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   1 /* Transport & Protocol Driver for In-System Design, Inc. ISD200 ASIC
   2  *
   3  * Current development and maintenance:
   4  *   (C) 2001-2002 Björn Stenberg (bjorn@haxx.se)
   5  *
   6  * Developed with the assistance of:
   7  *   (C) 2002 Alan Stern <stern@rowland.org>
   8  *
   9  * Initial work:
  10  *   (C) 2000 In-System Design, Inc. (support@in-system.com)
  11  *
  12  * The ISD200 ASIC does not natively support ATA devices.  The chip
  13  * does implement an interface, the ATA Command Block (ATACB) which provides
  14  * a means of passing ATA commands and ATA register accesses to a device.
  15  *
  16  * This program is free software; you can redistribute it and/or modify it
  17  * under the terms of the GNU General Public License as published by the
  18  * Free Software Foundation; either version 2, or (at your option) any
  19  * later version.
  20  *
  21  * This program is distributed in the hope that it will be useful, but
  22  * WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24  * General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU General Public License along
  27  * with this program; if not, write to the Free Software Foundation, Inc.,
  28  * 675 Mass Ave, Cambridge, MA 02139, USA.
  29  *
  30  * History:
  31  *
  32  *  2002-10-19: Removed the specialized transfer routines.
  33  *              (Alan Stern <stern@rowland.harvard.edu>)
  34  *  2001-02-24: Removed lots of duplicate code and simplified the structure.
  35  *            (bjorn@haxx.se)
  36  *  2002-01-16: Fixed endianness bug so it works on the ppc arch.
  37  *            (Luc Saillard <luc@saillard.org>)
  38  *  2002-01-17: All bitfields removed.
  39  *            (bjorn@haxx.se)
  40  */
  41
  42
  43 /* Include files */
  44
  45 #include <linux/jiffies.h>
  46 #include <linux/errno.h>
  47 #include <linux/module.h>
  48 #include <linux/slab.h>
  49 #include <linux/hdreg.h>
  50 #include <linux/scatterlist.h>
  51
  52 #include <scsi/scsi.h>
  53 #include <scsi/scsi_cmnd.h>
  54 #include <scsi/scsi_device.h>
  55
  56 #include "usb.h"
  57 #include "transport.h"
  58 #include "protocol.h"
  59 #include "debug.h"
  60 #include "scsiglue.h"
  61
  62 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC");
  63 MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>");
  64 MODULE_LICENSE("GPL");
  65
  66 static int isd200_Initialization(struct us_data *us);
  67
  68
  69 /*
  70  * The table of devices
  71  */
  72 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
  73                     vendorName, productName, useProtocol, useTransport, \
  74                     initFunction, flags) \
  75 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
  76   .driver_info = (flags)|(USB_US_TYPE_STOR<<24) }
  77
  78 struct usb_device_id isd200_usb_ids[] = {
  79 #       include "unusual_isd200.h"
  80         { }             /* Terminating entry */
  81 };
  82 MODULE_DEVICE_TABLE(usb, isd200_usb_ids);
  83
  84 #undef UNUSUAL_DEV
  85 #undef USUAL_DEV
  86
  87 /*
  88  * The flags table
  89  */
  90 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
  91                     vendor_name, product_name, use_protocol, use_transport, \
  92                     init_function, Flags) \
  93 { \
  94         .vendorName = vendor_name,      \
  95         .productName = product_name,    \
  96         .useProtocol = use_protocol,    \
  97         .useTransport = use_transport,  \
  98         .initFunction = init_function,  \
  99 }
 100
 101 static struct us_unusual_dev isd200_unusual_dev_list[] = {
 102 #       include "unusual_isd200.h"
 103         { }             /* Terminating entry */
 104 };
 105
 106 #undef UNUSUAL_DEV
 107 #undef USUAL_DEV
 108
 109
 110 /* Timeout defines (in Seconds) */
 111
 112 #define ISD200_ENUM_BSY_TIMEOUT         35
 113 #define ISD200_ENUM_DETECT_TIMEOUT      30
 114 #define ISD200_DEFAULT_TIMEOUT          30
 115
 116 /* device flags */
 117 #define DF_ATA_DEVICE           0x0001
 118 #define DF_MEDIA_STATUS_ENABLED 0x0002
 119 #define DF_REMOVABLE_MEDIA      0x0004
 120
 121 /* capability bit definitions */
 122 #define CAPABILITY_DMA          0x01
 123 #define CAPABILITY_LBA          0x02
 124
 125 /* command_setX bit definitions */
 126 #define COMMANDSET_REMOVABLE    0x02
 127 #define COMMANDSET_MEDIA_STATUS 0x10
 128
 129 /* ATA Vendor Specific defines */
 130 #define ATA_ADDRESS_DEVHEAD_STD      0xa0
 131 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40
 132 #define ATA_ADDRESS_DEVHEAD_SLAVE    0x10
 133
 134 /* Action Select bits */
 135 #define ACTION_SELECT_0      0x01
 136 #define ACTION_SELECT_1      0x02
 137 #define ACTION_SELECT_2      0x04
 138 #define ACTION_SELECT_3      0x08
 139 #define ACTION_SELECT_4      0x10
 140 #define ACTION_SELECT_5      0x20
 141 #define ACTION_SELECT_6      0x40
 142 #define ACTION_SELECT_7      0x80
 143
 144 /* Register Select bits */
 145 #define REG_ALTERNATE_STATUS    0x01
 146 #define REG_DEVICE_CONTROL      0x01
 147 #define REG_ERROR               0x02
 148 #define REG_FEATURES            0x02
 149 #define REG_SECTOR_COUNT        0x04
 150 #define REG_SECTOR_NUMBER       0x08
 151 #define REG_CYLINDER_LOW        0x10
 152 #define REG_CYLINDER_HIGH       0x20
 153 #define REG_DEVICE_HEAD         0x40
 154 #define REG_STATUS              0x80
 155 #define REG_COMMAND             0x80
 156
 157 /* ATA registers offset definitions */
 158 #define ATA_REG_ERROR_OFFSET            1
 159 #define ATA_REG_LCYL_OFFSET             4
 160 #define ATA_REG_HCYL_OFFSET             5
 161 #define ATA_REG_STATUS_OFFSET           7
 162
 163 /* ATA error definitions not in <linux/hdreg.h> */
 164 #define ATA_ERROR_MEDIA_CHANGE          0x20
 165
 166 /* ATA command definitions not in <linux/hdreg.h> */
 167 #define ATA_COMMAND_GET_MEDIA_STATUS    0xDA
 168 #define ATA_COMMAND_MEDIA_EJECT         0xED
 169
 170 /* ATA drive control definitions */
 171 #define ATA_DC_DISABLE_INTERRUPTS       0x02
 172 #define ATA_DC_RESET_CONTROLLER         0x04
 173 #define ATA_DC_REENABLE_CONTROLLER      0x00
 174
 175 /*
 176  *  General purpose return codes
 177  */
 178
 179 #define ISD200_ERROR            -1
 180 #define ISD200_GOOD              0
 181
 182 /*
 183  * Transport return codes
 184  */
 185
 186 #define ISD200_TRANSPORT_GOOD       0   /* Transport good, command good     */
 187 #define ISD200_TRANSPORT_FAILED     1   /* Transport good, command failed   */
 188 #define ISD200_TRANSPORT_ERROR      2   /* Transport bad (i.e. device dead) */
 189
 190 /* driver action codes */
 191 #define ACTION_READ_STATUS      0
 192 #define ACTION_RESET            1
 193 #define ACTION_REENABLE         2
 194 #define ACTION_SOFT_RESET       3
 195 #define ACTION_ENUM             4
 196 #define ACTION_IDENTIFY         5
 197
 198
 199 /*
 200  * ata_cdb struct
 201  */
 202
 203
 204 union ata_cdb {
 205         struct {
 206                 unsigned char SignatureByte0;
 207                 unsigned char SignatureByte1;
 208                 unsigned char ActionSelect;
 209                 unsigned char RegisterSelect;
 210                 unsigned char TransferBlockSize;
 211                 unsigned char WriteData3F6;
 212                 unsigned char WriteData1F1;
 213                 unsigned char WriteData1F2;
 214                 unsigned char WriteData1F3;
 215                 unsigned char WriteData1F4;
 216                 unsigned char WriteData1F5;
 217                 unsigned char WriteData1F6;
 218                 unsigned char WriteData1F7;
 219                 unsigned char Reserved[3];
 220         } generic;
 221
 222         struct {
 223                 unsigned char SignatureByte0;
 224                 unsigned char SignatureByte1;
 225                 unsigned char ActionSelect;
 226                 unsigned char RegisterSelect;
 227                 unsigned char TransferBlockSize;
 228                 unsigned char AlternateStatusByte;
 229                 unsigned char ErrorByte;
 230                 unsigned char SectorCountByte;
 231                 unsigned char SectorNumberByte;
 232                 unsigned char CylinderLowByte;
 233                 unsigned char CylinderHighByte;
 234                 unsigned char DeviceHeadByte;
 235                 unsigned char StatusByte;
 236                 unsigned char Reserved[3];
 237         } read;
 238
 239         struct {
 240                 unsigned char SignatureByte0;
 241                 unsigned char SignatureByte1;
 242                 unsigned char ActionSelect;
 243                 unsigned char RegisterSelect;
 244                 unsigned char TransferBlockSize;
 245                 unsigned char DeviceControlByte;
 246                 unsigned char FeaturesByte;
 247                 unsigned char SectorCountByte;
 248                 unsigned char SectorNumberByte;
 249                 unsigned char CylinderLowByte;
 250                 unsigned char CylinderHighByte;
 251                 unsigned char DeviceHeadByte;
 252                 unsigned char CommandByte;
 253                 unsigned char Reserved[3];
 254         } write;
 255 };
 256
 257
 258 /*
 259  * Inquiry data structure. This is the data returned from the target
 260  * after it receives an inquiry.
 261  *
 262  * This structure may be extended by the number of bytes specified
 263  * in the field AdditionalLength. The defined size constant only
 264  * includes fields through ProductRevisionLevel.
 265  */
 266
 267 /*
 268  * DeviceType field
 269  */
 270 #define DIRECT_ACCESS_DEVICE        0x00    /* disks */
 271 #define DEVICE_REMOVABLE                0x80
 272
 273 struct inquiry_data {
 274         unsigned char DeviceType;
 275         unsigned char DeviceTypeModifier;
 276         unsigned char Versions;
 277         unsigned char Format;
 278         unsigned char AdditionalLength;
 279         unsigned char Reserved[2];
 280         unsigned char Capability;
 281         unsigned char VendorId[8];
 282         unsigned char ProductId[16];
 283         unsigned char ProductRevisionLevel[4];
 284         unsigned char VendorSpecific[20];
 285         unsigned char Reserved3[40];
 286 } __attribute__ ((packed));
 287
 288 /*
 289  * INQUIRY data buffer size
 290  */
 291
 292 #define INQUIRYDATABUFFERSIZE 36
 293
 294
 295 /*
 296  * ISD200 CONFIG data struct
 297  */
 298
 299 #define ATACFG_TIMING     0x0f
 300 #define ATACFG_ATAPI_RESET     0x10
 301 #define ATACFG_MASTER     0x20
 302 #define ATACFG_BLOCKSIZE       0xa0
 303
 304 #define ATACFGE_LAST_LUN       0x07
 305 #define ATACFGE_DESC_OVERRIDE  0x08
 306 #define ATACFGE_STATE_SUSPEND  0x10
 307 #define ATACFGE_SKIP_BOOT      0x20
 308 #define ATACFGE_CONF_DESC2     0x40
 309 #define ATACFGE_INIT_STATUS    0x80
 310
 311 #define CFG_CAPABILITY_SRST    0x01
 312
 313 struct isd200_config {
 314         unsigned char EventNotification;
 315         unsigned char ExternalClock;
 316         unsigned char ATAInitTimeout;
 317         unsigned char ATAConfig;
 318         unsigned char ATAMajorCommand;
 319         unsigned char ATAMinorCommand;
 320         unsigned char ATAExtraConfig;
 321         unsigned char Capability;
 322 }__attribute__ ((packed));
 323
 324
 325 /*
 326  * ISD200 driver information struct
 327  */
 328
 329 struct isd200_info {
 330         struct inquiry_data InquiryData;
 331         struct hd_driveid *id;
 332         struct isd200_config ConfigData;
 333         unsigned char *RegsBuf;
 334         unsigned char ATARegs[8];
 335         unsigned char DeviceHead;
 336         unsigned char DeviceFlags;
 337
 338         /* maximum number of LUNs supported */
 339         unsigned char MaxLUNs;
 340         unsigned char cmnd[BLK_MAX_CDB];
 341         struct scsi_cmnd srb;
 342         struct scatterlist sg;
 343 };
 344
 345
 346 /*
 347  * Read Capacity Data - returned in Big Endian format
 348  */
 349
 350 struct read_capacity_data {
 351         __be32 LogicalBlockAddress;
 352         __be32 BytesPerBlock;
 353 };
 354
 355 /*
 356  * Read Block Limits Data - returned in Big Endian format
 357  * This structure returns the maximum and minimum block
 358  * size for a TAPE device.
 359  */
 360
 361 struct read_block_limits {
 362         unsigned char Reserved;
 363         unsigned char BlockMaximumSize[3];
 364         unsigned char BlockMinimumSize[2];
 365 };
 366
 367
 368 /*
 369  * Sense Data Format
 370  */
 371
 372 #define SENSE_ERRCODE      0x7f
 373 #define SENSE_ERRCODE_VALID     0x80
 374 #define SENSE_FLAG_SENSE_KEY    0x0f
 375 #define SENSE_FLAG_BAD_LENGTH   0x20
 376 #define SENSE_FLAG_END_OF_MEDIA 0x40
 377 #define SENSE_FLAG_FILE_MARK    0x80
 378 struct sense_data {
 379         unsigned char ErrorCode;
 380         unsigned char SegmentNumber;
 381         unsigned char Flags;
 382         unsigned char Information[4];
 383         unsigned char AdditionalSenseLength;
 384         unsigned char CommandSpecificInformation[4];
 385         unsigned char AdditionalSenseCode;
 386         unsigned char AdditionalSenseCodeQualifier;
 387         unsigned char FieldReplaceableUnitCode;
 388         unsigned char SenseKeySpecific[3];
 389 } __attribute__ ((packed));
 390
 391 /*
 392  * Default request sense buffer size
 393  */
 394
 395 #define SENSE_BUFFER_SIZE 18
 396
 397 /***********************************************************************
 398  * Helper routines
 399  ***********************************************************************/
 400
 401 /**************************************************************************
 402  * isd200_build_sense
 403  *
 404  *  Builds an artificial sense buffer to report the results of a
 405  *  failed command.
 406  *
 407  * RETURNS:
 408  *    void
 409  */
 410 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb)
 411 {
 412         struct isd200_info *info = (struct isd200_info *)us->extra;
 413         struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0];
 414         unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET];
 415
 416         if(error & ATA_ERROR_MEDIA_CHANGE) {
 417                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 418                 buf->AdditionalSenseLength = 0xb;
 419                 buf->Flags = UNIT_ATTENTION;
 420                 buf->AdditionalSenseCode = 0;
 421                 buf->AdditionalSenseCodeQualifier = 0;
 422         } else if(error & MCR_ERR) {
 423                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 424                 buf->AdditionalSenseLength = 0xb;
 425                 buf->Flags =  UNIT_ATTENTION;
 426                 buf->AdditionalSenseCode = 0;
 427                 buf->AdditionalSenseCodeQualifier = 0;
 428         } else if(error & TRK0_ERR) {
 429                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 430                 buf->AdditionalSenseLength = 0xb;
 431                 buf->Flags =  NOT_READY;
 432                 buf->AdditionalSenseCode = 0;
 433                 buf->AdditionalSenseCodeQualifier = 0;
 434         } else if(error & ECC_ERR) {
 435                 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID;
 436                 buf->AdditionalSenseLength = 0xb;
 437                 buf->Flags =  DATA_PROTECT;
 438                 buf->AdditionalSenseCode = 0;
 439                 buf->AdditionalSenseCodeQualifier = 0;
 440         } else {
 441                 buf->ErrorCode = 0;
 442                 buf->AdditionalSenseLength = 0;
 443                 buf->Flags =  0;
 444                 buf->AdditionalSenseCode = 0;
 445                 buf->AdditionalSenseCodeQualifier = 0;
 446         }
 447 }
 448
 449
 450 /***********************************************************************
 451  * Transport routines
 452  ***********************************************************************/
 453
 454 /**************************************************************************
 455  *  isd200_set_srb(), isd200_srb_set_bufflen()
 456  *
 457  * Two helpers to facilitate in initialization of scsi_cmnd structure
 458  * Will need to change when struct scsi_cmnd changes
 459  */
 460 static void isd200_set_srb(struct isd200_info *info,
 461         enum dma_data_direction dir, void* buff, unsigned bufflen)
 462 {
 463         struct scsi_cmnd *srb = &info->srb;
 464
 465         if (buff)
 466                 sg_init_one(&info->sg, buff, bufflen);
 467
 468         srb->sc_data_direction = dir;
 469         srb->sdb.table.sgl = buff ? &info->sg : NULL;
 470         srb->sdb.length = bufflen;
 471         srb->sdb.table.nents = buff ? 1 : 0;
 472 }
 473
 474 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen)
 475 {
 476         srb->sdb.length = bufflen;
 477 }
 478
 479
 480 /**************************************************************************
 481  *  isd200_action
 482  *
 483  * Routine for sending commands to the isd200
 484  *
 485  * RETURNS:
 486  *    ISD status code
 487  */
 488 static int isd200_action( struct us_data *us, int action,
 489                           void* pointer, int value )
 490 {
 491         union ata_cdb ata;
 492         struct scsi_device srb_dev;
 493         struct isd200_info *info = (struct isd200_info *)us->extra;
 494         struct scsi_cmnd *srb = &info->srb;
 495         int status;
 496
 497         memset(&ata, 0, sizeof(ata));
 498         memset(&srb_dev, 0, sizeof(srb_dev));
 499         srb->cmnd = info->cmnd;
 500         srb->device = &srb_dev;
 501         ++srb->serial_number;
 502
 503         ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
 504         ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
 505         ata.generic.TransferBlockSize = 1;
 506
 507         switch ( action ) {
 508         case ACTION_READ_STATUS:
 509                 US_DEBUGP("   isd200_action(READ_STATUS)\n");
 510                 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2;
 511                 ata.generic.RegisterSelect =
 512                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
 513                   REG_STATUS | REG_ERROR;
 514                 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value);
 515                 break;
 516
 517         case ACTION_ENUM:
 518                 US_DEBUGP("   isd200_action(ENUM,0x%02x)\n",value);
 519                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 520                                            ACTION_SELECT_3|ACTION_SELECT_4|
 521                                            ACTION_SELECT_5;
 522                 ata.generic.RegisterSelect = REG_DEVICE_HEAD;
 523                 ata.write.DeviceHeadByte = value;
 524                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 525                 break;
 526
 527         case ACTION_RESET:
 528                 US_DEBUGP("   isd200_action(RESET)\n");
 529                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 530                                            ACTION_SELECT_3|ACTION_SELECT_4;
 531                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 532                 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER;
 533                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 534                 break;
 535
 536         case ACTION_REENABLE:
 537                 US_DEBUGP("   isd200_action(REENABLE)\n");
 538                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2|
 539                                            ACTION_SELECT_3|ACTION_SELECT_4;
 540                 ata.generic.RegisterSelect = REG_DEVICE_CONTROL;
 541                 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER;
 542                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 543                 break;
 544
 545         case ACTION_SOFT_RESET:
 546                 US_DEBUGP("   isd200_action(SOFT_RESET)\n");
 547                 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5;
 548                 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND;
 549                 ata.write.DeviceHeadByte = info->DeviceHead;
 550                 ata.write.CommandByte = WIN_SRST;
 551                 isd200_set_srb(info, DMA_NONE, NULL, 0);
 552                 break;
 553
 554         case ACTION_IDENTIFY:
 555                 US_DEBUGP("   isd200_action(IDENTIFY)\n");
 556                 ata.generic.RegisterSelect = REG_COMMAND;
 557                 ata.write.CommandByte = WIN_IDENTIFY;
 558                 isd200_set_srb(info, DMA_FROM_DEVICE, info->id,
 559                                                 sizeof(struct hd_driveid));
 560                 break;
 561
 562         default:
 563                 US_DEBUGP("Error: Undefined action %d\n",action);
 564                 return ISD200_ERROR;
 565         }
 566
 567         memcpy(srb->cmnd, &ata, sizeof(ata.generic));
 568         srb->cmd_len = sizeof(ata.generic);
 569         status = usb_stor_Bulk_transport(srb, us);
 570         if (status == USB_STOR_TRANSPORT_GOOD)
 571                 status = ISD200_GOOD;
 572         else {
 573                 US_DEBUGP("   isd200_action(0x%02x) error: %d\n",action,status);
 574                 status = ISD200_ERROR;
 575                 /* need to reset device here */
 576         }
 577
 578         return status;
 579 }
 580
 581 /**************************************************************************
 582  * isd200_read_regs
 583  *
 584  * Read ATA Registers
 585  *
 586  * RETURNS:
 587  *    ISD status code
 588  */
 589 static int isd200_read_regs( struct us_data *us )
 590 {
 591         struct isd200_info *info = (struct isd200_info *)us->extra;
 592         int retStatus = ISD200_GOOD;
 593         int transferStatus;
 594
 595         US_DEBUGP("Entering isd200_IssueATAReadRegs\n");
 596
 597         transferStatus = isd200_action( us, ACTION_READ_STATUS,
 598                                     info->RegsBuf, sizeof(info->ATARegs) );
 599         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 600                 US_DEBUGP("   Error reading ATA registers\n");
 601                 retStatus = ISD200_ERROR;
 602         } else {
 603                 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs));
 604                 US_DEBUGP("   Got ATA Register[ATA_REG_ERROR_OFFSET] = 0x%x\n",
 605                           info->ATARegs[ATA_REG_ERROR_OFFSET]);
 606         }
 607
 608         return retStatus;
 609 }
 610
 611
 612 /**************************************************************************
 613  * Invoke the transport and basic error-handling/recovery methods
 614  *
 615  * This is used by the protocol layers to actually send the message to
 616  * the device and receive the response.
 617  */
 618 static void isd200_invoke_transport( struct us_data *us,
 619                               struct scsi_cmnd *srb,
 620                               union ata_cdb *ataCdb )
 621 {
 622         int need_auto_sense = 0;
 623         int transferStatus;
 624         int result;
 625
 626         /* send the command to the transport layer */
 627         memcpy(srb->cmnd, ataCdb, sizeof(ataCdb->generic));
 628         srb->cmd_len = sizeof(ataCdb->generic);
 629         transferStatus = usb_stor_Bulk_transport(srb, us);
 630
 631         /* if the command gets aborted by the higher layers, we need to
 632          * short-circuit all other processing
 633          */
 634         if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
 635                 US_DEBUGP("-- command was aborted\n");
 636                 goto Handle_Abort;
 637         }
 638
 639         switch (transferStatus) {
 640
 641         case USB_STOR_TRANSPORT_GOOD:
 642                 /* Indicate a good result */
 643                 srb->result = SAM_STAT_GOOD;
 644                 break;
 645
 646         case USB_STOR_TRANSPORT_NO_SENSE:
 647                 US_DEBUGP("-- transport indicates protocol failure\n");
 648                 srb->result = SAM_STAT_CHECK_CONDITION;
 649                 return;
 650
 651         case USB_STOR_TRANSPORT_FAILED:
 652                 US_DEBUGP("-- transport indicates command failure\n");
 653                 need_auto_sense = 1;
 654                 break;
 655
 656         case USB_STOR_TRANSPORT_ERROR:
 657                 US_DEBUGP("-- transport indicates transport error\n");
 658                 srb->result = DID_ERROR << 16;
 659                 /* Need reset here */
 660                 return;
 661
 662         default:
 663                 US_DEBUGP("-- transport indicates unknown error\n");
 664                 srb->result = DID_ERROR << 16;
 665                 /* Need reset here */
 666                 return;
 667         }
 668
 669         if ((scsi_get_resid(srb) > 0) &&
 670             !((srb->cmnd[0] == REQUEST_SENSE) ||
 671               (srb->cmnd[0] == INQUIRY) ||
 672               (srb->cmnd[0] == MODE_SENSE) ||
 673               (srb->cmnd[0] == LOG_SENSE) ||
 674               (srb->cmnd[0] == MODE_SENSE_10))) {
 675                 US_DEBUGP("-- unexpectedly short transfer\n");
 676                 need_auto_sense = 1;
 677         }
 678
 679         if (need_auto_sense) {
 680                 result = isd200_read_regs(us);
 681                 if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) {
 682                         US_DEBUGP("-- auto-sense aborted\n");
 683                         goto Handle_Abort;
 684                 }
 685                 if (result == ISD200_GOOD) {
 686                         isd200_build_sense(us, srb);
 687                         srb->result = SAM_STAT_CHECK_CONDITION;
 688
 689                         /* If things are really okay, then let's show that */
 690                         if ((srb->sense_buffer[2] & 0xf) == 0x0)
 691                                 srb->result = SAM_STAT_GOOD;
 692                 } else {
 693                         srb->result = DID_ERROR << 16;
 694                         /* Need reset here */
 695                 }
 696         }
 697
 698         /* Regardless of auto-sense, if we _know_ we have an error
 699          * condition, show that in the result code
 700          */
 701         if (transferStatus == USB_STOR_TRANSPORT_FAILED)
 702                 srb->result = SAM_STAT_CHECK_CONDITION;
 703         return;
 704
 705         /* abort processing: the bulk-only transport requires a reset
 706          * following an abort */
 707         Handle_Abort:
 708         srb->result = DID_ABORT << 16;
 709
 710         /* permit the reset transfer to take place */
 711         clear_bit(US_FLIDX_ABORTING, &us->dflags);
 712         /* Need reset here */
 713 }
 714
 715 #ifdef CONFIG_USB_STORAGE_DEBUG
 716 static void isd200_log_config( struct isd200_info* info )
 717 {
 718         US_DEBUGP("      Event Notification: 0x%x\n",
 719                   info->ConfigData.EventNotification);
 720         US_DEBUGP("      External Clock: 0x%x\n",
 721                   info->ConfigData.ExternalClock);
 722         US_DEBUGP("      ATA Init Timeout: 0x%x\n",
 723                   info->ConfigData.ATAInitTimeout);
 724         US_DEBUGP("      ATAPI Command Block Size: 0x%x\n",
 725                   (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6);
 726         US_DEBUGP("      Master/Slave Selection: 0x%x\n",
 727                   info->ConfigData.ATAConfig & ATACFG_MASTER);
 728         US_DEBUGP("      ATAPI Reset: 0x%x\n",
 729                   info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET);
 730         US_DEBUGP("      ATA Timing: 0x%x\n",
 731                   info->ConfigData.ATAConfig & ATACFG_TIMING);
 732         US_DEBUGP("      ATA Major Command: 0x%x\n",
 733                   info->ConfigData.ATAMajorCommand);
 734         US_DEBUGP("      ATA Minor Command: 0x%x\n",
 735                   info->ConfigData.ATAMinorCommand);
 736         US_DEBUGP("      Init Status: 0x%x\n",
 737                   info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS);
 738         US_DEBUGP("      Config Descriptor 2: 0x%x\n",
 739                   info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2);
 740         US_DEBUGP("      Skip Device Boot: 0x%x\n",
 741                   info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT);
 742         US_DEBUGP("      ATA 3 State Supsend: 0x%x\n",
 743                   info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND);
 744         US_DEBUGP("      Descriptor Override: 0x%x\n",
 745                   info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE);
 746         US_DEBUGP("      Last LUN Identifier: 0x%x\n",
 747                   info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN);
 748         US_DEBUGP("      SRST Enable: 0x%x\n",
 749                   info->ConfigData.ATAExtraConfig & CFG_CAPABILITY_SRST);
 750 }
 751 #endif
 752
 753 /**************************************************************************
 754  * isd200_write_config
 755  *
 756  * Write the ISD200 Configuration data
 757  *
 758  * RETURNS:
 759  *    ISD status code
 760  */
 761 static int isd200_write_config( struct us_data *us )
 762 {
 763         struct isd200_info *info = (struct isd200_info *)us->extra;
 764         int retStatus = ISD200_GOOD;
 765         int result;
 766
 767 #ifdef CONFIG_USB_STORAGE_DEBUG
 768         US_DEBUGP("Entering isd200_write_config\n");
 769         US_DEBUGP("   Writing the following ISD200 Config Data:\n");
 770         isd200_log_config(info);
 771 #endif
 772
 773         /* let's send the command via the control pipe */
 774         result = usb_stor_ctrl_transfer(
 775                 us,
 776                 us->send_ctrl_pipe,
 777                 0x01,
 778                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
 779                 0x0000,
 780                 0x0002,
 781                 (void *) &info->ConfigData,
 782                 sizeof(info->ConfigData));
 783
 784         if (result >= 0) {
 785                 US_DEBUGP("   ISD200 Config Data was written successfully\n");
 786         } else {
 787                 US_DEBUGP("   Request to write ISD200 Config Data failed!\n");
 788                 retStatus = ISD200_ERROR;
 789         }
 790
 791         US_DEBUGP("Leaving isd200_write_config %08X\n", retStatus);
 792         return retStatus;
 793 }
 794
 795
 796 /**************************************************************************
 797  * isd200_read_config
 798  *
 799  * Reads the ISD200 Configuration data
 800  *
 801  * RETURNS:
 802  *    ISD status code
 803  */
 804 static int isd200_read_config( struct us_data *us )
 805 {
 806         struct isd200_info *info = (struct isd200_info *)us->extra;
 807         int retStatus = ISD200_GOOD;
 808         int result;
 809
 810         US_DEBUGP("Entering isd200_read_config\n");
 811
 812         /* read the configuration information from ISD200.  Use this to */
 813         /* determine what the special ATA CDB bytes are.                */
 814
 815         result = usb_stor_ctrl_transfer(
 816                 us,
 817                 us->recv_ctrl_pipe,
 818                 0x02,
 819                 USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
 820                 0x0000,
 821                 0x0002,
 822                 (void *) &info->ConfigData,
 823                 sizeof(info->ConfigData));
 824
 825
 826         if (result >= 0) {
 827                 US_DEBUGP("   Retrieved the following ISD200 Config Data:\n");
 828 #ifdef CONFIG_USB_STORAGE_DEBUG
 829                 isd200_log_config(info);
 830 #endif
 831         } else {
 832                 US_DEBUGP("   Request to get ISD200 Config Data failed!\n");
 833                 retStatus = ISD200_ERROR;
 834         }
 835
 836         US_DEBUGP("Leaving isd200_read_config %08X\n", retStatus);
 837         return retStatus;
 838 }
 839
 840
 841 /**************************************************************************
 842  * isd200_atapi_soft_reset
 843  *
 844  * Perform an Atapi Soft Reset on the device
 845  *
 846  * RETURNS:
 847  *    NT status code
 848  */
 849 static int isd200_atapi_soft_reset( struct us_data *us )
 850 {
 851         int retStatus = ISD200_GOOD;
 852         int transferStatus;
 853
 854         US_DEBUGP("Entering isd200_atapi_soft_reset\n");
 855
 856         transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 );
 857         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 858                 US_DEBUGP("   Error issuing Atapi Soft Reset\n");
 859                 retStatus = ISD200_ERROR;
 860         }
 861
 862         US_DEBUGP("Leaving isd200_atapi_soft_reset %08X\n", retStatus);
 863         return retStatus;
 864 }
 865
 866
 867 /**************************************************************************
 868  * isd200_srst
 869  *
 870  * Perform an SRST on the device
 871  *
 872  * RETURNS:
 873  *    ISD status code
 874  */
 875 static int isd200_srst( struct us_data *us )
 876 {
 877         int retStatus = ISD200_GOOD;
 878         int transferStatus;
 879
 880         US_DEBUGP("Entering isd200_SRST\n");
 881
 882         transferStatus = isd200_action( us, ACTION_RESET, NULL, 0 );
 883
 884         /* check to see if this request failed */
 885         if (transferStatus != ISD200_TRANSPORT_GOOD) {
 886                 US_DEBUGP("   Error issuing SRST\n");
 887                 retStatus = ISD200_ERROR;
 888         } else {
 889                 /* delay 10ms to give the drive a chance to see it */
 890                 msleep(10);
 891
 892                 transferStatus = isd200_action( us, ACTION_REENABLE, NULL, 0 );
 893                 if (transferStatus != ISD200_TRANSPORT_GOOD) {
 894                         US_DEBUGP("   Error taking drive out of reset\n");
 895                         retStatus = ISD200_ERROR;
 896                 } else {
 897                         /* delay 50ms to give the drive a chance to recover after SRST */
 898                         msleep(50);
 899                 }
 900         }
 901
 902         US_DEBUGP("Leaving isd200_srst %08X\n", retStatus);
 903         return retStatus;
 904 }
 905
 906
 907 /**************************************************************************
 908  * isd200_try_enum
 909  *
 910  * Helper function for isd200_manual_enum(). Does ENUM and READ_STATUS
 911  * and tries to analyze the status registers
 912  *
 913  * RETURNS:
 914  *    ISD status code
 915  */
 916 static int isd200_try_enum(struct us_data *us, unsigned char master_slave,
 917                            int detect )
 918 {
 919         int status = ISD200_GOOD;
 920         unsigned long endTime;
 921         struct isd200_info *info = (struct isd200_info *)us->extra;
 922         unsigned char *regs = info->RegsBuf;
 923         int recheckAsMaster = 0;
 924
 925         if ( detect )
 926                 endTime = jiffies + ISD200_ENUM_DETECT_TIMEOUT * HZ;
 927         else
 928                 endTime = jiffies + ISD200_ENUM_BSY_TIMEOUT * HZ;
 929
 930         /* loop until we detect !BSY or timeout */
 931         while(1) {
 932 #ifdef CONFIG_USB_STORAGE_DEBUG
 933                 char* mstr = master_slave == ATA_ADDRESS_DEVHEAD_STD ?
 934                         "Master" : "Slave";
 935 #endif
 936
 937                 status = isd200_action( us, ACTION_ENUM, NULL, master_slave );
 938                 if ( status != ISD200_GOOD )
 939                         break;
 940
 941                 status = isd200_action( us, ACTION_READ_STATUS,
 942                                         regs, 8 );
 943                 if ( status != ISD200_GOOD )
 944                         break;
 945
 946                 if (!detect) {
 947                         if (regs[ATA_REG_STATUS_OFFSET] & BUSY_STAT) {
 948                                 US_DEBUGP("   %s status is still BSY, try again...\n",mstr);
 949                         } else {
 950                                 US_DEBUGP("   %s status !BSY, continue with next operation\n",mstr);
 951                                 break;
 952                         }
 953                 }
 954                 /* check for BUSY_STAT and */
 955                 /* WRERR_STAT (workaround ATA Zip drive) and */
 956                 /* ERR_STAT (workaround for Archos CD-ROM) */
 957                 else if (regs[ATA_REG_STATUS_OFFSET] &
 958                          (BUSY_STAT | WRERR_STAT | ERR_STAT )) {
 959                         US_DEBUGP("   Status indicates it is not ready, try again...\n");
 960                 }
 961                 /* check for DRDY, ATA devices set DRDY after SRST */
 962                 else if (regs[ATA_REG_STATUS_OFFSET] & READY_STAT) {
 963                         US_DEBUGP("   Identified ATA device\n");
 964                         info->DeviceFlags |= DF_ATA_DEVICE;
 965                         info->DeviceHead = master_slave;
 966                         break;
 967                 }
 968                 /* check Cylinder High/Low to
 969                    determine if it is an ATAPI device
 970                 */
 971                 else if (regs[ATA_REG_HCYL_OFFSET] == 0xEB &&
 972                          regs[ATA_REG_LCYL_OFFSET] == 0x14) {
 973                         /* It seems that the RICOH
 974                            MP6200A CD/RW drive will
 975                            report itself okay as a
 976                            slave when it is really a
 977                            master. So this check again
 978                            as a master device just to
 979                            make sure it doesn't report
 980                            itself okay as a master also
 981                         */
 982                         if ((master_slave & ATA_ADDRESS_DEVHEAD_SLAVE) &&
 983                             !recheckAsMaster) {
 984                                 US_DEBUGP("   Identified ATAPI device as slave.  Rechecking again as master\n");
 985                                 recheckAsMaster = 1;
 986                                 master_slave = ATA_ADDRESS_DEVHEAD_STD;
 987                         } else {
 988                                 US_DEBUGP("   Identified ATAPI device\n");
 989                                 info->DeviceHead = master_slave;
 990
 991                                 status = isd200_atapi_soft_reset(us);
 992                                 break;
 993                         }
 994                 } else {
 995                         US_DEBUGP("   Not ATA, not ATAPI. Weird.\n");
 996                         break;
 997                 }
 998
 999                 /* check for timeout on this request */
1000                 if (time_after_eq(jiffies, endTime)) {
1001                         if (!detect)
1002                                 US_DEBUGP("   BSY check timeout, just continue with next operation...\n");
1003                         else
1004                                 US_DEBUGP("   Device detect timeout!\n");
1005                         break;
1006                 }
1007         }
1008
1009         return status;
1010 }
1011
1012 /**************************************************************************
1013  * isd200_manual_enum
1014  *
1015  * Determines if the drive attached is an ATA or ATAPI and if it is a
1016  * master or slave.
1017  *
1018  * RETURNS:
1019  *    ISD status code
1020  */
1021 static int isd200_manual_enum(struct us_data *us)
1022 {
1023         struct isd200_info *info = (struct isd200_info *)us->extra;
1024         int retStatus = ISD200_GOOD;
1025
1026         US_DEBUGP("Entering isd200_manual_enum\n");
1027
1028         retStatus = isd200_read_config(us);
1029         if (retStatus == ISD200_GOOD) {
1030                 int isslave;
1031                 /* master or slave? */
1032                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 0);
1033                 if (retStatus == ISD200_GOOD)
1034                         retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_SLAVE, 0);
1035
1036                 if (retStatus == ISD200_GOOD) {
1037                         retStatus = isd200_srst(us);
1038                         if (retStatus == ISD200_GOOD)
1039                                 /* ata or atapi? */
1040                                 retStatus = isd200_try_enum( us, ATA_ADDRESS_DEVHEAD_STD, 1);
1041                 }
1042
1043                 isslave = (info->DeviceHead & ATA_ADDRESS_DEVHEAD_SLAVE) ? 1 : 0;
1044                 if (!(info->ConfigData.ATAConfig & ATACFG_MASTER)) {
1045                         US_DEBUGP("   Setting Master/Slave selection to %d\n", isslave);
1046                         info->ConfigData.ATAConfig &= 0x3f;
1047                         info->ConfigData.ATAConfig |= (isslave<<6);
1048                         retStatus = isd200_write_config(us);
1049                 }
1050         }
1051
1052         US_DEBUGP("Leaving isd200_manual_enum %08X\n", retStatus);
1053         return(retStatus);
1054 }
1055
1056 static void isd200_fix_driveid (struct hd_driveid *id)
1057 {
1058 #ifndef __LITTLE_ENDIAN
1059 # ifdef __BIG_ENDIAN
1060         int i;
1061         u16 *stringcast;
1062
1063         id->config         = __le16_to_cpu(id->config);
1064         id->cyls           = __le16_to_cpu(id->cyls);
1065         id->reserved2      = __le16_to_cpu(id->reserved2);
1066         id->heads          = __le16_to_cpu(id->heads);
1067         id->track_bytes    = __le16_to_cpu(id->track_bytes);
1068         id->sector_bytes   = __le16_to_cpu(id->sector_bytes);
1069         id->sectors        = __le16_to_cpu(id->sectors);
1070         id->vendor0        = __le16_to_cpu(id->vendor0);
1071         id->vendor1        = __le16_to_cpu(id->vendor1);
1072         id->vendor2        = __le16_to_cpu(id->vendor2);
1073         stringcast = (u16 *)&id->serial_no[0];
1074         for (i = 0; i < (20/2); i++)
1075                 stringcast[i] = __le16_to_cpu(stringcast[i]);
1076         id->buf_type       = __le16_to_cpu(id->buf_type);
1077         id->buf_size       = __le16_to_cpu(id->buf_size);
1078         id->ecc_bytes      = __le16_to_cpu(id->ecc_bytes);
1079         stringcast = (u16 *)&id->fw_rev[0];
1080         for (i = 0; i < (8/2); i++)
1081                 stringcast[i] = __le16_to_cpu(stringcast[i]);
1082         stringcast = (u16 *)&id->model[0];
1083         for (i = 0; i < (40/2); i++)
1084                 stringcast[i] = __le16_to_cpu(stringcast[i]);
1085         id->dword_io       = __le16_to_cpu(id->dword_io);
1086         id->reserved50     = __le16_to_cpu(id->reserved50);
1087         id->field_valid    = __le16_to_cpu(id->field_valid);
1088         id->cur_cyls       = __le16_to_cpu(id->cur_cyls);
1089         id->cur_heads      = __le16_to_cpu(id->cur_heads);
1090         id->cur_sectors    = __le16_to_cpu(id->cur_sectors);
1091         id->cur_capacity0  = __le16_to_cpu(id->cur_capacity0);
1092         id->cur_capacity1  = __le16_to_cpu(id->cur_capacity1);
1093         id->lba_capacity   = __le32_to_cpu(id->lba_capacity);
1094         id->dma_1word      = __le16_to_cpu(id->dma_1word);
1095         id->dma_mword      = __le16_to_cpu(id->dma_mword);
1096         id->eide_pio_modes = __le16_to_cpu(id->eide_pio_modes);
1097         id->eide_dma_min   = __le16_to_cpu(id->eide_dma_min);
1098         id->eide_dma_time  = __le16_to_cpu(id->eide_dma_time);
1099         id->eide_pio       = __le16_to_cpu(id->eide_pio);
1100         id->eide_pio_iordy = __le16_to_cpu(id->eide_pio_iordy);
1101         for (i = 0; i < 2; ++i)
1102                 id->words69_70[i] = __le16_to_cpu(id->words69_70[i]);
1103         for (i = 0; i < 4; ++i)
1104                 id->words71_74[i] = __le16_to_cpu(id->words71_74[i]);
1105         id->queue_depth    = __le16_to_cpu(id->queue_depth);
1106         for (i = 0; i < 4; ++i)
1107                 id->words76_79[i] = __le16_to_cpu(id->words76_79[i]);
1108         id->major_rev_num  = __le16_to_cpu(id->major_rev_num);
1109         id->minor_rev_num  = __le16_to_cpu(id->minor_rev_num);
1110         id->command_set_1  = __le16_to_cpu(id->command_set_1);
1111         id->command_set_2  = __le16_to_cpu(id->command_set_2);
1112         id->cfsse          = __le16_to_cpu(id->cfsse);
1113         id->cfs_enable_1   = __le16_to_cpu(id->cfs_enable_1);
1114         id->cfs_enable_2   = __le16_to_cpu(id->cfs_enable_2);
1115         id->csf_default    = __le16_to_cpu(id->csf_default);
1116         id->dma_ultra      = __le16_to_cpu(id->dma_ultra);
1117         id->trseuc         = __le16_to_cpu(id->trseuc);
1118         id->trsEuc         = __le16_to_cpu(id->trsEuc);
1119         id->CurAPMvalues   = __le16_to_cpu(id->CurAPMvalues);
1120         id->mprc           = __le16_to_cpu(id->mprc);
1121         id->hw_config      = __le16_to_cpu(id->hw_config);
1122         id->acoustic       = __le16_to_cpu(id->acoustic);
1123         id->msrqs          = __le16_to_cpu(id->msrqs);
1124         id->sxfert         = __le16_to_cpu(id->sxfert);
1125         id->sal            = __le16_to_cpu(id->sal);
1126         id->spg            = __le32_to_cpu(id->spg);
1127         id->lba_capacity_2 = __le64_to_cpu(id->lba_capacity_2);
1128         for (i = 0; i < 22; i++)
1129                 id->words104_125[i]   = __le16_to_cpu(id->words104_125[i]);
1130         id->last_lun       = __le16_to_cpu(id->last_lun);
1131         id->word127        = __le16_to_cpu(id->word127);
1132         id->dlf            = __le16_to_cpu(id->dlf);
1133         id->csfo           = __le16_to_cpu(id->csfo);
1134         for (i = 0; i < 26; i++)
1135                 id->words130_155[i] = __le16_to_cpu(id->words130_155[i]);
1136         id->word156        = __le16_to_cpu(id->word156);
1137         for (i = 0; i < 3; i++)
1138                 id->words157_159[i] = __le16_to_cpu(id->words157_159[i]);
1139         id->cfa_power      = __le16_to_cpu(id->cfa_power);
1140         for (i = 0; i < 14; i++)
1141                 id->words161_175[i] = __le16_to_cpu(id->words161_175[i]);
1142         for (i = 0; i < 31; i++)
1143                 id->words176_205[i] = __le16_to_cpu(id->words176_205[i]);
1144         for (i = 0; i < 48; i++)
1145                 id->words206_254[i] = __le16_to_cpu(id->words206_254[i]);
1146         id->integrity_word  = __le16_to_cpu(id->integrity_word);
1147 # else
1148 #  error "Please fix <asm/byteorder.h>"
1149 # endif
1150 #endif
1151 }
1152
1153
1154 /**************************************************************************
1155  * isd200_get_inquiry_data
1156  *
1157  * Get inquiry data
1158  *
1159  * RETURNS:
1160  *    ISD status code
1161  */
1162 static int isd200_get_inquiry_data( struct us_data *us )
1163 {
1164         struct isd200_info *info = (struct isd200_info *)us->extra;
1165         int retStatus = ISD200_GOOD;
1166         struct hd_driveid *id = info->id;
1167
1168         US_DEBUGP("Entering isd200_get_inquiry_data\n");
1169
1170         /* set default to Master */
1171         info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD;
1172
1173         /* attempt to manually enumerate this device */
1174         retStatus = isd200_manual_enum(us);
1175         if (retStatus == ISD200_GOOD) {
1176                 int transferStatus;
1177
1178                 /* check for an ATA device */
1179                 if (info->DeviceFlags & DF_ATA_DEVICE) {
1180                         /* this must be an ATA device */
1181                         /* perform an ATA Command Identify */
1182                         transferStatus = isd200_action( us, ACTION_IDENTIFY,
1183                                                         id,
1184                                                         sizeof(struct hd_driveid) );
1185                         if (transferStatus != ISD200_TRANSPORT_GOOD) {
1186                                 /* Error issuing ATA Command Identify */
1187                                 US_DEBUGP("   Error issuing ATA Command Identify\n");
1188                                 retStatus = ISD200_ERROR;
1189                         } else {
1190                                 /* ATA Command Identify successful */
1191                                 int i;
1192                                 __be16 *src;
1193                                 __u16 *dest;
1194                                 isd200_fix_driveid(id);
1195
1196                                 US_DEBUGP("   Identify Data Structure:\n");
1197                                 US_DEBUGP("      config = 0x%x\n", id->config);
1198                                 US_DEBUGP("      cyls = 0x%x\n", id->cyls);
1199                                 US_DEBUGP("      heads = 0x%x\n", id->heads);
1200                                 US_DEBUGP("      track_bytes = 0x%x\n", id->track_bytes);
1201                                 US_DEBUGP("      sector_bytes = 0x%x\n", id->sector_bytes);
1202                                 US_DEBUGP("      sectors = 0x%x\n", id->sectors);
1203                                 US_DEBUGP("      serial_no[0] = 0x%x\n", id->serial_no[0]);
1204                                 US_DEBUGP("      buf_type = 0x%x\n", id->buf_type);
1205                                 US_DEBUGP("      buf_size = 0x%x\n", id->buf_size);
1206                                 US_DEBUGP("      ecc_bytes = 0x%x\n", id->ecc_bytes);
1207                                 US_DEBUGP("      fw_rev[0] = 0x%x\n", id->fw_rev[0]);
1208                                 US_DEBUGP("      model[0] = 0x%x\n", id->model[0]);
1209                                 US_DEBUGP("      max_multsect = 0x%x\n", id->max_multsect);
1210                                 US_DEBUGP("      dword_io = 0x%x\n", id->dword_io);
1211                                 US_DEBUGP("      capability = 0x%x\n", id->capability);
1212                                 US_DEBUGP("      tPIO = 0x%x\n", id->tPIO);
1213                                 US_DEBUGP("      tDMA = 0x%x\n", id->tDMA);
1214                                 US_DEBUGP("      field_valid = 0x%x\n", id->field_valid);
1215                                 US_DEBUGP("      cur_cyls = 0x%x\n", id->cur_cyls);
1216                                 US_DEBUGP("      cur_heads = 0x%x\n", id->cur_heads);
1217                                 US_DEBUGP("      cur_sectors = 0x%x\n", id->cur_sectors);
1218                                 US_DEBUGP("      cur_capacity = 0x%x\n", (id->cur_capacity1 << 16) + id->cur_capacity0 );
1219                                 US_DEBUGP("      multsect = 0x%x\n", id->multsect);
1220                                 US_DEBUGP("      lba_capacity = 0x%x\n", id->lba_capacity);
1221                                 US_DEBUGP("      command_set_1 = 0x%x\n", id->command_set_1);
1222                                 US_DEBUGP("      command_set_2 = 0x%x\n", id->command_set_2);
1223
1224                                 memset(&info->InquiryData, 0, sizeof(info->InquiryData));
1225
1226                                 /* Standard IDE interface only supports disks */
1227                                 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE;
1228
1229                                 /* The length must be at least 36 (5 + 31) */
1230                                 info->InquiryData.AdditionalLength = 0x1F;
1231
1232                                 if (id->command_set_1 & COMMANDSET_MEDIA_STATUS) {
1233                                         /* set the removable bit */
1234                                         info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE;
1235                                         info->DeviceFlags |= DF_REMOVABLE_MEDIA;
1236                                 }
1237
1238                                 /* Fill in vendor identification fields */
1239                                 src = (__be16*)id->model;
1240                                 dest = (__u16*)info->InquiryData.VendorId;
1241                                 for (i=0;i<4;i++)
1242                                         dest[i] = be16_to_cpu(src[i]);
1243
1244                                 src = (__be16*)(id->model+8);
1245                                 dest = (__u16*)info->InquiryData.ProductId;
1246                                 for (i=0;i<8;i++)
1247                                         dest[i] = be16_to_cpu(src[i]);
1248
1249                                 src = (__be16*)id->fw_rev;
1250                                 dest = (__u16*)info->InquiryData.ProductRevisionLevel;
1251                                 for (i=0;i<2;i++)
1252                                         dest[i] = be16_to_cpu(src[i]);
1253
1254                                 /* determine if it supports Media Status Notification */
1255                                 if (id->command_set_2 & COMMANDSET_MEDIA_STATUS) {
1256                                         US_DEBUGP("   Device supports Media Status Notification\n");
1257
1258                                         /* Indicate that it is enabled, even though it is not
1259                                          * This allows the lock/unlock of the media to work
1260                                          * correctly.
1261                                          */
1262                                         info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED;
1263                                 }
1264                                 else
1265                                         info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED;
1266
1267                         }
1268                 } else {
1269                         /*
1270                          * this must be an ATAPI device
1271                          * use an ATAPI protocol (Transparent SCSI)
1272                          */
1273                         us->protocol_name = "Transparent SCSI";
1274                         us->proto_handler = usb_stor_transparent_scsi_command;
1275
1276                         US_DEBUGP("Protocol changed to: %s\n", us->protocol_name);
1277
1278                         /* Free driver structure */
1279                         us->extra_destructor(info);
1280                         kfree(info);
1281                         us->extra = NULL;
1282                         us->extra_destructor = NULL;
1283                 }
1284         }
1285
1286         US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus);
1287
1288         return(retStatus);
1289 }
1290
1291 /**************************************************************************
1292  * isd200_scsi_to_ata
1293  *
1294  * Translate SCSI commands to ATA commands.
1295  *
1296  * RETURNS:
1297  *    1 if the command needs to be sent to the transport layer
1298  *    0 otherwise
1299  */
1300 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us,
1301                               union ata_cdb * ataCdb)
1302 {
1303         struct isd200_info *info = (struct isd200_info *)us->extra;
1304         struct hd_driveid *id = info->id;
1305         int sendToTransport = 1;
1306         unsigned char sectnum, head;
1307         unsigned short cylinder;
1308         unsigned long lba;
1309         unsigned long blockCount;
1310         unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 };
1311
1312         memset(ataCdb, 0, sizeof(union ata_cdb));
1313
1314         /* SCSI Command */
1315         switch (srb->cmnd[0]) {
1316         case INQUIRY:
1317                 US_DEBUGP("   ATA OUT - INQUIRY\n");
1318
1319                 /* copy InquiryData */
1320                 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData,
1321                                 sizeof(info->InquiryData), srb);
1322                 srb->result = SAM_STAT_GOOD;
1323                 sendToTransport = 0;
1324                 break;
1325
1326         case MODE_SENSE:
1327                 US_DEBUGP("   ATA OUT - SCSIOP_MODE_SENSE\n");
1328
1329                 /* Initialize the return buffer */
1330                 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb);
1331
1332                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1333                 {
1334                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1335                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1336                         ataCdb->generic.TransferBlockSize = 1;
1337                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1338                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1339                         isd200_srb_set_bufflen(srb, 0);
1340                 } else {
1341                         US_DEBUGP("   Media Status not supported, just report okay\n");
1342                         srb->result = SAM_STAT_GOOD;
1343                         sendToTransport = 0;
1344                 }
1345                 break;
1346
1347         case TEST_UNIT_READY:
1348                 US_DEBUGP("   ATA OUT - SCSIOP_TEST_UNIT_READY\n");
1349
1350                 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED)
1351                 {
1352                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1353                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1354                         ataCdb->generic.TransferBlockSize = 1;
1355                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1356                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1357                         isd200_srb_set_bufflen(srb, 0);
1358                 } else {
1359                         US_DEBUGP("   Media Status not supported, just report okay\n");
1360                         srb->result = SAM_STAT_GOOD;
1361                         sendToTransport = 0;
1362                 }
1363                 break;
1364
1365         case READ_CAPACITY:
1366         {
1367                 unsigned long capacity;
1368                 struct read_capacity_data readCapacityData;
1369
1370                 US_DEBUGP("   ATA OUT - SCSIOP_READ_CAPACITY\n");
1371
1372                 if (id->capability & CAPABILITY_LBA ) {
1373                         capacity = id->lba_capacity - 1;
1374                 } else {
1375                         capacity = (id->heads *
1376                                     id->cyls *
1377                                     id->sectors) - 1;
1378                 }
1379                 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity);
1380                 readCapacityData.BytesPerBlock = cpu_to_be32(0x200);
1381
1382                 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData,
1383                                 sizeof(readCapacityData), srb);
1384                 srb->result = SAM_STAT_GOOD;
1385                 sendToTransport = 0;
1386         }
1387         break;
1388
1389         case READ_10:
1390                 US_DEBUGP("   ATA OUT - SCSIOP_READ\n");
1391
1392                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1393                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1394
1395                 if (id->capability & CAPABILITY_LBA) {
1396                         sectnum = (unsigned char)(lba);
1397                         cylinder = (unsigned short)(lba>>8);
1398                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1399                 } else {
1400                         sectnum = (unsigned char)((lba % id->sectors) + 1);
1401                         cylinder = (unsigned short)(lba / (id->sectors *
1402                                                            id->heads));
1403                         head = (unsigned char)((lba / id->sectors) %
1404                                                id->heads);
1405                 }
1406                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1407                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1408                 ataCdb->generic.TransferBlockSize = 1;
1409                 ataCdb->generic.RegisterSelect =
1410                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1411                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1412                   REG_DEVICE_HEAD  | REG_COMMAND;
1413                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1414                 ataCdb->write.SectorNumberByte = sectnum;
1415                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1416                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1417                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1418                 ataCdb->write.CommandByte = WIN_READ;
1419                 break;
1420
1421         case WRITE_10:
1422                 US_DEBUGP("   ATA OUT - SCSIOP_WRITE\n");
1423
1424                 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]);
1425                 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8];
1426
1427                 if (id->capability & CAPABILITY_LBA) {
1428                         sectnum = (unsigned char)(lba);
1429                         cylinder = (unsigned short)(lba>>8);
1430                         head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F);
1431                 } else {
1432                         sectnum = (unsigned char)((lba % id->sectors) + 1);
1433                         cylinder = (unsigned short)(lba / (id->sectors * id->heads));
1434                         head = (unsigned char)((lba / id->sectors) % id->heads);
1435                 }
1436                 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1437                 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1438                 ataCdb->generic.TransferBlockSize = 1;
1439                 ataCdb->generic.RegisterSelect =
1440                   REG_SECTOR_COUNT | REG_SECTOR_NUMBER |
1441                   REG_CYLINDER_LOW | REG_CYLINDER_HIGH |
1442                   REG_DEVICE_HEAD  | REG_COMMAND;
1443                 ataCdb->write.SectorCountByte = (unsigned char)blockCount;
1444                 ataCdb->write.SectorNumberByte = sectnum;
1445                 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8);
1446                 ataCdb->write.CylinderLowByte = (unsigned char)cylinder;
1447                 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD);
1448                 ataCdb->write.CommandByte = WIN_WRITE;
1449                 break;
1450
1451         case ALLOW_MEDIUM_REMOVAL:
1452                 US_DEBUGP("   ATA OUT - SCSIOP_MEDIUM_REMOVAL\n");
1453
1454                 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) {
1455                         US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1456
1457                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1458                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1459                         ataCdb->generic.TransferBlockSize = 1;
1460                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1461                         ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ?
1462                                 WIN_DOORLOCK : WIN_DOORUNLOCK;
1463                         isd200_srb_set_bufflen(srb, 0);
1464                 } else {
1465                         US_DEBUGP("   Not removeable media, just report okay\n");
1466                         srb->result = SAM_STAT_GOOD;
1467                         sendToTransport = 0;
1468                 }
1469                 break;
1470
1471         case START_STOP:
1472                 US_DEBUGP("   ATA OUT - SCSIOP_START_STOP_UNIT\n");
1473                 US_DEBUGP("   srb->cmnd[4] = 0x%X\n", srb->cmnd[4]);
1474
1475                 if ((srb->cmnd[4] & 0x3) == 0x2) {
1476                         US_DEBUGP("   Media Eject\n");
1477                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1478                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1479                         ataCdb->generic.TransferBlockSize = 0;
1480                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1481                         ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT;
1482                 } else if ((srb->cmnd[4] & 0x3) == 0x1) {
1483                         US_DEBUGP("   Get Media Status\n");
1484                         ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand;
1485                         ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand;
1486                         ataCdb->generic.TransferBlockSize = 1;
1487                         ataCdb->generic.RegisterSelect = REG_COMMAND;
1488                         ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS;
1489                         isd200_srb_set_bufflen(srb, 0);
1490                 } else {
1491                         US_DEBUGP("   Nothing to do, just report okay\n");
1492                         srb->result = SAM_STAT_GOOD;
1493                         sendToTransport = 0;
1494                 }
1495                 break;
1496
1497         default:
1498                 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]);
1499                 srb->result = DID_ERROR << 16;
1500                 sendToTransport = 0;
1501                 break;
1502         }
1503
1504         return(sendToTransport);
1505 }
1506
1507
1508 /**************************************************************************
1509  * isd200_free_info
1510  *
1511  * Frees the driver structure.
1512  */
1513 static void isd200_free_info_ptrs(void *info_)
1514 {
1515         struct isd200_info *info = (struct isd200_info *) info_;
1516
1517         if (info) {
1518                 kfree(info->id);
1519                 kfree(info->RegsBuf);
1520                 kfree(info->srb.sense_buffer);
1521         }
1522 }
1523
1524 /**************************************************************************
1525  * isd200_init_info
1526  *
1527  * Allocates (if necessary) and initializes the driver structure.
1528  *
1529  * RETURNS:
1530  *    ISD status code
1531  */
1532 static int isd200_init_info(struct us_data *us)
1533 {
1534         int retStatus = ISD200_GOOD;
1535         struct isd200_info *info;
1536
1537         info = (struct isd200_info *)
1538                         kzalloc(sizeof(struct isd200_info), GFP_KERNEL);
1539         if (!info)
1540                 retStatus = ISD200_ERROR;
1541         else {
1542                 info->id = (struct hd_driveid *)
1543                                 kzalloc(sizeof(struct hd_driveid), GFP_KERNEL);
1544                 info->RegsBuf = (unsigned char *)
1545                                 kmalloc(sizeof(info->ATARegs), GFP_KERNEL);
1546                 info->srb.sense_buffer =
1547                                 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL);
1548                 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) {
1549                         isd200_free_info_ptrs(info);
1550                         kfree(info);
1551                         retStatus = ISD200_ERROR;
1552                 }
1553         }
1554
1555         if (retStatus == ISD200_GOOD) {
1556                 us->extra = info;
1557                 us->extra_destructor = isd200_free_info_ptrs;
1558         } else
1559                 US_DEBUGP("ERROR - kmalloc failure\n");
1560
1561         return retStatus;
1562 }
1563
1564 /**************************************************************************
1565  * Initialization for the ISD200
1566  */
1567
1568 static int isd200_Initialization(struct us_data *us)
1569 {
1570         US_DEBUGP("ISD200 Initialization...\n");
1571
1572         /* Initialize ISD200 info struct */
1573
1574         if (isd200_init_info(us) == ISD200_ERROR) {
1575                 US_DEBUGP("ERROR Initializing ISD200 Info struct\n");
1576         } else {
1577                 /* Get device specific data */
1578
1579                 if (isd200_get_inquiry_data(us) != ISD200_GOOD)
1580                         US_DEBUGP("ISD200 Initialization Failure\n");
1581                 else
1582                         US_DEBUGP("ISD200 Initialization complete\n");
1583         }
1584
1585         return 0;
1586 }
1587
1588
1589 /**************************************************************************
1590  * Protocol and Transport for the ISD200 ASIC
1591  *
1592  * This protocol and transport are for ATA devices connected to an ISD200
1593  * ASIC.  An ATAPI device that is conected as a slave device will be
1594  * detected in the driver initialization function and the protocol will
1595  * be changed to an ATAPI protocol (Transparent SCSI).
1596  *
1597  */
1598
1599 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us)
1600 {
1601         int sendToTransport = 1, orig_bufflen;
1602         union ata_cdb ataCdb;
1603
1604         /* Make sure driver was initialized */
1605
1606         if (us->extra == NULL)
1607                 US_DEBUGP("ERROR Driver not initialized\n");
1608
1609         scsi_set_resid(srb, 0);
1610         /* scsi_bufflen might change in protocol translation to ata */
1611         orig_bufflen = scsi_bufflen(srb);
1612         sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb);
1613
1614         /* send the command to the transport layer */
1615         if (sendToTransport)
1616                 isd200_invoke_transport(us, srb, &ataCdb);
1617
1618         isd200_srb_set_bufflen(srb, orig_bufflen);
1619 }
1620
1621 static int isd200_probe(struct usb_interface *intf,
1622                          const struct usb_device_id *id)
1623 {
1624         struct us_data *us;
1625         int result;
1626
1627         result = usb_stor_probe1(&us, intf, id,
1628                         (id - isd200_usb_ids) + isd200_unusual_dev_list);
1629         if (result)
1630                 return result;
1631
1632         us->protocol_name = "ISD200 ATA/ATAPI";
1633         us->proto_handler = isd200_ata_command;
1634
1635         result = usb_stor_probe2(us);
1636         return result;
1637 }
1638
1639 static struct usb_driver isd200_driver = {
1640         .name =         "ums-isd200",
1641         .probe =        isd200_probe,
1642         .disconnect =   usb_stor_disconnect,
1643         .suspend =      usb_stor_suspend,
1644         .resume =       usb_stor_resume,
1645         .reset_resume = usb_stor_reset_resume,
1646         .pre_reset =    usb_stor_pre_reset,
1647         .post_reset =   usb_stor_post_reset,
1648         .id_table =     isd200_usb_ids,
1649         .soft_unbind =  1,
1650 };
1651
1652 static int __init isd200_init(void)
1653 {
1654         return usb_register(&isd200_driver);
1655 }
1656
1657 static void __exit isd200_exit(void)
1658 {
1659         usb_deregister(&isd200_driver);
1660 }
1661
1662 module_init(isd200_init);
1663 module_exit(isd200_exit);