kernel/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 PMC-Sierra, Inc. (aacraid@pmc-sierra.com)
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2, or (at your option)
  14  * any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; see the file COPYING.  If not, write to
  23  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  24  *
  25  * Module Name:
  26  *  comminit.c
  27  *
  28  * Abstract: This supports the initialization of the host adapter commuication interface.
  29  *    This is a platform dependent module for the pci cyclone board.
  30  *
  31  */
  32
  33 #include <linux/kernel.h>
  34 #include <linux/init.h>
  35 #include <linux/types.h>
  36 #include <linux/pci.h>
  37 #include <linux/spinlock.h>
  38 #include <linux/slab.h>
  39 #include <linux/blkdev.h>
  40 #include <linux/completion.h>
  41 #include <linux/mm.h>
  42 #include <scsi/scsi_host.h>
  43
  44 #include "aacraid.h"
  45
  46 static void aac_define_int_mode(struct aac_dev *dev);
  47
  48 struct aac_common aac_config = {
  49         .irq_mod = 1
  50 };
  51
  52 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
  53 {
  54         unsigned char *base;
  55         unsigned long size, align;
  56         const unsigned long fibsize = dev->max_fib_size;
  57         const unsigned long printfbufsiz = 256;
  58         unsigned long host_rrq_size = 0;
  59         struct aac_init *init;
  60         dma_addr_t phys;
  61         unsigned long aac_max_hostphysmempages;
  62
  63         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
  64             dev->comm_interface == AAC_COMM_MESSAGE_TYPE2)
  65                 host_rrq_size = (dev->scsi_host_ptr->can_queue
  66                         + AAC_NUM_MGT_FIB) * sizeof(u32);
  67         size = fibsize + sizeof(struct aac_init) + commsize +
  68                         commalign + printfbufsiz + host_rrq_size;
  69
  70         base = pci_alloc_consistent(dev->pdev, size, &phys);
  71
  72         if(base == NULL)
  73         {
  74                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
  75                 return 0;
  76         }
  77         dev->comm_addr = (void *)base;
  78         dev->comm_phys = phys;
  79         dev->comm_size = size;
  80
  81         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
  82             dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
  83                 dev->host_rrq = (u32 *)(base + fibsize);
  84                 dev->host_rrq_pa = phys + fibsize;
  85                 memset(dev->host_rrq, 0, host_rrq_size);
  86         }
  87
  88         dev->init = (struct aac_init *)(base + fibsize + host_rrq_size);
  89         dev->init_pa = phys + fibsize + host_rrq_size;
  90
  91         init = dev->init;
  92
  93         init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
  94         if (dev->max_fib_size != sizeof(struct hw_fib))
  95                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
  96         init->Sa_MSIXVectors = cpu_to_le32(Sa_MINIPORT_REVISION);
  97         init->fsrev = cpu_to_le32(dev->fsrev);
  98
  99         /*
 100          *      Adapter Fibs are the first thing allocated so that they
 101          *      start page aligned
 102          */
 103         dev->aif_base_va = (struct hw_fib *)base;
 104
 105         init->AdapterFibsVirtualAddress = 0;
 106         init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
 107         init->AdapterFibsSize = cpu_to_le32(fibsize);
 108         init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
 109         /*
 110          * number of 4k pages of host physical memory. The aacraid fw needs
 111          * this number to be less than 4gb worth of pages. New firmware doesn't
 112          * have any issues with the mapping system, but older Firmware did, and
 113          * had *troubles* dealing with the math overloading past 32 bits, thus
 114          * we must limit this field.
 115          */
 116         aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12;
 117         if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
 118                 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages);
 119         else
 120                 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
 121
 122         init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
 123                 INITFLAGS_DRIVER_SUPPORTS_PM);
 124         init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
 125         init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 126         init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
 127         init->MaxNumAif = cpu_to_le32(dev->max_num_aif);
 128
 129         if (dev->comm_interface == AAC_COMM_MESSAGE) {
 130                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
 131                 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
 132         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
 133                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
 134                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 135                         INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
 136                 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
 137                 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
 138                 dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n"));
 139         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
 140                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
 141                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 142                         INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
 143                 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
 144                 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
 145                 /* number of MSI-X */
 146                 init->Sa_MSIXVectors = cpu_to_le32(dev->max_msix);
 147                 dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n"));
 148         }
 149
 150         /*
 151          * Increment the base address by the amount already used
 152          */
 153         base = base + fibsize + host_rrq_size + sizeof(struct aac_init);
 154         phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
 155                 sizeof(struct aac_init));
 156
 157         /*
 158          *      Align the beginning of Headers to commalign
 159          */
 160         align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
 161         base = base + align;
 162         phys = phys + align;
 163         /*
 164          *      Fill in addresses of the Comm Area Headers and Queues
 165          */
 166         *commaddr = base;
 167         init->CommHeaderAddress = cpu_to_le32((u32)phys);
 168         /*
 169          *      Increment the base address by the size of the CommArea
 170          */
 171         base = base + commsize;
 172         phys = phys + commsize;
 173         /*
 174          *       Place the Printf buffer area after the Fast I/O comm area.
 175          */
 176         dev->printfbuf = (void *)base;
 177         init->printfbuf = cpu_to_le32(phys);
 178         init->printfbufsiz = cpu_to_le32(printfbufsiz);
 179         memset(base, 0, printfbufsiz);
 180         return 1;
 181 }
 182
 183 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
 184 {
 185         atomic_set(&q->numpending, 0);
 186         q->dev = dev;
 187         init_waitqueue_head(&q->cmdready);
 188         INIT_LIST_HEAD(&q->cmdq);
 189         init_waitqueue_head(&q->qfull);
 190         spin_lock_init(&q->lockdata);
 191         q->lock = &q->lockdata;
 192         q->headers.producer = (__le32 *)mem;
 193         q->headers.consumer = (__le32 *)(mem+1);
 194         *(q->headers.producer) = cpu_to_le32(qsize);
 195         *(q->headers.consumer) = cpu_to_le32(qsize);
 196         q->entries = qsize;
 197 }
 198
 199 /**
 200  *      aac_send_shutdown               -       shutdown an adapter
 201  *      @dev: Adapter to shutdown
 202  *
 203  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
 204  */
 205
 206 int aac_send_shutdown(struct aac_dev * dev)
 207 {
 208         struct fib * fibctx;
 209         struct aac_close *cmd;
 210         int status;
 211
 212         fibctx = aac_fib_alloc(dev);
 213         if (!fibctx)
 214                 return -ENOMEM;
 215         aac_fib_init(fibctx);
 216
 217         cmd = (struct aac_close *) fib_data(fibctx);
 218
 219         cmd->command = cpu_to_le32(VM_CloseAll);
 220         cmd->cid = cpu_to_le32(0xfffffffe);
 221
 222         status = aac_fib_send(ContainerCommand,
 223                           fibctx,
 224                           sizeof(struct aac_close),
 225                           FsaNormal,
 226                           -2 /* Timeout silently */, 1,
 227                           NULL, NULL);
 228
 229         if (status >= 0)
 230                 aac_fib_complete(fibctx);
 231         /* FIB should be freed only after getting the response from the F/W */
 232         if (status != -ERESTARTSYS)
 233                 aac_fib_free(fibctx);
 234         dev->adapter_shutdown = 1;
 235         if ((dev->pdev->device == PMC_DEVICE_S7 ||
 236              dev->pdev->device == PMC_DEVICE_S8 ||
 237              dev->pdev->device == PMC_DEVICE_S9) &&
 238              dev->msi_enabled)
 239                 aac_src_access_devreg(dev, AAC_ENABLE_INTX);
 240         return status;
 241 }
 242
 243 /**
 244  *      aac_comm_init   -       Initialise FSA data structures
 245  *      @dev:   Adapter to initialise
 246  *
 247  *      Initializes the data structures that are required for the FSA commuication
 248  *      interface to operate.
 249  *      Returns
 250  *              1 - if we were able to init the commuication interface.
 251  *              0 - If there were errors initing. This is a fatal error.
 252  */
 253
 254 static int aac_comm_init(struct aac_dev * dev)
 255 {
 256         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
 257         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
 258         u32 *headers;
 259         struct aac_entry * queues;
 260         unsigned long size;
 261         struct aac_queue_block * comm = dev->queues;
 262         /*
 263          *      Now allocate and initialize the zone structures used as our
 264          *      pool of FIB context records.  The size of the zone is based
 265          *      on the system memory size.  We also initialize the mutex used
 266          *      to protect the zone.
 267          */
 268         spin_lock_init(&dev->fib_lock);
 269
 270         /*
 271          *      Allocate the physically contiguous space for the commuication
 272          *      queue headers.
 273          */
 274
 275         size = hdrsize + queuesize;
 276
 277         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
 278                 return -ENOMEM;
 279
 280         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
 281
 282         /* Adapter to Host normal priority Command queue */
 283         comm->queue[HostNormCmdQueue].base = queues;
 284         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
 285         queues += HOST_NORM_CMD_ENTRIES;
 286         headers += 2;
 287
 288         /* Adapter to Host high priority command queue */
 289         comm->queue[HostHighCmdQueue].base = queues;
 290         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
 291
 292         queues += HOST_HIGH_CMD_ENTRIES;
 293         headers +=2;
 294
 295         /* Host to adapter normal priority command queue */
 296         comm->queue[AdapNormCmdQueue].base = queues;
 297         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
 298
 299         queues += ADAP_NORM_CMD_ENTRIES;
 300         headers += 2;
 301
 302         /* host to adapter high priority command queue */
 303         comm->queue[AdapHighCmdQueue].base = queues;
 304         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
 305
 306         queues += ADAP_HIGH_CMD_ENTRIES;
 307         headers += 2;
 308
 309         /* adapter to host normal priority response queue */
 310         comm->queue[HostNormRespQueue].base = queues;
 311         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
 312         queues += HOST_NORM_RESP_ENTRIES;
 313         headers += 2;
 314
 315         /* adapter to host high priority response queue */
 316         comm->queue[HostHighRespQueue].base = queues;
 317         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
 318
 319         queues += HOST_HIGH_RESP_ENTRIES;
 320         headers += 2;
 321
 322         /* host to adapter normal priority response queue */
 323         comm->queue[AdapNormRespQueue].base = queues;
 324         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
 325
 326         queues += ADAP_NORM_RESP_ENTRIES;
 327         headers += 2;
 328
 329         /* host to adapter high priority response queue */
 330         comm->queue[AdapHighRespQueue].base = queues;
 331         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
 332
 333         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
 334         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
 335         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
 336         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
 337
 338         return 0;
 339 }
 340
 341 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 342 {
 343         u32 status[5];
 344         struct Scsi_Host * host = dev->scsi_host_ptr;
 345         extern int aac_sync_mode;
 346
 347         /*
 348          *      Check the preferred comm settings, defaults from template.
 349          */
 350         dev->management_fib_count = 0;
 351         spin_lock_init(&dev->manage_lock);
 352         spin_lock_init(&dev->sync_lock);
 353         dev->max_fib_size = sizeof(struct hw_fib);
 354         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 355                 - sizeof(struct aac_fibhdr)
 356                 - sizeof(struct aac_write) + sizeof(struct sgentry))
 357                         / sizeof(struct sgentry);
 358         dev->comm_interface = AAC_COMM_PRODUCER;
 359         dev->raw_io_interface = dev->raw_io_64 = 0;
 360
 361         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
 362                 0, 0, 0, 0, 0, 0,
 363                 status+0, status+1, status+2, status+3, NULL)) &&
 364                         (status[0] == 0x00000001)) {
 365                 dev->doorbell_mask = status[3];
 366                 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
 367                         dev->raw_io_64 = 1;
 368                 dev->sync_mode = aac_sync_mode;
 369                 if (dev->a_ops.adapter_comm &&
 370                         (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) {
 371                                 dev->comm_interface = AAC_COMM_MESSAGE;
 372                                 dev->raw_io_interface = 1;
 373                         if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) {
 374                                 /* driver supports TYPE1 (Tupelo) */
 375                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
 376                         } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) {
 377                                 /* driver supports TYPE2 (Denali) */
 378                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 379                         } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) ||
 380                                   (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) {
 381                                 /* driver doesn't TYPE3 and TYPE4 */
 382                                 /* switch to sync. mode */
 383                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 384                                 dev->sync_mode = 1;
 385                         }
 386                 }
 387                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
 388                     (status[2] > dev->base_size)) {
 389                         aac_adapter_ioremap(dev, 0);
 390                         dev->base_size = status[2];
 391                         if (aac_adapter_ioremap(dev, status[2])) {
 392                                 /* remap failed, go back ... */
 393                                 dev->comm_interface = AAC_COMM_PRODUCER;
 394                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
 395                                         printk(KERN_WARNING
 396                                           "aacraid: unable to map adapter.\n");
 397                                         return NULL;
 398                                 }
 399                         }
 400                 }
 401         }
 402         dev->max_msix = 0;
 403         dev->msi_enabled = 0;
 404         dev->adapter_shutdown = 0;
 405         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 406           0, 0, 0, 0, 0, 0,
 407           status+0, status+1, status+2, status+3, status+4))
 408          && (status[0] == 0x00000001)) {
 409                 /*
 410                  *      status[1] >> 16         maximum command size in KB
 411                  *      status[1] & 0xFFFF      maximum FIB size
 412                  *      status[2] >> 16         maximum SG elements to driver
 413                  *      status[2] & 0xFFFF      maximum SG elements from driver
 414                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
 415                  */
 416                 host->max_sectors = (status[1] >> 16) << 1;
 417                 /* Multiple of 32 for PMC */
 418                 dev->max_fib_size = status[1] & 0xFFE0;
 419                 host->sg_tablesize = status[2] >> 16;
 420                 dev->sg_tablesize = status[2] & 0xFFFF;
 421                 if (dev->pdev->device == PMC_DEVICE_S7 ||
 422                     dev->pdev->device == PMC_DEVICE_S8 ||
 423                     dev->pdev->device == PMC_DEVICE_S9)
 424                         host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) :
 425                                 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB;
 426                 else
 427                         host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
 428                 dev->max_num_aif = status[4] & 0xFFFF;
 429                 /*
 430                  *      NOTE:
 431                  *      All these overrides are based on a fixed internal
 432                  *      knowledge and understanding of existing adapters,
 433                  *      acbsize should be set with caution.
 434                  */
 435                 if (acbsize == 512) {
 436                         host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
 437                         dev->max_fib_size = 512;
 438                         dev->sg_tablesize = host->sg_tablesize
 439                           = (512 - sizeof(struct aac_fibhdr)
 440                             - sizeof(struct aac_write) + sizeof(struct sgentry))
 441                              / sizeof(struct sgentry);
 442                         host->can_queue = AAC_NUM_IO_FIB;
 443                 } else if (acbsize == 2048) {
 444                         host->max_sectors = 512;
 445                         dev->max_fib_size = 2048;
 446                         host->sg_tablesize = 65;
 447                         dev->sg_tablesize = 81;
 448                         host->can_queue = 512 - AAC_NUM_MGT_FIB;
 449                 } else if (acbsize == 4096) {
 450                         host->max_sectors = 1024;
 451                         dev->max_fib_size = 4096;
 452                         host->sg_tablesize = 129;
 453                         dev->sg_tablesize = 166;
 454                         host->can_queue = 256 - AAC_NUM_MGT_FIB;
 455                 } else if (acbsize == 8192) {
 456                         host->max_sectors = 2048;
 457                         dev->max_fib_size = 8192;
 458                         host->sg_tablesize = 257;
 459                         dev->sg_tablesize = 337;
 460                         host->can_queue = 128 - AAC_NUM_MGT_FIB;
 461                 } else if (acbsize > 0) {
 462                         printk("Illegal acbsize=%d ignored\n", acbsize);
 463                 }
 464         }
 465         {
 466
 467                 if (numacb > 0) {
 468                         if (numacb < host->can_queue)
 469                                 host->can_queue = numacb;
 470                         else
 471                                 printk("numacb=%d ignored\n", numacb);
 472                 }
 473         }
 474
 475         if (host->can_queue > AAC_NUM_IO_FIB)
 476                 host->can_queue = AAC_NUM_IO_FIB;
 477
 478         if (dev->pdev->device == PMC_DEVICE_S6 ||
 479             dev->pdev->device == PMC_DEVICE_S7 ||
 480             dev->pdev->device == PMC_DEVICE_S8 ||
 481             dev->pdev->device == PMC_DEVICE_S9)
 482                 aac_define_int_mode(dev);
 483         /*
 484          *      Ok now init the communication subsystem
 485          */
 486
 487         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
 488         if (dev->queues == NULL) {
 489                 printk(KERN_ERR "Error could not allocate comm region.\n");
 490                 return NULL;
 491         }
 492
 493         if (aac_comm_init(dev)<0){
 494                 kfree(dev->queues);
 495                 return NULL;
 496         }
 497         /*
 498          *      Initialize the list of fibs
 499          */
 500         if (aac_fib_setup(dev) < 0) {
 501                 kfree(dev->queues);
 502                 return NULL;
 503         }
 504
 505         INIT_LIST_HEAD(&dev->fib_list);
 506         INIT_LIST_HEAD(&dev->sync_fib_list);
 507
 508         return dev;
 509 }
 510
 511 static void aac_define_int_mode(struct aac_dev *dev)
 512 {
 513
 514         int i, msi_count;
 515
 516         msi_count = i = 0;
 517         /* max. vectors from GET_COMM_PREFERRED_SETTINGS */
 518         if (dev->max_msix == 0 ||
 519             dev->pdev->device == PMC_DEVICE_S6 ||
 520             dev->sync_mode) {
 521                 dev->max_msix = 1;
 522                 dev->vector_cap =
 523                         dev->scsi_host_ptr->can_queue +
 524                         AAC_NUM_MGT_FIB;
 525                 return;
 526         }
 527
 528         msi_count = min(dev->max_msix,
 529                 (unsigned int)num_online_cpus());
 530
 531         dev->max_msix = msi_count;
 532
 533         if (msi_count > AAC_MAX_MSIX)
 534                 msi_count = AAC_MAX_MSIX;
 535
 536         for (i = 0; i < msi_count; i++)
 537                 dev->msixentry[i].entry = i;
 538
 539         if (msi_count > 1 &&
 540             pci_find_capability(dev->pdev, PCI_CAP_ID_MSIX)) {
 541                 i = pci_enable_msix(dev->pdev,
 542                                     dev->msixentry,
 543                                     msi_count);
 544                  /* Check how many MSIX vectors are allocated */
 545                 if (i >= 0) {
 546                         dev->msi_enabled = 1;
 547                         if (i) {
 548                                 msi_count = i;
 549                                 if (pci_enable_msix(dev->pdev,
 550                                     dev->msixentry,
 551                                     msi_count)) {
 552                                         dev->msi_enabled = 0;
 553                                         printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n",
 554                                                         dev->name, dev->id, i);
 555                                 }
 556                         }
 557                 } else {
 558                         dev->msi_enabled = 0;
 559                         printk(KERN_ERR "%s%d: MSIX not supported!! Will try MSI 0x%x.\n",
 560                                         dev->name, dev->id, i);
 561                 }
 562         }
 563
 564         if (!dev->msi_enabled) {
 565                 msi_count = 1;
 566                 i = pci_enable_msi(dev->pdev);
 567
 568                 if (!i) {
 569                         dev->msi_enabled = 1;
 570                         dev->msi = 1;
 571                 } else {
 572                         printk(KERN_ERR "%s%d: MSI not supported!! Will try INTx 0x%x.\n",
 573                                         dev->name, dev->id, i);
 574                 }
 575         }
 576
 577         if (!dev->msi_enabled)
 578                 dev->max_msix = msi_count = 1;
 579         else {
 580                 if (dev->max_msix > msi_count)
 581                         dev->max_msix = msi_count;
 582         }
 583         dev->vector_cap =
 584                 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) /
 585                 msi_count;
 586 }