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 static void aac_define_int_mode(struct aac_dev *dev); 47 48 struct aac_common aac_config = { 49 .irq_mod = 1 50 }; 51 52 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign) 53 { 54 unsigned char *base; 55 unsigned long size, align; 56 const unsigned long fibsize = dev->max_fib_size; 57 const unsigned long printfbufsiz = 256; 58 unsigned long host_rrq_size = 0; 59 struct aac_init *init; 60 dma_addr_t phys; 61 unsigned long aac_max_hostphysmempages; 62 63 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 64 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) 65 host_rrq_size = (dev->scsi_host_ptr->can_queue 66 + AAC_NUM_MGT_FIB) * sizeof(u32); 67 size = fibsize + sizeof(struct aac_init) + commsize + 68 commalign + printfbufsiz + host_rrq_size; 69 70 base = pci_alloc_consistent(dev->pdev, size, &phys); 71 72 if(base == NULL) 73 { 74 printk(KERN_ERR "aacraid: unable to create mapping.\n"); 75 return 0; 76 } 77 dev->comm_addr = (void *)base; 78 dev->comm_phys = phys; 79 dev->comm_size = size; 80 81 if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 || 82 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 83 dev->host_rrq = (u32 *)(base + fibsize); 84 dev->host_rrq_pa = phys + fibsize; 85 memset(dev->host_rrq, 0, host_rrq_size); 86 } 87 88 dev->init = (struct aac_init *)(base + fibsize + host_rrq_size); 89 dev->init_pa = phys + fibsize + host_rrq_size; 90 91 init = dev->init; 92 93 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION); 94 if (dev->max_fib_size != sizeof(struct hw_fib)) 95 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4); 96 init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION); 97 init->fsrev = cpu_to_le32(dev->fsrev); 98 99 /* 100 * Adapter Fibs are the first thing allocated so that they 101 * start page aligned 102 */ 103 dev->aif_base_va = (struct hw_fib *)base; 104 105 init->AdapterFibsVirtualAddress = 0; 106 init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys); 107 init->AdapterFibsSize = cpu_to_le32(fibsize); 108 init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib)); 109 /* 110 * number of 4k pages of host physical memory. The aacraid fw needs 111 * this number to be less than 4gb worth of pages. New firmware doesn't 112 * have any issues with the mapping system, but older Firmware did, and 113 * had *troubles* dealing with the math overloading past 32 bits, thus 114 * we must limit this field. 115 */ 116 aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12; 117 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES) 118 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages); 119 else 120 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES); 121 122 init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME | 123 INITFLAGS_DRIVER_SUPPORTS_PM); 124 init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); 125 init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9); 126 init->MaxFibSize = cpu_to_le32(dev->max_fib_size); 127 init->MaxNumAif = cpu_to_le32(dev->max_num_aif); 128 129 if (dev->comm_interface == AAC_COMM_MESSAGE) { 130 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED); 131 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n")); 132 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) { 133 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6); 134 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 135 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED); 136 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32)); 137 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff)); 138 dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n")); 139 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) { 140 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7); 141 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED | 142 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED); 143 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32)); 144 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff)); 145 /* number of MSI-X */ 146 init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix); 147 dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n")); 148 } 149 150 /* 151 * Increment the base address by the amount already used 152 */ 153 base = base + fibsize + host_rrq_size + sizeof(struct aac_init); 154 phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size + 155 sizeof(struct aac_init)); 156 157 /* 158 * Align the beginning of Headers to commalign 159 */ 160 align = (commalign - ((uintptr_t)(base) & (commalign - 1))); 161 base = base + align; 162 phys = phys + align; 163 /* 164 * Fill in addresses of the Comm Area Headers and Queues 165 */ 166 *commaddr = base; 167 init->CommHeaderAddress = cpu_to_le32((u32)phys); 168 /* 169 * Increment the base address by the size of the CommArea 170 */ 171 base = base + commsize; 172 phys = phys + commsize; 173 /* 174 * Place the Printf buffer area after the Fast I/O comm area. 175 */ 176 dev->printfbuf = (void *)base; 177 init->printfbuf = cpu_to_le32(phys); 178 init->printfbufsiz = cpu_to_le32(printfbufsiz); 179 memset(base, 0, printfbufsiz); 180 return 1; 181 } 182 183 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize) 184 { 185 atomic_set(&q->numpending, 0); 186 q->dev = dev; 187 init_waitqueue_head(&q->cmdready); 188 INIT_LIST_HEAD(&q->cmdq); 189 init_waitqueue_head(&q->qfull); 190 spin_lock_init(&q->lockdata); 191 q->lock = &q->lockdata; 192 q->headers.producer = (__le32 *)mem; 193 q->headers.consumer = (__le32 *)(mem+1); 194 *(q->headers.producer) = cpu_to_le32(qsize); 195 *(q->headers.consumer) = cpu_to_le32(qsize); 196 q->entries = qsize; 197 } 198 199 /** 200 * aac_send_shutdown - shutdown an adapter 201 * @dev: Adapter to shutdown 202 * 203 * This routine will send a VM_CloseAll (shutdown) request to the adapter. 204 */ 205 206 int aac_send_shutdown(struct aac_dev * dev) 207 { 208 struct fib * fibctx; 209 struct aac_close *cmd; 210 int status; 211 212 fibctx = aac_fib_alloc(dev); 213 if (!fibctx) 214 return -ENOMEM; 215 aac_fib_init(fibctx); 216 217 cmd = (struct aac_close *) fib_data(fibctx); 218 219 cmd->command = cpu_to_le32(VM_CloseAll); 220 cmd->cid = cpu_to_le32(0xfffffffe); 221 222 status = aac_fib_send(ContainerCommand, 223 fibctx, 224 sizeof(struct aac_close), 225 FsaNormal, 226 -2 /* Timeout silently */, 1, 227 NULL, NULL); 228 229 if (status >= 0) 230 aac_fib_complete(fibctx); 231 /* FIB should be freed only after getting the response from the F/W */ 232 if (status != -ERESTARTSYS) 233 aac_fib_free(fibctx); 234 dev->adapter_shutdown = 1; 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 struct aac_dev *aac_init_adapter(struct aac_dev *dev) 342 { 343 u32 status[5]; 344 struct Scsi_Host * host = dev->scsi_host_ptr; 345 extern int aac_sync_mode; 346 347 /* 348 * Check the preferred comm settings, defaults from template. 349 */ 350 dev->management_fib_count = 0; 351 spin_lock_init(&dev->manage_lock); 352 spin_lock_init(&dev->sync_lock); 353 dev->max_fib_size = sizeof(struct hw_fib); 354 dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size 355 - sizeof(struct aac_fibhdr) 356 - sizeof(struct aac_write) + sizeof(struct sgentry)) 357 / sizeof(struct sgentry); 358 dev->comm_interface = AAC_COMM_PRODUCER; 359 dev->raw_io_interface = dev->raw_io_64 = 0; 360 361 if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES, 362 0, 0, 0, 0, 0, 0, 363 status+0, status+1, status+2, status+3, NULL)) && 364 (status[0] == 0x00000001)) { 365 dev->doorbell_mask = status[3]; 366 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64)) 367 dev->raw_io_64 = 1; 368 dev->sync_mode = aac_sync_mode; 369 if (dev->a_ops.adapter_comm && 370 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) { 371 dev->comm_interface = AAC_COMM_MESSAGE; 372 dev->raw_io_interface = 1; 373 if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) { 374 /* driver supports TYPE1 (Tupelo) */ 375 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1; 376 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) { 377 /* driver supports TYPE2 (Denali) */ 378 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 379 } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) || 380 (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) { 381 /* driver doesn't TYPE3 and TYPE4 */ 382 /* switch to sync. mode */ 383 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2; 384 dev->sync_mode = 1; 385 } 386 } 387 if ((dev->comm_interface == AAC_COMM_MESSAGE) && 388 (status[2] > dev->base_size)) { 389 aac_adapter_ioremap(dev, 0); 390 dev->base_size = status[2]; 391 if (aac_adapter_ioremap(dev, status[2])) { 392 /* remap failed, go back ... */ 393 dev->comm_interface = AAC_COMM_PRODUCER; 394 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) { 395 printk(KERN_WARNING 396 "aacraid: unable to map adapter.\n"); 397 return NULL; 398 } 399 } 400 } 401 } 402 dev->max_msix = 0; 403 dev->msi_enabled = 0; 404 dev->adapter_shutdown = 0; 405 if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS, 406 0, 0, 0, 0, 0, 0, 407 status+0, status+1, status+2, status+3, status+4)) 408 && (status[0] == 0x00000001)) { 409 /* 410 * status[1] >> 16 maximum command size in KB 411 * status[1] & 0xFFFF maximum FIB size 412 * status[2] >> 16 maximum SG elements to driver 413 * status[2] & 0xFFFF maximum SG elements from driver 414 * status[3] & 0xFFFF maximum number FIBs outstanding 415 */ 416 host->max_sectors = (status[1] >> 16) << 1; 417 /* Multiple of 32 for PMC */ 418 dev->max_fib_size = status[1] & 0xFFE0; 419 host->sg_tablesize = status[2] >> 16; 420 dev->sg_tablesize = status[2] & 0xFFFF; 421 if (dev->pdev->device == PMC_DEVICE_S7 || 422 dev->pdev->device == PMC_DEVICE_S8 || 423 dev->pdev->device == PMC_DEVICE_S9) 424 host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) : 425 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB; 426 else 427 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB; 428 dev->max_num_aif = status[4] & 0xFFFF; 429 /* 430 * NOTE: 431 * All these overrides are based on a fixed internal 432 * knowledge and understanding of existing adapters, 433 * acbsize should be set with caution. 434 */ 435 if (acbsize == 512) { 436 host->max_sectors = AAC_MAX_32BIT_SGBCOUNT; 437 dev->max_fib_size = 512; 438 dev->sg_tablesize = host->sg_tablesize 439 = (512 - sizeof(struct aac_fibhdr) 440 - sizeof(struct aac_write) + sizeof(struct sgentry)) 441 / sizeof(struct sgentry); 442 host->can_queue = AAC_NUM_IO_FIB; 443 } else if (acbsize == 2048) { 444 host->max_sectors = 512; 445 dev->max_fib_size = 2048; 446 host->sg_tablesize = 65; 447 dev->sg_tablesize = 81; 448 host->can_queue = 512 - AAC_NUM_MGT_FIB; 449 } else if (acbsize == 4096) { 450 host->max_sectors = 1024; 451 dev->max_fib_size = 4096; 452 host->sg_tablesize = 129; 453 dev->sg_tablesize = 166; 454 host->can_queue = 256 - AAC_NUM_MGT_FIB; 455 } else if (acbsize == 8192) { 456 host->max_sectors = 2048; 457 dev->max_fib_size = 8192; 458 host->sg_tablesize = 257; 459 dev->sg_tablesize = 337; 460 host->can_queue = 128 - AAC_NUM_MGT_FIB; 461 } else if (acbsize > 0) { 462 printk("Illegal acbsize=%d ignored\n", acbsize); 463 } 464 } 465 { 466 467 if (numacb > 0) { 468 if (numacb < host->can_queue) 469 host->can_queue = numacb; 470 else 471 printk("numacb=%d ignored\n", numacb); 472 } 473 } 474 475 if (host->can_queue > AAC_NUM_IO_FIB) 476 host->can_queue = AAC_NUM_IO_FIB; 477 478 if (dev->pdev->device == PMC_DEVICE_S6 || 479 dev->pdev->device == PMC_DEVICE_S7 || 480 dev->pdev->device == PMC_DEVICE_S8 || 481 dev->pdev->device == PMC_DEVICE_S9) 482 aac_define_int_mode(dev); 483 /* 484 * Ok now init the communication subsystem 485 */ 486 487 dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL); 488 if (dev->queues == NULL) { 489 printk(KERN_ERR "Error could not allocate comm region.\n"); 490 return NULL; 491 } 492 493 if (aac_comm_init(dev)<0){ 494 kfree(dev->queues); 495 return NULL; 496 } 497 /* 498 * Initialize the list of fibs 499 */ 500 if (aac_fib_setup(dev) < 0) { 501 kfree(dev->queues); 502 return NULL; 503 } 504 505 INIT_LIST_HEAD(&dev->fib_list); 506 INIT_LIST_HEAD(&dev->sync_fib_list); 507 508 return dev; 509 } 510 511 static void aac_define_int_mode(struct aac_dev *dev) 512 { 513 514 int i, msi_count; 515 516 msi_count = i = 0; 517 /* max. vectors from GET_COMM_PREFERRED_SETTINGS */ 518 if (dev->max_msix == 0 || 519 dev->pdev->device == PMC_DEVICE_S6 || 520 dev->sync_mode) { 521 dev->max_msix = 1; 522 dev->vector_cap = 523 dev->scsi_host_ptr->can_queue + 524 AAC_NUM_MGT_FIB; 525 return; 526 } 527 528 msi_count = min(dev->max_msix, 529 (unsigned int)num_online_cpus()); 530 531 dev->max_msix = msi_count; 532 533 if (msi_count > AAC_MAX_MSIX) 534 msi_count = AAC_MAX_MSIX; 535 536 for (i = 0; i < msi_count; i++) 537 dev->msixentry[i].entry = i; 538 539 if (msi_count > 1 && 540 pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) { 541 i = pci_enable_msix(dev->pdev, 542 dev->msixentry, 543 msi_count); 544 /* Check how many MSIX vectors are allocated */ 545 if (i >= 0) { 546 dev->msi_enabled = 1; 547 if (i) { 548 msi_count = i; 549 if (pci_enable_msix(dev->pdev, 550 dev->msixentry, 551 msi_count)) { 552 dev->msi_enabled = 0; 553 printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", 554 dev->name, dev->id, i); 555 } 556 } 557 } else { 558 dev->msi_enabled = 0; 559 printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n", 560 dev->name, dev->id, i); 561 } 562 } 563 564 if (!dev->msi_enabled) { 565 msi_count = 1; 566 i = pci_enable_msi(dev->pdev); 567 568 if (!i) { 569 dev->msi_enabled = 1; 570 dev->msi = 1; 571 } else { 572 printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n", 573 dev->name, dev->id, i); 574 } 575 } 576 577 if (!dev->msi_enabled) 578 dev->max_msix = msi_count = 1; 579 else { 580 if (dev->max_msix > msi_count) 581 dev->max_msix = msi_count; 582 } 583 dev->vector_cap = 584 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) / 585 msi_count; 586 } 587