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 mutex_lock(&dev->ioctl_mutex); 216 dev->adapter_shutdown = 1; 217 mutex_unlock(&dev->ioctl_mutex); 218 219 cmd = (struct aac_close *) fib_data(fibctx); 220 cmd->command = cpu_to_le32(VM_CloseAll); 221 cmd->cid = cpu_to_le32(0xfffffffe); 222 223 status = aac_fib_send(ContainerCommand, 224 fibctx, 225 sizeof(struct aac_close), 226 FsaNormal, 227 -2 /* Timeout silently */, 1, 228 NULL, NULL); 229 230 if (status >= 0) 231 aac_fib_complete(fibctx); 232 /* FIB should be freed only after getting the response from the F/W */ 233 if (status != -ERESTARTSYS) 234 aac_fib_free(fibctx); 235 if ((dev->pdev->device == PMC_DEVICE_S7 || 236 dev->pdev->device == PMC_DEVICE_S8 || 237 dev->pdev->device == PMC_DEVICE_S9) && 238 dev->msi_enabled) 239 aac_src_access_devreg(dev, AAC_ENABLE_INTX); 240 return status; 241 } 242 243 /** 244 * aac_comm_init - Initialise FSA data structures 245 * @dev: Adapter to initialise 246 * 247 * Initializes the data structures that are required for the FSA commuication 248 * interface to operate. 249 * Returns 250 * 1 - if we were able to init the commuication interface. 251 * 0 - If there were errors initing. This is a fatal error. 252 */ 253 254 static int aac_comm_init(struct aac_dev * dev) 255 { 256 unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2; 257 unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES; 258 u32 *headers; 259 struct aac_entry * queues; 260 unsigned long size; 261 struct aac_queue_block * comm = dev->queues; 262 /* 263 * Now allocate and initialize the zone structures used as our 264 * pool of FIB context records. The size of the zone is based 265 * on the system memory size. We also initialize the mutex used 266 * to protect the zone. 267 */ 268 spin_lock_init(&dev->fib_lock); 269 270 /* 271 * Allocate the physically contiguous space for the commuication 272 * queue headers. 273 */ 274 275 size = hdrsize + queuesize; 276 277 if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT)) 278 return -ENOMEM; 279 280 queues = (struct aac_entry *)(((ulong)headers) + hdrsize); 281 282 /* Adapter to Host normal priority Command queue */ 283 comm->queue[HostNormCmdQueue].base = queues; 284 aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES); 285 queues += HOST_NORM_CMD_ENTRIES; 286 headers += 2; 287 288 /* Adapter to Host high priority command queue */ 289 comm->queue[HostHighCmdQueue].base = queues; 290 aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES); 291 292 queues += HOST_HIGH_CMD_ENTRIES; 293 headers +=2; 294 295 /* Host to adapter normal priority command queue */ 296 comm->queue[AdapNormCmdQueue].base = queues; 297 aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES); 298 299 queues += ADAP_NORM_CMD_ENTRIES; 300 headers += 2; 301 302 /* host to adapter high priority command queue */ 303 comm->queue[AdapHighCmdQueue].base = queues; 304 aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES); 305 306 queues += ADAP_HIGH_CMD_ENTRIES; 307 headers += 2; 308 309 /* adapter to host normal priority response queue */ 310 comm->queue[HostNormRespQueue].base = queues; 311 aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES); 312 queues += HOST_NORM_RESP_ENTRIES; 313 headers += 2; 314 315 /* adapter to host high priority response queue */ 316 comm->queue[HostHighRespQueue].base = queues; 317 aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES); 318 319 queues += HOST_HIGH_RESP_ENTRIES; 320 headers += 2; 321 322 /* host to adapter normal priority response queue */ 323 comm->queue[AdapNormRespQueue].base = queues; 324 aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES); 325 326 queues += ADAP_NORM_RESP_ENTRIES; 327 headers += 2; 328 329 /* host to adapter high priority response queue */ 330 comm->queue[AdapHighRespQueue].base = queues; 331 aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES); 332 333 comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock; 334 comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock; 335 comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock; 336 comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock; 337 338 return 0; 339 } 340 341 void aac_define_int_mode(struct aac_dev *dev) 342 { 343 int i, msi_count, min_msix; 344 345 msi_count = i = 0; 346 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ 347 if (dev->max_msix == 0 || 348 dev->pdev->device == PMC_DEVICE_S6 || 349 dev->sync_mode) { 350 dev->max_msix = 1; 351 dev->vector_cap = 352 dev->scsi_host_ptr->can_queue + 353 AAC_NUM_MGT_FIB; 354 return; 355 } 356 357 /* Don't bother allocating more MSI-X vectors than cpus */ 358 msi_count = min(dev->max_msix, 359 (unsigned int)num_online_cpus()); 360 361 dev->max_msix = msi_count; 362 363 if (msi_count > AAC_MAX_MSIX) 364 msi_count = AAC_MAX_MSIX; 365 366 for (i = 0; i < msi_count; i++) 367 dev->msixentry[i].entry = i; 368 369 if (msi_count > 1 && 370 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { 371 min_msix = 2; 372 i = pci_enable_msix_range(dev->pdev, 373 dev->msixentry, 374 min_msix, 375 msi_count); 376 if (i > 0) { 377 dev->msi_enabled = 1; 378 msi_count = i; 379 } else { 380 dev->msi_enabled = 0; 381 printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", 382 dev->name, dev->id, i); 383 } 384 } 385 386 if (!dev->msi_enabled) { 387 msi_count = 1; 388 i = pci_enable_msi(dev->pdev); 389 390 if (!i) { 391 dev->msi_enabled = 1; 392 dev->msi = 1; 393 } else { 394 printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n", 395 dev->name, dev->id, i); 396 } 397 } 398 399 if (!dev->msi_enabled) 400 dev->max_msix = msi_count = 1; 401 else { 402 if (dev->max_msix > msi_count) 403 dev->max_msix = msi_count; 404 } 405 dev->vector_cap = 406 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) / 407 msi_count; 408 } 409 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 410 { 411 u32 status[5]; 412 struct Scsi_Host * host = dev->scsi_host_ptr; 413 extern int aac_sync_mode; 414 415 /* 416 * Check the preferred comm settings, defaults from template. 417 */ 418 dev->management_fib_count = 0; 419 spin_lock_init(&dev->manage_lock); 420 spin_lock_init(&dev->sync_lock); 421 spin_lock_init(&dev->iq_lock); 422 dev->max_fib_size = sizeof(struct hw_fib); 423 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 424 - sizeof(struct aac_fibhdr) 425 - sizeof(struct aac_write) + sizeof(struct sgentry)) 426 / sizeof(struct sgentry); 427 dev->comm_interface = AAC_COMM_PRODUCER; 428 dev->raw_io_interface = dev->raw_io_64 = 0; 429 430 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 431 0, 0, 0, 0, 0, 0, 432 status+0, status+1, status+2, status+3, NULL)) && 433 (status[0] == 0x00000001)) { 434 dev->doorbell_mask = status[3]; 435 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 436 dev->raw_io_64 = 1; 437 dev->sync_mode = aac_sync_mode; 438 if (dev->a_ops.adapter_comm && 439 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) { 440 dev->comm_interface = AAC_COMM_MESSAGE; 441 dev->raw_io_interface = 1; 442 if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) { 443 /* driver supports TYPE1 (Tupelo) */ 444 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 445 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) { 446 /* driver supports TYPE2 (Denali) */ 447 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 448 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) || 449 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) { 450 /* driver doesn't TYPE3 and TYPE4 */ 451 /* switch to sync. mode */ 452 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 453 dev->sync_mode = 1; 454 } 455 } 456 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 457 (status[2] > dev->base_size)) { 458 aac_adapter_ioremap(dev, 0); 459 dev->base_size = status[2]; 460 if (aac_adapter_ioremap(dev, status[2])) { 461 /* remap failed, go back ... */ 462 dev->comm_interface = AAC_COMM_PRODUCER; 463 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 464 printk(KERN_WARNING 465 "aacraid: unable to map adapter.\n"); 466 return NULL; 467 } 468 } 469 } 470 } 471 dev->max_msix = 0; 472 dev->msi_enabled = 0; 473 dev->adapter_shutdown = 0; 474 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 475 0, 0, 0, 0, 0, 0, 476 status+0, status+1, status+2, status+3, status+4)) 477 && (status[0] == 0x00000001)) { 478 /* 479 * status[1] >> 16 maximum command size in KB 480 * status[1] & 0xFFFF maximum FIB size 481 * status[2] >> 16 maximum SG elements to driver 482 * status[2] & 0xFFFF maximum SG elements from driver 483 * status[3] & 0xFFFF maximum number FIBs outstanding 484 */ 485 host->max_sectors = (status[1] >> 16) << 1; 486 /* Multiple of 32 for PMC */ 487 dev->max_fib_size = status[1] & 0xFFE0; 488 host->sg_tablesize = status[2] >> 16; 489 dev->sg_tablesize = status[2] & 0xFFFF; 490 if (dev->pdev->device == PMC_DEVICE_S7 || 491 dev->pdev->device == PMC_DEVICE_S8 || 492 dev->pdev->device == PMC_DEVICE_S9) 493 host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) : 494 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB; 495 else 496 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 497 dev->max_num_aif = status[4] & 0xFFFF; 498 /* 499 * NOTE: 500 * All these overrides are based on a fixed internal 501 * knowledge and understanding of existing adapters, 502 * acbsize should be set with caution. 503 */ 504 if (acbsize == 512) { 505 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 506 dev->max_fib_size = 512; 507 dev->sg_tablesize = host->sg_tablesize 508 = (512 - sizeof(struct aac_fibhdr) 509 - sizeof(struct aac_write) + sizeof(struct sgentry)) 510 / sizeof(struct sgentry); 511 host->can_queue = AAC_NUM_IO_FIB; 512 } else if (acbsize == 2048) { 513 host->max_sectors = 512; 514 dev->max_fib_size = 2048; 515 host->sg_tablesize = 65; 516 dev->sg_tablesize = 81; 517 host->can_queue = 512 - AAC_NUM_MGT_FIB; 518 } else if (acbsize == 4096) { 519 host->max_sectors = 1024; 520 dev->max_fib_size = 4096; 521 host->sg_tablesize = 129; 522 dev->sg_tablesize = 166; 523 host->can_queue = 256 - AAC_NUM_MGT_FIB; 524 } else if (acbsize == 8192) { 525 host->max_sectors = 2048; 526 dev->max_fib_size = 8192; 527 host->sg_tablesize = 257; 528 dev->sg_tablesize = 337; 529 host->can_queue = 128 - AAC_NUM_MGT_FIB; 530 } else if (acbsize > 0) { 531 printk("Illegal acbsize=%d ignored\n", acbsize); 532 } 533 } 534 { 535 536 if (numacb > 0) { 537 if (numacb < host->can_queue) 538 host->can_queue = numacb; 539 else 540 printk("numacb=%d ignored\n", numacb); 541 } 542 } 543 544 if (host->can_queue > AAC_NUM_IO_FIB) 545 host->can_queue = AAC_NUM_IO_FIB; 546 547 if (dev->pdev->device == PMC_DEVICE_S6 || 548 dev->pdev->device == PMC_DEVICE_S7 || 549 dev->pdev->device == PMC_DEVICE_S8 || 550 dev->pdev->device == PMC_DEVICE_S9) 551 aac_define_int_mode(dev); 552 /* 553 * Ok now init the communication subsystem 554 */ 555 556 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 557 if (dev->queues == NULL) { 558 printk(KERN_ERR "Error could not allocate comm region.\n"); 559 return NULL; 560 } 561 562 if (aac_comm_init(dev)<0){ 563 kfree(dev->queues); 564 return NULL; 565 } 566 /* 567 * Initialize the list of fibs 568 */ 569 if (aac_fib_setup(dev) < 0) { 570 kfree(dev->queues); 571 return NULL; 572 } 573 574 INIT_LIST_HEAD(&dev->fib_list); 575 INIT_LIST_HEAD(&dev->sync_fib_list); 576 577 return dev; 578 } 579 580