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/ata.h> 50 #include <linux/hdreg.h> 51 #include <linux/scatterlist.h> 52 53 #include <scsi/scsi.h> 54 #include <scsi/scsi_cmnd.h> 55 #include <scsi/scsi_device.h> 56 57 #include "usb.h" 58 #include "transport.h" 59 #include "protocol.h" 60 #include "debug.h" 61 #include "scsiglue.h" 62 63 #define DRV_NAME "ums-isd200" 64 65 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC"); 66 MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>"); 67 MODULE_LICENSE("GPL"); 68 69 static int isd200_Initialization(struct us_data *us); 70 71 72 /* 73 * The table of devices 74 */ 75 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ 76 vendorName, productName, useProtocol, useTransport, \ 77 initFunction, flags) \ 78 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ 79 .driver_info = (flags) } 80 81 static struct usb_device_id isd200_usb_ids[] = { 82 # include "unusual_isd200.h" 83 { } /* Terminating entry */ 84 }; 85 MODULE_DEVICE_TABLE(usb, isd200_usb_ids); 86 87 #undef UNUSUAL_DEV 88 89 /* 90 * The flags table 91 */ 92 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ 93 vendor_name, product_name, use_protocol, use_transport, \ 94 init_function, Flags) \ 95 { \ 96 .vendorName = vendor_name, \ 97 .productName = product_name, \ 98 .useProtocol = use_protocol, \ 99 .useTransport = use_transport, \ 100 .initFunction = init_function, \ 101 } 102 103 static struct us_unusual_dev isd200_unusual_dev_list[] = { 104 # include "unusual_isd200.h" 105 { } /* Terminating entry */ 106 }; 107 108 #undef UNUSUAL_DEV 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 u16 *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 & ATA_MCR) { 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 & ATA_TRK0NF) { 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 & ATA_UNC) { 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 /* static to prevent this large struct being placed on the valuable stack */ 493 static struct scsi_device srb_dev; 494 struct isd200_info *info = (struct isd200_info *)us->extra; 495 struct scsi_cmnd *srb = &info->srb; 496 int status; 497 498 memset(&ata, 0, sizeof(ata)); 499 srb->cmnd = info->cmnd; 500 srb->device = &srb_dev; 501 502 ata.generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 503 ata.generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 504 ata.generic.TransferBlockSize = 1; 505 506 switch ( action ) { 507 case ACTION_READ_STATUS: 508 usb_stor_dbg(us, " isd200_action(READ_STATUS)\n"); 509 ata.generic.ActionSelect = ACTION_SELECT_0|ACTION_SELECT_2; 510 ata.generic.RegisterSelect = 511 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 512 REG_STATUS | REG_ERROR; 513 isd200_set_srb(info, DMA_FROM_DEVICE, pointer, value); 514 break; 515 516 case ACTION_ENUM: 517 usb_stor_dbg(us, " isd200_action(ENUM,0x%02x)\n", value); 518 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 519 ACTION_SELECT_3|ACTION_SELECT_4| 520 ACTION_SELECT_5; 521 ata.generic.RegisterSelect = REG_DEVICE_HEAD; 522 ata.write.DeviceHeadByte = value; 523 isd200_set_srb(info, DMA_NONE, NULL, 0); 524 break; 525 526 case ACTION_RESET: 527 usb_stor_dbg(us, " isd200_action(RESET)\n"); 528 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 529 ACTION_SELECT_3|ACTION_SELECT_4; 530 ata.generic.RegisterSelect = REG_DEVICE_CONTROL; 531 ata.write.DeviceControlByte = ATA_DC_RESET_CONTROLLER; 532 isd200_set_srb(info, DMA_NONE, NULL, 0); 533 break; 534 535 case ACTION_REENABLE: 536 usb_stor_dbg(us, " isd200_action(REENABLE)\n"); 537 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_2| 538 ACTION_SELECT_3|ACTION_SELECT_4; 539 ata.generic.RegisterSelect = REG_DEVICE_CONTROL; 540 ata.write.DeviceControlByte = ATA_DC_REENABLE_CONTROLLER; 541 isd200_set_srb(info, DMA_NONE, NULL, 0); 542 break; 543 544 case ACTION_SOFT_RESET: 545 usb_stor_dbg(us, " isd200_action(SOFT_RESET)\n"); 546 ata.generic.ActionSelect = ACTION_SELECT_1|ACTION_SELECT_5; 547 ata.generic.RegisterSelect = REG_DEVICE_HEAD | REG_COMMAND; 548 ata.write.DeviceHeadByte = info->DeviceHead; 549 ata.write.CommandByte = ATA_CMD_DEV_RESET; 550 isd200_set_srb(info, DMA_NONE, NULL, 0); 551 break; 552 553 case ACTION_IDENTIFY: 554 usb_stor_dbg(us, " isd200_action(IDENTIFY)\n"); 555 ata.generic.RegisterSelect = REG_COMMAND; 556 ata.write.CommandByte = ATA_CMD_ID_ATA; 557 isd200_set_srb(info, DMA_FROM_DEVICE, info->id, 558 ATA_ID_WORDS * 2); 559 break; 560 561 default: 562 usb_stor_dbg(us, "Error: Undefined action %d\n", action); 563 return ISD200_ERROR; 564 } 565 566 memcpy(srb->cmnd, &ata, sizeof(ata.generic)); 567 srb->cmd_len = sizeof(ata.generic); 568 status = usb_stor_Bulk_transport(srb, us); 569 if (status == USB_STOR_TRANSPORT_GOOD) 570 status = ISD200_GOOD; 571 else { 572 usb_stor_dbg(us, " isd200_action(0x%02x) error: %d\n", 573 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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Error reading ATA registers\n"); 601 retStatus = ISD200_ERROR; 602 } else { 603 memcpy(info->ATARegs, info->RegsBuf, sizeof(info->ATARegs)); 604 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- transport indicates protocol failure\n"); 648 srb->result = SAM_STAT_CHECK_CONDITION; 649 return; 650 651 case USB_STOR_TRANSPORT_FAILED: 652 usb_stor_dbg(us, "-- transport indicates command failure\n"); 653 need_auto_sense = 1; 654 break; 655 656 case USB_STOR_TRANSPORT_ERROR: 657 usb_stor_dbg(us, "-- transport indicates transport error\n"); 658 srb->result = DID_ERROR << 16; 659 /* Need reset here */ 660 return; 661 662 default: 663 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- 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 usb_stor_dbg(us, "-- 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 us_data *us, struct isd200_info *info) 717 { 718 usb_stor_dbg(us, " Event Notification: 0x%x\n", 719 info->ConfigData.EventNotification); 720 usb_stor_dbg(us, " External Clock: 0x%x\n", 721 info->ConfigData.ExternalClock); 722 usb_stor_dbg(us, " ATA Init Timeout: 0x%x\n", 723 info->ConfigData.ATAInitTimeout); 724 usb_stor_dbg(us, " ATAPI Command Block Size: 0x%x\n", 725 (info->ConfigData.ATAConfig & ATACFG_BLOCKSIZE) >> 6); 726 usb_stor_dbg(us, " Master/Slave Selection: 0x%x\n", 727 info->ConfigData.ATAConfig & ATACFG_MASTER); 728 usb_stor_dbg(us, " ATAPI Reset: 0x%x\n", 729 info->ConfigData.ATAConfig & ATACFG_ATAPI_RESET); 730 usb_stor_dbg(us, " ATA Timing: 0x%x\n", 731 info->ConfigData.ATAConfig & ATACFG_TIMING); 732 usb_stor_dbg(us, " ATA Major Command: 0x%x\n", 733 info->ConfigData.ATAMajorCommand); 734 usb_stor_dbg(us, " ATA Minor Command: 0x%x\n", 735 info->ConfigData.ATAMinorCommand); 736 usb_stor_dbg(us, " Init Status: 0x%x\n", 737 info->ConfigData.ATAExtraConfig & ATACFGE_INIT_STATUS); 738 usb_stor_dbg(us, " Config Descriptor 2: 0x%x\n", 739 info->ConfigData.ATAExtraConfig & ATACFGE_CONF_DESC2); 740 usb_stor_dbg(us, " Skip Device Boot: 0x%x\n", 741 info->ConfigData.ATAExtraConfig & ATACFGE_SKIP_BOOT); 742 usb_stor_dbg(us, " ATA 3 State Suspend: 0x%x\n", 743 info->ConfigData.ATAExtraConfig & ATACFGE_STATE_SUSPEND); 744 usb_stor_dbg(us, " Descriptor Override: 0x%x\n", 745 info->ConfigData.ATAExtraConfig & ATACFGE_DESC_OVERRIDE); 746 usb_stor_dbg(us, " Last LUN Identifier: 0x%x\n", 747 info->ConfigData.ATAExtraConfig & ATACFGE_LAST_LUN); 748 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "Entering isd200_write_config\n"); 769 usb_stor_dbg(us, " Writing the following ISD200 Config Data:\n"); 770 isd200_log_config(us, 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 usb_stor_dbg(us, " ISD200 Config Data was written successfully\n"); 786 } else { 787 usb_stor_dbg(us, " Request to write ISD200 Config Data failed!\n"); 788 retStatus = ISD200_ERROR; 789 } 790 791 usb_stor_dbg(us, "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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Retrieved the following ISD200 Config Data:\n"); 828 #ifdef CONFIG_USB_STORAGE_DEBUG 829 isd200_log_config(us, info); 830 #endif 831 } else { 832 usb_stor_dbg(us, " Request to get ISD200 Config Data failed!\n"); 833 retStatus = ISD200_ERROR; 834 } 835 836 usb_stor_dbg(us, "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 usb_stor_dbg(us, "Entering isd200_atapi_soft_reset\n"); 855 856 transferStatus = isd200_action( us, ACTION_SOFT_RESET, NULL, 0 ); 857 if (transferStatus != ISD200_TRANSPORT_GOOD) { 858 usb_stor_dbg(us, " Error issuing Atapi Soft Reset\n"); 859 retStatus = ISD200_ERROR; 860 } 861 862 usb_stor_dbg(us, "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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "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) { 932 933 status = isd200_action( us, ACTION_ENUM, NULL, master_slave ); 934 if ( status != ISD200_GOOD ) 935 break; 936 937 status = isd200_action( us, ACTION_READ_STATUS, 938 regs, 8 ); 939 if ( status != ISD200_GOOD ) 940 break; 941 942 if (!detect) { 943 if (regs[ATA_REG_STATUS_OFFSET] & ATA_BUSY) { 944 usb_stor_dbg(us, " %s status is still BSY, try again...\n", 945 master_slave == ATA_ADDRESS_DEVHEAD_STD ? 946 "Master" : "Slave"); 947 } else { 948 usb_stor_dbg(us, " %s status !BSY, continue with next operation\n", 949 master_slave == ATA_ADDRESS_DEVHEAD_STD ? 950 "Master" : "Slave"); 951 break; 952 } 953 } 954 /* check for ATA_BUSY and */ 955 /* ATA_DF (workaround ATA Zip drive) and */ 956 /* ATA_ERR (workaround for Archos CD-ROM) */ 957 else if (regs[ATA_REG_STATUS_OFFSET] & 958 (ATA_BUSY | ATA_DF | ATA_ERR)) { 959 usb_stor_dbg(us, " 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] & ATA_DRDY) { 963 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " Identified ATAPI device as slave. Rechecking again as master\n"); 985 recheckAsMaster = 1; 986 master_slave = ATA_ADDRESS_DEVHEAD_STD; 987 } else { 988 usb_stor_dbg(us, " Identified ATAPI device\n"); 989 info->DeviceHead = master_slave; 990 991 status = isd200_atapi_soft_reset(us); 992 break; 993 } 994 } else { 995 usb_stor_dbg(us, " 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 usb_stor_dbg(us, " BSY check timeout, just continue with next operation...\n"); 1003 else 1004 usb_stor_dbg(us, " 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 usb_stor_dbg(us, "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 usb_stor_dbg(us, " Setting Master/Slave selection to %d\n", 1046 isslave); 1047 info->ConfigData.ATAConfig &= 0x3f; 1048 info->ConfigData.ATAConfig |= (isslave<<6); 1049 retStatus = isd200_write_config(us); 1050 } 1051 } 1052 1053 usb_stor_dbg(us, "Leaving isd200_manual_enum %08X\n", retStatus); 1054 return(retStatus); 1055 } 1056 1057 static void isd200_fix_driveid(u16 *id) 1058 { 1059 #ifndef __LITTLE_ENDIAN 1060 # ifdef __BIG_ENDIAN 1061 int i; 1062 1063 for (i = 0; i < ATA_ID_WORDS; i++) 1064 id[i] = __le16_to_cpu(id[i]); 1065 # else 1066 # error "Please fix <asm/byteorder.h>" 1067 # endif 1068 #endif 1069 } 1070 1071 static void isd200_dump_driveid(struct us_data *us, u16 *id) 1072 { 1073 usb_stor_dbg(us, " Identify Data Structure:\n"); 1074 usb_stor_dbg(us, " config = 0x%x\n", id[ATA_ID_CONFIG]); 1075 usb_stor_dbg(us, " cyls = 0x%x\n", id[ATA_ID_CYLS]); 1076 usb_stor_dbg(us, " heads = 0x%x\n", id[ATA_ID_HEADS]); 1077 usb_stor_dbg(us, " track_bytes = 0x%x\n", id[4]); 1078 usb_stor_dbg(us, " sector_bytes = 0x%x\n", id[5]); 1079 usb_stor_dbg(us, " sectors = 0x%x\n", id[ATA_ID_SECTORS]); 1080 usb_stor_dbg(us, " serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]); 1081 usb_stor_dbg(us, " buf_type = 0x%x\n", id[20]); 1082 usb_stor_dbg(us, " buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]); 1083 usb_stor_dbg(us, " ecc_bytes = 0x%x\n", id[22]); 1084 usb_stor_dbg(us, " fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]); 1085 usb_stor_dbg(us, " model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]); 1086 usb_stor_dbg(us, " max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff); 1087 usb_stor_dbg(us, " dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]); 1088 usb_stor_dbg(us, " capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8); 1089 usb_stor_dbg(us, " tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8); 1090 usb_stor_dbg(us, " tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8); 1091 usb_stor_dbg(us, " field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]); 1092 usb_stor_dbg(us, " cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]); 1093 usb_stor_dbg(us, " cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]); 1094 usb_stor_dbg(us, " cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]); 1095 usb_stor_dbg(us, " cur_capacity = 0x%x\n", ata_id_u32(id, 57)); 1096 usb_stor_dbg(us, " multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff); 1097 usb_stor_dbg(us, " lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY)); 1098 usb_stor_dbg(us, " command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]); 1099 usb_stor_dbg(us, " command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]); 1100 } 1101 1102 /************************************************************************** 1103 * isd200_get_inquiry_data 1104 * 1105 * Get inquiry data 1106 * 1107 * RETURNS: 1108 * ISD status code 1109 */ 1110 static int isd200_get_inquiry_data( struct us_data *us ) 1111 { 1112 struct isd200_info *info = (struct isd200_info *)us->extra; 1113 int retStatus = ISD200_GOOD; 1114 u16 *id = info->id; 1115 1116 usb_stor_dbg(us, "Entering isd200_get_inquiry_data\n"); 1117 1118 /* set default to Master */ 1119 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD; 1120 1121 /* attempt to manually enumerate this device */ 1122 retStatus = isd200_manual_enum(us); 1123 if (retStatus == ISD200_GOOD) { 1124 int transferStatus; 1125 1126 /* check for an ATA device */ 1127 if (info->DeviceFlags & DF_ATA_DEVICE) { 1128 /* this must be an ATA device */ 1129 /* perform an ATA Command Identify */ 1130 transferStatus = isd200_action( us, ACTION_IDENTIFY, 1131 id, ATA_ID_WORDS * 2); 1132 if (transferStatus != ISD200_TRANSPORT_GOOD) { 1133 /* Error issuing ATA Command Identify */ 1134 usb_stor_dbg(us, " Error issuing ATA Command Identify\n"); 1135 retStatus = ISD200_ERROR; 1136 } else { 1137 /* ATA Command Identify successful */ 1138 int i; 1139 __be16 *src; 1140 __u16 *dest; 1141 1142 isd200_fix_driveid(id); 1143 isd200_dump_driveid(us, id); 1144 1145 memset(&info->InquiryData, 0, sizeof(info->InquiryData)); 1146 1147 /* Standard IDE interface only supports disks */ 1148 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE; 1149 1150 /* The length must be at least 36 (5 + 31) */ 1151 info->InquiryData.AdditionalLength = 0x1F; 1152 1153 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) { 1154 /* set the removable bit */ 1155 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE; 1156 info->DeviceFlags |= DF_REMOVABLE_MEDIA; 1157 } 1158 1159 /* Fill in vendor identification fields */ 1160 src = (__be16 *)&id[ATA_ID_PROD]; 1161 dest = (__u16*)info->InquiryData.VendorId; 1162 for (i=0;i<4;i++) 1163 dest[i] = be16_to_cpu(src[i]); 1164 1165 src = (__be16 *)&id[ATA_ID_PROD + 8/2]; 1166 dest = (__u16*)info->InquiryData.ProductId; 1167 for (i=0;i<8;i++) 1168 dest[i] = be16_to_cpu(src[i]); 1169 1170 src = (__be16 *)&id[ATA_ID_FW_REV]; 1171 dest = (__u16*)info->InquiryData.ProductRevisionLevel; 1172 for (i=0;i<2;i++) 1173 dest[i] = be16_to_cpu(src[i]); 1174 1175 /* determine if it supports Media Status Notification */ 1176 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) { 1177 usb_stor_dbg(us, " Device supports Media Status Notification\n"); 1178 1179 /* Indicate that it is enabled, even though it is not 1180 * This allows the lock/unlock of the media to work 1181 * correctly. 1182 */ 1183 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED; 1184 } 1185 else 1186 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED; 1187 1188 } 1189 } else { 1190 /* 1191 * this must be an ATAPI device 1192 * use an ATAPI protocol (Transparent SCSI) 1193 */ 1194 us->protocol_name = "Transparent SCSI"; 1195 us->proto_handler = usb_stor_transparent_scsi_command; 1196 1197 usb_stor_dbg(us, "Protocol changed to: %s\n", 1198 us->protocol_name); 1199 1200 /* Free driver structure */ 1201 us->extra_destructor(info); 1202 kfree(info); 1203 us->extra = NULL; 1204 us->extra_destructor = NULL; 1205 } 1206 } 1207 1208 usb_stor_dbg(us, "Leaving isd200_get_inquiry_data %08X\n", retStatus); 1209 1210 return(retStatus); 1211 } 1212 1213 /************************************************************************** 1214 * isd200_scsi_to_ata 1215 * 1216 * Translate SCSI commands to ATA commands. 1217 * 1218 * RETURNS: 1219 * 1 if the command needs to be sent to the transport layer 1220 * 0 otherwise 1221 */ 1222 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us, 1223 union ata_cdb * ataCdb) 1224 { 1225 struct isd200_info *info = (struct isd200_info *)us->extra; 1226 u16 *id = info->id; 1227 int sendToTransport = 1; 1228 unsigned char sectnum, head; 1229 unsigned short cylinder; 1230 unsigned long lba; 1231 unsigned long blockCount; 1232 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 1233 1234 memset(ataCdb, 0, sizeof(union ata_cdb)); 1235 1236 /* SCSI Command */ 1237 switch (srb->cmnd[0]) { 1238 case INQUIRY: 1239 usb_stor_dbg(us, " ATA OUT - INQUIRY\n"); 1240 1241 /* copy InquiryData */ 1242 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData, 1243 sizeof(info->InquiryData), srb); 1244 srb->result = SAM_STAT_GOOD; 1245 sendToTransport = 0; 1246 break; 1247 1248 case MODE_SENSE: 1249 usb_stor_dbg(us, " ATA OUT - SCSIOP_MODE_SENSE\n"); 1250 1251 /* Initialize the return buffer */ 1252 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb); 1253 1254 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1255 { 1256 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1257 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1258 ataCdb->generic.TransferBlockSize = 1; 1259 ataCdb->generic.RegisterSelect = REG_COMMAND; 1260 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1261 isd200_srb_set_bufflen(srb, 0); 1262 } else { 1263 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1264 srb->result = SAM_STAT_GOOD; 1265 sendToTransport = 0; 1266 } 1267 break; 1268 1269 case TEST_UNIT_READY: 1270 usb_stor_dbg(us, " ATA OUT - SCSIOP_TEST_UNIT_READY\n"); 1271 1272 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1273 { 1274 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1275 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1276 ataCdb->generic.TransferBlockSize = 1; 1277 ataCdb->generic.RegisterSelect = REG_COMMAND; 1278 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1279 isd200_srb_set_bufflen(srb, 0); 1280 } else { 1281 usb_stor_dbg(us, " Media Status not supported, just report okay\n"); 1282 srb->result = SAM_STAT_GOOD; 1283 sendToTransport = 0; 1284 } 1285 break; 1286 1287 case READ_CAPACITY: 1288 { 1289 unsigned long capacity; 1290 struct read_capacity_data readCapacityData; 1291 1292 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ_CAPACITY\n"); 1293 1294 if (ata_id_has_lba(id)) 1295 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1; 1296 else 1297 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] * 1298 id[ATA_ID_SECTORS]) - 1; 1299 1300 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity); 1301 readCapacityData.BytesPerBlock = cpu_to_be32(0x200); 1302 1303 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData, 1304 sizeof(readCapacityData), srb); 1305 srb->result = SAM_STAT_GOOD; 1306 sendToTransport = 0; 1307 } 1308 break; 1309 1310 case READ_10: 1311 usb_stor_dbg(us, " ATA OUT - SCSIOP_READ\n"); 1312 1313 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1314 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1315 1316 if (ata_id_has_lba(id)) { 1317 sectnum = (unsigned char)(lba); 1318 cylinder = (unsigned short)(lba>>8); 1319 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1320 } else { 1321 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1322 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1323 id[ATA_ID_HEADS])); 1324 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1325 id[ATA_ID_HEADS]); 1326 } 1327 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1328 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1329 ataCdb->generic.TransferBlockSize = 1; 1330 ataCdb->generic.RegisterSelect = 1331 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1332 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1333 REG_DEVICE_HEAD | REG_COMMAND; 1334 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1335 ataCdb->write.SectorNumberByte = sectnum; 1336 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1337 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1338 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1339 ataCdb->write.CommandByte = ATA_CMD_PIO_READ; 1340 break; 1341 1342 case WRITE_10: 1343 usb_stor_dbg(us, " ATA OUT - SCSIOP_WRITE\n"); 1344 1345 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1346 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1347 1348 if (ata_id_has_lba(id)) { 1349 sectnum = (unsigned char)(lba); 1350 cylinder = (unsigned short)(lba>>8); 1351 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1352 } else { 1353 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1354 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1355 id[ATA_ID_HEADS])); 1356 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1357 id[ATA_ID_HEADS]); 1358 } 1359 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1360 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1361 ataCdb->generic.TransferBlockSize = 1; 1362 ataCdb->generic.RegisterSelect = 1363 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1364 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1365 REG_DEVICE_HEAD | REG_COMMAND; 1366 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1367 ataCdb->write.SectorNumberByte = sectnum; 1368 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1369 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1370 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1371 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE; 1372 break; 1373 1374 case ALLOW_MEDIUM_REMOVAL: 1375 usb_stor_dbg(us, " ATA OUT - SCSIOP_MEDIUM_REMOVAL\n"); 1376 1377 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) { 1378 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", 1379 srb->cmnd[4]); 1380 1381 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1382 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1383 ataCdb->generic.TransferBlockSize = 1; 1384 ataCdb->generic.RegisterSelect = REG_COMMAND; 1385 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ? 1386 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; 1387 isd200_srb_set_bufflen(srb, 0); 1388 } else { 1389 usb_stor_dbg(us, " Not removeable media, just report okay\n"); 1390 srb->result = SAM_STAT_GOOD; 1391 sendToTransport = 0; 1392 } 1393 break; 1394 1395 case START_STOP: 1396 usb_stor_dbg(us, " ATA OUT - SCSIOP_START_STOP_UNIT\n"); 1397 usb_stor_dbg(us, " srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1398 1399 if ((srb->cmnd[4] & 0x3) == 0x2) { 1400 usb_stor_dbg(us, " Media Eject\n"); 1401 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1402 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1403 ataCdb->generic.TransferBlockSize = 0; 1404 ataCdb->generic.RegisterSelect = REG_COMMAND; 1405 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT; 1406 } else if ((srb->cmnd[4] & 0x3) == 0x1) { 1407 usb_stor_dbg(us, " Get Media Status\n"); 1408 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1409 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1410 ataCdb->generic.TransferBlockSize = 1; 1411 ataCdb->generic.RegisterSelect = REG_COMMAND; 1412 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1413 isd200_srb_set_bufflen(srb, 0); 1414 } else { 1415 usb_stor_dbg(us, " Nothing to do, just report okay\n"); 1416 srb->result = SAM_STAT_GOOD; 1417 sendToTransport = 0; 1418 } 1419 break; 1420 1421 default: 1422 usb_stor_dbg(us, "Unsupported SCSI command - 0x%X\n", 1423 srb->cmnd[0]); 1424 srb->result = DID_ERROR << 16; 1425 sendToTransport = 0; 1426 break; 1427 } 1428 1429 return(sendToTransport); 1430 } 1431 1432 1433 /************************************************************************** 1434 * isd200_free_info 1435 * 1436 * Frees the driver structure. 1437 */ 1438 static void isd200_free_info_ptrs(void *info_) 1439 { 1440 struct isd200_info *info = (struct isd200_info *) info_; 1441 1442 if (info) { 1443 kfree(info->id); 1444 kfree(info->RegsBuf); 1445 kfree(info->srb.sense_buffer); 1446 } 1447 } 1448 1449 /************************************************************************** 1450 * isd200_init_info 1451 * 1452 * Allocates (if necessary) and initializes the driver structure. 1453 * 1454 * RETURNS: 1455 * ISD status code 1456 */ 1457 static int isd200_init_info(struct us_data *us) 1458 { 1459 struct isd200_info *info; 1460 1461 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); 1462 if (!info) 1463 return ISD200_ERROR; 1464 1465 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL); 1466 info->RegsBuf = kmalloc(sizeof(info->ATARegs), GFP_KERNEL); 1467 info->srb.sense_buffer = kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); 1468 1469 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) { 1470 isd200_free_info_ptrs(info); 1471 kfree(info); 1472 return ISD200_ERROR; 1473 } 1474 1475 us->extra = info; 1476 us->extra_destructor = isd200_free_info_ptrs; 1477 1478 return ISD200_GOOD; 1479 } 1480 1481 /************************************************************************** 1482 * Initialization for the ISD200 1483 */ 1484 1485 static int isd200_Initialization(struct us_data *us) 1486 { 1487 usb_stor_dbg(us, "ISD200 Initialization...\n"); 1488 1489 /* Initialize ISD200 info struct */ 1490 1491 if (isd200_init_info(us) == ISD200_ERROR) { 1492 usb_stor_dbg(us, "ERROR Initializing ISD200 Info struct\n"); 1493 } else { 1494 /* Get device specific data */ 1495 1496 if (isd200_get_inquiry_data(us) != ISD200_GOOD) 1497 usb_stor_dbg(us, "ISD200 Initialization Failure\n"); 1498 else 1499 usb_stor_dbg(us, "ISD200 Initialization complete\n"); 1500 } 1501 1502 return 0; 1503 } 1504 1505 1506 /************************************************************************** 1507 * Protocol and Transport for the ISD200 ASIC 1508 * 1509 * This protocol and transport are for ATA devices connected to an ISD200 1510 * ASIC. An ATAPI device that is connected as a slave device will be 1511 * detected in the driver initialization function and the protocol will 1512 * be changed to an ATAPI protocol (Transparent SCSI). 1513 * 1514 */ 1515 1516 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us) 1517 { 1518 int sendToTransport = 1, orig_bufflen; 1519 union ata_cdb ataCdb; 1520 1521 /* Make sure driver was initialized */ 1522 1523 if (us->extra == NULL) 1524 usb_stor_dbg(us, "ERROR Driver not initialized\n"); 1525 1526 scsi_set_resid(srb, 0); 1527 /* scsi_bufflen might change in protocol translation to ata */ 1528 orig_bufflen = scsi_bufflen(srb); 1529 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb); 1530 1531 /* send the command to the transport layer */ 1532 if (sendToTransport) 1533 isd200_invoke_transport(us, srb, &ataCdb); 1534 1535 isd200_srb_set_bufflen(srb, orig_bufflen); 1536 } 1537 1538 static struct scsi_host_template isd200_host_template; 1539 1540 static int isd200_probe(struct usb_interface *intf, 1541 const struct usb_device_id *id) 1542 { 1543 struct us_data *us; 1544 int result; 1545 1546 result = usb_stor_probe1(&us, intf, id, 1547 (id - isd200_usb_ids) + isd200_unusual_dev_list, 1548 &isd200_host_template); 1549 if (result) 1550 return result; 1551 1552 us->protocol_name = "ISD200 ATA/ATAPI"; 1553 us->proto_handler = isd200_ata_command; 1554 1555 result = usb_stor_probe2(us); 1556 return result; 1557 } 1558 1559 static struct usb_driver isd200_driver = { 1560 .name = DRV_NAME, 1561 .probe = isd200_probe, 1562 .disconnect = usb_stor_disconnect, 1563 .suspend = usb_stor_suspend, 1564 .resume = usb_stor_resume, 1565 .reset_resume = usb_stor_reset_resume, 1566 .pre_reset = usb_stor_pre_reset, 1567 .post_reset = usb_stor_post_reset, 1568 .id_table = isd200_usb_ids, 1569 .soft_unbind = 1, 1570 .no_dynamic_id = 1, 1571 }; 1572 1573 module_usb_stor_driver(isd200_driver, isd200_host_template, DRV_NAME); 1574