1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Adaptec AAC series RAID controller driver 4 * (c) Copyright 2001 Red Hat Inc. 5 * 6 * based on the old aacraid driver that is.. 7 * Adaptec aacraid device driver for Linux. 8 * 9 * Copyright (c) 2000-2010 Adaptec, Inc. 10 * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 11 * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) 12 * 13 * Module Name: 14 * comminit.c 15 * 16 * Abstract: This supports the initialization of the host adapter commuication interface. 17 * This is a platform dependent module for the pci cyclone board. 18 */ 19 20 #include <linux/kernel.h> 21 #include <linux/init.h> 22 #include <linux/types.h> 23 #include <linux/pci.h> 24 #include <linux/spinlock.h> 25 #include <linux/slab.h> 26 #include <linux/blkdev.h> 27 #include <linux/delay.h> 28 #include <linux/completion.h> 29 #include <linux/mm.h> 30 #include <scsi/scsi_host.h> 31 #include <scsi/scsi_device.h> 32 #include <scsi/scsi_cmnd.h> 33 34 #include "aacraid.h" 35 36 struct aac_common aac_config = { 37 .irq_mod = 1 38 }; 39 40 static inline int aac_is_msix_mode(struct aac_dev *dev) 41 { 42 u32 status = 0; 43 44 if (aac_is_src(dev)) 45 status = src_readl(dev, MUnit.OMR); 46 return (status & AAC_INT_MODE_MSIX); 47 } 48 49 static inline void aac_change_to_intx(struct aac_dev *dev) 50 { 51 aac_src_access_devreg(dev, AAC_DISABLE_MSIX); 52 aac_src_access_devreg(dev, AAC_ENABLE_INTX); 53 } 54 55 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 56 { 57 unsigned char *base; 58 unsigned long size, align; 59 const unsigned long fibsize = dev->max_fib_size; 60 const unsigned long printfbufsiz = 256; 61 unsigned long host_rrq_size, aac_init_size; 62 union aac_init *init; 63 dma_addr_t phys; 64 unsigned long aac_max_hostphysmempages; 65 66 if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) || 67 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) || 68 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && 69 !dev->sa_firmware)) { 70 host_rrq_size = 71 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) 72 * sizeof(u32); 73 aac_init_size = sizeof(union aac_init); 74 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && 75 dev->sa_firmware) { 76 host_rrq_size = (dev->scsi_host_ptr->can_queue 77 + AAC_NUM_MGT_FIB) * sizeof(u32) * AAC_MAX_MSIX; 78 aac_init_size = sizeof(union aac_init) + 79 (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq); 80 } else { 81 host_rrq_size = 0; 82 aac_init_size = sizeof(union aac_init); 83 } 84 size = fibsize + aac_init_size + commsize + commalign + 85 printfbufsiz + host_rrq_size; 86 87 base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL); 88 if (base == NULL) { 89 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 90 return 0; 91 } 92 93 dev->comm_addr = (void *)base; 94 dev->comm_phys = phys; 95 dev->comm_size = size; 96 97 if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) || 98 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) || 99 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) { 100 dev->host_rrq = (u32 *)(base + fibsize); 101 dev->host_rrq_pa = phys + fibsize; 102 memset(dev->host_rrq, 0, host_rrq_size); 103 } 104 105 dev->init = (union aac_init *)(base + fibsize + host_rrq_size); 106 dev->init_pa = phys + fibsize + host_rrq_size; 107 108 init = dev->init; 109 110 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 111 int i; 112 u64 addr; 113 114 init->r8.init_struct_revision = 115 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8); 116 init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 117 INITFLAGS_DRIVER_USES_UTC_TIME | 118 INITFLAGS_DRIVER_SUPPORTS_PM); 119 init->r8.init_flags |= 120 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE); 121 init->r8.rr_queue_count = cpu_to_le32(dev->max_msix); 122 init->r8.max_io_size = 123 cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 124 init->r8.max_num_aif = init->r8.reserved1 = 125 init->r8.reserved2 = 0; 126 127 for (i = 0; i < dev->max_msix; i++) { 128 addr = (u64)dev->host_rrq_pa + dev->vector_cap * i * 129 sizeof(u32); 130 init->r8.rrq[i].host_addr_high = cpu_to_le32( 131 upper_32_bits(addr)); 132 init->r8.rrq[i].host_addr_low = cpu_to_le32( 133 lower_32_bits(addr)); 134 init->r8.rrq[i].msix_id = i; 135 init->r8.rrq[i].element_count = cpu_to_le16( 136 (u16)dev->vector_cap); 137 init->r8.rrq[i].comp_thresh = 138 init->r8.rrq[i].unused = 0; 139 } 140 141 pr_warn("aacraid: Comm Interface type3 enabled\n"); 142 } else { 143 init->r7.init_struct_revision = 144 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 145 if (dev->max_fib_size != sizeof(struct hw_fib)) 146 init->r7.init_struct_revision = 147 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 148 init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION); 149 init->r7.fsrev = cpu_to_le32(dev->fsrev); 150 151 /* 152 * Adapter Fibs are the first thing allocated so that they 153 * start page aligned 154 */ 155 dev->aif_base_va = (struct hw_fib *)base; 156 157 init->r7.adapter_fibs_virtual_address = 0; 158 init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys); 159 init->r7.adapter_fibs_size = cpu_to_le32(fibsize); 160 init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib)); 161 162 /* 163 * number of 4k pages of host physical memory. The aacraid fw 164 * needs this number to be less than 4gb worth of pages. New 165 * firmware doesn't have any issues with the mapping system, but 166 * older Firmware did, and had *troubles* dealing with the math 167 * overloading past 32 bits, thus we must limit this field. 168 */ 169 aac_max_hostphysmempages = 170 dma_get_required_mask(&dev->pdev->dev) >> 12; 171 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 172 init->r7.host_phys_mem_pages = 173 cpu_to_le32(aac_max_hostphysmempages); 174 else 175 init->r7.host_phys_mem_pages = 176 cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 177 178 init->r7.init_flags = 179 cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 180 INITFLAGS_DRIVER_SUPPORTS_PM); 181 init->r7.max_io_commands = 182 cpu_to_le32(dev->scsi_host_ptr->can_queue + 183 AAC_NUM_MGT_FIB); 184 init->r7.max_io_size = 185 cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 186 init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size); 187 init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif); 188 189 if (dev->comm_interface == AAC_COMM_MESSAGE) { 190 init->r7.init_flags |= 191 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 192 pr_warn("aacraid: Comm Interface enabled\n"); 193 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 194 init->r7.init_struct_revision = 195 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6); 196 init->r7.init_flags |= 197 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 198 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | 199 INITFLAGS_FAST_JBOD_SUPPORTED); 200 init->r7.host_rrq_addr_high = 201 cpu_to_le32(upper_32_bits(dev->host_rrq_pa)); 202 init->r7.host_rrq_addr_low = 203 cpu_to_le32(lower_32_bits(dev->host_rrq_pa)); 204 pr_warn("aacraid: Comm Interface type1 enabled\n"); 205 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 206 init->r7.init_struct_revision = 207 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7); 208 init->r7.init_flags |= 209 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 210 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | 211 INITFLAGS_FAST_JBOD_SUPPORTED); 212 init->r7.host_rrq_addr_high = 213 cpu_to_le32(upper_32_bits(dev->host_rrq_pa)); 214 init->r7.host_rrq_addr_low = 215 cpu_to_le32(lower_32_bits(dev->host_rrq_pa)); 216 init->r7.no_of_msix_vectors = 217 cpu_to_le32(dev->max_msix); 218 /* must be the COMM_PREFERRED_SETTINGS values */ 219 pr_warn("aacraid: Comm Interface type2 enabled\n"); 220 } 221 } 222 223 /* 224 * Increment the base address by the amount already used 225 */ 226 base = base + fibsize + host_rrq_size + aac_init_size; 227 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size + 228 aac_init_size); 229 230 /* 231 * Align the beginning of Headers to commalign 232 */ 233 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 234 base = base + align; 235 phys = phys + align; 236 /* 237 * Fill in addresses of the Comm Area Headers and Queues 238 */ 239 *commaddr = base; 240 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) 241 init->r7.comm_header_address = cpu_to_le32((u32)phys); 242 /* 243 * Increment the base address by the size of the CommArea 244 */ 245 base = base + commsize; 246 phys = phys + commsize; 247 /* 248 * Place the Printf buffer area after the Fast I/O comm area. 249 */ 250 dev->printfbuf = (void *)base; 251 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) { 252 init->r7.printfbuf = cpu_to_le32(phys); 253 init->r7.printfbufsiz = cpu_to_le32(printfbufsiz); 254 } 255 memset(base, 0, printfbufsiz); 256 return 1; 257 } 258 259 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 260 { 261 atomic_set(&q->numpending, 0); 262 q->dev = dev; 263 init_waitqueue_head(&q->cmdready); 264 INIT_LIST_HEAD(&q->cmdq); 265 init_waitqueue_head(&q->qfull); 266 spin_lock_init(&q->lockdata); 267 q->lock = &q->lockdata; 268 q->headers.producer = (__le32 *)mem; 269 q->headers.consumer = (__le32 *)(mem+1); 270 *(q->headers.producer) = cpu_to_le32(qsize); 271 *(q->headers.consumer) = cpu_to_le32(qsize); 272 q->entries = qsize; 273 } 274 275 static void aac_wait_for_io_completion(struct aac_dev *aac) 276 { 277 unsigned long flagv = 0; 278 int i = 0; 279 280 for (i = 60; i; --i) { 281 struct scsi_device *dev; 282 struct scsi_cmnd *command; 283 int active = 0; 284 285 __shost_for_each_device(dev, aac->scsi_host_ptr) { 286 spin_lock_irqsave(&dev->list_lock, flagv); 287 list_for_each_entry(command, &dev->cmd_list, list) { 288 if (command->SCp.phase == AAC_OWNER_FIRMWARE) { 289 active++; 290 break; 291 } 292 } 293 spin_unlock_irqrestore(&dev->list_lock, flagv); 294 if (active) 295 break; 296 297 } 298 /* 299 * We can exit If all the commands are complete 300 */ 301 if (active == 0) 302 break; 303 ssleep(1); 304 } 305 } 306 307 /** 308 * aac_send_shutdown - shutdown an adapter 309 * @dev: Adapter to shutdown 310 * 311 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 312 */ 313 314 int aac_send_shutdown(struct aac_dev * dev) 315 { 316 struct fib * fibctx; 317 struct aac_close *cmd; 318 int status = 0; 319 320 if (aac_adapter_check_health(dev)) 321 return status; 322 323 if (!dev->adapter_shutdown) { 324 mutex_lock(&dev->ioctl_mutex); 325 dev->adapter_shutdown = 1; 326 mutex_unlock(&dev->ioctl_mutex); 327 } 328 329 aac_wait_for_io_completion(dev); 330 331 fibctx = aac_fib_alloc(dev); 332 if (!fibctx) 333 return -ENOMEM; 334 aac_fib_init(fibctx); 335 336 cmd = (struct aac_close *) fib_data(fibctx); 337 cmd->command = cpu_to_le32(VM_CloseAll); 338 cmd->cid = cpu_to_le32(0xfffffffe); 339 340 status = aac_fib_send(ContainerCommand, 341 fibctx, 342 sizeof(struct aac_close), 343 FsaNormal, 344 -2 /* Timeout silently */, 1, 345 NULL, NULL); 346 347 if (status >= 0) 348 aac_fib_complete(fibctx); 349 /* FIB should be freed only after getting the response from the F/W */ 350 if (status != -ERESTARTSYS) 351 aac_fib_free(fibctx); 352 if (aac_is_src(dev) && 353 dev->msi_enabled) 354 aac_set_intx_mode(dev); 355 return status; 356 } 357 358 /** 359 * aac_comm_init - Initialise FSA data structures 360 * @dev: Adapter to initialise 361 * 362 * Initializes the data structures that are required for the FSA commuication 363 * interface to operate. 364 * Returns 365 * 1 - if we were able to init the commuication interface. 366 * 0 - If there were errors initing. This is a fatal error. 367 */ 368 369 static int aac_comm_init(struct aac_dev * dev) 370 { 371 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 372 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 373 u32 *headers; 374 struct aac_entry * queues; 375 unsigned long size; 376 struct aac_queue_block * comm = dev->queues; 377 /* 378 * Now allocate and initialize the zone structures used as our 379 * pool of FIB context records. The size of the zone is based 380 * on the system memory size. We also initialize the mutex used 381 * to protect the zone. 382 */ 383 spin_lock_init(&dev->fib_lock); 384 385 /* 386 * Allocate the physically contiguous space for the commuication 387 * queue headers. 388 */ 389 390 size = hdrsize + queuesize; 391 392 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 393 return -ENOMEM; 394 395 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 396 397 /* Adapter to Host normal priority Command queue */ 398 comm->queue[HostNormCmdQueue].base = queues; 399 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 400 queues += HOST_NORM_CMD_ENTRIES; 401 headers += 2; 402 403 /* Adapter to Host high priority command queue */ 404 comm->queue[HostHighCmdQueue].base = queues; 405 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 406 407 queues += HOST_HIGH_CMD_ENTRIES; 408 headers +=2; 409 410 /* Host to adapter normal priority command queue */ 411 comm->queue[AdapNormCmdQueue].base = queues; 412 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 413 414 queues += ADAP_NORM_CMD_ENTRIES; 415 headers += 2; 416 417 /* host to adapter high priority command queue */ 418 comm->queue[AdapHighCmdQueue].base = queues; 419 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 420 421 queues += ADAP_HIGH_CMD_ENTRIES; 422 headers += 2; 423 424 /* adapter to host normal priority response queue */ 425 comm->queue[HostNormRespQueue].base = queues; 426 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 427 queues += HOST_NORM_RESP_ENTRIES; 428 headers += 2; 429 430 /* adapter to host high priority response queue */ 431 comm->queue[HostHighRespQueue].base = queues; 432 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 433 434 queues += HOST_HIGH_RESP_ENTRIES; 435 headers += 2; 436 437 /* host to adapter normal priority response queue */ 438 comm->queue[AdapNormRespQueue].base = queues; 439 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 440 441 queues += ADAP_NORM_RESP_ENTRIES; 442 headers += 2; 443 444 /* host to adapter high priority response queue */ 445 comm->queue[AdapHighRespQueue].base = queues; 446 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 447 448 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 449 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 450 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 451 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 452 453 return 0; 454 } 455 456 void aac_define_int_mode(struct aac_dev *dev) 457 { 458 int i, msi_count, min_msix; 459 460 msi_count = i = 0; 461 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ 462 if (dev->max_msix == 0 || 463 dev->pdev->device == PMC_DEVICE_S6 || 464 dev->sync_mode) { 465 dev->max_msix = 1; 466 dev->vector_cap = 467 dev->scsi_host_ptr->can_queue + 468 AAC_NUM_MGT_FIB; 469 return; 470 } 471 472 /* Don't bother allocating more MSI-X vectors than cpus */ 473 msi_count = min(dev->max_msix, 474 (unsigned int)num_online_cpus()); 475 476 dev->max_msix = msi_count; 477 478 if (msi_count > AAC_MAX_MSIX) 479 msi_count = AAC_MAX_MSIX; 480 481 if (msi_count > 1 && 482 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { 483 min_msix = 2; 484 i = pci_alloc_irq_vectors(dev->pdev, 485 min_msix, msi_count, 486 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 487 if (i > 0) { 488 dev->msi_enabled = 1; 489 msi_count = i; 490 } else { 491 dev->msi_enabled = 0; 492 dev_err(&dev->pdev->dev, 493 "MSIX not supported!! Will try INTX 0x%x.\n", i); 494 } 495 } 496 497 if (!dev->msi_enabled) 498 dev->max_msix = msi_count = 1; 499 else { 500 if (dev->max_msix > msi_count) 501 dev->max_msix = msi_count; 502 } 503 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware) 504 dev->vector_cap = dev->scsi_host_ptr->can_queue + 505 AAC_NUM_MGT_FIB; 506 else 507 dev->vector_cap = (dev->scsi_host_ptr->can_queue + 508 AAC_NUM_MGT_FIB) / msi_count; 509 510 } 511 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 512 { 513 u32 status[5]; 514 struct Scsi_Host * host = dev->scsi_host_ptr; 515 extern int aac_sync_mode; 516 517 /* 518 * Check the preferred comm settings, defaults from template. 519 */ 520 dev->management_fib_count = 0; 521 spin_lock_init(&dev->manage_lock); 522 spin_lock_init(&dev->sync_lock); 523 spin_lock_init(&dev->iq_lock); 524 dev->max_fib_size = sizeof(struct hw_fib); 525 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 526 - sizeof(struct aac_fibhdr) 527 - sizeof(struct aac_write) + sizeof(struct sgentry)) 528 / sizeof(struct sgentry); 529 dev->comm_interface = AAC_COMM_PRODUCER; 530 dev->raw_io_interface = dev->raw_io_64 = 0; 531 532 533 /* 534 * Enable INTX mode, if not done already Enabled 535 */ 536 if (aac_is_msix_mode(dev)) { 537 aac_change_to_intx(dev); 538 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode"); 539 } 540 541 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 542 0, 0, 0, 0, 0, 0, 543 status+0, status+1, status+2, status+3, status+4)) && 544 (status[0] == 0x00000001)) { 545 dev->doorbell_mask = status[3]; 546 if (status[1] & AAC_OPT_NEW_COMM_64) 547 dev->raw_io_64 = 1; 548 dev->sync_mode = aac_sync_mode; 549 if (dev->a_ops.adapter_comm && 550 (status[1] & AAC_OPT_NEW_COMM)) { 551 dev->comm_interface = AAC_COMM_MESSAGE; 552 dev->raw_io_interface = 1; 553 if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) { 554 /* driver supports TYPE1 (Tupelo) */ 555 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 556 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) { 557 /* driver supports TYPE2 (Denali, Yosemite) */ 558 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 559 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) { 560 /* driver supports TYPE3 (Yosemite, Thor) */ 561 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3; 562 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) { 563 /* not supported TYPE - switch to sync. mode */ 564 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 565 dev->sync_mode = 1; 566 } 567 } 568 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) && 569 (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE))) 570 dev->sa_firmware = 1; 571 else 572 dev->sa_firmware = 0; 573 574 if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET)) 575 dev->soft_reset_support = 1; 576 else 577 dev->soft_reset_support = 0; 578 579 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 580 (status[2] > dev->base_size)) { 581 aac_adapter_ioremap(dev, 0); 582 dev->base_size = status[2]; 583 if (aac_adapter_ioremap(dev, status[2])) { 584 /* remap failed, go back ... */ 585 dev->comm_interface = AAC_COMM_PRODUCER; 586 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 587 printk(KERN_WARNING 588 "aacraid: unable to map adapter.\n"); 589 return NULL; 590 } 591 } 592 } 593 } 594 dev->max_msix = 0; 595 dev->msi_enabled = 0; 596 dev->adapter_shutdown = 0; 597 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 598 0, 0, 0, 0, 0, 0, 599 status+0, status+1, status+2, status+3, status+4)) 600 && (status[0] == 0x00000001)) { 601 /* 602 * status[1] >> 16 maximum command size in KB 603 * status[1] & 0xFFFF maximum FIB size 604 * status[2] >> 16 maximum SG elements to driver 605 * status[2] & 0xFFFF maximum SG elements from driver 606 * status[3] & 0xFFFF maximum number FIBs outstanding 607 */ 608 host->max_sectors = (status[1] >> 16) << 1; 609 /* Multiple of 32 for PMC */ 610 dev->max_fib_size = status[1] & 0xFFE0; 611 host->sg_tablesize = status[2] >> 16; 612 dev->sg_tablesize = status[2] & 0xFFFF; 613 if (aac_is_src(dev)) { 614 if (host->can_queue > (status[3] >> 16) - 615 AAC_NUM_MGT_FIB) 616 host->can_queue = (status[3] >> 16) - 617 AAC_NUM_MGT_FIB; 618 } else if (host->can_queue > (status[3] & 0xFFFF) - 619 AAC_NUM_MGT_FIB) 620 host->can_queue = (status[3] & 0xFFFF) - 621 AAC_NUM_MGT_FIB; 622 623 dev->max_num_aif = status[4] & 0xFFFF; 624 } 625 if (numacb > 0) { 626 if (numacb < host->can_queue) 627 host->can_queue = numacb; 628 else 629 pr_warn("numacb=%d ignored\n", numacb); 630 } 631 632 if (aac_is_src(dev)) 633 aac_define_int_mode(dev); 634 /* 635 * Ok now init the communication subsystem 636 */ 637 638 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 639 if (dev->queues == NULL) { 640 printk(KERN_ERR "Error could not allocate comm region.\n"); 641 return NULL; 642 } 643 644 if (aac_comm_init(dev)<0){ 645 kfree(dev->queues); 646 return NULL; 647 } 648 /* 649 * Initialize the list of fibs 650 */ 651 if (aac_fib_setup(dev) < 0) { 652 kfree(dev->queues); 653 return NULL; 654 } 655 656 INIT_LIST_HEAD(&dev->fib_list); 657 INIT_LIST_HEAD(&dev->sync_fib_list); 658 659 return dev; 660 } 661 662