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 PMC-Sierra, Inc. (aacraid@pmc-sierra.com) 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; either version 2, or (at your option) 14 * any later version. 15 * 16 * This program is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19 * GNU General Public License for more details. 20 * 21 * You should have received a copy of the GNU General Public License 22 * along with this program; see the file COPYING. If not, write to 23 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. 24 * 25 * Module Name: 26 * comminit.c 27 * 28 * Abstract: This supports the initialization of the host adapter commuication interface. 29 * This is a platform dependent module for the pci cyclone board. 30 * 31 */ 32 33 #include <linux/kernel.h> 34 #include <linux/init.h> 35 #include <linux/types.h> 36 #include <linux/pci.h> 37 #include <linux/spinlock.h> 38 #include <linux/slab.h> 39 #include <linux/blkdev.h> 40 #include <linux/completion.h> 41 #include <linux/mm.h> 42 #include <scsi/scsi_host.h> 43 44 #include "aacraid.h" 45 46 struct aac_common aac_config = { 47 .irq_mod = 1 48 }; 49 50 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 51 { 52 unsigned char *base; 53 unsigned long size, align; 54 const unsigned long fibsize = dev->max_fib_size; 55 const unsigned long printfbufsiz = 256; 56 unsigned long host_rrq_size = 0; 57 struct aac_init *init; 58 dma_addr_t phys; 59 unsigned long aac_max_hostphysmempages; 60 61 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 62 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) 63 host_rrq_size = (dev->scsi_host_ptr->can_queue 64 + AAC_NUM_MGT_FIB) * sizeof(u32); 65 size = fibsize + sizeof(struct aac_init) + commsize + 66 commalign + printfbufsiz + host_rrq_size; 67 68 base = pci_alloc_consistent(dev->pdev, size, &phys); 69 70 if(base == NULL) 71 { 72 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 73 return 0; 74 } 75 dev->comm_addr = (void *)base; 76 dev->comm_phys = phys; 77 dev->comm_size = size; 78 79 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 80 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 81 dev->host_rrq = (u32 *)(base + fibsize); 82 dev->host_rrq_pa = phys + fibsize; 83 memset(dev->host_rrq, 0, host_rrq_size); 84 } 85 86 dev->init = (struct aac_init *)(base + fibsize + host_rrq_size); 87 dev->init_pa = phys + fibsize + host_rrq_size; 88 89 init = dev->init; 90 91 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 92 if (dev->max_fib_size != sizeof(struct hw_fib)) 93 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 94 init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION); 95 init->fsrev = cpu_to_le32(dev->fsrev); 96 97 /* 98 * Adapter Fibs are the first thing allocated so that they 99 * start page aligned 100 */ 101 dev->aif_base_va = (struct hw_fib *)base; 102 103 init->AdapterFibsVirtualAddress = 0; 104 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 105 init->AdapterFibsSize = cpu_to_le32(fibsize); 106 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 107 /* 108 * number of 4k pages of host physical memory. The aacraid fw needs 109 * this number to be less than 4gb worth of pages. New firmware doesn't 110 * have any issues with the mapping system, but older Firmware did, and 111 * had *troubles* dealing with the math overloading past 32 bits, thus 112 * we must limit this field. 113 */ 114 aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12; 115 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 116 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages); 117 else 118 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 119 120 init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 121 INITFLAGS_DRIVER_SUPPORTS_PM); 122 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 123 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 124 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 125 init->MaxNumAif = cpu_to_le32(dev->max_num_aif); 126 127 if (dev->comm_interface == AAC_COMM_MESSAGE) { 128 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 129 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 130 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 131 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6); 132 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 133 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED); 134 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32)); 135 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff)); 136 dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n")); 137 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 138 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7); 139 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 140 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED); 141 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32)); 142 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff)); 143 /* number of MSI-X */ 144 init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix); 145 dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n")); 146 } 147 148 /* 149 * Increment the base address by the amount already used 150 */ 151 base = base + fibsize + host_rrq_size + sizeof(struct aac_init); 152 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size + 153 sizeof(struct aac_init)); 154 155 /* 156 * Align the beginning of Headers to commalign 157 */ 158 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 159 base = base + align; 160 phys = phys + align; 161 /* 162 * Fill in addresses of the Comm Area Headers and Queues 163 */ 164 *commaddr = base; 165 init->CommHeaderAddress = cpu_to_le32((u32)phys); 166 /* 167 * Increment the base address by the size of the CommArea 168 */ 169 base = base + commsize; 170 phys = phys + commsize; 171 /* 172 * Place the Printf buffer area after the Fast I/O comm area. 173 */ 174 dev->printfbuf = (void *)base; 175 init->printfbuf = cpu_to_le32(phys); 176 init->printfbufsiz = cpu_to_le32(printfbufsiz); 177 memset(base, 0, printfbufsiz); 178 return 1; 179 } 180 181 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 182 { 183 atomic_set(&q->numpending, 0); 184 q->dev = dev; 185 init_waitqueue_head(&q->cmdready); 186 INIT_LIST_HEAD(&q->cmdq); 187 init_waitqueue_head(&q->qfull); 188 spin_lock_init(&q->lockdata); 189 q->lock = &q->lockdata; 190 q->headers.producer = (__le32 *)mem; 191 q->headers.consumer = (__le32 *)(mem+1); 192 *(q->headers.producer) = cpu_to_le32(qsize); 193 *(q->headers.consumer) = cpu_to_le32(qsize); 194 q->entries = qsize; 195 } 196 197 /** 198 * aac_send_shutdown - shutdown an adapter 199 * @dev: Adapter to shutdown 200 * 201 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 202 */ 203 204 int aac_send_shutdown(struct aac_dev * dev) 205 { 206 struct fib * fibctx; 207 struct aac_close *cmd; 208 int status; 209 210 fibctx = aac_fib_alloc(dev); 211 if (!fibctx) 212 return -ENOMEM; 213 aac_fib_init(fibctx); 214 215 cmd = (struct aac_close *) fib_data(fibctx); 216 217 cmd->command = cpu_to_le32(VM_CloseAll); 218 cmd->cid = cpu_to_le32(0xfffffffe); 219 220 status = aac_fib_send(ContainerCommand, 221 fibctx, 222 sizeof(struct aac_close), 223 FsaNormal, 224 -2 /* Timeout silently */, 1, 225 NULL, NULL); 226 227 if (status >= 0) 228 aac_fib_complete(fibctx); 229 /* FIB should be freed only after getting the response from the F/W */ 230 if (status != -ERESTARTSYS) 231 aac_fib_free(fibctx); 232 dev->adapter_shutdown = 1; 233 if ((dev->pdev->device == PMC_DEVICE_S7 || 234 dev->pdev->device == PMC_DEVICE_S8 || 235 dev->pdev->device == PMC_DEVICE_S9) && 236 dev->msi_enabled) 237 aac_src_access_devreg(dev, AAC_ENABLE_INTX); 238 return status; 239 } 240 241 /** 242 * aac_comm_init - Initialise FSA data structures 243 * @dev: Adapter to initialise 244 * 245 * Initializes the data structures that are required for the FSA commuication 246 * interface to operate. 247 * Returns 248 * 1 - if we were able to init the commuication interface. 249 * 0 - If there were errors initing. This is a fatal error. 250 */ 251 252 static int aac_comm_init(struct aac_dev * dev) 253 { 254 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 255 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 256 u32 *headers; 257 struct aac_entry * queues; 258 unsigned long size; 259 struct aac_queue_block * comm = dev->queues; 260 /* 261 * Now allocate and initialize the zone structures used as our 262 * pool of FIB context records. The size of the zone is based 263 * on the system memory size. We also initialize the mutex used 264 * to protect the zone. 265 */ 266 spin_lock_init(&dev->fib_lock); 267 268 /* 269 * Allocate the physically contiguous space for the commuication 270 * queue headers. 271 */ 272 273 size = hdrsize + queuesize; 274 275 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 276 return -ENOMEM; 277 278 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 279 280 /* Adapter to Host normal priority Command queue */ 281 comm->queue[HostNormCmdQueue].base = queues; 282 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 283 queues += HOST_NORM_CMD_ENTRIES; 284 headers += 2; 285 286 /* Adapter to Host high priority command queue */ 287 comm->queue[HostHighCmdQueue].base = queues; 288 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 289 290 queues += HOST_HIGH_CMD_ENTRIES; 291 headers +=2; 292 293 /* Host to adapter normal priority command queue */ 294 comm->queue[AdapNormCmdQueue].base = queues; 295 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 296 297 queues += ADAP_NORM_CMD_ENTRIES; 298 headers += 2; 299 300 /* host to adapter high priority command queue */ 301 comm->queue[AdapHighCmdQueue].base = queues; 302 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 303 304 queues += ADAP_HIGH_CMD_ENTRIES; 305 headers += 2; 306 307 /* adapter to host normal priority response queue */ 308 comm->queue[HostNormRespQueue].base = queues; 309 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 310 queues += HOST_NORM_RESP_ENTRIES; 311 headers += 2; 312 313 /* adapter to host high priority response queue */ 314 comm->queue[HostHighRespQueue].base = queues; 315 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 316 317 queues += HOST_HIGH_RESP_ENTRIES; 318 headers += 2; 319 320 /* host to adapter normal priority response queue */ 321 comm->queue[AdapNormRespQueue].base = queues; 322 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 323 324 queues += ADAP_NORM_RESP_ENTRIES; 325 headers += 2; 326 327 /* host to adapter high priority response queue */ 328 comm->queue[AdapHighRespQueue].base = queues; 329 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 330 331 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 332 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 333 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 334 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 335 336 return 0; 337 } 338 339 void aac_define_int_mode(struct aac_dev *dev) 340 { 341 int i, msi_count, min_msix; 342 343 msi_count = i = 0; 344 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ 345 if (dev->max_msix == 0 || 346 dev->pdev->device == PMC_DEVICE_S6 || 347 dev->sync_mode) { 348 dev->max_msix = 1; 349 dev->vector_cap = 350 dev->scsi_host_ptr->can_queue + 351 AAC_NUM_MGT_FIB; 352 return; 353 } 354 355 /* Don't bother allocating more MSI-X vectors than cpus */ 356 msi_count = min(dev->max_msix, 357 (unsigned int)num_online_cpus()); 358 359 dev->max_msix = msi_count; 360 361 if (msi_count > AAC_MAX_MSIX) 362 msi_count = AAC_MAX_MSIX; 363 364 for (i = 0; i < msi_count; i++) 365 dev->msixentry[i].entry = i; 366 367 if (msi_count > 1 && 368 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { 369 min_msix = 2; 370 i = pci_enable_msix_range(dev->pdev, 371 dev->msixentry, 372 min_msix, 373 msi_count); 374 if (i > 0) { 375 dev->msi_enabled = 1; 376 msi_count = i; 377 } else { 378 dev->msi_enabled = 0; 379 printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", 380 dev->name, dev->id, i); 381 } 382 } 383 384 if (!dev->msi_enabled) { 385 msi_count = 1; 386 i = pci_enable_msi(dev->pdev); 387 388 if (!i) { 389 dev->msi_enabled = 1; 390 dev->msi = 1; 391 } else { 392 printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n", 393 dev->name, dev->id, i); 394 } 395 } 396 397 if (!dev->msi_enabled) 398 dev->max_msix = msi_count = 1; 399 else { 400 if (dev->max_msix > msi_count) 401 dev->max_msix = msi_count; 402 } 403 dev->vector_cap = 404 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) / 405 msi_count; 406 } 407 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 408 { 409 u32 status[5]; 410 struct Scsi_Host * host = dev->scsi_host_ptr; 411 extern int aac_sync_mode; 412 413 /* 414 * Check the preferred comm settings, defaults from template. 415 */ 416 dev->management_fib_count = 0; 417 spin_lock_init(&dev->manage_lock); 418 spin_lock_init(&dev->sync_lock); 419 spin_lock_init(&dev->iq_lock); 420 dev->max_fib_size = sizeof(struct hw_fib); 421 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 422 - sizeof(struct aac_fibhdr) 423 - sizeof(struct aac_write) + sizeof(struct sgentry)) 424 / sizeof(struct sgentry); 425 dev->comm_interface = AAC_COMM_PRODUCER; 426 dev->raw_io_interface = dev->raw_io_64 = 0; 427 428 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 429 0, 0, 0, 0, 0, 0, 430 status+0, status+1, status+2, status+3, NULL)) && 431 (status[0] == 0x00000001)) { 432 dev->doorbell_mask = status[3]; 433 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 434 dev->raw_io_64 = 1; 435 dev->sync_mode = aac_sync_mode; 436 if (dev->a_ops.adapter_comm && 437 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) { 438 dev->comm_interface = AAC_COMM_MESSAGE; 439 dev->raw_io_interface = 1; 440 if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) { 441 /* driver supports TYPE1 (Tupelo) */ 442 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 443 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) { 444 /* driver supports TYPE2 (Denali) */ 445 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 446 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) || 447 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) { 448 /* driver doesn't TYPE3 and TYPE4 */ 449 /* switch to sync. mode */ 450 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 451 dev->sync_mode = 1; 452 } 453 } 454 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 455 (status[2] > dev->base_size)) { 456 aac_adapter_ioremap(dev, 0); 457 dev->base_size = status[2]; 458 if (aac_adapter_ioremap(dev, status[2])) { 459 /* remap failed, go back ... */ 460 dev->comm_interface = AAC_COMM_PRODUCER; 461 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 462 printk(KERN_WARNING 463 "aacraid: unable to map adapter.\n"); 464 return NULL; 465 } 466 } 467 } 468 } 469 dev->max_msix = 0; 470 dev->msi_enabled = 0; 471 dev->adapter_shutdown = 0; 472 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 473 0, 0, 0, 0, 0, 0, 474 status+0, status+1, status+2, status+3, status+4)) 475 && (status[0] == 0x00000001)) { 476 /* 477 * status[1] >> 16 maximum command size in KB 478 * status[1] & 0xFFFF maximum FIB size 479 * status[2] >> 16 maximum SG elements to driver 480 * status[2] & 0xFFFF maximum SG elements from driver 481 * status[3] & 0xFFFF maximum number FIBs outstanding 482 */ 483 host->max_sectors = (status[1] >> 16) << 1; 484 /* Multiple of 32 for PMC */ 485 dev->max_fib_size = status[1] & 0xFFE0; 486 host->sg_tablesize = status[2] >> 16; 487 dev->sg_tablesize = status[2] & 0xFFFF; 488 if (dev->pdev->device == PMC_DEVICE_S7 || 489 dev->pdev->device == PMC_DEVICE_S8 || 490 dev->pdev->device == PMC_DEVICE_S9) 491 host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) : 492 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB; 493 else 494 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 495 dev->max_num_aif = status[4] & 0xFFFF; 496 /* 497 * NOTE: 498 * All these overrides are based on a fixed internal 499 * knowledge and understanding of existing adapters, 500 * acbsize should be set with caution. 501 */ 502 if (acbsize == 512) { 503 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 504 dev->max_fib_size = 512; 505 dev->sg_tablesize = host->sg_tablesize 506 = (512 - sizeof(struct aac_fibhdr) 507 - sizeof(struct aac_write) + sizeof(struct sgentry)) 508 / sizeof(struct sgentry); 509 host->can_queue = AAC_NUM_IO_FIB; 510 } else if (acbsize == 2048) { 511 host->max_sectors = 512; 512 dev->max_fib_size = 2048; 513 host->sg_tablesize = 65; 514 dev->sg_tablesize = 81; 515 host->can_queue = 512 - AAC_NUM_MGT_FIB; 516 } else if (acbsize == 4096) { 517 host->max_sectors = 1024; 518 dev->max_fib_size = 4096; 519 host->sg_tablesize = 129; 520 dev->sg_tablesize = 166; 521 host->can_queue = 256 - AAC_NUM_MGT_FIB; 522 } else if (acbsize == 8192) { 523 host->max_sectors = 2048; 524 dev->max_fib_size = 8192; 525 host->sg_tablesize = 257; 526 dev->sg_tablesize = 337; 527 host->can_queue = 128 - AAC_NUM_MGT_FIB; 528 } else if (acbsize > 0) { 529 printk("Illegal acbsize=%d ignored\n", acbsize); 530 } 531 } 532 { 533 534 if (numacb > 0) { 535 if (numacb < host->can_queue) 536 host->can_queue = numacb; 537 else 538 printk("numacb=%d ignored\n", numacb); 539 } 540 } 541 542 if (host->can_queue > AAC_NUM_IO_FIB) 543 host->can_queue = AAC_NUM_IO_FIB; 544 545 if (dev->pdev->device == PMC_DEVICE_S6 || 546 dev->pdev->device == PMC_DEVICE_S7 || 547 dev->pdev->device == PMC_DEVICE_S8 || 548 dev->pdev->device == PMC_DEVICE_S9) 549 aac_define_int_mode(dev); 550 /* 551 * Ok now init the communication subsystem 552 */ 553 554 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 555 if (dev->queues == NULL) { 556 printk(KERN_ERR "Error could not allocate comm region.\n"); 557 return NULL; 558 } 559 560 if (aac_comm_init(dev)<0){ 561 kfree(dev->queues); 562 return NULL; 563 } 564 /* 565 * Initialize the list of fibs 566 */ 567 if (aac_fib_setup(dev) < 0) { 568 kfree(dev->queues); 569 return NULL; 570 } 571 572 INIT_LIST_HEAD(&dev->fib_list); 573 INIT_LIST_HEAD(&dev->sync_fib_list); 574 575 return dev; 576 } 577 578