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 struct aac_common aac_config = {
  47         .irq_mod = 1
  48 };
  49
  50 static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long commsize, unsigned long commalign)
  51 {
  52         unsigned char *base;
  53         unsigned long size, align;
  54         const unsigned long fibsize = 4096;
  55         const unsigned long printfbufsiz = 256;
  56         unsigned long host_rrq_size = 0;
  57         struct aac_init *init;
  58         dma_addr_t phys;
  59         unsigned long aac_max_hostphysmempages;
  60
  61         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
  62             dev->comm_interface == AAC_COMM_MESSAGE_TYPE2)
  63                 host_rrq_size = (dev->scsi_host_ptr->can_queue
  64                         + AAC_NUM_MGT_FIB) * sizeof(u32);
  65         size = fibsize + sizeof(struct aac_init) + commsize +
  66                         commalign + printfbufsiz + host_rrq_size;
  67
  68         base = pci_alloc_consistent(dev->pdev, size, &phys);
  69
  70         if(base == NULL)
  71         {
  72                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
  73                 return 0;
  74         }
  75         dev->comm_addr = (void *)base;
  76         dev->comm_phys = phys;
  77         dev->comm_size = size;
  78
  79         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
  80             dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
  81                 dev->host_rrq = (u32 *)(base + fibsize);
  82                 dev->host_rrq_pa = phys + fibsize;
  83                 memset(dev->host_rrq, 0, host_rrq_size);
  84         }
  85
  86         dev->init = (struct aac_init *)(base + fibsize + host_rrq_size);
  87         dev->init_pa = phys + fibsize + host_rrq_size;
  88
  89         init = dev->init;
  90
  91         init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
  92         if (dev->max_fib_size != sizeof(struct hw_fib))
  93                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
  94         init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
  95         init->fsrev = cpu_to_le32(dev->fsrev);
  96
  97         /*
  98          *      Adapter Fibs are the first thing allocated so that they
  99          *      start page aligned
 100          */
 101         dev->aif_base_va = (struct hw_fib *)base;
 102
 103         init->AdapterFibsVirtualAddress = 0;
 104         init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
 105         init->AdapterFibsSize = cpu_to_le32(fibsize);
 106         init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
 107         /*
 108          * number of 4k pages of host physical memory. The aacraid fw needs
 109          * this number to be less than 4gb worth of pages. New firmware doesn't
 110          * have any issues with the mapping system, but older Firmware did, and
 111          * had *troubles* dealing with the math overloading past 32 bits, thus
 112          * we must limit this field.
 113          */
 114         aac_max_hostphysmempages = dma_get_required_mask(&dev->pdev->dev) >> 12;
 115         if (aac_max_hostphysmempages < AAC_MAX_HOSTPHYSMEMPAGES)
 116                 init->HostPhysMemPages = cpu_to_le32(aac_max_hostphysmempages);
 117         else
 118                 init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
 119
 120         init->InitFlags = cpu_to_le32(INITFLAGS_DRIVER_USES_UTC_TIME |
 121                 INITFLAGS_DRIVER_SUPPORTS_PM);
 122         init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
 123         init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 124         init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
 125         init->MaxNumAif = cpu_to_le32(dev->max_num_aif);
 126
 127         if (dev->comm_interface == AAC_COMM_MESSAGE) {
 128                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
 129                 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
 130         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1) {
 131                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_6);
 132                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 133                         INITFLAGS_NEW_COMM_TYPE1_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
 134                 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
 135                 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
 136                 dprintk((KERN_WARNING"aacraid: New Comm Interface type1 enabled\n"));
 137         } else if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE2) {
 138                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_7);
 139                 init->InitFlags |= cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED |
 140                         INITFLAGS_NEW_COMM_TYPE2_SUPPORTED | INITFLAGS_FAST_JBOD_SUPPORTED);
 141                 init->HostRRQ_AddrHigh = cpu_to_le32((u32)((u64)dev->host_rrq_pa >> 32));
 142                 init->HostRRQ_AddrLow = cpu_to_le32((u32)(dev->host_rrq_pa & 0xffffffff));
 143                 init->MiniPortRevision = cpu_to_le32(0L);               /* number of MSI-X */
 144                 dprintk((KERN_WARNING"aacraid: New Comm Interface type2 enabled\n"));
 145         }
 146
 147         /*
 148          * Increment the base address by the amount already used
 149          */
 150         base = base + fibsize + host_rrq_size + sizeof(struct aac_init);
 151         phys = (dma_addr_t)((ulong)phys + fibsize + host_rrq_size +
 152                 sizeof(struct aac_init));
 153
 154         /*
 155          *      Align the beginning of Headers to commalign
 156          */
 157         align = (commalign - ((uintptr_t)(base) & (commalign - 1)));
 158         base = base + align;
 159         phys = phys + align;
 160         /*
 161          *      Fill in addresses of the Comm Area Headers and Queues
 162          */
 163         *commaddr = base;
 164         init->CommHeaderAddress = cpu_to_le32((u32)phys);
 165         /*
 166          *      Increment the base address by the size of the CommArea
 167          */
 168         base = base + commsize;
 169         phys = phys + commsize;
 170         /*
 171          *       Place the Printf buffer area after the Fast I/O comm area.
 172          */
 173         dev->printfbuf = (void *)base;
 174         init->printfbuf = cpu_to_le32(phys);
 175         init->printfbufsiz = cpu_to_le32(printfbufsiz);
 176         memset(base, 0, printfbufsiz);
 177         return 1;
 178 }
 179
 180 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
 181 {
 182         q->numpending = 0;
 183         q->dev = dev;
 184         init_waitqueue_head(&q->cmdready);
 185         INIT_LIST_HEAD(&q->cmdq);
 186         init_waitqueue_head(&q->qfull);
 187         spin_lock_init(&q->lockdata);
 188         q->lock = &q->lockdata;
 189         q->headers.producer = (__le32 *)mem;
 190         q->headers.consumer = (__le32 *)(mem+1);
 191         *(q->headers.producer) = cpu_to_le32(qsize);
 192         *(q->headers.consumer) = cpu_to_le32(qsize);
 193         q->entries = qsize;
 194 }
 195
 196 /**
 197  *      aac_send_shutdown               -       shutdown an adapter
 198  *      @dev: Adapter to shutdown
 199  *
 200  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
 201  */
 202
 203 int aac_send_shutdown(struct aac_dev * dev)
 204 {
 205         struct fib * fibctx;
 206         struct aac_close *cmd;
 207         int status;
 208
 209         fibctx = aac_fib_alloc(dev);
 210         if (!fibctx)
 211                 return -ENOMEM;
 212         aac_fib_init(fibctx);
 213
 214         cmd = (struct aac_close *) fib_data(fibctx);
 215
 216         cmd->command = cpu_to_le32(VM_CloseAll);
 217         cmd->cid = cpu_to_le32(0xfffffffe);
 218
 219         status = aac_fib_send(ContainerCommand,
 220                           fibctx,
 221                           sizeof(struct aac_close),
 222                           FsaNormal,
 223                           -2 /* Timeout silently */, 1,
 224                           NULL, NULL);
 225
 226         if (status >= 0)
 227                 aac_fib_complete(fibctx);
 228         /* FIB should be freed only after getting the response from the F/W */
 229         if (status != -ERESTARTSYS)
 230                 aac_fib_free(fibctx);
 231         return status;
 232 }
 233
 234 /**
 235  *      aac_comm_init   -       Initialise FSA data structures
 236  *      @dev:   Adapter to initialise
 237  *
 238  *      Initializes the data structures that are required for the FSA commuication
 239  *      interface to operate.
 240  *      Returns
 241  *              1 - if we were able to init the commuication interface.
 242  *              0 - If there were errors initing. This is a fatal error.
 243  */
 244
 245 static int aac_comm_init(struct aac_dev * dev)
 246 {
 247         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
 248         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
 249         u32 *headers;
 250         struct aac_entry * queues;
 251         unsigned long size;
 252         struct aac_queue_block * comm = dev->queues;
 253         /*
 254          *      Now allocate and initialize the zone structures used as our
 255          *      pool of FIB context records.  The size of the zone is based
 256          *      on the system memory size.  We also initialize the mutex used
 257          *      to protect the zone.
 258          */
 259         spin_lock_init(&dev->fib_lock);
 260
 261         /*
 262          *      Allocate the physically contiguous space for the commuication
 263          *      queue headers.
 264          */
 265
 266         size = hdrsize + queuesize;
 267
 268         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
 269                 return -ENOMEM;
 270
 271         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
 272
 273         /* Adapter to Host normal priority Command queue */
 274         comm->queue[HostNormCmdQueue].base = queues;
 275         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
 276         queues += HOST_NORM_CMD_ENTRIES;
 277         headers += 2;
 278
 279         /* Adapter to Host high priority command queue */
 280         comm->queue[HostHighCmdQueue].base = queues;
 281         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
 282
 283         queues += HOST_HIGH_CMD_ENTRIES;
 284         headers +=2;
 285
 286         /* Host to adapter normal priority command queue */
 287         comm->queue[AdapNormCmdQueue].base = queues;
 288         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
 289
 290         queues += ADAP_NORM_CMD_ENTRIES;
 291         headers += 2;
 292
 293         /* host to adapter high priority command queue */
 294         comm->queue[AdapHighCmdQueue].base = queues;
 295         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
 296
 297         queues += ADAP_HIGH_CMD_ENTRIES;
 298         headers += 2;
 299
 300         /* adapter to host normal priority response queue */
 301         comm->queue[HostNormRespQueue].base = queues;
 302         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
 303         queues += HOST_NORM_RESP_ENTRIES;
 304         headers += 2;
 305
 306         /* adapter to host high priority response queue */
 307         comm->queue[HostHighRespQueue].base = queues;
 308         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
 309
 310         queues += HOST_HIGH_RESP_ENTRIES;
 311         headers += 2;
 312
 313         /* host to adapter normal priority response queue */
 314         comm->queue[AdapNormRespQueue].base = queues;
 315         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
 316
 317         queues += ADAP_NORM_RESP_ENTRIES;
 318         headers += 2;
 319
 320         /* host to adapter high priority response queue */
 321         comm->queue[AdapHighRespQueue].base = queues;
 322         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
 323
 324         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
 325         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
 326         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
 327         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
 328
 329         return 0;
 330 }
 331
 332 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 333 {
 334         u32 status[5];
 335         struct Scsi_Host * host = dev->scsi_host_ptr;
 336         extern int aac_sync_mode;
 337
 338         /*
 339          *      Check the preferred comm settings, defaults from template.
 340          */
 341         dev->management_fib_count = 0;
 342         spin_lock_init(&dev->manage_lock);
 343         spin_lock_init(&dev->sync_lock);
 344         dev->max_fib_size = sizeof(struct hw_fib);
 345         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 346                 - sizeof(struct aac_fibhdr)
 347                 - sizeof(struct aac_write) + sizeof(struct sgentry))
 348                         / sizeof(struct sgentry);
 349         dev->comm_interface = AAC_COMM_PRODUCER;
 350         dev->raw_io_interface = dev->raw_io_64 = 0;
 351
 352         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
 353                 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
 354                         (status[0] == 0x00000001)) {
 355                 if (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_64))
 356                         dev->raw_io_64 = 1;
 357                 dev->sync_mode = aac_sync_mode;
 358                 if (dev->a_ops.adapter_comm &&
 359                         (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM))) {
 360                                 dev->comm_interface = AAC_COMM_MESSAGE;
 361                                 dev->raw_io_interface = 1;
 362                         if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE1))) {
 363                                 /* driver supports TYPE1 (Tupelo) */
 364                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE1;
 365                         } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE2))) {
 366                                 /* driver supports TYPE2 (Denali) */
 367                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 368                         } else if ((status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE4)) ||
 369                                   (status[1] & le32_to_cpu(AAC_OPT_NEW_COMM_TYPE3))) {
 370                                 /* driver doesn't TYPE3 and TYPE4 */
 371                                 /* switch to sync. mode */
 372                                 dev->comm_interface = AAC_COMM_MESSAGE_TYPE2;
 373                                 dev->sync_mode = 1;
 374                         }
 375                 }
 376                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
 377                     (status[2] > dev->base_size)) {
 378                         aac_adapter_ioremap(dev, 0);
 379                         dev->base_size = status[2];
 380                         if (aac_adapter_ioremap(dev, status[2])) {
 381                                 /* remap failed, go back ... */
 382                                 dev->comm_interface = AAC_COMM_PRODUCER;
 383                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
 384                                         printk(KERN_WARNING
 385                                           "aacraid: unable to map adapter.\n");
 386                                         return NULL;
 387                                 }
 388                         }
 389                 }
 390         }
 391         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 392           0, 0, 0, 0, 0, 0,
 393           status+0, status+1, status+2, status+3, status+4))
 394          && (status[0] == 0x00000001)) {
 395                 /*
 396                  *      status[1] >> 16         maximum command size in KB
 397                  *      status[1] & 0xFFFF      maximum FIB size
 398                  *      status[2] >> 16         maximum SG elements to driver
 399                  *      status[2] & 0xFFFF      maximum SG elements from driver
 400                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
 401                  */
 402                 host->max_sectors = (status[1] >> 16) << 1;
 403                 /* Multiple of 32 for PMC */
 404                 dev->max_fib_size = status[1] & 0xFFE0;
 405                 host->sg_tablesize = status[2] >> 16;
 406                 dev->sg_tablesize = status[2] & 0xFFFF;
 407                 if (dev->pdev->device == PMC_DEVICE_S7 ||
 408                     dev->pdev->device == PMC_DEVICE_S8 ||
 409                     dev->pdev->device == PMC_DEVICE_S9)
 410                         host->can_queue = ((status[3] >> 16) ? (status[3] >> 16) :
 411                                 (status[3] & 0xFFFF)) - AAC_NUM_MGT_FIB;
 412                 else
 413                         host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
 414                 dev->max_num_aif = status[4] & 0xFFFF;
 415                 /*
 416                  *      NOTE:
 417                  *      All these overrides are based on a fixed internal
 418                  *      knowledge and understanding of existing adapters,
 419                  *      acbsize should be set with caution.
 420                  */
 421                 if (acbsize == 512) {
 422                         host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
 423                         dev->max_fib_size = 512;
 424                         dev->sg_tablesize = host->sg_tablesize
 425                           = (512 - sizeof(struct aac_fibhdr)
 426                             - sizeof(struct aac_write) + sizeof(struct sgentry))
 427                              / sizeof(struct sgentry);
 428                         host->can_queue = AAC_NUM_IO_FIB;
 429                 } else if (acbsize == 2048) {
 430                         host->max_sectors = 512;
 431                         dev->max_fib_size = 2048;
 432                         host->sg_tablesize = 65;
 433                         dev->sg_tablesize = 81;
 434                         host->can_queue = 512 - AAC_NUM_MGT_FIB;
 435                 } else if (acbsize == 4096) {
 436                         host->max_sectors = 1024;
 437                         dev->max_fib_size = 4096;
 438                         host->sg_tablesize = 129;
 439                         dev->sg_tablesize = 166;
 440                         host->can_queue = 256 - AAC_NUM_MGT_FIB;
 441                 } else if (acbsize == 8192) {
 442                         host->max_sectors = 2048;
 443                         dev->max_fib_size = 8192;
 444                         host->sg_tablesize = 257;
 445                         dev->sg_tablesize = 337;
 446                         host->can_queue = 128 - AAC_NUM_MGT_FIB;
 447                 } else if (acbsize > 0) {
 448                         printk("Illegal acbsize=%d ignored\n", acbsize);
 449                 }
 450         }
 451         {
 452
 453                 if (numacb > 0) {
 454                         if (numacb < host->can_queue)
 455                                 host->can_queue = numacb;
 456                         else
 457                                 printk("numacb=%d ignored\n", numacb);
 458                 }
 459         }
 460
 461         if (host->can_queue > AAC_NUM_IO_FIB)
 462                 host->can_queue = AAC_NUM_IO_FIB;
 463
 464         /*
 465          *      Ok now init the communication subsystem
 466          */
 467
 468         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
 469         if (dev->queues == NULL) {
 470                 printk(KERN_ERR "Error could not allocate comm region.\n");
 471                 return NULL;
 472         }
 473
 474         if (aac_comm_init(dev)<0){
 475                 kfree(dev->queues);
 476                 return NULL;
 477         }
 478         /*
 479          *      Initialize the list of fibs
 480          */
 481         if (aac_fib_setup(dev) < 0) {
 482                 kfree(dev->queues);
 483                 return NULL;
 484         }
 485
 486         INIT_LIST_HEAD(&dev->fib_list);
 487         INIT_LIST_HEAD(&dev->sync_fib_list);
 488
 489         return dev;
 490 }
 491
 492