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