1 /* 2 * linux/drivers/scsi/esas2r/esas2r_init.c 3 * For use with ATTO ExpressSAS R6xx SAS/SATA RAID controllers 4 * 5 * Copyright (c) 2001-2013 ATTO Technology, Inc. 6 * (mailto:linuxdrivers@attotech.com)mpt3sas/mpt3sas_trigger_diag. 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 2 11 * of the License, or (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * NO WARRANTY 19 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 20 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 21 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 22 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 23 * solely responsible for determining the appropriateness of using and 24 * distributing the Program and assumes all risks associated with its 25 * exercise of rights under this Agreement, including but not limited to 26 * the risks and costs of program errors, damage to or loss of data, 27 * programs or equipment, and unavailability or interruption of operations. 28 * 29 * DISCLAIMER OF LIABILITY 30 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 31 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 32 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 33 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 34 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 35 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 36 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 37 * 38 * You should have received a copy of the GNU General Public License 39 * along with this program; if not, write to the Free Software 40 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 41 * USA. 42 */ 43 44 #include "esas2r.h" 45 46 static bool esas2r_initmem_alloc(struct esas2r_adapter *a, 47 struct esas2r_mem_desc *mem_desc, 48 u32 align) 49 { 50 mem_desc->esas2r_param = mem_desc->size + align; 51 mem_desc->virt_addr = NULL; 52 mem_desc->phys_addr = 0; 53 mem_desc->esas2r_data = dma_alloc_coherent(&a->pcid->dev, 54 (size_t)mem_desc-> 55 esas2r_param, 56 (dma_addr_t *)&mem_desc-> 57 phys_addr, 58 GFP_KERNEL); 59 60 if (mem_desc->esas2r_data == NULL) { 61 esas2r_log(ESAS2R_LOG_CRIT, 62 "failed to allocate %lu bytes of consistent memory!", 63 (long 64 unsigned 65 int)mem_desc->esas2r_param); 66 return false; 67 } 68 69 mem_desc->virt_addr = PTR_ALIGN(mem_desc->esas2r_data, align); 70 mem_desc->phys_addr = ALIGN(mem_desc->phys_addr, align); 71 memset(mem_desc->virt_addr, 0, mem_desc->size); 72 return true; 73 } 74 75 static void esas2r_initmem_free(struct esas2r_adapter *a, 76 struct esas2r_mem_desc *mem_desc) 77 { 78 if (mem_desc->virt_addr == NULL) 79 return; 80 81 /* 82 * Careful! phys_addr and virt_addr may have been adjusted from the 83 * original allocation in order to return the desired alignment. That 84 * means we have to use the original address (in esas2r_data) and size 85 * (esas2r_param) and calculate the original physical address based on 86 * the difference between the requested and actual allocation size. 87 */ 88 if (mem_desc->phys_addr) { 89 int unalign = ((u8 *)mem_desc->virt_addr) - 90 ((u8 *)mem_desc->esas2r_data); 91 92 dma_free_coherent(&a->pcid->dev, 93 (size_t)mem_desc->esas2r_param, 94 mem_desc->esas2r_data, 95 (dma_addr_t)(mem_desc->phys_addr - unalign)); 96 } else { 97 kfree(mem_desc->esas2r_data); 98 } 99 100 mem_desc->virt_addr = NULL; 101 } 102 103 static bool alloc_vda_req(struct esas2r_adapter *a, 104 struct esas2r_request *rq) 105 { 106 struct esas2r_mem_desc *memdesc = kzalloc( 107 sizeof(struct esas2r_mem_desc), GFP_KERNEL); 108 109 if (memdesc == NULL) { 110 esas2r_hdebug("could not alloc mem for vda request memdesc\n"); 111 return false; 112 } 113 114 memdesc->size = sizeof(union atto_vda_req) + 115 ESAS2R_DATA_BUF_LEN; 116 117 if (!esas2r_initmem_alloc(a, memdesc, 256)) { 118 esas2r_hdebug("could not alloc mem for vda request\n"); 119 kfree(memdesc); 120 return false; 121 } 122 123 a->num_vrqs++; 124 list_add(&memdesc->next_desc, &a->vrq_mds_head); 125 126 rq->vrq_md = memdesc; 127 rq->vrq = (union atto_vda_req *)memdesc->virt_addr; 128 rq->vrq->scsi.handle = a->num_vrqs; 129 130 return true; 131 } 132 133 static void esas2r_unmap_regions(struct esas2r_adapter *a) 134 { 135 if (a->regs) 136 iounmap((void __iomem *)a->regs); 137 138 a->regs = NULL; 139 140 pci_release_region(a->pcid, 2); 141 142 if (a->data_window) 143 iounmap((void __iomem *)a->data_window); 144 145 a->data_window = NULL; 146 147 pci_release_region(a->pcid, 0); 148 } 149 150 static int esas2r_map_regions(struct esas2r_adapter *a) 151 { 152 int error; 153 154 a->regs = NULL; 155 a->data_window = NULL; 156 157 error = pci_request_region(a->pcid, 2, a->name); 158 if (error != 0) { 159 esas2r_log(ESAS2R_LOG_CRIT, 160 "pci_request_region(2) failed, error %d", 161 error); 162 163 return error; 164 } 165 166 a->regs = (void __force *)ioremap(pci_resource_start(a->pcid, 2), 167 pci_resource_len(a->pcid, 2)); 168 if (a->regs == NULL) { 169 esas2r_log(ESAS2R_LOG_CRIT, 170 "ioremap failed for regs mem region\n"); 171 pci_release_region(a->pcid, 2); 172 return -EFAULT; 173 } 174 175 error = pci_request_region(a->pcid, 0, a->name); 176 if (error != 0) { 177 esas2r_log(ESAS2R_LOG_CRIT, 178 "pci_request_region(2) failed, error %d", 179 error); 180 esas2r_unmap_regions(a); 181 return error; 182 } 183 184 a->data_window = (void __force *)ioremap(pci_resource_start(a->pcid, 185 0), 186 pci_resource_len(a->pcid, 0)); 187 if (a->data_window == NULL) { 188 esas2r_log(ESAS2R_LOG_CRIT, 189 "ioremap failed for data_window mem region\n"); 190 esas2r_unmap_regions(a); 191 return -EFAULT; 192 } 193 194 return 0; 195 } 196 197 static void esas2r_setup_interrupts(struct esas2r_adapter *a, int intr_mode) 198 { 199 int i; 200 201 /* Set up interrupt mode based on the requested value */ 202 switch (intr_mode) { 203 case INTR_MODE_LEGACY: 204 use_legacy_interrupts: 205 a->intr_mode = INTR_MODE_LEGACY; 206 break; 207 208 case INTR_MODE_MSI: 209 i = pci_enable_msi(a->pcid); 210 if (i != 0) { 211 esas2r_log(ESAS2R_LOG_WARN, 212 "failed to enable MSI for adapter %d, " 213 "falling back to legacy interrupts " 214 "(err=%d)", a->index, 215 i); 216 goto use_legacy_interrupts; 217 } 218 a->intr_mode = INTR_MODE_MSI; 219 set_bit(AF2_MSI_ENABLED, &a->flags2); 220 break; 221 222 223 default: 224 esas2r_log(ESAS2R_LOG_WARN, 225 "unknown interrupt_mode %d requested, " 226 "falling back to legacy interrupt", 227 interrupt_mode); 228 goto use_legacy_interrupts; 229 } 230 } 231 232 static void esas2r_claim_interrupts(struct esas2r_adapter *a) 233 { 234 unsigned long flags = 0; 235 236 if (a->intr_mode == INTR_MODE_LEGACY) 237 flags |= IRQF_SHARED; 238 239 esas2r_log(ESAS2R_LOG_INFO, 240 "esas2r_claim_interrupts irq=%d (%p, %s, %x)", 241 a->pcid->irq, a, a->name, flags); 242 243 if (request_irq(a->pcid->irq, 244 (a->intr_mode == 245 INTR_MODE_LEGACY) ? esas2r_interrupt : 246 esas2r_msi_interrupt, 247 flags, 248 a->name, 249 a)) { 250 esas2r_log(ESAS2R_LOG_CRIT, "unable to request IRQ %02X", 251 a->pcid->irq); 252 return; 253 } 254 255 set_bit(AF2_IRQ_CLAIMED, &a->flags2); 256 esas2r_log(ESAS2R_LOG_INFO, 257 "claimed IRQ %d flags: 0x%lx", 258 a->pcid->irq, flags); 259 } 260 261 int esas2r_init_adapter(struct Scsi_Host *host, struct pci_dev *pcid, 262 int index) 263 { 264 struct esas2r_adapter *a; 265 u64 bus_addr = 0; 266 int i; 267 void *next_uncached; 268 struct esas2r_request *first_request, *last_request; 269 270 if (index >= MAX_ADAPTERS) { 271 esas2r_log(ESAS2R_LOG_CRIT, 272 "tried to init invalid adapter index %u!", 273 index); 274 return 0; 275 } 276 277 if (esas2r_adapters[index]) { 278 esas2r_log(ESAS2R_LOG_CRIT, 279 "tried to init existing adapter index %u!", 280 index); 281 return 0; 282 } 283 284 a = (struct esas2r_adapter *)host->hostdata; 285 memset(a, 0, sizeof(struct esas2r_adapter)); 286 a->pcid = pcid; 287 a->host = host; 288 289 if (sizeof(dma_addr_t) > 4) { 290 const uint64_t required_mask = dma_get_required_mask 291 (&pcid->dev); 292 if (required_mask > DMA_BIT_MASK(32) 293 && !pci_set_dma_mask(pcid, DMA_BIT_MASK(64)) 294 && !pci_set_consistent_dma_mask(pcid, 295 DMA_BIT_MASK(64))) { 296 esas2r_log_dev(ESAS2R_LOG_INFO, 297 &(a->pcid->dev), 298 "64-bit PCI addressing enabled\n"); 299 } else if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) 300 && !pci_set_consistent_dma_mask(pcid, 301 DMA_BIT_MASK(32))) { 302 esas2r_log_dev(ESAS2R_LOG_INFO, 303 &(a->pcid->dev), 304 "32-bit PCI addressing enabled\n"); 305 } else { 306 esas2r_log(ESAS2R_LOG_CRIT, 307 "failed to set DMA mask"); 308 esas2r_kill_adapter(index); 309 return 0; 310 } 311 } else { 312 if (!pci_set_dma_mask(pcid, DMA_BIT_MASK(32)) 313 && !pci_set_consistent_dma_mask(pcid, 314 DMA_BIT_MASK(32))) { 315 esas2r_log_dev(ESAS2R_LOG_INFO, 316 &(a->pcid->dev), 317 "32-bit PCI addressing enabled\n"); 318 } else { 319 esas2r_log(ESAS2R_LOG_CRIT, 320 "failed to set DMA mask"); 321 esas2r_kill_adapter(index); 322 return 0; 323 } 324 } 325 esas2r_adapters[index] = a; 326 sprintf(a->name, ESAS2R_DRVR_NAME "_%02d", index); 327 esas2r_debug("new adapter %p, name %s", a, a->name); 328 spin_lock_init(&a->request_lock); 329 spin_lock_init(&a->fw_event_lock); 330 sema_init(&a->fm_api_semaphore, 1); 331 sema_init(&a->fs_api_semaphore, 1); 332 sema_init(&a->nvram_semaphore, 1); 333 334 esas2r_fw_event_off(a); 335 snprintf(a->fw_event_q_name, ESAS2R_KOBJ_NAME_LEN, "esas2r/%d", 336 a->index); 337 a->fw_event_q = create_singlethread_workqueue(a->fw_event_q_name); 338 339 init_waitqueue_head(&a->buffered_ioctl_waiter); 340 init_waitqueue_head(&a->nvram_waiter); 341 init_waitqueue_head(&a->fm_api_waiter); 342 init_waitqueue_head(&a->fs_api_waiter); 343 init_waitqueue_head(&a->vda_waiter); 344 345 INIT_LIST_HEAD(&a->general_req.req_list); 346 INIT_LIST_HEAD(&a->active_list); 347 INIT_LIST_HEAD(&a->defer_list); 348 INIT_LIST_HEAD(&a->free_sg_list_head); 349 INIT_LIST_HEAD(&a->avail_request); 350 INIT_LIST_HEAD(&a->vrq_mds_head); 351 INIT_LIST_HEAD(&a->fw_event_list); 352 353 first_request = (struct esas2r_request *)((u8 *)(a + 1)); 354 355 for (last_request = first_request, i = 1; i < num_requests; 356 last_request++, i++) { 357 INIT_LIST_HEAD(&last_request->req_list); 358 list_add_tail(&last_request->comp_list, &a->avail_request); 359 if (!alloc_vda_req(a, last_request)) { 360 esas2r_log(ESAS2R_LOG_CRIT, 361 "failed to allocate a VDA request!"); 362 esas2r_kill_adapter(index); 363 return 0; 364 } 365 } 366 367 esas2r_debug("requests: %p to %p (%d, %d)", first_request, 368 last_request, 369 sizeof(*first_request), 370 num_requests); 371 372 if (esas2r_map_regions(a) != 0) { 373 esas2r_log(ESAS2R_LOG_CRIT, "could not map PCI regions!"); 374 esas2r_kill_adapter(index); 375 return 0; 376 } 377 378 a->index = index; 379 380 /* interrupts will be disabled until we are done with init */ 381 atomic_inc(&a->dis_ints_cnt); 382 atomic_inc(&a->disable_cnt); 383 set_bit(AF_CHPRST_PENDING, &a->flags); 384 set_bit(AF_DISC_PENDING, &a->flags); 385 set_bit(AF_FIRST_INIT, &a->flags); 386 set_bit(AF_LEGACY_SGE_MODE, &a->flags); 387 388 a->init_msg = ESAS2R_INIT_MSG_START; 389 a->max_vdareq_size = 128; 390 a->build_sgl = esas2r_build_sg_list_sge; 391 392 esas2r_setup_interrupts(a, interrupt_mode); 393 394 a->uncached_size = esas2r_get_uncached_size(a); 395 a->uncached = dma_alloc_coherent(&pcid->dev, 396 (size_t)a->uncached_size, 397 (dma_addr_t *)&bus_addr, 398 GFP_KERNEL); 399 if (a->uncached == NULL) { 400 esas2r_log(ESAS2R_LOG_CRIT, 401 "failed to allocate %d bytes of consistent memory!", 402 a->uncached_size); 403 esas2r_kill_adapter(index); 404 return 0; 405 } 406 407 a->uncached_phys = bus_addr; 408 409 esas2r_debug("%d bytes uncached memory allocated @ %p (%x:%x)", 410 a->uncached_size, 411 a->uncached, 412 upper_32_bits(bus_addr), 413 lower_32_bits(bus_addr)); 414 memset(a->uncached, 0, a->uncached_size); 415 next_uncached = a->uncached; 416 417 if (!esas2r_init_adapter_struct(a, 418 &next_uncached)) { 419 esas2r_log(ESAS2R_LOG_CRIT, 420 "failed to initialize adapter structure (2)!"); 421 esas2r_kill_adapter(index); 422 return 0; 423 } 424 425 tasklet_init(&a->tasklet, 426 esas2r_adapter_tasklet, 427 (unsigned long)a); 428 429 /* 430 * Disable chip interrupts to prevent spurious interrupts 431 * until we claim the IRQ. 432 */ 433 esas2r_disable_chip_interrupts(a); 434 esas2r_check_adapter(a); 435 436 if (!esas2r_init_adapter_hw(a, true)) 437 esas2r_log(ESAS2R_LOG_CRIT, "failed to initialize hardware!"); 438 else 439 esas2r_debug("esas2r_init_adapter ok"); 440 441 esas2r_claim_interrupts(a); 442 443 if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) 444 esas2r_enable_chip_interrupts(a); 445 446 set_bit(AF2_INIT_DONE, &a->flags2); 447 if (!test_bit(AF_DEGRADED_MODE, &a->flags)) 448 esas2r_kickoff_timer(a); 449 esas2r_debug("esas2r_init_adapter done for %p (%d)", 450 a, a->disable_cnt); 451 452 return 1; 453 } 454 455 static void esas2r_adapter_power_down(struct esas2r_adapter *a, 456 int power_management) 457 { 458 struct esas2r_mem_desc *memdesc, *next; 459 460 if ((test_bit(AF2_INIT_DONE, &a->flags2)) 461 && (!test_bit(AF_DEGRADED_MODE, &a->flags))) { 462 if (!power_management) { 463 del_timer_sync(&a->timer); 464 tasklet_kill(&a->tasklet); 465 } 466 esas2r_power_down(a); 467 468 /* 469 * There are versions of firmware that do not handle the sync 470 * cache command correctly. Stall here to ensure that the 471 * cache is lazily flushed. 472 */ 473 mdelay(500); 474 esas2r_debug("chip halted"); 475 } 476 477 /* Remove sysfs binary files */ 478 if (a->sysfs_fw_created) { 479 sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fw); 480 a->sysfs_fw_created = 0; 481 } 482 483 if (a->sysfs_fs_created) { 484 sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_fs); 485 a->sysfs_fs_created = 0; 486 } 487 488 if (a->sysfs_vda_created) { 489 sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_vda); 490 a->sysfs_vda_created = 0; 491 } 492 493 if (a->sysfs_hw_created) { 494 sysfs_remove_bin_file(&a->host->shost_dev.kobj, &bin_attr_hw); 495 a->sysfs_hw_created = 0; 496 } 497 498 if (a->sysfs_live_nvram_created) { 499 sysfs_remove_bin_file(&a->host->shost_dev.kobj, 500 &bin_attr_live_nvram); 501 a->sysfs_live_nvram_created = 0; 502 } 503 504 if (a->sysfs_default_nvram_created) { 505 sysfs_remove_bin_file(&a->host->shost_dev.kobj, 506 &bin_attr_default_nvram); 507 a->sysfs_default_nvram_created = 0; 508 } 509 510 /* Clean up interrupts */ 511 if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) { 512 esas2r_log_dev(ESAS2R_LOG_INFO, 513 &(a->pcid->dev), 514 "free_irq(%d) called", a->pcid->irq); 515 516 free_irq(a->pcid->irq, a); 517 esas2r_debug("IRQ released"); 518 clear_bit(AF2_IRQ_CLAIMED, &a->flags2); 519 } 520 521 if (test_bit(AF2_MSI_ENABLED, &a->flags2)) { 522 pci_disable_msi(a->pcid); 523 clear_bit(AF2_MSI_ENABLED, &a->flags2); 524 esas2r_debug("MSI disabled"); 525 } 526 527 if (a->inbound_list_md.virt_addr) 528 esas2r_initmem_free(a, &a->inbound_list_md); 529 530 if (a->outbound_list_md.virt_addr) 531 esas2r_initmem_free(a, &a->outbound_list_md); 532 533 list_for_each_entry_safe(memdesc, next, &a->free_sg_list_head, 534 next_desc) { 535 esas2r_initmem_free(a, memdesc); 536 } 537 538 /* Following frees everything allocated via alloc_vda_req */ 539 list_for_each_entry_safe(memdesc, next, &a->vrq_mds_head, next_desc) { 540 esas2r_initmem_free(a, memdesc); 541 list_del(&memdesc->next_desc); 542 kfree(memdesc); 543 } 544 545 kfree(a->first_ae_req); 546 a->first_ae_req = NULL; 547 548 kfree(a->sg_list_mds); 549 a->sg_list_mds = NULL; 550 551 kfree(a->req_table); 552 a->req_table = NULL; 553 554 if (a->regs) { 555 esas2r_unmap_regions(a); 556 a->regs = NULL; 557 a->data_window = NULL; 558 esas2r_debug("regions unmapped"); 559 } 560 } 561 562 /* Release/free allocated resources for specified adapters. */ 563 void esas2r_kill_adapter(int i) 564 { 565 struct esas2r_adapter *a = esas2r_adapters[i]; 566 567 if (a) { 568 unsigned long flags; 569 struct workqueue_struct *wq; 570 esas2r_debug("killing adapter %p [%d] ", a, i); 571 esas2r_fw_event_off(a); 572 esas2r_adapter_power_down(a, 0); 573 if (esas2r_buffered_ioctl && 574 (a->pcid == esas2r_buffered_ioctl_pcid)) { 575 dma_free_coherent(&a->pcid->dev, 576 (size_t)esas2r_buffered_ioctl_size, 577 esas2r_buffered_ioctl, 578 esas2r_buffered_ioctl_addr); 579 esas2r_buffered_ioctl = NULL; 580 } 581 582 if (a->vda_buffer) { 583 dma_free_coherent(&a->pcid->dev, 584 (size_t)VDA_MAX_BUFFER_SIZE, 585 a->vda_buffer, 586 (dma_addr_t)a->ppvda_buffer); 587 a->vda_buffer = NULL; 588 } 589 if (a->fs_api_buffer) { 590 dma_free_coherent(&a->pcid->dev, 591 (size_t)a->fs_api_buffer_size, 592 a->fs_api_buffer, 593 (dma_addr_t)a->ppfs_api_buffer); 594 a->fs_api_buffer = NULL; 595 } 596 597 kfree(a->local_atto_ioctl); 598 a->local_atto_ioctl = NULL; 599 600 spin_lock_irqsave(&a->fw_event_lock, flags); 601 wq = a->fw_event_q; 602 a->fw_event_q = NULL; 603 spin_unlock_irqrestore(&a->fw_event_lock, flags); 604 if (wq) 605 destroy_workqueue(wq); 606 607 if (a->uncached) { 608 dma_free_coherent(&a->pcid->dev, 609 (size_t)a->uncached_size, 610 a->uncached, 611 (dma_addr_t)a->uncached_phys); 612 a->uncached = NULL; 613 esas2r_debug("uncached area freed"); 614 } 615 616 esas2r_log_dev(ESAS2R_LOG_INFO, 617 &(a->pcid->dev), 618 "pci_disable_device() called. msix_enabled: %d " 619 "msi_enabled: %d irq: %d pin: %d", 620 a->pcid->msix_enabled, 621 a->pcid->msi_enabled, 622 a->pcid->irq, 623 a->pcid->pin); 624 625 esas2r_log_dev(ESAS2R_LOG_INFO, 626 &(a->pcid->dev), 627 "before pci_disable_device() enable_cnt: %d", 628 a->pcid->enable_cnt.counter); 629 630 pci_disable_device(a->pcid); 631 esas2r_log_dev(ESAS2R_LOG_INFO, 632 &(a->pcid->dev), 633 "after pci_disable_device() enable_cnt: %d", 634 a->pcid->enable_cnt.counter); 635 636 esas2r_log_dev(ESAS2R_LOG_INFO, 637 &(a->pcid->dev), 638 "pci_set_drv_data(%p, NULL) called", 639 a->pcid); 640 641 pci_set_drvdata(a->pcid, NULL); 642 esas2r_adapters[i] = NULL; 643 644 if (test_bit(AF2_INIT_DONE, &a->flags2)) { 645 clear_bit(AF2_INIT_DONE, &a->flags2); 646 647 set_bit(AF_DEGRADED_MODE, &a->flags); 648 649 esas2r_log_dev(ESAS2R_LOG_INFO, 650 &(a->host->shost_gendev), 651 "scsi_remove_host() called"); 652 653 scsi_remove_host(a->host); 654 655 esas2r_log_dev(ESAS2R_LOG_INFO, 656 &(a->host->shost_gendev), 657 "scsi_host_put() called"); 658 659 scsi_host_put(a->host); 660 } 661 } 662 } 663 664 int esas2r_cleanup(struct Scsi_Host *host) 665 { 666 struct esas2r_adapter *a; 667 int index; 668 669 if (host == NULL) { 670 int i; 671 672 esas2r_debug("esas2r_cleanup everything"); 673 for (i = 0; i < MAX_ADAPTERS; i++) 674 esas2r_kill_adapter(i); 675 return -1; 676 } 677 678 esas2r_debug("esas2r_cleanup called for host %p", host); 679 a = (struct esas2r_adapter *)host->hostdata; 680 index = a->index; 681 esas2r_kill_adapter(index); 682 return index; 683 } 684 685 int esas2r_suspend(struct pci_dev *pdev, pm_message_t state) 686 { 687 struct Scsi_Host *host = pci_get_drvdata(pdev); 688 u32 device_state; 689 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; 690 691 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "suspending adapter()"); 692 if (!a) 693 return -ENODEV; 694 695 esas2r_adapter_power_down(a, 1); 696 device_state = pci_choose_state(pdev, state); 697 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 698 "pci_save_state() called"); 699 pci_save_state(pdev); 700 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 701 "pci_disable_device() called"); 702 pci_disable_device(pdev); 703 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 704 "pci_set_power_state() called"); 705 pci_set_power_state(pdev, device_state); 706 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "esas2r_suspend(): 0"); 707 return 0; 708 } 709 710 int esas2r_resume(struct pci_dev *pdev) 711 { 712 struct Scsi_Host *host = pci_get_drvdata(pdev); 713 struct esas2r_adapter *a = (struct esas2r_adapter *)host->hostdata; 714 int rez; 715 716 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), "resuming adapter()"); 717 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 718 "pci_set_power_state(PCI_D0) " 719 "called"); 720 pci_set_power_state(pdev, PCI_D0); 721 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 722 "pci_enable_wake(PCI_D0, 0) " 723 "called"); 724 pci_enable_wake(pdev, PCI_D0, 0); 725 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 726 "pci_restore_state() called"); 727 pci_restore_state(pdev); 728 esas2r_log_dev(ESAS2R_LOG_INFO, &(pdev->dev), 729 "pci_enable_device() called"); 730 rez = pci_enable_device(pdev); 731 pci_set_master(pdev); 732 733 if (!a) { 734 rez = -ENODEV; 735 goto error_exit; 736 } 737 738 if (esas2r_map_regions(a) != 0) { 739 esas2r_log(ESAS2R_LOG_CRIT, "could not re-map PCI regions!"); 740 rez = -ENOMEM; 741 goto error_exit; 742 } 743 744 /* Set up interupt mode */ 745 esas2r_setup_interrupts(a, a->intr_mode); 746 747 /* 748 * Disable chip interrupts to prevent spurious interrupts until we 749 * claim the IRQ. 750 */ 751 esas2r_disable_chip_interrupts(a); 752 if (!esas2r_power_up(a, true)) { 753 esas2r_debug("yikes, esas2r_power_up failed"); 754 rez = -ENOMEM; 755 goto error_exit; 756 } 757 758 esas2r_claim_interrupts(a); 759 760 if (test_bit(AF2_IRQ_CLAIMED, &a->flags2)) { 761 /* 762 * Now that system interrupt(s) are claimed, we can enable 763 * chip interrupts. 764 */ 765 esas2r_enable_chip_interrupts(a); 766 esas2r_kickoff_timer(a); 767 } else { 768 esas2r_debug("yikes, unable to claim IRQ"); 769 esas2r_log(ESAS2R_LOG_CRIT, "could not re-claim IRQ!"); 770 rez = -ENOMEM; 771 goto error_exit; 772 } 773 774 error_exit: 775 esas2r_log_dev(ESAS2R_LOG_CRIT, &(pdev->dev), "esas2r_resume(): %d", 776 rez); 777 return rez; 778 } 779 780 bool esas2r_set_degraded_mode(struct esas2r_adapter *a, char *error_str) 781 { 782 set_bit(AF_DEGRADED_MODE, &a->flags); 783 esas2r_log(ESAS2R_LOG_CRIT, 784 "setting adapter to degraded mode: %s\n", error_str); 785 return false; 786 } 787 788 u32 esas2r_get_uncached_size(struct esas2r_adapter *a) 789 { 790 return sizeof(struct esas2r_sas_nvram) 791 + ALIGN(ESAS2R_DISC_BUF_LEN, 8) 792 + ALIGN(sizeof(u32), 8) /* outbound list copy pointer */ 793 + 8 794 + (num_sg_lists * (u16)sgl_page_size) 795 + ALIGN((num_requests + num_ae_requests + 1 + 796 ESAS2R_LIST_EXTRA) * 797 sizeof(struct esas2r_inbound_list_source_entry), 798 8) 799 + ALIGN((num_requests + num_ae_requests + 1 + 800 ESAS2R_LIST_EXTRA) * 801 sizeof(struct atto_vda_ob_rsp), 8) 802 + 256; /* VDA request and buffer align */ 803 } 804 805 static void esas2r_init_pci_cfg_space(struct esas2r_adapter *a) 806 { 807 int pcie_cap_reg; 808 809 pcie_cap_reg = pci_find_capability(a->pcid, PCI_CAP_ID_EXP); 810 if (pcie_cap_reg) { 811 u16 devcontrol; 812 813 pci_read_config_word(a->pcid, pcie_cap_reg + PCI_EXP_DEVCTL, 814 &devcontrol); 815 816 if ((devcontrol & PCI_EXP_DEVCTL_READRQ) > 0x2000) { 817 esas2r_log(ESAS2R_LOG_INFO, 818 "max read request size > 512B"); 819 820 devcontrol &= ~PCI_EXP_DEVCTL_READRQ; 821 devcontrol |= 0x2000; 822 pci_write_config_word(a->pcid, 823 pcie_cap_reg + PCI_EXP_DEVCTL, 824 devcontrol); 825 } 826 } 827 } 828 829 /* 830 * Determine the organization of the uncached data area and 831 * finish initializing the adapter structure 832 */ 833 bool esas2r_init_adapter_struct(struct esas2r_adapter *a, 834 void **uncached_area) 835 { 836 u32 i; 837 u8 *high; 838 struct esas2r_inbound_list_source_entry *element; 839 struct esas2r_request *rq; 840 struct esas2r_mem_desc *sgl; 841 842 spin_lock_init(&a->sg_list_lock); 843 spin_lock_init(&a->mem_lock); 844 spin_lock_init(&a->queue_lock); 845 846 a->targetdb_end = &a->targetdb[ESAS2R_MAX_TARGETS]; 847 848 if (!alloc_vda_req(a, &a->general_req)) { 849 esas2r_hdebug( 850 "failed to allocate a VDA request for the general req!"); 851 return false; 852 } 853 854 /* allocate requests for asynchronous events */ 855 a->first_ae_req = 856 kzalloc(num_ae_requests * sizeof(struct esas2r_request), 857 GFP_KERNEL); 858 859 if (a->first_ae_req == NULL) { 860 esas2r_log(ESAS2R_LOG_CRIT, 861 "failed to allocate memory for asynchronous events"); 862 return false; 863 } 864 865 /* allocate the S/G list memory descriptors */ 866 a->sg_list_mds = kzalloc( 867 num_sg_lists * sizeof(struct esas2r_mem_desc), GFP_KERNEL); 868 869 if (a->sg_list_mds == NULL) { 870 esas2r_log(ESAS2R_LOG_CRIT, 871 "failed to allocate memory for s/g list descriptors"); 872 return false; 873 } 874 875 /* allocate the request table */ 876 a->req_table = 877 kzalloc((num_requests + num_ae_requests + 878 1) * sizeof(struct esas2r_request *), GFP_KERNEL); 879 880 if (a->req_table == NULL) { 881 esas2r_log(ESAS2R_LOG_CRIT, 882 "failed to allocate memory for the request table"); 883 return false; 884 } 885 886 /* initialize PCI configuration space */ 887 esas2r_init_pci_cfg_space(a); 888 889 /* 890 * the thunder_stream boards all have a serial flash part that has a 891 * different base address on the AHB bus. 892 */ 893 if ((a->pcid->subsystem_vendor == ATTO_VENDOR_ID) 894 && (a->pcid->subsystem_device & ATTO_SSDID_TBT)) 895 a->flags2 |= AF2_THUNDERBOLT; 896 897 if (test_bit(AF2_THUNDERBOLT, &a->flags2)) 898 a->flags2 |= AF2_SERIAL_FLASH; 899 900 if (a->pcid->subsystem_device == ATTO_TLSH_1068) 901 a->flags2 |= AF2_THUNDERLINK; 902 903 /* Uncached Area */ 904 high = (u8 *)*uncached_area; 905 906 /* initialize the scatter/gather table pages */ 907 908 for (i = 0, sgl = a->sg_list_mds; i < num_sg_lists; i++, sgl++) { 909 sgl->size = sgl_page_size; 910 911 list_add_tail(&sgl->next_desc, &a->free_sg_list_head); 912 913 if (!esas2r_initmem_alloc(a, sgl, ESAS2R_SGL_ALIGN)) { 914 /* Allow the driver to load if the minimum count met. */ 915 if (i < NUM_SGL_MIN) 916 return false; 917 break; 918 } 919 } 920 921 /* compute the size of the lists */ 922 a->list_size = num_requests + ESAS2R_LIST_EXTRA; 923 924 /* allocate the inbound list */ 925 a->inbound_list_md.size = a->list_size * 926 sizeof(struct 927 esas2r_inbound_list_source_entry); 928 929 if (!esas2r_initmem_alloc(a, &a->inbound_list_md, ESAS2R_LIST_ALIGN)) { 930 esas2r_hdebug("failed to allocate IB list"); 931 return false; 932 } 933 934 /* allocate the outbound list */ 935 a->outbound_list_md.size = a->list_size * 936 sizeof(struct atto_vda_ob_rsp); 937 938 if (!esas2r_initmem_alloc(a, &a->outbound_list_md, 939 ESAS2R_LIST_ALIGN)) { 940 esas2r_hdebug("failed to allocate IB list"); 941 return false; 942 } 943 944 /* allocate the NVRAM structure */ 945 a->nvram = (struct esas2r_sas_nvram *)high; 946 high += sizeof(struct esas2r_sas_nvram); 947 948 /* allocate the discovery buffer */ 949 a->disc_buffer = high; 950 high += ESAS2R_DISC_BUF_LEN; 951 high = PTR_ALIGN(high, 8); 952 953 /* allocate the outbound list copy pointer */ 954 a->outbound_copy = (u32 volatile *)high; 955 high += sizeof(u32); 956 957 if (!test_bit(AF_NVR_VALID, &a->flags)) 958 esas2r_nvram_set_defaults(a); 959 960 /* update the caller's uncached memory area pointer */ 961 *uncached_area = (void *)high; 962 963 /* initialize the allocated memory */ 964 if (test_bit(AF_FIRST_INIT, &a->flags)) { 965 memset(a->req_table, 0, 966 (num_requests + num_ae_requests + 967 1) * sizeof(struct esas2r_request *)); 968 969 esas2r_targ_db_initialize(a); 970 971 /* prime parts of the inbound list */ 972 element = 973 (struct esas2r_inbound_list_source_entry *)a-> 974 inbound_list_md. 975 virt_addr; 976 977 for (i = 0; i < a->list_size; i++) { 978 element->address = 0; 979 element->reserved = 0; 980 element->length = cpu_to_le32(HWILSE_INTERFACE_F0 981 | (sizeof(union 982 atto_vda_req) 983 / 984 sizeof(u32))); 985 element++; 986 } 987 988 /* init the AE requests */ 989 for (rq = a->first_ae_req, i = 0; i < num_ae_requests; rq++, 990 i++) { 991 INIT_LIST_HEAD(&rq->req_list); 992 if (!alloc_vda_req(a, rq)) { 993 esas2r_hdebug( 994 "failed to allocate a VDA request!"); 995 return false; 996 } 997 998 esas2r_rq_init_request(rq, a); 999 1000 /* override the completion function */ 1001 rq->comp_cb = esas2r_ae_complete; 1002 } 1003 } 1004 1005 return true; 1006 } 1007 1008 /* This code will verify that the chip is operational. */ 1009 bool esas2r_check_adapter(struct esas2r_adapter *a) 1010 { 1011 u32 starttime; 1012 u32 doorbell; 1013 u64 ppaddr; 1014 u32 dw; 1015 1016 /* 1017 * if the chip reset detected flag is set, we can bypass a bunch of 1018 * stuff. 1019 */ 1020 if (test_bit(AF_CHPRST_DETECTED, &a->flags)) 1021 goto skip_chip_reset; 1022 1023 /* 1024 * BEFORE WE DO ANYTHING, disable the chip interrupts! the boot driver 1025 * may have left them enabled or we may be recovering from a fault. 1026 */ 1027 esas2r_write_register_dword(a, MU_INT_MASK_OUT, ESAS2R_INT_DIS_MASK); 1028 esas2r_flush_register_dword(a, MU_INT_MASK_OUT); 1029 1030 /* 1031 * wait for the firmware to become ready by forcing an interrupt and 1032 * waiting for a response. 1033 */ 1034 starttime = jiffies_to_msecs(jiffies); 1035 1036 while (true) { 1037 esas2r_force_interrupt(a); 1038 doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); 1039 if (doorbell == 0xFFFFFFFF) { 1040 /* 1041 * Give the firmware up to two seconds to enable 1042 * register access after a reset. 1043 */ 1044 if ((jiffies_to_msecs(jiffies) - starttime) > 2000) 1045 return esas2r_set_degraded_mode(a, 1046 "unable to access registers"); 1047 } else if (doorbell & DRBL_FORCE_INT) { 1048 u32 ver = (doorbell & DRBL_FW_VER_MSK); 1049 1050 /* 1051 * This driver supports version 0 and version 1 of 1052 * the API 1053 */ 1054 esas2r_write_register_dword(a, MU_DOORBELL_OUT, 1055 doorbell); 1056 1057 if (ver == DRBL_FW_VER_0) { 1058 set_bit(AF_LEGACY_SGE_MODE, &a->flags); 1059 1060 a->max_vdareq_size = 128; 1061 a->build_sgl = esas2r_build_sg_list_sge; 1062 } else if (ver == DRBL_FW_VER_1) { 1063 clear_bit(AF_LEGACY_SGE_MODE, &a->flags); 1064 1065 a->max_vdareq_size = 1024; 1066 a->build_sgl = esas2r_build_sg_list_prd; 1067 } else { 1068 return esas2r_set_degraded_mode(a, 1069 "unknown firmware version"); 1070 } 1071 break; 1072 } 1073 1074 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1075 1076 if ((jiffies_to_msecs(jiffies) - starttime) > 180000) { 1077 esas2r_hdebug("FW ready TMO"); 1078 esas2r_bugon(); 1079 1080 return esas2r_set_degraded_mode(a, 1081 "firmware start has timed out"); 1082 } 1083 } 1084 1085 /* purge any asynchronous events since we will repost them later */ 1086 esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_DOWN); 1087 starttime = jiffies_to_msecs(jiffies); 1088 1089 while (true) { 1090 doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); 1091 if (doorbell & DRBL_MSG_IFC_DOWN) { 1092 esas2r_write_register_dword(a, MU_DOORBELL_OUT, 1093 doorbell); 1094 break; 1095 } 1096 1097 schedule_timeout_interruptible(msecs_to_jiffies(50)); 1098 1099 if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { 1100 esas2r_hdebug("timeout waiting for interface down"); 1101 break; 1102 } 1103 } 1104 skip_chip_reset: 1105 /* 1106 * first things first, before we go changing any of these registers 1107 * disable the communication lists. 1108 */ 1109 dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG); 1110 dw &= ~MU_ILC_ENABLE; 1111 esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw); 1112 dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG); 1113 dw &= ~MU_OLC_ENABLE; 1114 esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw); 1115 1116 /* configure the communication list addresses */ 1117 ppaddr = a->inbound_list_md.phys_addr; 1118 esas2r_write_register_dword(a, MU_IN_LIST_ADDR_LO, 1119 lower_32_bits(ppaddr)); 1120 esas2r_write_register_dword(a, MU_IN_LIST_ADDR_HI, 1121 upper_32_bits(ppaddr)); 1122 ppaddr = a->outbound_list_md.phys_addr; 1123 esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_LO, 1124 lower_32_bits(ppaddr)); 1125 esas2r_write_register_dword(a, MU_OUT_LIST_ADDR_HI, 1126 upper_32_bits(ppaddr)); 1127 ppaddr = a->uncached_phys + 1128 ((u8 *)a->outbound_copy - a->uncached); 1129 esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_LO, 1130 lower_32_bits(ppaddr)); 1131 esas2r_write_register_dword(a, MU_OUT_LIST_COPY_PTR_HI, 1132 upper_32_bits(ppaddr)); 1133 1134 /* reset the read and write pointers */ 1135 *a->outbound_copy = 1136 a->last_write = 1137 a->last_read = a->list_size - 1; 1138 set_bit(AF_COMM_LIST_TOGGLE, &a->flags); 1139 esas2r_write_register_dword(a, MU_IN_LIST_WRITE, MU_ILW_TOGGLE | 1140 a->last_write); 1141 esas2r_write_register_dword(a, MU_OUT_LIST_COPY, MU_OLC_TOGGLE | 1142 a->last_write); 1143 esas2r_write_register_dword(a, MU_IN_LIST_READ, MU_ILR_TOGGLE | 1144 a->last_write); 1145 esas2r_write_register_dword(a, MU_OUT_LIST_WRITE, 1146 MU_OLW_TOGGLE | a->last_write); 1147 1148 /* configure the interface select fields */ 1149 dw = esas2r_read_register_dword(a, MU_IN_LIST_IFC_CONFIG); 1150 dw &= ~(MU_ILIC_LIST | MU_ILIC_DEST); 1151 esas2r_write_register_dword(a, MU_IN_LIST_IFC_CONFIG, 1152 (dw | MU_ILIC_LIST_F0 | MU_ILIC_DEST_DDR)); 1153 dw = esas2r_read_register_dword(a, MU_OUT_LIST_IFC_CONFIG); 1154 dw &= ~(MU_OLIC_LIST | MU_OLIC_SOURCE); 1155 esas2r_write_register_dword(a, MU_OUT_LIST_IFC_CONFIG, 1156 (dw | MU_OLIC_LIST_F0 | 1157 MU_OLIC_SOURCE_DDR)); 1158 1159 /* finish configuring the communication lists */ 1160 dw = esas2r_read_register_dword(a, MU_IN_LIST_CONFIG); 1161 dw &= ~(MU_ILC_ENTRY_MASK | MU_ILC_NUMBER_MASK); 1162 dw |= MU_ILC_ENTRY_4_DW | MU_ILC_DYNAMIC_SRC 1163 | (a->list_size << MU_ILC_NUMBER_SHIFT); 1164 esas2r_write_register_dword(a, MU_IN_LIST_CONFIG, dw); 1165 dw = esas2r_read_register_dword(a, MU_OUT_LIST_CONFIG); 1166 dw &= ~(MU_OLC_ENTRY_MASK | MU_OLC_NUMBER_MASK); 1167 dw |= MU_OLC_ENTRY_4_DW | (a->list_size << MU_OLC_NUMBER_SHIFT); 1168 esas2r_write_register_dword(a, MU_OUT_LIST_CONFIG, dw); 1169 1170 /* 1171 * notify the firmware that we're done setting up the communication 1172 * list registers. wait here until the firmware is done configuring 1173 * its lists. it will signal that it is done by enabling the lists. 1174 */ 1175 esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_MSG_IFC_INIT); 1176 starttime = jiffies_to_msecs(jiffies); 1177 1178 while (true) { 1179 doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); 1180 if (doorbell & DRBL_MSG_IFC_INIT) { 1181 esas2r_write_register_dword(a, MU_DOORBELL_OUT, 1182 doorbell); 1183 break; 1184 } 1185 1186 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1187 1188 if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { 1189 esas2r_hdebug( 1190 "timeout waiting for communication list init"); 1191 esas2r_bugon(); 1192 return esas2r_set_degraded_mode(a, 1193 "timeout waiting for communication list init"); 1194 } 1195 } 1196 1197 /* 1198 * flag whether the firmware supports the power down doorbell. we 1199 * determine this by reading the inbound doorbell enable mask. 1200 */ 1201 doorbell = esas2r_read_register_dword(a, MU_DOORBELL_IN_ENB); 1202 if (doorbell & DRBL_POWER_DOWN) 1203 set_bit(AF2_VDA_POWER_DOWN, &a->flags2); 1204 else 1205 clear_bit(AF2_VDA_POWER_DOWN, &a->flags2); 1206 1207 /* 1208 * enable assertion of outbound queue and doorbell interrupts in the 1209 * main interrupt cause register. 1210 */ 1211 esas2r_write_register_dword(a, MU_OUT_LIST_INT_MASK, MU_OLIS_MASK); 1212 esas2r_write_register_dword(a, MU_DOORBELL_OUT_ENB, DRBL_ENB_MASK); 1213 return true; 1214 } 1215 1216 /* Process the initialization message just completed and format the next one. */ 1217 static bool esas2r_format_init_msg(struct esas2r_adapter *a, 1218 struct esas2r_request *rq) 1219 { 1220 u32 msg = a->init_msg; 1221 struct atto_vda_cfg_init *ci; 1222 1223 a->init_msg = 0; 1224 1225 switch (msg) { 1226 case ESAS2R_INIT_MSG_START: 1227 case ESAS2R_INIT_MSG_REINIT: 1228 { 1229 struct timeval now; 1230 do_gettimeofday(&now); 1231 esas2r_hdebug("CFG init"); 1232 esas2r_build_cfg_req(a, 1233 rq, 1234 VDA_CFG_INIT, 1235 0, 1236 NULL); 1237 ci = (struct atto_vda_cfg_init *)&rq->vrq->cfg.data.init; 1238 ci->sgl_page_size = cpu_to_le32(sgl_page_size); 1239 ci->epoch_time = cpu_to_le32(now.tv_sec); 1240 rq->flags |= RF_FAILURE_OK; 1241 a->init_msg = ESAS2R_INIT_MSG_INIT; 1242 break; 1243 } 1244 1245 case ESAS2R_INIT_MSG_INIT: 1246 if (rq->req_stat == RS_SUCCESS) { 1247 u32 major; 1248 u32 minor; 1249 u16 fw_release; 1250 1251 a->fw_version = le16_to_cpu( 1252 rq->func_rsp.cfg_rsp.vda_version); 1253 a->fw_build = rq->func_rsp.cfg_rsp.fw_build; 1254 fw_release = le16_to_cpu( 1255 rq->func_rsp.cfg_rsp.fw_release); 1256 major = LOBYTE(fw_release); 1257 minor = HIBYTE(fw_release); 1258 a->fw_version += (major << 16) + (minor << 24); 1259 } else { 1260 esas2r_hdebug("FAILED"); 1261 } 1262 1263 /* 1264 * the 2.71 and earlier releases of R6xx firmware did not error 1265 * unsupported config requests correctly. 1266 */ 1267 1268 if ((test_bit(AF2_THUNDERBOLT, &a->flags2)) 1269 || (be32_to_cpu(a->fw_version) > 0x00524702)) { 1270 esas2r_hdebug("CFG get init"); 1271 esas2r_build_cfg_req(a, 1272 rq, 1273 VDA_CFG_GET_INIT2, 1274 sizeof(struct atto_vda_cfg_init), 1275 NULL); 1276 1277 rq->vrq->cfg.sg_list_offset = offsetof( 1278 struct atto_vda_cfg_req, 1279 data.sge); 1280 rq->vrq->cfg.data.prde.ctl_len = 1281 cpu_to_le32(sizeof(struct atto_vda_cfg_init)); 1282 rq->vrq->cfg.data.prde.address = cpu_to_le64( 1283 rq->vrq_md->phys_addr + 1284 sizeof(union atto_vda_req)); 1285 rq->flags |= RF_FAILURE_OK; 1286 a->init_msg = ESAS2R_INIT_MSG_GET_INIT; 1287 break; 1288 } 1289 1290 case ESAS2R_INIT_MSG_GET_INIT: 1291 if (msg == ESAS2R_INIT_MSG_GET_INIT) { 1292 ci = (struct atto_vda_cfg_init *)rq->data_buf; 1293 if (rq->req_stat == RS_SUCCESS) { 1294 a->num_targets_backend = 1295 le32_to_cpu(ci->num_targets_backend); 1296 a->ioctl_tunnel = 1297 le32_to_cpu(ci->ioctl_tunnel); 1298 } else { 1299 esas2r_hdebug("FAILED"); 1300 } 1301 } 1302 /* fall through */ 1303 1304 default: 1305 rq->req_stat = RS_SUCCESS; 1306 return false; 1307 } 1308 return true; 1309 } 1310 1311 /* 1312 * Perform initialization messages via the request queue. Messages are 1313 * performed with interrupts disabled. 1314 */ 1315 bool esas2r_init_msgs(struct esas2r_adapter *a) 1316 { 1317 bool success = true; 1318 struct esas2r_request *rq = &a->general_req; 1319 1320 esas2r_rq_init_request(rq, a); 1321 rq->comp_cb = esas2r_dummy_complete; 1322 1323 if (a->init_msg == 0) 1324 a->init_msg = ESAS2R_INIT_MSG_REINIT; 1325 1326 while (a->init_msg) { 1327 if (esas2r_format_init_msg(a, rq)) { 1328 unsigned long flags; 1329 while (true) { 1330 spin_lock_irqsave(&a->queue_lock, flags); 1331 esas2r_start_vda_request(a, rq); 1332 spin_unlock_irqrestore(&a->queue_lock, flags); 1333 esas2r_wait_request(a, rq); 1334 if (rq->req_stat != RS_PENDING) 1335 break; 1336 } 1337 } 1338 1339 if (rq->req_stat == RS_SUCCESS 1340 || ((rq->flags & RF_FAILURE_OK) 1341 && rq->req_stat != RS_TIMEOUT)) 1342 continue; 1343 1344 esas2r_log(ESAS2R_LOG_CRIT, "init message %x failed (%x, %x)", 1345 a->init_msg, rq->req_stat, rq->flags); 1346 a->init_msg = ESAS2R_INIT_MSG_START; 1347 success = false; 1348 break; 1349 } 1350 1351 esas2r_rq_destroy_request(rq, a); 1352 return success; 1353 } 1354 1355 /* Initialize the adapter chip */ 1356 bool esas2r_init_adapter_hw(struct esas2r_adapter *a, bool init_poll) 1357 { 1358 bool rslt = false; 1359 struct esas2r_request *rq; 1360 u32 i; 1361 1362 if (test_bit(AF_DEGRADED_MODE, &a->flags)) 1363 goto exit; 1364 1365 if (!test_bit(AF_NVR_VALID, &a->flags)) { 1366 if (!esas2r_nvram_read_direct(a)) 1367 esas2r_log(ESAS2R_LOG_WARN, 1368 "invalid/missing NVRAM parameters"); 1369 } 1370 1371 if (!esas2r_init_msgs(a)) { 1372 esas2r_set_degraded_mode(a, "init messages failed"); 1373 goto exit; 1374 } 1375 1376 /* The firmware is ready. */ 1377 clear_bit(AF_DEGRADED_MODE, &a->flags); 1378 clear_bit(AF_CHPRST_PENDING, &a->flags); 1379 1380 /* Post all the async event requests */ 1381 for (i = 0, rq = a->first_ae_req; i < num_ae_requests; i++, rq++) 1382 esas2r_start_ae_request(a, rq); 1383 1384 if (!a->flash_rev[0]) 1385 esas2r_read_flash_rev(a); 1386 1387 if (!a->image_type[0]) 1388 esas2r_read_image_type(a); 1389 1390 if (a->fw_version == 0) 1391 a->fw_rev[0] = 0; 1392 else 1393 sprintf(a->fw_rev, "%1d.%02d", 1394 (int)LOBYTE(HIWORD(a->fw_version)), 1395 (int)HIBYTE(HIWORD(a->fw_version))); 1396 1397 esas2r_hdebug("firmware revision: %s", a->fw_rev); 1398 1399 if (test_bit(AF_CHPRST_DETECTED, &a->flags) 1400 && (test_bit(AF_FIRST_INIT, &a->flags))) { 1401 esas2r_enable_chip_interrupts(a); 1402 return true; 1403 } 1404 1405 /* initialize discovery */ 1406 esas2r_disc_initialize(a); 1407 1408 /* 1409 * wait for the device wait time to expire here if requested. this is 1410 * usually requested during initial driver load and possibly when 1411 * resuming from a low power state. deferred device waiting will use 1412 * interrupts. chip reset recovery always defers device waiting to 1413 * avoid being in a TASKLET too long. 1414 */ 1415 if (init_poll) { 1416 u32 currtime = a->disc_start_time; 1417 u32 nexttick = 100; 1418 u32 deltatime; 1419 1420 /* 1421 * Block Tasklets from getting scheduled and indicate this is 1422 * polled discovery. 1423 */ 1424 set_bit(AF_TASKLET_SCHEDULED, &a->flags); 1425 set_bit(AF_DISC_POLLED, &a->flags); 1426 1427 /* 1428 * Temporarily bring the disable count to zero to enable 1429 * deferred processing. Note that the count is already zero 1430 * after the first initialization. 1431 */ 1432 if (test_bit(AF_FIRST_INIT, &a->flags)) 1433 atomic_dec(&a->disable_cnt); 1434 1435 while (test_bit(AF_DISC_PENDING, &a->flags)) { 1436 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1437 1438 /* 1439 * Determine the need for a timer tick based on the 1440 * delta time between this and the last iteration of 1441 * this loop. We don't use the absolute time because 1442 * then we would have to worry about when nexttick 1443 * wraps and currtime hasn't yet. 1444 */ 1445 deltatime = jiffies_to_msecs(jiffies) - currtime; 1446 currtime += deltatime; 1447 1448 /* 1449 * Process any waiting discovery as long as the chip is 1450 * up. If a chip reset happens during initial polling, 1451 * we have to make sure the timer tick processes the 1452 * doorbell indicating the firmware is ready. 1453 */ 1454 if (!test_bit(AF_CHPRST_PENDING, &a->flags)) 1455 esas2r_disc_check_for_work(a); 1456 1457 /* Simulate a timer tick. */ 1458 if (nexttick <= deltatime) { 1459 1460 /* Time for a timer tick */ 1461 nexttick += 100; 1462 esas2r_timer_tick(a); 1463 } 1464 1465 if (nexttick > deltatime) 1466 nexttick -= deltatime; 1467 1468 /* Do any deferred processing */ 1469 if (esas2r_is_tasklet_pending(a)) 1470 esas2r_do_tasklet_tasks(a); 1471 1472 } 1473 1474 if (test_bit(AF_FIRST_INIT, &a->flags)) 1475 atomic_inc(&a->disable_cnt); 1476 1477 clear_bit(AF_DISC_POLLED, &a->flags); 1478 clear_bit(AF_TASKLET_SCHEDULED, &a->flags); 1479 } 1480 1481 1482 esas2r_targ_db_report_changes(a); 1483 1484 /* 1485 * For cases where (a) the initialization messages processing may 1486 * handle an interrupt for a port event and a discovery is waiting, but 1487 * we are not waiting for devices, or (b) the device wait time has been 1488 * exhausted but there is still discovery pending, start any leftover 1489 * discovery in interrupt driven mode. 1490 */ 1491 esas2r_disc_start_waiting(a); 1492 1493 /* Enable chip interrupts */ 1494 a->int_mask = ESAS2R_INT_STS_MASK; 1495 esas2r_enable_chip_interrupts(a); 1496 esas2r_enable_heartbeat(a); 1497 rslt = true; 1498 1499 exit: 1500 /* 1501 * Regardless of whether initialization was successful, certain things 1502 * need to get done before we exit. 1503 */ 1504 1505 if (test_bit(AF_CHPRST_DETECTED, &a->flags) && 1506 test_bit(AF_FIRST_INIT, &a->flags)) { 1507 /* 1508 * Reinitialization was performed during the first 1509 * initialization. Only clear the chip reset flag so the 1510 * original device polling is not cancelled. 1511 */ 1512 if (!rslt) 1513 clear_bit(AF_CHPRST_PENDING, &a->flags); 1514 } else { 1515 /* First initialization or a subsequent re-init is complete. */ 1516 if (!rslt) { 1517 clear_bit(AF_CHPRST_PENDING, &a->flags); 1518 clear_bit(AF_DISC_PENDING, &a->flags); 1519 } 1520 1521 1522 /* Enable deferred processing after the first initialization. */ 1523 if (test_bit(AF_FIRST_INIT, &a->flags)) { 1524 clear_bit(AF_FIRST_INIT, &a->flags); 1525 1526 if (atomic_dec_return(&a->disable_cnt) == 0) 1527 esas2r_do_deferred_processes(a); 1528 } 1529 } 1530 1531 return rslt; 1532 } 1533 1534 void esas2r_reset_adapter(struct esas2r_adapter *a) 1535 { 1536 set_bit(AF_OS_RESET, &a->flags); 1537 esas2r_local_reset_adapter(a); 1538 esas2r_schedule_tasklet(a); 1539 } 1540 1541 void esas2r_reset_chip(struct esas2r_adapter *a) 1542 { 1543 if (!esas2r_is_adapter_present(a)) 1544 return; 1545 1546 /* 1547 * Before we reset the chip, save off the VDA core dump. The VDA core 1548 * dump is located in the upper 512KB of the onchip SRAM. Make sure 1549 * to not overwrite a previous crash that was saved. 1550 */ 1551 if (test_bit(AF2_COREDUMP_AVAIL, &a->flags2) && 1552 !test_bit(AF2_COREDUMP_SAVED, &a->flags2)) { 1553 esas2r_read_mem_block(a, 1554 a->fw_coredump_buff, 1555 MW_DATA_ADDR_SRAM + 0x80000, 1556 ESAS2R_FWCOREDUMP_SZ); 1557 1558 set_bit(AF2_COREDUMP_SAVED, &a->flags2); 1559 } 1560 1561 clear_bit(AF2_COREDUMP_AVAIL, &a->flags2); 1562 1563 /* Reset the chip */ 1564 if (a->pcid->revision == MVR_FREY_B2) 1565 esas2r_write_register_dword(a, MU_CTL_STATUS_IN_B2, 1566 MU_CTL_IN_FULL_RST2); 1567 else 1568 esas2r_write_register_dword(a, MU_CTL_STATUS_IN, 1569 MU_CTL_IN_FULL_RST); 1570 1571 1572 /* Stall a little while to let the reset condition clear */ 1573 mdelay(10); 1574 } 1575 1576 static void esas2r_power_down_notify_firmware(struct esas2r_adapter *a) 1577 { 1578 u32 starttime; 1579 u32 doorbell; 1580 1581 esas2r_write_register_dword(a, MU_DOORBELL_IN, DRBL_POWER_DOWN); 1582 starttime = jiffies_to_msecs(jiffies); 1583 1584 while (true) { 1585 doorbell = esas2r_read_register_dword(a, MU_DOORBELL_OUT); 1586 if (doorbell & DRBL_POWER_DOWN) { 1587 esas2r_write_register_dword(a, MU_DOORBELL_OUT, 1588 doorbell); 1589 break; 1590 } 1591 1592 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1593 1594 if ((jiffies_to_msecs(jiffies) - starttime) > 30000) { 1595 esas2r_hdebug("Timeout waiting for power down"); 1596 break; 1597 } 1598 } 1599 } 1600 1601 /* 1602 * Perform power management processing including managing device states, adapter 1603 * states, interrupts, and I/O. 1604 */ 1605 void esas2r_power_down(struct esas2r_adapter *a) 1606 { 1607 set_bit(AF_POWER_MGT, &a->flags); 1608 set_bit(AF_POWER_DOWN, &a->flags); 1609 1610 if (!test_bit(AF_DEGRADED_MODE, &a->flags)) { 1611 u32 starttime; 1612 u32 doorbell; 1613 1614 /* 1615 * We are currently running OK and will be reinitializing later. 1616 * increment the disable count to coordinate with 1617 * esas2r_init_adapter. We don't have to do this in degraded 1618 * mode since we never enabled interrupts in the first place. 1619 */ 1620 esas2r_disable_chip_interrupts(a); 1621 esas2r_disable_heartbeat(a); 1622 1623 /* wait for any VDA activity to clear before continuing */ 1624 esas2r_write_register_dword(a, MU_DOORBELL_IN, 1625 DRBL_MSG_IFC_DOWN); 1626 starttime = jiffies_to_msecs(jiffies); 1627 1628 while (true) { 1629 doorbell = 1630 esas2r_read_register_dword(a, MU_DOORBELL_OUT); 1631 if (doorbell & DRBL_MSG_IFC_DOWN) { 1632 esas2r_write_register_dword(a, MU_DOORBELL_OUT, 1633 doorbell); 1634 break; 1635 } 1636 1637 schedule_timeout_interruptible(msecs_to_jiffies(100)); 1638 1639 if ((jiffies_to_msecs(jiffies) - starttime) > 3000) { 1640 esas2r_hdebug( 1641 "timeout waiting for interface down"); 1642 break; 1643 } 1644 } 1645 1646 /* 1647 * For versions of firmware that support it tell them the driver 1648 * is powering down. 1649 */ 1650 if (test_bit(AF2_VDA_POWER_DOWN, &a->flags2)) 1651 esas2r_power_down_notify_firmware(a); 1652 } 1653 1654 /* Suspend I/O processing. */ 1655 set_bit(AF_OS_RESET, &a->flags); 1656 set_bit(AF_DISC_PENDING, &a->flags); 1657 set_bit(AF_CHPRST_PENDING, &a->flags); 1658 1659 esas2r_process_adapter_reset(a); 1660 1661 /* Remove devices now that I/O is cleaned up. */ 1662 a->prev_dev_cnt = esas2r_targ_db_get_tgt_cnt(a); 1663 esas2r_targ_db_remove_all(a, false); 1664 } 1665 1666 /* 1667 * Perform power management processing including managing device states, adapter 1668 * states, interrupts, and I/O. 1669 */ 1670 bool esas2r_power_up(struct esas2r_adapter *a, bool init_poll) 1671 { 1672 bool ret; 1673 1674 clear_bit(AF_POWER_DOWN, &a->flags); 1675 esas2r_init_pci_cfg_space(a); 1676 set_bit(AF_FIRST_INIT, &a->flags); 1677 atomic_inc(&a->disable_cnt); 1678 1679 /* reinitialize the adapter */ 1680 ret = esas2r_check_adapter(a); 1681 if (!esas2r_init_adapter_hw(a, init_poll)) 1682 ret = false; 1683 1684 /* send the reset asynchronous event */ 1685 esas2r_send_reset_ae(a, true); 1686 1687 /* clear this flag after initialization. */ 1688 clear_bit(AF_POWER_MGT, &a->flags); 1689 return ret; 1690 } 1691 1692 bool esas2r_is_adapter_present(struct esas2r_adapter *a) 1693 { 1694 if (test_bit(AF_NOT_PRESENT, &a->flags)) 1695 return false; 1696 1697 if (esas2r_read_register_dword(a, MU_DOORBELL_OUT) == 0xFFFFFFFF) { 1698 set_bit(AF_NOT_PRESENT, &a->flags); 1699 1700 return false; 1701 } 1702 return true; 1703 } 1704 1705 const char *esas2r_get_model_name(struct esas2r_adapter *a) 1706 { 1707 switch (a->pcid->subsystem_device) { 1708 case ATTO_ESAS_R680: 1709 return "ATTO ExpressSAS R680"; 1710 1711 case ATTO_ESAS_R608: 1712 return "ATTO ExpressSAS R608"; 1713 1714 case ATTO_ESAS_R60F: 1715 return "ATTO ExpressSAS R60F"; 1716 1717 case ATTO_ESAS_R6F0: 1718 return "ATTO ExpressSAS R6F0"; 1719 1720 case ATTO_ESAS_R644: 1721 return "ATTO ExpressSAS R644"; 1722 1723 case ATTO_ESAS_R648: 1724 return "ATTO ExpressSAS R648"; 1725 1726 case ATTO_TSSC_3808: 1727 return "ATTO ThunderStream SC 3808D"; 1728 1729 case ATTO_TSSC_3808E: 1730 return "ATTO ThunderStream SC 3808E"; 1731 1732 case ATTO_TLSH_1068: 1733 return "ATTO ThunderLink SH 1068"; 1734 } 1735 1736 return "ATTO SAS Controller"; 1737 } 1738 1739 const char *esas2r_get_model_name_short(struct esas2r_adapter *a) 1740 { 1741 switch (a->pcid->subsystem_device) { 1742 case ATTO_ESAS_R680: 1743 return "R680"; 1744 1745 case ATTO_ESAS_R608: 1746 return "R608"; 1747 1748 case ATTO_ESAS_R60F: 1749 return "R60F"; 1750 1751 case ATTO_ESAS_R6F0: 1752 return "R6F0"; 1753 1754 case ATTO_ESAS_R644: 1755 return "R644"; 1756 1757 case ATTO_ESAS_R648: 1758 return "R648"; 1759 1760 case ATTO_TSSC_3808: 1761 return "SC 3808D"; 1762 1763 case ATTO_TSSC_3808E: 1764 return "SC 3808E"; 1765 1766 case ATTO_TLSH_1068: 1767 return "SH 1068"; 1768 } 1769 1770 return "unknown"; 1771 } 1772