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