drivers/scsi/aacraid/comminit.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  *      Adaptec AAC series RAID controller driver
   4  *      (c) Copyright 2001 Red Hat Inc.
   5  *
   6  * based on the old aacraid driver that is..
   7  * Adaptec aacraid device driver for Linux.
   8  *
   9  * Copyright (c) 2000-2010 Adaptec, Inc.
  10  *               2010-2015 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
  11  *               2016-2017 Microsemi Corp. (aacraid@microsemi.com)
  12  *
  13  * Module Name:
  14  *  comminit.c
  15  *
  16  * Abstract: This supports the initialization of the host adapter commuication interface.
  17  *    This is a platform dependent module for the pci cyclone board.
  18  */
  19
  20 #include <linux/kernel.h>
  21 #include <linux/init.h>
  22 #include <linux/types.h>
  23 #include <linux/pci.h>
  24 #include <linux/spinlock.h>
  25 #include <linux/slab.h>
  26 #include <linux/blkdev.h>
  27 #include <linux/delay.h>
  28 #include <linux/completion.h>
  29 #include <linux/mm.h>
  30 #include <scsi/scsi_host.h>
  31 #include <scsi/scsi_device.h>
  32 #include <scsi/scsi_cmnd.h>
  33
  34 #include "aacraid.h"
  35
  36 struct aac_common aac_config = {
  37         .irq_mod = 1
  38 };
  39
  40 static inline int aac_is_msix_mode(struct aac_dev *dev)
  41 {
  42         u32 status = 0;
  43
  44         if (aac_is_src(dev))
  45                 status = src_readl(dev, MUnit.OMR);
  46         return (status & AAC_INT_MODE_MSIX);
  47 }
  48
  49 static inline void aac_change_to_intx(struct aac_dev *dev)
  50 {
  51         aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
  52         aac_src_access_devreg(dev, AAC_ENABLE_INTX);
  53 }
  54
  55 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
  56 {
  57         unsigned char *base;
  58         unsigned long size, align;
  59         const unsigned long fibsize = dev->max_fib_size;
  60         const unsigned long printfbufsiz = 256;
  61         unsigned long host_rrq_size, aac_init_size;
  62         union aac_init *init;
  63         dma_addr_t phys;
  64         unsigned long aac_max_hostphysmempages;
  65
  66         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
  67                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
  68                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
  69                 !dev->sa_firmware)) {
  70                 host_rrq_size =
  71                         (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
  72                                 * sizeof(u32);
  73                 aac_init_size = sizeof(union aac_init);
  74         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
  75                 dev->sa_firmware) {
  76                 host_rrq_size = (dev->scsi_host_ptr->can_queue
  77                         + AAC_NUM_MGT_FIB) * sizeof(u32)  * AAC_MAX_MSIX;
  78                 aac_init_size = sizeof(union aac_init) +
  79                         (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
  80         } else {
  81                 host_rrq_size = 0;
  82                 aac_init_size = sizeof(union aac_init);
  83         }
  84         size = fibsize + aac_init_size + commsize + commalign +
  85                         printfbufsiz + host_rrq_size;
  86
  87         base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
  88         if (base == NULL) {
  89                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
  90                 return 0;
  91         }
  92
  93         dev->comm_addr = (void *)base;
  94         dev->comm_phys = phys;
  95         dev->comm_size = size;
  96
  97         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
  98             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
  99             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
 100                 dev->host_rrq = (u32 *)(base + fibsize);
 101                 dev->host_rrq_pa = phys + fibsize;
 102                 memset(dev->host_rrq, 0, host_rrq_size);
 103         }
 104
 105         dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
 106         dev->init_pa = phys + fibsize + host_rrq_size;
 107
 108         init = dev->init;
 109
 110         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
 111                 int i;
 112                 u64 addr;
 113
 114                 init->r8.init_struct_revision =
 115                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
 116                 init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 117                                         INITFLAGS_DRIVER_USES_UTC_TIME |
 118                                         INITFLAGS_DRIVER_SUPPORTS_PM);
 119                 init->r8.init_flags |=
 120                                 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
 121                 init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
 122                 init->r8.max_io_size =
 123                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 124                 init->r8.max_num_aif = init->r8.reserved1 =
 125                         init->r8.reserved2 = 0;
 126
 127                 for (i = 0; i < dev->max_msix; i++) {
 128                         addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
 129                                         sizeof(u32);
 130                         init->r8.rrq[i].host_addr_high = cpu_to_le32(
 131                                                 upper_32_bits(addr));
 132                         init->r8.rrq[i].host_addr_low = cpu_to_le32(
 133                                                 lower_32_bits(addr));
 134                         init->r8.rrq[i].msix_id = i;
 135                         init->r8.rrq[i].element_count = cpu_to_le16(
 136                                         (u16)dev->vector_cap);
 137                         init->r8.rrq[i].comp_thresh =
 138                                         init->r8.rrq[i].unused = 0;
 139                 }
 140
 141                 pr_warn("aacraid: Comm Interface type3 enabled\n");
 142         } else {
 143                 init->r7.init_struct_revision =
 144                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
 145                 if (dev->max_fib_size != sizeof(struct hw_fib))
 146                         init->r7.init_struct_revision =
 147                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
 148                 init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
 149                 init->r7.fsrev = cpu_to_le32(dev->fsrev);
 150
 151                 /*
 152                  *      Adapter Fibs are the first thing allocated so that they
 153                  *      start page aligned
 154                  */
 155                 dev->aif_base_va = (struct hw_fib *)base;
 156
 157                 init->r7.adapter_fibs_virtual_address = 0;
 158                 init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
 159                 init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
 160                 init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
 161
 162                 /*
 163                  * number of 4k pages of host physical memory. The aacraid fw
 164                  * needs this number to be less than 4gb worth of pages. New
 165                  * firmware doesn't have any issues with the mapping system, but
 166                  * older Firmware did, and had *troubles* dealing with the math
 167                  * overloading past 32 bits, thus we must limit this field.
 168                  */
 169                 aac_max_hostphysmempages =
 170                                 dma_get_required_mask(&dev->pdev->dev) >> 12;
 171                 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
 172                         init->r7.host_phys_mem_pages =
 173                                         cpu_to_le32(aac_max_hostphysmempages);
 174                 else
 175                         init->r7.host_phys_mem_pages =
 176                                         cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
 177
 178                 init->r7.init_flags =
 179                         cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
 180                         INITFLAGS_DRIVER_SUPPORTS_PM);
 181                 init->r7.max_io_commands =
 182                         cpu_to_le32(dev->scsi_host_ptr->can_queue +
 183                                         AAC_NUM_MGT_FIB);
 184                 init->r7.max_io_size =
 185                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 186                 init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
 187                 init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
 188
 189                 if (dev->comm_interface == AAC_COMM_MESSAGE) {
 190                         init->r7.init_flags |=
 191                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
 192                         pr_warn("aacraid: Comm Interface enabled\n");
 193                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
 194                         init->r7.init_struct_revision =
 195                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
 196                         init->r7.init_flags |=
 197                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 198                                 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
 199                                 INITFLAGS_FAST_JBOD_SUPPORTED);
 200                         init->r7.host_rrq_addr_high =
 201                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
 202                         init->r7.host_rrq_addr_low =
 203                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
 204                         pr_warn("aacraid: Comm Interface type1 enabled\n");
 205                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
 206                         init->r7.init_struct_revision =
 207                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
 208                         init->r7.init_flags |=
 209                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 210                                 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
 211                                 INITFLAGS_FAST_JBOD_SUPPORTED);
 212                         init->r7.host_rrq_addr_high =
 213                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
 214                         init->r7.host_rrq_addr_low =
 215                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
 216                         init->r7.no_of_msix_vectors =
 217                                 cpu_to_le32(dev->max_msix);
 218                         /* must be the COMM_PREFERRED_SETTINGS values */
 219                         pr_warn("aacraid: Comm Interface type2 enabled\n");
 220                 }
 221         }
 222
 223         /*
 224          * Increment the base address by the amount already used
 225          */
 226         base = base + fibsize + host_rrq_size + aac_init_size;
 227         phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
 228                         aac_init_size);
 229
 230         /*
 231          *      Align the beginning of Headers to commalign
 232          */
 233         align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
 234         base = base + align;
 235         phys = phys + align;
 236         /*
 237          *      Fill in addresses of the Comm Area Headers and Queues
 238          */
 239         *commaddr = base;
 240         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
 241                 init->r7.comm_header_address = cpu_to_le32((u32)phys);
 242         /*
 243          *      Increment the base address by the size of the CommArea
 244          */
 245         base = base + commsize;
 246         phys = phys + commsize;
 247         /*
 248          *       Place the Printf buffer area after the Fast I/O comm area.
 249          */
 250         dev->printfbuf = (void *)base;
 251         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
 252                 init->r7.printfbuf = cpu_to_le32(phys);
 253                 init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
 254         }
 255         memset(base, 0, printfbufsiz);
 256         return 1;
 257 }
 258
 259 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
 260 {
 261         atomic_set(&q->numpending, 0);
 262         q->dev = dev;
 263         init_waitqueue_head(&q->cmdready);
 264         INIT_LIST_HEAD(&q->cmdq);
 265         init_waitqueue_head(&q->qfull);
 266         spin_lock_init(&q->lockdata);
 267         q->lock = &q->lockdata;
 268         q->headers.producer = (__le32 *)mem;
 269         q->headers.consumer = (__le32 *)(mem+1);
 270         *(q->headers.producer) = cpu_to_le32(qsize);
 271         *(q->headers.consumer) = cpu_to_le32(qsize);
 272         q->entries = qsize;
 273 }
 274
 275 static bool wait_for_io_iter(struct scsi_cmnd *cmd, void *data, bool rsvd)
 276 {
 277         int *active = data;
 278
 279         if (cmd->SCp.phase == AAC_OWNER_FIRMWARE)
 280                 *active = *active + 1;
 281         return true;
 282 }
 283 static void aac_wait_for_io_completion(struct aac_dev *aac)
 284 {
 285         int i = 0, active;
 286
 287         for (i = 60; i; --i) {
 288
 289                 active = 0;
 290                 scsi_host_busy_iter(aac->scsi_host_ptr,
 291                                     wait_for_io_iter, &active);
 292                 /*
 293                  * We can exit If all the commands are complete
 294                  */
 295                 if (active == 0)
 296                         break;
 297                 dev_info(&aac->pdev->dev,
 298                          "Wait for %d commands to complete\n", active);
 299                 ssleep(1);
 300         }
 301         if (active)
 302                 dev_err(&aac->pdev->dev,
 303                         "%d outstanding commands during shutdown\n", active);
 304 }
 305
 306 /**
 307  *      aac_send_shutdown               -       shutdown an adapter
 308  *      @dev: Adapter to shutdown
 309  *
 310  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
 311  */
 312
 313 int aac_send_shutdown(struct aac_dev * dev)
 314 {
 315         struct fib * fibctx;
 316         struct aac_close *cmd;
 317         int status = 0;
 318
 319         if (aac_adapter_check_health(dev))
 320                 return status;
 321
 322         if (!dev->adapter_shutdown) {
 323                 mutex_lock(&dev->ioctl_mutex);
 324                 dev->adapter_shutdown = 1;
 325                 mutex_unlock(&dev->ioctl_mutex);
 326         }
 327
 328         aac_wait_for_io_completion(dev);
 329
 330         fibctx = aac_fib_alloc(dev);
 331         if (!fibctx)
 332                 return -ENOMEM;
 333         aac_fib_init(fibctx);
 334
 335         cmd = (struct aac_close *) fib_data(fibctx);
 336         cmd->command = cpu_to_le32(VM_CloseAll);
 337         cmd->cid = cpu_to_le32(0xfffffffe);
 338
 339         status = aac_fib_send(ContainerCommand,
 340                           fibctx,
 341                           sizeof(struct aac_close),
 342                           FsaNormal,
 343                           -2 /* Timeout silently */, 1,
 344                           NULL, NULL);
 345
 346         if (status >= 0)
 347                 aac_fib_complete(fibctx);
 348         /* FIB should be freed only after getting the response from the F/W */
 349         if (status != -ERESTARTSYS)
 350                 aac_fib_free(fibctx);
 351         if (aac_is_src(dev) &&
 352              dev->msi_enabled)
 353                 aac_set_intx_mode(dev);
 354         return status;
 355 }
 356
 357 /**
 358  *      aac_comm_init   -       Initialise FSA data structures
 359  *      @dev:   Adapter to initialise
 360  *
 361  *      Initializes the data structures that are required for the FSA commuication
 362  *      interface to operate.
 363  *      Returns
 364  *              1 - if we were able to init the commuication interface.
 365  *              0 - If there were errors initing. This is a fatal error.
 366  */
 367
 368 static int aac_comm_init(struct aac_dev * dev)
 369 {
 370         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
 371         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
 372         u32 *headers;
 373         struct aac_entry * queues;
 374         unsigned long size;
 375         struct aac_queue_block * comm = dev->queues;
 376         /*
 377          *      Now allocate and initialize the zone structures used as our
 378          *      pool of FIB context records.  The size of the zone is based
 379          *      on the system memory size.  We also initialize the mutex used
 380          *      to protect the zone.
 381          */
 382         spin_lock_init(&dev->fib_lock);
 383
 384         /*
 385          *      Allocate the physically contiguous space for the commuication
 386          *      queue headers.
 387          */
 388
 389         size = hdrsize + queuesize;
 390
 391         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
 392                 return -ENOMEM;
 393
 394         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
 395
 396         /* Adapter to Host normal priority Command queue */
 397         comm->queue[HostNormCmdQueue].base = queues;
 398         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
 399         queues += HOST_NORM_CMD_ENTRIES;
 400         headers += 2;
 401
 402         /* Adapter to Host high priority command queue */
 403         comm->queue[HostHighCmdQueue].base = queues;
 404         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
 405
 406         queues += HOST_HIGH_CMD_ENTRIES;
 407         headers +=2;
 408
 409         /* Host to adapter normal priority command queue */
 410         comm->queue[AdapNormCmdQueue].base = queues;
 411         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
 412
 413         queues += ADAP_NORM_CMD_ENTRIES;
 414         headers += 2;
 415
 416         /* host to adapter high priority command queue */
 417         comm->queue[AdapHighCmdQueue].base = queues;
 418         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
 419
 420         queues += ADAP_HIGH_CMD_ENTRIES;
 421         headers += 2;
 422
 423         /* adapter to host normal priority response queue */
 424         comm->queue[HostNormRespQueue].base = queues;
 425         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
 426         queues += HOST_NORM_RESP_ENTRIES;
 427         headers += 2;
 428
 429         /* adapter to host high priority response queue */
 430         comm->queue[HostHighRespQueue].base = queues;
 431         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
 432
 433         queues += HOST_HIGH_RESP_ENTRIES;
 434         headers += 2;
 435
 436         /* host to adapter normal priority response queue */
 437         comm->queue[AdapNormRespQueue].base = queues;
 438         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
 439
 440         queues += ADAP_NORM_RESP_ENTRIES;
 441         headers += 2;
 442
 443         /* host to adapter high priority response queue */
 444         comm->queue[AdapHighRespQueue].base = queues;
 445         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
 446
 447         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
 448         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
 449         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
 450         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
 451
 452         return 0;
 453 }
 454
 455 void aac_define_int_mode(struct aac_dev *dev)
 456 {
 457         int i, msi_count, min_msix;
 458
 459         msi_count = i = 0;
 460         /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
 461         if (dev->max_msix == 0 ||
 462             dev->pdev->device == PMC_DEVICE_S6 ||
 463             dev->sync_mode) {
 464                 dev->max_msix = 1;
 465                 dev->vector_cap =
 466                         dev->scsi_host_ptr->can_queue +
 467                         AAC_NUM_MGT_FIB;
 468                 return;
 469         }
 470
 471         /* Don't bother allocating more MSI-X vectors than cpus */
 472         msi_count = min(dev->max_msix,
 473                 (unsigned int)num_online_cpus());
 474
 475         dev->max_msix = msi_count;
 476
 477         if (msi_count > AAC_MAX_MSIX)
 478                 msi_count = AAC_MAX_MSIX;
 479
 480         if (msi_count > 1 &&
 481             pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
 482                 min_msix = 2;
 483                 i = pci_alloc_irq_vectors(dev->pdev,
 484                                           min_msix, msi_count,
 485                                           PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
 486                 if (i > 0) {
 487                         dev->msi_enabled = 1;
 488                         msi_count = i;
 489                 } else {
 490                         dev->msi_enabled = 0;
 491                         dev_err(&dev->pdev->dev,
 492                         "MSIX not supported!! Will try INTX 0x%x.\n", i);
 493                 }
 494         }
 495
 496         if (!dev->msi_enabled)
 497                 dev->max_msix = msi_count = 1;
 498         else {
 499                 if (dev->max_msix > msi_count)
 500                         dev->max_msix = msi_count;
 501         }
 502         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
 503                 dev->vector_cap = dev->scsi_host_ptr->can_queue +
 504                                 AAC_NUM_MGT_FIB;
 505         else
 506                 dev->vector_cap = (dev->scsi_host_ptr->can_queue +
 507                                 AAC_NUM_MGT_FIB) / msi_count;
 508
 509 }
 510 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 511 {
 512         u32 status[5];
 513         struct Scsi_Host * host = dev->scsi_host_ptr;
 514         extern int aac_sync_mode;
 515
 516         /*
 517          *      Check the preferred comm settings, defaults from template.
 518          */
 519         dev->management_fib_count = 0;
 520         spin_lock_init(&dev->manage_lock);
 521         spin_lock_init(&dev->sync_lock);
 522         spin_lock_init(&dev->iq_lock);
 523         dev->max_fib_size = sizeof(struct hw_fib);
 524         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 525                 - sizeof(struct aac_fibhdr)
 526                 - sizeof(struct aac_write) + sizeof(struct sgentry))
 527                         / sizeof(struct sgentry);
 528         dev->comm_interface = AAC_COMM_PRODUCER;
 529         dev->raw_io_interface = dev->raw_io_64 = 0;
 530
 531
 532         /*
 533          * Enable INTX mode, if not done already Enabled
 534          */
 535         if (aac_is_msix_mode(dev)) {
 536                 aac_change_to_intx(dev);
 537                 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
 538         }
 539
 540         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
 541                 0, 0, 0, 0, 0, 0,
 542                 status+0, status+1, status+2, status+3, status+4)) &&
 543                 (status[0] == 0x00000001)) {
 544                 dev->doorbell_mask = status[3];
 545                 if (status[1] & AAC_OPT_NEW_COMM_64)
 546                         dev->raw_io_64 = 1;
 547                 dev->sync_mode = aac_sync_mode;
 548                 if (dev->a_ops.adapter_comm &&
 549                     (status[1] & AAC_OPT_NEW_COMM)) {
 550                         dev->comm_interface = AAC_COMM_MESSAGE;
 551                         dev->raw_io_interface = 1;
 552                         if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
 553                                 /* driver supports TYPE1 (Tupelo) */
 554                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
 555                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
 556                                 /* driver supports TYPE2 (Denali, Yosemite) */
 557                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 558                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
 559                                 /* driver supports TYPE3 (Yosemite, Thor) */
 560                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
 561                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
 562                                 /* not supported TYPE - switch to sync. mode */
 563                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 564                                 dev->sync_mode = 1;
 565                         }
 566                 }
 567                 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
 568                         (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
 569                         dev->sa_firmware = 1;
 570                 else
 571                         dev->sa_firmware = 0;
 572
 573                 if (status[4] & le32_to_cpu(AAC_EXTOPT_SOFT_RESET))
 574                         dev->soft_reset_support = 1;
 575                 else
 576                         dev->soft_reset_support = 0;
 577
 578                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
 579                     (status[2] > dev->base_size)) {
 580                         aac_adapter_ioremap(dev, 0);
 581                         dev->base_size = status[2];
 582                         if (aac_adapter_ioremap(dev, status[2])) {
 583                                 /* remap failed, go back ... */
 584                                 dev->comm_interface = AAC_COMM_PRODUCER;
 585                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
 586                                         printk(KERN_WARNING
 587                                           "aacraid: unable to map adapter.\n");
 588                                         return NULL;
 589                                 }
 590                         }
 591                 }
 592         }
 593         dev->max_msix = 0;
 594         dev->msi_enabled = 0;
 595         dev->adapter_shutdown = 0;
 596         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 597           0, 0, 0, 0, 0, 0,
 598           status+0, status+1, status+2, status+3, status+4))
 599          && (status[0] == 0x00000001)) {
 600                 /*
 601                  *      status[1] >> 16         maximum command size in KB
 602                  *      status[1] & 0xFFFF      maximum FIB size
 603                  *      status[2] >> 16         maximum SG elements to driver
 604                  *      status[2] & 0xFFFF      maximum SG elements from driver
 605                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
 606                  */
 607                 host->max_sectors = (status[1] >> 16) << 1;
 608                 /* Multiple of 32 for PMC */
 609                 dev->max_fib_size = status[1] & 0xFFE0;
 610                 host->sg_tablesize = status[2] >> 16;
 611                 dev->sg_tablesize = status[2] & 0xFFFF;
 612                 if (aac_is_src(dev)) {
 613                         if (host->can_queue > (status[3] >> 16) -
 614                                         AAC_NUM_MGT_FIB)
 615                                 host->can_queue = (status[3] >> 16) -
 616                                         AAC_NUM_MGT_FIB;
 617                 } else if (host->can_queue > (status[3] & 0xFFFF) -
 618                                 AAC_NUM_MGT_FIB)
 619                         host->can_queue = (status[3] & 0xFFFF) -
 620                                 AAC_NUM_MGT_FIB;
 621
 622                 dev->max_num_aif = status[4] & 0xFFFF;
 623         }
 624         if (numacb > 0) {
 625                 if (numacb < host->can_queue)
 626                         host->can_queue = numacb;
 627                 else
 628                         pr_warn("numacb=%d ignored\n", numacb);
 629         }
 630
 631         if (aac_is_src(dev))
 632                 aac_define_int_mode(dev);
 633         /*
 634          *      Ok now init the communication subsystem
 635          */
 636
 637         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
 638         if (dev->queues == NULL) {
 639                 printk(KERN_ERR "Error could not allocate comm region.\n");
 640                 return NULL;
 641         }
 642
 643         if (aac_comm_init(dev)<0){
 644                 kfree(dev->queues);
 645                 return NULL;
 646         }
 647         /*
 648          *      Initialize the list of fibs
 649          */
 650         if (aac_fib_setup(dev) < 0) {
 651                 kfree(dev->queues);
 652                 return NULL;
 653         }
 654
 655         INIT_LIST_HEAD(&dev->fib_list);
 656         INIT_LIST_HEAD(&dev->sync_fib_list);
 657
 658         return dev;
 659 }
 660