drivers/scsi/BusLogic.c

   1
   2 /*
   3
   4   Linux Driver for BusLogic MultiMaster and FlashPoint SCSI Host Adapters
   5
   6   Copyright 1995-1998 by Leonard N. Zubkoff <lnz@dandelion.com>
   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   The author respectfully requests that any modifications to this software be
  18   sent directly to him for evaluation and testing.
  19
  20   Special thanks to Wayne Yen, Jin-Lon Hon, and Alex Win of BusLogic, whose
  21   advice has been invaluable, to David Gentzel, for writing the original Linux
  22   BusLogic driver, and to Paul Gortmaker, for being such a dedicated test site.
  23
  24   Finally, special thanks to Mylex/BusLogic for making the FlashPoint SCCB
  25   Manager available as freely redistributable source code.
  26
  27 */
  28
  29 #define BusLogic_DriverVersion          "2.1.16"
  30 #define BusLogic_DriverDate             "18 July 2002"
  31
  32 #include <linux/module.h>
  33 #include <linux/init.h>
  34 #include <linux/interrupt.h>
  35 #include <linux/types.h>
  36 #include <linux/blkdev.h>
  37 #include <linux/delay.h>
  38 #include <linux/ioport.h>
  39 #include <linux/mm.h>
  40 #include <linux/stat.h>
  41 #include <linux/pci.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/jiffies.h>
  44 #include <linux/dma-mapping.h>
  45 #include <scsi/scsicam.h>
  46
  47 #include <asm/dma.h>
  48 #include <asm/io.h>
  49 #include <asm/system.h>
  50
  51 #include <scsi/scsi.h>
  52 #include <scsi/scsi_cmnd.h>
  53 #include <scsi/scsi_device.h>
  54 #include <scsi/scsi_host.h>
  55 #include <scsi/scsi_tcq.h>
  56 #include "BusLogic.h"
  57 #include "FlashPoint.c"
  58
  59 #ifndef FAILURE
  60 #define FAILURE (-1)
  61 #endif
  62
  63 static struct scsi_host_template Bus_Logic_template;
  64
  65 /*
  66   BusLogic_DriverOptionsCount is a count of the number of BusLogic Driver
  67   Options specifications provided via the Linux Kernel Command Line or via
  68   the Loadable Kernel Module Installation Facility.
  69 */
  70
  71 static int BusLogic_DriverOptionsCount;
  72
  73
  74 /*
  75   BusLogic_DriverOptions is an array of Driver Options structures representing
  76   BusLogic Driver Options specifications provided via the Linux Kernel Command
  77   Line or via the Loadable Kernel Module Installation Facility.
  78 */
  79
  80 static struct BusLogic_DriverOptions BusLogic_DriverOptions[BusLogic_MaxHostAdapters];
  81
  82
  83 /*
  84   BusLogic can be assigned a string by insmod.
  85 */
  86
  87 MODULE_LICENSE("GPL");
  88 #ifdef MODULE
  89 static char *BusLogic;
  90 module_param(BusLogic, charp, 0);
  91 #endif
  92
  93
  94 /*
  95   BusLogic_ProbeOptions is a set of Probe Options to be applied across
  96   all BusLogic Host Adapters.
  97 */
  98
  99 static struct BusLogic_ProbeOptions BusLogic_ProbeOptions;
 100
 101
 102 /*
 103   BusLogic_GlobalOptions is a set of Global Options to be applied across
 104   all BusLogic Host Adapters.
 105 */
 106
 107 static struct BusLogic_GlobalOptions BusLogic_GlobalOptions;
 108
 109 static LIST_HEAD(BusLogic_host_list);
 110
 111 /*
 112   BusLogic_ProbeInfoCount is the number of entries in BusLogic_ProbeInfoList.
 113 */
 114
 115 static int BusLogic_ProbeInfoCount;
 116
 117
 118 /*
 119   BusLogic_ProbeInfoList is the list of I/O Addresses and Bus Probe Information
 120   to be checked for potential BusLogic Host Adapters.  It is initialized by
 121   interrogating the PCI Configuration Space on PCI machines as well as from the
 122   list of standard BusLogic I/O Addresses.
 123 */
 124
 125 static struct BusLogic_ProbeInfo *BusLogic_ProbeInfoList;
 126
 127
 128 /*
 129   BusLogic_CommandFailureReason holds a string identifying the reason why a
 130   call to BusLogic_Command failed.  It is only non-NULL when BusLogic_Command
 131   returns a failure code.
 132 */
 133
 134 static char *BusLogic_CommandFailureReason;
 135
 136 /*
 137   BusLogic_AnnounceDriver announces the Driver Version and Date, Author's
 138   Name, Copyright Notice, and Electronic Mail Address.
 139 */
 140
 141 static void BusLogic_AnnounceDriver(struct BusLogic_HostAdapter *HostAdapter)
 142 {
 143         BusLogic_Announce("***** BusLogic SCSI Driver Version " BusLogic_DriverVersion " of " BusLogic_DriverDate " *****\n", HostAdapter);
 144         BusLogic_Announce("Copyright 1995-1998 by Leonard N. Zubkoff " "<lnz@dandelion.com>\n", HostAdapter);
 145 }
 146
 147
 148 /*
 149   BusLogic_DriverInfo returns the Host Adapter Name to identify this SCSI
 150   Driver and Host Adapter.
 151 */
 152
 153 static const char *BusLogic_DriverInfo(struct Scsi_Host *Host)
 154 {
 155         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
 156         return HostAdapter->FullModelName;
 157 }
 158
 159 /*
 160   BusLogic_InitializeCCBs initializes a group of Command Control Blocks (CCBs)
 161   for Host Adapter from the BlockSize bytes located at BlockPointer.  The newly
 162   created CCBs are added to Host Adapter's free list.
 163 */
 164
 165 static void BusLogic_InitializeCCBs(struct BusLogic_HostAdapter *HostAdapter, void *BlockPointer, int BlockSize, dma_addr_t BlockPointerHandle)
 166 {
 167         struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) BlockPointer;
 168         unsigned int offset = 0;
 169         memset(BlockPointer, 0, BlockSize);
 170         CCB->AllocationGroupHead = BlockPointerHandle;
 171         CCB->AllocationGroupSize = BlockSize;
 172         while ((BlockSize -= sizeof(struct BusLogic_CCB)) >= 0) {
 173                 CCB->Status = BusLogic_CCB_Free;
 174                 CCB->HostAdapter = HostAdapter;
 175                 CCB->DMA_Handle = (u32) BlockPointerHandle + offset;
 176                 if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
 177                         CCB->CallbackFunction = BusLogic_QueueCompletedCCB;
 178                         CCB->BaseAddress = HostAdapter->FlashPointInfo.BaseAddress;
 179                 }
 180                 CCB->Next = HostAdapter->Free_CCBs;
 181                 CCB->NextAll = HostAdapter->All_CCBs;
 182                 HostAdapter->Free_CCBs = CCB;
 183                 HostAdapter->All_CCBs = CCB;
 184                 HostAdapter->AllocatedCCBs++;
 185                 CCB++;
 186                 offset += sizeof(struct BusLogic_CCB);
 187         }
 188 }
 189
 190
 191 /*
 192   BusLogic_CreateInitialCCBs allocates the initial CCBs for Host Adapter.
 193 */
 194
 195 static boolean __init BusLogic_CreateInitialCCBs(struct BusLogic_HostAdapter *HostAdapter)
 196 {
 197         int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
 198         void *BlockPointer;
 199         dma_addr_t BlockPointerHandle;
 200         while (HostAdapter->AllocatedCCBs < HostAdapter->InitialCCBs) {
 201                 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
 202                 if (BlockPointer == NULL) {
 203                         BusLogic_Error("UNABLE TO ALLOCATE CCB GROUP - DETACHING\n", HostAdapter);
 204                         return false;
 205                 }
 206                 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
 207         }
 208         return true;
 209 }
 210
 211
 212 /*
 213   BusLogic_DestroyCCBs deallocates the CCBs for Host Adapter.
 214 */
 215
 216 static void BusLogic_DestroyCCBs(struct BusLogic_HostAdapter *HostAdapter)
 217 {
 218         struct BusLogic_CCB *NextCCB = HostAdapter->All_CCBs, *CCB, *Last_CCB = NULL;
 219         HostAdapter->All_CCBs = NULL;
 220         HostAdapter->Free_CCBs = NULL;
 221         while ((CCB = NextCCB) != NULL) {
 222                 NextCCB = CCB->NextAll;
 223                 if (CCB->AllocationGroupHead) {
 224                         if (Last_CCB)
 225                                 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
 226                         Last_CCB = CCB;
 227                 }
 228         }
 229         if (Last_CCB)
 230                 pci_free_consistent(HostAdapter->PCI_Device, Last_CCB->AllocationGroupSize, Last_CCB, Last_CCB->AllocationGroupHead);
 231 }
 232
 233
 234 /*
 235   BusLogic_CreateAdditionalCCBs allocates Additional CCBs for Host Adapter.  If
 236   allocation fails and there are no remaining CCBs available, the Driver Queue
 237   Depth is decreased to a known safe value to avoid potential deadlocks when
 238   multiple host adapters share the same IRQ Channel.
 239 */
 240
 241 static void BusLogic_CreateAdditionalCCBs(struct BusLogic_HostAdapter *HostAdapter, int AdditionalCCBs, boolean SuccessMessageP)
 242 {
 243         int BlockSize = BusLogic_CCB_AllocationGroupSize * sizeof(struct BusLogic_CCB);
 244         int PreviouslyAllocated = HostAdapter->AllocatedCCBs;
 245         void *BlockPointer;
 246         dma_addr_t BlockPointerHandle;
 247         if (AdditionalCCBs <= 0)
 248                 return;
 249         while (HostAdapter->AllocatedCCBs - PreviouslyAllocated < AdditionalCCBs) {
 250                 BlockPointer = pci_alloc_consistent(HostAdapter->PCI_Device, BlockSize, &BlockPointerHandle);
 251                 if (BlockPointer == NULL)
 252                         break;
 253                 BusLogic_InitializeCCBs(HostAdapter, BlockPointer, BlockSize, BlockPointerHandle);
 254         }
 255         if (HostAdapter->AllocatedCCBs > PreviouslyAllocated) {
 256                 if (SuccessMessageP)
 257                         BusLogic_Notice("Allocated %d additional CCBs (total now %d)\n", HostAdapter, HostAdapter->AllocatedCCBs - PreviouslyAllocated, HostAdapter->AllocatedCCBs);
 258                 return;
 259         }
 260         BusLogic_Notice("Failed to allocate additional CCBs\n", HostAdapter);
 261         if (HostAdapter->DriverQueueDepth > HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount) {
 262                 HostAdapter->DriverQueueDepth = HostAdapter->AllocatedCCBs - HostAdapter->TargetDeviceCount;
 263                 HostAdapter->SCSI_Host->can_queue = HostAdapter->DriverQueueDepth;
 264         }
 265 }
 266
 267 /*
 268   BusLogic_AllocateCCB allocates a CCB from Host Adapter's free list,
 269   allocating more memory from the Kernel if necessary.  The Host Adapter's
 270   Lock should already have been acquired by the caller.
 271 */
 272
 273 static struct BusLogic_CCB *BusLogic_AllocateCCB(struct BusLogic_HostAdapter
 274                                                  *HostAdapter)
 275 {
 276         static unsigned long SerialNumber = 0;
 277         struct BusLogic_CCB *CCB;
 278         CCB = HostAdapter->Free_CCBs;
 279         if (CCB != NULL) {
 280                 CCB->SerialNumber = ++SerialNumber;
 281                 HostAdapter->Free_CCBs = CCB->Next;
 282                 CCB->Next = NULL;
 283                 if (HostAdapter->Free_CCBs == NULL)
 284                         BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
 285                 return CCB;
 286         }
 287         BusLogic_CreateAdditionalCCBs(HostAdapter, HostAdapter->IncrementalCCBs, true);
 288         CCB = HostAdapter->Free_CCBs;
 289         if (CCB == NULL)
 290                 return NULL;
 291         CCB->SerialNumber = ++SerialNumber;
 292         HostAdapter->Free_CCBs = CCB->Next;
 293         CCB->Next = NULL;
 294         return CCB;
 295 }
 296
 297
 298 /*
 299   BusLogic_DeallocateCCB deallocates a CCB, returning it to the Host Adapter's
 300   free list.  The Host Adapter's Lock should already have been acquired by the
 301   caller.
 302 */
 303
 304 static void BusLogic_DeallocateCCB(struct BusLogic_CCB *CCB)
 305 {
 306         struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
 307         struct scsi_cmnd *cmd = CCB->Command;
 308
 309         if (cmd->use_sg != 0) {
 310                 pci_unmap_sg(HostAdapter->PCI_Device,
 311                                 (struct scatterlist *)cmd->request_buffer,
 312                                 cmd->use_sg, cmd->sc_data_direction);
 313         } else if (cmd->request_bufflen != 0) {
 314                 pci_unmap_single(HostAdapter->PCI_Device, CCB->DataPointer,
 315                                 CCB->DataLength, cmd->sc_data_direction);
 316         }
 317         pci_unmap_single(HostAdapter->PCI_Device, CCB->SenseDataPointer,
 318                         CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
 319
 320         CCB->Command = NULL;
 321         CCB->Status = BusLogic_CCB_Free;
 322         CCB->Next = HostAdapter->Free_CCBs;
 323         HostAdapter->Free_CCBs = CCB;
 324 }
 325
 326
 327 /*
 328   BusLogic_Command sends the command OperationCode to HostAdapter, optionally
 329   providing ParameterLength bytes of ParameterData and receiving at most
 330   ReplyLength bytes of ReplyData; any excess reply data is received but
 331   discarded.
 332
 333   On success, this function returns the number of reply bytes read from
 334   the Host Adapter (including any discarded data); on failure, it returns
 335   -1 if the command was invalid, or -2 if a timeout occurred.
 336
 337   BusLogic_Command is called exclusively during host adapter detection and
 338   initialization, so performance and latency are not critical, and exclusive
 339   access to the Host Adapter hardware is assumed.  Once the host adapter and
 340   driver are initialized, the only Host Adapter command that is issued is the
 341   single byte Execute Mailbox Command operation code, which does not require
 342   waiting for the Host Adapter Ready bit to be set in the Status Register.
 343 */
 344
 345 static int BusLogic_Command(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_OperationCode OperationCode, void *ParameterData, int ParameterLength, void *ReplyData, int ReplyLength)
 346 {
 347         unsigned char *ParameterPointer = (unsigned char *) ParameterData;
 348         unsigned char *ReplyPointer = (unsigned char *) ReplyData;
 349         union BusLogic_StatusRegister StatusRegister;
 350         union BusLogic_InterruptRegister InterruptRegister;
 351         unsigned long ProcessorFlags = 0;
 352         int ReplyBytes = 0, Result;
 353         long TimeoutCounter;
 354         /*
 355            Clear out the Reply Data if provided.
 356          */
 357         if (ReplyLength > 0)
 358                 memset(ReplyData, 0, ReplyLength);
 359         /*
 360            If the IRQ Channel has not yet been acquired, then interrupts must be
 361            disabled while issuing host adapter commands since a Command Complete
 362            interrupt could occur if the IRQ Channel was previously enabled by another
 363            BusLogic Host Adapter or another driver sharing the same IRQ Channel.
 364          */
 365         if (!HostAdapter->IRQ_ChannelAcquired) {
 366                 local_irq_save(ProcessorFlags);
 367                 local_irq_disable();
 368         }
 369         /*
 370            Wait for the Host Adapter Ready bit to be set and the Command/Parameter
 371            Register Busy bit to be reset in the Status Register.
 372          */
 373         TimeoutCounter = 10000;
 374         while (--TimeoutCounter >= 0) {
 375                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 376                 if (StatusRegister.sr.HostAdapterReady && !StatusRegister.sr.CommandParameterRegisterBusy)
 377                         break;
 378                 udelay(100);
 379         }
 380         if (TimeoutCounter < 0) {
 381                 BusLogic_CommandFailureReason = "Timeout waiting for Host Adapter Ready";
 382                 Result = -2;
 383                 goto Done;
 384         }
 385         /*
 386            Write the OperationCode to the Command/Parameter Register.
 387          */
 388         HostAdapter->HostAdapterCommandCompleted = false;
 389         BusLogic_WriteCommandParameterRegister(HostAdapter, OperationCode);
 390         /*
 391            Write any additional Parameter Bytes.
 392          */
 393         TimeoutCounter = 10000;
 394         while (ParameterLength > 0 && --TimeoutCounter >= 0) {
 395                 /*
 396                    Wait 100 microseconds to give the Host Adapter enough time to determine
 397                    whether the last value written to the Command/Parameter Register was
 398                    valid or not.  If the Command Complete bit is set in the Interrupt
 399                    Register, then the Command Invalid bit in the Status Register will be
 400                    reset if the Operation Code or Parameter was valid and the command
 401                    has completed, or set if the Operation Code or Parameter was invalid.
 402                    If the Data In Register Ready bit is set in the Status Register, then
 403                    the Operation Code was valid, and data is waiting to be read back
 404                    from the Host Adapter.  Otherwise, wait for the Command/Parameter
 405                    Register Busy bit in the Status Register to be reset.
 406                  */
 407                 udelay(100);
 408                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 409                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 410                 if (InterruptRegister.ir.CommandComplete)
 411                         break;
 412                 if (HostAdapter->HostAdapterCommandCompleted)
 413                         break;
 414                 if (StatusRegister.sr.DataInRegisterReady)
 415                         break;
 416                 if (StatusRegister.sr.CommandParameterRegisterBusy)
 417                         continue;
 418                 BusLogic_WriteCommandParameterRegister(HostAdapter, *ParameterPointer++);
 419                 ParameterLength--;
 420         }
 421         if (TimeoutCounter < 0) {
 422                 BusLogic_CommandFailureReason = "Timeout waiting for Parameter Acceptance";
 423                 Result = -2;
 424                 goto Done;
 425         }
 426         /*
 427            The Modify I/O Address command does not cause a Command Complete Interrupt.
 428          */
 429         if (OperationCode == BusLogic_ModifyIOAddress) {
 430                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 431                 if (StatusRegister.sr.CommandInvalid) {
 432                         BusLogic_CommandFailureReason = "Modify I/O Address Invalid";
 433                         Result = -1;
 434                         goto Done;
 435                 }
 436                 if (BusLogic_GlobalOptions.TraceConfiguration)
 437                         BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: " "(Modify I/O Address)\n", HostAdapter, OperationCode, StatusRegister.All);
 438                 Result = 0;
 439                 goto Done;
 440         }
 441         /*
 442            Select an appropriate timeout value for awaiting command completion.
 443          */
 444         switch (OperationCode) {
 445         case BusLogic_InquireInstalledDevicesID0to7:
 446         case BusLogic_InquireInstalledDevicesID8to15:
 447         case BusLogic_InquireTargetDevices:
 448                 /* Approximately 60 seconds. */
 449                 TimeoutCounter = 60 * 10000;
 450                 break;
 451         default:
 452                 /* Approximately 1 second. */
 453                 TimeoutCounter = 10000;
 454                 break;
 455         }
 456         /*
 457            Receive any Reply Bytes, waiting for either the Command Complete bit to
 458            be set in the Interrupt Register, or for the Interrupt Handler to set the
 459            Host Adapter Command Completed bit in the Host Adapter structure.
 460          */
 461         while (--TimeoutCounter >= 0) {
 462                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 463                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 464                 if (InterruptRegister.ir.CommandComplete)
 465                         break;
 466                 if (HostAdapter->HostAdapterCommandCompleted)
 467                         break;
 468                 if (StatusRegister.sr.DataInRegisterReady) {
 469                         if (++ReplyBytes <= ReplyLength)
 470                                 *ReplyPointer++ = BusLogic_ReadDataInRegister(HostAdapter);
 471                         else
 472                                 BusLogic_ReadDataInRegister(HostAdapter);
 473                 }
 474                 if (OperationCode == BusLogic_FetchHostAdapterLocalRAM && StatusRegister.sr.HostAdapterReady)
 475                         break;
 476                 udelay(100);
 477         }
 478         if (TimeoutCounter < 0) {
 479                 BusLogic_CommandFailureReason = "Timeout waiting for Command Complete";
 480                 Result = -2;
 481                 goto Done;
 482         }
 483         /*
 484            Clear any pending Command Complete Interrupt.
 485          */
 486         BusLogic_InterruptReset(HostAdapter);
 487         /*
 488            Provide tracing information if requested.
 489          */
 490         if (BusLogic_GlobalOptions.TraceConfiguration) {
 491                 int i;
 492                 BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: %2d ==> %2d:", HostAdapter, OperationCode, StatusRegister.All, ReplyLength, ReplyBytes);
 493                 if (ReplyLength > ReplyBytes)
 494                         ReplyLength = ReplyBytes;
 495                 for (i = 0; i < ReplyLength; i++)
 496                         BusLogic_Notice(" %02X", HostAdapter, ((unsigned char *) ReplyData)[i]);
 497                 BusLogic_Notice("\n", HostAdapter);
 498         }
 499         /*
 500            Process Command Invalid conditions.
 501          */
 502         if (StatusRegister.sr.CommandInvalid) {
 503                 /*
 504                    Some early BusLogic Host Adapters may not recover properly from
 505                    a Command Invalid condition, so if this appears to be the case,
 506                    a Soft Reset is issued to the Host Adapter.  Potentially invalid
 507                    commands are never attempted after Mailbox Initialization is
 508                    performed, so there should be no Host Adapter state lost by a
 509                    Soft Reset in response to a Command Invalid condition.
 510                  */
 511                 udelay(1000);
 512                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 513                 if (StatusRegister.sr.CommandInvalid ||
 514                     StatusRegister.sr.Reserved ||
 515                     StatusRegister.sr.DataInRegisterReady ||
 516                     StatusRegister.sr.CommandParameterRegisterBusy || !StatusRegister.sr.HostAdapterReady || !StatusRegister.sr.InitializationRequired || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.DiagnosticFailure) {
 517                         BusLogic_SoftReset(HostAdapter);
 518                         udelay(1000);
 519                 }
 520                 BusLogic_CommandFailureReason = "Command Invalid";
 521                 Result = -1;
 522                 goto Done;
 523         }
 524         /*
 525            Handle Excess Parameters Supplied conditions.
 526          */
 527         if (ParameterLength > 0) {
 528                 BusLogic_CommandFailureReason = "Excess Parameters Supplied";
 529                 Result = -1;
 530                 goto Done;
 531         }
 532         /*
 533            Indicate the command completed successfully.
 534          */
 535         BusLogic_CommandFailureReason = NULL;
 536         Result = ReplyBytes;
 537         /*
 538            Restore the interrupt status if necessary and return.
 539          */
 540       Done:
 541         if (!HostAdapter->IRQ_ChannelAcquired)
 542                 local_irq_restore(ProcessorFlags);
 543         return Result;
 544 }
 545
 546
 547 /*
 548   BusLogic_AppendProbeAddressISA appends a single ISA I/O Address to the list
 549   of I/O Address and Bus Probe Information to be checked for potential BusLogic
 550   Host Adapters.
 551 */
 552
 553 static void __init BusLogic_AppendProbeAddressISA(unsigned long IO_Address)
 554 {
 555         struct BusLogic_ProbeInfo *ProbeInfo;
 556         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 557                 return;
 558         ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 559         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 560         ProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 561         ProbeInfo->IO_Address = IO_Address;
 562         ProbeInfo->PCI_Device = NULL;
 563 }
 564
 565
 566 /*
 567   BusLogic_InitializeProbeInfoListISA initializes the list of I/O Address and
 568   Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
 569   only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
 570 */
 571
 572 static void __init BusLogic_InitializeProbeInfoListISA(struct BusLogic_HostAdapter
 573                                                        *PrototypeHostAdapter)
 574 {
 575         /*
 576            If BusLogic Driver Options specifications requested that ISA Bus Probes
 577            be inhibited, do not proceed further.
 578          */
 579         if (BusLogic_ProbeOptions.NoProbeISA)
 580                 return;
 581         /*
 582            Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
 583          */
 584         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe330 : check_region(0x330, BusLogic_MultiMasterAddressCount) == 0)
 585                 BusLogic_AppendProbeAddressISA(0x330);
 586         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe334 : check_region(0x334, BusLogic_MultiMasterAddressCount) == 0)
 587                 BusLogic_AppendProbeAddressISA(0x334);
 588         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe230 : check_region(0x230, BusLogic_MultiMasterAddressCount) == 0)
 589                 BusLogic_AppendProbeAddressISA(0x230);
 590         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe234 : check_region(0x234, BusLogic_MultiMasterAddressCount) == 0)
 591                 BusLogic_AppendProbeAddressISA(0x234);
 592         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe130 : check_region(0x130, BusLogic_MultiMasterAddressCount) == 0)
 593                 BusLogic_AppendProbeAddressISA(0x130);
 594         if (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe134 : check_region(0x134, BusLogic_MultiMasterAddressCount) == 0)
 595                 BusLogic_AppendProbeAddressISA(0x134);
 596 }
 597
 598
 599 #ifdef CONFIG_PCI
 600
 601
 602 /*
 603   BusLogic_SortProbeInfo sorts a section of BusLogic_ProbeInfoList in order
 604   of increasing PCI Bus and Device Number.
 605 */
 606
 607 static void __init BusLogic_SortProbeInfo(struct BusLogic_ProbeInfo *ProbeInfoList, int ProbeInfoCount)
 608 {
 609         int LastInterchange = ProbeInfoCount - 1, Bound, j;
 610         while (LastInterchange > 0) {
 611                 Bound = LastInterchange;
 612                 LastInterchange = 0;
 613                 for (j = 0; j < Bound; j++) {
 614                         struct BusLogic_ProbeInfo *ProbeInfo1 = &ProbeInfoList[j];
 615                         struct BusLogic_ProbeInfo *ProbeInfo2 = &ProbeInfoList[j + 1];
 616                         if (ProbeInfo1->Bus > ProbeInfo2->Bus || (ProbeInfo1->Bus == ProbeInfo2->Bus && (ProbeInfo1->Device > ProbeInfo2->Device))) {
 617                                 struct BusLogic_ProbeInfo TempProbeInfo;
 618                                 memcpy(&TempProbeInfo, ProbeInfo1, sizeof(struct BusLogic_ProbeInfo));
 619                                 memcpy(ProbeInfo1, ProbeInfo2, sizeof(struct BusLogic_ProbeInfo));
 620                                 memcpy(ProbeInfo2, &TempProbeInfo, sizeof(struct BusLogic_ProbeInfo));
 621                                 LastInterchange = j;
 622                         }
 623                 }
 624         }
 625 }
 626
 627
 628 /*
 629   BusLogic_InitializeMultiMasterProbeInfo initializes the list of I/O Address
 630   and Bus Probe Information to be checked for potential BusLogic MultiMaster
 631   SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
 632   machines as well as from the list of standard BusLogic MultiMaster ISA
 633   I/O Addresses.  It returns the number of PCI MultiMaster Host Adapters found.
 634 */
 635
 636 static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAdapter
 637                                                           *PrototypeHostAdapter)
 638 {
 639         struct BusLogic_ProbeInfo *PrimaryProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount];
 640         int NonPrimaryPCIMultiMasterIndex = BusLogic_ProbeInfoCount + 1;
 641         int NonPrimaryPCIMultiMasterCount = 0, PCIMultiMasterCount = 0;
 642         boolean ForceBusDeviceScanningOrder = false;
 643         boolean ForceBusDeviceScanningOrderChecked = false;
 644         boolean StandardAddressSeen[6];
 645         struct pci_dev *PCI_Device = NULL;
 646         int i;
 647         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 648                 return 0;
 649         BusLogic_ProbeInfoCount++;
 650         for (i = 0; i < 6; i++)
 651                 StandardAddressSeen[i] = false;
 652         /*
 653            Iterate over the MultiMaster PCI Host Adapters.  For each enumerated host
 654            adapter, determine whether its ISA Compatible I/O Port is enabled and if
 655            so, whether it is assigned the Primary I/O Address.  A host adapter that is
 656            assigned the Primary I/O Address will always be the preferred boot device.
 657            The MultiMaster BIOS will first recognize a host adapter at the Primary I/O
 658            Address, then any other PCI host adapters, and finally any host adapters
 659            located at the remaining standard ISA I/O Addresses.  When a PCI host
 660            adapter is found with its ISA Compatible I/O Port enabled, a command is
 661            issued to disable the ISA Compatible I/O Port, and it is noted that the
 662            particular standard ISA I/O Address need not be probed.
 663          */
 664         PrimaryProbeInfo->IO_Address = 0;
 665         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER, PCI_Device)) != NULL) {
 666                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 667                 struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
 668                 enum BusLogic_ISACompatibleIOPort ModifyIOAddressRequest;
 669                 unsigned char Bus;
 670                 unsigned char Device;
 671                 unsigned int IRQ_Channel;
 672                 unsigned long BaseAddress0;
 673                 unsigned long BaseAddress1;
 674                 unsigned long IO_Address;
 675                 unsigned long PCI_Address;
 676
 677                 if (pci_enable_device(PCI_Device))
 678                         continue;
 679
 680                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK ))
 681                         continue;
 682
 683                 Bus = PCI_Device->bus->number;
 684                 Device = PCI_Device->devfn >> 3;
 685                 IRQ_Channel = PCI_Device->irq;
 686                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 687                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 688
 689                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 690                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, BaseAddress0);
 691                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 692                         continue;
 693                 }
 694                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 695                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, BaseAddress1);
 696                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 697                         continue;
 698                 }
 699                 if (IRQ_Channel == 0) {
 700                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, IRQ_Channel);
 701                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 702                         continue;
 703                 }
 704                 if (BusLogic_GlobalOptions.TraceProbe) {
 705                         BusLogic_Notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
 706                         BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
 707                 }
 708                 /*
 709                    Issue the Inquire PCI Host Adapter Information command to determine
 710                    the ISA Compatible I/O Port.  If the ISA Compatible I/O Port is
 711                    known and enabled, note that the particular Standard ISA I/O
 712                    Address should not be probed.
 713                  */
 714                 HostAdapter->IO_Address = IO_Address;
 715                 BusLogic_InterruptReset(HostAdapter);
 716                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
 717                     == sizeof(PCIHostAdapterInformation)) {
 718                         if (PCIHostAdapterInformation.ISACompatibleIOPort < 6)
 719                                 StandardAddressSeen[PCIHostAdapterInformation.ISACompatibleIOPort] = true;
 720                 } else
 721                         PCIHostAdapterInformation.ISACompatibleIOPort = BusLogic_IO_Disable;
 722                 /*
 723                  * Issue the Modify I/O Address command to disable the ISA Compatible
 724                  * I/O Port.  On PCI Host Adapters, the Modify I/O Address command
 725                  * allows modification of the ISA compatible I/O Address that the Host
 726                  * Adapter responds to; it does not affect the PCI compliant I/O Address
 727                  * assigned at system initialization.
 728                  */
 729                 ModifyIOAddressRequest = BusLogic_IO_Disable;
 730                 BusLogic_Command(HostAdapter, BusLogic_ModifyIOAddress, &ModifyIOAddressRequest, sizeof(ModifyIOAddressRequest), NULL, 0);
 731                 /*
 732                    For the first MultiMaster Host Adapter enumerated, issue the Fetch
 733                    Host Adapter Local RAM command to read byte 45 of the AutoSCSI area,
 734                    for the setting of the "Use Bus And Device # For PCI Scanning Seq."
 735                    option.  Issue the Inquire Board ID command since this option is
 736                    only valid for the BT-948/958/958D.
 737                  */
 738                 if (!ForceBusDeviceScanningOrderChecked) {
 739                         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 740                         struct BusLogic_AutoSCSIByte45 AutoSCSIByte45;
 741                         struct BusLogic_BoardID BoardID;
 742                         FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset + 45;
 743                         FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIByte45);
 744                         BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIByte45, sizeof(AutoSCSIByte45));
 745                         BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID));
 746                         if (BoardID.FirmwareVersion1stDigit == '5')
 747                                 ForceBusDeviceScanningOrder = AutoSCSIByte45.ForceBusDeviceScanningOrder;
 748                         ForceBusDeviceScanningOrderChecked = true;
 749                 }
 750                 /*
 751                    Determine whether this MultiMaster Host Adapter has its ISA
 752                    Compatible I/O Port enabled and is assigned the Primary I/O Address.
 753                    If it does, then it is the Primary MultiMaster Host Adapter and must
 754                    be recognized first.  If it does not, then it is added to the list
 755                    for probing after any Primary MultiMaster Host Adapter is probed.
 756                  */
 757                 if (PCIHostAdapterInformation.ISACompatibleIOPort == BusLogic_IO_330) {
 758                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 759                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 760                         PrimaryProbeInfo->IO_Address = IO_Address;
 761                         PrimaryProbeInfo->PCI_Address = PCI_Address;
 762                         PrimaryProbeInfo->Bus = Bus;
 763                         PrimaryProbeInfo->Device = Device;
 764                         PrimaryProbeInfo->IRQ_Channel = IRQ_Channel;
 765                         PrimaryProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 766                         PCIMultiMasterCount++;
 767                 } else if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 768                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 769                         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 770                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 771                         ProbeInfo->IO_Address = IO_Address;
 772                         ProbeInfo->PCI_Address = PCI_Address;
 773                         ProbeInfo->Bus = Bus;
 774                         ProbeInfo->Device = Device;
 775                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 776                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 777                         NonPrimaryPCIMultiMasterCount++;
 778                         PCIMultiMasterCount++;
 779                 } else
 780                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 781         }
 782         /*
 783            If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON
 784            for the first enumerated MultiMaster Host Adapter, and if that host adapter
 785            is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster
 786            Host Adapters in the order of increasing PCI Bus and Device Number.  In
 787            that case, sort the probe information into the same order the BIOS uses.
 788            If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster
 789            Host Adapters in the order they are enumerated by the PCI BIOS, and hence
 790            no sorting is necessary.
 791          */
 792         if (ForceBusDeviceScanningOrder)
 793                 BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[NonPrimaryPCIMultiMasterIndex], NonPrimaryPCIMultiMasterCount);
 794         /*
 795            If no PCI MultiMaster Host Adapter is assigned the Primary I/O Address,
 796            then the Primary I/O Address must be probed explicitly before any PCI
 797            host adapters are probed.
 798          */
 799         if (!BusLogic_ProbeOptions.NoProbeISA)
 800                 if (PrimaryProbeInfo->IO_Address == 0 && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe330 : check_region(0x330, BusLogic_MultiMasterAddressCount) == 0)) {
 801                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 802                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 803                         PrimaryProbeInfo->IO_Address = 0x330;
 804                 }
 805         /*
 806            Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
 807            omitting the Primary I/O Address which has already been handled.
 808          */
 809         if (!BusLogic_ProbeOptions.NoProbeISA) {
 810                 if (!StandardAddressSeen[1] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe334 : check_region(0x334, BusLogic_MultiMasterAddressCount) == 0))
 811                         BusLogic_AppendProbeAddressISA(0x334);
 812                 if (!StandardAddressSeen[2] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe230 : check_region(0x230, BusLogic_MultiMasterAddressCount) == 0))
 813                         BusLogic_AppendProbeAddressISA(0x230);
 814                 if (!StandardAddressSeen[3] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe234 : check_region(0x234, BusLogic_MultiMasterAddressCount) == 0))
 815                         BusLogic_AppendProbeAddressISA(0x234);
 816                 if (!StandardAddressSeen[4] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe130 : check_region(0x130, BusLogic_MultiMasterAddressCount) == 0))
 817                         BusLogic_AppendProbeAddressISA(0x130);
 818                 if (!StandardAddressSeen[5] && (BusLogic_ProbeOptions.LimitedProbeISA ? BusLogic_ProbeOptions.Probe134 : check_region(0x134, BusLogic_MultiMasterAddressCount) == 0))
 819                         BusLogic_AppendProbeAddressISA(0x134);
 820         }
 821         /*
 822            Iterate over the older non-compliant MultiMaster PCI Host Adapters,
 823            noting the PCI bus location and assigned IRQ Channel.
 824          */
 825         PCI_Device = NULL;
 826         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC, PCI_Device)) != NULL) {
 827                 unsigned char Bus;
 828                 unsigned char Device;
 829                 unsigned int IRQ_Channel;
 830                 unsigned long IO_Address;
 831
 832                 if (pci_enable_device(PCI_Device))
 833                         continue;
 834
 835                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
 836                         continue;
 837
 838                 Bus = PCI_Device->bus->number;
 839                 Device = PCI_Device->devfn >> 3;
 840                 IRQ_Channel = PCI_Device->irq;
 841                 IO_Address = pci_resource_start(PCI_Device, 0);
 842
 843                 if (IO_Address == 0 || IRQ_Channel == 0)
 844                         continue;
 845                 for (i = 0; i < BusLogic_ProbeInfoCount; i++) {
 846                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[i];
 847                         if (ProbeInfo->IO_Address == IO_Address && ProbeInfo->HostAdapterType == BusLogic_MultiMaster) {
 848                                 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 849                                 ProbeInfo->PCI_Address = 0;
 850                                 ProbeInfo->Bus = Bus;
 851                                 ProbeInfo->Device = Device;
 852                                 ProbeInfo->IRQ_Channel = IRQ_Channel;
 853                                 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 854                                 break;
 855                         }
 856                 }
 857         }
 858         return PCIMultiMasterCount;
 859 }
 860
 861
 862 /*
 863   BusLogic_InitializeFlashPointProbeInfo initializes the list of I/O Address
 864   and Bus Probe Information to be checked for potential BusLogic FlashPoint
 865   Host Adapters by interrogating the PCI Configuration Space.  It returns the
 866   number of FlashPoint Host Adapters found.
 867 */
 868
 869 static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAdapter
 870                                                          *PrototypeHostAdapter)
 871 {
 872         int FlashPointIndex = BusLogic_ProbeInfoCount, FlashPointCount = 0;
 873         struct pci_dev *PCI_Device = NULL;
 874         /*
 875            Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
 876          */
 877         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, PCI_Device)) != NULL) {
 878                 unsigned char Bus;
 879                 unsigned char Device;
 880                 unsigned int IRQ_Channel;
 881                 unsigned long BaseAddress0;
 882                 unsigned long BaseAddress1;
 883                 unsigned long IO_Address;
 884                 unsigned long PCI_Address;
 885
 886                 if (pci_enable_device(PCI_Device))
 887                         continue;
 888
 889                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
 890                         continue;
 891
 892                 Bus = PCI_Device->bus->number;
 893                 Device = PCI_Device->devfn >> 3;
 894                 IRQ_Channel = PCI_Device->irq;
 895                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 896                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 897 #ifndef CONFIG_SCSI_OMIT_FLASHPOINT
 898                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 899                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, BaseAddress0);
 900                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 901                         continue;
 902                 }
 903                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 904                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, BaseAddress1);
 905                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 906                         continue;
 907                 }
 908                 if (IRQ_Channel == 0) {
 909                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, IRQ_Channel);
 910                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 911                         continue;
 912                 }
 913                 if (BusLogic_GlobalOptions.TraceProbe) {
 914                         BusLogic_Notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
 915                         BusLogic_Notice("BusLogic: PCI Bus %d Device %d I/O Address " "0x%X PCI Address 0x%X\n", NULL, Bus, Device, IO_Address, PCI_Address);
 916                 }
 917                 if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 918                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 919                         ProbeInfo->HostAdapterType = BusLogic_FlashPoint;
 920                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 921                         ProbeInfo->IO_Address = IO_Address;
 922                         ProbeInfo->PCI_Address = PCI_Address;
 923                         ProbeInfo->Bus = Bus;
 924                         ProbeInfo->Device = Device;
 925                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 926                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 927                         FlashPointCount++;
 928                 } else
 929                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 930 #else
 931                 BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, Bus, Device);
 932                 BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, IO_Address, PCI_Address, IRQ_Channel);
 933                 BusLogic_Error("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
 934 #endif
 935         }
 936         /*
 937            The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
 938            increasing PCI Bus and Device Number, so sort the probe information into
 939            the same order the BIOS uses.
 940          */
 941         BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[FlashPointIndex], FlashPointCount);
 942         return FlashPointCount;
 943 }
 944
 945
 946 /*
 947   BusLogic_InitializeProbeInfoList initializes the list of I/O Address and Bus
 948   Probe Information to be checked for potential BusLogic SCSI Host Adapters by
 949   interrogating the PCI Configuration Space on PCI machines as well as from the
 950   list of standard BusLogic MultiMaster ISA I/O Addresses.  By default, if both
 951   FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
 952   probe for FlashPoint Host Adapters first unless the BIOS primary disk is
 953   controlled by the first PCI MultiMaster Host Adapter, in which case
 954   MultiMaster Host Adapters will be probed first.  The BusLogic Driver Options
 955   specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
 956   a particular probe order.
 957 */
 958
 959 static void __init BusLogic_InitializeProbeInfoList(struct BusLogic_HostAdapter
 960                                                     *PrototypeHostAdapter)
 961 {
 962         /*
 963            If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint
 964            Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
 965          */
 966         if (!BusLogic_ProbeOptions.NoProbePCI) {
 967                 if (BusLogic_ProbeOptions.MultiMasterFirst) {
 968                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 969                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 970                 } else if (BusLogic_ProbeOptions.FlashPointFirst) {
 971                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 972                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 973                 } else {
 974                         int FlashPointCount = BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 975                         int PCIMultiMasterCount = BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 976                         if (FlashPointCount > 0 && PCIMultiMasterCount > 0) {
 977                                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[FlashPointCount];
 978                                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 979                                 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 980                                 struct BusLogic_BIOSDriveMapByte Drive0MapByte;
 981                                 while (ProbeInfo->HostAdapterBusType != BusLogic_PCI_Bus)
 982                                         ProbeInfo++;
 983                                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
 984                                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_BIOS_BaseOffset + BusLogic_BIOS_DriveMapOffset + 0;
 985                                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(Drive0MapByte);
 986                                 BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &Drive0MapByte, sizeof(Drive0MapByte));
 987                                 /*
 988                                    If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0
 989                                    is controlled by this PCI MultiMaster Host Adapter, then
 990                                    reverse the probe order so that MultiMaster Host Adapters are
 991                                    probed before FlashPoint Host Adapters.
 992                                  */
 993                                 if (Drive0MapByte.DiskGeometry != BusLogic_BIOS_Disk_Not_Installed) {
 994                                         struct BusLogic_ProbeInfo SavedProbeInfo[BusLogic_MaxHostAdapters];
 995                                         int MultiMasterCount = BusLogic_ProbeInfoCount - FlashPointCount;
 996                                         memcpy(SavedProbeInfo, BusLogic_ProbeInfoList, BusLogic_ProbeInfoCount * sizeof(struct BusLogic_ProbeInfo));
 997                                         memcpy(&BusLogic_ProbeInfoList[0], &SavedProbeInfo[FlashPointCount], MultiMasterCount * sizeof(struct BusLogic_ProbeInfo));
 998                                         memcpy(&BusLogic_ProbeInfoList[MultiMasterCount], &SavedProbeInfo[0], FlashPointCount * sizeof(struct BusLogic_ProbeInfo));
 999                                 }
1000                         }
1001                 }
1002         } else
1003                 BusLogic_InitializeProbeInfoListISA(PrototypeHostAdapter);
1004 }
1005
1006
1007 #endif                          /* CONFIG_PCI */
1008
1009
1010 /*
1011   BusLogic_Failure prints a standardized error message, and then returns false.
1012 */
1013
1014 static boolean BusLogic_Failure(struct BusLogic_HostAdapter *HostAdapter, char *ErrorMessage)
1015 {
1016         BusLogic_AnnounceDriver(HostAdapter);
1017         if (HostAdapter->HostAdapterBusType == BusLogic_PCI_Bus) {
1018                 BusLogic_Error("While configuring BusLogic PCI Host Adapter at\n", HostAdapter);
1019                 BusLogic_Error("Bus %d Device %d I/O Address 0x%X PCI Address 0x%X:\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1020         } else
1021                 BusLogic_Error("While configuring BusLogic Host Adapter at " "I/O Address 0x%X:\n", HostAdapter, HostAdapter->IO_Address);
1022         BusLogic_Error("%s FAILED - DETACHING\n", HostAdapter, ErrorMessage);
1023         if (BusLogic_CommandFailureReason != NULL)
1024                 BusLogic_Error("ADDITIONAL FAILURE INFO - %s\n", HostAdapter, BusLogic_CommandFailureReason);
1025         return false;
1026 }
1027
1028
1029 /*
1030   BusLogic_ProbeHostAdapter probes for a BusLogic Host Adapter.
1031 */
1032
1033 static boolean __init BusLogic_ProbeHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1034 {
1035         union BusLogic_StatusRegister StatusRegister;
1036         union BusLogic_InterruptRegister InterruptRegister;
1037         union BusLogic_GeometryRegister GeometryRegister;
1038         /*
1039            FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1040          */
1041         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1042                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1043                 FlashPointInfo->BaseAddress = (u32) HostAdapter->IO_Address;
1044                 FlashPointInfo->IRQ_Channel = HostAdapter->IRQ_Channel;
1045                 FlashPointInfo->Present = false;
1046                 if (!(FlashPoint_ProbeHostAdapter(FlashPointInfo) == 0 && FlashPointInfo->Present)) {
1047                         BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1048                         BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, " "but FlashPoint\n", HostAdapter, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1049                         BusLogic_Error("BusLogic: Probe Function failed to validate it.\n", HostAdapter);
1050                         return false;
1051                 }
1052                 if (BusLogic_GlobalOptions.TraceProbe)
1053                         BusLogic_Notice("BusLogic_Probe(0x%X): FlashPoint Found\n", HostAdapter, HostAdapter->IO_Address);
1054                 /*
1055                    Indicate the Host Adapter Probe completed successfully.
1056                  */
1057                 return true;
1058         }
1059         /*
1060            Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1061            ports that respond, and to check the values to determine if they are from a
1062            BusLogic Host Adapter.  A nonexistent I/O port will return 0xFF, in which
1063            case there is definitely no BusLogic Host Adapter at this base I/O Address.
1064            The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1065          */
1066         StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1067         InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
1068         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1069         if (BusLogic_GlobalOptions.TraceProbe)
1070                 BusLogic_Notice("BusLogic_Probe(0x%X): Status 0x%02X, Interrupt 0x%02X, " "Geometry 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All, InterruptRegister.All, GeometryRegister.All);
1071         if (StatusRegister.All == 0 || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.CommandParameterRegisterBusy || StatusRegister.sr.Reserved || StatusRegister.sr.CommandInvalid || InterruptRegister.ir.Reserved != 0)
1072                 return false;
1073         /*
1074            Check the undocumented Geometry Register to test if there is an I/O port
1075            that responded.  Adaptec Host Adapters do not implement the Geometry
1076            Register, so this test helps serve to avoid incorrectly recognizing an
1077            Adaptec 1542A or 1542B as a BusLogic.  Unfortunately, the Adaptec 1542C
1078            series does respond to the Geometry Register I/O port, but it will be
1079            rejected later when the Inquire Extended Setup Information command is
1080            issued in BusLogic_CheckHostAdapter.  The AMI FastDisk Host Adapter is a
1081            BusLogic clone that implements the same interface as earlier BusLogic
1082            Host Adapters, including the undocumented commands, and is therefore
1083            supported by this driver.  However, the AMI FastDisk always returns 0x00
1084            upon reading the Geometry Register, so the extended translation option
1085            should always be left disabled on the AMI FastDisk.
1086          */
1087         if (GeometryRegister.All == 0xFF)
1088                 return false;
1089         /*
1090            Indicate the Host Adapter Probe completed successfully.
1091          */
1092         return true;
1093 }
1094
1095
1096 /*
1097   BusLogic_HardwareResetHostAdapter issues a Hardware Reset to the Host Adapter
1098   and waits for Host Adapter Diagnostics to complete.  If HardReset is true, a
1099   Hard Reset is performed which also initiates a SCSI Bus Reset.  Otherwise, a
1100   Soft Reset is performed which only resets the Host Adapter without forcing a
1101   SCSI Bus Reset.
1102 */
1103
1104 static boolean BusLogic_HardwareResetHostAdapter(struct BusLogic_HostAdapter
1105                                                  *HostAdapter, boolean HardReset)
1106 {
1107         union BusLogic_StatusRegister StatusRegister;
1108         int TimeoutCounter;
1109         /*
1110            FlashPoint Host Adapters are Hard Reset by the FlashPoint SCCB Manager.
1111          */
1112         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1113                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1114                 FlashPointInfo->HostSoftReset = !HardReset;
1115                 FlashPointInfo->ReportDataUnderrun = true;
1116                 HostAdapter->CardHandle = FlashPoint_HardwareResetHostAdapter(FlashPointInfo);
1117                 if (HostAdapter->CardHandle == FlashPoint_BadCardHandle)
1118                         return false;
1119                 /*
1120                    Indicate the Host Adapter Hard Reset completed successfully.
1121                  */
1122                 return true;
1123         }
1124         /*
1125            Issue a Hard Reset or Soft Reset Command to the Host Adapter.  The Host
1126            Adapter should respond by setting Diagnostic Active in the Status Register.
1127          */
1128         if (HardReset)
1129                 BusLogic_HardReset(HostAdapter);
1130         else
1131                 BusLogic_SoftReset(HostAdapter);
1132         /*
1133            Wait until Diagnostic Active is set in the Status Register.
1134          */
1135         TimeoutCounter = 5 * 10000;
1136         while (--TimeoutCounter >= 0) {
1137                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1138                 if (StatusRegister.sr.DiagnosticActive)
1139                         break;
1140                 udelay(100);
1141         }
1142         if (BusLogic_GlobalOptions.TraceHardwareReset)
1143                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Active, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1144         if (TimeoutCounter < 0)
1145                 return false;
1146         /*
1147            Wait 100 microseconds to allow completion of any initial diagnostic
1148            activity which might leave the contents of the Status Register
1149            unpredictable.
1150          */
1151         udelay(100);
1152         /*
1153            Wait until Diagnostic Active is reset in the Status Register.
1154          */
1155         TimeoutCounter = 10 * 10000;
1156         while (--TimeoutCounter >= 0) {
1157                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1158                 if (!StatusRegister.sr.DiagnosticActive)
1159                         break;
1160                 udelay(100);
1161         }
1162         if (BusLogic_GlobalOptions.TraceHardwareReset)
1163                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Completed, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1164         if (TimeoutCounter < 0)
1165                 return false;
1166         /*
1167            Wait until at least one of the Diagnostic Failure, Host Adapter Ready,
1168            or Data In Register Ready bits is set in the Status Register.
1169          */
1170         TimeoutCounter = 10000;
1171         while (--TimeoutCounter >= 0) {
1172                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1173                 if (StatusRegister.sr.DiagnosticFailure || StatusRegister.sr.HostAdapterReady || StatusRegister.sr.DataInRegisterReady)
1174                         break;
1175                 udelay(100);
1176         }
1177         if (BusLogic_GlobalOptions.TraceHardwareReset)
1178                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Host Adapter Ready, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1179         if (TimeoutCounter < 0)
1180                 return false;
1181         /*
1182            If Diagnostic Failure is set or Host Adapter Ready is reset, then an
1183            error occurred during the Host Adapter diagnostics.  If Data In Register
1184            Ready is set, then there is an Error Code available.
1185          */
1186         if (StatusRegister.sr.DiagnosticFailure || !StatusRegister.sr.HostAdapterReady) {
1187                 BusLogic_CommandFailureReason = NULL;
1188                 BusLogic_Failure(HostAdapter, "HARD RESET DIAGNOSTICS");
1189                 BusLogic_Error("HOST ADAPTER STATUS REGISTER = %02X\n", HostAdapter, StatusRegister.All);
1190                 if (StatusRegister.sr.DataInRegisterReady) {
1191                         unsigned char ErrorCode = BusLogic_ReadDataInRegister(HostAdapter);
1192                         BusLogic_Error("HOST ADAPTER ERROR CODE = %d\n", HostAdapter, ErrorCode);
1193                 }
1194                 return false;
1195         }
1196         /*
1197            Indicate the Host Adapter Hard Reset completed successfully.
1198          */
1199         return true;
1200 }
1201
1202
1203 /*
1204   BusLogic_CheckHostAdapter checks to be sure this really is a BusLogic
1205   Host Adapter.
1206 */
1207
1208 static boolean __init BusLogic_CheckHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1209 {
1210         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1211         unsigned char RequestedReplyLength;
1212         boolean Result = true;
1213         /*
1214            FlashPoint Host Adapters do not require this protection.
1215          */
1216         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1217                 return true;
1218         /*
1219            Issue the Inquire Extended Setup Information command.  Only genuine
1220            BusLogic Host Adapters and true clones support this command.  Adaptec 1542C
1221            series Host Adapters that respond to the Geometry Register I/O port will
1222            fail this command.
1223          */
1224         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1225         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1226             != sizeof(ExtendedSetupInformation))
1227                 Result = false;
1228         /*
1229            Provide tracing information if requested and return.
1230          */
1231         if (BusLogic_GlobalOptions.TraceProbe)
1232                 BusLogic_Notice("BusLogic_Check(0x%X): MultiMaster %s\n", HostAdapter, HostAdapter->IO_Address, (Result ? "Found" : "Not Found"));
1233         return Result;
1234 }
1235
1236
1237 /*
1238   BusLogic_ReadHostAdapterConfiguration reads the Configuration Information
1239   from Host Adapter and initializes the Host Adapter structure.
1240 */
1241
1242 static boolean __init BusLogic_ReadHostAdapterConfiguration(struct BusLogic_HostAdapter
1243                                                             *HostAdapter)
1244 {
1245         struct BusLogic_BoardID BoardID;
1246         struct BusLogic_Configuration Configuration;
1247         struct BusLogic_SetupInformation SetupInformation;
1248         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1249         unsigned char HostAdapterModelNumber[5];
1250         unsigned char FirmwareVersion3rdDigit;
1251         unsigned char FirmwareVersionLetter;
1252         struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
1253         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
1254         struct BusLogic_AutoSCSIData AutoSCSIData;
1255         union BusLogic_GeometryRegister GeometryRegister;
1256         unsigned char RequestedReplyLength;
1257         unsigned char *TargetPointer, Character;
1258         int TargetID, i;
1259         /*
1260            Configuration Information for FlashPoint Host Adapters is provided in the
1261            FlashPoint_Info structure by the FlashPoint SCCB Manager's Probe Function.
1262            Initialize fields in the Host Adapter structure from the FlashPoint_Info
1263            structure.
1264          */
1265         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1266                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1267                 TargetPointer = HostAdapter->ModelName;
1268                 *TargetPointer++ = 'B';
1269                 *TargetPointer++ = 'T';
1270                 *TargetPointer++ = '-';
1271                 for (i = 0; i < sizeof(FlashPointInfo->ModelNumber); i++)
1272                         *TargetPointer++ = FlashPointInfo->ModelNumber[i];
1273                 *TargetPointer++ = '\0';
1274                 strcpy(HostAdapter->FirmwareVersion, FlashPoint_FirmwareVersion);
1275                 HostAdapter->SCSI_ID = FlashPointInfo->SCSI_ID;
1276                 HostAdapter->ExtendedTranslationEnabled = FlashPointInfo->ExtendedTranslationEnabled;
1277                 HostAdapter->ParityCheckingEnabled = FlashPointInfo->ParityCheckingEnabled;
1278                 HostAdapter->BusResetEnabled = !FlashPointInfo->HostSoftReset;
1279                 HostAdapter->LevelSensitiveInterrupt = true;
1280                 HostAdapter->HostWideSCSI = FlashPointInfo->HostWideSCSI;
1281                 HostAdapter->HostDifferentialSCSI = false;
1282                 HostAdapter->HostSupportsSCAM = true;
1283                 HostAdapter->HostUltraSCSI = true;
1284                 HostAdapter->ExtendedLUNSupport = true;
1285                 HostAdapter->TerminationInfoValid = true;
1286                 HostAdapter->LowByteTerminated = FlashPointInfo->LowByteTerminated;
1287                 HostAdapter->HighByteTerminated = FlashPointInfo->HighByteTerminated;
1288                 HostAdapter->SCAM_Enabled = FlashPointInfo->SCAM_Enabled;
1289                 HostAdapter->SCAM_Level2 = FlashPointInfo->SCAM_Level2;
1290                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1291                 HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1292                 HostAdapter->MaxLogicalUnits = 32;
1293                 HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1294                 HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1295                 HostAdapter->DriverQueueDepth = 255;
1296                 HostAdapter->HostAdapterQueueDepth = HostAdapter->DriverQueueDepth;
1297                 HostAdapter->SynchronousPermitted = FlashPointInfo->SynchronousPermitted;
1298                 HostAdapter->FastPermitted = FlashPointInfo->FastPermitted;
1299                 HostAdapter->UltraPermitted = FlashPointInfo->UltraPermitted;
1300                 HostAdapter->WidePermitted = FlashPointInfo->WidePermitted;
1301                 HostAdapter->DisconnectPermitted = FlashPointInfo->DisconnectPermitted;
1302                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1303                 goto Common;
1304         }
1305         /*
1306            Issue the Inquire Board ID command.
1307          */
1308         if (BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID)) != sizeof(BoardID))
1309                 return BusLogic_Failure(HostAdapter, "INQUIRE BOARD ID");
1310         /*
1311            Issue the Inquire Configuration command.
1312          */
1313         if (BusLogic_Command(HostAdapter, BusLogic_InquireConfiguration, NULL, 0, &Configuration, sizeof(Configuration))
1314             != sizeof(Configuration))
1315                 return BusLogic_Failure(HostAdapter, "INQUIRE CONFIGURATION");
1316         /*
1317            Issue the Inquire Setup Information command.
1318          */
1319         RequestedReplyLength = sizeof(SetupInformation);
1320         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
1321             != sizeof(SetupInformation))
1322                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
1323         /*
1324            Issue the Inquire Extended Setup Information command.
1325          */
1326         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1327         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1328             != sizeof(ExtendedSetupInformation))
1329                 return BusLogic_Failure(HostAdapter, "INQUIRE EXTENDED SETUP INFORMATION");
1330         /*
1331            Issue the Inquire Firmware Version 3rd Digit command.
1332          */
1333         FirmwareVersion3rdDigit = '\0';
1334         if (BoardID.FirmwareVersion1stDigit > '0')
1335                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersion3rdDigit, NULL, 0, &FirmwareVersion3rdDigit, sizeof(FirmwareVersion3rdDigit))
1336                     != sizeof(FirmwareVersion3rdDigit))
1337                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE 3RD DIGIT");
1338         /*
1339            Issue the Inquire Host Adapter Model Number command.
1340          */
1341         if (ExtendedSetupInformation.BusType == 'A' && BoardID.FirmwareVersion1stDigit == '2')
1342                 /* BusLogic BT-542B ISA 2.xx */
1343                 strcpy(HostAdapterModelNumber, "542B");
1344         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '2' && (BoardID.FirmwareVersion2ndDigit <= '1' || (BoardID.FirmwareVersion2ndDigit == '2' && FirmwareVersion3rdDigit == '0')))
1345                 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1346                 strcpy(HostAdapterModelNumber, "742A");
1347         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '0')
1348                 /* AMI FastDisk EISA Series 441 0.x */
1349                 strcpy(HostAdapterModelNumber, "747A");
1350         else {
1351                 RequestedReplyLength = sizeof(HostAdapterModelNumber);
1352                 if (BusLogic_Command(HostAdapter, BusLogic_InquireHostAdapterModelNumber, &RequestedReplyLength, sizeof(RequestedReplyLength), &HostAdapterModelNumber, sizeof(HostAdapterModelNumber))
1353                     != sizeof(HostAdapterModelNumber))
1354                         return BusLogic_Failure(HostAdapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
1355         }
1356         /*
1357            BusLogic MultiMaster Host Adapters can be identified by their model number
1358            and the major version number of their firmware as follows:
1359
1360            5.xx       BusLogic "W" Series Host Adapters:
1361            BT-948/958/958D
1362            4.xx       BusLogic "C" Series Host Adapters:
1363            BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1364            3.xx       BusLogic "S" Series Host Adapters:
1365            BT-747S/747D/757S/757D/445S/545S/542D
1366            BT-542B/742A (revision H)
1367            2.xx       BusLogic "A" Series Host Adapters:
1368            BT-542B/742A (revision G and below)
1369            0.xx       AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1370          */
1371         /*
1372            Save the Model Name and Host Adapter Name in the Host Adapter structure.
1373          */
1374         TargetPointer = HostAdapter->ModelName;
1375         *TargetPointer++ = 'B';
1376         *TargetPointer++ = 'T';
1377         *TargetPointer++ = '-';
1378         for (i = 0; i < sizeof(HostAdapterModelNumber); i++) {
1379                 Character = HostAdapterModelNumber[i];
1380                 if (Character == ' ' || Character == '\0')
1381                         break;
1382                 *TargetPointer++ = Character;
1383         }
1384         *TargetPointer++ = '\0';
1385         /*
1386            Save the Firmware Version in the Host Adapter structure.
1387          */
1388         TargetPointer = HostAdapter->FirmwareVersion;
1389         *TargetPointer++ = BoardID.FirmwareVersion1stDigit;
1390         *TargetPointer++ = '.';
1391         *TargetPointer++ = BoardID.FirmwareVersion2ndDigit;
1392         if (FirmwareVersion3rdDigit != ' ' && FirmwareVersion3rdDigit != '\0')
1393                 *TargetPointer++ = FirmwareVersion3rdDigit;
1394         *TargetPointer = '\0';
1395         /*
1396            Issue the Inquire Firmware Version Letter command.
1397          */
1398         if (strcmp(HostAdapter->FirmwareVersion, "3.3") >= 0) {
1399                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersionLetter, NULL, 0, &FirmwareVersionLetter, sizeof(FirmwareVersionLetter))
1400                     != sizeof(FirmwareVersionLetter))
1401                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE VERSION LETTER");
1402                 if (FirmwareVersionLetter != ' ' && FirmwareVersionLetter != '\0')
1403                         *TargetPointer++ = FirmwareVersionLetter;
1404                 *TargetPointer = '\0';
1405         }
1406         /*
1407            Save the Host Adapter SCSI ID in the Host Adapter structure.
1408          */
1409         HostAdapter->SCSI_ID = Configuration.HostAdapterID;
1410         /*
1411            Determine the Bus Type and save it in the Host Adapter structure, determine
1412            and save the IRQ Channel if necessary, and determine and save the DMA
1413            Channel for ISA Host Adapters.
1414          */
1415         HostAdapter->HostAdapterBusType = BusLogic_HostAdapterBusTypes[HostAdapter->ModelName[3] - '4'];
1416         if (HostAdapter->IRQ_Channel == 0) {
1417                 if (Configuration.IRQ_Channel9)
1418                         HostAdapter->IRQ_Channel = 9;
1419                 else if (Configuration.IRQ_Channel10)
1420                         HostAdapter->IRQ_Channel = 10;
1421                 else if (Configuration.IRQ_Channel11)
1422                         HostAdapter->IRQ_Channel = 11;
1423                 else if (Configuration.IRQ_Channel12)
1424                         HostAdapter->IRQ_Channel = 12;
1425                 else if (Configuration.IRQ_Channel14)
1426                         HostAdapter->IRQ_Channel = 14;
1427                 else if (Configuration.IRQ_Channel15)
1428                         HostAdapter->IRQ_Channel = 15;
1429         }
1430         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus) {
1431                 if (Configuration.DMA_Channel5)
1432                         HostAdapter->DMA_Channel = 5;
1433                 else if (Configuration.DMA_Channel6)
1434                         HostAdapter->DMA_Channel = 6;
1435                 else if (Configuration.DMA_Channel7)
1436                         HostAdapter->DMA_Channel = 7;
1437         }
1438         /*
1439            Determine whether Extended Translation is enabled and save it in
1440            the Host Adapter structure.
1441          */
1442         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1443         HostAdapter->ExtendedTranslationEnabled = GeometryRegister.gr.ExtendedTranslationEnabled;
1444         /*
1445            Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1446            SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1447            Ultra SCSI flag in the Host Adapter structure.
1448          */
1449         HostAdapter->HostAdapterScatterGatherLimit = ExtendedSetupInformation.ScatterGatherLimit;
1450         HostAdapter->DriverScatterGatherLimit = HostAdapter->HostAdapterScatterGatherLimit;
1451         if (HostAdapter->HostAdapterScatterGatherLimit > BusLogic_ScatterGatherLimit)
1452                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1453         if (ExtendedSetupInformation.Misc.LevelSensitiveInterrupt)
1454                 HostAdapter->LevelSensitiveInterrupt = true;
1455         HostAdapter->HostWideSCSI = ExtendedSetupInformation.HostWideSCSI;
1456         HostAdapter->HostDifferentialSCSI = ExtendedSetupInformation.HostDifferentialSCSI;
1457         HostAdapter->HostSupportsSCAM = ExtendedSetupInformation.HostSupportsSCAM;
1458         HostAdapter->HostUltraSCSI = ExtendedSetupInformation.HostUltraSCSI;
1459         /*
1460            Determine whether Extended LUN Format CCBs are supported and save the
1461            information in the Host Adapter structure.
1462          */
1463         if (HostAdapter->FirmwareVersion[0] == '5' || (HostAdapter->FirmwareVersion[0] == '4' && HostAdapter->HostWideSCSI))
1464                 HostAdapter->ExtendedLUNSupport = true;
1465         /*
1466            Issue the Inquire PCI Host Adapter Information command to read the
1467            Termination Information from "W" series MultiMaster Host Adapters.
1468          */
1469         if (HostAdapter->FirmwareVersion[0] == '5') {
1470                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
1471                     != sizeof(PCIHostAdapterInformation))
1472                         return BusLogic_Failure(HostAdapter, "INQUIRE PCI HOST ADAPTER INFORMATION");
1473                 /*
1474                    Save the Termination Information in the Host Adapter structure.
1475                  */
1476                 if (PCIHostAdapterInformation.GenericInfoValid) {
1477                         HostAdapter->TerminationInfoValid = true;
1478                         HostAdapter->LowByteTerminated = PCIHostAdapterInformation.LowByteTerminated;
1479                         HostAdapter->HighByteTerminated = PCIHostAdapterInformation.HighByteTerminated;
1480                 }
1481         }
1482         /*
1483            Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data
1484            from "W" and "C" series MultiMaster Host Adapters.
1485          */
1486         if (HostAdapter->FirmwareVersion[0] >= '4') {
1487                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset;
1488                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIData);
1489                 if (BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIData, sizeof(AutoSCSIData))
1490                     != sizeof(AutoSCSIData))
1491                         return BusLogic_Failure(HostAdapter, "FETCH HOST ADAPTER LOCAL RAM");
1492                 /*
1493                    Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
1494                    Information in the Host Adapter structure.
1495                  */
1496                 HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
1497                 HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
1498                 if (HostAdapter->FirmwareVersion[0] == '4') {
1499                         HostAdapter->TerminationInfoValid = true;
1500                         HostAdapter->LowByteTerminated = AutoSCSIData.LowByteTerminated;
1501                         HostAdapter->HighByteTerminated = AutoSCSIData.HighByteTerminated;
1502                 }
1503                 /*
1504                    Save the Wide Permitted, Fast Permitted, Synchronous Permitted,
1505                    Disconnect Permitted, Ultra Permitted, and SCAM Information in the
1506                    Host Adapter structure.
1507                  */
1508                 HostAdapter->WidePermitted = AutoSCSIData.WidePermitted;
1509                 HostAdapter->FastPermitted = AutoSCSIData.FastPermitted;
1510                 HostAdapter->SynchronousPermitted = AutoSCSIData.SynchronousPermitted;
1511                 HostAdapter->DisconnectPermitted = AutoSCSIData.DisconnectPermitted;
1512                 if (HostAdapter->HostUltraSCSI)
1513                         HostAdapter->UltraPermitted = AutoSCSIData.UltraPermitted;
1514                 if (HostAdapter->HostSupportsSCAM) {
1515                         HostAdapter->SCAM_Enabled = AutoSCSIData.SCAM_Enabled;
1516                         HostAdapter->SCAM_Level2 = AutoSCSIData.SCAM_Level2;
1517                 }
1518         }
1519         /*
1520            Initialize fields in the Host Adapter structure for "S" and "A" series
1521            MultiMaster Host Adapters.
1522          */
1523         if (HostAdapter->FirmwareVersion[0] < '4') {
1524                 if (SetupInformation.SynchronousInitiationEnabled) {
1525                         HostAdapter->SynchronousPermitted = 0xFF;
1526                         if (HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus) {
1527                                 if (ExtendedSetupInformation.Misc.FastOnEISA)
1528                                         HostAdapter->FastPermitted = 0xFF;
1529                                 if (strcmp(HostAdapter->ModelName, "BT-757") == 0)
1530                                         HostAdapter->WidePermitted = 0xFF;
1531                         }
1532                 }
1533                 HostAdapter->DisconnectPermitted = 0xFF;
1534                 HostAdapter->ParityCheckingEnabled = SetupInformation.ParityCheckingEnabled;
1535                 HostAdapter->BusResetEnabled = true;
1536         }
1537         /*
1538            Determine the maximum number of Target IDs and Logical Units supported by
1539            this driver for Wide and Narrow Host Adapters.
1540          */
1541         HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1542         HostAdapter->MaxLogicalUnits = (HostAdapter->ExtendedLUNSupport ? 32 : 8);
1543         /*
1544            Select appropriate values for the Mailbox Count, Driver Queue Depth,
1545            Initial CCBs, and Incremental CCBs variables based on whether or not Strict
1546            Round Robin Mode is supported.  If Strict Round Robin Mode is supported,
1547            then there is no performance degradation in using the maximum possible
1548            number of Outgoing and Incoming Mailboxes and allowing the Tagged and
1549            Untagged Queue Depths to determine the actual utilization.  If Strict Round
1550            Robin Mode is not supported, then the Host Adapter must scan all the
1551            Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can
1552            cause a substantial performance penalty.  The host adapters actually have
1553            room to store the following number of CCBs internally; that is, they can
1554            internally queue and manage this many active commands on the SCSI bus
1555            simultaneously.  Performance measurements demonstrate that the Driver Queue
1556            Depth should be set to the Mailbox Count, rather than the Host Adapter
1557            Queue Depth (internal CCB capacity), as it is more efficient to have the
1558            queued commands waiting in Outgoing Mailboxes if necessary than to block
1559            the process in the higher levels of the SCSI Subsystem.
1560
1561            192          BT-948/958/958D
1562            100          BT-946C/956C/956CD/747C/757C/757CD/445C
1563            50   BT-545C/540CF
1564            30   BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
1565          */
1566         if (HostAdapter->FirmwareVersion[0] == '5')
1567                 HostAdapter->HostAdapterQueueDepth = 192;
1568         else if (HostAdapter->FirmwareVersion[0] == '4')
1569                 HostAdapter->HostAdapterQueueDepth = (HostAdapter->HostAdapterBusType != BusLogic_ISA_Bus ? 100 : 50);
1570         else
1571                 HostAdapter->HostAdapterQueueDepth = 30;
1572         if (strcmp(HostAdapter->FirmwareVersion, "3.31") >= 0) {
1573                 HostAdapter->StrictRoundRobinModeSupport = true;
1574                 HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
1575         } else {
1576                 HostAdapter->StrictRoundRobinModeSupport = false;
1577                 HostAdapter->MailboxCount = 32;
1578         }
1579         HostAdapter->DriverQueueDepth = HostAdapter->MailboxCount;
1580         HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1581         HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1582         /*
1583            Tagged Queuing support is available and operates properly on all "W" series
1584            MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with
1585            firmware version 4.22 and above, and on "S" series MultiMaster Host
1586            Adapters with firmware version 3.35 and above.
1587          */
1588         HostAdapter->TaggedQueuingPermitted = 0;
1589         switch (HostAdapter->FirmwareVersion[0]) {
1590         case '5':
1591                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1592                 break;
1593         case '4':
1594                 if (strcmp(HostAdapter->FirmwareVersion, "4.22") >= 0)
1595                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1596                 break;
1597         case '3':
1598                 if (strcmp(HostAdapter->FirmwareVersion, "3.35") >= 0)
1599                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1600                 break;
1601         }
1602         /*
1603            Determine the Host Adapter BIOS Address if the BIOS is enabled and
1604            save it in the Host Adapter structure.  The BIOS is disabled if the
1605            BIOS_Address is 0.
1606          */
1607         HostAdapter->BIOS_Address = ExtendedSetupInformation.BIOS_Address << 12;
1608         /*
1609            ISA Host Adapters require Bounce Buffers if there is more than 16MB memory.
1610          */
1611         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1612                 HostAdapter->BounceBuffersRequired = true;
1613         /*
1614            BusLogic BT-445S Host Adapters prior to board revision E have a hardware
1615            bug whereby when the BIOS is enabled, transfers to/from the same address
1616            range the BIOS occupies modulo 16MB are handled incorrectly.  Only properly
1617            functioning BT-445S Host Adapters have firmware version 3.37, so require
1618            that ISA Bounce Buffers be used for the buggy BT-445S models if there is
1619            more than 16MB memory.
1620          */
1621         if (HostAdapter->BIOS_Address > 0 && strcmp(HostAdapter->ModelName, "BT-445S") == 0 && strcmp(HostAdapter->FirmwareVersion, "3.37") < 0 && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1622                 HostAdapter->BounceBuffersRequired = true;
1623         /*
1624            Initialize parameters common to MultiMaster and FlashPoint Host Adapters.
1625          */
1626       Common:
1627         /*
1628            Initialize the Host Adapter Full Model Name from the Model Name.
1629          */
1630         strcpy(HostAdapter->FullModelName, "BusLogic ");
1631         strcat(HostAdapter->FullModelName, HostAdapter->ModelName);
1632         /*
1633            Select an appropriate value for the Tagged Queue Depth either from a
1634            BusLogic Driver Options specification, or based on whether this Host
1635            Adapter requires that ISA Bounce Buffers be used.  The Tagged Queue Depth
1636            is left at 0 for automatic determination in BusLogic_SelectQueueDepths.
1637            Initialize the Untagged Queue Depth.
1638          */
1639         for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
1640                 unsigned char QueueDepth = 0;
1641                 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->QueueDepth[TargetID] > 0)
1642                         QueueDepth = HostAdapter->DriverOptions->QueueDepth[TargetID];
1643                 else if (HostAdapter->BounceBuffersRequired)
1644                         QueueDepth = BusLogic_TaggedQueueDepthBB;
1645                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
1646         }
1647         if (HostAdapter->BounceBuffersRequired)
1648                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepthBB;
1649         else
1650                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepth;
1651         if (HostAdapter->DriverOptions != NULL)
1652                 HostAdapter->CommonQueueDepth = HostAdapter->DriverOptions->CommonQueueDepth;
1653         if (HostAdapter->CommonQueueDepth > 0 && HostAdapter->CommonQueueDepth < HostAdapter->UntaggedQueueDepth)
1654                 HostAdapter->UntaggedQueueDepth = HostAdapter->CommonQueueDepth;
1655         /*
1656            Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1657            Therefore, mask the Tagged Queuing Permitted Default bits with the
1658            Disconnect/Reconnect Permitted bits.
1659          */
1660         HostAdapter->TaggedQueuingPermitted &= HostAdapter->DisconnectPermitted;
1661         /*
1662            Combine the default Tagged Queuing Permitted bits with any BusLogic Driver
1663            Options Tagged Queuing specification.
1664          */
1665         if (HostAdapter->DriverOptions != NULL)
1666                 HostAdapter->TaggedQueuingPermitted =
1667                     (HostAdapter->DriverOptions->TaggedQueuingPermitted & HostAdapter->DriverOptions->TaggedQueuingPermittedMask) | (HostAdapter->TaggedQueuingPermitted & ~HostAdapter->DriverOptions->TaggedQueuingPermittedMask);
1668
1669         /*
1670            Select an appropriate value for Bus Settle Time either from a BusLogic
1671            Driver Options specification, or from BusLogic_DefaultBusSettleTime.
1672          */
1673         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->BusSettleTime > 0)
1674                 HostAdapter->BusSettleTime = HostAdapter->DriverOptions->BusSettleTime;
1675         else
1676                 HostAdapter->BusSettleTime = BusLogic_DefaultBusSettleTime;
1677         /*
1678            Indicate reading the Host Adapter Configuration completed successfully.
1679          */
1680         return true;
1681 }
1682
1683
1684 /*
1685   BusLogic_ReportHostAdapterConfiguration reports the configuration of
1686   Host Adapter.
1687 */
1688
1689 static boolean __init BusLogic_ReportHostAdapterConfiguration(struct BusLogic_HostAdapter
1690                                                               *HostAdapter)
1691 {
1692         unsigned short AllTargetsMask = (1 << HostAdapter->MaxTargetDevices) - 1;
1693         unsigned short SynchronousPermitted, FastPermitted;
1694         unsigned short UltraPermitted, WidePermitted;
1695         unsigned short DisconnectPermitted, TaggedQueuingPermitted;
1696         boolean CommonSynchronousNegotiation, CommonTaggedQueueDepth;
1697         char SynchronousString[BusLogic_MaxTargetDevices + 1];
1698         char WideString[BusLogic_MaxTargetDevices + 1];
1699         char DisconnectString[BusLogic_MaxTargetDevices + 1];
1700         char TaggedQueuingString[BusLogic_MaxTargetDevices + 1];
1701         char *SynchronousMessage = SynchronousString;
1702         char *WideMessage = WideString;
1703         char *DisconnectMessage = DisconnectString;
1704         char *TaggedQueuingMessage = TaggedQueuingString;
1705         int TargetID;
1706         BusLogic_Info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n",
1707                       HostAdapter, HostAdapter->ModelName,
1708                       BusLogic_HostAdapterBusNames[HostAdapter->HostAdapterBusType], (HostAdapter->HostWideSCSI ? " Wide" : ""), (HostAdapter->HostDifferentialSCSI ? " Differential" : ""), (HostAdapter->HostUltraSCSI ? " Ultra" : ""));
1709         BusLogic_Info("  Firmware Version: %s, I/O Address: 0x%X, " "IRQ Channel: %d/%s\n", HostAdapter, HostAdapter->FirmwareVersion, HostAdapter->IO_Address, HostAdapter->IRQ_Channel, (HostAdapter->LevelSensitiveInterrupt ? "Level" : "Edge"));
1710         if (HostAdapter->HostAdapterBusType != BusLogic_PCI_Bus) {
1711                 BusLogic_Info("  DMA Channel: ", HostAdapter);
1712                 if (HostAdapter->DMA_Channel > 0)
1713                         BusLogic_Info("%d, ", HostAdapter, HostAdapter->DMA_Channel);
1714                 else
1715                         BusLogic_Info("None, ", HostAdapter);
1716                 if (HostAdapter->BIOS_Address > 0)
1717                         BusLogic_Info("BIOS Address: 0x%X, ", HostAdapter, HostAdapter->BIOS_Address);
1718                 else
1719                         BusLogic_Info("BIOS Address: None, ", HostAdapter);
1720         } else {
1721                 BusLogic_Info("  PCI Bus: %d, Device: %d, Address: ", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1722                 if (HostAdapter->PCI_Address > 0)
1723                         BusLogic_Info("0x%X, ", HostAdapter, HostAdapter->PCI_Address);
1724                 else
1725                         BusLogic_Info("Unassigned, ", HostAdapter);
1726         }
1727         BusLogic_Info("Host Adapter SCSI ID: %d\n", HostAdapter, HostAdapter->SCSI_ID);
1728         BusLogic_Info("  Parity Checking: %s, Extended Translation: %s\n", HostAdapter, (HostAdapter->ParityCheckingEnabled ? "Enabled" : "Disabled"), (HostAdapter->ExtendedTranslationEnabled ? "Enabled" : "Disabled"));
1729         AllTargetsMask &= ~(1 << HostAdapter->SCSI_ID);
1730         SynchronousPermitted = HostAdapter->SynchronousPermitted & AllTargetsMask;
1731         FastPermitted = HostAdapter->FastPermitted & AllTargetsMask;
1732         UltraPermitted = HostAdapter->UltraPermitted & AllTargetsMask;
1733         if ((BusLogic_MultiMasterHostAdapterP(HostAdapter) && (HostAdapter->FirmwareVersion[0] >= '4' || HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus)) || BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1734                 CommonSynchronousNegotiation = false;
1735                 if (SynchronousPermitted == 0) {
1736                         SynchronousMessage = "Disabled";
1737                         CommonSynchronousNegotiation = true;
1738                 } else if (SynchronousPermitted == AllTargetsMask) {
1739                         if (FastPermitted == 0) {
1740                                 SynchronousMessage = "Slow";
1741                                 CommonSynchronousNegotiation = true;
1742                         } else if (FastPermitted == AllTargetsMask) {
1743                                 if (UltraPermitted == 0) {
1744                                         SynchronousMessage = "Fast";
1745                                         CommonSynchronousNegotiation = true;
1746                                 } else if (UltraPermitted == AllTargetsMask) {
1747                                         SynchronousMessage = "Ultra";
1748                                         CommonSynchronousNegotiation = true;
1749                                 }
1750                         }
1751                 }
1752                 if (!CommonSynchronousNegotiation) {
1753                         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1754                                 SynchronousString[TargetID] = ((!(SynchronousPermitted & (1 << TargetID))) ? 'N' : (!(FastPermitted & (1 << TargetID)) ? 'S' : (!(UltraPermitted & (1 << TargetID)) ? 'F' : 'U')));
1755                         SynchronousString[HostAdapter->SCSI_ID] = '#';
1756                         SynchronousString[HostAdapter->MaxTargetDevices] = '\0';
1757                 }
1758         } else
1759                 SynchronousMessage = (SynchronousPermitted == 0 ? "Disabled" : "Enabled");
1760         WidePermitted = HostAdapter->WidePermitted & AllTargetsMask;
1761         if (WidePermitted == 0)
1762                 WideMessage = "Disabled";
1763         else if (WidePermitted == AllTargetsMask)
1764                 WideMessage = "Enabled";
1765         else {
1766                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1767                         WideString[TargetID] = ((WidePermitted & (1 << TargetID)) ? 'Y' : 'N');
1768                 WideString[HostAdapter->SCSI_ID] = '#';
1769                 WideString[HostAdapter->MaxTargetDevices] = '\0';
1770         }
1771         DisconnectPermitted = HostAdapter->DisconnectPermitted & AllTargetsMask;
1772         if (DisconnectPermitted == 0)
1773                 DisconnectMessage = "Disabled";
1774         else if (DisconnectPermitted == AllTargetsMask)
1775                 DisconnectMessage = "Enabled";
1776         else {
1777                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1778                         DisconnectString[TargetID] = ((DisconnectPermitted & (1 << TargetID)) ? 'Y' : 'N');
1779                 DisconnectString[HostAdapter->SCSI_ID] = '#';
1780                 DisconnectString[HostAdapter->MaxTargetDevices] = '\0';
1781         }
1782         TaggedQueuingPermitted = HostAdapter->TaggedQueuingPermitted & AllTargetsMask;
1783         if (TaggedQueuingPermitted == 0)
1784                 TaggedQueuingMessage = "Disabled";
1785         else if (TaggedQueuingPermitted == AllTargetsMask)
1786                 TaggedQueuingMessage = "Enabled";
1787         else {
1788                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1789                         TaggedQueuingString[TargetID] = ((TaggedQueuingPermitted & (1 << TargetID)) ? 'Y' : 'N');
1790                 TaggedQueuingString[HostAdapter->SCSI_ID] = '#';
1791                 TaggedQueuingString[HostAdapter->MaxTargetDevices] = '\0';
1792         }
1793         BusLogic_Info("  Synchronous Negotiation: %s, Wide Negotiation: %s\n", HostAdapter, SynchronousMessage, WideMessage);
1794         BusLogic_Info("  Disconnect/Reconnect: %s, Tagged Queuing: %s\n", HostAdapter, DisconnectMessage, TaggedQueuingMessage);
1795         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
1796                 BusLogic_Info("  Scatter/Gather Limit: %d of %d segments, " "Mailboxes: %d\n", HostAdapter, HostAdapter->DriverScatterGatherLimit, HostAdapter->HostAdapterScatterGatherLimit, HostAdapter->MailboxCount);
1797                 BusLogic_Info("  Driver Queue Depth: %d, " "Host Adapter Queue Depth: %d\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->HostAdapterQueueDepth);
1798         } else
1799                 BusLogic_Info("  Driver Queue Depth: %d, " "Scatter/Gather Limit: %d segments\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->DriverScatterGatherLimit);
1800         BusLogic_Info("  Tagged Queue Depth: ", HostAdapter);
1801         CommonTaggedQueueDepth = true;
1802         for (TargetID = 1; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1803                 if (HostAdapter->QueueDepth[TargetID] != HostAdapter->QueueDepth[0]) {
1804                         CommonTaggedQueueDepth = false;
1805                         break;
1806                 }
1807         if (CommonTaggedQueueDepth) {
1808                 if (HostAdapter->QueueDepth[0] > 0)
1809                         BusLogic_Info("%d", HostAdapter, HostAdapter->QueueDepth[0]);
1810                 else
1811                         BusLogic_Info("Automatic", HostAdapter);
1812         } else
1813                 BusLogic_Info("Individual", HostAdapter);
1814         BusLogic_Info(", Untagged Queue Depth: %d\n", HostAdapter, HostAdapter->UntaggedQueueDepth);
1815         if (HostAdapter->TerminationInfoValid) {
1816                 if (HostAdapter->HostWideSCSI)
1817                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? (HostAdapter->HighByteTerminated ? "Both Enabled" : "Low Enabled")
1818                                                                                   : (HostAdapter->HighByteTerminated ? "High Enabled" : "Both Disabled")));
1819                 else
1820                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? "Enabled" : "Disabled"));
1821                 if (HostAdapter->HostSupportsSCAM)
1822                         BusLogic_Info(", SCAM: %s", HostAdapter, (HostAdapter->SCAM_Enabled ? (HostAdapter->SCAM_Level2 ? "Enabled, Level 2" : "Enabled, Level 1")
1823                                                                   : "Disabled"));
1824                 BusLogic_Info("\n", HostAdapter);
1825         }
1826         /*
1827            Indicate reporting the Host Adapter configuration completed successfully.
1828          */
1829         return true;
1830 }
1831
1832
1833 /*
1834   BusLogic_AcquireResources acquires the system resources necessary to use
1835   Host Adapter.
1836 */
1837
1838 static boolean __init BusLogic_AcquireResources(struct BusLogic_HostAdapter *HostAdapter)
1839 {
1840         if (HostAdapter->IRQ_Channel == 0) {
1841                 BusLogic_Error("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n", HostAdapter);
1842                 return false;
1843         }
1844         /*
1845            Acquire shared access to the IRQ Channel.
1846          */
1847         if (request_irq(HostAdapter->IRQ_Channel, BusLogic_InterruptHandler, IRQF_SHARED, HostAdapter->FullModelName, HostAdapter) < 0) {
1848                 BusLogic_Error("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->IRQ_Channel);
1849                 return false;
1850         }
1851         HostAdapter->IRQ_ChannelAcquired = true;
1852         /*
1853            Acquire exclusive access to the DMA Channel.
1854          */
1855         if (HostAdapter->DMA_Channel > 0) {
1856                 if (request_dma(HostAdapter->DMA_Channel, HostAdapter->FullModelName) < 0) {
1857                         BusLogic_Error("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->DMA_Channel);
1858                         return false;
1859                 }
1860                 set_dma_mode(HostAdapter->DMA_Channel, DMA_MODE_CASCADE);
1861                 enable_dma(HostAdapter->DMA_Channel);
1862                 HostAdapter->DMA_ChannelAcquired = true;
1863         }
1864         /*
1865            Indicate the System Resource Acquisition completed successfully,
1866          */
1867         return true;
1868 }
1869
1870
1871 /*
1872   BusLogic_ReleaseResources releases any system resources previously acquired
1873   by BusLogic_AcquireResources.
1874 */
1875
1876 static void BusLogic_ReleaseResources(struct BusLogic_HostAdapter *HostAdapter)
1877 {
1878         /*
1879            Release shared access to the IRQ Channel.
1880          */
1881         if (HostAdapter->IRQ_ChannelAcquired)
1882                 free_irq(HostAdapter->IRQ_Channel, HostAdapter);
1883         /*
1884            Release exclusive access to the DMA Channel.
1885          */
1886         if (HostAdapter->DMA_ChannelAcquired)
1887                 free_dma(HostAdapter->DMA_Channel);
1888         /*
1889            Release any allocated memory structs not released elsewhere
1890          */
1891         if (HostAdapter->MailboxSpace)
1892                 pci_free_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, HostAdapter->MailboxSpace, HostAdapter->MailboxSpaceHandle);
1893         pci_dev_put(HostAdapter->PCI_Device);
1894         HostAdapter->MailboxSpace = NULL;
1895         HostAdapter->MailboxSpaceHandle = 0;
1896         HostAdapter->MailboxSize = 0;
1897 }
1898
1899
1900 /*
1901   BusLogic_InitializeHostAdapter initializes Host Adapter.  This is the only
1902   function called during SCSI Host Adapter detection which modifies the state
1903   of the Host Adapter from its initial power on or hard reset state.
1904 */
1905
1906 static boolean BusLogic_InitializeHostAdapter(struct BusLogic_HostAdapter
1907                                               *HostAdapter)
1908 {
1909         struct BusLogic_ExtendedMailboxRequest ExtendedMailboxRequest;
1910         enum BusLogic_RoundRobinModeRequest RoundRobinModeRequest;
1911         enum BusLogic_SetCCBFormatRequest SetCCBFormatRequest;
1912         int TargetID;
1913         /*
1914            Initialize the pointers to the first and last CCBs that are queued for
1915            completion processing.
1916          */
1917         HostAdapter->FirstCompletedCCB = NULL;
1918         HostAdapter->LastCompletedCCB = NULL;
1919         /*
1920            Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
1921            Command Successful Flag, Active Commands, and Commands Since Reset
1922            for each Target Device.
1923          */
1924         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
1925                 HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
1926                 HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
1927                 HostAdapter->TargetFlags[TargetID].CommandSuccessfulFlag = false;
1928                 HostAdapter->ActiveCommands[TargetID] = 0;
1929                 HostAdapter->CommandsSinceReset[TargetID] = 0;
1930         }
1931         /*
1932            FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
1933          */
1934         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1935                 goto Done;
1936         /*
1937            Initialize the Outgoing and Incoming Mailbox pointers.
1938          */
1939         HostAdapter->MailboxSize = HostAdapter->MailboxCount * (sizeof(struct BusLogic_OutgoingMailbox) + sizeof(struct BusLogic_IncomingMailbox));
1940         HostAdapter->MailboxSpace = pci_alloc_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, &HostAdapter->MailboxSpaceHandle);
1941         if (HostAdapter->MailboxSpace == NULL)
1942                 return BusLogic_Failure(HostAdapter, "MAILBOX ALLOCATION");
1943         HostAdapter->FirstOutgoingMailbox = (struct BusLogic_OutgoingMailbox *) HostAdapter->MailboxSpace;
1944         HostAdapter->LastOutgoingMailbox = HostAdapter->FirstOutgoingMailbox + HostAdapter->MailboxCount - 1;
1945         HostAdapter->NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
1946         HostAdapter->FirstIncomingMailbox = (struct BusLogic_IncomingMailbox *) (HostAdapter->LastOutgoingMailbox + 1);
1947         HostAdapter->LastIncomingMailbox = HostAdapter->FirstIncomingMailbox + HostAdapter->MailboxCount - 1;
1948         HostAdapter->NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
1949
1950         /*
1951            Initialize the Outgoing and Incoming Mailbox structures.
1952          */
1953         memset(HostAdapter->FirstOutgoingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_OutgoingMailbox));
1954         memset(HostAdapter->FirstIncomingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_IncomingMailbox));
1955         /*
1956            Initialize the Host Adapter's Pointer to the Outgoing/Incoming Mailboxes.
1957          */
1958         ExtendedMailboxRequest.MailboxCount = HostAdapter->MailboxCount;
1959         ExtendedMailboxRequest.BaseMailboxAddress = (u32) HostAdapter->MailboxSpaceHandle;
1960         if (BusLogic_Command(HostAdapter, BusLogic_InitializeExtendedMailbox, &ExtendedMailboxRequest, sizeof(ExtendedMailboxRequest), NULL, 0) < 0)
1961                 return BusLogic_Failure(HostAdapter, "MAILBOX INITIALIZATION");
1962         /*
1963            Enable Strict Round Robin Mode if supported by the Host Adapter.  In
1964            Strict Round Robin Mode, the Host Adapter only looks at the next Outgoing
1965            Mailbox for each new command, rather than scanning through all the
1966            Outgoing Mailboxes to find any that have new commands in them.  Strict
1967            Round Robin Mode is significantly more efficient.
1968          */
1969         if (HostAdapter->StrictRoundRobinModeSupport) {
1970                 RoundRobinModeRequest = BusLogic_StrictRoundRobinMode;
1971                 if (BusLogic_Command(HostAdapter, BusLogic_EnableStrictRoundRobinMode, &RoundRobinModeRequest, sizeof(RoundRobinModeRequest), NULL, 0) < 0)
1972                         return BusLogic_Failure(HostAdapter, "ENABLE STRICT ROUND ROBIN MODE");
1973         }
1974         /*
1975            For Host Adapters that support Extended LUN Format CCBs, issue the Set CCB
1976            Format command to allow 32 Logical Units per Target Device.
1977          */
1978         if (HostAdapter->ExtendedLUNSupport) {
1979                 SetCCBFormatRequest = BusLogic_ExtendedLUNFormatCCB;
1980                 if (BusLogic_Command(HostAdapter, BusLogic_SetCCBFormat, &SetCCBFormatRequest, sizeof(SetCCBFormatRequest), NULL, 0) < 0)
1981                         return BusLogic_Failure(HostAdapter, "SET CCB FORMAT");
1982         }
1983         /*
1984            Announce Successful Initialization.
1985          */
1986       Done:
1987         if (!HostAdapter->HostAdapterInitialized) {
1988                 BusLogic_Info("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1989                 BusLogic_Info("\n", HostAdapter);
1990         } else
1991                 BusLogic_Warning("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1992         HostAdapter->HostAdapterInitialized = true;
1993         /*
1994            Indicate the Host Adapter Initialization completed successfully.
1995          */
1996         return true;
1997 }
1998
1999
2000 /*
2001   BusLogic_TargetDeviceInquiry inquires about the Target Devices accessible
2002   through Host Adapter.
2003 */
2004
2005 static boolean __init BusLogic_TargetDeviceInquiry(struct BusLogic_HostAdapter
2006                                                    *HostAdapter)
2007 {
2008         u16 InstalledDevices;
2009         u8 InstalledDevicesID0to7[8];
2010         struct BusLogic_SetupInformation SetupInformation;
2011         u8 SynchronousPeriod[BusLogic_MaxTargetDevices];
2012         unsigned char RequestedReplyLength;
2013         int TargetID;
2014         /*
2015            Wait a few seconds between the Host Adapter Hard Reset which initiates
2016            a SCSI Bus Reset and issuing any SCSI Commands.  Some SCSI devices get
2017            confused if they receive SCSI Commands too soon after a SCSI Bus Reset.
2018          */
2019         BusLogic_Delay(HostAdapter->BusSettleTime);
2020         /*
2021            FlashPoint Host Adapters do not provide for Target Device Inquiry.
2022          */
2023         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2024                 return true;
2025         /*
2026            Inhibit the Target Device Inquiry if requested.
2027          */
2028         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->LocalOptions.InhibitTargetInquiry)
2029                 return true;
2030         /*
2031            Issue the Inquire Target Devices command for host adapters with firmware
2032            version 4.25 or later, or the Inquire Installed Devices ID 0 to 7 command
2033            for older host adapters.  This is necessary to force Synchronous Transfer
2034            Negotiation so that the Inquire Setup Information and Inquire Synchronous
2035            Period commands will return valid data.  The Inquire Target Devices command
2036            is preferable to Inquire Installed Devices ID 0 to 7 since it only probes
2037            Logical Unit 0 of each Target Device.
2038          */
2039         if (strcmp(HostAdapter->FirmwareVersion, "4.25") >= 0) {
2040
2041                 /*
2042                  * Issue a Inquire Target Devices command.  Inquire Target Devices only
2043                  * tests Logical Unit 0 of each Target Device unlike the Inquire Installed
2044                  * Devices commands which test Logical Units 0 - 7.  Two bytes are
2045                  * returned, where byte 0 bit 0 set indicates that Target Device 0 exists,
2046                  * and so on.
2047                  */
2048
2049                 if (BusLogic_Command(HostAdapter, BusLogic_InquireTargetDevices, NULL, 0, &InstalledDevices, sizeof(InstalledDevices))
2050                     != sizeof(InstalledDevices))
2051                         return BusLogic_Failure(HostAdapter, "INQUIRE TARGET DEVICES");
2052                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2053                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevices & (1 << TargetID) ? true : false);
2054         } else {
2055
2056                 /*
2057                  * Issue an Inquire Installed Devices command.  For each Target Device,
2058                  * a byte is returned where bit 0 set indicates that Logical Unit 0
2059                  * exists, bit 1 set indicates that Logical Unit 1 exists, and so on.
2060                  */
2061
2062                 if (BusLogic_Command(HostAdapter, BusLogic_InquireInstalledDevicesID0to7, NULL, 0, &InstalledDevicesID0to7, sizeof(InstalledDevicesID0to7))
2063                     != sizeof(InstalledDevicesID0to7))
2064                         return BusLogic_Failure(HostAdapter, "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2065                 for (TargetID = 0; TargetID < 8; TargetID++)
2066                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevicesID0to7[TargetID] != 0 ? true : false);
2067         }
2068         /*
2069            Issue the Inquire Setup Information command.
2070          */
2071         RequestedReplyLength = sizeof(SetupInformation);
2072         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
2073             != sizeof(SetupInformation))
2074                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
2075         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2076                 HostAdapter->SynchronousOffset[TargetID] = (TargetID < 8 ? SetupInformation.SynchronousValuesID0to7[TargetID].Offset : SetupInformation.SynchronousValuesID8to15[TargetID - 8].Offset);
2077         if (strcmp(HostAdapter->FirmwareVersion, "5.06L") >= 0)
2078                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2079                         HostAdapter->TargetFlags[TargetID].WideTransfersActive = (TargetID < 8 ? (SetupInformation.WideTransfersActiveID0to7 & (1 << TargetID)
2080                                                                                                   ? true : false)
2081                                                                                   : (SetupInformation.WideTransfersActiveID8to15 & (1 << (TargetID - 8))
2082                                                                                      ? true : false));
2083         /*
2084            Issue the Inquire Synchronous Period command.
2085          */
2086         if (HostAdapter->FirmwareVersion[0] >= '3') {
2087
2088                 /* Issue a Inquire Synchronous Period command.  For each Target Device,
2089                  * a byte is returned which represents the Synchronous Transfer Period
2090                  * in units of 10 nanoseconds.
2091                  */
2092
2093                 RequestedReplyLength = sizeof(SynchronousPeriod);
2094                 if (BusLogic_Command(HostAdapter, BusLogic_InquireSynchronousPeriod, &RequestedReplyLength, sizeof(RequestedReplyLength), &SynchronousPeriod, sizeof(SynchronousPeriod))
2095                     != sizeof(SynchronousPeriod))
2096                         return BusLogic_Failure(HostAdapter, "INQUIRE SYNCHRONOUS PERIOD");
2097                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2098                         HostAdapter->SynchronousPeriod[TargetID] = SynchronousPeriod[TargetID];
2099         } else
2100                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2101                         if (SetupInformation.SynchronousValuesID0to7[TargetID].Offset > 0)
2102                                 HostAdapter->SynchronousPeriod[TargetID] = 20 + 5 * SetupInformation.SynchronousValuesID0to7[TargetID]
2103                                     .TransferPeriod;
2104         /*
2105            Indicate the Target Device Inquiry completed successfully.
2106          */
2107         return true;
2108 }
2109
2110 /*
2111   BusLogic_InitializeHostStructure initializes the fields in the SCSI Host
2112   structure.  The base, io_port, n_io_ports, irq, and dma_channel fields in the
2113   SCSI Host structure are intentionally left uninitialized, as this driver
2114   handles acquisition and release of these resources explicitly, as well as
2115   ensuring exclusive access to the Host Adapter hardware and data structures
2116   through explicit acquisition and release of the Host Adapter's Lock.
2117 */
2118
2119 static void __init BusLogic_InitializeHostStructure(struct BusLogic_HostAdapter
2120                                                     *HostAdapter, struct Scsi_Host *Host)
2121 {
2122         Host->max_id = HostAdapter->MaxTargetDevices;
2123         Host->max_lun = HostAdapter->MaxLogicalUnits;
2124         Host->max_channel = 0;
2125         Host->unique_id = HostAdapter->IO_Address;
2126         Host->this_id = HostAdapter->SCSI_ID;
2127         Host->can_queue = HostAdapter->DriverQueueDepth;
2128         Host->sg_tablesize = HostAdapter->DriverScatterGatherLimit;
2129         Host->unchecked_isa_dma = HostAdapter->BounceBuffersRequired;
2130         Host->cmd_per_lun = HostAdapter->UntaggedQueueDepth;
2131 }
2132
2133 /*
2134   BusLogic_SlaveConfigure will actually set the queue depth on individual
2135   scsi devices as they are permanently added to the device chain.  We
2136   shamelessly rip off the SelectQueueDepths code to make this work mostly
2137   like it used to.  Since we don't get called once at the end of the scan
2138   but instead get called for each device, we have to do things a bit
2139   differently.
2140 */
2141 static int BusLogic_SlaveConfigure(struct scsi_device *Device)
2142 {
2143         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Device->host->hostdata;
2144         int TargetID = Device->id;
2145         int QueueDepth = HostAdapter->QueueDepth[TargetID];
2146
2147         if (HostAdapter->TargetFlags[TargetID].TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2148                 if (QueueDepth == 0)
2149                         QueueDepth = BusLogic_MaxAutomaticTaggedQueueDepth;
2150                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2151                 scsi_adjust_queue_depth(Device, MSG_SIMPLE_TAG, QueueDepth);
2152         } else {
2153                 HostAdapter->TaggedQueuingPermitted &= ~(1 << TargetID);
2154                 QueueDepth = HostAdapter->UntaggedQueueDepth;
2155                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2156                 scsi_adjust_queue_depth(Device, 0, QueueDepth);
2157         }
2158         QueueDepth = 0;
2159         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2160                 if (HostAdapter->TargetFlags[TargetID].TargetExists) {
2161                         QueueDepth += HostAdapter->QueueDepth[TargetID];
2162                 }
2163         if (QueueDepth > HostAdapter->AllocatedCCBs)
2164                 BusLogic_CreateAdditionalCCBs(HostAdapter, QueueDepth - HostAdapter->AllocatedCCBs, false);
2165         return 0;
2166 }
2167
2168 /*
2169   BusLogic_DetectHostAdapter probes for BusLogic Host Adapters at the standard
2170   I/O Addresses where they may be located, initializing, registering, and
2171   reporting the configuration of each BusLogic Host Adapter it finds.  It
2172   returns the number of BusLogic Host Adapters successfully initialized and
2173   registered.
2174 */
2175
2176 static int __init BusLogic_init(void)
2177 {
2178         int BusLogicHostAdapterCount = 0, DriverOptionsIndex = 0, ProbeIndex;
2179         struct BusLogic_HostAdapter *PrototypeHostAdapter;
2180         int ret = 0;
2181
2182 #ifdef MODULE
2183         if (BusLogic)
2184                 BusLogic_Setup(BusLogic);
2185 #endif
2186
2187         if (BusLogic_ProbeOptions.NoProbe)
2188                 return -ENODEV;
2189         BusLogic_ProbeInfoList = (struct BusLogic_ProbeInfo *)
2190             kmalloc(BusLogic_MaxHostAdapters * sizeof(struct BusLogic_ProbeInfo), GFP_ATOMIC);
2191         if (BusLogic_ProbeInfoList == NULL) {
2192                 BusLogic_Error("BusLogic: Unable to allocate Probe Info List\n", NULL);
2193                 return -ENOMEM;
2194         }
2195         memset(BusLogic_ProbeInfoList, 0, BusLogic_MaxHostAdapters * sizeof(struct BusLogic_ProbeInfo));
2196         PrototypeHostAdapter = (struct BusLogic_HostAdapter *)
2197             kmalloc(sizeof(struct BusLogic_HostAdapter), GFP_ATOMIC);
2198         if (PrototypeHostAdapter == NULL) {
2199                 kfree(BusLogic_ProbeInfoList);
2200                 BusLogic_Error("BusLogic: Unable to allocate Prototype " "Host Adapter\n", NULL);
2201                 return -ENOMEM;
2202         }
2203         memset(PrototypeHostAdapter, 0, sizeof(struct BusLogic_HostAdapter));
2204 #ifdef MODULE
2205         if (BusLogic != NULL)
2206                 BusLogic_Setup(BusLogic);
2207 #endif
2208         BusLogic_InitializeProbeInfoList(PrototypeHostAdapter);
2209         for (ProbeIndex = 0; ProbeIndex < BusLogic_ProbeInfoCount; ProbeIndex++) {
2210                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[ProbeIndex];
2211                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
2212                 struct Scsi_Host *Host;
2213                 if (ProbeInfo->IO_Address == 0)
2214                         continue;
2215                 memset(HostAdapter, 0, sizeof(struct BusLogic_HostAdapter));
2216                 HostAdapter->HostAdapterType = ProbeInfo->HostAdapterType;
2217                 HostAdapter->HostAdapterBusType = ProbeInfo->HostAdapterBusType;
2218                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
2219                 HostAdapter->PCI_Address = ProbeInfo->PCI_Address;
2220                 HostAdapter->Bus = ProbeInfo->Bus;
2221                 HostAdapter->Device = ProbeInfo->Device;
2222                 HostAdapter->PCI_Device = ProbeInfo->PCI_Device;
2223                 HostAdapter->IRQ_Channel = ProbeInfo->IRQ_Channel;
2224                 HostAdapter->AddressCount = BusLogic_HostAdapterAddressCount[HostAdapter->HostAdapterType];
2225                 /*
2226                    Probe the Host Adapter.  If unsuccessful, abort further initialization.
2227                  */
2228                 if (!BusLogic_ProbeHostAdapter(HostAdapter))
2229                         continue;
2230                 /*
2231                    Hard Reset the Host Adapter.  If unsuccessful, abort further
2232                    initialization.
2233                  */
2234                 if (!BusLogic_HardwareResetHostAdapter(HostAdapter, true))
2235                         continue;
2236                 /*
2237                    Check the Host Adapter.  If unsuccessful, abort further initialization.
2238                  */
2239                 if (!BusLogic_CheckHostAdapter(HostAdapter))
2240                         continue;
2241                 /*
2242                    Initialize the Driver Options field if provided.
2243                  */
2244                 if (DriverOptionsIndex < BusLogic_DriverOptionsCount)
2245                         HostAdapter->DriverOptions = &BusLogic_DriverOptions[DriverOptionsIndex++];
2246                 /*
2247                    Announce the Driver Version and Date, Author's Name, Copyright Notice,
2248                    and Electronic Mail Address.
2249                  */
2250                 BusLogic_AnnounceDriver(HostAdapter);
2251                 /*
2252                    Register usage of the I/O Address range.  From this point onward, any
2253                    failure will be assumed to be due to a problem with the Host Adapter,
2254                    rather than due to having mistakenly identified this port as belonging
2255                    to a BusLogic Host Adapter.  The I/O Address range will not be
2256                    released, thereby preventing it from being incorrectly identified as
2257                    any other type of Host Adapter.
2258                  */
2259                 if (!request_region(HostAdapter->IO_Address, HostAdapter->AddressCount, "BusLogic"))
2260                         continue;
2261                 /*
2262                    Register the SCSI Host structure.
2263                  */
2264
2265                 Host = scsi_host_alloc(&Bus_Logic_template, sizeof(struct BusLogic_HostAdapter));
2266                 if (Host == NULL) {
2267                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2268                         continue;
2269                 }
2270                 HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
2271                 memcpy(HostAdapter, PrototypeHostAdapter, sizeof(struct BusLogic_HostAdapter));
2272                 HostAdapter->SCSI_Host = Host;
2273                 HostAdapter->HostNumber = Host->host_no;
2274                 /*
2275                    Add Host Adapter to the end of the list of registered BusLogic
2276                    Host Adapters.
2277                  */
2278                 list_add_tail(&HostAdapter->host_list, &BusLogic_host_list);
2279
2280                 /*
2281                    Read the Host Adapter Configuration, Configure the Host Adapter,
2282                    Acquire the System Resources necessary to use the Host Adapter, then
2283                    Create the Initial CCBs, Initialize the Host Adapter, and finally
2284                    perform Target Device Inquiry.
2285                  */
2286                 if (BusLogic_ReadHostAdapterConfiguration(HostAdapter) &&
2287                     BusLogic_ReportHostAdapterConfiguration(HostAdapter) &&
2288                     BusLogic_AcquireResources(HostAdapter) &&
2289                     BusLogic_CreateInitialCCBs(HostAdapter) &&
2290                     BusLogic_InitializeHostAdapter(HostAdapter) &&
2291                     BusLogic_TargetDeviceInquiry(HostAdapter)) {
2292                         /*
2293                            Initialization has been completed successfully.  Release and
2294                            re-register usage of the I/O Address range so that the Model
2295                            Name of the Host Adapter will appear, and initialize the SCSI
2296                            Host structure.
2297                          */
2298                         release_region(HostAdapter->IO_Address,
2299                                        HostAdapter->AddressCount);
2300                         if (!request_region(HostAdapter->IO_Address,
2301                                             HostAdapter->AddressCount,
2302                                             HostAdapter->FullModelName)) {
2303                                 printk(KERN_WARNING
2304                                         "BusLogic: Release and re-register of "
2305                                         "port 0x%04lx failed \n",
2306                                         (unsigned long)HostAdapter->IO_Address);
2307                                 BusLogic_DestroyCCBs(HostAdapter);
2308                                 BusLogic_ReleaseResources(HostAdapter);
2309                                 list_del(&HostAdapter->host_list);
2310                                 scsi_host_put(Host);
2311                                 ret = -ENOMEM;
2312                         } else {
2313                                 BusLogic_InitializeHostStructure(HostAdapter,
2314                                                                  Host);
2315                                 if (scsi_add_host(Host, HostAdapter->PCI_Device
2316                                                 ? &HostAdapter->PCI_Device->dev
2317                                                   : NULL)) {
2318                                         printk(KERN_WARNING
2319                                                "BusLogic: scsi_add_host()"
2320                                                "failed!\n");
2321                                         BusLogic_DestroyCCBs(HostAdapter);
2322                                         BusLogic_ReleaseResources(HostAdapter);
2323                                         list_del(&HostAdapter->host_list);
2324                                         scsi_host_put(Host);
2325                                         ret = -ENODEV;
2326                                 } else {
2327                                         scsi_scan_host(Host);
2328                                         BusLogicHostAdapterCount++;
2329                                 }
2330                         }
2331                 } else {
2332                         /*
2333                            An error occurred during Host Adapter Configuration Querying, Host
2334                            Adapter Configuration, Resource Acquisition, CCB Creation, Host
2335                            Adapter Initialization, or Target Device Inquiry, so remove Host
2336                            Adapter from the list of registered BusLogic Host Adapters, destroy
2337                            the CCBs, Release the System Resources, and Unregister the SCSI
2338                            Host.
2339                          */
2340                         BusLogic_DestroyCCBs(HostAdapter);
2341                         BusLogic_ReleaseResources(HostAdapter);
2342                         list_del(&HostAdapter->host_list);
2343                         scsi_host_put(Host);
2344                         ret = -ENODEV;
2345                 }
2346         }
2347         kfree(PrototypeHostAdapter);
2348         kfree(BusLogic_ProbeInfoList);
2349         BusLogic_ProbeInfoList = NULL;
2350         return ret;
2351 }
2352
2353
2354 /*
2355   BusLogic_ReleaseHostAdapter releases all resources previously acquired to
2356   support a specific Host Adapter, including the I/O Address range, and
2357   unregisters the BusLogic Host Adapter.
2358 */
2359
2360 static int __exit BusLogic_ReleaseHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
2361 {
2362         struct Scsi_Host *Host = HostAdapter->SCSI_Host;
2363
2364         scsi_remove_host(Host);
2365
2366         /*
2367            FlashPoint Host Adapters must first be released by the FlashPoint
2368            SCCB Manager.
2369          */
2370         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2371                 FlashPoint_ReleaseHostAdapter(HostAdapter->CardHandle);
2372         /*
2373            Destroy the CCBs and release any system resources acquired to
2374            support Host Adapter.
2375          */
2376         BusLogic_DestroyCCBs(HostAdapter);
2377         BusLogic_ReleaseResources(HostAdapter);
2378         /*
2379            Release usage of the I/O Address range.
2380          */
2381         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2382         /*
2383            Remove Host Adapter from the list of registered BusLogic Host Adapters.
2384          */
2385         list_del(&HostAdapter->host_list);
2386
2387         scsi_host_put(Host);
2388         return 0;
2389 }
2390
2391
2392 /*
2393   BusLogic_QueueCompletedCCB queues CCB for completion processing.
2394 */
2395
2396 static void BusLogic_QueueCompletedCCB(struct BusLogic_CCB *CCB)
2397 {
2398         struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
2399         CCB->Status = BusLogic_CCB_Completed;
2400         CCB->Next = NULL;
2401         if (HostAdapter->FirstCompletedCCB == NULL) {
2402                 HostAdapter->FirstCompletedCCB = CCB;
2403                 HostAdapter->LastCompletedCCB = CCB;
2404         } else {
2405                 HostAdapter->LastCompletedCCB->Next = CCB;
2406                 HostAdapter->LastCompletedCCB = CCB;
2407         }
2408         HostAdapter->ActiveCommands[CCB->TargetID]--;
2409 }
2410
2411
2412 /*
2413   BusLogic_ComputeResultCode computes a SCSI Subsystem Result Code from
2414   the Host Adapter Status and Target Device Status.
2415 */
2416
2417 static int BusLogic_ComputeResultCode(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_HostAdapterStatus HostAdapterStatus, enum BusLogic_TargetDeviceStatus TargetDeviceStatus)
2418 {
2419         int HostStatus;
2420         switch (HostAdapterStatus) {
2421         case BusLogic_CommandCompletedNormally:
2422         case BusLogic_LinkedCommandCompleted:
2423         case BusLogic_LinkedCommandCompletedWithFlag:
2424                 HostStatus = DID_OK;
2425                 break;
2426         case BusLogic_SCSISelectionTimeout:
2427                 HostStatus = DID_TIME_OUT;
2428                 break;
2429         case BusLogic_InvalidOutgoingMailboxActionCode:
2430         case BusLogic_InvalidCommandOperationCode:
2431         case BusLogic_InvalidCommandParameter:
2432                 BusLogic_Warning("BusLogic Driver Protocol Error 0x%02X\n", HostAdapter, HostAdapterStatus);
2433         case BusLogic_DataUnderRun:
2434         case BusLogic_DataOverRun:
2435         case BusLogic_UnexpectedBusFree:
2436         case BusLogic_LinkedCCBhasInvalidLUN:
2437         case BusLogic_AutoRequestSenseFailed:
2438         case BusLogic_TaggedQueuingMessageRejected:
2439         case BusLogic_UnsupportedMessageReceived:
2440         case BusLogic_HostAdapterHardwareFailed:
2441         case BusLogic_TargetDeviceReconnectedImproperly:
2442         case BusLogic_AbortQueueGenerated:
2443         case BusLogic_HostAdapterSoftwareError:
2444         case BusLogic_HostAdapterHardwareTimeoutError:
2445         case BusLogic_SCSIParityErrorDetected:
2446                 HostStatus = DID_ERROR;
2447                 break;
2448         case BusLogic_InvalidBusPhaseRequested:
2449         case BusLogic_TargetFailedResponseToATN:
2450         case BusLogic_HostAdapterAssertedRST:
2451         case BusLogic_OtherDeviceAssertedRST:
2452         case BusLogic_HostAdapterAssertedBusDeviceReset:
2453                 HostStatus = DID_RESET;
2454                 break;
2455         default:
2456                 BusLogic_Warning("Unknown Host Adapter Status 0x%02X\n", HostAdapter, HostAdapterStatus);
2457                 HostStatus = DID_ERROR;
2458                 break;
2459         }
2460         return (HostStatus << 16) | TargetDeviceStatus;
2461 }
2462
2463
2464 /*
2465   BusLogic_ScanIncomingMailboxes scans the Incoming Mailboxes saving any
2466   Incoming Mailbox entries for completion processing.
2467 */
2468
2469 static void BusLogic_ScanIncomingMailboxes(struct BusLogic_HostAdapter *HostAdapter)
2470 {
2471         /*
2472            Scan through the Incoming Mailboxes in Strict Round Robin fashion, saving
2473            any completed CCBs for further processing.  It is essential that for each
2474            CCB and SCSI Command issued, command completion processing is performed
2475            exactly once.  Therefore, only Incoming Mailboxes with completion code
2476            Command Completed Without Error, Command Completed With Error, or Command
2477            Aborted At Host Request are saved for completion processing.  When an
2478            Incoming Mailbox has a completion code of Aborted Command Not Found, the
2479            CCB had already completed or been aborted before the current Abort request
2480            was processed, and so completion processing has already occurred and no
2481            further action should be taken.
2482          */
2483         struct BusLogic_IncomingMailbox *NextIncomingMailbox = HostAdapter->NextIncomingMailbox;
2484         enum BusLogic_CompletionCode CompletionCode;
2485         while ((CompletionCode = NextIncomingMailbox->CompletionCode) != BusLogic_IncomingMailboxFree) {
2486                 /*
2487                    We are only allowed to do this because we limit our architectures we
2488                    run on to machines where bus_to_virt() actually works.  There *needs*
2489                    to be a dma_addr_to_virt() in the new PCI DMA mapping interface to
2490                    replace bus_to_virt() or else this code is going to become very
2491                    innefficient.
2492                  */
2493                 struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) Bus_to_Virtual(NextIncomingMailbox->CCB);
2494                 if (CompletionCode != BusLogic_AbortedCommandNotFound) {
2495                         if (CCB->Status == BusLogic_CCB_Active || CCB->Status == BusLogic_CCB_Reset) {
2496                                 /*
2497                                    Save the Completion Code for this CCB and queue the CCB
2498                                    for completion processing.
2499                                  */
2500                                 CCB->CompletionCode = CompletionCode;
2501                                 BusLogic_QueueCompletedCCB(CCB);
2502                         } else {
2503                                 /*
2504                                    If a CCB ever appears in an Incoming Mailbox and is not marked
2505                                    as status Active or Reset, then there is most likely a bug in
2506                                    the Host Adapter firmware.
2507                                  */
2508                                 BusLogic_Warning("Illegal CCB #%ld status %d in " "Incoming Mailbox\n", HostAdapter, CCB->SerialNumber, CCB->Status);
2509                         }
2510                 }
2511                 NextIncomingMailbox->CompletionCode = BusLogic_IncomingMailboxFree;
2512                 if (++NextIncomingMailbox > HostAdapter->LastIncomingMailbox)
2513                         NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
2514         }
2515         HostAdapter->NextIncomingMailbox = NextIncomingMailbox;
2516 }
2517
2518
2519 /*
2520   BusLogic_ProcessCompletedCCBs iterates over the completed CCBs for Host
2521   Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2522   calling the SCSI Subsystem Completion Routines.  The Host Adapter's Lock
2523   should already have been acquired by the caller.
2524 */
2525
2526 static void BusLogic_ProcessCompletedCCBs(struct BusLogic_HostAdapter *HostAdapter)
2527 {
2528         if (HostAdapter->ProcessCompletedCCBsActive)
2529                 return;
2530         HostAdapter->ProcessCompletedCCBsActive = true;
2531         while (HostAdapter->FirstCompletedCCB != NULL) {
2532                 struct BusLogic_CCB *CCB = HostAdapter->FirstCompletedCCB;
2533                 struct scsi_cmnd *Command = CCB->Command;
2534                 HostAdapter->FirstCompletedCCB = CCB->Next;
2535                 if (HostAdapter->FirstCompletedCCB == NULL)
2536                         HostAdapter->LastCompletedCCB = NULL;
2537                 /*
2538                    Process the Completed CCB.
2539                  */
2540                 if (CCB->Opcode == BusLogic_BusDeviceReset) {
2541                         int TargetID = CCB->TargetID;
2542                         BusLogic_Warning("Bus Device Reset CCB #%ld to Target " "%d Completed\n", HostAdapter, CCB->SerialNumber, TargetID);
2543                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].BusDeviceResetsCompleted);
2544                         HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
2545                         HostAdapter->CommandsSinceReset[TargetID] = 0;
2546                         HostAdapter->LastResetCompleted[TargetID] = jiffies;
2547                         /*
2548                            Place CCB back on the Host Adapter's free list.
2549                          */
2550                         BusLogic_DeallocateCCB(CCB);
2551 #if 0                           /* this needs to be redone different for new EH */
2552                         /*
2553                            Bus Device Reset CCBs have the Command field non-NULL only when a
2554                            Bus Device Reset was requested for a Command that did not have a
2555                            currently active CCB in the Host Adapter (i.e., a Synchronous
2556                            Bus Device Reset), and hence would not have its Completion Routine
2557                            called otherwise.
2558                          */
2559                         while (Command != NULL) {
2560                                 struct scsi_cmnd *NextCommand = Command->reset_chain;
2561                                 Command->reset_chain = NULL;
2562                                 Command->result = DID_RESET << 16;
2563                                 Command->scsi_done(Command);
2564                                 Command = NextCommand;
2565                         }
2566 #endif
2567                         /*
2568                            Iterate over the CCBs for this Host Adapter performing completion
2569                            processing for any CCBs marked as Reset for this Target.
2570                          */
2571                         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
2572                                 if (CCB->Status == BusLogic_CCB_Reset && CCB->TargetID == TargetID) {
2573                                         Command = CCB->Command;
2574                                         BusLogic_DeallocateCCB(CCB);
2575                                         HostAdapter->ActiveCommands[TargetID]--;
2576                                         Command->result = DID_RESET << 16;
2577                                         Command->scsi_done(Command);
2578                                 }
2579                         HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
2580                 } else {
2581                         /*
2582                            Translate the Completion Code, Host Adapter Status, and Target
2583                            Device Status into a SCSI Subsystem Result Code.
2584                          */
2585                         switch (CCB->CompletionCode) {
2586                         case BusLogic_IncomingMailboxFree:
2587                         case BusLogic_AbortedCommandNotFound:
2588                         case BusLogic_InvalidCCB:
2589                                 BusLogic_Warning("CCB #%ld to Target %d Impossible State\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2590                                 break;
2591                         case BusLogic_CommandCompletedWithoutError:
2592                                 HostAdapter->TargetStatistics[CCB->TargetID]
2593                                     .CommandsCompleted++;
2594                                 HostAdapter->TargetFlags[CCB->TargetID]
2595                                     .CommandSuccessfulFlag = true;
2596                                 Command->result = DID_OK << 16;
2597                                 break;
2598                         case BusLogic_CommandAbortedAtHostRequest:
2599                                 BusLogic_Warning("CCB #%ld to Target %d Aborted\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2600                                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[CCB->TargetID]
2601                                                                .CommandAbortsCompleted);
2602                                 Command->result = DID_ABORT << 16;
2603                                 break;
2604                         case BusLogic_CommandCompletedWithError:
2605                                 Command->result = BusLogic_ComputeResultCode(HostAdapter, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2606                                 if (CCB->HostAdapterStatus != BusLogic_SCSISelectionTimeout) {
2607                                         HostAdapter->TargetStatistics[CCB->TargetID]
2608                                             .CommandsCompleted++;
2609                                         if (BusLogic_GlobalOptions.TraceErrors) {
2610                                                 int i;
2611                                                 BusLogic_Notice("CCB #%ld Target %d: Result %X Host "
2612                                                                 "Adapter Status %02X " "Target Status %02X\n", HostAdapter, CCB->SerialNumber, CCB->TargetID, Command->result, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2613                                                 BusLogic_Notice("CDB   ", HostAdapter);
2614                                                 for (i = 0; i < CCB->CDB_Length; i++)
2615                                                         BusLogic_Notice(" %02X", HostAdapter, CCB->CDB[i]);
2616                                                 BusLogic_Notice("\n", HostAdapter);
2617                                                 BusLogic_Notice("Sense ", HostAdapter);
2618                                                 for (i = 0; i < CCB->SenseDataLength; i++)
2619                                                         BusLogic_Notice(" %02X", HostAdapter, Command->sense_buffer[i]);
2620                                                 BusLogic_Notice("\n", HostAdapter);
2621                                         }
2622                                 }
2623                                 break;
2624                         }
2625                         /*
2626                            When an INQUIRY command completes normally, save the
2627                            CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2628                            Wide Data Transfers Supported) bits.
2629                          */
2630                         if (CCB->CDB[0] == INQUIRY && CCB->CDB[1] == 0 && CCB->HostAdapterStatus == BusLogic_CommandCompletedNormally) {
2631                                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[CCB->TargetID];
2632                                 struct SCSI_Inquiry *InquiryResult = (struct SCSI_Inquiry *) Command->request_buffer;
2633                                 TargetFlags->TargetExists = true;
2634                                 TargetFlags->TaggedQueuingSupported = InquiryResult->CmdQue;
2635                                 TargetFlags->WideTransfersSupported = InquiryResult->WBus16;
2636                         }
2637                         /*
2638                            Place CCB back on the Host Adapter's free list.
2639                          */
2640                         BusLogic_DeallocateCCB(CCB);
2641                         /*
2642                            Call the SCSI Command Completion Routine.
2643                          */
2644                         Command->scsi_done(Command);
2645                 }
2646         }
2647         HostAdapter->ProcessCompletedCCBsActive = false;
2648 }
2649
2650
2651 /*
2652   BusLogic_InterruptHandler handles hardware interrupts from BusLogic Host
2653   Adapters.
2654 */
2655
2656 static irqreturn_t BusLogic_InterruptHandler(int IRQ_Channel, void *DeviceIdentifier, struct pt_regs *InterruptRegisters)
2657 {
2658         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) DeviceIdentifier;
2659         unsigned long ProcessorFlags;
2660         /*
2661            Acquire exclusive access to Host Adapter.
2662          */
2663         spin_lock_irqsave(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2664         /*
2665            Handle Interrupts appropriately for each Host Adapter type.
2666          */
2667         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2668                 union BusLogic_InterruptRegister InterruptRegister;
2669                 /*
2670                    Read the Host Adapter Interrupt Register.
2671                  */
2672                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
2673                 if (InterruptRegister.ir.InterruptValid) {
2674                         /*
2675                            Acknowledge the interrupt and reset the Host Adapter
2676                            Interrupt Register.
2677                          */
2678                         BusLogic_InterruptReset(HostAdapter);
2679                         /*
2680                            Process valid External SCSI Bus Reset and Incoming Mailbox
2681                            Loaded Interrupts.  Command Complete Interrupts are noted,
2682                            and Outgoing Mailbox Available Interrupts are ignored, as
2683                            they are never enabled.
2684                          */
2685                         if (InterruptRegister.ir.ExternalBusReset)
2686                                 HostAdapter->HostAdapterExternalReset = true;
2687                         else if (InterruptRegister.ir.IncomingMailboxLoaded)
2688                                 BusLogic_ScanIncomingMailboxes(HostAdapter);
2689                         else if (InterruptRegister.ir.CommandComplete)
2690                                 HostAdapter->HostAdapterCommandCompleted = true;
2691                 }
2692         } else {
2693                 /*
2694                    Check if there is a pending interrupt for this Host Adapter.
2695                  */
2696                 if (FlashPoint_InterruptPending(HostAdapter->CardHandle))
2697                         switch (FlashPoint_HandleInterrupt(HostAdapter->CardHandle)) {
2698                         case FlashPoint_NormalInterrupt:
2699                                 break;
2700                         case FlashPoint_ExternalBusReset:
2701                                 HostAdapter->HostAdapterExternalReset = true;
2702                                 break;
2703                         case FlashPoint_InternalError:
2704                                 BusLogic_Warning("Internal FlashPoint Error detected" " - Resetting Host Adapter\n", HostAdapter);
2705                                 HostAdapter->HostAdapterInternalError = true;
2706                                 break;
2707                         }
2708         }
2709         /*
2710            Process any completed CCBs.
2711          */
2712         if (HostAdapter->FirstCompletedCCB != NULL)
2713                 BusLogic_ProcessCompletedCCBs(HostAdapter);
2714         /*
2715            Reset the Host Adapter if requested.
2716          */
2717         if (HostAdapter->HostAdapterExternalReset) {
2718                 BusLogic_Warning("Resetting %s due to External SCSI Bus Reset\n", HostAdapter, HostAdapter->FullModelName);
2719                 BusLogic_IncrementErrorCounter(&HostAdapter->ExternalHostAdapterResets);
2720                 BusLogic_ResetHostAdapter(HostAdapter, false);
2721                 HostAdapter->HostAdapterExternalReset = false;
2722         } else if (HostAdapter->HostAdapterInternalError) {
2723                 BusLogic_Warning("Resetting %s due to Host Adapter Internal Error\n", HostAdapter, HostAdapter->FullModelName);
2724                 BusLogic_IncrementErrorCounter(&HostAdapter->HostAdapterInternalErrors);
2725                 BusLogic_ResetHostAdapter(HostAdapter, true);
2726                 HostAdapter->HostAdapterInternalError = false;
2727         }
2728         /*
2729            Release exclusive access to Host Adapter.
2730          */
2731         spin_unlock_irqrestore(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2732         return IRQ_HANDLED;
2733 }
2734
2735
2736 /*
2737   BusLogic_WriteOutgoingMailbox places CCB and Action Code into an Outgoing
2738   Mailbox for execution by Host Adapter.  The Host Adapter's Lock should
2739   already have been acquired by the caller.
2740 */
2741
2742 static boolean BusLogic_WriteOutgoingMailbox(struct BusLogic_HostAdapter
2743                                              *HostAdapter, enum BusLogic_ActionCode ActionCode, struct BusLogic_CCB *CCB)
2744 {
2745         struct BusLogic_OutgoingMailbox *NextOutgoingMailbox;
2746         NextOutgoingMailbox = HostAdapter->NextOutgoingMailbox;
2747         if (NextOutgoingMailbox->ActionCode == BusLogic_OutgoingMailboxFree) {
2748                 CCB->Status = BusLogic_CCB_Active;
2749                 /*
2750                    The CCB field must be written before the Action Code field since
2751                    the Host Adapter is operating asynchronously and the locking code
2752                    does not protect against simultaneous access by the Host Adapter.
2753                  */
2754                 NextOutgoingMailbox->CCB = CCB->DMA_Handle;
2755                 NextOutgoingMailbox->ActionCode = ActionCode;
2756                 BusLogic_StartMailboxCommand(HostAdapter);
2757                 if (++NextOutgoingMailbox > HostAdapter->LastOutgoingMailbox)
2758                         NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
2759                 HostAdapter->NextOutgoingMailbox = NextOutgoingMailbox;
2760                 if (ActionCode == BusLogic_MailboxStartCommand) {
2761                         HostAdapter->ActiveCommands[CCB->TargetID]++;
2762                         if (CCB->Opcode != BusLogic_BusDeviceReset)
2763                                 HostAdapter->TargetStatistics[CCB->TargetID].CommandsAttempted++;
2764                 }
2765                 return true;
2766         }
2767         return false;
2768 }
2769
2770 /* Error Handling (EH) support */
2771
2772 static int BusLogic_host_reset(struct scsi_cmnd * SCpnt)
2773 {
2774         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) SCpnt->device->host->hostdata;
2775
2776         unsigned int id = SCpnt->device->id;
2777         struct BusLogic_TargetStatistics *stats = &HostAdapter->TargetStatistics[id];
2778         int rc;
2779
2780         spin_lock_irq(SCpnt->device->host->host_lock);
2781
2782         BusLogic_IncrementErrorCounter(&stats->HostAdapterResetsRequested);
2783
2784         rc = BusLogic_ResetHostAdapter(HostAdapter, false);
2785         spin_unlock_irq(SCpnt->device->host->host_lock);
2786         return rc;
2787 }
2788
2789 /*
2790   BusLogic_QueueCommand creates a CCB for Command and places it into an
2791   Outgoing Mailbox for execution by the associated Host Adapter.
2792 */
2793
2794 static int BusLogic_QueueCommand(struct scsi_cmnd *Command, void (*CompletionRoutine) (struct scsi_cmnd *))
2795 {
2796         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
2797         struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[Command->device->id];
2798         struct BusLogic_TargetStatistics *TargetStatistics = HostAdapter->TargetStatistics;
2799         unsigned char *CDB = Command->cmnd;
2800         int CDB_Length = Command->cmd_len;
2801         int TargetID = Command->device->id;
2802         int LogicalUnit = Command->device->lun;
2803         void *BufferPointer = Command->request_buffer;
2804         int BufferLength = Command->request_bufflen;
2805         int SegmentCount = Command->use_sg;
2806         struct BusLogic_CCB *CCB;
2807         /*
2808            SCSI REQUEST_SENSE commands will be executed automatically by the Host
2809            Adapter for any errors, so they should not be executed explicitly unless
2810            the Sense Data is zero indicating that no error occurred.
2811          */
2812         if (CDB[0] == REQUEST_SENSE && Command->sense_buffer[0] != 0) {
2813                 Command->result = DID_OK << 16;
2814                 CompletionRoutine(Command);
2815                 return 0;
2816         }
2817         /*
2818            Allocate a CCB from the Host Adapter's free list.  In the unlikely event
2819            that there are none available and memory allocation fails, wait 1 second
2820            and try again.  If that fails, the Host Adapter is probably hung so signal
2821            an error as a Host Adapter Hard Reset should be initiated soon.
2822          */
2823         CCB = BusLogic_AllocateCCB(HostAdapter);
2824         if (CCB == NULL) {
2825                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2826                 BusLogic_Delay(1);
2827                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2828                 CCB = BusLogic_AllocateCCB(HostAdapter);
2829                 if (CCB == NULL) {
2830                         Command->result = DID_ERROR << 16;
2831                         CompletionRoutine(Command);
2832                         return 0;
2833                 }
2834         }
2835         /*
2836            Initialize the fields in the BusLogic Command Control Block (CCB).
2837          */
2838         if (SegmentCount == 0 && BufferLength != 0) {
2839                 CCB->Opcode = BusLogic_InitiatorCCB;
2840                 CCB->DataLength = BufferLength;
2841                 CCB->DataPointer = pci_map_single(HostAdapter->PCI_Device,
2842                                 BufferPointer, BufferLength,
2843                                 Command->sc_data_direction);
2844         } else if (SegmentCount != 0) {
2845                 struct scatterlist *ScatterList = (struct scatterlist *) BufferPointer;
2846                 int Segment, Count;
2847
2848                 Count = pci_map_sg(HostAdapter->PCI_Device, ScatterList, SegmentCount,
2849                                 Command->sc_data_direction);
2850                 CCB->Opcode = BusLogic_InitiatorCCB_ScatterGather;
2851                 CCB->DataLength = Count * sizeof(struct BusLogic_ScatterGatherSegment);
2852                 if (BusLogic_MultiMasterHostAdapterP(HostAdapter))
2853                         CCB->DataPointer = (unsigned int) CCB->DMA_Handle + ((unsigned long) &CCB->ScatterGatherList - (unsigned long) CCB);
2854                 else
2855                         CCB->DataPointer = Virtual_to_32Bit_Virtual(CCB->ScatterGatherList);
2856                 for (Segment = 0; Segment < Count; Segment++) {
2857                         CCB->ScatterGatherList[Segment].SegmentByteCount = sg_dma_len(ScatterList + Segment);
2858                         CCB->ScatterGatherList[Segment].SegmentDataPointer = sg_dma_address(ScatterList + Segment);
2859                 }
2860         } else {
2861                 CCB->Opcode = BusLogic_InitiatorCCB;
2862                 CCB->DataLength = BufferLength;
2863                 CCB->DataPointer = 0;
2864         }
2865         switch (CDB[0]) {
2866         case READ_6:
2867         case READ_10:
2868                 CCB->DataDirection = BusLogic_DataInLengthChecked;
2869                 TargetStatistics[TargetID].ReadCommands++;
2870                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesRead, BufferLength);
2871                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].ReadCommandSizeBuckets, BufferLength);
2872                 break;
2873         case WRITE_6:
2874         case WRITE_10:
2875                 CCB->DataDirection = BusLogic_DataOutLengthChecked;
2876                 TargetStatistics[TargetID].WriteCommands++;
2877                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesWritten, BufferLength);
2878                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].WriteCommandSizeBuckets, BufferLength);
2879                 break;
2880         default:
2881                 CCB->DataDirection = BusLogic_UncheckedDataTransfer;
2882                 break;
2883         }
2884         CCB->CDB_Length = CDB_Length;
2885         CCB->HostAdapterStatus = 0;
2886         CCB->TargetDeviceStatus = 0;
2887         CCB->TargetID = TargetID;
2888         CCB->LogicalUnit = LogicalUnit;
2889         CCB->TagEnable = false;
2890         CCB->LegacyTagEnable = false;
2891         /*
2892            BusLogic recommends that after a Reset the first couple of commands that
2893            are sent to a Target Device be sent in a non Tagged Queue fashion so that
2894            the Host Adapter and Target Device can establish Synchronous and Wide
2895            Transfer before Queue Tag messages can interfere with the Synchronous and
2896            Wide Negotiation messages.  By waiting to enable Tagged Queuing until after
2897            the first BusLogic_MaxTaggedQueueDepth commands have been queued, it is
2898            assured that after a Reset any pending commands are requeued before Tagged
2899            Queuing is enabled and that the Tagged Queuing message will not occur while
2900            the partition table is being printed.  In addition, some devices do not
2901            properly handle the transition from non-tagged to tagged commands, so it is
2902            necessary to wait until there are no pending commands for a target device
2903            before queuing tagged commands.
2904          */
2905         if (HostAdapter->CommandsSinceReset[TargetID]++ >=
2906             BusLogic_MaxTaggedQueueDepth && !TargetFlags->TaggedQueuingActive && HostAdapter->ActiveCommands[TargetID] == 0 && TargetFlags->TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2907                 TargetFlags->TaggedQueuingActive = true;
2908                 BusLogic_Notice("Tagged Queuing now active for Target %d\n", HostAdapter, TargetID);
2909         }
2910         if (TargetFlags->TaggedQueuingActive) {
2911                 enum BusLogic_QueueTag QueueTag = BusLogic_SimpleQueueTag;
2912                 /*
2913                    When using Tagged Queuing with Simple Queue Tags, it appears that disk
2914                    drive controllers do not guarantee that a queued command will not
2915                    remain in a disconnected state indefinitely if commands that read or
2916                    write nearer the head position continue to arrive without interruption.
2917                    Therefore, for each Target Device this driver keeps track of the last
2918                    time either the queue was empty or an Ordered Queue Tag was issued.  If
2919                    more than 4 seconds (one fifth of the 20 second disk timeout) have
2920                    elapsed since this last sequence point, this command will be issued
2921                    with an Ordered Queue Tag rather than a Simple Queue Tag, which forces
2922                    the Target Device to complete all previously queued commands before
2923                    this command may be executed.
2924                  */
2925                 if (HostAdapter->ActiveCommands[TargetID] == 0)
2926                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2927                 else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) {
2928                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2929                         QueueTag = BusLogic_OrderedQueueTag;
2930                 }
2931                 if (HostAdapter->ExtendedLUNSupport) {
2932                         CCB->TagEnable = true;
2933                         CCB->QueueTag = QueueTag;
2934                 } else {
2935                         CCB->LegacyTagEnable = true;
2936                         CCB->LegacyQueueTag = QueueTag;
2937                 }
2938         }
2939         memcpy(CCB->CDB, CDB, CDB_Length);
2940         CCB->SenseDataLength = sizeof(Command->sense_buffer);
2941         CCB->SenseDataPointer = pci_map_single(HostAdapter->PCI_Device, Command->sense_buffer, CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
2942         CCB->Command = Command;
2943         Command->scsi_done = CompletionRoutine;
2944         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2945                 /*
2946                    Place the CCB in an Outgoing Mailbox.  The higher levels of the SCSI
2947                    Subsystem should not attempt to queue more commands than can be placed
2948                    in Outgoing Mailboxes, so there should always be one free.  In the
2949                    unlikely event that there are none available, wait 1 second and try
2950                    again.  If that fails, the Host Adapter is probably hung so signal an
2951                    error as a Host Adapter Hard Reset should be initiated soon.
2952                  */
2953                 if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2954                         spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2955                         BusLogic_Warning("Unable to write Outgoing Mailbox - " "Pausing for 1 second\n", HostAdapter);
2956                         BusLogic_Delay(1);
2957                         spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2958                         if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2959                                 BusLogic_Warning("Still unable to write Outgoing Mailbox - " "Host Adapter Dead?\n", HostAdapter);
2960                                 BusLogic_DeallocateCCB(CCB);
2961                                 Command->result = DID_ERROR << 16;
2962                                 Command->scsi_done(Command);
2963                         }
2964                 }
2965         } else {
2966                 /*
2967                    Call the FlashPoint SCCB Manager to start execution of the CCB.
2968                  */
2969                 CCB->Status = BusLogic_CCB_Active;
2970                 HostAdapter->ActiveCommands[TargetID]++;
2971                 TargetStatistics[TargetID].CommandsAttempted++;
2972                 FlashPoint_StartCCB(HostAdapter->CardHandle, CCB);
2973                 /*
2974                    The Command may have already completed and BusLogic_QueueCompletedCCB
2975                    been called, or it may still be pending.
2976                  */
2977                 if (CCB->Status == BusLogic_CCB_Completed)
2978                         BusLogic_ProcessCompletedCCBs(HostAdapter);
2979         }
2980         return 0;
2981 }
2982
2983
2984 #if 0
2985 /*
2986   BusLogic_AbortCommand aborts Command if possible.
2987 */
2988
2989 static int BusLogic_AbortCommand(struct scsi_cmnd *Command)
2990 {
2991         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
2992
2993         int TargetID = Command->device->id;
2994         struct BusLogic_CCB *CCB;
2995         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsRequested);
2996         /*
2997            Attempt to find an Active CCB for this Command.  If no Active CCB for this
2998            Command is found, then no Abort is necessary.
2999          */
3000         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3001                 if (CCB->Command == Command)
3002                         break;
3003         if (CCB == NULL) {
3004                 BusLogic_Warning("Unable to Abort Command to Target %d - " "No CCB Found\n", HostAdapter, TargetID);
3005                 return SUCCESS;
3006         } else if (CCB->Status == BusLogic_CCB_Completed) {
3007                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Completed\n", HostAdapter, TargetID);
3008                 return SUCCESS;
3009         } else if (CCB->Status == BusLogic_CCB_Reset) {
3010                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Reset\n", HostAdapter, TargetID);
3011                 return SUCCESS;
3012         }
3013         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
3014                 /*
3015                    Attempt to Abort this CCB.  MultiMaster Firmware versions prior to 5.xx
3016                    do not generate Abort Tag messages, but only generate the non-tagged
3017                    Abort message.  Since non-tagged commands are not sent by the Host
3018                    Adapter until the queue of outstanding tagged commands has completed,
3019                    and the Abort message is treated as a non-tagged command, it is
3020                    effectively impossible to abort commands when Tagged Queuing is active.
3021                    Firmware version 5.xx does generate Abort Tag messages, so it is
3022                    possible to abort commands when Tagged Queuing is active.
3023                  */
3024                 if (HostAdapter->TargetFlags[TargetID].TaggedQueuingActive && HostAdapter->FirmwareVersion[0] < '5') {
3025                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "Abort Tag Not Supported\n", HostAdapter, CCB->SerialNumber, TargetID);
3026                         return FAILURE;
3027                 } else if (BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxAbortCommand, CCB)) {
3028                         BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3029                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3030                         return SUCCESS;
3031                 } else {
3032                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "No Outgoing Mailboxes\n", HostAdapter, CCB->SerialNumber, TargetID);
3033                         return FAILURE;
3034                 }
3035         } else {
3036                 /*
3037                    Call the FlashPoint SCCB Manager to abort execution of the CCB.
3038                  */
3039                 BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3040                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3041                 FlashPoint_AbortCCB(HostAdapter->CardHandle, CCB);
3042                 /*
3043                    The Abort may have already been completed and
3044                    BusLogic_QueueCompletedCCB been called, or it
3045                    may still be pending.
3046                  */
3047                 if (CCB->Status == BusLogic_CCB_Completed) {
3048                         BusLogic_ProcessCompletedCCBs(HostAdapter);
3049                 }
3050                 return SUCCESS;
3051         }
3052         return SUCCESS;
3053 }
3054
3055 #endif
3056 /*
3057   BusLogic_ResetHostAdapter resets Host Adapter if possible, marking all
3058   currently executing SCSI Commands as having been Reset.
3059 */
3060
3061 static int BusLogic_ResetHostAdapter(struct BusLogic_HostAdapter *HostAdapter, boolean HardReset)
3062 {
3063         struct BusLogic_CCB *CCB;
3064         int TargetID;
3065
3066         /*
3067          * Attempt to Reset and Reinitialize the Host Adapter.
3068          */
3069
3070         if (!(BusLogic_HardwareResetHostAdapter(HostAdapter, HardReset) && BusLogic_InitializeHostAdapter(HostAdapter))) {
3071                 BusLogic_Error("Resetting %s Failed\n", HostAdapter, HostAdapter->FullModelName);
3072                 return FAILURE;
3073         }
3074
3075         /*
3076          * Deallocate all currently executing CCBs.
3077          */
3078
3079         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3080                 if (CCB->Status == BusLogic_CCB_Active)
3081                         BusLogic_DeallocateCCB(CCB);
3082         /*
3083          * Wait a few seconds between the Host Adapter Hard Reset which
3084          * initiates a SCSI Bus Reset and issuing any SCSI Commands.  Some
3085          * SCSI devices get confused if they receive SCSI Commands too soon
3086          * after a SCSI Bus Reset.
3087          */
3088
3089         if (HardReset) {
3090                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
3091                 BusLogic_Delay(HostAdapter->BusSettleTime);
3092                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
3093         }
3094
3095         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3096                 HostAdapter->LastResetAttempted[TargetID] = jiffies;
3097                 HostAdapter->LastResetCompleted[TargetID] = jiffies;
3098         }
3099         return SUCCESS;
3100 }
3101
3102 /*
3103   BusLogic_BIOSDiskParameters returns the Heads/Sectors/Cylinders BIOS Disk
3104   Parameters for Disk.  The default disk geometry is 64 heads, 32 sectors, and
3105   the appropriate number of cylinders so as not to exceed drive capacity.  In
3106   order for disks equal to or larger than 1 GB to be addressable by the BIOS
3107   without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3108   may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3109   series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3110   series MultiMaster Host Adapters.  With Extended Translation enabled, drives
3111   between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3112   heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3113   geometry of 255 heads and 63 sectors.  However, if the BIOS detects that the
3114   Extended Translation setting does not match the geometry in the partition
3115   table, then the translation inferred from the partition table will be used by
3116   the BIOS, and a warning may be displayed.
3117 */
3118
3119 static int BusLogic_BIOSDiskParameters(struct scsi_device *sdev, struct block_device *Device, sector_t capacity, int *Parameters)
3120 {
3121         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) sdev->host->hostdata;
3122         struct BIOS_DiskParameters *DiskParameters = (struct BIOS_DiskParameters *) Parameters;
3123         unsigned char *buf;
3124         if (HostAdapter->ExtendedTranslationEnabled && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */ ) {
3125                 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */ ) {
3126                         DiskParameters->Heads = 255;
3127                         DiskParameters->Sectors = 63;
3128                 } else {
3129                         DiskParameters->Heads = 128;
3130                         DiskParameters->Sectors = 32;
3131                 }
3132         } else {
3133                 DiskParameters->Heads = 64;
3134                 DiskParameters->Sectors = 32;
3135         }
3136         DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3137         buf = scsi_bios_ptable(Device);
3138         if (buf == NULL)
3139                 return 0;
3140         /*
3141            If the boot sector partition table flag is valid, search for a partition
3142            table entry whose end_head matches one of the standard BusLogic geometry
3143            translations (64/32, 128/32, or 255/63).
3144          */
3145         if (*(unsigned short *) (buf + 64) == 0xAA55) {
3146                 struct partition *FirstPartitionEntry = (struct partition *) buf;
3147                 struct partition *PartitionEntry = FirstPartitionEntry;
3148                 int SavedCylinders = DiskParameters->Cylinders, PartitionNumber;
3149                 unsigned char PartitionEntryEndHead = 0, PartitionEntryEndSector = 0;
3150                 for (PartitionNumber = 0; PartitionNumber < 4; PartitionNumber++) {
3151                         PartitionEntryEndHead = PartitionEntry->end_head;
3152                         PartitionEntryEndSector = PartitionEntry->end_sector & 0x3F;
3153                         if (PartitionEntryEndHead == 64 - 1) {
3154                                 DiskParameters->Heads = 64;
3155                                 DiskParameters->Sectors = 32;
3156                                 break;
3157                         } else if (PartitionEntryEndHead == 128 - 1) {
3158                                 DiskParameters->Heads = 128;
3159                                 DiskParameters->Sectors = 32;
3160                                 break;
3161                         } else if (PartitionEntryEndHead == 255 - 1) {
3162                                 DiskParameters->Heads = 255;
3163                                 DiskParameters->Sectors = 63;
3164                                 break;
3165                         }
3166                         PartitionEntry++;
3167                 }
3168                 if (PartitionNumber == 4) {
3169                         PartitionEntryEndHead = FirstPartitionEntry->end_head;
3170                         PartitionEntryEndSector = FirstPartitionEntry->end_sector & 0x3F;
3171                 }
3172                 DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3173                 if (PartitionNumber < 4 && PartitionEntryEndSector == DiskParameters->Sectors) {
3174                         if (DiskParameters->Cylinders != SavedCylinders)
3175                                 BusLogic_Warning("Adopting Geometry %d/%d from Partition Table\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3176                 } else if (PartitionEntryEndHead > 0 || PartitionEntryEndSector > 0) {
3177                         BusLogic_Warning("Warning: Partition Table appears to " "have Geometry %d/%d which is\n", HostAdapter, PartitionEntryEndHead + 1, PartitionEntryEndSector);
3178                         BusLogic_Warning("not compatible with current BusLogic " "Host Adapter Geometry %d/%d\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3179                 }
3180         }
3181         kfree(buf);
3182         return 0;
3183 }
3184
3185
3186 /*
3187   BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3188 */
3189
3190 static int BusLogic_ProcDirectoryInfo(struct Scsi_Host *shost, char *ProcBuffer, char **StartPointer, off_t Offset, int BytesAvailable, int WriteFlag)
3191 {
3192         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) shost->hostdata;
3193         struct BusLogic_TargetStatistics *TargetStatistics;
3194         int TargetID, Length;
3195         char *Buffer;
3196
3197         TargetStatistics = HostAdapter->TargetStatistics;
3198         if (WriteFlag) {
3199                 HostAdapter->ExternalHostAdapterResets = 0;
3200                 HostAdapter->HostAdapterInternalErrors = 0;
3201                 memset(TargetStatistics, 0, BusLogic_MaxTargetDevices * sizeof(struct BusLogic_TargetStatistics));
3202                 return 0;
3203         }
3204         Buffer = HostAdapter->MessageBuffer;
3205         Length = HostAdapter->MessageBufferLength;
3206         Length += sprintf(&Buffer[Length], "\n\
3207 Current Driver Queue Depth:     %d\n\
3208 Currently Allocated CCBs:       %d\n", HostAdapter->DriverQueueDepth, HostAdapter->AllocatedCCBs);
3209         Length += sprintf(&Buffer[Length], "\n\n\
3210                            DATA TRANSFER STATISTICS\n\
3211 \n\
3212 Target  Tagged Queuing  Queue Depth  Active  Attempted  Completed\n\
3213 ======  ==============  ===========  ======  =========  =========\n");
3214         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3215                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3216                 if (!TargetFlags->TargetExists)
3217                         continue;
3218                 Length += sprintf(&Buffer[Length], "  %2d       %s", TargetID, (TargetFlags->TaggedQueuingSupported ? (TargetFlags->TaggedQueuingActive ? "    Active" : (HostAdapter->TaggedQueuingPermitted & (1 << TargetID)
3219                                                                                                                                                                     ? "  Permitted" : "   Disabled"))
3220                                                                           : "Not Supported"));
3221                 Length += sprintf(&Buffer[Length],
3222                                   "         %3d       %3u    %9u        %9u\n", HostAdapter->QueueDepth[TargetID], HostAdapter->ActiveCommands[TargetID], TargetStatistics[TargetID].CommandsAttempted, TargetStatistics[TargetID].CommandsCompleted);
3223         }
3224         Length += sprintf(&Buffer[Length], "\n\
3225 Target  Read Commands  Write Commands   Total Bytes Read    Total Bytes Written\n\
3226 ======  =============  ==============  ===================  ===================\n");
3227         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3228                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3229                 if (!TargetFlags->TargetExists)
3230                         continue;
3231                 Length += sprintf(&Buffer[Length], "  %2d         %9u    %9u", TargetID, TargetStatistics[TargetID].ReadCommands, TargetStatistics[TargetID].WriteCommands);
3232                 if (TargetStatistics[TargetID].TotalBytesRead.Billions > 0)
3233                         Length += sprintf(&Buffer[Length], "     %9u%09u", TargetStatistics[TargetID].TotalBytesRead.Billions, TargetStatistics[TargetID].TotalBytesRead.Units);
3234                 else
3235                         Length += sprintf(&Buffer[Length], "            %9u", TargetStatistics[TargetID].TotalBytesRead.Units);
3236                 if (TargetStatistics[TargetID].TotalBytesWritten.Billions > 0)
3237                         Length += sprintf(&Buffer[Length], "   %9u%09u\n", TargetStatistics[TargetID].TotalBytesWritten.Billions, TargetStatistics[TargetID].TotalBytesWritten.Units);
3238                 else
3239                         Length += sprintf(&Buffer[Length], "         %9u\n", TargetStatistics[TargetID].TotalBytesWritten.Units);
3240         }
3241         Length += sprintf(&Buffer[Length], "\n\
3242 Target  Command    0-1KB      1-2KB      2-4KB      4-8KB     8-16KB\n\
3243 ======  =======  =========  =========  =========  =========  =========\n");
3244         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3245                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3246                 if (!TargetFlags->TargetExists)
3247                         continue;
3248                 Length +=
3249                     sprintf(&Buffer[Length],
3250                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3251                             TargetStatistics[TargetID].ReadCommandSizeBuckets[0],
3252                             TargetStatistics[TargetID].ReadCommandSizeBuckets[1], TargetStatistics[TargetID].ReadCommandSizeBuckets[2], TargetStatistics[TargetID].ReadCommandSizeBuckets[3], TargetStatistics[TargetID].ReadCommandSizeBuckets[4]);
3253                 Length +=
3254                     sprintf(&Buffer[Length],
3255                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3256                             TargetStatistics[TargetID].WriteCommandSizeBuckets[0],
3257                             TargetStatistics[TargetID].WriteCommandSizeBuckets[1], TargetStatistics[TargetID].WriteCommandSizeBuckets[2], TargetStatistics[TargetID].WriteCommandSizeBuckets[3], TargetStatistics[TargetID].WriteCommandSizeBuckets[4]);
3258         }
3259         Length += sprintf(&Buffer[Length], "\n\
3260 Target  Command   16-32KB    32-64KB   64-128KB   128-256KB   256KB+\n\
3261 ======  =======  =========  =========  =========  =========  =========\n");
3262         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3263                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3264                 if (!TargetFlags->TargetExists)
3265                         continue;
3266                 Length +=
3267                     sprintf(&Buffer[Length],
3268                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3269                             TargetStatistics[TargetID].ReadCommandSizeBuckets[5],
3270                             TargetStatistics[TargetID].ReadCommandSizeBuckets[6], TargetStatistics[TargetID].ReadCommandSizeBuckets[7], TargetStatistics[TargetID].ReadCommandSizeBuckets[8], TargetStatistics[TargetID].ReadCommandSizeBuckets[9]);
3271                 Length +=
3272                     sprintf(&Buffer[Length],
3273                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3274                             TargetStatistics[TargetID].WriteCommandSizeBuckets[5],
3275                             TargetStatistics[TargetID].WriteCommandSizeBuckets[6], TargetStatistics[TargetID].WriteCommandSizeBuckets[7], TargetStatistics[TargetID].WriteCommandSizeBuckets[8], TargetStatistics[TargetID].WriteCommandSizeBuckets[9]);
3276         }
3277         Length += sprintf(&Buffer[Length], "\n\n\
3278                            ERROR RECOVERY STATISTICS\n\
3279 \n\
3280           Command Aborts      Bus Device Resets   Host Adapter Resets\n\
3281 Target  Requested Completed  Requested Completed  Requested Completed\n\
3282   ID    \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////\n\
3283 ======   ===== ===== =====    ===== ===== =====    ===== ===== =====\n");
3284         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3285                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3286                 if (!TargetFlags->TargetExists)
3287                         continue;
3288                 Length += sprintf(&Buffer[Length], "\
3289   %2d    %5d %5d %5d    %5d %5d %5d        %5d %5d %5d\n", TargetID, TargetStatistics[TargetID].CommandAbortsRequested, TargetStatistics[TargetID].CommandAbortsAttempted, TargetStatistics[TargetID].CommandAbortsCompleted, TargetStatistics[TargetID].BusDeviceResetsRequested, TargetStatistics[TargetID].BusDeviceResetsAttempted, TargetStatistics[TargetID].BusDeviceResetsCompleted, TargetStatistics[TargetID].HostAdapterResetsRequested, TargetStatistics[TargetID].HostAdapterResetsAttempted, TargetStatistics[TargetID].HostAdapterResetsCompleted);
3290         }
3291         Length += sprintf(&Buffer[Length], "\nExternal Host Adapter Resets: %d\n", HostAdapter->ExternalHostAdapterResets);
3292         Length += sprintf(&Buffer[Length], "Host Adapter Internal Errors: %d\n", HostAdapter->HostAdapterInternalErrors);
3293         if (Length >= BusLogic_MessageBufferSize)
3294                 BusLogic_Error("Message Buffer length %d exceeds size %d\n", HostAdapter, Length, BusLogic_MessageBufferSize);
3295         if ((Length -= Offset) <= 0)
3296                 return 0;
3297         if (Length >= BytesAvailable)
3298                 Length = BytesAvailable;
3299         memcpy(ProcBuffer, HostAdapter->MessageBuffer + Offset, Length);
3300         *StartPointer = ProcBuffer;
3301         return Length;
3302 }
3303
3304
3305 /*
3306   BusLogic_Message prints Driver Messages.
3307 */
3308
3309 static void BusLogic_Message(enum BusLogic_MessageLevel MessageLevel, char *Format, struct BusLogic_HostAdapter *HostAdapter, ...)
3310 {
3311         static char Buffer[BusLogic_LineBufferSize];
3312         static boolean BeginningOfLine = true;
3313         va_list Arguments;
3314         int Length = 0;
3315         va_start(Arguments, HostAdapter);
3316         Length = vsprintf(Buffer, Format, Arguments);
3317         va_end(Arguments);
3318         if (MessageLevel == BusLogic_AnnounceLevel) {
3319                 static int AnnouncementLines = 0;
3320                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3321                 HostAdapter->MessageBufferLength += Length;
3322                 if (++AnnouncementLines <= 2)
3323                         printk("%sscsi: %s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3324         } else if (MessageLevel == BusLogic_InfoLevel) {
3325                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3326                 HostAdapter->MessageBufferLength += Length;
3327                 if (BeginningOfLine) {
3328                         if (Buffer[0] != '\n' || Length > 1)
3329                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3330                 } else
3331                         printk("%s", Buffer);
3332         } else {
3333                 if (BeginningOfLine) {
3334                         if (HostAdapter != NULL && HostAdapter->HostAdapterInitialized)
3335                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3336                         else
3337                                 printk("%s%s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3338                 } else
3339                         printk("%s", Buffer);
3340         }
3341         BeginningOfLine = (Buffer[Length - 1] == '\n');
3342 }
3343
3344
3345 /*
3346   BusLogic_ParseKeyword parses an individual option keyword.  It returns true
3347   and updates the pointer if the keyword is recognized and false otherwise.
3348 */
3349
3350 static boolean __init BusLogic_ParseKeyword(char **StringPointer, char *Keyword)
3351 {
3352         char *Pointer = *StringPointer;
3353         while (*Keyword != '\0') {
3354                 char StringChar = *Pointer++;
3355                 char KeywordChar = *Keyword++;
3356                 if (StringChar >= 'A' && StringChar <= 'Z')
3357                         StringChar += 'a' - 'Z';
3358                 if (KeywordChar >= 'A' && KeywordChar <= 'Z')
3359                         KeywordChar += 'a' - 'Z';
3360                 if (StringChar != KeywordChar)
3361                         return false;
3362         }
3363         *StringPointer = Pointer;
3364         return true;
3365 }
3366
3367
3368 /*
3369   BusLogic_ParseDriverOptions handles processing of BusLogic Driver Options
3370   specifications.
3371
3372   BusLogic Driver Options may be specified either via the Linux Kernel Command
3373   Line or via the Loadable Kernel Module Installation Facility.  Driver Options
3374   for multiple host adapters may be specified either by separating the option
3375   strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3376   command line.  Individual option specifications for a single host adapter are
3377   separated by commas.  The Probing and Debugging Options apply to all host
3378   adapters whereas the remaining options apply individually only to the
3379   selected host adapter.
3380
3381   The BusLogic Driver Probing Options are described in
3382   <file:Documentation/scsi/BusLogic.txt>.
3383 */
3384
3385 static int __init BusLogic_ParseDriverOptions(char *OptionsString)
3386 {
3387         while (true) {
3388                 struct BusLogic_DriverOptions *DriverOptions = &BusLogic_DriverOptions[BusLogic_DriverOptionsCount++];
3389                 int TargetID;
3390                 memset(DriverOptions, 0, sizeof(struct BusLogic_DriverOptions));
3391                 while (*OptionsString != '\0' && *OptionsString != ';') {
3392                         /* Probing Options. */
3393                         if (BusLogic_ParseKeyword(&OptionsString, "IO:")) {
3394                                 unsigned long IO_Address = simple_strtoul(OptionsString, &OptionsString, 0);
3395                                 BusLogic_ProbeOptions.LimitedProbeISA = true;
3396                                 switch (IO_Address) {
3397                                 case 0x330:
3398                                         BusLogic_ProbeOptions.Probe330 = true;
3399                                         break;
3400                                 case 0x334:
3401                                         BusLogic_ProbeOptions.Probe334 = true;
3402                                         break;
3403                                 case 0x230:
3404                                         BusLogic_ProbeOptions.Probe230 = true;
3405                                         break;
3406                                 case 0x234:
3407                                         BusLogic_ProbeOptions.Probe234 = true;
3408                                         break;
3409                                 case 0x130:
3410                                         BusLogic_ProbeOptions.Probe130 = true;
3411                                         break;
3412                                 case 0x134:
3413                                         BusLogic_ProbeOptions.Probe134 = true;
3414                                         break;
3415                                 default:
3416                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid I/O Address 0x%X)\n", NULL, IO_Address);
3417                                         return 0;
3418                                 }
3419                         } else if (BusLogic_ParseKeyword(&OptionsString, "NoProbeISA"))
3420                                 BusLogic_ProbeOptions.NoProbeISA = true;
3421                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbePCI"))
3422                                 BusLogic_ProbeOptions.NoProbePCI = true;
3423                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbe"))
3424                                 BusLogic_ProbeOptions.NoProbe = true;
3425                         else if (BusLogic_ParseKeyword(&OptionsString, "NoSortPCI"))
3426                                 BusLogic_ProbeOptions.NoSortPCI = true;
3427                         else if (BusLogic_ParseKeyword(&OptionsString, "MultiMasterFirst"))
3428                                 BusLogic_ProbeOptions.MultiMasterFirst = true;
3429                         else if (BusLogic_ParseKeyword(&OptionsString, "FlashPointFirst"))
3430                                 BusLogic_ProbeOptions.FlashPointFirst = true;
3431                         /* Tagged Queuing Options. */
3432                         else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:[") || BusLogic_ParseKeyword(&OptionsString, "QD:[")) {
3433                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
3434                                         unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3435                                         if (QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3436                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3437                                                 return 0;
3438                                         }
3439                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3440                                         if (*OptionsString == ',')
3441                                                 OptionsString++;
3442                                         else if (*OptionsString == ']')
3443                                                 break;
3444                                         else {
3445                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(',' or ']' expected at '%s')\n", NULL, OptionsString);
3446                                                 return 0;
3447                                         }
3448                                 }
3449                                 if (*OptionsString != ']') {
3450                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(']' expected at '%s')\n", NULL, OptionsString);
3451                                         return 0;
3452                                 } else
3453                                         OptionsString++;
3454                         } else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:") || BusLogic_ParseKeyword(&OptionsString, "QD:")) {
3455                                 unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3456                                 if (QueueDepth == 0 || QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3457                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3458                                         return 0;
3459                                 }
3460                                 DriverOptions->CommonQueueDepth = QueueDepth;
3461                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3462                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3463                         } else if (BusLogic_ParseKeyword(&OptionsString, "TaggedQueuing:") || BusLogic_ParseKeyword(&OptionsString, "TQ:")) {
3464                                 if (BusLogic_ParseKeyword(&OptionsString, "Default")) {
3465                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3466                                         DriverOptions->TaggedQueuingPermittedMask = 0x0000;
3467                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Enable")) {
3468                                         DriverOptions->TaggedQueuingPermitted = 0xFFFF;
3469                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3470                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Disable")) {
3471                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3472                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3473                                 } else {
3474                                         unsigned short TargetBit;
3475                                         for (TargetID = 0, TargetBit = 1; TargetID < BusLogic_MaxTargetDevices; TargetID++, TargetBit <<= 1)
3476                                                 switch (*OptionsString++) {
3477                                                 case 'Y':
3478                                                         DriverOptions->TaggedQueuingPermitted |= TargetBit;
3479                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3480                                                         break;
3481                                                 case 'N':
3482                                                         DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3483                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3484                                                         break;
3485                                                 case 'X':
3486                                                         break;
3487                                                 default:
3488                                                         OptionsString--;
3489                                                         TargetID = BusLogic_MaxTargetDevices;
3490                                                         break;
3491                                                 }
3492                                 }
3493                         }
3494                         /* Miscellaneous Options. */
3495                         else if (BusLogic_ParseKeyword(&OptionsString, "BusSettleTime:") || BusLogic_ParseKeyword(&OptionsString, "BST:")) {
3496                                 unsigned short BusSettleTime = simple_strtoul(OptionsString, &OptionsString, 0);
3497                                 if (BusSettleTime > 5 * 60) {
3498                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Bus Settle Time %d)\n", NULL, BusSettleTime);
3499                                         return 0;
3500                                 }
3501                                 DriverOptions->BusSettleTime = BusSettleTime;
3502                         } else if (BusLogic_ParseKeyword(&OptionsString, "InhibitTargetInquiry"))
3503                                 DriverOptions->LocalOptions.InhibitTargetInquiry = true;
3504                         /* Debugging Options. */
3505                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceProbe"))
3506                                 BusLogic_GlobalOptions.TraceProbe = true;
3507                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceHardwareReset"))
3508                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3509                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceConfiguration"))
3510                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3511                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceErrors"))
3512                                 BusLogic_GlobalOptions.TraceErrors = true;
3513                         else if (BusLogic_ParseKeyword(&OptionsString, "Debug")) {
3514                                 BusLogic_GlobalOptions.TraceProbe = true;
3515                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3516                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3517                                 BusLogic_GlobalOptions.TraceErrors = true;
3518                         }
3519                         if (*OptionsString == ',')
3520                                 OptionsString++;
3521                         else if (*OptionsString != ';' && *OptionsString != '\0') {
3522                                 BusLogic_Error("BusLogic: Unexpected Driver Option '%s' " "ignored\n", NULL, OptionsString);
3523                                 *OptionsString = '\0';
3524                         }
3525                 }
3526                 if (!(BusLogic_DriverOptionsCount == 0 || BusLogic_ProbeInfoCount == 0 || BusLogic_DriverOptionsCount == BusLogic_ProbeInfoCount)) {
3527                         BusLogic_Error("BusLogic: Invalid Driver Options " "(all or no I/O Addresses must be specified)\n", NULL);
3528                         return 0;
3529                 }
3530                 /*
3531                    Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3532                    multiple commands is not possible.
3533                  */
3534                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3535                         if (DriverOptions->QueueDepth[TargetID] == 1) {
3536                                 unsigned short TargetBit = 1 << TargetID;
3537                                 DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3538                                 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3539                         }
3540                 if (*OptionsString == ';')
3541                         OptionsString++;
3542                 if (*OptionsString == '\0')
3543                         return 0;
3544         }
3545         return 1;
3546 }
3547
3548 /*
3549   Get it all started
3550 */
3551
3552 static struct scsi_host_template Bus_Logic_template = {
3553         .module = THIS_MODULE,
3554         .proc_name = "BusLogic",
3555         .proc_info = BusLogic_ProcDirectoryInfo,
3556         .name = "BusLogic",
3557         .info = BusLogic_DriverInfo,
3558         .queuecommand = BusLogic_QueueCommand,
3559         .slave_configure = BusLogic_SlaveConfigure,
3560         .bios_param = BusLogic_BIOSDiskParameters,
3561         .eh_host_reset_handler = BusLogic_host_reset,
3562 #if 0
3563         .eh_abort_handler = BusLogic_AbortCommand,
3564 #endif
3565         .unchecked_isa_dma = 1,
3566         .max_sectors = 128,
3567         .use_clustering = ENABLE_CLUSTERING,
3568 };
3569
3570 /*
3571   BusLogic_Setup handles processing of Kernel Command Line Arguments.
3572 */
3573
3574 static int __init BusLogic_Setup(char *str)
3575 {
3576         int ints[3];
3577
3578         (void) get_options(str, ARRAY_SIZE(ints), ints);
3579
3580         if (ints[0] != 0) {
3581                 BusLogic_Error("BusLogic: Obsolete Command Line Entry " "Format Ignored\n", NULL);
3582                 return 0;
3583         }
3584         if (str == NULL || *str == '\0')
3585                 return 0;
3586         return BusLogic_ParseDriverOptions(str);
3587 }
3588
3589 /*
3590  * Exit function.  Deletes all hosts associated with this driver.
3591  */
3592
3593 static void __exit BusLogic_exit(void)
3594 {
3595         struct BusLogic_HostAdapter *ha, *next;
3596
3597         list_for_each_entry_safe(ha, next, &BusLogic_host_list, host_list)
3598                 BusLogic_ReleaseHostAdapter(ha);
3599 }
3600
3601 __setup("BusLogic=", BusLogic_Setup);
3602
3603 module_init(BusLogic_init);
3604 module_exit(BusLogic_exit);