1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Driver for Broadcom MPI3 Storage Controllers 4 * 5 * Copyright (C) 2017-2021 Broadcom Inc. 6 * (mailto: mpi3mr-linuxdrv.pdl@broadcom.com) 7 * 8 */ 9 10 #include "mpi3mr.h" 11 #include <linux/io-64-nonatomic-lo-hi.h> 12 13 #if defined(writeq) && defined(CONFIG_64BIT) 14 static inline void mpi3mr_writeq(__u64 b, volatile void __iomem *addr) 15 { 16 writeq(b, addr); 17 } 18 #else 19 static inline void mpi3mr_writeq(__u64 b, volatile void __iomem *addr) 20 { 21 __u64 data_out = b; 22 23 writel((u32)(data_out), addr); 24 writel((u32)(data_out >> 32), (addr + 4)); 25 } 26 #endif 27 28 static inline bool 29 mpi3mr_check_req_qfull(struct op_req_qinfo *op_req_q) 30 { 31 u16 pi, ci, max_entries; 32 bool is_qfull = false; 33 34 pi = op_req_q->pi; 35 ci = READ_ONCE(op_req_q->ci); 36 max_entries = op_req_q->num_requests; 37 38 if ((ci == (pi + 1)) || ((!ci) && (pi == (max_entries - 1)))) 39 is_qfull = true; 40 41 return is_qfull; 42 } 43 44 static void mpi3mr_sync_irqs(struct mpi3mr_ioc *mrioc) 45 { 46 u16 i, max_vectors; 47 48 max_vectors = mrioc->intr_info_count; 49 50 for (i = 0; i < max_vectors; i++) 51 synchronize_irq(pci_irq_vector(mrioc->pdev, i)); 52 } 53 54 void mpi3mr_ioc_disable_intr(struct mpi3mr_ioc *mrioc) 55 { 56 mrioc->intr_enabled = 0; 57 mpi3mr_sync_irqs(mrioc); 58 } 59 60 void mpi3mr_ioc_enable_intr(struct mpi3mr_ioc *mrioc) 61 { 62 mrioc->intr_enabled = 1; 63 } 64 65 static void mpi3mr_cleanup_isr(struct mpi3mr_ioc *mrioc) 66 { 67 u16 i; 68 69 mpi3mr_ioc_disable_intr(mrioc); 70 71 if (!mrioc->intr_info) 72 return; 73 74 for (i = 0; i < mrioc->intr_info_count; i++) 75 free_irq(pci_irq_vector(mrioc->pdev, i), 76 (mrioc->intr_info + i)); 77 78 kfree(mrioc->intr_info); 79 mrioc->intr_info = NULL; 80 mrioc->intr_info_count = 0; 81 pci_free_irq_vectors(mrioc->pdev); 82 } 83 84 void mpi3mr_add_sg_single(void *paddr, u8 flags, u32 length, 85 dma_addr_t dma_addr) 86 { 87 struct mpi3_sge_common *sgel = paddr; 88 89 sgel->flags = flags; 90 sgel->length = cpu_to_le32(length); 91 sgel->address = cpu_to_le64(dma_addr); 92 } 93 94 void mpi3mr_build_zero_len_sge(void *paddr) 95 { 96 u8 sgl_flags = MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST; 97 98 mpi3mr_add_sg_single(paddr, sgl_flags, 0, -1); 99 } 100 101 void *mpi3mr_get_reply_virt_addr(struct mpi3mr_ioc *mrioc, 102 dma_addr_t phys_addr) 103 { 104 if (!phys_addr) 105 return NULL; 106 107 if ((phys_addr < mrioc->reply_buf_dma) || 108 (phys_addr > mrioc->reply_buf_dma_max_address)) 109 return NULL; 110 111 return mrioc->reply_buf + (phys_addr - mrioc->reply_buf_dma); 112 } 113 114 void *mpi3mr_get_sensebuf_virt_addr(struct mpi3mr_ioc *mrioc, 115 dma_addr_t phys_addr) 116 { 117 if (!phys_addr) 118 return NULL; 119 120 return mrioc->sense_buf + (phys_addr - mrioc->sense_buf_dma); 121 } 122 123 static void mpi3mr_repost_reply_buf(struct mpi3mr_ioc *mrioc, 124 u64 reply_dma) 125 { 126 u32 old_idx = 0; 127 128 spin_lock(&mrioc->reply_free_queue_lock); 129 old_idx = mrioc->reply_free_queue_host_index; 130 mrioc->reply_free_queue_host_index = ( 131 (mrioc->reply_free_queue_host_index == 132 (mrioc->reply_free_qsz - 1)) ? 0 : 133 (mrioc->reply_free_queue_host_index + 1)); 134 mrioc->reply_free_q[old_idx] = cpu_to_le64(reply_dma); 135 writel(mrioc->reply_free_queue_host_index, 136 &mrioc->sysif_regs->reply_free_host_index); 137 spin_unlock(&mrioc->reply_free_queue_lock); 138 } 139 140 void mpi3mr_repost_sense_buf(struct mpi3mr_ioc *mrioc, 141 u64 sense_buf_dma) 142 { 143 u32 old_idx = 0; 144 145 spin_lock(&mrioc->sbq_lock); 146 old_idx = mrioc->sbq_host_index; 147 mrioc->sbq_host_index = ((mrioc->sbq_host_index == 148 (mrioc->sense_buf_q_sz - 1)) ? 0 : 149 (mrioc->sbq_host_index + 1)); 150 mrioc->sense_buf_q[old_idx] = cpu_to_le64(sense_buf_dma); 151 writel(mrioc->sbq_host_index, 152 &mrioc->sysif_regs->sense_buffer_free_host_index); 153 spin_unlock(&mrioc->sbq_lock); 154 } 155 156 static void mpi3mr_print_event_data(struct mpi3mr_ioc *mrioc, 157 struct mpi3_event_notification_reply *event_reply) 158 { 159 char *desc = NULL; 160 u16 event; 161 162 event = event_reply->event; 163 164 switch (event) { 165 case MPI3_EVENT_LOG_DATA: 166 desc = "Log Data"; 167 break; 168 case MPI3_EVENT_CHANGE: 169 desc = "Event Change"; 170 break; 171 case MPI3_EVENT_GPIO_INTERRUPT: 172 desc = "GPIO Interrupt"; 173 break; 174 case MPI3_EVENT_TEMP_THRESHOLD: 175 desc = "Temperature Threshold"; 176 break; 177 case MPI3_EVENT_CABLE_MGMT: 178 desc = "Cable Management"; 179 break; 180 case MPI3_EVENT_ENERGY_PACK_CHANGE: 181 desc = "Energy Pack Change"; 182 break; 183 case MPI3_EVENT_DEVICE_ADDED: 184 { 185 struct mpi3_device_page0 *event_data = 186 (struct mpi3_device_page0 *)event_reply->event_data; 187 ioc_info(mrioc, "Device Added: dev=0x%04x Form=0x%x\n", 188 event_data->dev_handle, event_data->device_form); 189 return; 190 } 191 case MPI3_EVENT_DEVICE_INFO_CHANGED: 192 { 193 struct mpi3_device_page0 *event_data = 194 (struct mpi3_device_page0 *)event_reply->event_data; 195 ioc_info(mrioc, "Device Info Changed: dev=0x%04x Form=0x%x\n", 196 event_data->dev_handle, event_data->device_form); 197 return; 198 } 199 case MPI3_EVENT_DEVICE_STATUS_CHANGE: 200 { 201 struct mpi3_event_data_device_status_change *event_data = 202 (struct mpi3_event_data_device_status_change *)event_reply->event_data; 203 ioc_info(mrioc, "Device status Change: dev=0x%04x RC=0x%x\n", 204 event_data->dev_handle, event_data->reason_code); 205 return; 206 } 207 case MPI3_EVENT_SAS_DISCOVERY: 208 { 209 struct mpi3_event_data_sas_discovery *event_data = 210 (struct mpi3_event_data_sas_discovery *)event_reply->event_data; 211 ioc_info(mrioc, "SAS Discovery: (%s) status (0x%08x)\n", 212 (event_data->reason_code == MPI3_EVENT_SAS_DISC_RC_STARTED) ? 213 "start" : "stop", 214 le32_to_cpu(event_data->discovery_status)); 215 return; 216 } 217 case MPI3_EVENT_SAS_BROADCAST_PRIMITIVE: 218 desc = "SAS Broadcast Primitive"; 219 break; 220 case MPI3_EVENT_SAS_NOTIFY_PRIMITIVE: 221 desc = "SAS Notify Primitive"; 222 break; 223 case MPI3_EVENT_SAS_INIT_DEVICE_STATUS_CHANGE: 224 desc = "SAS Init Device Status Change"; 225 break; 226 case MPI3_EVENT_SAS_INIT_TABLE_OVERFLOW: 227 desc = "SAS Init Table Overflow"; 228 break; 229 case MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST: 230 desc = "SAS Topology Change List"; 231 break; 232 case MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE: 233 desc = "Enclosure Device Status Change"; 234 break; 235 case MPI3_EVENT_HARD_RESET_RECEIVED: 236 desc = "Hard Reset Received"; 237 break; 238 case MPI3_EVENT_SAS_PHY_COUNTER: 239 desc = "SAS PHY Counter"; 240 break; 241 case MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR: 242 desc = "SAS Device Discovery Error"; 243 break; 244 case MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST: 245 desc = "PCIE Topology Change List"; 246 break; 247 case MPI3_EVENT_PCIE_ENUMERATION: 248 { 249 struct mpi3_event_data_pcie_enumeration *event_data = 250 (struct mpi3_event_data_pcie_enumeration *)event_reply->event_data; 251 ioc_info(mrioc, "PCIE Enumeration: (%s)", 252 (event_data->reason_code == 253 MPI3_EVENT_PCIE_ENUM_RC_STARTED) ? "start" : "stop"); 254 if (event_data->enumeration_status) 255 ioc_info(mrioc, "enumeration_status(0x%08x)\n", 256 le32_to_cpu(event_data->enumeration_status)); 257 return; 258 } 259 case MPI3_EVENT_PREPARE_FOR_RESET: 260 desc = "Prepare For Reset"; 261 break; 262 } 263 264 if (!desc) 265 return; 266 267 ioc_info(mrioc, "%s\n", desc); 268 } 269 270 static void mpi3mr_handle_events(struct mpi3mr_ioc *mrioc, 271 struct mpi3_default_reply *def_reply) 272 { 273 struct mpi3_event_notification_reply *event_reply = 274 (struct mpi3_event_notification_reply *)def_reply; 275 276 mrioc->change_count = le16_to_cpu(event_reply->ioc_change_count); 277 mpi3mr_print_event_data(mrioc, event_reply); 278 mpi3mr_os_handle_events(mrioc, event_reply); 279 } 280 281 static struct mpi3mr_drv_cmd * 282 mpi3mr_get_drv_cmd(struct mpi3mr_ioc *mrioc, u16 host_tag, 283 struct mpi3_default_reply *def_reply) 284 { 285 u16 idx; 286 287 switch (host_tag) { 288 case MPI3MR_HOSTTAG_INITCMDS: 289 return &mrioc->init_cmds; 290 case MPI3MR_HOSTTAG_BLK_TMS: 291 return &mrioc->host_tm_cmds; 292 case MPI3MR_HOSTTAG_INVALID: 293 if (def_reply && def_reply->function == 294 MPI3_FUNCTION_EVENT_NOTIFICATION) 295 mpi3mr_handle_events(mrioc, def_reply); 296 return NULL; 297 default: 298 break; 299 } 300 if (host_tag >= MPI3MR_HOSTTAG_DEVRMCMD_MIN && 301 host_tag <= MPI3MR_HOSTTAG_DEVRMCMD_MAX) { 302 idx = host_tag - MPI3MR_HOSTTAG_DEVRMCMD_MIN; 303 return &mrioc->dev_rmhs_cmds[idx]; 304 } 305 306 return NULL; 307 } 308 309 static void mpi3mr_process_admin_reply_desc(struct mpi3mr_ioc *mrioc, 310 struct mpi3_default_reply_descriptor *reply_desc, u64 *reply_dma) 311 { 312 u16 reply_desc_type, host_tag = 0; 313 u16 ioc_status = MPI3_IOCSTATUS_SUCCESS; 314 u32 ioc_loginfo = 0; 315 struct mpi3_status_reply_descriptor *status_desc; 316 struct mpi3_address_reply_descriptor *addr_desc; 317 struct mpi3_success_reply_descriptor *success_desc; 318 struct mpi3_default_reply *def_reply = NULL; 319 struct mpi3mr_drv_cmd *cmdptr = NULL; 320 struct mpi3_scsi_io_reply *scsi_reply; 321 u8 *sense_buf = NULL; 322 323 *reply_dma = 0; 324 reply_desc_type = le16_to_cpu(reply_desc->reply_flags) & 325 MPI3_REPLY_DESCRIPT_FLAGS_TYPE_MASK; 326 switch (reply_desc_type) { 327 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_STATUS: 328 status_desc = (struct mpi3_status_reply_descriptor *)reply_desc; 329 host_tag = le16_to_cpu(status_desc->host_tag); 330 ioc_status = le16_to_cpu(status_desc->ioc_status); 331 if (ioc_status & 332 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) 333 ioc_loginfo = le32_to_cpu(status_desc->ioc_log_info); 334 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; 335 break; 336 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_ADDRESS_REPLY: 337 addr_desc = (struct mpi3_address_reply_descriptor *)reply_desc; 338 *reply_dma = le64_to_cpu(addr_desc->reply_frame_address); 339 def_reply = mpi3mr_get_reply_virt_addr(mrioc, *reply_dma); 340 if (!def_reply) 341 goto out; 342 host_tag = le16_to_cpu(def_reply->host_tag); 343 ioc_status = le16_to_cpu(def_reply->ioc_status); 344 if (ioc_status & 345 MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_LOGINFOAVAIL) 346 ioc_loginfo = le32_to_cpu(def_reply->ioc_log_info); 347 ioc_status &= MPI3_REPLY_DESCRIPT_STATUS_IOCSTATUS_STATUS_MASK; 348 if (def_reply->function == MPI3_FUNCTION_SCSI_IO) { 349 scsi_reply = (struct mpi3_scsi_io_reply *)def_reply; 350 sense_buf = mpi3mr_get_sensebuf_virt_addr(mrioc, 351 le64_to_cpu(scsi_reply->sense_data_buffer_address)); 352 } 353 break; 354 case MPI3_REPLY_DESCRIPT_FLAGS_TYPE_SUCCESS: 355 success_desc = (struct mpi3_success_reply_descriptor *)reply_desc; 356 host_tag = le16_to_cpu(success_desc->host_tag); 357 break; 358 default: 359 break; 360 } 361 362 cmdptr = mpi3mr_get_drv_cmd(mrioc, host_tag, def_reply); 363 if (cmdptr) { 364 if (cmdptr->state & MPI3MR_CMD_PENDING) { 365 cmdptr->state |= MPI3MR_CMD_COMPLETE; 366 cmdptr->ioc_loginfo = ioc_loginfo; 367 cmdptr->ioc_status = ioc_status; 368 cmdptr->state &= ~MPI3MR_CMD_PENDING; 369 if (def_reply) { 370 cmdptr->state |= MPI3MR_CMD_REPLY_VALID; 371 memcpy((u8 *)cmdptr->reply, (u8 *)def_reply, 372 mrioc->facts.reply_sz); 373 } 374 if (cmdptr->is_waiting) { 375 complete(&cmdptr->done); 376 cmdptr->is_waiting = 0; 377 } else if (cmdptr->callback) 378 cmdptr->callback(mrioc, cmdptr); 379 } 380 } 381 out: 382 if (sense_buf) 383 mpi3mr_repost_sense_buf(mrioc, 384 le64_to_cpu(scsi_reply->sense_data_buffer_address)); 385 } 386 387 static int mpi3mr_process_admin_reply_q(struct mpi3mr_ioc *mrioc) 388 { 389 u32 exp_phase = mrioc->admin_reply_ephase; 390 u32 admin_reply_ci = mrioc->admin_reply_ci; 391 u32 num_admin_replies = 0; 392 u64 reply_dma = 0; 393 struct mpi3_default_reply_descriptor *reply_desc; 394 395 reply_desc = (struct mpi3_default_reply_descriptor *)mrioc->admin_reply_base + 396 admin_reply_ci; 397 398 if ((le16_to_cpu(reply_desc->reply_flags) & 399 MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) 400 return 0; 401 402 do { 403 mrioc->admin_req_ci = le16_to_cpu(reply_desc->request_queue_ci); 404 mpi3mr_process_admin_reply_desc(mrioc, reply_desc, &reply_dma); 405 if (reply_dma) 406 mpi3mr_repost_reply_buf(mrioc, reply_dma); 407 num_admin_replies++; 408 if (++admin_reply_ci == mrioc->num_admin_replies) { 409 admin_reply_ci = 0; 410 exp_phase ^= 1; 411 } 412 reply_desc = 413 (struct mpi3_default_reply_descriptor *)mrioc->admin_reply_base + 414 admin_reply_ci; 415 if ((le16_to_cpu(reply_desc->reply_flags) & 416 MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) 417 break; 418 } while (1); 419 420 writel(admin_reply_ci, &mrioc->sysif_regs->admin_reply_queue_ci); 421 mrioc->admin_reply_ci = admin_reply_ci; 422 mrioc->admin_reply_ephase = exp_phase; 423 424 return num_admin_replies; 425 } 426 427 /** 428 * mpi3mr_get_reply_desc - get reply descriptor frame corresponding to 429 * queue's consumer index from operational reply descriptor queue. 430 * @op_reply_q: op_reply_qinfo object 431 * @reply_ci: operational reply descriptor's queue consumer index 432 * 433 * Returns reply descriptor frame address 434 */ 435 static inline struct mpi3_default_reply_descriptor * 436 mpi3mr_get_reply_desc(struct op_reply_qinfo *op_reply_q, u32 reply_ci) 437 { 438 void *segment_base_addr; 439 struct segments *segments = op_reply_q->q_segments; 440 struct mpi3_default_reply_descriptor *reply_desc = NULL; 441 442 segment_base_addr = 443 segments[reply_ci / op_reply_q->segment_qd].segment; 444 reply_desc = (struct mpi3_default_reply_descriptor *)segment_base_addr + 445 (reply_ci % op_reply_q->segment_qd); 446 return reply_desc; 447 } 448 449 static int mpi3mr_process_op_reply_q(struct mpi3mr_ioc *mrioc, 450 struct mpi3mr_intr_info *intr_info) 451 { 452 struct op_reply_qinfo *op_reply_q = intr_info->op_reply_q; 453 struct op_req_qinfo *op_req_q; 454 u32 exp_phase; 455 u32 reply_ci; 456 u32 num_op_reply = 0; 457 u64 reply_dma = 0; 458 struct mpi3_default_reply_descriptor *reply_desc; 459 u16 req_q_idx = 0, reply_qidx; 460 461 reply_qidx = op_reply_q->qid - 1; 462 463 if (!atomic_add_unless(&op_reply_q->in_use, 1, 1)) 464 return 0; 465 466 exp_phase = op_reply_q->ephase; 467 reply_ci = op_reply_q->ci; 468 469 reply_desc = mpi3mr_get_reply_desc(op_reply_q, reply_ci); 470 if ((le16_to_cpu(reply_desc->reply_flags) & 471 MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) { 472 atomic_dec(&op_reply_q->in_use); 473 return 0; 474 } 475 476 do { 477 req_q_idx = le16_to_cpu(reply_desc->request_queue_id) - 1; 478 op_req_q = &mrioc->req_qinfo[req_q_idx]; 479 480 WRITE_ONCE(op_req_q->ci, le16_to_cpu(reply_desc->request_queue_ci)); 481 mpi3mr_process_op_reply_desc(mrioc, reply_desc, &reply_dma, 482 reply_qidx); 483 atomic_dec(&op_reply_q->pend_ios); 484 if (reply_dma) 485 mpi3mr_repost_reply_buf(mrioc, reply_dma); 486 num_op_reply++; 487 488 if (++reply_ci == op_reply_q->num_replies) { 489 reply_ci = 0; 490 exp_phase ^= 1; 491 } 492 493 reply_desc = mpi3mr_get_reply_desc(op_reply_q, reply_ci); 494 495 if ((le16_to_cpu(reply_desc->reply_flags) & 496 MPI3_REPLY_DESCRIPT_FLAGS_PHASE_MASK) != exp_phase) 497 break; 498 /* 499 * Exit completion loop to avoid CPU lockup 500 * Ensure remaining completion happens from threaded ISR. 501 */ 502 if (num_op_reply > mrioc->max_host_ios) { 503 intr_info->op_reply_q->enable_irq_poll = true; 504 break; 505 } 506 507 } while (1); 508 509 writel(reply_ci, 510 &mrioc->sysif_regs->oper_queue_indexes[reply_qidx].consumer_index); 511 op_reply_q->ci = reply_ci; 512 op_reply_q->ephase = exp_phase; 513 514 atomic_dec(&op_reply_q->in_use); 515 return num_op_reply; 516 } 517 518 static irqreturn_t mpi3mr_isr_primary(int irq, void *privdata) 519 { 520 struct mpi3mr_intr_info *intr_info = privdata; 521 struct mpi3mr_ioc *mrioc; 522 u16 midx; 523 u32 num_admin_replies = 0, num_op_reply = 0; 524 525 if (!intr_info) 526 return IRQ_NONE; 527 528 mrioc = intr_info->mrioc; 529 530 if (!mrioc->intr_enabled) 531 return IRQ_NONE; 532 533 midx = intr_info->msix_index; 534 535 if (!midx) 536 num_admin_replies = mpi3mr_process_admin_reply_q(mrioc); 537 if (intr_info->op_reply_q) 538 num_op_reply = mpi3mr_process_op_reply_q(mrioc, intr_info); 539 540 if (num_admin_replies || num_op_reply) 541 return IRQ_HANDLED; 542 else 543 return IRQ_NONE; 544 } 545 546 static irqreturn_t mpi3mr_isr(int irq, void *privdata) 547 { 548 struct mpi3mr_intr_info *intr_info = privdata; 549 struct mpi3mr_ioc *mrioc; 550 u16 midx; 551 int ret; 552 553 if (!intr_info) 554 return IRQ_NONE; 555 556 mrioc = intr_info->mrioc; 557 midx = intr_info->msix_index; 558 /* Call primary ISR routine */ 559 ret = mpi3mr_isr_primary(irq, privdata); 560 561 /* 562 * If more IOs are expected, schedule IRQ polling thread. 563 * Otherwise exit from ISR. 564 */ 565 if (!intr_info->op_reply_q) 566 return ret; 567 568 if (!intr_info->op_reply_q->enable_irq_poll || 569 !atomic_read(&intr_info->op_reply_q->pend_ios)) 570 return ret; 571 572 disable_irq_nosync(pci_irq_vector(mrioc->pdev, midx)); 573 574 return IRQ_WAKE_THREAD; 575 } 576 577 /** 578 * mpi3mr_isr_poll - Reply queue polling routine 579 * @irq: IRQ 580 * @privdata: Interrupt info 581 * 582 * poll for pending I/O completions in a loop until pending I/Os 583 * present or controller queue depth I/Os are processed. 584 * 585 * Return: IRQ_NONE or IRQ_HANDLED 586 */ 587 static irqreturn_t mpi3mr_isr_poll(int irq, void *privdata) 588 { 589 struct mpi3mr_intr_info *intr_info = privdata; 590 struct mpi3mr_ioc *mrioc; 591 u16 midx; 592 u32 num_op_reply = 0; 593 594 if (!intr_info || !intr_info->op_reply_q) 595 return IRQ_NONE; 596 597 mrioc = intr_info->mrioc; 598 midx = intr_info->msix_index; 599 600 /* Poll for pending IOs completions */ 601 do { 602 if (!mrioc->intr_enabled) 603 break; 604 605 if (!midx) 606 mpi3mr_process_admin_reply_q(mrioc); 607 if (intr_info->op_reply_q) 608 num_op_reply += 609 mpi3mr_process_op_reply_q(mrioc, intr_info); 610 611 usleep_range(mrioc->irqpoll_sleep, 10 * mrioc->irqpoll_sleep); 612 613 } while (atomic_read(&intr_info->op_reply_q->pend_ios) && 614 (num_op_reply < mrioc->max_host_ios)); 615 616 intr_info->op_reply_q->enable_irq_poll = false; 617 enable_irq(pci_irq_vector(mrioc->pdev, midx)); 618 619 return IRQ_HANDLED; 620 } 621 622 /** 623 * mpi3mr_request_irq - Request IRQ and register ISR 624 * @mrioc: Adapter instance reference 625 * @index: IRQ vector index 626 * 627 * Request threaded ISR with primary ISR and secondary 628 * 629 * Return: 0 on success and non zero on failures. 630 */ 631 static inline int mpi3mr_request_irq(struct mpi3mr_ioc *mrioc, u16 index) 632 { 633 struct pci_dev *pdev = mrioc->pdev; 634 struct mpi3mr_intr_info *intr_info = mrioc->intr_info + index; 635 int retval = 0; 636 637 intr_info->mrioc = mrioc; 638 intr_info->msix_index = index; 639 intr_info->op_reply_q = NULL; 640 641 snprintf(intr_info->name, MPI3MR_NAME_LENGTH, "%s%d-msix%d", 642 mrioc->driver_name, mrioc->id, index); 643 644 retval = request_threaded_irq(pci_irq_vector(pdev, index), mpi3mr_isr, 645 mpi3mr_isr_poll, IRQF_SHARED, intr_info->name, intr_info); 646 if (retval) { 647 ioc_err(mrioc, "%s: Unable to allocate interrupt %d!\n", 648 intr_info->name, pci_irq_vector(pdev, index)); 649 return retval; 650 } 651 652 return retval; 653 } 654 655 /** 656 * mpi3mr_setup_isr - Setup ISR for the controller 657 * @mrioc: Adapter instance reference 658 * @setup_one: Request one IRQ or more 659 * 660 * Allocate IRQ vectors and call mpi3mr_request_irq to setup ISR 661 * 662 * Return: 0 on success and non zero on failures. 663 */ 664 static int mpi3mr_setup_isr(struct mpi3mr_ioc *mrioc, u8 setup_one) 665 { 666 unsigned int irq_flags = PCI_IRQ_MSIX; 667 int max_vectors; 668 int retval; 669 int i; 670 struct irq_affinity desc = { .pre_vectors = 1}; 671 672 mpi3mr_cleanup_isr(mrioc); 673 674 if (setup_one || reset_devices) 675 max_vectors = 1; 676 else { 677 max_vectors = 678 min_t(int, mrioc->cpu_count + 1, mrioc->msix_count); 679 680 ioc_info(mrioc, 681 "MSI-X vectors supported: %d, no of cores: %d,", 682 mrioc->msix_count, mrioc->cpu_count); 683 ioc_info(mrioc, 684 "MSI-x vectors requested: %d\n", max_vectors); 685 } 686 687 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES; 688 689 mrioc->op_reply_q_offset = (max_vectors > 1) ? 1 : 0; 690 retval = pci_alloc_irq_vectors_affinity(mrioc->pdev, 691 1, max_vectors, irq_flags, &desc); 692 if (retval < 0) { 693 ioc_err(mrioc, "Cannot alloc irq vectors\n"); 694 goto out_failed; 695 } 696 if (retval != max_vectors) { 697 ioc_info(mrioc, 698 "allocated vectors (%d) are less than configured (%d)\n", 699 retval, max_vectors); 700 /* 701 * If only one MSI-x is allocated, then MSI-x 0 will be shared 702 * between Admin queue and operational queue 703 */ 704 if (retval == 1) 705 mrioc->op_reply_q_offset = 0; 706 707 max_vectors = retval; 708 } 709 mrioc->intr_info = kzalloc(sizeof(struct mpi3mr_intr_info) * max_vectors, 710 GFP_KERNEL); 711 if (!mrioc->intr_info) { 712 retval = -ENOMEM; 713 pci_free_irq_vectors(mrioc->pdev); 714 goto out_failed; 715 } 716 for (i = 0; i < max_vectors; i++) { 717 retval = mpi3mr_request_irq(mrioc, i); 718 if (retval) { 719 mrioc->intr_info_count = i; 720 goto out_failed; 721 } 722 } 723 mrioc->intr_info_count = max_vectors; 724 mpi3mr_ioc_enable_intr(mrioc); 725 return 0; 726 727 out_failed: 728 mpi3mr_cleanup_isr(mrioc); 729 730 return retval; 731 } 732 733 static const struct { 734 enum mpi3mr_iocstate value; 735 char *name; 736 } mrioc_states[] = { 737 { MRIOC_STATE_READY, "ready" }, 738 { MRIOC_STATE_FAULT, "fault" }, 739 { MRIOC_STATE_RESET, "reset" }, 740 { MRIOC_STATE_BECOMING_READY, "becoming ready" }, 741 { MRIOC_STATE_RESET_REQUESTED, "reset requested" }, 742 { MRIOC_STATE_UNRECOVERABLE, "unrecoverable error" }, 743 }; 744 745 static const char *mpi3mr_iocstate_name(enum mpi3mr_iocstate mrioc_state) 746 { 747 int i; 748 char *name = NULL; 749 750 for (i = 0; i < ARRAY_SIZE(mrioc_states); i++) { 751 if (mrioc_states[i].value == mrioc_state) { 752 name = mrioc_states[i].name; 753 break; 754 } 755 } 756 return name; 757 } 758 759 /* Reset reason to name mapper structure*/ 760 static const struct { 761 enum mpi3mr_reset_reason value; 762 char *name; 763 } mpi3mr_reset_reason_codes[] = { 764 { MPI3MR_RESET_FROM_BRINGUP, "timeout in bringup" }, 765 { MPI3MR_RESET_FROM_FAULT_WATCH, "fault" }, 766 { MPI3MR_RESET_FROM_IOCTL, "application invocation" }, 767 { MPI3MR_RESET_FROM_EH_HOS, "error handling" }, 768 { MPI3MR_RESET_FROM_TM_TIMEOUT, "TM timeout" }, 769 { MPI3MR_RESET_FROM_IOCTL_TIMEOUT, "IOCTL timeout" }, 770 { MPI3MR_RESET_FROM_MUR_FAILURE, "MUR failure" }, 771 { MPI3MR_RESET_FROM_CTLR_CLEANUP, "timeout in controller cleanup" }, 772 { MPI3MR_RESET_FROM_CIACTIV_FAULT, "component image activation fault" }, 773 { MPI3MR_RESET_FROM_PE_TIMEOUT, "port enable timeout" }, 774 { MPI3MR_RESET_FROM_TSU_TIMEOUT, "time stamp update timeout" }, 775 { MPI3MR_RESET_FROM_DELREQQ_TIMEOUT, "delete request queue timeout" }, 776 { MPI3MR_RESET_FROM_DELREPQ_TIMEOUT, "delete reply queue timeout" }, 777 { 778 MPI3MR_RESET_FROM_CREATEREPQ_TIMEOUT, 779 "create request queue timeout" 780 }, 781 { 782 MPI3MR_RESET_FROM_CREATEREQQ_TIMEOUT, 783 "create reply queue timeout" 784 }, 785 { MPI3MR_RESET_FROM_IOCFACTS_TIMEOUT, "IOC facts timeout" }, 786 { MPI3MR_RESET_FROM_IOCINIT_TIMEOUT, "IOC init timeout" }, 787 { MPI3MR_RESET_FROM_EVTNOTIFY_TIMEOUT, "event notify timeout" }, 788 { MPI3MR_RESET_FROM_EVTACK_TIMEOUT, "event acknowledgment timeout" }, 789 { 790 MPI3MR_RESET_FROM_CIACTVRST_TIMER, 791 "component image activation timeout" 792 }, 793 { 794 MPI3MR_RESET_FROM_GETPKGVER_TIMEOUT, 795 "get package version timeout" 796 }, 797 { MPI3MR_RESET_FROM_SYSFS, "sysfs invocation" }, 798 { MPI3MR_RESET_FROM_SYSFS_TIMEOUT, "sysfs TM timeout" }, 799 }; 800 801 /** 802 * mpi3mr_reset_rc_name - get reset reason code name 803 * @reason_code: reset reason code value 804 * 805 * Map reset reason to an NULL terminated ASCII string 806 * 807 * Return: name corresponding to reset reason value or NULL. 808 */ 809 static const char *mpi3mr_reset_rc_name(enum mpi3mr_reset_reason reason_code) 810 { 811 int i; 812 char *name = NULL; 813 814 for (i = 0; i < ARRAY_SIZE(mpi3mr_reset_reason_codes); i++) { 815 if (mpi3mr_reset_reason_codes[i].value == reason_code) { 816 name = mpi3mr_reset_reason_codes[i].name; 817 break; 818 } 819 } 820 return name; 821 } 822 823 /* Reset type to name mapper structure*/ 824 static const struct { 825 u16 reset_type; 826 char *name; 827 } mpi3mr_reset_types[] = { 828 { MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET, "soft" }, 829 { MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, "diag fault" }, 830 }; 831 832 /** 833 * mpi3mr_reset_type_name - get reset type name 834 * @reset_type: reset type value 835 * 836 * Map reset type to an NULL terminated ASCII string 837 * 838 * Return: name corresponding to reset type value or NULL. 839 */ 840 static const char *mpi3mr_reset_type_name(u16 reset_type) 841 { 842 int i; 843 char *name = NULL; 844 845 for (i = 0; i < ARRAY_SIZE(mpi3mr_reset_types); i++) { 846 if (mpi3mr_reset_types[i].reset_type == reset_type) { 847 name = mpi3mr_reset_types[i].name; 848 break; 849 } 850 } 851 return name; 852 } 853 854 /** 855 * mpi3mr_print_fault_info - Display fault information 856 * @mrioc: Adapter instance reference 857 * 858 * Display the controller fault information if there is a 859 * controller fault. 860 * 861 * Return: Nothing. 862 */ 863 static void mpi3mr_print_fault_info(struct mpi3mr_ioc *mrioc) 864 { 865 u32 ioc_status, code, code1, code2, code3; 866 867 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 868 869 if (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT) { 870 code = readl(&mrioc->sysif_regs->fault); 871 code1 = readl(&mrioc->sysif_regs->fault_info[0]); 872 code2 = readl(&mrioc->sysif_regs->fault_info[1]); 873 code3 = readl(&mrioc->sysif_regs->fault_info[2]); 874 875 ioc_info(mrioc, 876 "fault code(0x%08X): Additional code: (0x%08X:0x%08X:0x%08X)\n", 877 code, code1, code2, code3); 878 } 879 } 880 881 /** 882 * mpi3mr_get_iocstate - Get IOC State 883 * @mrioc: Adapter instance reference 884 * 885 * Return a proper IOC state enum based on the IOC status and 886 * IOC configuration and unrcoverable state of the controller. 887 * 888 * Return: Current IOC state. 889 */ 890 enum mpi3mr_iocstate mpi3mr_get_iocstate(struct mpi3mr_ioc *mrioc) 891 { 892 u32 ioc_status, ioc_config; 893 u8 ready, enabled; 894 895 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 896 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 897 898 if (mrioc->unrecoverable) 899 return MRIOC_STATE_UNRECOVERABLE; 900 if (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT) 901 return MRIOC_STATE_FAULT; 902 903 ready = (ioc_status & MPI3_SYSIF_IOC_STATUS_READY); 904 enabled = (ioc_config & MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC); 905 906 if (ready && enabled) 907 return MRIOC_STATE_READY; 908 if ((!ready) && (!enabled)) 909 return MRIOC_STATE_RESET; 910 if ((!ready) && (enabled)) 911 return MRIOC_STATE_BECOMING_READY; 912 913 return MRIOC_STATE_RESET_REQUESTED; 914 } 915 916 /** 917 * mpi3mr_clear_reset_history - clear reset history 918 * @mrioc: Adapter instance reference 919 * 920 * Write the reset history bit in IOC status to clear the bit, 921 * if it is already set. 922 * 923 * Return: Nothing. 924 */ 925 static inline void mpi3mr_clear_reset_history(struct mpi3mr_ioc *mrioc) 926 { 927 u32 ioc_status; 928 929 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 930 if (ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) 931 writel(ioc_status, &mrioc->sysif_regs->ioc_status); 932 } 933 934 /** 935 * mpi3mr_issue_and_process_mur - Message unit Reset handler 936 * @mrioc: Adapter instance reference 937 * @reset_reason: Reset reason code 938 * 939 * Issue Message unit Reset to the controller and wait for it to 940 * be complete. 941 * 942 * Return: 0 on success, -1 on failure. 943 */ 944 static int mpi3mr_issue_and_process_mur(struct mpi3mr_ioc *mrioc, 945 u32 reset_reason) 946 { 947 u32 ioc_config, timeout, ioc_status; 948 int retval = -1; 949 950 ioc_info(mrioc, "Issuing Message unit Reset(MUR)\n"); 951 if (mrioc->unrecoverable) { 952 ioc_info(mrioc, "IOC is unrecoverable MUR not issued\n"); 953 return retval; 954 } 955 mpi3mr_clear_reset_history(mrioc); 956 writel(reset_reason, &mrioc->sysif_regs->scratchpad[0]); 957 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 958 ioc_config &= ~MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC; 959 writel(ioc_config, &mrioc->sysif_regs->ioc_configuration); 960 961 timeout = mrioc->ready_timeout * 10; 962 do { 963 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 964 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_RESET_HISTORY)) { 965 mpi3mr_clear_reset_history(mrioc); 966 ioc_config = 967 readl(&mrioc->sysif_regs->ioc_configuration); 968 if (!((ioc_status & MPI3_SYSIF_IOC_STATUS_READY) || 969 (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT) || 970 (ioc_config & MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC))) { 971 retval = 0; 972 break; 973 } 974 } 975 msleep(100); 976 } while (--timeout); 977 978 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 979 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 980 981 ioc_info(mrioc, "Base IOC Sts/Config after %s MUR is (0x%x)/(0x%x)\n", 982 (!retval) ? "successful" : "failed", ioc_status, ioc_config); 983 return retval; 984 } 985 986 /** 987 * mpi3mr_bring_ioc_ready - Bring controller to ready state 988 * @mrioc: Adapter instance reference 989 * 990 * Set Enable IOC bit in IOC configuration register and wait for 991 * the controller to become ready. 992 * 993 * Return: 0 on success, -1 on failure. 994 */ 995 static int mpi3mr_bring_ioc_ready(struct mpi3mr_ioc *mrioc) 996 { 997 u32 ioc_config, timeout; 998 enum mpi3mr_iocstate current_state; 999 1000 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 1001 ioc_config |= MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC; 1002 writel(ioc_config, &mrioc->sysif_regs->ioc_configuration); 1003 1004 timeout = mrioc->ready_timeout * 10; 1005 do { 1006 current_state = mpi3mr_get_iocstate(mrioc); 1007 if (current_state == MRIOC_STATE_READY) 1008 return 0; 1009 msleep(100); 1010 } while (--timeout); 1011 1012 return -1; 1013 } 1014 1015 /** 1016 * mpi3mr_soft_reset_success - Check softreset is success or not 1017 * @ioc_status: IOC status register value 1018 * @ioc_config: IOC config register value 1019 * 1020 * Check whether the soft reset is successful or not based on 1021 * IOC status and IOC config register values. 1022 * 1023 * Return: True when the soft reset is success, false otherwise. 1024 */ 1025 static inline bool 1026 mpi3mr_soft_reset_success(u32 ioc_status, u32 ioc_config) 1027 { 1028 if (!((ioc_status & MPI3_SYSIF_IOC_STATUS_READY) || 1029 (ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT) || 1030 (ioc_config & MPI3_SYSIF_IOC_CONFIG_ENABLE_IOC))) 1031 return true; 1032 return false; 1033 } 1034 1035 /** 1036 * mpi3mr_diagfault_success - Check diag fault is success or not 1037 * @mrioc: Adapter reference 1038 * @ioc_status: IOC status register value 1039 * 1040 * Check whether the controller hit diag reset fault code. 1041 * 1042 * Return: True when there is diag fault, false otherwise. 1043 */ 1044 static inline bool mpi3mr_diagfault_success(struct mpi3mr_ioc *mrioc, 1045 u32 ioc_status) 1046 { 1047 u32 fault; 1048 1049 if (!(ioc_status & MPI3_SYSIF_IOC_STATUS_FAULT)) 1050 return false; 1051 fault = readl(&mrioc->sysif_regs->fault) & MPI3_SYSIF_FAULT_CODE_MASK; 1052 if (fault == MPI3_SYSIF_FAULT_CODE_DIAG_FAULT_RESET) 1053 return true; 1054 return false; 1055 } 1056 1057 /** 1058 * mpi3mr_set_diagsave - Set diag save bit for snapdump 1059 * @mrioc: Adapter reference 1060 * 1061 * Set diag save bit in IOC configuration register to enable 1062 * snapdump. 1063 * 1064 * Return: Nothing. 1065 */ 1066 static inline void mpi3mr_set_diagsave(struct mpi3mr_ioc *mrioc) 1067 { 1068 u32 ioc_config; 1069 1070 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 1071 ioc_config |= MPI3_SYSIF_IOC_CONFIG_DIAG_SAVE; 1072 writel(ioc_config, &mrioc->sysif_regs->ioc_configuration); 1073 } 1074 1075 /** 1076 * mpi3mr_issue_reset - Issue reset to the controller 1077 * @mrioc: Adapter reference 1078 * @reset_type: Reset type 1079 * @reset_reason: Reset reason code 1080 * 1081 * Unlock the host diagnostic registers and write the specific 1082 * reset type to that, wait for reset acknowledgment from the 1083 * controller, if the reset is not successful retry for the 1084 * predefined number of times. 1085 * 1086 * Return: 0 on success, non-zero on failure. 1087 */ 1088 static int mpi3mr_issue_reset(struct mpi3mr_ioc *mrioc, u16 reset_type, 1089 u32 reset_reason) 1090 { 1091 int retval = -1; 1092 u8 unlock_retry_count, reset_retry_count = 0; 1093 u32 host_diagnostic, timeout, ioc_status, ioc_config; 1094 1095 pci_cfg_access_lock(mrioc->pdev); 1096 if ((reset_type != MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET) && 1097 (reset_type != MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT)) 1098 goto out; 1099 if (mrioc->unrecoverable) 1100 goto out; 1101 retry_reset: 1102 unlock_retry_count = 0; 1103 mpi3mr_clear_reset_history(mrioc); 1104 do { 1105 ioc_info(mrioc, 1106 "Write magic sequence to unlock host diag register (retry=%d)\n", 1107 ++unlock_retry_count); 1108 if (unlock_retry_count >= MPI3MR_HOSTDIAG_UNLOCK_RETRY_COUNT) { 1109 writel(reset_reason, &mrioc->sysif_regs->scratchpad[0]); 1110 mrioc->unrecoverable = 1; 1111 goto out; 1112 } 1113 1114 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_FLUSH, 1115 &mrioc->sysif_regs->write_sequence); 1116 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_1ST, 1117 &mrioc->sysif_regs->write_sequence); 1118 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_2ND, 1119 &mrioc->sysif_regs->write_sequence); 1120 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_3RD, 1121 &mrioc->sysif_regs->write_sequence); 1122 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_4TH, 1123 &mrioc->sysif_regs->write_sequence); 1124 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_5TH, 1125 &mrioc->sysif_regs->write_sequence); 1126 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_6TH, 1127 &mrioc->sysif_regs->write_sequence); 1128 usleep_range(1000, 1100); 1129 host_diagnostic = readl(&mrioc->sysif_regs->host_diagnostic); 1130 ioc_info(mrioc, 1131 "wrote magic sequence: retry_count(%d), host_diagnostic(0x%08x)\n", 1132 unlock_retry_count, host_diagnostic); 1133 } while (!(host_diagnostic & MPI3_SYSIF_HOST_DIAG_DIAG_WRITE_ENABLE)); 1134 1135 writel(reset_reason, &mrioc->sysif_regs->scratchpad[0]); 1136 ioc_info(mrioc, "%s reset due to %s(0x%x)\n", 1137 mpi3mr_reset_type_name(reset_type), 1138 mpi3mr_reset_rc_name(reset_reason), reset_reason); 1139 writel(host_diagnostic | reset_type, 1140 &mrioc->sysif_regs->host_diagnostic); 1141 timeout = mrioc->ready_timeout * 10; 1142 if (reset_type == MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET) { 1143 do { 1144 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 1145 if (ioc_status & 1146 MPI3_SYSIF_IOC_STATUS_RESET_HISTORY) { 1147 mpi3mr_clear_reset_history(mrioc); 1148 ioc_config = 1149 readl(&mrioc->sysif_regs->ioc_configuration); 1150 if (mpi3mr_soft_reset_success(ioc_status, 1151 ioc_config)) { 1152 retval = 0; 1153 break; 1154 } 1155 } 1156 msleep(100); 1157 } while (--timeout); 1158 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_2ND, 1159 &mrioc->sysif_regs->write_sequence); 1160 } else if (reset_type == MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT) { 1161 do { 1162 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 1163 if (mpi3mr_diagfault_success(mrioc, ioc_status)) { 1164 retval = 0; 1165 break; 1166 } 1167 msleep(100); 1168 } while (--timeout); 1169 mpi3mr_clear_reset_history(mrioc); 1170 writel(MPI3_SYSIF_WRITE_SEQUENCE_KEY_VALUE_2ND, 1171 &mrioc->sysif_regs->write_sequence); 1172 } 1173 if (retval && ((++reset_retry_count) < MPI3MR_MAX_RESET_RETRY_COUNT)) { 1174 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 1175 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 1176 ioc_info(mrioc, 1177 "Base IOC Sts/Config after reset try %d is (0x%x)/(0x%x)\n", 1178 reset_retry_count, ioc_status, ioc_config); 1179 goto retry_reset; 1180 } 1181 1182 out: 1183 pci_cfg_access_unlock(mrioc->pdev); 1184 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 1185 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 1186 1187 ioc_info(mrioc, 1188 "Base IOC Sts/Config after %s reset is (0x%x)/(0x%x)\n", 1189 (!retval) ? "successful" : "failed", ioc_status, 1190 ioc_config); 1191 return retval; 1192 } 1193 1194 /** 1195 * mpi3mr_admin_request_post - Post request to admin queue 1196 * @mrioc: Adapter reference 1197 * @admin_req: MPI3 request 1198 * @admin_req_sz: Request size 1199 * @ignore_reset: Ignore reset in process 1200 * 1201 * Post the MPI3 request into admin request queue and 1202 * inform the controller, if the queue is full return 1203 * appropriate error. 1204 * 1205 * Return: 0 on success, non-zero on failure. 1206 */ 1207 int mpi3mr_admin_request_post(struct mpi3mr_ioc *mrioc, void *admin_req, 1208 u16 admin_req_sz, u8 ignore_reset) 1209 { 1210 u16 areq_pi = 0, areq_ci = 0, max_entries = 0; 1211 int retval = 0; 1212 unsigned long flags; 1213 u8 *areq_entry; 1214 1215 if (mrioc->unrecoverable) { 1216 ioc_err(mrioc, "%s : Unrecoverable controller\n", __func__); 1217 return -EFAULT; 1218 } 1219 1220 spin_lock_irqsave(&mrioc->admin_req_lock, flags); 1221 areq_pi = mrioc->admin_req_pi; 1222 areq_ci = mrioc->admin_req_ci; 1223 max_entries = mrioc->num_admin_req; 1224 if ((areq_ci == (areq_pi + 1)) || ((!areq_ci) && 1225 (areq_pi == (max_entries - 1)))) { 1226 ioc_err(mrioc, "AdminReqQ full condition detected\n"); 1227 retval = -EAGAIN; 1228 goto out; 1229 } 1230 if (!ignore_reset && mrioc->reset_in_progress) { 1231 ioc_err(mrioc, "AdminReqQ submit reset in progress\n"); 1232 retval = -EAGAIN; 1233 goto out; 1234 } 1235 areq_entry = (u8 *)mrioc->admin_req_base + 1236 (areq_pi * MPI3MR_ADMIN_REQ_FRAME_SZ); 1237 memset(areq_entry, 0, MPI3MR_ADMIN_REQ_FRAME_SZ); 1238 memcpy(areq_entry, (u8 *)admin_req, admin_req_sz); 1239 1240 if (++areq_pi == max_entries) 1241 areq_pi = 0; 1242 mrioc->admin_req_pi = areq_pi; 1243 1244 writel(mrioc->admin_req_pi, &mrioc->sysif_regs->admin_request_queue_pi); 1245 1246 out: 1247 spin_unlock_irqrestore(&mrioc->admin_req_lock, flags); 1248 1249 return retval; 1250 } 1251 1252 /** 1253 * mpi3mr_free_op_req_q_segments - free request memory segments 1254 * @mrioc: Adapter instance reference 1255 * @q_idx: operational request queue index 1256 * 1257 * Free memory segments allocated for operational request queue 1258 * 1259 * Return: Nothing. 1260 */ 1261 static void mpi3mr_free_op_req_q_segments(struct mpi3mr_ioc *mrioc, u16 q_idx) 1262 { 1263 u16 j; 1264 int size; 1265 struct segments *segments; 1266 1267 segments = mrioc->req_qinfo[q_idx].q_segments; 1268 if (!segments) 1269 return; 1270 1271 if (mrioc->enable_segqueue) { 1272 size = MPI3MR_OP_REQ_Q_SEG_SIZE; 1273 if (mrioc->req_qinfo[q_idx].q_segment_list) { 1274 dma_free_coherent(&mrioc->pdev->dev, 1275 MPI3MR_MAX_SEG_LIST_SIZE, 1276 mrioc->req_qinfo[q_idx].q_segment_list, 1277 mrioc->req_qinfo[q_idx].q_segment_list_dma); 1278 mrioc->op_reply_qinfo[q_idx].q_segment_list = NULL; 1279 } 1280 } else 1281 size = mrioc->req_qinfo[q_idx].num_requests * 1282 mrioc->facts.op_req_sz; 1283 1284 for (j = 0; j < mrioc->req_qinfo[q_idx].num_segments; j++) { 1285 if (!segments[j].segment) 1286 continue; 1287 dma_free_coherent(&mrioc->pdev->dev, 1288 size, segments[j].segment, segments[j].segment_dma); 1289 segments[j].segment = NULL; 1290 } 1291 kfree(mrioc->req_qinfo[q_idx].q_segments); 1292 mrioc->req_qinfo[q_idx].q_segments = NULL; 1293 mrioc->req_qinfo[q_idx].qid = 0; 1294 } 1295 1296 /** 1297 * mpi3mr_free_op_reply_q_segments - free reply memory segments 1298 * @mrioc: Adapter instance reference 1299 * @q_idx: operational reply queue index 1300 * 1301 * Free memory segments allocated for operational reply queue 1302 * 1303 * Return: Nothing. 1304 */ 1305 static void mpi3mr_free_op_reply_q_segments(struct mpi3mr_ioc *mrioc, u16 q_idx) 1306 { 1307 u16 j; 1308 int size; 1309 struct segments *segments; 1310 1311 segments = mrioc->op_reply_qinfo[q_idx].q_segments; 1312 if (!segments) 1313 return; 1314 1315 if (mrioc->enable_segqueue) { 1316 size = MPI3MR_OP_REP_Q_SEG_SIZE; 1317 if (mrioc->op_reply_qinfo[q_idx].q_segment_list) { 1318 dma_free_coherent(&mrioc->pdev->dev, 1319 MPI3MR_MAX_SEG_LIST_SIZE, 1320 mrioc->op_reply_qinfo[q_idx].q_segment_list, 1321 mrioc->op_reply_qinfo[q_idx].q_segment_list_dma); 1322 mrioc->op_reply_qinfo[q_idx].q_segment_list = NULL; 1323 } 1324 } else 1325 size = mrioc->op_reply_qinfo[q_idx].segment_qd * 1326 mrioc->op_reply_desc_sz; 1327 1328 for (j = 0; j < mrioc->op_reply_qinfo[q_idx].num_segments; j++) { 1329 if (!segments[j].segment) 1330 continue; 1331 dma_free_coherent(&mrioc->pdev->dev, 1332 size, segments[j].segment, segments[j].segment_dma); 1333 segments[j].segment = NULL; 1334 } 1335 1336 kfree(mrioc->op_reply_qinfo[q_idx].q_segments); 1337 mrioc->op_reply_qinfo[q_idx].q_segments = NULL; 1338 mrioc->op_reply_qinfo[q_idx].qid = 0; 1339 } 1340 1341 /** 1342 * mpi3mr_delete_op_reply_q - delete operational reply queue 1343 * @mrioc: Adapter instance reference 1344 * @qidx: operational reply queue index 1345 * 1346 * Delete operatinal reply queue by issuing MPI request 1347 * through admin queue. 1348 * 1349 * Return: 0 on success, non-zero on failure. 1350 */ 1351 static int mpi3mr_delete_op_reply_q(struct mpi3mr_ioc *mrioc, u16 qidx) 1352 { 1353 struct mpi3_delete_reply_queue_request delq_req; 1354 int retval = 0; 1355 u16 reply_qid = 0, midx; 1356 1357 reply_qid = mrioc->op_reply_qinfo[qidx].qid; 1358 1359 midx = REPLY_QUEUE_IDX_TO_MSIX_IDX(qidx, mrioc->op_reply_q_offset); 1360 1361 if (!reply_qid) { 1362 retval = -1; 1363 ioc_err(mrioc, "Issue DelRepQ: called with invalid ReqQID\n"); 1364 goto out; 1365 } 1366 1367 memset(&delq_req, 0, sizeof(delq_req)); 1368 mutex_lock(&mrioc->init_cmds.mutex); 1369 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 1370 retval = -1; 1371 ioc_err(mrioc, "Issue DelRepQ: Init command is in use\n"); 1372 mutex_unlock(&mrioc->init_cmds.mutex); 1373 goto out; 1374 } 1375 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 1376 mrioc->init_cmds.is_waiting = 1; 1377 mrioc->init_cmds.callback = NULL; 1378 delq_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 1379 delq_req.function = MPI3_FUNCTION_DELETE_REPLY_QUEUE; 1380 delq_req.queue_id = cpu_to_le16(reply_qid); 1381 1382 init_completion(&mrioc->init_cmds.done); 1383 retval = mpi3mr_admin_request_post(mrioc, &delq_req, sizeof(delq_req), 1384 1); 1385 if (retval) { 1386 ioc_err(mrioc, "Issue DelRepQ: Admin Post failed\n"); 1387 goto out_unlock; 1388 } 1389 wait_for_completion_timeout(&mrioc->init_cmds.done, 1390 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 1391 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 1392 ioc_err(mrioc, "Issue DelRepQ: command timed out\n"); 1393 mpi3mr_set_diagsave(mrioc); 1394 mpi3mr_issue_reset(mrioc, 1395 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 1396 MPI3MR_RESET_FROM_DELREPQ_TIMEOUT); 1397 mrioc->unrecoverable = 1; 1398 1399 retval = -1; 1400 goto out_unlock; 1401 } 1402 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 1403 != MPI3_IOCSTATUS_SUCCESS) { 1404 ioc_err(mrioc, 1405 "Issue DelRepQ: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 1406 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 1407 mrioc->init_cmds.ioc_loginfo); 1408 retval = -1; 1409 goto out_unlock; 1410 } 1411 mrioc->intr_info[midx].op_reply_q = NULL; 1412 1413 mpi3mr_free_op_reply_q_segments(mrioc, qidx); 1414 out_unlock: 1415 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 1416 mutex_unlock(&mrioc->init_cmds.mutex); 1417 out: 1418 1419 return retval; 1420 } 1421 1422 /** 1423 * mpi3mr_alloc_op_reply_q_segments -Alloc segmented reply pool 1424 * @mrioc: Adapter instance reference 1425 * @qidx: request queue index 1426 * 1427 * Allocate segmented memory pools for operational reply 1428 * queue. 1429 * 1430 * Return: 0 on success, non-zero on failure. 1431 */ 1432 static int mpi3mr_alloc_op_reply_q_segments(struct mpi3mr_ioc *mrioc, u16 qidx) 1433 { 1434 struct op_reply_qinfo *op_reply_q = mrioc->op_reply_qinfo + qidx; 1435 int i, size; 1436 u64 *q_segment_list_entry = NULL; 1437 struct segments *segments; 1438 1439 if (mrioc->enable_segqueue) { 1440 op_reply_q->segment_qd = 1441 MPI3MR_OP_REP_Q_SEG_SIZE / mrioc->op_reply_desc_sz; 1442 1443 size = MPI3MR_OP_REP_Q_SEG_SIZE; 1444 1445 op_reply_q->q_segment_list = dma_alloc_coherent(&mrioc->pdev->dev, 1446 MPI3MR_MAX_SEG_LIST_SIZE, &op_reply_q->q_segment_list_dma, 1447 GFP_KERNEL); 1448 if (!op_reply_q->q_segment_list) 1449 return -ENOMEM; 1450 q_segment_list_entry = (u64 *)op_reply_q->q_segment_list; 1451 } else { 1452 op_reply_q->segment_qd = op_reply_q->num_replies; 1453 size = op_reply_q->num_replies * mrioc->op_reply_desc_sz; 1454 } 1455 1456 op_reply_q->num_segments = DIV_ROUND_UP(op_reply_q->num_replies, 1457 op_reply_q->segment_qd); 1458 1459 op_reply_q->q_segments = kcalloc(op_reply_q->num_segments, 1460 sizeof(struct segments), GFP_KERNEL); 1461 if (!op_reply_q->q_segments) 1462 return -ENOMEM; 1463 1464 segments = op_reply_q->q_segments; 1465 for (i = 0; i < op_reply_q->num_segments; i++) { 1466 segments[i].segment = 1467 dma_alloc_coherent(&mrioc->pdev->dev, 1468 size, &segments[i].segment_dma, GFP_KERNEL); 1469 if (!segments[i].segment) 1470 return -ENOMEM; 1471 if (mrioc->enable_segqueue) 1472 q_segment_list_entry[i] = 1473 (unsigned long)segments[i].segment_dma; 1474 } 1475 1476 return 0; 1477 } 1478 1479 /** 1480 * mpi3mr_alloc_op_req_q_segments - Alloc segmented req pool. 1481 * @mrioc: Adapter instance reference 1482 * @qidx: request queue index 1483 * 1484 * Allocate segmented memory pools for operational request 1485 * queue. 1486 * 1487 * Return: 0 on success, non-zero on failure. 1488 */ 1489 static int mpi3mr_alloc_op_req_q_segments(struct mpi3mr_ioc *mrioc, u16 qidx) 1490 { 1491 struct op_req_qinfo *op_req_q = mrioc->req_qinfo + qidx; 1492 int i, size; 1493 u64 *q_segment_list_entry = NULL; 1494 struct segments *segments; 1495 1496 if (mrioc->enable_segqueue) { 1497 op_req_q->segment_qd = 1498 MPI3MR_OP_REQ_Q_SEG_SIZE / mrioc->facts.op_req_sz; 1499 1500 size = MPI3MR_OP_REQ_Q_SEG_SIZE; 1501 1502 op_req_q->q_segment_list = dma_alloc_coherent(&mrioc->pdev->dev, 1503 MPI3MR_MAX_SEG_LIST_SIZE, &op_req_q->q_segment_list_dma, 1504 GFP_KERNEL); 1505 if (!op_req_q->q_segment_list) 1506 return -ENOMEM; 1507 q_segment_list_entry = (u64 *)op_req_q->q_segment_list; 1508 1509 } else { 1510 op_req_q->segment_qd = op_req_q->num_requests; 1511 size = op_req_q->num_requests * mrioc->facts.op_req_sz; 1512 } 1513 1514 op_req_q->num_segments = DIV_ROUND_UP(op_req_q->num_requests, 1515 op_req_q->segment_qd); 1516 1517 op_req_q->q_segments = kcalloc(op_req_q->num_segments, 1518 sizeof(struct segments), GFP_KERNEL); 1519 if (!op_req_q->q_segments) 1520 return -ENOMEM; 1521 1522 segments = op_req_q->q_segments; 1523 for (i = 0; i < op_req_q->num_segments; i++) { 1524 segments[i].segment = 1525 dma_alloc_coherent(&mrioc->pdev->dev, 1526 size, &segments[i].segment_dma, GFP_KERNEL); 1527 if (!segments[i].segment) 1528 return -ENOMEM; 1529 if (mrioc->enable_segqueue) 1530 q_segment_list_entry[i] = 1531 (unsigned long)segments[i].segment_dma; 1532 } 1533 1534 return 0; 1535 } 1536 1537 /** 1538 * mpi3mr_create_op_reply_q - create operational reply queue 1539 * @mrioc: Adapter instance reference 1540 * @qidx: operational reply queue index 1541 * 1542 * Create operatinal reply queue by issuing MPI request 1543 * through admin queue. 1544 * 1545 * Return: 0 on success, non-zero on failure. 1546 */ 1547 static int mpi3mr_create_op_reply_q(struct mpi3mr_ioc *mrioc, u16 qidx) 1548 { 1549 struct mpi3_create_reply_queue_request create_req; 1550 struct op_reply_qinfo *op_reply_q = mrioc->op_reply_qinfo + qidx; 1551 int retval = 0; 1552 u16 reply_qid = 0, midx; 1553 1554 reply_qid = op_reply_q->qid; 1555 1556 midx = REPLY_QUEUE_IDX_TO_MSIX_IDX(qidx, mrioc->op_reply_q_offset); 1557 1558 if (reply_qid) { 1559 retval = -1; 1560 ioc_err(mrioc, "CreateRepQ: called for duplicate qid %d\n", 1561 reply_qid); 1562 1563 return retval; 1564 } 1565 1566 reply_qid = qidx + 1; 1567 op_reply_q->num_replies = MPI3MR_OP_REP_Q_QD; 1568 op_reply_q->ci = 0; 1569 op_reply_q->ephase = 1; 1570 atomic_set(&op_reply_q->pend_ios, 0); 1571 atomic_set(&op_reply_q->in_use, 0); 1572 op_reply_q->enable_irq_poll = false; 1573 1574 if (!op_reply_q->q_segments) { 1575 retval = mpi3mr_alloc_op_reply_q_segments(mrioc, qidx); 1576 if (retval) { 1577 mpi3mr_free_op_reply_q_segments(mrioc, qidx); 1578 goto out; 1579 } 1580 } 1581 1582 memset(&create_req, 0, sizeof(create_req)); 1583 mutex_lock(&mrioc->init_cmds.mutex); 1584 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 1585 retval = -1; 1586 ioc_err(mrioc, "CreateRepQ: Init command is in use\n"); 1587 goto out_unlock; 1588 } 1589 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 1590 mrioc->init_cmds.is_waiting = 1; 1591 mrioc->init_cmds.callback = NULL; 1592 create_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 1593 create_req.function = MPI3_FUNCTION_CREATE_REPLY_QUEUE; 1594 create_req.queue_id = cpu_to_le16(reply_qid); 1595 create_req.flags = MPI3_CREATE_REPLY_QUEUE_FLAGS_INT_ENABLE_ENABLE; 1596 create_req.msix_index = cpu_to_le16(mrioc->intr_info[midx].msix_index); 1597 if (mrioc->enable_segqueue) { 1598 create_req.flags |= 1599 MPI3_CREATE_REQUEST_QUEUE_FLAGS_SEGMENTED_SEGMENTED; 1600 create_req.base_address = cpu_to_le64( 1601 op_reply_q->q_segment_list_dma); 1602 } else 1603 create_req.base_address = cpu_to_le64( 1604 op_reply_q->q_segments[0].segment_dma); 1605 1606 create_req.size = cpu_to_le16(op_reply_q->num_replies); 1607 1608 init_completion(&mrioc->init_cmds.done); 1609 retval = mpi3mr_admin_request_post(mrioc, &create_req, 1610 sizeof(create_req), 1); 1611 if (retval) { 1612 ioc_err(mrioc, "CreateRepQ: Admin Post failed\n"); 1613 goto out_unlock; 1614 } 1615 wait_for_completion_timeout(&mrioc->init_cmds.done, 1616 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 1617 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 1618 ioc_err(mrioc, "CreateRepQ: command timed out\n"); 1619 mpi3mr_set_diagsave(mrioc); 1620 mpi3mr_issue_reset(mrioc, 1621 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 1622 MPI3MR_RESET_FROM_CREATEREPQ_TIMEOUT); 1623 mrioc->unrecoverable = 1; 1624 retval = -1; 1625 goto out_unlock; 1626 } 1627 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 1628 != MPI3_IOCSTATUS_SUCCESS) { 1629 ioc_err(mrioc, 1630 "CreateRepQ: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 1631 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 1632 mrioc->init_cmds.ioc_loginfo); 1633 retval = -1; 1634 goto out_unlock; 1635 } 1636 op_reply_q->qid = reply_qid; 1637 mrioc->intr_info[midx].op_reply_q = op_reply_q; 1638 1639 out_unlock: 1640 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 1641 mutex_unlock(&mrioc->init_cmds.mutex); 1642 out: 1643 1644 return retval; 1645 } 1646 1647 /** 1648 * mpi3mr_create_op_req_q - create operational request queue 1649 * @mrioc: Adapter instance reference 1650 * @idx: operational request queue index 1651 * @reply_qid: Reply queue ID 1652 * 1653 * Create operatinal request queue by issuing MPI request 1654 * through admin queue. 1655 * 1656 * Return: 0 on success, non-zero on failure. 1657 */ 1658 static int mpi3mr_create_op_req_q(struct mpi3mr_ioc *mrioc, u16 idx, 1659 u16 reply_qid) 1660 { 1661 struct mpi3_create_request_queue_request create_req; 1662 struct op_req_qinfo *op_req_q = mrioc->req_qinfo + idx; 1663 int retval = 0; 1664 u16 req_qid = 0; 1665 1666 req_qid = op_req_q->qid; 1667 1668 if (req_qid) { 1669 retval = -1; 1670 ioc_err(mrioc, "CreateReqQ: called for duplicate qid %d\n", 1671 req_qid); 1672 1673 return retval; 1674 } 1675 req_qid = idx + 1; 1676 1677 op_req_q->num_requests = MPI3MR_OP_REQ_Q_QD; 1678 op_req_q->ci = 0; 1679 op_req_q->pi = 0; 1680 op_req_q->reply_qid = reply_qid; 1681 spin_lock_init(&op_req_q->q_lock); 1682 1683 if (!op_req_q->q_segments) { 1684 retval = mpi3mr_alloc_op_req_q_segments(mrioc, idx); 1685 if (retval) { 1686 mpi3mr_free_op_req_q_segments(mrioc, idx); 1687 goto out; 1688 } 1689 } 1690 1691 memset(&create_req, 0, sizeof(create_req)); 1692 mutex_lock(&mrioc->init_cmds.mutex); 1693 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 1694 retval = -1; 1695 ioc_err(mrioc, "CreateReqQ: Init command is in use\n"); 1696 goto out_unlock; 1697 } 1698 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 1699 mrioc->init_cmds.is_waiting = 1; 1700 mrioc->init_cmds.callback = NULL; 1701 create_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 1702 create_req.function = MPI3_FUNCTION_CREATE_REQUEST_QUEUE; 1703 create_req.queue_id = cpu_to_le16(req_qid); 1704 if (mrioc->enable_segqueue) { 1705 create_req.flags = 1706 MPI3_CREATE_REQUEST_QUEUE_FLAGS_SEGMENTED_SEGMENTED; 1707 create_req.base_address = cpu_to_le64( 1708 op_req_q->q_segment_list_dma); 1709 } else 1710 create_req.base_address = cpu_to_le64( 1711 op_req_q->q_segments[0].segment_dma); 1712 create_req.reply_queue_id = cpu_to_le16(reply_qid); 1713 create_req.size = cpu_to_le16(op_req_q->num_requests); 1714 1715 init_completion(&mrioc->init_cmds.done); 1716 retval = mpi3mr_admin_request_post(mrioc, &create_req, 1717 sizeof(create_req), 1); 1718 if (retval) { 1719 ioc_err(mrioc, "CreateReqQ: Admin Post failed\n"); 1720 goto out_unlock; 1721 } 1722 wait_for_completion_timeout(&mrioc->init_cmds.done, 1723 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 1724 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 1725 ioc_err(mrioc, "CreateReqQ: command timed out\n"); 1726 mpi3mr_set_diagsave(mrioc); 1727 if (mpi3mr_issue_reset(mrioc, 1728 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 1729 MPI3MR_RESET_FROM_CREATEREQQ_TIMEOUT)) 1730 mrioc->unrecoverable = 1; 1731 retval = -1; 1732 goto out_unlock; 1733 } 1734 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 1735 != MPI3_IOCSTATUS_SUCCESS) { 1736 ioc_err(mrioc, 1737 "CreateReqQ: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 1738 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 1739 mrioc->init_cmds.ioc_loginfo); 1740 retval = -1; 1741 goto out_unlock; 1742 } 1743 op_req_q->qid = req_qid; 1744 1745 out_unlock: 1746 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 1747 mutex_unlock(&mrioc->init_cmds.mutex); 1748 out: 1749 1750 return retval; 1751 } 1752 1753 /** 1754 * mpi3mr_create_op_queues - create operational queue pairs 1755 * @mrioc: Adapter instance reference 1756 * 1757 * Allocate memory for operational queue meta data and call 1758 * create request and reply queue functions. 1759 * 1760 * Return: 0 on success, non-zero on failures. 1761 */ 1762 static int mpi3mr_create_op_queues(struct mpi3mr_ioc *mrioc) 1763 { 1764 int retval = 0; 1765 u16 num_queues = 0, i = 0, msix_count_op_q = 1; 1766 1767 num_queues = min_t(int, mrioc->facts.max_op_reply_q, 1768 mrioc->facts.max_op_req_q); 1769 1770 msix_count_op_q = 1771 mrioc->intr_info_count - mrioc->op_reply_q_offset; 1772 if (!mrioc->num_queues) 1773 mrioc->num_queues = min_t(int, num_queues, msix_count_op_q); 1774 num_queues = mrioc->num_queues; 1775 ioc_info(mrioc, "Trying to create %d Operational Q pairs\n", 1776 num_queues); 1777 1778 if (!mrioc->req_qinfo) { 1779 mrioc->req_qinfo = kcalloc(num_queues, 1780 sizeof(struct op_req_qinfo), GFP_KERNEL); 1781 if (!mrioc->req_qinfo) { 1782 retval = -1; 1783 goto out_failed; 1784 } 1785 1786 mrioc->op_reply_qinfo = kzalloc(sizeof(struct op_reply_qinfo) * 1787 num_queues, GFP_KERNEL); 1788 if (!mrioc->op_reply_qinfo) { 1789 retval = -1; 1790 goto out_failed; 1791 } 1792 } 1793 1794 if (mrioc->enable_segqueue) 1795 ioc_info(mrioc, 1796 "allocating operational queues through segmented queues\n"); 1797 1798 for (i = 0; i < num_queues; i++) { 1799 if (mpi3mr_create_op_reply_q(mrioc, i)) { 1800 ioc_err(mrioc, "Cannot create OP RepQ %d\n", i); 1801 break; 1802 } 1803 if (mpi3mr_create_op_req_q(mrioc, i, 1804 mrioc->op_reply_qinfo[i].qid)) { 1805 ioc_err(mrioc, "Cannot create OP ReqQ %d\n", i); 1806 mpi3mr_delete_op_reply_q(mrioc, i); 1807 break; 1808 } 1809 } 1810 1811 if (i == 0) { 1812 /* Not even one queue is created successfully*/ 1813 retval = -1; 1814 goto out_failed; 1815 } 1816 mrioc->num_op_reply_q = mrioc->num_op_req_q = i; 1817 ioc_info(mrioc, "Successfully created %d Operational Q pairs\n", 1818 mrioc->num_op_reply_q); 1819 1820 return retval; 1821 out_failed: 1822 kfree(mrioc->req_qinfo); 1823 mrioc->req_qinfo = NULL; 1824 1825 kfree(mrioc->op_reply_qinfo); 1826 mrioc->op_reply_qinfo = NULL; 1827 1828 return retval; 1829 } 1830 1831 /** 1832 * mpi3mr_op_request_post - Post request to operational queue 1833 * @mrioc: Adapter reference 1834 * @op_req_q: Operational request queue info 1835 * @req: MPI3 request 1836 * 1837 * Post the MPI3 request into operational request queue and 1838 * inform the controller, if the queue is full return 1839 * appropriate error. 1840 * 1841 * Return: 0 on success, non-zero on failure. 1842 */ 1843 int mpi3mr_op_request_post(struct mpi3mr_ioc *mrioc, 1844 struct op_req_qinfo *op_req_q, u8 *req) 1845 { 1846 u16 pi = 0, max_entries, reply_qidx = 0, midx; 1847 int retval = 0; 1848 unsigned long flags; 1849 u8 *req_entry; 1850 void *segment_base_addr; 1851 u16 req_sz = mrioc->facts.op_req_sz; 1852 struct segments *segments = op_req_q->q_segments; 1853 1854 reply_qidx = op_req_q->reply_qid - 1; 1855 1856 if (mrioc->unrecoverable) 1857 return -EFAULT; 1858 1859 spin_lock_irqsave(&op_req_q->q_lock, flags); 1860 pi = op_req_q->pi; 1861 max_entries = op_req_q->num_requests; 1862 1863 if (mpi3mr_check_req_qfull(op_req_q)) { 1864 midx = REPLY_QUEUE_IDX_TO_MSIX_IDX( 1865 reply_qidx, mrioc->op_reply_q_offset); 1866 mpi3mr_process_op_reply_q(mrioc, &mrioc->intr_info[midx]); 1867 1868 if (mpi3mr_check_req_qfull(op_req_q)) { 1869 retval = -EAGAIN; 1870 goto out; 1871 } 1872 } 1873 1874 if (mrioc->reset_in_progress) { 1875 ioc_err(mrioc, "OpReqQ submit reset in progress\n"); 1876 retval = -EAGAIN; 1877 goto out; 1878 } 1879 1880 segment_base_addr = segments[pi / op_req_q->segment_qd].segment; 1881 req_entry = (u8 *)segment_base_addr + 1882 ((pi % op_req_q->segment_qd) * req_sz); 1883 1884 memset(req_entry, 0, req_sz); 1885 memcpy(req_entry, req, MPI3MR_ADMIN_REQ_FRAME_SZ); 1886 1887 if (++pi == max_entries) 1888 pi = 0; 1889 op_req_q->pi = pi; 1890 1891 if (atomic_inc_return(&mrioc->op_reply_qinfo[reply_qidx].pend_ios) 1892 > MPI3MR_IRQ_POLL_TRIGGER_IOCOUNT) 1893 mrioc->op_reply_qinfo[reply_qidx].enable_irq_poll = true; 1894 1895 writel(op_req_q->pi, 1896 &mrioc->sysif_regs->oper_queue_indexes[reply_qidx].producer_index); 1897 1898 out: 1899 spin_unlock_irqrestore(&op_req_q->q_lock, flags); 1900 return retval; 1901 } 1902 1903 /** 1904 * mpi3mr_sync_timestamp - Issue time stamp sync request 1905 * @mrioc: Adapter reference 1906 * 1907 * Issue IO unit control MPI request to synchornize firmware 1908 * timestamp with host time. 1909 * 1910 * Return: 0 on success, non-zero on failure. 1911 */ 1912 static int mpi3mr_sync_timestamp(struct mpi3mr_ioc *mrioc) 1913 { 1914 ktime_t current_time; 1915 struct mpi3_iounit_control_request iou_ctrl; 1916 int retval = 0; 1917 1918 memset(&iou_ctrl, 0, sizeof(iou_ctrl)); 1919 mutex_lock(&mrioc->init_cmds.mutex); 1920 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 1921 retval = -1; 1922 ioc_err(mrioc, "Issue IOUCTL time_stamp: command is in use\n"); 1923 mutex_unlock(&mrioc->init_cmds.mutex); 1924 goto out; 1925 } 1926 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 1927 mrioc->init_cmds.is_waiting = 1; 1928 mrioc->init_cmds.callback = NULL; 1929 iou_ctrl.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 1930 iou_ctrl.function = MPI3_FUNCTION_IO_UNIT_CONTROL; 1931 iou_ctrl.operation = MPI3_CTRL_OP_UPDATE_TIMESTAMP; 1932 current_time = ktime_get_real(); 1933 iou_ctrl.param64[0] = cpu_to_le64(ktime_to_ms(current_time)); 1934 1935 init_completion(&mrioc->init_cmds.done); 1936 retval = mpi3mr_admin_request_post(mrioc, &iou_ctrl, 1937 sizeof(iou_ctrl), 0); 1938 if (retval) { 1939 ioc_err(mrioc, "Issue IOUCTL time_stamp: Admin Post failed\n"); 1940 goto out_unlock; 1941 } 1942 1943 wait_for_completion_timeout(&mrioc->init_cmds.done, 1944 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 1945 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 1946 ioc_err(mrioc, "Issue IOUCTL time_stamp: command timed out\n"); 1947 mrioc->init_cmds.is_waiting = 0; 1948 mpi3mr_soft_reset_handler(mrioc, 1949 MPI3MR_RESET_FROM_TSU_TIMEOUT, 1); 1950 retval = -1; 1951 goto out_unlock; 1952 } 1953 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 1954 != MPI3_IOCSTATUS_SUCCESS) { 1955 ioc_err(mrioc, 1956 "Issue IOUCTL time_stamp: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 1957 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 1958 mrioc->init_cmds.ioc_loginfo); 1959 retval = -1; 1960 goto out_unlock; 1961 } 1962 1963 out_unlock: 1964 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 1965 mutex_unlock(&mrioc->init_cmds.mutex); 1966 1967 out: 1968 return retval; 1969 } 1970 1971 /** 1972 * mpi3mr_watchdog_work - watchdog thread to monitor faults 1973 * @work: work struct 1974 * 1975 * Watch dog work periodically executed (1 second interval) to 1976 * monitor firmware fault and to issue periodic timer sync to 1977 * the firmware. 1978 * 1979 * Return: Nothing. 1980 */ 1981 static void mpi3mr_watchdog_work(struct work_struct *work) 1982 { 1983 struct mpi3mr_ioc *mrioc = 1984 container_of(work, struct mpi3mr_ioc, watchdog_work.work); 1985 unsigned long flags; 1986 enum mpi3mr_iocstate ioc_state; 1987 u32 fault, host_diagnostic; 1988 1989 if (mrioc->ts_update_counter++ >= MPI3MR_TSUPDATE_INTERVAL) { 1990 mrioc->ts_update_counter = 0; 1991 mpi3mr_sync_timestamp(mrioc); 1992 } 1993 1994 /*Check for fault state every one second and issue Soft reset*/ 1995 ioc_state = mpi3mr_get_iocstate(mrioc); 1996 if (ioc_state == MRIOC_STATE_FAULT) { 1997 fault = readl(&mrioc->sysif_regs->fault) & 1998 MPI3_SYSIF_FAULT_CODE_MASK; 1999 host_diagnostic = readl(&mrioc->sysif_regs->host_diagnostic); 2000 if (host_diagnostic & MPI3_SYSIF_HOST_DIAG_SAVE_IN_PROGRESS) { 2001 if (!mrioc->diagsave_timeout) { 2002 mpi3mr_print_fault_info(mrioc); 2003 ioc_warn(mrioc, "Diag save in progress\n"); 2004 } 2005 if ((mrioc->diagsave_timeout++) <= 2006 MPI3_SYSIF_DIAG_SAVE_TIMEOUT) 2007 goto schedule_work; 2008 } else 2009 mpi3mr_print_fault_info(mrioc); 2010 mrioc->diagsave_timeout = 0; 2011 2012 if (fault == MPI3_SYSIF_FAULT_CODE_FACTORY_RESET) { 2013 ioc_info(mrioc, 2014 "Factory Reset fault occurred marking controller as unrecoverable" 2015 ); 2016 mrioc->unrecoverable = 1; 2017 goto out; 2018 } 2019 2020 if ((fault == MPI3_SYSIF_FAULT_CODE_DIAG_FAULT_RESET) || 2021 (fault == MPI3_SYSIF_FAULT_CODE_SOFT_RESET_IN_PROGRESS) || 2022 (mrioc->reset_in_progress)) 2023 goto out; 2024 if (fault == MPI3_SYSIF_FAULT_CODE_CI_ACTIVATION_RESET) 2025 mpi3mr_soft_reset_handler(mrioc, 2026 MPI3MR_RESET_FROM_CIACTIV_FAULT, 0); 2027 else 2028 mpi3mr_soft_reset_handler(mrioc, 2029 MPI3MR_RESET_FROM_FAULT_WATCH, 0); 2030 } 2031 2032 schedule_work: 2033 spin_lock_irqsave(&mrioc->watchdog_lock, flags); 2034 if (mrioc->watchdog_work_q) 2035 queue_delayed_work(mrioc->watchdog_work_q, 2036 &mrioc->watchdog_work, 2037 msecs_to_jiffies(MPI3MR_WATCHDOG_INTERVAL)); 2038 spin_unlock_irqrestore(&mrioc->watchdog_lock, flags); 2039 out: 2040 return; 2041 } 2042 2043 /** 2044 * mpi3mr_start_watchdog - Start watchdog 2045 * @mrioc: Adapter instance reference 2046 * 2047 * Create and start the watchdog thread to monitor controller 2048 * faults. 2049 * 2050 * Return: Nothing. 2051 */ 2052 void mpi3mr_start_watchdog(struct mpi3mr_ioc *mrioc) 2053 { 2054 if (mrioc->watchdog_work_q) 2055 return; 2056 2057 INIT_DELAYED_WORK(&mrioc->watchdog_work, mpi3mr_watchdog_work); 2058 snprintf(mrioc->watchdog_work_q_name, 2059 sizeof(mrioc->watchdog_work_q_name), "watchdog_%s%d", mrioc->name, 2060 mrioc->id); 2061 mrioc->watchdog_work_q = 2062 create_singlethread_workqueue(mrioc->watchdog_work_q_name); 2063 if (!mrioc->watchdog_work_q) { 2064 ioc_err(mrioc, "%s: failed (line=%d)\n", __func__, __LINE__); 2065 return; 2066 } 2067 2068 if (mrioc->watchdog_work_q) 2069 queue_delayed_work(mrioc->watchdog_work_q, 2070 &mrioc->watchdog_work, 2071 msecs_to_jiffies(MPI3MR_WATCHDOG_INTERVAL)); 2072 } 2073 2074 /** 2075 * mpi3mr_stop_watchdog - Stop watchdog 2076 * @mrioc: Adapter instance reference 2077 * 2078 * Stop the watchdog thread created to monitor controller 2079 * faults. 2080 * 2081 * Return: Nothing. 2082 */ 2083 void mpi3mr_stop_watchdog(struct mpi3mr_ioc *mrioc) 2084 { 2085 unsigned long flags; 2086 struct workqueue_struct *wq; 2087 2088 spin_lock_irqsave(&mrioc->watchdog_lock, flags); 2089 wq = mrioc->watchdog_work_q; 2090 mrioc->watchdog_work_q = NULL; 2091 spin_unlock_irqrestore(&mrioc->watchdog_lock, flags); 2092 if (wq) { 2093 if (!cancel_delayed_work_sync(&mrioc->watchdog_work)) 2094 flush_workqueue(wq); 2095 destroy_workqueue(wq); 2096 } 2097 } 2098 2099 /** 2100 * mpi3mr_kill_ioc - Kill the controller 2101 * @mrioc: Adapter instance reference 2102 * @reason: reason for the failure. 2103 * 2104 * If fault debug is enabled, display the fault info else issue 2105 * diag fault and freeze the system for controller debug 2106 * purpose. 2107 * 2108 * Return: Nothing. 2109 */ 2110 static void mpi3mr_kill_ioc(struct mpi3mr_ioc *mrioc, u32 reason) 2111 { 2112 enum mpi3mr_iocstate ioc_state; 2113 2114 if (!mrioc->fault_dbg) 2115 return; 2116 2117 dump_stack(); 2118 2119 ioc_state = mpi3mr_get_iocstate(mrioc); 2120 if (ioc_state == MRIOC_STATE_FAULT) 2121 mpi3mr_print_fault_info(mrioc); 2122 else { 2123 ioc_err(mrioc, "Firmware is halted due to the reason %d\n", 2124 reason); 2125 mpi3mr_diagfault_reset_handler(mrioc, reason); 2126 } 2127 if (mrioc->fault_dbg == 2) 2128 for (;;) 2129 ; 2130 else 2131 panic("panic in %s\n", __func__); 2132 } 2133 2134 /** 2135 * mpi3mr_setup_admin_qpair - Setup admin queue pair 2136 * @mrioc: Adapter instance reference 2137 * 2138 * Allocate memory for admin queue pair if required and register 2139 * the admin queue with the controller. 2140 * 2141 * Return: 0 on success, non-zero on failures. 2142 */ 2143 static int mpi3mr_setup_admin_qpair(struct mpi3mr_ioc *mrioc) 2144 { 2145 int retval = 0; 2146 u32 num_admin_entries = 0; 2147 2148 mrioc->admin_req_q_sz = MPI3MR_ADMIN_REQ_Q_SIZE; 2149 mrioc->num_admin_req = mrioc->admin_req_q_sz / 2150 MPI3MR_ADMIN_REQ_FRAME_SZ; 2151 mrioc->admin_req_ci = mrioc->admin_req_pi = 0; 2152 mrioc->admin_req_base = NULL; 2153 2154 mrioc->admin_reply_q_sz = MPI3MR_ADMIN_REPLY_Q_SIZE; 2155 mrioc->num_admin_replies = mrioc->admin_reply_q_sz / 2156 MPI3MR_ADMIN_REPLY_FRAME_SZ; 2157 mrioc->admin_reply_ci = 0; 2158 mrioc->admin_reply_ephase = 1; 2159 mrioc->admin_reply_base = NULL; 2160 2161 if (!mrioc->admin_req_base) { 2162 mrioc->admin_req_base = dma_alloc_coherent(&mrioc->pdev->dev, 2163 mrioc->admin_req_q_sz, &mrioc->admin_req_dma, GFP_KERNEL); 2164 2165 if (!mrioc->admin_req_base) { 2166 retval = -1; 2167 goto out_failed; 2168 } 2169 2170 mrioc->admin_reply_base = dma_alloc_coherent(&mrioc->pdev->dev, 2171 mrioc->admin_reply_q_sz, &mrioc->admin_reply_dma, 2172 GFP_KERNEL); 2173 2174 if (!mrioc->admin_reply_base) { 2175 retval = -1; 2176 goto out_failed; 2177 } 2178 } 2179 2180 num_admin_entries = (mrioc->num_admin_replies << 16) | 2181 (mrioc->num_admin_req); 2182 writel(num_admin_entries, &mrioc->sysif_regs->admin_queue_num_entries); 2183 mpi3mr_writeq(mrioc->admin_req_dma, 2184 &mrioc->sysif_regs->admin_request_queue_address); 2185 mpi3mr_writeq(mrioc->admin_reply_dma, 2186 &mrioc->sysif_regs->admin_reply_queue_address); 2187 writel(mrioc->admin_req_pi, &mrioc->sysif_regs->admin_request_queue_pi); 2188 writel(mrioc->admin_reply_ci, &mrioc->sysif_regs->admin_reply_queue_ci); 2189 return retval; 2190 2191 out_failed: 2192 2193 if (mrioc->admin_reply_base) { 2194 dma_free_coherent(&mrioc->pdev->dev, mrioc->admin_reply_q_sz, 2195 mrioc->admin_reply_base, mrioc->admin_reply_dma); 2196 mrioc->admin_reply_base = NULL; 2197 } 2198 if (mrioc->admin_req_base) { 2199 dma_free_coherent(&mrioc->pdev->dev, mrioc->admin_req_q_sz, 2200 mrioc->admin_req_base, mrioc->admin_req_dma); 2201 mrioc->admin_req_base = NULL; 2202 } 2203 return retval; 2204 } 2205 2206 /** 2207 * mpi3mr_issue_iocfacts - Send IOC Facts 2208 * @mrioc: Adapter instance reference 2209 * @facts_data: Cached IOC facts data 2210 * 2211 * Issue IOC Facts MPI request through admin queue and wait for 2212 * the completion of it or time out. 2213 * 2214 * Return: 0 on success, non-zero on failures. 2215 */ 2216 static int mpi3mr_issue_iocfacts(struct mpi3mr_ioc *mrioc, 2217 struct mpi3_ioc_facts_data *facts_data) 2218 { 2219 struct mpi3_ioc_facts_request iocfacts_req; 2220 void *data = NULL; 2221 dma_addr_t data_dma; 2222 u32 data_len = sizeof(*facts_data); 2223 int retval = 0; 2224 u8 sgl_flags = MPI3MR_SGEFLAGS_SYSTEM_SIMPLE_END_OF_LIST; 2225 2226 data = dma_alloc_coherent(&mrioc->pdev->dev, data_len, &data_dma, 2227 GFP_KERNEL); 2228 2229 if (!data) { 2230 retval = -1; 2231 goto out; 2232 } 2233 2234 memset(&iocfacts_req, 0, sizeof(iocfacts_req)); 2235 mutex_lock(&mrioc->init_cmds.mutex); 2236 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 2237 retval = -1; 2238 ioc_err(mrioc, "Issue IOCFacts: Init command is in use\n"); 2239 mutex_unlock(&mrioc->init_cmds.mutex); 2240 goto out; 2241 } 2242 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 2243 mrioc->init_cmds.is_waiting = 1; 2244 mrioc->init_cmds.callback = NULL; 2245 iocfacts_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 2246 iocfacts_req.function = MPI3_FUNCTION_IOC_FACTS; 2247 2248 mpi3mr_add_sg_single(&iocfacts_req.sgl, sgl_flags, data_len, 2249 data_dma); 2250 2251 init_completion(&mrioc->init_cmds.done); 2252 retval = mpi3mr_admin_request_post(mrioc, &iocfacts_req, 2253 sizeof(iocfacts_req), 1); 2254 if (retval) { 2255 ioc_err(mrioc, "Issue IOCFacts: Admin Post failed\n"); 2256 goto out_unlock; 2257 } 2258 wait_for_completion_timeout(&mrioc->init_cmds.done, 2259 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 2260 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 2261 ioc_err(mrioc, "Issue IOCFacts: command timed out\n"); 2262 mpi3mr_set_diagsave(mrioc); 2263 mpi3mr_issue_reset(mrioc, 2264 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 2265 MPI3MR_RESET_FROM_IOCFACTS_TIMEOUT); 2266 mrioc->unrecoverable = 1; 2267 retval = -1; 2268 goto out_unlock; 2269 } 2270 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 2271 != MPI3_IOCSTATUS_SUCCESS) { 2272 ioc_err(mrioc, 2273 "Issue IOCFacts: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 2274 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 2275 mrioc->init_cmds.ioc_loginfo); 2276 retval = -1; 2277 goto out_unlock; 2278 } 2279 memcpy(facts_data, (u8 *)data, data_len); 2280 out_unlock: 2281 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 2282 mutex_unlock(&mrioc->init_cmds.mutex); 2283 2284 out: 2285 if (data) 2286 dma_free_coherent(&mrioc->pdev->dev, data_len, data, data_dma); 2287 2288 return retval; 2289 } 2290 2291 /** 2292 * mpi3mr_check_reset_dma_mask - Process IOC facts data 2293 * @mrioc: Adapter instance reference 2294 * 2295 * Check whether the new DMA mask requested through IOCFacts by 2296 * firmware needs to be set, if so set it . 2297 * 2298 * Return: 0 on success, non-zero on failure. 2299 */ 2300 static inline int mpi3mr_check_reset_dma_mask(struct mpi3mr_ioc *mrioc) 2301 { 2302 struct pci_dev *pdev = mrioc->pdev; 2303 int r; 2304 u64 facts_dma_mask = DMA_BIT_MASK(mrioc->facts.dma_mask); 2305 2306 if (!mrioc->facts.dma_mask || (mrioc->dma_mask <= facts_dma_mask)) 2307 return 0; 2308 2309 ioc_info(mrioc, "Changing DMA mask from 0x%016llx to 0x%016llx\n", 2310 mrioc->dma_mask, facts_dma_mask); 2311 2312 r = dma_set_mask_and_coherent(&pdev->dev, facts_dma_mask); 2313 if (r) { 2314 ioc_err(mrioc, "Setting DMA mask to 0x%016llx failed: %d\n", 2315 facts_dma_mask, r); 2316 return r; 2317 } 2318 mrioc->dma_mask = facts_dma_mask; 2319 return r; 2320 } 2321 2322 /** 2323 * mpi3mr_process_factsdata - Process IOC facts data 2324 * @mrioc: Adapter instance reference 2325 * @facts_data: Cached IOC facts data 2326 * 2327 * Convert IOC facts data into cpu endianness and cache it in 2328 * the driver . 2329 * 2330 * Return: Nothing. 2331 */ 2332 static void mpi3mr_process_factsdata(struct mpi3mr_ioc *mrioc, 2333 struct mpi3_ioc_facts_data *facts_data) 2334 { 2335 u32 ioc_config, req_sz, facts_flags; 2336 2337 if ((le16_to_cpu(facts_data->ioc_facts_data_length)) != 2338 (sizeof(*facts_data) / 4)) { 2339 ioc_warn(mrioc, 2340 "IOCFactsdata length mismatch driver_sz(%zu) firmware_sz(%d)\n", 2341 sizeof(*facts_data), 2342 le16_to_cpu(facts_data->ioc_facts_data_length) * 4); 2343 } 2344 2345 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 2346 req_sz = 1 << ((ioc_config & MPI3_SYSIF_IOC_CONFIG_OPER_REQ_ENT_SZ) >> 2347 MPI3_SYSIF_IOC_CONFIG_OPER_REQ_ENT_SZ_SHIFT); 2348 if (le16_to_cpu(facts_data->ioc_request_frame_size) != (req_sz / 4)) { 2349 ioc_err(mrioc, 2350 "IOCFacts data reqFrameSize mismatch hw_size(%d) firmware_sz(%d)\n", 2351 req_sz / 4, le16_to_cpu(facts_data->ioc_request_frame_size)); 2352 } 2353 2354 memset(&mrioc->facts, 0, sizeof(mrioc->facts)); 2355 2356 facts_flags = le32_to_cpu(facts_data->flags); 2357 mrioc->facts.op_req_sz = req_sz; 2358 mrioc->op_reply_desc_sz = 1 << ((ioc_config & 2359 MPI3_SYSIF_IOC_CONFIG_OPER_RPY_ENT_SZ) >> 2360 MPI3_SYSIF_IOC_CONFIG_OPER_RPY_ENT_SZ_SHIFT); 2361 2362 mrioc->facts.ioc_num = facts_data->ioc_number; 2363 mrioc->facts.who_init = facts_data->who_init; 2364 mrioc->facts.max_msix_vectors = le16_to_cpu(facts_data->max_msix_vectors); 2365 mrioc->facts.personality = (facts_flags & 2366 MPI3_IOCFACTS_FLAGS_PERSONALITY_MASK); 2367 mrioc->facts.dma_mask = (facts_flags & 2368 MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_MASK) >> 2369 MPI3_IOCFACTS_FLAGS_DMA_ADDRESS_WIDTH_SHIFT; 2370 mrioc->facts.protocol_flags = facts_data->protocol_flags; 2371 mrioc->facts.mpi_version = le32_to_cpu(facts_data->mpi_version.word); 2372 mrioc->facts.max_reqs = le16_to_cpu(facts_data->max_outstanding_request); 2373 mrioc->facts.product_id = le16_to_cpu(facts_data->product_id); 2374 mrioc->facts.reply_sz = le16_to_cpu(facts_data->reply_frame_size) * 4; 2375 mrioc->facts.exceptions = le16_to_cpu(facts_data->ioc_exceptions); 2376 mrioc->facts.max_perids = le16_to_cpu(facts_data->max_persistent_id); 2377 mrioc->facts.max_pds = le16_to_cpu(facts_data->max_pds); 2378 mrioc->facts.max_vds = le16_to_cpu(facts_data->max_vds); 2379 mrioc->facts.max_hpds = le16_to_cpu(facts_data->max_host_pds); 2380 mrioc->facts.max_advhpds = le16_to_cpu(facts_data->max_advanced_host_pds); 2381 mrioc->facts.max_raidpds = le16_to_cpu(facts_data->max_raid_pds); 2382 mrioc->facts.max_nvme = le16_to_cpu(facts_data->max_nvme); 2383 mrioc->facts.max_pcie_switches = 2384 le16_to_cpu(facts_data->max_pc_ie_switches); 2385 mrioc->facts.max_sasexpanders = 2386 le16_to_cpu(facts_data->max_sas_expanders); 2387 mrioc->facts.max_sasinitiators = 2388 le16_to_cpu(facts_data->max_sas_initiators); 2389 mrioc->facts.max_enclosures = le16_to_cpu(facts_data->max_enclosures); 2390 mrioc->facts.min_devhandle = le16_to_cpu(facts_data->min_dev_handle); 2391 mrioc->facts.max_devhandle = le16_to_cpu(facts_data->max_dev_handle); 2392 mrioc->facts.max_op_req_q = 2393 le16_to_cpu(facts_data->max_operational_request_queues); 2394 mrioc->facts.max_op_reply_q = 2395 le16_to_cpu(facts_data->max_operational_reply_queues); 2396 mrioc->facts.ioc_capabilities = 2397 le32_to_cpu(facts_data->ioc_capabilities); 2398 mrioc->facts.fw_ver.build_num = 2399 le16_to_cpu(facts_data->fw_version.build_num); 2400 mrioc->facts.fw_ver.cust_id = 2401 le16_to_cpu(facts_data->fw_version.customer_id); 2402 mrioc->facts.fw_ver.ph_minor = facts_data->fw_version.phase_minor; 2403 mrioc->facts.fw_ver.ph_major = facts_data->fw_version.phase_major; 2404 mrioc->facts.fw_ver.gen_minor = facts_data->fw_version.gen_minor; 2405 mrioc->facts.fw_ver.gen_major = facts_data->fw_version.gen_major; 2406 mrioc->msix_count = min_t(int, mrioc->msix_count, 2407 mrioc->facts.max_msix_vectors); 2408 mrioc->facts.sge_mod_mask = facts_data->sge_modifier_mask; 2409 mrioc->facts.sge_mod_value = facts_data->sge_modifier_value; 2410 mrioc->facts.sge_mod_shift = facts_data->sge_modifier_shift; 2411 mrioc->facts.shutdown_timeout = 2412 le16_to_cpu(facts_data->shutdown_timeout); 2413 2414 ioc_info(mrioc, "ioc_num(%d), maxopQ(%d), maxopRepQ(%d), maxdh(%d),", 2415 mrioc->facts.ioc_num, mrioc->facts.max_op_req_q, 2416 mrioc->facts.max_op_reply_q, mrioc->facts.max_devhandle); 2417 ioc_info(mrioc, 2418 "maxreqs(%d), mindh(%d) maxPDs(%d) maxvectors(%d) maxperids(%d)\n", 2419 mrioc->facts.max_reqs, mrioc->facts.min_devhandle, 2420 mrioc->facts.max_pds, mrioc->facts.max_msix_vectors, 2421 mrioc->facts.max_perids); 2422 ioc_info(mrioc, "SGEModMask 0x%x SGEModVal 0x%x SGEModShift 0x%x ", 2423 mrioc->facts.sge_mod_mask, mrioc->facts.sge_mod_value, 2424 mrioc->facts.sge_mod_shift); 2425 ioc_info(mrioc, "DMA mask %d InitialPE status 0x%x\n", 2426 mrioc->facts.dma_mask, (facts_flags & 2427 MPI3_IOCFACTS_FLAGS_INITIAL_PORT_ENABLE_MASK)); 2428 2429 mrioc->max_host_ios = mrioc->facts.max_reqs - MPI3MR_INTERNAL_CMDS_RESVD; 2430 2431 if (reset_devices) 2432 mrioc->max_host_ios = min_t(int, mrioc->max_host_ios, 2433 MPI3MR_HOST_IOS_KDUMP); 2434 } 2435 2436 /** 2437 * mpi3mr_alloc_reply_sense_bufs - Send IOC Init 2438 * @mrioc: Adapter instance reference 2439 * 2440 * Allocate and initialize the reply free buffers, sense 2441 * buffers, reply free queue and sense buffer queue. 2442 * 2443 * Return: 0 on success, non-zero on failures. 2444 */ 2445 static int mpi3mr_alloc_reply_sense_bufs(struct mpi3mr_ioc *mrioc) 2446 { 2447 int retval = 0; 2448 u32 sz, i; 2449 dma_addr_t phy_addr; 2450 2451 if (mrioc->init_cmds.reply) 2452 goto post_reply_sbuf; 2453 2454 mrioc->init_cmds.reply = kzalloc(mrioc->facts.reply_sz, GFP_KERNEL); 2455 if (!mrioc->init_cmds.reply) 2456 goto out_failed; 2457 2458 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) { 2459 mrioc->dev_rmhs_cmds[i].reply = kzalloc(mrioc->facts.reply_sz, 2460 GFP_KERNEL); 2461 if (!mrioc->dev_rmhs_cmds[i].reply) 2462 goto out_failed; 2463 } 2464 2465 mrioc->host_tm_cmds.reply = kzalloc(mrioc->facts.reply_sz, GFP_KERNEL); 2466 if (!mrioc->host_tm_cmds.reply) 2467 goto out_failed; 2468 2469 mrioc->dev_handle_bitmap_sz = mrioc->facts.max_devhandle / 8; 2470 if (mrioc->facts.max_devhandle % 8) 2471 mrioc->dev_handle_bitmap_sz++; 2472 mrioc->removepend_bitmap = kzalloc(mrioc->dev_handle_bitmap_sz, 2473 GFP_KERNEL); 2474 if (!mrioc->removepend_bitmap) 2475 goto out_failed; 2476 2477 mrioc->devrem_bitmap_sz = MPI3MR_NUM_DEVRMCMD / 8; 2478 if (MPI3MR_NUM_DEVRMCMD % 8) 2479 mrioc->devrem_bitmap_sz++; 2480 mrioc->devrem_bitmap = kzalloc(mrioc->devrem_bitmap_sz, 2481 GFP_KERNEL); 2482 if (!mrioc->devrem_bitmap) 2483 goto out_failed; 2484 2485 mrioc->num_reply_bufs = mrioc->facts.max_reqs + MPI3MR_NUM_EVT_REPLIES; 2486 mrioc->reply_free_qsz = mrioc->num_reply_bufs + 1; 2487 mrioc->num_sense_bufs = mrioc->facts.max_reqs / MPI3MR_SENSEBUF_FACTOR; 2488 mrioc->sense_buf_q_sz = mrioc->num_sense_bufs + 1; 2489 2490 /* reply buffer pool, 16 byte align */ 2491 sz = mrioc->num_reply_bufs * mrioc->facts.reply_sz; 2492 mrioc->reply_buf_pool = dma_pool_create("reply_buf pool", 2493 &mrioc->pdev->dev, sz, 16, 0); 2494 if (!mrioc->reply_buf_pool) { 2495 ioc_err(mrioc, "reply buf pool: dma_pool_create failed\n"); 2496 goto out_failed; 2497 } 2498 2499 mrioc->reply_buf = dma_pool_zalloc(mrioc->reply_buf_pool, GFP_KERNEL, 2500 &mrioc->reply_buf_dma); 2501 if (!mrioc->reply_buf) 2502 goto out_failed; 2503 2504 mrioc->reply_buf_dma_max_address = mrioc->reply_buf_dma + sz; 2505 2506 /* reply free queue, 8 byte align */ 2507 sz = mrioc->reply_free_qsz * 8; 2508 mrioc->reply_free_q_pool = dma_pool_create("reply_free_q pool", 2509 &mrioc->pdev->dev, sz, 8, 0); 2510 if (!mrioc->reply_free_q_pool) { 2511 ioc_err(mrioc, "reply_free_q pool: dma_pool_create failed\n"); 2512 goto out_failed; 2513 } 2514 mrioc->reply_free_q = dma_pool_zalloc(mrioc->reply_free_q_pool, 2515 GFP_KERNEL, &mrioc->reply_free_q_dma); 2516 if (!mrioc->reply_free_q) 2517 goto out_failed; 2518 2519 /* sense buffer pool, 4 byte align */ 2520 sz = mrioc->num_sense_bufs * MPI3MR_SENSEBUF_SZ; 2521 mrioc->sense_buf_pool = dma_pool_create("sense_buf pool", 2522 &mrioc->pdev->dev, sz, 4, 0); 2523 if (!mrioc->sense_buf_pool) { 2524 ioc_err(mrioc, "sense_buf pool: dma_pool_create failed\n"); 2525 goto out_failed; 2526 } 2527 mrioc->sense_buf = dma_pool_zalloc(mrioc->sense_buf_pool, GFP_KERNEL, 2528 &mrioc->sense_buf_dma); 2529 if (!mrioc->sense_buf) 2530 goto out_failed; 2531 2532 /* sense buffer queue, 8 byte align */ 2533 sz = mrioc->sense_buf_q_sz * 8; 2534 mrioc->sense_buf_q_pool = dma_pool_create("sense_buf_q pool", 2535 &mrioc->pdev->dev, sz, 8, 0); 2536 if (!mrioc->sense_buf_q_pool) { 2537 ioc_err(mrioc, "sense_buf_q pool: dma_pool_create failed\n"); 2538 goto out_failed; 2539 } 2540 mrioc->sense_buf_q = dma_pool_zalloc(mrioc->sense_buf_q_pool, 2541 GFP_KERNEL, &mrioc->sense_buf_q_dma); 2542 if (!mrioc->sense_buf_q) 2543 goto out_failed; 2544 2545 post_reply_sbuf: 2546 sz = mrioc->num_reply_bufs * mrioc->facts.reply_sz; 2547 ioc_info(mrioc, 2548 "reply buf pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB), reply_dma(0x%llx)\n", 2549 mrioc->reply_buf, mrioc->num_reply_bufs, mrioc->facts.reply_sz, 2550 (sz / 1024), (unsigned long long)mrioc->reply_buf_dma); 2551 sz = mrioc->reply_free_qsz * 8; 2552 ioc_info(mrioc, 2553 "reply_free_q pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB), reply_dma(0x%llx)\n", 2554 mrioc->reply_free_q, mrioc->reply_free_qsz, 8, (sz / 1024), 2555 (unsigned long long)mrioc->reply_free_q_dma); 2556 sz = mrioc->num_sense_bufs * MPI3MR_SENSEBUF_SZ; 2557 ioc_info(mrioc, 2558 "sense_buf pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB), sense_dma(0x%llx)\n", 2559 mrioc->sense_buf, mrioc->num_sense_bufs, MPI3MR_SENSEBUF_SZ, 2560 (sz / 1024), (unsigned long long)mrioc->sense_buf_dma); 2561 sz = mrioc->sense_buf_q_sz * 8; 2562 ioc_info(mrioc, 2563 "sense_buf_q pool(0x%p): depth(%d), frame_size(%d), pool_size(%d kB), sense_dma(0x%llx)\n", 2564 mrioc->sense_buf_q, mrioc->sense_buf_q_sz, 8, (sz / 1024), 2565 (unsigned long long)mrioc->sense_buf_q_dma); 2566 2567 /* initialize Reply buffer Queue */ 2568 for (i = 0, phy_addr = mrioc->reply_buf_dma; 2569 i < mrioc->num_reply_bufs; i++, phy_addr += mrioc->facts.reply_sz) 2570 mrioc->reply_free_q[i] = cpu_to_le64(phy_addr); 2571 mrioc->reply_free_q[i] = cpu_to_le64(0); 2572 2573 /* initialize Sense Buffer Queue */ 2574 for (i = 0, phy_addr = mrioc->sense_buf_dma; 2575 i < mrioc->num_sense_bufs; i++, phy_addr += MPI3MR_SENSEBUF_SZ) 2576 mrioc->sense_buf_q[i] = cpu_to_le64(phy_addr); 2577 mrioc->sense_buf_q[i] = cpu_to_le64(0); 2578 return retval; 2579 2580 out_failed: 2581 retval = -1; 2582 return retval; 2583 } 2584 2585 /** 2586 * mpi3mr_issue_iocinit - Send IOC Init 2587 * @mrioc: Adapter instance reference 2588 * 2589 * Issue IOC Init MPI request through admin queue and wait for 2590 * the completion of it or time out. 2591 * 2592 * Return: 0 on success, non-zero on failures. 2593 */ 2594 static int mpi3mr_issue_iocinit(struct mpi3mr_ioc *mrioc) 2595 { 2596 struct mpi3_ioc_init_request iocinit_req; 2597 struct mpi3_driver_info_layout *drv_info; 2598 dma_addr_t data_dma; 2599 u32 data_len = sizeof(*drv_info); 2600 int retval = 0; 2601 ktime_t current_time; 2602 2603 drv_info = dma_alloc_coherent(&mrioc->pdev->dev, data_len, &data_dma, 2604 GFP_KERNEL); 2605 if (!drv_info) { 2606 retval = -1; 2607 goto out; 2608 } 2609 drv_info->information_length = cpu_to_le32(data_len); 2610 strscpy(drv_info->driver_signature, "Broadcom", sizeof(drv_info->driver_signature)); 2611 strscpy(drv_info->os_name, utsname()->sysname, sizeof(drv_info->os_name)); 2612 strscpy(drv_info->os_version, utsname()->release, sizeof(drv_info->os_version)); 2613 strscpy(drv_info->driver_name, MPI3MR_DRIVER_NAME, sizeof(drv_info->driver_name)); 2614 strscpy(drv_info->driver_version, MPI3MR_DRIVER_VERSION, sizeof(drv_info->driver_version)); 2615 strscpy(drv_info->driver_release_date, MPI3MR_DRIVER_RELDATE, 2616 sizeof(drv_info->driver_release_date)); 2617 drv_info->driver_capabilities = 0; 2618 memcpy((u8 *)&mrioc->driver_info, (u8 *)drv_info, 2619 sizeof(mrioc->driver_info)); 2620 2621 memset(&iocinit_req, 0, sizeof(iocinit_req)); 2622 mutex_lock(&mrioc->init_cmds.mutex); 2623 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 2624 retval = -1; 2625 ioc_err(mrioc, "Issue IOCInit: Init command is in use\n"); 2626 mutex_unlock(&mrioc->init_cmds.mutex); 2627 goto out; 2628 } 2629 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 2630 mrioc->init_cmds.is_waiting = 1; 2631 mrioc->init_cmds.callback = NULL; 2632 iocinit_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 2633 iocinit_req.function = MPI3_FUNCTION_IOC_INIT; 2634 iocinit_req.mpi_version.mpi3_version.dev = MPI3_VERSION_DEV; 2635 iocinit_req.mpi_version.mpi3_version.unit = MPI3_VERSION_UNIT; 2636 iocinit_req.mpi_version.mpi3_version.major = MPI3_VERSION_MAJOR; 2637 iocinit_req.mpi_version.mpi3_version.minor = MPI3_VERSION_MINOR; 2638 iocinit_req.who_init = MPI3_WHOINIT_HOST_DRIVER; 2639 iocinit_req.reply_free_queue_depth = cpu_to_le16(mrioc->reply_free_qsz); 2640 iocinit_req.reply_free_queue_address = 2641 cpu_to_le64(mrioc->reply_free_q_dma); 2642 iocinit_req.sense_buffer_length = cpu_to_le16(MPI3MR_SENSEBUF_SZ); 2643 iocinit_req.sense_buffer_free_queue_depth = 2644 cpu_to_le16(mrioc->sense_buf_q_sz); 2645 iocinit_req.sense_buffer_free_queue_address = 2646 cpu_to_le64(mrioc->sense_buf_q_dma); 2647 iocinit_req.driver_information_address = cpu_to_le64(data_dma); 2648 2649 current_time = ktime_get_real(); 2650 iocinit_req.time_stamp = cpu_to_le64(ktime_to_ms(current_time)); 2651 2652 init_completion(&mrioc->init_cmds.done); 2653 retval = mpi3mr_admin_request_post(mrioc, &iocinit_req, 2654 sizeof(iocinit_req), 1); 2655 if (retval) { 2656 ioc_err(mrioc, "Issue IOCInit: Admin Post failed\n"); 2657 goto out_unlock; 2658 } 2659 wait_for_completion_timeout(&mrioc->init_cmds.done, 2660 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 2661 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 2662 mpi3mr_set_diagsave(mrioc); 2663 mpi3mr_issue_reset(mrioc, 2664 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 2665 MPI3MR_RESET_FROM_IOCINIT_TIMEOUT); 2666 mrioc->unrecoverable = 1; 2667 ioc_err(mrioc, "Issue IOCInit: command timed out\n"); 2668 retval = -1; 2669 goto out_unlock; 2670 } 2671 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 2672 != MPI3_IOCSTATUS_SUCCESS) { 2673 ioc_err(mrioc, 2674 "Issue IOCInit: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 2675 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 2676 mrioc->init_cmds.ioc_loginfo); 2677 retval = -1; 2678 goto out_unlock; 2679 } 2680 2681 out_unlock: 2682 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 2683 mutex_unlock(&mrioc->init_cmds.mutex); 2684 2685 out: 2686 if (drv_info) 2687 dma_free_coherent(&mrioc->pdev->dev, data_len, drv_info, 2688 data_dma); 2689 2690 return retval; 2691 } 2692 2693 /** 2694 * mpi3mr_unmask_events - Unmask events in event mask bitmap 2695 * @mrioc: Adapter instance reference 2696 * @event: MPI event ID 2697 * 2698 * Un mask the specific event by resetting the event_mask 2699 * bitmap. 2700 * 2701 * Return: 0 on success, non-zero on failures. 2702 */ 2703 static void mpi3mr_unmask_events(struct mpi3mr_ioc *mrioc, u16 event) 2704 { 2705 u32 desired_event; 2706 u8 word; 2707 2708 if (event >= 128) 2709 return; 2710 2711 desired_event = (1 << (event % 32)); 2712 word = event / 32; 2713 2714 mrioc->event_masks[word] &= ~desired_event; 2715 } 2716 2717 /** 2718 * mpi3mr_issue_event_notification - Send event notification 2719 * @mrioc: Adapter instance reference 2720 * 2721 * Issue event notification MPI request through admin queue and 2722 * wait for the completion of it or time out. 2723 * 2724 * Return: 0 on success, non-zero on failures. 2725 */ 2726 static int mpi3mr_issue_event_notification(struct mpi3mr_ioc *mrioc) 2727 { 2728 struct mpi3_event_notification_request evtnotify_req; 2729 int retval = 0; 2730 u8 i; 2731 2732 memset(&evtnotify_req, 0, sizeof(evtnotify_req)); 2733 mutex_lock(&mrioc->init_cmds.mutex); 2734 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 2735 retval = -1; 2736 ioc_err(mrioc, "Issue EvtNotify: Init command is in use\n"); 2737 mutex_unlock(&mrioc->init_cmds.mutex); 2738 goto out; 2739 } 2740 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 2741 mrioc->init_cmds.is_waiting = 1; 2742 mrioc->init_cmds.callback = NULL; 2743 evtnotify_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 2744 evtnotify_req.function = MPI3_FUNCTION_EVENT_NOTIFICATION; 2745 for (i = 0; i < MPI3_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 2746 evtnotify_req.event_masks[i] = 2747 cpu_to_le32(mrioc->event_masks[i]); 2748 init_completion(&mrioc->init_cmds.done); 2749 retval = mpi3mr_admin_request_post(mrioc, &evtnotify_req, 2750 sizeof(evtnotify_req), 1); 2751 if (retval) { 2752 ioc_err(mrioc, "Issue EvtNotify: Admin Post failed\n"); 2753 goto out_unlock; 2754 } 2755 wait_for_completion_timeout(&mrioc->init_cmds.done, 2756 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 2757 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 2758 ioc_err(mrioc, "Issue EvtNotify: command timed out\n"); 2759 mpi3mr_set_diagsave(mrioc); 2760 mpi3mr_issue_reset(mrioc, 2761 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 2762 MPI3MR_RESET_FROM_EVTNOTIFY_TIMEOUT); 2763 mrioc->unrecoverable = 1; 2764 retval = -1; 2765 goto out_unlock; 2766 } 2767 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 2768 != MPI3_IOCSTATUS_SUCCESS) { 2769 ioc_err(mrioc, 2770 "Issue EvtNotify: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 2771 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 2772 mrioc->init_cmds.ioc_loginfo); 2773 retval = -1; 2774 goto out_unlock; 2775 } 2776 2777 out_unlock: 2778 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 2779 mutex_unlock(&mrioc->init_cmds.mutex); 2780 out: 2781 return retval; 2782 } 2783 2784 /** 2785 * mpi3mr_send_event_ack - Send event acknowledgment 2786 * @mrioc: Adapter instance reference 2787 * @event: MPI3 event ID 2788 * @event_ctx: Event context 2789 * 2790 * Send event acknowledgment through admin queue and wait for 2791 * it to complete. 2792 * 2793 * Return: 0 on success, non-zero on failures. 2794 */ 2795 int mpi3mr_send_event_ack(struct mpi3mr_ioc *mrioc, u8 event, 2796 u32 event_ctx) 2797 { 2798 struct mpi3_event_ack_request evtack_req; 2799 int retval = 0; 2800 2801 memset(&evtack_req, 0, sizeof(evtack_req)); 2802 mutex_lock(&mrioc->init_cmds.mutex); 2803 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 2804 retval = -1; 2805 ioc_err(mrioc, "Send EvtAck: Init command is in use\n"); 2806 mutex_unlock(&mrioc->init_cmds.mutex); 2807 goto out; 2808 } 2809 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 2810 mrioc->init_cmds.is_waiting = 1; 2811 mrioc->init_cmds.callback = NULL; 2812 evtack_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 2813 evtack_req.function = MPI3_FUNCTION_EVENT_ACK; 2814 evtack_req.event = event; 2815 evtack_req.event_context = cpu_to_le32(event_ctx); 2816 2817 init_completion(&mrioc->init_cmds.done); 2818 retval = mpi3mr_admin_request_post(mrioc, &evtack_req, 2819 sizeof(evtack_req), 1); 2820 if (retval) { 2821 ioc_err(mrioc, "Send EvtAck: Admin Post failed\n"); 2822 goto out_unlock; 2823 } 2824 wait_for_completion_timeout(&mrioc->init_cmds.done, 2825 (MPI3MR_INTADMCMD_TIMEOUT * HZ)); 2826 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 2827 ioc_err(mrioc, "Issue EvtNotify: command timed out\n"); 2828 mpi3mr_soft_reset_handler(mrioc, 2829 MPI3MR_RESET_FROM_EVTACK_TIMEOUT, 1); 2830 retval = -1; 2831 goto out_unlock; 2832 } 2833 if ((mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK) 2834 != MPI3_IOCSTATUS_SUCCESS) { 2835 ioc_err(mrioc, 2836 "Send EvtAck: Failed ioc_status(0x%04x) Loginfo(0x%08x)\n", 2837 (mrioc->init_cmds.ioc_status & MPI3_IOCSTATUS_STATUS_MASK), 2838 mrioc->init_cmds.ioc_loginfo); 2839 retval = -1; 2840 goto out_unlock; 2841 } 2842 2843 out_unlock: 2844 mrioc->init_cmds.state = MPI3MR_CMD_NOTUSED; 2845 mutex_unlock(&mrioc->init_cmds.mutex); 2846 out: 2847 return retval; 2848 } 2849 2850 /** 2851 * mpi3mr_alloc_chain_bufs - Allocate chain buffers 2852 * @mrioc: Adapter instance reference 2853 * 2854 * Allocate chain buffers and set a bitmap to indicate free 2855 * chain buffers. Chain buffers are used to pass the SGE 2856 * information along with MPI3 SCSI IO requests for host I/O. 2857 * 2858 * Return: 0 on success, non-zero on failure 2859 */ 2860 static int mpi3mr_alloc_chain_bufs(struct mpi3mr_ioc *mrioc) 2861 { 2862 int retval = 0; 2863 u32 sz, i; 2864 u16 num_chains; 2865 2866 num_chains = mrioc->max_host_ios / MPI3MR_CHAINBUF_FACTOR; 2867 2868 if (prot_mask & (SHOST_DIX_TYPE0_PROTECTION 2869 | SHOST_DIX_TYPE1_PROTECTION 2870 | SHOST_DIX_TYPE2_PROTECTION 2871 | SHOST_DIX_TYPE3_PROTECTION)) 2872 num_chains += (num_chains / MPI3MR_CHAINBUFDIX_FACTOR); 2873 2874 mrioc->chain_buf_count = num_chains; 2875 sz = sizeof(struct chain_element) * num_chains; 2876 mrioc->chain_sgl_list = kzalloc(sz, GFP_KERNEL); 2877 if (!mrioc->chain_sgl_list) 2878 goto out_failed; 2879 2880 sz = MPI3MR_PAGE_SIZE_4K; 2881 mrioc->chain_buf_pool = dma_pool_create("chain_buf pool", 2882 &mrioc->pdev->dev, sz, 16, 0); 2883 if (!mrioc->chain_buf_pool) { 2884 ioc_err(mrioc, "chain buf pool: dma_pool_create failed\n"); 2885 goto out_failed; 2886 } 2887 2888 for (i = 0; i < num_chains; i++) { 2889 mrioc->chain_sgl_list[i].addr = 2890 dma_pool_zalloc(mrioc->chain_buf_pool, GFP_KERNEL, 2891 &mrioc->chain_sgl_list[i].dma_addr); 2892 2893 if (!mrioc->chain_sgl_list[i].addr) 2894 goto out_failed; 2895 } 2896 mrioc->chain_bitmap_sz = num_chains / 8; 2897 if (num_chains % 8) 2898 mrioc->chain_bitmap_sz++; 2899 mrioc->chain_bitmap = kzalloc(mrioc->chain_bitmap_sz, GFP_KERNEL); 2900 if (!mrioc->chain_bitmap) 2901 goto out_failed; 2902 return retval; 2903 out_failed: 2904 retval = -1; 2905 return retval; 2906 } 2907 2908 /** 2909 * mpi3mr_port_enable_complete - Mark port enable complete 2910 * @mrioc: Adapter instance reference 2911 * @drv_cmd: Internal command tracker 2912 * 2913 * Call back for asynchronous port enable request sets the 2914 * driver command to indicate port enable request is complete. 2915 * 2916 * Return: Nothing 2917 */ 2918 static void mpi3mr_port_enable_complete(struct mpi3mr_ioc *mrioc, 2919 struct mpi3mr_drv_cmd *drv_cmd) 2920 { 2921 drv_cmd->state = MPI3MR_CMD_NOTUSED; 2922 drv_cmd->callback = NULL; 2923 mrioc->scan_failed = drv_cmd->ioc_status; 2924 mrioc->scan_started = 0; 2925 } 2926 2927 /** 2928 * mpi3mr_issue_port_enable - Issue Port Enable 2929 * @mrioc: Adapter instance reference 2930 * @async: Flag to wait for completion or not 2931 * 2932 * Issue Port Enable MPI request through admin queue and if the 2933 * async flag is not set wait for the completion of the port 2934 * enable or time out. 2935 * 2936 * Return: 0 on success, non-zero on failures. 2937 */ 2938 int mpi3mr_issue_port_enable(struct mpi3mr_ioc *mrioc, u8 async) 2939 { 2940 struct mpi3_port_enable_request pe_req; 2941 int retval = 0; 2942 u32 pe_timeout = MPI3MR_PORTENABLE_TIMEOUT; 2943 2944 memset(&pe_req, 0, sizeof(pe_req)); 2945 mutex_lock(&mrioc->init_cmds.mutex); 2946 if (mrioc->init_cmds.state & MPI3MR_CMD_PENDING) { 2947 retval = -1; 2948 ioc_err(mrioc, "Issue PortEnable: Init command is in use\n"); 2949 mutex_unlock(&mrioc->init_cmds.mutex); 2950 goto out; 2951 } 2952 mrioc->init_cmds.state = MPI3MR_CMD_PENDING; 2953 if (async) { 2954 mrioc->init_cmds.is_waiting = 0; 2955 mrioc->init_cmds.callback = mpi3mr_port_enable_complete; 2956 } else { 2957 mrioc->init_cmds.is_waiting = 1; 2958 mrioc->init_cmds.callback = NULL; 2959 init_completion(&mrioc->init_cmds.done); 2960 } 2961 pe_req.host_tag = cpu_to_le16(MPI3MR_HOSTTAG_INITCMDS); 2962 pe_req.function = MPI3_FUNCTION_PORT_ENABLE; 2963 2964 retval = mpi3mr_admin_request_post(mrioc, &pe_req, sizeof(pe_req), 1); 2965 if (retval) { 2966 ioc_err(mrioc, "Issue PortEnable: Admin Post failed\n"); 2967 goto out_unlock; 2968 } 2969 if (!async) { 2970 wait_for_completion_timeout(&mrioc->init_cmds.done, 2971 (pe_timeout * HZ)); 2972 if (!(mrioc->init_cmds.state & MPI3MR_CMD_COMPLETE)) { 2973 ioc_err(mrioc, "Issue PortEnable: command timed out\n"); 2974 retval = -1; 2975 mrioc->scan_failed = MPI3_IOCSTATUS_INTERNAL_ERROR; 2976 mpi3mr_set_diagsave(mrioc); 2977 mpi3mr_issue_reset(mrioc, 2978 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, 2979 MPI3MR_RESET_FROM_PE_TIMEOUT); 2980 mrioc->unrecoverable = 1; 2981 goto out_unlock; 2982 } 2983 mpi3mr_port_enable_complete(mrioc, &mrioc->init_cmds); 2984 } 2985 out_unlock: 2986 mutex_unlock(&mrioc->init_cmds.mutex); 2987 out: 2988 return retval; 2989 } 2990 2991 /* Protocol type to name mapper structure*/ 2992 static const struct { 2993 u8 protocol; 2994 char *name; 2995 } mpi3mr_protocols[] = { 2996 { MPI3_IOCFACTS_PROTOCOL_SCSI_INITIATOR, "Initiator" }, 2997 { MPI3_IOCFACTS_PROTOCOL_SCSI_TARGET, "Target" }, 2998 { MPI3_IOCFACTS_PROTOCOL_NVME, "NVMe attachment" }, 2999 }; 3000 3001 /* Capability to name mapper structure*/ 3002 static const struct { 3003 u32 capability; 3004 char *name; 3005 } mpi3mr_capabilities[] = { 3006 { MPI3_IOCFACTS_CAPABILITY_RAID_CAPABLE, "RAID" }, 3007 }; 3008 3009 /** 3010 * mpi3mr_print_ioc_info - Display controller information 3011 * @mrioc: Adapter instance reference 3012 * 3013 * Display controller personalit, capability, supported 3014 * protocols etc. 3015 * 3016 * Return: Nothing 3017 */ 3018 static void 3019 mpi3mr_print_ioc_info(struct mpi3mr_ioc *mrioc) 3020 { 3021 int i = 0, bytes_written = 0; 3022 char personality[16]; 3023 char protocol[50] = {0}; 3024 char capabilities[100] = {0}; 3025 struct mpi3mr_compimg_ver *fwver = &mrioc->facts.fw_ver; 3026 3027 switch (mrioc->facts.personality) { 3028 case MPI3_IOCFACTS_FLAGS_PERSONALITY_EHBA: 3029 strncpy(personality, "Enhanced HBA", sizeof(personality)); 3030 break; 3031 case MPI3_IOCFACTS_FLAGS_PERSONALITY_RAID_DDR: 3032 strncpy(personality, "RAID", sizeof(personality)); 3033 break; 3034 default: 3035 strncpy(personality, "Unknown", sizeof(personality)); 3036 break; 3037 } 3038 3039 ioc_info(mrioc, "Running in %s Personality", personality); 3040 3041 ioc_info(mrioc, "FW version(%d.%d.%d.%d.%d.%d)\n", 3042 fwver->gen_major, fwver->gen_minor, fwver->ph_major, 3043 fwver->ph_minor, fwver->cust_id, fwver->build_num); 3044 3045 for (i = 0; i < ARRAY_SIZE(mpi3mr_protocols); i++) { 3046 if (mrioc->facts.protocol_flags & 3047 mpi3mr_protocols[i].protocol) { 3048 bytes_written += scnprintf(protocol + bytes_written, 3049 sizeof(protocol) - bytes_written, "%s%s", 3050 bytes_written ? "," : "", 3051 mpi3mr_protocols[i].name); 3052 } 3053 } 3054 3055 bytes_written = 0; 3056 for (i = 0; i < ARRAY_SIZE(mpi3mr_capabilities); i++) { 3057 if (mrioc->facts.protocol_flags & 3058 mpi3mr_capabilities[i].capability) { 3059 bytes_written += scnprintf(capabilities + bytes_written, 3060 sizeof(capabilities) - bytes_written, "%s%s", 3061 bytes_written ? "," : "", 3062 mpi3mr_capabilities[i].name); 3063 } 3064 } 3065 3066 ioc_info(mrioc, "Protocol=(%s), Capabilities=(%s)\n", 3067 protocol, capabilities); 3068 } 3069 3070 /** 3071 * mpi3mr_cleanup_resources - Free PCI resources 3072 * @mrioc: Adapter instance reference 3073 * 3074 * Unmap PCI device memory and disable PCI device. 3075 * 3076 * Return: 0 on success and non-zero on failure. 3077 */ 3078 void mpi3mr_cleanup_resources(struct mpi3mr_ioc *mrioc) 3079 { 3080 struct pci_dev *pdev = mrioc->pdev; 3081 3082 mpi3mr_cleanup_isr(mrioc); 3083 3084 if (mrioc->sysif_regs) { 3085 iounmap((void __iomem *)mrioc->sysif_regs); 3086 mrioc->sysif_regs = NULL; 3087 } 3088 3089 if (pci_is_enabled(pdev)) { 3090 if (mrioc->bars) 3091 pci_release_selected_regions(pdev, mrioc->bars); 3092 pci_disable_device(pdev); 3093 } 3094 } 3095 3096 /** 3097 * mpi3mr_setup_resources - Enable PCI resources 3098 * @mrioc: Adapter instance reference 3099 * 3100 * Enable PCI device memory, MSI-x registers and set DMA mask. 3101 * 3102 * Return: 0 on success and non-zero on failure. 3103 */ 3104 int mpi3mr_setup_resources(struct mpi3mr_ioc *mrioc) 3105 { 3106 struct pci_dev *pdev = mrioc->pdev; 3107 u32 memap_sz = 0; 3108 int i, retval = 0, capb = 0; 3109 u16 message_control; 3110 u64 dma_mask = mrioc->dma_mask ? mrioc->dma_mask : 3111 (((dma_get_required_mask(&pdev->dev) > DMA_BIT_MASK(32)) && 3112 (sizeof(dma_addr_t) > 4)) ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32)); 3113 3114 if (pci_enable_device_mem(pdev)) { 3115 ioc_err(mrioc, "pci_enable_device_mem: failed\n"); 3116 retval = -ENODEV; 3117 goto out_failed; 3118 } 3119 3120 capb = pci_find_capability(pdev, PCI_CAP_ID_MSIX); 3121 if (!capb) { 3122 ioc_err(mrioc, "Unable to find MSI-X Capabilities\n"); 3123 retval = -ENODEV; 3124 goto out_failed; 3125 } 3126 mrioc->bars = pci_select_bars(pdev, IORESOURCE_MEM); 3127 3128 if (pci_request_selected_regions(pdev, mrioc->bars, 3129 mrioc->driver_name)) { 3130 ioc_err(mrioc, "pci_request_selected_regions: failed\n"); 3131 retval = -ENODEV; 3132 goto out_failed; 3133 } 3134 3135 for (i = 0; (i < DEVICE_COUNT_RESOURCE); i++) { 3136 if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { 3137 mrioc->sysif_regs_phys = pci_resource_start(pdev, i); 3138 memap_sz = pci_resource_len(pdev, i); 3139 mrioc->sysif_regs = 3140 ioremap(mrioc->sysif_regs_phys, memap_sz); 3141 break; 3142 } 3143 } 3144 3145 pci_set_master(pdev); 3146 3147 retval = dma_set_mask_and_coherent(&pdev->dev, dma_mask); 3148 if (retval) { 3149 if (dma_mask != DMA_BIT_MASK(32)) { 3150 ioc_warn(mrioc, "Setting 64 bit DMA mask failed\n"); 3151 dma_mask = DMA_BIT_MASK(32); 3152 retval = dma_set_mask_and_coherent(&pdev->dev, 3153 dma_mask); 3154 } 3155 if (retval) { 3156 mrioc->dma_mask = 0; 3157 ioc_err(mrioc, "Setting 32 bit DMA mask also failed\n"); 3158 goto out_failed; 3159 } 3160 } 3161 mrioc->dma_mask = dma_mask; 3162 3163 if (!mrioc->sysif_regs) { 3164 ioc_err(mrioc, 3165 "Unable to map adapter memory or resource not found\n"); 3166 retval = -EINVAL; 3167 goto out_failed; 3168 } 3169 3170 pci_read_config_word(pdev, capb + 2, &message_control); 3171 mrioc->msix_count = (message_control & 0x3FF) + 1; 3172 3173 pci_save_state(pdev); 3174 3175 pci_set_drvdata(pdev, mrioc->shost); 3176 3177 mpi3mr_ioc_disable_intr(mrioc); 3178 3179 ioc_info(mrioc, "iomem(0x%016llx), mapped(0x%p), size(%d)\n", 3180 (unsigned long long)mrioc->sysif_regs_phys, 3181 mrioc->sysif_regs, memap_sz); 3182 ioc_info(mrioc, "Number of MSI-X vectors found in capabilities: (%d)\n", 3183 mrioc->msix_count); 3184 return retval; 3185 3186 out_failed: 3187 mpi3mr_cleanup_resources(mrioc); 3188 return retval; 3189 } 3190 3191 /** 3192 * mpi3mr_init_ioc - Initialize the controller 3193 * @mrioc: Adapter instance reference 3194 * @init_type: Flag to indicate is the init_type 3195 * 3196 * This the controller initialization routine, executed either 3197 * after soft reset or from pci probe callback. 3198 * Setup the required resources, memory map the controller 3199 * registers, create admin and operational reply queue pairs, 3200 * allocate required memory for reply pool, sense buffer pool, 3201 * issue IOC init request to the firmware, unmask the events and 3202 * issue port enable to discover SAS/SATA/NVMe devies and RAID 3203 * volumes. 3204 * 3205 * Return: 0 on success and non-zero on failure. 3206 */ 3207 int mpi3mr_init_ioc(struct mpi3mr_ioc *mrioc, u8 init_type) 3208 { 3209 int retval = 0; 3210 enum mpi3mr_iocstate ioc_state; 3211 u64 base_info; 3212 u32 timeout; 3213 u32 ioc_status, ioc_config, i; 3214 struct mpi3_ioc_facts_data facts_data; 3215 3216 mrioc->irqpoll_sleep = MPI3MR_IRQ_POLL_SLEEP; 3217 mrioc->change_count = 0; 3218 if (init_type == MPI3MR_IT_INIT) { 3219 mrioc->cpu_count = num_online_cpus(); 3220 retval = mpi3mr_setup_resources(mrioc); 3221 if (retval) { 3222 ioc_err(mrioc, "Failed to setup resources:error %d\n", 3223 retval); 3224 goto out_nocleanup; 3225 } 3226 } 3227 3228 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 3229 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 3230 3231 ioc_info(mrioc, "SOD status %x configuration %x\n", 3232 ioc_status, ioc_config); 3233 3234 base_info = lo_hi_readq(&mrioc->sysif_regs->ioc_information); 3235 ioc_info(mrioc, "SOD base_info %llx\n", base_info); 3236 3237 /*The timeout value is in 2sec unit, changing it to seconds*/ 3238 mrioc->ready_timeout = 3239 ((base_info & MPI3_SYSIF_IOC_INFO_LOW_TIMEOUT_MASK) >> 3240 MPI3_SYSIF_IOC_INFO_LOW_TIMEOUT_SHIFT) * 2; 3241 3242 ioc_info(mrioc, "IOC ready timeout %d\n", mrioc->ready_timeout); 3243 3244 ioc_state = mpi3mr_get_iocstate(mrioc); 3245 ioc_info(mrioc, "IOC in %s state during detection\n", 3246 mpi3mr_iocstate_name(ioc_state)); 3247 3248 if (ioc_state == MRIOC_STATE_BECOMING_READY || 3249 ioc_state == MRIOC_STATE_RESET_REQUESTED) { 3250 timeout = mrioc->ready_timeout * 10; 3251 do { 3252 msleep(100); 3253 } while (--timeout); 3254 3255 ioc_state = mpi3mr_get_iocstate(mrioc); 3256 ioc_info(mrioc, 3257 "IOC in %s state after waiting for reset time\n", 3258 mpi3mr_iocstate_name(ioc_state)); 3259 } 3260 3261 if (ioc_state == MRIOC_STATE_READY) { 3262 retval = mpi3mr_issue_and_process_mur(mrioc, 3263 MPI3MR_RESET_FROM_BRINGUP); 3264 if (retval) { 3265 ioc_err(mrioc, "Failed to MU reset IOC error %d\n", 3266 retval); 3267 } 3268 ioc_state = mpi3mr_get_iocstate(mrioc); 3269 } 3270 if (ioc_state != MRIOC_STATE_RESET) { 3271 mpi3mr_print_fault_info(mrioc); 3272 retval = mpi3mr_issue_reset(mrioc, 3273 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET, 3274 MPI3MR_RESET_FROM_BRINGUP); 3275 if (retval) { 3276 ioc_err(mrioc, 3277 "%s :Failed to soft reset IOC error %d\n", 3278 __func__, retval); 3279 goto out_failed; 3280 } 3281 } 3282 ioc_state = mpi3mr_get_iocstate(mrioc); 3283 if (ioc_state != MRIOC_STATE_RESET) { 3284 retval = -1; 3285 ioc_err(mrioc, "Cannot bring IOC to reset state\n"); 3286 goto out_failed; 3287 } 3288 3289 retval = mpi3mr_setup_admin_qpair(mrioc); 3290 if (retval) { 3291 ioc_err(mrioc, "Failed to setup admin Qs: error %d\n", 3292 retval); 3293 goto out_failed; 3294 } 3295 3296 retval = mpi3mr_bring_ioc_ready(mrioc); 3297 if (retval) { 3298 ioc_err(mrioc, "Failed to bring ioc ready: error %d\n", 3299 retval); 3300 goto out_failed; 3301 } 3302 3303 if (init_type != MPI3MR_IT_RESET) { 3304 retval = mpi3mr_setup_isr(mrioc, 1); 3305 if (retval) { 3306 ioc_err(mrioc, "Failed to setup ISR error %d\n", 3307 retval); 3308 goto out_failed; 3309 } 3310 } else 3311 mpi3mr_ioc_enable_intr(mrioc); 3312 3313 retval = mpi3mr_issue_iocfacts(mrioc, &facts_data); 3314 if (retval) { 3315 ioc_err(mrioc, "Failed to Issue IOC Facts %d\n", 3316 retval); 3317 goto out_failed; 3318 } 3319 3320 mpi3mr_process_factsdata(mrioc, &facts_data); 3321 if (init_type == MPI3MR_IT_INIT) { 3322 retval = mpi3mr_check_reset_dma_mask(mrioc); 3323 if (retval) { 3324 ioc_err(mrioc, "Resetting dma mask failed %d\n", 3325 retval); 3326 goto out_failed; 3327 } 3328 } 3329 3330 mpi3mr_print_ioc_info(mrioc); 3331 3332 retval = mpi3mr_alloc_reply_sense_bufs(mrioc); 3333 if (retval) { 3334 ioc_err(mrioc, 3335 "%s :Failed to allocated reply sense buffers %d\n", 3336 __func__, retval); 3337 goto out_failed; 3338 } 3339 3340 if (init_type == MPI3MR_IT_INIT) { 3341 retval = mpi3mr_alloc_chain_bufs(mrioc); 3342 if (retval) { 3343 ioc_err(mrioc, "Failed to allocated chain buffers %d\n", 3344 retval); 3345 goto out_failed; 3346 } 3347 } 3348 3349 retval = mpi3mr_issue_iocinit(mrioc); 3350 if (retval) { 3351 ioc_err(mrioc, "Failed to Issue IOC Init %d\n", 3352 retval); 3353 goto out_failed; 3354 } 3355 mrioc->reply_free_queue_host_index = mrioc->num_reply_bufs; 3356 writel(mrioc->reply_free_queue_host_index, 3357 &mrioc->sysif_regs->reply_free_host_index); 3358 3359 mrioc->sbq_host_index = mrioc->num_sense_bufs; 3360 writel(mrioc->sbq_host_index, 3361 &mrioc->sysif_regs->sense_buffer_free_host_index); 3362 3363 if (init_type != MPI3MR_IT_RESET) { 3364 retval = mpi3mr_setup_isr(mrioc, 0); 3365 if (retval) { 3366 ioc_err(mrioc, "Failed to re-setup ISR, error %d\n", 3367 retval); 3368 goto out_failed; 3369 } 3370 } 3371 3372 retval = mpi3mr_create_op_queues(mrioc); 3373 if (retval) { 3374 ioc_err(mrioc, "Failed to create OpQueues error %d\n", 3375 retval); 3376 goto out_failed; 3377 } 3378 3379 if ((init_type != MPI3MR_IT_INIT) && 3380 (mrioc->shost->nr_hw_queues > mrioc->num_op_reply_q)) { 3381 retval = -1; 3382 ioc_err(mrioc, 3383 "Cannot create minimum number of OpQueues expected:%d created:%d\n", 3384 mrioc->shost->nr_hw_queues, mrioc->num_op_reply_q); 3385 goto out_failed; 3386 } 3387 3388 for (i = 0; i < MPI3_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 3389 mrioc->event_masks[i] = -1; 3390 3391 mpi3mr_unmask_events(mrioc, MPI3_EVENT_DEVICE_ADDED); 3392 mpi3mr_unmask_events(mrioc, MPI3_EVENT_DEVICE_INFO_CHANGED); 3393 mpi3mr_unmask_events(mrioc, MPI3_EVENT_DEVICE_STATUS_CHANGE); 3394 mpi3mr_unmask_events(mrioc, MPI3_EVENT_ENCL_DEVICE_STATUS_CHANGE); 3395 mpi3mr_unmask_events(mrioc, MPI3_EVENT_SAS_TOPOLOGY_CHANGE_LIST); 3396 mpi3mr_unmask_events(mrioc, MPI3_EVENT_SAS_DISCOVERY); 3397 mpi3mr_unmask_events(mrioc, MPI3_EVENT_SAS_DEVICE_DISCOVERY_ERROR); 3398 mpi3mr_unmask_events(mrioc, MPI3_EVENT_SAS_BROADCAST_PRIMITIVE); 3399 mpi3mr_unmask_events(mrioc, MPI3_EVENT_PCIE_TOPOLOGY_CHANGE_LIST); 3400 mpi3mr_unmask_events(mrioc, MPI3_EVENT_PCIE_ENUMERATION); 3401 mpi3mr_unmask_events(mrioc, MPI3_EVENT_CABLE_MGMT); 3402 mpi3mr_unmask_events(mrioc, MPI3_EVENT_ENERGY_PACK_CHANGE); 3403 3404 retval = mpi3mr_issue_event_notification(mrioc); 3405 if (retval) { 3406 ioc_err(mrioc, "Failed to issue event notification %d\n", 3407 retval); 3408 goto out_failed; 3409 } 3410 3411 if (init_type != MPI3MR_IT_INIT) { 3412 ioc_info(mrioc, "Issuing Port Enable\n"); 3413 retval = mpi3mr_issue_port_enable(mrioc, 0); 3414 if (retval) { 3415 ioc_err(mrioc, "Failed to issue port enable %d\n", 3416 retval); 3417 goto out_failed; 3418 } 3419 } 3420 return retval; 3421 3422 out_failed: 3423 if (init_type == MPI3MR_IT_INIT) 3424 mpi3mr_cleanup_ioc(mrioc, MPI3MR_COMPLETE_CLEANUP); 3425 else 3426 mpi3mr_cleanup_ioc(mrioc, MPI3MR_REINIT_FAILURE); 3427 out_nocleanup: 3428 return retval; 3429 } 3430 3431 /** 3432 * mpi3mr_memset_op_reply_q_buffers - memset the operational reply queue's 3433 * segments 3434 * @mrioc: Adapter instance reference 3435 * @qidx: Operational reply queue index 3436 * 3437 * Return: Nothing. 3438 */ 3439 static void mpi3mr_memset_op_reply_q_buffers(struct mpi3mr_ioc *mrioc, u16 qidx) 3440 { 3441 struct op_reply_qinfo *op_reply_q = mrioc->op_reply_qinfo + qidx; 3442 struct segments *segments; 3443 int i, size; 3444 3445 if (!op_reply_q->q_segments) 3446 return; 3447 3448 size = op_reply_q->segment_qd * mrioc->op_reply_desc_sz; 3449 segments = op_reply_q->q_segments; 3450 for (i = 0; i < op_reply_q->num_segments; i++) 3451 memset(segments[i].segment, 0, size); 3452 } 3453 3454 /** 3455 * mpi3mr_memset_op_req_q_buffers - memset the operational request queue's 3456 * segments 3457 * @mrioc: Adapter instance reference 3458 * @qidx: Operational request queue index 3459 * 3460 * Return: Nothing. 3461 */ 3462 static void mpi3mr_memset_op_req_q_buffers(struct mpi3mr_ioc *mrioc, u16 qidx) 3463 { 3464 struct op_req_qinfo *op_req_q = mrioc->req_qinfo + qidx; 3465 struct segments *segments; 3466 int i, size; 3467 3468 if (!op_req_q->q_segments) 3469 return; 3470 3471 size = op_req_q->segment_qd * mrioc->facts.op_req_sz; 3472 segments = op_req_q->q_segments; 3473 for (i = 0; i < op_req_q->num_segments; i++) 3474 memset(segments[i].segment, 0, size); 3475 } 3476 3477 /** 3478 * mpi3mr_memset_buffers - memset memory for a controller 3479 * @mrioc: Adapter instance reference 3480 * 3481 * clear all the memory allocated for a controller, typically 3482 * called post reset to reuse the memory allocated during the 3483 * controller init. 3484 * 3485 * Return: Nothing. 3486 */ 3487 void mpi3mr_memset_buffers(struct mpi3mr_ioc *mrioc) 3488 { 3489 u16 i; 3490 3491 memset(mrioc->admin_req_base, 0, mrioc->admin_req_q_sz); 3492 memset(mrioc->admin_reply_base, 0, mrioc->admin_reply_q_sz); 3493 3494 memset(mrioc->init_cmds.reply, 0, sizeof(*mrioc->init_cmds.reply)); 3495 memset(mrioc->host_tm_cmds.reply, 0, 3496 sizeof(*mrioc->host_tm_cmds.reply)); 3497 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) 3498 memset(mrioc->dev_rmhs_cmds[i].reply, 0, 3499 sizeof(*mrioc->dev_rmhs_cmds[i].reply)); 3500 memset(mrioc->removepend_bitmap, 0, mrioc->dev_handle_bitmap_sz); 3501 memset(mrioc->devrem_bitmap, 0, mrioc->devrem_bitmap_sz); 3502 3503 for (i = 0; i < mrioc->num_queues; i++) { 3504 mrioc->op_reply_qinfo[i].qid = 0; 3505 mrioc->op_reply_qinfo[i].ci = 0; 3506 mrioc->op_reply_qinfo[i].num_replies = 0; 3507 mrioc->op_reply_qinfo[i].ephase = 0; 3508 atomic_set(&mrioc->op_reply_qinfo[i].pend_ios, 0); 3509 atomic_set(&mrioc->op_reply_qinfo[i].in_use, 0); 3510 mpi3mr_memset_op_reply_q_buffers(mrioc, i); 3511 3512 mrioc->req_qinfo[i].ci = 0; 3513 mrioc->req_qinfo[i].pi = 0; 3514 mrioc->req_qinfo[i].num_requests = 0; 3515 mrioc->req_qinfo[i].qid = 0; 3516 mrioc->req_qinfo[i].reply_qid = 0; 3517 spin_lock_init(&mrioc->req_qinfo[i].q_lock); 3518 mpi3mr_memset_op_req_q_buffers(mrioc, i); 3519 } 3520 } 3521 3522 /** 3523 * mpi3mr_free_mem - Free memory allocated for a controller 3524 * @mrioc: Adapter instance reference 3525 * 3526 * Free all the memory allocated for a controller. 3527 * 3528 * Return: Nothing. 3529 */ 3530 static void mpi3mr_free_mem(struct mpi3mr_ioc *mrioc) 3531 { 3532 u16 i; 3533 struct mpi3mr_intr_info *intr_info; 3534 3535 if (mrioc->sense_buf_pool) { 3536 if (mrioc->sense_buf) 3537 dma_pool_free(mrioc->sense_buf_pool, mrioc->sense_buf, 3538 mrioc->sense_buf_dma); 3539 dma_pool_destroy(mrioc->sense_buf_pool); 3540 mrioc->sense_buf = NULL; 3541 mrioc->sense_buf_pool = NULL; 3542 } 3543 if (mrioc->sense_buf_q_pool) { 3544 if (mrioc->sense_buf_q) 3545 dma_pool_free(mrioc->sense_buf_q_pool, 3546 mrioc->sense_buf_q, mrioc->sense_buf_q_dma); 3547 dma_pool_destroy(mrioc->sense_buf_q_pool); 3548 mrioc->sense_buf_q = NULL; 3549 mrioc->sense_buf_q_pool = NULL; 3550 } 3551 3552 if (mrioc->reply_buf_pool) { 3553 if (mrioc->reply_buf) 3554 dma_pool_free(mrioc->reply_buf_pool, mrioc->reply_buf, 3555 mrioc->reply_buf_dma); 3556 dma_pool_destroy(mrioc->reply_buf_pool); 3557 mrioc->reply_buf = NULL; 3558 mrioc->reply_buf_pool = NULL; 3559 } 3560 if (mrioc->reply_free_q_pool) { 3561 if (mrioc->reply_free_q) 3562 dma_pool_free(mrioc->reply_free_q_pool, 3563 mrioc->reply_free_q, mrioc->reply_free_q_dma); 3564 dma_pool_destroy(mrioc->reply_free_q_pool); 3565 mrioc->reply_free_q = NULL; 3566 mrioc->reply_free_q_pool = NULL; 3567 } 3568 3569 for (i = 0; i < mrioc->num_op_req_q; i++) 3570 mpi3mr_free_op_req_q_segments(mrioc, i); 3571 3572 for (i = 0; i < mrioc->num_op_reply_q; i++) 3573 mpi3mr_free_op_reply_q_segments(mrioc, i); 3574 3575 for (i = 0; i < mrioc->intr_info_count; i++) { 3576 intr_info = mrioc->intr_info + i; 3577 intr_info->op_reply_q = NULL; 3578 } 3579 3580 kfree(mrioc->req_qinfo); 3581 mrioc->req_qinfo = NULL; 3582 mrioc->num_op_req_q = 0; 3583 3584 kfree(mrioc->op_reply_qinfo); 3585 mrioc->op_reply_qinfo = NULL; 3586 mrioc->num_op_reply_q = 0; 3587 3588 kfree(mrioc->init_cmds.reply); 3589 mrioc->init_cmds.reply = NULL; 3590 3591 kfree(mrioc->host_tm_cmds.reply); 3592 mrioc->host_tm_cmds.reply = NULL; 3593 3594 kfree(mrioc->removepend_bitmap); 3595 mrioc->removepend_bitmap = NULL; 3596 3597 kfree(mrioc->devrem_bitmap); 3598 mrioc->devrem_bitmap = NULL; 3599 3600 kfree(mrioc->chain_bitmap); 3601 mrioc->chain_bitmap = NULL; 3602 3603 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) { 3604 kfree(mrioc->dev_rmhs_cmds[i].reply); 3605 mrioc->dev_rmhs_cmds[i].reply = NULL; 3606 } 3607 3608 if (mrioc->chain_buf_pool) { 3609 for (i = 0; i < mrioc->chain_buf_count; i++) { 3610 if (mrioc->chain_sgl_list[i].addr) { 3611 dma_pool_free(mrioc->chain_buf_pool, 3612 mrioc->chain_sgl_list[i].addr, 3613 mrioc->chain_sgl_list[i].dma_addr); 3614 mrioc->chain_sgl_list[i].addr = NULL; 3615 } 3616 } 3617 dma_pool_destroy(mrioc->chain_buf_pool); 3618 mrioc->chain_buf_pool = NULL; 3619 } 3620 3621 kfree(mrioc->chain_sgl_list); 3622 mrioc->chain_sgl_list = NULL; 3623 3624 if (mrioc->admin_reply_base) { 3625 dma_free_coherent(&mrioc->pdev->dev, mrioc->admin_reply_q_sz, 3626 mrioc->admin_reply_base, mrioc->admin_reply_dma); 3627 mrioc->admin_reply_base = NULL; 3628 } 3629 if (mrioc->admin_req_base) { 3630 dma_free_coherent(&mrioc->pdev->dev, mrioc->admin_req_q_sz, 3631 mrioc->admin_req_base, mrioc->admin_req_dma); 3632 mrioc->admin_req_base = NULL; 3633 } 3634 } 3635 3636 /** 3637 * mpi3mr_issue_ioc_shutdown - shutdown controller 3638 * @mrioc: Adapter instance reference 3639 * 3640 * Send shutodwn notification to the controller and wait for the 3641 * shutdown_timeout for it to be completed. 3642 * 3643 * Return: Nothing. 3644 */ 3645 static void mpi3mr_issue_ioc_shutdown(struct mpi3mr_ioc *mrioc) 3646 { 3647 u32 ioc_config, ioc_status; 3648 u8 retval = 1; 3649 u32 timeout = MPI3MR_DEFAULT_SHUTDOWN_TIME * 10; 3650 3651 ioc_info(mrioc, "Issuing shutdown Notification\n"); 3652 if (mrioc->unrecoverable) { 3653 ioc_warn(mrioc, 3654 "IOC is unrecoverable shutdown is not issued\n"); 3655 return; 3656 } 3657 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 3658 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_SHUTDOWN_MASK) 3659 == MPI3_SYSIF_IOC_STATUS_SHUTDOWN_IN_PROGRESS) { 3660 ioc_info(mrioc, "shutdown already in progress\n"); 3661 return; 3662 } 3663 3664 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 3665 ioc_config |= MPI3_SYSIF_IOC_CONFIG_SHUTDOWN_NORMAL; 3666 ioc_config |= MPI3_SYSIF_IOC_CONFIG_DEVICE_SHUTDOWN; 3667 3668 writel(ioc_config, &mrioc->sysif_regs->ioc_configuration); 3669 3670 if (mrioc->facts.shutdown_timeout) 3671 timeout = mrioc->facts.shutdown_timeout * 10; 3672 3673 do { 3674 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 3675 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_SHUTDOWN_MASK) 3676 == MPI3_SYSIF_IOC_STATUS_SHUTDOWN_COMPLETE) { 3677 retval = 0; 3678 break; 3679 } 3680 msleep(100); 3681 } while (--timeout); 3682 3683 ioc_status = readl(&mrioc->sysif_regs->ioc_status); 3684 ioc_config = readl(&mrioc->sysif_regs->ioc_configuration); 3685 3686 if (retval) { 3687 if ((ioc_status & MPI3_SYSIF_IOC_STATUS_SHUTDOWN_MASK) 3688 == MPI3_SYSIF_IOC_STATUS_SHUTDOWN_IN_PROGRESS) 3689 ioc_warn(mrioc, 3690 "shutdown still in progress after timeout\n"); 3691 } 3692 3693 ioc_info(mrioc, 3694 "Base IOC Sts/Config after %s shutdown is (0x%x)/(0x%x)\n", 3695 (!retval) ? "successful" : "failed", ioc_status, 3696 ioc_config); 3697 } 3698 3699 /** 3700 * mpi3mr_cleanup_ioc - Cleanup controller 3701 * @mrioc: Adapter instance reference 3702 * @reason: Cleanup reason 3703 * 3704 * controller cleanup handler, Message unit reset or soft reset 3705 * and shutdown notification is issued to the controller and the 3706 * associated memory resources are freed. 3707 * 3708 * Return: Nothing. 3709 */ 3710 void mpi3mr_cleanup_ioc(struct mpi3mr_ioc *mrioc, u8 reason) 3711 { 3712 enum mpi3mr_iocstate ioc_state; 3713 3714 if (reason == MPI3MR_COMPLETE_CLEANUP) 3715 mpi3mr_stop_watchdog(mrioc); 3716 3717 mpi3mr_ioc_disable_intr(mrioc); 3718 3719 ioc_state = mpi3mr_get_iocstate(mrioc); 3720 3721 if ((!mrioc->unrecoverable) && (!mrioc->reset_in_progress) && 3722 (ioc_state == MRIOC_STATE_READY)) { 3723 if (mpi3mr_issue_and_process_mur(mrioc, 3724 MPI3MR_RESET_FROM_CTLR_CLEANUP)) 3725 mpi3mr_issue_reset(mrioc, 3726 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET, 3727 MPI3MR_RESET_FROM_MUR_FAILURE); 3728 3729 if (reason != MPI3MR_REINIT_FAILURE) 3730 mpi3mr_issue_ioc_shutdown(mrioc); 3731 } 3732 3733 if (reason == MPI3MR_COMPLETE_CLEANUP) { 3734 mpi3mr_free_mem(mrioc); 3735 mpi3mr_cleanup_resources(mrioc); 3736 } 3737 } 3738 3739 /** 3740 * mpi3mr_drv_cmd_comp_reset - Flush a internal driver command 3741 * @mrioc: Adapter instance reference 3742 * @cmdptr: Internal command tracker 3743 * 3744 * Complete an internal driver commands with state indicating it 3745 * is completed due to reset. 3746 * 3747 * Return: Nothing. 3748 */ 3749 static inline void mpi3mr_drv_cmd_comp_reset(struct mpi3mr_ioc *mrioc, 3750 struct mpi3mr_drv_cmd *cmdptr) 3751 { 3752 if (cmdptr->state & MPI3MR_CMD_PENDING) { 3753 cmdptr->state |= MPI3MR_CMD_RESET; 3754 cmdptr->state &= ~MPI3MR_CMD_PENDING; 3755 if (cmdptr->is_waiting) { 3756 complete(&cmdptr->done); 3757 cmdptr->is_waiting = 0; 3758 } else if (cmdptr->callback) 3759 cmdptr->callback(mrioc, cmdptr); 3760 } 3761 } 3762 3763 /** 3764 * mpi3mr_flush_drv_cmds - Flush internaldriver commands 3765 * @mrioc: Adapter instance reference 3766 * 3767 * Flush all internal driver commands post reset 3768 * 3769 * Return: Nothing. 3770 */ 3771 static void mpi3mr_flush_drv_cmds(struct mpi3mr_ioc *mrioc) 3772 { 3773 struct mpi3mr_drv_cmd *cmdptr; 3774 u8 i; 3775 3776 cmdptr = &mrioc->init_cmds; 3777 mpi3mr_drv_cmd_comp_reset(mrioc, cmdptr); 3778 cmdptr = &mrioc->host_tm_cmds; 3779 mpi3mr_drv_cmd_comp_reset(mrioc, cmdptr); 3780 3781 for (i = 0; i < MPI3MR_NUM_DEVRMCMD; i++) { 3782 cmdptr = &mrioc->dev_rmhs_cmds[i]; 3783 mpi3mr_drv_cmd_comp_reset(mrioc, cmdptr); 3784 } 3785 } 3786 3787 /** 3788 * mpi3mr_diagfault_reset_handler - Diag fault reset handler 3789 * @mrioc: Adapter instance reference 3790 * @reset_reason: Reset reason code 3791 * 3792 * This is an handler for issuing diag fault reset from the 3793 * applications through IOCTL path to stop the execution of the 3794 * controller 3795 * 3796 * Return: 0 on success, non-zero on failure. 3797 */ 3798 int mpi3mr_diagfault_reset_handler(struct mpi3mr_ioc *mrioc, 3799 u32 reset_reason) 3800 { 3801 int retval = 0; 3802 3803 ioc_info(mrioc, "Entry: reason code: %s\n", 3804 mpi3mr_reset_rc_name(reset_reason)); 3805 mrioc->reset_in_progress = 1; 3806 3807 mpi3mr_ioc_disable_intr(mrioc); 3808 3809 retval = mpi3mr_issue_reset(mrioc, 3810 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, reset_reason); 3811 3812 if (retval) { 3813 ioc_err(mrioc, "The diag fault reset failed: reason %d\n", 3814 reset_reason); 3815 mpi3mr_ioc_enable_intr(mrioc); 3816 } 3817 ioc_info(mrioc, "%s\n", ((retval == 0) ? "SUCCESS" : "FAILED")); 3818 mrioc->reset_in_progress = 0; 3819 return retval; 3820 } 3821 3822 /** 3823 * mpi3mr_soft_reset_handler - Reset the controller 3824 * @mrioc: Adapter instance reference 3825 * @reset_reason: Reset reason code 3826 * @snapdump: Flag to generate snapdump in firmware or not 3827 * 3828 * This is an handler for recovering controller by issuing soft 3829 * reset are diag fault reset. This is a blocking function and 3830 * when one reset is executed if any other resets they will be 3831 * blocked. All IOCTLs/IO will be blocked during the reset. If 3832 * controller reset is successful then the controller will be 3833 * reinitalized, otherwise the controller will be marked as not 3834 * recoverable 3835 * 3836 * In snapdump bit is set, the controller is issued with diag 3837 * fault reset so that the firmware can create a snap dump and 3838 * post that the firmware will result in F000 fault and the 3839 * driver will issue soft reset to recover from that. 3840 * 3841 * Return: 0 on success, non-zero on failure. 3842 */ 3843 int mpi3mr_soft_reset_handler(struct mpi3mr_ioc *mrioc, 3844 u32 reset_reason, u8 snapdump) 3845 { 3846 int retval = 0, i; 3847 unsigned long flags; 3848 u32 host_diagnostic, timeout = MPI3_SYSIF_DIAG_SAVE_TIMEOUT * 10; 3849 3850 if (mrioc->fault_dbg) { 3851 if (snapdump) 3852 mpi3mr_set_diagsave(mrioc); 3853 mpi3mr_kill_ioc(mrioc, reset_reason); 3854 } 3855 3856 /* 3857 * Block new resets until the currently executing one is finished and 3858 * return the status of the existing reset for all blocked resets 3859 */ 3860 if (!mutex_trylock(&mrioc->reset_mutex)) { 3861 ioc_info(mrioc, "Another reset in progress\n"); 3862 return -1; 3863 } 3864 mrioc->reset_in_progress = 1; 3865 3866 if ((!snapdump) && (reset_reason != MPI3MR_RESET_FROM_FAULT_WATCH) && 3867 (reset_reason != MPI3MR_RESET_FROM_CIACTIV_FAULT)) { 3868 for (i = 0; i < MPI3_EVENT_NOTIFY_EVENTMASK_WORDS; i++) 3869 mrioc->event_masks[i] = -1; 3870 3871 retval = mpi3mr_issue_event_notification(mrioc); 3872 3873 if (retval) { 3874 ioc_err(mrioc, 3875 "Failed to turn off events prior to reset %d\n", 3876 retval); 3877 } 3878 } 3879 3880 mpi3mr_wait_for_host_io(mrioc, MPI3MR_RESET_HOST_IOWAIT_TIMEOUT); 3881 3882 mpi3mr_ioc_disable_intr(mrioc); 3883 3884 if (snapdump) { 3885 mpi3mr_set_diagsave(mrioc); 3886 retval = mpi3mr_issue_reset(mrioc, 3887 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, reset_reason); 3888 if (!retval) { 3889 do { 3890 host_diagnostic = 3891 readl(&mrioc->sysif_regs->host_diagnostic); 3892 if (!(host_diagnostic & 3893 MPI3_SYSIF_HOST_DIAG_SAVE_IN_PROGRESS)) 3894 break; 3895 msleep(100); 3896 } while (--timeout); 3897 } 3898 } 3899 3900 retval = mpi3mr_issue_reset(mrioc, 3901 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_SOFT_RESET, reset_reason); 3902 if (retval) { 3903 ioc_err(mrioc, "Failed to issue soft reset to the ioc\n"); 3904 goto out; 3905 } 3906 3907 mpi3mr_flush_delayed_rmhs_list(mrioc); 3908 mpi3mr_flush_drv_cmds(mrioc); 3909 memset(mrioc->devrem_bitmap, 0, mrioc->devrem_bitmap_sz); 3910 memset(mrioc->removepend_bitmap, 0, mrioc->dev_handle_bitmap_sz); 3911 mpi3mr_cleanup_fwevt_list(mrioc); 3912 mpi3mr_flush_host_io(mrioc); 3913 mpi3mr_invalidate_devhandles(mrioc); 3914 mpi3mr_memset_buffers(mrioc); 3915 retval = mpi3mr_init_ioc(mrioc, MPI3MR_IT_RESET); 3916 if (retval) { 3917 pr_err(IOCNAME "reinit after soft reset failed: reason %d\n", 3918 mrioc->name, reset_reason); 3919 goto out; 3920 } 3921 ssleep(10); 3922 3923 out: 3924 if (!retval) { 3925 mrioc->reset_in_progress = 0; 3926 scsi_unblock_requests(mrioc->shost); 3927 mpi3mr_rfresh_tgtdevs(mrioc); 3928 mrioc->ts_update_counter = 0; 3929 spin_lock_irqsave(&mrioc->watchdog_lock, flags); 3930 if (mrioc->watchdog_work_q) 3931 queue_delayed_work(mrioc->watchdog_work_q, 3932 &mrioc->watchdog_work, 3933 msecs_to_jiffies(MPI3MR_WATCHDOG_INTERVAL)); 3934 spin_unlock_irqrestore(&mrioc->watchdog_lock, flags); 3935 } else { 3936 mpi3mr_issue_reset(mrioc, 3937 MPI3_SYSIF_HOST_DIAG_RESET_ACTION_DIAG_FAULT, reset_reason); 3938 mrioc->unrecoverable = 1; 3939 mrioc->reset_in_progress = 0; 3940 retval = -1; 3941 } 3942 3943 mutex_unlock(&mrioc->reset_mutex); 3944 ioc_info(mrioc, "%s\n", ((retval == 0) ? "SUCCESS" : "FAILED")); 3945 return retval; 3946 } 3947