drivers/scsi/aacraid/comminit.c

   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