drivers/scsi/aacraid/comminit.c

   1 /*
   2  *      Adaptec AAC series RAID controller driver
   3  *      (c) Copyright 2001 Red Hat Inc. <alan@redhat.com>
   4  *
   5  * based on the old aacraid driver that is..
   6  * Adaptec aacraid device driver for Linux.
   7  *
   8  * Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; see the file COPYING.  If not, write to
  22  * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  23  *
  24  * Module Name:
  25  *  comminit.c
  26  *
  27  * Abstract: This supports the initialization of the host adapter commuication interface.
  28  *    This is a platform dependent module for the pci cyclone board.
  29  *
  30  */
  31
  32 #include <linux/kernel.h>
  33 #include <linux/init.h>
  34 #include <linux/types.h>
  35 #include <linux/pci.h>
  36 #include <linux/spinlock.h>
  37 #include <linux/slab.h>
  38 #include <linux/blkdev.h>
  39 #include <linux/completion.h>
  40 #include <linux/mm.h>
  41 #include <scsi/scsi_host.h>
  42 #include <asm/semaphore.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         struct aac_init *init;
  57         dma_addr_t phys;
  58
  59         size = fibsize + sizeof(struct aac_init) + commsize + commalign + printfbufsiz;
  60
  61
  62         base = pci_alloc_consistent(dev->pdev, size, &phys);
  63
  64         if(base == NULL)
  65         {
  66                 printk(KERN_ERR "aacraid: unable to create mapping.\n");
  67                 return 0;
  68         }
  69         dev->comm_addr = (void *)base;
  70         dev->comm_phys = phys;
  71         dev->comm_size = size;
  72
  73         dev->init = (struct aac_init *)(base + fibsize);
  74         dev->init_pa = phys + fibsize;
  75
  76         init = dev->init;
  77
  78         init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION);
  79         if (dev->max_fib_size != sizeof(struct hw_fib))
  80                 init->InitStructRevision = cpu_to_le32(ADAPTER_INIT_STRUCT_REVISION_4);
  81         init->MiniPortRevision = cpu_to_le32(Sa_MINIPORT_REVISION);
  82         init->fsrev = cpu_to_le32(dev->fsrev);
  83
  84         /*
  85          *      Adapter Fibs are the first thing allocated so that they
  86          *      start page aligned
  87          */
  88         dev->aif_base_va = (struct hw_fib *)base;
  89
  90         init->AdapterFibsVirtualAddress = 0;
  91         init->AdapterFibsPhysicalAddress = cpu_to_le32((u32)phys);
  92         init->AdapterFibsSize = cpu_to_le32(fibsize);
  93         init->AdapterFibAlign = cpu_to_le32(sizeof(struct hw_fib));
  94         init->HostPhysMemPages = cpu_to_le32(AAC_MAX_HOSTPHYSMEMPAGES);
  95
  96         init->InitFlags = 0;
  97         if (dev->comm_interface == AAC_COMM_MESSAGE) {
  98                 init->InitFlags = cpu_to_le32(INITFLAGS_NEW_COMM_SUPPORTED);
  99                 dprintk((KERN_WARNING"aacraid: New Comm Interface enabled\n"));
 100         }
 101         init->MaxIoCommands = cpu_to_le32(dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
 102         init->MaxIoSize = cpu_to_le32(dev->scsi_host_ptr->max_sectors << 9);
 103         init->MaxFibSize = cpu_to_le32(dev->max_fib_size);
 104
 105         /*
 106          * Increment the base address by the amount already used
 107          */
 108         base = base + fibsize + sizeof(struct aac_init);
 109         phys = (dma_addr_t)((ulong)phys + fibsize + sizeof(struct aac_init));
 110         /*
 111          *      Align the beginning of Headers to commalign
 112          */
 113         align = (commalign - ((ptrdiff_t)(base) & (commalign - 1)));
 114         base = base + align;
 115         phys = phys + align;
 116         /*
 117          *      Fill in addresses of the Comm Area Headers and Queues
 118          */
 119         *commaddr = base;
 120         init->CommHeaderAddress = cpu_to_le32((u32)phys);
 121         /*
 122          *      Increment the base address by the size of the CommArea
 123          */
 124         base = base + commsize;
 125         phys = phys + commsize;
 126         /*
 127          *       Place the Printf buffer area after the Fast I/O comm area.
 128          */
 129         dev->printfbuf = (void *)base;
 130         init->printfbuf = cpu_to_le32(phys);
 131         init->printfbufsiz = cpu_to_le32(printfbufsiz);
 132         memset(base, 0, printfbufsiz);
 133         return 1;
 134 }
 135
 136 static void aac_queue_init(struct aac_dev * dev, struct aac_queue * q, u32 *mem, int qsize)
 137 {
 138         q->numpending = 0;
 139         q->dev = dev;
 140         init_waitqueue_head(&q->cmdready);
 141         INIT_LIST_HEAD(&q->cmdq);
 142         init_waitqueue_head(&q->qfull);
 143         spin_lock_init(&q->lockdata);
 144         q->lock = &q->lockdata;
 145         q->headers.producer = (__le32 *)mem;
 146         q->headers.consumer = (__le32 *)(mem+1);
 147         *(q->headers.producer) = cpu_to_le32(qsize);
 148         *(q->headers.consumer) = cpu_to_le32(qsize);
 149         q->entries = qsize;
 150 }
 151
 152 /**
 153  *      aac_send_shutdown               -       shutdown an adapter
 154  *      @dev: Adapter to shutdown
 155  *
 156  *      This routine will send a VM_CloseAll (shutdown) request to the adapter.
 157  */
 158
 159 int aac_send_shutdown(struct aac_dev * dev)
 160 {
 161         struct fib * fibctx;
 162         struct aac_close *cmd;
 163         int status;
 164
 165         fibctx = aac_fib_alloc(dev);
 166         if (!fibctx)
 167                 return -ENOMEM;
 168         aac_fib_init(fibctx);
 169
 170         cmd = (struct aac_close *) fib_data(fibctx);
 171
 172         cmd->command = cpu_to_le32(VM_CloseAll);
 173         cmd->cid = cpu_to_le32(0xffffffff);
 174
 175         status = aac_fib_send(ContainerCommand,
 176                           fibctx,
 177                           sizeof(struct aac_close),
 178                           FsaNormal,
 179                           -2 /* Timeout silently */, 1,
 180                           NULL, NULL);
 181
 182         if (status >= 0)
 183                 aac_fib_complete(fibctx);
 184         aac_fib_free(fibctx);
 185         return status;
 186 }
 187
 188 /**
 189  *      aac_comm_init   -       Initialise FSA data structures
 190  *      @dev:   Adapter to initialise
 191  *
 192  *      Initializes the data structures that are required for the FSA commuication
 193  *      interface to operate.
 194  *      Returns
 195  *              1 - if we were able to init the commuication interface.
 196  *              0 - If there were errors initing. This is a fatal error.
 197  */
 198
 199 static int aac_comm_init(struct aac_dev * dev)
 200 {
 201         unsigned long hdrsize = (sizeof(u32) * NUMBER_OF_COMM_QUEUES) * 2;
 202         unsigned long queuesize = sizeof(struct aac_entry) * TOTAL_QUEUE_ENTRIES;
 203         u32 *headers;
 204         struct aac_entry * queues;
 205         unsigned long size;
 206         struct aac_queue_block * comm = dev->queues;
 207         /*
 208          *      Now allocate and initialize the zone structures used as our
 209          *      pool of FIB context records.  The size of the zone is based
 210          *      on the system memory size.  We also initialize the mutex used
 211          *      to protect the zone.
 212          */
 213         spin_lock_init(&dev->fib_lock);
 214
 215         /*
 216          *      Allocate the physically contigous space for the commuication
 217          *      queue headers.
 218          */
 219
 220         size = hdrsize + queuesize;
 221
 222         if (!aac_alloc_comm(dev, (void * *)&headers, size, QUEUE_ALIGNMENT))
 223                 return -ENOMEM;
 224
 225         queues = (struct aac_entry *)(((ulong)headers) + hdrsize);
 226
 227         /* Adapter to Host normal priority Command queue */
 228         comm->queue[HostNormCmdQueue].base = queues;
 229         aac_queue_init(dev, &comm->queue[HostNormCmdQueue], headers, HOST_NORM_CMD_ENTRIES);
 230         queues += HOST_NORM_CMD_ENTRIES;
 231         headers += 2;
 232
 233         /* Adapter to Host high priority command queue */
 234         comm->queue[HostHighCmdQueue].base = queues;
 235         aac_queue_init(dev, &comm->queue[HostHighCmdQueue], headers, HOST_HIGH_CMD_ENTRIES);
 236
 237         queues += HOST_HIGH_CMD_ENTRIES;
 238         headers +=2;
 239
 240         /* Host to adapter normal priority command queue */
 241         comm->queue[AdapNormCmdQueue].base = queues;
 242         aac_queue_init(dev, &comm->queue[AdapNormCmdQueue], headers, ADAP_NORM_CMD_ENTRIES);
 243
 244         queues += ADAP_NORM_CMD_ENTRIES;
 245         headers += 2;
 246
 247         /* host to adapter high priority command queue */
 248         comm->queue[AdapHighCmdQueue].base = queues;
 249         aac_queue_init(dev, &comm->queue[AdapHighCmdQueue], headers, ADAP_HIGH_CMD_ENTRIES);
 250
 251         queues += ADAP_HIGH_CMD_ENTRIES;
 252         headers += 2;
 253
 254         /* adapter to host normal priority response queue */
 255         comm->queue[HostNormRespQueue].base = queues;
 256         aac_queue_init(dev, &comm->queue[HostNormRespQueue], headers, HOST_NORM_RESP_ENTRIES);
 257         queues += HOST_NORM_RESP_ENTRIES;
 258         headers += 2;
 259
 260         /* adapter to host high priority response queue */
 261         comm->queue[HostHighRespQueue].base = queues;
 262         aac_queue_init(dev, &comm->queue[HostHighRespQueue], headers, HOST_HIGH_RESP_ENTRIES);
 263
 264         queues += HOST_HIGH_RESP_ENTRIES;
 265         headers += 2;
 266
 267         /* host to adapter normal priority response queue */
 268         comm->queue[AdapNormRespQueue].base = queues;
 269         aac_queue_init(dev, &comm->queue[AdapNormRespQueue], headers, ADAP_NORM_RESP_ENTRIES);
 270
 271         queues += ADAP_NORM_RESP_ENTRIES;
 272         headers += 2;
 273
 274         /* host to adapter high priority response queue */
 275         comm->queue[AdapHighRespQueue].base = queues;
 276         aac_queue_init(dev, &comm->queue[AdapHighRespQueue], headers, ADAP_HIGH_RESP_ENTRIES);
 277
 278         comm->queue[AdapNormCmdQueue].lock = comm->queue[HostNormRespQueue].lock;
 279         comm->queue[AdapHighCmdQueue].lock = comm->queue[HostHighRespQueue].lock;
 280         comm->queue[AdapNormRespQueue].lock = comm->queue[HostNormCmdQueue].lock;
 281         comm->queue[AdapHighRespQueue].lock = comm->queue[HostHighCmdQueue].lock;
 282
 283         return 0;
 284 }
 285
 286 struct aac_dev *aac_init_adapter(struct aac_dev *dev)
 287 {
 288         u32 status[5];
 289         struct Scsi_Host * host = dev->scsi_host_ptr;
 290
 291         /*
 292          *      Check the preferred comm settings, defaults from template.
 293          */
 294         dev->max_fib_size = sizeof(struct hw_fib);
 295         dev->sg_tablesize = host->sg_tablesize = (dev->max_fib_size
 296                 - sizeof(struct aac_fibhdr)
 297                 - sizeof(struct aac_write) + sizeof(struct sgentry))
 298                         / sizeof(struct sgentry);
 299         dev->comm_interface = AAC_COMM_PRODUCER;
 300         dev->raw_io_64 = 0;
 301         if ((!aac_adapter_sync_cmd(dev, GET_ADAPTER_PROPERTIES,
 302                 0, 0, 0, 0, 0, 0, status+0, status+1, status+2, NULL, NULL)) &&
 303                         (status[0] == 0x00000001)) {
 304                 if (status[1] & AAC_OPT_NEW_COMM_64)
 305                         dev->raw_io_64 = 1;
 306                 if (dev->a_ops.adapter_comm &&
 307                     (status[1] & AAC_OPT_NEW_COMM))
 308                         dev->comm_interface = AAC_COMM_MESSAGE;
 309                 if ((dev->comm_interface == AAC_COMM_MESSAGE) &&
 310                     (status[2] > dev->base_size)) {
 311                         aac_adapter_ioremap(dev, 0);
 312                         dev->base_size = status[2];
 313                         if (aac_adapter_ioremap(dev, status[2])) {
 314                                 /* remap failed, go back ... */
 315                                 dev->comm_interface = AAC_COMM_PRODUCER;
 316                                 if (aac_adapter_ioremap(dev, AAC_MIN_FOOTPRINT_SIZE)) {
 317                                         printk(KERN_WARNING
 318                                           "aacraid: unable to map adapter.\n");
 319                                         return NULL;
 320                                 }
 321                         }
 322                 }
 323         }
 324         if ((!aac_adapter_sync_cmd(dev, GET_COMM_PREFERRED_SETTINGS,
 325           0, 0, 0, 0, 0, 0,
 326           status+0, status+1, status+2, status+3, status+4))
 327          && (status[0] == 0x00000001)) {
 328                 /*
 329                  *      status[1] >> 16         maximum command size in KB
 330                  *      status[1] & 0xFFFF      maximum FIB size
 331                  *      status[2] >> 16         maximum SG elements to driver
 332                  *      status[2] & 0xFFFF      maximum SG elements from driver
 333                  *      status[3] & 0xFFFF      maximum number FIBs outstanding
 334                  */
 335                 host->max_sectors = (status[1] >> 16) << 1;
 336                 dev->max_fib_size = status[1] & 0xFFFF;
 337                 host->sg_tablesize = status[2] >> 16;
 338                 dev->sg_tablesize = status[2] & 0xFFFF;
 339                 host->can_queue = (status[3] & 0xFFFF) - AAC_NUM_MGT_FIB;
 340                 /*
 341                  *      NOTE:
 342                  *      All these overrides are based on a fixed internal
 343                  *      knowledge and understanding of existing adapters,
 344                  *      acbsize should be set with caution.
 345                  */
 346                 if (acbsize == 512) {
 347                         host->max_sectors = AAC_MAX_32BIT_SGBCOUNT;
 348                         dev->max_fib_size = 512;
 349                         dev->sg_tablesize = host->sg_tablesize
 350                           = (512 - sizeof(struct aac_fibhdr)
 351                             - sizeof(struct aac_write) + sizeof(struct sgentry))
 352                              / sizeof(struct sgentry);
 353                         host->can_queue = AAC_NUM_IO_FIB;
 354                 } else if (acbsize == 2048) {
 355                         host->max_sectors = 512;
 356                         dev->max_fib_size = 2048;
 357                         host->sg_tablesize = 65;
 358                         dev->sg_tablesize = 81;
 359                         host->can_queue = 512 - AAC_NUM_MGT_FIB;
 360                 } else if (acbsize == 4096) {
 361                         host->max_sectors = 1024;
 362                         dev->max_fib_size = 4096;
 363                         host->sg_tablesize = 129;
 364                         dev->sg_tablesize = 166;
 365                         host->can_queue = 256 - AAC_NUM_MGT_FIB;
 366                 } else if (acbsize == 8192) {
 367                         host->max_sectors = 2048;
 368                         dev->max_fib_size = 8192;
 369                         host->sg_tablesize = 257;
 370                         dev->sg_tablesize = 337;
 371                         host->can_queue = 128 - AAC_NUM_MGT_FIB;
 372                 } else if (acbsize > 0) {
 373                         printk("Illegal acbsize=%d ignored\n", acbsize);
 374                 }
 375         }
 376         {
 377
 378                 if (numacb > 0) {
 379                         if (numacb < host->can_queue)
 380                                 host->can_queue = numacb;
 381                         else
 382                                 printk("numacb=%d ignored\n", numacb);
 383                 }
 384         }
 385
 386         /*
 387          *      Ok now init the communication subsystem
 388          */
 389
 390         dev->queues = kzalloc(sizeof(struct aac_queue_block), GFP_KERNEL);
 391         if (dev->queues == NULL) {
 392                 printk(KERN_ERR "Error could not allocate comm region.\n");
 393                 return NULL;
 394         }
 395
 396         if (aac_comm_init(dev)<0){
 397                 kfree(dev->queues);
 398                 return NULL;
 399         }
 400         /*
 401          *      Initialize the list of fibs
 402          */
 403         if (aac_fib_setup(dev) < 0) {
 404                 kfree(dev->queues);
 405                 return NULL;
 406         }
 407
 408         INIT_LIST_HEAD(&dev->fib_list);
 409
 410         return dev;
 411 }
 412
 413