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 #include <scsi/scsi_device.h>
  46 #include <scsi/scsi_cmnd.h>
  47
  48 #include "aacraid.h"
  49
  50 struct aac_common aac_config = {
  51         .irq_mod = 1
  52 };
  53
  54 static inline int aac_is_msix_mode(struct aac_dev *dev)
  55 {
  56         u32 status = 0;
  57
  58         if (aac_is_src(dev))
  59                 status = src_readl(dev, MUnit.OMR);
  60         return (status & AAC_INT_MODE_MSIX);
  61 }
  62
  63 static inline void aac_change_to_intx(struct aac_dev *dev)
  64 {
  65         aac_src_access_devreg(dev, AAC_DISABLE_MSIX);
  66         aac_src_access_devreg(dev, AAC_ENABLE_INTX);
  67 }
  68
  69 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
  70 {
  71         unsigned char *base;
  72         unsigned long size, align;
  73         const unsigned long fibsize = dev->max_fib_size;
  74         const unsigned long printfbufsiz = 256;
  75         unsigned long host_rrq_size, aac_init_size;
  76         union aac_init *init;
  77         dma_addr_t phys;
  78         unsigned long aac_max_hostphysmempages;
  79
  80         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
  81                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
  82                 (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
  83                 !dev->sa_firmware)) {
  84                 host_rrq_size =
  85                         (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB)
  86                                 * sizeof(u32);
  87                 aac_init_size = sizeof(union aac_init);
  88         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 &&
  89                 dev->sa_firmware) {
  90                 host_rrq_size = (dev->scsi_host_ptr->can_queue
  91                         + AAC_NUM_MGT_FIB) * sizeof(u32)  * AAC_MAX_MSIX;
  92                 aac_init_size = sizeof(union aac_init) +
  93                         (AAC_MAX_HRRQ - 1) * sizeof(struct _rrq);
  94         } else {
  95                 host_rrq_size = 0;
  96                 aac_init_size = sizeof(union aac_init);
  97         }
  98         size = fibsize + aac_init_size + commsize + commalign +
  99                         printfbufsiz + host_rrq_size;
 100
 101         base = dma_alloc_coherent(&dev->pdev->dev, size, &phys, GFP_KERNEL);
 102         if (base == NULL) {
 103                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
 104                 return 0;
 105         }
 106
 107         dev->comm_addr = (void *)base;
 108         dev->comm_phys = phys;
 109         dev->comm_size = size;
 110
 111         if ((dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) ||
 112             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) ||
 113             (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3)) {
 114                 dev->host_rrq = (u32 *)(base + fibsize);
 115                 dev->host_rrq_pa = phys + fibsize;
 116                 memset(dev->host_rrq, 0, host_rrq_size);
 117         }
 118
 119         dev->init = (union aac_init *)(base + fibsize + host_rrq_size);
 120         dev->init_pa = phys + fibsize + host_rrq_size;
 121
 122         init = dev->init;
 123
 124         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
 125                 int i;
 126                 u64 addr;
 127
 128                 init->r8.init_struct_revision =
 129                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_8);
 130                 init->r8.init_flags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 131                                         INITFLAGS_DRIVER_USES_UTC_TIME |
 132                                         INITFLAGS_DRIVER_SUPPORTS_PM);
 133                 init->r8.init_flags |=
 134                                 cpu_to_le32(INITFLAGS_DRIVER_SUPPORTS_HBA_MODE);
 135                 init->r8.rr_queue_count = cpu_to_le32(dev->max_msix);
 136                 init->r8.max_io_size =
 137                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 138                 init->r8.max_num_aif = init->r8.reserved1 =
 139                         init->r8.reserved2 = 0;
 140
 141                 for (i = 0; i < dev->max_msix; i++) {
 142                         addr = (u64)dev->host_rrq_pa + dev->vector_cap * i *
 143                                         sizeof(u32);
 144                         init->r8.rrq[i].host_addr_high = cpu_to_le32(
 145                                                 upper_32_bits(addr));
 146                         init->r8.rrq[i].host_addr_low = cpu_to_le32(
 147                                                 lower_32_bits(addr));
 148                         init->r8.rrq[i].msix_id = i;
 149                         init->r8.rrq[i].element_count = cpu_to_le16(
 150                                         (u16)dev->vector_cap);
 151                         init->r8.rrq[i].comp_thresh =
 152                                         init->r8.rrq[i].unused = 0;
 153                 }
 154
 155                 pr_warn("aacraid: Comm Interface type3 enabled\n");
 156         } else {
 157                 init->r7.init_struct_revision =
 158                         cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
 159                 if (dev->max_fib_size != sizeof(struct hw_fib))
 160                         init->r7.init_struct_revision =
 161                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
 162                 init->r7.no_of_msix_vectors = cpu_to_le32(SA_MINIPORT_REVISION);
 163                 init->r7.fsrev = cpu_to_le32(dev->fsrev);
 164
 165                 /*
 166                  *      Adapter Fibs are the first thing allocated so that they
 167                  *      start page aligned
 168                  */
 169                 dev->aif_base_va = (struct hw_fib *)base;
 170
 171                 init->r7.adapter_fibs_virtual_address = 0;
 172                 init->r7.adapter_fibs_physical_address = cpu_to_le32((u32)phys);
 173                 init->r7.adapter_fibs_size = cpu_to_le32(fibsize);
 174                 init->r7.adapter_fib_align = cpu_to_le32(sizeof(struct hw_fib));
 175
 176                 /*
 177                  * number of 4k pages of host physical memory. The aacraid fw
 178                  * needs this number to be less than 4gb worth of pages. New
 179                  * firmware doesn't have any issues with the mapping system, but
 180                  * older Firmware did, and had *troubles* dealing with the math
 181                  * overloading past 32 bits, thus we must limit this field.
 182                  */
 183                 aac_max_hostphysmempages =
 184                                 dma_get_required_mask(&dev->pdev->dev) >> 12;
 185                 if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
 186                         init->r7.host_phys_mem_pages =
 187                                         cpu_to_le32(aac_max_hostphysmempages);
 188                 else
 189                         init->r7.host_phys_mem_pages =
 190                                         cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
 191
 192                 init->r7.init_flags =
 193                         cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
 194                         INITFLAGS_DRIVER_SUPPORTS_PM);
 195                 init->r7.max_io_commands =
 196                         cpu_to_le32(dev->scsi_host_ptr->can_queue +
 197                                         AAC_NUM_MGT_FIB);
 198                 init->r7.max_io_size =
 199                         cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 200                 init->r7.max_fib_size = cpu_to_le32(dev->max_fib_size);
 201                 init->r7.max_num_aif = cpu_to_le32(dev->max_num_aif);
 202
 203                 if (dev->comm_interface == AAC_COMM_MESSAGE) {
 204                         init->r7.init_flags |=
 205                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
 206                         pr_warn("aacraid: Comm Interface enabled\n");
 207                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
 208                         init->r7.init_struct_revision =
 209                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
 210                         init->r7.init_flags |=
 211                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 212                                 INITFLAGS_NEW_COMM_TYPE1_SUPPORTED |
 213                                 INITFLAGS_FAST_JBOD_SUPPORTED);
 214                         init->r7.host_rrq_addr_high =
 215                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
 216                         init->r7.host_rrq_addr_low =
 217                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
 218                         pr_warn("aacraid: Comm Interface type1 enabled\n");
 219                 } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
 220                         init->r7.init_struct_revision =
 221                                 cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
 222                         init->r7.init_flags |=
 223                                 cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 224                                 INITFLAGS_NEW_COMM_TYPE2_SUPPORTED |
 225                                 INITFLAGS_FAST_JBOD_SUPPORTED);
 226                         init->r7.host_rrq_addr_high =
 227                                 cpu_to_le32(upper_32_bits(dev->host_rrq_pa));
 228                         init->r7.host_rrq_addr_low =
 229                                 cpu_to_le32(lower_32_bits(dev->host_rrq_pa));
 230                         init->r7.no_of_msix_vectors =
 231                                 cpu_to_le32(dev->max_msix);
 232                         /* must be the COMM_PREFERRED_SETTINGS values */
 233                         pr_warn("aacraid: Comm Interface type2 enabled\n");
 234                 }
 235         }
 236
 237         /*
 238          * Increment the base address by the amount already used
 239          */
 240         base = base + fibsize + host_rrq_size + aac_init_size;
 241         phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
 242                         aac_init_size);
 243
 244         /*
 245          *      Align the beginning of Headers to commalign
 246          */
 247         align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
 248         base = base + align;
 249         phys = phys + align;
 250         /*
 251          *      Fill in addresses of the Comm Area Headers and Queues
 252          */
 253         *commaddr = base;
 254         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
 255                 init->r7.comm_header_address = cpu_to_le32((u32)phys);
 256         /*
 257          *      Increment the base address by the size of the CommArea
 258          */
 259         base = base + commsize;
 260         phys = phys + commsize;
 261         /*
 262          *       Place the Printf buffer area after the Fast I/O comm area.
 263          */
 264         dev->printfbuf = (void *)base;
 265         if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3) {
 266                 init->r7.printfbuf = cpu_to_le32(phys);
 267                 init->r7.printfbufsiz = cpu_to_le32(printfbufsiz);
 268         }
 269         memset(base, 0, printfbufsiz);
 270         return 1;
 271 }
 272
 273 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
 274 {
 275         atomic_set(&q->numpending, 0);
 276         q->dev = dev;
 277         init_waitqueue_head(&q->cmdready);
 278         INIT_LIST_HEAD(&q->cmdq);
 279         init_waitqueue_head(&q->qfull);
 280         spin_lock_init(&q->lockdata);
 281         q->lock = &q->lockdata;
 282         q->headers.producer = (__le32 *)mem;
 283         q->headers.consumer = (__le32 *)(mem+1);
 284         *(q->headers.producer) = cpu_to_le32(qsize);
 285         *(q->headers.consumer) = cpu_to_le32(qsize);
 286         q->entries = qsize;
 287 }
 288
 289 static void aac_wait_for_io_completion(struct aac_dev *aac)
 290 {
 291         unsigned long flagv = 0;
 292         int i = 0;
 293
 294         for (i = 60; i; --i) {
 295                 struct scsi_device *dev;
 296                 struct scsi_cmnd *command;
 297                 int active = 0;
 298
 299                 __shost_for_each_device(dev, aac->scsi_host_ptr) {
 300                         spin_lock_irqsave(&dev->list_lock, flagv);
 301                         list_for_each_entry(command, &dev->cmd_list, list) {
 302                                 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
 303                                         active++;
 304                                         break;
 305                                 }
 306                         }
 307                         spin_unlock_irqrestore(&dev->list_lock, flagv);
 308                         if (active)
 309                                 break;
 310
 311                 }
 312                 /*
 313                  * We can exit If all the commands are complete
 314                  */
 315                 if (active == 0)
 316                         break;
 317                 ssleep(1);
 318         }
 319 }
 320
 321 /**
 322  *      aac_send_shutdown               -       shutdown an adapter
 323  *      @dev: Adapter to shutdown
 324  *
 325  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
 326  */
 327
 328 int aac_send_shutdown(struct aac_dev * dev)
 329 {
 330         struct fib * fibctx;
 331         struct aac_close *cmd;
 332         int status = 0;
 333
 334         if (aac_adapter_check_health(dev))
 335                 return status;
 336
 337         if (!dev->adapter_shutdown) {
 338                 mutex_lock(&dev->ioctl_mutex);
 339                 dev->adapter_shutdown = 1;
 340                 mutex_unlock(&dev->ioctl_mutex);
 341         }
 342
 343         aac_wait_for_io_completion(dev);
 344
 345         fibctx = aac_fib_alloc(dev);
 346         if (!fibctx)
 347                 return -ENOMEM;
 348         aac_fib_init(fibctx);
 349
 350         cmd = (struct aac_close *) fib_data(fibctx);
 351         cmd->command = cpu_to_le32(VM_CloseAll);
 352         cmd->cid = cpu_to_le32(0xfffffffe);
 353
 354         status = aac_fib_send(ContainerCommand,
 355                           fibctx,
 356                           sizeof(struct aac_close),
 357                           FsaNormal,
 358                           -2 /* Timeout silently */, 1,
 359                           NULL, NULL);
 360
 361         if (status >= 0)
 362                 aac_fib_complete(fibctx);
 363         /* FIB should be freed only after getting the response from the F/W */
 364         if (status != -ERESTARTSYS)
 365                 aac_fib_free(fibctx);
 366         if (aac_is_src(dev) &&
 367              dev->msi_enabled)
 368                 aac_set_intx_mode(dev);
 369         return status;
 370 }
 371
 372 /**
 373  *      aac_comm_init   -       Initialise FSA data structures
 374  *      @dev:   Adapter to initialise
 375  *
 376  *      Initializes the data structures that are required for the FSA commuication
 377  *      interface to operate.
 378  *      Returns
 379  *              1 - if we were able to init the commuication interface.
 380  *              0 - If there were errors initing. This is a fatal error.
 381  */
 382
 383 static int aac_comm_init(struct aac_dev * dev)
 384 {
 385         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
 386         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
 387         u32 *headers;
 388         struct aac_entry * queues;
 389         unsigned long size;
 390         struct aac_queue_block * comm = dev->queues;
 391         /*
 392          *      Now allocate and initialize the zone structures used as our
 393          *      pool of FIB context records.  The size of the zone is based
 394          *      on the system memory size.  We also initialize the mutex used
 395          *      to protect the zone.
 396          */
 397         spin_lock_init(&dev->fib_lock);
 398
 399         /*
 400          *      Allocate the physically contiguous space for the commuication
 401          *      queue headers.
 402          */
 403
 404         size = hdrsize + queuesize;
 405
 406         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
 407                 return -ENOMEM;
 408
 409         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
 410
 411         /* Adapter to Host normal priority Command queue */
 412         comm->queue[HostNormCmdQueue].base = queues;
 413         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
 414         queues += HOST_NORM_CMD_ENTRIES;
 415         headers += 2;
 416
 417         /* Adapter to Host high priority command queue */
 418         comm->queue[HostHighCmdQueue].base = queues;
 419         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
 420
 421         queues += HOST_HIGH_CMD_ENTRIES;
 422         headers +=2;
 423
 424         /* Host to adapter normal priority command queue */
 425         comm->queue[AdapNormCmdQueue].base = queues;
 426         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
 427
 428         queues += ADAP_NORM_CMD_ENTRIES;
 429         headers += 2;
 430
 431         /* host to adapter high priority command queue */
 432         comm->queue[AdapHighCmdQueue].base = queues;
 433         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
 434
 435         queues += ADAP_HIGH_CMD_ENTRIES;
 436         headers += 2;
 437
 438         /* adapter to host normal priority response queue */
 439         comm->queue[HostNormRespQueue].base = queues;
 440         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
 441         queues += HOST_NORM_RESP_ENTRIES;
 442         headers += 2;
 443
 444         /* adapter to host high priority response queue */
 445         comm->queue[HostHighRespQueue].base = queues;
 446         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
 447
 448         queues += HOST_HIGH_RESP_ENTRIES;
 449         headers += 2;
 450
 451         /* host to adapter normal priority response queue */
 452         comm->queue[AdapNormRespQueue].base = queues;
 453         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
 454
 455         queues += ADAP_NORM_RESP_ENTRIES;
 456         headers += 2;
 457
 458         /* host to adapter high priority response queue */
 459         comm->queue[AdapHighRespQueue].base = queues;
 460         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
 461
 462         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
 463         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
 464         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
 465         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
 466
 467         return 0;
 468 }
 469
 470 void aac_define_int_mode(struct aac_dev *dev)
 471 {
 472         int i, msi_count, min_msix;
 473
 474         msi_count = i = 0;
 475         /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
 476         if (dev->max_msix == 0 ||
 477             dev->pdev->device == PMC_DEVICE_S6 ||
 478             dev->sync_mode) {
 479                 dev->max_msix = 1;
 480                 dev->vector_cap =
 481                         dev->scsi_host_ptr->can_queue +
 482                         AAC_NUM_MGT_FIB;
 483                 return;
 484         }
 485
 486         /* Don't bother allocating more MSI-X vectors than cpus */
 487         msi_count = min(dev->max_msix,
 488                 (unsigned int)num_online_cpus());
 489
 490         dev->max_msix = msi_count;
 491
 492         if (msi_count > AAC_MAX_MSIX)
 493                 msi_count = AAC_MAX_MSIX;
 494
 495         if (msi_count > 1 &&
 496             pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
 497                 min_msix = 2;
 498                 i = pci_alloc_irq_vectors(dev->pdev,
 499                                           min_msix, msi_count,
 500                                           PCI_IRQ_MSIX | PCI_IRQ_AFFINITY);
 501                 if (i > 0) {
 502                         dev->msi_enabled = 1;
 503                         msi_count = i;
 504                 } else {
 505                         dev->msi_enabled = 0;
 506                         dev_err(&dev->pdev->dev,
 507                         "MSIX not supported!! Will try INTX 0x%x.\n", i);
 508                 }
 509         }
 510
 511         if (!dev->msi_enabled)
 512                 dev->max_msix = msi_count = 1;
 513         else {
 514                 if (dev->max_msix > msi_count)
 515                         dev->max_msix = msi_count;
 516         }
 517         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE3 && dev->sa_firmware)
 518                 dev->vector_cap = dev->scsi_host_ptr->can_queue +
 519                                 AAC_NUM_MGT_FIB;
 520         else
 521                 dev->vector_cap = (dev->scsi_host_ptr->can_queue +
 522                                 AAC_NUM_MGT_FIB) / msi_count;
 523
 524 }
 525 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 526 {
 527         u32 status[5];
 528         struct Scsi_Host * host = dev->scsi_host_ptr;
 529         extern int aac_sync_mode;
 530
 531         /*
 532          *      Check the preferred comm settings, defaults from template.
 533          */
 534         dev->management_fib_count = 0;
 535         spin_lock_init(&dev->manage_lock);
 536         spin_lock_init(&dev->sync_lock);
 537         spin_lock_init(&dev->iq_lock);
 538         dev->max_fib_size = sizeof(struct hw_fib);
 539         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 540                 - sizeof(struct aac_fibhdr)
 541                 - sizeof(struct aac_write) + sizeof(struct sgentry))
 542                         / sizeof(struct sgentry);
 543         dev->comm_interface = AAC_COMM_PRODUCER;
 544         dev->raw_io_interface = dev->raw_io_64 = 0;
 545
 546
 547         /*
 548          * Enable INTX mode, if not done already Enabled
 549          */
 550         if (aac_is_msix_mode(dev)) {
 551                 aac_change_to_intx(dev);
 552                 dev_info(&dev->pdev->dev, "Changed firmware to INTX mode");
 553         }
 554
 555         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
 556                 0, 0, 0, 0, 0, 0,
 557                 status+0, status+1, status+2, status+3, status+4)) &&
 558                 (status[0] == 0x00000001)) {
 559                 dev->doorbell_mask = status[3];
 560                 if (status[1] & AAC_OPT_NEW_COMM_64)
 561                         dev->raw_io_64 = 1;
 562                 dev->sync_mode = aac_sync_mode;
 563                 if (dev->a_ops.adapter_comm &&
 564                     (status[1] & AAC_OPT_NEW_COMM)) {
 565                         dev->comm_interface = AAC_COMM_MESSAGE;
 566                         dev->raw_io_interface = 1;
 567                         if ((status[1] & AAC_OPT_NEW_COMM_TYPE1)) {
 568                                 /* driver supports TYPE1 (Tupelo) */
 569                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
 570                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE2) {
 571                                 /* driver supports TYPE2 (Denali, Yosemite) */
 572                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 573                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE3) {
 574                                 /* driver supports TYPE3 (Yosemite, Thor) */
 575                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE3;
 576                         } else if (status[1] & AAC_OPT_NEW_COMM_TYPE4) {
 577                                 /* not supported TYPE - switch to sync. mode */
 578                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 579                                 dev->sync_mode = 1;
 580                         }
 581                 }
 582                 if ((status[1] & le32_to_cpu(AAC_OPT_EXTENDED)) &&
 583                         (status[4] & le32_to_cpu(AAC_EXTOPT_SA_FIRMWARE)))
 584                         dev->sa_firmware = 1;
 585                 else
 586                         dev->sa_firmware = 0;
 587
 588                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
 589                     (status[2] > dev->base_size)) {
 590                         aac_adapter_ioremap(dev, 0);
 591                         dev->base_size = status[2];
 592                         if (aac_adapter_ioremap(dev, status[2])) {
 593                                 /* remap failed, go back ... */
 594                                 dev->comm_interface = AAC_COMM_PRODUCER;
 595                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
 596                                         printk(KERN_WARNING
 597                                           "aacraid: unable to map adapter.\n");
 598                                         return NULL;
 599                                 }
 600                         }
 601                 }
 602         }
 603         dev->max_msix = 0;
 604         dev->msi_enabled = 0;
 605         dev->adapter_shutdown = 0;
 606         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 607           0, 0, 0, 0, 0, 0,
 608           status+0, status+1, status+2, status+3, status+4))
 609          && (status[0] == 0x00000001)) {
 610                 /*
 611                  *      status[1] >> 16         maximum command size in KB
 612                  *      status[1] & 0xFFFF      maximum FIB size
 613                  *      status[2] >> 16         maximum SG elements to driver
 614                  *      status[2] & 0xFFFF      maximum SG elements from driver
 615                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
 616                  */
 617                 host->max_sectors = (status[1] >> 16) << 1;
 618                 /* Multiple of 32 for PMC */
 619                 dev->max_fib_size = status[1] & 0xFFE0;
 620                 host->sg_tablesize = status[2] >> 16;
 621                 dev->sg_tablesize = status[2] & 0xFFFF;
 622                 if (aac_is_src(dev)) {
 623                         if (host->can_queue > (status[3] >> 16) -
 624                                         AAC_NUM_MGT_FIB)
 625                                 host->can_queue = (status[3] >> 16) -
 626                                         AAC_NUM_MGT_FIB;
 627                 } else if (host->can_queue > (status[3] & 0xFFFF) -
 628                                 AAC_NUM_MGT_FIB)
 629                         host->can_queue = (status[3] & 0xFFFF) -
 630                                 AAC_NUM_MGT_FIB;
 631
 632                 dev->max_num_aif = status[4] & 0xFFFF;
 633         }
 634         if (numacb > 0) {
 635                 if (numacb < host->can_queue)
 636                         host->can_queue = numacb;
 637                 else
 638                         pr_warn("numacb=%d ignored\n", numacb);
 639         }
 640
 641         if (aac_is_src(dev))
 642                 aac_define_int_mode(dev);
 643         /*
 644          *      Ok now init the communication subsystem
 645          */
 646
 647         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
 648         if (dev->queues == NULL) {
 649                 printk(KERN_ERR "Error could not allocate comm region.\n");
 650                 return NULL;
 651         }
 652
 653         if (aac_comm_init(dev)<0){
 654                 kfree(dev->queues);
 655                 return NULL;
 656         }
 657         /*
 658          *      Initialize the list of fibs
 659          */
 660         if (aac_fib_setup(dev) < 0) {
 661                 kfree(dev->queues);
 662                 return NULL;
 663         }
 664
 665         INIT_LIST_HEAD(&dev->fib_list);
 666         INIT_LIST_HEAD(&dev->sync_fib_list);
 667
 668         return dev;
 669 }
 670