drivers/scsi/aacraid/commsup.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  *  commsup.c
  28  *
  29  * Abstract: Contain all routines that are required for FSA host/adapter
  30  *    communication.
  31  *
  32  */
  33
  34 #include <linux/kernel.h>
  35 #include <linux/init.h>
  36 #include <linux/types.h>
  37 #include <linux/sched.h>
  38 #include <linux/pci.h>
  39 #include <linux/spinlock.h>
  40 #include <linux/slab.h>
  41 #include <linux/completion.h>
  42 #include <linux/blkdev.h>
  43 #include <linux/delay.h>
  44 #include <linux/kthread.h>
  45 #include <linux/interrupt.h>
  46 #include <linux/semaphore.h>
  47 #include <linux/bcd.h>
  48 #include <scsi/scsi.h>
  49 #include <scsi/scsi_host.h>
  50 #include <scsi/scsi_device.h>
  51 #include <scsi/scsi_cmnd.h>
  52
  53 #include "aacraid.h"
  54
  55 /**
  56  *      fib_map_alloc           -       allocate the fib objects
  57  *      @dev: Adapter to allocate for
  58  *
  59  *      Allocate and map the shared PCI space for the FIB blocks used to
  60  *      talk to the Adaptec firmware.
  61  */
  62
  63 static int fib_map_alloc(struct aac_dev *dev)
  64 {
  65         if (dev->max_fib_size > AAC_MAX_NATIVE_SIZE)
  66                 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE;
  67         else
  68                 dev->max_cmd_size = dev->max_fib_size;
  69         if (dev->max_fib_size < AAC_MAX_NATIVE_SIZE) {
  70                 dev->max_cmd_size = AAC_MAX_NATIVE_SIZE;
  71         } else {
  72                 dev->max_cmd_size = dev->max_fib_size;
  73         }
  74
  75         dprintk((KERN_INFO
  76           "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), %p)\n",
  77           dev->pdev, dev->max_cmd_size, dev->scsi_host_ptr->can_queue,
  78           AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
  79         dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
  80                 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr))
  81                 * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 - 1),
  82                 &dev->hw_fib_pa);
  83         if (dev->hw_fib_va == NULL)
  84                 return -ENOMEM;
  85         return 0;
  86 }
  87
  88 /**
  89  *      aac_fib_map_free                -       free the fib objects
  90  *      @dev: Adapter to free
  91  *
  92  *      Free the PCI mappings and the memory allocated for FIB blocks
  93  *      on this adapter.
  94  */
  95
  96 void aac_fib_map_free(struct aac_dev *dev)
  97 {
  98         size_t alloc_size;
  99         size_t fib_size;
 100         int num_fibs;
 101
 102         if(!dev->hw_fib_va || !dev->max_cmd_size)
 103                 return;
 104
 105         num_fibs = dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB;
 106         fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
 107         alloc_size = fib_size * num_fibs + ALIGN32 - 1;
 108
 109         pci_free_consistent(dev->pdev, alloc_size, dev->hw_fib_va,
 110                                                         dev->hw_fib_pa);
 111
 112         dev->hw_fib_va = NULL;
 113         dev->hw_fib_pa = 0;
 114 }
 115
 116 void aac_fib_vector_assign(struct aac_dev *dev)
 117 {
 118         u32 i = 0;
 119         u32 vector = 1;
 120         struct fib *fibptr = NULL;
 121
 122         for (i = 0, fibptr = &dev->fibs[i];
 123                 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
 124                 i++, fibptr++) {
 125                 if ((dev->max_msix == 1) ||
 126                   (i > ((dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1)
 127                         - dev->vector_cap))) {
 128                         fibptr->vector_no = 0;
 129                 } else {
 130                         fibptr->vector_no = vector;
 131                         vector++;
 132                         if (vector == dev->max_msix)
 133                                 vector = 1;
 134                 }
 135         }
 136 }
 137
 138 /**
 139  *      aac_fib_setup   -       setup the fibs
 140  *      @dev: Adapter to set up
 141  *
 142  *      Allocate the PCI space for the fibs, map it and then initialise the
 143  *      fib area, the unmapped fib data and also the free list
 144  */
 145
 146 int aac_fib_setup(struct aac_dev * dev)
 147 {
 148         struct fib *fibptr;
 149         struct hw_fib *hw_fib;
 150         dma_addr_t hw_fib_pa;
 151         int i;
 152         u32 max_cmds;
 153
 154         while (((i = fib_map_alloc(dev)) == -ENOMEM)
 155          && (dev->scsi_host_ptr->can_queue > (64 - AAC_NUM_MGT_FIB))) {
 156                 max_cmds = (dev->scsi_host_ptr->can_queue+AAC_NUM_MGT_FIB) >> 1;
 157                 dev->scsi_host_ptr->can_queue = max_cmds - AAC_NUM_MGT_FIB;
 158                 if (dev->comm_interface != AAC_COMM_MESSAGE_TYPE3)
 159                         dev->init->r7.max_io_commands = cpu_to_le32(max_cmds);
 160         }
 161         if (i<0)
 162                 return -ENOMEM;
 163
 164         memset(dev->hw_fib_va, 0,
 165                 (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr)) *
 166                 (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB));
 167
 168         /* 32 byte alignment for PMC */
 169         hw_fib_pa = (dev->hw_fib_pa + (ALIGN32 - 1)) & ~(ALIGN32 - 1);
 170         hw_fib    = (struct hw_fib *)((unsigned char *)dev->hw_fib_va +
 171                                         (hw_fib_pa - dev->hw_fib_pa));
 172
 173         /* add Xport header */
 174         hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
 175                 sizeof(struct aac_fib_xporthdr));
 176         hw_fib_pa += sizeof(struct aac_fib_xporthdr);
 177
 178         /*
 179          *      Initialise the fibs
 180          */
 181         for (i = 0, fibptr = &dev->fibs[i];
 182                 i < (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB);
 183                 i++, fibptr++)
 184         {
 185                 fibptr->flags = 0;
 186                 fibptr->size = sizeof(struct fib);
 187                 fibptr->dev = dev;
 188                 fibptr->hw_fib_va = hw_fib;
 189                 fibptr->data = (void *) fibptr->hw_fib_va->data;
 190                 fibptr->next = fibptr+1;        /* Forward chain the fibs */
 191                 sema_init(&fibptr->event_wait, 0);
 192                 spin_lock_init(&fibptr->event_lock);
 193                 hw_fib->header.XferState = cpu_to_le32(0xffffffff);
 194                 hw_fib->header.SenderSize =
 195                         cpu_to_le16(dev->max_fib_size); /* ?? max_cmd_size */
 196                 fibptr->hw_fib_pa = hw_fib_pa;
 197                 fibptr->hw_sgl_pa = hw_fib_pa +
 198                         offsetof(struct aac_hba_cmd_req, sge[2]);
 199                 /*
 200                  * one element is for the ptr to the separate sg list,
 201                  * second element for 32 byte alignment
 202                  */
 203                 fibptr->hw_error_pa = hw_fib_pa +
 204                         offsetof(struct aac_native_hba, resp.resp_bytes[0]);
 205
 206                 hw_fib = (struct hw_fib *)((unsigned char *)hw_fib +
 207                         dev->max_cmd_size + sizeof(struct aac_fib_xporthdr));
 208                 hw_fib_pa = hw_fib_pa +
 209                         dev->max_cmd_size + sizeof(struct aac_fib_xporthdr);
 210         }
 211
 212         /*
 213          *Assign vector numbers to fibs
 214          */
 215         aac_fib_vector_assign(dev);
 216
 217         /*
 218          *      Add the fib chain to the free list
 219          */
 220         dev->fibs[dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB - 1].next = NULL;
 221         /*
 222         *       Set 8 fibs aside for management tools
 223         */
 224         dev->free_fib = &dev->fibs[dev->scsi_host_ptr->can_queue];
 225         return 0;
 226 }
 227
 228 /**
 229  *      aac_fib_alloc_tag-allocate a fib using tags
 230  *      @dev: Adapter to allocate the fib for
 231  *
 232  *      Allocate a fib from the adapter fib pool using tags
 233  *      from the blk layer.
 234  */
 235
 236 struct fib *aac_fib_alloc_tag(struct aac_dev *dev, struct scsi_cmnd *scmd)
 237 {
 238         struct fib *fibptr;
 239
 240         fibptr = &dev->fibs[scmd->request->tag];
 241         /*
 242          *      Null out fields that depend on being zero at the start of
 243          *      each I/O
 244          */
 245         fibptr->hw_fib_va->header.XferState = 0;
 246         fibptr->type = FSAFS_NTC_FIB_CONTEXT;
 247         fibptr->callback_data = NULL;
 248         fibptr->callback = NULL;
 249
 250         return fibptr;
 251 }
 252
 253 /**
 254  *      aac_fib_alloc   -       allocate a fib
 255  *      @dev: Adapter to allocate the fib for
 256  *
 257  *      Allocate a fib from the adapter fib pool. If the pool is empty we
 258  *      return NULL.
 259  */
 260
 261 struct fib *aac_fib_alloc(struct aac_dev *dev)
 262 {
 263         struct fib * fibptr;
 264         unsigned long flags;
 265         spin_lock_irqsave(&dev->fib_lock, flags);
 266         fibptr = dev->free_fib;
 267         if(!fibptr){
 268                 spin_unlock_irqrestore(&dev->fib_lock, flags);
 269                 return fibptr;
 270         }
 271         dev->free_fib = fibptr->next;
 272         spin_unlock_irqrestore(&dev->fib_lock, flags);
 273         /*
 274          *      Set the proper node type code and node byte size
 275          */
 276         fibptr->type = FSAFS_NTC_FIB_CONTEXT;
 277         fibptr->size = sizeof(struct fib);
 278         /*
 279          *      Null out fields that depend on being zero at the start of
 280          *      each I/O
 281          */
 282         fibptr->hw_fib_va->header.XferState = 0;
 283         fibptr->flags = 0;
 284         fibptr->callback = NULL;
 285         fibptr->callback_data = NULL;
 286
 287         return fibptr;
 288 }
 289
 290 /**
 291  *      aac_fib_free    -       free a fib
 292  *      @fibptr: fib to free up
 293  *
 294  *      Frees up a fib and places it on the appropriate queue
 295  */
 296
 297 void aac_fib_free(struct fib *fibptr)
 298 {
 299         unsigned long flags;
 300
 301         if (fibptr->done == 2)
 302                 return;
 303
 304         spin_lock_irqsave(&fibptr->dev->fib_lock, flags);
 305         if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
 306                 aac_config.fib_timeouts++;
 307         if (!(fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) &&
 308                 fibptr->hw_fib_va->header.XferState != 0) {
 309                 printk(KERN_WARNING "aac_fib_free, XferState != 0, fibptr = 0x%p, XferState = 0x%x\n",
 310                          (void*)fibptr,
 311                          le32_to_cpu(fibptr->hw_fib_va->header.XferState));
 312         }
 313         fibptr->next = fibptr->dev->free_fib;
 314         fibptr->dev->free_fib = fibptr;
 315         spin_unlock_irqrestore(&fibptr->dev->fib_lock, flags);
 316 }
 317
 318 /**
 319  *      aac_fib_init    -       initialise a fib
 320  *      @fibptr: The fib to initialize
 321  *
 322  *      Set up the generic fib fields ready for use
 323  */
 324
 325 void aac_fib_init(struct fib *fibptr)
 326 {
 327         struct hw_fib *hw_fib = fibptr->hw_fib_va;
 328
 329         memset(&hw_fib->header, 0, sizeof(struct aac_fibhdr));
 330         hw_fib->header.StructType = FIB_MAGIC;
 331         hw_fib->header.Size = cpu_to_le16(fibptr->dev->max_fib_size);
 332         hw_fib->header.XferState = cpu_to_le32(HostOwned | FibInitialized | FibEmpty | FastResponseCapable);
 333         hw_fib->header.u.ReceiverFibAddress = cpu_to_le32(fibptr->hw_fib_pa);
 334         hw_fib->header.SenderSize = cpu_to_le16(fibptr->dev->max_fib_size);
 335 }
 336
 337 /**
 338  *      fib_deallocate          -       deallocate a fib
 339  *      @fibptr: fib to deallocate
 340  *
 341  *      Will deallocate and return to the free pool the FIB pointed to by the
 342  *      caller.
 343  */
 344
 345 static void fib_dealloc(struct fib * fibptr)
 346 {
 347         struct hw_fib *hw_fib = fibptr->hw_fib_va;
 348         hw_fib->header.XferState = 0;
 349 }
 350
 351 /*
 352  *      Commuication primitives define and support the queuing method we use to
 353  *      support host to adapter commuication. All queue accesses happen through
 354  *      these routines and are the only routines which have a knowledge of the
 355  *       how these queues are implemented.
 356  */
 357
 358 /**
 359  *      aac_get_entry           -       get a queue entry
 360  *      @dev: Adapter
 361  *      @qid: Queue Number
 362  *      @entry: Entry return
 363  *      @index: Index return
 364  *      @nonotify: notification control
 365  *
 366  *      With a priority the routine returns a queue entry if the queue has free entries. If the queue
 367  *      is full(no free entries) than no entry is returned and the function returns 0 otherwise 1 is
 368  *      returned.
 369  */
 370
 371 static int aac_get_entry (struct aac_dev * dev, u32 qid, struct aac_entry **entry, u32 * index, unsigned long *nonotify)
 372 {
 373         struct aac_queue * q;
 374         unsigned long idx;
 375
 376         /*
 377          *      All of the queues wrap when they reach the end, so we check
 378          *      to see if they have reached the end and if they have we just
 379          *      set the index back to zero. This is a wrap. You could or off
 380          *      the high bits in all updates but this is a bit faster I think.
 381          */
 382
 383         q = &dev->queues->queue[qid];
 384
 385         idx = *index = le32_to_cpu(*(q->headers.producer));
 386         /* Interrupt Moderation, only interrupt for first two entries */
 387         if (idx != le32_to_cpu(*(q->headers.consumer))) {
 388                 if (--idx == 0) {
 389                         if (qid == AdapNormCmdQueue)
 390                                 idx = ADAP_NORM_CMD_ENTRIES;
 391                         else
 392                                 idx = ADAP_NORM_RESP_ENTRIES;
 393                 }
 394                 if (idx != le32_to_cpu(*(q->headers.consumer)))
 395                         *nonotify = 1;
 396         }
 397
 398         if (qid == AdapNormCmdQueue) {
 399                 if (*index >= ADAP_NORM_CMD_ENTRIES)
 400                         *index = 0; /* Wrap to front of the Producer Queue. */
 401         } else {
 402                 if (*index >= ADAP_NORM_RESP_ENTRIES)
 403                         *index = 0; /* Wrap to front of the Producer Queue. */
 404         }
 405
 406         /* Queue is full */
 407         if ((*index + 1) == le32_to_cpu(*(q->headers.consumer))) {
 408                 printk(KERN_WARNING "Queue %d full, %u outstanding.\n",
 409                                 qid, atomic_read(&q->numpending));
 410                 return 0;
 411         } else {
 412                 *entry = q->base + *index;
 413                 return 1;
 414         }
 415 }
 416
 417 /**
 418  *      aac_queue_get           -       get the next free QE
 419  *      @dev: Adapter
 420  *      @index: Returned index
 421  *      @priority: Priority of fib
 422  *      @fib: Fib to associate with the queue entry
 423  *      @wait: Wait if queue full
 424  *      @fibptr: Driver fib object to go with fib
 425  *      @nonotify: Don't notify the adapter
 426  *
 427  *      Gets the next free QE off the requested priorty adapter command
 428  *      queue and associates the Fib with the QE. The QE represented by
 429  *      index is ready to insert on the queue when this routine returns
 430  *      success.
 431  */
 432
 433 int aac_queue_get(struct aac_dev * dev, u32 * index, u32 qid, struct hw_fib * hw_fib, int wait, struct fib * fibptr, unsigned long *nonotify)
 434 {
 435         struct aac_entry * entry = NULL;
 436         int map = 0;
 437
 438         if (qid == AdapNormCmdQueue) {
 439                 /*  if no entries wait for some if caller wants to */
 440                 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
 441                         printk(KERN_ERR "GetEntries failed\n");
 442                 }
 443                 /*
 444                  *      Setup queue entry with a command, status and fib mapped
 445                  */
 446                 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
 447                 map = 1;
 448         } else {
 449                 while (!aac_get_entry(dev, qid, &entry, index, nonotify)) {
 450                         /* if no entries wait for some if caller wants to */
 451                 }
 452                 /*
 453                  *      Setup queue entry with command, status and fib mapped
 454                  */
 455                 entry->size = cpu_to_le32(le16_to_cpu(hw_fib->header.Size));
 456                 entry->addr = hw_fib->header.SenderFibAddress;
 457                         /* Restore adapters pointer to the FIB */
 458                 hw_fib->header.u.ReceiverFibAddress = hw_fib->header.SenderFibAddress;  /* Let the adapter now where to find its data */
 459                 map = 0;
 460         }
 461         /*
 462          *      If MapFib is true than we need to map the Fib and put pointers
 463          *      in the queue entry.
 464          */
 465         if (map)
 466                 entry->addr = cpu_to_le32(fibptr->hw_fib_pa);
 467         return 0;
 468 }
 469
 470 #ifdef CONFIG_EEH
 471 static inline int aac_check_eeh_failure(struct aac_dev *dev)
 472 {
 473         /* Check for an EEH failure for the given
 474          * device node. Function eeh_dev_check_failure()
 475          * returns 0 if there has not been an EEH error
 476          * otherwise returns a non-zero value.
 477          *
 478          * Need to be called before any PCI operation,
 479          * i.e.,before aac_adapter_check_health()
 480          */
 481         struct eeh_dev *edev = pci_dev_to_eeh_dev(dev->pdev);
 482
 483         if (eeh_dev_check_failure(edev)) {
 484                 /* The EEH mechanisms will handle this
 485                  * error and reset the device if
 486                  * necessary.
 487                  */
 488                 return 1;
 489         }
 490         return 0;
 491 }
 492 #else
 493 static inline int aac_check_eeh_failure(struct aac_dev *dev)
 494 {
 495         return 0;
 496 }
 497 #endif
 498
 499 /*
 500  *      Define the highest level of host to adapter communication routines.
 501  *      These routines will support host to adapter FS commuication. These
 502  *      routines have no knowledge of the commuication method used. This level
 503  *      sends and receives FIBs. This level has no knowledge of how these FIBs
 504  *      get passed back and forth.
 505  */
 506
 507 /**
 508  *      aac_fib_send    -       send a fib to the adapter
 509  *      @command: Command to send
 510  *      @fibptr: The fib
 511  *      @size: Size of fib data area
 512  *      @priority: Priority of Fib
 513  *      @wait: Async/sync select
 514  *      @reply: True if a reply is wanted
 515  *      @callback: Called with reply
 516  *      @callback_data: Passed to callback
 517  *
 518  *      Sends the requested FIB to the adapter and optionally will wait for a
 519  *      response FIB. If the caller does not wish to wait for a response than
 520  *      an event to wait on must be supplied. This event will be set when a
 521  *      response FIB is received from the adapter.
 522  */
 523
 524 int aac_fib_send(u16 command, struct fib *fibptr, unsigned long size,
 525                 int priority, int wait, int reply, fib_callback callback,
 526                 void *callback_data)
 527 {
 528         struct aac_dev * dev = fibptr->dev;
 529         struct hw_fib * hw_fib = fibptr->hw_fib_va;
 530         unsigned long flags = 0;
 531         unsigned long mflags = 0;
 532         unsigned long sflags = 0;
 533
 534         if (!(hw_fib->header.XferState & cpu_to_le32(HostOwned)))
 535                 return -EBUSY;
 536
 537         if (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed))
 538                 return -EINVAL;
 539
 540         /*
 541          *      There are 5 cases with the wait and response requested flags.
 542          *      The only invalid cases are if the caller requests to wait and
 543          *      does not request a response and if the caller does not want a
 544          *      response and the Fib is not allocated from pool. If a response
 545          *      is not requesed the Fib will just be deallocaed by the DPC
 546          *      routine when the response comes back from the adapter. No
 547          *      further processing will be done besides deleting the Fib. We
 548          *      will have a debug mode where the adapter can notify the host
 549          *      it had a problem and the host can log that fact.
 550          */
 551         fibptr->flags = 0;
 552         if (wait && !reply) {
 553                 return -EINVAL;
 554         } else if (!wait && reply) {
 555                 hw_fib->header.XferState |= cpu_to_le32(Async | ResponseExpected);
 556                 FIB_COUNTER_INCREMENT(aac_config.AsyncSent);
 557         } else if (!wait && !reply) {
 558                 hw_fib->header.XferState |= cpu_to_le32(NoResponseExpected);
 559                 FIB_COUNTER_INCREMENT(aac_config.NoResponseSent);
 560         } else if (wait && reply) {
 561                 hw_fib->header.XferState |= cpu_to_le32(ResponseExpected);
 562                 FIB_COUNTER_INCREMENT(aac_config.NormalSent);
 563         }
 564         /*
 565          *      Map the fib into 32bits by using the fib number
 566          */
 567
 568         hw_fib->header.SenderFibAddress =
 569                 cpu_to_le32(((u32)(fibptr - dev->fibs)) << 2);
 570
 571         /* use the same shifted value for handle to be compatible
 572          * with the new native hba command handle
 573          */
 574         hw_fib->header.Handle =
 575                 cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
 576
 577         /*
 578          *      Set FIB state to indicate where it came from and if we want a
 579          *      response from the adapter. Also load the command from the
 580          *      caller.
 581          *
 582          *      Map the hw fib pointer as a 32bit value
 583          */
 584         hw_fib->header.Command = cpu_to_le16(command);
 585         hw_fib->header.XferState |= cpu_to_le32(SentFromHost);
 586         /*
 587          *      Set the size of the Fib we want to send to the adapter
 588          */
 589         hw_fib->header.Size = cpu_to_le16(sizeof(struct aac_fibhdr) + size);
 590         if (le16_to_cpu(hw_fib->header.Size) > le16_to_cpu(hw_fib->header.SenderSize)) {
 591                 return -EMSGSIZE;
 592         }
 593         /*
 594          *      Get a queue entry connect the FIB to it and send an notify
 595          *      the adapter a command is ready.
 596          */
 597         hw_fib->header.XferState |= cpu_to_le32(NormalPriority);
 598
 599         /*
 600          *      Fill in the Callback and CallbackContext if we are not
 601          *      going to wait.
 602          */
 603         if (!wait) {
 604                 fibptr->callback = callback;
 605                 fibptr->callback_data = callback_data;
 606                 fibptr->flags = FIB_CONTEXT_FLAG;
 607         }
 608
 609         fibptr->done = 0;
 610
 611         FIB_COUNTER_INCREMENT(aac_config.FibsSent);
 612
 613         dprintk((KERN_DEBUG "Fib contents:.\n"));
 614         dprintk((KERN_DEBUG "  Command =               %d.\n", le32_to_cpu(hw_fib->header.Command)));
 615         dprintk((KERN_DEBUG "  SubCommand =            %d.\n", le32_to_cpu(((struct aac_query_mount *)fib_data(fibptr))->command)));
 616         dprintk((KERN_DEBUG "  XferState  =            %x.\n", le32_to_cpu(hw_fib->header.XferState)));
 617         dprintk((KERN_DEBUG "  hw_fib va being sent=%p\n",fibptr->hw_fib_va));
 618         dprintk((KERN_DEBUG "  hw_fib pa being sent=%lx\n",(ulong)fibptr->hw_fib_pa));
 619         dprintk((KERN_DEBUG "  fib being sent=%p\n",fibptr));
 620
 621         if (!dev->queues)
 622                 return -EBUSY;
 623
 624         if (wait) {
 625
 626                 spin_lock_irqsave(&dev->manage_lock, mflags);
 627                 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
 628                         printk(KERN_INFO "No management Fibs Available:%d\n",
 629                                                 dev->management_fib_count);
 630                         spin_unlock_irqrestore(&dev->manage_lock, mflags);
 631                         return -EBUSY;
 632                 }
 633                 dev->management_fib_count++;
 634                 spin_unlock_irqrestore(&dev->manage_lock, mflags);
 635                 spin_lock_irqsave(&fibptr->event_lock, flags);
 636         }
 637
 638         if (dev->sync_mode) {
 639                 if (wait)
 640                         spin_unlock_irqrestore(&fibptr->event_lock, flags);
 641                 spin_lock_irqsave(&dev->sync_lock, sflags);
 642                 if (dev->sync_fib) {
 643                         list_add_tail(&fibptr->fiblink, &dev->sync_fib_list);
 644                         spin_unlock_irqrestore(&dev->sync_lock, sflags);
 645                 } else {
 646                         dev->sync_fib = fibptr;
 647                         spin_unlock_irqrestore(&dev->sync_lock, sflags);
 648                         aac_adapter_sync_cmd(dev, SEND_SYNCHRONOUS_FIB,
 649                                 (u32)fibptr->hw_fib_pa, 0, 0, 0, 0, 0,
 650                                 NULL, NULL, NULL, NULL, NULL);
 651                 }
 652                 if (wait) {
 653                         fibptr->flags |= FIB_CONTEXT_FLAG_WAIT;
 654                         if (down_interruptible(&fibptr->event_wait)) {
 655                                 fibptr->flags &= ~FIB_CONTEXT_FLAG_WAIT;
 656                                 return -EFAULT;
 657                         }
 658                         return 0;
 659                 }
 660                 return -EINPROGRESS;
 661         }
 662
 663         if (aac_adapter_deliver(fibptr) != 0) {
 664                 printk(KERN_ERR "aac_fib_send: returned -EBUSY\n");
 665                 if (wait) {
 666                         spin_unlock_irqrestore(&fibptr->event_lock, flags);
 667                         spin_lock_irqsave(&dev->manage_lock, mflags);
 668                         dev->management_fib_count--;
 669                         spin_unlock_irqrestore(&dev->manage_lock, mflags);
 670                 }
 671                 return -EBUSY;
 672         }
 673
 674
 675         /*
 676          *      If the caller wanted us to wait for response wait now.
 677          */
 678
 679         if (wait) {
 680                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
 681                 /* Only set for first known interruptable command */
 682                 if (wait < 0) {
 683                         /*
 684                          * *VERY* Dangerous to time out a command, the
 685                          * assumption is made that we have no hope of
 686                          * functioning because an interrupt routing or other
 687                          * hardware failure has occurred.
 688                          */
 689                         unsigned long timeout = jiffies + (180 * HZ); /* 3 minutes */
 690                         while (down_trylock(&fibptr->event_wait)) {
 691                                 int blink;
 692                                 if (time_is_before_eq_jiffies(timeout)) {
 693                                         struct aac_queue * q = &dev->queues->queue[AdapNormCmdQueue];
 694                                         atomic_dec(&q->numpending);
 695                                         if (wait == -1) {
 696                                                 printk(KERN_ERR "aacraid: aac_fib_send: first asynchronous command timed out.\n"
 697                                                   "Usually a result of a PCI interrupt routing problem;\n"
 698                                                   "update mother board BIOS or consider utilizing one of\n"
 699                                                   "the SAFE mode kernel options (acpi, apic etc)\n");
 700                                         }
 701                                         return -ETIMEDOUT;
 702                                 }
 703
 704                                 if (aac_check_eeh_failure(dev))
 705                                         return -EFAULT;
 706
 707                                 if ((blink = aac_adapter_check_health(dev)) > 0) {
 708                                         if (wait == -1) {
 709                                                 printk(KERN_ERR "aacraid: aac_fib_send: adapter blinkLED 0x%x.\n"
 710                                                   "Usually a result of a serious unrecoverable hardware problem\n",
 711                                                   blink);
 712                                         }
 713                                         return -EFAULT;
 714                                 }
 715                                 /*
 716                                  * Allow other processes / CPUS to use core
 717                                  */
 718                                 schedule();
 719                         }
 720                 } else if (down_interruptible(&fibptr->event_wait)) {
 721                         /* Do nothing ... satisfy
 722                          * down_interruptible must_check */
 723                 }
 724
 725                 spin_lock_irqsave(&fibptr->event_lock, flags);
 726                 if (fibptr->done == 0) {
 727                         fibptr->done = 2; /* Tell interrupt we aborted */
 728                         spin_unlock_irqrestore(&fibptr->event_lock, flags);
 729                         return -ERESTARTSYS;
 730                 }
 731                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
 732                 BUG_ON(fibptr->done == 0);
 733
 734                 if(unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
 735                         return -ETIMEDOUT;
 736                 return 0;
 737         }
 738         /*
 739          *      If the user does not want a response than return success otherwise
 740          *      return pending
 741          */
 742         if (reply)
 743                 return -EINPROGRESS;
 744         else
 745                 return 0;
 746 }
 747
 748 int aac_hba_send(u8 command, struct fib *fibptr, fib_callback callback,
 749                 void *callback_data)
 750 {
 751         struct aac_dev *dev = fibptr->dev;
 752         int wait;
 753         unsigned long flags = 0;
 754         unsigned long mflags = 0;
 755
 756         fibptr->flags = (FIB_CONTEXT_FLAG | FIB_CONTEXT_FLAG_NATIVE_HBA);
 757         if (callback) {
 758                 wait = 0;
 759                 fibptr->callback = callback;
 760                 fibptr->callback_data = callback_data;
 761         } else
 762                 wait = 1;
 763
 764
 765         if (command == HBA_IU_TYPE_SCSI_CMD_REQ) {
 766                 struct aac_hba_cmd_req *hbacmd =
 767                         (struct aac_hba_cmd_req *)fibptr->hw_fib_va;
 768
 769                 hbacmd->iu_type = command;
 770                 /* bit1 of request_id must be 0 */
 771                 hbacmd->request_id =
 772                         cpu_to_le32((((u32)(fibptr - dev->fibs)) << 2) + 1);
 773         } else
 774                 return -EINVAL;
 775
 776
 777         if (wait) {
 778                 spin_lock_irqsave(&dev->manage_lock, mflags);
 779                 if (dev->management_fib_count >= AAC_NUM_MGT_FIB) {
 780                         spin_unlock_irqrestore(&dev->manage_lock, mflags);
 781                         return -EBUSY;
 782                 }
 783                 dev->management_fib_count++;
 784                 spin_unlock_irqrestore(&dev->manage_lock, mflags);
 785                 spin_lock_irqsave(&fibptr->event_lock, flags);
 786         }
 787
 788         if (aac_adapter_deliver(fibptr) != 0) {
 789                 if (wait) {
 790                         spin_unlock_irqrestore(&fibptr->event_lock, flags);
 791                         spin_lock_irqsave(&dev->manage_lock, mflags);
 792                         dev->management_fib_count--;
 793                         spin_unlock_irqrestore(&dev->manage_lock, mflags);
 794                 }
 795                 return -EBUSY;
 796         }
 797         FIB_COUNTER_INCREMENT(aac_config.NativeSent);
 798
 799         if (wait) {
 800
 801                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
 802
 803                 if (aac_check_eeh_failure(dev))
 804                         return -EFAULT;
 805
 806                 /* Only set for first known interruptable command */
 807                 if (down_interruptible(&fibptr->event_wait)) {
 808                         fibptr->done = 2;
 809                         up(&fibptr->event_wait);
 810                 }
 811                 spin_lock_irqsave(&fibptr->event_lock, flags);
 812                 if ((fibptr->done == 0) || (fibptr->done == 2)) {
 813                         fibptr->done = 2; /* Tell interrupt we aborted */
 814                         spin_unlock_irqrestore(&fibptr->event_lock, flags);
 815                         return -ERESTARTSYS;
 816                 }
 817                 spin_unlock_irqrestore(&fibptr->event_lock, flags);
 818                 WARN_ON(fibptr->done == 0);
 819
 820                 if (unlikely(fibptr->flags & FIB_CONTEXT_FLAG_TIMED_OUT))
 821                         return -ETIMEDOUT;
 822
 823                 return 0;
 824         }
 825
 826         return -EINPROGRESS;
 827 }
 828
 829 /**
 830  *      aac_consumer_get        -       get the top of the queue
 831  *      @dev: Adapter
 832  *      @q: Queue
 833  *      @entry: Return entry
 834  *
 835  *      Will return a pointer to the entry on the top of the queue requested that
 836  *      we are a consumer of, and return the address of the queue entry. It does
 837  *      not change the state of the queue.
 838  */
 839
 840 int aac_consumer_get(struct aac_dev * dev, struct aac_queue * q, struct aac_entry **entry)
 841 {
 842         u32 index;
 843         int status;
 844         if (le32_to_cpu(*q->headers.producer) == le32_to_cpu(*q->headers.consumer)) {
 845                 status = 0;
 846         } else {
 847                 /*
 848                  *      The consumer index must be wrapped if we have reached
 849                  *      the end of the queue, else we just use the entry
 850                  *      pointed to by the header index
 851                  */
 852                 if (le32_to_cpu(*q->headers.consumer) >= q->entries)
 853                         index = 0;
 854                 else
 855                         index = le32_to_cpu(*q->headers.consumer);
 856                 *entry = q->base + index;
 857                 status = 1;
 858         }
 859         return(status);
 860 }
 861
 862 /**
 863  *      aac_consumer_free       -       free consumer entry
 864  *      @dev: Adapter
 865  *      @q: Queue
 866  *      @qid: Queue ident
 867  *
 868  *      Frees up the current top of the queue we are a consumer of. If the
 869  *      queue was full notify the producer that the queue is no longer full.
 870  */
 871
 872 void aac_consumer_free(struct aac_dev * dev, struct aac_queue *q, u32 qid)
 873 {
 874         int wasfull = 0;
 875         u32 notify;
 876
 877         if ((le32_to_cpu(*q->headers.producer)+1) == le32_to_cpu(*q->headers.consumer))
 878                 wasfull = 1;
 879
 880         if (le32_to_cpu(*q->headers.consumer) >= q->entries)
 881                 *q->headers.consumer = cpu_to_le32(1);
 882         else
 883                 le32_add_cpu(q->headers.consumer, 1);
 884
 885         if (wasfull) {
 886                 switch (qid) {
 887
 888                 case HostNormCmdQueue:
 889                         notify = HostNormCmdNotFull;
 890                         break;
 891                 case HostNormRespQueue:
 892                         notify = HostNormRespNotFull;
 893                         break;
 894                 default:
 895                         BUG();
 896                         return;
 897                 }
 898                 aac_adapter_notify(dev, notify);
 899         }
 900 }
 901
 902 /**
 903  *      aac_fib_adapter_complete        -       complete adapter issued fib
 904  *      @fibptr: fib to complete
 905  *      @size: size of fib
 906  *
 907  *      Will do all necessary work to complete a FIB that was sent from
 908  *      the adapter.
 909  */
 910
 911 int aac_fib_adapter_complete(struct fib *fibptr, unsigned short size)
 912 {
 913         struct hw_fib * hw_fib = fibptr->hw_fib_va;
 914         struct aac_dev * dev = fibptr->dev;
 915         struct aac_queue * q;
 916         unsigned long nointr = 0;
 917         unsigned long qflags;
 918
 919         if (dev->comm_interface == AAC_COMM_MESSAGE_TYPE1 ||
 920                 dev->comm_interface == AAC_COMM_MESSAGE_TYPE2 ||
 921                 dev->comm_interface == AAC_COMM_MESSAGE_TYPE3) {
 922                 kfree(hw_fib);
 923                 return 0;
 924         }
 925
 926         if (hw_fib->header.XferState == 0) {
 927                 if (dev->comm_interface == AAC_COMM_MESSAGE)
 928                         kfree(hw_fib);
 929                 return 0;
 930         }
 931         /*
 932          *      If we plan to do anything check the structure type first.
 933          */
 934         if (hw_fib->header.StructType != FIB_MAGIC &&
 935             hw_fib->header.StructType != FIB_MAGIC2 &&
 936             hw_fib->header.StructType != FIB_MAGIC2_64) {
 937                 if (dev->comm_interface == AAC_COMM_MESSAGE)
 938                         kfree(hw_fib);
 939                 return -EINVAL;
 940         }
 941         /*
 942          *      This block handles the case where the adapter had sent us a
 943          *      command and we have finished processing the command. We
 944          *      call completeFib when we are done processing the command
 945          *      and want to send a response back to the adapter. This will
 946          *      send the completed cdb to the adapter.
 947          */
 948         if (hw_fib->header.XferState & cpu_to_le32(SentFromAdapter)) {
 949                 if (dev->comm_interface == AAC_COMM_MESSAGE) {
 950                         kfree (hw_fib);
 951                 } else {
 952                         u32 index;
 953                         hw_fib->header.XferState |= cpu_to_le32(HostProcessed);
 954                         if (size) {
 955                                 size += sizeof(struct aac_fibhdr);
 956                                 if (size > le16_to_cpu(hw_fib->header.SenderSize))
 957                                         return -EMSGSIZE;
 958                                 hw_fib->header.Size = cpu_to_le16(size);
 959                         }
 960                         q = &dev->queues->queue[AdapNormRespQueue];
 961                         spin_lock_irqsave(q->lock, qflags);
 962                         aac_queue_get(dev, &index, AdapNormRespQueue, hw_fib, 1, NULL, &nointr);
 963                         *(q->headers.producer) = cpu_to_le32(index + 1);
 964                         spin_unlock_irqrestore(q->lock, qflags);
 965                         if (!(nointr & (int)aac_config.irq_mod))
 966                                 aac_adapter_notify(dev, AdapNormRespQueue);
 967                 }
 968         } else {
 969                 printk(KERN_WARNING "aac_fib_adapter_complete: "
 970                         "Unknown xferstate detected.\n");
 971                 BUG();
 972         }
 973         return 0;
 974 }
 975
 976 /**
 977  *      aac_fib_complete        -       fib completion handler
 978  *      @fib: FIB to complete
 979  *
 980  *      Will do all necessary work to complete a FIB.
 981  */
 982
 983 int aac_fib_complete(struct fib *fibptr)
 984 {
 985         struct hw_fib * hw_fib = fibptr->hw_fib_va;
 986
 987         if (fibptr->flags & FIB_CONTEXT_FLAG_NATIVE_HBA) {
 988                 fib_dealloc(fibptr);
 989                 return 0;
 990         }
 991
 992         /*
 993          *      Check for a fib which has already been completed or with a
 994          *      status wait timeout
 995          */
 996
 997         if (hw_fib->header.XferState == 0 || fibptr->done == 2)
 998                 return 0;
 999         /*
1000          *      If we plan to do anything check the structure type first.
1001          */
1002
1003         if (hw_fib->header.StructType != FIB_MAGIC &&
1004             hw_fib->header.StructType != FIB_MAGIC2 &&
1005             hw_fib->header.StructType != FIB_MAGIC2_64)
1006                 return -EINVAL;
1007         /*
1008          *      This block completes a cdb which orginated on the host and we
1009          *      just need to deallocate the cdb or reinit it. At this point the
1010          *      command is complete that we had sent to the adapter and this
1011          *      cdb could be reused.
1012          */
1013
1014         if((hw_fib->header.XferState & cpu_to_le32(SentFromHost)) &&
1015                 (hw_fib->header.XferState & cpu_to_le32(AdapterProcessed)))
1016         {
1017                 fib_dealloc(fibptr);
1018         }
1019         else if(hw_fib->header.XferState & cpu_to_le32(SentFromHost))
1020         {
1021                 /*
1022                  *      This handles the case when the host has aborted the I/O
1023                  *      to the adapter because the adapter is not responding
1024                  */
1025                 fib_dealloc(fibptr);
1026         } else if(hw_fib->header.XferState & cpu_to_le32(HostOwned)) {
1027                 fib_dealloc(fibptr);
1028         } else {
1029                 BUG();
1030         }
1031         return 0;
1032 }
1033
1034 /**
1035  *      aac_printf      -       handle printf from firmware
1036  *      @dev: Adapter
1037  *      @val: Message info
1038  *
1039  *      Print a message passed to us by the controller firmware on the
1040  *      Adaptec board
1041  */
1042
1043 void aac_printf(struct aac_dev *dev, u32 val)
1044 {
1045         char *cp = dev->printfbuf;
1046         if (dev->printf_enabled)
1047         {
1048                 int length = val & 0xffff;
1049                 int level = (val >> 16) & 0xffff;
1050
1051                 /*
1052                  *      The size of the printfbuf is set in port.c
1053                  *      There is no variable or define for it
1054                  */
1055                 if (length > 255)
1056                         length = 255;
1057                 if (cp[length] != 0)
1058                         cp[length] = 0;
1059                 if (level == LOG_AAC_HIGH_ERROR)
1060                         printk(KERN_WARNING "%s:%s", dev->name, cp);
1061                 else
1062                         printk(KERN_INFO "%s:%s", dev->name, cp);
1063         }
1064         memset(cp, 0, 256);
1065 }
1066
1067 static inline int aac_aif_data(struct aac_aifcmd *aifcmd, uint32_t index)
1068 {
1069         return le32_to_cpu(((__le32 *)aifcmd->data)[index]);
1070 }
1071
1072
1073 static void aac_handle_aif_bu(struct aac_dev *dev, struct aac_aifcmd *aifcmd)
1074 {
1075         switch (aac_aif_data(aifcmd, 1)) {
1076         case AifBuCacheDataLoss:
1077                 if (aac_aif_data(aifcmd, 2))
1078                         dev_info(&dev->pdev->dev, "Backup unit had cache data loss - [%d]\n",
1079                         aac_aif_data(aifcmd, 2));
1080                 else
1081                         dev_info(&dev->pdev->dev, "Backup Unit had cache data loss\n");
1082                 break;
1083         case AifBuCacheDataRecover:
1084                 if (aac_aif_data(aifcmd, 2))
1085                         dev_info(&dev->pdev->dev, "DDR cache data recovered successfully - [%d]\n",
1086                         aac_aif_data(aifcmd, 2));
1087                 else
1088                         dev_info(&dev->pdev->dev, "DDR cache data recovered successfully\n");
1089                 break;
1090         }
1091 }
1092
1093 /**
1094  *      aac_handle_aif          -       Handle a message from the firmware
1095  *      @dev: Which adapter this fib is from
1096  *      @fibptr: Pointer to fibptr from adapter
1097  *
1098  *      This routine handles a driver notify fib from the adapter and
1099  *      dispatches it to the appropriate routine for handling.
1100  */
1101
1102 #define AIF_SNIFF_TIMEOUT       (500*HZ)
1103 static void aac_handle_aif(struct aac_dev * dev, struct fib * fibptr)
1104 {
1105         struct hw_fib * hw_fib = fibptr->hw_fib_va;
1106         struct aac_aifcmd * aifcmd = (struct aac_aifcmd *)hw_fib->data;
1107         u32 channel, id, lun, container;
1108         struct scsi_device *device;
1109         enum {
1110                 NOTHING,
1111                 DELETE,
1112                 ADD,
1113                 CHANGE
1114         } device_config_needed = NOTHING;
1115
1116         /* Sniff for container changes */
1117
1118         if (!dev || !dev->fsa_dev)
1119                 return;
1120         container = channel = id = lun = (u32)-1;
1121
1122         /*
1123          *      We have set this up to try and minimize the number of
1124          * re-configures that take place. As a result of this when
1125          * certain AIF's come in we will set a flag waiting for another
1126          * type of AIF before setting the re-config flag.
1127          */
1128         switch (le32_to_cpu(aifcmd->command)) {
1129         case AifCmdDriverNotify:
1130                 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
1131                 case AifRawDeviceRemove:
1132                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1133                         if ((container >> 28)) {
1134                                 container = (u32)-1;
1135                                 break;
1136                         }
1137                         channel = (container >> 24) & 0xF;
1138                         if (channel >= dev->maximum_num_channels) {
1139                                 container = (u32)-1;
1140                                 break;
1141                         }
1142                         id = container & 0xFFFF;
1143                         if (id >= dev->maximum_num_physicals) {
1144                                 container = (u32)-1;
1145                                 break;
1146                         }
1147                         lun = (container >> 16) & 0xFF;
1148                         container = (u32)-1;
1149                         channel = aac_phys_to_logical(channel);
1150                         device_config_needed = DELETE;
1151                         break;
1152
1153                 /*
1154                  *      Morph or Expand complete
1155                  */
1156                 case AifDenMorphComplete:
1157                 case AifDenVolumeExtendComplete:
1158                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1159                         if (container >= dev->maximum_num_containers)
1160                                 break;
1161
1162                         /*
1163                          *      Find the scsi_device associated with the SCSI
1164                          * address. Make sure we have the right array, and if
1165                          * so set the flag to initiate a new re-config once we
1166                          * see an AifEnConfigChange AIF come through.
1167                          */
1168
1169                         if ((dev != NULL) && (dev->scsi_host_ptr != NULL)) {
1170                                 device = scsi_device_lookup(dev->scsi_host_ptr,
1171                                         CONTAINER_TO_CHANNEL(container),
1172                                         CONTAINER_TO_ID(container),
1173                                         CONTAINER_TO_LUN(container));
1174                                 if (device) {
1175                                         dev->fsa_dev[container].config_needed = CHANGE;
1176                                         dev->fsa_dev[container].config_waiting_on = AifEnConfigChange;
1177                                         dev->fsa_dev[container].config_waiting_stamp = jiffies;
1178                                         scsi_device_put(device);
1179                                 }
1180                         }
1181                 }
1182
1183                 /*
1184                  *      If we are waiting on something and this happens to be
1185                  * that thing then set the re-configure flag.
1186                  */
1187                 if (container != (u32)-1) {
1188                         if (container >= dev->maximum_num_containers)
1189                                 break;
1190                         if ((dev->fsa_dev[container].config_waiting_on ==
1191                             le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1192                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1193                                 dev->fsa_dev[container].config_waiting_on = 0;
1194                 } else for (container = 0;
1195                     container < dev->maximum_num_containers; ++container) {
1196                         if ((dev->fsa_dev[container].config_waiting_on ==
1197                             le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1198                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1199                                 dev->fsa_dev[container].config_waiting_on = 0;
1200                 }
1201                 break;
1202
1203         case AifCmdEventNotify:
1204                 switch (le32_to_cpu(((__le32 *)aifcmd->data)[0])) {
1205                 case AifEnBatteryEvent:
1206                         dev->cache_protected =
1207                                 (((__le32 *)aifcmd->data)[1] == cpu_to_le32(3));
1208                         break;
1209                 /*
1210                  *      Add an Array.
1211                  */
1212                 case AifEnAddContainer:
1213                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1214                         if (container >= dev->maximum_num_containers)
1215                                 break;
1216                         dev->fsa_dev[container].config_needed = ADD;
1217                         dev->fsa_dev[container].config_waiting_on =
1218                                 AifEnConfigChange;
1219                         dev->fsa_dev[container].config_waiting_stamp = jiffies;
1220                         break;
1221
1222                 /*
1223                  *      Delete an Array.
1224                  */
1225                 case AifEnDeleteContainer:
1226                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1227                         if (container >= dev->maximum_num_containers)
1228                                 break;
1229                         dev->fsa_dev[container].config_needed = DELETE;
1230                         dev->fsa_dev[container].config_waiting_on =
1231                                 AifEnConfigChange;
1232                         dev->fsa_dev[container].config_waiting_stamp = jiffies;
1233                         break;
1234
1235                 /*
1236                  *      Container change detected. If we currently are not
1237                  * waiting on something else, setup to wait on a Config Change.
1238                  */
1239                 case AifEnContainerChange:
1240                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1241                         if (container >= dev->maximum_num_containers)
1242                                 break;
1243                         if (dev->fsa_dev[container].config_waiting_on &&
1244                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1245                                 break;
1246                         dev->fsa_dev[container].config_needed = CHANGE;
1247                         dev->fsa_dev[container].config_waiting_on =
1248                                 AifEnConfigChange;
1249                         dev->fsa_dev[container].config_waiting_stamp = jiffies;
1250                         break;
1251
1252                 case AifEnConfigChange:
1253                         break;
1254
1255                 case AifEnAddJBOD:
1256                 case AifEnDeleteJBOD:
1257                         container = le32_to_cpu(((__le32 *)aifcmd->data)[1]);
1258                         if ((container >> 28)) {
1259                                 container = (u32)-1;
1260                                 break;
1261                         }
1262                         channel = (container >> 24) & 0xF;
1263                         if (channel >= dev->maximum_num_channels) {
1264                                 container = (u32)-1;
1265                                 break;
1266                         }
1267                         id = container & 0xFFFF;
1268                         if (id >= dev->maximum_num_physicals) {
1269                                 container = (u32)-1;
1270                                 break;
1271                         }
1272                         lun = (container >> 16) & 0xFF;
1273                         container = (u32)-1;
1274                         channel = aac_phys_to_logical(channel);
1275                         device_config_needed =
1276                           (((__le32 *)aifcmd->data)[0] ==
1277                             cpu_to_le32(AifEnAddJBOD)) ? ADD : DELETE;
1278                         if (device_config_needed == ADD) {
1279                                 device = scsi_device_lookup(dev->scsi_host_ptr,
1280                                         channel,
1281                                         id,
1282                                         lun);
1283                                 if (device) {
1284                                         scsi_remove_device(device);
1285                                         scsi_device_put(device);
1286                                 }
1287                         }
1288                         break;
1289
1290                 case AifEnEnclosureManagement:
1291                         /*
1292                          * If in JBOD mode, automatic exposure of new
1293                          * physical target to be suppressed until configured.
1294                          */
1295                         if (dev->jbod)
1296                                 break;
1297                         switch (le32_to_cpu(((__le32 *)aifcmd->data)[3])) {
1298                         case EM_DRIVE_INSERTION:
1299                         case EM_DRIVE_REMOVAL:
1300                         case EM_SES_DRIVE_INSERTION:
1301                         case EM_SES_DRIVE_REMOVAL:
1302                                 container = le32_to_cpu(
1303                                         ((__le32 *)aifcmd->data)[2]);
1304                                 if ((container >> 28)) {
1305                                         container = (u32)-1;
1306                                         break;
1307                                 }
1308                                 channel = (container >> 24) & 0xF;
1309                                 if (channel >= dev->maximum_num_channels) {
1310                                         container = (u32)-1;
1311                                         break;
1312                                 }
1313                                 id = container & 0xFFFF;
1314                                 lun = (container >> 16) & 0xFF;
1315                                 container = (u32)-1;
1316                                 if (id >= dev->maximum_num_physicals) {
1317                                         /* legacy dev_t ? */
1318                                         if ((0x2000 <= id) || lun || channel ||
1319                                           ((channel = (id >> 7) & 0x3F) >=
1320                                           dev->maximum_num_channels))
1321                                                 break;
1322                                         lun = (id >> 4) & 7;
1323                                         id &= 0xF;
1324                                 }
1325                                 channel = aac_phys_to_logical(channel);
1326                                 device_config_needed =
1327                                   ((((__le32 *)aifcmd->data)[3]
1328                                     == cpu_to_le32(EM_DRIVE_INSERTION)) ||
1329                                     (((__le32 *)aifcmd->data)[3]
1330                                     == cpu_to_le32(EM_SES_DRIVE_INSERTION))) ?
1331                                   ADD : DELETE;
1332                                 break;
1333                         }
1334                         case AifBuManagerEvent:
1335                                 aac_handle_aif_bu(dev, aifcmd);
1336                         break;
1337                 }
1338
1339                 /*
1340                  *      If we are waiting on something and this happens to be
1341                  * that thing then set the re-configure flag.
1342                  */
1343                 if (container != (u32)-1) {
1344                         if (container >= dev->maximum_num_containers)
1345                                 break;
1346                         if ((dev->fsa_dev[container].config_waiting_on ==
1347                             le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1348                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1349                                 dev->fsa_dev[container].config_waiting_on = 0;
1350                 } else for (container = 0;
1351                     container < dev->maximum_num_containers; ++container) {
1352                         if ((dev->fsa_dev[container].config_waiting_on ==
1353                             le32_to_cpu(*(__le32 *)aifcmd->data)) &&
1354                          time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT))
1355                                 dev->fsa_dev[container].config_waiting_on = 0;
1356                 }
1357                 break;
1358
1359         case AifCmdJobProgress:
1360                 /*
1361                  *      These are job progress AIF's. When a Clear is being
1362                  * done on a container it is initially created then hidden from
1363                  * the OS. When the clear completes we don't get a config
1364                  * change so we monitor the job status complete on a clear then
1365                  * wait for a container change.
1366                  */
1367
1368                 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1369                     (((__le32 *)aifcmd->data)[6] == ((__le32 *)aifcmd->data)[5] ||
1370                      ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsSuccess))) {
1371                         for (container = 0;
1372                             container < dev->maximum_num_containers;
1373                             ++container) {
1374                                 /*
1375                                  * Stomp on all config sequencing for all
1376                                  * containers?
1377                                  */
1378                                 dev->fsa_dev[container].config_waiting_on =
1379                                         AifEnContainerChange;
1380                                 dev->fsa_dev[container].config_needed = ADD;
1381                                 dev->fsa_dev[container].config_waiting_stamp =
1382                                         jiffies;
1383                         }
1384                 }
1385                 if (((__le32 *)aifcmd->data)[1] == cpu_to_le32(AifJobCtrZero) &&
1386                     ((__le32 *)aifcmd->data)[6] == 0 &&
1387                     ((__le32 *)aifcmd->data)[4] == cpu_to_le32(AifJobStsRunning)) {
1388                         for (container = 0;
1389                             container < dev->maximum_num_containers;
1390                             ++container) {
1391                                 /*
1392                                  * Stomp on all config sequencing for all
1393                                  * containers?
1394                                  */
1395                                 dev->fsa_dev[container].config_waiting_on =
1396                                         AifEnContainerChange;
1397                                 dev->fsa_dev[container].config_needed = DELETE;
1398                                 dev->fsa_dev[container].config_waiting_stamp =
1399                                         jiffies;
1400                         }
1401                 }
1402                 break;
1403         }
1404
1405         container = 0;
1406 retry_next:
1407         if (device_config_needed == NOTHING)
1408         for (; container < dev->maximum_num_containers; ++container) {
1409                 if ((dev->fsa_dev[container].config_waiting_on == 0) &&
1410                         (dev->fsa_dev[container].config_needed != NOTHING) &&
1411                         time_before(jiffies, dev->fsa_dev[container].config_waiting_stamp + AIF_SNIFF_TIMEOUT)) {
1412                         device_config_needed =
1413                                 dev->fsa_dev[container].config_needed;
1414                         dev->fsa_dev[container].config_needed = NOTHING;
1415                         channel = CONTAINER_TO_CHANNEL(container);
1416                         id = CONTAINER_TO_ID(container);
1417                         lun = CONTAINER_TO_LUN(container);
1418                         break;
1419                 }
1420         }
1421         if (device_config_needed == NOTHING)
1422                 return;
1423
1424         /*
1425          *      If we decided that a re-configuration needs to be done,
1426          * schedule it here on the way out the door, please close the door
1427          * behind you.
1428          */
1429
1430         /*
1431          *      Find the scsi_device associated with the SCSI address,
1432          * and mark it as changed, invalidating the cache. This deals
1433          * with changes to existing device IDs.
1434          */
1435
1436         if (!dev || !dev->scsi_host_ptr)
1437                 return;
1438         /*
1439          * force reload of disk info via aac_probe_container
1440          */
1441         if ((channel == CONTAINER_CHANNEL) &&
1442           (device_config_needed != NOTHING)) {
1443                 if (dev->fsa_dev[container].valid == 1)
1444                         dev->fsa_dev[container].valid = 2;
1445                 aac_probe_container(dev, container);
1446         }
1447         device = scsi_device_lookup(dev->scsi_host_ptr, channel, id, lun);
1448         if (device) {
1449                 switch (device_config_needed) {
1450                 case DELETE:
1451 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1452                         scsi_remove_device(device);
1453 #else
1454                         if (scsi_device_online(device)) {
1455                                 scsi_device_set_state(device, SDEV_OFFLINE);
1456                                 sdev_printk(KERN_INFO, device,
1457                                         "Device offlined - %s\n",
1458                                         (channel == CONTAINER_CHANNEL) ?
1459                                                 "array deleted" :
1460                                                 "enclosure services event");
1461                         }
1462 #endif
1463                         break;
1464                 case ADD:
1465                         if (!scsi_device_online(device)) {
1466                                 sdev_printk(KERN_INFO, device,
1467                                         "Device online - %s\n",
1468                                         (channel == CONTAINER_CHANNEL) ?
1469                                                 "array created" :
1470                                                 "enclosure services event");
1471                                 scsi_device_set_state(device, SDEV_RUNNING);
1472                         }
1473                         /* FALLTHRU */
1474                 case CHANGE:
1475                         if ((channel == CONTAINER_CHANNEL)
1476                          && (!dev->fsa_dev[container].valid)) {
1477 #if (defined(AAC_DEBUG_INSTRUMENT_AIF_DELETE))
1478                                 scsi_remove_device(device);
1479 #else
1480                                 if (!scsi_device_online(device))
1481                                         break;
1482                                 scsi_device_set_state(device, SDEV_OFFLINE);
1483                                 sdev_printk(KERN_INFO, device,
1484                                         "Device offlined - %s\n",
1485                                         "array failed");
1486 #endif
1487                                 break;
1488                         }
1489                         scsi_rescan_device(&device->sdev_gendev);
1490
1491                 default:
1492                         break;
1493                 }
1494                 scsi_device_put(device);
1495                 device_config_needed = NOTHING;
1496         }
1497         if (device_config_needed == ADD)
1498                 scsi_add_device(dev->scsi_host_ptr, channel, id, lun);
1499         if (channel == CONTAINER_CHANNEL) {
1500                 container++;
1501                 device_config_needed = NOTHING;
1502                 goto retry_next;
1503         }
1504 }
1505
1506 static int _aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
1507 {
1508         int index, quirks;
1509         int retval;
1510         struct Scsi_Host *host;
1511         struct scsi_device *dev;
1512         struct scsi_cmnd *command;
1513         struct scsi_cmnd *command_list;
1514         int jafo = 0;
1515         int bled;
1516
1517         /*
1518          * Assumptions:
1519          *      - host is locked, unless called by the aacraid thread.
1520          *        (a matter of convenience, due to legacy issues surrounding
1521          *        eh_host_adapter_reset).
1522          *      - in_reset is asserted, so no new i/o is getting to the
1523          *        card.
1524          *      - The card is dead, or will be very shortly ;-/ so no new
1525          *        commands are completing in the interrupt service.
1526          */
1527         host = aac->scsi_host_ptr;
1528         scsi_block_requests(host);
1529         aac_adapter_disable_int(aac);
1530         if (aac->thread->pid != current->pid) {
1531                 spin_unlock_irq(host->host_lock);
1532                 kthread_stop(aac->thread);
1533                 jafo = 1;
1534         }
1535
1536         /*
1537          *      If a positive health, means in a known DEAD PANIC
1538          * state and the adapter could be reset to `try again'.
1539          */
1540         bled = forced ? 0 : aac_adapter_check_health(aac);
1541         retval = aac_adapter_restart(aac, bled, reset_type);
1542
1543         if (retval)
1544                 goto out;
1545
1546         /*
1547          *      Loop through the fibs, close the synchronous FIBS
1548          */
1549         for (retval = 1, index = 0; index < (aac->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB); index++) {
1550                 struct fib *fib = &aac->fibs[index];
1551                 if (!(fib->hw_fib_va->header.XferState & cpu_to_le32(NoResponseExpected | Async)) &&
1552                   (fib->hw_fib_va->header.XferState & cpu_to_le32(ResponseExpected))) {
1553                         unsigned long flagv;
1554                         spin_lock_irqsave(&fib->event_lock, flagv);
1555                         up(&fib->event_wait);
1556                         spin_unlock_irqrestore(&fib->event_lock, flagv);
1557                         schedule();
1558                         retval = 0;
1559                 }
1560         }
1561         /* Give some extra time for ioctls to complete. */
1562         if (retval == 0)
1563                 ssleep(2);
1564         index = aac->cardtype;
1565
1566         /*
1567          * Re-initialize the adapter, first free resources, then carefully
1568          * apply the initialization sequence to come back again. Only risk
1569          * is a change in Firmware dropping cache, it is assumed the caller
1570          * will ensure that i/o is queisced and the card is flushed in that
1571          * case.
1572          */
1573         aac_fib_map_free(aac);
1574         pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, aac->comm_phys);
1575         aac->comm_addr = NULL;
1576         aac->comm_phys = 0;
1577         kfree(aac->queues);
1578         aac->queues = NULL;
1579         aac_free_irq(aac);
1580         kfree(aac->fsa_dev);
1581         aac->fsa_dev = NULL;
1582         quirks = aac_get_driver_ident(index)->quirks;
1583         if (quirks & AAC_QUIRK_31BIT) {
1584                 if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(31)))) ||
1585                   ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(31)))))
1586                         goto out;
1587         } else {
1588                 if (((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32)))) ||
1589                   ((retval = pci_set_consistent_dma_mask(aac->pdev, DMA_BIT_MASK(32)))))
1590                         goto out;
1591         }
1592         if ((retval = (*(aac_get_driver_ident(index)->init))(aac)))
1593                 goto out;
1594         if (quirks & AAC_QUIRK_31BIT)
1595                 if ((retval = pci_set_dma_mask(aac->pdev, DMA_BIT_MASK(32))))
1596                         goto out;
1597         if (jafo) {
1598                 aac->thread = kthread_run(aac_command_thread, aac, "%s",
1599                                           aac->name);
1600                 if (IS_ERR(aac->thread)) {
1601                         retval = PTR_ERR(aac->thread);
1602                         goto out;
1603                 }
1604         }
1605         (void)aac_get_adapter_info(aac);
1606         if ((quirks & AAC_QUIRK_34SG) && (host->sg_tablesize > 34)) {
1607                 host->sg_tablesize = 34;
1608                 host->max_sectors = (host->sg_tablesize * 8) + 112;
1609         }
1610         if ((quirks & AAC_QUIRK_17SG) && (host->sg_tablesize > 17)) {
1611                 host->sg_tablesize = 17;
1612                 host->max_sectors = (host->sg_tablesize * 8) + 112;
1613         }
1614         aac_get_config_status(aac, 1);
1615         aac_get_containers(aac);
1616         /*
1617          * This is where the assumption that the Adapter is quiesced
1618          * is important.
1619          */
1620         command_list = NULL;
1621         __shost_for_each_device(dev, host) {
1622                 unsigned long flags;
1623                 spin_lock_irqsave(&dev->list_lock, flags);
1624                 list_for_each_entry(command, &dev->cmd_list, list)
1625                         if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1626                                 command->SCp.buffer = (struct scatterlist *)command_list;
1627                                 command_list = command;
1628                         }
1629                 spin_unlock_irqrestore(&dev->list_lock, flags);
1630         }
1631         while ((command = command_list)) {
1632                 command_list = (struct scsi_cmnd *)command->SCp.buffer;
1633                 command->SCp.buffer = NULL;
1634                 command->result = DID_OK << 16
1635                   | COMMAND_COMPLETE << 8
1636                   | SAM_STAT_TASK_SET_FULL;
1637                 command->SCp.phase = AAC_OWNER_ERROR_HANDLER;
1638                 command->scsi_done(command);
1639         }
1640         /*
1641          * Any Device that was already marked offline needs to be cleaned up
1642          */
1643         __shost_for_each_device(dev, host) {
1644                 if (!scsi_device_online(dev)) {
1645                         sdev_printk(KERN_INFO, dev, "Removing offline device\n");
1646                         scsi_remove_device(dev);
1647                         scsi_device_put(dev);
1648                 }
1649         }
1650         retval = 0;
1651
1652 out:
1653         aac->in_reset = 0;
1654         scsi_unblock_requests(host);
1655         /*
1656          * Issue bus rescan to catch any configuration that might have
1657          * occurred
1658          */
1659         if (!retval) {
1660                 dev_info(&aac->pdev->dev, "Issuing bus rescan\n");
1661                 scsi_scan_host(host);
1662         }
1663         if (jafo) {
1664                 spin_lock_irq(host->host_lock);
1665         }
1666         return retval;
1667 }
1668
1669 int aac_reset_adapter(struct aac_dev *aac, int forced, u8 reset_type)
1670 {
1671         unsigned long flagv = 0;
1672         int retval;
1673         struct Scsi_Host * host;
1674         int bled;
1675
1676         if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1677                 return -EBUSY;
1678
1679         if (aac->in_reset) {
1680                 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1681                 return -EBUSY;
1682         }
1683         aac->in_reset = 1;
1684         spin_unlock_irqrestore(&aac->fib_lock, flagv);
1685
1686         /*
1687          * Wait for all commands to complete to this specific
1688          * target (block maximum 60 seconds). Although not necessary,
1689          * it does make us a good storage citizen.
1690          */
1691         host = aac->scsi_host_ptr;
1692         scsi_block_requests(host);
1693         if (forced < 2) for (retval = 60; retval; --retval) {
1694                 struct scsi_device * dev;
1695                 struct scsi_cmnd * command;
1696                 int active = 0;
1697
1698                 __shost_for_each_device(dev, host) {
1699                         spin_lock_irqsave(&dev->list_lock, flagv);
1700                         list_for_each_entry(command, &dev->cmd_list, list) {
1701                                 if (command->SCp.phase == AAC_OWNER_FIRMWARE) {
1702                                         active++;
1703                                         break;
1704                                 }
1705                         }
1706                         spin_unlock_irqrestore(&dev->list_lock, flagv);
1707                         if (active)
1708                                 break;
1709
1710                 }
1711                 /*
1712                  * We can exit If all the commands are complete
1713                  */
1714                 if (active == 0)
1715                         break;
1716                 ssleep(1);
1717         }
1718
1719         /* Quiesce build, flush cache, write through mode */
1720         if (forced < 2)
1721                 aac_send_shutdown(aac);
1722         spin_lock_irqsave(host->host_lock, flagv);
1723         bled = forced ? forced :
1724                         (aac_check_reset != 0 && aac_check_reset != 1);
1725         retval = _aac_reset_adapter(aac, bled, reset_type);
1726         spin_unlock_irqrestore(host->host_lock, flagv);
1727
1728         if ((forced < 2) && (retval == -ENODEV)) {
1729                 /* Unwind aac_send_shutdown() IOP_RESET unsupported/disabled */
1730                 struct fib * fibctx = aac_fib_alloc(aac);
1731                 if (fibctx) {
1732                         struct aac_pause *cmd;
1733                         int status;
1734
1735                         aac_fib_init(fibctx);
1736
1737                         cmd = (struct aac_pause *) fib_data(fibctx);
1738
1739                         cmd->command = cpu_to_le32(VM_ContainerConfig);
1740                         cmd->type = cpu_to_le32(CT_PAUSE_IO);
1741                         cmd->timeout = cpu_to_le32(1);
1742                         cmd->min = cpu_to_le32(1);
1743                         cmd->noRescan = cpu_to_le32(1);
1744                         cmd->count = cpu_to_le32(0);
1745
1746                         status = aac_fib_send(ContainerCommand,
1747                           fibctx,
1748                           sizeof(struct aac_pause),
1749                           FsaNormal,
1750                           -2 /* Timeout silently */, 1,
1751                           NULL, NULL);
1752
1753                         if (status >= 0)
1754                                 aac_fib_complete(fibctx);
1755                         /* FIB should be freed only after getting
1756                          * the response from the F/W */
1757                         if (status != -ERESTARTSYS)
1758                                 aac_fib_free(fibctx);
1759                 }
1760         }
1761
1762         return retval;
1763 }
1764
1765 int aac_check_health(struct aac_dev * aac)
1766 {
1767         int BlinkLED;
1768         unsigned long time_now, flagv = 0;
1769         struct list_head * entry;
1770         struct Scsi_Host * host;
1771         int bled;
1772
1773         /* Extending the scope of fib_lock slightly to protect aac->in_reset */
1774         if (spin_trylock_irqsave(&aac->fib_lock, flagv) == 0)
1775                 return 0;
1776
1777         if (aac->in_reset || !(BlinkLED = aac_adapter_check_health(aac))) {
1778                 spin_unlock_irqrestore(&aac->fib_lock, flagv);
1779                 return 0; /* OK */
1780         }
1781
1782         aac->in_reset = 1;
1783
1784         /* Fake up an AIF:
1785          *      aac_aifcmd.command = AifCmdEventNotify = 1
1786          *      aac_aifcmd.seqnum = 0xFFFFFFFF
1787          *      aac_aifcmd.data[0] = AifEnExpEvent = 23
1788          *      aac_aifcmd.data[1] = AifExeFirmwarePanic = 3
1789          *      aac.aifcmd.data[2] = AifHighPriority = 3
1790          *      aac.aifcmd.data[3] = BlinkLED
1791          */
1792
1793         time_now = jiffies/HZ;
1794         entry = aac->fib_list.next;
1795
1796         /*
1797          * For each Context that is on the
1798          * fibctxList, make a copy of the
1799          * fib, and then set the event to wake up the
1800          * thread that is waiting for it.
1801          */
1802         while (entry != &aac->fib_list) {
1803                 /*
1804                  * Extract the fibctx
1805                  */
1806                 struct aac_fib_context *fibctx = list_entry(entry, struct aac_fib_context, next);
1807                 struct hw_fib * hw_fib;
1808                 struct fib * fib;
1809                 /*
1810                  * Check if the queue is getting
1811                  * backlogged
1812                  */
1813                 if (fibctx->count > 20) {
1814                         /*
1815                          * It's *not* jiffies folks,
1816                          * but jiffies / HZ, so do not
1817                          * panic ...
1818                          */
1819                         u32 time_last = fibctx->jiffies;
1820                         /*
1821                          * Has it been > 2 minutes
1822                          * since the last read off
1823                          * the queue?
1824                          */
1825                         if ((time_now - time_last) > aif_timeout) {
1826                                 entry = entry->next;
1827                                 aac_close_fib_context(aac, fibctx);
1828                                 continue;
1829                         }
1830                 }
1831                 /*
1832                  * Warning: no sleep allowed while
1833                  * holding spinlock
1834                  */
1835                 hw_fib = kzalloc(sizeof(struct hw_fib), GFP_ATOMIC);
1836                 fib = kzalloc(sizeof(struct fib), GFP_ATOMIC);
1837                 if (fib && hw_fib) {
1838                         struct aac_aifcmd * aif;
1839
1840                         fib->hw_fib_va = hw_fib;
1841                         fib->dev = aac;
1842                         aac_fib_init(fib);
1843                         fib->type = FSAFS_NTC_FIB_CONTEXT;
1844                         fib->size = sizeof (struct fib);
1845                         fib->data = hw_fib->data;
1846                         aif = (struct aac_aifcmd *)hw_fib->data;
1847                         aif->command = cpu_to_le32(AifCmdEventNotify);
1848                         aif->seqnum = cpu_to_le32(0xFFFFFFFF);
1849                         ((__le32 *)aif->data)[0] = cpu_to_le32(AifEnExpEvent);
1850                         ((__le32 *)aif->data)[1] = cpu_to_le32(AifExeFirmwarePanic);
1851                         ((__le32 *)aif->data)[2] = cpu_to_le32(AifHighPriority);
1852                         ((__le32 *)aif->data)[3] = cpu_to_le32(BlinkLED);
1853
1854                         /*
1855                          * Put the FIB onto the
1856                          * fibctx's fibs
1857                          */
1858                         list_add_tail(&fib->fiblink, &fibctx->fib_list);
1859                         fibctx->count++;
1860                         /*
1861                          * Set the event to wake up the
1862                          * thread that will waiting.
1863                          */
1864                         up(&fibctx->wait_sem);
1865                 } else {
1866                         printk(KERN_WARNING "aifd: didn't allocate NewFib.\n");
1867                         kfree(fib);
1868                         kfree(hw_fib);
1869                 }
1870                 entry = entry->next;
1871         }
1872
1873         spin_unlock_irqrestore(&aac->fib_lock, flagv);
1874
1875         if (BlinkLED < 0) {
1876                 printk(KERN_ERR "%s: Host adapter is dead (or got a PCI error) %d\n",
1877                                 aac->name, BlinkLED);
1878                 goto out;
1879         }
1880
1881         printk(KERN_ERR "%s: Host adapter BLINK LED 0x%x\n", aac->name, BlinkLED);
1882
1883         if (!aac_check_reset || ((aac_check_reset == 1) &&
1884                 (aac->supplement_adapter_info.supported_options2 &
1885                         AAC_OPTION_IGNORE_RESET)))
1886                 goto out;
1887         host = aac->scsi_host_ptr;
1888         if (aac->thread->pid != current->pid)
1889                 spin_lock_irqsave(host->host_lock, flagv);
1890         bled = aac_check_reset != 1 ? 1 : 0;
1891         _aac_reset_adapter(aac, bled, IOP_HWSOFT_RESET);
1892         if (aac->thread->pid != current->pid)
1893                 spin_unlock_irqrestore(host->host_lock, flagv);
1894         return BlinkLED;
1895
1896 out:
1897         aac->in_reset = 0;
1898         return BlinkLED;
1899 }
1900
1901
1902 static void aac_resolve_luns(struct aac_dev *dev)
1903 {
1904         int bus, target, channel;
1905         struct scsi_device *sdev;
1906         u8 devtype;
1907         u8 new_devtype;
1908
1909         for (bus = 0; bus < AAC_MAX_BUSES; bus++) {
1910                 for (target = 0; target < AAC_MAX_TARGETS; target++) {
1911
1912                         if (bus == CONTAINER_CHANNEL)
1913                                 channel = CONTAINER_CHANNEL;
1914                         else
1915                                 channel = aac_phys_to_logical(bus);
1916
1917                         devtype = dev->hba_map[bus][target].devtype;
1918                         new_devtype = dev->hba_map[bus][target].new_devtype;
1919
1920                         sdev = scsi_device_lookup(dev->scsi_host_ptr, channel,
1921                                         target, 0);
1922
1923                         if (!sdev && new_devtype)
1924                                 scsi_add_device(dev->scsi_host_ptr, channel,
1925                                                 target, 0);
1926                         else if (sdev && new_devtype != devtype)
1927                                 scsi_remove_device(sdev);
1928                         else if (sdev && new_devtype == devtype)
1929                                 scsi_rescan_device(&sdev->sdev_gendev);
1930
1931                         if (sdev)
1932                                 scsi_device_put(sdev);
1933
1934                         dev->hba_map[bus][target].devtype = new_devtype;
1935                 }
1936         }
1937 }
1938
1939 /**
1940  *      aac_handle_sa_aif       Handle a message from the firmware
1941  *      @dev: Which adapter this fib is from
1942  *      @fibptr: Pointer to fibptr from adapter
1943  *
1944  *      This routine handles a driver notify fib from the adapter and
1945  *      dispatches it to the appropriate routine for handling.
1946  */
1947 static void aac_handle_sa_aif(struct aac_dev *dev, struct fib *fibptr)
1948 {
1949         int i, bus, target, container, rcode = 0;
1950         u32 events = 0;
1951         struct fib *fib;
1952         struct scsi_device *sdev;
1953
1954         if (fibptr->hbacmd_size & SA_AIF_HOTPLUG)
1955                 events = SA_AIF_HOTPLUG;
1956         else if (fibptr->hbacmd_size & SA_AIF_HARDWARE)
1957                 events = SA_AIF_HARDWARE;
1958         else if (fibptr->hbacmd_size & SA_AIF_PDEV_CHANGE)
1959                 events = SA_AIF_PDEV_CHANGE;
1960         else if (fibptr->hbacmd_size & SA_AIF_LDEV_CHANGE)
1961                 events = SA_AIF_LDEV_CHANGE;
1962         else if (fibptr->hbacmd_size & SA_AIF_BPSTAT_CHANGE)
1963                 events = SA_AIF_BPSTAT_CHANGE;
1964         else if (fibptr->hbacmd_size & SA_AIF_BPCFG_CHANGE)
1965                 events = SA_AIF_BPCFG_CHANGE;
1966
1967         switch (events) {
1968         case SA_AIF_HOTPLUG:
1969         case SA_AIF_HARDWARE:
1970         case SA_AIF_PDEV_CHANGE:
1971         case SA_AIF_LDEV_CHANGE:
1972         case SA_AIF_BPCFG_CHANGE:
1973
1974                 fib = aac_fib_alloc(dev);
1975                 if (!fib) {
1976                         pr_err("aac_handle_sa_aif: out of memory\n");
1977                         return;
1978                 }
1979                 for (bus = 0; bus < AAC_MAX_BUSES; bus++)
1980                         for (target = 0; target < AAC_MAX_TARGETS; target++)
1981                                 dev->hba_map[bus][target].new_devtype = 0;
1982
1983                 rcode = aac_report_phys_luns(dev, fib, AAC_RESCAN);
1984
1985                 if (rcode != -ERESTARTSYS)
1986                         aac_fib_free(fib);
1987
1988                 aac_resolve_luns(dev);
1989
1990                 if (events == SA_AIF_LDEV_CHANGE ||
1991                     events == SA_AIF_BPCFG_CHANGE) {
1992                         aac_get_containers(dev);
1993                         for (container = 0; container <
1994                         dev->maximum_num_containers; ++container) {
1995                                 sdev = scsi_device_lookup(dev->scsi_host_ptr,
1996                                                 CONTAINER_CHANNEL,
1997                                                 container, 0);
1998                                 if (dev->fsa_dev[container].valid && !sdev) {
1999                                         scsi_add_device(dev->scsi_host_ptr,
2000                                                 CONTAINER_CHANNEL,
2001                                                 container, 0);
2002                                 } else if (!dev->fsa_dev[container].valid &&
2003                                         sdev) {
2004                                         scsi_remove_device(sdev);
2005                                         scsi_device_put(sdev);
2006                                 } else if (sdev) {
2007                                         scsi_rescan_device(&sdev->sdev_gendev);
2008                                         scsi_device_put(sdev);
2009                                 }
2010                         }
2011                 }
2012                 break;
2013
2014         case SA_AIF_BPSTAT_CHANGE:
2015                 /* currently do nothing */
2016                 break;
2017         }
2018
2019         for (i = 1; i <= 10; ++i) {
2020                 events = src_readl(dev, MUnit.IDR);
2021                 if (events & (1<<23)) {
2022                         pr_warn(" AIF not cleared by firmware - %d/%d)\n",
2023                                 i, 10);
2024                         ssleep(1);
2025                 }
2026         }
2027 }
2028
2029 static int get_fib_count(struct aac_dev *dev)
2030 {
2031         unsigned int num = 0;
2032         struct list_head *entry;
2033         unsigned long flagv;
2034
2035         /*
2036          * Warning: no sleep allowed while
2037          * holding spinlock. We take the estimate
2038          * and pre-allocate a set of fibs outside the
2039          * lock.
2040          */
2041         num = le32_to_cpu(dev->init->r7.adapter_fibs_size)
2042                         / sizeof(struct hw_fib); /* some extra */
2043         spin_lock_irqsave(&dev->fib_lock, flagv);
2044         entry = dev->fib_list.next;
2045         while (entry != &dev->fib_list) {
2046                 entry = entry->next;
2047                 ++num;
2048         }
2049         spin_unlock_irqrestore(&dev->fib_lock, flagv);
2050
2051         return num;
2052 }
2053
2054 static int fillup_pools(struct aac_dev *dev, struct hw_fib **hw_fib_pool,
2055                                                 struct fib **fib_pool,
2056                                                 unsigned int num)
2057 {
2058         struct hw_fib **hw_fib_p;
2059         struct fib **fib_p;
2060
2061         hw_fib_p = hw_fib_pool;
2062         fib_p = fib_pool;
2063         while (hw_fib_p < &hw_fib_pool[num]) {
2064                 *(hw_fib_p) = kmalloc(sizeof(struct hw_fib), GFP_KERNEL);
2065                 if (!(*(hw_fib_p++))) {
2066                         --hw_fib_p;
2067                         break;
2068                 }
2069
2070                 *(fib_p) = kmalloc(sizeof(struct fib), GFP_KERNEL);
2071                 if (!(*(fib_p++))) {
2072                         kfree(*(--hw_fib_p));
2073                         break;
2074                 }
2075         }
2076
2077         /*
2078          * Get the actual number of allocated fibs
2079          */
2080         num = hw_fib_p - hw_fib_pool;
2081         return num;
2082 }
2083
2084 static void wakeup_fibctx_threads(struct aac_dev *dev,
2085                                                 struct hw_fib **hw_fib_pool,
2086                                                 struct fib **fib_pool,
2087                                                 struct fib *fib,
2088                                                 struct hw_fib *hw_fib,
2089                                                 unsigned int num)
2090 {
2091         unsigned long flagv;
2092         struct list_head *entry;
2093         struct hw_fib **hw_fib_p;
2094         struct fib **fib_p;
2095         u32 time_now, time_last;
2096         struct hw_fib *hw_newfib;
2097         struct fib *newfib;
2098         struct aac_fib_context *fibctx;
2099
2100         time_now = jiffies/HZ;
2101         spin_lock_irqsave(&dev->fib_lock, flagv);
2102         entry = dev->fib_list.next;
2103         /*
2104          * For each Context that is on the
2105          * fibctxList, make a copy of the
2106          * fib, and then set the event to wake up the
2107          * thread that is waiting for it.
2108          */
2109
2110         hw_fib_p = hw_fib_pool;
2111         fib_p = fib_pool;
2112         while (entry != &dev->fib_list) {
2113                 /*
2114                  * Extract the fibctx
2115                  */
2116                 fibctx = list_entry(entry, struct aac_fib_context,
2117                                 next);
2118                 /*
2119                  * Check if the queue is getting
2120                  * backlogged
2121                  */
2122                 if (fibctx->count > 20) {
2123                         /*
2124                          * It's *not* jiffies folks,
2125                          * but jiffies / HZ so do not
2126                          * panic ...
2127                          */
2128                         time_last = fibctx->jiffies;
2129                         /*
2130                          * Has it been > 2 minutes
2131                          * since the last read off
2132                          * the queue?
2133                          */
2134                         if ((time_now - time_last) > aif_timeout) {
2135                                 entry = entry->next;
2136                                 aac_close_fib_context(dev, fibctx);
2137                                 continue;
2138                         }
2139                 }
2140                 /*
2141                  * Warning: no sleep allowed while
2142                  * holding spinlock
2143                  */
2144                 if (hw_fib_p >= &hw_fib_pool[num]) {
2145                         pr_warn("aifd: didn't allocate NewFib\n");
2146                         entry = entry->next;
2147                         continue;
2148                 }
2149
2150                 hw_newfib = *hw_fib_p;
2151                 *(hw_fib_p++) = NULL;
2152                 newfib = *fib_p;
2153                 *(fib_p++) = NULL;
2154                 /*
2155                  * Make the copy of the FIB
2156                  */
2157                 memcpy(hw_newfib, hw_fib, sizeof(struct hw_fib));
2158                 memcpy(newfib, fib, sizeof(struct fib));
2159                 newfib->hw_fib_va = hw_newfib;
2160                 /*
2161                  * Put the FIB onto the
2162                  * fibctx's fibs
2163                  */
2164                 list_add_tail(&newfib->fiblink, &fibctx->fib_list);
2165                 fibctx->count++;
2166                 /*
2167                  * Set the event to wake up the
2168                  * thread that is waiting.
2169                  */
2170                 up(&fibctx->wait_sem);
2171
2172                 entry = entry->next;
2173         }
2174         /*
2175          *      Set the status of this FIB
2176          */
2177         *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
2178         aac_fib_adapter_complete(fib, sizeof(u32));
2179         spin_unlock_irqrestore(&dev->fib_lock, flagv);
2180
2181 }
2182
2183 static void aac_process_events(struct aac_dev *dev)
2184 {
2185         struct hw_fib *hw_fib;
2186         struct fib *fib;
2187         unsigned long flags;
2188         spinlock_t *t_lock;
2189
2190         t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2191         spin_lock_irqsave(t_lock, flags);
2192
2193         while (!list_empty(&(dev->queues->queue[HostNormCmdQueue].cmdq))) {
2194                 struct list_head *entry;
2195                 struct aac_aifcmd *aifcmd;
2196                 unsigned int  num;
2197                 struct hw_fib **hw_fib_pool, **hw_fib_p;
2198                 struct fib **fib_pool, **fib_p;
2199
2200                 set_current_state(TASK_RUNNING);
2201
2202                 entry = dev->queues->queue[HostNormCmdQueue].cmdq.next;
2203                 list_del(entry);
2204
2205                 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2206                 spin_unlock_irqrestore(t_lock, flags);
2207
2208                 fib = list_entry(entry, struct fib, fiblink);
2209                 hw_fib = fib->hw_fib_va;
2210                 if (dev->sa_firmware) {
2211                         /* Thor AIF */
2212                         aac_handle_sa_aif(dev, fib);
2213                         aac_fib_adapter_complete(fib, (u16)sizeof(u32));
2214                         goto free_fib;
2215                 }
2216                 /*
2217                  *      We will process the FIB here or pass it to a
2218                  *      worker thread that is TBD. We Really can't
2219                  *      do anything at this point since we don't have
2220                  *      anything defined for this thread to do.
2221                  */
2222                 memset(fib, 0, sizeof(struct fib));
2223                 fib->type = FSAFS_NTC_FIB_CONTEXT;
2224                 fib->size = sizeof(struct fib);
2225                 fib->hw_fib_va = hw_fib;
2226                 fib->data = hw_fib->data;
2227                 fib->dev = dev;
2228                 /*
2229                  *      We only handle AifRequest fibs from the adapter.
2230                  */
2231
2232                 aifcmd = (struct aac_aifcmd *) hw_fib->data;
2233                 if (aifcmd->command == cpu_to_le32(AifCmdDriverNotify)) {
2234                         /* Handle Driver Notify Events */
2235                         aac_handle_aif(dev, fib);
2236                         *(__le32 *)hw_fib->data = cpu_to_le32(ST_OK);
2237                         aac_fib_adapter_complete(fib, (u16)sizeof(u32));
2238                         goto free_fib;
2239                 }
2240                 /*
2241                  * The u32 here is important and intended. We are using
2242                  * 32bit wrapping time to fit the adapter field
2243                  */
2244
2245                 /* Sniff events */
2246                 if (aifcmd->command == cpu_to_le32(AifCmdEventNotify)
2247                  || aifcmd->command == cpu_to_le32(AifCmdJobProgress)) {
2248                         aac_handle_aif(dev, fib);
2249                 }
2250
2251                 /*
2252                  * get number of fibs to process
2253                  */
2254                 num = get_fib_count(dev);
2255                 if (!num)
2256                         goto free_fib;
2257
2258                 hw_fib_pool = kmalloc_array(num, sizeof(struct hw_fib *),
2259                                                 GFP_KERNEL);
2260                 if (!hw_fib_pool)
2261                         goto free_fib;
2262
2263                 fib_pool = kmalloc_array(num, sizeof(struct fib *), GFP_KERNEL);
2264                 if (!fib_pool)
2265                         goto free_hw_fib_pool;
2266
2267                 /*
2268                  * Fill up fib pointer pools with actual fibs
2269                  * and hw_fibs
2270                  */
2271                 num = fillup_pools(dev, hw_fib_pool, fib_pool, num);
2272                 if (!num)
2273                         goto free_mem;
2274
2275                 /*
2276                  * wakeup the thread that is waiting for
2277                  * the response from fw (ioctl)
2278                  */
2279                 wakeup_fibctx_threads(dev, hw_fib_pool, fib_pool,
2280                                                             fib, hw_fib, num);
2281
2282 free_mem:
2283                 /* Free up the remaining resources */
2284                 hw_fib_p = hw_fib_pool;
2285                 fib_p = fib_pool;
2286                 while (hw_fib_p < &hw_fib_pool[num]) {
2287                         kfree(*hw_fib_p);
2288                         kfree(*fib_p);
2289                         ++fib_p;
2290                         ++hw_fib_p;
2291                 }
2292                 kfree(fib_pool);
2293 free_hw_fib_pool:
2294                 kfree(hw_fib_pool);
2295 free_fib:
2296                 kfree(fib);
2297                 t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2298                 spin_lock_irqsave(t_lock, flags);
2299         }
2300         /*
2301          *      There are no more AIF's
2302          */
2303         t_lock = dev->queues->queue[HostNormCmdQueue].lock;
2304         spin_unlock_irqrestore(t_lock, flags);
2305 }
2306
2307 static int aac_send_wellness_command(struct aac_dev *dev, char *wellness_str,
2308                                                         u32 datasize)
2309 {
2310         struct aac_srb *srbcmd;
2311         struct sgmap64 *sg64;
2312         dma_addr_t addr;
2313         char *dma_buf;
2314         struct fib *fibptr;
2315         int ret = -ENOMEM;
2316         u32 vbus, vid;
2317
2318         fibptr = aac_fib_alloc(dev);
2319         if (!fibptr)
2320                 goto out;
2321
2322         dma_buf = pci_alloc_consistent(dev->pdev, datasize, &addr);
2323         if (!dma_buf)
2324                 goto fib_free_out;
2325
2326         aac_fib_init(fibptr);
2327
2328         vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus);
2329         vid = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_target);
2330
2331         srbcmd = (struct aac_srb *)fib_data(fibptr);
2332
2333         srbcmd->function = cpu_to_le32(SRBF_ExecuteScsi);
2334         srbcmd->channel = cpu_to_le32(vbus);
2335         srbcmd->id = cpu_to_le32(vid);
2336         srbcmd->lun = 0;
2337         srbcmd->flags = cpu_to_le32(SRB_DataOut);
2338         srbcmd->timeout = cpu_to_le32(10);
2339         srbcmd->retry_limit = 0;
2340         srbcmd->cdb_size = cpu_to_le32(12);
2341         srbcmd->count = cpu_to_le32(datasize);
2342
2343         memset(srbcmd->cdb, 0, sizeof(srbcmd->cdb));
2344         srbcmd->cdb[0] = BMIC_OUT;
2345         srbcmd->cdb[6] = WRITE_HOST_WELLNESS;
2346         memcpy(dma_buf, (char *)wellness_str, datasize);
2347
2348         sg64 = (struct sgmap64 *)&srbcmd->sg;
2349         sg64->count = cpu_to_le32(1);
2350         sg64->sg[0].addr[1] = cpu_to_le32((u32)(((addr) >> 16) >> 16));
2351         sg64->sg[0].addr[0] = cpu_to_le32((u32)(addr & 0xffffffff));
2352         sg64->sg[0].count = cpu_to_le32(datasize);
2353
2354         ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb),
2355                                 FsaNormal, 1, 1, NULL, NULL);
2356
2357         pci_free_consistent(dev->pdev, datasize, (void *)dma_buf, addr);
2358
2359         /*
2360          * Do not set XferState to zero unless
2361          * receives a response from F/W
2362          */
2363         if (ret >= 0)
2364                 aac_fib_complete(fibptr);
2365
2366         /*
2367          * FIB should be freed only after
2368          * getting the response from the F/W
2369          */
2370         if (ret != -ERESTARTSYS)
2371                 goto fib_free_out;
2372
2373 out:
2374         return ret;
2375 fib_free_out:
2376         aac_fib_free(fibptr);
2377         goto out;
2378 }
2379
2380 int aac_send_safw_hostttime(struct aac_dev *dev, struct timeval *now)
2381 {
2382         struct tm cur_tm;
2383         char wellness_str[] = "<HW>TD\010\0\0\0\0\0\0\0\0\0DW\0\0ZZ";
2384         u32 datasize = sizeof(wellness_str);
2385         unsigned long local_time;
2386         int ret = -ENODEV;
2387
2388         if (!dev->sa_firmware)
2389                 goto out;
2390
2391         local_time = (u32)(now->tv_sec - (sys_tz.tz_minuteswest * 60));
2392         time_to_tm(local_time, 0, &cur_tm);
2393         cur_tm.tm_mon += 1;
2394         cur_tm.tm_year += 1900;
2395         wellness_str[8] = bin2bcd(cur_tm.tm_hour);
2396         wellness_str[9] = bin2bcd(cur_tm.tm_min);
2397         wellness_str[10] = bin2bcd(cur_tm.tm_sec);
2398         wellness_str[12] = bin2bcd(cur_tm.tm_mon);
2399         wellness_str[13] = bin2bcd(cur_tm.tm_mday);
2400         wellness_str[14] = bin2bcd(cur_tm.tm_year / 100);
2401         wellness_str[15] = bin2bcd(cur_tm.tm_year % 100);
2402
2403         ret = aac_send_wellness_command(dev, wellness_str, datasize);
2404
2405 out:
2406         return ret;
2407 }
2408
2409 int aac_send_hosttime(struct aac_dev *dev, struct timeval *now)
2410 {
2411         int ret = -ENOMEM;
2412         struct fib *fibptr;
2413         __le32 *info;
2414
2415         fibptr = aac_fib_alloc(dev);
2416         if (!fibptr)
2417                 goto out;
2418
2419         aac_fib_init(fibptr);
2420         info = (__le32 *)fib_data(fibptr);
2421         *info = cpu_to_le32(now->tv_sec);
2422         ret = aac_fib_send(SendHostTime, fibptr, sizeof(*info), FsaNormal,
2423                                         1, 1, NULL, NULL);
2424
2425         /*
2426          * Do not set XferState to zero unless
2427          * receives a response from F/W
2428          */
2429         if (ret >= 0)
2430                 aac_fib_complete(fibptr);
2431
2432         /*
2433          * FIB should be freed only after
2434          * getting the response from the F/W
2435          */
2436         if (ret != -ERESTARTSYS)
2437                 aac_fib_free(fibptr);
2438
2439 out:
2440         return ret;
2441 }
2442
2443 /**
2444  *      aac_command_thread      -       command processing thread
2445  *      @dev: Adapter to monitor
2446  *
2447  *      Waits on the commandready event in it's queue. When the event gets set
2448  *      it will pull FIBs off it's queue. It will continue to pull FIBs off
2449  *      until the queue is empty. When the queue is empty it will wait for
2450  *      more FIBs.
2451  */
2452
2453 int aac_command_thread(void *data)
2454 {
2455         struct aac_dev *dev = data;
2456         DECLARE_WAITQUEUE(wait, current);
2457         unsigned long next_jiffies = jiffies + HZ;
2458         unsigned long next_check_jiffies = next_jiffies;
2459         long difference = HZ;
2460
2461         /*
2462          *      We can only have one thread per adapter for AIF's.
2463          */
2464         if (dev->aif_thread)
2465                 return -EINVAL;
2466
2467         /*
2468          *      Let the DPC know it has a place to send the AIF's to.
2469          */
2470         dev->aif_thread = 1;
2471         add_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
2472         set_current_state(TASK_INTERRUPTIBLE);
2473         dprintk ((KERN_INFO "aac_command_thread start\n"));
2474         while (1) {
2475
2476                 aac_process_events(dev);
2477
2478                 /*
2479                  *      Background activity
2480                  */
2481                 if ((time_before(next_check_jiffies,next_jiffies))
2482                  && ((difference = next_check_jiffies - jiffies) <= 0)) {
2483                         next_check_jiffies = next_jiffies;
2484                         if (aac_check_health(dev) == 0) {
2485                                 difference = ((long)(unsigned)check_interval)
2486                                            * HZ;
2487                                 next_check_jiffies = jiffies + difference;
2488                         } else if (!dev->queues)
2489                                 break;
2490                 }
2491                 if (!time_before(next_check_jiffies,next_jiffies)
2492                  && ((difference = next_jiffies - jiffies) <= 0)) {
2493                         struct timeval now;
2494                         int ret;
2495
2496                         /* Don't even try to talk to adapter if its sick */
2497                         ret = aac_check_health(dev);
2498                         if (ret || !dev->queues)
2499                                 break;
2500                         next_check_jiffies = jiffies
2501                                            + ((long)(unsigned)check_interval)
2502                                            * HZ;
2503                         do_gettimeofday(&now);
2504
2505                         /* Synchronize our watches */
2506                         if (((1000000 - (1000000 / HZ)) > now.tv_usec)
2507                          && (now.tv_usec > (1000000 / HZ)))
2508                                 difference = (((1000000 - now.tv_usec) * HZ)
2509                                   + 500000) / 1000000;
2510                         else {
2511                                 if (now.tv_usec > 500000)
2512                                         ++now.tv_sec;
2513
2514                                 if (dev->sa_firmware)
2515                                         ret =
2516                                         aac_send_safw_hostttime(dev, &now);
2517                                 else
2518                                         ret = aac_send_hosttime(dev, &now);
2519
2520                                 difference = (long)(unsigned)update_interval*HZ;
2521                         }
2522                         next_jiffies = jiffies + difference;
2523                         if (time_before(next_check_jiffies,next_jiffies))
2524                                 difference = next_check_jiffies - jiffies;
2525                 }
2526                 if (difference <= 0)
2527                         difference = 1;
2528                 set_current_state(TASK_INTERRUPTIBLE);
2529
2530                 if (kthread_should_stop())
2531                         break;
2532
2533                 schedule_timeout(difference);
2534
2535                 if (kthread_should_stop())
2536                         break;
2537         }
2538         if (dev->queues)
2539                 remove_wait_queue(&dev->queues->queue[HostNormCmdQueue].cmdready, &wait);
2540         dev->aif_thread = 0;
2541         return 0;
2542 }
2543
2544 int aac_acquire_irq(struct aac_dev *dev)
2545 {
2546         int i;
2547         int j;
2548         int ret = 0;
2549
2550         if (!dev->sync_mode && dev->msi_enabled && dev->max_msix > 1) {
2551                 for (i = 0; i < dev->max_msix; i++) {
2552                         dev->aac_msix[i].vector_no = i;
2553                         dev->aac_msix[i].dev = dev;
2554                         if (request_irq(pci_irq_vector(dev->pdev, i),
2555                                         dev->a_ops.adapter_intr,
2556                                         0, "aacraid", &(dev->aac_msix[i]))) {
2557                                 printk(KERN_ERR "%s%d: Failed to register IRQ for vector %d.\n",
2558                                                 dev->name, dev->id, i);
2559                                 for (j = 0 ; j < i ; j++)
2560                                         free_irq(pci_irq_vector(dev->pdev, j),
2561                                                  &(dev->aac_msix[j]));
2562                                 pci_disable_msix(dev->pdev);
2563                                 ret = -1;
2564                         }
2565                 }
2566         } else {
2567                 dev->aac_msix[0].vector_no = 0;
2568                 dev->aac_msix[0].dev = dev;
2569
2570                 if (request_irq(dev->pdev->irq, dev->a_ops.adapter_intr,
2571                         IRQF_SHARED, "aacraid",
2572                         &(dev->aac_msix[0])) < 0) {
2573                         if (dev->msi)
2574                                 pci_disable_msi(dev->pdev);
2575                         printk(KERN_ERR "%s%d: Interrupt unavailable.\n",
2576                                         dev->name, dev->id);
2577                         ret = -1;
2578                 }
2579         }
2580         return ret;
2581 }
2582
2583 void aac_free_irq(struct aac_dev *dev)
2584 {
2585         int i;
2586         int cpu;
2587
2588         cpu = cpumask_first(cpu_online_mask);
2589         if (dev->pdev->device == PMC_DEVICE_S6 ||
2590             dev->pdev->device == PMC_DEVICE_S7 ||
2591             dev->pdev->device == PMC_DEVICE_S8 ||
2592             dev->pdev->device == PMC_DEVICE_S9) {
2593                 if (dev->max_msix > 1) {
2594                         for (i = 0; i < dev->max_msix; i++)
2595                                 free_irq(pci_irq_vector(dev->pdev, i),
2596                                          &(dev->aac_msix[i]));
2597                 } else {
2598                         free_irq(dev->pdev->irq, &(dev->aac_msix[0]));
2599                 }
2600         } else {
2601                 free_irq(dev->pdev->irq, dev);
2602         }
2603         if (dev->msi)
2604                 pci_disable_msi(dev->pdev);
2605         else if (dev->max_msix > 1)
2606                 pci_disable_msix(dev->pdev);
2607 }