1 /* 2 * Adaptec AAC series RAID controller driver 3 * (c) Copyright 2001 Red Hat Inc. 4 * 5 * based on the old aacraid driver that is.. 6 * Adaptec aacraid device driver for Linux. 7 * 8 * Copyright (c) 2000-2010 Adaptec, Inc. 9 * 2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 10 * 2016-2017 Microsemi Corp. (aacraid@microsemi.com) 11 * 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2, or (at your option) 15 * any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; see the file COPYING. If not, write to 24 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 25 * 26 * Module Name: 27 * comminit.c 28 * 29 * Abstract: This supports the initialization of the host adapter commuication interface. 30 * This is a platform dependent module for the pci cyclone board. 31 * 32 */ 33 34 #include <linux/kernel.h> 35 #include <linux/init.h> 36 #include <linux/types.h> 37 #include <linux/pci.h> 38 #include <linux/spinlock.h> 39 #include <linux/slab.h> 40 #include <linux/blkdev.h> 41 #include <linux/delay.h> 42 #include <linux/completion.h> 43 #include <linux/mm.h> 44 #include <scsi/scsi_host.h> 45 46 #include "aacraid.h" 47 48 struct aac_common aac_config = { 49 .irq_mod = 1 50 }; 51 52 static inline int aac_is_msix_mode(struct aac_dev *dev) 53 { 54 u32 status = 0; 55 56 if (dev->pdev->device == PMC_DEVICE_S6 || 57 dev->pdev->device == PMC_DEVICE_S7 || 58 dev->pdev->device == PMC_DEVICE_S8) { 59 status = src_readl(dev, MUnit.OMR); 60 } 61 return (status & AAC_INT_MODE_MSIX); 62 } 63 64 static inline void aac_change_to_intx(struct aac_dev *dev) 65 { 66 aac_src_access_devreg(dev, AAC_DISABLE_MSIX); 67 aac_src_access_devreg(dev, AAC_ENABLE_INTX); 68 } 69 70 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 71 { 72 unsigned char *base; 73 unsigned long size, align; 74 const unsigned long fibsize = dev->max_fib_size; 75 const unsigned long printfbufsiz = 256; 76 unsigned long host_rrq_size, aac_init_size; 77 union aac_init *init; 78 dma_addr_t phys; 79 unsigned long aac_max_hostphysmempages; 80 81 if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) || 82 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) || 83 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && 84 !dev->sa_firmware)) { 85 host_rrq_size = 86 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) 87 * sizeof(u32); 88 aac_init_size = sizeof(union aac_init); 89 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && 90 dev->sa_firmware) { 91 host_rrq_size = (dev->scsi_host_ptr->can_queue 92 + AAC_NUM_MGT_FIB) * sizeof(u32) * AAC_MAX_MSIX; 93 aac_init_size = sizeof(union aac_init) + 94 (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq); 95 } else { 96 host_rrq_size = 0; 97 aac_init_size = sizeof(union aac_init); 98 } 99 size = fibsize + aac_init_size + commsize + commalign + 100 printfbufsiz + host_rrq_size; 101 102 base = pci_alloc_consistent(dev->pdev, size, &phys); 103 104 if (base == NULL) { 105 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 106 return 0; 107 } 108 109 dev->comm_addr = (void *)base; 110 dev->comm_phys = phys; 111 dev->comm_size = size; 112 113 if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) || 114 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) || 115 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) { 116 dev->host_rrq = (u32 *)(base + fibsize); 117 dev->host_rrq_pa = phys + fibsize; 118 memset(dev->host_rrq, 0, host_rrq_size); 119 } 120 121 dev->init = (union aac_init *)(base + fibsize + host_rrq_size); 122 dev->init_pa = phys + fibsize + host_rrq_size; 123 124 init = dev->init; 125 126 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) { 127 int i; 128 u64 addr; 129 130 init->r8.init_struct_revision = 131 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8); 132 init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 133 INITFLAGS_DRIVER_USES_UTC_TIME | 134 INITFLAGS_DRIVER_SUPPORTS_PM); 135 init->r8.init_flags |= 136 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE); 137 init->r8.rr_queue_count = cpu_to_le32(dev->max_msix); 138 init->r8.max_io_size = 139 cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 140 init->r8.max_num_aif = init->r8.reserved1 = 141 init->r8.reserved2 = 0; 142 143 for (i = 0; i < dev->max_msix; i++) { 144 addr = (u64)dev->host_rrq_pa + dev->vector_cap * i * 145 sizeof(u32); 146 init->r8.rrq[i].host_addr_high = cpu_to_le32( 147 upper_32_bits(addr)); 148 init->r8.rrq[i].host_addr_low = cpu_to_le32( 149 lower_32_bits(addr)); 150 init->r8.rrq[i].msix_id = i; 151 init->r8.rrq[i].element_count = cpu_to_le16( 152 (u16)dev->vector_cap); 153 init->r8.rrq[i].comp_thresh = 154 init->r8.rrq[i].unused = 0; 155 } 156 157 pr_warn("aacraid: Comm Interface type3 enabled\n"); 158 } else { 159 init->r7.init_struct_revision = 160 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 161 if (dev->max_fib_size != sizeof(struct hw_fib)) 162 init->r7.init_struct_revision = 163 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 164 init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION); 165 init->r7.fsrev = cpu_to_le32(dev->fsrev); 166 167 /* 168 * Adapter Fibs are the first thing allocated so that they 169 * start page aligned 170 */ 171 dev->aif_base_va = (struct hw_fib *)base; 172 173 init->r7.adapter_fibs_virtual_address = 0; 174 init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys); 175 init->r7.adapter_fibs_size = cpu_to_le32(fibsize); 176 init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib)); 177 178 /* 179 * number of 4k pages of host physical memory. The aacraid fw 180 * needs this number to be less than 4gb worth of pages. New 181 * firmware doesn't have any issues with the mapping system, but 182 * older Firmware did, and had *troubles* dealing with the math 183 * overloading past 32 bits, thus we must limit this field. 184 */ 185 aac_max_hostphysmempages = 186 dma_get_required_mask(&dev->pdev->dev) >> 12; 187 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 188 init->r7.host_phys_mem_pages = 189 cpu_to_le32(aac_max_hostphysmempages); 190 else 191 init->r7.host_phys_mem_pages = 192 cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 193 194 init->r7.init_flags = 195 cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 196 INITFLAGS_DRIVER_SUPPORTS_PM); 197 init->r7.max_io_commands = 198 cpu_to_le32(dev->scsi_host_ptr->can_queue + 199 AAC_NUM_MGT_FIB); 200 init->r7.max_io_size = 201 cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 202 init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size); 203 init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif); 204 205 if (dev->comm_interface == AAC_COMM_MESSAGE) { 206 init->r7.init_flags |= 207 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 208 pr_warn("aacraid: Comm Interface enabled\n"); 209 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 210 init->r7.init_struct_revision = 211 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6); 212 init->r7.init_flags |= 213 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 214 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | 215 INITFLAGS_FAST_JBOD_SUPPORTED); 216 init->r7.host_rrq_addr_high = 217 cpu_to_le32(upper_32_bits(dev->host_rrq_pa)); 218 init->r7.host_rrq_addr_low = 219 cpu_to_le32(lower_32_bits(dev->host_rrq_pa)); 220 pr_warn("aacraid: Comm Interface type1 enabled\n"); 221 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 222 init->r7.init_struct_revision = 223 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7); 224 init->r7.init_flags |= 225 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 226 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | 227 INITFLAGS_FAST_JBOD_SUPPORTED); 228 init->r7.host_rrq_addr_high = 229 cpu_to_le32(upper_32_bits(dev->host_rrq_pa)); 230 init->r7.host_rrq_addr_low = 231 cpu_to_le32(lower_32_bits(dev->host_rrq_pa)); 232 init->r7.no_of_msix_vectors = 233 cpu_to_le32(dev->max_msix); 234 /* must be the COMM_PREFERRED_SETTINGS values */ 235 pr_warn("aacraid: Comm Interface type2 enabled\n"); 236 } 237 } 238 239 /* 240 * Increment the base address by the amount already used 241 */ 242 base = base + fibsize + host_rrq_size + aac_init_size; 243 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size + 244 aac_init_size); 245 246 /* 247 * Align the beginning of Headers to commalign 248 */ 249 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 250 base = base + align; 251 phys = phys + align; 252 /* 253 * Fill in addresses of the Comm Area Headers and Queues 254 */ 255 *commaddr = base; 256 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) 257 init->r7.comm_header_address = cpu_to_le32((u32)phys); 258 /* 259 * Increment the base address by the size of the CommArea 260 */ 261 base = base + commsize; 262 phys = phys + commsize; 263 /* 264 * Place the Printf buffer area after the Fast I/O comm area. 265 */ 266 dev->printfbuf = (void *)base; 267 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) { 268 init->r7.printfbuf = cpu_to_le32(phys); 269 init->r7.printfbufsiz = cpu_to_le32(printfbufsiz); 270 } 271 memset(base, 0, printfbufsiz); 272 return 1; 273 } 274 275 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 276 { 277 atomic_set(&q->numpending, 0); 278 q->dev = dev; 279 init_waitqueue_head(&q->cmdready); 280 INIT_LIST_HEAD(&q->cmdq); 281 init_waitqueue_head(&q->qfull); 282 spin_lock_init(&q->lockdata); 283 q->lock = &q->lockdata; 284 q->headers.producer = (__le32 *)mem; 285 q->headers.consumer = (__le32 *)(mem+1); 286 *(q->headers.producer) = cpu_to_le32(qsize); 287 *(q->headers.consumer) = cpu_to_le32(qsize); 288 q->entries = qsize; 289 } 290 291 /** 292 * aac_send_shutdown - shutdown an adapter 293 * @dev: Adapter to shutdown 294 * 295 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 296 */ 297 298 int aac_send_shutdown(struct aac_dev * dev) 299 { 300 struct fib * fibctx; 301 struct aac_close *cmd; 302 int status; 303 304 fibctx = aac_fib_alloc(dev); 305 if (!fibctx) 306 return -ENOMEM; 307 aac_fib_init(fibctx); 308 309 mutex_lock(&dev->ioctl_mutex); 310 dev->adapter_shutdown = 1; 311 mutex_unlock(&dev->ioctl_mutex); 312 313 cmd = (struct aac_close *) fib_data(fibctx); 314 cmd->command = cpu_to_le32(VM_CloseAll); 315 cmd->cid = cpu_to_le32(0xfffffffe); 316 317 status = aac_fib_send(ContainerCommand, 318 fibctx, 319 sizeof(struct aac_close), 320 FsaNormal, 321 -2 /* Timeout silently */, 1, 322 NULL, NULL); 323 324 if (status >= 0) 325 aac_fib_complete(fibctx); 326 /* FIB should be freed only after getting the response from the F/W */ 327 if (status != -ERESTARTSYS) 328 aac_fib_free(fibctx); 329 if ((dev->pdev->device == PMC_DEVICE_S7 || 330 dev->pdev->device == PMC_DEVICE_S8 || 331 dev->pdev->device == PMC_DEVICE_S9) && 332 dev->msi_enabled) 333 aac_set_intx_mode(dev); 334 return status; 335 } 336 337 /** 338 * aac_comm_init - Initialise FSA data structures 339 * @dev: Adapter to initialise 340 * 341 * Initializes the data structures that are required for the FSA commuication 342 * interface to operate. 343 * Returns 344 * 1 - if we were able to init the commuication interface. 345 * 0 - If there were errors initing. This is a fatal error. 346 */ 347 348 static int aac_comm_init(struct aac_dev * dev) 349 { 350 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 351 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 352 u32 *headers; 353 struct aac_entry * queues; 354 unsigned long size; 355 struct aac_queue_block * comm = dev->queues; 356 /* 357 * Now allocate and initialize the zone structures used as our 358 * pool of FIB context records. The size of the zone is based 359 * on the system memory size. We also initialize the mutex used 360 * to protect the zone. 361 */ 362 spin_lock_init(&dev->fib_lock); 363 364 /* 365 * Allocate the physically contiguous space for the commuication 366 * queue headers. 367 */ 368 369 size = hdrsize + queuesize; 370 371 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 372 return -ENOMEM; 373 374 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 375 376 /* Adapter to Host normal priority Command queue */ 377 comm->queue[HostNormCmdQueue].base = queues; 378 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 379 queues += HOST_NORM_CMD_ENTRIES; 380 headers += 2; 381 382 /* Adapter to Host high priority command queue */ 383 comm->queue[HostHighCmdQueue].base = queues; 384 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 385 386 queues += HOST_HIGH_CMD_ENTRIES; 387 headers +=2; 388 389 /* Host to adapter normal priority command queue */ 390 comm->queue[AdapNormCmdQueue].base = queues; 391 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 392 393 queues += ADAP_NORM_CMD_ENTRIES; 394 headers += 2; 395 396 /* host to adapter high priority command queue */ 397 comm->queue[AdapHighCmdQueue].base = queues; 398 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 399 400 queues += ADAP_HIGH_CMD_ENTRIES; 401 headers += 2; 402 403 /* adapter to host normal priority response queue */ 404 comm->queue[HostNormRespQueue].base = queues; 405 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 406 queues += HOST_NORM_RESP_ENTRIES; 407 headers += 2; 408 409 /* adapter to host high priority response queue */ 410 comm->queue[HostHighRespQueue].base = queues; 411 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 412 413 queues += HOST_HIGH_RESP_ENTRIES; 414 headers += 2; 415 416 /* host to adapter normal priority response queue */ 417 comm->queue[AdapNormRespQueue].base = queues; 418 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 419 420 queues += ADAP_NORM_RESP_ENTRIES; 421 headers += 2; 422 423 /* host to adapter high priority response queue */ 424 comm->queue[AdapHighRespQueue].base = queues; 425 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 426 427 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 428 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 429 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 430 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 431 432 return 0; 433 } 434 435 void aac_define_int_mode(struct aac_dev *dev) 436 { 437 int i, msi_count, min_msix; 438 439 msi_count = i = 0; 440 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ 441 if (dev->max_msix == 0 || 442 dev->pdev->device == PMC_DEVICE_S6 || 443 dev->sync_mode) { 444 dev->max_msix = 1; 445 dev->vector_cap = 446 dev->scsi_host_ptr->can_queue + 447 AAC_NUM_MGT_FIB; 448 return; 449 } 450 451 /* Don't bother allocating more MSI-X vectors than cpus */ 452 msi_count = min(dev->max_msix, 453 (unsigned int)num_online_cpus()); 454 455 dev->max_msix = msi_count; 456 457 if (msi_count > AAC_MAX_MSIX) 458 msi_count = AAC_MAX_MSIX; 459 460 if (msi_count > 1 && 461 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { 462 min_msix = 2; 463 i = pci_alloc_irq_vectors(dev->pdev, 464 min_msix, msi_count, 465 PCI_IRQ_MSIX | PCI_IRQ_AFFINITY); 466 if (i > 0) { 467 dev->msi_enabled = 1; 468 msi_count = i; 469 } else { 470 dev->msi_enabled = 0; 471 dev_err(&dev->pdev->dev, 472 "MSIX not supported!! Will try INTX 0x%x.\n", i); 473 } 474 } 475 476 if (!dev->msi_enabled) 477 dev->max_msix = msi_count = 1; 478 else { 479 if (dev->max_msix > msi_count) 480 dev->max_msix = msi_count; 481 } 482 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware) 483 dev->vector_cap = dev->scsi_host_ptr->can_queue + 484 AAC_NUM_MGT_FIB; 485 else 486 dev->vector_cap = (dev->scsi_host_ptr->can_queue + 487 AAC_NUM_MGT_FIB) / msi_count; 488 489 } 490 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 491 { 492 u32 status[5]; 493 struct Scsi_Host * host = dev->scsi_host_ptr; 494 extern int aac_sync_mode; 495 496 /* 497 * Check the preferred comm settings, defaults from template. 498 */ 499 dev->management_fib_count = 0; 500 spin_lock_init(&dev->manage_lock); 501 spin_lock_init(&dev->sync_lock); 502 spin_lock_init(&dev->iq_lock); 503 dev->max_fib_size = sizeof(struct hw_fib); 504 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 505 - sizeof(struct aac_fibhdr) 506 - sizeof(struct aac_write) + sizeof(struct sgentry)) 507 / sizeof(struct sgentry); 508 dev->comm_interface = AAC_COMM_PRODUCER; 509 dev->raw_io_interface = dev->raw_io_64 = 0; 510 511 512 /* 513 * Enable INTX mode, if not done already Enabled 514 */ 515 if (aac_is_msix_mode(dev)) { 516 aac_change_to_intx(dev); 517 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode"); 518 } 519 520 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 521 0, 0, 0, 0, 0, 0, 522 status+0, status+1, status+2, status+3, status+4)) && 523 (status[0] == 0x00000001)) { 524 dev->doorbell_mask = status[3]; 525 if (status[1] & AAC_OPT_NEW_COMM_64) 526 dev->raw_io_64 = 1; 527 dev->sync_mode = aac_sync_mode; 528 if (dev->a_ops.adapter_comm && 529 (status[1] & AAC_OPT_NEW_COMM)) { 530 dev->comm_interface = AAC_COMM_MESSAGE; 531 dev->raw_io_interface = 1; 532 if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) { 533 /* driver supports TYPE1 (Tupelo) */ 534 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 535 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) { 536 /* driver supports TYPE2 (Denali, Yosemite) */ 537 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 538 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) { 539 /* driver supports TYPE3 (Yosemite, Thor) */ 540 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3; 541 } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) { 542 /* not supported TYPE - switch to sync. mode */ 543 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 544 dev->sync_mode = 1; 545 } 546 } 547 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) && 548 (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE))) 549 dev->sa_firmware = 1; 550 else 551 dev->sa_firmware = 0; 552 553 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 554 (status[2] > dev->base_size)) { 555 aac_adapter_ioremap(dev, 0); 556 dev->base_size = status[2]; 557 if (aac_adapter_ioremap(dev, status[2])) { 558 /* remap failed, go back ... */ 559 dev->comm_interface = AAC_COMM_PRODUCER; 560 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 561 printk(KERN_WARNING 562 "aacraid: unable to map adapter.\n"); 563 return NULL; 564 } 565 } 566 } 567 } 568 dev->max_msix = 0; 569 dev->msi_enabled = 0; 570 dev->adapter_shutdown = 0; 571 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 572 0, 0, 0, 0, 0, 0, 573 status+0, status+1, status+2, status+3, status+4)) 574 && (status[0] == 0x00000001)) { 575 /* 576 * status[1] >> 16 maximum command size in KB 577 * status[1] & 0xFFFF maximum FIB size 578 * status[2] >> 16 maximum SG elements to driver 579 * status[2] & 0xFFFF maximum SG elements from driver 580 * status[3] & 0xFFFF maximum number FIBs outstanding 581 */ 582 host->max_sectors = (status[1] >> 16) << 1; 583 /* Multiple of 32 for PMC */ 584 dev->max_fib_size = status[1] & 0xFFE0; 585 host->sg_tablesize = status[2] >> 16; 586 dev->sg_tablesize = status[2] & 0xFFFF; 587 if (dev->pdev->device == PMC_DEVICE_S7 || 588 dev->pdev->device == PMC_DEVICE_S8 || 589 dev->pdev->device == PMC_DEVICE_S9) { 590 if (host->can_queue > (status[3] >> 16) - 591 AAC_NUM_MGT_FIB) 592 host->can_queue = (status[3] >> 16) - 593 AAC_NUM_MGT_FIB; 594 } else if (host->can_queue > (status[3] & 0xFFFF) - 595 AAC_NUM_MGT_FIB) 596 host->can_queue = (status[3] & 0xFFFF) - 597 AAC_NUM_MGT_FIB; 598 599 dev->max_num_aif = status[4] & 0xFFFF; 600 } 601 if (numacb > 0) { 602 if (numacb < host->can_queue) 603 host->can_queue = numacb; 604 else 605 pr_warn("numacb=%d ignored\n", numacb); 606 } 607 608 if (dev->pdev->device == PMC_DEVICE_S6 || 609 dev->pdev->device == PMC_DEVICE_S7 || 610 dev->pdev->device == PMC_DEVICE_S8 || 611 dev->pdev->device == PMC_DEVICE_S9) 612 aac_define_int_mode(dev); 613 /* 614 * Ok now init the communication subsystem 615 */ 616 617 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 618 if (dev->queues == NULL) { 619 printk(KERN_ERR "Error could not allocate comm region.\n"); 620 return NULL; 621 } 622 623 if (aac_comm_init(dev)<0){ 624 kfree(dev->queues); 625 return NULL; 626 } 627 /* 628 * Initialize the list of fibs 629 */ 630 if (aac_fib_setup(dev) < 0) { 631 kfree(dev->queues); 632 return NULL; 633 } 634 635 INIT_LIST_HEAD(&dev->fib_list); 636 INIT_LIST_HEAD(&dev->sync_fib_list); 637 638 return dev; 639 } 640 641