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 bool __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, bool 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
 308         scsi_dma_unmap(CCB->Command);
 309         pci_unmap_single(HostAdapter->PCI_Device, CCB->SenseDataPointer,
 310                          CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
 311
 312         CCB->Command = NULL;
 313         CCB->Status = BusLogic_CCB_Free;
 314         CCB->Next = HostAdapter->Free_CCBs;
 315         HostAdapter->Free_CCBs = CCB;
 316 }
 317
 318
 319 /*
 320   BusLogic_Command sends the command OperationCode to HostAdapter, optionally
 321   providing ParameterLength bytes of ParameterData and receiving at most
 322   ReplyLength bytes of ReplyData; any excess reply data is received but
 323   discarded.
 324
 325   On success, this function returns the number of reply bytes read from
 326   the Host Adapter (including any discarded data); on failure, it returns
 327   -1 if the command was invalid, or -2 if a timeout occurred.
 328
 329   BusLogic_Command is called exclusively during host adapter detection and
 330   initialization, so performance and latency are not critical, and exclusive
 331   access to the Host Adapter hardware is assumed.  Once the host adapter and
 332   driver are initialized, the only Host Adapter command that is issued is the
 333   single byte Execute Mailbox Command operation code, which does not require
 334   waiting for the Host Adapter Ready bit to be set in the Status Register.
 335 */
 336
 337 static int BusLogic_Command(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_OperationCode OperationCode, void *ParameterData, int ParameterLength, void *ReplyData, int ReplyLength)
 338 {
 339         unsigned char *ParameterPointer = (unsigned char *) ParameterData;
 340         unsigned char *ReplyPointer = (unsigned char *) ReplyData;
 341         union BusLogic_StatusRegister StatusRegister;
 342         union BusLogic_InterruptRegister InterruptRegister;
 343         unsigned long ProcessorFlags = 0;
 344         int ReplyBytes = 0, Result;
 345         long TimeoutCounter;
 346         /*
 347            Clear out the Reply Data if provided.
 348          */
 349         if (ReplyLength > 0)
 350                 memset(ReplyData, 0, ReplyLength);
 351         /*
 352            If the IRQ Channel has not yet been acquired, then interrupts must be
 353            disabled while issuing host adapter commands since a Command Complete
 354            interrupt could occur if the IRQ Channel was previously enabled by another
 355            BusLogic Host Adapter or another driver sharing the same IRQ Channel.
 356          */
 357         if (!HostAdapter->IRQ_ChannelAcquired)
 358                 local_irq_save(ProcessorFlags);
 359         /*
 360            Wait for the Host Adapter Ready bit to be set and the Command/Parameter
 361            Register Busy bit to be reset in the Status Register.
 362          */
 363         TimeoutCounter = 10000;
 364         while (--TimeoutCounter >= 0) {
 365                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 366                 if (StatusRegister.sr.HostAdapterReady && !StatusRegister.sr.CommandParameterRegisterBusy)
 367                         break;
 368                 udelay(100);
 369         }
 370         if (TimeoutCounter < 0) {
 371                 BusLogic_CommandFailureReason = "Timeout waiting for Host Adapter Ready";
 372                 Result = -2;
 373                 goto Done;
 374         }
 375         /*
 376            Write the OperationCode to the Command/Parameter Register.
 377          */
 378         HostAdapter->HostAdapterCommandCompleted = false;
 379         BusLogic_WriteCommandParameterRegister(HostAdapter, OperationCode);
 380         /*
 381            Write any additional Parameter Bytes.
 382          */
 383         TimeoutCounter = 10000;
 384         while (ParameterLength > 0 && --TimeoutCounter >= 0) {
 385                 /*
 386                    Wait 100 microseconds to give the Host Adapter enough time to determine
 387                    whether the last value written to the Command/Parameter Register was
 388                    valid or not.  If the Command Complete bit is set in the Interrupt
 389                    Register, then the Command Invalid bit in the Status Register will be
 390                    reset if the Operation Code or Parameter was valid and the command
 391                    has completed, or set if the Operation Code or Parameter was invalid.
 392                    If the Data In Register Ready bit is set in the Status Register, then
 393                    the Operation Code was valid, and data is waiting to be read back
 394                    from the Host Adapter.  Otherwise, wait for the Command/Parameter
 395                    Register Busy bit in the Status Register to be reset.
 396                  */
 397                 udelay(100);
 398                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 399                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 400                 if (InterruptRegister.ir.CommandComplete)
 401                         break;
 402                 if (HostAdapter->HostAdapterCommandCompleted)
 403                         break;
 404                 if (StatusRegister.sr.DataInRegisterReady)
 405                         break;
 406                 if (StatusRegister.sr.CommandParameterRegisterBusy)
 407                         continue;
 408                 BusLogic_WriteCommandParameterRegister(HostAdapter, *ParameterPointer++);
 409                 ParameterLength--;
 410         }
 411         if (TimeoutCounter < 0) {
 412                 BusLogic_CommandFailureReason = "Timeout waiting for Parameter Acceptance";
 413                 Result = -2;
 414                 goto Done;
 415         }
 416         /*
 417            The Modify I/O Address command does not cause a Command Complete Interrupt.
 418          */
 419         if (OperationCode == BusLogic_ModifyIOAddress) {
 420                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 421                 if (StatusRegister.sr.CommandInvalid) {
 422                         BusLogic_CommandFailureReason = "Modify I/O Address Invalid";
 423                         Result = -1;
 424                         goto Done;
 425                 }
 426                 if (BusLogic_GlobalOptions.TraceConfiguration)
 427                         BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: " "(Modify I/O Address)\n", HostAdapter, OperationCode, StatusRegister.All);
 428                 Result = 0;
 429                 goto Done;
 430         }
 431         /*
 432            Select an appropriate timeout value for awaiting command completion.
 433          */
 434         switch (OperationCode) {
 435         case BusLogic_InquireInstalledDevicesID0to7:
 436         case BusLogic_InquireInstalledDevicesID8to15:
 437         case BusLogic_InquireTargetDevices:
 438                 /* Approximately 60 seconds. */
 439                 TimeoutCounter = 60 * 10000;
 440                 break;
 441         default:
 442                 /* Approximately 1 second. */
 443                 TimeoutCounter = 10000;
 444                 break;
 445         }
 446         /*
 447            Receive any Reply Bytes, waiting for either the Command Complete bit to
 448            be set in the Interrupt Register, or for the Interrupt Handler to set the
 449            Host Adapter Command Completed bit in the Host Adapter structure.
 450          */
 451         while (--TimeoutCounter >= 0) {
 452                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
 453                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 454                 if (InterruptRegister.ir.CommandComplete)
 455                         break;
 456                 if (HostAdapter->HostAdapterCommandCompleted)
 457                         break;
 458                 if (StatusRegister.sr.DataInRegisterReady) {
 459                         if (++ReplyBytes <= ReplyLength)
 460                                 *ReplyPointer++ = BusLogic_ReadDataInRegister(HostAdapter);
 461                         else
 462                                 BusLogic_ReadDataInRegister(HostAdapter);
 463                 }
 464                 if (OperationCode == BusLogic_FetchHostAdapterLocalRAM && StatusRegister.sr.HostAdapterReady)
 465                         break;
 466                 udelay(100);
 467         }
 468         if (TimeoutCounter < 0) {
 469                 BusLogic_CommandFailureReason = "Timeout waiting for Command Complete";
 470                 Result = -2;
 471                 goto Done;
 472         }
 473         /*
 474            Clear any pending Command Complete Interrupt.
 475          */
 476         BusLogic_InterruptReset(HostAdapter);
 477         /*
 478            Provide tracing information if requested.
 479          */
 480         if (BusLogic_GlobalOptions.TraceConfiguration) {
 481                 int i;
 482                 BusLogic_Notice("BusLogic_Command(%02X) Status = %02X: %2d ==> %2d:", HostAdapter, OperationCode, StatusRegister.All, ReplyLength, ReplyBytes);
 483                 if (ReplyLength > ReplyBytes)
 484                         ReplyLength = ReplyBytes;
 485                 for (i = 0; i < ReplyLength; i++)
 486                         BusLogic_Notice(" %02X", HostAdapter, ((unsigned char *) ReplyData)[i]);
 487                 BusLogic_Notice("\n", HostAdapter);
 488         }
 489         /*
 490            Process Command Invalid conditions.
 491          */
 492         if (StatusRegister.sr.CommandInvalid) {
 493                 /*
 494                    Some early BusLogic Host Adapters may not recover properly from
 495                    a Command Invalid condition, so if this appears to be the case,
 496                    a Soft Reset is issued to the Host Adapter.  Potentially invalid
 497                    commands are never attempted after Mailbox Initialization is
 498                    performed, so there should be no Host Adapter state lost by a
 499                    Soft Reset in response to a Command Invalid condition.
 500                  */
 501                 udelay(1000);
 502                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
 503                 if (StatusRegister.sr.CommandInvalid ||
 504                     StatusRegister.sr.Reserved ||
 505                     StatusRegister.sr.DataInRegisterReady ||
 506                     StatusRegister.sr.CommandParameterRegisterBusy || !StatusRegister.sr.HostAdapterReady || !StatusRegister.sr.InitializationRequired || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.DiagnosticFailure) {
 507                         BusLogic_SoftReset(HostAdapter);
 508                         udelay(1000);
 509                 }
 510                 BusLogic_CommandFailureReason = "Command Invalid";
 511                 Result = -1;
 512                 goto Done;
 513         }
 514         /*
 515            Handle Excess Parameters Supplied conditions.
 516          */
 517         if (ParameterLength > 0) {
 518                 BusLogic_CommandFailureReason = "Excess Parameters Supplied";
 519                 Result = -1;
 520                 goto Done;
 521         }
 522         /*
 523            Indicate the command completed successfully.
 524          */
 525         BusLogic_CommandFailureReason = NULL;
 526         Result = ReplyBytes;
 527         /*
 528            Restore the interrupt status if necessary and return.
 529          */
 530       Done:
 531         if (!HostAdapter->IRQ_ChannelAcquired)
 532                 local_irq_restore(ProcessorFlags);
 533         return Result;
 534 }
 535
 536
 537 /*
 538   BusLogic_AppendProbeAddressISA appends a single ISA I/O Address to the list
 539   of I/O Address and Bus Probe Information to be checked for potential BusLogic
 540   Host Adapters.
 541 */
 542
 543 static void __init BusLogic_AppendProbeAddressISA(unsigned long IO_Address)
 544 {
 545         struct BusLogic_ProbeInfo *ProbeInfo;
 546         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 547                 return;
 548         ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 549         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 550         ProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 551         ProbeInfo->IO_Address = IO_Address;
 552         ProbeInfo->PCI_Device = NULL;
 553 }
 554
 555
 556 /*
 557   BusLogic_InitializeProbeInfoListISA initializes the list of I/O Address and
 558   Bus Probe Information to be checked for potential BusLogic SCSI Host Adapters
 559   only from the list of standard BusLogic MultiMaster ISA I/O Addresses.
 560 */
 561
 562 static void __init BusLogic_InitializeProbeInfoListISA(struct BusLogic_HostAdapter
 563                                                        *PrototypeHostAdapter)
 564 {
 565         /*
 566            If BusLogic Driver Options specifications requested that ISA Bus Probes
 567            be inhibited, do not proceed further.
 568          */
 569         if (BusLogic_ProbeOptions.NoProbeISA)
 570                 return;
 571         /*
 572            Append the list of standard BusLogic MultiMaster ISA I/O Addresses.
 573          */
 574         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe330)
 575                 BusLogic_AppendProbeAddressISA(0x330);
 576         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe334)
 577                 BusLogic_AppendProbeAddressISA(0x334);
 578         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe230)
 579                 BusLogic_AppendProbeAddressISA(0x230);
 580         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe234)
 581                 BusLogic_AppendProbeAddressISA(0x234);
 582         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe130)
 583                 BusLogic_AppendProbeAddressISA(0x130);
 584         if (!BusLogic_ProbeOptions.LimitedProbeISA || BusLogic_ProbeOptions.Probe134)
 585                 BusLogic_AppendProbeAddressISA(0x134);
 586 }
 587
 588
 589 #ifdef CONFIG_PCI
 590
 591
 592 /*
 593   BusLogic_SortProbeInfo sorts a section of BusLogic_ProbeInfoList in order
 594   of increasing PCI Bus and Device Number.
 595 */
 596
 597 static void __init BusLogic_SortProbeInfo(struct BusLogic_ProbeInfo *ProbeInfoList, int ProbeInfoCount)
 598 {
 599         int LastInterchange = ProbeInfoCount - 1, Bound, j;
 600         while (LastInterchange > 0) {
 601                 Bound = LastInterchange;
 602                 LastInterchange = 0;
 603                 for (j = 0; j < Bound; j++) {
 604                         struct BusLogic_ProbeInfo *ProbeInfo1 = &ProbeInfoList[j];
 605                         struct BusLogic_ProbeInfo *ProbeInfo2 = &ProbeInfoList[j + 1];
 606                         if (ProbeInfo1->Bus > ProbeInfo2->Bus || (ProbeInfo1->Bus == ProbeInfo2->Bus && (ProbeInfo1->Device > ProbeInfo2->Device))) {
 607                                 struct BusLogic_ProbeInfo TempProbeInfo;
 608                                 memcpy(&TempProbeInfo, ProbeInfo1, sizeof(struct BusLogic_ProbeInfo));
 609                                 memcpy(ProbeInfo1, ProbeInfo2, sizeof(struct BusLogic_ProbeInfo));
 610                                 memcpy(ProbeInfo2, &TempProbeInfo, sizeof(struct BusLogic_ProbeInfo));
 611                                 LastInterchange = j;
 612                         }
 613                 }
 614         }
 615 }
 616
 617
 618 /*
 619   BusLogic_InitializeMultiMasterProbeInfo initializes the list of I/O Address
 620   and Bus Probe Information to be checked for potential BusLogic MultiMaster
 621   SCSI Host Adapters by interrogating the PCI Configuration Space on PCI
 622   machines as well as from the list of standard BusLogic MultiMaster ISA
 623   I/O Addresses.  It returns the number of PCI MultiMaster Host Adapters found.
 624 */
 625
 626 static int __init BusLogic_InitializeMultiMasterProbeInfo(struct BusLogic_HostAdapter
 627                                                           *PrototypeHostAdapter)
 628 {
 629         struct BusLogic_ProbeInfo *PrimaryProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount];
 630         int NonPrimaryPCIMultiMasterIndex = BusLogic_ProbeInfoCount + 1;
 631         int NonPrimaryPCIMultiMasterCount = 0, PCIMultiMasterCount = 0;
 632         bool ForceBusDeviceScanningOrder = false;
 633         bool ForceBusDeviceScanningOrderChecked = false;
 634         bool StandardAddressSeen[6];
 635         struct pci_dev *PCI_Device = NULL;
 636         int i;
 637         if (BusLogic_ProbeInfoCount >= BusLogic_MaxHostAdapters)
 638                 return 0;
 639         BusLogic_ProbeInfoCount++;
 640         for (i = 0; i < 6; i++)
 641                 StandardAddressSeen[i] = false;
 642         /*
 643            Iterate over the MultiMaster PCI Host Adapters.  For each enumerated host
 644            adapter, determine whether its ISA Compatible I/O Port is enabled and if
 645            so, whether it is assigned the Primary I/O Address.  A host adapter that is
 646            assigned the Primary I/O Address will always be the preferred boot device.
 647            The MultiMaster BIOS will first recognize a host adapter at the Primary I/O
 648            Address, then any other PCI host adapters, and finally any host adapters
 649            located at the remaining standard ISA I/O Addresses.  When a PCI host
 650            adapter is found with its ISA Compatible I/O Port enabled, a command is
 651            issued to disable the ISA Compatible I/O Port, and it is noted that the
 652            particular standard ISA I/O Address need not be probed.
 653          */
 654         PrimaryProbeInfo->IO_Address = 0;
 655         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER, PCI_Device)) != NULL) {
 656                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 657                 struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
 658                 enum BusLogic_ISACompatibleIOPort ModifyIOAddressRequest;
 659                 unsigned char Bus;
 660                 unsigned char Device;
 661                 unsigned int IRQ_Channel;
 662                 unsigned long BaseAddress0;
 663                 unsigned long BaseAddress1;
 664                 unsigned long IO_Address;
 665                 unsigned long PCI_Address;
 666
 667                 if (pci_enable_device(PCI_Device))
 668                         continue;
 669
 670                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK ))
 671                         continue;
 672
 673                 Bus = PCI_Device->bus->number;
 674                 Device = PCI_Device->devfn >> 3;
 675                 IRQ_Channel = PCI_Device->irq;
 676                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 677                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 678
 679                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 680                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "MultiMaster Host Adapter\n", NULL, BaseAddress0);
 681                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 682                         continue;
 683                 }
 684                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 685                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "MultiMaster Host Adapter\n", NULL, BaseAddress1);
 686                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 687                         continue;
 688                 }
 689                 if (IRQ_Channel == 0) {
 690                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "MultiMaster Host Adapter\n", NULL, IRQ_Channel);
 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 (BusLogic_GlobalOptions.TraceProbe) {
 695                         BusLogic_Notice("BusLogic: PCI MultiMaster Host Adapter " "detected at\n", NULL);
 696                         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);
 697                 }
 698                 /*
 699                    Issue the Inquire PCI Host Adapter Information command to determine
 700                    the ISA Compatible I/O Port.  If the ISA Compatible I/O Port is
 701                    known and enabled, note that the particular Standard ISA I/O
 702                    Address should not be probed.
 703                  */
 704                 HostAdapter->IO_Address = IO_Address;
 705                 BusLogic_InterruptReset(HostAdapter);
 706                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
 707                     == sizeof(PCIHostAdapterInformation)) {
 708                         if (PCIHostAdapterInformation.ISACompatibleIOPort < 6)
 709                                 StandardAddressSeen[PCIHostAdapterInformation.ISACompatibleIOPort] = true;
 710                 } else
 711                         PCIHostAdapterInformation.ISACompatibleIOPort = BusLogic_IO_Disable;
 712                 /*
 713                  * Issue the Modify I/O Address command to disable the ISA Compatible
 714                  * I/O Port.  On PCI Host Adapters, the Modify I/O Address command
 715                  * allows modification of the ISA compatible I/O Address that the Host
 716                  * Adapter responds to; it does not affect the PCI compliant I/O Address
 717                  * assigned at system initialization.
 718                  */
 719                 ModifyIOAddressRequest = BusLogic_IO_Disable;
 720                 BusLogic_Command(HostAdapter, BusLogic_ModifyIOAddress, &ModifyIOAddressRequest, sizeof(ModifyIOAddressRequest), NULL, 0);
 721                 /*
 722                    For the first MultiMaster Host Adapter enumerated, issue the Fetch
 723                    Host Adapter Local RAM command to read byte 45 of the AutoSCSI area,
 724                    for the setting of the "Use Bus And Device # For PCI Scanning Seq."
 725                    option.  Issue the Inquire Board ID command since this option is
 726                    only valid for the BT-948/958/958D.
 727                  */
 728                 if (!ForceBusDeviceScanningOrderChecked) {
 729                         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 730                         struct BusLogic_AutoSCSIByte45 AutoSCSIByte45;
 731                         struct BusLogic_BoardID BoardID;
 732                         FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset + 45;
 733                         FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIByte45);
 734                         BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIByte45, sizeof(AutoSCSIByte45));
 735                         BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID));
 736                         if (BoardID.FirmwareVersion1stDigit == '5')
 737                                 ForceBusDeviceScanningOrder = AutoSCSIByte45.ForceBusDeviceScanningOrder;
 738                         ForceBusDeviceScanningOrderChecked = true;
 739                 }
 740                 /*
 741                    Determine whether this MultiMaster Host Adapter has its ISA
 742                    Compatible I/O Port enabled and is assigned the Primary I/O Address.
 743                    If it does, then it is the Primary MultiMaster Host Adapter and must
 744                    be recognized first.  If it does not, then it is added to the list
 745                    for probing after any Primary MultiMaster Host Adapter is probed.
 746                  */
 747                 if (PCIHostAdapterInformation.ISACompatibleIOPort == BusLogic_IO_330) {
 748                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 749                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 750                         PrimaryProbeInfo->IO_Address = IO_Address;
 751                         PrimaryProbeInfo->PCI_Address = PCI_Address;
 752                         PrimaryProbeInfo->Bus = Bus;
 753                         PrimaryProbeInfo->Device = Device;
 754                         PrimaryProbeInfo->IRQ_Channel = IRQ_Channel;
 755                         PrimaryProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 756                         PCIMultiMasterCount++;
 757                 } else if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 758                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 759                         ProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 760                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 761                         ProbeInfo->IO_Address = IO_Address;
 762                         ProbeInfo->PCI_Address = PCI_Address;
 763                         ProbeInfo->Bus = Bus;
 764                         ProbeInfo->Device = Device;
 765                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 766                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 767                         NonPrimaryPCIMultiMasterCount++;
 768                         PCIMultiMasterCount++;
 769                 } else
 770                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 771         }
 772         /*
 773            If the AutoSCSI "Use Bus And Device # For PCI Scanning Seq." option is ON
 774            for the first enumerated MultiMaster Host Adapter, and if that host adapter
 775            is a BT-948/958/958D, then the MultiMaster BIOS will recognize MultiMaster
 776            Host Adapters in the order of increasing PCI Bus and Device Number.  In
 777            that case, sort the probe information into the same order the BIOS uses.
 778            If this option is OFF, then the MultiMaster BIOS will recognize MultiMaster
 779            Host Adapters in the order they are enumerated by the PCI BIOS, and hence
 780            no sorting is necessary.
 781          */
 782         if (ForceBusDeviceScanningOrder)
 783                 BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[NonPrimaryPCIMultiMasterIndex], NonPrimaryPCIMultiMasterCount);
 784         /*
 785            If no PCI MultiMaster Host Adapter is assigned the Primary I/O Address,
 786            then the Primary I/O Address must be probed explicitly before any PCI
 787            host adapters are probed.
 788          */
 789         if (!BusLogic_ProbeOptions.NoProbeISA)
 790                 if (PrimaryProbeInfo->IO_Address == 0 &&
 791                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 792                                  BusLogic_ProbeOptions.Probe330)) {
 793                         PrimaryProbeInfo->HostAdapterType = BusLogic_MultiMaster;
 794                         PrimaryProbeInfo->HostAdapterBusType = BusLogic_ISA_Bus;
 795                         PrimaryProbeInfo->IO_Address = 0x330;
 796                 }
 797         /*
 798            Append the list of standard BusLogic MultiMaster ISA I/O Addresses,
 799            omitting the Primary I/O Address which has already been handled.
 800          */
 801         if (!BusLogic_ProbeOptions.NoProbeISA) {
 802                 if (!StandardAddressSeen[1] &&
 803                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 804                                  BusLogic_ProbeOptions.Probe334))
 805                         BusLogic_AppendProbeAddressISA(0x334);
 806                 if (!StandardAddressSeen[2] &&
 807                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 808                                  BusLogic_ProbeOptions.Probe230))
 809                         BusLogic_AppendProbeAddressISA(0x230);
 810                 if (!StandardAddressSeen[3] &&
 811                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 812                                  BusLogic_ProbeOptions.Probe234))
 813                         BusLogic_AppendProbeAddressISA(0x234);
 814                 if (!StandardAddressSeen[4] &&
 815                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 816                                  BusLogic_ProbeOptions.Probe130))
 817                         BusLogic_AppendProbeAddressISA(0x130);
 818                 if (!StandardAddressSeen[5] &&
 819                                 (!BusLogic_ProbeOptions.LimitedProbeISA ||
 820                                  BusLogic_ProbeOptions.Probe134))
 821                         BusLogic_AppendProbeAddressISA(0x134);
 822         }
 823         /*
 824            Iterate over the older non-compliant MultiMaster PCI Host Adapters,
 825            noting the PCI bus location and assigned IRQ Channel.
 826          */
 827         PCI_Device = NULL;
 828         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC, PCI_Device)) != NULL) {
 829                 unsigned char Bus;
 830                 unsigned char Device;
 831                 unsigned int IRQ_Channel;
 832                 unsigned long IO_Address;
 833
 834                 if (pci_enable_device(PCI_Device))
 835                         continue;
 836
 837                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
 838                         continue;
 839
 840                 Bus = PCI_Device->bus->number;
 841                 Device = PCI_Device->devfn >> 3;
 842                 IRQ_Channel = PCI_Device->irq;
 843                 IO_Address = pci_resource_start(PCI_Device, 0);
 844
 845                 if (IO_Address == 0 || IRQ_Channel == 0)
 846                         continue;
 847                 for (i = 0; i < BusLogic_ProbeInfoCount; i++) {
 848                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[i];
 849                         if (ProbeInfo->IO_Address == IO_Address && ProbeInfo->HostAdapterType == BusLogic_MultiMaster) {
 850                                 ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 851                                 ProbeInfo->PCI_Address = 0;
 852                                 ProbeInfo->Bus = Bus;
 853                                 ProbeInfo->Device = Device;
 854                                 ProbeInfo->IRQ_Channel = IRQ_Channel;
 855                                 ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 856                                 break;
 857                         }
 858                 }
 859         }
 860         return PCIMultiMasterCount;
 861 }
 862
 863
 864 /*
 865   BusLogic_InitializeFlashPointProbeInfo initializes the list of I/O Address
 866   and Bus Probe Information to be checked for potential BusLogic FlashPoint
 867   Host Adapters by interrogating the PCI Configuration Space.  It returns the
 868   number of FlashPoint Host Adapters found.
 869 */
 870
 871 static int __init BusLogic_InitializeFlashPointProbeInfo(struct BusLogic_HostAdapter
 872                                                          *PrototypeHostAdapter)
 873 {
 874         int FlashPointIndex = BusLogic_ProbeInfoCount, FlashPointCount = 0;
 875         struct pci_dev *PCI_Device = NULL;
 876         /*
 877            Interrogate PCI Configuration Space for any FlashPoint Host Adapters.
 878          */
 879         while ((PCI_Device = pci_get_device(PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT, PCI_Device)) != NULL) {
 880                 unsigned char Bus;
 881                 unsigned char Device;
 882                 unsigned int IRQ_Channel;
 883                 unsigned long BaseAddress0;
 884                 unsigned long BaseAddress1;
 885                 unsigned long IO_Address;
 886                 unsigned long PCI_Address;
 887
 888                 if (pci_enable_device(PCI_Device))
 889                         continue;
 890
 891                 if (pci_set_dma_mask(PCI_Device, DMA_32BIT_MASK))
 892                         continue;
 893
 894                 Bus = PCI_Device->bus->number;
 895                 Device = PCI_Device->devfn >> 3;
 896                 IRQ_Channel = PCI_Device->irq;
 897                 IO_Address = BaseAddress0 = pci_resource_start(PCI_Device, 0);
 898                 PCI_Address = BaseAddress1 = pci_resource_start(PCI_Device, 1);
 899 #ifdef CONFIG_SCSI_FLASHPOINT
 900                 if (pci_resource_flags(PCI_Device, 0) & IORESOURCE_MEM) {
 901                         BusLogic_Error("BusLogic: Base Address0 0x%X not I/O for " "FlashPoint Host Adapter\n", NULL, BaseAddress0);
 902                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 903                         continue;
 904                 }
 905                 if (pci_resource_flags(PCI_Device, 1) & IORESOURCE_IO) {
 906                         BusLogic_Error("BusLogic: Base Address1 0x%X not Memory for " "FlashPoint Host Adapter\n", NULL, BaseAddress1);
 907                         BusLogic_Error("at PCI Bus %d Device %d PCI Address 0x%X\n", NULL, Bus, Device, PCI_Address);
 908                         continue;
 909                 }
 910                 if (IRQ_Channel == 0) {
 911                         BusLogic_Error("BusLogic: IRQ Channel %d invalid for " "FlashPoint Host Adapter\n", NULL, IRQ_Channel);
 912                         BusLogic_Error("at PCI Bus %d Device %d I/O Address 0x%X\n", NULL, Bus, Device, IO_Address);
 913                         continue;
 914                 }
 915                 if (BusLogic_GlobalOptions.TraceProbe) {
 916                         BusLogic_Notice("BusLogic: FlashPoint Host Adapter " "detected at\n", NULL);
 917                         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);
 918                 }
 919                 if (BusLogic_ProbeInfoCount < BusLogic_MaxHostAdapters) {
 920                         struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[BusLogic_ProbeInfoCount++];
 921                         ProbeInfo->HostAdapterType = BusLogic_FlashPoint;
 922                         ProbeInfo->HostAdapterBusType = BusLogic_PCI_Bus;
 923                         ProbeInfo->IO_Address = IO_Address;
 924                         ProbeInfo->PCI_Address = PCI_Address;
 925                         ProbeInfo->Bus = Bus;
 926                         ProbeInfo->Device = Device;
 927                         ProbeInfo->IRQ_Channel = IRQ_Channel;
 928                         ProbeInfo->PCI_Device = pci_dev_get(PCI_Device);
 929                         FlashPointCount++;
 930                 } else
 931                         BusLogic_Warning("BusLogic: Too many Host Adapters " "detected\n", NULL);
 932 #else
 933                 BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", NULL, Bus, Device);
 934                 BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, irq %d, " "but FlashPoint\n", NULL, IO_Address, PCI_Address, IRQ_Channel);
 935                 BusLogic_Error("BusLogic: support was omitted in this kernel " "configuration.\n", NULL);
 936 #endif
 937         }
 938         /*
 939            The FlashPoint BIOS will scan for FlashPoint Host Adapters in the order of
 940            increasing PCI Bus and Device Number, so sort the probe information into
 941            the same order the BIOS uses.
 942          */
 943         BusLogic_SortProbeInfo(&BusLogic_ProbeInfoList[FlashPointIndex], FlashPointCount);
 944         return FlashPointCount;
 945 }
 946
 947
 948 /*
 949   BusLogic_InitializeProbeInfoList initializes the list of I/O Address and Bus
 950   Probe Information to be checked for potential BusLogic SCSI Host Adapters by
 951   interrogating the PCI Configuration Space on PCI machines as well as from the
 952   list of standard BusLogic MultiMaster ISA I/O Addresses.  By default, if both
 953   FlashPoint and PCI MultiMaster Host Adapters are present, this driver will
 954   probe for FlashPoint Host Adapters first unless the BIOS primary disk is
 955   controlled by the first PCI MultiMaster Host Adapter, in which case
 956   MultiMaster Host Adapters will be probed first.  The BusLogic Driver Options
 957   specifications "MultiMasterFirst" and "FlashPointFirst" can be used to force
 958   a particular probe order.
 959 */
 960
 961 static void __init BusLogic_InitializeProbeInfoList(struct BusLogic_HostAdapter
 962                                                     *PrototypeHostAdapter)
 963 {
 964         /*
 965            If a PCI BIOS is present, interrogate it for MultiMaster and FlashPoint
 966            Host Adapters; otherwise, default to the standard ISA MultiMaster probe.
 967          */
 968         if (!BusLogic_ProbeOptions.NoProbePCI) {
 969                 if (BusLogic_ProbeOptions.MultiMasterFirst) {
 970                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 971                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 972                 } else if (BusLogic_ProbeOptions.FlashPointFirst) {
 973                         BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 974                         BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 975                 } else {
 976                         int FlashPointCount = BusLogic_InitializeFlashPointProbeInfo(PrototypeHostAdapter);
 977                         int PCIMultiMasterCount = BusLogic_InitializeMultiMasterProbeInfo(PrototypeHostAdapter);
 978                         if (FlashPointCount > 0 && PCIMultiMasterCount > 0) {
 979                                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[FlashPointCount];
 980                                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
 981                                 struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
 982                                 struct BusLogic_BIOSDriveMapByte Drive0MapByte;
 983                                 while (ProbeInfo->HostAdapterBusType != BusLogic_PCI_Bus)
 984                                         ProbeInfo++;
 985                                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
 986                                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_BIOS_BaseOffset + BusLogic_BIOS_DriveMapOffset + 0;
 987                                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(Drive0MapByte);
 988                                 BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &Drive0MapByte, sizeof(Drive0MapByte));
 989                                 /*
 990                                    If the Map Byte for BIOS Drive 0 indicates that BIOS Drive 0
 991                                    is controlled by this PCI MultiMaster Host Adapter, then
 992                                    reverse the probe order so that MultiMaster Host Adapters are
 993                                    probed before FlashPoint Host Adapters.
 994                                  */
 995                                 if (Drive0MapByte.DiskGeometry != BusLogic_BIOS_Disk_Not_Installed) {
 996                                         struct BusLogic_ProbeInfo SavedProbeInfo[BusLogic_MaxHostAdapters];
 997                                         int MultiMasterCount = BusLogic_ProbeInfoCount - FlashPointCount;
 998                                         memcpy(SavedProbeInfo, BusLogic_ProbeInfoList, BusLogic_ProbeInfoCount * sizeof(struct BusLogic_ProbeInfo));
 999                                         memcpy(&BusLogic_ProbeInfoList[0], &SavedProbeInfo[FlashPointCount], MultiMasterCount * sizeof(struct BusLogic_ProbeInfo));
1000                                         memcpy(&BusLogic_ProbeInfoList[MultiMasterCount], &SavedProbeInfo[0], FlashPointCount * sizeof(struct BusLogic_ProbeInfo));
1001                                 }
1002                         }
1003                 }
1004         } else
1005                 BusLogic_InitializeProbeInfoListISA(PrototypeHostAdapter);
1006 }
1007
1008
1009 #else
1010 #define BusLogic_InitializeProbeInfoList(adapter) \
1011                 BusLogic_InitializeProbeInfoListISA(adapter)
1012 #endif                          /* CONFIG_PCI */
1013
1014
1015 /*
1016   BusLogic_Failure prints a standardized error message, and then returns false.
1017 */
1018
1019 static bool BusLogic_Failure(struct BusLogic_HostAdapter *HostAdapter, char *ErrorMessage)
1020 {
1021         BusLogic_AnnounceDriver(HostAdapter);
1022         if (HostAdapter->HostAdapterBusType == BusLogic_PCI_Bus) {
1023                 BusLogic_Error("While configuring BusLogic PCI Host Adapter at\n", HostAdapter);
1024                 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);
1025         } else
1026                 BusLogic_Error("While configuring BusLogic Host Adapter at " "I/O Address 0x%X:\n", HostAdapter, HostAdapter->IO_Address);
1027         BusLogic_Error("%s FAILED - DETACHING\n", HostAdapter, ErrorMessage);
1028         if (BusLogic_CommandFailureReason != NULL)
1029                 BusLogic_Error("ADDITIONAL FAILURE INFO - %s\n", HostAdapter, BusLogic_CommandFailureReason);
1030         return false;
1031 }
1032
1033
1034 /*
1035   BusLogic_ProbeHostAdapter probes for a BusLogic Host Adapter.
1036 */
1037
1038 static bool __init BusLogic_ProbeHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1039 {
1040         union BusLogic_StatusRegister StatusRegister;
1041         union BusLogic_InterruptRegister InterruptRegister;
1042         union BusLogic_GeometryRegister GeometryRegister;
1043         /*
1044            FlashPoint Host Adapters are Probed by the FlashPoint SCCB Manager.
1045          */
1046         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1047                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1048                 FlashPointInfo->BaseAddress = (u32) HostAdapter->IO_Address;
1049                 FlashPointInfo->IRQ_Channel = HostAdapter->IRQ_Channel;
1050                 FlashPointInfo->Present = false;
1051                 if (!(FlashPoint_ProbeHostAdapter(FlashPointInfo) == 0 && FlashPointInfo->Present)) {
1052                         BusLogic_Error("BusLogic: FlashPoint Host Adapter detected at " "PCI Bus %d Device %d\n", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1053                         BusLogic_Error("BusLogic: I/O Address 0x%X PCI Address 0x%X, " "but FlashPoint\n", HostAdapter, HostAdapter->IO_Address, HostAdapter->PCI_Address);
1054                         BusLogic_Error("BusLogic: Probe Function failed to validate it.\n", HostAdapter);
1055                         return false;
1056                 }
1057                 if (BusLogic_GlobalOptions.TraceProbe)
1058                         BusLogic_Notice("BusLogic_Probe(0x%X): FlashPoint Found\n", HostAdapter, HostAdapter->IO_Address);
1059                 /*
1060                    Indicate the Host Adapter Probe completed successfully.
1061                  */
1062                 return true;
1063         }
1064         /*
1065            Read the Status, Interrupt, and Geometry Registers to test if there are I/O
1066            ports that respond, and to check the values to determine if they are from a
1067            BusLogic Host Adapter.  A nonexistent I/O port will return 0xFF, in which
1068            case there is definitely no BusLogic Host Adapter at this base I/O Address.
1069            The test here is a subset of that used by the BusLogic Host Adapter BIOS.
1070          */
1071         StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1072         InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
1073         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1074         if (BusLogic_GlobalOptions.TraceProbe)
1075                 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);
1076         if (StatusRegister.All == 0 || StatusRegister.sr.DiagnosticActive || StatusRegister.sr.CommandParameterRegisterBusy || StatusRegister.sr.Reserved || StatusRegister.sr.CommandInvalid || InterruptRegister.ir.Reserved != 0)
1077                 return false;
1078         /*
1079            Check the undocumented Geometry Register to test if there is an I/O port
1080            that responded.  Adaptec Host Adapters do not implement the Geometry
1081            Register, so this test helps serve to avoid incorrectly recognizing an
1082            Adaptec 1542A or 1542B as a BusLogic.  Unfortunately, the Adaptec 1542C
1083            series does respond to the Geometry Register I/O port, but it will be
1084            rejected later when the Inquire Extended Setup Information command is
1085            issued in BusLogic_CheckHostAdapter.  The AMI FastDisk Host Adapter is a
1086            BusLogic clone that implements the same interface as earlier BusLogic
1087            Host Adapters, including the undocumented commands, and is therefore
1088            supported by this driver.  However, the AMI FastDisk always returns 0x00
1089            upon reading the Geometry Register, so the extended translation option
1090            should always be left disabled on the AMI FastDisk.
1091          */
1092         if (GeometryRegister.All == 0xFF)
1093                 return false;
1094         /*
1095            Indicate the Host Adapter Probe completed successfully.
1096          */
1097         return true;
1098 }
1099
1100
1101 /*
1102   BusLogic_HardwareResetHostAdapter issues a Hardware Reset to the Host Adapter
1103   and waits for Host Adapter Diagnostics to complete.  If HardReset is true, a
1104   Hard Reset is performed which also initiates a SCSI Bus Reset.  Otherwise, a
1105   Soft Reset is performed which only resets the Host Adapter without forcing a
1106   SCSI Bus Reset.
1107 */
1108
1109 static bool BusLogic_HardwareResetHostAdapter(struct BusLogic_HostAdapter
1110                                                  *HostAdapter, bool HardReset)
1111 {
1112         union BusLogic_StatusRegister StatusRegister;
1113         int TimeoutCounter;
1114         /*
1115            FlashPoint Host Adapters are Hard Reset by the FlashPoint SCCB Manager.
1116          */
1117         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1118                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1119                 FlashPointInfo->HostSoftReset = !HardReset;
1120                 FlashPointInfo->ReportDataUnderrun = true;
1121                 HostAdapter->CardHandle = FlashPoint_HardwareResetHostAdapter(FlashPointInfo);
1122                 if (HostAdapter->CardHandle == FlashPoint_BadCardHandle)
1123                         return false;
1124                 /*
1125                    Indicate the Host Adapter Hard Reset completed successfully.
1126                  */
1127                 return true;
1128         }
1129         /*
1130            Issue a Hard Reset or Soft Reset Command to the Host Adapter.  The Host
1131            Adapter should respond by setting Diagnostic Active in the Status Register.
1132          */
1133         if (HardReset)
1134                 BusLogic_HardReset(HostAdapter);
1135         else
1136                 BusLogic_SoftReset(HostAdapter);
1137         /*
1138            Wait until Diagnostic Active is set in the Status Register.
1139          */
1140         TimeoutCounter = 5 * 10000;
1141         while (--TimeoutCounter >= 0) {
1142                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1143                 if (StatusRegister.sr.DiagnosticActive)
1144                         break;
1145                 udelay(100);
1146         }
1147         if (BusLogic_GlobalOptions.TraceHardwareReset)
1148                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Active, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1149         if (TimeoutCounter < 0)
1150                 return false;
1151         /*
1152            Wait 100 microseconds to allow completion of any initial diagnostic
1153            activity which might leave the contents of the Status Register
1154            unpredictable.
1155          */
1156         udelay(100);
1157         /*
1158            Wait until Diagnostic Active is reset in the Status Register.
1159          */
1160         TimeoutCounter = 10 * 10000;
1161         while (--TimeoutCounter >= 0) {
1162                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1163                 if (!StatusRegister.sr.DiagnosticActive)
1164                         break;
1165                 udelay(100);
1166         }
1167         if (BusLogic_GlobalOptions.TraceHardwareReset)
1168                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Diagnostic Completed, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1169         if (TimeoutCounter < 0)
1170                 return false;
1171         /*
1172            Wait until at least one of the Diagnostic Failure, Host Adapter Ready,
1173            or Data In Register Ready bits is set in the Status Register.
1174          */
1175         TimeoutCounter = 10000;
1176         while (--TimeoutCounter >= 0) {
1177                 StatusRegister.All = BusLogic_ReadStatusRegister(HostAdapter);
1178                 if (StatusRegister.sr.DiagnosticFailure || StatusRegister.sr.HostAdapterReady || StatusRegister.sr.DataInRegisterReady)
1179                         break;
1180                 udelay(100);
1181         }
1182         if (BusLogic_GlobalOptions.TraceHardwareReset)
1183                 BusLogic_Notice("BusLogic_HardwareReset(0x%X): Host Adapter Ready, " "Status 0x%02X\n", HostAdapter, HostAdapter->IO_Address, StatusRegister.All);
1184         if (TimeoutCounter < 0)
1185                 return false;
1186         /*
1187            If Diagnostic Failure is set or Host Adapter Ready is reset, then an
1188            error occurred during the Host Adapter diagnostics.  If Data In Register
1189            Ready is set, then there is an Error Code available.
1190          */
1191         if (StatusRegister.sr.DiagnosticFailure || !StatusRegister.sr.HostAdapterReady) {
1192                 BusLogic_CommandFailureReason = NULL;
1193                 BusLogic_Failure(HostAdapter, "HARD RESET DIAGNOSTICS");
1194                 BusLogic_Error("HOST ADAPTER STATUS REGISTER = %02X\n", HostAdapter, StatusRegister.All);
1195                 if (StatusRegister.sr.DataInRegisterReady) {
1196                         unsigned char ErrorCode = BusLogic_ReadDataInRegister(HostAdapter);
1197                         BusLogic_Error("HOST ADAPTER ERROR CODE = %d\n", HostAdapter, ErrorCode);
1198                 }
1199                 return false;
1200         }
1201         /*
1202            Indicate the Host Adapter Hard Reset completed successfully.
1203          */
1204         return true;
1205 }
1206
1207
1208 /*
1209   BusLogic_CheckHostAdapter checks to be sure this really is a BusLogic
1210   Host Adapter.
1211 */
1212
1213 static bool __init BusLogic_CheckHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
1214 {
1215         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1216         unsigned char RequestedReplyLength;
1217         bool Result = true;
1218         /*
1219            FlashPoint Host Adapters do not require this protection.
1220          */
1221         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1222                 return true;
1223         /*
1224            Issue the Inquire Extended Setup Information command.  Only genuine
1225            BusLogic Host Adapters and true clones support this command.  Adaptec 1542C
1226            series Host Adapters that respond to the Geometry Register I/O port will
1227            fail this command.
1228          */
1229         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1230         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1231             != sizeof(ExtendedSetupInformation))
1232                 Result = false;
1233         /*
1234            Provide tracing information if requested and return.
1235          */
1236         if (BusLogic_GlobalOptions.TraceProbe)
1237                 BusLogic_Notice("BusLogic_Check(0x%X): MultiMaster %s\n", HostAdapter, HostAdapter->IO_Address, (Result ? "Found" : "Not Found"));
1238         return Result;
1239 }
1240
1241
1242 /*
1243   BusLogic_ReadHostAdapterConfiguration reads the Configuration Information
1244   from Host Adapter and initializes the Host Adapter structure.
1245 */
1246
1247 static bool __init BusLogic_ReadHostAdapterConfiguration(struct BusLogic_HostAdapter
1248                                                             *HostAdapter)
1249 {
1250         struct BusLogic_BoardID BoardID;
1251         struct BusLogic_Configuration Configuration;
1252         struct BusLogic_SetupInformation SetupInformation;
1253         struct BusLogic_ExtendedSetupInformation ExtendedSetupInformation;
1254         unsigned char HostAdapterModelNumber[5];
1255         unsigned char FirmwareVersion3rdDigit;
1256         unsigned char FirmwareVersionLetter;
1257         struct BusLogic_PCIHostAdapterInformation PCIHostAdapterInformation;
1258         struct BusLogic_FetchHostAdapterLocalRAMRequest FetchHostAdapterLocalRAMRequest;
1259         struct BusLogic_AutoSCSIData AutoSCSIData;
1260         union BusLogic_GeometryRegister GeometryRegister;
1261         unsigned char RequestedReplyLength;
1262         unsigned char *TargetPointer, Character;
1263         int TargetID, i;
1264         /*
1265            Configuration Information for FlashPoint Host Adapters is provided in the
1266            FlashPoint_Info structure by the FlashPoint SCCB Manager's Probe Function.
1267            Initialize fields in the Host Adapter structure from the FlashPoint_Info
1268            structure.
1269          */
1270         if (BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1271                 struct FlashPoint_Info *FlashPointInfo = &HostAdapter->FlashPointInfo;
1272                 TargetPointer = HostAdapter->ModelName;
1273                 *TargetPointer++ = 'B';
1274                 *TargetPointer++ = 'T';
1275                 *TargetPointer++ = '-';
1276                 for (i = 0; i < sizeof(FlashPointInfo->ModelNumber); i++)
1277                         *TargetPointer++ = FlashPointInfo->ModelNumber[i];
1278                 *TargetPointer++ = '\0';
1279                 strcpy(HostAdapter->FirmwareVersion, FlashPoint_FirmwareVersion);
1280                 HostAdapter->SCSI_ID = FlashPointInfo->SCSI_ID;
1281                 HostAdapter->ExtendedTranslationEnabled = FlashPointInfo->ExtendedTranslationEnabled;
1282                 HostAdapter->ParityCheckingEnabled = FlashPointInfo->ParityCheckingEnabled;
1283                 HostAdapter->BusResetEnabled = !FlashPointInfo->HostSoftReset;
1284                 HostAdapter->LevelSensitiveInterrupt = true;
1285                 HostAdapter->HostWideSCSI = FlashPointInfo->HostWideSCSI;
1286                 HostAdapter->HostDifferentialSCSI = false;
1287                 HostAdapter->HostSupportsSCAM = true;
1288                 HostAdapter->HostUltraSCSI = true;
1289                 HostAdapter->ExtendedLUNSupport = true;
1290                 HostAdapter->TerminationInfoValid = true;
1291                 HostAdapter->LowByteTerminated = FlashPointInfo->LowByteTerminated;
1292                 HostAdapter->HighByteTerminated = FlashPointInfo->HighByteTerminated;
1293                 HostAdapter->SCAM_Enabled = FlashPointInfo->SCAM_Enabled;
1294                 HostAdapter->SCAM_Level2 = FlashPointInfo->SCAM_Level2;
1295                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1296                 HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1297                 HostAdapter->MaxLogicalUnits = 32;
1298                 HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1299                 HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1300                 HostAdapter->DriverQueueDepth = 255;
1301                 HostAdapter->HostAdapterQueueDepth = HostAdapter->DriverQueueDepth;
1302                 HostAdapter->SynchronousPermitted = FlashPointInfo->SynchronousPermitted;
1303                 HostAdapter->FastPermitted = FlashPointInfo->FastPermitted;
1304                 HostAdapter->UltraPermitted = FlashPointInfo->UltraPermitted;
1305                 HostAdapter->WidePermitted = FlashPointInfo->WidePermitted;
1306                 HostAdapter->DisconnectPermitted = FlashPointInfo->DisconnectPermitted;
1307                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1308                 goto Common;
1309         }
1310         /*
1311            Issue the Inquire Board ID command.
1312          */
1313         if (BusLogic_Command(HostAdapter, BusLogic_InquireBoardID, NULL, 0, &BoardID, sizeof(BoardID)) != sizeof(BoardID))
1314                 return BusLogic_Failure(HostAdapter, "INQUIRE BOARD ID");
1315         /*
1316            Issue the Inquire Configuration command.
1317          */
1318         if (BusLogic_Command(HostAdapter, BusLogic_InquireConfiguration, NULL, 0, &Configuration, sizeof(Configuration))
1319             != sizeof(Configuration))
1320                 return BusLogic_Failure(HostAdapter, "INQUIRE CONFIGURATION");
1321         /*
1322            Issue the Inquire Setup Information command.
1323          */
1324         RequestedReplyLength = sizeof(SetupInformation);
1325         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
1326             != sizeof(SetupInformation))
1327                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
1328         /*
1329            Issue the Inquire Extended Setup Information command.
1330          */
1331         RequestedReplyLength = sizeof(ExtendedSetupInformation);
1332         if (BusLogic_Command(HostAdapter, BusLogic_InquireExtendedSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &ExtendedSetupInformation, sizeof(ExtendedSetupInformation))
1333             != sizeof(ExtendedSetupInformation))
1334                 return BusLogic_Failure(HostAdapter, "INQUIRE EXTENDED SETUP INFORMATION");
1335         /*
1336            Issue the Inquire Firmware Version 3rd Digit command.
1337          */
1338         FirmwareVersion3rdDigit = '\0';
1339         if (BoardID.FirmwareVersion1stDigit > '0')
1340                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersion3rdDigit, NULL, 0, &FirmwareVersion3rdDigit, sizeof(FirmwareVersion3rdDigit))
1341                     != sizeof(FirmwareVersion3rdDigit))
1342                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE 3RD DIGIT");
1343         /*
1344            Issue the Inquire Host Adapter Model Number command.
1345          */
1346         if (ExtendedSetupInformation.BusType == 'A' && BoardID.FirmwareVersion1stDigit == '2')
1347                 /* BusLogic BT-542B ISA 2.xx */
1348                 strcpy(HostAdapterModelNumber, "542B");
1349         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '2' && (BoardID.FirmwareVersion2ndDigit <= '1' || (BoardID.FirmwareVersion2ndDigit == '2' && FirmwareVersion3rdDigit == '0')))
1350                 /* BusLogic BT-742A EISA 2.1x or 2.20 */
1351                 strcpy(HostAdapterModelNumber, "742A");
1352         else if (ExtendedSetupInformation.BusType == 'E' && BoardID.FirmwareVersion1stDigit == '0')
1353                 /* AMI FastDisk EISA Series 441 0.x */
1354                 strcpy(HostAdapterModelNumber, "747A");
1355         else {
1356                 RequestedReplyLength = sizeof(HostAdapterModelNumber);
1357                 if (BusLogic_Command(HostAdapter, BusLogic_InquireHostAdapterModelNumber, &RequestedReplyLength, sizeof(RequestedReplyLength), &HostAdapterModelNumber, sizeof(HostAdapterModelNumber))
1358                     != sizeof(HostAdapterModelNumber))
1359                         return BusLogic_Failure(HostAdapter, "INQUIRE HOST ADAPTER MODEL NUMBER");
1360         }
1361         /*
1362            BusLogic MultiMaster Host Adapters can be identified by their model number
1363            and the major version number of their firmware as follows:
1364
1365            5.xx       BusLogic "W" Series Host Adapters:
1366            BT-948/958/958D
1367            4.xx       BusLogic "C" Series Host Adapters:
1368            BT-946C/956C/956CD/747C/757C/757CD/445C/545C/540CF
1369            3.xx       BusLogic "S" Series Host Adapters:
1370            BT-747S/747D/757S/757D/445S/545S/542D
1371            BT-542B/742A (revision H)
1372            2.xx       BusLogic "A" Series Host Adapters:
1373            BT-542B/742A (revision G and below)
1374            0.xx       AMI FastDisk VLB/EISA BusLogic Clone Host Adapter
1375          */
1376         /*
1377            Save the Model Name and Host Adapter Name in the Host Adapter structure.
1378          */
1379         TargetPointer = HostAdapter->ModelName;
1380         *TargetPointer++ = 'B';
1381         *TargetPointer++ = 'T';
1382         *TargetPointer++ = '-';
1383         for (i = 0; i < sizeof(HostAdapterModelNumber); i++) {
1384                 Character = HostAdapterModelNumber[i];
1385                 if (Character == ' ' || Character == '\0')
1386                         break;
1387                 *TargetPointer++ = Character;
1388         }
1389         *TargetPointer++ = '\0';
1390         /*
1391            Save the Firmware Version in the Host Adapter structure.
1392          */
1393         TargetPointer = HostAdapter->FirmwareVersion;
1394         *TargetPointer++ = BoardID.FirmwareVersion1stDigit;
1395         *TargetPointer++ = '.';
1396         *TargetPointer++ = BoardID.FirmwareVersion2ndDigit;
1397         if (FirmwareVersion3rdDigit != ' ' && FirmwareVersion3rdDigit != '\0')
1398                 *TargetPointer++ = FirmwareVersion3rdDigit;
1399         *TargetPointer = '\0';
1400         /*
1401            Issue the Inquire Firmware Version Letter command.
1402          */
1403         if (strcmp(HostAdapter->FirmwareVersion, "3.3") >= 0) {
1404                 if (BusLogic_Command(HostAdapter, BusLogic_InquireFirmwareVersionLetter, NULL, 0, &FirmwareVersionLetter, sizeof(FirmwareVersionLetter))
1405                     != sizeof(FirmwareVersionLetter))
1406                         return BusLogic_Failure(HostAdapter, "INQUIRE FIRMWARE VERSION LETTER");
1407                 if (FirmwareVersionLetter != ' ' && FirmwareVersionLetter != '\0')
1408                         *TargetPointer++ = FirmwareVersionLetter;
1409                 *TargetPointer = '\0';
1410         }
1411         /*
1412            Save the Host Adapter SCSI ID in the Host Adapter structure.
1413          */
1414         HostAdapter->SCSI_ID = Configuration.HostAdapterID;
1415         /*
1416            Determine the Bus Type and save it in the Host Adapter structure, determine
1417            and save the IRQ Channel if necessary, and determine and save the DMA
1418            Channel for ISA Host Adapters.
1419          */
1420         HostAdapter->HostAdapterBusType = BusLogic_HostAdapterBusTypes[HostAdapter->ModelName[3] - '4'];
1421         if (HostAdapter->IRQ_Channel == 0) {
1422                 if (Configuration.IRQ_Channel9)
1423                         HostAdapter->IRQ_Channel = 9;
1424                 else if (Configuration.IRQ_Channel10)
1425                         HostAdapter->IRQ_Channel = 10;
1426                 else if (Configuration.IRQ_Channel11)
1427                         HostAdapter->IRQ_Channel = 11;
1428                 else if (Configuration.IRQ_Channel12)
1429                         HostAdapter->IRQ_Channel = 12;
1430                 else if (Configuration.IRQ_Channel14)
1431                         HostAdapter->IRQ_Channel = 14;
1432                 else if (Configuration.IRQ_Channel15)
1433                         HostAdapter->IRQ_Channel = 15;
1434         }
1435         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus) {
1436                 if (Configuration.DMA_Channel5)
1437                         HostAdapter->DMA_Channel = 5;
1438                 else if (Configuration.DMA_Channel6)
1439                         HostAdapter->DMA_Channel = 6;
1440                 else if (Configuration.DMA_Channel7)
1441                         HostAdapter->DMA_Channel = 7;
1442         }
1443         /*
1444            Determine whether Extended Translation is enabled and save it in
1445            the Host Adapter structure.
1446          */
1447         GeometryRegister.All = BusLogic_ReadGeometryRegister(HostAdapter);
1448         HostAdapter->ExtendedTranslationEnabled = GeometryRegister.gr.ExtendedTranslationEnabled;
1449         /*
1450            Save the Scatter Gather Limits, Level Sensitive Interrupt flag, Wide
1451            SCSI flag, Differential SCSI flag, SCAM Supported flag, and
1452            Ultra SCSI flag in the Host Adapter structure.
1453          */
1454         HostAdapter->HostAdapterScatterGatherLimit = ExtendedSetupInformation.ScatterGatherLimit;
1455         HostAdapter->DriverScatterGatherLimit = HostAdapter->HostAdapterScatterGatherLimit;
1456         if (HostAdapter->HostAdapterScatterGatherLimit > BusLogic_ScatterGatherLimit)
1457                 HostAdapter->DriverScatterGatherLimit = BusLogic_ScatterGatherLimit;
1458         if (ExtendedSetupInformation.Misc.LevelSensitiveInterrupt)
1459                 HostAdapter->LevelSensitiveInterrupt = true;
1460         HostAdapter->HostWideSCSI = ExtendedSetupInformation.HostWideSCSI;
1461         HostAdapter->HostDifferentialSCSI = ExtendedSetupInformation.HostDifferentialSCSI;
1462         HostAdapter->HostSupportsSCAM = ExtendedSetupInformation.HostSupportsSCAM;
1463         HostAdapter->HostUltraSCSI = ExtendedSetupInformation.HostUltraSCSI;
1464         /*
1465            Determine whether Extended LUN Format CCBs are supported and save the
1466            information in the Host Adapter structure.
1467          */
1468         if (HostAdapter->FirmwareVersion[0] == '5' || (HostAdapter->FirmwareVersion[0] == '4' && HostAdapter->HostWideSCSI))
1469                 HostAdapter->ExtendedLUNSupport = true;
1470         /*
1471            Issue the Inquire PCI Host Adapter Information command to read the
1472            Termination Information from "W" series MultiMaster Host Adapters.
1473          */
1474         if (HostAdapter->FirmwareVersion[0] == '5') {
1475                 if (BusLogic_Command(HostAdapter, BusLogic_InquirePCIHostAdapterInformation, NULL, 0, &PCIHostAdapterInformation, sizeof(PCIHostAdapterInformation))
1476                     != sizeof(PCIHostAdapterInformation))
1477                         return BusLogic_Failure(HostAdapter, "INQUIRE PCI HOST ADAPTER INFORMATION");
1478                 /*
1479                    Save the Termination Information in the Host Adapter structure.
1480                  */
1481                 if (PCIHostAdapterInformation.GenericInfoValid) {
1482                         HostAdapter->TerminationInfoValid = true;
1483                         HostAdapter->LowByteTerminated = PCIHostAdapterInformation.LowByteTerminated;
1484                         HostAdapter->HighByteTerminated = PCIHostAdapterInformation.HighByteTerminated;
1485                 }
1486         }
1487         /*
1488            Issue the Fetch Host Adapter Local RAM command to read the AutoSCSI data
1489            from "W" and "C" series MultiMaster Host Adapters.
1490          */
1491         if (HostAdapter->FirmwareVersion[0] >= '4') {
1492                 FetchHostAdapterLocalRAMRequest.ByteOffset = BusLogic_AutoSCSI_BaseOffset;
1493                 FetchHostAdapterLocalRAMRequest.ByteCount = sizeof(AutoSCSIData);
1494                 if (BusLogic_Command(HostAdapter, BusLogic_FetchHostAdapterLocalRAM, &FetchHostAdapterLocalRAMRequest, sizeof(FetchHostAdapterLocalRAMRequest), &AutoSCSIData, sizeof(AutoSCSIData))
1495                     != sizeof(AutoSCSIData))
1496                         return BusLogic_Failure(HostAdapter, "FETCH HOST ADAPTER LOCAL RAM");
1497                 /*
1498                    Save the Parity Checking Enabled, Bus Reset Enabled, and Termination
1499                    Information in the Host Adapter structure.
1500                  */
1501                 HostAdapter->ParityCheckingEnabled = AutoSCSIData.ParityCheckingEnabled;
1502                 HostAdapter->BusResetEnabled = AutoSCSIData.BusResetEnabled;
1503                 if (HostAdapter->FirmwareVersion[0] == '4') {
1504                         HostAdapter->TerminationInfoValid = true;
1505                         HostAdapter->LowByteTerminated = AutoSCSIData.LowByteTerminated;
1506                         HostAdapter->HighByteTerminated = AutoSCSIData.HighByteTerminated;
1507                 }
1508                 /*
1509                    Save the Wide Permitted, Fast Permitted, Synchronous Permitted,
1510                    Disconnect Permitted, Ultra Permitted, and SCAM Information in the
1511                    Host Adapter structure.
1512                  */
1513                 HostAdapter->WidePermitted = AutoSCSIData.WidePermitted;
1514                 HostAdapter->FastPermitted = AutoSCSIData.FastPermitted;
1515                 HostAdapter->SynchronousPermitted = AutoSCSIData.SynchronousPermitted;
1516                 HostAdapter->DisconnectPermitted = AutoSCSIData.DisconnectPermitted;
1517                 if (HostAdapter->HostUltraSCSI)
1518                         HostAdapter->UltraPermitted = AutoSCSIData.UltraPermitted;
1519                 if (HostAdapter->HostSupportsSCAM) {
1520                         HostAdapter->SCAM_Enabled = AutoSCSIData.SCAM_Enabled;
1521                         HostAdapter->SCAM_Level2 = AutoSCSIData.SCAM_Level2;
1522                 }
1523         }
1524         /*
1525            Initialize fields in the Host Adapter structure for "S" and "A" series
1526            MultiMaster Host Adapters.
1527          */
1528         if (HostAdapter->FirmwareVersion[0] < '4') {
1529                 if (SetupInformation.SynchronousInitiationEnabled) {
1530                         HostAdapter->SynchronousPermitted = 0xFF;
1531                         if (HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus) {
1532                                 if (ExtendedSetupInformation.Misc.FastOnEISA)
1533                                         HostAdapter->FastPermitted = 0xFF;
1534                                 if (strcmp(HostAdapter->ModelName, "BT-757") == 0)
1535                                         HostAdapter->WidePermitted = 0xFF;
1536                         }
1537                 }
1538                 HostAdapter->DisconnectPermitted = 0xFF;
1539                 HostAdapter->ParityCheckingEnabled = SetupInformation.ParityCheckingEnabled;
1540                 HostAdapter->BusResetEnabled = true;
1541         }
1542         /*
1543            Determine the maximum number of Target IDs and Logical Units supported by
1544            this driver for Wide and Narrow Host Adapters.
1545          */
1546         HostAdapter->MaxTargetDevices = (HostAdapter->HostWideSCSI ? 16 : 8);
1547         HostAdapter->MaxLogicalUnits = (HostAdapter->ExtendedLUNSupport ? 32 : 8);
1548         /*
1549            Select appropriate values for the Mailbox Count, Driver Queue Depth,
1550            Initial CCBs, and Incremental CCBs variables based on whether or not Strict
1551            Round Robin Mode is supported.  If Strict Round Robin Mode is supported,
1552            then there is no performance degradation in using the maximum possible
1553            number of Outgoing and Incoming Mailboxes and allowing the Tagged and
1554            Untagged Queue Depths to determine the actual utilization.  If Strict Round
1555            Robin Mode is not supported, then the Host Adapter must scan all the
1556            Outgoing Mailboxes whenever an Outgoing Mailbox entry is made, which can
1557            cause a substantial performance penalty.  The host adapters actually have
1558            room to store the following number of CCBs internally; that is, they can
1559            internally queue and manage this many active commands on the SCSI bus
1560            simultaneously.  Performance measurements demonstrate that the Driver Queue
1561            Depth should be set to the Mailbox Count, rather than the Host Adapter
1562            Queue Depth (internal CCB capacity), as it is more efficient to have the
1563            queued commands waiting in Outgoing Mailboxes if necessary than to block
1564            the process in the higher levels of the SCSI Subsystem.
1565
1566            192          BT-948/958/958D
1567            100          BT-946C/956C/956CD/747C/757C/757CD/445C
1568            50   BT-545C/540CF
1569            30   BT-747S/747D/757S/757D/445S/545S/542D/542B/742A
1570          */
1571         if (HostAdapter->FirmwareVersion[0] == '5')
1572                 HostAdapter->HostAdapterQueueDepth = 192;
1573         else if (HostAdapter->FirmwareVersion[0] == '4')
1574                 HostAdapter->HostAdapterQueueDepth = (HostAdapter->HostAdapterBusType != BusLogic_ISA_Bus ? 100 : 50);
1575         else
1576                 HostAdapter->HostAdapterQueueDepth = 30;
1577         if (strcmp(HostAdapter->FirmwareVersion, "3.31") >= 0) {
1578                 HostAdapter->StrictRoundRobinModeSupport = true;
1579                 HostAdapter->MailboxCount = BusLogic_MaxMailboxes;
1580         } else {
1581                 HostAdapter->StrictRoundRobinModeSupport = false;
1582                 HostAdapter->MailboxCount = 32;
1583         }
1584         HostAdapter->DriverQueueDepth = HostAdapter->MailboxCount;
1585         HostAdapter->InitialCCBs = 4 * BusLogic_CCB_AllocationGroupSize;
1586         HostAdapter->IncrementalCCBs = BusLogic_CCB_AllocationGroupSize;
1587         /*
1588            Tagged Queuing support is available and operates properly on all "W" series
1589            MultiMaster Host Adapters, on "C" series MultiMaster Host Adapters with
1590            firmware version 4.22 and above, and on "S" series MultiMaster Host
1591            Adapters with firmware version 3.35 and above.
1592          */
1593         HostAdapter->TaggedQueuingPermitted = 0;
1594         switch (HostAdapter->FirmwareVersion[0]) {
1595         case '5':
1596                 HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1597                 break;
1598         case '4':
1599                 if (strcmp(HostAdapter->FirmwareVersion, "4.22") >= 0)
1600                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1601                 break;
1602         case '3':
1603                 if (strcmp(HostAdapter->FirmwareVersion, "3.35") >= 0)
1604                         HostAdapter->TaggedQueuingPermitted = 0xFFFF;
1605                 break;
1606         }
1607         /*
1608            Determine the Host Adapter BIOS Address if the BIOS is enabled and
1609            save it in the Host Adapter structure.  The BIOS is disabled if the
1610            BIOS_Address is 0.
1611          */
1612         HostAdapter->BIOS_Address = ExtendedSetupInformation.BIOS_Address << 12;
1613         /*
1614            ISA Host Adapters require Bounce Buffers if there is more than 16MB memory.
1615          */
1616         if (HostAdapter->HostAdapterBusType == BusLogic_ISA_Bus && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1617                 HostAdapter->BounceBuffersRequired = true;
1618         /*
1619            BusLogic BT-445S Host Adapters prior to board revision E have a hardware
1620            bug whereby when the BIOS is enabled, transfers to/from the same address
1621            range the BIOS occupies modulo 16MB are handled incorrectly.  Only properly
1622            functioning BT-445S Host Adapters have firmware version 3.37, so require
1623            that ISA Bounce Buffers be used for the buggy BT-445S models if there is
1624            more than 16MB memory.
1625          */
1626         if (HostAdapter->BIOS_Address > 0 && strcmp(HostAdapter->ModelName, "BT-445S") == 0 && strcmp(HostAdapter->FirmwareVersion, "3.37") < 0 && (void *) high_memory > (void *) MAX_DMA_ADDRESS)
1627                 HostAdapter->BounceBuffersRequired = true;
1628         /*
1629            Initialize parameters common to MultiMaster and FlashPoint Host Adapters.
1630          */
1631       Common:
1632         /*
1633            Initialize the Host Adapter Full Model Name from the Model Name.
1634          */
1635         strcpy(HostAdapter->FullModelName, "BusLogic ");
1636         strcat(HostAdapter->FullModelName, HostAdapter->ModelName);
1637         /*
1638            Select an appropriate value for the Tagged Queue Depth either from a
1639            BusLogic Driver Options specification, or based on whether this Host
1640            Adapter requires that ISA Bounce Buffers be used.  The Tagged Queue Depth
1641            is left at 0 for automatic determination in BusLogic_SelectQueueDepths.
1642            Initialize the Untagged Queue Depth.
1643          */
1644         for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
1645                 unsigned char QueueDepth = 0;
1646                 if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->QueueDepth[TargetID] > 0)
1647                         QueueDepth = HostAdapter->DriverOptions->QueueDepth[TargetID];
1648                 else if (HostAdapter->BounceBuffersRequired)
1649                         QueueDepth = BusLogic_TaggedQueueDepthBB;
1650                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
1651         }
1652         if (HostAdapter->BounceBuffersRequired)
1653                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepthBB;
1654         else
1655                 HostAdapter->UntaggedQueueDepth = BusLogic_UntaggedQueueDepth;
1656         if (HostAdapter->DriverOptions != NULL)
1657                 HostAdapter->CommonQueueDepth = HostAdapter->DriverOptions->CommonQueueDepth;
1658         if (HostAdapter->CommonQueueDepth > 0 && HostAdapter->CommonQueueDepth < HostAdapter->UntaggedQueueDepth)
1659                 HostAdapter->UntaggedQueueDepth = HostAdapter->CommonQueueDepth;
1660         /*
1661            Tagged Queuing is only allowed if Disconnect/Reconnect is permitted.
1662            Therefore, mask the Tagged Queuing Permitted Default bits with the
1663            Disconnect/Reconnect Permitted bits.
1664          */
1665         HostAdapter->TaggedQueuingPermitted &= HostAdapter->DisconnectPermitted;
1666         /*
1667            Combine the default Tagged Queuing Permitted bits with any BusLogic Driver
1668            Options Tagged Queuing specification.
1669          */
1670         if (HostAdapter->DriverOptions != NULL)
1671                 HostAdapter->TaggedQueuingPermitted =
1672                     (HostAdapter->DriverOptions->TaggedQueuingPermitted & HostAdapter->DriverOptions->TaggedQueuingPermittedMask) | (HostAdapter->TaggedQueuingPermitted & ~HostAdapter->DriverOptions->TaggedQueuingPermittedMask);
1673
1674         /*
1675            Select an appropriate value for Bus Settle Time either from a BusLogic
1676            Driver Options specification, or from BusLogic_DefaultBusSettleTime.
1677          */
1678         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->BusSettleTime > 0)
1679                 HostAdapter->BusSettleTime = HostAdapter->DriverOptions->BusSettleTime;
1680         else
1681                 HostAdapter->BusSettleTime = BusLogic_DefaultBusSettleTime;
1682         /*
1683            Indicate reading the Host Adapter Configuration completed successfully.
1684          */
1685         return true;
1686 }
1687
1688
1689 /*
1690   BusLogic_ReportHostAdapterConfiguration reports the configuration of
1691   Host Adapter.
1692 */
1693
1694 static bool __init BusLogic_ReportHostAdapterConfiguration(struct BusLogic_HostAdapter
1695                                                               *HostAdapter)
1696 {
1697         unsigned short AllTargetsMask = (1 << HostAdapter->MaxTargetDevices) - 1;
1698         unsigned short SynchronousPermitted, FastPermitted;
1699         unsigned short UltraPermitted, WidePermitted;
1700         unsigned short DisconnectPermitted, TaggedQueuingPermitted;
1701         bool CommonSynchronousNegotiation, CommonTaggedQueueDepth;
1702         char SynchronousString[BusLogic_MaxTargetDevices + 1];
1703         char WideString[BusLogic_MaxTargetDevices + 1];
1704         char DisconnectString[BusLogic_MaxTargetDevices + 1];
1705         char TaggedQueuingString[BusLogic_MaxTargetDevices + 1];
1706         char *SynchronousMessage = SynchronousString;
1707         char *WideMessage = WideString;
1708         char *DisconnectMessage = DisconnectString;
1709         char *TaggedQueuingMessage = TaggedQueuingString;
1710         int TargetID;
1711         BusLogic_Info("Configuring BusLogic Model %s %s%s%s%s SCSI Host Adapter\n",
1712                       HostAdapter, HostAdapter->ModelName,
1713                       BusLogic_HostAdapterBusNames[HostAdapter->HostAdapterBusType], (HostAdapter->HostWideSCSI ? " Wide" : ""), (HostAdapter->HostDifferentialSCSI ? " Differential" : ""), (HostAdapter->HostUltraSCSI ? " Ultra" : ""));
1714         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"));
1715         if (HostAdapter->HostAdapterBusType != BusLogic_PCI_Bus) {
1716                 BusLogic_Info("  DMA Channel: ", HostAdapter);
1717                 if (HostAdapter->DMA_Channel > 0)
1718                         BusLogic_Info("%d, ", HostAdapter, HostAdapter->DMA_Channel);
1719                 else
1720                         BusLogic_Info("None, ", HostAdapter);
1721                 if (HostAdapter->BIOS_Address > 0)
1722                         BusLogic_Info("BIOS Address: 0x%X, ", HostAdapter, HostAdapter->BIOS_Address);
1723                 else
1724                         BusLogic_Info("BIOS Address: None, ", HostAdapter);
1725         } else {
1726                 BusLogic_Info("  PCI Bus: %d, Device: %d, Address: ", HostAdapter, HostAdapter->Bus, HostAdapter->Device);
1727                 if (HostAdapter->PCI_Address > 0)
1728                         BusLogic_Info("0x%X, ", HostAdapter, HostAdapter->PCI_Address);
1729                 else
1730                         BusLogic_Info("Unassigned, ", HostAdapter);
1731         }
1732         BusLogic_Info("Host Adapter SCSI ID: %d\n", HostAdapter, HostAdapter->SCSI_ID);
1733         BusLogic_Info("  Parity Checking: %s, Extended Translation: %s\n", HostAdapter, (HostAdapter->ParityCheckingEnabled ? "Enabled" : "Disabled"), (HostAdapter->ExtendedTranslationEnabled ? "Enabled" : "Disabled"));
1734         AllTargetsMask &= ~(1 << HostAdapter->SCSI_ID);
1735         SynchronousPermitted = HostAdapter->SynchronousPermitted & AllTargetsMask;
1736         FastPermitted = HostAdapter->FastPermitted & AllTargetsMask;
1737         UltraPermitted = HostAdapter->UltraPermitted & AllTargetsMask;
1738         if ((BusLogic_MultiMasterHostAdapterP(HostAdapter) && (HostAdapter->FirmwareVersion[0] >= '4' || HostAdapter->HostAdapterBusType == BusLogic_EISA_Bus)) || BusLogic_FlashPointHostAdapterP(HostAdapter)) {
1739                 CommonSynchronousNegotiation = false;
1740                 if (SynchronousPermitted == 0) {
1741                         SynchronousMessage = "Disabled";
1742                         CommonSynchronousNegotiation = true;
1743                 } else if (SynchronousPermitted == AllTargetsMask) {
1744                         if (FastPermitted == 0) {
1745                                 SynchronousMessage = "Slow";
1746                                 CommonSynchronousNegotiation = true;
1747                         } else if (FastPermitted == AllTargetsMask) {
1748                                 if (UltraPermitted == 0) {
1749                                         SynchronousMessage = "Fast";
1750                                         CommonSynchronousNegotiation = true;
1751                                 } else if (UltraPermitted == AllTargetsMask) {
1752                                         SynchronousMessage = "Ultra";
1753                                         CommonSynchronousNegotiation = true;
1754                                 }
1755                         }
1756                 }
1757                 if (!CommonSynchronousNegotiation) {
1758                         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1759                                 SynchronousString[TargetID] = ((!(SynchronousPermitted & (1 << TargetID))) ? 'N' : (!(FastPermitted & (1 << TargetID)) ? 'S' : (!(UltraPermitted & (1 << TargetID)) ? 'F' : 'U')));
1760                         SynchronousString[HostAdapter->SCSI_ID] = '#';
1761                         SynchronousString[HostAdapter->MaxTargetDevices] = '\0';
1762                 }
1763         } else
1764                 SynchronousMessage = (SynchronousPermitted == 0 ? "Disabled" : "Enabled");
1765         WidePermitted = HostAdapter->WidePermitted & AllTargetsMask;
1766         if (WidePermitted == 0)
1767                 WideMessage = "Disabled";
1768         else if (WidePermitted == AllTargetsMask)
1769                 WideMessage = "Enabled";
1770         else {
1771                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1772                         WideString[TargetID] = ((WidePermitted & (1 << TargetID)) ? 'Y' : 'N');
1773                 WideString[HostAdapter->SCSI_ID] = '#';
1774                 WideString[HostAdapter->MaxTargetDevices] = '\0';
1775         }
1776         DisconnectPermitted = HostAdapter->DisconnectPermitted & AllTargetsMask;
1777         if (DisconnectPermitted == 0)
1778                 DisconnectMessage = "Disabled";
1779         else if (DisconnectPermitted == AllTargetsMask)
1780                 DisconnectMessage = "Enabled";
1781         else {
1782                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1783                         DisconnectString[TargetID] = ((DisconnectPermitted & (1 << TargetID)) ? 'Y' : 'N');
1784                 DisconnectString[HostAdapter->SCSI_ID] = '#';
1785                 DisconnectString[HostAdapter->MaxTargetDevices] = '\0';
1786         }
1787         TaggedQueuingPermitted = HostAdapter->TaggedQueuingPermitted & AllTargetsMask;
1788         if (TaggedQueuingPermitted == 0)
1789                 TaggedQueuingMessage = "Disabled";
1790         else if (TaggedQueuingPermitted == AllTargetsMask)
1791                 TaggedQueuingMessage = "Enabled";
1792         else {
1793                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1794                         TaggedQueuingString[TargetID] = ((TaggedQueuingPermitted & (1 << TargetID)) ? 'Y' : 'N');
1795                 TaggedQueuingString[HostAdapter->SCSI_ID] = '#';
1796                 TaggedQueuingString[HostAdapter->MaxTargetDevices] = '\0';
1797         }
1798         BusLogic_Info("  Synchronous Negotiation: %s, Wide Negotiation: %s\n", HostAdapter, SynchronousMessage, WideMessage);
1799         BusLogic_Info("  Disconnect/Reconnect: %s, Tagged Queuing: %s\n", HostAdapter, DisconnectMessage, TaggedQueuingMessage);
1800         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
1801                 BusLogic_Info("  Scatter/Gather Limit: %d of %d segments, " "Mailboxes: %d\n", HostAdapter, HostAdapter->DriverScatterGatherLimit, HostAdapter->HostAdapterScatterGatherLimit, HostAdapter->MailboxCount);
1802                 BusLogic_Info("  Driver Queue Depth: %d, " "Host Adapter Queue Depth: %d\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->HostAdapterQueueDepth);
1803         } else
1804                 BusLogic_Info("  Driver Queue Depth: %d, " "Scatter/Gather Limit: %d segments\n", HostAdapter, HostAdapter->DriverQueueDepth, HostAdapter->DriverScatterGatherLimit);
1805         BusLogic_Info("  Tagged Queue Depth: ", HostAdapter);
1806         CommonTaggedQueueDepth = true;
1807         for (TargetID = 1; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
1808                 if (HostAdapter->QueueDepth[TargetID] != HostAdapter->QueueDepth[0]) {
1809                         CommonTaggedQueueDepth = false;
1810                         break;
1811                 }
1812         if (CommonTaggedQueueDepth) {
1813                 if (HostAdapter->QueueDepth[0] > 0)
1814                         BusLogic_Info("%d", HostAdapter, HostAdapter->QueueDepth[0]);
1815                 else
1816                         BusLogic_Info("Automatic", HostAdapter);
1817         } else
1818                 BusLogic_Info("Individual", HostAdapter);
1819         BusLogic_Info(", Untagged Queue Depth: %d\n", HostAdapter, HostAdapter->UntaggedQueueDepth);
1820         if (HostAdapter->TerminationInfoValid) {
1821                 if (HostAdapter->HostWideSCSI)
1822                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? (HostAdapter->HighByteTerminated ? "Both Enabled" : "Low Enabled")
1823                                                                                   : (HostAdapter->HighByteTerminated ? "High Enabled" : "Both Disabled")));
1824                 else
1825                         BusLogic_Info("  SCSI Bus Termination: %s", HostAdapter, (HostAdapter->LowByteTerminated ? "Enabled" : "Disabled"));
1826                 if (HostAdapter->HostSupportsSCAM)
1827                         BusLogic_Info(", SCAM: %s", HostAdapter, (HostAdapter->SCAM_Enabled ? (HostAdapter->SCAM_Level2 ? "Enabled, Level 2" : "Enabled, Level 1")
1828                                                                   : "Disabled"));
1829                 BusLogic_Info("\n", HostAdapter);
1830         }
1831         /*
1832            Indicate reporting the Host Adapter configuration completed successfully.
1833          */
1834         return true;
1835 }
1836
1837
1838 /*
1839   BusLogic_AcquireResources acquires the system resources necessary to use
1840   Host Adapter.
1841 */
1842
1843 static bool __init BusLogic_AcquireResources(struct BusLogic_HostAdapter *HostAdapter)
1844 {
1845         if (HostAdapter->IRQ_Channel == 0) {
1846                 BusLogic_Error("NO LEGAL INTERRUPT CHANNEL ASSIGNED - DETACHING\n", HostAdapter);
1847                 return false;
1848         }
1849         /*
1850            Acquire shared access to the IRQ Channel.
1851          */
1852         if (request_irq(HostAdapter->IRQ_Channel, BusLogic_InterruptHandler, IRQF_SHARED, HostAdapter->FullModelName, HostAdapter) < 0) {
1853                 BusLogic_Error("UNABLE TO ACQUIRE IRQ CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->IRQ_Channel);
1854                 return false;
1855         }
1856         HostAdapter->IRQ_ChannelAcquired = true;
1857         /*
1858            Acquire exclusive access to the DMA Channel.
1859          */
1860         if (HostAdapter->DMA_Channel > 0) {
1861                 if (request_dma(HostAdapter->DMA_Channel, HostAdapter->FullModelName) < 0) {
1862                         BusLogic_Error("UNABLE TO ACQUIRE DMA CHANNEL %d - DETACHING\n", HostAdapter, HostAdapter->DMA_Channel);
1863                         return false;
1864                 }
1865                 set_dma_mode(HostAdapter->DMA_Channel, DMA_MODE_CASCADE);
1866                 enable_dma(HostAdapter->DMA_Channel);
1867                 HostAdapter->DMA_ChannelAcquired = true;
1868         }
1869         /*
1870            Indicate the System Resource Acquisition completed successfully,
1871          */
1872         return true;
1873 }
1874
1875
1876 /*
1877   BusLogic_ReleaseResources releases any system resources previously acquired
1878   by BusLogic_AcquireResources.
1879 */
1880
1881 static void BusLogic_ReleaseResources(struct BusLogic_HostAdapter *HostAdapter)
1882 {
1883         /*
1884            Release shared access to the IRQ Channel.
1885          */
1886         if (HostAdapter->IRQ_ChannelAcquired)
1887                 free_irq(HostAdapter->IRQ_Channel, HostAdapter);
1888         /*
1889            Release exclusive access to the DMA Channel.
1890          */
1891         if (HostAdapter->DMA_ChannelAcquired)
1892                 free_dma(HostAdapter->DMA_Channel);
1893         /*
1894            Release any allocated memory structs not released elsewhere
1895          */
1896         if (HostAdapter->MailboxSpace)
1897                 pci_free_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, HostAdapter->MailboxSpace, HostAdapter->MailboxSpaceHandle);
1898         pci_dev_put(HostAdapter->PCI_Device);
1899         HostAdapter->MailboxSpace = NULL;
1900         HostAdapter->MailboxSpaceHandle = 0;
1901         HostAdapter->MailboxSize = 0;
1902 }
1903
1904
1905 /*
1906   BusLogic_InitializeHostAdapter initializes Host Adapter.  This is the only
1907   function called during SCSI Host Adapter detection which modifies the state
1908   of the Host Adapter from its initial power on or hard reset state.
1909 */
1910
1911 static bool BusLogic_InitializeHostAdapter(struct BusLogic_HostAdapter
1912                                               *HostAdapter)
1913 {
1914         struct BusLogic_ExtendedMailboxRequest ExtendedMailboxRequest;
1915         enum BusLogic_RoundRobinModeRequest RoundRobinModeRequest;
1916         enum BusLogic_SetCCBFormatRequest SetCCBFormatRequest;
1917         int TargetID;
1918         /*
1919            Initialize the pointers to the first and last CCBs that are queued for
1920            completion processing.
1921          */
1922         HostAdapter->FirstCompletedCCB = NULL;
1923         HostAdapter->LastCompletedCCB = NULL;
1924         /*
1925            Initialize the Bus Device Reset Pending CCB, Tagged Queuing Active,
1926            Command Successful Flag, Active Commands, and Commands Since Reset
1927            for each Target Device.
1928          */
1929         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
1930                 HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
1931                 HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
1932                 HostAdapter->TargetFlags[TargetID].CommandSuccessfulFlag = false;
1933                 HostAdapter->ActiveCommands[TargetID] = 0;
1934                 HostAdapter->CommandsSinceReset[TargetID] = 0;
1935         }
1936         /*
1937            FlashPoint Host Adapters do not use Outgoing and Incoming Mailboxes.
1938          */
1939         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
1940                 goto Done;
1941         /*
1942            Initialize the Outgoing and Incoming Mailbox pointers.
1943          */
1944         HostAdapter->MailboxSize = HostAdapter->MailboxCount * (sizeof(struct BusLogic_OutgoingMailbox) + sizeof(struct BusLogic_IncomingMailbox));
1945         HostAdapter->MailboxSpace = pci_alloc_consistent(HostAdapter->PCI_Device, HostAdapter->MailboxSize, &HostAdapter->MailboxSpaceHandle);
1946         if (HostAdapter->MailboxSpace == NULL)
1947                 return BusLogic_Failure(HostAdapter, "MAILBOX ALLOCATION");
1948         HostAdapter->FirstOutgoingMailbox = (struct BusLogic_OutgoingMailbox *) HostAdapter->MailboxSpace;
1949         HostAdapter->LastOutgoingMailbox = HostAdapter->FirstOutgoingMailbox + HostAdapter->MailboxCount - 1;
1950         HostAdapter->NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
1951         HostAdapter->FirstIncomingMailbox = (struct BusLogic_IncomingMailbox *) (HostAdapter->LastOutgoingMailbox + 1);
1952         HostAdapter->LastIncomingMailbox = HostAdapter->FirstIncomingMailbox + HostAdapter->MailboxCount - 1;
1953         HostAdapter->NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
1954
1955         /*
1956            Initialize the Outgoing and Incoming Mailbox structures.
1957          */
1958         memset(HostAdapter->FirstOutgoingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_OutgoingMailbox));
1959         memset(HostAdapter->FirstIncomingMailbox, 0, HostAdapter->MailboxCount * sizeof(struct BusLogic_IncomingMailbox));
1960         /*
1961            Initialize the Host Adapter's Pointer to the Outgoing/Incoming Mailboxes.
1962          */
1963         ExtendedMailboxRequest.MailboxCount = HostAdapter->MailboxCount;
1964         ExtendedMailboxRequest.BaseMailboxAddress = (u32) HostAdapter->MailboxSpaceHandle;
1965         if (BusLogic_Command(HostAdapter, BusLogic_InitializeExtendedMailbox, &ExtendedMailboxRequest, sizeof(ExtendedMailboxRequest), NULL, 0) < 0)
1966                 return BusLogic_Failure(HostAdapter, "MAILBOX INITIALIZATION");
1967         /*
1968            Enable Strict Round Robin Mode if supported by the Host Adapter.  In
1969            Strict Round Robin Mode, the Host Adapter only looks at the next Outgoing
1970            Mailbox for each new command, rather than scanning through all the
1971            Outgoing Mailboxes to find any that have new commands in them.  Strict
1972            Round Robin Mode is significantly more efficient.
1973          */
1974         if (HostAdapter->StrictRoundRobinModeSupport) {
1975                 RoundRobinModeRequest = BusLogic_StrictRoundRobinMode;
1976                 if (BusLogic_Command(HostAdapter, BusLogic_EnableStrictRoundRobinMode, &RoundRobinModeRequest, sizeof(RoundRobinModeRequest), NULL, 0) < 0)
1977                         return BusLogic_Failure(HostAdapter, "ENABLE STRICT ROUND ROBIN MODE");
1978         }
1979         /*
1980            For Host Adapters that support Extended LUN Format CCBs, issue the Set CCB
1981            Format command to allow 32 Logical Units per Target Device.
1982          */
1983         if (HostAdapter->ExtendedLUNSupport) {
1984                 SetCCBFormatRequest = BusLogic_ExtendedLUNFormatCCB;
1985                 if (BusLogic_Command(HostAdapter, BusLogic_SetCCBFormat, &SetCCBFormatRequest, sizeof(SetCCBFormatRequest), NULL, 0) < 0)
1986                         return BusLogic_Failure(HostAdapter, "SET CCB FORMAT");
1987         }
1988         /*
1989            Announce Successful Initialization.
1990          */
1991       Done:
1992         if (!HostAdapter->HostAdapterInitialized) {
1993                 BusLogic_Info("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1994                 BusLogic_Info("\n", HostAdapter);
1995         } else
1996                 BusLogic_Warning("*** %s Initialized Successfully ***\n", HostAdapter, HostAdapter->FullModelName);
1997         HostAdapter->HostAdapterInitialized = true;
1998         /*
1999            Indicate the Host Adapter Initialization completed successfully.
2000          */
2001         return true;
2002 }
2003
2004
2005 /*
2006   BusLogic_TargetDeviceInquiry inquires about the Target Devices accessible
2007   through Host Adapter.
2008 */
2009
2010 static bool __init BusLogic_TargetDeviceInquiry(struct BusLogic_HostAdapter
2011                                                    *HostAdapter)
2012 {
2013         u16 InstalledDevices;
2014         u8 InstalledDevicesID0to7[8];
2015         struct BusLogic_SetupInformation SetupInformation;
2016         u8 SynchronousPeriod[BusLogic_MaxTargetDevices];
2017         unsigned char RequestedReplyLength;
2018         int TargetID;
2019         /*
2020            Wait a few seconds between the Host Adapter Hard Reset which initiates
2021            a SCSI Bus Reset and issuing any SCSI Commands.  Some SCSI devices get
2022            confused if they receive SCSI Commands too soon after a SCSI Bus Reset.
2023          */
2024         BusLogic_Delay(HostAdapter->BusSettleTime);
2025         /*
2026            FlashPoint Host Adapters do not provide for Target Device Inquiry.
2027          */
2028         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2029                 return true;
2030         /*
2031            Inhibit the Target Device Inquiry if requested.
2032          */
2033         if (HostAdapter->DriverOptions != NULL && HostAdapter->DriverOptions->LocalOptions.InhibitTargetInquiry)
2034                 return true;
2035         /*
2036            Issue the Inquire Target Devices command for host adapters with firmware
2037            version 4.25 or later, or the Inquire Installed Devices ID 0 to 7 command
2038            for older host adapters.  This is necessary to force Synchronous Transfer
2039            Negotiation so that the Inquire Setup Information and Inquire Synchronous
2040            Period commands will return valid data.  The Inquire Target Devices command
2041            is preferable to Inquire Installed Devices ID 0 to 7 since it only probes
2042            Logical Unit 0 of each Target Device.
2043          */
2044         if (strcmp(HostAdapter->FirmwareVersion, "4.25") >= 0) {
2045
2046                 /*
2047                  * Issue a Inquire Target Devices command.  Inquire Target Devices only
2048                  * tests Logical Unit 0 of each Target Device unlike the Inquire Installed
2049                  * Devices commands which test Logical Units 0 - 7.  Two bytes are
2050                  * returned, where byte 0 bit 0 set indicates that Target Device 0 exists,
2051                  * and so on.
2052                  */
2053
2054                 if (BusLogic_Command(HostAdapter, BusLogic_InquireTargetDevices, NULL, 0, &InstalledDevices, sizeof(InstalledDevices))
2055                     != sizeof(InstalledDevices))
2056                         return BusLogic_Failure(HostAdapter, "INQUIRE TARGET DEVICES");
2057                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2058                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevices & (1 << TargetID) ? true : false);
2059         } else {
2060
2061                 /*
2062                  * Issue an Inquire Installed Devices command.  For each Target Device,
2063                  * a byte is returned where bit 0 set indicates that Logical Unit 0
2064                  * exists, bit 1 set indicates that Logical Unit 1 exists, and so on.
2065                  */
2066
2067                 if (BusLogic_Command(HostAdapter, BusLogic_InquireInstalledDevicesID0to7, NULL, 0, &InstalledDevicesID0to7, sizeof(InstalledDevicesID0to7))
2068                     != sizeof(InstalledDevicesID0to7))
2069                         return BusLogic_Failure(HostAdapter, "INQUIRE INSTALLED DEVICES ID 0 TO 7");
2070                 for (TargetID = 0; TargetID < 8; TargetID++)
2071                         HostAdapter->TargetFlags[TargetID].TargetExists = (InstalledDevicesID0to7[TargetID] != 0 ? true : false);
2072         }
2073         /*
2074            Issue the Inquire Setup Information command.
2075          */
2076         RequestedReplyLength = sizeof(SetupInformation);
2077         if (BusLogic_Command(HostAdapter, BusLogic_InquireSetupInformation, &RequestedReplyLength, sizeof(RequestedReplyLength), &SetupInformation, sizeof(SetupInformation))
2078             != sizeof(SetupInformation))
2079                 return BusLogic_Failure(HostAdapter, "INQUIRE SETUP INFORMATION");
2080         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2081                 HostAdapter->SynchronousOffset[TargetID] = (TargetID < 8 ? SetupInformation.SynchronousValuesID0to7[TargetID].Offset : SetupInformation.SynchronousValuesID8to15[TargetID - 8].Offset);
2082         if (strcmp(HostAdapter->FirmwareVersion, "5.06L") >= 0)
2083                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2084                         HostAdapter->TargetFlags[TargetID].WideTransfersActive = (TargetID < 8 ? (SetupInformation.WideTransfersActiveID0to7 & (1 << TargetID)
2085                                                                                                   ? true : false)
2086                                                                                   : (SetupInformation.WideTransfersActiveID8to15 & (1 << (TargetID - 8))
2087                                                                                      ? true : false));
2088         /*
2089            Issue the Inquire Synchronous Period command.
2090          */
2091         if (HostAdapter->FirmwareVersion[0] >= '3') {
2092
2093                 /* Issue a Inquire Synchronous Period command.  For each Target Device,
2094                  * a byte is returned which represents the Synchronous Transfer Period
2095                  * in units of 10 nanoseconds.
2096                  */
2097
2098                 RequestedReplyLength = sizeof(SynchronousPeriod);
2099                 if (BusLogic_Command(HostAdapter, BusLogic_InquireSynchronousPeriod, &RequestedReplyLength, sizeof(RequestedReplyLength), &SynchronousPeriod, sizeof(SynchronousPeriod))
2100                     != sizeof(SynchronousPeriod))
2101                         return BusLogic_Failure(HostAdapter, "INQUIRE SYNCHRONOUS PERIOD");
2102                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2103                         HostAdapter->SynchronousPeriod[TargetID] = SynchronousPeriod[TargetID];
2104         } else
2105                 for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2106                         if (SetupInformation.SynchronousValuesID0to7[TargetID].Offset > 0)
2107                                 HostAdapter->SynchronousPeriod[TargetID] = 20 + 5 * SetupInformation.SynchronousValuesID0to7[TargetID]
2108                                     .TransferPeriod;
2109         /*
2110            Indicate the Target Device Inquiry completed successfully.
2111          */
2112         return true;
2113 }
2114
2115 /*
2116   BusLogic_InitializeHostStructure initializes the fields in the SCSI Host
2117   structure.  The base, io_port, n_io_ports, irq, and dma_channel fields in the
2118   SCSI Host structure are intentionally left uninitialized, as this driver
2119   handles acquisition and release of these resources explicitly, as well as
2120   ensuring exclusive access to the Host Adapter hardware and data structures
2121   through explicit acquisition and release of the Host Adapter's Lock.
2122 */
2123
2124 static void __init BusLogic_InitializeHostStructure(struct BusLogic_HostAdapter
2125                                                     *HostAdapter, struct Scsi_Host *Host)
2126 {
2127         Host->max_id = HostAdapter->MaxTargetDevices;
2128         Host->max_lun = HostAdapter->MaxLogicalUnits;
2129         Host->max_channel = 0;
2130         Host->unique_id = HostAdapter->IO_Address;
2131         Host->this_id = HostAdapter->SCSI_ID;
2132         Host->can_queue = HostAdapter->DriverQueueDepth;
2133         Host->sg_tablesize = HostAdapter->DriverScatterGatherLimit;
2134         Host->unchecked_isa_dma = HostAdapter->BounceBuffersRequired;
2135         Host->cmd_per_lun = HostAdapter->UntaggedQueueDepth;
2136 }
2137
2138 /*
2139   BusLogic_SlaveConfigure will actually set the queue depth on individual
2140   scsi devices as they are permanently added to the device chain.  We
2141   shamelessly rip off the SelectQueueDepths code to make this work mostly
2142   like it used to.  Since we don't get called once at the end of the scan
2143   but instead get called for each device, we have to do things a bit
2144   differently.
2145 */
2146 static int BusLogic_SlaveConfigure(struct scsi_device *Device)
2147 {
2148         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Device->host->hostdata;
2149         int TargetID = Device->id;
2150         int QueueDepth = HostAdapter->QueueDepth[TargetID];
2151
2152         if (HostAdapter->TargetFlags[TargetID].TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2153                 if (QueueDepth == 0)
2154                         QueueDepth = BusLogic_MaxAutomaticTaggedQueueDepth;
2155                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2156                 scsi_adjust_queue_depth(Device, MSG_SIMPLE_TAG, QueueDepth);
2157         } else {
2158                 HostAdapter->TaggedQueuingPermitted &= ~(1 << TargetID);
2159                 QueueDepth = HostAdapter->UntaggedQueueDepth;
2160                 HostAdapter->QueueDepth[TargetID] = QueueDepth;
2161                 scsi_adjust_queue_depth(Device, 0, QueueDepth);
2162         }
2163         QueueDepth = 0;
2164         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++)
2165                 if (HostAdapter->TargetFlags[TargetID].TargetExists) {
2166                         QueueDepth += HostAdapter->QueueDepth[TargetID];
2167                 }
2168         if (QueueDepth > HostAdapter->AllocatedCCBs)
2169                 BusLogic_CreateAdditionalCCBs(HostAdapter, QueueDepth - HostAdapter->AllocatedCCBs, false);
2170         return 0;
2171 }
2172
2173 /*
2174   BusLogic_DetectHostAdapter probes for BusLogic Host Adapters at the standard
2175   I/O Addresses where they may be located, initializing, registering, and
2176   reporting the configuration of each BusLogic Host Adapter it finds.  It
2177   returns the number of BusLogic Host Adapters successfully initialized and
2178   registered.
2179 */
2180
2181 static int __init BusLogic_init(void)
2182 {
2183         int BusLogicHostAdapterCount = 0, DriverOptionsIndex = 0, ProbeIndex;
2184         struct BusLogic_HostAdapter *PrototypeHostAdapter;
2185         int ret = 0;
2186
2187 #ifdef MODULE
2188         if (BusLogic)
2189                 BusLogic_Setup(BusLogic);
2190 #endif
2191
2192         if (BusLogic_ProbeOptions.NoProbe)
2193                 return -ENODEV;
2194         BusLogic_ProbeInfoList =
2195             kzalloc(BusLogic_MaxHostAdapters * sizeof(struct BusLogic_ProbeInfo), GFP_KERNEL);
2196         if (BusLogic_ProbeInfoList == NULL) {
2197                 BusLogic_Error("BusLogic: Unable to allocate Probe Info List\n", NULL);
2198                 return -ENOMEM;
2199         }
2200
2201         PrototypeHostAdapter =
2202             kzalloc(sizeof(struct BusLogic_HostAdapter), GFP_KERNEL);
2203         if (PrototypeHostAdapter == NULL) {
2204                 kfree(BusLogic_ProbeInfoList);
2205                 BusLogic_Error("BusLogic: Unable to allocate Prototype " "Host Adapter\n", NULL);
2206                 return -ENOMEM;
2207         }
2208
2209 #ifdef MODULE
2210         if (BusLogic != NULL)
2211                 BusLogic_Setup(BusLogic);
2212 #endif
2213         BusLogic_InitializeProbeInfoList(PrototypeHostAdapter);
2214         for (ProbeIndex = 0; ProbeIndex < BusLogic_ProbeInfoCount; ProbeIndex++) {
2215                 struct BusLogic_ProbeInfo *ProbeInfo = &BusLogic_ProbeInfoList[ProbeIndex];
2216                 struct BusLogic_HostAdapter *HostAdapter = PrototypeHostAdapter;
2217                 struct Scsi_Host *Host;
2218                 if (ProbeInfo->IO_Address == 0)
2219                         continue;
2220                 memset(HostAdapter, 0, sizeof(struct BusLogic_HostAdapter));
2221                 HostAdapter->HostAdapterType = ProbeInfo->HostAdapterType;
2222                 HostAdapter->HostAdapterBusType = ProbeInfo->HostAdapterBusType;
2223                 HostAdapter->IO_Address = ProbeInfo->IO_Address;
2224                 HostAdapter->PCI_Address = ProbeInfo->PCI_Address;
2225                 HostAdapter->Bus = ProbeInfo->Bus;
2226                 HostAdapter->Device = ProbeInfo->Device;
2227                 HostAdapter->PCI_Device = ProbeInfo->PCI_Device;
2228                 HostAdapter->IRQ_Channel = ProbeInfo->IRQ_Channel;
2229                 HostAdapter->AddressCount = BusLogic_HostAdapterAddressCount[HostAdapter->HostAdapterType];
2230
2231                 /*
2232                    Make sure region is free prior to probing.
2233                  */
2234                 if (!request_region(HostAdapter->IO_Address, HostAdapter->AddressCount,
2235                                         "BusLogic"))
2236                         continue;
2237                 /*
2238                    Probe the Host Adapter.  If unsuccessful, abort further initialization.
2239                  */
2240                 if (!BusLogic_ProbeHostAdapter(HostAdapter)) {
2241                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2242                         continue;
2243                 }
2244                 /*
2245                    Hard Reset the Host Adapter.  If unsuccessful, abort further
2246                    initialization.
2247                  */
2248                 if (!BusLogic_HardwareResetHostAdapter(HostAdapter, true)) {
2249                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2250                         continue;
2251                 }
2252                 /*
2253                    Check the Host Adapter.  If unsuccessful, abort further initialization.
2254                  */
2255                 if (!BusLogic_CheckHostAdapter(HostAdapter)) {
2256                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2257                         continue;
2258                 }
2259                 /*
2260                    Initialize the Driver Options field if provided.
2261                  */
2262                 if (DriverOptionsIndex < BusLogic_DriverOptionsCount)
2263                         HostAdapter->DriverOptions = &BusLogic_DriverOptions[DriverOptionsIndex++];
2264                 /*
2265                    Announce the Driver Version and Date, Author's Name, Copyright Notice,
2266                    and Electronic Mail Address.
2267                  */
2268                 BusLogic_AnnounceDriver(HostAdapter);
2269                 /*
2270                    Register the SCSI Host structure.
2271                  */
2272
2273                 Host = scsi_host_alloc(&Bus_Logic_template, sizeof(struct BusLogic_HostAdapter));
2274                 if (Host == NULL) {
2275                         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2276                         continue;
2277                 }
2278                 HostAdapter = (struct BusLogic_HostAdapter *) Host->hostdata;
2279                 memcpy(HostAdapter, PrototypeHostAdapter, sizeof(struct BusLogic_HostAdapter));
2280                 HostAdapter->SCSI_Host = Host;
2281                 HostAdapter->HostNumber = Host->host_no;
2282                 /*
2283                    Add Host Adapter to the end of the list of registered BusLogic
2284                    Host Adapters.
2285                  */
2286                 list_add_tail(&HostAdapter->host_list, &BusLogic_host_list);
2287
2288                 /*
2289                    Read the Host Adapter Configuration, Configure the Host Adapter,
2290                    Acquire the System Resources necessary to use the Host Adapter, then
2291                    Create the Initial CCBs, Initialize the Host Adapter, and finally
2292                    perform Target Device Inquiry.
2293
2294                    From this point onward, any failure will be assumed to be due to a
2295                    problem with the Host Adapter, rather than due to having mistakenly
2296                    identified this port as belonging to a BusLogic Host Adapter.  The
2297                    I/O Address range will not be released, thereby preventing it from
2298                    being incorrectly identified as any other type of Host Adapter.
2299                  */
2300                 if (BusLogic_ReadHostAdapterConfiguration(HostAdapter) &&
2301                     BusLogic_ReportHostAdapterConfiguration(HostAdapter) &&
2302                     BusLogic_AcquireResources(HostAdapter) &&
2303                     BusLogic_CreateInitialCCBs(HostAdapter) &&
2304                     BusLogic_InitializeHostAdapter(HostAdapter) &&
2305                     BusLogic_TargetDeviceInquiry(HostAdapter)) {
2306                         /*
2307                            Initialization has been completed successfully.  Release and
2308                            re-register usage of the I/O Address range so that the Model
2309                            Name of the Host Adapter will appear, and initialize the SCSI
2310                            Host structure.
2311                          */
2312                         release_region(HostAdapter->IO_Address,
2313                                        HostAdapter->AddressCount);
2314                         if (!request_region(HostAdapter->IO_Address,
2315                                             HostAdapter->AddressCount,
2316                                             HostAdapter->FullModelName)) {
2317                                 printk(KERN_WARNING
2318                                         "BusLogic: Release and re-register of "
2319                                         "port 0x%04lx failed \n",
2320                                         (unsigned long)HostAdapter->IO_Address);
2321                                 BusLogic_DestroyCCBs(HostAdapter);
2322                                 BusLogic_ReleaseResources(HostAdapter);
2323                                 list_del(&HostAdapter->host_list);
2324                                 scsi_host_put(Host);
2325                                 ret = -ENOMEM;
2326                         } else {
2327                                 BusLogic_InitializeHostStructure(HostAdapter,
2328                                                                  Host);
2329                                 if (scsi_add_host(Host, HostAdapter->PCI_Device
2330                                                 ? &HostAdapter->PCI_Device->dev
2331                                                   : NULL)) {
2332                                         printk(KERN_WARNING
2333                                                "BusLogic: scsi_add_host()"
2334                                                "failed!\n");
2335                                         BusLogic_DestroyCCBs(HostAdapter);
2336                                         BusLogic_ReleaseResources(HostAdapter);
2337                                         list_del(&HostAdapter->host_list);
2338                                         scsi_host_put(Host);
2339                                         ret = -ENODEV;
2340                                 } else {
2341                                         scsi_scan_host(Host);
2342                                         BusLogicHostAdapterCount++;
2343                                 }
2344                         }
2345                 } else {
2346                         /*
2347                            An error occurred during Host Adapter Configuration Querying, Host
2348                            Adapter Configuration, Resource Acquisition, CCB Creation, Host
2349                            Adapter Initialization, or Target Device Inquiry, so remove Host
2350                            Adapter from the list of registered BusLogic Host Adapters, destroy
2351                            the CCBs, Release the System Resources, and Unregister the SCSI
2352                            Host.
2353                          */
2354                         BusLogic_DestroyCCBs(HostAdapter);
2355                         BusLogic_ReleaseResources(HostAdapter);
2356                         list_del(&HostAdapter->host_list);
2357                         scsi_host_put(Host);
2358                         ret = -ENODEV;
2359                 }
2360         }
2361         kfree(PrototypeHostAdapter);
2362         kfree(BusLogic_ProbeInfoList);
2363         BusLogic_ProbeInfoList = NULL;
2364         return ret;
2365 }
2366
2367
2368 /*
2369   BusLogic_ReleaseHostAdapter releases all resources previously acquired to
2370   support a specific Host Adapter, including the I/O Address range, and
2371   unregisters the BusLogic Host Adapter.
2372 */
2373
2374 static int __exit BusLogic_ReleaseHostAdapter(struct BusLogic_HostAdapter *HostAdapter)
2375 {
2376         struct Scsi_Host *Host = HostAdapter->SCSI_Host;
2377
2378         scsi_remove_host(Host);
2379
2380         /*
2381            FlashPoint Host Adapters must first be released by the FlashPoint
2382            SCCB Manager.
2383          */
2384         if (BusLogic_FlashPointHostAdapterP(HostAdapter))
2385                 FlashPoint_ReleaseHostAdapter(HostAdapter->CardHandle);
2386         /*
2387            Destroy the CCBs and release any system resources acquired to
2388            support Host Adapter.
2389          */
2390         BusLogic_DestroyCCBs(HostAdapter);
2391         BusLogic_ReleaseResources(HostAdapter);
2392         /*
2393            Release usage of the I/O Address range.
2394          */
2395         release_region(HostAdapter->IO_Address, HostAdapter->AddressCount);
2396         /*
2397            Remove Host Adapter from the list of registered BusLogic Host Adapters.
2398          */
2399         list_del(&HostAdapter->host_list);
2400
2401         scsi_host_put(Host);
2402         return 0;
2403 }
2404
2405
2406 /*
2407   BusLogic_QueueCompletedCCB queues CCB for completion processing.
2408 */
2409
2410 static void BusLogic_QueueCompletedCCB(struct BusLogic_CCB *CCB)
2411 {
2412         struct BusLogic_HostAdapter *HostAdapter = CCB->HostAdapter;
2413         CCB->Status = BusLogic_CCB_Completed;
2414         CCB->Next = NULL;
2415         if (HostAdapter->FirstCompletedCCB == NULL) {
2416                 HostAdapter->FirstCompletedCCB = CCB;
2417                 HostAdapter->LastCompletedCCB = CCB;
2418         } else {
2419                 HostAdapter->LastCompletedCCB->Next = CCB;
2420                 HostAdapter->LastCompletedCCB = CCB;
2421         }
2422         HostAdapter->ActiveCommands[CCB->TargetID]--;
2423 }
2424
2425
2426 /*
2427   BusLogic_ComputeResultCode computes a SCSI Subsystem Result Code from
2428   the Host Adapter Status and Target Device Status.
2429 */
2430
2431 static int BusLogic_ComputeResultCode(struct BusLogic_HostAdapter *HostAdapter, enum BusLogic_HostAdapterStatus HostAdapterStatus, enum BusLogic_TargetDeviceStatus TargetDeviceStatus)
2432 {
2433         int HostStatus;
2434         switch (HostAdapterStatus) {
2435         case BusLogic_CommandCompletedNormally:
2436         case BusLogic_LinkedCommandCompleted:
2437         case BusLogic_LinkedCommandCompletedWithFlag:
2438                 HostStatus = DID_OK;
2439                 break;
2440         case BusLogic_SCSISelectionTimeout:
2441                 HostStatus = DID_TIME_OUT;
2442                 break;
2443         case BusLogic_InvalidOutgoingMailboxActionCode:
2444         case BusLogic_InvalidCommandOperationCode:
2445         case BusLogic_InvalidCommandParameter:
2446                 BusLogic_Warning("BusLogic Driver Protocol Error 0x%02X\n", HostAdapter, HostAdapterStatus);
2447         case BusLogic_DataUnderRun:
2448         case BusLogic_DataOverRun:
2449         case BusLogic_UnexpectedBusFree:
2450         case BusLogic_LinkedCCBhasInvalidLUN:
2451         case BusLogic_AutoRequestSenseFailed:
2452         case BusLogic_TaggedQueuingMessageRejected:
2453         case BusLogic_UnsupportedMessageReceived:
2454         case BusLogic_HostAdapterHardwareFailed:
2455         case BusLogic_TargetDeviceReconnectedImproperly:
2456         case BusLogic_AbortQueueGenerated:
2457         case BusLogic_HostAdapterSoftwareError:
2458         case BusLogic_HostAdapterHardwareTimeoutError:
2459         case BusLogic_SCSIParityErrorDetected:
2460                 HostStatus = DID_ERROR;
2461                 break;
2462         case BusLogic_InvalidBusPhaseRequested:
2463         case BusLogic_TargetFailedResponseToATN:
2464         case BusLogic_HostAdapterAssertedRST:
2465         case BusLogic_OtherDeviceAssertedRST:
2466         case BusLogic_HostAdapterAssertedBusDeviceReset:
2467                 HostStatus = DID_RESET;
2468                 break;
2469         default:
2470                 BusLogic_Warning("Unknown Host Adapter Status 0x%02X\n", HostAdapter, HostAdapterStatus);
2471                 HostStatus = DID_ERROR;
2472                 break;
2473         }
2474         return (HostStatus << 16) | TargetDeviceStatus;
2475 }
2476
2477
2478 /*
2479   BusLogic_ScanIncomingMailboxes scans the Incoming Mailboxes saving any
2480   Incoming Mailbox entries for completion processing.
2481 */
2482
2483 static void BusLogic_ScanIncomingMailboxes(struct BusLogic_HostAdapter *HostAdapter)
2484 {
2485         /*
2486            Scan through the Incoming Mailboxes in Strict Round Robin fashion, saving
2487            any completed CCBs for further processing.  It is essential that for each
2488            CCB and SCSI Command issued, command completion processing is performed
2489            exactly once.  Therefore, only Incoming Mailboxes with completion code
2490            Command Completed Without Error, Command Completed With Error, or Command
2491            Aborted At Host Request are saved for completion processing.  When an
2492            Incoming Mailbox has a completion code of Aborted Command Not Found, the
2493            CCB had already completed or been aborted before the current Abort request
2494            was processed, and so completion processing has already occurred and no
2495            further action should be taken.
2496          */
2497         struct BusLogic_IncomingMailbox *NextIncomingMailbox = HostAdapter->NextIncomingMailbox;
2498         enum BusLogic_CompletionCode CompletionCode;
2499         while ((CompletionCode = NextIncomingMailbox->CompletionCode) != BusLogic_IncomingMailboxFree) {
2500                 /*
2501                    We are only allowed to do this because we limit our architectures we
2502                    run on to machines where bus_to_virt() actually works.  There *needs*
2503                    to be a dma_addr_to_virt() in the new PCI DMA mapping interface to
2504                    replace bus_to_virt() or else this code is going to become very
2505                    innefficient.
2506                  */
2507                 struct BusLogic_CCB *CCB = (struct BusLogic_CCB *) Bus_to_Virtual(NextIncomingMailbox->CCB);
2508                 if (CompletionCode != BusLogic_AbortedCommandNotFound) {
2509                         if (CCB->Status == BusLogic_CCB_Active || CCB->Status == BusLogic_CCB_Reset) {
2510                                 /*
2511                                    Save the Completion Code for this CCB and queue the CCB
2512                                    for completion processing.
2513                                  */
2514                                 CCB->CompletionCode = CompletionCode;
2515                                 BusLogic_QueueCompletedCCB(CCB);
2516                         } else {
2517                                 /*
2518                                    If a CCB ever appears in an Incoming Mailbox and is not marked
2519                                    as status Active or Reset, then there is most likely a bug in
2520                                    the Host Adapter firmware.
2521                                  */
2522                                 BusLogic_Warning("Illegal CCB #%ld status %d in " "Incoming Mailbox\n", HostAdapter, CCB->SerialNumber, CCB->Status);
2523                         }
2524                 }
2525                 NextIncomingMailbox->CompletionCode = BusLogic_IncomingMailboxFree;
2526                 if (++NextIncomingMailbox > HostAdapter->LastIncomingMailbox)
2527                         NextIncomingMailbox = HostAdapter->FirstIncomingMailbox;
2528         }
2529         HostAdapter->NextIncomingMailbox = NextIncomingMailbox;
2530 }
2531
2532
2533 /*
2534   BusLogic_ProcessCompletedCCBs iterates over the completed CCBs for Host
2535   Adapter setting the SCSI Command Result Codes, deallocating the CCBs, and
2536   calling the SCSI Subsystem Completion Routines.  The Host Adapter's Lock
2537   should already have been acquired by the caller.
2538 */
2539
2540 static void BusLogic_ProcessCompletedCCBs(struct BusLogic_HostAdapter *HostAdapter)
2541 {
2542         if (HostAdapter->ProcessCompletedCCBsActive)
2543                 return;
2544         HostAdapter->ProcessCompletedCCBsActive = true;
2545         while (HostAdapter->FirstCompletedCCB != NULL) {
2546                 struct BusLogic_CCB *CCB = HostAdapter->FirstCompletedCCB;
2547                 struct scsi_cmnd *Command = CCB->Command;
2548                 HostAdapter->FirstCompletedCCB = CCB->Next;
2549                 if (HostAdapter->FirstCompletedCCB == NULL)
2550                         HostAdapter->LastCompletedCCB = NULL;
2551                 /*
2552                    Process the Completed CCB.
2553                  */
2554                 if (CCB->Opcode == BusLogic_BusDeviceReset) {
2555                         int TargetID = CCB->TargetID;
2556                         BusLogic_Warning("Bus Device Reset CCB #%ld to Target " "%d Completed\n", HostAdapter, CCB->SerialNumber, TargetID);
2557                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].BusDeviceResetsCompleted);
2558                         HostAdapter->TargetFlags[TargetID].TaggedQueuingActive = false;
2559                         HostAdapter->CommandsSinceReset[TargetID] = 0;
2560                         HostAdapter->LastResetCompleted[TargetID] = jiffies;
2561                         /*
2562                            Place CCB back on the Host Adapter's free list.
2563                          */
2564                         BusLogic_DeallocateCCB(CCB);
2565 #if 0                           /* this needs to be redone different for new EH */
2566                         /*
2567                            Bus Device Reset CCBs have the Command field non-NULL only when a
2568                            Bus Device Reset was requested for a Command that did not have a
2569                            currently active CCB in the Host Adapter (i.e., a Synchronous
2570                            Bus Device Reset), and hence would not have its Completion Routine
2571                            called otherwise.
2572                          */
2573                         while (Command != NULL) {
2574                                 struct scsi_cmnd *NextCommand = Command->reset_chain;
2575                                 Command->reset_chain = NULL;
2576                                 Command->result = DID_RESET << 16;
2577                                 Command->scsi_done(Command);
2578                                 Command = NextCommand;
2579                         }
2580 #endif
2581                         /*
2582                            Iterate over the CCBs for this Host Adapter performing completion
2583                            processing for any CCBs marked as Reset for this Target.
2584                          */
2585                         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
2586                                 if (CCB->Status == BusLogic_CCB_Reset && CCB->TargetID == TargetID) {
2587                                         Command = CCB->Command;
2588                                         BusLogic_DeallocateCCB(CCB);
2589                                         HostAdapter->ActiveCommands[TargetID]--;
2590                                         Command->result = DID_RESET << 16;
2591                                         Command->scsi_done(Command);
2592                                 }
2593                         HostAdapter->BusDeviceResetPendingCCB[TargetID] = NULL;
2594                 } else {
2595                         /*
2596                            Translate the Completion Code, Host Adapter Status, and Target
2597                            Device Status into a SCSI Subsystem Result Code.
2598                          */
2599                         switch (CCB->CompletionCode) {
2600                         case BusLogic_IncomingMailboxFree:
2601                         case BusLogic_AbortedCommandNotFound:
2602                         case BusLogic_InvalidCCB:
2603                                 BusLogic_Warning("CCB #%ld to Target %d Impossible State\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2604                                 break;
2605                         case BusLogic_CommandCompletedWithoutError:
2606                                 HostAdapter->TargetStatistics[CCB->TargetID]
2607                                     .CommandsCompleted++;
2608                                 HostAdapter->TargetFlags[CCB->TargetID]
2609                                     .CommandSuccessfulFlag = true;
2610                                 Command->result = DID_OK << 16;
2611                                 break;
2612                         case BusLogic_CommandAbortedAtHostRequest:
2613                                 BusLogic_Warning("CCB #%ld to Target %d Aborted\n", HostAdapter, CCB->SerialNumber, CCB->TargetID);
2614                                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[CCB->TargetID]
2615                                                                .CommandAbortsCompleted);
2616                                 Command->result = DID_ABORT << 16;
2617                                 break;
2618                         case BusLogic_CommandCompletedWithError:
2619                                 Command->result = BusLogic_ComputeResultCode(HostAdapter, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2620                                 if (CCB->HostAdapterStatus != BusLogic_SCSISelectionTimeout) {
2621                                         HostAdapter->TargetStatistics[CCB->TargetID]
2622                                             .CommandsCompleted++;
2623                                         if (BusLogic_GlobalOptions.TraceErrors) {
2624                                                 int i;
2625                                                 BusLogic_Notice("CCB #%ld Target %d: Result %X Host "
2626                                                                 "Adapter Status %02X " "Target Status %02X\n", HostAdapter, CCB->SerialNumber, CCB->TargetID, Command->result, CCB->HostAdapterStatus, CCB->TargetDeviceStatus);
2627                                                 BusLogic_Notice("CDB   ", HostAdapter);
2628                                                 for (i = 0; i < CCB->CDB_Length; i++)
2629                                                         BusLogic_Notice(" %02X", HostAdapter, CCB->CDB[i]);
2630                                                 BusLogic_Notice("\n", HostAdapter);
2631                                                 BusLogic_Notice("Sense ", HostAdapter);
2632                                                 for (i = 0; i < CCB->SenseDataLength; i++)
2633                                                         BusLogic_Notice(" %02X", HostAdapter, Command->sense_buffer[i]);
2634                                                 BusLogic_Notice("\n", HostAdapter);
2635                                         }
2636                                 }
2637                                 break;
2638                         }
2639                         /*
2640                            When an INQUIRY command completes normally, save the
2641                            CmdQue (Tagged Queuing Supported) and WBus16 (16 Bit
2642                            Wide Data Transfers Supported) bits.
2643                          */
2644                         if (CCB->CDB[0] == INQUIRY && CCB->CDB[1] == 0 && CCB->HostAdapterStatus == BusLogic_CommandCompletedNormally) {
2645                                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[CCB->TargetID];
2646                                 struct SCSI_Inquiry *InquiryResult =
2647                                         (struct SCSI_Inquiry *) scsi_sglist(Command);
2648                                 TargetFlags->TargetExists = true;
2649                                 TargetFlags->TaggedQueuingSupported = InquiryResult->CmdQue;
2650                                 TargetFlags->WideTransfersSupported = InquiryResult->WBus16;
2651                         }
2652                         /*
2653                            Place CCB back on the Host Adapter's free list.
2654                          */
2655                         BusLogic_DeallocateCCB(CCB);
2656                         /*
2657                            Call the SCSI Command Completion Routine.
2658                          */
2659                         Command->scsi_done(Command);
2660                 }
2661         }
2662         HostAdapter->ProcessCompletedCCBsActive = false;
2663 }
2664
2665
2666 /*
2667   BusLogic_InterruptHandler handles hardware interrupts from BusLogic Host
2668   Adapters.
2669 */
2670
2671 static irqreturn_t BusLogic_InterruptHandler(int IRQ_Channel, void *DeviceIdentifier)
2672 {
2673         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) DeviceIdentifier;
2674         unsigned long ProcessorFlags;
2675         /*
2676            Acquire exclusive access to Host Adapter.
2677          */
2678         spin_lock_irqsave(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2679         /*
2680            Handle Interrupts appropriately for each Host Adapter type.
2681          */
2682         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2683                 union BusLogic_InterruptRegister InterruptRegister;
2684                 /*
2685                    Read the Host Adapter Interrupt Register.
2686                  */
2687                 InterruptRegister.All = BusLogic_ReadInterruptRegister(HostAdapter);
2688                 if (InterruptRegister.ir.InterruptValid) {
2689                         /*
2690                            Acknowledge the interrupt and reset the Host Adapter
2691                            Interrupt Register.
2692                          */
2693                         BusLogic_InterruptReset(HostAdapter);
2694                         /*
2695                            Process valid External SCSI Bus Reset and Incoming Mailbox
2696                            Loaded Interrupts.  Command Complete Interrupts are noted,
2697                            and Outgoing Mailbox Available Interrupts are ignored, as
2698                            they are never enabled.
2699                          */
2700                         if (InterruptRegister.ir.ExternalBusReset)
2701                                 HostAdapter->HostAdapterExternalReset = true;
2702                         else if (InterruptRegister.ir.IncomingMailboxLoaded)
2703                                 BusLogic_ScanIncomingMailboxes(HostAdapter);
2704                         else if (InterruptRegister.ir.CommandComplete)
2705                                 HostAdapter->HostAdapterCommandCompleted = true;
2706                 }
2707         } else {
2708                 /*
2709                    Check if there is a pending interrupt for this Host Adapter.
2710                  */
2711                 if (FlashPoint_InterruptPending(HostAdapter->CardHandle))
2712                         switch (FlashPoint_HandleInterrupt(HostAdapter->CardHandle)) {
2713                         case FlashPoint_NormalInterrupt:
2714                                 break;
2715                         case FlashPoint_ExternalBusReset:
2716                                 HostAdapter->HostAdapterExternalReset = true;
2717                                 break;
2718                         case FlashPoint_InternalError:
2719                                 BusLogic_Warning("Internal FlashPoint Error detected" " - Resetting Host Adapter\n", HostAdapter);
2720                                 HostAdapter->HostAdapterInternalError = true;
2721                                 break;
2722                         }
2723         }
2724         /*
2725            Process any completed CCBs.
2726          */
2727         if (HostAdapter->FirstCompletedCCB != NULL)
2728                 BusLogic_ProcessCompletedCCBs(HostAdapter);
2729         /*
2730            Reset the Host Adapter if requested.
2731          */
2732         if (HostAdapter->HostAdapterExternalReset) {
2733                 BusLogic_Warning("Resetting %s due to External SCSI Bus Reset\n", HostAdapter, HostAdapter->FullModelName);
2734                 BusLogic_IncrementErrorCounter(&HostAdapter->ExternalHostAdapterResets);
2735                 BusLogic_ResetHostAdapter(HostAdapter, false);
2736                 HostAdapter->HostAdapterExternalReset = false;
2737         } else if (HostAdapter->HostAdapterInternalError) {
2738                 BusLogic_Warning("Resetting %s due to Host Adapter Internal Error\n", HostAdapter, HostAdapter->FullModelName);
2739                 BusLogic_IncrementErrorCounter(&HostAdapter->HostAdapterInternalErrors);
2740                 BusLogic_ResetHostAdapter(HostAdapter, true);
2741                 HostAdapter->HostAdapterInternalError = false;
2742         }
2743         /*
2744            Release exclusive access to Host Adapter.
2745          */
2746         spin_unlock_irqrestore(HostAdapter->SCSI_Host->host_lock, ProcessorFlags);
2747         return IRQ_HANDLED;
2748 }
2749
2750
2751 /*
2752   BusLogic_WriteOutgoingMailbox places CCB and Action Code into an Outgoing
2753   Mailbox for execution by Host Adapter.  The Host Adapter's Lock should
2754   already have been acquired by the caller.
2755 */
2756
2757 static bool BusLogic_WriteOutgoingMailbox(struct BusLogic_HostAdapter
2758                                              *HostAdapter, enum BusLogic_ActionCode ActionCode, struct BusLogic_CCB *CCB)
2759 {
2760         struct BusLogic_OutgoingMailbox *NextOutgoingMailbox;
2761         NextOutgoingMailbox = HostAdapter->NextOutgoingMailbox;
2762         if (NextOutgoingMailbox->ActionCode == BusLogic_OutgoingMailboxFree) {
2763                 CCB->Status = BusLogic_CCB_Active;
2764                 /*
2765                    The CCB field must be written before the Action Code field since
2766                    the Host Adapter is operating asynchronously and the locking code
2767                    does not protect against simultaneous access by the Host Adapter.
2768                  */
2769                 NextOutgoingMailbox->CCB = CCB->DMA_Handle;
2770                 NextOutgoingMailbox->ActionCode = ActionCode;
2771                 BusLogic_StartMailboxCommand(HostAdapter);
2772                 if (++NextOutgoingMailbox > HostAdapter->LastOutgoingMailbox)
2773                         NextOutgoingMailbox = HostAdapter->FirstOutgoingMailbox;
2774                 HostAdapter->NextOutgoingMailbox = NextOutgoingMailbox;
2775                 if (ActionCode == BusLogic_MailboxStartCommand) {
2776                         HostAdapter->ActiveCommands[CCB->TargetID]++;
2777                         if (CCB->Opcode != BusLogic_BusDeviceReset)
2778                                 HostAdapter->TargetStatistics[CCB->TargetID].CommandsAttempted++;
2779                 }
2780                 return true;
2781         }
2782         return false;
2783 }
2784
2785 /* Error Handling (EH) support */
2786
2787 static int BusLogic_host_reset(struct scsi_cmnd * SCpnt)
2788 {
2789         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) SCpnt->device->host->hostdata;
2790
2791         unsigned int id = SCpnt->device->id;
2792         struct BusLogic_TargetStatistics *stats = &HostAdapter->TargetStatistics[id];
2793         int rc;
2794
2795         spin_lock_irq(SCpnt->device->host->host_lock);
2796
2797         BusLogic_IncrementErrorCounter(&stats->HostAdapterResetsRequested);
2798
2799         rc = BusLogic_ResetHostAdapter(HostAdapter, false);
2800         spin_unlock_irq(SCpnt->device->host->host_lock);
2801         return rc;
2802 }
2803
2804 /*
2805   BusLogic_QueueCommand creates a CCB for Command and places it into an
2806   Outgoing Mailbox for execution by the associated Host Adapter.
2807 */
2808
2809 static int BusLogic_QueueCommand(struct scsi_cmnd *Command, void (*CompletionRoutine) (struct scsi_cmnd *))
2810 {
2811         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
2812         struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[Command->device->id];
2813         struct BusLogic_TargetStatistics *TargetStatistics = HostAdapter->TargetStatistics;
2814         unsigned char *CDB = Command->cmnd;
2815         int CDB_Length = Command->cmd_len;
2816         int TargetID = Command->device->id;
2817         int LogicalUnit = Command->device->lun;
2818         int BufferLength = scsi_bufflen(Command);
2819         int Count;
2820         struct BusLogic_CCB *CCB;
2821         /*
2822            SCSI REQUEST_SENSE commands will be executed automatically by the Host
2823            Adapter for any errors, so they should not be executed explicitly unless
2824            the Sense Data is zero indicating that no error occurred.
2825          */
2826         if (CDB[0] == REQUEST_SENSE && Command->sense_buffer[0] != 0) {
2827                 Command->result = DID_OK << 16;
2828                 CompletionRoutine(Command);
2829                 return 0;
2830         }
2831         /*
2832            Allocate a CCB from the Host Adapter's free list.  In the unlikely event
2833            that there are none available and memory allocation fails, wait 1 second
2834            and try again.  If that fails, the Host Adapter is probably hung so signal
2835            an error as a Host Adapter Hard Reset should be initiated soon.
2836          */
2837         CCB = BusLogic_AllocateCCB(HostAdapter);
2838         if (CCB == NULL) {
2839                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2840                 BusLogic_Delay(1);
2841                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2842                 CCB = BusLogic_AllocateCCB(HostAdapter);
2843                 if (CCB == NULL) {
2844                         Command->result = DID_ERROR << 16;
2845                         CompletionRoutine(Command);
2846                         return 0;
2847                 }
2848         }
2849
2850         /*
2851            Initialize the fields in the BusLogic Command Control Block (CCB).
2852          */
2853         Count = scsi_dma_map(Command);
2854         BUG_ON(Count < 0);
2855         if (Count) {
2856                 struct scatterlist *sg;
2857                 int i;
2858
2859                 CCB->Opcode = BusLogic_InitiatorCCB_ScatterGather;
2860                 CCB->DataLength = Count * sizeof(struct BusLogic_ScatterGatherSegment);
2861                 if (BusLogic_MultiMasterHostAdapterP(HostAdapter))
2862                         CCB->DataPointer = (unsigned int) CCB->DMA_Handle + ((unsigned long) &CCB->ScatterGatherList - (unsigned long) CCB);
2863                 else
2864                         CCB->DataPointer = Virtual_to_32Bit_Virtual(CCB->ScatterGatherList);
2865
2866                 scsi_for_each_sg(Command, sg, Count, i) {
2867                         CCB->ScatterGatherList[i].SegmentByteCount =
2868                                 sg_dma_len(sg);
2869                         CCB->ScatterGatherList[i].SegmentDataPointer =
2870                                 sg_dma_address(sg);
2871                 }
2872         } else if (!Count) {
2873                 CCB->Opcode = BusLogic_InitiatorCCB;
2874                 CCB->DataLength = BufferLength;
2875                 CCB->DataPointer = 0;
2876         }
2877
2878         switch (CDB[0]) {
2879         case READ_6:
2880         case READ_10:
2881                 CCB->DataDirection = BusLogic_DataInLengthChecked;
2882                 TargetStatistics[TargetID].ReadCommands++;
2883                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesRead, BufferLength);
2884                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].ReadCommandSizeBuckets, BufferLength);
2885                 break;
2886         case WRITE_6:
2887         case WRITE_10:
2888                 CCB->DataDirection = BusLogic_DataOutLengthChecked;
2889                 TargetStatistics[TargetID].WriteCommands++;
2890                 BusLogic_IncrementByteCounter(&TargetStatistics[TargetID].TotalBytesWritten, BufferLength);
2891                 BusLogic_IncrementSizeBucket(TargetStatistics[TargetID].WriteCommandSizeBuckets, BufferLength);
2892                 break;
2893         default:
2894                 CCB->DataDirection = BusLogic_UncheckedDataTransfer;
2895                 break;
2896         }
2897         CCB->CDB_Length = CDB_Length;
2898         CCB->HostAdapterStatus = 0;
2899         CCB->TargetDeviceStatus = 0;
2900         CCB->TargetID = TargetID;
2901         CCB->LogicalUnit = LogicalUnit;
2902         CCB->TagEnable = false;
2903         CCB->LegacyTagEnable = false;
2904         /*
2905            BusLogic recommends that after a Reset the first couple of commands that
2906            are sent to a Target Device be sent in a non Tagged Queue fashion so that
2907            the Host Adapter and Target Device can establish Synchronous and Wide
2908            Transfer before Queue Tag messages can interfere with the Synchronous and
2909            Wide Negotiation messages.  By waiting to enable Tagged Queuing until after
2910            the first BusLogic_MaxTaggedQueueDepth commands have been queued, it is
2911            assured that after a Reset any pending commands are requeued before Tagged
2912            Queuing is enabled and that the Tagged Queuing message will not occur while
2913            the partition table is being printed.  In addition, some devices do not
2914            properly handle the transition from non-tagged to tagged commands, so it is
2915            necessary to wait until there are no pending commands for a target device
2916            before queuing tagged commands.
2917          */
2918         if (HostAdapter->CommandsSinceReset[TargetID]++ >=
2919             BusLogic_MaxTaggedQueueDepth && !TargetFlags->TaggedQueuingActive && HostAdapter->ActiveCommands[TargetID] == 0 && TargetFlags->TaggedQueuingSupported && (HostAdapter->TaggedQueuingPermitted & (1 << TargetID))) {
2920                 TargetFlags->TaggedQueuingActive = true;
2921                 BusLogic_Notice("Tagged Queuing now active for Target %d\n", HostAdapter, TargetID);
2922         }
2923         if (TargetFlags->TaggedQueuingActive) {
2924                 enum BusLogic_QueueTag QueueTag = BusLogic_SimpleQueueTag;
2925                 /*
2926                    When using Tagged Queuing with Simple Queue Tags, it appears that disk
2927                    drive controllers do not guarantee that a queued command will not
2928                    remain in a disconnected state indefinitely if commands that read or
2929                    write nearer the head position continue to arrive without interruption.
2930                    Therefore, for each Target Device this driver keeps track of the last
2931                    time either the queue was empty or an Ordered Queue Tag was issued.  If
2932                    more than 4 seconds (one fifth of the 20 second disk timeout) have
2933                    elapsed since this last sequence point, this command will be issued
2934                    with an Ordered Queue Tag rather than a Simple Queue Tag, which forces
2935                    the Target Device to complete all previously queued commands before
2936                    this command may be executed.
2937                  */
2938                 if (HostAdapter->ActiveCommands[TargetID] == 0)
2939                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2940                 else if (time_after(jiffies, HostAdapter->LastSequencePoint[TargetID] + 4 * HZ)) {
2941                         HostAdapter->LastSequencePoint[TargetID] = jiffies;
2942                         QueueTag = BusLogic_OrderedQueueTag;
2943                 }
2944                 if (HostAdapter->ExtendedLUNSupport) {
2945                         CCB->TagEnable = true;
2946                         CCB->QueueTag = QueueTag;
2947                 } else {
2948                         CCB->LegacyTagEnable = true;
2949                         CCB->LegacyQueueTag = QueueTag;
2950                 }
2951         }
2952         memcpy(CCB->CDB, CDB, CDB_Length);
2953         CCB->SenseDataLength = SCSI_SENSE_BUFFERSIZE;
2954         CCB->SenseDataPointer = pci_map_single(HostAdapter->PCI_Device, Command->sense_buffer, CCB->SenseDataLength, PCI_DMA_FROMDEVICE);
2955         CCB->Command = Command;
2956         Command->scsi_done = CompletionRoutine;
2957         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
2958                 /*
2959                    Place the CCB in an Outgoing Mailbox.  The higher levels of the SCSI
2960                    Subsystem should not attempt to queue more commands than can be placed
2961                    in Outgoing Mailboxes, so there should always be one free.  In the
2962                    unlikely event that there are none available, wait 1 second and try
2963                    again.  If that fails, the Host Adapter is probably hung so signal an
2964                    error as a Host Adapter Hard Reset should be initiated soon.
2965                  */
2966                 if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2967                         spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
2968                         BusLogic_Warning("Unable to write Outgoing Mailbox - " "Pausing for 1 second\n", HostAdapter);
2969                         BusLogic_Delay(1);
2970                         spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
2971                         if (!BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxStartCommand, CCB)) {
2972                                 BusLogic_Warning("Still unable to write Outgoing Mailbox - " "Host Adapter Dead?\n", HostAdapter);
2973                                 BusLogic_DeallocateCCB(CCB);
2974                                 Command->result = DID_ERROR << 16;
2975                                 Command->scsi_done(Command);
2976                         }
2977                 }
2978         } else {
2979                 /*
2980                    Call the FlashPoint SCCB Manager to start execution of the CCB.
2981                  */
2982                 CCB->Status = BusLogic_CCB_Active;
2983                 HostAdapter->ActiveCommands[TargetID]++;
2984                 TargetStatistics[TargetID].CommandsAttempted++;
2985                 FlashPoint_StartCCB(HostAdapter->CardHandle, CCB);
2986                 /*
2987                    The Command may have already completed and BusLogic_QueueCompletedCCB
2988                    been called, or it may still be pending.
2989                  */
2990                 if (CCB->Status == BusLogic_CCB_Completed)
2991                         BusLogic_ProcessCompletedCCBs(HostAdapter);
2992         }
2993         return 0;
2994 }
2995
2996
2997 #if 0
2998 /*
2999   BusLogic_AbortCommand aborts Command if possible.
3000 */
3001
3002 static int BusLogic_AbortCommand(struct scsi_cmnd *Command)
3003 {
3004         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) Command->device->host->hostdata;
3005
3006         int TargetID = Command->device->id;
3007         struct BusLogic_CCB *CCB;
3008         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsRequested);
3009         /*
3010            Attempt to find an Active CCB for this Command.  If no Active CCB for this
3011            Command is found, then no Abort is necessary.
3012          */
3013         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3014                 if (CCB->Command == Command)
3015                         break;
3016         if (CCB == NULL) {
3017                 BusLogic_Warning("Unable to Abort Command to Target %d - " "No CCB Found\n", HostAdapter, TargetID);
3018                 return SUCCESS;
3019         } else if (CCB->Status == BusLogic_CCB_Completed) {
3020                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Completed\n", HostAdapter, TargetID);
3021                 return SUCCESS;
3022         } else if (CCB->Status == BusLogic_CCB_Reset) {
3023                 BusLogic_Warning("Unable to Abort Command to Target %d - " "CCB Reset\n", HostAdapter, TargetID);
3024                 return SUCCESS;
3025         }
3026         if (BusLogic_MultiMasterHostAdapterP(HostAdapter)) {
3027                 /*
3028                    Attempt to Abort this CCB.  MultiMaster Firmware versions prior to 5.xx
3029                    do not generate Abort Tag messages, but only generate the non-tagged
3030                    Abort message.  Since non-tagged commands are not sent by the Host
3031                    Adapter until the queue of outstanding tagged commands has completed,
3032                    and the Abort message is treated as a non-tagged command, it is
3033                    effectively impossible to abort commands when Tagged Queuing is active.
3034                    Firmware version 5.xx does generate Abort Tag messages, so it is
3035                    possible to abort commands when Tagged Queuing is active.
3036                  */
3037                 if (HostAdapter->TargetFlags[TargetID].TaggedQueuingActive && HostAdapter->FirmwareVersion[0] < '5') {
3038                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "Abort Tag Not Supported\n", HostAdapter, CCB->SerialNumber, TargetID);
3039                         return FAILURE;
3040                 } else if (BusLogic_WriteOutgoingMailbox(HostAdapter, BusLogic_MailboxAbortCommand, CCB)) {
3041                         BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3042                         BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3043                         return SUCCESS;
3044                 } else {
3045                         BusLogic_Warning("Unable to Abort CCB #%ld to Target %d - " "No Outgoing Mailboxes\n", HostAdapter, CCB->SerialNumber, TargetID);
3046                         return FAILURE;
3047                 }
3048         } else {
3049                 /*
3050                    Call the FlashPoint SCCB Manager to abort execution of the CCB.
3051                  */
3052                 BusLogic_Warning("Aborting CCB #%ld to Target %d\n", HostAdapter, CCB->SerialNumber, TargetID);
3053                 BusLogic_IncrementErrorCounter(&HostAdapter->TargetStatistics[TargetID].CommandAbortsAttempted);
3054                 FlashPoint_AbortCCB(HostAdapter->CardHandle, CCB);
3055                 /*
3056                    The Abort may have already been completed and
3057                    BusLogic_QueueCompletedCCB been called, or it
3058                    may still be pending.
3059                  */
3060                 if (CCB->Status == BusLogic_CCB_Completed) {
3061                         BusLogic_ProcessCompletedCCBs(HostAdapter);
3062                 }
3063                 return SUCCESS;
3064         }
3065         return SUCCESS;
3066 }
3067
3068 #endif
3069 /*
3070   BusLogic_ResetHostAdapter resets Host Adapter if possible, marking all
3071   currently executing SCSI Commands as having been Reset.
3072 */
3073
3074 static int BusLogic_ResetHostAdapter(struct BusLogic_HostAdapter *HostAdapter, bool HardReset)
3075 {
3076         struct BusLogic_CCB *CCB;
3077         int TargetID;
3078
3079         /*
3080          * Attempt to Reset and Reinitialize the Host Adapter.
3081          */
3082
3083         if (!(BusLogic_HardwareResetHostAdapter(HostAdapter, HardReset) && BusLogic_InitializeHostAdapter(HostAdapter))) {
3084                 BusLogic_Error("Resetting %s Failed\n", HostAdapter, HostAdapter->FullModelName);
3085                 return FAILURE;
3086         }
3087
3088         /*
3089          * Deallocate all currently executing CCBs.
3090          */
3091
3092         for (CCB = HostAdapter->All_CCBs; CCB != NULL; CCB = CCB->NextAll)
3093                 if (CCB->Status == BusLogic_CCB_Active)
3094                         BusLogic_DeallocateCCB(CCB);
3095         /*
3096          * Wait a few seconds between the Host Adapter Hard Reset which
3097          * initiates a SCSI Bus Reset and issuing any SCSI Commands.  Some
3098          * SCSI devices get confused if they receive SCSI Commands too soon
3099          * after a SCSI Bus Reset.
3100          */
3101
3102         if (HardReset) {
3103                 spin_unlock_irq(HostAdapter->SCSI_Host->host_lock);
3104                 BusLogic_Delay(HostAdapter->BusSettleTime);
3105                 spin_lock_irq(HostAdapter->SCSI_Host->host_lock);
3106         }
3107
3108         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3109                 HostAdapter->LastResetAttempted[TargetID] = jiffies;
3110                 HostAdapter->LastResetCompleted[TargetID] = jiffies;
3111         }
3112         return SUCCESS;
3113 }
3114
3115 /*
3116   BusLogic_BIOSDiskParameters returns the Heads/Sectors/Cylinders BIOS Disk
3117   Parameters for Disk.  The default disk geometry is 64 heads, 32 sectors, and
3118   the appropriate number of cylinders so as not to exceed drive capacity.  In
3119   order for disks equal to or larger than 1 GB to be addressable by the BIOS
3120   without exceeding the BIOS limitation of 1024 cylinders, Extended Translation
3121   may be enabled in AutoSCSI on FlashPoint Host Adapters and on "W" and "C"
3122   series MultiMaster Host Adapters, or by a dip switch setting on "S" and "A"
3123   series MultiMaster Host Adapters.  With Extended Translation enabled, drives
3124   between 1 GB inclusive and 2 GB exclusive are given a disk geometry of 128
3125   heads and 32 sectors, and drives above 2 GB inclusive are given a disk
3126   geometry of 255 heads and 63 sectors.  However, if the BIOS detects that the
3127   Extended Translation setting does not match the geometry in the partition
3128   table, then the translation inferred from the partition table will be used by
3129   the BIOS, and a warning may be displayed.
3130 */
3131
3132 static int BusLogic_BIOSDiskParameters(struct scsi_device *sdev, struct block_device *Device, sector_t capacity, int *Parameters)
3133 {
3134         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) sdev->host->hostdata;
3135         struct BIOS_DiskParameters *DiskParameters = (struct BIOS_DiskParameters *) Parameters;
3136         unsigned char *buf;
3137         if (HostAdapter->ExtendedTranslationEnabled && capacity >= 2 * 1024 * 1024 /* 1 GB in 512 byte sectors */ ) {
3138                 if (capacity >= 4 * 1024 * 1024 /* 2 GB in 512 byte sectors */ ) {
3139                         DiskParameters->Heads = 255;
3140                         DiskParameters->Sectors = 63;
3141                 } else {
3142                         DiskParameters->Heads = 128;
3143                         DiskParameters->Sectors = 32;
3144                 }
3145         } else {
3146                 DiskParameters->Heads = 64;
3147                 DiskParameters->Sectors = 32;
3148         }
3149         DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3150         buf = scsi_bios_ptable(Device);
3151         if (buf == NULL)
3152                 return 0;
3153         /*
3154            If the boot sector partition table flag is valid, search for a partition
3155            table entry whose end_head matches one of the standard BusLogic geometry
3156            translations (64/32, 128/32, or 255/63).
3157          */
3158         if (*(unsigned short *) (buf + 64) == 0xAA55) {
3159                 struct partition *FirstPartitionEntry = (struct partition *) buf;
3160                 struct partition *PartitionEntry = FirstPartitionEntry;
3161                 int SavedCylinders = DiskParameters->Cylinders, PartitionNumber;
3162                 unsigned char PartitionEntryEndHead = 0, PartitionEntryEndSector = 0;
3163                 for (PartitionNumber = 0; PartitionNumber < 4; PartitionNumber++) {
3164                         PartitionEntryEndHead = PartitionEntry->end_head;
3165                         PartitionEntryEndSector = PartitionEntry->end_sector & 0x3F;
3166                         if (PartitionEntryEndHead == 64 - 1) {
3167                                 DiskParameters->Heads = 64;
3168                                 DiskParameters->Sectors = 32;
3169                                 break;
3170                         } else if (PartitionEntryEndHead == 128 - 1) {
3171                                 DiskParameters->Heads = 128;
3172                                 DiskParameters->Sectors = 32;
3173                                 break;
3174                         } else if (PartitionEntryEndHead == 255 - 1) {
3175                                 DiskParameters->Heads = 255;
3176                                 DiskParameters->Sectors = 63;
3177                                 break;
3178                         }
3179                         PartitionEntry++;
3180                 }
3181                 if (PartitionNumber == 4) {
3182                         PartitionEntryEndHead = FirstPartitionEntry->end_head;
3183                         PartitionEntryEndSector = FirstPartitionEntry->end_sector & 0x3F;
3184                 }
3185                 DiskParameters->Cylinders = (unsigned long) capacity / (DiskParameters->Heads * DiskParameters->Sectors);
3186                 if (PartitionNumber < 4 && PartitionEntryEndSector == DiskParameters->Sectors) {
3187                         if (DiskParameters->Cylinders != SavedCylinders)
3188                                 BusLogic_Warning("Adopting Geometry %d/%d from Partition Table\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3189                 } else if (PartitionEntryEndHead > 0 || PartitionEntryEndSector > 0) {
3190                         BusLogic_Warning("Warning: Partition Table appears to " "have Geometry %d/%d which is\n", HostAdapter, PartitionEntryEndHead + 1, PartitionEntryEndSector);
3191                         BusLogic_Warning("not compatible with current BusLogic " "Host Adapter Geometry %d/%d\n", HostAdapter, DiskParameters->Heads, DiskParameters->Sectors);
3192                 }
3193         }
3194         kfree(buf);
3195         return 0;
3196 }
3197
3198
3199 /*
3200   BugLogic_ProcDirectoryInfo implements /proc/scsi/BusLogic/<N>.
3201 */
3202
3203 static int BusLogic_ProcDirectoryInfo(struct Scsi_Host *shost, char *ProcBuffer, char **StartPointer, off_t Offset, int BytesAvailable, int WriteFlag)
3204 {
3205         struct BusLogic_HostAdapter *HostAdapter = (struct BusLogic_HostAdapter *) shost->hostdata;
3206         struct BusLogic_TargetStatistics *TargetStatistics;
3207         int TargetID, Length;
3208         char *Buffer;
3209
3210         TargetStatistics = HostAdapter->TargetStatistics;
3211         if (WriteFlag) {
3212                 HostAdapter->ExternalHostAdapterResets = 0;
3213                 HostAdapter->HostAdapterInternalErrors = 0;
3214                 memset(TargetStatistics, 0, BusLogic_MaxTargetDevices * sizeof(struct BusLogic_TargetStatistics));
3215                 return 0;
3216         }
3217         Buffer = HostAdapter->MessageBuffer;
3218         Length = HostAdapter->MessageBufferLength;
3219         Length += sprintf(&Buffer[Length], "\n\
3220 Current Driver Queue Depth:     %d\n\
3221 Currently Allocated CCBs:       %d\n", HostAdapter->DriverQueueDepth, HostAdapter->AllocatedCCBs);
3222         Length += sprintf(&Buffer[Length], "\n\n\
3223                            DATA TRANSFER STATISTICS\n\
3224 \n\
3225 Target  Tagged Queuing  Queue Depth  Active  Attempted  Completed\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       %s", TargetID, (TargetFlags->TaggedQueuingSupported ? (TargetFlags->TaggedQueuingActive ? "    Active" : (HostAdapter->TaggedQueuingPermitted & (1 << TargetID)
3232                                                                                                                                                                     ? "  Permitted" : "   Disabled"))
3233                                                                           : "Not Supported"));
3234                 Length += sprintf(&Buffer[Length],
3235                                   "         %3d       %3u    %9u        %9u\n", HostAdapter->QueueDepth[TargetID], HostAdapter->ActiveCommands[TargetID], TargetStatistics[TargetID].CommandsAttempted, TargetStatistics[TargetID].CommandsCompleted);
3236         }
3237         Length += sprintf(&Buffer[Length], "\n\
3238 Target  Read Commands  Write Commands   Total Bytes Read    Total Bytes Written\n\
3239 ======  =============  ==============  ===================  ===================\n");
3240         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3241                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3242                 if (!TargetFlags->TargetExists)
3243                         continue;
3244                 Length += sprintf(&Buffer[Length], "  %2d         %9u    %9u", TargetID, TargetStatistics[TargetID].ReadCommands, TargetStatistics[TargetID].WriteCommands);
3245                 if (TargetStatistics[TargetID].TotalBytesRead.Billions > 0)
3246                         Length += sprintf(&Buffer[Length], "     %9u%09u", TargetStatistics[TargetID].TotalBytesRead.Billions, TargetStatistics[TargetID].TotalBytesRead.Units);
3247                 else
3248                         Length += sprintf(&Buffer[Length], "            %9u", TargetStatistics[TargetID].TotalBytesRead.Units);
3249                 if (TargetStatistics[TargetID].TotalBytesWritten.Billions > 0)
3250                         Length += sprintf(&Buffer[Length], "   %9u%09u\n", TargetStatistics[TargetID].TotalBytesWritten.Billions, TargetStatistics[TargetID].TotalBytesWritten.Units);
3251                 else
3252                         Length += sprintf(&Buffer[Length], "         %9u\n", TargetStatistics[TargetID].TotalBytesWritten.Units);
3253         }
3254         Length += sprintf(&Buffer[Length], "\n\
3255 Target  Command    0-1KB      1-2KB      2-4KB      4-8KB     8-16KB\n\
3256 ======  =======  =========  =========  =========  =========  =========\n");
3257         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3258                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3259                 if (!TargetFlags->TargetExists)
3260                         continue;
3261                 Length +=
3262                     sprintf(&Buffer[Length],
3263                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3264                             TargetStatistics[TargetID].ReadCommandSizeBuckets[0],
3265                             TargetStatistics[TargetID].ReadCommandSizeBuckets[1], TargetStatistics[TargetID].ReadCommandSizeBuckets[2], TargetStatistics[TargetID].ReadCommandSizeBuckets[3], TargetStatistics[TargetID].ReadCommandSizeBuckets[4]);
3266                 Length +=
3267                     sprintf(&Buffer[Length],
3268                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3269                             TargetStatistics[TargetID].WriteCommandSizeBuckets[0],
3270                             TargetStatistics[TargetID].WriteCommandSizeBuckets[1], TargetStatistics[TargetID].WriteCommandSizeBuckets[2], TargetStatistics[TargetID].WriteCommandSizeBuckets[3], TargetStatistics[TargetID].WriteCommandSizeBuckets[4]);
3271         }
3272         Length += sprintf(&Buffer[Length], "\n\
3273 Target  Command   16-32KB    32-64KB   64-128KB   128-256KB   256KB+\n\
3274 ======  =======  =========  =========  =========  =========  =========\n");
3275         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3276                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3277                 if (!TargetFlags->TargetExists)
3278                         continue;
3279                 Length +=
3280                     sprintf(&Buffer[Length],
3281                             "  %2d       Read    %9u  %9u  %9u  %9u  %9u\n", TargetID,
3282                             TargetStatistics[TargetID].ReadCommandSizeBuckets[5],
3283                             TargetStatistics[TargetID].ReadCommandSizeBuckets[6], TargetStatistics[TargetID].ReadCommandSizeBuckets[7], TargetStatistics[TargetID].ReadCommandSizeBuckets[8], TargetStatistics[TargetID].ReadCommandSizeBuckets[9]);
3284                 Length +=
3285                     sprintf(&Buffer[Length],
3286                             "  %2d       Write   %9u  %9u  %9u  %9u  %9u\n", TargetID,
3287                             TargetStatistics[TargetID].WriteCommandSizeBuckets[5],
3288                             TargetStatistics[TargetID].WriteCommandSizeBuckets[6], TargetStatistics[TargetID].WriteCommandSizeBuckets[7], TargetStatistics[TargetID].WriteCommandSizeBuckets[8], TargetStatistics[TargetID].WriteCommandSizeBuckets[9]);
3289         }
3290         Length += sprintf(&Buffer[Length], "\n\n\
3291                            ERROR RECOVERY STATISTICS\n\
3292 \n\
3293           Command Aborts      Bus Device Resets   Host Adapter Resets\n\
3294 Target  Requested Completed  Requested Completed  Requested Completed\n\
3295   ID    \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////  \\\\\\\\ Attempted ////\n\
3296 ======   ===== ===== =====    ===== ===== =====    ===== ===== =====\n");
3297         for (TargetID = 0; TargetID < HostAdapter->MaxTargetDevices; TargetID++) {
3298                 struct BusLogic_TargetFlags *TargetFlags = &HostAdapter->TargetFlags[TargetID];
3299                 if (!TargetFlags->TargetExists)
3300                         continue;
3301                 Length += sprintf(&Buffer[Length], "\
3302   %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);
3303         }
3304         Length += sprintf(&Buffer[Length], "\nExternal Host Adapter Resets: %d\n", HostAdapter->ExternalHostAdapterResets);
3305         Length += sprintf(&Buffer[Length], "Host Adapter Internal Errors: %d\n", HostAdapter->HostAdapterInternalErrors);
3306         if (Length >= BusLogic_MessageBufferSize)
3307                 BusLogic_Error("Message Buffer length %d exceeds size %d\n", HostAdapter, Length, BusLogic_MessageBufferSize);
3308         if ((Length -= Offset) <= 0)
3309                 return 0;
3310         if (Length >= BytesAvailable)
3311                 Length = BytesAvailable;
3312         memcpy(ProcBuffer, HostAdapter->MessageBuffer + Offset, Length);
3313         *StartPointer = ProcBuffer;
3314         return Length;
3315 }
3316
3317
3318 /*
3319   BusLogic_Message prints Driver Messages.
3320 */
3321
3322 static void BusLogic_Message(enum BusLogic_MessageLevel MessageLevel, char *Format, struct BusLogic_HostAdapter *HostAdapter, ...)
3323 {
3324         static char Buffer[BusLogic_LineBufferSize];
3325         static bool BeginningOfLine = true;
3326         va_list Arguments;
3327         int Length = 0;
3328         va_start(Arguments, HostAdapter);
3329         Length = vsprintf(Buffer, Format, Arguments);
3330         va_end(Arguments);
3331         if (MessageLevel == BusLogic_AnnounceLevel) {
3332                 static int AnnouncementLines = 0;
3333                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3334                 HostAdapter->MessageBufferLength += Length;
3335                 if (++AnnouncementLines <= 2)
3336                         printk("%sscsi: %s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3337         } else if (MessageLevel == BusLogic_InfoLevel) {
3338                 strcpy(&HostAdapter->MessageBuffer[HostAdapter->MessageBufferLength], Buffer);
3339                 HostAdapter->MessageBufferLength += Length;
3340                 if (BeginningOfLine) {
3341                         if (Buffer[0] != '\n' || Length > 1)
3342                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3343                 } else
3344                         printk("%s", Buffer);
3345         } else {
3346                 if (BeginningOfLine) {
3347                         if (HostAdapter != NULL && HostAdapter->HostAdapterInitialized)
3348                                 printk("%sscsi%d: %s", BusLogic_MessageLevelMap[MessageLevel], HostAdapter->HostNumber, Buffer);
3349                         else
3350                                 printk("%s%s", BusLogic_MessageLevelMap[MessageLevel], Buffer);
3351                 } else
3352                         printk("%s", Buffer);
3353         }
3354         BeginningOfLine = (Buffer[Length - 1] == '\n');
3355 }
3356
3357
3358 /*
3359   BusLogic_ParseKeyword parses an individual option keyword.  It returns true
3360   and updates the pointer if the keyword is recognized and false otherwise.
3361 */
3362
3363 static bool __init BusLogic_ParseKeyword(char **StringPointer, char *Keyword)
3364 {
3365         char *Pointer = *StringPointer;
3366         while (*Keyword != '\0') {
3367                 char StringChar = *Pointer++;
3368                 char KeywordChar = *Keyword++;
3369                 if (StringChar >= 'A' && StringChar <= 'Z')
3370                         StringChar += 'a' - 'Z';
3371                 if (KeywordChar >= 'A' && KeywordChar <= 'Z')
3372                         KeywordChar += 'a' - 'Z';
3373                 if (StringChar != KeywordChar)
3374                         return false;
3375         }
3376         *StringPointer = Pointer;
3377         return true;
3378 }
3379
3380
3381 /*
3382   BusLogic_ParseDriverOptions handles processing of BusLogic Driver Options
3383   specifications.
3384
3385   BusLogic Driver Options may be specified either via the Linux Kernel Command
3386   Line or via the Loadable Kernel Module Installation Facility.  Driver Options
3387   for multiple host adapters may be specified either by separating the option
3388   strings by a semicolon, or by specifying multiple "BusLogic=" strings on the
3389   command line.  Individual option specifications for a single host adapter are
3390   separated by commas.  The Probing and Debugging Options apply to all host
3391   adapters whereas the remaining options apply individually only to the
3392   selected host adapter.
3393
3394   The BusLogic Driver Probing Options are described in
3395   <file:Documentation/scsi/BusLogic.txt>.
3396 */
3397
3398 static int __init BusLogic_ParseDriverOptions(char *OptionsString)
3399 {
3400         while (true) {
3401                 struct BusLogic_DriverOptions *DriverOptions = &BusLogic_DriverOptions[BusLogic_DriverOptionsCount++];
3402                 int TargetID;
3403                 memset(DriverOptions, 0, sizeof(struct BusLogic_DriverOptions));
3404                 while (*OptionsString != '\0' && *OptionsString != ';') {
3405                         /* Probing Options. */
3406                         if (BusLogic_ParseKeyword(&OptionsString, "IO:")) {
3407                                 unsigned long IO_Address = simple_strtoul(OptionsString, &OptionsString, 0);
3408                                 BusLogic_ProbeOptions.LimitedProbeISA = true;
3409                                 switch (IO_Address) {
3410                                 case 0x330:
3411                                         BusLogic_ProbeOptions.Probe330 = true;
3412                                         break;
3413                                 case 0x334:
3414                                         BusLogic_ProbeOptions.Probe334 = true;
3415                                         break;
3416                                 case 0x230:
3417                                         BusLogic_ProbeOptions.Probe230 = true;
3418                                         break;
3419                                 case 0x234:
3420                                         BusLogic_ProbeOptions.Probe234 = true;
3421                                         break;
3422                                 case 0x130:
3423                                         BusLogic_ProbeOptions.Probe130 = true;
3424                                         break;
3425                                 case 0x134:
3426                                         BusLogic_ProbeOptions.Probe134 = true;
3427                                         break;
3428                                 default:
3429                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid I/O Address 0x%X)\n", NULL, IO_Address);
3430                                         return 0;
3431                                 }
3432                         } else if (BusLogic_ParseKeyword(&OptionsString, "NoProbeISA"))
3433                                 BusLogic_ProbeOptions.NoProbeISA = true;
3434                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbePCI"))
3435                                 BusLogic_ProbeOptions.NoProbePCI = true;
3436                         else if (BusLogic_ParseKeyword(&OptionsString, "NoProbe"))
3437                                 BusLogic_ProbeOptions.NoProbe = true;
3438                         else if (BusLogic_ParseKeyword(&OptionsString, "NoSortPCI"))
3439                                 BusLogic_ProbeOptions.NoSortPCI = true;
3440                         else if (BusLogic_ParseKeyword(&OptionsString, "MultiMasterFirst"))
3441                                 BusLogic_ProbeOptions.MultiMasterFirst = true;
3442                         else if (BusLogic_ParseKeyword(&OptionsString, "FlashPointFirst"))
3443                                 BusLogic_ProbeOptions.FlashPointFirst = true;
3444                         /* Tagged Queuing Options. */
3445                         else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:[") || BusLogic_ParseKeyword(&OptionsString, "QD:[")) {
3446                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++) {
3447                                         unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3448                                         if (QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3449                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3450                                                 return 0;
3451                                         }
3452                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3453                                         if (*OptionsString == ',')
3454                                                 OptionsString++;
3455                                         else if (*OptionsString == ']')
3456                                                 break;
3457                                         else {
3458                                                 BusLogic_Error("BusLogic: Invalid Driver Options " "(',' or ']' expected at '%s')\n", NULL, OptionsString);
3459                                                 return 0;
3460                                         }
3461                                 }
3462                                 if (*OptionsString != ']') {
3463                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(']' expected at '%s')\n", NULL, OptionsString);
3464                                         return 0;
3465                                 } else
3466                                         OptionsString++;
3467                         } else if (BusLogic_ParseKeyword(&OptionsString, "QueueDepth:") || BusLogic_ParseKeyword(&OptionsString, "QD:")) {
3468                                 unsigned short QueueDepth = simple_strtoul(OptionsString, &OptionsString, 0);
3469                                 if (QueueDepth == 0 || QueueDepth > BusLogic_MaxTaggedQueueDepth) {
3470                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Queue Depth %d)\n", NULL, QueueDepth);
3471                                         return 0;
3472                                 }
3473                                 DriverOptions->CommonQueueDepth = QueueDepth;
3474                                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3475                                         DriverOptions->QueueDepth[TargetID] = QueueDepth;
3476                         } else if (BusLogic_ParseKeyword(&OptionsString, "TaggedQueuing:") || BusLogic_ParseKeyword(&OptionsString, "TQ:")) {
3477                                 if (BusLogic_ParseKeyword(&OptionsString, "Default")) {
3478                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3479                                         DriverOptions->TaggedQueuingPermittedMask = 0x0000;
3480                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Enable")) {
3481                                         DriverOptions->TaggedQueuingPermitted = 0xFFFF;
3482                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3483                                 } else if (BusLogic_ParseKeyword(&OptionsString, "Disable")) {
3484                                         DriverOptions->TaggedQueuingPermitted = 0x0000;
3485                                         DriverOptions->TaggedQueuingPermittedMask = 0xFFFF;
3486                                 } else {
3487                                         unsigned short TargetBit;
3488                                         for (TargetID = 0, TargetBit = 1; TargetID < BusLogic_MaxTargetDevices; TargetID++, TargetBit <<= 1)
3489                                                 switch (*OptionsString++) {
3490                                                 case 'Y':
3491                                                         DriverOptions->TaggedQueuingPermitted |= TargetBit;
3492                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3493                                                         break;
3494                                                 case 'N':
3495                                                         DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3496                                                         DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3497                                                         break;
3498                                                 case 'X':
3499                                                         break;
3500                                                 default:
3501                                                         OptionsString--;
3502                                                         TargetID = BusLogic_MaxTargetDevices;
3503                                                         break;
3504                                                 }
3505                                 }
3506                         }
3507                         /* Miscellaneous Options. */
3508                         else if (BusLogic_ParseKeyword(&OptionsString, "BusSettleTime:") || BusLogic_ParseKeyword(&OptionsString, "BST:")) {
3509                                 unsigned short BusSettleTime = simple_strtoul(OptionsString, &OptionsString, 0);
3510                                 if (BusSettleTime > 5 * 60) {
3511                                         BusLogic_Error("BusLogic: Invalid Driver Options " "(invalid Bus Settle Time %d)\n", NULL, BusSettleTime);
3512                                         return 0;
3513                                 }
3514                                 DriverOptions->BusSettleTime = BusSettleTime;
3515                         } else if (BusLogic_ParseKeyword(&OptionsString, "InhibitTargetInquiry"))
3516                                 DriverOptions->LocalOptions.InhibitTargetInquiry = true;
3517                         /* Debugging Options. */
3518                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceProbe"))
3519                                 BusLogic_GlobalOptions.TraceProbe = true;
3520                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceHardwareReset"))
3521                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3522                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceConfiguration"))
3523                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3524                         else if (BusLogic_ParseKeyword(&OptionsString, "TraceErrors"))
3525                                 BusLogic_GlobalOptions.TraceErrors = true;
3526                         else if (BusLogic_ParseKeyword(&OptionsString, "Debug")) {
3527                                 BusLogic_GlobalOptions.TraceProbe = true;
3528                                 BusLogic_GlobalOptions.TraceHardwareReset = true;
3529                                 BusLogic_GlobalOptions.TraceConfiguration = true;
3530                                 BusLogic_GlobalOptions.TraceErrors = true;
3531                         }
3532                         if (*OptionsString == ',')
3533                                 OptionsString++;
3534                         else if (*OptionsString != ';' && *OptionsString != '\0') {
3535                                 BusLogic_Error("BusLogic: Unexpected Driver Option '%s' " "ignored\n", NULL, OptionsString);
3536                                 *OptionsString = '\0';
3537                         }
3538                 }
3539                 if (!(BusLogic_DriverOptionsCount == 0 || BusLogic_ProbeInfoCount == 0 || BusLogic_DriverOptionsCount == BusLogic_ProbeInfoCount)) {
3540                         BusLogic_Error("BusLogic: Invalid Driver Options " "(all or no I/O Addresses must be specified)\n", NULL);
3541                         return 0;
3542                 }
3543                 /*
3544                    Tagged Queuing is disabled when the Queue Depth is 1 since queuing
3545                    multiple commands is not possible.
3546                  */
3547                 for (TargetID = 0; TargetID < BusLogic_MaxTargetDevices; TargetID++)
3548                         if (DriverOptions->QueueDepth[TargetID] == 1) {
3549                                 unsigned short TargetBit = 1 << TargetID;
3550                                 DriverOptions->TaggedQueuingPermitted &= ~TargetBit;
3551                                 DriverOptions->TaggedQueuingPermittedMask |= TargetBit;
3552                         }
3553                 if (*OptionsString == ';')
3554                         OptionsString++;
3555                 if (*OptionsString == '\0')
3556                         return 0;
3557         }
3558         return 1;
3559 }
3560
3561 /*
3562   Get it all started
3563 */
3564
3565 static struct scsi_host_template Bus_Logic_template = {
3566         .module = THIS_MODULE,
3567         .proc_name = "BusLogic",
3568         .proc_info = BusLogic_ProcDirectoryInfo,
3569         .name = "BusLogic",
3570         .info = BusLogic_DriverInfo,
3571         .queuecommand = BusLogic_QueueCommand,
3572         .slave_configure = BusLogic_SlaveConfigure,
3573         .bios_param = BusLogic_BIOSDiskParameters,
3574         .eh_host_reset_handler = BusLogic_host_reset,
3575 #if 0
3576         .eh_abort_handler = BusLogic_AbortCommand,
3577 #endif
3578         .unchecked_isa_dma = 1,
3579         .max_sectors = 128,
3580         .use_clustering = ENABLE_CLUSTERING,
3581 };
3582
3583 /*
3584   BusLogic_Setup handles processing of Kernel Command Line Arguments.
3585 */
3586
3587 static int __init BusLogic_Setup(char *str)
3588 {
3589         int ints[3];
3590
3591         (void) get_options(str, ARRAY_SIZE(ints), ints);
3592
3593         if (ints[0] != 0) {
3594                 BusLogic_Error("BusLogic: Obsolete Command Line Entry " "Format Ignored\n", NULL);
3595                 return 0;
3596         }
3597         if (str == NULL || *str == '\0')
3598                 return 0;
3599         return BusLogic_ParseDriverOptions(str);
3600 }
3601
3602 /*
3603  * Exit function.  Deletes all hosts associated with this driver.
3604  */
3605
3606 static void __exit BusLogic_exit(void)
3607 {
3608         struct BusLogic_HostAdapter *ha, *next;
3609
3610         list_for_each_entry_safe(ha, next, &BusLogic_host_list, host_list)
3611                 BusLogic_ReleaseHostAdapter(ha);
3612 }
3613
3614 __setup("BusLogic=", BusLogic_Setup);
3615
3616 #ifdef MODULE
3617 static struct pci_device_id BusLogic_pci_tbl[] __devinitdata = {
3618         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER,
3619           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3620         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_MULTIMASTER_NC,
3621           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3622         { PCI_VENDOR_ID_BUSLOGIC, PCI_DEVICE_ID_BUSLOGIC_FLASHPOINT,
3623           PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
3624         { }
3625 };
3626 #endif
3627 MODULE_DEVICE_TABLE(pci, BusLogic_pci_tbl);
3628
3629 module_init(BusLogic_init);
3630 module_exit(BusLogic_exit);