667 if (hisi_hba->devices[i].dev_type == SAS_PHY_UNUSED) { 668 int queue = i % hisi_hba->queue_count; 669 struct hisi_sas_dq *dq = &hisi_hba->dq[queue]; 670 671 hisi_hba->devices[i].device_id = i; 672 sas_dev = &hisi_hba->devices[i]; 673 sas_dev->dev_status = HISI_SAS_DEV_INIT; 674 sas_dev->dev_type = device->dev_type; 675 sas_dev->hisi_hba = hisi_hba; 676 sas_dev->sas_device = device; 677 sas_dev->dq = dq; 678 spin_lock_init(&sas_dev->lock); 679 INIT_LIST_HEAD(&hisi_hba->devices[i].list); 680 break; 681 } 682 i++; 683 } 684 hisi_hba->last_dev_id = i; 685 spin_unlock(&hisi_hba->lock); 686 687 return sas_dev; 688 } 689 690 static void hisi_sas_sync_poll_cq(struct hisi_sas_cq *cq) 691 { 692 /* make sure CQ entries being processed are processed to completion */ 693 spin_lock(&cq->poll_lock); 694 spin_unlock(&cq->poll_lock); 695 } 696 697 static bool hisi_sas_queue_is_poll(struct hisi_sas_cq *cq) 698 { 699 struct hisi_hba *hisi_hba = cq->hisi_hba; 700 701 if (cq->id < hisi_hba->queue_count - hisi_hba->iopoll_q_cnt) 702 return false; 703 return true; 704 } 705 706 static void hisi_sas_sync_cq(struct hisi_sas_cq *cq) 707 { 708 if (hisi_sas_queue_is_poll(cq)) 709 hisi_sas_sync_poll_cq(cq); 710 else 711 synchronize_irq(cq->irq_no); 712 } 713 714 void hisi_sas_sync_poll_cqs(struct hisi_hba *hisi_hba) 715 { 716 int i; 717 718 for (i = 0; i < hisi_hba->queue_count; i++) { 719 struct hisi_sas_cq *cq = &hisi_hba->cq[i]; 720 721 if (hisi_sas_queue_is_poll(cq)) 722 hisi_sas_sync_poll_cq(cq); 723 } 724 } 725 EXPORT_SYMBOL_GPL(hisi_sas_sync_poll_cqs); 726 727 void hisi_sas_sync_cqs(struct hisi_hba *hisi_hba) 728 { 729 int i; 730 731 for (i = 0; i < hisi_hba->queue_count; i++) { 732 struct hisi_sas_cq *cq = &hisi_hba->cq[i]; 733 734 hisi_sas_sync_cq(cq); 735 } 736 } 737 EXPORT_SYMBOL_GPL(hisi_sas_sync_cqs); 738 739 static void hisi_sas_tmf_aborted(struct sas_task *task) 740 { 741 struct hisi_sas_slot *slot = task->lldd_task; 742 struct domain_device *device = task->dev; 743 struct hisi_sas_device *sas_dev = device->lldd_dev; 744 struct hisi_hba *hisi_hba = sas_dev->hisi_hba; 745 746 if (slot) { 747 struct hisi_sas_cq *cq = 748 &hisi_hba->cq[slot->dlvry_queue]; 749 /* 750 * sync irq or poll queue to avoid free'ing task 751 * before using task in IO completion 752 */ 753 hisi_sas_sync_cq(cq); 754 slot->task = NULL; 755 } 756 } 757 758 #define HISI_SAS_DISK_RECOVER_CNT 3 759 static int hisi_sas_init_device(struct domain_device *device) 760 { 761 int rc = TMF_RESP_FUNC_COMPLETE; 762 struct scsi_lun lun; 763 int retry = HISI_SAS_DISK_RECOVER_CNT; 764 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 765 766 switch (device->dev_type) { 767 case SAS_END_DEVICE: 768 int_to_scsilun(0, &lun); 769 770 while (retry-- > 0) { 771 rc = sas_abort_task_set(device, lun.scsi_lun); 772 if (rc == TMF_RESP_FUNC_COMPLETE) { 773 hisi_sas_release_task(hisi_hba, device); 774 break; 775 } 776 } 777 break; 778 case SAS_SATA_DEV: 779 case SAS_SATA_PM: 780 case SAS_SATA_PM_PORT: 781 case SAS_SATA_PENDING: 782 /* 783 * If an expander is swapped when a SATA disk is attached then 784 * we should issue a hard reset to clear previous affiliation 785 * of STP target port, see SPL (chapter 6.19.4). 786 * 787 * However we don't need to issue a hard reset here for these 788 * reasons: 789 * a. When probing the device, libsas/libata already issues a 790 * hard reset in sas_probe_sata() -> ata_sas_async_probe(). 791 * Note that in hisi_sas_debug_I_T_nexus_reset() we take care 792 * to issue a hard reset by checking the dev status (== INIT). 793 * b. When resetting the controller, this is simply unnecessary. 794 */ 795 while (retry-- > 0) { 796 rc = hisi_sas_softreset_ata_disk(device); 797 if (!rc) 798 break; 799 } 800 break; 801 default: 802 break; 803 } 804 805 return rc; 806 } 807 808 int hisi_sas_slave_alloc(struct scsi_device *sdev) 809 { 810 struct domain_device *ddev = sdev_to_domain_dev(sdev); 811 struct hisi_sas_device *sas_dev = ddev->lldd_dev; 812 int rc; 813 814 rc = sas_slave_alloc(sdev); 815 if (rc) 816 return rc; 817 818 rc = hisi_sas_init_device(ddev); 819 if (rc) 820 return rc; 821 sas_dev->dev_status = HISI_SAS_DEV_NORMAL; 822 return 0; 823 } 824 EXPORT_SYMBOL_GPL(hisi_sas_slave_alloc); 825 826 static int hisi_sas_dev_found(struct domain_device *device) 827 { 828 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 829 struct domain_device *parent_dev = device->parent; 830 struct hisi_sas_device *sas_dev; 831 struct device *dev = hisi_hba->dev; 832 int rc; 833 834 if (hisi_hba->hw->alloc_dev) 835 sas_dev = hisi_hba->hw->alloc_dev(device); 836 else 837 sas_dev = hisi_sas_alloc_dev(device); 838 if (!sas_dev) { 839 dev_err(dev, "fail alloc dev: max support %d devices\n", 840 HISI_SAS_MAX_DEVICES); 841 return -EINVAL; 842 } 843 844 device->lldd_dev = sas_dev; 845 hisi_hba->hw->setup_itct(hisi_hba, sas_dev); 846 847 if (parent_dev && dev_is_expander(parent_dev->dev_type)) { 848 int phy_no; 849 850 phy_no = sas_find_attached_phy_id(&parent_dev->ex_dev, device); 851 if (phy_no < 0) { 852 dev_info(dev, "dev found: no attached " 853 "dev:%016llx at ex:%016llx\n", 854 SAS_ADDR(device->sas_addr), 855 SAS_ADDR(parent_dev->sas_addr)); 856 rc = phy_no; 857 goto err_out; 858 } 859 } 860 861 dev_info(dev, "dev[%d:%x] found\n", 862 sas_dev->device_id, sas_dev->dev_type); 863 864 return 0; 865 866 err_out: 867 hisi_sas_dev_gone(device); 868 return rc; 869 } 870 871 int hisi_sas_slave_configure(struct scsi_device *sdev) 872 { 873 struct domain_device *dev = sdev_to_domain_dev(sdev); 874 int ret = sas_slave_configure(sdev); 875 876 if (ret) 877 return ret; 878 if (!dev_is_sata(dev)) 879 sas_change_queue_depth(sdev, 64); 880 881 return 0; 882 } 883 EXPORT_SYMBOL_GPL(hisi_sas_slave_configure); 884 885 void hisi_sas_scan_start(struct Scsi_Host *shost) 886 { 887 struct hisi_hba *hisi_hba = shost_priv(shost); 888 889 hisi_hba->hw->phys_init(hisi_hba); 890 } 891 EXPORT_SYMBOL_GPL(hisi_sas_scan_start); 892 893 int hisi_sas_scan_finished(struct Scsi_Host *shost, unsigned long time) 894 { 895 struct hisi_hba *hisi_hba = shost_priv(shost); 896 struct sas_ha_struct *sha = &hisi_hba->sha; 897 898 /* Wait for PHY up interrupt to occur */ 899 if (time < HZ) 900 return 0; 901 902 sas_drain_work(sha); 903 return 1; 904 } 905 EXPORT_SYMBOL_GPL(hisi_sas_scan_finished); 906 907 static void hisi_sas_phyup_work_common(struct work_struct *work, 908 enum hisi_sas_phy_event event) 909 { 910 struct hisi_sas_phy *phy = 911 container_of(work, typeof(*phy), works[event]); 912 struct hisi_hba *hisi_hba = phy->hisi_hba; 913 struct asd_sas_phy *sas_phy = &phy->sas_phy; 914 int phy_no = sas_phy->id; 915 916 phy->wait_phyup_cnt = 0; 917 if (phy->identify.target_port_protocols == SAS_PROTOCOL_SSP) 918 hisi_hba->hw->sl_notify_ssp(hisi_hba, phy_no); 919 hisi_sas_bytes_dmaed(hisi_hba, phy_no, GFP_KERNEL); 920 } 921 922 static void hisi_sas_phyup_work(struct work_struct *work) 923 { 924 hisi_sas_phyup_work_common(work, HISI_PHYE_PHY_UP); 925 } 926 927 static void hisi_sas_linkreset_work(struct work_struct *work) 928 { 929 struct hisi_sas_phy *phy = 930 container_of(work, typeof(*phy), works[HISI_PHYE_LINK_RESET]); 931 struct asd_sas_phy *sas_phy = &phy->sas_phy; 932 933 hisi_sas_control_phy(sas_phy, PHY_FUNC_LINK_RESET, NULL); 934 } 935 936 static void hisi_sas_phyup_pm_work(struct work_struct *work) 937 { 938 struct hisi_sas_phy *phy = 939 container_of(work, typeof(*phy), works[HISI_PHYE_PHY_UP_PM]); 940 struct hisi_hba *hisi_hba = phy->hisi_hba; 941 struct device *dev = hisi_hba->dev; 942 943 hisi_sas_phyup_work_common(work, HISI_PHYE_PHY_UP_PM); 944 pm_runtime_put_sync(dev); 945 } 946 947 static const work_func_t hisi_sas_phye_fns[HISI_PHYES_NUM] = { 948 [HISI_PHYE_PHY_UP] = hisi_sas_phyup_work, 949 [HISI_PHYE_LINK_RESET] = hisi_sas_linkreset_work, 950 [HISI_PHYE_PHY_UP_PM] = hisi_sas_phyup_pm_work, 951 }; 952 953 bool hisi_sas_notify_phy_event(struct hisi_sas_phy *phy, 954 enum hisi_sas_phy_event event) 955 { 956 struct hisi_hba *hisi_hba = phy->hisi_hba; 957 958 if (WARN_ON(event >= HISI_PHYES_NUM)) 959 return false; 960 961 return queue_work(hisi_hba->wq, &phy->works[event]); 962 } 963 EXPORT_SYMBOL_GPL(hisi_sas_notify_phy_event); 964 965 static void hisi_sas_wait_phyup_timedout(struct timer_list *t) 966 { 967 struct hisi_sas_phy *phy = from_timer(phy, t, timer); 968 struct hisi_hba *hisi_hba = phy->hisi_hba; 969 struct device *dev = hisi_hba->dev; 970 int phy_no = phy->sas_phy.id; 971 972 dev_warn(dev, "phy%d wait phyup timeout, issuing link reset\n", phy_no); 973 hisi_sas_notify_phy_event(phy, HISI_PHYE_LINK_RESET); 974 } 975 976 #define HISI_SAS_WAIT_PHYUP_RETRIES 10 977 978 void hisi_sas_phy_oob_ready(struct hisi_hba *hisi_hba, int phy_no) 979 { 980 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 981 struct device *dev = hisi_hba->dev; 982 unsigned long flags; 983 984 dev_dbg(dev, "phy%d OOB ready\n", phy_no); 985 spin_lock_irqsave(&phy->lock, flags); 986 if (phy->phy_attached) { 987 spin_unlock_irqrestore(&phy->lock, flags); 988 return; 989 } 990 991 if (!timer_pending(&phy->timer)) { 992 if (phy->wait_phyup_cnt < HISI_SAS_WAIT_PHYUP_RETRIES) { 993 phy->wait_phyup_cnt++; 994 phy->timer.expires = jiffies + 995 HISI_SAS_WAIT_PHYUP_TIMEOUT; 996 add_timer(&phy->timer); 997 spin_unlock_irqrestore(&phy->lock, flags); 998 return; 999 } 1000 1001 dev_warn(dev, "phy%d failed to come up %d times, giving up\n", 1002 phy_no, phy->wait_phyup_cnt); 1003 phy->wait_phyup_cnt = 0; 1004 } 1005 spin_unlock_irqrestore(&phy->lock, flags); 1006 } 1007 1008 EXPORT_SYMBOL_GPL(hisi_sas_phy_oob_ready); 1009 1010 static void hisi_sas_phy_init(struct hisi_hba *hisi_hba, int phy_no) 1011 { 1012 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 1013 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1014 int i; 1015 1016 phy->hisi_hba = hisi_hba; 1017 phy->port = NULL; 1018 phy->minimum_linkrate = SAS_LINK_RATE_1_5_GBPS; 1019 phy->maximum_linkrate = hisi_hba->hw->phy_get_max_linkrate(); 1020 sas_phy->enabled = (phy_no < hisi_hba->n_phy) ? 1 : 0; 1021 sas_phy->class = SAS; 1022 sas_phy->iproto = SAS_PROTOCOL_ALL; 1023 sas_phy->tproto = 0; 1024 sas_phy->type = PHY_TYPE_PHYSICAL; 1025 sas_phy->role = PHY_ROLE_INITIATOR; 1026 sas_phy->oob_mode = OOB_NOT_CONNECTED; 1027 sas_phy->linkrate = SAS_LINK_RATE_UNKNOWN; 1028 sas_phy->id = phy_no; 1029 sas_phy->sas_addr = &hisi_hba->sas_addr[0]; 1030 sas_phy->frame_rcvd = &phy->frame_rcvd[0]; 1031 sas_phy->ha = (struct sas_ha_struct *)hisi_hba->shost->hostdata; 1032 sas_phy->lldd_phy = phy; 1033 1034 for (i = 0; i < HISI_PHYES_NUM; i++) 1035 INIT_WORK(&phy->works[i], hisi_sas_phye_fns[i]); 1036 1037 spin_lock_init(&phy->lock); 1038 1039 timer_setup(&phy->timer, hisi_sas_wait_phyup_timedout, 0); 1040 } 1041 1042 /* Wrapper to ensure we track hisi_sas_phy.enable properly */ 1043 void hisi_sas_phy_enable(struct hisi_hba *hisi_hba, int phy_no, int enable) 1044 { 1045 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 1046 struct asd_sas_phy *aphy = &phy->sas_phy; 1047 struct sas_phy *sphy = aphy->phy; 1048 unsigned long flags; 1049 1050 spin_lock_irqsave(&phy->lock, flags); 1051 1052 if (enable) { 1053 /* We may have been enabled already; if so, don't touch */ 1054 if (!phy->enable) 1055 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 1056 hisi_hba->hw->phy_start(hisi_hba, phy_no); 1057 } else { 1058 sphy->negotiated_linkrate = SAS_PHY_DISABLED; 1059 hisi_hba->hw->phy_disable(hisi_hba, phy_no); 1060 } 1061 phy->enable = enable; 1062 spin_unlock_irqrestore(&phy->lock, flags); 1063 } 1064 EXPORT_SYMBOL_GPL(hisi_sas_phy_enable); 1065 1066 static void hisi_sas_port_notify_formed(struct asd_sas_phy *sas_phy) 1067 { 1068 struct sas_ha_struct *sas_ha = sas_phy->ha; 1069 struct hisi_hba *hisi_hba = sas_ha->lldd_ha; 1070 struct hisi_sas_phy *phy = sas_phy->lldd_phy; 1071 struct asd_sas_port *sas_port = sas_phy->port; 1072 struct hisi_sas_port *port; 1073 unsigned long flags; 1074 1075 if (!sas_port) 1076 return; 1077 1078 port = to_hisi_sas_port(sas_port); 1079 spin_lock_irqsave(&hisi_hba->lock, flags); 1080 port->port_attached = 1; 1081 port->id = phy->port_id; 1082 phy->port = port; 1083 sas_port->lldd_port = port; 1084 spin_unlock_irqrestore(&hisi_hba->lock, flags); 1085 } 1086 1087 static void hisi_sas_do_release_task(struct hisi_hba *hisi_hba, struct sas_task *task, 1088 struct hisi_sas_slot *slot, bool need_lock) 1089 { 1090 if (task) { 1091 unsigned long flags; 1092 struct task_status_struct *ts; 1093 1094 ts = &task->task_status; 1095 1096 ts->resp = SAS_TASK_COMPLETE; 1097 ts->stat = SAS_ABORTED_TASK; 1098 spin_lock_irqsave(&task->task_state_lock, flags); 1099 task->task_state_flags &= ~SAS_TASK_STATE_PENDING; 1100 if (!slot->is_internal && task->task_proto != SAS_PROTOCOL_SMP) 1101 task->task_state_flags |= SAS_TASK_STATE_DONE; 1102 spin_unlock_irqrestore(&task->task_state_lock, flags); 1103 } 1104 1105 hisi_sas_slot_task_free(hisi_hba, task, slot, need_lock); 1106 } 1107 1108 static void hisi_sas_release_task(struct hisi_hba *hisi_hba, 1109 struct domain_device *device) 1110 { 1111 struct hisi_sas_slot *slot, *slot2; 1112 struct hisi_sas_device *sas_dev = device->lldd_dev; 1113 1114 spin_lock(&sas_dev->lock); 1115 list_for_each_entry_safe(slot, slot2, &sas_dev->list, entry) 1116 hisi_sas_do_release_task(hisi_hba, slot->task, slot, false); 1117 1118 spin_unlock(&sas_dev->lock); 1119 } 1120 1121 void hisi_sas_release_tasks(struct hisi_hba *hisi_hba) 1122 { 1123 struct hisi_sas_device *sas_dev; 1124 struct domain_device *device; 1125 int i; 1126 1127 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 1128 sas_dev = &hisi_hba->devices[i]; 1129 device = sas_dev->sas_device; 1130 1131 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || 1132 !device) 1133 continue; 1134 1135 hisi_sas_release_task(hisi_hba, device); 1136 } 1137 } 1138 EXPORT_SYMBOL_GPL(hisi_sas_release_tasks); 1139 1140 static void hisi_sas_dereg_device(struct hisi_hba *hisi_hba, 1141 struct domain_device *device) 1142 { 1143 if (hisi_hba->hw->dereg_device) 1144 hisi_hba->hw->dereg_device(hisi_hba, device); 1145 } 1146 1147 static int 1148 hisi_sas_internal_task_abort_dev(struct hisi_sas_device *sas_dev, 1149 bool rst_ha_timeout) 1150 { 1151 struct hisi_sas_internal_abort_data data = { rst_ha_timeout }; 1152 struct domain_device *device = sas_dev->sas_device; 1153 struct hisi_hba *hisi_hba = sas_dev->hisi_hba; 1154 int i, rc; 1155 1156 for (i = 0; i < hisi_hba->cq_nvecs; i++) { 1157 struct hisi_sas_cq *cq = &hisi_hba->cq[i]; 1158 const struct cpumask *mask = cq->irq_mask; 1159 1160 if (mask && !cpumask_intersects(cpu_online_mask, mask)) 1161 continue; 1162 rc = sas_execute_internal_abort_dev(device, i, &data); 1163 if (rc) 1164 return rc; 1165 } 1166 1167 return 0; 1168 } 1169 1170 static void hisi_sas_dev_gone(struct domain_device *device) 1171 { 1172 struct hisi_sas_device *sas_dev = device->lldd_dev; 1173 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1174 struct device *dev = hisi_hba->dev; 1175 int ret = 0; 1176 1177 dev_info(dev, "dev[%d:%x] is gone\n", 1178 sas_dev->device_id, sas_dev->dev_type); 1179 1180 down(&hisi_hba->sem); 1181 if (!test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) { 1182 hisi_sas_internal_task_abort_dev(sas_dev, true); 1183 1184 hisi_sas_dereg_device(hisi_hba, device); 1185 1186 ret = hisi_hba->hw->clear_itct(hisi_hba, sas_dev); 1187 device->lldd_dev = NULL; 1188 } 1189 1190 if (hisi_hba->hw->free_device) 1191 hisi_hba->hw->free_device(sas_dev); 1192 1193 /* Don't mark it as SAS_PHY_UNUSED if failed to clear ITCT */ 1194 if (!ret) 1195 sas_dev->dev_type = SAS_PHY_UNUSED; 1196 sas_dev->sas_device = NULL; 1197 up(&hisi_hba->sem); 1198 } 1199 1200 static int hisi_sas_phy_set_linkrate(struct hisi_hba *hisi_hba, int phy_no, 1201 struct sas_phy_linkrates *r) 1202 { 1203 struct sas_phy_linkrates _r; 1204 1205 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 1206 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1207 enum sas_linkrate min, max; 1208 1209 if (r->minimum_linkrate > SAS_LINK_RATE_1_5_GBPS) 1210 return -EINVAL; 1211 1212 if (r->maximum_linkrate == SAS_LINK_RATE_UNKNOWN) { 1213 max = sas_phy->phy->maximum_linkrate; 1214 min = r->minimum_linkrate; 1215 } else if (r->minimum_linkrate == SAS_LINK_RATE_UNKNOWN) { 1216 max = r->maximum_linkrate; 1217 min = sas_phy->phy->minimum_linkrate; 1218 } else 1219 return -EINVAL; 1220 1221 _r.maximum_linkrate = max; 1222 _r.minimum_linkrate = min; 1223 1224 sas_phy->phy->maximum_linkrate = max; 1225 sas_phy->phy->minimum_linkrate = min; 1226 1227 hisi_sas_phy_enable(hisi_hba, phy_no, 0); 1228 msleep(100); 1229 hisi_hba->hw->phy_set_linkrate(hisi_hba, phy_no, &_r); 1230 hisi_sas_phy_enable(hisi_hba, phy_no, 1); 1231 1232 return 0; 1233 } 1234 1235 static int hisi_sas_control_phy(struct asd_sas_phy *sas_phy, enum phy_func func, 1236 void *funcdata) 1237 { 1238 struct hisi_sas_phy *phy = container_of(sas_phy, 1239 struct hisi_sas_phy, sas_phy); 1240 struct sas_ha_struct *sas_ha = sas_phy->ha; 1241 struct hisi_hba *hisi_hba = sas_ha->lldd_ha; 1242 struct device *dev = hisi_hba->dev; 1243 DECLARE_COMPLETION_ONSTACK(completion); 1244 int phy_no = sas_phy->id; 1245 u8 sts = phy->phy_attached; 1246 int ret = 0; 1247 1248 down(&hisi_hba->sem); 1249 phy->reset_completion = &completion; 1250 1251 switch (func) { 1252 case PHY_FUNC_HARD_RESET: 1253 hisi_hba->hw->phy_hard_reset(hisi_hba, phy_no); 1254 break; 1255 1256 case PHY_FUNC_LINK_RESET: 1257 hisi_sas_phy_enable(hisi_hba, phy_no, 0); 1258 msleep(100); 1259 hisi_sas_phy_enable(hisi_hba, phy_no, 1); 1260 break; 1261 1262 case PHY_FUNC_DISABLE: 1263 hisi_sas_phy_enable(hisi_hba, phy_no, 0); 1264 goto out; 1265 1266 case PHY_FUNC_SET_LINK_RATE: 1267 ret = hisi_sas_phy_set_linkrate(hisi_hba, phy_no, funcdata); 1268 break; 1269 1270 case PHY_FUNC_GET_EVENTS: 1271 if (hisi_hba->hw->get_events) { 1272 hisi_hba->hw->get_events(hisi_hba, phy_no); 1273 goto out; 1274 } 1275 fallthrough; 1276 case PHY_FUNC_RELEASE_SPINUP_HOLD: 1277 default: 1278 ret = -EOPNOTSUPP; 1279 goto out; 1280 } 1281 1282 if (sts && !wait_for_completion_timeout(&completion, 1283 HISI_SAS_WAIT_PHYUP_TIMEOUT)) { 1284 dev_warn(dev, "phy%d wait phyup timed out for func %d\n", 1285 phy_no, func); 1286 if (phy->in_reset) 1287 ret = -ETIMEDOUT; 1288 } 1289 1290 out: 1291 phy->reset_completion = NULL; 1292 1293 up(&hisi_hba->sem); 1294 return ret; 1295 } 1296 1297 static void hisi_sas_fill_ata_reset_cmd(struct ata_device *dev, 1298 bool reset, int pmp, u8 *fis) 1299 { 1300 struct ata_taskfile tf; 1301 1302 ata_tf_init(dev, &tf); 1303 if (reset) 1304 tf.ctl |= ATA_SRST; 1305 else 1306 tf.ctl &= ~ATA_SRST; 1307 tf.command = ATA_CMD_DEV_RESET; 1308 ata_tf_to_fis(&tf, pmp, 0, fis); 1309 } 1310 1311 static int hisi_sas_softreset_ata_disk(struct domain_device *device) 1312 { 1313 u8 fis[20] = {0}; 1314 struct ata_port *ap = device->sata_dev.ap; 1315 struct ata_link *link; 1316 int rc = TMF_RESP_FUNC_FAILED; 1317 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1318 struct device *dev = hisi_hba->dev; 1319 1320 ata_for_each_link(link, ap, EDGE) { 1321 int pmp = sata_srst_pmp(link); 1322 1323 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); 1324 rc = sas_execute_ata_cmd(device, fis, -1); 1325 if (rc != TMF_RESP_FUNC_COMPLETE) 1326 break; 1327 } 1328 1329 if (rc == TMF_RESP_FUNC_COMPLETE) { 1330 ata_for_each_link(link, ap, EDGE) { 1331 int pmp = sata_srst_pmp(link); 1332 1333 hisi_sas_fill_ata_reset_cmd(link->device, 0, pmp, fis); 1334 rc = sas_execute_ata_cmd(device, fis, -1); 1335 if (rc != TMF_RESP_FUNC_COMPLETE) 1336 dev_err(dev, "ata disk %016llx de-reset failed\n", 1337 SAS_ADDR(device->sas_addr)); 1338 } 1339 } else { 1340 dev_err(dev, "ata disk %016llx reset failed\n", 1341 SAS_ADDR(device->sas_addr)); 1342 } 1343 1344 if (rc == TMF_RESP_FUNC_COMPLETE) 1345 hisi_sas_release_task(hisi_hba, device); 1346 1347 return rc; 1348 } 1349 1350 static void hisi_sas_refresh_port_id(struct hisi_hba *hisi_hba) 1351 { 1352 u32 state = hisi_hba->hw->get_phys_state(hisi_hba); 1353 int i; 1354 1355 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 1356 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; 1357 struct domain_device *device = sas_dev->sas_device; 1358 struct asd_sas_port *sas_port; 1359 struct hisi_sas_port *port; 1360 struct hisi_sas_phy *phy = NULL; 1361 struct asd_sas_phy *sas_phy; 1362 1363 if ((sas_dev->dev_type == SAS_PHY_UNUSED) 1364 || !device || !device->port) 1365 continue; 1366 1367 sas_port = device->port; 1368 port = to_hisi_sas_port(sas_port); 1369 1370 spin_lock(&sas_port->phy_list_lock); 1371 list_for_each_entry(sas_phy, &sas_port->phy_list, port_phy_el) 1372 if (state & BIT(sas_phy->id)) { 1373 phy = sas_phy->lldd_phy; 1374 break; 1375 } 1376 spin_unlock(&sas_port->phy_list_lock); 1377 1378 if (phy) { 1379 port->id = phy->port_id; 1380 1381 /* Update linkrate of directly attached device. */ 1382 if (!device->parent) 1383 device->linkrate = phy->sas_phy.linkrate; 1384 1385 hisi_hba->hw->setup_itct(hisi_hba, sas_dev); 1386 } else if (!port->port_attached) 1387 port->id = 0xff; 1388 } 1389 } 1390 1391 static void hisi_sas_rescan_topology(struct hisi_hba *hisi_hba, u32 state) 1392 { 1393 struct asd_sas_port *_sas_port = NULL; 1394 int phy_no; 1395 1396 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { 1397 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 1398 struct asd_sas_phy *sas_phy = &phy->sas_phy; 1399 struct asd_sas_port *sas_port = sas_phy->port; 1400 bool do_port_check = _sas_port != sas_port; 1401 1402 if (!sas_phy->phy->enabled) 1403 continue; 1404 1405 /* Report PHY state change to libsas */ 1406 if (state & BIT(phy_no)) { 1407 if (do_port_check && sas_port && sas_port->port_dev) { 1408 struct domain_device *dev = sas_port->port_dev; 1409 1410 _sas_port = sas_port; 1411 1412 if (dev_is_expander(dev->dev_type)) 1413 sas_notify_port_event(sas_phy, 1414 PORTE_BROADCAST_RCVD, 1415 GFP_KERNEL); 1416 } 1417 } else { 1418 hisi_sas_phy_down(hisi_hba, phy_no, 0, GFP_KERNEL); 1419 } 1420 } 1421 } 1422 1423 static void hisi_sas_reset_init_all_devices(struct hisi_hba *hisi_hba) 1424 { 1425 struct hisi_sas_device *sas_dev; 1426 struct domain_device *device; 1427 int i; 1428 1429 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 1430 sas_dev = &hisi_hba->devices[i]; 1431 device = sas_dev->sas_device; 1432 1433 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device) 1434 continue; 1435 1436 hisi_sas_init_device(device); 1437 } 1438 } 1439 1440 static void hisi_sas_send_ata_reset_each_phy(struct hisi_hba *hisi_hba, 1441 struct asd_sas_port *sas_port, 1442 struct domain_device *device) 1443 { 1444 struct ata_port *ap = device->sata_dev.ap; 1445 struct device *dev = hisi_hba->dev; 1446 int rc = TMF_RESP_FUNC_FAILED; 1447 struct ata_link *link; 1448 u8 fis[20] = {0}; 1449 int i; 1450 1451 for (i = 0; i < hisi_hba->n_phy; i++) { 1452 if (!(sas_port->phy_mask & BIT(i))) 1453 continue; 1454 1455 ata_for_each_link(link, ap, EDGE) { 1456 int pmp = sata_srst_pmp(link); 1457 1458 hisi_sas_fill_ata_reset_cmd(link->device, 1, pmp, fis); 1459 rc = sas_execute_ata_cmd(device, fis, i); 1460 if (rc != TMF_RESP_FUNC_COMPLETE) { 1461 dev_err(dev, "phy%d ata reset failed rc=%d\n", 1462 i, rc); 1463 break; 1464 } 1465 } 1466 } 1467 } 1468 1469 static void hisi_sas_terminate_stp_reject(struct hisi_hba *hisi_hba) 1470 { 1471 struct device *dev = hisi_hba->dev; 1472 int port_no, rc, i; 1473 1474 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 1475 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; 1476 struct domain_device *device = sas_dev->sas_device; 1477 1478 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device) 1479 continue; 1480 1481 rc = hisi_sas_internal_task_abort_dev(sas_dev, false); 1482 if (rc < 0) 1483 dev_err(dev, "STP reject: abort dev failed %d\n", rc); 1484 } 1485 1486 for (port_no = 0; port_no < hisi_hba->n_phy; port_no++) { 1487 struct hisi_sas_port *port = &hisi_hba->port[port_no]; 1488 struct asd_sas_port *sas_port = &port->sas_port; 1489 struct domain_device *port_dev = sas_port->port_dev; 1490 struct domain_device *device; 1491 1492 if (!port_dev || !dev_is_expander(port_dev->dev_type)) 1493 continue; 1494 1495 /* Try to find a SATA device */ 1496 list_for_each_entry(device, &sas_port->dev_list, 1497 dev_list_node) { 1498 if (dev_is_sata(device)) { 1499 hisi_sas_send_ata_reset_each_phy(hisi_hba, 1500 sas_port, 1501 device); 1502 break; 1503 } 1504 } 1505 } 1506 } 1507 1508 void hisi_sas_controller_reset_prepare(struct hisi_hba *hisi_hba) 1509 { 1510 struct Scsi_Host *shost = hisi_hba->shost; 1511 1512 hisi_hba->phy_state = hisi_hba->hw->get_phys_state(hisi_hba); 1513 1514 scsi_block_requests(shost); 1515 hisi_hba->hw->wait_cmds_complete_timeout(hisi_hba, 100, 5000); 1516 1517 del_timer_sync(&hisi_hba->timer); 1518 1519 set_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); 1520 } 1521 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_prepare); 1522 1523 static void hisi_sas_async_init_wait_phyup(void *data, async_cookie_t cookie) 1524 { 1525 struct hisi_sas_phy *phy = data; 1526 struct hisi_hba *hisi_hba = phy->hisi_hba; 1527 struct device *dev = hisi_hba->dev; 1528 DECLARE_COMPLETION_ONSTACK(completion); 1529 int phy_no = phy->sas_phy.id; 1530 1531 phy->reset_completion = &completion; 1532 hisi_sas_phy_enable(hisi_hba, phy_no, 1); 1533 if (!wait_for_completion_timeout(&completion, 1534 HISI_SAS_WAIT_PHYUP_TIMEOUT)) 1535 dev_warn(dev, "phy%d wait phyup timed out\n", phy_no); 1536 1537 phy->reset_completion = NULL; 1538 } 1539 1540 void hisi_sas_controller_reset_done(struct hisi_hba *hisi_hba) 1541 { 1542 struct Scsi_Host *shost = hisi_hba->shost; 1543 ASYNC_DOMAIN_EXCLUSIVE(async); 1544 int phy_no; 1545 1546 /* Init and wait for PHYs to come up and all libsas event finished. */ 1547 for (phy_no = 0; phy_no < hisi_hba->n_phy; phy_no++) { 1548 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 1549 1550 if (!(hisi_hba->phy_state & BIT(phy_no))) 1551 continue; 1552 1553 async_schedule_domain(hisi_sas_async_init_wait_phyup, 1554 phy, &async); 1555 } 1556 1557 async_synchronize_full_domain(&async); 1558 hisi_sas_refresh_port_id(hisi_hba); 1559 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); 1560 1561 if (hisi_hba->reject_stp_links_msk) 1562 hisi_sas_terminate_stp_reject(hisi_hba); 1563 hisi_sas_reset_init_all_devices(hisi_hba); 1564 scsi_unblock_requests(shost); 1565 clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags); 1566 up(&hisi_hba->sem); 1567 1568 hisi_sas_rescan_topology(hisi_hba, hisi_hba->phy_state); 1569 } 1570 EXPORT_SYMBOL_GPL(hisi_sas_controller_reset_done); 1571 1572 static int hisi_sas_controller_prereset(struct hisi_hba *hisi_hba) 1573 { 1574 if (!hisi_hba->hw->soft_reset) 1575 return -1; 1576 1577 down(&hisi_hba->sem); 1578 if (test_and_set_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) { 1579 up(&hisi_hba->sem); 1580 return -1; 1581 } 1582 1583 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct) 1584 hisi_hba->hw->debugfs_snapshot_regs(hisi_hba); 1585 1586 return 0; 1587 } 1588 1589 static int hisi_sas_controller_reset(struct hisi_hba *hisi_hba) 1590 { 1591 struct device *dev = hisi_hba->dev; 1592 struct Scsi_Host *shost = hisi_hba->shost; 1593 int rc; 1594 1595 dev_info(dev, "controller resetting...\n"); 1596 hisi_sas_controller_reset_prepare(hisi_hba); 1597 1598 rc = hisi_hba->hw->soft_reset(hisi_hba); 1599 if (rc) { 1600 dev_warn(dev, "controller reset failed (%d)\n", rc); 1601 clear_bit(HISI_SAS_REJECT_CMD_BIT, &hisi_hba->flags); 1602 up(&hisi_hba->sem); 1603 scsi_unblock_requests(shost); 1604 clear_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags); 1605 return rc; 1606 } 1607 clear_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags); 1608 1609 hisi_sas_controller_reset_done(hisi_hba); 1610 dev_info(dev, "controller reset complete\n"); 1611 1612 return 0; 1613 } 1614 1615 static int hisi_sas_abort_task(struct sas_task *task) 1616 { 1617 struct hisi_sas_internal_abort_data internal_abort_data = { false }; 1618 struct domain_device *device = task->dev; 1619 struct hisi_sas_device *sas_dev = device->lldd_dev; 1620 struct hisi_sas_slot *slot = task->lldd_task; 1621 struct hisi_hba *hisi_hba; 1622 struct device *dev; 1623 int rc = TMF_RESP_FUNC_FAILED; 1624 unsigned long flags; 1625 1626 if (!sas_dev) 1627 return TMF_RESP_FUNC_FAILED; 1628 1629 hisi_hba = dev_to_hisi_hba(task->dev); 1630 dev = hisi_hba->dev; 1631 1632 spin_lock_irqsave(&task->task_state_lock, flags); 1633 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1634 struct hisi_sas_cq *cq; 1635 1636 if (slot) { 1637 /* 1638 * sync irq or poll queue to avoid free'ing task 1639 * before using task in IO completion 1640 */ 1641 cq = &hisi_hba->cq[slot->dlvry_queue]; 1642 hisi_sas_sync_cq(cq); 1643 } 1644 spin_unlock_irqrestore(&task->task_state_lock, flags); 1645 rc = TMF_RESP_FUNC_COMPLETE; 1646 goto out; 1647 } 1648 task->task_state_flags |= SAS_TASK_STATE_ABORTED; 1649 spin_unlock_irqrestore(&task->task_state_lock, flags); 1650 1651 if (slot && task->task_proto & SAS_PROTOCOL_SSP) { 1652 u16 tag = slot->idx; 1653 int rc2; 1654 1655 rc = sas_abort_task(task, tag); 1656 rc2 = sas_execute_internal_abort_single(device, tag, 1657 slot->dlvry_queue, &internal_abort_data); 1658 if (rc2 < 0) { 1659 dev_err(dev, "abort task: internal abort (%d)\n", rc2); 1660 return TMF_RESP_FUNC_FAILED; 1661 } 1662 1663 /* 1664 * If the TMF finds that the IO is not in the device and also 1665 * the internal abort does not succeed, then it is safe to 1666 * free the slot. 1667 * Note: if the internal abort succeeds then the slot 1668 * will have already been completed 1669 */ 1670 if (rc == TMF_RESP_FUNC_COMPLETE && rc2 != TMF_RESP_FUNC_SUCC) { 1671 if (task->lldd_task) 1672 hisi_sas_do_release_task(hisi_hba, task, slot, true); 1673 } 1674 } else if (task->task_proto & SAS_PROTOCOL_SATA || 1675 task->task_proto & SAS_PROTOCOL_STP) { 1676 if (task->dev->dev_type == SAS_SATA_DEV) { 1677 struct ata_queued_cmd *qc = task->uldd_task; 1678 1679 rc = hisi_sas_internal_task_abort_dev(sas_dev, false); 1680 if (rc < 0) { 1681 dev_err(dev, "abort task: internal abort failed\n"); 1682 goto out; 1683 } 1684 hisi_sas_dereg_device(hisi_hba, device); 1685 1686 /* 1687 * If an ATA internal command times out in ATA EH, it 1688 * need to execute soft reset, so check the scsicmd 1689 */ 1690 if ((sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR) && 1691 qc && qc->scsicmd) { 1692 hisi_sas_do_release_task(hisi_hba, task, slot, true); 1693 rc = TMF_RESP_FUNC_COMPLETE; 1694 } else { 1695 rc = hisi_sas_softreset_ata_disk(device); 1696 } 1697 } 1698 } else if (slot && task->task_proto & SAS_PROTOCOL_SMP) { 1699 /* SMP */ 1700 u32 tag = slot->idx; 1701 struct hisi_sas_cq *cq = &hisi_hba->cq[slot->dlvry_queue]; 1702 1703 rc = sas_execute_internal_abort_single(device, 1704 tag, slot->dlvry_queue, 1705 &internal_abort_data); 1706 if (((rc < 0) || (rc == TMF_RESP_FUNC_FAILED)) && 1707 task->lldd_task) { 1708 /* 1709 * sync irq or poll queue to avoid free'ing task 1710 * before using task in IO completion 1711 */ 1712 hisi_sas_sync_cq(cq); 1713 slot->task = NULL; 1714 } 1715 } 1716 1717 out: 1718 if (rc != TMF_RESP_FUNC_COMPLETE) 1719 dev_notice(dev, "abort task: rc=%d\n", rc); 1720 return rc; 1721 } 1722 1723 static int hisi_sas_abort_task_set(struct domain_device *device, u8 *lun) 1724 { 1725 struct hisi_sas_device *sas_dev = device->lldd_dev; 1726 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1727 struct device *dev = hisi_hba->dev; 1728 int rc; 1729 1730 rc = hisi_sas_internal_task_abort_dev(sas_dev, false); 1731 if (rc < 0) { 1732 dev_err(dev, "abort task set: internal abort rc=%d\n", rc); 1733 return TMF_RESP_FUNC_FAILED; 1734 } 1735 hisi_sas_dereg_device(hisi_hba, device); 1736 1737 rc = sas_abort_task_set(device, lun); 1738 if (rc == TMF_RESP_FUNC_COMPLETE) 1739 hisi_sas_release_task(hisi_hba, device); 1740 1741 return rc; 1742 } 1743 1744 static int hisi_sas_debug_I_T_nexus_reset(struct domain_device *device) 1745 { 1746 struct sas_phy *local_phy = sas_get_local_phy(device); 1747 struct hisi_sas_device *sas_dev = device->lldd_dev; 1748 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1749 struct sas_ha_struct *sas_ha = &hisi_hba->sha; 1750 int rc, reset_type; 1751 1752 if (!local_phy->enabled) { 1753 sas_put_local_phy(local_phy); 1754 return -ENODEV; 1755 } 1756 1757 if (scsi_is_sas_phy_local(local_phy)) { 1758 struct asd_sas_phy *sas_phy = 1759 sas_ha->sas_phy[local_phy->number]; 1760 struct hisi_sas_phy *phy = 1761 container_of(sas_phy, struct hisi_sas_phy, sas_phy); 1762 unsigned long flags; 1763 1764 spin_lock_irqsave(&phy->lock, flags); 1765 phy->in_reset = 1; 1766 spin_unlock_irqrestore(&phy->lock, flags); 1767 } 1768 1769 reset_type = (sas_dev->dev_status == HISI_SAS_DEV_INIT || 1770 !dev_is_sata(device)) ? true : false; 1771 1772 rc = sas_phy_reset(local_phy, reset_type); 1773 sas_put_local_phy(local_phy); 1774 1775 if (scsi_is_sas_phy_local(local_phy)) { 1776 struct asd_sas_phy *sas_phy = 1777 sas_ha->sas_phy[local_phy->number]; 1778 struct hisi_sas_phy *phy = 1779 container_of(sas_phy, struct hisi_sas_phy, sas_phy); 1780 unsigned long flags; 1781 1782 spin_lock_irqsave(&phy->lock, flags); 1783 phy->in_reset = 0; 1784 spin_unlock_irqrestore(&phy->lock, flags); 1785 1786 /* report PHY down if timed out */ 1787 if (rc == -ETIMEDOUT) 1788 hisi_sas_phy_down(hisi_hba, sas_phy->id, 0, GFP_KERNEL); 1789 return rc; 1790 } 1791 1792 /* Remote phy */ 1793 if (rc) 1794 return rc; 1795 1796 if (dev_is_sata(device)) { 1797 struct ata_link *link = &device->sata_dev.ap->link; 1798 1799 rc = ata_wait_after_reset(link, HISI_SAS_WAIT_PHYUP_TIMEOUT, 1800 smp_ata_check_ready_type); 1801 } else { 1802 msleep(2000); 1803 } 1804 1805 return rc; 1806 } 1807 1808 static int hisi_sas_I_T_nexus_reset(struct domain_device *device) 1809 { 1810 struct hisi_sas_device *sas_dev = device->lldd_dev; 1811 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1812 struct device *dev = hisi_hba->dev; 1813 int rc; 1814 1815 if (sas_dev->dev_status == HISI_SAS_DEV_NCQ_ERR) 1816 sas_dev->dev_status = HISI_SAS_DEV_NORMAL; 1817 1818 rc = hisi_sas_internal_task_abort_dev(sas_dev, false); 1819 if (rc < 0) { 1820 dev_err(dev, "I_T nexus reset: internal abort (%d)\n", rc); 1821 return TMF_RESP_FUNC_FAILED; 1822 } 1823 hisi_sas_dereg_device(hisi_hba, device); 1824 1825 rc = hisi_sas_debug_I_T_nexus_reset(device); 1826 if (rc == TMF_RESP_FUNC_COMPLETE && dev_is_sata(device)) { 1827 struct sas_phy *local_phy; 1828 1829 rc = hisi_sas_softreset_ata_disk(device); 1830 switch (rc) { 1831 case -ECOMM: 1832 rc = -ENODEV; 1833 break; 1834 case TMF_RESP_FUNC_FAILED: 1835 case -EMSGSIZE: 1836 case -EIO: 1837 local_phy = sas_get_local_phy(device); 1838 rc = sas_phy_enable(local_phy, 0); 1839 if (!rc) { 1840 local_phy->enabled = 0; 1841 dev_err(dev, "Disabled local phy of ATA disk %016llx due to softreset fail (%d)\n", 1842 SAS_ADDR(device->sas_addr), rc); 1843 rc = -ENODEV; 1844 } 1845 sas_put_local_phy(local_phy); 1846 break; 1847 default: 1848 break; 1849 } 1850 } 1851 1852 if ((rc == TMF_RESP_FUNC_COMPLETE) || (rc == -ENODEV)) 1853 hisi_sas_release_task(hisi_hba, device); 1854 1855 return rc; 1856 } 1857 1858 static int hisi_sas_lu_reset(struct domain_device *device, u8 *lun) 1859 { 1860 struct hisi_sas_device *sas_dev = device->lldd_dev; 1861 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1862 struct device *dev = hisi_hba->dev; 1863 int rc = TMF_RESP_FUNC_FAILED; 1864 1865 /* Clear internal IO and then lu reset */ 1866 rc = hisi_sas_internal_task_abort_dev(sas_dev, false); 1867 if (rc < 0) { 1868 dev_err(dev, "lu_reset: internal abort failed\n"); 1869 goto out; 1870 } 1871 hisi_sas_dereg_device(hisi_hba, device); 1872 1873 if (dev_is_sata(device)) { 1874 struct sas_phy *phy; 1875 1876 phy = sas_get_local_phy(device); 1877 1878 rc = sas_phy_reset(phy, true); 1879 1880 if (rc == 0) 1881 hisi_sas_release_task(hisi_hba, device); 1882 sas_put_local_phy(phy); 1883 } else { 1884 rc = sas_lu_reset(device, lun); 1885 if (rc == TMF_RESP_FUNC_COMPLETE) 1886 hisi_sas_release_task(hisi_hba, device); 1887 } 1888 out: 1889 if (rc != TMF_RESP_FUNC_COMPLETE) 1890 dev_err(dev, "lu_reset: for device[%d]:rc= %d\n", 1891 sas_dev->device_id, rc); 1892 return rc; 1893 } 1894 1895 static void hisi_sas_async_I_T_nexus_reset(void *data, async_cookie_t cookie) 1896 { 1897 struct domain_device *device = data; 1898 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1899 int rc; 1900 1901 rc = hisi_sas_debug_I_T_nexus_reset(device); 1902 if (rc != TMF_RESP_FUNC_COMPLETE) 1903 dev_info(hisi_hba->dev, "I_T_nexus reset fail for dev:%016llx rc=%d\n", 1904 SAS_ADDR(device->sas_addr), rc); 1905 } 1906 1907 static int hisi_sas_clear_nexus_ha(struct sas_ha_struct *sas_ha) 1908 { 1909 struct hisi_hba *hisi_hba = sas_ha->lldd_ha; 1910 HISI_SAS_DECLARE_RST_WORK_ON_STACK(r); 1911 ASYNC_DOMAIN_EXCLUSIVE(async); 1912 int i; 1913 1914 queue_work(hisi_hba->wq, &r.work); 1915 wait_for_completion(r.completion); 1916 if (!r.done) 1917 return TMF_RESP_FUNC_FAILED; 1918 1919 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 1920 struct hisi_sas_device *sas_dev = &hisi_hba->devices[i]; 1921 struct domain_device *device = sas_dev->sas_device; 1922 1923 if ((sas_dev->dev_type == SAS_PHY_UNUSED) || !device || 1924 dev_is_expander(device->dev_type)) 1925 continue; 1926 1927 async_schedule_domain(hisi_sas_async_I_T_nexus_reset, 1928 device, &async); 1929 } 1930 1931 async_synchronize_full_domain(&async); 1932 hisi_sas_release_tasks(hisi_hba); 1933 1934 return TMF_RESP_FUNC_COMPLETE; 1935 } 1936 1937 static int hisi_sas_query_task(struct sas_task *task) 1938 { 1939 int rc = TMF_RESP_FUNC_FAILED; 1940 1941 if (task->lldd_task && task->task_proto & SAS_PROTOCOL_SSP) { 1942 struct hisi_sas_slot *slot = task->lldd_task; 1943 u32 tag = slot->idx; 1944 1945 rc = sas_query_task(task, tag); 1946 switch (rc) { 1947 /* The task is still in Lun, release it then */ 1948 case TMF_RESP_FUNC_SUCC: 1949 /* The task is not in Lun or failed, reset the phy */ 1950 case TMF_RESP_FUNC_FAILED: 1951 case TMF_RESP_FUNC_COMPLETE: 1952 break; 1953 default: 1954 rc = TMF_RESP_FUNC_FAILED; 1955 break; 1956 } 1957 } 1958 return rc; 1959 } 1960 1961 static bool hisi_sas_internal_abort_timeout(struct sas_task *task, 1962 void *data) 1963 { 1964 struct domain_device *device = task->dev; 1965 struct hisi_hba *hisi_hba = dev_to_hisi_hba(device); 1966 struct hisi_sas_internal_abort_data *timeout = data; 1967 1968 if (hisi_sas_debugfs_enable && hisi_hba->debugfs_itct[0].itct) 1969 queue_work(hisi_hba->wq, &hisi_hba->debugfs_work); 1970 1971 if (task->task_state_flags & SAS_TASK_STATE_DONE) { 1972 pr_err("Internal abort: timeout %016llx\n", 1973 SAS_ADDR(device->sas_addr)); 1974 } else { 1975 struct hisi_sas_slot *slot = task->lldd_task; 1976 1977 set_bit(HISI_SAS_HW_FAULT_BIT, &hisi_hba->flags); 1978 1979 if (slot) { 1980 struct hisi_sas_cq *cq = 1981 &hisi_hba->cq[slot->dlvry_queue]; 1982 /* 1983 * sync irq or poll queue to avoid free'ing task 1984 * before using task in IO completion 1985 */ 1986 hisi_sas_sync_cq(cq); 1987 slot->task = NULL; 1988 } 1989 1990 if (timeout->rst_ha_timeout) { 1991 pr_err("Internal abort: timeout and not done %016llx. Queuing reset.\n", 1992 SAS_ADDR(device->sas_addr)); 1993 queue_work(hisi_hba->wq, &hisi_hba->rst_work); 1994 } else { 1995 pr_err("Internal abort: timeout and not done %016llx.\n", 1996 SAS_ADDR(device->sas_addr)); 1997 } 1998 1999 return true; 2000 } 2001 2002 return false; 2003 } 2004 2005 static void hisi_sas_port_formed(struct asd_sas_phy *sas_phy) 2006 { 2007 hisi_sas_port_notify_formed(sas_phy); 2008 } 2009 2010 static int hisi_sas_write_gpio(struct sas_ha_struct *sha, u8 reg_type, 2011 u8 reg_index, u8 reg_count, u8 *write_data) 2012 { 2013 struct hisi_hba *hisi_hba = sha->lldd_ha; 2014 2015 if (!hisi_hba->hw->write_gpio) 2016 return -EOPNOTSUPP; 2017 2018 return hisi_hba->hw->write_gpio(hisi_hba, reg_type, 2019 reg_index, reg_count, write_data); 2020 } 2021 2022 static void hisi_sas_phy_disconnected(struct hisi_sas_phy *phy) 2023 { 2024 struct asd_sas_phy *sas_phy = &phy->sas_phy; 2025 struct sas_phy *sphy = sas_phy->phy; 2026 unsigned long flags; 2027 2028 phy->phy_attached = 0; 2029 phy->phy_type = 0; 2030 phy->port = NULL; 2031 2032 spin_lock_irqsave(&phy->lock, flags); 2033 if (phy->enable) 2034 sphy->negotiated_linkrate = SAS_LINK_RATE_UNKNOWN; 2035 else 2036 sphy->negotiated_linkrate = SAS_PHY_DISABLED; 2037 spin_unlock_irqrestore(&phy->lock, flags); 2038 } 2039 2040 void hisi_sas_phy_down(struct hisi_hba *hisi_hba, int phy_no, int rdy, 2041 gfp_t gfp_flags) 2042 { 2043 struct hisi_sas_phy *phy = &hisi_hba->phy[phy_no]; 2044 struct asd_sas_phy *sas_phy = &phy->sas_phy; 2045 struct device *dev = hisi_hba->dev; 2046 2047 if (rdy) { 2048 /* Phy down but ready */ 2049 hisi_sas_bytes_dmaed(hisi_hba, phy_no, gfp_flags); 2050 hisi_sas_port_notify_formed(sas_phy); 2051 } else { 2052 struct hisi_sas_port *port = phy->port; 2053 2054 if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags) || 2055 phy->in_reset) { 2056 dev_info(dev, "ignore flutter phy%d down\n", phy_no); 2057 return; 2058 } 2059 /* Phy down and not ready */ 2060 sas_notify_phy_event(sas_phy, PHYE_LOSS_OF_SIGNAL, gfp_flags); 2061 sas_phy_disconnected(sas_phy); 2062 2063 if (port) { 2064 if (phy->phy_type & PORT_TYPE_SAS) { 2065 int port_id = port->id; 2066 2067 if (!hisi_hba->hw->get_wideport_bitmap(hisi_hba, 2068 port_id)) 2069 port->port_attached = 0; 2070 } else if (phy->phy_type & PORT_TYPE_SATA) 2071 port->port_attached = 0; 2072 } 2073 hisi_sas_phy_disconnected(phy); 2074 } 2075 } 2076 EXPORT_SYMBOL_GPL(hisi_sas_phy_down); 2077 2078 void hisi_sas_phy_bcast(struct hisi_sas_phy *phy) 2079 { 2080 struct asd_sas_phy *sas_phy = &phy->sas_phy; 2081 struct hisi_hba *hisi_hba = phy->hisi_hba; 2082 2083 if (test_bit(HISI_SAS_RESETTING_BIT, &hisi_hba->flags)) 2084 return; 2085 2086 sas_notify_port_event(sas_phy, PORTE_BROADCAST_RCVD, GFP_ATOMIC); 2087 } 2088 EXPORT_SYMBOL_GPL(hisi_sas_phy_bcast); 2089 2090 int hisi_sas_host_reset(struct Scsi_Host *shost, int reset_type) 2091 { 2092 struct hisi_hba *hisi_hba = shost_priv(shost); 2093 2094 if (reset_type != SCSI_ADAPTER_RESET) 2095 return -EOPNOTSUPP; 2096 2097 queue_work(hisi_hba->wq, &hisi_hba->rst_work); 2098 2099 return 0; 2100 } 2101 EXPORT_SYMBOL_GPL(hisi_sas_host_reset); 2102 2103 struct scsi_transport_template *hisi_sas_stt; 2104 EXPORT_SYMBOL_GPL(hisi_sas_stt); 2105 2106 static struct sas_domain_function_template hisi_sas_transport_ops = { 2107 .lldd_dev_found = hisi_sas_dev_found, 2108 .lldd_dev_gone = hisi_sas_dev_gone, 2109 .lldd_execute_task = hisi_sas_queue_command, 2110 .lldd_control_phy = hisi_sas_control_phy, 2111 .lldd_abort_task = hisi_sas_abort_task, 2112 .lldd_abort_task_set = hisi_sas_abort_task_set, 2113 .lldd_I_T_nexus_reset = hisi_sas_I_T_nexus_reset, 2114 .lldd_lu_reset = hisi_sas_lu_reset, 2115 .lldd_query_task = hisi_sas_query_task, 2116 .lldd_clear_nexus_ha = hisi_sas_clear_nexus_ha, 2117 .lldd_port_formed = hisi_sas_port_formed, 2118 .lldd_write_gpio = hisi_sas_write_gpio, 2119 .lldd_tmf_aborted = hisi_sas_tmf_aborted, 2120 .lldd_abort_timeout = hisi_sas_internal_abort_timeout, 2121 }; 2122 2123 void hisi_sas_init_mem(struct hisi_hba *hisi_hba) 2124 { 2125 int i, s, j, max_command_entries = HISI_SAS_MAX_COMMANDS; 2126 struct hisi_sas_breakpoint *sata_breakpoint = hisi_hba->sata_breakpoint; 2127 2128 for (i = 0; i < hisi_hba->queue_count; i++) { 2129 struct hisi_sas_cq *cq = &hisi_hba->cq[i]; 2130 struct hisi_sas_dq *dq = &hisi_hba->dq[i]; 2131 struct hisi_sas_cmd_hdr *cmd_hdr = hisi_hba->cmd_hdr[i]; 2132 2133 s = sizeof(struct hisi_sas_cmd_hdr); 2134 for (j = 0; j < HISI_SAS_QUEUE_SLOTS; j++) 2135 memset(&cmd_hdr[j], 0, s); 2136 2137 dq->wr_point = 0; 2138 2139 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; 2140 memset(hisi_hba->complete_hdr[i], 0, s); 2141 cq->rd_point = 0; 2142 } 2143 2144 s = sizeof(struct hisi_sas_initial_fis) * hisi_hba->n_phy; 2145 memset(hisi_hba->initial_fis, 0, s); 2146 2147 s = max_command_entries * sizeof(struct hisi_sas_iost); 2148 memset(hisi_hba->iost, 0, s); 2149 2150 s = max_command_entries * sizeof(struct hisi_sas_breakpoint); 2151 memset(hisi_hba->breakpoint, 0, s); 2152 2153 s = sizeof(struct hisi_sas_sata_breakpoint); 2154 for (j = 0; j < HISI_SAS_MAX_ITCT_ENTRIES; j++) 2155 memset(&sata_breakpoint[j], 0, s); 2156 } 2157 EXPORT_SYMBOL_GPL(hisi_sas_init_mem); 2158 2159 int hisi_sas_alloc(struct hisi_hba *hisi_hba) 2160 { 2161 struct device *dev = hisi_hba->dev; 2162 int i, j, s, max_command_entries = HISI_SAS_MAX_COMMANDS; 2163 int max_command_entries_ru, sz_slot_buf_ru; 2164 int blk_cnt, slots_per_blk; 2165 2166 sema_init(&hisi_hba->sem, 1); 2167 spin_lock_init(&hisi_hba->lock); 2168 for (i = 0; i < hisi_hba->n_phy; i++) { 2169 hisi_sas_phy_init(hisi_hba, i); 2170 hisi_hba->port[i].port_attached = 0; 2171 hisi_hba->port[i].id = -1; 2172 } 2173 2174 for (i = 0; i < HISI_SAS_MAX_DEVICES; i++) { 2175 hisi_hba->devices[i].dev_type = SAS_PHY_UNUSED; 2176 hisi_hba->devices[i].device_id = i; 2177 hisi_hba->devices[i].dev_status = HISI_SAS_DEV_INIT; 2178 } 2179 2180 for (i = 0; i < hisi_hba->queue_count; i++) { 2181 struct hisi_sas_cq *cq = &hisi_hba->cq[i]; 2182 struct hisi_sas_dq *dq = &hisi_hba->dq[i]; 2183 2184 /* Completion queue structure */ 2185 cq->id = i; 2186 cq->hisi_hba = hisi_hba; 2187 spin_lock_init(&cq->poll_lock); 2188 2189 /* Delivery queue structure */ 2190 spin_lock_init(&dq->lock); 2191 INIT_LIST_HEAD(&dq->list); 2192 dq->id = i; 2193 dq->hisi_hba = hisi_hba; 2194 2195 /* Delivery queue */ 2196 s = sizeof(struct hisi_sas_cmd_hdr) * HISI_SAS_QUEUE_SLOTS; 2197 hisi_hba->cmd_hdr[i] = dmam_alloc_coherent(dev, s, 2198 &hisi_hba->cmd_hdr_dma[i], 2199 GFP_KERNEL); 2200 if (!hisi_hba->cmd_hdr[i]) 2201 goto err_out; 2202 2203 /* Completion queue */ 2204 s = hisi_hba->hw->complete_hdr_size * HISI_SAS_QUEUE_SLOTS; 2205 hisi_hba->complete_hdr[i] = dmam_alloc_coherent(dev, s, 2206 &hisi_hba->complete_hdr_dma[i], 2207 GFP_KERNEL); 2208 if (!hisi_hba->complete_hdr[i]) 2209 goto err_out; 2210 } 2211 2212 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_itct); 2213 hisi_hba->itct = dmam_alloc_coherent(dev, s, &hisi_hba->itct_dma, 2214 GFP_KERNEL); 2215 if (!hisi_hba->itct) 2216 goto err_out; 2217 2218 hisi_hba->slot_info = devm_kcalloc(dev, max_command_entries, 2219 sizeof(struct hisi_sas_slot), 2220 GFP_KERNEL); 2221 if (!hisi_hba->slot_info) 2222 goto err_out; 2223 2224 /* roundup to avoid overly large block size */ 2225 max_command_entries_ru = roundup(max_command_entries, 64); 2226 if (hisi_hba->prot_mask & HISI_SAS_DIX_PROT_MASK) 2227 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_dif_buf_table); 2228 else 2229 sz_slot_buf_ru = sizeof(struct hisi_sas_slot_buf_table); 2230 sz_slot_buf_ru = roundup(sz_slot_buf_ru, 64); 2231 s = max(lcm(max_command_entries_ru, sz_slot_buf_ru), PAGE_SIZE); 2232 blk_cnt = (max_command_entries_ru * sz_slot_buf_ru) / s; 2233 slots_per_blk = s / sz_slot_buf_ru; 2234 2235 for (i = 0; i < blk_cnt; i++) { 2236 int slot_index = i * slots_per_blk; 2237 dma_addr_t buf_dma; 2238 void *buf; 2239 2240 buf = dmam_alloc_coherent(dev, s, &buf_dma, 2241 GFP_KERNEL); 2242 if (!buf) 2243 goto err_out; 2244 2245 for (j = 0; j < slots_per_blk; j++, slot_index++) { 2246 struct hisi_sas_slot *slot; 2247 2248 slot = &hisi_hba->slot_info[slot_index]; 2249 slot->buf = buf; 2250 slot->buf_dma = buf_dma; 2251 slot->idx = slot_index; 2252 2253 buf += sz_slot_buf_ru; 2254 buf_dma += sz_slot_buf_ru; 2255 } 2256 } 2257 2258 s = max_command_entries * sizeof(struct hisi_sas_iost); 2259 hisi_hba->iost = dmam_alloc_coherent(dev, s, &hisi_hba->iost_dma, 2260 GFP_KERNEL); 2261 if (!hisi_hba->iost) 2262 goto err_out; 2263 2264 s = max_command_entries * sizeof(struct hisi_sas_breakpoint); 2265 hisi_hba->breakpoint = dmam_alloc_coherent(dev, s, 2266 &hisi_hba->breakpoint_dma, 2267 GFP_KERNEL); 2268 if (!hisi_hba->breakpoint) 2269 goto err_out; 2270 2271 s = hisi_hba->slot_index_count = max_command_entries; 2272 hisi_hba->slot_index_tags = devm_bitmap_zalloc(dev, s, GFP_KERNEL); 2273 if (!hisi_hba->slot_index_tags) 2274 goto err_out; 2275 2276 s = sizeof(struct hisi_sas_initial_fis) * HISI_SAS_MAX_PHYS; 2277 hisi_hba->initial_fis = dmam_alloc_coherent(dev, s, 2278 &hisi_hba->initial_fis_dma, 2279 GFP_KERNEL); 2280 if (!hisi_hba->initial_fis) 2281 goto err_out; 2282 2283 s = HISI_SAS_MAX_ITCT_ENTRIES * sizeof(struct hisi_sas_sata_breakpoint); 2284 hisi_hba->sata_breakpoint = dmam_alloc_coherent(dev, s, 2285 &hisi_hba->sata_breakpoint_dma, 2286 GFP_KERNEL); 2287 if (!hisi_hba->sata_breakpoint) 2288 goto err_out; 2289 2290 hisi_hba->last_slot_index = 0; 2291 2292 hisi_hba->wq = create_singlethread_workqueue(dev_name(dev)); 2293 if (!hisi_hba->wq) { 2294 dev_err(dev, "sas_alloc: failed to create workqueue\n"); 2295 goto err_out; 2296 } 2297 2298 return 0; 2299 err_out: 2300 return -ENOMEM; 2301 } 2302 EXPORT_SYMBOL_GPL(hisi_sas_alloc); 2303 2304 void hisi_sas_free(struct hisi_hba *hisi_hba) 2305 { 2306 int i; 2307 2308 for (i = 0; i < hisi_hba->n_phy; i++) { 2309 struct hisi_sas_phy *phy = &hisi_hba->phy[i]; 2310 2311 del_timer_sync(&phy->timer); 2312 } 2313 2314 if (hisi_hba->wq) 2315 destroy_workqueue(hisi_hba->wq); 2316 } 2317 EXPORT_SYMBOL_GPL(hisi_sas_free); 2318 2319 void hisi_sas_rst_work_handler(struct work_struct *work) 2320 { 2321 struct hisi_hba *hisi_hba = 2322 container_of(work, struct hisi_hba, rst_work); 2323 2324 if (hisi_sas_controller_prereset(hisi_hba)) 2325 return; 2326 2327 hisi_sas_controller_reset(hisi_hba); 2328 } 2329 EXPORT_SYMBOL_GPL(hisi_sas_rst_work_handler); 2330 2331 void hisi_sas_sync_rst_work_handler(struct work_struct *work) 2332 { 2333 struct hisi_sas_rst *rst = 2334 container_of(work, struct hisi_sas_rst, work); 2335 2336 if (hisi_sas_controller_prereset(rst->hisi_hba)) 2337 goto rst_complete; 2338 2339 if (!hisi_sas_controller_reset(rst->hisi_hba)) 2340 rst->done = true; 2341 rst_complete: 2342 complete(rst->completion); 2343 } 2344 EXPORT_SYMBOL_GPL(hisi_sas_sync_rst_work_handler); 2345 2346 int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba) 2347 { 2348 struct device *dev = hisi_hba->dev; 2349 struct platform_device *pdev = hisi_hba->platform_dev; 2350 struct device_node *np = pdev ? pdev->dev.of_node : NULL; 2351 struct clk *refclk; 2352 2353 if (device_property_read_u8_array(dev, "sas-addr", hisi_hba->sas_addr, 2354 SAS_ADDR_SIZE)) { 2355 dev_err(dev, "could not get property sas-addr\n"); 2356 return -ENOENT; 2357 } 2358 2359 if (np) { 2360 /* 2361 * These properties are only required for platform device-based 2362 * controller with DT firmware. 2363 */ 2364 hisi_hba->ctrl = syscon_regmap_lookup_by_phandle(np, 2365 "hisilicon,sas-syscon"); 2366 if (IS_ERR(hisi_hba->ctrl)) { 2367 dev_err(dev, "could not get syscon\n"); 2368 return -ENOENT; 2369 } 2370 2371 if (device_property_read_u32(dev, "ctrl-reset-reg", 2372 &hisi_hba->ctrl_reset_reg)) { 2373 dev_err(dev, "could not get property ctrl-reset-reg\n"); 2374 return -ENOENT; 2375 } 2376 2377 if (device_property_read_u32(dev, "ctrl-reset-sts-reg", 2378 &hisi_hba->ctrl_reset_sts_reg)) { 2379 dev_err(dev, "could not get property ctrl-reset-sts-reg\n"); 2380 return -ENOENT; 2381 } 2382 2383 if (device_property_read_u32(dev, "ctrl-clock-ena-reg", 2384 &hisi_hba->ctrl_clock_ena_reg)) { 2385 dev_err(dev, "could not get property ctrl-clock-ena-reg\n"); 2386 return -ENOENT; 2387 } 2388 } 2389 2390 refclk = devm_clk_get(dev, NULL); 2391 if (IS_ERR(refclk)) 2392 dev_dbg(dev, "no ref clk property\n"); 2393 else 2394 hisi_hba->refclk_frequency_mhz = clk_get_rate(refclk) / 1000000; 2395 2396 if (device_property_read_u32(dev, "phy-count", &hisi_hba->n_phy)) { 2397 dev_err(dev, "could not get property phy-count\n"); 2398 return -ENOENT; 2399 } 2400 2401 if (device_property_read_u32(dev, "queue-count", 2402 &hisi_hba->queue_count)) { 2403 dev_err(dev, "could not get property queue-count\n"); 2404 return -ENOENT; 2405 } 2406 2407 return 0; 2408 } 2409 EXPORT_SYMBOL_GPL(hisi_sas_get_fw_info); 2410 2411 static struct Scsi_Host *hisi_sas_shost_alloc(struct platform_device *pdev, 2412 const struct hisi_sas_hw *hw) 2413 { 2414 struct resource *res; 2415 struct Scsi_Host *shost; 2416 struct hisi_hba *hisi_hba; 2417 struct device *dev = &pdev->dev; 2418 int error; 2419 2420 shost = scsi_host_alloc(hw->sht, sizeof(*hisi_hba)); 2421 if (!shost) { 2422 dev_err(dev, "scsi host alloc failed\n"); 2423 return NULL; 2424 } 2425 hisi_hba = shost_priv(shost); 2426 2427 INIT_WORK(&hisi_hba->rst_work, hisi_sas_rst_work_handler); 2428 hisi_hba->hw = hw; 2429 hisi_hba->dev = dev; 2430 hisi_hba->platform_dev = pdev; 2431 hisi_hba->shost = shost; 2432 SHOST_TO_SAS_HA(shost) = &hisi_hba->sha; 2433 2434 timer_setup(&hisi_hba->timer, NULL, 0); 2435 2436 if (hisi_sas_get_fw_info(hisi_hba) < 0) 2437 goto err_out; 2438 2439 error = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64)); 2440 if (error) { 2441 dev_err(dev, "No usable DMA addressing method\n"); 2442 goto err_out; 2443 } 2444 2445 hisi_hba->regs = devm_platform_ioremap_resource(pdev, 0); 2446 if (IS_ERR(hisi_hba->regs)) 2447 goto err_out; 2448 2449 res = platform_get_resource(pdev, IORESOURCE_MEM, 1); 2450 if (res) { 2451 hisi_hba->sgpio_regs = devm_ioremap_resource(dev, res); 2452 if (IS_ERR(hisi_hba->sgpio_regs)) 2453 goto err_out; 2454 } 2455 2456 if (hisi_sas_alloc(hisi_hba)) { 2457 hisi_sas_free(hisi_hba); 2458 goto err_out; 2459 } 2460 2461 return shost; 2462 err_out: 2463 scsi_host_put(shost); 2464 dev_err(dev, "shost alloc failed\n"); 2465 return NULL; 2466 } 2467 2468 static int hisi_sas_interrupt_preinit(struct hisi_hba *hisi_hba) 2469 { 2470 if (hisi_hba->hw->interrupt_preinit) 2471 return hisi_hba->hw->interrupt_preinit(hisi_hba); 2472 return 0; 2473 } 2474 2475 int hisi_sas_probe(struct platform_device *pdev, 2476 const struct hisi_sas_hw *hw) 2477 { 2478 struct Scsi_Host *shost; 2479 struct hisi_hba *hisi_hba; 2480 struct device *dev = &pdev->dev; 2481 struct asd_sas_phy **arr_phy; 2482 struct asd_sas_port **arr_port; 2483 struct sas_ha_struct *sha; 2484 int rc, phy_nr, port_nr, i; 2485 2486 shost = hisi_sas_shost_alloc(pdev, hw); 2487 if (!shost) 2488 return -ENOMEM; 2489 2490 sha = SHOST_TO_SAS_HA(shost); 2491 hisi_hba = shost_priv(shost); 2492 platform_set_drvdata(pdev, sha); 2493 2494 phy_nr = port_nr = hisi_hba->n_phy; 2495 2496 arr_phy = devm_kcalloc(dev, phy_nr, sizeof(void *), GFP_KERNEL); 2497 arr_port = devm_kcalloc(dev, port_nr, sizeof(void *), GFP_KERNEL); 2498 if (!arr_phy || !arr_port) { 2499 rc = -ENOMEM; 2500 goto err_out_ha; 2501 } 2502 2503 sha->sas_phy = arr_phy; 2504 sha->sas_port = arr_port; 2505 sha->lldd_ha = hisi_hba; 2506 2507 shost->transportt = hisi_sas_stt; 2508 shost->max_id = HISI_SAS_MAX_DEVICES; 2509 shost->max_lun = ~0; 2510 shost->max_channel = 1; 2511 shost->max_cmd_len = 16; 2512 if (hisi_hba->hw->slot_index_alloc) { 2513 shost->can_queue = HISI_SAS_MAX_COMMANDS; 2514 shost->cmd_per_lun = HISI_SAS_MAX_COMMANDS; 2515 } else { 2516 shost->can_queue = HISI_SAS_UNRESERVED_IPTT; 2517 shost->cmd_per_lun = HISI_SAS_UNRESERVED_IPTT; 2518 } 2519 2520 sha->sas_ha_name = DRV_NAME; 2521 sha->dev = hisi_hba->dev; 2522 sha->lldd_module = THIS_MODULE; 2523 sha->sas_addr = &hisi_hba->sas_addr[0]; 2524 sha->num_phys = hisi_hba->n_phy; 2525 sha->core.shost = hisi_hba->shost; 2526 2527 for (i = 0; i < hisi_hba->n_phy; i++) { 2528 sha->sas_phy[i] = &hisi_hba->phy[i].sas_phy; 2529 sha->sas_port[i] = &hisi_hba->port[i].sas_port; 2530 } 2531 2532 rc = hisi_sas_interrupt_preinit(hisi_hba); 2533 if (rc) 2534 goto err_out_ha; 2535 2536 rc = scsi_add_host(shost, &pdev->dev); 2537 if (rc) 2538 goto err_out_ha; 2539 2540 rc = sas_register_ha(sha); 2541 if (rc) 2542 goto err_out_register_ha; 2543 2544 rc = hisi_hba->hw->hw_init(hisi_hba); 2545 if (rc) 2546 goto err_out_hw_init; 2547 2548 scsi_scan_host(shost); 2549 2550 return 0; 2551 2552 err_out_hw_init: 2553 sas_unregister_ha(sha); 2554 err_out_register_ha: 2555 scsi_remove_host(shost); 2556 err_out_ha: 2557 hisi_sas_free(hisi_hba); 2558 scsi_host_put(shost); 2559 return rc; 2560 } 2561 EXPORT_SYMBOL_GPL(hisi_sas_probe); 2562 2563 int hisi_sas_remove(struct platform_device *pdev) 2564 { 2565 struct sas_ha_struct *sha = platform_get_drvdata(pdev); 2566 struct hisi_hba *hisi_hba = sha->lldd_ha; 2567 struct Scsi_Host *shost = sha->core.shost; 2568 2569 del_timer_sync(&hisi_hba->timer); 2570 2571 sas_unregister_ha(sha); 2572 sas_remove_host(sha->core.shost); 2573 2574 hisi_sas_free(hisi_hba); 2575 scsi_host_put(shost); 2576 return 0; 2577 } 2578 EXPORT_SYMBOL_GPL(hisi_sas_remove); 2579 2580 #if IS_ENABLED(CONFIG_SCSI_HISI_SAS_DEBUGFS_DEFAULT_ENABLE) 2581 #define DEBUGFS_ENABLE_DEFAULT "enabled" 2582 bool hisi_sas_debugfs_enable = true; 2583 u32 hisi_sas_debugfs_dump_count = 50; 2584 #else 2585 #define DEBUGFS_ENABLE_DEFAULT "disabled" 2586 bool hisi_sas_debugfs_enable; 2587 u32 hisi_sas_debugfs_dump_count = 1; 2588 #endif 2589 2590 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_enable); 2591 module_param_named(debugfs_enable, hisi_sas_debugfs_enable, bool, 0444); 2592 MODULE_PARM_DESC(hisi_sas_debugfs_enable, 2593 "Enable driver debugfs (default "DEBUGFS_ENABLE_DEFAULT")"); 2594 2595 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dump_count); 2596 module_param_named(debugfs_dump_count, hisi_sas_debugfs_dump_count, uint, 0444); 2597 MODULE_PARM_DESC(hisi_sas_debugfs_dump_count, "Number of debugfs dumps to allow"); 2598 2599 struct dentry *hisi_sas_debugfs_dir; 2600 EXPORT_SYMBOL_GPL(hisi_sas_debugfs_dir); 2601 2602 static __init int hisi_sas_init(void) 2603 { 2604 hisi_sas_stt = sas_domain_attach_transport(&hisi_sas_transport_ops); 2605 if (!hisi_sas_stt) 2606 return -ENOMEM; 2607 2608 if (hisi_sas_debugfs_enable) { 2609 hisi_sas_debugfs_dir = debugfs_create_dir("hisi_sas", NULL); 2610 if (hisi_sas_debugfs_dump_count > HISI_SAS_MAX_DEBUGFS_DUMP) { 2611 pr_info("hisi_sas: Limiting debugfs dump count\n"); 2612 hisi_sas_debugfs_dump_count = HISI_SAS_MAX_DEBUGFS_DUMP; 2613 } 2614 } 2615 2616 return 0; 2617 } 2618 2619 static __exit void hisi_sas_exit(void) 2620 { 2621 sas_release_transport(hisi_sas_stt); 2622 2623 debugfs_remove(hisi_sas_debugfs_dir); 2624 } 2625 2626 module_init(hisi_sas_init); 2627 module_exit(hisi_sas_exit); 2628 2629 MODULE_LICENSE("GPL"); 2630 MODULE_AUTHOR("John Garry <john.garry@huawei.com>"); 2631 MODULE_DESCRIPTION("HISILICON SAS controller driver"); 2632 MODULE_ALIAS("platform:" DRV_NAME); 2633