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