drivers/usb/storage/isd200.c

   1 /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
   2  *
   3  * $Id: isd200.c,v 1.16 2002/04/22 03:39:43 mdharm Exp $
   4  *
   5  * Current development and maintenance:
   6  *   (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
   7  *
   8  * Developed with the assistance of:
   9  *   (C) 2002 Alan Stern <stern@rowland.org>
  10  *
  11  * Initial work:
  12  *   (C) 2000 In-System Design, Inc. (support@in-system.com)
  13  *
  14  * The ISD200 ASIC does not natively support ATA devices.  The chip
  15  * does implement an interface, the ATA Command Block (ATACB) which provides
  16  * a means of passing ATA commands and ATA register accesses to a device.
  17  *
  18  * This program is free software; you can redistribute it and/or modify it
  19  * under the terms of the GNU General Public License as published by the
  20  * Free Software Foundation; either version 2, or (at your option) any
  21  * later version.
  22  *
  23  * This program is distributed in the hope that it will be useful, but
  24  * WITHOUT ANY WARRANTY; without even the implied warranty of
  25  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  26  * General Public License for more details.
  27  *
  28  * You should have received a copy of the GNU General Public License along
  29  * with this program; if not, write to the Free Software Foundation, Inc.,
  30  * 675 Mass Ave, Cambridge, MA 02139, USA.
  31  *
  32  * History:
  33  *
  34  *  2002-10-19: Removed the specialized transfer routines.
  35  *              (Alan Stern <stern@rowland.harvard.edu>)
  36  *  2001-02-24: Removed lots of duplicate code and simplified the structure.
  37  *            (bjorn@haxx.se)
  38  *  2002-01-16: Fixed endianness bug so it works on the ppc arch.
  39  *            (Luc Saillard <luc@saillard.org>)
  40  *  2002-01-17: All bitfields removed.
  41  *            (bjorn@haxx.se)
  42  */
  43
  44
  45 /* Include files */
  46
  47 #include "transport.h"
  48 #include "protocol.h"
  49 #include "usb.h"
  50 #include "debug.h"
  51 #include "scsiglue.h"
  52 #include "isd200.h"
  53
  54 #include <linux/jiffies.h>
  55 #include <linux/errno.h>
  56 #include <linux/slab.h>
  57 #include <linux/hdreg.h>
  58 #include <linux/ide.h>
  59
  60 /* Timeout defines (in Seconds) */
  61
  62 #define ISD200_ENUM_BSY_TIMEOUT         35
  63 #define ISD200_ENUM_DETECT_TIMEOUT      30
  64 #define ISD200_DEFAULT_TIMEOUT          30
  65
  66 /* device flags */
  67 #define DF_ATA_DEVICE           0x0001
  68 #define DF_MEDIA_STATUS_ENABLED 0x0002
  69 #define DF_REMOVABLE_MEDIA      0x0004
  70
  71 /* capability bit definitions */
  72 #define CAPABILITY_DMA          0x01
  73 #define CAPABILITY_LBA          0x02
  74
  75 /* command_setX bit definitions */
  76 #define COMMANDSET_REMOVABLE    0x02
  77 #define COMMANDSET_MEDIA_STATUS 0x10
  78
  79 /* ATA Vendor Specific defines */
  80 #define ATA_ADDRESS_DEVHEAD_STD      0xa0
  81 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
  82 #define ATA_ADDRESS_DEVHEAD_SLAVE    0x10
  83
  84 /* Action Select bits */
  85 #define ACTION_SELECT_0      0x01
  86 #define ACTION_SELECT_1      0x02
  87 #define ACTION_SELECT_2      0x04
  88 #define ACTION_SELECT_3      0x08
  89 #define ACTION_SELECT_4      0x10
  90 #define ACTION_SELECT_5      0x20
  91 #define ACTION_SELECT_6      0x40
  92 #define ACTION_SELECT_7      0x80
  93
  94 /* Register Select bits */
  95 #define REG_ALTERNATE_STATUS    0x01
  96 #define REG_DEVICE_CONTROL      0x01
  97 #define REG_ERROR               0x02
  98 #define REG_FEATURES            0x02
  99 #define REG_SECTOR_COUNT        0x04
 100 #define REG_SECTOR_NUMBER       0x08
 101 #define REG_CYLINDER_LOW        0x10
 102 #define REG_CYLINDER_HIGH       0x20
 103 #define REG_DEVICE_HEAD         0x40
 104 #define REG_STATUS              0x80
 105 #define REG_COMMAND             0x80
 106
 107 /* ATA error definitions not in <linux/hdreg.h> */
 108 #define ATA_ERROR_MEDIA_CHANGE          0x20
 109
 110 /* ATA command definitions not in <linux/hdreg.h> */
 111 #define ATA_COMMAND_GET_MEDIA_STATUS    0xDA
 112 #define ATA_COMMAND_MEDIA_EJECT         0xED
 113
 114 /* ATA drive control definitions */
 115 #define ATA_DC_DISABLE_INTERRUPTS       0x02
 116 #define ATA_DC_RESET_CONTROLLER         0x04
 117 #define ATA_DC_REENABLE_CONTROLLER      0x00
 118
 119 /*
 120  *  General purpose return codes
 121  */
 122
 123 #define ISD200_ERROR            -1
 124 #define ISD200_GOOD              0
 125
 126 /*
 127  * Transport return codes
 128  */
 129
 130 #define ISD200_TRANSPORT_GOOD       0   /* Transport good, command good     */
 131 #define ISD200_TRANSPORT_FAILED     1   /* Transport good, command failed   */
 132 #define ISD200_TRANSPORT_ERROR      2   /* Transport bad (i.e. device dead) */
 133
 134 /* driver action codes */
 135 #define ACTION_READ_STATUS      0
 136 #define ACTION_RESET            1
 137 #define ACTION_REENABLE         2
 138 #define ACTION_SOFT_RESET       3
 139 #define ACTION_ENUM             4
 140 #define ACTION_IDENTIFY         5
 141
 142
 143 /*
 144  * ata_cdb struct
 145  */
 146
 147
 148 union ata_cdb {
 149         struct {
 150                 unsigned char SignatureByte0;
 151                 unsigned char SignatureByte1;
 152                 unsigned char ActionSelect;
 153                 unsigned char RegisterSelect;
 154                 unsigned char TransferBlockSize;
 155                 unsigned char WriteData3F6;
 156                 unsigned char WriteData1F1;
 157                 unsigned char WriteData1F2;
 158                 unsigned char WriteData1F3;
 159                 unsigned char WriteData1F4;
 160                 unsigned char WriteData1F5;
 161                 unsigned char WriteData1F6;
 162                 unsigned char WriteData1F7;
 163                 unsigned char Reserved[3];
 164         } generic;
 165
 166         struct {
 167                 unsigned char SignatureByte0;
 168                 unsigned char SignatureByte1;
 169                 unsigned char ActionSelect;
 170                 unsigned char RegisterSelect;
 171                 unsigned char TransferBlockSize;
 172                 unsigned char AlternateStatusByte;
 173                 unsigned char ErrorByte;
 174                 unsigned char SectorCountByte;
 175                 unsigned char SectorNumberByte;
 176                 unsigned char CylinderLowByte;
 177                 unsigned char CylinderHighByte;
 178                 unsigned char DeviceHeadByte;
 179                 unsigned char StatusByte;
 180                 unsigned char Reserved[3];
 181         } read;
 182
 183         struct {
 184                 unsigned char SignatureByte0;
 185                 unsigned char SignatureByte1;
 186                 unsigned char ActionSelect;
 187                 unsigned char RegisterSelect;
 188                 unsigned char TransferBlockSize;
 189                 unsigned char DeviceControlByte;
 190                 unsigned char FeaturesByte;
 191                 unsigned char SectorCountByte;
 192                 unsigned char SectorNumberByte;
 193                 unsigned char CylinderLowByte;
 194                 unsigned char CylinderHighByte;
 195                 unsigned char DeviceHeadByte;
 196                 unsigned char CommandByte;
 197                 unsigned char Reserved[3];
 198         } write;
 199 };
 200
 201
 202 /*
 203  * Inquiry data structure. This is the data returned from the target
 204  * after it receives an inquiry.
 205  *
 206  * This structure may be extended by the number of bytes specified
 207  * in the field AdditionalLength. The defined size constant only
 208  * includes fields through ProductRevisionLevel.
 209  */
 210
 211 /*
 212  * DeviceType field
 213  */
 214 #define DIRECT_ACCESS_DEVICE        0x00    /* disks */
 215 #define DEVICE_REMOVABLE                0x80
 216
 217 struct inquiry_data {
 218         unsigned char DeviceType;
 219         unsigned char DeviceTypeModifier;
 220         unsigned char Versions;
 221         unsigned char Format;
 222         unsigned char AdditionalLength;
 223         unsigned char Reserved[2];
 224         unsigned char Capability;
 225         unsigned char VendorId[8];
 226         unsigned char ProductId[16];
 227         unsigned char ProductRevisionLevel[4];
 228         unsigned char VendorSpecific[20];
 229         unsigned char Reserved3[40];
 230 } __attribute__ ((packed));
 231
 232 /*
 233  * INQUIRY data buffer size
 234  */
 235
 236 #define INQUIRYDATABUFFERSIZE 36
 237
 238
 239 /*
 240  * ISD200 CONFIG data struct
 241  */
 242
 243 #define ATACFG_TIMING     0x0f
 244 #define ATACFG_ATAPI_RESET     0x10
 245 #define ATACFG_MASTER     0x20
 246 #define ATACFG_BLOCKSIZE       0xa0
 247
 248 #define ATACFGE_LAST_LUN       0x07
 249 #define ATACFGE_DESC_OVERRIDE  0x08
 250 #define ATACFGE_STATE_SUSPEND  0x10
 251 #define ATACFGE_SKIP_BOOT      0x20
 252 #define ATACFGE_CONF_DESC2     0x40
 253 #define ATACFGE_INIT_STATUS    0x80
 254
 255 #define CFG_CAPABILITY_SRST    0x01
 256
 257 struct isd200_config {
 258         unsigned char EventNotification;
 259         unsigned char ExternalClock;
 260         unsigned char ATAInitTimeout;
 261         unsigned char ATAConfig;
 262         unsigned char ATAMajorCommand;
 263         unsigned char ATAMinorCommand;
 264         unsigned char ATAExtraConfig;
 265         unsigned char Capability;
 266 }__attribute__ ((packed));
 267
 268
 269 /*
 270  * ISD200 driver information struct
 271  */
 272
 273 struct isd200_info {
 274         struct inquiry_data InquiryData;
 275         struct hd_driveid drive;
 276         struct isd200_config ConfigData;
 277         unsigned char ATARegs[8];
 278         unsigned char DeviceHead;
 279         unsigned char DeviceFlags;
 280
 281         /* maximum number of LUNs supported */
 282         unsigned char MaxLUNs;
 283 };
 284
 285
 286 /*
 287  * Read Capacity Data - returned in Big Endian format
 288  */
 289
 290 struct read_capacity_data {
 291         unsigned long LogicalBlockAddress;
 292         unsigned long BytesPerBlock;
 293 };
 294
 295 /*
 296  * Read Block Limits Data - returned in Big Endian format
 297  * This structure returns the maximum and minimum block
 298  * size for a TAPE device.
 299  */
 300
 301 struct read_block_limits {
 302         unsigned char Reserved;
 303         unsigned char BlockMaximumSize[3];
 304         unsigned char BlockMinimumSize[2];
 305 };
 306
 307
 308 /*
 309  * Sense Data Format
 310  */
 311
 312 #define SENSE_ERRCODE      0x7f
 313 #define SENSE_ERRCODE_VALID     0x80
 314 #define SENSE_FLAG_SENSE_KEY    0x0f
 315 #define SENSE_FLAG_BAD_LENGTH   0x20
 316 #define SENSE_FLAG_END_OF_MEDIA 0x40
 317 #define SENSE_FLAG_FILE_MARK    0x80
 318 struct sense_data {
 319         unsigned char ErrorCode;
 320         unsigned char SegmentNumber;
 321         unsigned char Flags;
 322         unsigned char Information[4];
 323         unsigned char AdditionalSenseLength;
 324         unsigned char CommandSpecificInformation[4];
 325         unsigned char AdditionalSenseCode;
 326         unsigned char AdditionalSenseCodeQualifier;
 327         unsigned char FieldReplaceableUnitCode;
 328         unsigned char SenseKeySpecific[3];
 329 } __attribute__ ((packed));
 330
 331 /*
 332  * Default request sense buffer size
 333  */
 334
 335 #define SENSE_BUFFER_SIZE 18
 336
 337 /***********************************************************************
 338  * Helper routines
 339  ***********************************************************************/
 340
 341 /**************************************************************************
 342  * isd200_build_sense
 343  *
 344  *  Builds an artificial sense buffer to report the results of a
 345  *  failed command.
 346  *
 347  * RETURNS:
 348  *    void
 349  */
 350 void isd200_build_sense(struct us_data *us, Scsi_Cmnd *srb)
 351 {
 352         struct isd200_info *info = (struct isd200_info *)us->extra;
 353         struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
 354         unsigned char error = info->ATARegs[IDE_ERROR_OFFSET];
 355
 356         if(error & ATA_ERROR_MEDIA_CHANGE) {
 357                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 358                 buf->AdditionalSenseLength = 0xb;
 359                 buf->Flags = UNIT_ATTENTION;
 360                 buf->AdditionalSenseCode = 0;
 361                 buf->AdditionalSenseCodeQualifier = 0;
 362         } else if(error & MCR_ERR) {
 363                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 364                 buf->AdditionalSenseLength = 0xb;
 365                 buf->Flags =  UNIT_ATTENTION;
 366                 buf->AdditionalSenseCode = 0;
 367                 buf->AdditionalSenseCodeQualifier = 0;
 368         } else if(error & TRK0_ERR) {
 369                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 370                 buf->AdditionalSenseLength = 0xb;
 371                 buf->Flags =  NOT_READY;
 372                 buf->AdditionalSenseCode = 0;
 373                 buf->AdditionalSenseCodeQualifier = 0;
 374         } else if(error & ECC_ERR) {
 375                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 376                 buf->AdditionalSenseLength = 0xb;
 377                 buf->Flags =  DATA_PROTECT;
 378                 buf->AdditionalSenseCode = 0;
 379                 buf->AdditionalSenseCodeQualifier = 0;
 380         } else {
 381                 buf->ErrorCode = 0;
 382                 buf->AdditionalSenseLength = 0;
 383                 buf->Flags =  0;
 384                 buf->AdditionalSenseCode = 0;
 385                 buf->AdditionalSenseCodeQualifier = 0;
 386         }
 387 }
 388
 389
 390 /***********************************************************************
 391  * Transport routines
 392  ***********************************************************************/
 393
 394
 395 /**************************************************************************
 396  *  isd200_action
 397  *
 398  * Routine for sending commands to the isd200
 399  *
 400  * RETURNS:
 401  *    ISD status code
 402  */
 403 static int isd200_action( struct us_data *us, int action,
 404                           void* pointer, int value )
 405 {
 406         union ata_cdb ata;
 407         struct scsi_cmnd srb;
 408         struct scsi_device srb_dev;
 409         struct isd200_info *info = (struct isd200_info *)us->extra;
 410         int status;
 411
 412         memset(&ata, 0, sizeof(ata));
 413         memset(&srb, 0, sizeof(srb));
 414         memset(&srb_dev, 0, sizeof(srb_dev));
 415         srb.device = &srb_dev;
 416
 417         ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
 418         ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
 419         ata.generic.TransferBlockSize = 1;
 420
 421         switch ( action ) {
 422         case ACTION_READ_STATUS:
 423                 US_DEBUGP("   isd200_action(READ_STATUS)\n");
 424                 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
 425                 ata.generic.RegisterSelect =
 426                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
 427                   REG_STATUS | REG_ERROR;
 428                 srb.sc_data_direction = SCSI_DATA_READ;
 429                 srb.request_buffer = pointer;
 430                 srb.request_bufflen = value;
 431                 break;
 432
 433         case ACTION_ENUM:
 434                 US_DEBUGP("   isd200_action(ENUM,0x%02x)\n",value);
 435                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 436                                            ACTION_SELECT_3|ACTION_SELECT_4|
 437                                            ACTION_SELECT_5;
 438                 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
 439                 ata.write.DeviceHeadByte = value;
 440                 srb.sc_data_direction = SCSI_DATA_NONE;
 441                 break;
 442
 443         case ACTION_RESET:
 444                 US_DEBUGP("   isd200_action(RESET)\n");
 445                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 446                                            ACTION_SELECT_3|ACTION_SELECT_4;
 447                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 448                 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
 449                 srb.sc_data_direction = SCSI_DATA_NONE;
 450                 break;
 451
 452         case ACTION_REENABLE:
 453                 US_DEBUGP("   isd200_action(REENABLE)\n");
 454                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 455                                            ACTION_SELECT_3|ACTION_SELECT_4;
 456                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 457                 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
 458                 srb.sc_data_direction = SCSI_DATA_NONE;
 459                 break;
 460
 461         case ACTION_SOFT_RESET:
 462                 US_DEBUGP("   isd200_action(SOFT_RESET)\n");
 463                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
 464                 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
 465                 ata.write.DeviceHeadByte = info->DeviceHead;
 466                 ata.write.CommandByte = WIN_SRST;
 467                 srb.sc_data_direction = SCSI_DATA_NONE;
 468                 break;
 469
 470         case ACTION_IDENTIFY:
 471                 US_DEBUGP("   isd200_action(IDENTIFY)\n");
 472                 ata.generic.RegisterSelect = REG_COMMAND;
 473                 ata.write.CommandByte = WIN_IDENTIFY;
 474                 srb.sc_data_direction = SCSI_DATA_READ;
 475                 srb.request_buffer = (void *)&info->drive;
 476                 srb.request_bufflen = sizeof(struct hd_driveid);
 477                 break;
 478
 479         default:
 480                 US_DEBUGP("Error: Undefined action %d\n",action);
 481                 break;
 482         }
 483
 484         memcpy(srb.cmnd, &ata, sizeof(ata.generic));
 485         srb.cmd_len = sizeof(ata.generic);
 486         status = usb_stor_Bulk_transport(&srb, us);
 487         if (status == USB_STOR_TRANSPORT_GOOD)
 488                 status = ISD200_GOOD;
 489         else {
 490                 US_DEBUGP("   isd200_action(0x%02x) error: %d\n",action,status);
 491                 status = ISD200_ERROR;
 492                 /* need to reset device here */
 493         }
 494
 495         return status;
 496 }
 497
 498 /**************************************************************************
 499  * isd200_read_regs
 500  *
 501  * Read ATA Registers
 502  *
 503  * RETURNS:
 504  *    ISD status code
 505  */
 506 int isd200_read_regs( struct us_data *us )
 507 {
 508         struct isd200_info *info = (struct isd200_info *)us->extra;
 509         int retStatus = ISD200_GOOD;
 510         int transferStatus;
 511
 512         US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
 513
 514         transferStatus = isd200_action( us, ACTION_READ_STATUS,
 515                                     info->ATARegs, sizeof(info->ATARegs) );
 516         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 517                 US_DEBUGP("   Error reading ATA registers\n");
 518                 retStatus = ISD200_ERROR;
 519         } else {
 520                 US_DEBUGP("   Got ATA Register[IDE_ERROR_OFFSET] = 0x%x\n",
 521                           info->ATARegs[IDE_ERROR_OFFSET]);
 522         }
 523
 524         return retStatus;
 525 }
 526
 527
 528 /**************************************************************************
 529  * Invoke the transport and basic error-handling/recovery methods
 530  *
 531  * This is used by the protocol layers to actually send the message to
 532  * the device and receive the response.
 533  */
 534 void isd200_invoke_transport( struct us_data *us,
 535                               Scsi_Cmnd *srb,
 536                               union ata_cdb *ataCdb )
 537 {
 538         int need_auto_sense = 0;
 539         int transferStatus;
 540         int result;
 541
 542         /* send the command to the transport layer */
 543         srb->resid = 0;
 544         memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
 545         srb->cmd_len = sizeof(ataCdb->generic);
 546         transferStatus = usb_stor_Bulk_transport(srb, us);
 547
 548         /* if the command gets aborted by the higher layers, we need to
 549          * short-circuit all other processing
 550          */
 551         if (us->sm_state == US_STATE_ABORTING) {
 552                 US_DEBUGP("-- command was aborted\n");
 553                 goto Handle_Abort;
 554         }
 555
 556         switch (transferStatus) {
 557
 558         case USB_STOR_TRANSPORT_GOOD:
 559                 /* Indicate a good result */
 560                 srb->result = SAM_STAT_GOOD;
 561                 break;
 562
 563         case USB_STOR_TRANSPORT_NO_SENSE:
 564                 US_DEBUGP("-- transport indicates protocol failure\n");
 565                 srb->result = SAM_STAT_CHECK_CONDITION;
 566                 return;
 567
 568         case USB_STOR_TRANSPORT_FAILED:
 569                 US_DEBUGP("-- transport indicates command failure\n");
 570                 need_auto_sense = 1;
 571                 break;
 572
 573         case USB_STOR_TRANSPORT_ERROR:
 574                 US_DEBUGP("-- transport indicates transport error\n");
 575                 srb->result = DID_ERROR << 16;
 576                 /* Need reset here */
 577                 return;
 578
 579         default:
 580                 US_DEBUGP("-- transport indicates unknown error\n");
 581                 srb->result = DID_ERROR << 16;
 582                 /* Need reset here */
 583                 return;
 584         }
 585
 586         if ((srb->resid > 0) &&
 587             !((srb->cmnd[0] == REQUEST_SENSE) ||
 588               (srb->cmnd[0] == INQUIRY) ||
 589               (srb->cmnd[0] == MODE_SENSE) ||
 590               (srb->cmnd[0] == LOG_SENSE) ||
 591               (srb->cmnd[0] == MODE_SENSE_10))) {
 592                 US_DEBUGP("-- unexpectedly short transfer\n");
 593                 need_auto_sense = 1;
 594         }
 595
 596         if (need_auto_sense) {
 597                 result = isd200_read_regs(us);
 598                 if (us->sm_state == US_STATE_ABORTING) {
 599                         US_DEBUGP("-- auto-sense aborted\n");
 600                         goto Handle_Abort;
 601                 }
 602                 if (result == ISD200_GOOD) {
 603                         isd200_build_sense(us, srb);
 604                         srb->result = SAM_STAT_CHECK_CONDITION;
 605
 606                         /* If things are really okay, then let's show that */
 607                         if ((srb->sense_buffer[2] & 0xf) == 0x0)
 608                                 srb->result = SAM_STAT_GOOD;
 609                 } else {
 610                         srb->result = DID_ERROR << 16;
 611                         /* Need reset here */
 612                 }
 613         }
 614
 615         /* Regardless of auto-sense, if we _know_ we have an error
 616          * condition, show that in the result code
 617          */
 618         if (transferStatus == USB_STOR_TRANSPORT_FAILED)
 619                 srb->result = SAM_STAT_CHECK_CONDITION;
 620         return;
 621
 622         /* abort processing: the bulk-only transport requires a reset
 623          * following an abort */
 624         Handle_Abort:
 625         srb->result = DID_ABORT << 16;
 626
 627         /* permit the reset transfer to take place */
 628         clear_bit(US_FLIDX_ABORTING, &us->flags);
 629         /* Need reset here */
 630 }
 631
 632 #ifdef CONFIG_USB_STORAGE_DEBUG
 633 static void isd200_log_config( struct isd200_info* info )
 634 {
 635         US_DEBUGP("      Event Notification: 0x%x\n",
 636                   info->ConfigData.EventNotification);
 637         US_DEBUGP("      External Clock: 0x%x\n",
 638                   info->ConfigData.ExternalClock);
 639         US_DEBUGP("      ATA Init Timeout: 0x%x\n",
 640                   info->ConfigData.ATAInitTimeout);
 641         US_DEBUGP("      ATAPI Command Block Size: 0x%x\n",
 642                   (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
 643         US_DEBUGP("      Master/Slave Selection: 0x%x\n",
 644                   info->ConfigData.ATAConfig & ATACFG_MASTER);
 645         US_DEBUGP("      ATAPI Reset: 0x%x\n",
 646                   info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
 647         US_DEBUGP("      ATA Timing: 0x%x\n",
 648                   info->ConfigData.ATAConfig & ATACFG_TIMING);
 649         US_DEBUGP("      ATA Major Command: 0x%x\n",
 650                   info->ConfigData.ATAMajorCommand);
 651         US_DEBUGP("      ATA Minor Command: 0x%x\n",
 652                   info->ConfigData.ATAMinorCommand);
 653         US_DEBUGP("      Init Status: 0x%x\n",
 654                   info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
 655         US_DEBUGP("      Config Descriptor 2: 0x%x\n",
 656                   info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
 657         US_DEBUGP("      Skip Device Boot: 0x%x\n",
 658                   info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
 659         US_DEBUGP("      ATA 3 State Supsend: 0x%x\n",
 660                   info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
 661         US_DEBUGP("      Descriptor Override: 0x%x\n",
 662                   info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
 663         US_DEBUGP("      Last LUN Identifier: 0x%x\n",
 664                   info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
 665         US_DEBUGP("      SRST Enable: 0x%x\n",
 666                   info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
 667 }
 668 #endif
 669
 670 /**************************************************************************
 671  * isd200_write_config
 672  *
 673  * Write the ISD200 Configuration data
 674  *
 675  * RETURNS:
 676  *    ISD status code
 677  */
 678 int isd200_write_config( struct us_data *us )
 679 {
 680         struct isd200_info *info = (struct isd200_info *)us->extra;
 681         int retStatus = ISD200_GOOD;
 682         int result;
 683
 684 #ifdef CONFIG_USB_STORAGE_DEBUG
 685         US_DEBUGP("Entering isd200_write_config\n");
 686         US_DEBUGP("   Writing the following ISD200 Config Data:\n");
 687         isd200_log_config(info);
 688 #endif
 689
 690         /* let's send the command via the control pipe */
 691         result = usb_stor_ctrl_transfer(
 692                 us,
 693                 us->send_ctrl_pipe,
 694                 0x01,
 695                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 696                 0x0000,
 697                 0x0002,
 698                 (void *) &info->ConfigData,
 699                 sizeof(info->ConfigData));
 700
 701         if (result >= 0) {
 702                 US_DEBUGP("   ISD200 Config Data was written successfully\n");
 703         } else {
 704                 US_DEBUGP("   Request to write ISD200 Config Data failed!\n");
 705                 retStatus = ISD200_ERROR;
 706         }
 707
 708         US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
 709         return retStatus;
 710 }
 711
 712
 713 /**************************************************************************
 714  * isd200_read_config
 715  *
 716  * Reads the ISD200 Configuration data
 717  *
 718  * RETURNS:
 719  *    ISD status code
 720  */
 721 int isd200_read_config( struct us_data *us )
 722 {
 723         struct isd200_info *info = (struct isd200_info *)us->extra;
 724         int retStatus = ISD200_GOOD;
 725         int result;
 726
 727         US_DEBUGP("Entering isd200_read_config\n");
 728
 729         /* read the configuration information from ISD200.  Use this to */
 730         /* determine what the special ATA CDB bytes are.                */
 731
 732         result = usb_stor_ctrl_transfer(
 733                 us,
 734                 us->recv_ctrl_pipe,
 735                 0x02,
 736                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 737                 0x0000,
 738                 0x0002,
 739                 (void *) &info->ConfigData,
 740                 sizeof(info->ConfigData));
 741
 742
 743         if (result >= 0) {
 744                 US_DEBUGP("   Retrieved the following ISD200 Config Data:\n");
 745 #ifdef CONFIG_USB_STORAGE_DEBUG
 746                 isd200_log_config(info);
 747 #endif
 748         } else {
 749                 US_DEBUGP("   Request to get ISD200 Config Data failed!\n");
 750                 retStatus = ISD200_ERROR;
 751         }
 752
 753         US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
 754         return retStatus;
 755 }
 756
 757
 758 /**************************************************************************
 759  * isd200_atapi_soft_reset
 760  *
 761  * Perform an Atapi Soft Reset on the device
 762  *
 763  * RETURNS:
 764  *    NT status code
 765  */
 766 int isd200_atapi_soft_reset( struct us_data *us )
 767 {
 768         int retStatus = ISD200_GOOD;
 769         int transferStatus;
 770
 771         US_DEBUGP("Entering isd200_atapi_soft_reset\n");
 772
 773         transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
 774         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 775                 US_DEBUGP("   Error issuing Atapi Soft Reset\n");
 776                 retStatus = ISD200_ERROR;
 777         }
 778
 779         US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
 780         return retStatus;
 781 }
 782
 783
 784 /**************************************************************************
 785  * isd200_srst
 786  *
 787  * Perform an SRST on the device
 788  *
 789  * RETURNS:
 790  *    ISD status code
 791  */
 792 int isd200_srst( struct us_data *us )
 793 {
 794         int retStatus = ISD200_GOOD;
 795         int transferStatus;
 796
 797         US_DEBUGP("Entering isd200_SRST\n");
 798
 799         transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
 800
 801         /* check to see if this request failed */
 802         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 803                 US_DEBUGP("   Error issuing SRST\n");
 804                 retStatus = ISD200_ERROR;
 805         } else {
 806                 /* delay 10ms to give the drive a chance to see it */
 807                 wait_ms(10);
 808
 809                 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
 810                 if (transferStatus != ISD200_TRANSPORT_GOOD) {
 811                         US_DEBUGP("   Error taking drive out of reset\n");
 812                         retStatus = ISD200_ERROR;
 813                 } else {
 814                         /* delay 50ms to give the drive a chance to recover after SRST */
 815                         wait_ms(50);
 816                 }
 817         }
 818
 819         US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
 820         return retStatus;
 821 }
 822
 823
 824 /**************************************************************************
 825  * isd200_try_enum
 826  *
 827  * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
 828  * and tries to analyze the status registers
 829  *
 830  * RETURNS:
 831  *    ISD status code
 832  */
 833 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
 834                            int detect )
 835 {
 836         int status = ISD200_GOOD;
 837         unsigned char regs[8];
 838         unsigned long endTime;
 839         struct isd200_info *info = (struct isd200_info *)us->extra;
 840         int recheckAsMaster = FALSE;
 841
 842         if ( detect )
 843                 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
 844         else
 845                 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
 846
 847         /* loop until we detect !BSY or timeout */
 848         while(TRUE) {
 849 #ifdef CONFIG_USB_STORAGE_DEBUG
 850                 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
 851                         "Master" : "Slave";
 852 #endif
 853
 854                 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
 855                 if ( status != ISD200_GOOD )
 856                         break;
 857
 858                 status = isd200_action( us, ACTION_READ_STATUS,
 859                                         regs, sizeof(regs) );
 860                 if ( status != ISD200_GOOD )
 861                         break;
 862
 863                 if (!detect) {
 864                         if (regs[IDE_STATUS_OFFSET] & BUSY_STAT ) {
 865                                 US_DEBUGP("   %s status is still BSY, try again...\n",mstr);
 866                         } else {
 867                                 US_DEBUGP("   %s status !BSY, continue with next operation\n",mstr);
 868                                 break;
 869                         }
 870                 }
 871                 /* check for BUSY_STAT and */
 872                 /* WRERR_STAT (workaround ATA Zip drive) and */
 873                 /* ERR_STAT (workaround for Archos CD-ROM) */
 874                 else if (regs[IDE_STATUS_OFFSET] &
 875                          (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
 876                         US_DEBUGP("   Status indicates it is not ready, try again...\n");
 877                 }
 878                 /* check for DRDY, ATA devices set DRDY after SRST */
 879                 else if (regs[IDE_STATUS_OFFSET] & READY_STAT) {
 880                         US_DEBUGP("   Identified ATA device\n");
 881                         info->DeviceFlags |= DF_ATA_DEVICE;
 882                         info->DeviceHead = master_slave;
 883                         break;
 884                 }
 885                 /* check Cylinder High/Low to
 886                    determine if it is an ATAPI device
 887                 */
 888                 else if ((regs[IDE_HCYL_OFFSET] == 0xEB) &&
 889                          (regs[IDE_LCYL_OFFSET] == 0x14)) {
 890                         /* It seems that the RICOH
 891                            MP6200A CD/RW drive will
 892                            report itself okay as a
 893                            slave when it is really a
 894                            master. So this check again
 895                            as a master device just to
 896                            make sure it doesn't report
 897                            itself okay as a master also
 898                         */
 899                         if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
 900                             (recheckAsMaster == FALSE)) {
 901                                 US_DEBUGP("   Identified ATAPI device as slave.  Rechecking again as master\n");
 902                                 recheckAsMaster = TRUE;
 903                                 master_slave = ATA_ADDRESS_DEVHEAD_STD;
 904                         } else {
 905                                 US_DEBUGP("   Identified ATAPI device\n");
 906                                 info->DeviceHead = master_slave;
 907
 908                                 status = isd200_atapi_soft_reset(us);
 909                                 break;
 910                         }
 911                 } else {
 912                         US_DEBUGP("   Not ATA, not ATAPI. Weird.\n");
 913                         break;
 914                 }
 915
 916                 /* check for timeout on this request */
 917                 if (time_after_eq(jiffies, endTime)) {
 918                         if (!detect)
 919                                 US_DEBUGP("   BSY check timeout, just continue with next operation...\n");
 920                         else
 921                                 US_DEBUGP("   Device detect timeout!\n");
 922                         break;
 923                 }
 924         }
 925
 926         return status;
 927 }
 928
 929 /**************************************************************************
 930  * isd200_manual_enum
 931  *
 932  * Determines if the drive attached is an ATA or ATAPI and if it is a
 933  * master or slave.
 934  *
 935  * RETURNS:
 936  *    ISD status code
 937  */
 938 int isd200_manual_enum(struct us_data *us)
 939 {
 940         struct isd200_info *info = (struct isd200_info *)us->extra;
 941         int retStatus = ISD200_GOOD;
 942
 943         US_DEBUGP("Entering isd200_manual_enum\n");
 944
 945         retStatus = isd200_read_config(us);
 946         if (retStatus == ISD200_GOOD) {
 947                 int isslave;
 948                 /* master or slave? */
 949                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, FALSE );
 950                 if (retStatus == ISD200_GOOD)
 951                         retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, FALSE );
 952
 953                 if (retStatus == ISD200_GOOD) {
 954                         retStatus = isd200_srst(us);
 955                         if (retStatus == ISD200_GOOD)
 956                                 /* ata or atapi? */
 957                                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, TRUE );
 958                 }
 959
 960                 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
 961                 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
 962                         US_DEBUGP("   Setting Master/Slave selection to %d\n", isslave);
 963                         info->ConfigData.ATAConfig &= 0x3f;
 964                         info->ConfigData.ATAConfig |= (isslave<<6);
 965                         retStatus = isd200_write_config(us);
 966                 }
 967         }
 968
 969         US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
 970         return(retStatus);
 971 }
 972
 973
 974 /**************************************************************************
 975  * isd200_get_inquiry_data
 976  *
 977  * Get inquiry data
 978  *
 979  * RETURNS:
 980  *    ISD status code
 981  */
 982 int isd200_get_inquiry_data( struct us_data *us )
 983 {
 984         struct isd200_info *info = (struct isd200_info *)us->extra;
 985         int retStatus = ISD200_GOOD;
 986
 987         US_DEBUGP("Entering isd200_get_inquiry_data\n");
 988
 989         /* set default to Master */
 990         info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
 991
 992         /* attempt to manually enumerate this device */
 993         retStatus = isd200_manual_enum(us);
 994         if (retStatus == ISD200_GOOD) {
 995                 int transferStatus;
 996
 997                 /* check for an ATA device */
 998                 if (info->DeviceFlags & DF_ATA_DEVICE) {
 999                         /* this must be an ATA device */
1000                         /* perform an ATA Command Identify */
1001                         transferStatus = isd200_action( us, ACTION_IDENTIFY,
1002                                                         &info->drive,
1003                                                         sizeof(struct hd_driveid) );
1004                         if (transferStatus != ISD200_TRANSPORT_GOOD) {
1005                                 /* Error issuing ATA Command Identify */
1006                                 US_DEBUGP("   Error issuing ATA Command Identify\n");
1007                                 retStatus = ISD200_ERROR;
1008                         } else {
1009                                 /* ATA Command Identify successful */
1010                                 int i;
1011                                 __u16 *src, *dest;
1012                                 ide_fix_driveid(&info->drive);
1013
1014                                 US_DEBUGP("   Identify Data Structure:\n");
1015                                 US_DEBUGP("      config = 0x%x\n", info->drive.config);
1016                                 US_DEBUGP("      cyls = 0x%x\n", info->drive.cyls);
1017                                 US_DEBUGP("      heads = 0x%x\n", info->drive.heads);
1018                                 US_DEBUGP("      track_bytes = 0x%x\n", info->drive.track_bytes);
1019                                 US_DEBUGP("      sector_bytes = 0x%x\n", info->drive.sector_bytes);
1020                                 US_DEBUGP("      sectors = 0x%x\n", info->drive.sectors);
1021                                 US_DEBUGP("      serial_no[0] = 0x%x\n", info->drive.serial_no[0]);
1022                                 US_DEBUGP("      buf_type = 0x%x\n", info->drive.buf_type);
1023                                 US_DEBUGP("      buf_size = 0x%x\n", info->drive.buf_size);
1024                                 US_DEBUGP("      ecc_bytes = 0x%x\n", info->drive.ecc_bytes);
1025                                 US_DEBUGP("      fw_rev[0] = 0x%x\n", info->drive.fw_rev[0]);
1026                                 US_DEBUGP("      model[0] = 0x%x\n", info->drive.model[0]);
1027                                 US_DEBUGP("      max_multsect = 0x%x\n", info->drive.max_multsect);
1028                                 US_DEBUGP("      dword_io = 0x%x\n", info->drive.dword_io);
1029                                 US_DEBUGP("      capability = 0x%x\n", info->drive.capability);
1030                                 US_DEBUGP("      tPIO = 0x%x\n", info->drive.tPIO);
1031                                 US_DEBUGP("      tDMA = 0x%x\n", info->drive.tDMA);
1032                                 US_DEBUGP("      field_valid = 0x%x\n", info->drive.field_valid);
1033                                 US_DEBUGP("      cur_cyls = 0x%x\n", info->drive.cur_cyls);
1034                                 US_DEBUGP("      cur_heads = 0x%x\n", info->drive.cur_heads);
1035                                 US_DEBUGP("      cur_sectors = 0x%x\n", info->drive.cur_sectors);
1036                                 US_DEBUGP("      cur_capacity = 0x%x\n", (info->drive.cur_capacity1 << 16) + info->drive.cur_capacity0 );
1037                                 US_DEBUGP("      multsect = 0x%x\n", info->drive.multsect);
1038                                 US_DEBUGP("      lba_capacity = 0x%x\n", info->drive.lba_capacity);
1039                                 US_DEBUGP("      command_set_1 = 0x%x\n", info->drive.command_set_1);
1040                                 US_DEBUGP("      command_set_2 = 0x%x\n", info->drive.command_set_2);
1041
1042                                 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1043
1044                                 /* Standard IDE interface only supports disks */
1045                                 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1046
1047                                 /* Fix-up the return data from an INQUIRY command to show
1048                                  * ANSI SCSI rev 2 so we don't confuse the SCSI layers above us
1049                                  * in Linux.
1050                                  */
1051                                 info->InquiryData.Versions = 0x2;
1052
1053                                 /* The length must be at least 36 (5 + 31) */
1054                                 info->InquiryData.AdditionalLength = 0x1F;
1055
1056                                 if (info->drive.command_set_1 & COMMANDSET_MEDIA_STATUS) {
1057                                         /* set the removable bit */
1058                                         info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1059                                         info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1060                                 }
1061
1062                                 /* Fill in vendor identification fields */
1063                                 src = (__u16*)info->drive.model;
1064                                 dest = (__u16*)info->InquiryData.VendorId;
1065                                 for (i=0;i<4;i++)
1066                                         dest[i] = be16_to_cpu(src[i]);
1067
1068                                 src = (__u16*)(info->drive.model+8);
1069                                 dest = (__u16*)info->InquiryData.ProductId;
1070                                 for (i=0;i<8;i++)
1071                                         dest[i] = be16_to_cpu(src[i]);
1072
1073                                 src = (__u16*)info->drive.fw_rev;
1074                                 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1075                                 for (i=0;i<2;i++)
1076                                         dest[i] = be16_to_cpu(src[i]);
1077
1078                                 /* determine if it supports Media Status Notification */
1079                                 if (info->drive.command_set_2 & COMMANDSET_MEDIA_STATUS) {
1080                                         US_DEBUGP("   Device supports Media Status Notification\n");
1081
1082                                         /* Indicate that it is enabled, even though it is not
1083                                          * This allows the lock/unlock of the media to work
1084                                          * correctly.
1085                                          */
1086                                         info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1087                                 }
1088                                 else
1089                                         info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1090
1091                         }
1092                 } else {
1093                         /*
1094                          * this must be an ATAPI device
1095                          * use an ATAPI protocol (Transparent SCSI)
1096                          */
1097                         us->protocol_name = "Transparent SCSI";
1098                         us->proto_handler = usb_stor_transparent_scsi_command;
1099
1100                         US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1101
1102                         /* Free driver structure */
1103                         if (us->extra != NULL) {
1104                                 kfree(us->extra);
1105                                 us->extra = NULL;
1106                                 us->extra_destructor = NULL;
1107                         }
1108                 }
1109         }
1110
1111         US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1112
1113         return(retStatus);
1114 }
1115
1116
1117 /**************************************************************************
1118  * isd200_data_copy
1119  *
1120  * Copy data into the srb request buffer.  Use scatter gather if required.
1121  *
1122  * RETURNS:
1123  *    void
1124  */
1125 void isd200_data_copy(Scsi_Cmnd *srb, char * src, int length)
1126 {
1127         unsigned int len = length;
1128         struct scatterlist *sg;
1129
1130         if (srb->use_sg) {
1131                 int i;
1132                 unsigned int total = 0;
1133
1134                 /* Add up the sizes of all the sg segments */
1135                 sg = (struct scatterlist *) srb->request_buffer;
1136                 for (i = 0; i < srb->use_sg; i++)
1137                         total += sg[i].length;
1138
1139                 if (length > total)
1140                         len = total;
1141
1142                 total = 0;
1143
1144                 /* Copy data into sg buffer(s) */
1145                 for (i = 0; i < srb->use_sg; i++) {
1146                         if ((len > total) && (len > 0)) {
1147                                 /* transfer the lesser of the next buffer or the
1148                                  * remaining data */
1149                                 if (len - total >= sg[i].length) {
1150                                         memcpy(sg_address(sg[i]), src + total, sg[i].length);
1151                                         total += sg[i].length;
1152                                 } else {
1153                                         memcpy(sg_address(sg[i]), src + total, len - total);
1154                                         total = len;
1155                                 }
1156                         }
1157                         else
1158                                 break;
1159                 }
1160         } else  {
1161                 /* Make sure length does not exceed buffer length */
1162                 if (length > srb->request_bufflen)
1163                         len = srb->request_bufflen;
1164
1165                 if (len > 0)
1166                         memcpy(srb->request_buffer, src, len);
1167         }
1168 }
1169
1170
1171 /**************************************************************************
1172  * isd200_scsi_to_ata
1173  *
1174  * Translate SCSI commands to ATA commands.
1175  *
1176  * RETURNS:
1177  *    TRUE if the command needs to be sent to the transport layer
1178  *    FALSE otherwise
1179  */
1180 int isd200_scsi_to_ata(Scsi_Cmnd *srb, struct us_data *us,
1181                        union ata_cdb * ataCdb)
1182 {
1183         struct isd200_info *info = (struct isd200_info *)us->extra;
1184         int sendToTransport = TRUE;
1185         unsigned char sectnum, head;
1186         unsigned short cylinder;
1187         unsigned long lba;
1188         unsigned long blockCount;
1189         unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1190
1191         memset(ataCdb, 0, sizeof(union ata_cdb));
1192
1193         /* SCSI Command */
1194         switch (srb->cmnd[0]) {
1195         case INQUIRY:
1196                 US_DEBUGP("   ATA OUT - INQUIRY\n");
1197
1198                 if (srb->request_bufflen > sizeof(struct inquiry_data))
1199                         srb->request_bufflen = sizeof(struct inquiry_data);
1200
1201                 /* copy InquiryData */
1202                 isd200_data_copy(srb, (char *) &info->InquiryData, srb->request_bufflen);
1203                 srb->result = SAM_STAT_GOOD;
1204                 sendToTransport = FALSE;
1205                 break;
1206
1207         case MODE_SENSE:
1208                 US_DEBUGP("   ATA OUT - SCSIOP_MODE_SENSE\n");
1209
1210                 /* Initialize the return buffer */
1211                 isd200_data_copy(srb, (char *) &senseData, 8);
1212
1213                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1214                 {
1215                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1216                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1217                         ataCdb->generic.TransferBlockSize = 1;
1218                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1219                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1220                         srb->request_bufflen = 0;
1221                 } else {
1222                         US_DEBUGP("   Media Status not supported, just report okay\n");
1223                         srb->result = SAM_STAT_GOOD;
1224                         sendToTransport = FALSE;
1225                 }
1226                 break;
1227
1228         case TEST_UNIT_READY:
1229                 US_DEBUGP("   ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1230
1231                 /* Initialize the return buffer */
1232                 isd200_data_copy(srb, (char *) &senseData, 8);
1233
1234                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1235                 {
1236                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1237                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1238                         ataCdb->generic.TransferBlockSize = 1;
1239                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1240                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1241                         srb->request_bufflen = 0;
1242                 } else {
1243                         US_DEBUGP("   Media Status not supported, just report okay\n");
1244                         srb->result = SAM_STAT_GOOD;
1245                         sendToTransport = FALSE;
1246                 }
1247                 break;
1248
1249         case READ_CAPACITY:
1250         {
1251                 unsigned long capacity;
1252                 struct read_capacity_data readCapacityData;
1253
1254                 US_DEBUGP("   ATA OUT - SCSIOP_READ_CAPACITY\n");
1255
1256                 if (info->drive.capability & CAPABILITY_LBA ) {
1257                         capacity = info->drive.lba_capacity - 1;
1258                 } else {
1259                         capacity = (info->drive.heads *
1260                                     info->drive.cyls *
1261                                     info->drive.sectors) - 1;
1262                 }
1263                 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1264                 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1265
1266                 if (srb->request_bufflen > sizeof(struct read_capacity_data))
1267                         srb->request_bufflen = sizeof(struct read_capacity_data);
1268
1269                 isd200_data_copy(srb, (char *) &readCapacityData, srb->request_bufflen);
1270                 srb->result = SAM_STAT_GOOD;
1271                 sendToTransport = FALSE;
1272         }
1273         break;
1274
1275         case READ_10:
1276                 US_DEBUGP("   ATA OUT - SCSIOP_READ\n");
1277
1278                 lba = *(unsigned long *)&srb->cmnd[2];
1279                 lba = cpu_to_be32(lba);
1280                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1281
1282                 if (info->drive.capability & CAPABILITY_LBA) {
1283                         sectnum = (unsigned char)(lba);
1284                         cylinder = (unsigned short)(lba>>8);
1285                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1286                 } else {
1287                         sectnum = (unsigned char)((lba % info->drive.sectors) + 1);
1288                         cylinder = (unsigned short)(lba / (info->drive.sectors *
1289                                                            info->drive.heads));
1290                         head = (unsigned char)((lba / info->drive.sectors) %
1291                                                info->drive.heads);
1292                 }
1293                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1294                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1295                 ataCdb->generic.TransferBlockSize = 1;
1296                 ataCdb->generic.RegisterSelect =
1297                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1298                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1299                   REG_DEVICE_HEAD  | REG_COMMAND;
1300                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1301                 ataCdb->write.SectorNumberByte = sectnum;
1302                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1303                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1304                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1305                 ataCdb->write.CommandByte = WIN_READ;
1306                 break;
1307
1308         case WRITE_10:
1309                 US_DEBUGP("   ATA OUT - SCSIOP_WRITE\n");
1310
1311                 lba = *(unsigned long *)&srb->cmnd[2];
1312                 lba = cpu_to_be32(lba);
1313                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1314
1315                 if (info->drive.capability & CAPABILITY_LBA) {
1316                         sectnum = (unsigned char)(lba);
1317                         cylinder = (unsigned short)(lba>>8);
1318                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1319                 } else {
1320                         sectnum = (unsigned char)((lba % info->drive.sectors) + 1);
1321                         cylinder = (unsigned short)(lba / (info->drive.sectors * info->drive.heads));
1322                         head = (unsigned char)((lba / info->drive.sectors) % info->drive.heads);
1323                 }
1324                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1325                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1326                 ataCdb->generic.TransferBlockSize = 1;
1327                 ataCdb->generic.RegisterSelect =
1328                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1329                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1330                   REG_DEVICE_HEAD  | REG_COMMAND;
1331                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1332                 ataCdb->write.SectorNumberByte = sectnum;
1333                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1334                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1335                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1336                 ataCdb->write.CommandByte = WIN_WRITE;
1337                 break;
1338
1339         case ALLOW_MEDIUM_REMOVAL:
1340                 US_DEBUGP("   ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1341
1342                 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1343                         US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1344
1345                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1346                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1347                         ataCdb->generic.TransferBlockSize = 1;
1348                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1349                         ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1350                                 WIN_DOORLOCK : WIN_DOORUNLOCK;
1351                         srb->request_bufflen = 0;
1352                 } else {
1353                         US_DEBUGP("   Not removeable media, just report okay\n");
1354                         srb->result = SAM_STAT_GOOD;
1355                         sendToTransport = FALSE;
1356                 }
1357                 break;
1358
1359         case START_STOP:
1360                 US_DEBUGP("   ATA OUT - SCSIOP_START_STOP_UNIT\n");
1361                 US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1362
1363                 /* Initialize the return buffer */
1364                 isd200_data_copy(srb, (char *) &senseData, 8);
1365
1366                 if ((srb->cmnd[4] & 0x3) == 0x2) {
1367                         US_DEBUGP("   Media Eject\n");
1368                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1369                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1370                         ataCdb->generic.TransferBlockSize = 0;
1371                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1372                         ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1373                 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1374                         US_DEBUGP("   Get Media Status\n");
1375                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1376                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1377                         ataCdb->generic.TransferBlockSize = 1;
1378                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1379                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1380                         srb->request_bufflen = 0;
1381                 } else {
1382                         US_DEBUGP("   Nothing to do, just report okay\n");
1383                         srb->result = SAM_STAT_GOOD;
1384                         sendToTransport = FALSE;
1385                 }
1386                 break;
1387
1388         default:
1389                 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1390                 srb->result = DID_ERROR << 16;
1391                 sendToTransport = FALSE;
1392                 break;
1393         }
1394
1395         return(sendToTransport);
1396 }
1397
1398
1399 /**************************************************************************
1400  * isd200_init_info
1401  *
1402  * Allocates (if necessary) and initializes the driver structure.
1403  *
1404  * RETURNS:
1405  *    ISD status code
1406  */
1407 int isd200_init_info(struct us_data *us)
1408 {
1409         int retStatus = ISD200_GOOD;
1410
1411         if (!us->extra) {
1412                 us->extra = (void *) kmalloc(sizeof(struct isd200_info), GFP_KERNEL);
1413                 if (!us->extra) {
1414                         US_DEBUGP("ERROR - kmalloc failure\n");
1415                         retStatus = ISD200_ERROR;
1416                 }
1417         }
1418
1419         if (retStatus == ISD200_GOOD) {
1420                 memset(us->extra, 0, sizeof(struct isd200_info));
1421         }
1422
1423         return(retStatus);
1424 }
1425
1426 /**************************************************************************
1427  * Initialization for the ISD200
1428  */
1429
1430 int isd200_Initialization(struct us_data *us)
1431 {
1432         US_DEBUGP("ISD200 Initialization...\n");
1433
1434         /* Initialize ISD200 info struct */
1435
1436         if (isd200_init_info(us) == ISD200_ERROR) {
1437                 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1438         } else {
1439                 /* Get device specific data */
1440
1441                 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1442                         US_DEBUGP("ISD200 Initialization Failure\n");
1443                 else
1444                         US_DEBUGP("ISD200 Initialization complete\n");
1445         }
1446
1447         return 0;
1448 }
1449
1450
1451 /**************************************************************************
1452  * Protocol and Transport for the ISD200 ASIC
1453  *
1454  * This protocol and transport are for ATA devices connected to an ISD200
1455  * ASIC.  An ATAPI device that is conected as a slave device will be
1456  * detected in the driver initialization function and the protocol will
1457  * be changed to an ATAPI protocol (Transparent SCSI).
1458  *
1459  */
1460
1461 void isd200_ata_command(Scsi_Cmnd *srb, struct us_data *us)
1462 {
1463         int sendToTransport = TRUE;
1464         union ata_cdb ataCdb;
1465
1466         /* Make sure driver was initialized */
1467
1468         if (us->extra == NULL)
1469                 US_DEBUGP("ERROR Driver not initialized\n");
1470
1471         /* Convert command */
1472         sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1473
1474         /* send the command to the transport layer */
1475         if (sendToTransport)
1476                 isd200_invoke_transport(us, srb, &ataCdb);
1477 }