drivers/block/DAC960.c

   1 /*
   2
   3   Linux Driver for Mylex DAC960/AcceleRAID/eXtremeRAID PCI RAID Controllers
   4
   5   Copyright 1998-2001 by Leonard N. Zubkoff <lnz@dandelion.com>
   6   Portions Copyright 2002 by Mylex (An IBM Business Unit)
   7
   8   This program is free software; you may redistribute and/or modify it under
   9   the terms of the GNU General Public License Version 2 as published by the
  10   Free Software Foundation.
  11
  12   This program is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY, without even the implied warranty of MERCHANTABILITY
  14   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15   for complete details.
  16
  17 */
  18
  19
  20 #define DAC960_DriverVersion                    "2.5.48"
  21 #define DAC960_DriverDate                       "14 May 2006"
  22
  23
  24 #include <linux/module.h>
  25 #include <linux/types.h>
  26 #include <linux/miscdevice.h>
  27 #include <linux/blkdev.h>
  28 #include <linux/bio.h>
  29 #include <linux/completion.h>
  30 #include <linux/delay.h>
  31 #include <linux/genhd.h>
  32 #include <linux/hdreg.h>
  33 #include <linux/blkpg.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/ioport.h>
  36 #include <linux/mm.h>
  37 #include <linux/slab.h>
  38 #include <linux/proc_fs.h>
  39 #include <linux/reboot.h>
  40 #include <linux/spinlock.h>
  41 #include <linux/timer.h>
  42 #include <linux/pci.h>
  43 #include <linux/init.h>
  44 #include <linux/jiffies.h>
  45 #include <linux/random.h>
  46 #include <asm/io.h>
  47 #include <asm/uaccess.h>
  48 #include "DAC960.h"
  49
  50 #define DAC960_GAM_MINOR        252
  51
  52
  53 static DAC960_Controller_T *DAC960_Controllers[DAC960_MaxControllers];
  54 static int DAC960_ControllerCount;
  55 static struct proc_dir_entry *DAC960_ProcDirectoryEntry;
  56
  57 static long disk_size(DAC960_Controller_T *p, int drive_nr)
  58 {
  59         if (p->FirmwareType == DAC960_V1_Controller) {
  60                 if (drive_nr >= p->LogicalDriveCount)
  61                         return 0;
  62                 return p->V1.LogicalDriveInformation[drive_nr].
  63                         LogicalDriveSize;
  64         } else {
  65                 DAC960_V2_LogicalDeviceInfo_T *i =
  66                         p->V2.LogicalDeviceInformation[drive_nr];
  67                 if (i == NULL)
  68                         return 0;
  69                 return i->ConfigurableDeviceSize;
  70         }
  71 }
  72
  73 static int DAC960_open(struct inode *inode, struct file *file)
  74 {
  75         struct gendisk *disk = inode->i_bdev->bd_disk;
  76         DAC960_Controller_T *p = disk->queue->queuedata;
  77         int drive_nr = (long)disk->private_data;
  78
  79         if (p->FirmwareType == DAC960_V1_Controller) {
  80                 if (p->V1.LogicalDriveInformation[drive_nr].
  81                     LogicalDriveState == DAC960_V1_LogicalDrive_Offline)
  82                         return -ENXIO;
  83         } else {
  84                 DAC960_V2_LogicalDeviceInfo_T *i =
  85                         p->V2.LogicalDeviceInformation[drive_nr];
  86                 if (!i || i->LogicalDeviceState == DAC960_V2_LogicalDevice_Offline)
  87                         return -ENXIO;
  88         }
  89
  90         check_disk_change(inode->i_bdev);
  91
  92         if (!get_capacity(p->disks[drive_nr]))
  93                 return -ENXIO;
  94         return 0;
  95 }
  96
  97 static int DAC960_getgeo(struct block_device *bdev, struct hd_geometry *geo)
  98 {
  99         struct gendisk *disk = bdev->bd_disk;
 100         DAC960_Controller_T *p = disk->queue->queuedata;
 101         int drive_nr = (long)disk->private_data;
 102
 103         if (p->FirmwareType == DAC960_V1_Controller) {
 104                 geo->heads = p->V1.GeometryTranslationHeads;
 105                 geo->sectors = p->V1.GeometryTranslationSectors;
 106                 geo->cylinders = p->V1.LogicalDriveInformation[drive_nr].
 107                         LogicalDriveSize / (geo->heads * geo->sectors);
 108         } else {
 109                 DAC960_V2_LogicalDeviceInfo_T *i =
 110                         p->V2.LogicalDeviceInformation[drive_nr];
 111                 switch (i->DriveGeometry) {
 112                 case DAC960_V2_Geometry_128_32:
 113                         geo->heads = 128;
 114                         geo->sectors = 32;
 115                         break;
 116                 case DAC960_V2_Geometry_255_63:
 117                         geo->heads = 255;
 118                         geo->sectors = 63;
 119                         break;
 120                 default:
 121                         DAC960_Error("Illegal Logical Device Geometry %d\n",
 122                                         p, i->DriveGeometry);
 123                         return -EINVAL;
 124                 }
 125
 126                 geo->cylinders = i->ConfigurableDeviceSize /
 127                         (geo->heads * geo->sectors);
 128         }
 129
 130         return 0;
 131 }
 132
 133 static int DAC960_media_changed(struct gendisk *disk)
 134 {
 135         DAC960_Controller_T *p = disk->queue->queuedata;
 136         int drive_nr = (long)disk->private_data;
 137
 138         if (!p->LogicalDriveInitiallyAccessible[drive_nr])
 139                 return 1;
 140         return 0;
 141 }
 142
 143 static int DAC960_revalidate_disk(struct gendisk *disk)
 144 {
 145         DAC960_Controller_T *p = disk->queue->queuedata;
 146         int unit = (long)disk->private_data;
 147
 148         set_capacity(disk, disk_size(p, unit));
 149         return 0;
 150 }
 151
 152 static struct block_device_operations DAC960_BlockDeviceOperations = {
 153         .owner                  = THIS_MODULE,
 154         .open                   = DAC960_open,
 155         .getgeo                 = DAC960_getgeo,
 156         .media_changed          = DAC960_media_changed,
 157         .revalidate_disk        = DAC960_revalidate_disk,
 158 };
 159
 160
 161 /*
 162   DAC960_AnnounceDriver announces the Driver Version and Date, Author's Name,
 163   Copyright Notice, and Electronic Mail Address.
 164 */
 165
 166 static void DAC960_AnnounceDriver(DAC960_Controller_T *Controller)
 167 {
 168   DAC960_Announce("***** DAC960 RAID Driver Version "
 169                   DAC960_DriverVersion " of "
 170                   DAC960_DriverDate " *****\n", Controller);
 171   DAC960_Announce("Copyright 1998-2001 by Leonard N. Zubkoff "
 172                   "<lnz@dandelion.com>\n", Controller);
 173 }
 174
 175
 176 /*
 177   DAC960_Failure prints a standardized error message, and then returns false.
 178 */
 179
 180 static boolean DAC960_Failure(DAC960_Controller_T *Controller,
 181                               unsigned char *ErrorMessage)
 182 {
 183   DAC960_Error("While configuring DAC960 PCI RAID Controller at\n",
 184                Controller);
 185   if (Controller->IO_Address == 0)
 186     DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
 187                  "PCI Address 0x%X\n", Controller,
 188                  Controller->Bus, Controller->Device,
 189                  Controller->Function, Controller->PCI_Address);
 190   else DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
 191                     "0x%X PCI Address 0x%X\n", Controller,
 192                     Controller->Bus, Controller->Device,
 193                     Controller->Function, Controller->IO_Address,
 194                     Controller->PCI_Address);
 195   DAC960_Error("%s FAILED - DETACHING\n", Controller, ErrorMessage);
 196   return false;
 197 }
 198
 199 /*
 200   init_dma_loaf() and slice_dma_loaf() are helper functions for
 201   aggregating the dma-mapped memory for a well-known collection of
 202   data structures that are of different lengths.
 203
 204   These routines don't guarantee any alignment.  The caller must
 205   include any space needed for alignment in the sizes of the structures
 206   that are passed in.
 207  */
 208
 209 static boolean init_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf,
 210                                                                  size_t len)
 211 {
 212         void *cpu_addr;
 213         dma_addr_t dma_handle;
 214
 215         cpu_addr = pci_alloc_consistent(dev, len, &dma_handle);
 216         if (cpu_addr == NULL)
 217                 return false;
 218
 219         loaf->cpu_free = loaf->cpu_base = cpu_addr;
 220         loaf->dma_free =loaf->dma_base = dma_handle;
 221         loaf->length = len;
 222         memset(cpu_addr, 0, len);
 223         return true;
 224 }
 225
 226 static void *slice_dma_loaf(struct dma_loaf *loaf, size_t len,
 227                                         dma_addr_t *dma_handle)
 228 {
 229         void *cpu_end = loaf->cpu_free + len;
 230         void *cpu_addr = loaf->cpu_free;
 231
 232         BUG_ON(cpu_end > loaf->cpu_base + loaf->length);
 233         *dma_handle = loaf->dma_free;
 234         loaf->cpu_free = cpu_end;
 235         loaf->dma_free += len;
 236         return cpu_addr;
 237 }
 238
 239 static void free_dma_loaf(struct pci_dev *dev, struct dma_loaf *loaf_handle)
 240 {
 241         if (loaf_handle->cpu_base != NULL)
 242                 pci_free_consistent(dev, loaf_handle->length,
 243                         loaf_handle->cpu_base, loaf_handle->dma_base);
 244 }
 245
 246
 247 /*
 248   DAC960_CreateAuxiliaryStructures allocates and initializes the auxiliary
 249   data structures for Controller.  It returns true on success and false on
 250   failure.
 251 */
 252
 253 static boolean DAC960_CreateAuxiliaryStructures(DAC960_Controller_T *Controller)
 254 {
 255   int CommandAllocationLength, CommandAllocationGroupSize;
 256   int CommandsRemaining = 0, CommandIdentifier, CommandGroupByteCount;
 257   void *AllocationPointer = NULL;
 258   void *ScatterGatherCPU = NULL;
 259   dma_addr_t ScatterGatherDMA;
 260   struct pci_pool *ScatterGatherPool;
 261   void *RequestSenseCPU = NULL;
 262   dma_addr_t RequestSenseDMA;
 263   struct pci_pool *RequestSensePool = NULL;
 264
 265   if (Controller->FirmwareType == DAC960_V1_Controller)
 266     {
 267       CommandAllocationLength = offsetof(DAC960_Command_T, V1.EndMarker);
 268       CommandAllocationGroupSize = DAC960_V1_CommandAllocationGroupSize;
 269       ScatterGatherPool = pci_pool_create("DAC960_V1_ScatterGather",
 270                 Controller->PCIDevice,
 271         DAC960_V1_ScatterGatherLimit * sizeof(DAC960_V1_ScatterGatherSegment_T),
 272         sizeof(DAC960_V1_ScatterGatherSegment_T), 0);
 273       if (ScatterGatherPool == NULL)
 274             return DAC960_Failure(Controller,
 275                         "AUXILIARY STRUCTURE CREATION (SG)");
 276       Controller->ScatterGatherPool = ScatterGatherPool;
 277     }
 278   else
 279     {
 280       CommandAllocationLength = offsetof(DAC960_Command_T, V2.EndMarker);
 281       CommandAllocationGroupSize = DAC960_V2_CommandAllocationGroupSize;
 282       ScatterGatherPool = pci_pool_create("DAC960_V2_ScatterGather",
 283                 Controller->PCIDevice,
 284         DAC960_V2_ScatterGatherLimit * sizeof(DAC960_V2_ScatterGatherSegment_T),
 285         sizeof(DAC960_V2_ScatterGatherSegment_T), 0);
 286       if (ScatterGatherPool == NULL)
 287             return DAC960_Failure(Controller,
 288                         "AUXILIARY STRUCTURE CREATION (SG)");
 289       RequestSensePool = pci_pool_create("DAC960_V2_RequestSense",
 290                 Controller->PCIDevice, sizeof(DAC960_SCSI_RequestSense_T),
 291                 sizeof(int), 0);
 292       if (RequestSensePool == NULL) {
 293             pci_pool_destroy(ScatterGatherPool);
 294             return DAC960_Failure(Controller,
 295                         "AUXILIARY STRUCTURE CREATION (SG)");
 296       }
 297       Controller->ScatterGatherPool = ScatterGatherPool;
 298       Controller->V2.RequestSensePool = RequestSensePool;
 299     }
 300   Controller->CommandAllocationGroupSize = CommandAllocationGroupSize;
 301   Controller->FreeCommands = NULL;
 302   for (CommandIdentifier = 1;
 303        CommandIdentifier <= Controller->DriverQueueDepth;
 304        CommandIdentifier++)
 305     {
 306       DAC960_Command_T *Command;
 307       if (--CommandsRemaining <= 0)
 308         {
 309           CommandsRemaining =
 310                 Controller->DriverQueueDepth - CommandIdentifier + 1;
 311           if (CommandsRemaining > CommandAllocationGroupSize)
 312                 CommandsRemaining = CommandAllocationGroupSize;
 313           CommandGroupByteCount =
 314                 CommandsRemaining * CommandAllocationLength;
 315           AllocationPointer = kzalloc(CommandGroupByteCount, GFP_ATOMIC);
 316           if (AllocationPointer == NULL)
 317                 return DAC960_Failure(Controller,
 318                                         "AUXILIARY STRUCTURE CREATION");
 319          }
 320       Command = (DAC960_Command_T *) AllocationPointer;
 321       AllocationPointer += CommandAllocationLength;
 322       Command->CommandIdentifier = CommandIdentifier;
 323       Command->Controller = Controller;
 324       Command->Next = Controller->FreeCommands;
 325       Controller->FreeCommands = Command;
 326       Controller->Commands[CommandIdentifier-1] = Command;
 327       ScatterGatherCPU = pci_pool_alloc(ScatterGatherPool, SLAB_ATOMIC,
 328                                                         &ScatterGatherDMA);
 329       if (ScatterGatherCPU == NULL)
 330           return DAC960_Failure(Controller, "AUXILIARY STRUCTURE CREATION");
 331
 332       if (RequestSensePool != NULL) {
 333           RequestSenseCPU = pci_pool_alloc(RequestSensePool, SLAB_ATOMIC,
 334                                                 &RequestSenseDMA);
 335           if (RequestSenseCPU == NULL) {
 336                 pci_pool_free(ScatterGatherPool, ScatterGatherCPU,
 337                                 ScatterGatherDMA);
 338                 return DAC960_Failure(Controller,
 339                                         "AUXILIARY STRUCTURE CREATION");
 340           }
 341         }
 342      if (Controller->FirmwareType == DAC960_V1_Controller) {
 343         Command->cmd_sglist = Command->V1.ScatterList;
 344         Command->V1.ScatterGatherList =
 345                 (DAC960_V1_ScatterGatherSegment_T *)ScatterGatherCPU;
 346         Command->V1.ScatterGatherListDMA = ScatterGatherDMA;
 347       } else {
 348         Command->cmd_sglist = Command->V2.ScatterList;
 349         Command->V2.ScatterGatherList =
 350                 (DAC960_V2_ScatterGatherSegment_T *)ScatterGatherCPU;
 351         Command->V2.ScatterGatherListDMA = ScatterGatherDMA;
 352         Command->V2.RequestSense =
 353                                 (DAC960_SCSI_RequestSense_T *)RequestSenseCPU;
 354         Command->V2.RequestSenseDMA = RequestSenseDMA;
 355       }
 356     }
 357   return true;
 358 }
 359
 360
 361 /*
 362   DAC960_DestroyAuxiliaryStructures deallocates the auxiliary data
 363   structures for Controller.
 364 */
 365
 366 static void DAC960_DestroyAuxiliaryStructures(DAC960_Controller_T *Controller)
 367 {
 368   int i;
 369   struct pci_pool *ScatterGatherPool = Controller->ScatterGatherPool;
 370   struct pci_pool *RequestSensePool = NULL;
 371   void *ScatterGatherCPU;
 372   dma_addr_t ScatterGatherDMA;
 373   void *RequestSenseCPU;
 374   dma_addr_t RequestSenseDMA;
 375   DAC960_Command_T *CommandGroup = NULL;
 376
 377
 378   if (Controller->FirmwareType == DAC960_V2_Controller)
 379         RequestSensePool = Controller->V2.RequestSensePool;
 380
 381   Controller->FreeCommands = NULL;
 382   for (i = 0; i < Controller->DriverQueueDepth; i++)
 383     {
 384       DAC960_Command_T *Command = Controller->Commands[i];
 385
 386       if (Command == NULL)
 387           continue;
 388
 389       if (Controller->FirmwareType == DAC960_V1_Controller) {
 390           ScatterGatherCPU = (void *)Command->V1.ScatterGatherList;
 391           ScatterGatherDMA = Command->V1.ScatterGatherListDMA;
 392           RequestSenseCPU = NULL;
 393           RequestSenseDMA = (dma_addr_t)0;
 394       } else {
 395           ScatterGatherCPU = (void *)Command->V2.ScatterGatherList;
 396           ScatterGatherDMA = Command->V2.ScatterGatherListDMA;
 397           RequestSenseCPU = (void *)Command->V2.RequestSense;
 398           RequestSenseDMA = Command->V2.RequestSenseDMA;
 399       }
 400       if (ScatterGatherCPU != NULL)
 401           pci_pool_free(ScatterGatherPool, ScatterGatherCPU, ScatterGatherDMA);
 402       if (RequestSenseCPU != NULL)
 403           pci_pool_free(RequestSensePool, RequestSenseCPU, RequestSenseDMA);
 404
 405       if ((Command->CommandIdentifier
 406            % Controller->CommandAllocationGroupSize) == 1) {
 407            /*
 408             * We can't free the group of commands until all of the
 409             * request sense and scatter gather dma structures are free.
 410             * Remember the beginning of the group, but don't free it
 411             * until we've reached the beginning of the next group.
 412             */
 413            kfree(CommandGroup);
 414            CommandGroup = Command;
 415       }
 416       Controller->Commands[i] = NULL;
 417     }
 418   kfree(CommandGroup);
 419
 420   if (Controller->CombinedStatusBuffer != NULL)
 421     {
 422       kfree(Controller->CombinedStatusBuffer);
 423       Controller->CombinedStatusBuffer = NULL;
 424       Controller->CurrentStatusBuffer = NULL;
 425     }
 426
 427   if (ScatterGatherPool != NULL)
 428         pci_pool_destroy(ScatterGatherPool);
 429   if (Controller->FirmwareType == DAC960_V1_Controller)
 430         return;
 431
 432   if (RequestSensePool != NULL)
 433         pci_pool_destroy(RequestSensePool);
 434
 435   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
 436         kfree(Controller->V2.LogicalDeviceInformation[i]);
 437         Controller->V2.LogicalDeviceInformation[i] = NULL;
 438   }
 439
 440   for (i = 0; i < DAC960_V2_MaxPhysicalDevices; i++)
 441     {
 442       kfree(Controller->V2.PhysicalDeviceInformation[i]);
 443       Controller->V2.PhysicalDeviceInformation[i] = NULL;
 444       kfree(Controller->V2.InquiryUnitSerialNumber[i]);
 445       Controller->V2.InquiryUnitSerialNumber[i] = NULL;
 446     }
 447 }
 448
 449
 450 /*
 451   DAC960_V1_ClearCommand clears critical fields of Command for DAC960 V1
 452   Firmware Controllers.
 453 */
 454
 455 static inline void DAC960_V1_ClearCommand(DAC960_Command_T *Command)
 456 {
 457   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 458   memset(CommandMailbox, 0, sizeof(DAC960_V1_CommandMailbox_T));
 459   Command->V1.CommandStatus = 0;
 460 }
 461
 462
 463 /*
 464   DAC960_V2_ClearCommand clears critical fields of Command for DAC960 V2
 465   Firmware Controllers.
 466 */
 467
 468 static inline void DAC960_V2_ClearCommand(DAC960_Command_T *Command)
 469 {
 470   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 471   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
 472   Command->V2.CommandStatus = 0;
 473 }
 474
 475
 476 /*
 477   DAC960_AllocateCommand allocates a Command structure from Controller's
 478   free list.  During driver initialization, a special initialization command
 479   has been placed on the free list to guarantee that command allocation can
 480   never fail.
 481 */
 482
 483 static inline DAC960_Command_T *DAC960_AllocateCommand(DAC960_Controller_T
 484                                                        *Controller)
 485 {
 486   DAC960_Command_T *Command = Controller->FreeCommands;
 487   if (Command == NULL) return NULL;
 488   Controller->FreeCommands = Command->Next;
 489   Command->Next = NULL;
 490   return Command;
 491 }
 492
 493
 494 /*
 495   DAC960_DeallocateCommand deallocates Command, returning it to Controller's
 496   free list.
 497 */
 498
 499 static inline void DAC960_DeallocateCommand(DAC960_Command_T *Command)
 500 {
 501   DAC960_Controller_T *Controller = Command->Controller;
 502
 503   Command->Request = NULL;
 504   Command->Next = Controller->FreeCommands;
 505   Controller->FreeCommands = Command;
 506 }
 507
 508
 509 /*
 510   DAC960_WaitForCommand waits for a wake_up on Controller's Command Wait Queue.
 511 */
 512
 513 static void DAC960_WaitForCommand(DAC960_Controller_T *Controller)
 514 {
 515   spin_unlock_irq(&Controller->queue_lock);
 516   __wait_event(Controller->CommandWaitQueue, Controller->FreeCommands);
 517   spin_lock_irq(&Controller->queue_lock);
 518 }
 519
 520 /*
 521   DAC960_GEM_QueueCommand queues Command for DAC960 GEM Series Controllers.
 522 */
 523
 524 static void DAC960_GEM_QueueCommand(DAC960_Command_T *Command)
 525 {
 526   DAC960_Controller_T *Controller = Command->Controller;
 527   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 528   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 529   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 530       Controller->V2.NextCommandMailbox;
 531
 532   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 533   DAC960_GEM_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 534
 535   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 536       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 537       DAC960_GEM_MemoryMailboxNewCommand(ControllerBaseAddress);
 538
 539   Controller->V2.PreviousCommandMailbox2 =
 540       Controller->V2.PreviousCommandMailbox1;
 541   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 542
 543   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 544       NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 545
 546   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 547 }
 548
 549 /*
 550   DAC960_BA_QueueCommand queues Command for DAC960 BA Series Controllers.
 551 */
 552
 553 static void DAC960_BA_QueueCommand(DAC960_Command_T *Command)
 554 {
 555   DAC960_Controller_T *Controller = Command->Controller;
 556   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 557   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 558   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 559     Controller->V2.NextCommandMailbox;
 560   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 561   DAC960_BA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 562   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 563       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 564     DAC960_BA_MemoryMailboxNewCommand(ControllerBaseAddress);
 565   Controller->V2.PreviousCommandMailbox2 =
 566     Controller->V2.PreviousCommandMailbox1;
 567   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 568   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 569     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 570   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 571 }
 572
 573
 574 /*
 575   DAC960_LP_QueueCommand queues Command for DAC960 LP Series Controllers.
 576 */
 577
 578 static void DAC960_LP_QueueCommand(DAC960_Command_T *Command)
 579 {
 580   DAC960_Controller_T *Controller = Command->Controller;
 581   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 582   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 583   DAC960_V2_CommandMailbox_T *NextCommandMailbox =
 584     Controller->V2.NextCommandMailbox;
 585   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 586   DAC960_LP_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 587   if (Controller->V2.PreviousCommandMailbox1->Words[0] == 0 ||
 588       Controller->V2.PreviousCommandMailbox2->Words[0] == 0)
 589     DAC960_LP_MemoryMailboxNewCommand(ControllerBaseAddress);
 590   Controller->V2.PreviousCommandMailbox2 =
 591     Controller->V2.PreviousCommandMailbox1;
 592   Controller->V2.PreviousCommandMailbox1 = NextCommandMailbox;
 593   if (++NextCommandMailbox > Controller->V2.LastCommandMailbox)
 594     NextCommandMailbox = Controller->V2.FirstCommandMailbox;
 595   Controller->V2.NextCommandMailbox = NextCommandMailbox;
 596 }
 597
 598
 599 /*
 600   DAC960_LA_QueueCommandDualMode queues Command for DAC960 LA Series
 601   Controllers with Dual Mode Firmware.
 602 */
 603
 604 static void DAC960_LA_QueueCommandDualMode(DAC960_Command_T *Command)
 605 {
 606   DAC960_Controller_T *Controller = Command->Controller;
 607   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 608   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 609   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 610     Controller->V1.NextCommandMailbox;
 611   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 612   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 613   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 614       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 615     DAC960_LA_MemoryMailboxNewCommand(ControllerBaseAddress);
 616   Controller->V1.PreviousCommandMailbox2 =
 617     Controller->V1.PreviousCommandMailbox1;
 618   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 619   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 620     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 621   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 622 }
 623
 624
 625 /*
 626   DAC960_LA_QueueCommandSingleMode queues Command for DAC960 LA Series
 627   Controllers with Single Mode Firmware.
 628 */
 629
 630 static void DAC960_LA_QueueCommandSingleMode(DAC960_Command_T *Command)
 631 {
 632   DAC960_Controller_T *Controller = Command->Controller;
 633   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 634   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 635   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 636     Controller->V1.NextCommandMailbox;
 637   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 638   DAC960_LA_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 639   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 640       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 641     DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
 642   Controller->V1.PreviousCommandMailbox2 =
 643     Controller->V1.PreviousCommandMailbox1;
 644   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 645   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 646     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 647   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 648 }
 649
 650
 651 /*
 652   DAC960_PG_QueueCommandDualMode queues Command for DAC960 PG Series
 653   Controllers with Dual Mode Firmware.
 654 */
 655
 656 static void DAC960_PG_QueueCommandDualMode(DAC960_Command_T *Command)
 657 {
 658   DAC960_Controller_T *Controller = Command->Controller;
 659   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 660   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 661   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 662     Controller->V1.NextCommandMailbox;
 663   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 664   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 665   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 666       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 667     DAC960_PG_MemoryMailboxNewCommand(ControllerBaseAddress);
 668   Controller->V1.PreviousCommandMailbox2 =
 669     Controller->V1.PreviousCommandMailbox1;
 670   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 671   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 672     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 673   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 674 }
 675
 676
 677 /*
 678   DAC960_PG_QueueCommandSingleMode queues Command for DAC960 PG Series
 679   Controllers with Single Mode Firmware.
 680 */
 681
 682 static void DAC960_PG_QueueCommandSingleMode(DAC960_Command_T *Command)
 683 {
 684   DAC960_Controller_T *Controller = Command->Controller;
 685   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 686   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 687   DAC960_V1_CommandMailbox_T *NextCommandMailbox =
 688     Controller->V1.NextCommandMailbox;
 689   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 690   DAC960_PG_WriteCommandMailbox(NextCommandMailbox, CommandMailbox);
 691   if (Controller->V1.PreviousCommandMailbox1->Words[0] == 0 ||
 692       Controller->V1.PreviousCommandMailbox2->Words[0] == 0)
 693     DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
 694   Controller->V1.PreviousCommandMailbox2 =
 695     Controller->V1.PreviousCommandMailbox1;
 696   Controller->V1.PreviousCommandMailbox1 = NextCommandMailbox;
 697   if (++NextCommandMailbox > Controller->V1.LastCommandMailbox)
 698     NextCommandMailbox = Controller->V1.FirstCommandMailbox;
 699   Controller->V1.NextCommandMailbox = NextCommandMailbox;
 700 }
 701
 702
 703 /*
 704   DAC960_PD_QueueCommand queues Command for DAC960 PD Series Controllers.
 705 */
 706
 707 static void DAC960_PD_QueueCommand(DAC960_Command_T *Command)
 708 {
 709   DAC960_Controller_T *Controller = Command->Controller;
 710   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 711   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 712   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 713   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 714     udelay(1);
 715   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 716   DAC960_PD_NewCommand(ControllerBaseAddress);
 717 }
 718
 719
 720 /*
 721   DAC960_P_QueueCommand queues Command for DAC960 P Series Controllers.
 722 */
 723
 724 static void DAC960_P_QueueCommand(DAC960_Command_T *Command)
 725 {
 726   DAC960_Controller_T *Controller = Command->Controller;
 727   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
 728   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 729   CommandMailbox->Common.CommandIdentifier = Command->CommandIdentifier;
 730   switch (CommandMailbox->Common.CommandOpcode)
 731     {
 732     case DAC960_V1_Enquiry:
 733       CommandMailbox->Common.CommandOpcode = DAC960_V1_Enquiry_Old;
 734       break;
 735     case DAC960_V1_GetDeviceState:
 736       CommandMailbox->Common.CommandOpcode = DAC960_V1_GetDeviceState_Old;
 737       break;
 738     case DAC960_V1_Read:
 739       CommandMailbox->Common.CommandOpcode = DAC960_V1_Read_Old;
 740       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 741       break;
 742     case DAC960_V1_Write:
 743       CommandMailbox->Common.CommandOpcode = DAC960_V1_Write_Old;
 744       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 745       break;
 746     case DAC960_V1_ReadWithScatterGather:
 747       CommandMailbox->Common.CommandOpcode =
 748         DAC960_V1_ReadWithScatterGather_Old;
 749       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 750       break;
 751     case DAC960_V1_WriteWithScatterGather:
 752       CommandMailbox->Common.CommandOpcode =
 753         DAC960_V1_WriteWithScatterGather_Old;
 754       DAC960_PD_To_P_TranslateReadWriteCommand(CommandMailbox);
 755       break;
 756     default:
 757       break;
 758     }
 759   while (DAC960_PD_MailboxFullP(ControllerBaseAddress))
 760     udelay(1);
 761   DAC960_PD_WriteCommandMailbox(ControllerBaseAddress, CommandMailbox);
 762   DAC960_PD_NewCommand(ControllerBaseAddress);
 763 }
 764
 765
 766 /*
 767   DAC960_ExecuteCommand executes Command and waits for completion.
 768 */
 769
 770 static void DAC960_ExecuteCommand(DAC960_Command_T *Command)
 771 {
 772   DAC960_Controller_T *Controller = Command->Controller;
 773   DECLARE_COMPLETION(Completion);
 774   unsigned long flags;
 775   Command->Completion = &Completion;
 776
 777   spin_lock_irqsave(&Controller->queue_lock, flags);
 778   DAC960_QueueCommand(Command);
 779   spin_unlock_irqrestore(&Controller->queue_lock, flags);
 780
 781   if (in_interrupt())
 782           return;
 783   wait_for_completion(&Completion);
 784 }
 785
 786
 787 /*
 788   DAC960_V1_ExecuteType3 executes a DAC960 V1 Firmware Controller Type 3
 789   Command and waits for completion.  It returns true on success and false
 790   on failure.
 791 */
 792
 793 static boolean DAC960_V1_ExecuteType3(DAC960_Controller_T *Controller,
 794                                       DAC960_V1_CommandOpcode_T CommandOpcode,
 795                                       dma_addr_t DataDMA)
 796 {
 797   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 798   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 799   DAC960_V1_CommandStatus_T CommandStatus;
 800   DAC960_V1_ClearCommand(Command);
 801   Command->CommandType = DAC960_ImmediateCommand;
 802   CommandMailbox->Type3.CommandOpcode = CommandOpcode;
 803   CommandMailbox->Type3.BusAddress = DataDMA;
 804   DAC960_ExecuteCommand(Command);
 805   CommandStatus = Command->V1.CommandStatus;
 806   DAC960_DeallocateCommand(Command);
 807   return (CommandStatus == DAC960_V1_NormalCompletion);
 808 }
 809
 810
 811 /*
 812   DAC960_V1_ExecuteTypeB executes a DAC960 V1 Firmware Controller Type 3B
 813   Command and waits for completion.  It returns true on success and false
 814   on failure.
 815 */
 816
 817 static boolean DAC960_V1_ExecuteType3B(DAC960_Controller_T *Controller,
 818                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 819                                        unsigned char CommandOpcode2,
 820                                        dma_addr_t DataDMA)
 821 {
 822   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 823   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 824   DAC960_V1_CommandStatus_T CommandStatus;
 825   DAC960_V1_ClearCommand(Command);
 826   Command->CommandType = DAC960_ImmediateCommand;
 827   CommandMailbox->Type3B.CommandOpcode = CommandOpcode;
 828   CommandMailbox->Type3B.CommandOpcode2 = CommandOpcode2;
 829   CommandMailbox->Type3B.BusAddress = DataDMA;
 830   DAC960_ExecuteCommand(Command);
 831   CommandStatus = Command->V1.CommandStatus;
 832   DAC960_DeallocateCommand(Command);
 833   return (CommandStatus == DAC960_V1_NormalCompletion);
 834 }
 835
 836
 837 /*
 838   DAC960_V1_ExecuteType3D executes a DAC960 V1 Firmware Controller Type 3D
 839   Command and waits for completion.  It returns true on success and false
 840   on failure.
 841 */
 842
 843 static boolean DAC960_V1_ExecuteType3D(DAC960_Controller_T *Controller,
 844                                        DAC960_V1_CommandOpcode_T CommandOpcode,
 845                                        unsigned char Channel,
 846                                        unsigned char TargetID,
 847                                        dma_addr_t DataDMA)
 848 {
 849   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 850   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
 851   DAC960_V1_CommandStatus_T CommandStatus;
 852   DAC960_V1_ClearCommand(Command);
 853   Command->CommandType = DAC960_ImmediateCommand;
 854   CommandMailbox->Type3D.CommandOpcode = CommandOpcode;
 855   CommandMailbox->Type3D.Channel = Channel;
 856   CommandMailbox->Type3D.TargetID = TargetID;
 857   CommandMailbox->Type3D.BusAddress = DataDMA;
 858   DAC960_ExecuteCommand(Command);
 859   CommandStatus = Command->V1.CommandStatus;
 860   DAC960_DeallocateCommand(Command);
 861   return (CommandStatus == DAC960_V1_NormalCompletion);
 862 }
 863
 864
 865 /*
 866   DAC960_V2_GeneralInfo executes a DAC960 V2 Firmware General Information
 867   Reading IOCTL Command and waits for completion.  It returns true on success
 868   and false on failure.
 869
 870   Return data in The controller's HealthStatusBuffer, which is dma-able memory
 871 */
 872
 873 static boolean DAC960_V2_GeneralInfo(DAC960_Controller_T *Controller)
 874 {
 875   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 876   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 877   DAC960_V2_CommandStatus_T CommandStatus;
 878   DAC960_V2_ClearCommand(Command);
 879   Command->CommandType = DAC960_ImmediateCommand;
 880   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
 881   CommandMailbox->Common.CommandControlBits
 882                         .DataTransferControllerToHost = true;
 883   CommandMailbox->Common.CommandControlBits
 884                         .NoAutoRequestSense = true;
 885   CommandMailbox->Common.DataTransferSize = sizeof(DAC960_V2_HealthStatusBuffer_T);
 886   CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_GetHealthStatus;
 887   CommandMailbox->Common.DataTransferMemoryAddress
 888                         .ScatterGatherSegments[0]
 889                         .SegmentDataPointer =
 890     Controller->V2.HealthStatusBufferDMA;
 891   CommandMailbox->Common.DataTransferMemoryAddress
 892                         .ScatterGatherSegments[0]
 893                         .SegmentByteCount =
 894     CommandMailbox->Common.DataTransferSize;
 895   DAC960_ExecuteCommand(Command);
 896   CommandStatus = Command->V2.CommandStatus;
 897   DAC960_DeallocateCommand(Command);
 898   return (CommandStatus == DAC960_V2_NormalCompletion);
 899 }
 900
 901
 902 /*
 903   DAC960_V2_ControllerInfo executes a DAC960 V2 Firmware Controller
 904   Information Reading IOCTL Command and waits for completion.  It returns
 905   true on success and false on failure.
 906
 907   Data is returned in the controller's V2.NewControllerInformation dma-able
 908   memory buffer.
 909 */
 910
 911 static boolean DAC960_V2_NewControllerInfo(DAC960_Controller_T *Controller)
 912 {
 913   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 914   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 915   DAC960_V2_CommandStatus_T CommandStatus;
 916   DAC960_V2_ClearCommand(Command);
 917   Command->CommandType = DAC960_ImmediateCommand;
 918   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
 919   CommandMailbox->ControllerInfo.CommandControlBits
 920                                 .DataTransferControllerToHost = true;
 921   CommandMailbox->ControllerInfo.CommandControlBits
 922                                 .NoAutoRequestSense = true;
 923   CommandMailbox->ControllerInfo.DataTransferSize = sizeof(DAC960_V2_ControllerInfo_T);
 924   CommandMailbox->ControllerInfo.ControllerNumber = 0;
 925   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
 926   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 927                                 .ScatterGatherSegments[0]
 928                                 .SegmentDataPointer =
 929         Controller->V2.NewControllerInformationDMA;
 930   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
 931                                 .ScatterGatherSegments[0]
 932                                 .SegmentByteCount =
 933     CommandMailbox->ControllerInfo.DataTransferSize;
 934   DAC960_ExecuteCommand(Command);
 935   CommandStatus = Command->V2.CommandStatus;
 936   DAC960_DeallocateCommand(Command);
 937   return (CommandStatus == DAC960_V2_NormalCompletion);
 938 }
 939
 940
 941 /*
 942   DAC960_V2_LogicalDeviceInfo executes a DAC960 V2 Firmware Controller Logical
 943   Device Information Reading IOCTL Command and waits for completion.  It
 944   returns true on success and false on failure.
 945
 946   Data is returned in the controller's V2.NewLogicalDeviceInformation
 947 */
 948
 949 static boolean DAC960_V2_NewLogicalDeviceInfo(DAC960_Controller_T *Controller,
 950                                            unsigned short LogicalDeviceNumber)
 951 {
 952   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
 953   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
 954   DAC960_V2_CommandStatus_T CommandStatus;
 955
 956   DAC960_V2_ClearCommand(Command);
 957   Command->CommandType = DAC960_ImmediateCommand;
 958   CommandMailbox->LogicalDeviceInfo.CommandOpcode =
 959                                 DAC960_V2_IOCTL;
 960   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 961                                    .DataTransferControllerToHost = true;
 962   CommandMailbox->LogicalDeviceInfo.CommandControlBits
 963                                    .NoAutoRequestSense = true;
 964   CommandMailbox->LogicalDeviceInfo.DataTransferSize =
 965                                 sizeof(DAC960_V2_LogicalDeviceInfo_T);
 966   CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
 967     LogicalDeviceNumber;
 968   CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode = DAC960_V2_GetLogicalDeviceInfoValid;
 969   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 970                                    .ScatterGatherSegments[0]
 971                                    .SegmentDataPointer =
 972         Controller->V2.NewLogicalDeviceInformationDMA;
 973   CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
 974                                    .ScatterGatherSegments[0]
 975                                    .SegmentByteCount =
 976     CommandMailbox->LogicalDeviceInfo.DataTransferSize;
 977   DAC960_ExecuteCommand(Command);
 978   CommandStatus = Command->V2.CommandStatus;
 979   DAC960_DeallocateCommand(Command);
 980   return (CommandStatus == DAC960_V2_NormalCompletion);
 981 }
 982
 983
 984 /*
 985   DAC960_V2_PhysicalDeviceInfo executes a DAC960 V2 Firmware Controller "Read
 986   Physical Device Information" IOCTL Command and waits for completion.  It
 987   returns true on success and false on failure.
 988
 989   The Channel, TargetID, LogicalUnit arguments should be 0 the first time
 990   this function is called for a given controller.  This will return data
 991   for the "first" device on that controller.  The returned data includes a
 992   Channel, TargetID, LogicalUnit that can be passed in to this routine to
 993   get data for the NEXT device on that controller.
 994
 995   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
 996   memory buffer.
 997
 998 */
 999
1000 static boolean DAC960_V2_NewPhysicalDeviceInfo(DAC960_Controller_T *Controller,
1001                                             unsigned char Channel,
1002                                             unsigned char TargetID,
1003                                             unsigned char LogicalUnit)
1004 {
1005   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1006   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1007   DAC960_V2_CommandStatus_T CommandStatus;
1008
1009   DAC960_V2_ClearCommand(Command);
1010   Command->CommandType = DAC960_ImmediateCommand;
1011   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
1012   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1013                                     .DataTransferControllerToHost = true;
1014   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
1015                                     .NoAutoRequestSense = true;
1016   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
1017                                 sizeof(DAC960_V2_PhysicalDeviceInfo_T);
1018   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit = LogicalUnit;
1019   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
1020   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
1021   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
1022                                         DAC960_V2_GetPhysicalDeviceInfoValid;
1023   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1024                                     .ScatterGatherSegments[0]
1025                                     .SegmentDataPointer =
1026                                         Controller->V2.NewPhysicalDeviceInformationDMA;
1027   CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
1028                                     .ScatterGatherSegments[0]
1029                                     .SegmentByteCount =
1030     CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
1031   DAC960_ExecuteCommand(Command);
1032   CommandStatus = Command->V2.CommandStatus;
1033   DAC960_DeallocateCommand(Command);
1034   return (CommandStatus == DAC960_V2_NormalCompletion);
1035 }
1036
1037
1038 static void DAC960_V2_ConstructNewUnitSerialNumber(
1039         DAC960_Controller_T *Controller,
1040         DAC960_V2_CommandMailbox_T *CommandMailbox, int Channel, int TargetID,
1041         int LogicalUnit)
1042 {
1043       CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10_Passthru;
1044       CommandMailbox->SCSI_10.CommandControlBits
1045                              .DataTransferControllerToHost = true;
1046       CommandMailbox->SCSI_10.CommandControlBits
1047                              .NoAutoRequestSense = true;
1048       CommandMailbox->SCSI_10.DataTransferSize =
1049         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1050       CommandMailbox->SCSI_10.PhysicalDevice.LogicalUnit = LogicalUnit;
1051       CommandMailbox->SCSI_10.PhysicalDevice.TargetID = TargetID;
1052       CommandMailbox->SCSI_10.PhysicalDevice.Channel = Channel;
1053       CommandMailbox->SCSI_10.CDBLength = 6;
1054       CommandMailbox->SCSI_10.SCSI_CDB[0] = 0x12; /* INQUIRY */
1055       CommandMailbox->SCSI_10.SCSI_CDB[1] = 1; /* EVPD = 1 */
1056       CommandMailbox->SCSI_10.SCSI_CDB[2] = 0x80; /* Page Code */
1057       CommandMailbox->SCSI_10.SCSI_CDB[3] = 0; /* Reserved */
1058       CommandMailbox->SCSI_10.SCSI_CDB[4] =
1059         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1060       CommandMailbox->SCSI_10.SCSI_CDB[5] = 0; /* Control */
1061       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1062                              .ScatterGatherSegments[0]
1063                              .SegmentDataPointer =
1064                 Controller->V2.NewInquiryUnitSerialNumberDMA;
1065       CommandMailbox->SCSI_10.DataTransferMemoryAddress
1066                              .ScatterGatherSegments[0]
1067                              .SegmentByteCount =
1068                 CommandMailbox->SCSI_10.DataTransferSize;
1069 }
1070
1071
1072 /*
1073   DAC960_V2_NewUnitSerialNumber executes an SCSI pass-through
1074   Inquiry command to a SCSI device identified by Channel number,
1075   Target id, Logical Unit Number.  This function Waits for completion
1076   of the command.
1077
1078   The return data includes Unit Serial Number information for the
1079   specified device.
1080
1081   Data is stored in the controller's V2.NewPhysicalDeviceInfo dma-able
1082   memory buffer.
1083 */
1084
1085 static boolean DAC960_V2_NewInquiryUnitSerialNumber(DAC960_Controller_T *Controller,
1086                         int Channel, int TargetID, int LogicalUnit)
1087 {
1088       DAC960_Command_T *Command;
1089       DAC960_V2_CommandMailbox_T *CommandMailbox;
1090       DAC960_V2_CommandStatus_T CommandStatus;
1091
1092       Command = DAC960_AllocateCommand(Controller);
1093       CommandMailbox = &Command->V2.CommandMailbox;
1094       DAC960_V2_ClearCommand(Command);
1095       Command->CommandType = DAC960_ImmediateCommand;
1096
1097       DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
1098                         Channel, TargetID, LogicalUnit);
1099
1100       DAC960_ExecuteCommand(Command);
1101       CommandStatus = Command->V2.CommandStatus;
1102       DAC960_DeallocateCommand(Command);
1103       return (CommandStatus == DAC960_V2_NormalCompletion);
1104 }
1105
1106
1107 /*
1108   DAC960_V2_DeviceOperation executes a DAC960 V2 Firmware Controller Device
1109   Operation IOCTL Command and waits for completion.  It returns true on
1110   success and false on failure.
1111 */
1112
1113 static boolean DAC960_V2_DeviceOperation(DAC960_Controller_T *Controller,
1114                                          DAC960_V2_IOCTL_Opcode_T IOCTL_Opcode,
1115                                          DAC960_V2_OperationDevice_T
1116                                            OperationDevice)
1117 {
1118   DAC960_Command_T *Command = DAC960_AllocateCommand(Controller);
1119   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
1120   DAC960_V2_CommandStatus_T CommandStatus;
1121   DAC960_V2_ClearCommand(Command);
1122   Command->CommandType = DAC960_ImmediateCommand;
1123   CommandMailbox->DeviceOperation.CommandOpcode = DAC960_V2_IOCTL;
1124   CommandMailbox->DeviceOperation.CommandControlBits
1125                                  .DataTransferControllerToHost = true;
1126   CommandMailbox->DeviceOperation.CommandControlBits
1127                                  .NoAutoRequestSense = true;
1128   CommandMailbox->DeviceOperation.IOCTL_Opcode = IOCTL_Opcode;
1129   CommandMailbox->DeviceOperation.OperationDevice = OperationDevice;
1130   DAC960_ExecuteCommand(Command);
1131   CommandStatus = Command->V2.CommandStatus;
1132   DAC960_DeallocateCommand(Command);
1133   return (CommandStatus == DAC960_V2_NormalCompletion);
1134 }
1135
1136
1137 /*
1138   DAC960_V1_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1139   for DAC960 V1 Firmware Controllers.
1140
1141   PD and P controller types have no memory mailbox, but still need the
1142   other dma mapped memory.
1143 */
1144
1145 static boolean DAC960_V1_EnableMemoryMailboxInterface(DAC960_Controller_T
1146                                                       *Controller)
1147 {
1148   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1149   DAC960_HardwareType_T hw_type = Controller->HardwareType;
1150   struct pci_dev *PCI_Device = Controller->PCIDevice;
1151   struct dma_loaf *DmaPages = &Controller->DmaPages;
1152   size_t DmaPagesSize;
1153   size_t CommandMailboxesSize;
1154   size_t StatusMailboxesSize;
1155
1156   DAC960_V1_CommandMailbox_T *CommandMailboxesMemory;
1157   dma_addr_t CommandMailboxesMemoryDMA;
1158
1159   DAC960_V1_StatusMailbox_T *StatusMailboxesMemory;
1160   dma_addr_t StatusMailboxesMemoryDMA;
1161
1162   DAC960_V1_CommandMailbox_T CommandMailbox;
1163   DAC960_V1_CommandStatus_T CommandStatus;
1164   int TimeoutCounter;
1165   int i;
1166
1167
1168   if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V1_PciDmaMask))
1169         return DAC960_Failure(Controller, "DMA mask out of range");
1170   Controller->BounceBufferLimit = DAC690_V1_PciDmaMask;
1171
1172   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller)) {
1173     CommandMailboxesSize =  0;
1174     StatusMailboxesSize = 0;
1175   } else {
1176     CommandMailboxesSize =  DAC960_V1_CommandMailboxCount * sizeof(DAC960_V1_CommandMailbox_T);
1177     StatusMailboxesSize = DAC960_V1_StatusMailboxCount * sizeof(DAC960_V1_StatusMailbox_T);
1178   }
1179   DmaPagesSize = CommandMailboxesSize + StatusMailboxesSize +
1180         sizeof(DAC960_V1_DCDB_T) + sizeof(DAC960_V1_Enquiry_T) +
1181         sizeof(DAC960_V1_ErrorTable_T) + sizeof(DAC960_V1_EventLogEntry_T) +
1182         sizeof(DAC960_V1_RebuildProgress_T) +
1183         sizeof(DAC960_V1_LogicalDriveInformationArray_T) +
1184         sizeof(DAC960_V1_BackgroundInitializationStatus_T) +
1185         sizeof(DAC960_V1_DeviceState_T) + sizeof(DAC960_SCSI_Inquiry_T) +
1186         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
1187
1188   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize))
1189         return false;
1190
1191
1192   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1193         goto skip_mailboxes;
1194
1195   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1196                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1197
1198   /* These are the base addresses for the command memory mailbox array */
1199   Controller->V1.FirstCommandMailbox = CommandMailboxesMemory;
1200   Controller->V1.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1201
1202   CommandMailboxesMemory += DAC960_V1_CommandMailboxCount - 1;
1203   Controller->V1.LastCommandMailbox = CommandMailboxesMemory;
1204   Controller->V1.NextCommandMailbox = Controller->V1.FirstCommandMailbox;
1205   Controller->V1.PreviousCommandMailbox1 = Controller->V1.LastCommandMailbox;
1206   Controller->V1.PreviousCommandMailbox2 =
1207                                         Controller->V1.LastCommandMailbox - 1;
1208
1209   /* These are the base addresses for the status memory mailbox array */
1210   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1211                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1212
1213   Controller->V1.FirstStatusMailbox = StatusMailboxesMemory;
1214   Controller->V1.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1215   StatusMailboxesMemory += DAC960_V1_StatusMailboxCount - 1;
1216   Controller->V1.LastStatusMailbox = StatusMailboxesMemory;
1217   Controller->V1.NextStatusMailbox = Controller->V1.FirstStatusMailbox;
1218
1219 skip_mailboxes:
1220   Controller->V1.MonitoringDCDB = slice_dma_loaf(DmaPages,
1221                 sizeof(DAC960_V1_DCDB_T),
1222                 &Controller->V1.MonitoringDCDB_DMA);
1223
1224   Controller->V1.NewEnquiry = slice_dma_loaf(DmaPages,
1225                 sizeof(DAC960_V1_Enquiry_T),
1226                 &Controller->V1.NewEnquiryDMA);
1227
1228   Controller->V1.NewErrorTable = slice_dma_loaf(DmaPages,
1229                 sizeof(DAC960_V1_ErrorTable_T),
1230                 &Controller->V1.NewErrorTableDMA);
1231
1232   Controller->V1.EventLogEntry = slice_dma_loaf(DmaPages,
1233                 sizeof(DAC960_V1_EventLogEntry_T),
1234                 &Controller->V1.EventLogEntryDMA);
1235
1236   Controller->V1.RebuildProgress = slice_dma_loaf(DmaPages,
1237                 sizeof(DAC960_V1_RebuildProgress_T),
1238                 &Controller->V1.RebuildProgressDMA);
1239
1240   Controller->V1.NewLogicalDriveInformation = slice_dma_loaf(DmaPages,
1241                 sizeof(DAC960_V1_LogicalDriveInformationArray_T),
1242                 &Controller->V1.NewLogicalDriveInformationDMA);
1243
1244   Controller->V1.BackgroundInitializationStatus = slice_dma_loaf(DmaPages,
1245                 sizeof(DAC960_V1_BackgroundInitializationStatus_T),
1246                 &Controller->V1.BackgroundInitializationStatusDMA);
1247
1248   Controller->V1.NewDeviceState = slice_dma_loaf(DmaPages,
1249                 sizeof(DAC960_V1_DeviceState_T),
1250                 &Controller->V1.NewDeviceStateDMA);
1251
1252   Controller->V1.NewInquiryStandardData = slice_dma_loaf(DmaPages,
1253                 sizeof(DAC960_SCSI_Inquiry_T),
1254                 &Controller->V1.NewInquiryStandardDataDMA);
1255
1256   Controller->V1.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1257                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1258                 &Controller->V1.NewInquiryUnitSerialNumberDMA);
1259
1260   if ((hw_type == DAC960_PD_Controller) || (hw_type == DAC960_P_Controller))
1261         return true;
1262
1263   /* Enable the Memory Mailbox Interface. */
1264   Controller->V1.DualModeMemoryMailboxInterface = true;
1265   CommandMailbox.TypeX.CommandOpcode = 0x2B;
1266   CommandMailbox.TypeX.CommandIdentifier = 0;
1267   CommandMailbox.TypeX.CommandOpcode2 = 0x14;
1268   CommandMailbox.TypeX.CommandMailboxesBusAddress =
1269                                 Controller->V1.FirstCommandMailboxDMA;
1270   CommandMailbox.TypeX.StatusMailboxesBusAddress =
1271                                 Controller->V1.FirstStatusMailboxDMA;
1272 #define TIMEOUT_COUNT 1000000
1273
1274   for (i = 0; i < 2; i++)
1275     switch (Controller->HardwareType)
1276       {
1277       case DAC960_LA_Controller:
1278         TimeoutCounter = TIMEOUT_COUNT;
1279         while (--TimeoutCounter >= 0)
1280           {
1281             if (!DAC960_LA_HardwareMailboxFullP(ControllerBaseAddress))
1282               break;
1283             udelay(10);
1284           }
1285         if (TimeoutCounter < 0) return false;
1286         DAC960_LA_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1287         DAC960_LA_HardwareMailboxNewCommand(ControllerBaseAddress);
1288         TimeoutCounter = TIMEOUT_COUNT;
1289         while (--TimeoutCounter >= 0)
1290           {
1291             if (DAC960_LA_HardwareMailboxStatusAvailableP(
1292                   ControllerBaseAddress))
1293               break;
1294             udelay(10);
1295           }
1296         if (TimeoutCounter < 0) return false;
1297         CommandStatus = DAC960_LA_ReadStatusRegister(ControllerBaseAddress);
1298         DAC960_LA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1299         DAC960_LA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1300         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1301         Controller->V1.DualModeMemoryMailboxInterface = false;
1302         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1303         break;
1304       case DAC960_PG_Controller:
1305         TimeoutCounter = TIMEOUT_COUNT;
1306         while (--TimeoutCounter >= 0)
1307           {
1308             if (!DAC960_PG_HardwareMailboxFullP(ControllerBaseAddress))
1309               break;
1310             udelay(10);
1311           }
1312         if (TimeoutCounter < 0) return false;
1313         DAC960_PG_WriteHardwareMailbox(ControllerBaseAddress, &CommandMailbox);
1314         DAC960_PG_HardwareMailboxNewCommand(ControllerBaseAddress);
1315
1316         TimeoutCounter = TIMEOUT_COUNT;
1317         while (--TimeoutCounter >= 0)
1318           {
1319             if (DAC960_PG_HardwareMailboxStatusAvailableP(
1320                   ControllerBaseAddress))
1321               break;
1322             udelay(10);
1323           }
1324         if (TimeoutCounter < 0) return false;
1325         CommandStatus = DAC960_PG_ReadStatusRegister(ControllerBaseAddress);
1326         DAC960_PG_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1327         DAC960_PG_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1328         if (CommandStatus == DAC960_V1_NormalCompletion) return true;
1329         Controller->V1.DualModeMemoryMailboxInterface = false;
1330         CommandMailbox.TypeX.CommandOpcode2 = 0x10;
1331         break;
1332       default:
1333         DAC960_Failure(Controller, "Unknown Controller Type\n");
1334         break;
1335       }
1336   return false;
1337 }
1338
1339
1340 /*
1341   DAC960_V2_EnableMemoryMailboxInterface enables the Memory Mailbox Interface
1342   for DAC960 V2 Firmware Controllers.
1343
1344   Aggregate the space needed for the controller's memory mailbox and
1345   the other data structures that will be targets of dma transfers with
1346   the controller.  Allocate a dma-mapped region of memory to hold these
1347   structures.  Then, save CPU pointers and dma_addr_t values to reference
1348   the structures that are contained in that region.
1349 */
1350
1351 static boolean DAC960_V2_EnableMemoryMailboxInterface(DAC960_Controller_T
1352                                                       *Controller)
1353 {
1354   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
1355   struct pci_dev *PCI_Device = Controller->PCIDevice;
1356   struct dma_loaf *DmaPages = &Controller->DmaPages;
1357   size_t DmaPagesSize;
1358   size_t CommandMailboxesSize;
1359   size_t StatusMailboxesSize;
1360
1361   DAC960_V2_CommandMailbox_T *CommandMailboxesMemory;
1362   dma_addr_t CommandMailboxesMemoryDMA;
1363
1364   DAC960_V2_StatusMailbox_T *StatusMailboxesMemory;
1365   dma_addr_t StatusMailboxesMemoryDMA;
1366
1367   DAC960_V2_CommandMailbox_T *CommandMailbox;
1368   dma_addr_t    CommandMailboxDMA;
1369   DAC960_V2_CommandStatus_T CommandStatus;
1370
1371   if (pci_set_dma_mask(Controller->PCIDevice, DAC690_V2_PciDmaMask))
1372         return DAC960_Failure(Controller, "DMA mask out of range");
1373   Controller->BounceBufferLimit = DAC690_V2_PciDmaMask;
1374
1375   /* This is a temporary dma mapping, used only in the scope of this function */
1376   CommandMailbox =
1377           (DAC960_V2_CommandMailbox_T *)pci_alloc_consistent( PCI_Device,
1378                 sizeof(DAC960_V2_CommandMailbox_T), &CommandMailboxDMA);
1379   if (CommandMailbox == NULL)
1380           return false;
1381
1382   CommandMailboxesSize = DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T);
1383   StatusMailboxesSize = DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T);
1384   DmaPagesSize =
1385     CommandMailboxesSize + StatusMailboxesSize +
1386     sizeof(DAC960_V2_HealthStatusBuffer_T) +
1387     sizeof(DAC960_V2_ControllerInfo_T) +
1388     sizeof(DAC960_V2_LogicalDeviceInfo_T) +
1389     sizeof(DAC960_V2_PhysicalDeviceInfo_T) +
1390     sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T) +
1391     sizeof(DAC960_V2_Event_T) +
1392     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
1393
1394   if (!init_dma_loaf(PCI_Device, DmaPages, DmaPagesSize)) {
1395         pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1396                                         CommandMailbox, CommandMailboxDMA);
1397         return false;
1398   }
1399
1400   CommandMailboxesMemory = slice_dma_loaf(DmaPages,
1401                 CommandMailboxesSize, &CommandMailboxesMemoryDMA);
1402
1403   /* These are the base addresses for the command memory mailbox array */
1404   Controller->V2.FirstCommandMailbox = CommandMailboxesMemory;
1405   Controller->V2.FirstCommandMailboxDMA = CommandMailboxesMemoryDMA;
1406
1407   CommandMailboxesMemory += DAC960_V2_CommandMailboxCount - 1;
1408   Controller->V2.LastCommandMailbox = CommandMailboxesMemory;
1409   Controller->V2.NextCommandMailbox = Controller->V2.FirstCommandMailbox;
1410   Controller->V2.PreviousCommandMailbox1 = Controller->V2.LastCommandMailbox;
1411   Controller->V2.PreviousCommandMailbox2 =
1412                                         Controller->V2.LastCommandMailbox - 1;
1413
1414   /* These are the base addresses for the status memory mailbox array */
1415   StatusMailboxesMemory = slice_dma_loaf(DmaPages,
1416                 StatusMailboxesSize, &StatusMailboxesMemoryDMA);
1417
1418   Controller->V2.FirstStatusMailbox = StatusMailboxesMemory;
1419   Controller->V2.FirstStatusMailboxDMA = StatusMailboxesMemoryDMA;
1420   StatusMailboxesMemory += DAC960_V2_StatusMailboxCount - 1;
1421   Controller->V2.LastStatusMailbox = StatusMailboxesMemory;
1422   Controller->V2.NextStatusMailbox = Controller->V2.FirstStatusMailbox;
1423
1424   Controller->V2.HealthStatusBuffer = slice_dma_loaf(DmaPages,
1425                 sizeof(DAC960_V2_HealthStatusBuffer_T),
1426                 &Controller->V2.HealthStatusBufferDMA);
1427
1428   Controller->V2.NewControllerInformation = slice_dma_loaf(DmaPages,
1429                 sizeof(DAC960_V2_ControllerInfo_T),
1430                 &Controller->V2.NewControllerInformationDMA);
1431
1432   Controller->V2.NewLogicalDeviceInformation =  slice_dma_loaf(DmaPages,
1433                 sizeof(DAC960_V2_LogicalDeviceInfo_T),
1434                 &Controller->V2.NewLogicalDeviceInformationDMA);
1435
1436   Controller->V2.NewPhysicalDeviceInformation = slice_dma_loaf(DmaPages,
1437                 sizeof(DAC960_V2_PhysicalDeviceInfo_T),
1438                 &Controller->V2.NewPhysicalDeviceInformationDMA);
1439
1440   Controller->V2.NewInquiryUnitSerialNumber = slice_dma_loaf(DmaPages,
1441                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1442                 &Controller->V2.NewInquiryUnitSerialNumberDMA);
1443
1444   Controller->V2.Event = slice_dma_loaf(DmaPages,
1445                 sizeof(DAC960_V2_Event_T),
1446                 &Controller->V2.EventDMA);
1447
1448   Controller->V2.PhysicalToLogicalDevice = slice_dma_loaf(DmaPages,
1449                 sizeof(DAC960_V2_PhysicalToLogicalDevice_T),
1450                 &Controller->V2.PhysicalToLogicalDeviceDMA);
1451
1452   /*
1453     Enable the Memory Mailbox Interface.
1454
1455     I don't know why we can't just use one of the memory mailboxes
1456     we just allocated to do this, instead of using this temporary one.
1457     Try this change later.
1458   */
1459   memset(CommandMailbox, 0, sizeof(DAC960_V2_CommandMailbox_T));
1460   CommandMailbox->SetMemoryMailbox.CommandIdentifier = 1;
1461   CommandMailbox->SetMemoryMailbox.CommandOpcode = DAC960_V2_IOCTL;
1462   CommandMailbox->SetMemoryMailbox.CommandControlBits.NoAutoRequestSense = true;
1463   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxSizeKB =
1464     (DAC960_V2_CommandMailboxCount * sizeof(DAC960_V2_CommandMailbox_T)) >> 10;
1465   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxSizeKB =
1466     (DAC960_V2_StatusMailboxCount * sizeof(DAC960_V2_StatusMailbox_T)) >> 10;
1467   CommandMailbox->SetMemoryMailbox.SecondCommandMailboxSizeKB = 0;
1468   CommandMailbox->SetMemoryMailbox.SecondStatusMailboxSizeKB = 0;
1469   CommandMailbox->SetMemoryMailbox.RequestSenseSize = 0;
1470   CommandMailbox->SetMemoryMailbox.IOCTL_Opcode = DAC960_V2_SetMemoryMailbox;
1471   CommandMailbox->SetMemoryMailbox.HealthStatusBufferSizeKB = 1;
1472   CommandMailbox->SetMemoryMailbox.HealthStatusBufferBusAddress =
1473                                         Controller->V2.HealthStatusBufferDMA;
1474   CommandMailbox->SetMemoryMailbox.FirstCommandMailboxBusAddress =
1475                                         Controller->V2.FirstCommandMailboxDMA;
1476   CommandMailbox->SetMemoryMailbox.FirstStatusMailboxBusAddress =
1477                                         Controller->V2.FirstStatusMailboxDMA;
1478   switch (Controller->HardwareType)
1479     {
1480     case DAC960_GEM_Controller:
1481       while (DAC960_GEM_HardwareMailboxFullP(ControllerBaseAddress))
1482         udelay(1);
1483       DAC960_GEM_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1484       DAC960_GEM_HardwareMailboxNewCommand(ControllerBaseAddress);
1485       while (!DAC960_GEM_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1486         udelay(1);
1487       CommandStatus = DAC960_GEM_ReadCommandStatus(ControllerBaseAddress);
1488       DAC960_GEM_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1489       DAC960_GEM_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1490       break;
1491     case DAC960_BA_Controller:
1492       while (DAC960_BA_HardwareMailboxFullP(ControllerBaseAddress))
1493         udelay(1);
1494       DAC960_BA_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1495       DAC960_BA_HardwareMailboxNewCommand(ControllerBaseAddress);
1496       while (!DAC960_BA_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1497         udelay(1);
1498       CommandStatus = DAC960_BA_ReadCommandStatus(ControllerBaseAddress);
1499       DAC960_BA_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1500       DAC960_BA_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1501       break;
1502     case DAC960_LP_Controller:
1503       while (DAC960_LP_HardwareMailboxFullP(ControllerBaseAddress))
1504         udelay(1);
1505       DAC960_LP_WriteHardwareMailbox(ControllerBaseAddress, CommandMailboxDMA);
1506       DAC960_LP_HardwareMailboxNewCommand(ControllerBaseAddress);
1507       while (!DAC960_LP_HardwareMailboxStatusAvailableP(ControllerBaseAddress))
1508         udelay(1);
1509       CommandStatus = DAC960_LP_ReadCommandStatus(ControllerBaseAddress);
1510       DAC960_LP_AcknowledgeHardwareMailboxInterrupt(ControllerBaseAddress);
1511       DAC960_LP_AcknowledgeHardwareMailboxStatus(ControllerBaseAddress);
1512       break;
1513     default:
1514       DAC960_Failure(Controller, "Unknown Controller Type\n");
1515       CommandStatus = DAC960_V2_AbormalCompletion;
1516       break;
1517     }
1518   pci_free_consistent(PCI_Device, sizeof(DAC960_V2_CommandMailbox_T),
1519                                         CommandMailbox, CommandMailboxDMA);
1520   return (CommandStatus == DAC960_V2_NormalCompletion);
1521 }
1522
1523
1524 /*
1525   DAC960_V1_ReadControllerConfiguration reads the Configuration Information
1526   from DAC960 V1 Firmware Controllers and initializes the Controller structure.
1527 */
1528
1529 static boolean DAC960_V1_ReadControllerConfiguration(DAC960_Controller_T
1530                                                      *Controller)
1531 {
1532   DAC960_V1_Enquiry2_T *Enquiry2;
1533   dma_addr_t Enquiry2DMA;
1534   DAC960_V1_Config2_T *Config2;
1535   dma_addr_t Config2DMA;
1536   int LogicalDriveNumber, Channel, TargetID;
1537   struct dma_loaf local_dma;
1538
1539   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1540                 sizeof(DAC960_V1_Enquiry2_T) + sizeof(DAC960_V1_Config2_T)))
1541         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1542
1543   Enquiry2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Enquiry2_T), &Enquiry2DMA);
1544   Config2 = slice_dma_loaf(&local_dma, sizeof(DAC960_V1_Config2_T), &Config2DMA);
1545
1546   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry,
1547                               Controller->V1.NewEnquiryDMA)) {
1548     free_dma_loaf(Controller->PCIDevice, &local_dma);
1549     return DAC960_Failure(Controller, "ENQUIRY");
1550   }
1551   memcpy(&Controller->V1.Enquiry, Controller->V1.NewEnquiry,
1552                                                 sizeof(DAC960_V1_Enquiry_T));
1553
1554   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_Enquiry2, Enquiry2DMA)) {
1555     free_dma_loaf(Controller->PCIDevice, &local_dma);
1556     return DAC960_Failure(Controller, "ENQUIRY2");
1557   }
1558
1559   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_ReadConfig2, Config2DMA)) {
1560     free_dma_loaf(Controller->PCIDevice, &local_dma);
1561     return DAC960_Failure(Controller, "READ CONFIG2");
1562   }
1563
1564   if (!DAC960_V1_ExecuteType3(Controller, DAC960_V1_GetLogicalDriveInformation,
1565                               Controller->V1.NewLogicalDriveInformationDMA)) {
1566     free_dma_loaf(Controller->PCIDevice, &local_dma);
1567     return DAC960_Failure(Controller, "GET LOGICAL DRIVE INFORMATION");
1568   }
1569   memcpy(&Controller->V1.LogicalDriveInformation,
1570                 Controller->V1.NewLogicalDriveInformation,
1571                 sizeof(DAC960_V1_LogicalDriveInformationArray_T));
1572
1573   for (Channel = 0; Channel < Enquiry2->ActualChannels; Channel++)
1574     for (TargetID = 0; TargetID < Enquiry2->MaxTargets; TargetID++) {
1575       if (!DAC960_V1_ExecuteType3D(Controller, DAC960_V1_GetDeviceState,
1576                                    Channel, TargetID,
1577                                    Controller->V1.NewDeviceStateDMA)) {
1578                 free_dma_loaf(Controller->PCIDevice, &local_dma);
1579                 return DAC960_Failure(Controller, "GET DEVICE STATE");
1580         }
1581         memcpy(&Controller->V1.DeviceState[Channel][TargetID],
1582                 Controller->V1.NewDeviceState, sizeof(DAC960_V1_DeviceState_T));
1583      }
1584   /*
1585     Initialize the Controller Model Name and Full Model Name fields.
1586   */
1587   switch (Enquiry2->HardwareID.SubModel)
1588     {
1589     case DAC960_V1_P_PD_PU:
1590       if (Enquiry2->SCSICapability.BusSpeed == DAC960_V1_Ultra)
1591         strcpy(Controller->ModelName, "DAC960PU");
1592       else strcpy(Controller->ModelName, "DAC960PD");
1593       break;
1594     case DAC960_V1_PL:
1595       strcpy(Controller->ModelName, "DAC960PL");
1596       break;
1597     case DAC960_V1_PG:
1598       strcpy(Controller->ModelName, "DAC960PG");
1599       break;
1600     case DAC960_V1_PJ:
1601       strcpy(Controller->ModelName, "DAC960PJ");
1602       break;
1603     case DAC960_V1_PR:
1604       strcpy(Controller->ModelName, "DAC960PR");
1605       break;
1606     case DAC960_V1_PT:
1607       strcpy(Controller->ModelName, "DAC960PT");
1608       break;
1609     case DAC960_V1_PTL0:
1610       strcpy(Controller->ModelName, "DAC960PTL0");
1611       break;
1612     case DAC960_V1_PRL:
1613       strcpy(Controller->ModelName, "DAC960PRL");
1614       break;
1615     case DAC960_V1_PTL1:
1616       strcpy(Controller->ModelName, "DAC960PTL1");
1617       break;
1618     case DAC960_V1_1164P:
1619       strcpy(Controller->ModelName, "DAC1164P");
1620       break;
1621     default:
1622       free_dma_loaf(Controller->PCIDevice, &local_dma);
1623       return DAC960_Failure(Controller, "MODEL VERIFICATION");
1624     }
1625   strcpy(Controller->FullModelName, "Mylex ");
1626   strcat(Controller->FullModelName, Controller->ModelName);
1627   /*
1628     Initialize the Controller Firmware Version field and verify that it
1629     is a supported firmware version.  The supported firmware versions are:
1630
1631     DAC1164P                5.06 and above
1632     DAC960PTL/PRL/PJ/PG     4.06 and above
1633     DAC960PU/PD/PL          3.51 and above
1634     DAC960PU/PD/PL/P        2.73 and above
1635   */
1636 #if defined(CONFIG_ALPHA)
1637   /*
1638     DEC Alpha machines were often equipped with DAC960 cards that were
1639     OEMed from Mylex, and had their own custom firmware. Version 2.70,
1640     the last custom FW revision to be released by DEC for these older
1641     controllers, appears to work quite well with this driver.
1642
1643     Cards tested successfully were several versions each of the PD and
1644     PU, called by DEC the KZPSC and KZPAC, respectively, and having
1645     the Manufacturer Numbers (from Mylex), usually on a sticker on the
1646     back of the board, of:
1647
1648     KZPSC:  D040347 (1-channel) or D040348 (2-channel) or D040349 (3-channel)
1649     KZPAC:  D040395 (1-channel) or D040396 (2-channel) or D040397 (3-channel)
1650   */
1651 # define FIRMWARE_27X   "2.70"
1652 #else
1653 # define FIRMWARE_27X   "2.73"
1654 #endif
1655
1656   if (Enquiry2->FirmwareID.MajorVersion == 0)
1657     {
1658       Enquiry2->FirmwareID.MajorVersion =
1659         Controller->V1.Enquiry.MajorFirmwareVersion;
1660       Enquiry2->FirmwareID.MinorVersion =
1661         Controller->V1.Enquiry.MinorFirmwareVersion;
1662       Enquiry2->FirmwareID.FirmwareType = '0';
1663       Enquiry2->FirmwareID.TurnID = 0;
1664     }
1665   sprintf(Controller->FirmwareVersion, "%d.%02d-%c-%02d",
1666           Enquiry2->FirmwareID.MajorVersion, Enquiry2->FirmwareID.MinorVersion,
1667           Enquiry2->FirmwareID.FirmwareType, Enquiry2->FirmwareID.TurnID);
1668   if (!((Controller->FirmwareVersion[0] == '5' &&
1669          strcmp(Controller->FirmwareVersion, "5.06") >= 0) ||
1670         (Controller->FirmwareVersion[0] == '4' &&
1671          strcmp(Controller->FirmwareVersion, "4.06") >= 0) ||
1672         (Controller->FirmwareVersion[0] == '3' &&
1673          strcmp(Controller->FirmwareVersion, "3.51") >= 0) ||
1674         (Controller->FirmwareVersion[0] == '2' &&
1675          strcmp(Controller->FirmwareVersion, FIRMWARE_27X) >= 0)))
1676     {
1677       DAC960_Failure(Controller, "FIRMWARE VERSION VERIFICATION");
1678       DAC960_Error("Firmware Version = '%s'\n", Controller,
1679                    Controller->FirmwareVersion);
1680       free_dma_loaf(Controller->PCIDevice, &local_dma);
1681       return false;
1682     }
1683   /*
1684     Initialize the Controller Channels, Targets, Memory Size, and SAF-TE
1685     Enclosure Management Enabled fields.
1686   */
1687   Controller->Channels = Enquiry2->ActualChannels;
1688   Controller->Targets = Enquiry2->MaxTargets;
1689   Controller->MemorySize = Enquiry2->MemorySize >> 20;
1690   Controller->V1.SAFTE_EnclosureManagementEnabled =
1691     (Enquiry2->FaultManagementType == DAC960_V1_SAFTE);
1692   /*
1693     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1694     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1695     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1696     less than the Controller Queue Depth to allow for an automatic drive
1697     rebuild operation.
1698   */
1699   Controller->ControllerQueueDepth = Controller->V1.Enquiry.MaxCommands;
1700   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1701   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1702     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1703   Controller->LogicalDriveCount =
1704     Controller->V1.Enquiry.NumberOfLogicalDrives;
1705   Controller->MaxBlocksPerCommand = Enquiry2->MaxBlocksPerCommand;
1706   Controller->ControllerScatterGatherLimit = Enquiry2->MaxScatterGatherEntries;
1707   Controller->DriverScatterGatherLimit =
1708     Controller->ControllerScatterGatherLimit;
1709   if (Controller->DriverScatterGatherLimit > DAC960_V1_ScatterGatherLimit)
1710     Controller->DriverScatterGatherLimit = DAC960_V1_ScatterGatherLimit;
1711   /*
1712     Initialize the Stripe Size, Segment Size, and Geometry Translation.
1713   */
1714   Controller->V1.StripeSize = Config2->BlocksPerStripe * Config2->BlockFactor
1715                               >> (10 - DAC960_BlockSizeBits);
1716   Controller->V1.SegmentSize = Config2->BlocksPerCacheLine * Config2->BlockFactor
1717                                >> (10 - DAC960_BlockSizeBits);
1718   switch (Config2->DriveGeometry)
1719     {
1720     case DAC960_V1_Geometry_128_32:
1721       Controller->V1.GeometryTranslationHeads = 128;
1722       Controller->V1.GeometryTranslationSectors = 32;
1723       break;
1724     case DAC960_V1_Geometry_255_63:
1725       Controller->V1.GeometryTranslationHeads = 255;
1726       Controller->V1.GeometryTranslationSectors = 63;
1727       break;
1728     default:
1729       free_dma_loaf(Controller->PCIDevice, &local_dma);
1730       return DAC960_Failure(Controller, "CONFIG2 DRIVE GEOMETRY");
1731     }
1732   /*
1733     Initialize the Background Initialization Status.
1734   */
1735   if ((Controller->FirmwareVersion[0] == '4' &&
1736       strcmp(Controller->FirmwareVersion, "4.08") >= 0) ||
1737       (Controller->FirmwareVersion[0] == '5' &&
1738        strcmp(Controller->FirmwareVersion, "5.08") >= 0))
1739     {
1740       Controller->V1.BackgroundInitializationStatusSupported = true;
1741       DAC960_V1_ExecuteType3B(Controller,
1742                               DAC960_V1_BackgroundInitializationControl, 0x20,
1743                               Controller->
1744                                V1.BackgroundInitializationStatusDMA);
1745       memcpy(&Controller->V1.LastBackgroundInitializationStatus,
1746                 Controller->V1.BackgroundInitializationStatus,
1747                 sizeof(DAC960_V1_BackgroundInitializationStatus_T));
1748     }
1749   /*
1750     Initialize the Logical Drive Initially Accessible flag.
1751   */
1752   for (LogicalDriveNumber = 0;
1753        LogicalDriveNumber < Controller->LogicalDriveCount;
1754        LogicalDriveNumber++)
1755     if (Controller->V1.LogicalDriveInformation
1756                        [LogicalDriveNumber].LogicalDriveState !=
1757         DAC960_V1_LogicalDrive_Offline)
1758       Controller->LogicalDriveInitiallyAccessible[LogicalDriveNumber] = true;
1759   Controller->V1.LastRebuildStatus = DAC960_V1_NoRebuildOrCheckInProgress;
1760   free_dma_loaf(Controller->PCIDevice, &local_dma);
1761   return true;
1762 }
1763
1764
1765 /*
1766   DAC960_V2_ReadControllerConfiguration reads the Configuration Information
1767   from DAC960 V2 Firmware Controllers and initializes the Controller structure.
1768 */
1769
1770 static boolean DAC960_V2_ReadControllerConfiguration(DAC960_Controller_T
1771                                                      *Controller)
1772 {
1773   DAC960_V2_ControllerInfo_T *ControllerInfo =
1774                 &Controller->V2.ControllerInformation;
1775   unsigned short LogicalDeviceNumber = 0;
1776   int ModelNameLength;
1777
1778   /* Get data into dma-able area, then copy into permanant location */
1779   if (!DAC960_V2_NewControllerInfo(Controller))
1780     return DAC960_Failure(Controller, "GET CONTROLLER INFO");
1781   memcpy(ControllerInfo, Controller->V2.NewControllerInformation,
1782                         sizeof(DAC960_V2_ControllerInfo_T));
1783
1784
1785   if (!DAC960_V2_GeneralInfo(Controller))
1786     return DAC960_Failure(Controller, "GET HEALTH STATUS");
1787
1788   /*
1789     Initialize the Controller Model Name and Full Model Name fields.
1790   */
1791   ModelNameLength = sizeof(ControllerInfo->ControllerName);
1792   if (ModelNameLength > sizeof(Controller->ModelName)-1)
1793     ModelNameLength = sizeof(Controller->ModelName)-1;
1794   memcpy(Controller->ModelName, ControllerInfo->ControllerName,
1795          ModelNameLength);
1796   ModelNameLength--;
1797   while (Controller->ModelName[ModelNameLength] == ' ' ||
1798          Controller->ModelName[ModelNameLength] == '\0')
1799     ModelNameLength--;
1800   Controller->ModelName[++ModelNameLength] = '\0';
1801   strcpy(Controller->FullModelName, "Mylex ");
1802   strcat(Controller->FullModelName, Controller->ModelName);
1803   /*
1804     Initialize the Controller Firmware Version field.
1805   */
1806   sprintf(Controller->FirmwareVersion, "%d.%02d-%02d",
1807           ControllerInfo->FirmwareMajorVersion,
1808           ControllerInfo->FirmwareMinorVersion,
1809           ControllerInfo->FirmwareTurnNumber);
1810   if (ControllerInfo->FirmwareMajorVersion == 6 &&
1811       ControllerInfo->FirmwareMinorVersion == 0 &&
1812       ControllerInfo->FirmwareTurnNumber < 1)
1813     {
1814       DAC960_Info("FIRMWARE VERSION %s DOES NOT PROVIDE THE CONTROLLER\n",
1815                   Controller, Controller->FirmwareVersion);
1816       DAC960_Info("STATUS MONITORING FUNCTIONALITY NEEDED BY THIS DRIVER.\n",
1817                   Controller);
1818       DAC960_Info("PLEASE UPGRADE TO VERSION 6.00-01 OR ABOVE.\n",
1819                   Controller);
1820     }
1821   /*
1822     Initialize the Controller Channels, Targets, and Memory Size.
1823   */
1824   Controller->Channels = ControllerInfo->NumberOfPhysicalChannelsPresent;
1825   Controller->Targets =
1826     ControllerInfo->MaximumTargetsPerChannel
1827                     [ControllerInfo->NumberOfPhysicalChannelsPresent-1];
1828   Controller->MemorySize = ControllerInfo->MemorySizeMB;
1829   /*
1830     Initialize the Controller Queue Depth, Driver Queue Depth, Logical Drive
1831     Count, Maximum Blocks per Command, Controller Scatter/Gather Limit, and
1832     Driver Scatter/Gather Limit.  The Driver Queue Depth must be at most one
1833     less than the Controller Queue Depth to allow for an automatic drive
1834     rebuild operation.
1835   */
1836   Controller->ControllerQueueDepth = ControllerInfo->MaximumParallelCommands;
1837   Controller->DriverQueueDepth = Controller->ControllerQueueDepth - 1;
1838   if (Controller->DriverQueueDepth > DAC960_MaxDriverQueueDepth)
1839     Controller->DriverQueueDepth = DAC960_MaxDriverQueueDepth;
1840   Controller->LogicalDriveCount = ControllerInfo->LogicalDevicesPresent;
1841   Controller->MaxBlocksPerCommand =
1842     ControllerInfo->MaximumDataTransferSizeInBlocks;
1843   Controller->ControllerScatterGatherLimit =
1844     ControllerInfo->MaximumScatterGatherEntries;
1845   Controller->DriverScatterGatherLimit =
1846     Controller->ControllerScatterGatherLimit;
1847   if (Controller->DriverScatterGatherLimit > DAC960_V2_ScatterGatherLimit)
1848     Controller->DriverScatterGatherLimit = DAC960_V2_ScatterGatherLimit;
1849   /*
1850     Initialize the Logical Device Information.
1851   */
1852   while (true)
1853     {
1854       DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
1855         Controller->V2.NewLogicalDeviceInformation;
1856       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo;
1857       DAC960_V2_PhysicalDevice_T PhysicalDevice;
1858
1859       if (!DAC960_V2_NewLogicalDeviceInfo(Controller, LogicalDeviceNumber))
1860         break;
1861       LogicalDeviceNumber = NewLogicalDeviceInfo->LogicalDeviceNumber;
1862       if (LogicalDeviceNumber >= DAC960_MaxLogicalDrives) {
1863         DAC960_Error("DAC960: Logical Drive Number %d not supported\n",
1864                        Controller, LogicalDeviceNumber);
1865                 break;
1866       }
1867       if (NewLogicalDeviceInfo->DeviceBlockSizeInBytes != DAC960_BlockSize) {
1868         DAC960_Error("DAC960: Logical Drive Block Size %d not supported\n",
1869               Controller, NewLogicalDeviceInfo->DeviceBlockSizeInBytes);
1870         LogicalDeviceNumber++;
1871         continue;
1872       }
1873       PhysicalDevice.Controller = 0;
1874       PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
1875       PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
1876       PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
1877       Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
1878         PhysicalDevice;
1879       if (NewLogicalDeviceInfo->LogicalDeviceState !=
1880           DAC960_V2_LogicalDevice_Offline)
1881         Controller->LogicalDriveInitiallyAccessible[LogicalDeviceNumber] = true;
1882       LogicalDeviceInfo = (DAC960_V2_LogicalDeviceInfo_T *)
1883         kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T), GFP_ATOMIC);
1884       if (LogicalDeviceInfo == NULL)
1885         return DAC960_Failure(Controller, "LOGICAL DEVICE ALLOCATION");
1886       Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
1887         LogicalDeviceInfo;
1888       memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
1889              sizeof(DAC960_V2_LogicalDeviceInfo_T));
1890       LogicalDeviceNumber++;
1891     }
1892   return true;
1893 }
1894
1895
1896 /*
1897   DAC960_ReportControllerConfiguration reports the Configuration Information
1898   for Controller.
1899 */
1900
1901 static boolean DAC960_ReportControllerConfiguration(DAC960_Controller_T
1902                                                     *Controller)
1903 {
1904   DAC960_Info("Configuring Mylex %s PCI RAID Controller\n",
1905               Controller, Controller->ModelName);
1906   DAC960_Info("  Firmware Version: %s, Channels: %d, Memory Size: %dMB\n",
1907               Controller, Controller->FirmwareVersion,
1908               Controller->Channels, Controller->MemorySize);
1909   DAC960_Info("  PCI Bus: %d, Device: %d, Function: %d, I/O Address: ",
1910               Controller, Controller->Bus,
1911               Controller->Device, Controller->Function);
1912   if (Controller->IO_Address == 0)
1913     DAC960_Info("Unassigned\n", Controller);
1914   else DAC960_Info("0x%X\n", Controller, Controller->IO_Address);
1915   DAC960_Info("  PCI Address: 0x%X mapped at 0x%lX, IRQ Channel: %d\n",
1916               Controller, Controller->PCI_Address,
1917               (unsigned long) Controller->BaseAddress,
1918               Controller->IRQ_Channel);
1919   DAC960_Info("  Controller Queue Depth: %d, "
1920               "Maximum Blocks per Command: %d\n",
1921               Controller, Controller->ControllerQueueDepth,
1922               Controller->MaxBlocksPerCommand);
1923   DAC960_Info("  Driver Queue Depth: %d, "
1924               "Scatter/Gather Limit: %d of %d Segments\n",
1925               Controller, Controller->DriverQueueDepth,
1926               Controller->DriverScatterGatherLimit,
1927               Controller->ControllerScatterGatherLimit);
1928   if (Controller->FirmwareType == DAC960_V1_Controller)
1929     {
1930       DAC960_Info("  Stripe Size: %dKB, Segment Size: %dKB, "
1931                   "BIOS Geometry: %d/%d\n", Controller,
1932                   Controller->V1.StripeSize,
1933                   Controller->V1.SegmentSize,
1934                   Controller->V1.GeometryTranslationHeads,
1935                   Controller->V1.GeometryTranslationSectors);
1936       if (Controller->V1.SAFTE_EnclosureManagementEnabled)
1937         DAC960_Info("  SAF-TE Enclosure Management Enabled\n", Controller);
1938     }
1939   return true;
1940 }
1941
1942
1943 /*
1944   DAC960_V1_ReadDeviceConfiguration reads the Device Configuration Information
1945   for DAC960 V1 Firmware Controllers by requesting the SCSI Inquiry and SCSI
1946   Inquiry Unit Serial Number information for each device connected to
1947   Controller.
1948 */
1949
1950 static boolean DAC960_V1_ReadDeviceConfiguration(DAC960_Controller_T
1951                                                  *Controller)
1952 {
1953   struct dma_loaf local_dma;
1954
1955   dma_addr_t DCDBs_dma[DAC960_V1_MaxChannels];
1956   DAC960_V1_DCDB_T *DCDBs_cpu[DAC960_V1_MaxChannels];
1957
1958   dma_addr_t SCSI_Inquiry_dma[DAC960_V1_MaxChannels];
1959   DAC960_SCSI_Inquiry_T *SCSI_Inquiry_cpu[DAC960_V1_MaxChannels];
1960
1961   dma_addr_t SCSI_NewInquiryUnitSerialNumberDMA[DAC960_V1_MaxChannels];
1962   DAC960_SCSI_Inquiry_UnitSerialNumber_T *SCSI_NewInquiryUnitSerialNumberCPU[DAC960_V1_MaxChannels];
1963
1964   struct completion Completions[DAC960_V1_MaxChannels];
1965   unsigned long flags;
1966   int Channel, TargetID;
1967
1968   if (!init_dma_loaf(Controller->PCIDevice, &local_dma,
1969                 DAC960_V1_MaxChannels*(sizeof(DAC960_V1_DCDB_T) +
1970                         sizeof(DAC960_SCSI_Inquiry_T) +
1971                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T))))
1972      return DAC960_Failure(Controller,
1973                         "DMA ALLOCATION FAILED IN ReadDeviceConfiguration");
1974
1975   for (Channel = 0; Channel < Controller->Channels; Channel++) {
1976         DCDBs_cpu[Channel] = slice_dma_loaf(&local_dma,
1977                         sizeof(DAC960_V1_DCDB_T), DCDBs_dma + Channel);
1978         SCSI_Inquiry_cpu[Channel] = slice_dma_loaf(&local_dma,
1979                         sizeof(DAC960_SCSI_Inquiry_T),
1980                         SCSI_Inquiry_dma + Channel);
1981         SCSI_NewInquiryUnitSerialNumberCPU[Channel] = slice_dma_loaf(&local_dma,
1982                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
1983                         SCSI_NewInquiryUnitSerialNumberDMA + Channel);
1984   }
1985
1986   for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
1987     {
1988       /*
1989        * For each channel, submit a probe for a device on that channel.
1990        * The timeout interval for a device that is present is 10 seconds.
1991        * With this approach, the timeout periods can elapse in parallel
1992        * on each channel.
1993        */
1994       for (Channel = 0; Channel < Controller->Channels; Channel++)
1995         {
1996           dma_addr_t NewInquiryStandardDataDMA = SCSI_Inquiry_dma[Channel];
1997           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
1998           dma_addr_t DCDB_dma = DCDBs_dma[Channel];
1999           DAC960_Command_T *Command = Controller->Commands[Channel];
2000           struct completion *Completion = &Completions[Channel];
2001
2002           init_completion(Completion);
2003           DAC960_V1_ClearCommand(Command);
2004           Command->CommandType = DAC960_ImmediateCommand;
2005           Command->Completion = Completion;
2006           Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
2007           Command->V1.CommandMailbox.Type3.BusAddress = DCDB_dma;
2008           DCDB->Channel = Channel;
2009           DCDB->TargetID = TargetID;
2010           DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
2011           DCDB->EarlyStatus = false;
2012           DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
2013           DCDB->NoAutomaticRequestSense = false;
2014           DCDB->DisconnectPermitted = true;
2015           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
2016           DCDB->BusAddress = NewInquiryStandardDataDMA;
2017           DCDB->CDBLength = 6;
2018           DCDB->TransferLengthHigh4 = 0;
2019           DCDB->SenseLength = sizeof(DCDB->SenseData);
2020           DCDB->CDB[0] = 0x12; /* INQUIRY */
2021           DCDB->CDB[1] = 0; /* EVPD = 0 */
2022           DCDB->CDB[2] = 0; /* Page Code */
2023           DCDB->CDB[3] = 0; /* Reserved */
2024           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
2025           DCDB->CDB[5] = 0; /* Control */
2026
2027           spin_lock_irqsave(&Controller->queue_lock, flags);
2028           DAC960_QueueCommand(Command);
2029           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2030         }
2031       /*
2032        * Wait for the problems submitted in the previous loop
2033        * to complete.  On the probes that are successful,
2034        * get the serial number of the device that was found.
2035        */
2036       for (Channel = 0; Channel < Controller->Channels; Channel++)
2037         {
2038           DAC960_SCSI_Inquiry_T *InquiryStandardData =
2039             &Controller->V1.InquiryStandardData[Channel][TargetID];
2040           DAC960_SCSI_Inquiry_T *NewInquiryStandardData = SCSI_Inquiry_cpu[Channel];
2041           dma_addr_t NewInquiryUnitSerialNumberDMA =
2042                         SCSI_NewInquiryUnitSerialNumberDMA[Channel];
2043           DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2044                         SCSI_NewInquiryUnitSerialNumberCPU[Channel];
2045           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2046             &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2047           DAC960_Command_T *Command = Controller->Commands[Channel];
2048           DAC960_V1_DCDB_T *DCDB = DCDBs_cpu[Channel];
2049           struct completion *Completion = &Completions[Channel];
2050
2051           wait_for_completion(Completion);
2052
2053           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2054             memset(InquiryStandardData, 0, sizeof(DAC960_SCSI_Inquiry_T));
2055             InquiryStandardData->PeripheralDeviceType = 0x1F;
2056             continue;
2057           } else
2058             memcpy(InquiryStandardData, NewInquiryStandardData, sizeof(DAC960_SCSI_Inquiry_T));
2059
2060           /* Preserve Channel and TargetID values from the previous loop */
2061           Command->Completion = Completion;
2062           DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2063           DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
2064           DCDB->SenseLength = sizeof(DCDB->SenseData);
2065           DCDB->CDB[0] = 0x12; /* INQUIRY */
2066           DCDB->CDB[1] = 1; /* EVPD = 1 */
2067           DCDB->CDB[2] = 0x80; /* Page Code */
2068           DCDB->CDB[3] = 0; /* Reserved */
2069           DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
2070           DCDB->CDB[5] = 0; /* Control */
2071
2072           spin_lock_irqsave(&Controller->queue_lock, flags);
2073           DAC960_QueueCommand(Command);
2074           spin_unlock_irqrestore(&Controller->queue_lock, flags);
2075           wait_for_completion(Completion);
2076
2077           if (Command->V1.CommandStatus != DAC960_V1_NormalCompletion) {
2078                 memset(InquiryUnitSerialNumber, 0,
2079                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2080                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2081           } else
2082                 memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2083                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2084         }
2085     }
2086     free_dma_loaf(Controller->PCIDevice, &local_dma);
2087   return true;
2088 }
2089
2090
2091 /*
2092   DAC960_V2_ReadDeviceConfiguration reads the Device Configuration Information
2093   for DAC960 V2 Firmware Controllers by requesting the Physical Device
2094   Information and SCSI Inquiry Unit Serial Number information for each
2095   device connected to Controller.
2096 */
2097
2098 static boolean DAC960_V2_ReadDeviceConfiguration(DAC960_Controller_T
2099                                                  *Controller)
2100 {
2101   unsigned char Channel = 0, TargetID = 0, LogicalUnit = 0;
2102   unsigned short PhysicalDeviceIndex = 0;
2103
2104   while (true)
2105     {
2106       DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
2107                 Controller->V2.NewPhysicalDeviceInformation;
2108       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo;
2109       DAC960_SCSI_Inquiry_UnitSerialNumber_T *NewInquiryUnitSerialNumber =
2110                 Controller->V2.NewInquiryUnitSerialNumber;
2111       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber;
2112
2113       if (!DAC960_V2_NewPhysicalDeviceInfo(Controller, Channel, TargetID, LogicalUnit))
2114           break;
2115
2116       PhysicalDeviceInfo = (DAC960_V2_PhysicalDeviceInfo_T *)
2117                 kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
2118       if (PhysicalDeviceInfo == NULL)
2119                 return DAC960_Failure(Controller, "PHYSICAL DEVICE ALLOCATION");
2120       Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex] =
2121                 PhysicalDeviceInfo;
2122       memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
2123                 sizeof(DAC960_V2_PhysicalDeviceInfo_T));
2124
2125       InquiryUnitSerialNumber = (DAC960_SCSI_Inquiry_UnitSerialNumber_T *)
2126         kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T), GFP_ATOMIC);
2127       if (InquiryUnitSerialNumber == NULL) {
2128         kfree(PhysicalDeviceInfo);
2129         return DAC960_Failure(Controller, "SERIAL NUMBER ALLOCATION");
2130       }
2131       Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex] =
2132                 InquiryUnitSerialNumber;
2133
2134       Channel = NewPhysicalDeviceInfo->Channel;
2135       TargetID = NewPhysicalDeviceInfo->TargetID;
2136       LogicalUnit = NewPhysicalDeviceInfo->LogicalUnit;
2137
2138       /*
2139          Some devices do NOT have Unit Serial Numbers.
2140          This command fails for them.  But, we still want to
2141          remember those devices are there.  Construct a
2142          UnitSerialNumber structure for the failure case.
2143       */
2144       if (!DAC960_V2_NewInquiryUnitSerialNumber(Controller, Channel, TargetID, LogicalUnit)) {
2145         memset(InquiryUnitSerialNumber, 0,
2146              sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2147         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
2148       } else
2149         memcpy(InquiryUnitSerialNumber, NewInquiryUnitSerialNumber,
2150                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
2151
2152       PhysicalDeviceIndex++;
2153       LogicalUnit++;
2154     }
2155   return true;
2156 }
2157
2158
2159 /*
2160   DAC960_SanitizeInquiryData sanitizes the Vendor, Model, Revision, and
2161   Product Serial Number fields of the Inquiry Standard Data and Inquiry
2162   Unit Serial Number structures.
2163 */
2164
2165 static void DAC960_SanitizeInquiryData(DAC960_SCSI_Inquiry_T
2166                                          *InquiryStandardData,
2167                                        DAC960_SCSI_Inquiry_UnitSerialNumber_T
2168                                          *InquiryUnitSerialNumber,
2169                                        unsigned char *Vendor,
2170                                        unsigned char *Model,
2171                                        unsigned char *Revision,
2172                                        unsigned char *SerialNumber)
2173 {
2174   int SerialNumberLength, i;
2175   if (InquiryStandardData->PeripheralDeviceType == 0x1F) return;
2176   for (i = 0; i < sizeof(InquiryStandardData->VendorIdentification); i++)
2177     {
2178       unsigned char VendorCharacter =
2179         InquiryStandardData->VendorIdentification[i];
2180       Vendor[i] = (VendorCharacter >= ' ' && VendorCharacter <= '~'
2181                    ? VendorCharacter : ' ');
2182     }
2183   Vendor[sizeof(InquiryStandardData->VendorIdentification)] = '\0';
2184   for (i = 0; i < sizeof(InquiryStandardData->ProductIdentification); i++)
2185     {
2186       unsigned char ModelCharacter =
2187         InquiryStandardData->ProductIdentification[i];
2188       Model[i] = (ModelCharacter >= ' ' && ModelCharacter <= '~'
2189                   ? ModelCharacter : ' ');
2190     }
2191   Model[sizeof(InquiryStandardData->ProductIdentification)] = '\0';
2192   for (i = 0; i < sizeof(InquiryStandardData->ProductRevisionLevel); i++)
2193     {
2194       unsigned char RevisionCharacter =
2195         InquiryStandardData->ProductRevisionLevel[i];
2196       Revision[i] = (RevisionCharacter >= ' ' && RevisionCharacter <= '~'
2197                      ? RevisionCharacter : ' ');
2198     }
2199   Revision[sizeof(InquiryStandardData->ProductRevisionLevel)] = '\0';
2200   if (InquiryUnitSerialNumber->PeripheralDeviceType == 0x1F) return;
2201   SerialNumberLength = InquiryUnitSerialNumber->PageLength;
2202   if (SerialNumberLength >
2203       sizeof(InquiryUnitSerialNumber->ProductSerialNumber))
2204     SerialNumberLength = sizeof(InquiryUnitSerialNumber->ProductSerialNumber);
2205   for (i = 0; i < SerialNumberLength; i++)
2206     {
2207       unsigned char SerialNumberCharacter =
2208         InquiryUnitSerialNumber->ProductSerialNumber[i];
2209       SerialNumber[i] =
2210         (SerialNumberCharacter >= ' ' && SerialNumberCharacter <= '~'
2211          ? SerialNumberCharacter : ' ');
2212     }
2213   SerialNumber[SerialNumberLength] = '\0';
2214 }
2215
2216
2217 /*
2218   DAC960_V1_ReportDeviceConfiguration reports the Device Configuration
2219   Information for DAC960 V1 Firmware Controllers.
2220 */
2221
2222 static boolean DAC960_V1_ReportDeviceConfiguration(DAC960_Controller_T
2223                                                    *Controller)
2224 {
2225   int LogicalDriveNumber, Channel, TargetID;
2226   DAC960_Info("  Physical Devices:\n", Controller);
2227   for (Channel = 0; Channel < Controller->Channels; Channel++)
2228     for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
2229       {
2230         DAC960_SCSI_Inquiry_T *InquiryStandardData =
2231           &Controller->V1.InquiryStandardData[Channel][TargetID];
2232         DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2233           &Controller->V1.InquiryUnitSerialNumber[Channel][TargetID];
2234         DAC960_V1_DeviceState_T *DeviceState =
2235           &Controller->V1.DeviceState[Channel][TargetID];
2236         DAC960_V1_ErrorTableEntry_T *ErrorEntry =
2237           &Controller->V1.ErrorTable.ErrorTableEntries[Channel][TargetID];
2238         char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2239         char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2240         char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2241         char SerialNumber[1+sizeof(InquiryUnitSerialNumber
2242                                    ->ProductSerialNumber)];
2243         if (InquiryStandardData->PeripheralDeviceType == 0x1F) continue;
2244         DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2245                                    Vendor, Model, Revision, SerialNumber);
2246         DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2247                     Controller, Channel, TargetID, (TargetID < 10 ? " " : ""),
2248                     Vendor, Model, Revision);
2249         if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2250           DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2251         if (DeviceState->Present &&
2252             DeviceState->DeviceType == DAC960_V1_DiskType)
2253           {
2254             if (Controller->V1.DeviceResetCount[Channel][TargetID] > 0)
2255               DAC960_Info("         Disk Status: %s, %u blocks, %d resets\n",
2256                           Controller,
2257                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2258                            ? "Dead"
2259                            : DeviceState->DeviceState
2260                              == DAC960_V1_Device_WriteOnly
2261                              ? "Write-Only"
2262                              : DeviceState->DeviceState
2263                                == DAC960_V1_Device_Online
2264                                ? "Online" : "Standby"),
2265                           DeviceState->DiskSize,
2266                           Controller->V1.DeviceResetCount[Channel][TargetID]);
2267             else
2268               DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2269                           (DeviceState->DeviceState == DAC960_V1_Device_Dead
2270                            ? "Dead"
2271                            : DeviceState->DeviceState
2272                              == DAC960_V1_Device_WriteOnly
2273                              ? "Write-Only"
2274                              : DeviceState->DeviceState
2275                                == DAC960_V1_Device_Online
2276                                ? "Online" : "Standby"),
2277                           DeviceState->DiskSize);
2278           }
2279         if (ErrorEntry->ParityErrorCount > 0 ||
2280             ErrorEntry->SoftErrorCount > 0 ||
2281             ErrorEntry->HardErrorCount > 0 ||
2282             ErrorEntry->MiscErrorCount > 0)
2283           DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2284                       "Hard: %d, Misc: %d\n", Controller,
2285                       ErrorEntry->ParityErrorCount,
2286                       ErrorEntry->SoftErrorCount,
2287                       ErrorEntry->HardErrorCount,
2288                       ErrorEntry->MiscErrorCount);
2289       }
2290   DAC960_Info("  Logical Drives:\n", Controller);
2291   for (LogicalDriveNumber = 0;
2292        LogicalDriveNumber < Controller->LogicalDriveCount;
2293        LogicalDriveNumber++)
2294     {
2295       DAC960_V1_LogicalDriveInformation_T *LogicalDriveInformation =
2296         &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
2297       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks, %s\n",
2298                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2299                   LogicalDriveInformation->RAIDLevel,
2300                   (LogicalDriveInformation->LogicalDriveState
2301                    == DAC960_V1_LogicalDrive_Online
2302                    ? "Online"
2303                    : LogicalDriveInformation->LogicalDriveState
2304                      == DAC960_V1_LogicalDrive_Critical
2305                      ? "Critical" : "Offline"),
2306                   LogicalDriveInformation->LogicalDriveSize,
2307                   (LogicalDriveInformation->WriteBack
2308                    ? "Write Back" : "Write Thru"));
2309     }
2310   return true;
2311 }
2312
2313
2314 /*
2315   DAC960_V2_ReportDeviceConfiguration reports the Device Configuration
2316   Information for DAC960 V2 Firmware Controllers.
2317 */
2318
2319 static boolean DAC960_V2_ReportDeviceConfiguration(DAC960_Controller_T
2320                                                    *Controller)
2321 {
2322   int PhysicalDeviceIndex, LogicalDriveNumber;
2323   DAC960_Info("  Physical Devices:\n", Controller);
2324   for (PhysicalDeviceIndex = 0;
2325        PhysicalDeviceIndex < DAC960_V2_MaxPhysicalDevices;
2326        PhysicalDeviceIndex++)
2327     {
2328       DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
2329         Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
2330       DAC960_SCSI_Inquiry_T *InquiryStandardData =
2331         (DAC960_SCSI_Inquiry_T *) &PhysicalDeviceInfo->SCSI_InquiryData;
2332       DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
2333         Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
2334       char Vendor[1+sizeof(InquiryStandardData->VendorIdentification)];
2335       char Model[1+sizeof(InquiryStandardData->ProductIdentification)];
2336       char Revision[1+sizeof(InquiryStandardData->ProductRevisionLevel)];
2337       char SerialNumber[1+sizeof(InquiryUnitSerialNumber->ProductSerialNumber)];
2338       if (PhysicalDeviceInfo == NULL) break;
2339       DAC960_SanitizeInquiryData(InquiryStandardData, InquiryUnitSerialNumber,
2340                                  Vendor, Model, Revision, SerialNumber);
2341       DAC960_Info("    %d:%d%s Vendor: %s  Model: %s  Revision: %s\n",
2342                   Controller,
2343                   PhysicalDeviceInfo->Channel,
2344                   PhysicalDeviceInfo->TargetID,
2345                   (PhysicalDeviceInfo->TargetID < 10 ? " " : ""),
2346                   Vendor, Model, Revision);
2347       if (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers == 0)
2348         DAC960_Info("         %sAsynchronous\n", Controller,
2349                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2350                      ? "Wide " :""));
2351       else
2352         DAC960_Info("         %sSynchronous at %d MB/sec\n", Controller,
2353                     (PhysicalDeviceInfo->NegotiatedDataWidthBits == 16
2354                      ? "Wide " :""),
2355                     (PhysicalDeviceInfo->NegotiatedSynchronousMegaTransfers
2356                      * PhysicalDeviceInfo->NegotiatedDataWidthBits/8));
2357       if (InquiryUnitSerialNumber->PeripheralDeviceType != 0x1F)
2358         DAC960_Info("         Serial Number: %s\n", Controller, SerialNumber);
2359       if (PhysicalDeviceInfo->PhysicalDeviceState ==
2360           DAC960_V2_Device_Unconfigured)
2361         continue;
2362       DAC960_Info("         Disk Status: %s, %u blocks\n", Controller,
2363                   (PhysicalDeviceInfo->PhysicalDeviceState
2364                    == DAC960_V2_Device_Online
2365                    ? "Online"
2366                    : PhysicalDeviceInfo->PhysicalDeviceState
2367                      == DAC960_V2_Device_Rebuild
2368                      ? "Rebuild"
2369                      : PhysicalDeviceInfo->PhysicalDeviceState
2370                        == DAC960_V2_Device_Missing
2371                        ? "Missing"
2372                        : PhysicalDeviceInfo->PhysicalDeviceState
2373                          == DAC960_V2_Device_Critical
2374                          ? "Critical"
2375                          : PhysicalDeviceInfo->PhysicalDeviceState
2376                            == DAC960_V2_Device_Dead
2377                            ? "Dead"
2378                            : PhysicalDeviceInfo->PhysicalDeviceState
2379                              == DAC960_V2_Device_SuspectedDead
2380                              ? "Suspected-Dead"
2381                              : PhysicalDeviceInfo->PhysicalDeviceState
2382                                == DAC960_V2_Device_CommandedOffline
2383                                ? "Commanded-Offline"
2384                                : PhysicalDeviceInfo->PhysicalDeviceState
2385                                  == DAC960_V2_Device_Standby
2386                                  ? "Standby" : "Unknown"),
2387                   PhysicalDeviceInfo->ConfigurableDeviceSize);
2388       if (PhysicalDeviceInfo->ParityErrors == 0 &&
2389           PhysicalDeviceInfo->SoftErrors == 0 &&
2390           PhysicalDeviceInfo->HardErrors == 0 &&
2391           PhysicalDeviceInfo->MiscellaneousErrors == 0 &&
2392           PhysicalDeviceInfo->CommandTimeouts == 0 &&
2393           PhysicalDeviceInfo->Retries == 0 &&
2394           PhysicalDeviceInfo->Aborts == 0 &&
2395           PhysicalDeviceInfo->PredictedFailuresDetected == 0)
2396         continue;
2397       DAC960_Info("         Errors - Parity: %d, Soft: %d, "
2398                   "Hard: %d, Misc: %d\n", Controller,
2399                   PhysicalDeviceInfo->ParityErrors,
2400                   PhysicalDeviceInfo->SoftErrors,
2401                   PhysicalDeviceInfo->HardErrors,
2402                   PhysicalDeviceInfo->MiscellaneousErrors);
2403       DAC960_Info("                  Timeouts: %d, Retries: %d, "
2404                   "Aborts: %d, Predicted: %d\n", Controller,
2405                   PhysicalDeviceInfo->CommandTimeouts,
2406                   PhysicalDeviceInfo->Retries,
2407                   PhysicalDeviceInfo->Aborts,
2408                   PhysicalDeviceInfo->PredictedFailuresDetected);
2409     }
2410   DAC960_Info("  Logical Drives:\n", Controller);
2411   for (LogicalDriveNumber = 0;
2412        LogicalDriveNumber < DAC960_MaxLogicalDrives;
2413        LogicalDriveNumber++)
2414     {
2415       DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
2416         Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
2417       unsigned char *ReadCacheStatus[] = { "Read Cache Disabled",
2418                                            "Read Cache Enabled",
2419                                            "Read Ahead Enabled",
2420                                            "Intelligent Read Ahead Enabled",
2421                                            "-", "-", "-", "-" };
2422       unsigned char *WriteCacheStatus[] = { "Write Cache Disabled",
2423                                             "Logical Device Read Only",
2424                                             "Write Cache Enabled",
2425                                             "Intelligent Write Cache Enabled",
2426                                             "-", "-", "-", "-" };
2427       unsigned char *GeometryTranslation;
2428       if (LogicalDeviceInfo == NULL) continue;
2429       switch (LogicalDeviceInfo->DriveGeometry)
2430         {
2431         case DAC960_V2_Geometry_128_32:
2432           GeometryTranslation = "128/32";
2433           break;
2434         case DAC960_V2_Geometry_255_63:
2435           GeometryTranslation = "255/63";
2436           break;
2437         default:
2438           GeometryTranslation = "Invalid";
2439           DAC960_Error("Illegal Logical Device Geometry %d\n",
2440                        Controller, LogicalDeviceInfo->DriveGeometry);
2441           break;
2442         }
2443       DAC960_Info("    /dev/rd/c%dd%d: RAID-%d, %s, %u blocks\n",
2444                   Controller, Controller->ControllerNumber, LogicalDriveNumber,
2445                   LogicalDeviceInfo->RAIDLevel,
2446                   (LogicalDeviceInfo->LogicalDeviceState
2447                    == DAC960_V2_LogicalDevice_Online
2448                    ? "Online"
2449                    : LogicalDeviceInfo->LogicalDeviceState
2450                      == DAC960_V2_LogicalDevice_Critical
2451                      ? "Critical" : "Offline"),
2452                   LogicalDeviceInfo->ConfigurableDeviceSize);
2453       DAC960_Info("                  Logical Device %s, BIOS Geometry: %s\n",
2454                   Controller,
2455                   (LogicalDeviceInfo->LogicalDeviceControl
2456                                      .LogicalDeviceInitialized
2457                    ? "Initialized" : "Uninitialized"),
2458                   GeometryTranslation);
2459       if (LogicalDeviceInfo->StripeSize == 0)
2460         {
2461           if (LogicalDeviceInfo->CacheLineSize == 0)
2462             DAC960_Info("                  Stripe Size: N/A, "
2463                         "Segment Size: N/A\n", Controller);
2464           else
2465             DAC960_Info("                  Stripe Size: N/A, "
2466                         "Segment Size: %dKB\n", Controller,
2467                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2468         }
2469       else
2470         {
2471           if (LogicalDeviceInfo->CacheLineSize == 0)
2472             DAC960_Info("                  Stripe Size: %dKB, "
2473                         "Segment Size: N/A\n", Controller,
2474                         1 << (LogicalDeviceInfo->StripeSize - 2));
2475           else
2476             DAC960_Info("                  Stripe Size: %dKB, "
2477                         "Segment Size: %dKB\n", Controller,
2478                         1 << (LogicalDeviceInfo->StripeSize - 2),
2479                         1 << (LogicalDeviceInfo->CacheLineSize - 2));
2480         }
2481       DAC960_Info("                  %s, %s\n", Controller,
2482                   ReadCacheStatus[
2483                     LogicalDeviceInfo->LogicalDeviceControl.ReadCache],
2484                   WriteCacheStatus[
2485                     LogicalDeviceInfo->LogicalDeviceControl.WriteCache]);
2486       if (LogicalDeviceInfo->SoftErrors > 0 ||
2487           LogicalDeviceInfo->CommandsFailed > 0 ||
2488           LogicalDeviceInfo->DeferredWriteErrors)
2489         DAC960_Info("                  Errors - Soft: %d, Failed: %d, "
2490                     "Deferred Write: %d\n", Controller,
2491                     LogicalDeviceInfo->SoftErrors,
2492                     LogicalDeviceInfo->CommandsFailed,
2493                     LogicalDeviceInfo->DeferredWriteErrors);
2494
2495     }
2496   return true;
2497 }
2498
2499 /*
2500   DAC960_RegisterBlockDevice registers the Block Device structures
2501   associated with Controller.
2502 */
2503
2504 static boolean DAC960_RegisterBlockDevice(DAC960_Controller_T *Controller)
2505 {
2506   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2507   int n;
2508
2509   /*
2510     Register the Block Device Major Number for this DAC960 Controller.
2511   */
2512   if (register_blkdev(MajorNumber, "dac960") < 0)
2513       return false;
2514
2515   for (n = 0; n < DAC960_MaxLogicalDrives; n++) {
2516         struct gendisk *disk = Controller->disks[n];
2517         struct request_queue *RequestQueue;
2518
2519         /* for now, let all request queues share controller's lock */
2520         RequestQueue = blk_init_queue(DAC960_RequestFunction,&Controller->queue_lock);
2521         if (!RequestQueue) {
2522                 printk("DAC960: failure to allocate request queue\n");
2523                 continue;
2524         }
2525         Controller->RequestQueue[n] = RequestQueue;
2526         blk_queue_bounce_limit(RequestQueue, Controller->BounceBufferLimit);
2527         RequestQueue->queuedata = Controller;
2528         blk_queue_max_hw_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2529         blk_queue_max_phys_segments(RequestQueue, Controller->DriverScatterGatherLimit);
2530         blk_queue_max_sectors(RequestQueue, Controller->MaxBlocksPerCommand);
2531         disk->queue = RequestQueue;
2532         sprintf(disk->disk_name, "rd/c%dd%d", Controller->ControllerNumber, n);
2533         disk->major = MajorNumber;
2534         disk->first_minor = n << DAC960_MaxPartitionsBits;
2535         disk->fops = &DAC960_BlockDeviceOperations;
2536    }
2537   /*
2538     Indicate the Block Device Registration completed successfully,
2539   */
2540   return true;
2541 }
2542
2543
2544 /*
2545   DAC960_UnregisterBlockDevice unregisters the Block Device structures
2546   associated with Controller.
2547 */
2548
2549 static void DAC960_UnregisterBlockDevice(DAC960_Controller_T *Controller)
2550 {
2551   int MajorNumber = DAC960_MAJOR + Controller->ControllerNumber;
2552   int disk;
2553
2554   /* does order matter when deleting gendisk and cleanup in request queue? */
2555   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
2556         del_gendisk(Controller->disks[disk]);
2557         blk_cleanup_queue(Controller->RequestQueue[disk]);
2558         Controller->RequestQueue[disk] = NULL;
2559   }
2560
2561   /*
2562     Unregister the Block Device Major Number for this DAC960 Controller.
2563   */
2564   unregister_blkdev(MajorNumber, "dac960");
2565 }
2566
2567 /*
2568   DAC960_ComputeGenericDiskInfo computes the values for the Generic Disk
2569   Information Partition Sector Counts and Block Sizes.
2570 */
2571
2572 static void DAC960_ComputeGenericDiskInfo(DAC960_Controller_T *Controller)
2573 {
2574         int disk;
2575         for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++)
2576                 set_capacity(Controller->disks[disk], disk_size(Controller, disk));
2577 }
2578
2579 /*
2580   DAC960_ReportErrorStatus reports Controller BIOS Messages passed through
2581   the Error Status Register when the driver performs the BIOS handshaking.
2582   It returns true for fatal errors and false otherwise.
2583 */
2584
2585 static boolean DAC960_ReportErrorStatus(DAC960_Controller_T *Controller,
2586                                         unsigned char ErrorStatus,
2587                                         unsigned char Parameter0,
2588                                         unsigned char Parameter1)
2589 {
2590   switch (ErrorStatus)
2591     {
2592     case 0x00:
2593       DAC960_Notice("Physical Device %d:%d Not Responding\n",
2594                     Controller, Parameter1, Parameter0);
2595       break;
2596     case 0x08:
2597       if (Controller->DriveSpinUpMessageDisplayed) break;
2598       DAC960_Notice("Spinning Up Drives\n", Controller);
2599       Controller->DriveSpinUpMessageDisplayed = true;
2600       break;
2601     case 0x30:
2602       DAC960_Notice("Configuration Checksum Error\n", Controller);
2603       break;
2604     case 0x60:
2605       DAC960_Notice("Mirror Race Recovery Failed\n", Controller);
2606       break;
2607     case 0x70:
2608       DAC960_Notice("Mirror Race Recovery In Progress\n", Controller);
2609       break;
2610     case 0x90:
2611       DAC960_Notice("Physical Device %d:%d COD Mismatch\n",
2612                     Controller, Parameter1, Parameter0);
2613       break;
2614     case 0xA0:
2615       DAC960_Notice("Logical Drive Installation Aborted\n", Controller);
2616       break;
2617     case 0xB0:
2618       DAC960_Notice("Mirror Race On A Critical Logical Drive\n", Controller);
2619       break;
2620     case 0xD0:
2621       DAC960_Notice("New Controller Configuration Found\n", Controller);
2622       break;
2623     case 0xF0:
2624       DAC960_Error("Fatal Memory Parity Error for Controller at\n", Controller);
2625       return true;
2626     default:
2627       DAC960_Error("Unknown Initialization Error %02X for Controller at\n",
2628                    Controller, ErrorStatus);
2629       return true;
2630     }
2631   return false;
2632 }
2633
2634
2635 /*
2636  * DAC960_DetectCleanup releases the resources that were allocated
2637  * during DAC960_DetectController().  DAC960_DetectController can
2638  * has several internal failure points, so not ALL resources may
2639  * have been allocated.  It's important to free only
2640  * resources that HAVE been allocated.  The code below always
2641  * tests that the resource has been allocated before attempting to
2642  * free it.
2643  */
2644 static void DAC960_DetectCleanup(DAC960_Controller_T *Controller)
2645 {
2646   int i;
2647
2648   /* Free the memory mailbox, status, and related structures */
2649   free_dma_loaf(Controller->PCIDevice, &Controller->DmaPages);
2650   if (Controller->MemoryMappedAddress) {
2651         switch(Controller->HardwareType)
2652         {
2653                 case DAC960_GEM_Controller:
2654                         DAC960_GEM_DisableInterrupts(Controller->BaseAddress);
2655                         break;
2656                 case DAC960_BA_Controller:
2657                         DAC960_BA_DisableInterrupts(Controller->BaseAddress);
2658                         break;
2659                 case DAC960_LP_Controller:
2660                         DAC960_LP_DisableInterrupts(Controller->BaseAddress);
2661                         break;
2662                 case DAC960_LA_Controller:
2663                         DAC960_LA_DisableInterrupts(Controller->BaseAddress);
2664                         break;
2665                 case DAC960_PG_Controller:
2666                         DAC960_PG_DisableInterrupts(Controller->BaseAddress);
2667                         break;
2668                 case DAC960_PD_Controller:
2669                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2670                         break;
2671                 case DAC960_P_Controller:
2672                         DAC960_PD_DisableInterrupts(Controller->BaseAddress);
2673                         break;
2674         }
2675         iounmap(Controller->MemoryMappedAddress);
2676   }
2677   if (Controller->IRQ_Channel)
2678         free_irq(Controller->IRQ_Channel, Controller);
2679   if (Controller->IO_Address)
2680         release_region(Controller->IO_Address, 0x80);
2681   pci_disable_device(Controller->PCIDevice);
2682   for (i = 0; (i < DAC960_MaxLogicalDrives) && Controller->disks[i]; i++)
2683        put_disk(Controller->disks[i]);
2684   DAC960_Controllers[Controller->ControllerNumber] = NULL;
2685   kfree(Controller);
2686 }
2687
2688
2689 /*
2690   DAC960_DetectController detects Mylex DAC960/AcceleRAID/eXtremeRAID
2691   PCI RAID Controllers by interrogating the PCI Configuration Space for
2692   Controller Type.
2693 */
2694
2695 static DAC960_Controller_T *
2696 DAC960_DetectController(struct pci_dev *PCI_Device,
2697                         const struct pci_device_id *entry)
2698 {
2699   struct DAC960_privdata *privdata =
2700                 (struct DAC960_privdata *)entry->driver_data;
2701   irqreturn_t (*InterruptHandler)(int, void *, struct pt_regs *) =
2702                 privdata->InterruptHandler;
2703   unsigned int MemoryWindowSize = privdata->MemoryWindowSize;
2704   DAC960_Controller_T *Controller = NULL;
2705   unsigned char DeviceFunction = PCI_Device->devfn;
2706   unsigned char ErrorStatus, Parameter0, Parameter1;
2707   unsigned int IRQ_Channel;
2708   void __iomem *BaseAddress;
2709   int i;
2710
2711   Controller = kzalloc(sizeof(DAC960_Controller_T), GFP_ATOMIC);
2712   if (Controller == NULL) {
2713         DAC960_Error("Unable to allocate Controller structure for "
2714                        "Controller at\n", NULL);
2715         return NULL;
2716   }
2717   Controller->ControllerNumber = DAC960_ControllerCount;
2718   DAC960_Controllers[DAC960_ControllerCount++] = Controller;
2719   Controller->Bus = PCI_Device->bus->number;
2720   Controller->FirmwareType = privdata->FirmwareType;
2721   Controller->HardwareType = privdata->HardwareType;
2722   Controller->Device = DeviceFunction >> 3;
2723   Controller->Function = DeviceFunction & 0x7;
2724   Controller->PCIDevice = PCI_Device;
2725   strcpy(Controller->FullModelName, "DAC960");
2726
2727   if (pci_enable_device(PCI_Device))
2728         goto Failure;
2729
2730   switch (Controller->HardwareType)
2731   {
2732         case DAC960_GEM_Controller:
2733           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2734           break;
2735         case DAC960_BA_Controller:
2736           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2737           break;
2738         case DAC960_LP_Controller:
2739           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2740           break;
2741         case DAC960_LA_Controller:
2742           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2743           break;
2744         case DAC960_PG_Controller:
2745           Controller->PCI_Address = pci_resource_start(PCI_Device, 0);
2746           break;
2747         case DAC960_PD_Controller:
2748           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2749           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2750           break;
2751         case DAC960_P_Controller:
2752           Controller->IO_Address = pci_resource_start(PCI_Device, 0);
2753           Controller->PCI_Address = pci_resource_start(PCI_Device, 1);
2754           break;
2755   }
2756
2757   pci_set_drvdata(PCI_Device, (void *)((long)Controller->ControllerNumber));
2758   for (i = 0; i < DAC960_MaxLogicalDrives; i++) {
2759         Controller->disks[i] = alloc_disk(1<<DAC960_MaxPartitionsBits);
2760         if (!Controller->disks[i])
2761                 goto Failure;
2762         Controller->disks[i]->private_data = (void *)((long)i);
2763   }
2764   init_waitqueue_head(&Controller->CommandWaitQueue);
2765   init_waitqueue_head(&Controller->HealthStatusWaitQueue);
2766   spin_lock_init(&Controller->queue_lock);
2767   DAC960_AnnounceDriver(Controller);
2768   /*
2769     Map the Controller Register Window.
2770   */
2771  if (MemoryWindowSize < PAGE_SIZE)
2772         MemoryWindowSize = PAGE_SIZE;
2773   Controller->MemoryMappedAddress =
2774         ioremap_nocache(Controller->PCI_Address & PAGE_MASK, MemoryWindowSize);
2775   Controller->BaseAddress =
2776         Controller->MemoryMappedAddress + (Controller->PCI_Address & ~PAGE_MASK);
2777   if (Controller->MemoryMappedAddress == NULL)
2778   {
2779           DAC960_Error("Unable to map Controller Register Window for "
2780                        "Controller at\n", Controller);
2781           goto Failure;
2782   }
2783   BaseAddress = Controller->BaseAddress;
2784   switch (Controller->HardwareType)
2785   {
2786         case DAC960_GEM_Controller:
2787           DAC960_GEM_DisableInterrupts(BaseAddress);
2788           DAC960_GEM_AcknowledgeHardwareMailboxStatus(BaseAddress);
2789           udelay(1000);
2790           while (DAC960_GEM_InitializationInProgressP(BaseAddress))
2791             {
2792               if (DAC960_GEM_ReadErrorStatus(BaseAddress, &ErrorStatus,
2793                                             &Parameter0, &Parameter1) &&
2794                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2795                                            Parameter0, Parameter1))
2796                 goto Failure;
2797               udelay(10);
2798             }
2799           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2800             {
2801               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2802                            "for Controller at\n", Controller);
2803               goto Failure;
2804             }
2805           DAC960_GEM_EnableInterrupts(BaseAddress);
2806           Controller->QueueCommand = DAC960_GEM_QueueCommand;
2807           Controller->ReadControllerConfiguration =
2808             DAC960_V2_ReadControllerConfiguration;
2809           Controller->ReadDeviceConfiguration =
2810             DAC960_V2_ReadDeviceConfiguration;
2811           Controller->ReportDeviceConfiguration =
2812             DAC960_V2_ReportDeviceConfiguration;
2813           Controller->QueueReadWriteCommand =
2814             DAC960_V2_QueueReadWriteCommand;
2815           break;
2816         case DAC960_BA_Controller:
2817           DAC960_BA_DisableInterrupts(BaseAddress);
2818           DAC960_BA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2819           udelay(1000);
2820           while (DAC960_BA_InitializationInProgressP(BaseAddress))
2821             {
2822               if (DAC960_BA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2823                                             &Parameter0, &Parameter1) &&
2824                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2825                                            Parameter0, Parameter1))
2826                 goto Failure;
2827               udelay(10);
2828             }
2829           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2830             {
2831               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2832                            "for Controller at\n", Controller);
2833               goto Failure;
2834             }
2835           DAC960_BA_EnableInterrupts(BaseAddress);
2836           Controller->QueueCommand = DAC960_BA_QueueCommand;
2837           Controller->ReadControllerConfiguration =
2838             DAC960_V2_ReadControllerConfiguration;
2839           Controller->ReadDeviceConfiguration =
2840             DAC960_V2_ReadDeviceConfiguration;
2841           Controller->ReportDeviceConfiguration =
2842             DAC960_V2_ReportDeviceConfiguration;
2843           Controller->QueueReadWriteCommand =
2844             DAC960_V2_QueueReadWriteCommand;
2845           break;
2846         case DAC960_LP_Controller:
2847           DAC960_LP_DisableInterrupts(BaseAddress);
2848           DAC960_LP_AcknowledgeHardwareMailboxStatus(BaseAddress);
2849           udelay(1000);
2850           while (DAC960_LP_InitializationInProgressP(BaseAddress))
2851             {
2852               if (DAC960_LP_ReadErrorStatus(BaseAddress, &ErrorStatus,
2853                                             &Parameter0, &Parameter1) &&
2854                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2855                                            Parameter0, Parameter1))
2856                 goto Failure;
2857               udelay(10);
2858             }
2859           if (!DAC960_V2_EnableMemoryMailboxInterface(Controller))
2860             {
2861               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2862                            "for Controller at\n", Controller);
2863               goto Failure;
2864             }
2865           DAC960_LP_EnableInterrupts(BaseAddress);
2866           Controller->QueueCommand = DAC960_LP_QueueCommand;
2867           Controller->ReadControllerConfiguration =
2868             DAC960_V2_ReadControllerConfiguration;
2869           Controller->ReadDeviceConfiguration =
2870             DAC960_V2_ReadDeviceConfiguration;
2871           Controller->ReportDeviceConfiguration =
2872             DAC960_V2_ReportDeviceConfiguration;
2873           Controller->QueueReadWriteCommand =
2874             DAC960_V2_QueueReadWriteCommand;
2875           break;
2876         case DAC960_LA_Controller:
2877           DAC960_LA_DisableInterrupts(BaseAddress);
2878           DAC960_LA_AcknowledgeHardwareMailboxStatus(BaseAddress);
2879           udelay(1000);
2880           while (DAC960_LA_InitializationInProgressP(BaseAddress))
2881             {
2882               if (DAC960_LA_ReadErrorStatus(BaseAddress, &ErrorStatus,
2883                                             &Parameter0, &Parameter1) &&
2884                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2885                                            Parameter0, Parameter1))
2886                 goto Failure;
2887               udelay(10);
2888             }
2889           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2890             {
2891               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2892                            "for Controller at\n", Controller);
2893               goto Failure;
2894             }
2895           DAC960_LA_EnableInterrupts(BaseAddress);
2896           if (Controller->V1.DualModeMemoryMailboxInterface)
2897             Controller->QueueCommand = DAC960_LA_QueueCommandDualMode;
2898           else Controller->QueueCommand = DAC960_LA_QueueCommandSingleMode;
2899           Controller->ReadControllerConfiguration =
2900             DAC960_V1_ReadControllerConfiguration;
2901           Controller->ReadDeviceConfiguration =
2902             DAC960_V1_ReadDeviceConfiguration;
2903           Controller->ReportDeviceConfiguration =
2904             DAC960_V1_ReportDeviceConfiguration;
2905           Controller->QueueReadWriteCommand =
2906             DAC960_V1_QueueReadWriteCommand;
2907           break;
2908         case DAC960_PG_Controller:
2909           DAC960_PG_DisableInterrupts(BaseAddress);
2910           DAC960_PG_AcknowledgeHardwareMailboxStatus(BaseAddress);
2911           udelay(1000);
2912           while (DAC960_PG_InitializationInProgressP(BaseAddress))
2913             {
2914               if (DAC960_PG_ReadErrorStatus(BaseAddress, &ErrorStatus,
2915                                             &Parameter0, &Parameter1) &&
2916                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2917                                            Parameter0, Parameter1))
2918                 goto Failure;
2919               udelay(10);
2920             }
2921           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2922             {
2923               DAC960_Error("Unable to Enable Memory Mailbox Interface "
2924                            "for Controller at\n", Controller);
2925               goto Failure;
2926             }
2927           DAC960_PG_EnableInterrupts(BaseAddress);
2928           if (Controller->V1.DualModeMemoryMailboxInterface)
2929             Controller->QueueCommand = DAC960_PG_QueueCommandDualMode;
2930           else Controller->QueueCommand = DAC960_PG_QueueCommandSingleMode;
2931           Controller->ReadControllerConfiguration =
2932             DAC960_V1_ReadControllerConfiguration;
2933           Controller->ReadDeviceConfiguration =
2934             DAC960_V1_ReadDeviceConfiguration;
2935           Controller->ReportDeviceConfiguration =
2936             DAC960_V1_ReportDeviceConfiguration;
2937           Controller->QueueReadWriteCommand =
2938             DAC960_V1_QueueReadWriteCommand;
2939           break;
2940         case DAC960_PD_Controller:
2941           if (!request_region(Controller->IO_Address, 0x80,
2942                               Controller->FullModelName)) {
2943                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2944                              Controller, Controller->IO_Address);
2945                 goto Failure;
2946           }
2947           DAC960_PD_DisableInterrupts(BaseAddress);
2948           DAC960_PD_AcknowledgeStatus(BaseAddress);
2949           udelay(1000);
2950           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2951             {
2952               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2953                                             &Parameter0, &Parameter1) &&
2954                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2955                                            Parameter0, Parameter1))
2956                 goto Failure;
2957               udelay(10);
2958             }
2959           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2960             {
2961               DAC960_Error("Unable to allocate DMA mapped memory "
2962                            "for Controller at\n", Controller);
2963               goto Failure;
2964             }
2965           DAC960_PD_EnableInterrupts(BaseAddress);
2966           Controller->QueueCommand = DAC960_PD_QueueCommand;
2967           Controller->ReadControllerConfiguration =
2968             DAC960_V1_ReadControllerConfiguration;
2969           Controller->ReadDeviceConfiguration =
2970             DAC960_V1_ReadDeviceConfiguration;
2971           Controller->ReportDeviceConfiguration =
2972             DAC960_V1_ReportDeviceConfiguration;
2973           Controller->QueueReadWriteCommand =
2974             DAC960_V1_QueueReadWriteCommand;
2975           break;
2976         case DAC960_P_Controller:
2977           if (!request_region(Controller->IO_Address, 0x80,
2978                               Controller->FullModelName)){
2979                 DAC960_Error("IO port 0x%d busy for Controller at\n",
2980                              Controller, Controller->IO_Address);
2981                 goto Failure;
2982           }
2983           DAC960_PD_DisableInterrupts(BaseAddress);
2984           DAC960_PD_AcknowledgeStatus(BaseAddress);
2985           udelay(1000);
2986           while (DAC960_PD_InitializationInProgressP(BaseAddress))
2987             {
2988               if (DAC960_PD_ReadErrorStatus(BaseAddress, &ErrorStatus,
2989                                             &Parameter0, &Parameter1) &&
2990                   DAC960_ReportErrorStatus(Controller, ErrorStatus,
2991                                            Parameter0, Parameter1))
2992                 goto Failure;
2993               udelay(10);
2994             }
2995           if (!DAC960_V1_EnableMemoryMailboxInterface(Controller))
2996             {
2997               DAC960_Error("Unable to allocate DMA mapped memory"
2998                            "for Controller at\n", Controller);
2999               goto Failure;
3000             }
3001           DAC960_PD_EnableInterrupts(BaseAddress);
3002           Controller->QueueCommand = DAC960_P_QueueCommand;
3003           Controller->ReadControllerConfiguration =
3004             DAC960_V1_ReadControllerConfiguration;
3005           Controller->ReadDeviceConfiguration =
3006             DAC960_V1_ReadDeviceConfiguration;
3007           Controller->ReportDeviceConfiguration =
3008             DAC960_V1_ReportDeviceConfiguration;
3009           Controller->QueueReadWriteCommand =
3010             DAC960_V1_QueueReadWriteCommand;
3011           break;
3012   }
3013   /*
3014      Acquire shared access to the IRQ Channel.
3015   */
3016   IRQ_Channel = PCI_Device->irq;
3017   if (request_irq(IRQ_Channel, InterruptHandler, IRQF_SHARED,
3018                       Controller->FullModelName, Controller) < 0)
3019   {
3020         DAC960_Error("Unable to acquire IRQ Channel %d for Controller at\n",
3021                        Controller, Controller->IRQ_Channel);
3022         goto Failure;
3023   }
3024   Controller->IRQ_Channel = IRQ_Channel;
3025   Controller->InitialCommand.CommandIdentifier = 1;
3026   Controller->InitialCommand.Controller = Controller;
3027   Controller->Commands[0] = &Controller->InitialCommand;
3028   Controller->FreeCommands = &Controller->InitialCommand;
3029   return Controller;
3030
3031 Failure:
3032   if (Controller->IO_Address == 0)
3033         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address N/A "
3034                      "PCI Address 0x%X\n", Controller,
3035                      Controller->Bus, Controller->Device,
3036                      Controller->Function, Controller->PCI_Address);
3037   else
3038         DAC960_Error("PCI Bus %d Device %d Function %d I/O Address "
3039                         "0x%X PCI Address 0x%X\n", Controller,
3040                         Controller->Bus, Controller->Device,
3041                         Controller->Function, Controller->IO_Address,
3042                         Controller->PCI_Address);
3043   DAC960_DetectCleanup(Controller);
3044   DAC960_ControllerCount--;
3045   return NULL;
3046 }
3047
3048 /*
3049   DAC960_InitializeController initializes Controller.
3050 */
3051
3052 static boolean
3053 DAC960_InitializeController(DAC960_Controller_T *Controller)
3054 {
3055   if (DAC960_ReadControllerConfiguration(Controller) &&
3056       DAC960_ReportControllerConfiguration(Controller) &&
3057       DAC960_CreateAuxiliaryStructures(Controller) &&
3058       DAC960_ReadDeviceConfiguration(Controller) &&
3059       DAC960_ReportDeviceConfiguration(Controller) &&
3060       DAC960_RegisterBlockDevice(Controller))
3061     {
3062       /*
3063         Initialize the Monitoring Timer.
3064       */
3065       init_timer(&Controller->MonitoringTimer);
3066       Controller->MonitoringTimer.expires =
3067         jiffies + DAC960_MonitoringTimerInterval;
3068       Controller->MonitoringTimer.data = (unsigned long) Controller;
3069       Controller->MonitoringTimer.function = DAC960_MonitoringTimerFunction;
3070       add_timer(&Controller->MonitoringTimer);
3071       Controller->ControllerInitialized = true;
3072       return true;
3073     }
3074   return false;
3075 }
3076
3077
3078 /*
3079   DAC960_FinalizeController finalizes Controller.
3080 */
3081
3082 static void DAC960_FinalizeController(DAC960_Controller_T *Controller)
3083 {
3084   if (Controller->ControllerInitialized)
3085     {
3086       unsigned long flags;
3087
3088       /*
3089        * Acquiring and releasing lock here eliminates
3090        * a very low probability race.
3091        *
3092        * The code below allocates controller command structures
3093        * from the free list without holding the controller lock.
3094        * This is safe assuming there is no other activity on
3095        * the controller at the time.
3096        *
3097        * But, there might be a monitoring command still
3098        * in progress.  Setting the Shutdown flag while holding
3099        * the lock ensures that there is no monitoring command
3100        * in the interrupt handler currently, and any monitoring
3101        * commands that complete from this time on will NOT return
3102        * their command structure to the free list.
3103        */
3104
3105       spin_lock_irqsave(&Controller->queue_lock, flags);
3106       Controller->ShutdownMonitoringTimer = 1;
3107       spin_unlock_irqrestore(&Controller->queue_lock, flags);
3108
3109       del_timer_sync(&Controller->MonitoringTimer);
3110       if (Controller->FirmwareType == DAC960_V1_Controller)
3111         {
3112           DAC960_Notice("Flushing Cache...", Controller);
3113           DAC960_V1_ExecuteType3(Controller, DAC960_V1_Flush, 0);
3114           DAC960_Notice("done\n", Controller);
3115
3116           if (Controller->HardwareType == DAC960_PD_Controller)
3117               release_region(Controller->IO_Address, 0x80);
3118         }
3119       else
3120         {
3121           DAC960_Notice("Flushing Cache...", Controller);
3122           DAC960_V2_DeviceOperation(Controller, DAC960_V2_PauseDevice,
3123                                     DAC960_V2_RAID_Controller);
3124           DAC960_Notice("done\n", Controller);
3125         }
3126     }
3127   DAC960_UnregisterBlockDevice(Controller);
3128   DAC960_DestroyAuxiliaryStructures(Controller);
3129   DAC960_DestroyProcEntries(Controller);
3130   DAC960_DetectCleanup(Controller);
3131 }
3132
3133
3134 /*
3135   DAC960_Probe verifies controller's existence and
3136   initializes the DAC960 Driver for that controller.
3137 */
3138
3139 static int
3140 DAC960_Probe(struct pci_dev *dev, const struct pci_device_id *entry)
3141 {
3142   int disk;
3143   DAC960_Controller_T *Controller;
3144
3145   if (DAC960_ControllerCount == DAC960_MaxControllers)
3146   {
3147         DAC960_Error("More than %d DAC960 Controllers detected - "
3148                        "ignoring from Controller at\n",
3149                        NULL, DAC960_MaxControllers);
3150         return -ENODEV;
3151   }
3152
3153   Controller = DAC960_DetectController(dev, entry);
3154   if (!Controller)
3155         return -ENODEV;
3156
3157   if (!DAC960_InitializeController(Controller)) {
3158         DAC960_FinalizeController(Controller);
3159         return -ENODEV;
3160   }
3161
3162   for (disk = 0; disk < DAC960_MaxLogicalDrives; disk++) {
3163         set_capacity(Controller->disks[disk], disk_size(Controller, disk));
3164         add_disk(Controller->disks[disk]);
3165   }
3166   DAC960_CreateProcEntries(Controller);
3167   return 0;
3168 }
3169
3170
3171 /*
3172   DAC960_Finalize finalizes the DAC960 Driver.
3173 */
3174
3175 static void DAC960_Remove(struct pci_dev *PCI_Device)
3176 {
3177   int Controller_Number = (long)pci_get_drvdata(PCI_Device);
3178   DAC960_Controller_T *Controller = DAC960_Controllers[Controller_Number];
3179   if (Controller != NULL)
3180       DAC960_FinalizeController(Controller);
3181 }
3182
3183
3184 /*
3185   DAC960_V1_QueueReadWriteCommand prepares and queues a Read/Write Command for
3186   DAC960 V1 Firmware Controllers.
3187 */
3188
3189 static void DAC960_V1_QueueReadWriteCommand(DAC960_Command_T *Command)
3190 {
3191   DAC960_Controller_T *Controller = Command->Controller;
3192   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
3193   DAC960_V1_ScatterGatherSegment_T *ScatterGatherList =
3194                                         Command->V1.ScatterGatherList;
3195   struct scatterlist *ScatterList = Command->V1.ScatterList;
3196
3197   DAC960_V1_ClearCommand(Command);
3198
3199   if (Command->SegmentCount == 1)
3200     {
3201       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3202         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Read;
3203       else
3204         CommandMailbox->Type5.CommandOpcode = DAC960_V1_Write;
3205
3206       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3207       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3208       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3209       CommandMailbox->Type5.BusAddress =
3210                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3211     }
3212   else
3213     {
3214       int i;
3215
3216       if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3217         CommandMailbox->Type5.CommandOpcode = DAC960_V1_ReadWithScatterGather;
3218       else
3219         CommandMailbox->Type5.CommandOpcode = DAC960_V1_WriteWithScatterGather;
3220
3221       CommandMailbox->Type5.LD.TransferLength = Command->BlockCount;
3222       CommandMailbox->Type5.LD.LogicalDriveNumber = Command->LogicalDriveNumber;
3223       CommandMailbox->Type5.LogicalBlockAddress = Command->BlockNumber;
3224       CommandMailbox->Type5.BusAddress = Command->V1.ScatterGatherListDMA;
3225
3226       CommandMailbox->Type5.ScatterGatherCount = Command->SegmentCount;
3227
3228       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3229                 ScatterGatherList->SegmentDataPointer =
3230                         (DAC960_BusAddress32_T)sg_dma_address(ScatterList);
3231                 ScatterGatherList->SegmentByteCount =
3232                         (DAC960_ByteCount32_T)sg_dma_len(ScatterList);
3233       }
3234     }
3235   DAC960_QueueCommand(Command);
3236 }
3237
3238
3239 /*
3240   DAC960_V2_QueueReadWriteCommand prepares and queues a Read/Write Command for
3241   DAC960 V2 Firmware Controllers.
3242 */
3243
3244 static void DAC960_V2_QueueReadWriteCommand(DAC960_Command_T *Command)
3245 {
3246   DAC960_Controller_T *Controller = Command->Controller;
3247   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
3248   struct scatterlist *ScatterList = Command->V2.ScatterList;
3249
3250   DAC960_V2_ClearCommand(Command);
3251
3252   CommandMailbox->SCSI_10.CommandOpcode = DAC960_V2_SCSI_10;
3253   CommandMailbox->SCSI_10.CommandControlBits.DataTransferControllerToHost =
3254     (Command->DmaDirection == PCI_DMA_FROMDEVICE);
3255   CommandMailbox->SCSI_10.DataTransferSize =
3256     Command->BlockCount << DAC960_BlockSizeBits;
3257   CommandMailbox->SCSI_10.RequestSenseBusAddress = Command->V2.RequestSenseDMA;
3258   CommandMailbox->SCSI_10.PhysicalDevice =
3259     Controller->V2.LogicalDriveToVirtualDevice[Command->LogicalDriveNumber];
3260   CommandMailbox->SCSI_10.RequestSenseSize = sizeof(DAC960_SCSI_RequestSense_T);
3261   CommandMailbox->SCSI_10.CDBLength = 10;
3262   CommandMailbox->SCSI_10.SCSI_CDB[0] =
3263     (Command->DmaDirection == PCI_DMA_FROMDEVICE ? 0x28 : 0x2A);
3264   CommandMailbox->SCSI_10.SCSI_CDB[2] = Command->BlockNumber >> 24;
3265   CommandMailbox->SCSI_10.SCSI_CDB[3] = Command->BlockNumber >> 16;
3266   CommandMailbox->SCSI_10.SCSI_CDB[4] = Command->BlockNumber >> 8;
3267   CommandMailbox->SCSI_10.SCSI_CDB[5] = Command->BlockNumber;
3268   CommandMailbox->SCSI_10.SCSI_CDB[7] = Command->BlockCount >> 8;
3269   CommandMailbox->SCSI_10.SCSI_CDB[8] = Command->BlockCount;
3270
3271   if (Command->SegmentCount == 1)
3272     {
3273       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3274                              .ScatterGatherSegments[0]
3275                              .SegmentDataPointer =
3276         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3277       CommandMailbox->SCSI_10.DataTransferMemoryAddress
3278                              .ScatterGatherSegments[0]
3279                              .SegmentByteCount =
3280         CommandMailbox->SCSI_10.DataTransferSize;
3281     }
3282   else
3283     {
3284       DAC960_V2_ScatterGatherSegment_T *ScatterGatherList;
3285       int i;
3286
3287       if (Command->SegmentCount > 2)
3288         {
3289           ScatterGatherList = Command->V2.ScatterGatherList;
3290           CommandMailbox->SCSI_10.CommandControlBits
3291                          .AdditionalScatterGatherListMemory = true;
3292           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3293                 .ExtendedScatterGather.ScatterGatherList0Length = Command->SegmentCount;
3294           CommandMailbox->SCSI_10.DataTransferMemoryAddress
3295                          .ExtendedScatterGather.ScatterGatherList0Address =
3296             Command->V2.ScatterGatherListDMA;
3297         }
3298       else
3299         ScatterGatherList = CommandMailbox->SCSI_10.DataTransferMemoryAddress
3300                                  .ScatterGatherSegments;
3301
3302       for (i = 0; i < Command->SegmentCount; i++, ScatterList++, ScatterGatherList++) {
3303                 ScatterGatherList->SegmentDataPointer =
3304                         (DAC960_BusAddress64_T)sg_dma_address(ScatterList);
3305                 ScatterGatherList->SegmentByteCount =
3306                         (DAC960_ByteCount64_T)sg_dma_len(ScatterList);
3307       }
3308     }
3309   DAC960_QueueCommand(Command);
3310 }
3311
3312
3313 static int DAC960_process_queue(DAC960_Controller_T *Controller, struct request_queue *req_q)
3314 {
3315         struct request *Request;
3316         DAC960_Command_T *Command;
3317
3318    while(1) {
3319         Request = elv_next_request(req_q);
3320         if (!Request)
3321                 return 1;
3322
3323         Command = DAC960_AllocateCommand(Controller);
3324         if (Command == NULL)
3325                 return 0;
3326
3327         if (rq_data_dir(Request) == READ) {
3328                 Command->DmaDirection = PCI_DMA_FROMDEVICE;
3329                 Command->CommandType = DAC960_ReadCommand;
3330         } else {
3331                 Command->DmaDirection = PCI_DMA_TODEVICE;
3332                 Command->CommandType = DAC960_WriteCommand;
3333         }
3334         Command->Completion = Request->end_io_data;
3335         Command->LogicalDriveNumber = (long)Request->rq_disk->private_data;
3336         Command->BlockNumber = Request->sector;
3337         Command->BlockCount = Request->nr_sectors;
3338         Command->Request = Request;
3339         blkdev_dequeue_request(Request);
3340         Command->SegmentCount = blk_rq_map_sg(req_q,
3341                   Command->Request, Command->cmd_sglist);
3342         /* pci_map_sg MAY change the value of SegCount */
3343         Command->SegmentCount = pci_map_sg(Controller->PCIDevice, Command->cmd_sglist,
3344                  Command->SegmentCount, Command->DmaDirection);
3345
3346         DAC960_QueueReadWriteCommand(Command);
3347   }
3348 }
3349
3350 /*
3351   DAC960_ProcessRequest attempts to remove one I/O Request from Controller's
3352   I/O Request Queue and queues it to the Controller.  WaitForCommand is true if
3353   this function should wait for a Command to become available if necessary.
3354   This function returns true if an I/O Request was queued and false otherwise.
3355 */
3356 static void DAC960_ProcessRequest(DAC960_Controller_T *controller)
3357 {
3358         int i;
3359
3360         if (!controller->ControllerInitialized)
3361                 return;
3362
3363         /* Do this better later! */
3364         for (i = controller->req_q_index; i < DAC960_MaxLogicalDrives; i++) {
3365                 struct request_queue *req_q = controller->RequestQueue[i];
3366
3367                 if (req_q == NULL)
3368                         continue;
3369
3370                 if (!DAC960_process_queue(controller, req_q)) {
3371                         controller->req_q_index = i;
3372                         return;
3373                 }
3374         }
3375
3376         if (controller->req_q_index == 0)
3377                 return;
3378
3379         for (i = 0; i < controller->req_q_index; i++) {
3380                 struct request_queue *req_q = controller->RequestQueue[i];
3381
3382                 if (req_q == NULL)
3383                         continue;
3384
3385                 if (!DAC960_process_queue(controller, req_q)) {
3386                         controller->req_q_index = i;
3387                         return;
3388                 }
3389         }
3390 }
3391
3392
3393 /*
3394   DAC960_queue_partial_rw extracts one bio from the request already
3395   associated with argument command, and construct a new command block to retry I/O
3396   only on that bio.  Queue that command to the controller.
3397
3398   This function re-uses a previously-allocated Command,
3399         there is no failure mode from trying to allocate a command.
3400 */
3401
3402 static void DAC960_queue_partial_rw(DAC960_Command_T *Command)
3403 {
3404   DAC960_Controller_T *Controller = Command->Controller;
3405   struct request *Request = Command->Request;
3406   struct request_queue *req_q = Controller->RequestQueue[Command->LogicalDriveNumber];
3407
3408   if (Command->DmaDirection == PCI_DMA_FROMDEVICE)
3409     Command->CommandType = DAC960_ReadRetryCommand;
3410   else
3411     Command->CommandType = DAC960_WriteRetryCommand;
3412
3413   /*
3414    * We could be more efficient with these mapping requests
3415    * and map only the portions that we need.  But since this
3416    * code should almost never be called, just go with a
3417    * simple coding.
3418    */
3419   (void)blk_rq_map_sg(req_q, Command->Request, Command->cmd_sglist);
3420
3421   (void)pci_map_sg(Controller->PCIDevice, Command->cmd_sglist, 1, Command->DmaDirection);
3422   /*
3423    * Resubmitting the request sector at a time is really tedious.
3424    * But, this should almost never happen.  So, we're willing to pay
3425    * this price so that in the end, as much of the transfer is completed
3426    * successfully as possible.
3427    */
3428   Command->SegmentCount = 1;
3429   Command->BlockNumber = Request->sector;
3430   Command->BlockCount = 1;
3431   DAC960_QueueReadWriteCommand(Command);
3432   return;
3433 }
3434
3435 /*
3436   DAC960_RequestFunction is the I/O Request Function for DAC960 Controllers.
3437 */
3438
3439 static void DAC960_RequestFunction(struct request_queue *RequestQueue)
3440 {
3441         DAC960_ProcessRequest(RequestQueue->queuedata);
3442 }
3443
3444 /*
3445   DAC960_ProcessCompletedBuffer performs completion processing for an
3446   individual Buffer.
3447 */
3448
3449 static inline boolean DAC960_ProcessCompletedRequest(DAC960_Command_T *Command,
3450                                                  boolean SuccessfulIO)
3451 {
3452         struct request *Request = Command->Request;
3453         int UpToDate;
3454
3455         UpToDate = 0;
3456         if (SuccessfulIO)
3457                 UpToDate = 1;
3458
3459         pci_unmap_sg(Command->Controller->PCIDevice, Command->cmd_sglist,
3460                 Command->SegmentCount, Command->DmaDirection);
3461
3462          if (!end_that_request_first(Request, UpToDate, Command->BlockCount)) {
3463                 add_disk_randomness(Request->rq_disk);
3464                 end_that_request_last(Request, UpToDate);
3465
3466                 if (Command->Completion) {
3467                         complete(Command->Completion);
3468                         Command->Completion = NULL;
3469                 }
3470                 return true;
3471         }
3472         return false;
3473 }
3474
3475 /*
3476   DAC960_V1_ReadWriteError prints an appropriate error message for Command
3477   when an error occurs on a Read or Write operation.
3478 */
3479
3480 static void DAC960_V1_ReadWriteError(DAC960_Command_T *Command)
3481 {
3482   DAC960_Controller_T *Controller = Command->Controller;
3483   unsigned char *CommandName = "UNKNOWN";
3484   switch (Command->CommandType)
3485     {
3486     case DAC960_ReadCommand:
3487     case DAC960_ReadRetryCommand:
3488       CommandName = "READ";
3489       break;
3490     case DAC960_WriteCommand:
3491     case DAC960_WriteRetryCommand:
3492       CommandName = "WRITE";
3493       break;
3494     case DAC960_MonitoringCommand:
3495     case DAC960_ImmediateCommand:
3496     case DAC960_QueuedCommand:
3497       break;
3498     }
3499   switch (Command->V1.CommandStatus)
3500     {
3501     case DAC960_V1_IrrecoverableDataError:
3502       DAC960_Error("Irrecoverable Data Error on %s:\n",
3503                    Controller, CommandName);
3504       break;
3505     case DAC960_V1_LogicalDriveNonexistentOrOffline:
3506       DAC960_Error("Logical Drive Nonexistent or Offline on %s:\n",
3507                    Controller, CommandName);
3508       break;
3509     case DAC960_V1_AccessBeyondEndOfLogicalDrive:
3510       DAC960_Error("Attempt to Access Beyond End of Logical Drive "
3511                    "on %s:\n", Controller, CommandName);
3512       break;
3513     case DAC960_V1_BadDataEncountered:
3514       DAC960_Error("Bad Data Encountered on %s:\n", Controller, CommandName);
3515       break;
3516     default:
3517       DAC960_Error("Unexpected Error Status %04X on %s:\n",
3518                    Controller, Command->V1.CommandStatus, CommandName);
3519       break;
3520     }
3521   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
3522                Controller, Controller->ControllerNumber,
3523                Command->LogicalDriveNumber, Command->BlockNumber,
3524                Command->BlockNumber + Command->BlockCount - 1);
3525 }
3526
3527
3528 /*
3529   DAC960_V1_ProcessCompletedCommand performs completion processing for Command
3530   for DAC960 V1 Firmware Controllers.
3531 */
3532
3533 static void DAC960_V1_ProcessCompletedCommand(DAC960_Command_T *Command)
3534 {
3535   DAC960_Controller_T *Controller = Command->Controller;
3536   DAC960_CommandType_T CommandType = Command->CommandType;
3537   DAC960_V1_CommandOpcode_T CommandOpcode =
3538     Command->V1.CommandMailbox.Common.CommandOpcode;
3539   DAC960_V1_CommandStatus_T CommandStatus = Command->V1.CommandStatus;
3540
3541   if (CommandType == DAC960_ReadCommand ||
3542       CommandType == DAC960_WriteCommand)
3543     {
3544
3545 #ifdef FORCE_RETRY_DEBUG
3546       CommandStatus = DAC960_V1_IrrecoverableDataError;
3547 #endif
3548
3549       if (CommandStatus == DAC960_V1_NormalCompletion) {
3550
3551                 if (!DAC960_ProcessCompletedRequest(Command, true))
3552                         BUG();
3553
3554       } else if (CommandStatus == DAC960_V1_IrrecoverableDataError ||
3555                 CommandStatus == DAC960_V1_BadDataEncountered)
3556         {
3557           /*
3558            * break the command down into pieces and resubmit each
3559            * piece, hoping that some of them will succeed.
3560            */
3561            DAC960_queue_partial_rw(Command);
3562            return;
3563         }
3564       else
3565         {
3566           if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3567             DAC960_V1_ReadWriteError(Command);
3568
3569          if (!DAC960_ProcessCompletedRequest(Command, false))
3570                 BUG();
3571         }
3572     }
3573   else if (CommandType == DAC960_ReadRetryCommand ||
3574            CommandType == DAC960_WriteRetryCommand)
3575     {
3576       boolean normal_completion;
3577 #ifdef FORCE_RETRY_FAILURE_DEBUG
3578       static int retry_count = 1;
3579 #endif
3580       /*
3581         Perform completion processing for the portion that was
3582         retried, and submit the next portion, if any.
3583       */
3584       normal_completion = true;
3585       if (CommandStatus != DAC960_V1_NormalCompletion) {
3586         normal_completion = false;
3587         if (CommandStatus != DAC960_V1_LogicalDriveNonexistentOrOffline)
3588             DAC960_V1_ReadWriteError(Command);
3589       }
3590
3591 #ifdef FORCE_RETRY_FAILURE_DEBUG
3592       if (!(++retry_count % 10000)) {
3593               printk("V1 error retry failure test\n");
3594               normal_completion = false;
3595               DAC960_V1_ReadWriteError(Command);
3596       }
3597 #endif
3598
3599       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
3600         DAC960_queue_partial_rw(Command);
3601         return;
3602       }
3603     }
3604
3605   else if (CommandType == DAC960_MonitoringCommand)
3606     {
3607       if (Controller->ShutdownMonitoringTimer)
3608               return;
3609       if (CommandOpcode == DAC960_V1_Enquiry)
3610         {
3611           DAC960_V1_Enquiry_T *OldEnquiry = &Controller->V1.Enquiry;
3612           DAC960_V1_Enquiry_T *NewEnquiry = Controller->V1.NewEnquiry;
3613           unsigned int OldCriticalLogicalDriveCount =
3614             OldEnquiry->CriticalLogicalDriveCount;
3615           unsigned int NewCriticalLogicalDriveCount =
3616             NewEnquiry->CriticalLogicalDriveCount;
3617           if (NewEnquiry->NumberOfLogicalDrives > Controller->LogicalDriveCount)
3618             {
3619               int LogicalDriveNumber = Controller->LogicalDriveCount - 1;
3620               while (++LogicalDriveNumber < NewEnquiry->NumberOfLogicalDrives)
3621                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3622                                 "Now Exists\n", Controller,
3623                                 LogicalDriveNumber,
3624                                 Controller->ControllerNumber,
3625                                 LogicalDriveNumber);
3626               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3627               DAC960_ComputeGenericDiskInfo(Controller);
3628             }
3629           if (NewEnquiry->NumberOfLogicalDrives < Controller->LogicalDriveCount)
3630             {
3631               int LogicalDriveNumber = NewEnquiry->NumberOfLogicalDrives - 1;
3632               while (++LogicalDriveNumber < Controller->LogicalDriveCount)
3633                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3634                                 "No Longer Exists\n", Controller,
3635                                 LogicalDriveNumber,
3636                                 Controller->ControllerNumber,
3637                                 LogicalDriveNumber);
3638               Controller->LogicalDriveCount = NewEnquiry->NumberOfLogicalDrives;
3639               DAC960_ComputeGenericDiskInfo(Controller);
3640             }
3641           if (NewEnquiry->StatusFlags.DeferredWriteError !=
3642               OldEnquiry->StatusFlags.DeferredWriteError)
3643             DAC960_Critical("Deferred Write Error Flag is now %s\n", Controller,
3644                             (NewEnquiry->StatusFlags.DeferredWriteError
3645                              ? "TRUE" : "FALSE"));
3646           if ((NewCriticalLogicalDriveCount > 0 ||
3647                NewCriticalLogicalDriveCount != OldCriticalLogicalDriveCount) ||
3648               (NewEnquiry->OfflineLogicalDriveCount > 0 ||
3649                NewEnquiry->OfflineLogicalDriveCount !=
3650                OldEnquiry->OfflineLogicalDriveCount) ||
3651               (NewEnquiry->DeadDriveCount > 0 ||
3652                NewEnquiry->DeadDriveCount !=
3653                OldEnquiry->DeadDriveCount) ||
3654               (NewEnquiry->EventLogSequenceNumber !=
3655                OldEnquiry->EventLogSequenceNumber) ||
3656               Controller->MonitoringTimerCount == 0 ||
3657               time_after_eq(jiffies, Controller->SecondaryMonitoringTime
3658                + DAC960_SecondaryMonitoringInterval))
3659             {
3660               Controller->V1.NeedLogicalDriveInformation = true;
3661               Controller->V1.NewEventLogSequenceNumber =
3662                 NewEnquiry->EventLogSequenceNumber;
3663               Controller->V1.NeedErrorTableInformation = true;
3664               Controller->V1.NeedDeviceStateInformation = true;
3665               Controller->V1.StartDeviceStateScan = true;
3666               Controller->V1.NeedBackgroundInitializationStatus =
3667                 Controller->V1.BackgroundInitializationStatusSupported;
3668               Controller->SecondaryMonitoringTime = jiffies;
3669             }
3670           if (NewEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3671               NewEnquiry->RebuildFlag
3672               == DAC960_V1_BackgroundRebuildInProgress ||
3673               OldEnquiry->RebuildFlag == DAC960_V1_StandbyRebuildInProgress ||
3674               OldEnquiry->RebuildFlag == DAC960_V1_BackgroundRebuildInProgress)
3675             {
3676               Controller->V1.NeedRebuildProgress = true;
3677               Controller->V1.RebuildProgressFirst =
3678                 (NewEnquiry->CriticalLogicalDriveCount <
3679                  OldEnquiry->CriticalLogicalDriveCount);
3680             }
3681           if (OldEnquiry->RebuildFlag == DAC960_V1_BackgroundCheckInProgress)
3682             switch (NewEnquiry->RebuildFlag)
3683               {
3684               case DAC960_V1_NoStandbyRebuildOrCheckInProgress:
3685                 DAC960_Progress("Consistency Check Completed Successfully\n",
3686                                 Controller);
3687                 break;
3688               case DAC960_V1_StandbyRebuildInProgress:
3689               case DAC960_V1_BackgroundRebuildInProgress:
3690                 break;
3691               case DAC960_V1_BackgroundCheckInProgress:
3692                 Controller->V1.NeedConsistencyCheckProgress = true;
3693                 break;
3694               case DAC960_V1_StandbyRebuildCompletedWithError:
3695                 DAC960_Progress("Consistency Check Completed with Error\n",
3696                                 Controller);
3697                 break;
3698               case DAC960_V1_BackgroundRebuildOrCheckFailed_DriveFailed:
3699                 DAC960_Progress("Consistency Check Failed - "
3700                                 "Physical Device Failed\n", Controller);
3701                 break;
3702               case DAC960_V1_BackgroundRebuildOrCheckFailed_LogicalDriveFailed:
3703                 DAC960_Progress("Consistency Check Failed - "
3704                                 "Logical Drive Failed\n", Controller);
3705                 break;
3706               case DAC960_V1_BackgroundRebuildOrCheckFailed_OtherCauses:
3707                 DAC960_Progress("Consistency Check Failed - Other Causes\n",
3708                                 Controller);
3709                 break;
3710               case DAC960_V1_BackgroundRebuildOrCheckSuccessfullyTerminated:
3711                 DAC960_Progress("Consistency Check Successfully Terminated\n",
3712                                 Controller);
3713                 break;
3714               }
3715           else if (NewEnquiry->RebuildFlag
3716                    == DAC960_V1_BackgroundCheckInProgress)
3717             Controller->V1.NeedConsistencyCheckProgress = true;
3718           Controller->MonitoringAlertMode =
3719             (NewEnquiry->CriticalLogicalDriveCount > 0 ||
3720              NewEnquiry->OfflineLogicalDriveCount > 0 ||
3721              NewEnquiry->DeadDriveCount > 0);
3722           if (NewEnquiry->RebuildFlag > DAC960_V1_BackgroundCheckInProgress)
3723             {
3724               Controller->V1.PendingRebuildFlag = NewEnquiry->RebuildFlag;
3725               Controller->V1.RebuildFlagPending = true;
3726             }
3727           memcpy(&Controller->V1.Enquiry, &Controller->V1.NewEnquiry,
3728                  sizeof(DAC960_V1_Enquiry_T));
3729         }
3730       else if (CommandOpcode == DAC960_V1_PerformEventLogOperation)
3731         {
3732           static char
3733             *DAC960_EventMessages[] =
3734                { "killed because write recovery failed",
3735                  "killed because of SCSI bus reset failure",
3736                  "killed because of double check condition",
3737                  "killed because it was removed",
3738                  "killed because of gross error on SCSI chip",
3739                  "killed because of bad tag returned from drive",
3740                  "killed because of timeout on SCSI command",
3741                  "killed because of reset SCSI command issued from system",
3742                  "killed because busy or parity error count exceeded limit",
3743                  "killed because of 'kill drive' command from system",
3744                  "killed because of selection timeout",
3745                  "killed due to SCSI phase sequence error",
3746                  "killed due to unknown status" };
3747           DAC960_V1_EventLogEntry_T *EventLogEntry =
3748                 Controller->V1.EventLogEntry;
3749           if (EventLogEntry->SequenceNumber ==
3750               Controller->V1.OldEventLogSequenceNumber)
3751             {
3752               unsigned char SenseKey = EventLogEntry->SenseKey;
3753               unsigned char AdditionalSenseCode =
3754                 EventLogEntry->AdditionalSenseCode;
3755               unsigned char AdditionalSenseCodeQualifier =
3756                 EventLogEntry->AdditionalSenseCodeQualifier;
3757               if (SenseKey == DAC960_SenseKey_VendorSpecific &&
3758                   AdditionalSenseCode == 0x80 &&
3759                   AdditionalSenseCodeQualifier <
3760                   ARRAY_SIZE(DAC960_EventMessages))
3761                 DAC960_Critical("Physical Device %d:%d %s\n", Controller,
3762                                 EventLogEntry->Channel,
3763                                 EventLogEntry->TargetID,
3764                                 DAC960_EventMessages[
3765                                   AdditionalSenseCodeQualifier]);
3766               else if (SenseKey == DAC960_SenseKey_UnitAttention &&
3767                        AdditionalSenseCode == 0x29)
3768                 {
3769                   if (Controller->MonitoringTimerCount > 0)
3770                     Controller->V1.DeviceResetCount[EventLogEntry->Channel]
3771                                                    [EventLogEntry->TargetID]++;
3772                 }
3773               else if (!(SenseKey == DAC960_SenseKey_NoSense ||
3774                          (SenseKey == DAC960_SenseKey_NotReady &&
3775                           AdditionalSenseCode == 0x04 &&
3776                           (AdditionalSenseCodeQualifier == 0x01 ||
3777                            AdditionalSenseCodeQualifier == 0x02))))
3778                 {
3779                   DAC960_Critical("Physical Device %d:%d Error Log: "
3780                                   "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
3781                                   Controller,
3782                                   EventLogEntry->Channel,
3783                                   EventLogEntry->TargetID,
3784                                   SenseKey,
3785                                   AdditionalSenseCode,
3786                                   AdditionalSenseCodeQualifier);
3787                   DAC960_Critical("Physical Device %d:%d Error Log: "
3788                                   "Information = %02X%02X%02X%02X "
3789                                   "%02X%02X%02X%02X\n",
3790                                   Controller,
3791                                   EventLogEntry->Channel,
3792                                   EventLogEntry->TargetID,
3793                                   EventLogEntry->Information[0],
3794                                   EventLogEntry->Information[1],
3795                                   EventLogEntry->Information[2],
3796                                   EventLogEntry->Information[3],
3797                                   EventLogEntry->CommandSpecificInformation[0],
3798                                   EventLogEntry->CommandSpecificInformation[1],
3799                                   EventLogEntry->CommandSpecificInformation[2],
3800                                   EventLogEntry->CommandSpecificInformation[3]);
3801                 }
3802             }
3803           Controller->V1.OldEventLogSequenceNumber++;
3804         }
3805       else if (CommandOpcode == DAC960_V1_GetErrorTable)
3806         {
3807           DAC960_V1_ErrorTable_T *OldErrorTable = &Controller->V1.ErrorTable;
3808           DAC960_V1_ErrorTable_T *NewErrorTable = Controller->V1.NewErrorTable;
3809           int Channel, TargetID;
3810           for (Channel = 0; Channel < Controller->Channels; Channel++)
3811             for (TargetID = 0; TargetID < Controller->Targets; TargetID++)
3812               {
3813                 DAC960_V1_ErrorTableEntry_T *NewErrorEntry =
3814                   &NewErrorTable->ErrorTableEntries[Channel][TargetID];
3815                 DAC960_V1_ErrorTableEntry_T *OldErrorEntry =
3816                   &OldErrorTable->ErrorTableEntries[Channel][TargetID];
3817                 if ((NewErrorEntry->ParityErrorCount !=
3818                      OldErrorEntry->ParityErrorCount) ||
3819                     (NewErrorEntry->SoftErrorCount !=
3820                      OldErrorEntry->SoftErrorCount) ||
3821                     (NewErrorEntry->HardErrorCount !=
3822                      OldErrorEntry->HardErrorCount) ||
3823                     (NewErrorEntry->MiscErrorCount !=
3824                      OldErrorEntry->MiscErrorCount))
3825                   DAC960_Critical("Physical Device %d:%d Errors: "
3826                                   "Parity = %d, Soft = %d, "
3827                                   "Hard = %d, Misc = %d\n",
3828                                   Controller, Channel, TargetID,
3829                                   NewErrorEntry->ParityErrorCount,
3830                                   NewErrorEntry->SoftErrorCount,
3831                                   NewErrorEntry->HardErrorCount,
3832                                   NewErrorEntry->MiscErrorCount);
3833               }
3834           memcpy(&Controller->V1.ErrorTable, Controller->V1.NewErrorTable,
3835                  sizeof(DAC960_V1_ErrorTable_T));
3836         }
3837       else if (CommandOpcode == DAC960_V1_GetDeviceState)
3838         {
3839           DAC960_V1_DeviceState_T *OldDeviceState =
3840             &Controller->V1.DeviceState[Controller->V1.DeviceStateChannel]
3841                                        [Controller->V1.DeviceStateTargetID];
3842           DAC960_V1_DeviceState_T *NewDeviceState =
3843             Controller->V1.NewDeviceState;
3844           if (NewDeviceState->DeviceState != OldDeviceState->DeviceState)
3845             DAC960_Critical("Physical Device %d:%d is now %s\n", Controller,
3846                             Controller->V1.DeviceStateChannel,
3847                             Controller->V1.DeviceStateTargetID,
3848                             (NewDeviceState->DeviceState
3849                              == DAC960_V1_Device_Dead
3850                              ? "DEAD"
3851                              : NewDeviceState->DeviceState
3852                                == DAC960_V1_Device_WriteOnly
3853                                ? "WRITE-ONLY"
3854                                : NewDeviceState->DeviceState
3855                                  == DAC960_V1_Device_Online
3856                                  ? "ONLINE" : "STANDBY"));
3857           if (OldDeviceState->DeviceState == DAC960_V1_Device_Dead &&
3858               NewDeviceState->DeviceState != DAC960_V1_Device_Dead)
3859             {
3860               Controller->V1.NeedDeviceInquiryInformation = true;
3861               Controller->V1.NeedDeviceSerialNumberInformation = true;
3862               Controller->V1.DeviceResetCount
3863                              [Controller->V1.DeviceStateChannel]
3864                              [Controller->V1.DeviceStateTargetID] = 0;
3865             }
3866           memcpy(OldDeviceState, NewDeviceState,
3867                  sizeof(DAC960_V1_DeviceState_T));
3868         }
3869       else if (CommandOpcode == DAC960_V1_GetLogicalDriveInformation)
3870         {
3871           int LogicalDriveNumber;
3872           for (LogicalDriveNumber = 0;
3873                LogicalDriveNumber < Controller->LogicalDriveCount;
3874                LogicalDriveNumber++)
3875             {
3876               DAC960_V1_LogicalDriveInformation_T *OldLogicalDriveInformation =
3877                 &Controller->V1.LogicalDriveInformation[LogicalDriveNumber];
3878               DAC960_V1_LogicalDriveInformation_T *NewLogicalDriveInformation =
3879                 &(*Controller->V1.NewLogicalDriveInformation)[LogicalDriveNumber];
3880               if (NewLogicalDriveInformation->LogicalDriveState !=
3881                   OldLogicalDriveInformation->LogicalDriveState)
3882                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3883                                 "is now %s\n", Controller,
3884                                 LogicalDriveNumber,
3885                                 Controller->ControllerNumber,
3886                                 LogicalDriveNumber,
3887                                 (NewLogicalDriveInformation->LogicalDriveState
3888                                  == DAC960_V1_LogicalDrive_Online
3889                                  ? "ONLINE"
3890                                  : NewLogicalDriveInformation->LogicalDriveState
3891                                    == DAC960_V1_LogicalDrive_Critical
3892                                    ? "CRITICAL" : "OFFLINE"));
3893               if (NewLogicalDriveInformation->WriteBack !=
3894                   OldLogicalDriveInformation->WriteBack)
3895                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
3896                                 "is now %s\n", Controller,
3897                                 LogicalDriveNumber,
3898                                 Controller->ControllerNumber,
3899                                 LogicalDriveNumber,
3900                                 (NewLogicalDriveInformation->WriteBack
3901                                  ? "WRITE BACK" : "WRITE THRU"));
3902             }
3903           memcpy(&Controller->V1.LogicalDriveInformation,
3904                  Controller->V1.NewLogicalDriveInformation,
3905                  sizeof(DAC960_V1_LogicalDriveInformationArray_T));
3906         }
3907       else if (CommandOpcode == DAC960_V1_GetRebuildProgress)
3908         {
3909           unsigned int LogicalDriveNumber =
3910             Controller->V1.RebuildProgress->LogicalDriveNumber;
3911           unsigned int LogicalDriveSize =
3912             Controller->V1.RebuildProgress->LogicalDriveSize;
3913           unsigned int BlocksCompleted =
3914             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3915           if (CommandStatus == DAC960_V1_NoRebuildOrCheckInProgress &&
3916               Controller->V1.LastRebuildStatus == DAC960_V1_NormalCompletion)
3917             CommandStatus = DAC960_V1_RebuildSuccessful;
3918           switch (CommandStatus)
3919             {
3920             case DAC960_V1_NormalCompletion:
3921               Controller->EphemeralProgressMessage = true;
3922               DAC960_Progress("Rebuild in Progress: "
3923                               "Logical Drive %d (/dev/rd/c%dd%d) "
3924                               "%d%% completed\n",
3925                               Controller, LogicalDriveNumber,
3926                               Controller->ControllerNumber,
3927                               LogicalDriveNumber,
3928                               (100 * (BlocksCompleted >> 7))
3929                               / (LogicalDriveSize >> 7));
3930               Controller->EphemeralProgressMessage = false;
3931               break;
3932             case DAC960_V1_RebuildFailed_LogicalDriveFailure:
3933               DAC960_Progress("Rebuild Failed due to "
3934                               "Logical Drive Failure\n", Controller);
3935               break;
3936             case DAC960_V1_RebuildFailed_BadBlocksOnOther:
3937               DAC960_Progress("Rebuild Failed due to "
3938                               "Bad Blocks on Other Drives\n", Controller);
3939               break;
3940             case DAC960_V1_RebuildFailed_NewDriveFailed:
3941               DAC960_Progress("Rebuild Failed due to "
3942                               "Failure of Drive Being Rebuilt\n", Controller);
3943               break;
3944             case DAC960_V1_NoRebuildOrCheckInProgress:
3945               break;
3946             case DAC960_V1_RebuildSuccessful:
3947               DAC960_Progress("Rebuild Completed Successfully\n", Controller);
3948               break;
3949             case DAC960_V1_RebuildSuccessfullyTerminated:
3950               DAC960_Progress("Rebuild Successfully Terminated\n", Controller);
3951               break;
3952             }
3953           Controller->V1.LastRebuildStatus = CommandStatus;
3954           if (CommandType != DAC960_MonitoringCommand &&
3955               Controller->V1.RebuildStatusPending)
3956             {
3957               Command->V1.CommandStatus = Controller->V1.PendingRebuildStatus;
3958               Controller->V1.RebuildStatusPending = false;
3959             }
3960           else if (CommandType == DAC960_MonitoringCommand &&
3961                    CommandStatus != DAC960_V1_NormalCompletion &&
3962                    CommandStatus != DAC960_V1_NoRebuildOrCheckInProgress)
3963             {
3964               Controller->V1.PendingRebuildStatus = CommandStatus;
3965               Controller->V1.RebuildStatusPending = true;
3966             }
3967         }
3968       else if (CommandOpcode == DAC960_V1_RebuildStat)
3969         {
3970           unsigned int LogicalDriveNumber =
3971             Controller->V1.RebuildProgress->LogicalDriveNumber;
3972           unsigned int LogicalDriveSize =
3973             Controller->V1.RebuildProgress->LogicalDriveSize;
3974           unsigned int BlocksCompleted =
3975             LogicalDriveSize - Controller->V1.RebuildProgress->RemainingBlocks;
3976           if (CommandStatus == DAC960_V1_NormalCompletion)
3977             {
3978               Controller->EphemeralProgressMessage = true;
3979               DAC960_Progress("Consistency Check in Progress: "
3980                               "Logical Drive %d (/dev/rd/c%dd%d) "
3981                               "%d%% completed\n",
3982                               Controller, LogicalDriveNumber,
3983                               Controller->ControllerNumber,
3984                               LogicalDriveNumber,
3985                               (100 * (BlocksCompleted >> 7))
3986                               / (LogicalDriveSize >> 7));
3987               Controller->EphemeralProgressMessage = false;
3988             }
3989         }
3990       else if (CommandOpcode == DAC960_V1_BackgroundInitializationControl)
3991         {
3992           unsigned int LogicalDriveNumber =
3993             Controller->V1.BackgroundInitializationStatus->LogicalDriveNumber;
3994           unsigned int LogicalDriveSize =
3995             Controller->V1.BackgroundInitializationStatus->LogicalDriveSize;
3996           unsigned int BlocksCompleted =
3997             Controller->V1.BackgroundInitializationStatus->BlocksCompleted;
3998           switch (CommandStatus)
3999             {
4000             case DAC960_V1_NormalCompletion:
4001               switch (Controller->V1.BackgroundInitializationStatus->Status)
4002                 {
4003                 case DAC960_V1_BackgroundInitializationInvalid:
4004                   break;
4005                 case DAC960_V1_BackgroundInitializationStarted:
4006                   DAC960_Progress("Background Initialization Started\n",
4007                                   Controller);
4008                   break;
4009                 case DAC960_V1_BackgroundInitializationInProgress:
4010                   if (BlocksCompleted ==
4011                       Controller->V1.LastBackgroundInitializationStatus.
4012                                 BlocksCompleted &&
4013                       LogicalDriveNumber ==
4014                       Controller->V1.LastBackgroundInitializationStatus.
4015                                 LogicalDriveNumber)
4016                     break;
4017                   Controller->EphemeralProgressMessage = true;
4018                   DAC960_Progress("Background Initialization in Progress: "
4019                                   "Logical Drive %d (/dev/rd/c%dd%d) "
4020                                   "%d%% completed\n",
4021                                   Controller, LogicalDriveNumber,
4022                                   Controller->ControllerNumber,
4023                                   LogicalDriveNumber,
4024                                   (100 * (BlocksCompleted >> 7))
4025                                   / (LogicalDriveSize >> 7));
4026                   Controller->EphemeralProgressMessage = false;
4027                   break;
4028                 case DAC960_V1_BackgroundInitializationSuspended:
4029                   DAC960_Progress("Background Initialization Suspended\n",
4030                                   Controller);
4031                   break;
4032                 case DAC960_V1_BackgroundInitializationCancelled:
4033                   DAC960_Progress("Background Initialization Cancelled\n",
4034                                   Controller);
4035                   break;
4036                 }
4037               memcpy(&Controller->V1.LastBackgroundInitializationStatus,
4038                      Controller->V1.BackgroundInitializationStatus,
4039                      sizeof(DAC960_V1_BackgroundInitializationStatus_T));
4040               break;
4041             case DAC960_V1_BackgroundInitSuccessful:
4042               if (Controller->V1.BackgroundInitializationStatus->Status ==
4043                   DAC960_V1_BackgroundInitializationInProgress)
4044                 DAC960_Progress("Background Initialization "
4045                                 "Completed Successfully\n", Controller);
4046               Controller->V1.BackgroundInitializationStatus->Status =
4047                 DAC960_V1_BackgroundInitializationInvalid;
4048               break;
4049             case DAC960_V1_BackgroundInitAborted:
4050               if (Controller->V1.BackgroundInitializationStatus->Status ==
4051                   DAC960_V1_BackgroundInitializationInProgress)
4052                 DAC960_Progress("Background Initialization Aborted\n",
4053                                 Controller);
4054               Controller->V1.BackgroundInitializationStatus->Status =
4055                 DAC960_V1_BackgroundInitializationInvalid;
4056               break;
4057             case DAC960_V1_NoBackgroundInitInProgress:
4058               break;
4059             }
4060         }
4061       else if (CommandOpcode == DAC960_V1_DCDB)
4062         {
4063            /*
4064              This is a bit ugly.
4065
4066              The InquiryStandardData and
4067              the InquiryUntitSerialNumber information
4068              retrieval operations BOTH use the DAC960_V1_DCDB
4069              commands.  the test above can't distinguish between
4070              these two cases.
4071
4072              Instead, we rely on the order of code later in this
4073              function to ensure that DeviceInquiryInformation commands
4074              are submitted before DeviceSerialNumber commands.
4075            */
4076            if (Controller->V1.NeedDeviceInquiryInformation)
4077              {
4078                 DAC960_SCSI_Inquiry_T *InquiryStandardData =
4079                         &Controller->V1.InquiryStandardData
4080                                 [Controller->V1.DeviceStateChannel]
4081                                 [Controller->V1.DeviceStateTargetID];
4082                 if (CommandStatus != DAC960_V1_NormalCompletion)
4083                    {
4084                         memset(InquiryStandardData, 0,
4085                                 sizeof(DAC960_SCSI_Inquiry_T));
4086                         InquiryStandardData->PeripheralDeviceType = 0x1F;
4087                     }
4088                  else
4089                         memcpy(InquiryStandardData,
4090                                 Controller->V1.NewInquiryStandardData,
4091                                 sizeof(DAC960_SCSI_Inquiry_T));
4092                  Controller->V1.NeedDeviceInquiryInformation = false;
4093               }
4094            else if (Controller->V1.NeedDeviceSerialNumberInformation)
4095               {
4096                 DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4097                   &Controller->V1.InquiryUnitSerialNumber
4098                                 [Controller->V1.DeviceStateChannel]
4099                                 [Controller->V1.DeviceStateTargetID];
4100                  if (CommandStatus != DAC960_V1_NormalCompletion)
4101                    {
4102                         memset(InquiryUnitSerialNumber, 0,
4103                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4104                         InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4105                     }
4106                   else
4107                         memcpy(InquiryUnitSerialNumber,
4108                                 Controller->V1.NewInquiryUnitSerialNumber,
4109                                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4110               Controller->V1.NeedDeviceSerialNumberInformation = false;
4111              }
4112         }
4113       /*
4114         Begin submitting new monitoring commands.
4115        */
4116       if (Controller->V1.NewEventLogSequenceNumber
4117           - Controller->V1.OldEventLogSequenceNumber > 0)
4118         {
4119           Command->V1.CommandMailbox.Type3E.CommandOpcode =
4120             DAC960_V1_PerformEventLogOperation;
4121           Command->V1.CommandMailbox.Type3E.OperationType =
4122             DAC960_V1_GetEventLogEntry;
4123           Command->V1.CommandMailbox.Type3E.OperationQualifier = 1;
4124           Command->V1.CommandMailbox.Type3E.SequenceNumber =
4125             Controller->V1.OldEventLogSequenceNumber;
4126           Command->V1.CommandMailbox.Type3E.BusAddress =
4127                 Controller->V1.EventLogEntryDMA;
4128           DAC960_QueueCommand(Command);
4129           return;
4130         }
4131       if (Controller->V1.NeedErrorTableInformation)
4132         {
4133           Controller->V1.NeedErrorTableInformation = false;
4134           Command->V1.CommandMailbox.Type3.CommandOpcode =
4135             DAC960_V1_GetErrorTable;
4136           Command->V1.CommandMailbox.Type3.BusAddress =
4137                 Controller->V1.NewErrorTableDMA;
4138           DAC960_QueueCommand(Command);
4139           return;
4140         }
4141       if (Controller->V1.NeedRebuildProgress &&
4142           Controller->V1.RebuildProgressFirst)
4143         {
4144           Controller->V1.NeedRebuildProgress = false;
4145           Command->V1.CommandMailbox.Type3.CommandOpcode =
4146             DAC960_V1_GetRebuildProgress;
4147           Command->V1.CommandMailbox.Type3.BusAddress =
4148             Controller->V1.RebuildProgressDMA;
4149           DAC960_QueueCommand(Command);
4150           return;
4151         }
4152       if (Controller->V1.NeedDeviceStateInformation)
4153         {
4154           if (Controller->V1.NeedDeviceInquiryInformation)
4155             {
4156               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4157               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4158
4159               dma_addr_t NewInquiryStandardDataDMA =
4160                 Controller->V1.NewInquiryStandardDataDMA;
4161
4162               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4163               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4164               DCDB->Channel = Controller->V1.DeviceStateChannel;
4165               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4166               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4167               DCDB->EarlyStatus = false;
4168               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4169               DCDB->NoAutomaticRequestSense = false;
4170               DCDB->DisconnectPermitted = true;
4171               DCDB->TransferLength = sizeof(DAC960_SCSI_Inquiry_T);
4172               DCDB->BusAddress = NewInquiryStandardDataDMA;
4173               DCDB->CDBLength = 6;
4174               DCDB->TransferLengthHigh4 = 0;
4175               DCDB->SenseLength = sizeof(DCDB->SenseData);
4176               DCDB->CDB[0] = 0x12; /* INQUIRY */
4177               DCDB->CDB[1] = 0; /* EVPD = 0 */
4178               DCDB->CDB[2] = 0; /* Page Code */
4179               DCDB->CDB[3] = 0; /* Reserved */
4180               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_T);
4181               DCDB->CDB[5] = 0; /* Control */
4182               DAC960_QueueCommand(Command);
4183               return;
4184             }
4185           if (Controller->V1.NeedDeviceSerialNumberInformation)
4186             {
4187               DAC960_V1_DCDB_T *DCDB = Controller->V1.MonitoringDCDB;
4188               dma_addr_t DCDB_DMA = Controller->V1.MonitoringDCDB_DMA;
4189               dma_addr_t NewInquiryUnitSerialNumberDMA =
4190                         Controller->V1.NewInquiryUnitSerialNumberDMA;
4191
4192               Command->V1.CommandMailbox.Type3.CommandOpcode = DAC960_V1_DCDB;
4193               Command->V1.CommandMailbox.Type3.BusAddress = DCDB_DMA;
4194               DCDB->Channel = Controller->V1.DeviceStateChannel;
4195               DCDB->TargetID = Controller->V1.DeviceStateTargetID;
4196               DCDB->Direction = DAC960_V1_DCDB_DataTransferDeviceToSystem;
4197               DCDB->EarlyStatus = false;
4198               DCDB->Timeout = DAC960_V1_DCDB_Timeout_10_seconds;
4199               DCDB->NoAutomaticRequestSense = false;
4200               DCDB->DisconnectPermitted = true;
4201               DCDB->TransferLength =
4202                 sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4203               DCDB->BusAddress = NewInquiryUnitSerialNumberDMA;
4204               DCDB->CDBLength = 6;
4205               DCDB->TransferLengthHigh4 = 0;
4206               DCDB->SenseLength = sizeof(DCDB->SenseData);
4207               DCDB->CDB[0] = 0x12; /* INQUIRY */
4208               DCDB->CDB[1] = 1; /* EVPD = 1 */
4209               DCDB->CDB[2] = 0x80; /* Page Code */
4210               DCDB->CDB[3] = 0; /* Reserved */
4211               DCDB->CDB[4] = sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T);
4212               DCDB->CDB[5] = 0; /* Control */
4213               DAC960_QueueCommand(Command);
4214               return;
4215             }
4216           if (Controller->V1.StartDeviceStateScan)
4217             {
4218               Controller->V1.DeviceStateChannel = 0;
4219               Controller->V1.DeviceStateTargetID = 0;
4220               Controller->V1.StartDeviceStateScan = false;
4221             }
4222           else if (++Controller->V1.DeviceStateTargetID == Controller->Targets)
4223             {
4224               Controller->V1.DeviceStateChannel++;
4225               Controller->V1.DeviceStateTargetID = 0;
4226             }
4227           if (Controller->V1.DeviceStateChannel < Controller->Channels)
4228             {
4229               Controller->V1.NewDeviceState->DeviceState =
4230                 DAC960_V1_Device_Dead;
4231               Command->V1.CommandMailbox.Type3D.CommandOpcode =
4232                 DAC960_V1_GetDeviceState;
4233               Command->V1.CommandMailbox.Type3D.Channel =
4234                 Controller->V1.DeviceStateChannel;
4235               Command->V1.CommandMailbox.Type3D.TargetID =
4236                 Controller->V1.DeviceStateTargetID;
4237               Command->V1.CommandMailbox.Type3D.BusAddress =
4238                 Controller->V1.NewDeviceStateDMA;
4239               DAC960_QueueCommand(Command);
4240               return;
4241             }
4242           Controller->V1.NeedDeviceStateInformation = false;
4243         }
4244       if (Controller->V1.NeedLogicalDriveInformation)
4245         {
4246           Controller->V1.NeedLogicalDriveInformation = false;
4247           Command->V1.CommandMailbox.Type3.CommandOpcode =
4248             DAC960_V1_GetLogicalDriveInformation;
4249           Command->V1.CommandMailbox.Type3.BusAddress =
4250             Controller->V1.NewLogicalDriveInformationDMA;
4251           DAC960_QueueCommand(Command);
4252           return;
4253         }
4254       if (Controller->V1.NeedRebuildProgress)
4255         {
4256           Controller->V1.NeedRebuildProgress = false;
4257           Command->V1.CommandMailbox.Type3.CommandOpcode =
4258             DAC960_V1_GetRebuildProgress;
4259           Command->V1.CommandMailbox.Type3.BusAddress =
4260                 Controller->V1.RebuildProgressDMA;
4261           DAC960_QueueCommand(Command);
4262           return;
4263         }
4264       if (Controller->V1.NeedConsistencyCheckProgress)
4265         {
4266           Controller->V1.NeedConsistencyCheckProgress = false;
4267           Command->V1.CommandMailbox.Type3.CommandOpcode =
4268             DAC960_V1_RebuildStat;
4269           Command->V1.CommandMailbox.Type3.BusAddress =
4270             Controller->V1.RebuildProgressDMA;
4271           DAC960_QueueCommand(Command);
4272           return;
4273         }
4274       if (Controller->V1.NeedBackgroundInitializationStatus)
4275         {
4276           Controller->V1.NeedBackgroundInitializationStatus = false;
4277           Command->V1.CommandMailbox.Type3B.CommandOpcode =
4278             DAC960_V1_BackgroundInitializationControl;
4279           Command->V1.CommandMailbox.Type3B.CommandOpcode2 = 0x20;
4280           Command->V1.CommandMailbox.Type3B.BusAddress =
4281             Controller->V1.BackgroundInitializationStatusDMA;
4282           DAC960_QueueCommand(Command);
4283           return;
4284         }
4285       Controller->MonitoringTimerCount++;
4286       Controller->MonitoringTimer.expires =
4287         jiffies + DAC960_MonitoringTimerInterval;
4288         add_timer(&Controller->MonitoringTimer);
4289     }
4290   if (CommandType == DAC960_ImmediateCommand)
4291     {
4292       complete(Command->Completion);
4293       Command->Completion = NULL;
4294       return;
4295     }
4296   if (CommandType == DAC960_QueuedCommand)
4297     {
4298       DAC960_V1_KernelCommand_T *KernelCommand = Command->V1.KernelCommand;
4299       KernelCommand->CommandStatus = Command->V1.CommandStatus;
4300       Command->V1.KernelCommand = NULL;
4301       if (CommandOpcode == DAC960_V1_DCDB)
4302         Controller->V1.DirectCommandActive[KernelCommand->DCDB->Channel]
4303                                           [KernelCommand->DCDB->TargetID] =
4304           false;
4305       DAC960_DeallocateCommand(Command);
4306       KernelCommand->CompletionFunction(KernelCommand);
4307       return;
4308     }
4309   /*
4310     Queue a Status Monitoring Command to the Controller using the just
4311     completed Command if one was deferred previously due to lack of a
4312     free Command when the Monitoring Timer Function was called.
4313   */
4314   if (Controller->MonitoringCommandDeferred)
4315     {
4316       Controller->MonitoringCommandDeferred = false;
4317       DAC960_V1_QueueMonitoringCommand(Command);
4318       return;
4319     }
4320   /*
4321     Deallocate the Command.
4322   */
4323   DAC960_DeallocateCommand(Command);
4324   /*
4325     Wake up any processes waiting on a free Command.
4326   */
4327   wake_up(&Controller->CommandWaitQueue);
4328 }
4329
4330
4331 /*
4332   DAC960_V2_ReadWriteError prints an appropriate error message for Command
4333   when an error occurs on a Read or Write operation.
4334 */
4335
4336 static void DAC960_V2_ReadWriteError(DAC960_Command_T *Command)
4337 {
4338   DAC960_Controller_T *Controller = Command->Controller;
4339   unsigned char *SenseErrors[] = { "NO SENSE", "RECOVERED ERROR",
4340                                    "NOT READY", "MEDIUM ERROR",
4341                                    "HARDWARE ERROR", "ILLEGAL REQUEST",
4342                                    "UNIT ATTENTION", "DATA PROTECT",
4343                                    "BLANK CHECK", "VENDOR-SPECIFIC",
4344                                    "COPY ABORTED", "ABORTED COMMAND",
4345                                    "EQUAL", "VOLUME OVERFLOW",
4346                                    "MISCOMPARE", "RESERVED" };
4347   unsigned char *CommandName = "UNKNOWN";
4348   switch (Command->CommandType)
4349     {
4350     case DAC960_ReadCommand:
4351     case DAC960_ReadRetryCommand:
4352       CommandName = "READ";
4353       break;
4354     case DAC960_WriteCommand:
4355     case DAC960_WriteRetryCommand:
4356       CommandName = "WRITE";
4357       break;
4358     case DAC960_MonitoringCommand:
4359     case DAC960_ImmediateCommand:
4360     case DAC960_QueuedCommand:
4361       break;
4362     }
4363   DAC960_Error("Error Condition %s on %s:\n", Controller,
4364                SenseErrors[Command->V2.RequestSense->SenseKey], CommandName);
4365   DAC960_Error("  /dev/rd/c%dd%d:   absolute blocks %u..%u\n",
4366                Controller, Controller->ControllerNumber,
4367                Command->LogicalDriveNumber, Command->BlockNumber,
4368                Command->BlockNumber + Command->BlockCount - 1);
4369 }
4370
4371
4372 /*
4373   DAC960_V2_ReportEvent prints an appropriate message when a Controller Event
4374   occurs.
4375 */
4376
4377 static void DAC960_V2_ReportEvent(DAC960_Controller_T *Controller,
4378                                   DAC960_V2_Event_T *Event)
4379 {
4380   DAC960_SCSI_RequestSense_T *RequestSense =
4381     (DAC960_SCSI_RequestSense_T *) &Event->RequestSenseData;
4382   unsigned char MessageBuffer[DAC960_LineBufferSize];
4383   static struct { int EventCode; unsigned char *EventMessage; } EventList[] =
4384     { /* Physical Device Events (0x0000 - 0x007F) */
4385       { 0x0001, "P Online" },
4386       { 0x0002, "P Standby" },
4387       { 0x0005, "P Automatic Rebuild Started" },
4388       { 0x0006, "P Manual Rebuild Started" },
4389       { 0x0007, "P Rebuild Completed" },
4390       { 0x0008, "P Rebuild Cancelled" },
4391       { 0x0009, "P Rebuild Failed for Unknown Reasons" },
4392       { 0x000A, "P Rebuild Failed due to New Physical Device" },
4393       { 0x000B, "P Rebuild Failed due to Logical Drive Failure" },
4394       { 0x000C, "S Offline" },
4395       { 0x000D, "P Found" },
4396       { 0x000E, "P Removed" },
4397       { 0x000F, "P Unconfigured" },
4398       { 0x0010, "P Expand Capacity Started" },
4399       { 0x0011, "P Expand Capacity Completed" },
4400       { 0x0012, "P Expand Capacity Failed" },
4401       { 0x0013, "P Command Timed Out" },
4402       { 0x0014, "P Command Aborted" },
4403       { 0x0015, "P Command Retried" },
4404       { 0x0016, "P Parity Error" },
4405       { 0x0017, "P Soft Error" },
4406       { 0x0018, "P Miscellaneous Error" },
4407       { 0x0019, "P Reset" },
4408       { 0x001A, "P Active Spare Found" },
4409       { 0x001B, "P Warm Spare Found" },
4410       { 0x001C, "S Sense Data Received" },
4411       { 0x001D, "P Initialization Started" },
4412       { 0x001E, "P Initialization Completed" },
4413       { 0x001F, "P Initialization Failed" },
4414       { 0x0020, "P Initialization Cancelled" },
4415       { 0x0021, "P Failed because Write Recovery Failed" },
4416       { 0x0022, "P Failed because SCSI Bus Reset Failed" },
4417       { 0x0023, "P Failed because of Double Check Condition" },
4418       { 0x0024, "P Failed because Device Cannot Be Accessed" },
4419       { 0x0025, "P Failed because of Gross Error on SCSI Processor" },
4420       { 0x0026, "P Failed because of Bad Tag from Device" },
4421       { 0x0027, "P Failed because of Command Timeout" },
4422       { 0x0028, "P Failed because of System Reset" },
4423       { 0x0029, "P Failed because of Busy Status or Parity Error" },
4424       { 0x002A, "P Failed because Host Set Device to Failed State" },
4425       { 0x002B, "P Failed because of Selection Timeout" },
4426       { 0x002C, "P Failed because of SCSI Bus Phase Error" },
4427       { 0x002D, "P Failed because Device Returned Unknown Status" },
4428       { 0x002E, "P Failed because Device Not Ready" },
4429       { 0x002F, "P Failed because Device Not Found at Startup" },
4430       { 0x0030, "P Failed because COD Write Operation Failed" },
4431       { 0x0031, "P Failed because BDT Write Operation Failed" },
4432       { 0x0039, "P Missing at Startup" },
4433       { 0x003A, "P Start Rebuild Failed due to Physical Drive Too Small" },
4434       { 0x003C, "P Temporarily Offline Device Automatically Made Online" },
4435       { 0x003D, "P Standby Rebuild Started" },
4436       /* Logical Device Events (0x0080 - 0x00FF) */
4437       { 0x0080, "M Consistency Check Started" },
4438       { 0x0081, "M Consistency Check Completed" },
4439       { 0x0082, "M Consistency Check Cancelled" },
4440       { 0x0083, "M Consistency Check Completed With Errors" },
4441       { 0x0084, "M Consistency Check Failed due to Logical Drive Failure" },
4442       { 0x0085, "M Consistency Check Failed due to Physical Device Failure" },
4443       { 0x0086, "L Offline" },
4444       { 0x0087, "L Critical" },
4445       { 0x0088, "L Online" },
4446       { 0x0089, "M Automatic Rebuild Started" },
4447       { 0x008A, "M Manual Rebuild Started" },
4448       { 0x008B, "M Rebuild Completed" },
4449       { 0x008C, "M Rebuild Cancelled" },
4450       { 0x008D, "M Rebuild Failed for Unknown Reasons" },
4451       { 0x008E, "M Rebuild Failed due to New Physical Device" },
4452       { 0x008F, "M Rebuild Failed due to Logical Drive Failure" },
4453       { 0x0090, "M Initialization Started" },
4454       { 0x0091, "M Initialization Completed" },
4455       { 0x0092, "M Initialization Cancelled" },
4456       { 0x0093, "M Initialization Failed" },
4457       { 0x0094, "L Found" },
4458       { 0x0095, "L Deleted" },
4459       { 0x0096, "M Expand Capacity Started" },
4460       { 0x0097, "M Expand Capacity Completed" },
4461       { 0x0098, "M Expand Capacity Failed" },
4462       { 0x0099, "L Bad Block Found" },
4463       { 0x009A, "L Size Changed" },
4464       { 0x009B, "L Type Changed" },
4465       { 0x009C, "L Bad Data Block Found" },
4466       { 0x009E, "L Read of Data Block in BDT" },
4467       { 0x009F, "L Write Back Data for Disk Block Lost" },
4468       { 0x00A0, "L Temporarily Offline RAID-5/3 Drive Made Online" },
4469       { 0x00A1, "L Temporarily Offline RAID-6/1/0/7 Drive Made Online" },
4470       { 0x00A2, "L Standby Rebuild Started" },
4471       /* Fault Management Events (0x0100 - 0x017F) */
4472       { 0x0140, "E Fan %d Failed" },
4473       { 0x0141, "E Fan %d OK" },
4474       { 0x0142, "E Fan %d Not Present" },
4475       { 0x0143, "E Power Supply %d Failed" },
4476       { 0x0144, "E Power Supply %d OK" },
4477       { 0x0145, "E Power Supply %d Not Present" },
4478       { 0x0146, "E Temperature Sensor %d Temperature Exceeds Safe Limit" },
4479       { 0x0147, "E Temperature Sensor %d Temperature Exceeds Working Limit" },
4480       { 0x0148, "E Temperature Sensor %d Temperature Normal" },
4481       { 0x0149, "E Temperature Sensor %d Not Present" },
4482       { 0x014A, "E Enclosure Management Unit %d Access Critical" },
4483       { 0x014B, "E Enclosure Management Unit %d Access OK" },
4484       { 0x014C, "E Enclosure Management Unit %d Access Offline" },
4485       /* Controller Events (0x0180 - 0x01FF) */
4486       { 0x0181, "C Cache Write Back Error" },
4487       { 0x0188, "C Battery Backup Unit Found" },
4488       { 0x0189, "C Battery Backup Unit Charge Level Low" },
4489       { 0x018A, "C Battery Backup Unit Charge Level OK" },
4490       { 0x0193, "C Installation Aborted" },
4491       { 0x0195, "C Battery Backup Unit Physically Removed" },
4492       { 0x0196, "C Memory Error During Warm Boot" },
4493       { 0x019E, "C Memory Soft ECC Error Corrected" },
4494       { 0x019F, "C Memory Hard ECC Error Corrected" },
4495       { 0x01A2, "C Battery Backup Unit Failed" },
4496       { 0x01AB, "C Mirror Race Recovery Failed" },
4497       { 0x01AC, "C Mirror Race on Critical Drive" },
4498       /* Controller Internal Processor Events */
4499       { 0x0380, "C Internal Controller Hung" },
4500       { 0x0381, "C Internal Controller Firmware Breakpoint" },
4501       { 0x0390, "C Internal Controller i960 Processor Specific Error" },
4502       { 0x03A0, "C Internal Controller StrongARM Processor Specific Error" },
4503       { 0, "" } };
4504   int EventListIndex = 0, EventCode;
4505   unsigned char EventType, *EventMessage;
4506   if (Event->EventCode == 0x1C &&
4507       RequestSense->SenseKey == DAC960_SenseKey_VendorSpecific &&
4508       (RequestSense->AdditionalSenseCode == 0x80 ||
4509        RequestSense->AdditionalSenseCode == 0x81))
4510     Event->EventCode = ((RequestSense->AdditionalSenseCode - 0x80) << 8) |
4511                        RequestSense->AdditionalSenseCodeQualifier;
4512   while (true)
4513     {
4514       EventCode = EventList[EventListIndex].EventCode;
4515       if (EventCode == Event->EventCode || EventCode == 0) break;
4516       EventListIndex++;
4517     }
4518   EventType = EventList[EventListIndex].EventMessage[0];
4519   EventMessage = &EventList[EventListIndex].EventMessage[2];
4520   if (EventCode == 0)
4521     {
4522       DAC960_Critical("Unknown Controller Event Code %04X\n",
4523                       Controller, Event->EventCode);
4524       return;
4525     }
4526   switch (EventType)
4527     {
4528     case 'P':
4529       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4530                       Event->Channel, Event->TargetID, EventMessage);
4531       break;
4532     case 'L':
4533       DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4534                       Event->LogicalUnit, Controller->ControllerNumber,
4535                       Event->LogicalUnit, EventMessage);
4536       break;
4537     case 'M':
4538       DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) %s\n", Controller,
4539                       Event->LogicalUnit, Controller->ControllerNumber,
4540                       Event->LogicalUnit, EventMessage);
4541       break;
4542     case 'S':
4543       if (RequestSense->SenseKey == DAC960_SenseKey_NoSense ||
4544           (RequestSense->SenseKey == DAC960_SenseKey_NotReady &&
4545            RequestSense->AdditionalSenseCode == 0x04 &&
4546            (RequestSense->AdditionalSenseCodeQualifier == 0x01 ||
4547             RequestSense->AdditionalSenseCodeQualifier == 0x02)))
4548         break;
4549       DAC960_Critical("Physical Device %d:%d %s\n", Controller,
4550                       Event->Channel, Event->TargetID, EventMessage);
4551       DAC960_Critical("Physical Device %d:%d Request Sense: "
4552                       "Sense Key = %X, ASC = %02X, ASCQ = %02X\n",
4553                       Controller,
4554                       Event->Channel,
4555                       Event->TargetID,
4556                       RequestSense->SenseKey,
4557                       RequestSense->AdditionalSenseCode,
4558                       RequestSense->AdditionalSenseCodeQualifier);
4559       DAC960_Critical("Physical Device %d:%d Request Sense: "
4560                       "Information = %02X%02X%02X%02X "
4561                       "%02X%02X%02X%02X\n",
4562                       Controller,
4563                       Event->Channel,
4564                       Event->TargetID,
4565                       RequestSense->Information[0],
4566                       RequestSense->Information[1],
4567                       RequestSense->Information[2],
4568                       RequestSense->Information[3],
4569                       RequestSense->CommandSpecificInformation[0],
4570                       RequestSense->CommandSpecificInformation[1],
4571                       RequestSense->CommandSpecificInformation[2],
4572                       RequestSense->CommandSpecificInformation[3]);
4573       break;
4574     case 'E':
4575       if (Controller->SuppressEnclosureMessages) break;
4576       sprintf(MessageBuffer, EventMessage, Event->LogicalUnit);
4577       DAC960_Critical("Enclosure %d %s\n", Controller,
4578                       Event->TargetID, MessageBuffer);
4579       break;
4580     case 'C':
4581       DAC960_Critical("Controller %s\n", Controller, EventMessage);
4582       break;
4583     default:
4584       DAC960_Critical("Unknown Controller Event Code %04X\n",
4585                       Controller, Event->EventCode);
4586       break;
4587     }
4588 }
4589
4590
4591 /*
4592   DAC960_V2_ReportProgress prints an appropriate progress message for
4593   Logical Device Long Operations.
4594 */
4595
4596 static void DAC960_V2_ReportProgress(DAC960_Controller_T *Controller,
4597                                      unsigned char *MessageString,
4598                                      unsigned int LogicalDeviceNumber,
4599                                      unsigned long BlocksCompleted,
4600                                      unsigned long LogicalDeviceSize)
4601 {
4602   Controller->EphemeralProgressMessage = true;
4603   DAC960_Progress("%s in Progress: Logical Drive %d (/dev/rd/c%dd%d) "
4604                   "%d%% completed\n", Controller,
4605                   MessageString,
4606                   LogicalDeviceNumber,
4607                   Controller->ControllerNumber,
4608                   LogicalDeviceNumber,
4609                   (100 * (BlocksCompleted >> 7)) / (LogicalDeviceSize >> 7));
4610   Controller->EphemeralProgressMessage = false;
4611 }
4612
4613
4614 /*
4615   DAC960_V2_ProcessCompletedCommand performs completion processing for Command
4616   for DAC960 V2 Firmware Controllers.
4617 */
4618
4619 static void DAC960_V2_ProcessCompletedCommand(DAC960_Command_T *Command)
4620 {
4621   DAC960_Controller_T *Controller = Command->Controller;
4622   DAC960_CommandType_T CommandType = Command->CommandType;
4623   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
4624   DAC960_V2_IOCTL_Opcode_T CommandOpcode = CommandMailbox->Common.IOCTL_Opcode;
4625   DAC960_V2_CommandStatus_T CommandStatus = Command->V2.CommandStatus;
4626
4627   if (CommandType == DAC960_ReadCommand ||
4628       CommandType == DAC960_WriteCommand)
4629     {
4630
4631 #ifdef FORCE_RETRY_DEBUG
4632       CommandStatus = DAC960_V2_AbormalCompletion;
4633 #endif
4634       Command->V2.RequestSense->SenseKey = DAC960_SenseKey_MediumError;
4635
4636       if (CommandStatus == DAC960_V2_NormalCompletion) {
4637
4638                 if (!DAC960_ProcessCompletedRequest(Command, true))
4639                         BUG();
4640
4641       } else if (Command->V2.RequestSense->SenseKey == DAC960_SenseKey_MediumError)
4642         {
4643           /*
4644            * break the command down into pieces and resubmit each
4645            * piece, hoping that some of them will succeed.
4646            */
4647            DAC960_queue_partial_rw(Command);
4648            return;
4649         }
4650       else
4651         {
4652           if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4653             DAC960_V2_ReadWriteError(Command);
4654           /*
4655             Perform completion processing for all buffers in this I/O Request.
4656           */
4657           (void)DAC960_ProcessCompletedRequest(Command, false);
4658         }
4659     }
4660   else if (CommandType == DAC960_ReadRetryCommand ||
4661            CommandType == DAC960_WriteRetryCommand)
4662     {
4663       boolean normal_completion;
4664
4665 #ifdef FORCE_RETRY_FAILURE_DEBUG
4666       static int retry_count = 1;
4667 #endif
4668       /*
4669         Perform completion processing for the portion that was
4670         retried, and submit the next portion, if any.
4671       */
4672       normal_completion = true;
4673       if (CommandStatus != DAC960_V2_NormalCompletion) {
4674         normal_completion = false;
4675         if (Command->V2.RequestSense->SenseKey != DAC960_SenseKey_NotReady)
4676             DAC960_V2_ReadWriteError(Command);
4677       }
4678
4679 #ifdef FORCE_RETRY_FAILURE_DEBUG
4680       if (!(++retry_count % 10000)) {
4681               printk("V2 error retry failure test\n");
4682               normal_completion = false;
4683               DAC960_V2_ReadWriteError(Command);
4684       }
4685 #endif
4686
4687       if (!DAC960_ProcessCompletedRequest(Command, normal_completion)) {
4688                 DAC960_queue_partial_rw(Command);
4689                 return;
4690       }
4691     }
4692   else if (CommandType == DAC960_MonitoringCommand)
4693     {
4694       if (Controller->ShutdownMonitoringTimer)
4695               return;
4696       if (CommandOpcode == DAC960_V2_GetControllerInfo)
4697         {
4698           DAC960_V2_ControllerInfo_T *NewControllerInfo =
4699             Controller->V2.NewControllerInformation;
4700           DAC960_V2_ControllerInfo_T *ControllerInfo =
4701             &Controller->V2.ControllerInformation;
4702           Controller->LogicalDriveCount =
4703             NewControllerInfo->LogicalDevicesPresent;
4704           Controller->V2.NeedLogicalDeviceInformation = true;
4705           Controller->V2.NeedPhysicalDeviceInformation = true;
4706           Controller->V2.StartLogicalDeviceInformationScan = true;
4707           Controller->V2.StartPhysicalDeviceInformationScan = true;
4708           Controller->MonitoringAlertMode =
4709             (NewControllerInfo->LogicalDevicesCritical > 0 ||
4710              NewControllerInfo->LogicalDevicesOffline > 0 ||
4711              NewControllerInfo->PhysicalDisksCritical > 0 ||
4712              NewControllerInfo->PhysicalDisksOffline > 0);
4713           memcpy(ControllerInfo, NewControllerInfo,
4714                  sizeof(DAC960_V2_ControllerInfo_T));
4715         }
4716       else if (CommandOpcode == DAC960_V2_GetEvent)
4717         {
4718           if (CommandStatus == DAC960_V2_NormalCompletion) {
4719             DAC960_V2_ReportEvent(Controller, Controller->V2.Event);
4720           }
4721           Controller->V2.NextEventSequenceNumber++;
4722         }
4723       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid &&
4724                CommandStatus == DAC960_V2_NormalCompletion)
4725         {
4726           DAC960_V2_PhysicalDeviceInfo_T *NewPhysicalDeviceInfo =
4727             Controller->V2.NewPhysicalDeviceInformation;
4728           unsigned int PhysicalDeviceIndex = Controller->V2.PhysicalDeviceIndex;
4729           DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4730             Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4731           DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4732             Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4733           unsigned int DeviceIndex;
4734           while (PhysicalDeviceInfo != NULL &&
4735                  (NewPhysicalDeviceInfo->Channel >
4736                   PhysicalDeviceInfo->Channel ||
4737                   (NewPhysicalDeviceInfo->Channel ==
4738                    PhysicalDeviceInfo->Channel &&
4739                    (NewPhysicalDeviceInfo->TargetID >
4740                     PhysicalDeviceInfo->TargetID ||
4741                    (NewPhysicalDeviceInfo->TargetID ==
4742                     PhysicalDeviceInfo->TargetID &&
4743                     NewPhysicalDeviceInfo->LogicalUnit >
4744                     PhysicalDeviceInfo->LogicalUnit)))))
4745             {
4746               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4747                               Controller,
4748                               PhysicalDeviceInfo->Channel,
4749                               PhysicalDeviceInfo->TargetID);
4750               Controller->V2.PhysicalDeviceInformation
4751                              [PhysicalDeviceIndex] = NULL;
4752               Controller->V2.InquiryUnitSerialNumber
4753                              [PhysicalDeviceIndex] = NULL;
4754               kfree(PhysicalDeviceInfo);
4755               kfree(InquiryUnitSerialNumber);
4756               for (DeviceIndex = PhysicalDeviceIndex;
4757                    DeviceIndex < DAC960_V2_MaxPhysicalDevices - 1;
4758                    DeviceIndex++)
4759                 {
4760                   Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4761                     Controller->V2.PhysicalDeviceInformation[DeviceIndex+1];
4762                   Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4763                     Controller->V2.InquiryUnitSerialNumber[DeviceIndex+1];
4764                 }
4765               Controller->V2.PhysicalDeviceInformation
4766                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4767               Controller->V2.InquiryUnitSerialNumber
4768                              [DAC960_V2_MaxPhysicalDevices-1] = NULL;
4769               PhysicalDeviceInfo =
4770                 Controller->V2.PhysicalDeviceInformation[PhysicalDeviceIndex];
4771               InquiryUnitSerialNumber =
4772                 Controller->V2.InquiryUnitSerialNumber[PhysicalDeviceIndex];
4773             }
4774           if (PhysicalDeviceInfo == NULL ||
4775               (NewPhysicalDeviceInfo->Channel !=
4776                PhysicalDeviceInfo->Channel) ||
4777               (NewPhysicalDeviceInfo->TargetID !=
4778                PhysicalDeviceInfo->TargetID) ||
4779               (NewPhysicalDeviceInfo->LogicalUnit !=
4780                PhysicalDeviceInfo->LogicalUnit))
4781             {
4782               PhysicalDeviceInfo =
4783                 kmalloc(sizeof(DAC960_V2_PhysicalDeviceInfo_T), GFP_ATOMIC);
4784               InquiryUnitSerialNumber =
4785                   kmalloc(sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T),
4786                           GFP_ATOMIC);
4787               if (InquiryUnitSerialNumber == NULL ||
4788                   PhysicalDeviceInfo == NULL)
4789                 {
4790                   kfree(InquiryUnitSerialNumber);
4791                   InquiryUnitSerialNumber = NULL;
4792                   kfree(PhysicalDeviceInfo);
4793                   PhysicalDeviceInfo = NULL;
4794                 }
4795               DAC960_Critical("Physical Device %d:%d Now Exists%s\n",
4796                               Controller,
4797                               NewPhysicalDeviceInfo->Channel,
4798                               NewPhysicalDeviceInfo->TargetID,
4799                               (PhysicalDeviceInfo != NULL
4800                                ? "" : " - Allocation Failed"));
4801               if (PhysicalDeviceInfo != NULL)
4802                 {
4803                   memset(PhysicalDeviceInfo, 0,
4804                          sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4805                   PhysicalDeviceInfo->PhysicalDeviceState =
4806                     DAC960_V2_Device_InvalidState;
4807                   memset(InquiryUnitSerialNumber, 0,
4808                          sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
4809                   InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
4810                   for (DeviceIndex = DAC960_V2_MaxPhysicalDevices - 1;
4811                        DeviceIndex > PhysicalDeviceIndex;
4812                        DeviceIndex--)
4813                     {
4814                       Controller->V2.PhysicalDeviceInformation[DeviceIndex] =
4815                         Controller->V2.PhysicalDeviceInformation[DeviceIndex-1];
4816                       Controller->V2.InquiryUnitSerialNumber[DeviceIndex] =
4817                         Controller->V2.InquiryUnitSerialNumber[DeviceIndex-1];
4818                     }
4819                   Controller->V2.PhysicalDeviceInformation
4820                                  [PhysicalDeviceIndex] =
4821                     PhysicalDeviceInfo;
4822                   Controller->V2.InquiryUnitSerialNumber
4823                                  [PhysicalDeviceIndex] =
4824                     InquiryUnitSerialNumber;
4825                   Controller->V2.NeedDeviceSerialNumberInformation = true;
4826                 }
4827             }
4828           if (PhysicalDeviceInfo != NULL)
4829             {
4830               if (NewPhysicalDeviceInfo->PhysicalDeviceState !=
4831                   PhysicalDeviceInfo->PhysicalDeviceState)
4832                 DAC960_Critical(
4833                   "Physical Device %d:%d is now %s\n", Controller,
4834                   NewPhysicalDeviceInfo->Channel,
4835                   NewPhysicalDeviceInfo->TargetID,
4836                   (NewPhysicalDeviceInfo->PhysicalDeviceState
4837                    == DAC960_V2_Device_Online
4838                    ? "ONLINE"
4839                    : NewPhysicalDeviceInfo->PhysicalDeviceState
4840                      == DAC960_V2_Device_Rebuild
4841                      ? "REBUILD"
4842                      : NewPhysicalDeviceInfo->PhysicalDeviceState
4843                        == DAC960_V2_Device_Missing
4844                        ? "MISSING"
4845                        : NewPhysicalDeviceInfo->PhysicalDeviceState
4846                          == DAC960_V2_Device_Critical
4847                          ? "CRITICAL"
4848                          : NewPhysicalDeviceInfo->PhysicalDeviceState
4849                            == DAC960_V2_Device_Dead
4850                            ? "DEAD"
4851                            : NewPhysicalDeviceInfo->PhysicalDeviceState
4852                              == DAC960_V2_Device_SuspectedDead
4853                              ? "SUSPECTED-DEAD"
4854                              : NewPhysicalDeviceInfo->PhysicalDeviceState
4855                                == DAC960_V2_Device_CommandedOffline
4856                                ? "COMMANDED-OFFLINE"
4857                                : NewPhysicalDeviceInfo->PhysicalDeviceState
4858                                  == DAC960_V2_Device_Standby
4859                                  ? "STANDBY" : "UNKNOWN"));
4860               if ((NewPhysicalDeviceInfo->ParityErrors !=
4861                    PhysicalDeviceInfo->ParityErrors) ||
4862                   (NewPhysicalDeviceInfo->SoftErrors !=
4863                    PhysicalDeviceInfo->SoftErrors) ||
4864                   (NewPhysicalDeviceInfo->HardErrors !=
4865                    PhysicalDeviceInfo->HardErrors) ||
4866                   (NewPhysicalDeviceInfo->MiscellaneousErrors !=
4867                    PhysicalDeviceInfo->MiscellaneousErrors) ||
4868                   (NewPhysicalDeviceInfo->CommandTimeouts !=
4869                    PhysicalDeviceInfo->CommandTimeouts) ||
4870                   (NewPhysicalDeviceInfo->Retries !=
4871                    PhysicalDeviceInfo->Retries) ||
4872                   (NewPhysicalDeviceInfo->Aborts !=
4873                    PhysicalDeviceInfo->Aborts) ||
4874                   (NewPhysicalDeviceInfo->PredictedFailuresDetected !=
4875                    PhysicalDeviceInfo->PredictedFailuresDetected))
4876                 {
4877                   DAC960_Critical("Physical Device %d:%d Errors: "
4878                                   "Parity = %d, Soft = %d, "
4879                                   "Hard = %d, Misc = %d\n",
4880                                   Controller,
4881                                   NewPhysicalDeviceInfo->Channel,
4882                                   NewPhysicalDeviceInfo->TargetID,
4883                                   NewPhysicalDeviceInfo->ParityErrors,
4884                                   NewPhysicalDeviceInfo->SoftErrors,
4885                                   NewPhysicalDeviceInfo->HardErrors,
4886                                   NewPhysicalDeviceInfo->MiscellaneousErrors);
4887                   DAC960_Critical("Physical Device %d:%d Errors: "
4888                                   "Timeouts = %d, Retries = %d, "
4889                                   "Aborts = %d, Predicted = %d\n",
4890                                   Controller,
4891                                   NewPhysicalDeviceInfo->Channel,
4892                                   NewPhysicalDeviceInfo->TargetID,
4893                                   NewPhysicalDeviceInfo->CommandTimeouts,
4894                                   NewPhysicalDeviceInfo->Retries,
4895                                   NewPhysicalDeviceInfo->Aborts,
4896                                   NewPhysicalDeviceInfo
4897                                   ->PredictedFailuresDetected);
4898                 }
4899               if ((PhysicalDeviceInfo->PhysicalDeviceState
4900                    == DAC960_V2_Device_Dead ||
4901                    PhysicalDeviceInfo->PhysicalDeviceState
4902                    == DAC960_V2_Device_InvalidState) &&
4903                   NewPhysicalDeviceInfo->PhysicalDeviceState
4904                   != DAC960_V2_Device_Dead)
4905                 Controller->V2.NeedDeviceSerialNumberInformation = true;
4906               memcpy(PhysicalDeviceInfo, NewPhysicalDeviceInfo,
4907                      sizeof(DAC960_V2_PhysicalDeviceInfo_T));
4908             }
4909           NewPhysicalDeviceInfo->LogicalUnit++;
4910           Controller->V2.PhysicalDeviceIndex++;
4911         }
4912       else if (CommandOpcode == DAC960_V2_GetPhysicalDeviceInfoValid)
4913         {
4914           unsigned int DeviceIndex;
4915           for (DeviceIndex = Controller->V2.PhysicalDeviceIndex;
4916                DeviceIndex < DAC960_V2_MaxPhysicalDevices;
4917                DeviceIndex++)
4918             {
4919               DAC960_V2_PhysicalDeviceInfo_T *PhysicalDeviceInfo =
4920                 Controller->V2.PhysicalDeviceInformation[DeviceIndex];
4921               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
4922                 Controller->V2.InquiryUnitSerialNumber[DeviceIndex];
4923               if (PhysicalDeviceInfo == NULL) break;
4924               DAC960_Critical("Physical Device %d:%d No Longer Exists\n",
4925                               Controller,
4926                               PhysicalDeviceInfo->Channel,
4927                               PhysicalDeviceInfo->TargetID);
4928               Controller->V2.PhysicalDeviceInformation[DeviceIndex] = NULL;
4929               Controller->V2.InquiryUnitSerialNumber[DeviceIndex] = NULL;
4930               kfree(PhysicalDeviceInfo);
4931               kfree(InquiryUnitSerialNumber);
4932             }
4933           Controller->V2.NeedPhysicalDeviceInformation = false;
4934         }
4935       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid &&
4936                CommandStatus == DAC960_V2_NormalCompletion)
4937         {
4938           DAC960_V2_LogicalDeviceInfo_T *NewLogicalDeviceInfo =
4939             Controller->V2.NewLogicalDeviceInformation;
4940           unsigned short LogicalDeviceNumber =
4941             NewLogicalDeviceInfo->LogicalDeviceNumber;
4942           DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
4943             Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber];
4944           if (LogicalDeviceInfo == NULL)
4945             {
4946               DAC960_V2_PhysicalDevice_T PhysicalDevice;
4947               PhysicalDevice.Controller = 0;
4948               PhysicalDevice.Channel = NewLogicalDeviceInfo->Channel;
4949               PhysicalDevice.TargetID = NewLogicalDeviceInfo->TargetID;
4950               PhysicalDevice.LogicalUnit = NewLogicalDeviceInfo->LogicalUnit;
4951               Controller->V2.LogicalDriveToVirtualDevice[LogicalDeviceNumber] =
4952                 PhysicalDevice;
4953               LogicalDeviceInfo = (DAC960_V2_LogicalDeviceInfo_T *)
4954                 kmalloc(sizeof(DAC960_V2_LogicalDeviceInfo_T), GFP_ATOMIC);
4955               Controller->V2.LogicalDeviceInformation[LogicalDeviceNumber] =
4956                 LogicalDeviceInfo;
4957               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4958                               "Now Exists%s\n", Controller,
4959                               LogicalDeviceNumber,
4960                               Controller->ControllerNumber,
4961                               LogicalDeviceNumber,
4962                               (LogicalDeviceInfo != NULL
4963                                ? "" : " - Allocation Failed"));
4964               if (LogicalDeviceInfo != NULL)
4965                 {
4966                   memset(LogicalDeviceInfo, 0,
4967                          sizeof(DAC960_V2_LogicalDeviceInfo_T));
4968                   DAC960_ComputeGenericDiskInfo(Controller);
4969                 }
4970             }
4971           if (LogicalDeviceInfo != NULL)
4972             {
4973               unsigned long LogicalDeviceSize =
4974                 NewLogicalDeviceInfo->ConfigurableDeviceSize;
4975               if (NewLogicalDeviceInfo->LogicalDeviceState !=
4976                   LogicalDeviceInfo->LogicalDeviceState)
4977                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
4978                                 "is now %s\n", Controller,
4979                                 LogicalDeviceNumber,
4980                                 Controller->ControllerNumber,
4981                                 LogicalDeviceNumber,
4982                                 (NewLogicalDeviceInfo->LogicalDeviceState
4983                                  == DAC960_V2_LogicalDevice_Online
4984                                  ? "ONLINE"
4985                                  : NewLogicalDeviceInfo->LogicalDeviceState
4986                                    == DAC960_V2_LogicalDevice_Critical
4987                                    ? "CRITICAL" : "OFFLINE"));
4988               if ((NewLogicalDeviceInfo->SoftErrors !=
4989                    LogicalDeviceInfo->SoftErrors) ||
4990                   (NewLogicalDeviceInfo->CommandsFailed !=
4991                    LogicalDeviceInfo->CommandsFailed) ||
4992                   (NewLogicalDeviceInfo->DeferredWriteErrors !=
4993                    LogicalDeviceInfo->DeferredWriteErrors))
4994                 DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) Errors: "
4995                                 "Soft = %d, Failed = %d, Deferred Write = %d\n",
4996                                 Controller, LogicalDeviceNumber,
4997                                 Controller->ControllerNumber,
4998                                 LogicalDeviceNumber,
4999                                 NewLogicalDeviceInfo->SoftErrors,
5000                                 NewLogicalDeviceInfo->CommandsFailed,
5001                                 NewLogicalDeviceInfo->DeferredWriteErrors);
5002               if (NewLogicalDeviceInfo->ConsistencyCheckInProgress)
5003                 DAC960_V2_ReportProgress(Controller,
5004                                          "Consistency Check",
5005                                          LogicalDeviceNumber,
5006                                          NewLogicalDeviceInfo
5007                                          ->ConsistencyCheckBlockNumber,
5008                                          LogicalDeviceSize);
5009               else if (NewLogicalDeviceInfo->RebuildInProgress)
5010                 DAC960_V2_ReportProgress(Controller,
5011                                          "Rebuild",
5012                                          LogicalDeviceNumber,
5013                                          NewLogicalDeviceInfo
5014                                          ->RebuildBlockNumber,
5015                                          LogicalDeviceSize);
5016               else if (NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5017                 DAC960_V2_ReportProgress(Controller,
5018                                          "Background Initialization",
5019                                          LogicalDeviceNumber,
5020                                          NewLogicalDeviceInfo
5021                                          ->BackgroundInitializationBlockNumber,
5022                                          LogicalDeviceSize);
5023               else if (NewLogicalDeviceInfo->ForegroundInitializationInProgress)
5024                 DAC960_V2_ReportProgress(Controller,
5025                                          "Foreground Initialization",
5026                                          LogicalDeviceNumber,
5027                                          NewLogicalDeviceInfo
5028                                          ->ForegroundInitializationBlockNumber,
5029                                          LogicalDeviceSize);
5030               else if (NewLogicalDeviceInfo->DataMigrationInProgress)
5031                 DAC960_V2_ReportProgress(Controller,
5032                                          "Data Migration",
5033                                          LogicalDeviceNumber,
5034                                          NewLogicalDeviceInfo
5035                                          ->DataMigrationBlockNumber,
5036                                          LogicalDeviceSize);
5037               else if (NewLogicalDeviceInfo->PatrolOperationInProgress)
5038                 DAC960_V2_ReportProgress(Controller,
5039                                          "Patrol Operation",
5040                                          LogicalDeviceNumber,
5041                                          NewLogicalDeviceInfo
5042                                          ->PatrolOperationBlockNumber,
5043                                          LogicalDeviceSize);
5044               if (LogicalDeviceInfo->BackgroundInitializationInProgress &&
5045                   !NewLogicalDeviceInfo->BackgroundInitializationInProgress)
5046                 DAC960_Progress("Logical Drive %d (/dev/rd/c%dd%d) "
5047                                 "Background Initialization %s\n",
5048                                 Controller,
5049                                 LogicalDeviceNumber,
5050                                 Controller->ControllerNumber,
5051                                 LogicalDeviceNumber,
5052                                 (NewLogicalDeviceInfo->LogicalDeviceControl
5053                                                       .LogicalDeviceInitialized
5054                                  ? "Completed" : "Failed"));
5055               memcpy(LogicalDeviceInfo, NewLogicalDeviceInfo,
5056                      sizeof(DAC960_V2_LogicalDeviceInfo_T));
5057             }
5058           Controller->V2.LogicalDriveFoundDuringScan
5059                          [LogicalDeviceNumber] = true;
5060           NewLogicalDeviceInfo->LogicalDeviceNumber++;
5061         }
5062       else if (CommandOpcode == DAC960_V2_GetLogicalDeviceInfoValid)
5063         {
5064           int LogicalDriveNumber;
5065           for (LogicalDriveNumber = 0;
5066                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5067                LogicalDriveNumber++)
5068             {
5069               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5070                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5071               if (LogicalDeviceInfo == NULL ||
5072                   Controller->V2.LogicalDriveFoundDuringScan
5073                                  [LogicalDriveNumber])
5074                 continue;
5075               DAC960_Critical("Logical Drive %d (/dev/rd/c%dd%d) "
5076                               "No Longer Exists\n", Controller,
5077                               LogicalDriveNumber,
5078                               Controller->ControllerNumber,
5079                               LogicalDriveNumber);
5080               Controller->V2.LogicalDeviceInformation
5081                              [LogicalDriveNumber] = NULL;
5082               kfree(LogicalDeviceInfo);
5083               Controller->LogicalDriveInitiallyAccessible
5084                           [LogicalDriveNumber] = false;
5085               DAC960_ComputeGenericDiskInfo(Controller);
5086             }
5087           Controller->V2.NeedLogicalDeviceInformation = false;
5088         }
5089       else if (CommandOpcode == DAC960_V2_SCSI_10_Passthru)
5090         {
5091             DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5092                 Controller->V2.InquiryUnitSerialNumber[Controller->V2.PhysicalDeviceIndex - 1];
5093
5094             if (CommandStatus != DAC960_V2_NormalCompletion) {
5095                 memset(InquiryUnitSerialNumber,
5096                         0, sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5097                 InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5098             } else
5099                 memcpy(InquiryUnitSerialNumber,
5100                         Controller->V2.NewInquiryUnitSerialNumber,
5101                         sizeof(DAC960_SCSI_Inquiry_UnitSerialNumber_T));
5102
5103              Controller->V2.NeedDeviceSerialNumberInformation = false;
5104         }
5105
5106       if (Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5107           - Controller->V2.NextEventSequenceNumber > 0)
5108         {
5109           CommandMailbox->GetEvent.CommandOpcode = DAC960_V2_IOCTL;
5110           CommandMailbox->GetEvent.DataTransferSize = sizeof(DAC960_V2_Event_T);
5111           CommandMailbox->GetEvent.EventSequenceNumberHigh16 =
5112             Controller->V2.NextEventSequenceNumber >> 16;
5113           CommandMailbox->GetEvent.ControllerNumber = 0;
5114           CommandMailbox->GetEvent.IOCTL_Opcode =
5115             DAC960_V2_GetEvent;
5116           CommandMailbox->GetEvent.EventSequenceNumberLow16 =
5117             Controller->V2.NextEventSequenceNumber & 0xFFFF;
5118           CommandMailbox->GetEvent.DataTransferMemoryAddress
5119                                   .ScatterGatherSegments[0]
5120                                   .SegmentDataPointer =
5121             Controller->V2.EventDMA;
5122           CommandMailbox->GetEvent.DataTransferMemoryAddress
5123                                   .ScatterGatherSegments[0]
5124                                   .SegmentByteCount =
5125             CommandMailbox->GetEvent.DataTransferSize;
5126           DAC960_QueueCommand(Command);
5127           return;
5128         }
5129       if (Controller->V2.NeedPhysicalDeviceInformation)
5130         {
5131           if (Controller->V2.NeedDeviceSerialNumberInformation)
5132             {
5133               DAC960_SCSI_Inquiry_UnitSerialNumber_T *InquiryUnitSerialNumber =
5134                 Controller->V2.NewInquiryUnitSerialNumber;
5135               InquiryUnitSerialNumber->PeripheralDeviceType = 0x1F;
5136
5137               DAC960_V2_ConstructNewUnitSerialNumber(Controller, CommandMailbox,
5138                         Controller->V2.NewPhysicalDeviceInformation->Channel,
5139                         Controller->V2.NewPhysicalDeviceInformation->TargetID,
5140                 Controller->V2.NewPhysicalDeviceInformation->LogicalUnit - 1);
5141
5142
5143               DAC960_QueueCommand(Command);
5144               return;
5145             }
5146           if (Controller->V2.StartPhysicalDeviceInformationScan)
5147             {
5148               Controller->V2.PhysicalDeviceIndex = 0;
5149               Controller->V2.NewPhysicalDeviceInformation->Channel = 0;
5150               Controller->V2.NewPhysicalDeviceInformation->TargetID = 0;
5151               Controller->V2.NewPhysicalDeviceInformation->LogicalUnit = 0;
5152               Controller->V2.StartPhysicalDeviceInformationScan = false;
5153             }
5154           CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5155           CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
5156             sizeof(DAC960_V2_PhysicalDeviceInfo_T);
5157           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.LogicalUnit =
5158             Controller->V2.NewPhysicalDeviceInformation->LogicalUnit;
5159           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID =
5160             Controller->V2.NewPhysicalDeviceInformation->TargetID;
5161           CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel =
5162             Controller->V2.NewPhysicalDeviceInformation->Channel;
5163           CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
5164             DAC960_V2_GetPhysicalDeviceInfoValid;
5165           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5166                                             .ScatterGatherSegments[0]
5167                                             .SegmentDataPointer =
5168             Controller->V2.NewPhysicalDeviceInformationDMA;
5169           CommandMailbox->PhysicalDeviceInfo.DataTransferMemoryAddress
5170                                             .ScatterGatherSegments[0]
5171                                             .SegmentByteCount =
5172             CommandMailbox->PhysicalDeviceInfo.DataTransferSize;
5173           DAC960_QueueCommand(Command);
5174           return;
5175         }
5176       if (Controller->V2.NeedLogicalDeviceInformation)
5177         {
5178           if (Controller->V2.StartLogicalDeviceInformationScan)
5179             {
5180               int LogicalDriveNumber;
5181               for (LogicalDriveNumber = 0;
5182                    LogicalDriveNumber < DAC960_MaxLogicalDrives;
5183                    LogicalDriveNumber++)
5184                 Controller->V2.LogicalDriveFoundDuringScan
5185                                [LogicalDriveNumber] = false;
5186               Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber = 0;
5187               Controller->V2.StartLogicalDeviceInformationScan = false;
5188             }
5189           CommandMailbox->LogicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
5190           CommandMailbox->LogicalDeviceInfo.DataTransferSize =
5191             sizeof(DAC960_V2_LogicalDeviceInfo_T);
5192           CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
5193             Controller->V2.NewLogicalDeviceInformation->LogicalDeviceNumber;
5194           CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
5195             DAC960_V2_GetLogicalDeviceInfoValid;
5196           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5197                                            .ScatterGatherSegments[0]
5198                                            .SegmentDataPointer =
5199             Controller->V2.NewLogicalDeviceInformationDMA;
5200           CommandMailbox->LogicalDeviceInfo.DataTransferMemoryAddress
5201                                            .ScatterGatherSegments[0]
5202                                            .SegmentByteCount =
5203             CommandMailbox->LogicalDeviceInfo.DataTransferSize;
5204           DAC960_QueueCommand(Command);
5205           return;
5206         }
5207       Controller->MonitoringTimerCount++;
5208       Controller->MonitoringTimer.expires =
5209         jiffies + DAC960_HealthStatusMonitoringInterval;
5210         add_timer(&Controller->MonitoringTimer);
5211     }
5212   if (CommandType == DAC960_ImmediateCommand)
5213     {
5214       complete(Command->Completion);
5215       Command->Completion = NULL;
5216       return;
5217     }
5218   if (CommandType == DAC960_QueuedCommand)
5219     {
5220       DAC960_V2_KernelCommand_T *KernelCommand = Command->V2.KernelCommand;
5221       KernelCommand->CommandStatus = CommandStatus;
5222       KernelCommand->RequestSenseLength = Command->V2.RequestSenseLength;
5223       KernelCommand->DataTransferLength = Command->V2.DataTransferResidue;
5224       Command->V2.KernelCommand = NULL;
5225       DAC960_DeallocateCommand(Command);
5226       KernelCommand->CompletionFunction(KernelCommand);
5227       return;
5228     }
5229   /*
5230     Queue a Status Monitoring Command to the Controller using the just
5231     completed Command if one was deferred previously due to lack of a
5232     free Command when the Monitoring Timer Function was called.
5233   */
5234   if (Controller->MonitoringCommandDeferred)
5235     {
5236       Controller->MonitoringCommandDeferred = false;
5237       DAC960_V2_QueueMonitoringCommand(Command);
5238       return;
5239     }
5240   /*
5241     Deallocate the Command.
5242   */
5243   DAC960_DeallocateCommand(Command);
5244   /*
5245     Wake up any processes waiting on a free Command.
5246   */
5247   wake_up(&Controller->CommandWaitQueue);
5248 }
5249
5250 /*
5251   DAC960_GEM_InterruptHandler handles hardware interrupts from DAC960 GEM Series
5252   Controllers.
5253 */
5254
5255 static irqreturn_t DAC960_GEM_InterruptHandler(int IRQ_Channel,
5256                                        void *DeviceIdentifier,
5257                                        struct pt_regs *InterruptRegisters)
5258 {
5259   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5260   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5261   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5262   unsigned long flags;
5263
5264   spin_lock_irqsave(&Controller->queue_lock, flags);
5265   DAC960_GEM_AcknowledgeInterrupt(ControllerBaseAddress);
5266   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5267   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5268     {
5269        DAC960_V2_CommandIdentifier_T CommandIdentifier =
5270            NextStatusMailbox->Fields.CommandIdentifier;
5271        DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5272        Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5273        Command->V2.RequestSenseLength =
5274            NextStatusMailbox->Fields.RequestSenseLength;
5275        Command->V2.DataTransferResidue =
5276            NextStatusMailbox->Fields.DataTransferResidue;
5277        NextStatusMailbox->Words[0] = 0;
5278        if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5279            NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5280        DAC960_V2_ProcessCompletedCommand(Command);
5281     }
5282   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5283   /*
5284     Attempt to remove additional I/O Requests from the Controller's
5285     I/O Request Queue and queue them to the Controller.
5286   */
5287   DAC960_ProcessRequest(Controller);
5288   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5289   return IRQ_HANDLED;
5290 }
5291
5292 /*
5293   DAC960_BA_InterruptHandler handles hardware interrupts from DAC960 BA Series
5294   Controllers.
5295 */
5296
5297 static irqreturn_t DAC960_BA_InterruptHandler(int IRQ_Channel,
5298                                        void *DeviceIdentifier,
5299                                        struct pt_regs *InterruptRegisters)
5300 {
5301   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5302   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5303   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5304   unsigned long flags;
5305
5306   spin_lock_irqsave(&Controller->queue_lock, flags);
5307   DAC960_BA_AcknowledgeInterrupt(ControllerBaseAddress);
5308   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5309   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5310     {
5311       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5312         NextStatusMailbox->Fields.CommandIdentifier;
5313       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5314       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5315       Command->V2.RequestSenseLength =
5316         NextStatusMailbox->Fields.RequestSenseLength;
5317       Command->V2.DataTransferResidue =
5318         NextStatusMailbox->Fields.DataTransferResidue;
5319       NextStatusMailbox->Words[0] = 0;
5320       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5321         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5322       DAC960_V2_ProcessCompletedCommand(Command);
5323     }
5324   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5325   /*
5326     Attempt to remove additional I/O Requests from the Controller's
5327     I/O Request Queue and queue them to the Controller.
5328   */
5329   DAC960_ProcessRequest(Controller);
5330   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5331   return IRQ_HANDLED;
5332 }
5333
5334
5335 /*
5336   DAC960_LP_InterruptHandler handles hardware interrupts from DAC960 LP Series
5337   Controllers.
5338 */
5339
5340 static irqreturn_t DAC960_LP_InterruptHandler(int IRQ_Channel,
5341                                        void *DeviceIdentifier,
5342                                        struct pt_regs *InterruptRegisters)
5343 {
5344   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5345   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5346   DAC960_V2_StatusMailbox_T *NextStatusMailbox;
5347   unsigned long flags;
5348
5349   spin_lock_irqsave(&Controller->queue_lock, flags);
5350   DAC960_LP_AcknowledgeInterrupt(ControllerBaseAddress);
5351   NextStatusMailbox = Controller->V2.NextStatusMailbox;
5352   while (NextStatusMailbox->Fields.CommandIdentifier > 0)
5353     {
5354       DAC960_V2_CommandIdentifier_T CommandIdentifier =
5355         NextStatusMailbox->Fields.CommandIdentifier;
5356       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5357       Command->V2.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5358       Command->V2.RequestSenseLength =
5359         NextStatusMailbox->Fields.RequestSenseLength;
5360       Command->V2.DataTransferResidue =
5361         NextStatusMailbox->Fields.DataTransferResidue;
5362       NextStatusMailbox->Words[0] = 0;
5363       if (++NextStatusMailbox > Controller->V2.LastStatusMailbox)
5364         NextStatusMailbox = Controller->V2.FirstStatusMailbox;
5365       DAC960_V2_ProcessCompletedCommand(Command);
5366     }
5367   Controller->V2.NextStatusMailbox = NextStatusMailbox;
5368   /*
5369     Attempt to remove additional I/O Requests from the Controller's
5370     I/O Request Queue and queue them to the Controller.
5371   */
5372   DAC960_ProcessRequest(Controller);
5373   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5374   return IRQ_HANDLED;
5375 }
5376
5377
5378 /*
5379   DAC960_LA_InterruptHandler handles hardware interrupts from DAC960 LA Series
5380   Controllers.
5381 */
5382
5383 static irqreturn_t DAC960_LA_InterruptHandler(int IRQ_Channel,
5384                                        void *DeviceIdentifier,
5385                                        struct pt_regs *InterruptRegisters)
5386 {
5387   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5388   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5389   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5390   unsigned long flags;
5391
5392   spin_lock_irqsave(&Controller->queue_lock, flags);
5393   DAC960_LA_AcknowledgeInterrupt(ControllerBaseAddress);
5394   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5395   while (NextStatusMailbox->Fields.Valid)
5396     {
5397       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5398         NextStatusMailbox->Fields.CommandIdentifier;
5399       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5400       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5401       NextStatusMailbox->Word = 0;
5402       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5403         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5404       DAC960_V1_ProcessCompletedCommand(Command);
5405     }
5406   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5407   /*
5408     Attempt to remove additional I/O Requests from the Controller's
5409     I/O Request Queue and queue them to the Controller.
5410   */
5411   DAC960_ProcessRequest(Controller);
5412   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5413   return IRQ_HANDLED;
5414 }
5415
5416
5417 /*
5418   DAC960_PG_InterruptHandler handles hardware interrupts from DAC960 PG Series
5419   Controllers.
5420 */
5421
5422 static irqreturn_t DAC960_PG_InterruptHandler(int IRQ_Channel,
5423                                        void *DeviceIdentifier,
5424                                        struct pt_regs *InterruptRegisters)
5425 {
5426   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5427   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5428   DAC960_V1_StatusMailbox_T *NextStatusMailbox;
5429   unsigned long flags;
5430
5431   spin_lock_irqsave(&Controller->queue_lock, flags);
5432   DAC960_PG_AcknowledgeInterrupt(ControllerBaseAddress);
5433   NextStatusMailbox = Controller->V1.NextStatusMailbox;
5434   while (NextStatusMailbox->Fields.Valid)
5435     {
5436       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5437         NextStatusMailbox->Fields.CommandIdentifier;
5438       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5439       Command->V1.CommandStatus = NextStatusMailbox->Fields.CommandStatus;
5440       NextStatusMailbox->Word = 0;
5441       if (++NextStatusMailbox > Controller->V1.LastStatusMailbox)
5442         NextStatusMailbox = Controller->V1.FirstStatusMailbox;
5443       DAC960_V1_ProcessCompletedCommand(Command);
5444     }
5445   Controller->V1.NextStatusMailbox = NextStatusMailbox;
5446   /*
5447     Attempt to remove additional I/O Requests from the Controller's
5448     I/O Request Queue and queue them to the Controller.
5449   */
5450   DAC960_ProcessRequest(Controller);
5451   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5452   return IRQ_HANDLED;
5453 }
5454
5455
5456 /*
5457   DAC960_PD_InterruptHandler handles hardware interrupts from DAC960 PD Series
5458   Controllers.
5459 */
5460
5461 static irqreturn_t DAC960_PD_InterruptHandler(int IRQ_Channel,
5462                                        void *DeviceIdentifier,
5463                                        struct pt_regs *InterruptRegisters)
5464 {
5465   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5466   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5467   unsigned long flags;
5468
5469   spin_lock_irqsave(&Controller->queue_lock, flags);
5470   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5471     {
5472       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5473         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5474       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5475       Command->V1.CommandStatus =
5476         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5477       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5478       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5479       DAC960_V1_ProcessCompletedCommand(Command);
5480     }
5481   /*
5482     Attempt to remove additional I/O Requests from the Controller's
5483     I/O Request Queue and queue them to the Controller.
5484   */
5485   DAC960_ProcessRequest(Controller);
5486   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5487   return IRQ_HANDLED;
5488 }
5489
5490
5491 /*
5492   DAC960_P_InterruptHandler handles hardware interrupts from DAC960 P Series
5493   Controllers.
5494
5495   Translations of DAC960_V1_Enquiry and DAC960_V1_GetDeviceState rely
5496   on the data having been placed into DAC960_Controller_T, rather than
5497   an arbitrary buffer.
5498 */
5499
5500 static irqreturn_t DAC960_P_InterruptHandler(int IRQ_Channel,
5501                                       void *DeviceIdentifier,
5502                                       struct pt_regs *InterruptRegisters)
5503 {
5504   DAC960_Controller_T *Controller = (DAC960_Controller_T *) DeviceIdentifier;
5505   void __iomem *ControllerBaseAddress = Controller->BaseAddress;
5506   unsigned long flags;
5507
5508   spin_lock_irqsave(&Controller->queue_lock, flags);
5509   while (DAC960_PD_StatusAvailableP(ControllerBaseAddress))
5510     {
5511       DAC960_V1_CommandIdentifier_T CommandIdentifier =
5512         DAC960_PD_ReadStatusCommandIdentifier(ControllerBaseAddress);
5513       DAC960_Command_T *Command = Controller->Commands[CommandIdentifier-1];
5514       DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5515       DAC960_V1_CommandOpcode_T CommandOpcode =
5516         CommandMailbox->Common.CommandOpcode;
5517       Command->V1.CommandStatus =
5518         DAC960_PD_ReadStatusRegister(ControllerBaseAddress);
5519       DAC960_PD_AcknowledgeInterrupt(ControllerBaseAddress);
5520       DAC960_PD_AcknowledgeStatus(ControllerBaseAddress);
5521       switch (CommandOpcode)
5522         {
5523         case DAC960_V1_Enquiry_Old:
5524           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Enquiry;
5525           DAC960_P_To_PD_TranslateEnquiry(Controller->V1.NewEnquiry);
5526           break;
5527         case DAC960_V1_GetDeviceState_Old:
5528           Command->V1.CommandMailbox.Common.CommandOpcode =
5529                                                 DAC960_V1_GetDeviceState;
5530           DAC960_P_To_PD_TranslateDeviceState(Controller->V1.NewDeviceState);
5531           break;
5532         case DAC960_V1_Read_Old:
5533           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Read;
5534           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5535           break;
5536         case DAC960_V1_Write_Old:
5537           Command->V1.CommandMailbox.Common.CommandOpcode = DAC960_V1_Write;
5538           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5539           break;
5540         case DAC960_V1_ReadWithScatterGather_Old:
5541           Command->V1.CommandMailbox.Common.CommandOpcode =
5542             DAC960_V1_ReadWithScatterGather;
5543           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5544           break;
5545         case DAC960_V1_WriteWithScatterGather_Old:
5546           Command->V1.CommandMailbox.Common.CommandOpcode =
5547             DAC960_V1_WriteWithScatterGather;
5548           DAC960_P_To_PD_TranslateReadWriteCommand(CommandMailbox);
5549           break;
5550         default:
5551           break;
5552         }
5553       DAC960_V1_ProcessCompletedCommand(Command);
5554     }
5555   /*
5556     Attempt to remove additional I/O Requests from the Controller's
5557     I/O Request Queue and queue them to the Controller.
5558   */
5559   DAC960_ProcessRequest(Controller);
5560   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5561   return IRQ_HANDLED;
5562 }
5563
5564
5565 /*
5566   DAC960_V1_QueueMonitoringCommand queues a Monitoring Command to DAC960 V1
5567   Firmware Controllers.
5568 */
5569
5570 static void DAC960_V1_QueueMonitoringCommand(DAC960_Command_T *Command)
5571 {
5572   DAC960_Controller_T *Controller = Command->Controller;
5573   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5574   DAC960_V1_ClearCommand(Command);
5575   Command->CommandType = DAC960_MonitoringCommand;
5576   CommandMailbox->Type3.CommandOpcode = DAC960_V1_Enquiry;
5577   CommandMailbox->Type3.BusAddress = Controller->V1.NewEnquiryDMA;
5578   DAC960_QueueCommand(Command);
5579 }
5580
5581
5582 /*
5583   DAC960_V2_QueueMonitoringCommand queues a Monitoring Command to DAC960 V2
5584   Firmware Controllers.
5585 */
5586
5587 static void DAC960_V2_QueueMonitoringCommand(DAC960_Command_T *Command)
5588 {
5589   DAC960_Controller_T *Controller = Command->Controller;
5590   DAC960_V2_CommandMailbox_T *CommandMailbox = &Command->V2.CommandMailbox;
5591   DAC960_V2_ClearCommand(Command);
5592   Command->CommandType = DAC960_MonitoringCommand;
5593   CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
5594   CommandMailbox->ControllerInfo.CommandControlBits
5595                                 .DataTransferControllerToHost = true;
5596   CommandMailbox->ControllerInfo.CommandControlBits
5597                                 .NoAutoRequestSense = true;
5598   CommandMailbox->ControllerInfo.DataTransferSize =
5599     sizeof(DAC960_V2_ControllerInfo_T);
5600   CommandMailbox->ControllerInfo.ControllerNumber = 0;
5601   CommandMailbox->ControllerInfo.IOCTL_Opcode = DAC960_V2_GetControllerInfo;
5602   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5603                                 .ScatterGatherSegments[0]
5604                                 .SegmentDataPointer =
5605     Controller->V2.NewControllerInformationDMA;
5606   CommandMailbox->ControllerInfo.DataTransferMemoryAddress
5607                                 .ScatterGatherSegments[0]
5608                                 .SegmentByteCount =
5609     CommandMailbox->ControllerInfo.DataTransferSize;
5610   DAC960_QueueCommand(Command);
5611 }
5612
5613
5614 /*
5615   DAC960_MonitoringTimerFunction is the timer function for monitoring
5616   the status of DAC960 Controllers.
5617 */
5618
5619 static void DAC960_MonitoringTimerFunction(unsigned long TimerData)
5620 {
5621   DAC960_Controller_T *Controller = (DAC960_Controller_T *) TimerData;
5622   DAC960_Command_T *Command;
5623   unsigned long flags;
5624
5625   if (Controller->FirmwareType == DAC960_V1_Controller)
5626     {
5627       spin_lock_irqsave(&Controller->queue_lock, flags);
5628       /*
5629         Queue a Status Monitoring Command to Controller.
5630       */
5631       Command = DAC960_AllocateCommand(Controller);
5632       if (Command != NULL)
5633         DAC960_V1_QueueMonitoringCommand(Command);
5634       else Controller->MonitoringCommandDeferred = true;
5635       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5636     }
5637   else
5638     {
5639       DAC960_V2_ControllerInfo_T *ControllerInfo =
5640         &Controller->V2.ControllerInformation;
5641       unsigned int StatusChangeCounter =
5642         Controller->V2.HealthStatusBuffer->StatusChangeCounter;
5643       boolean ForceMonitoringCommand = false;
5644       if (time_after(jiffies, Controller->SecondaryMonitoringTime
5645           + DAC960_SecondaryMonitoringInterval))
5646         {
5647           int LogicalDriveNumber;
5648           for (LogicalDriveNumber = 0;
5649                LogicalDriveNumber < DAC960_MaxLogicalDrives;
5650                LogicalDriveNumber++)
5651             {
5652               DAC960_V2_LogicalDeviceInfo_T *LogicalDeviceInfo =
5653                 Controller->V2.LogicalDeviceInformation[LogicalDriveNumber];
5654               if (LogicalDeviceInfo == NULL) continue;
5655               if (!LogicalDeviceInfo->LogicalDeviceControl
5656                                      .LogicalDeviceInitialized)
5657                 {
5658                   ForceMonitoringCommand = true;
5659                   break;
5660                 }
5661             }
5662           Controller->SecondaryMonitoringTime = jiffies;
5663         }
5664       if (StatusChangeCounter == Controller->V2.StatusChangeCounter &&
5665           Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
5666           == Controller->V2.NextEventSequenceNumber &&
5667           (ControllerInfo->BackgroundInitializationsActive +
5668            ControllerInfo->LogicalDeviceInitializationsActive +
5669            ControllerInfo->PhysicalDeviceInitializationsActive +
5670            ControllerInfo->ConsistencyChecksActive +
5671            ControllerInfo->RebuildsActive +
5672            ControllerInfo->OnlineExpansionsActive == 0 ||
5673            time_before(jiffies, Controller->PrimaryMonitoringTime
5674            + DAC960_MonitoringTimerInterval)) &&
5675           !ForceMonitoringCommand)
5676         {
5677           Controller->MonitoringTimer.expires =
5678             jiffies + DAC960_HealthStatusMonitoringInterval;
5679             add_timer(&Controller->MonitoringTimer);
5680           return;
5681         }
5682       Controller->V2.StatusChangeCounter = StatusChangeCounter;
5683       Controller->PrimaryMonitoringTime = jiffies;
5684
5685       spin_lock_irqsave(&Controller->queue_lock, flags);
5686       /*
5687         Queue a Status Monitoring Command to Controller.
5688       */
5689       Command = DAC960_AllocateCommand(Controller);
5690       if (Command != NULL)
5691         DAC960_V2_QueueMonitoringCommand(Command);
5692       else Controller->MonitoringCommandDeferred = true;
5693       spin_unlock_irqrestore(&Controller->queue_lock, flags);
5694       /*
5695         Wake up any processes waiting on a Health Status Buffer change.
5696       */
5697       wake_up(&Controller->HealthStatusWaitQueue);
5698     }
5699 }
5700
5701 /*
5702   DAC960_CheckStatusBuffer verifies that there is room to hold ByteCount
5703   additional bytes in the Combined Status Buffer and grows the buffer if
5704   necessary.  It returns true if there is enough room and false otherwise.
5705 */
5706
5707 static boolean DAC960_CheckStatusBuffer(DAC960_Controller_T *Controller,
5708                                         unsigned int ByteCount)
5709 {
5710   unsigned char *NewStatusBuffer;
5711   if (Controller->InitialStatusLength + 1 +
5712       Controller->CurrentStatusLength + ByteCount + 1 <=
5713       Controller->CombinedStatusBufferLength)
5714     return true;
5715   if (Controller->CombinedStatusBufferLength == 0)
5716     {
5717       unsigned int NewStatusBufferLength = DAC960_InitialStatusBufferSize;
5718       while (NewStatusBufferLength < ByteCount)
5719         NewStatusBufferLength *= 2;
5720       Controller->CombinedStatusBuffer =
5721         (unsigned char *) kmalloc(NewStatusBufferLength, GFP_ATOMIC);
5722       if (Controller->CombinedStatusBuffer == NULL) return false;
5723       Controller->CombinedStatusBufferLength = NewStatusBufferLength;
5724       return true;
5725     }
5726   NewStatusBuffer = (unsigned char *)
5727     kmalloc(2 * Controller->CombinedStatusBufferLength, GFP_ATOMIC);
5728   if (NewStatusBuffer == NULL)
5729     {
5730       DAC960_Warning("Unable to expand Combined Status Buffer - Truncating\n",
5731                      Controller);
5732       return false;
5733     }
5734   memcpy(NewStatusBuffer, Controller->CombinedStatusBuffer,
5735          Controller->CombinedStatusBufferLength);
5736   kfree(Controller->CombinedStatusBuffer);
5737   Controller->CombinedStatusBuffer = NewStatusBuffer;
5738   Controller->CombinedStatusBufferLength *= 2;
5739   Controller->CurrentStatusBuffer =
5740     &NewStatusBuffer[Controller->InitialStatusLength + 1];
5741   return true;
5742 }
5743
5744
5745 /*
5746   DAC960_Message prints Driver Messages.
5747 */
5748
5749 static void DAC960_Message(DAC960_MessageLevel_T MessageLevel,
5750                            unsigned char *Format,
5751                            DAC960_Controller_T *Controller,
5752                            ...)
5753 {
5754   static unsigned char Buffer[DAC960_LineBufferSize];
5755   static boolean BeginningOfLine = true;
5756   va_list Arguments;
5757   int Length = 0;
5758   va_start(Arguments, Controller);
5759   Length = vsprintf(Buffer, Format, Arguments);
5760   va_end(Arguments);
5761   if (Controller == NULL)
5762     printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5763            DAC960_ControllerCount, Buffer);
5764   else if (MessageLevel == DAC960_AnnounceLevel ||
5765            MessageLevel == DAC960_InfoLevel)
5766     {
5767       if (!Controller->ControllerInitialized)
5768         {
5769           if (DAC960_CheckStatusBuffer(Controller, Length))
5770             {
5771               strcpy(&Controller->CombinedStatusBuffer
5772                                   [Controller->InitialStatusLength],
5773                      Buffer);
5774               Controller->InitialStatusLength += Length;
5775               Controller->CurrentStatusBuffer =
5776                 &Controller->CombinedStatusBuffer
5777                              [Controller->InitialStatusLength + 1];
5778             }
5779           if (MessageLevel == DAC960_AnnounceLevel)
5780             {
5781               static int AnnouncementLines = 0;
5782               if (++AnnouncementLines <= 2)
5783                 printk("%sDAC960: %s", DAC960_MessageLevelMap[MessageLevel],
5784                        Buffer);
5785             }
5786           else
5787             {
5788               if (BeginningOfLine)
5789                 {
5790                   if (Buffer[0] != '\n' || Length > 1)
5791                     printk("%sDAC960#%d: %s",
5792                            DAC960_MessageLevelMap[MessageLevel],
5793                            Controller->ControllerNumber, Buffer);
5794                 }
5795               else printk("%s", Buffer);
5796             }
5797         }
5798       else if (DAC960_CheckStatusBuffer(Controller, Length))
5799         {
5800           strcpy(&Controller->CurrentStatusBuffer[
5801                     Controller->CurrentStatusLength], Buffer);
5802           Controller->CurrentStatusLength += Length;
5803         }
5804     }
5805   else if (MessageLevel == DAC960_ProgressLevel)
5806     {
5807       strcpy(Controller->ProgressBuffer, Buffer);
5808       Controller->ProgressBufferLength = Length;
5809       if (Controller->EphemeralProgressMessage)
5810         {
5811           if (time_after_eq(jiffies, Controller->LastProgressReportTime
5812               + DAC960_ProgressReportingInterval))
5813             {
5814               printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5815                      Controller->ControllerNumber, Buffer);
5816               Controller->LastProgressReportTime = jiffies;
5817             }
5818         }
5819       else printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5820                   Controller->ControllerNumber, Buffer);
5821     }
5822   else if (MessageLevel == DAC960_UserCriticalLevel)
5823     {
5824       strcpy(&Controller->UserStatusBuffer[Controller->UserStatusLength],
5825              Buffer);
5826       Controller->UserStatusLength += Length;
5827       if (Buffer[0] != '\n' || Length > 1)
5828         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5829                Controller->ControllerNumber, Buffer);
5830     }
5831   else
5832     {
5833       if (BeginningOfLine)
5834         printk("%sDAC960#%d: %s", DAC960_MessageLevelMap[MessageLevel],
5835                Controller->ControllerNumber, Buffer);
5836       else printk("%s", Buffer);
5837     }
5838   BeginningOfLine = (Buffer[Length-1] == '\n');
5839 }
5840
5841
5842 /*
5843   DAC960_ParsePhysicalDevice parses spaces followed by a Physical Device
5844   Channel:TargetID specification from a User Command string.  It updates
5845   Channel and TargetID and returns true on success and false on failure.
5846 */
5847
5848 static boolean DAC960_ParsePhysicalDevice(DAC960_Controller_T *Controller,
5849                                           char *UserCommandString,
5850                                           unsigned char *Channel,
5851                                           unsigned char *TargetID)
5852 {
5853   char *NewUserCommandString = UserCommandString;
5854   unsigned long XChannel, XTargetID;
5855   while (*UserCommandString == ' ') UserCommandString++;
5856   if (UserCommandString == NewUserCommandString)
5857     return false;
5858   XChannel = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5859   if (NewUserCommandString == UserCommandString ||
5860       *NewUserCommandString != ':' ||
5861       XChannel >= Controller->Channels)
5862     return false;
5863   UserCommandString = ++NewUserCommandString;
5864   XTargetID = simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5865   if (NewUserCommandString == UserCommandString ||
5866       *NewUserCommandString != '\0' ||
5867       XTargetID >= Controller->Targets)
5868     return false;
5869   *Channel = XChannel;
5870   *TargetID = XTargetID;
5871   return true;
5872 }
5873
5874
5875 /*
5876   DAC960_ParseLogicalDrive parses spaces followed by a Logical Drive Number
5877   specification from a User Command string.  It updates LogicalDriveNumber and
5878   returns true on success and false on failure.
5879 */
5880
5881 static boolean DAC960_ParseLogicalDrive(DAC960_Controller_T *Controller,
5882                                         char *UserCommandString,
5883                                         unsigned char *LogicalDriveNumber)
5884 {
5885   char *NewUserCommandString = UserCommandString;
5886   unsigned long XLogicalDriveNumber;
5887   while (*UserCommandString == ' ') UserCommandString++;
5888   if (UserCommandString == NewUserCommandString)
5889     return false;
5890   XLogicalDriveNumber =
5891     simple_strtoul(UserCommandString, &NewUserCommandString, 10);
5892   if (NewUserCommandString == UserCommandString ||
5893       *NewUserCommandString != '\0' ||
5894       XLogicalDriveNumber > DAC960_MaxLogicalDrives - 1)
5895     return false;
5896   *LogicalDriveNumber = XLogicalDriveNumber;
5897   return true;
5898 }
5899
5900
5901 /*
5902   DAC960_V1_SetDeviceState sets the Device State for a Physical Device for
5903   DAC960 V1 Firmware Controllers.
5904 */
5905
5906 static void DAC960_V1_SetDeviceState(DAC960_Controller_T *Controller,
5907                                      DAC960_Command_T *Command,
5908                                      unsigned char Channel,
5909                                      unsigned char TargetID,
5910                                      DAC960_V1_PhysicalDeviceState_T
5911                                        DeviceState,
5912                                      const unsigned char *DeviceStateString)
5913 {
5914   DAC960_V1_CommandMailbox_T *CommandMailbox = &Command->V1.CommandMailbox;
5915   CommandMailbox->Type3D.CommandOpcode = DAC960_V1_StartDevice;
5916   CommandMailbox->Type3D.Channel = Channel;
5917   CommandMailbox->Type3D.TargetID = TargetID;
5918   CommandMailbox->Type3D.DeviceState = DeviceState;
5919   CommandMailbox->Type3D.Modifier = 0;
5920   DAC960_ExecuteCommand(Command);
5921   switch (Command->V1.CommandStatus)
5922     {
5923     case DAC960_V1_NormalCompletion:
5924       DAC960_UserCritical("%s of Physical Device %d:%d Succeeded\n", Controller,
5925                           DeviceStateString, Channel, TargetID);
5926       break;
5927     case DAC960_V1_UnableToStartDevice:
5928       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5929                           "Unable to Start Device\n", Controller,
5930                           DeviceStateString, Channel, TargetID);
5931       break;
5932     case DAC960_V1_NoDeviceAtAddress:
5933       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5934                           "No Device at Address\n", Controller,
5935                           DeviceStateString, Channel, TargetID);
5936       break;
5937     case DAC960_V1_InvalidChannelOrTargetOrModifier:
5938       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5939                           "Invalid Channel or Target or Modifier\n",
5940                           Controller, DeviceStateString, Channel, TargetID);
5941       break;
5942     case DAC960_V1_ChannelBusy:
5943       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5944                           "Channel Busy\n", Controller,
5945                           DeviceStateString, Channel, TargetID);
5946       break;
5947     default:
5948       DAC960_UserCritical("%s of Physical Device %d:%d Failed - "
5949                           "Unexpected Status %04X\n", Controller,
5950                           DeviceStateString, Channel, TargetID,
5951                           Command->V1.CommandStatus);
5952       break;
5953     }
5954 }
5955
5956
5957 /*
5958   DAC960_V1_ExecuteUserCommand executes a User Command for DAC960 V1 Firmware
5959   Controllers.
5960 */
5961
5962 static boolean DAC960_V1_ExecuteUserCommand(DAC960_Controller_T *Controller,
5963                                             unsigned char *UserCommand)
5964 {
5965   DAC960_Command_T *Command;
5966   DAC960_V1_CommandMailbox_T *CommandMailbox;
5967   unsigned long flags;
5968   unsigned char Channel, TargetID, LogicalDriveNumber;
5969
5970   spin_lock_irqsave(&Controller->queue_lock, flags);
5971   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
5972     DAC960_WaitForCommand(Controller);
5973   spin_unlock_irqrestore(&Controller->queue_lock, flags);
5974   Controller->UserStatusLength = 0;
5975   DAC960_V1_ClearCommand(Command);
5976   Command->CommandType = DAC960_ImmediateCommand;
5977   CommandMailbox = &Command->V1.CommandMailbox;
5978   if (strcmp(UserCommand, "flush-cache") == 0)
5979     {
5980       CommandMailbox->Type3.CommandOpcode = DAC960_V1_Flush;
5981       DAC960_ExecuteCommand(Command);
5982       DAC960_UserCritical("Cache Flush Completed\n", Controller);
5983     }
5984   else if (strncmp(UserCommand, "kill", 4) == 0 &&
5985            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
5986                                       &Channel, &TargetID))
5987     {
5988       DAC960_V1_DeviceState_T *DeviceState =
5989         &Controller->V1.DeviceState[Channel][TargetID];
5990       if (DeviceState->Present &&
5991           DeviceState->DeviceType == DAC960_V1_DiskType &&
5992           DeviceState->DeviceState != DAC960_V1_Device_Dead)
5993         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
5994                                  DAC960_V1_Device_Dead, "Kill");
5995       else DAC960_UserCritical("Kill of Physical Device %d:%d Illegal\n",
5996                                Controller, Channel, TargetID);
5997     }
5998   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
5999            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6000                                       &Channel, &TargetID))
6001     {
6002       DAC960_V1_DeviceState_T *DeviceState =
6003         &Controller->V1.DeviceState[Channel][TargetID];
6004       if (DeviceState->Present &&
6005           DeviceState->DeviceType == DAC960_V1_DiskType &&
6006           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6007         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6008                                  DAC960_V1_Device_Online, "Make Online");
6009       else DAC960_UserCritical("Make Online of Physical Device %d:%d Illegal\n",
6010                                Controller, Channel, TargetID);
6011
6012     }
6013   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6014            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6015                                       &Channel, &TargetID))
6016     {
6017       DAC960_V1_DeviceState_T *DeviceState =
6018         &Controller->V1.DeviceState[Channel][TargetID];
6019       if (DeviceState->Present &&
6020           DeviceState->DeviceType == DAC960_V1_DiskType &&
6021           DeviceState->DeviceState == DAC960_V1_Device_Dead)
6022         DAC960_V1_SetDeviceState(Controller, Command, Channel, TargetID,
6023                                  DAC960_V1_Device_Standby, "Make Standby");
6024       else DAC960_UserCritical("Make Standby of Physical "
6025                                "Device %d:%d Illegal\n",
6026                                Controller, Channel, TargetID);
6027     }
6028   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6029            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6030                                       &Channel, &TargetID))
6031     {
6032       CommandMailbox->Type3D.CommandOpcode = DAC960_V1_RebuildAsync;
6033       CommandMailbox->Type3D.Channel = Channel;
6034       CommandMailbox->Type3D.TargetID = TargetID;
6035       DAC960_ExecuteCommand(Command);
6036       switch (Command->V1.CommandStatus)
6037         {
6038         case DAC960_V1_NormalCompletion:
6039           DAC960_UserCritical("Rebuild of Physical Device %d:%d Initiated\n",
6040                               Controller, Channel, TargetID);
6041           break;
6042         case DAC960_V1_AttemptToRebuildOnlineDrive:
6043           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6044                               "Attempt to Rebuild Online or "
6045                               "Unresponsive Drive\n",
6046                               Controller, Channel, TargetID);
6047           break;
6048         case DAC960_V1_NewDiskFailedDuringRebuild:
6049           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6050                               "New Disk Failed During Rebuild\n",
6051                               Controller, Channel, TargetID);
6052           break;
6053         case DAC960_V1_InvalidDeviceAddress:
6054           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6055                               "Invalid Device Address\n",
6056                               Controller, Channel, TargetID);
6057           break;
6058         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6059           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6060                               "Rebuild or Consistency Check Already "
6061                               "in Progress\n", Controller, Channel, TargetID);
6062           break;
6063         default:
6064           DAC960_UserCritical("Rebuild of Physical Device %d:%d Failed - "
6065                               "Unexpected Status %04X\n", Controller,
6066                               Channel, TargetID, Command->V1.CommandStatus);
6067           break;
6068         }
6069     }
6070   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6071            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6072                                     &LogicalDriveNumber))
6073     {
6074       CommandMailbox->Type3C.CommandOpcode = DAC960_V1_CheckConsistencyAsync;
6075       CommandMailbox->Type3C.LogicalDriveNumber = LogicalDriveNumber;
6076       CommandMailbox->Type3C.AutoRestore = true;
6077       DAC960_ExecuteCommand(Command);
6078       switch (Command->V1.CommandStatus)
6079         {
6080         case DAC960_V1_NormalCompletion:
6081           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6082                               "(/dev/rd/c%dd%d) Initiated\n",
6083                               Controller, LogicalDriveNumber,
6084                               Controller->ControllerNumber,
6085                               LogicalDriveNumber);
6086           break;
6087         case DAC960_V1_DependentDiskIsDead:
6088           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6089                               "(/dev/rd/c%dd%d) Failed - "
6090                               "Dependent Physical Device is DEAD\n",
6091                               Controller, LogicalDriveNumber,
6092                               Controller->ControllerNumber,
6093                               LogicalDriveNumber);
6094           break;
6095         case DAC960_V1_InvalidOrNonredundantLogicalDrive:
6096           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6097                               "(/dev/rd/c%dd%d) Failed - "
6098                               "Invalid or Nonredundant Logical Drive\n",
6099                               Controller, LogicalDriveNumber,
6100                               Controller->ControllerNumber,
6101                               LogicalDriveNumber);
6102           break;
6103         case DAC960_V1_RebuildOrCheckAlreadyInProgress:
6104           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6105                               "(/dev/rd/c%dd%d) Failed - Rebuild or "
6106                               "Consistency Check Already in Progress\n",
6107                               Controller, LogicalDriveNumber,
6108                               Controller->ControllerNumber,
6109                               LogicalDriveNumber);
6110           break;
6111         default:
6112           DAC960_UserCritical("Consistency Check of Logical Drive %d "
6113                               "(/dev/rd/c%dd%d) Failed - "
6114                               "Unexpected Status %04X\n",
6115                               Controller, LogicalDriveNumber,
6116                               Controller->ControllerNumber,
6117                               LogicalDriveNumber, Command->V1.CommandStatus);
6118           break;
6119         }
6120     }
6121   else if (strcmp(UserCommand, "cancel-rebuild") == 0 ||
6122            strcmp(UserCommand, "cancel-consistency-check") == 0)
6123     {
6124       /*
6125         the OldRebuildRateConstant is never actually used
6126         once its value is retrieved from the controller.
6127        */
6128       unsigned char *OldRebuildRateConstant;
6129       dma_addr_t OldRebuildRateConstantDMA;
6130
6131       OldRebuildRateConstant = pci_alloc_consistent( Controller->PCIDevice,
6132                 sizeof(char), &OldRebuildRateConstantDMA);
6133       if (OldRebuildRateConstant == NULL) {
6134          DAC960_UserCritical("Cancellation of Rebuild or "
6135                              "Consistency Check Failed - "
6136                              "Out of Memory",
6137                              Controller);
6138          goto failure;
6139       }
6140       CommandMailbox->Type3R.CommandOpcode = DAC960_V1_RebuildControl;
6141       CommandMailbox->Type3R.RebuildRateConstant = 0xFF;
6142       CommandMailbox->Type3R.BusAddress = OldRebuildRateConstantDMA;
6143       DAC960_ExecuteCommand(Command);
6144       switch (Command->V1.CommandStatus)
6145         {
6146         case DAC960_V1_NormalCompletion:
6147           DAC960_UserCritical("Rebuild or Consistency Check Cancelled\n",
6148                               Controller);
6149           break;
6150         default:
6151           DAC960_UserCritical("Cancellation of Rebuild or "
6152                               "Consistency Check Failed - "
6153                               "Unexpected Status %04X\n",
6154                               Controller, Command->V1.CommandStatus);
6155           break;
6156         }
6157 failure:
6158         pci_free_consistent(Controller->PCIDevice, sizeof(char),
6159                 OldRebuildRateConstant, OldRebuildRateConstantDMA);
6160     }
6161   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6162                            Controller, UserCommand);
6163
6164   spin_lock_irqsave(&Controller->queue_lock, flags);
6165   DAC960_DeallocateCommand(Command);
6166   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6167   return true;
6168 }
6169
6170
6171 /*
6172   DAC960_V2_TranslatePhysicalDevice translates a Physical Device Channel and
6173   TargetID into a Logical Device.  It returns true on success and false
6174   on failure.
6175 */
6176
6177 static boolean DAC960_V2_TranslatePhysicalDevice(DAC960_Command_T *Command,
6178                                                  unsigned char Channel,
6179                                                  unsigned char TargetID,
6180                                                  unsigned short
6181                                                    *LogicalDeviceNumber)
6182 {
6183   DAC960_V2_CommandMailbox_T SavedCommandMailbox, *CommandMailbox;
6184   DAC960_Controller_T *Controller =  Command->Controller;
6185
6186   CommandMailbox = &Command->V2.CommandMailbox;
6187   memcpy(&SavedCommandMailbox, CommandMailbox,
6188          sizeof(DAC960_V2_CommandMailbox_T));
6189
6190   CommandMailbox->PhysicalDeviceInfo.CommandOpcode = DAC960_V2_IOCTL;
6191   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6192                                     .DataTransferControllerToHost = true;
6193   CommandMailbox->PhysicalDeviceInfo.CommandControlBits
6194                                     .NoAutoRequestSense = true;
6195   CommandMailbox->PhysicalDeviceInfo.DataTransferSize =
6196     sizeof(DAC960_V2_PhysicalToLogicalDevice_T);
6197   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.TargetID = TargetID;
6198   CommandMailbox->PhysicalDeviceInfo.PhysicalDevice.Channel = Channel;
6199   CommandMailbox->PhysicalDeviceInfo.IOCTL_Opcode =
6200     DAC960_V2_TranslatePhysicalToLogicalDevice;
6201   CommandMailbox->Common.DataTransferMemoryAddress
6202                         .ScatterGatherSegments[0]
6203                         .SegmentDataPointer =
6204                 Controller->V2.PhysicalToLogicalDeviceDMA;
6205   CommandMailbox->Common.DataTransferMemoryAddress
6206                         .ScatterGatherSegments[0]
6207                         .SegmentByteCount =
6208                 CommandMailbox->Common.DataTransferSize;
6209
6210   DAC960_ExecuteCommand(Command);
6211   *LogicalDeviceNumber = Controller->V2.PhysicalToLogicalDevice->LogicalDeviceNumber;
6212
6213   memcpy(CommandMailbox, &SavedCommandMailbox,
6214          sizeof(DAC960_V2_CommandMailbox_T));
6215   return (Command->V2.CommandStatus == DAC960_V2_NormalCompletion);
6216 }
6217
6218
6219 /*
6220   DAC960_V2_ExecuteUserCommand executes a User Command for DAC960 V2 Firmware
6221   Controllers.
6222 */
6223
6224 static boolean DAC960_V2_ExecuteUserCommand(DAC960_Controller_T *Controller,
6225                                             unsigned char *UserCommand)
6226 {
6227   DAC960_Command_T *Command;
6228   DAC960_V2_CommandMailbox_T *CommandMailbox;
6229   unsigned long flags;
6230   unsigned char Channel, TargetID, LogicalDriveNumber;
6231   unsigned short LogicalDeviceNumber;
6232
6233   spin_lock_irqsave(&Controller->queue_lock, flags);
6234   while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6235     DAC960_WaitForCommand(Controller);
6236   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6237   Controller->UserStatusLength = 0;
6238   DAC960_V2_ClearCommand(Command);
6239   Command->CommandType = DAC960_ImmediateCommand;
6240   CommandMailbox = &Command->V2.CommandMailbox;
6241   CommandMailbox->Common.CommandOpcode = DAC960_V2_IOCTL;
6242   CommandMailbox->Common.CommandControlBits.DataTransferControllerToHost = true;
6243   CommandMailbox->Common.CommandControlBits.NoAutoRequestSense = true;
6244   if (strcmp(UserCommand, "flush-cache") == 0)
6245     {
6246       CommandMailbox->DeviceOperation.IOCTL_Opcode = DAC960_V2_PauseDevice;
6247       CommandMailbox->DeviceOperation.OperationDevice =
6248         DAC960_V2_RAID_Controller;
6249       DAC960_ExecuteCommand(Command);
6250       DAC960_UserCritical("Cache Flush Completed\n", Controller);
6251     }
6252   else if (strncmp(UserCommand, "kill", 4) == 0 &&
6253            DAC960_ParsePhysicalDevice(Controller, &UserCommand[4],
6254                                       &Channel, &TargetID) &&
6255            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6256                                              &LogicalDeviceNumber))
6257     {
6258       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6259         LogicalDeviceNumber;
6260       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6261         DAC960_V2_SetDeviceState;
6262       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6263         DAC960_V2_Device_Dead;
6264       DAC960_ExecuteCommand(Command);
6265       DAC960_UserCritical("Kill of Physical Device %d:%d %s\n",
6266                           Controller, Channel, TargetID,
6267                           (Command->V2.CommandStatus
6268                            == DAC960_V2_NormalCompletion
6269                            ? "Succeeded" : "Failed"));
6270     }
6271   else if (strncmp(UserCommand, "make-online", 11) == 0 &&
6272            DAC960_ParsePhysicalDevice(Controller, &UserCommand[11],
6273                                       &Channel, &TargetID) &&
6274            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6275                                              &LogicalDeviceNumber))
6276     {
6277       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6278         LogicalDeviceNumber;
6279       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6280         DAC960_V2_SetDeviceState;
6281       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6282         DAC960_V2_Device_Online;
6283       DAC960_ExecuteCommand(Command);
6284       DAC960_UserCritical("Make Online of Physical Device %d:%d %s\n",
6285                           Controller, Channel, TargetID,
6286                           (Command->V2.CommandStatus
6287                            == DAC960_V2_NormalCompletion
6288                            ? "Succeeded" : "Failed"));
6289     }
6290   else if (strncmp(UserCommand, "make-standby", 12) == 0 &&
6291            DAC960_ParsePhysicalDevice(Controller, &UserCommand[12],
6292                                       &Channel, &TargetID) &&
6293            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6294                                              &LogicalDeviceNumber))
6295     {
6296       CommandMailbox->SetDeviceState.LogicalDevice.LogicalDeviceNumber =
6297         LogicalDeviceNumber;
6298       CommandMailbox->SetDeviceState.IOCTL_Opcode =
6299         DAC960_V2_SetDeviceState;
6300       CommandMailbox->SetDeviceState.DeviceState.PhysicalDeviceState =
6301         DAC960_V2_Device_Standby;
6302       DAC960_ExecuteCommand(Command);
6303       DAC960_UserCritical("Make Standby of Physical Device %d:%d %s\n",
6304                           Controller, Channel, TargetID,
6305                           (Command->V2.CommandStatus
6306                            == DAC960_V2_NormalCompletion
6307                            ? "Succeeded" : "Failed"));
6308     }
6309   else if (strncmp(UserCommand, "rebuild", 7) == 0 &&
6310            DAC960_ParsePhysicalDevice(Controller, &UserCommand[7],
6311                                       &Channel, &TargetID) &&
6312            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6313                                              &LogicalDeviceNumber))
6314     {
6315       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6316         LogicalDeviceNumber;
6317       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6318         DAC960_V2_RebuildDeviceStart;
6319       DAC960_ExecuteCommand(Command);
6320       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6321                           Controller, Channel, TargetID,
6322                           (Command->V2.CommandStatus
6323                            == DAC960_V2_NormalCompletion
6324                            ? "Initiated" : "Not Initiated"));
6325     }
6326   else if (strncmp(UserCommand, "cancel-rebuild", 14) == 0 &&
6327            DAC960_ParsePhysicalDevice(Controller, &UserCommand[14],
6328                                       &Channel, &TargetID) &&
6329            DAC960_V2_TranslatePhysicalDevice(Command, Channel, TargetID,
6330                                              &LogicalDeviceNumber))
6331     {
6332       CommandMailbox->LogicalDeviceInfo.LogicalDevice.LogicalDeviceNumber =
6333         LogicalDeviceNumber;
6334       CommandMailbox->LogicalDeviceInfo.IOCTL_Opcode =
6335         DAC960_V2_RebuildDeviceStop;
6336       DAC960_ExecuteCommand(Command);
6337       DAC960_UserCritical("Rebuild of Physical Device %d:%d %s\n",
6338                           Controller, Channel, TargetID,
6339                           (Command->V2.CommandStatus
6340                            == DAC960_V2_NormalCompletion
6341                            ? "Cancelled" : "Not Cancelled"));
6342     }
6343   else if (strncmp(UserCommand, "check-consistency", 17) == 0 &&
6344            DAC960_ParseLogicalDrive(Controller, &UserCommand[17],
6345                                     &LogicalDriveNumber))
6346     {
6347       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6348         LogicalDriveNumber;
6349       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6350         DAC960_V2_ConsistencyCheckStart;
6351       CommandMailbox->ConsistencyCheck.RestoreConsistency = true;
6352       CommandMailbox->ConsistencyCheck.InitializedAreaOnly = false;
6353       DAC960_ExecuteCommand(Command);
6354       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6355                           "(/dev/rd/c%dd%d) %s\n",
6356                           Controller, LogicalDriveNumber,
6357                           Controller->ControllerNumber,
6358                           LogicalDriveNumber,
6359                           (Command->V2.CommandStatus
6360                            == DAC960_V2_NormalCompletion
6361                            ? "Initiated" : "Not Initiated"));
6362     }
6363   else if (strncmp(UserCommand, "cancel-consistency-check", 24) == 0 &&
6364            DAC960_ParseLogicalDrive(Controller, &UserCommand[24],
6365                                     &LogicalDriveNumber))
6366     {
6367       CommandMailbox->ConsistencyCheck.LogicalDevice.LogicalDeviceNumber =
6368         LogicalDriveNumber;
6369       CommandMailbox->ConsistencyCheck.IOCTL_Opcode =
6370         DAC960_V2_ConsistencyCheckStop;
6371       DAC960_ExecuteCommand(Command);
6372       DAC960_UserCritical("Consistency Check of Logical Drive %d "
6373                           "(/dev/rd/c%dd%d) %s\n",
6374                           Controller, LogicalDriveNumber,
6375                           Controller->ControllerNumber,
6376                           LogicalDriveNumber,
6377                           (Command->V2.CommandStatus
6378                            == DAC960_V2_NormalCompletion
6379                            ? "Cancelled" : "Not Cancelled"));
6380     }
6381   else if (strcmp(UserCommand, "perform-discovery") == 0)
6382     {
6383       CommandMailbox->Common.IOCTL_Opcode = DAC960_V2_StartDiscovery;
6384       DAC960_ExecuteCommand(Command);
6385       DAC960_UserCritical("Discovery %s\n", Controller,
6386                           (Command->V2.CommandStatus
6387                            == DAC960_V2_NormalCompletion
6388                            ? "Initiated" : "Not Initiated"));
6389       if (Command->V2.CommandStatus == DAC960_V2_NormalCompletion)
6390         {
6391           CommandMailbox->ControllerInfo.CommandOpcode = DAC960_V2_IOCTL;
6392           CommandMailbox->ControllerInfo.CommandControlBits
6393                                         .DataTransferControllerToHost = true;
6394           CommandMailbox->ControllerInfo.CommandControlBits
6395                                         .NoAutoRequestSense = true;
6396           CommandMailbox->ControllerInfo.DataTransferSize =
6397             sizeof(DAC960_V2_ControllerInfo_T);
6398           CommandMailbox->ControllerInfo.ControllerNumber = 0;
6399           CommandMailbox->ControllerInfo.IOCTL_Opcode =
6400             DAC960_V2_GetControllerInfo;
6401           /*
6402            * How does this NOT race with the queued Monitoring
6403            * usage of this structure?
6404            */
6405           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6406                                         .ScatterGatherSegments[0]
6407                                         .SegmentDataPointer =
6408             Controller->V2.NewControllerInformationDMA;
6409           CommandMailbox->ControllerInfo.DataTransferMemoryAddress
6410                                         .ScatterGatherSegments[0]
6411                                         .SegmentByteCount =
6412             CommandMailbox->ControllerInfo.DataTransferSize;
6413           DAC960_ExecuteCommand(Command);
6414           while (Controller->V2.NewControllerInformation->PhysicalScanActive)
6415             {
6416               DAC960_ExecuteCommand(Command);
6417               sleep_on_timeout(&Controller->CommandWaitQueue, HZ);
6418             }
6419           DAC960_UserCritical("Discovery Completed\n", Controller);
6420         }
6421     }
6422   else if (strcmp(UserCommand, "suppress-enclosure-messages") == 0)
6423     Controller->SuppressEnclosureMessages = true;
6424   else DAC960_UserCritical("Illegal User Command: '%s'\n",
6425                            Controller, UserCommand);
6426
6427   spin_lock_irqsave(&Controller->queue_lock, flags);
6428   DAC960_DeallocateCommand(Command);
6429   spin_unlock_irqrestore(&Controller->queue_lock, flags);
6430   return true;
6431 }
6432
6433
6434 /*
6435   DAC960_ProcReadStatus implements reading /proc/rd/status.
6436 */
6437
6438 static int DAC960_ProcReadStatus(char *Page, char **Start, off_t Offset,
6439                                  int Count, int *EOF, void *Data)
6440 {
6441   unsigned char *StatusMessage = "OK\n";
6442   int ControllerNumber, BytesAvailable;
6443   for (ControllerNumber = 0;
6444        ControllerNumber < DAC960_ControllerCount;
6445        ControllerNumber++)
6446     {
6447       DAC960_Controller_T *Controller = DAC960_Controllers[ControllerNumber];
6448       if (Controller == NULL) continue;
6449       if (Controller->MonitoringAlertMode)
6450         {
6451           StatusMessage = "ALERT\n";
6452           break;
6453         }
6454     }
6455   BytesAvailable = strlen(StatusMessage) - Offset;
6456   if (Count >= BytesAvailable)
6457     {
6458       Count = BytesAvailable;
6459       *EOF = true;
6460     }
6461   if (Count <= 0) return 0;
6462   *Start = Page;
6463   memcpy(Page, &StatusMessage[Offset], Count);
6464   return Count;
6465 }
6466
6467
6468 /*
6469   DAC960_ProcReadInitialStatus implements reading /proc/rd/cN/initial_status.
6470 */
6471
6472 static int DAC960_ProcReadInitialStatus(char *Page, char **Start, off_t Offset,
6473                                         int Count, int *EOF, void *Data)
6474 {
6475   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6476   int BytesAvailable = Controller->InitialStatusLength - Offset;
6477   if (Count >= BytesAvailable)
6478     {
6479       Count = BytesAvailable;
6480       *EOF = true;
6481     }
6482   if (Count <= 0) return 0;
6483   *Start = Page;
6484   memcpy(Page, &Controller->CombinedStatusBuffer[Offset], Count);
6485   return Count;
6486 }
6487
6488
6489 /*
6490   DAC960_ProcReadCurrentStatus implements reading /proc/rd/cN/current_status.
6491 */
6492
6493 static int DAC960_ProcReadCurrentStatus(char *Page, char **Start, off_t Offset,
6494                                         int Count, int *EOF, void *Data)
6495 {
6496   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6497   unsigned char *StatusMessage =
6498     "No Rebuild or Consistency Check in Progress\n";
6499   int ProgressMessageLength = strlen(StatusMessage);
6500   int BytesAvailable;
6501   if (jiffies != Controller->LastCurrentStatusTime)
6502     {
6503       Controller->CurrentStatusLength = 0;
6504       DAC960_AnnounceDriver(Controller);
6505       DAC960_ReportControllerConfiguration(Controller);
6506       DAC960_ReportDeviceConfiguration(Controller);
6507       if (Controller->ProgressBufferLength > 0)
6508         ProgressMessageLength = Controller->ProgressBufferLength;
6509       if (DAC960_CheckStatusBuffer(Controller, 2 + ProgressMessageLength))
6510         {
6511           unsigned char *CurrentStatusBuffer = Controller->CurrentStatusBuffer;
6512           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6513           CurrentStatusBuffer[Controller->CurrentStatusLength++] = ' ';
6514           if (Controller->ProgressBufferLength > 0)
6515             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6516                    Controller->ProgressBuffer);
6517           else
6518             strcpy(&CurrentStatusBuffer[Controller->CurrentStatusLength],
6519                    StatusMessage);
6520           Controller->CurrentStatusLength += ProgressMessageLength;
6521         }
6522       Controller->LastCurrentStatusTime = jiffies;
6523     }
6524   BytesAvailable = Controller->CurrentStatusLength - Offset;
6525   if (Count >= BytesAvailable)
6526     {
6527       Count = BytesAvailable;
6528       *EOF = true;
6529     }
6530   if (Count <= 0) return 0;
6531   *Start = Page;
6532   memcpy(Page, &Controller->CurrentStatusBuffer[Offset], Count);
6533   return Count;
6534 }
6535
6536
6537 /*
6538   DAC960_ProcReadUserCommand implements reading /proc/rd/cN/user_command.
6539 */
6540
6541 static int DAC960_ProcReadUserCommand(char *Page, char **Start, off_t Offset,
6542                                       int Count, int *EOF, void *Data)
6543 {
6544   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6545   int BytesAvailable = Controller->UserStatusLength - Offset;
6546   if (Count >= BytesAvailable)
6547     {
6548       Count = BytesAvailable;
6549       *EOF = true;
6550     }
6551   if (Count <= 0) return 0;
6552   *Start = Page;
6553   memcpy(Page, &Controller->UserStatusBuffer[Offset], Count);
6554   return Count;
6555 }
6556
6557
6558 /*
6559   DAC960_ProcWriteUserCommand implements writing /proc/rd/cN/user_command.
6560 */
6561
6562 static int DAC960_ProcWriteUserCommand(struct file *file,
6563                                        const char __user *Buffer,
6564                                        unsigned long Count, void *Data)
6565 {
6566   DAC960_Controller_T *Controller = (DAC960_Controller_T *) Data;
6567   unsigned char CommandBuffer[80];
6568   int Length;
6569   if (Count > sizeof(CommandBuffer)-1) return -EINVAL;
6570   if (copy_from_user(CommandBuffer, Buffer, Count)) return -EFAULT;
6571   CommandBuffer[Count] = '\0';
6572   Length = strlen(CommandBuffer);
6573   if (CommandBuffer[Length-1] == '\n')
6574     CommandBuffer[--Length] = '\0';
6575   if (Controller->FirmwareType == DAC960_V1_Controller)
6576     return (DAC960_V1_ExecuteUserCommand(Controller, CommandBuffer)
6577             ? Count : -EBUSY);
6578   else
6579     return (DAC960_V2_ExecuteUserCommand(Controller, CommandBuffer)
6580             ? Count : -EBUSY);
6581 }
6582
6583
6584 /*
6585   DAC960_CreateProcEntries creates the /proc/rd/... entries for the
6586   DAC960 Driver.
6587 */
6588
6589 static void DAC960_CreateProcEntries(DAC960_Controller_T *Controller)
6590 {
6591         struct proc_dir_entry *StatusProcEntry;
6592         struct proc_dir_entry *ControllerProcEntry;
6593         struct proc_dir_entry *UserCommandProcEntry;
6594
6595         if (DAC960_ProcDirectoryEntry == NULL) {
6596                 DAC960_ProcDirectoryEntry = proc_mkdir("rd", NULL);
6597                 StatusProcEntry = create_proc_read_entry("status", 0,
6598                                            DAC960_ProcDirectoryEntry,
6599                                            DAC960_ProcReadStatus, NULL);
6600         }
6601
6602       sprintf(Controller->ControllerName, "c%d", Controller->ControllerNumber);
6603       ControllerProcEntry = proc_mkdir(Controller->ControllerName,
6604                                        DAC960_ProcDirectoryEntry);
6605       create_proc_read_entry("initial_status", 0, ControllerProcEntry,
6606                              DAC960_ProcReadInitialStatus, Controller);
6607       create_proc_read_entry("current_status", 0, ControllerProcEntry,
6608                              DAC960_ProcReadCurrentStatus, Controller);
6609       UserCommandProcEntry =
6610         create_proc_read_entry("user_command", S_IWUSR | S_IRUSR,
6611                                ControllerProcEntry, DAC960_ProcReadUserCommand,
6612                                Controller);
6613       UserCommandProcEntry->write_proc = DAC960_ProcWriteUserCommand;
6614       Controller->ControllerProcEntry = ControllerProcEntry;
6615 }
6616
6617
6618 /*
6619   DAC960_DestroyProcEntries destroys the /proc/rd/... entries for the
6620   DAC960 Driver.
6621 */
6622
6623 static void DAC960_DestroyProcEntries(DAC960_Controller_T *Controller)
6624 {
6625       if (Controller->ControllerProcEntry == NULL)
6626               return;
6627       remove_proc_entry("initial_status", Controller->ControllerProcEntry);
6628       remove_proc_entry("current_status", Controller->ControllerProcEntry);
6629       remove_proc_entry("user_command", Controller->ControllerProcEntry);
6630       remove_proc_entry(Controller->ControllerName, DAC960_ProcDirectoryEntry);
6631       Controller->ControllerProcEntry = NULL;
6632 }
6633
6634 #ifdef DAC960_GAM_MINOR
6635
6636 /*
6637  * DAC960_gam_ioctl is the ioctl function for performing RAID operations.
6638 */
6639
6640 static int DAC960_gam_ioctl(struct inode *inode, struct file *file,
6641                             unsigned int Request, unsigned long Argument)
6642 {
6643   int ErrorCode = 0;
6644   if (!capable(CAP_SYS_ADMIN)) return -EACCES;
6645   switch (Request)
6646     {
6647     case DAC960_IOCTL_GET_CONTROLLER_COUNT:
6648       return DAC960_ControllerCount;
6649     case DAC960_IOCTL_GET_CONTROLLER_INFO:
6650       {
6651         DAC960_ControllerInfo_T __user *UserSpaceControllerInfo =
6652           (DAC960_ControllerInfo_T __user *) Argument;
6653         DAC960_ControllerInfo_T ControllerInfo;
6654         DAC960_Controller_T *Controller;
6655         int ControllerNumber;
6656         if (UserSpaceControllerInfo == NULL) return -EINVAL;
6657         ErrorCode = get_user(ControllerNumber,
6658                              &UserSpaceControllerInfo->ControllerNumber);
6659         if (ErrorCode != 0) return ErrorCode;
6660         if (ControllerNumber < 0 ||
6661             ControllerNumber > DAC960_ControllerCount - 1)
6662           return -ENXIO;
6663         Controller = DAC960_Controllers[ControllerNumber];
6664         if (Controller == NULL) return -ENXIO;
6665         memset(&ControllerInfo, 0, sizeof(DAC960_ControllerInfo_T));
6666         ControllerInfo.ControllerNumber = ControllerNumber;
6667         ControllerInfo.FirmwareType = Controller->FirmwareType;
6668         ControllerInfo.Channels = Controller->Channels;
6669         ControllerInfo.Targets = Controller->Targets;
6670         ControllerInfo.PCI_Bus = Controller->Bus;
6671         ControllerInfo.PCI_Device = Controller->Device;
6672         ControllerInfo.PCI_Function = Controller->Function;
6673         ControllerInfo.IRQ_Channel = Controller->IRQ_Channel;
6674         ControllerInfo.PCI_Address = Controller->PCI_Address;
6675         strcpy(ControllerInfo.ModelName, Controller->ModelName);
6676         strcpy(ControllerInfo.FirmwareVersion, Controller->FirmwareVersion);
6677         return (copy_to_user(UserSpaceControllerInfo, &ControllerInfo,
6678                              sizeof(DAC960_ControllerInfo_T)) ? -EFAULT : 0);
6679       }
6680     case DAC960_IOCTL_V1_EXECUTE_COMMAND:
6681       {
6682         DAC960_V1_UserCommand_T __user *UserSpaceUserCommand =
6683           (DAC960_V1_UserCommand_T __user *) Argument;
6684         DAC960_V1_UserCommand_T UserCommand;
6685         DAC960_Controller_T *Controller;
6686         DAC960_Command_T *Command = NULL;
6687         DAC960_V1_CommandOpcode_T CommandOpcode;
6688         DAC960_V1_CommandStatus_T CommandStatus;
6689         DAC960_V1_DCDB_T DCDB;
6690         DAC960_V1_DCDB_T *DCDB_IOBUF = NULL;
6691         dma_addr_t      DCDB_IOBUFDMA;
6692         unsigned long flags;
6693         int ControllerNumber, DataTransferLength;
6694         unsigned char *DataTransferBuffer = NULL;
6695         dma_addr_t DataTransferBufferDMA;
6696         if (UserSpaceUserCommand == NULL) return -EINVAL;
6697         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6698                                    sizeof(DAC960_V1_UserCommand_T))) {
6699                 ErrorCode = -EFAULT;
6700                 goto Failure1a;
6701         }
6702         ControllerNumber = UserCommand.ControllerNumber;
6703         if (ControllerNumber < 0 ||
6704             ControllerNumber > DAC960_ControllerCount - 1)
6705           return -ENXIO;
6706         Controller = DAC960_Controllers[ControllerNumber];
6707         if (Controller == NULL) return -ENXIO;
6708         if (Controller->FirmwareType != DAC960_V1_Controller) return -EINVAL;
6709         CommandOpcode = UserCommand.CommandMailbox.Common.CommandOpcode;
6710         DataTransferLength = UserCommand.DataTransferLength;
6711         if (CommandOpcode & 0x80) return -EINVAL;
6712         if (CommandOpcode == DAC960_V1_DCDB)
6713           {
6714             if (copy_from_user(&DCDB, UserCommand.DCDB,
6715                                sizeof(DAC960_V1_DCDB_T))) {
6716                 ErrorCode = -EFAULT;
6717                 goto Failure1a;
6718             }
6719             if (DCDB.Channel >= DAC960_V1_MaxChannels) return -EINVAL;
6720             if (!((DataTransferLength == 0 &&
6721                    DCDB.Direction
6722                    == DAC960_V1_DCDB_NoDataTransfer) ||
6723                   (DataTransferLength > 0 &&
6724                    DCDB.Direction
6725                    == DAC960_V1_DCDB_DataTransferDeviceToSystem) ||
6726                   (DataTransferLength < 0 &&
6727                    DCDB.Direction
6728                    == DAC960_V1_DCDB_DataTransferSystemToDevice)))
6729               return -EINVAL;
6730             if (((DCDB.TransferLengthHigh4 << 16) | DCDB.TransferLength)
6731                 != abs(DataTransferLength))
6732               return -EINVAL;
6733             DCDB_IOBUF = pci_alloc_consistent(Controller->PCIDevice,
6734                         sizeof(DAC960_V1_DCDB_T), &DCDB_IOBUFDMA);
6735             if (DCDB_IOBUF == NULL)
6736                         return -ENOMEM;
6737           }
6738         if (DataTransferLength > 0)
6739           {
6740             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6741                                 DataTransferLength, &DataTransferBufferDMA);
6742             if (DataTransferBuffer == NULL) {
6743                 ErrorCode = -ENOMEM;
6744                 goto Failure1;
6745             }
6746             memset(DataTransferBuffer, 0, DataTransferLength);
6747           }
6748         else if (DataTransferLength < 0)
6749           {
6750             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6751                                 -DataTransferLength, &DataTransferBufferDMA);
6752             if (DataTransferBuffer == NULL) {
6753                 ErrorCode = -ENOMEM;
6754                 goto Failure1;
6755             }
6756             if (copy_from_user(DataTransferBuffer,
6757                                UserCommand.DataTransferBuffer,
6758                                -DataTransferLength)) {
6759                 ErrorCode = -EFAULT;
6760                 goto Failure1;
6761             }
6762           }
6763         if (CommandOpcode == DAC960_V1_DCDB)
6764           {
6765             spin_lock_irqsave(&Controller->queue_lock, flags);
6766             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6767               DAC960_WaitForCommand(Controller);
6768             while (Controller->V1.DirectCommandActive[DCDB.Channel]
6769                                                      [DCDB.TargetID])
6770               {
6771                 spin_unlock_irq(&Controller->queue_lock);
6772                 __wait_event(Controller->CommandWaitQueue,
6773                              !Controller->V1.DirectCommandActive
6774                                              [DCDB.Channel][DCDB.TargetID]);
6775                 spin_lock_irq(&Controller->queue_lock);
6776               }
6777             Controller->V1.DirectCommandActive[DCDB.Channel]
6778                                               [DCDB.TargetID] = true;
6779             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6780             DAC960_V1_ClearCommand(Command);
6781             Command->CommandType = DAC960_ImmediateCommand;
6782             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6783                    sizeof(DAC960_V1_CommandMailbox_T));
6784             Command->V1.CommandMailbox.Type3.BusAddress = DCDB_IOBUFDMA;
6785             DCDB.BusAddress = DataTransferBufferDMA;
6786             memcpy(DCDB_IOBUF, &DCDB, sizeof(DAC960_V1_DCDB_T));
6787           }
6788         else
6789           {
6790             spin_lock_irqsave(&Controller->queue_lock, flags);
6791             while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6792               DAC960_WaitForCommand(Controller);
6793             spin_unlock_irqrestore(&Controller->queue_lock, flags);
6794             DAC960_V1_ClearCommand(Command);
6795             Command->CommandType = DAC960_ImmediateCommand;
6796             memcpy(&Command->V1.CommandMailbox, &UserCommand.CommandMailbox,
6797                    sizeof(DAC960_V1_CommandMailbox_T));
6798             if (DataTransferBuffer != NULL)
6799               Command->V1.CommandMailbox.Type3.BusAddress =
6800                 DataTransferBufferDMA;
6801           }
6802         DAC960_ExecuteCommand(Command);
6803         CommandStatus = Command->V1.CommandStatus;
6804         spin_lock_irqsave(&Controller->queue_lock, flags);
6805         DAC960_DeallocateCommand(Command);
6806         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6807         if (DataTransferLength > 0)
6808           {
6809             if (copy_to_user(UserCommand.DataTransferBuffer,
6810                              DataTransferBuffer, DataTransferLength)) {
6811                 ErrorCode = -EFAULT;
6812                 goto Failure1;
6813             }
6814           }
6815         if (CommandOpcode == DAC960_V1_DCDB)
6816           {
6817             /*
6818               I don't believe Target or Channel in the DCDB_IOBUF
6819               should be any different from the contents of DCDB.
6820              */
6821             Controller->V1.DirectCommandActive[DCDB.Channel]
6822                                               [DCDB.TargetID] = false;
6823             if (copy_to_user(UserCommand.DCDB, DCDB_IOBUF,
6824                              sizeof(DAC960_V1_DCDB_T))) {
6825                 ErrorCode = -EFAULT;
6826                 goto Failure1;
6827             }
6828           }
6829         ErrorCode = CommandStatus;
6830       Failure1:
6831         if (DataTransferBuffer != NULL)
6832           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6833                         DataTransferBuffer, DataTransferBufferDMA);
6834         if (DCDB_IOBUF != NULL)
6835           pci_free_consistent(Controller->PCIDevice, sizeof(DAC960_V1_DCDB_T),
6836                         DCDB_IOBUF, DCDB_IOBUFDMA);
6837       Failure1a:
6838         return ErrorCode;
6839       }
6840     case DAC960_IOCTL_V2_EXECUTE_COMMAND:
6841       {
6842         DAC960_V2_UserCommand_T __user *UserSpaceUserCommand =
6843           (DAC960_V2_UserCommand_T __user *) Argument;
6844         DAC960_V2_UserCommand_T UserCommand;
6845         DAC960_Controller_T *Controller;
6846         DAC960_Command_T *Command = NULL;
6847         DAC960_V2_CommandMailbox_T *CommandMailbox;
6848         DAC960_V2_CommandStatus_T CommandStatus;
6849         unsigned long flags;
6850         int ControllerNumber, DataTransferLength;
6851         int DataTransferResidue, RequestSenseLength;
6852         unsigned char *DataTransferBuffer = NULL;
6853         dma_addr_t DataTransferBufferDMA;
6854         unsigned char *RequestSenseBuffer = NULL;
6855         dma_addr_t RequestSenseBufferDMA;
6856         if (UserSpaceUserCommand == NULL) return -EINVAL;
6857         if (copy_from_user(&UserCommand, UserSpaceUserCommand,
6858                            sizeof(DAC960_V2_UserCommand_T))) {
6859                 ErrorCode = -EFAULT;
6860                 goto Failure2a;
6861         }
6862         ControllerNumber = UserCommand.ControllerNumber;
6863         if (ControllerNumber < 0 ||
6864             ControllerNumber > DAC960_ControllerCount - 1)
6865           return -ENXIO;
6866         Controller = DAC960_Controllers[ControllerNumber];
6867         if (Controller == NULL) return -ENXIO;
6868         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
6869         DataTransferLength = UserCommand.DataTransferLength;
6870         if (DataTransferLength > 0)
6871           {
6872             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6873                                 DataTransferLength, &DataTransferBufferDMA);
6874             if (DataTransferBuffer == NULL) return -ENOMEM;
6875             memset(DataTransferBuffer, 0, DataTransferLength);
6876           }
6877         else if (DataTransferLength < 0)
6878           {
6879             DataTransferBuffer = pci_alloc_consistent(Controller->PCIDevice,
6880                                 -DataTransferLength, &DataTransferBufferDMA);
6881             if (DataTransferBuffer == NULL) return -ENOMEM;
6882             if (copy_from_user(DataTransferBuffer,
6883                                UserCommand.DataTransferBuffer,
6884                                -DataTransferLength)) {
6885                 ErrorCode = -EFAULT;
6886                 goto Failure2;
6887             }
6888           }
6889         RequestSenseLength = UserCommand.RequestSenseLength;
6890         if (RequestSenseLength > 0)
6891           {
6892             RequestSenseBuffer = pci_alloc_consistent(Controller->PCIDevice,
6893                         RequestSenseLength, &RequestSenseBufferDMA);
6894             if (RequestSenseBuffer == NULL)
6895               {
6896                 ErrorCode = -ENOMEM;
6897                 goto Failure2;
6898               }
6899             memset(RequestSenseBuffer, 0, RequestSenseLength);
6900           }
6901         spin_lock_irqsave(&Controller->queue_lock, flags);
6902         while ((Command = DAC960_AllocateCommand(Controller)) == NULL)
6903           DAC960_WaitForCommand(Controller);
6904         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6905         DAC960_V2_ClearCommand(Command);
6906         Command->CommandType = DAC960_ImmediateCommand;
6907         CommandMailbox = &Command->V2.CommandMailbox;
6908         memcpy(CommandMailbox, &UserCommand.CommandMailbox,
6909                sizeof(DAC960_V2_CommandMailbox_T));
6910         CommandMailbox->Common.CommandControlBits
6911                               .AdditionalScatterGatherListMemory = false;
6912         CommandMailbox->Common.CommandControlBits
6913                               .NoAutoRequestSense = true;
6914         CommandMailbox->Common.DataTransferSize = 0;
6915         CommandMailbox->Common.DataTransferPageNumber = 0;
6916         memset(&CommandMailbox->Common.DataTransferMemoryAddress, 0,
6917                sizeof(DAC960_V2_DataTransferMemoryAddress_T));
6918         if (DataTransferLength != 0)
6919           {
6920             if (DataTransferLength > 0)
6921               {
6922                 CommandMailbox->Common.CommandControlBits
6923                                       .DataTransferControllerToHost = true;
6924                 CommandMailbox->Common.DataTransferSize = DataTransferLength;
6925               }
6926             else
6927               {
6928                 CommandMailbox->Common.CommandControlBits
6929                                       .DataTransferControllerToHost = false;
6930                 CommandMailbox->Common.DataTransferSize = -DataTransferLength;
6931               }
6932             CommandMailbox->Common.DataTransferMemoryAddress
6933                                   .ScatterGatherSegments[0]
6934                                   .SegmentDataPointer = DataTransferBufferDMA;
6935             CommandMailbox->Common.DataTransferMemoryAddress
6936                                   .ScatterGatherSegments[0]
6937                                   .SegmentByteCount =
6938               CommandMailbox->Common.DataTransferSize;
6939           }
6940         if (RequestSenseLength > 0)
6941           {
6942             CommandMailbox->Common.CommandControlBits
6943                                   .NoAutoRequestSense = false;
6944             CommandMailbox->Common.RequestSenseSize = RequestSenseLength;
6945             CommandMailbox->Common.RequestSenseBusAddress =
6946                                                         RequestSenseBufferDMA;
6947           }
6948         DAC960_ExecuteCommand(Command);
6949         CommandStatus = Command->V2.CommandStatus;
6950         RequestSenseLength = Command->V2.RequestSenseLength;
6951         DataTransferResidue = Command->V2.DataTransferResidue;
6952         spin_lock_irqsave(&Controller->queue_lock, flags);
6953         DAC960_DeallocateCommand(Command);
6954         spin_unlock_irqrestore(&Controller->queue_lock, flags);
6955         if (RequestSenseLength > UserCommand.RequestSenseLength)
6956           RequestSenseLength = UserCommand.RequestSenseLength;
6957         if (copy_to_user(&UserSpaceUserCommand->DataTransferLength,
6958                                  &DataTransferResidue,
6959                                  sizeof(DataTransferResidue))) {
6960                 ErrorCode = -EFAULT;
6961                 goto Failure2;
6962         }
6963         if (copy_to_user(&UserSpaceUserCommand->RequestSenseLength,
6964                          &RequestSenseLength, sizeof(RequestSenseLength))) {
6965                 ErrorCode = -EFAULT;
6966                 goto Failure2;
6967         }
6968         if (DataTransferLength > 0)
6969           {
6970             if (copy_to_user(UserCommand.DataTransferBuffer,
6971                              DataTransferBuffer, DataTransferLength)) {
6972                 ErrorCode = -EFAULT;
6973                 goto Failure2;
6974             }
6975           }
6976         if (RequestSenseLength > 0)
6977           {
6978             if (copy_to_user(UserCommand.RequestSenseBuffer,
6979                              RequestSenseBuffer, RequestSenseLength)) {
6980                 ErrorCode = -EFAULT;
6981                 goto Failure2;
6982             }
6983           }
6984         ErrorCode = CommandStatus;
6985       Failure2:
6986           pci_free_consistent(Controller->PCIDevice, abs(DataTransferLength),
6987                 DataTransferBuffer, DataTransferBufferDMA);
6988         if (RequestSenseBuffer != NULL)
6989           pci_free_consistent(Controller->PCIDevice, RequestSenseLength,
6990                 RequestSenseBuffer, RequestSenseBufferDMA);
6991       Failure2a:
6992         return ErrorCode;
6993       }
6994     case DAC960_IOCTL_V2_GET_HEALTH_STATUS:
6995       {
6996         DAC960_V2_GetHealthStatus_T __user *UserSpaceGetHealthStatus =
6997           (DAC960_V2_GetHealthStatus_T __user *) Argument;
6998         DAC960_V2_GetHealthStatus_T GetHealthStatus;
6999         DAC960_V2_HealthStatusBuffer_T HealthStatusBuffer;
7000         DAC960_Controller_T *Controller;
7001         int ControllerNumber;
7002         if (UserSpaceGetHealthStatus == NULL) return -EINVAL;
7003         if (copy_from_user(&GetHealthStatus, UserSpaceGetHealthStatus,
7004                            sizeof(DAC960_V2_GetHealthStatus_T)))
7005                 return -EFAULT;
7006         ControllerNumber = GetHealthStatus.ControllerNumber;
7007         if (ControllerNumber < 0 ||
7008             ControllerNumber > DAC960_ControllerCount - 1)
7009           return -ENXIO;
7010         Controller = DAC960_Controllers[ControllerNumber];
7011         if (Controller == NULL) return -ENXIO;
7012         if (Controller->FirmwareType != DAC960_V2_Controller) return -EINVAL;
7013         if (copy_from_user(&HealthStatusBuffer,
7014                            GetHealthStatus.HealthStatusBuffer,
7015                            sizeof(DAC960_V2_HealthStatusBuffer_T)))
7016                 return -EFAULT;
7017         while (Controller->V2.HealthStatusBuffer->StatusChangeCounter
7018                == HealthStatusBuffer.StatusChangeCounter &&
7019                Controller->V2.HealthStatusBuffer->NextEventSequenceNumber
7020                == HealthStatusBuffer.NextEventSequenceNumber)
7021           {
7022             interruptible_sleep_on_timeout(&Controller->HealthStatusWaitQueue,
7023                                            DAC960_MonitoringTimerInterval);
7024             if (signal_pending(current)) return -EINTR;
7025           }
7026         if (copy_to_user(GetHealthStatus.HealthStatusBuffer,
7027                          Controller->V2.HealthStatusBuffer,
7028                          sizeof(DAC960_V2_HealthStatusBuffer_T)))
7029                 return -EFAULT;
7030         return 0;
7031       }
7032     }
7033   return -EINVAL;
7034 }
7035
7036 static struct file_operations DAC960_gam_fops = {
7037         .owner          = THIS_MODULE,
7038         .ioctl          = DAC960_gam_ioctl
7039 };
7040
7041 static struct miscdevice DAC960_gam_dev = {
7042         DAC960_GAM_MINOR,
7043         "dac960_gam",
7044         &DAC960_gam_fops
7045 };
7046
7047 static int DAC960_gam_init(void)
7048 {
7049         int ret;
7050
7051         ret = misc_register(&DAC960_gam_dev);
7052         if (ret)
7053                 printk(KERN_ERR "DAC960_gam: can't misc_register on minor %d\n", DAC960_GAM_MINOR);
7054         return ret;
7055 }
7056
7057 static void DAC960_gam_cleanup(void)
7058 {
7059         misc_deregister(&DAC960_gam_dev);
7060 }
7061
7062 #endif /* DAC960_GAM_MINOR */
7063
7064 static struct DAC960_privdata DAC960_GEM_privdata = {
7065         .HardwareType =         DAC960_GEM_Controller,
7066         .FirmwareType   =       DAC960_V2_Controller,
7067         .InterruptHandler =     DAC960_GEM_InterruptHandler,
7068         .MemoryWindowSize =     DAC960_GEM_RegisterWindowSize,
7069 };
7070
7071
7072 static struct DAC960_privdata DAC960_BA_privdata = {
7073         .HardwareType =         DAC960_BA_Controller,
7074         .FirmwareType   =       DAC960_V2_Controller,
7075         .InterruptHandler =     DAC960_BA_InterruptHandler,
7076         .MemoryWindowSize =     DAC960_BA_RegisterWindowSize,
7077 };
7078
7079 static struct DAC960_privdata DAC960_LP_privdata = {
7080         .HardwareType =         DAC960_LP_Controller,
7081         .FirmwareType   =       DAC960_LP_Controller,
7082         .InterruptHandler =     DAC960_LP_InterruptHandler,
7083         .MemoryWindowSize =     DAC960_LP_RegisterWindowSize,
7084 };
7085
7086 static struct DAC960_privdata DAC960_LA_privdata = {
7087         .HardwareType =         DAC960_LA_Controller,
7088         .FirmwareType   =       DAC960_V1_Controller,
7089         .InterruptHandler =     DAC960_LA_InterruptHandler,
7090         .MemoryWindowSize =     DAC960_LA_RegisterWindowSize,
7091 };
7092
7093 static struct DAC960_privdata DAC960_PG_privdata = {
7094         .HardwareType =         DAC960_PG_Controller,
7095         .FirmwareType   =       DAC960_V1_Controller,
7096         .InterruptHandler =     DAC960_PG_InterruptHandler,
7097         .MemoryWindowSize =     DAC960_PG_RegisterWindowSize,
7098 };
7099
7100 static struct DAC960_privdata DAC960_PD_privdata = {
7101         .HardwareType =         DAC960_PD_Controller,
7102         .FirmwareType   =       DAC960_V1_Controller,
7103         .InterruptHandler =     DAC960_PD_InterruptHandler,
7104         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7105 };
7106
7107 static struct DAC960_privdata DAC960_P_privdata = {
7108         .HardwareType =         DAC960_P_Controller,
7109         .FirmwareType   =       DAC960_V1_Controller,
7110         .InterruptHandler =     DAC960_P_InterruptHandler,
7111         .MemoryWindowSize =     DAC960_PD_RegisterWindowSize,
7112 };
7113
7114 static struct pci_device_id DAC960_id_table[] = {
7115         {
7116                 .vendor         = PCI_VENDOR_ID_MYLEX,
7117                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_GEM,
7118                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7119                 .subdevice      = PCI_ANY_ID,
7120                 .driver_data    = (unsigned long) &DAC960_GEM_privdata,
7121         },
7122         {
7123                 .vendor         = PCI_VENDOR_ID_MYLEX,
7124                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_BA,
7125                 .subvendor      = PCI_ANY_ID,
7126                 .subdevice      = PCI_ANY_ID,
7127                 .driver_data    = (unsigned long) &DAC960_BA_privdata,
7128         },
7129         {
7130                 .vendor         = PCI_VENDOR_ID_MYLEX,
7131                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_LP,
7132                 .subvendor      = PCI_ANY_ID,
7133                 .subdevice      = PCI_ANY_ID,
7134                 .driver_data    = (unsigned long) &DAC960_LP_privdata,
7135         },
7136         {
7137                 .vendor         = PCI_VENDOR_ID_DEC,
7138                 .device         = PCI_DEVICE_ID_DEC_21285,
7139                 .subvendor      = PCI_VENDOR_ID_MYLEX,
7140                 .subdevice      = PCI_DEVICE_ID_MYLEX_DAC960_LA,
7141                 .driver_data    = (unsigned long) &DAC960_LA_privdata,
7142         },
7143         {
7144                 .vendor         = PCI_VENDOR_ID_MYLEX,
7145                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PG,
7146                 .subvendor      = PCI_ANY_ID,
7147                 .subdevice      = PCI_ANY_ID,
7148                 .driver_data    = (unsigned long) &DAC960_PG_privdata,
7149         },
7150         {
7151                 .vendor         = PCI_VENDOR_ID_MYLEX,
7152                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_PD,
7153                 .subvendor      = PCI_ANY_ID,
7154                 .subdevice      = PCI_ANY_ID,
7155                 .driver_data    = (unsigned long) &DAC960_PD_privdata,
7156         },
7157         {
7158                 .vendor         = PCI_VENDOR_ID_MYLEX,
7159                 .device         = PCI_DEVICE_ID_MYLEX_DAC960_P,
7160                 .subvendor      = PCI_ANY_ID,
7161                 .subdevice      = PCI_ANY_ID,
7162                 .driver_data    = (unsigned long) &DAC960_P_privdata,
7163         },
7164         {0, },
7165 };
7166
7167 MODULE_DEVICE_TABLE(pci, DAC960_id_table);
7168
7169 static struct pci_driver DAC960_pci_driver = {
7170         .name           = "DAC960",
7171         .id_table       = DAC960_id_table,
7172         .probe          = DAC960_Probe,
7173         .remove         = DAC960_Remove,
7174 };
7175
7176 static int DAC960_init_module(void)
7177 {
7178         int ret;
7179
7180         ret =  pci_register_driver(&DAC960_pci_driver);
7181 #ifdef DAC960_GAM_MINOR
7182         if (!ret)
7183                 DAC960_gam_init();
7184 #endif
7185         return ret;
7186 }
7187
7188 static void DAC960_cleanup_module(void)
7189 {
7190         int i;
7191
7192 #ifdef DAC960_GAM_MINOR
7193         DAC960_gam_cleanup();
7194 #endif
7195
7196         for (i = 0; i < DAC960_ControllerCount; i++) {
7197                 DAC960_Controller_T *Controller = DAC960_Controllers[i];
7198                 if (Controller == NULL)
7199                         continue;
7200                 DAC960_FinalizeController(Controller);
7201         }
7202         if (DAC960_ProcDirectoryEntry != NULL) {
7203                 remove_proc_entry("rd/status", NULL);
7204                 remove_proc_entry("rd", NULL);
7205         }
7206         DAC960_ControllerCount = 0;
7207         pci_unregister_driver(&DAC960_pci_driver);
7208 }
7209
7210 module_init(DAC960_init_module);
7211 module_exit(DAC960_cleanup_module);
7212
7213 MODULE_LICENSE("GPL");