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 MODULE_DESCRIPTION("Driver for In-System Design, Inc. ISD200 ASIC"); 64 MODULE_AUTHOR("Björn Stenberg <bjorn@haxx.se>"); 65 MODULE_LICENSE("GPL"); 66 67 static int isd200_Initialization(struct us_data *us); 68 69 70 /* 71 * The table of devices 72 */ 73 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ 74 vendorName, productName, useProtocol, useTransport, \ 75 initFunction, flags) \ 76 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ 77 .driver_info = (flags)|(USB_US_TYPE_STOR<<24) } 78 79 static struct usb_device_id isd200_usb_ids[] = { 80 # include "unusual_isd200.h" 81 { } /* Terminating entry */ 82 }; 83 MODULE_DEVICE_TABLE(usb, isd200_usb_ids); 84 85 #undef UNUSUAL_DEV 86 #undef USUAL_DEV 87 88 /* 89 * The flags table 90 */ 91 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ 92 vendor_name, product_name, use_protocol, use_transport, \ 93 init_function, Flags) \ 94 { \ 95 .vendorName = vendor_name, \ 96 .productName = product_name, \ 97 .useProtocol = use_protocol, \ 98 .useTransport = use_transport, \ 99 .initFunction = init_function, \ 100 } 101 102 static struct us_unusual_dev isd200_unusual_dev_list[] = { 103 # include "unusual_isd200.h" 104 { } /* Terminating entry */ 105 }; 106 107 #undef UNUSUAL_DEV 108 #undef USUAL_DEV 109 110 111 /* Timeout defines (in Seconds) */ 112 113 #define ISD200_ENUM_BSY_TIMEOUT 35 114 #define ISD200_ENUM_DETECT_TIMEOUT 30 115 #define ISD200_DEFAULT_TIMEOUT 30 116 117 /* device flags */ 118 #define DF_ATA_DEVICE 0x0001 119 #define DF_MEDIA_STATUS_ENABLED 0x0002 120 #define DF_REMOVABLE_MEDIA 0x0004 121 122 /* capability bit definitions */ 123 #define CAPABILITY_DMA 0x01 124 #define CAPABILITY_LBA 0x02 125 126 /* command_setX bit definitions */ 127 #define COMMANDSET_REMOVABLE 0x02 128 #define COMMANDSET_MEDIA_STATUS 0x10 129 130 /* ATA Vendor Specific defines */ 131 #define ATA_ADDRESS_DEVHEAD_STD 0xa0 132 #define ATA_ADDRESS_DEVHEAD_LBA_MODE 0x40 133 #define ATA_ADDRESS_DEVHEAD_SLAVE 0x10 134 135 /* Action Select bits */ 136 #define ACTION_SELECT_0 0x01 137 #define ACTION_SELECT_1 0x02 138 #define ACTION_SELECT_2 0x04 139 #define ACTION_SELECT_3 0x08 140 #define ACTION_SELECT_4 0x10 141 #define ACTION_SELECT_5 0x20 142 #define ACTION_SELECT_6 0x40 143 #define ACTION_SELECT_7 0x80 144 145 /* Register Select bits */ 146 #define REG_ALTERNATE_STATUS 0x01 147 #define REG_DEVICE_CONTROL 0x01 148 #define REG_ERROR 0x02 149 #define REG_FEATURES 0x02 150 #define REG_SECTOR_COUNT 0x04 151 #define REG_SECTOR_NUMBER 0x08 152 #define REG_CYLINDER_LOW 0x10 153 #define REG_CYLINDER_HIGH 0x20 154 #define REG_DEVICE_HEAD 0x40 155 #define REG_STATUS 0x80 156 #define REG_COMMAND 0x80 157 158 /* ATA registers offset definitions */ 159 #define ATA_REG_ERROR_OFFSET 1 160 #define ATA_REG_LCYL_OFFSET 4 161 #define ATA_REG_HCYL_OFFSET 5 162 #define ATA_REG_STATUS_OFFSET 7 163 164 /* ATA error definitions not in <linux/hdreg.h> */ 165 #define ATA_ERROR_MEDIA_CHANGE 0x20 166 167 /* ATA command definitions not in <linux/hdreg.h> */ 168 #define ATA_COMMAND_GET_MEDIA_STATUS 0xDA 169 #define ATA_COMMAND_MEDIA_EJECT 0xED 170 171 /* ATA drive control definitions */ 172 #define ATA_DC_DISABLE_INTERRUPTS 0x02 173 #define ATA_DC_RESET_CONTROLLER 0x04 174 #define ATA_DC_REENABLE_CONTROLLER 0x00 175 176 /* 177 * General purpose return codes 178 */ 179 180 #define ISD200_ERROR -1 181 #define ISD200_GOOD 0 182 183 /* 184 * Transport return codes 185 */ 186 187 #define ISD200_TRANSPORT_GOOD 0 /* Transport good, command good */ 188 #define ISD200_TRANSPORT_FAILED 1 /* Transport good, command failed */ 189 #define ISD200_TRANSPORT_ERROR 2 /* Transport bad (i.e. device dead) */ 190 191 /* driver action codes */ 192 #define ACTION_READ_STATUS 0 193 #define ACTION_RESET 1 194 #define ACTION_REENABLE 2 195 #define ACTION_SOFT_RESET 3 196 #define ACTION_ENUM 4 197 #define ACTION_IDENTIFY 5 198 199 200 /* 201 * ata_cdb struct 202 */ 203 204 205 union ata_cdb { 206 struct { 207 unsigned char SignatureByte0; 208 unsigned char SignatureByte1; 209 unsigned char ActionSelect; 210 unsigned char RegisterSelect; 211 unsigned char TransferBlockSize; 212 unsigned char WriteData3F6; 213 unsigned char WriteData1F1; 214 unsigned char WriteData1F2; 215 unsigned char WriteData1F3; 216 unsigned char WriteData1F4; 217 unsigned char WriteData1F5; 218 unsigned char WriteData1F6; 219 unsigned char WriteData1F7; 220 unsigned char Reserved[3]; 221 } generic; 222 223 struct { 224 unsigned char SignatureByte0; 225 unsigned char SignatureByte1; 226 unsigned char ActionSelect; 227 unsigned char RegisterSelect; 228 unsigned char TransferBlockSize; 229 unsigned char AlternateStatusByte; 230 unsigned char ErrorByte; 231 unsigned char SectorCountByte; 232 unsigned char SectorNumberByte; 233 unsigned char CylinderLowByte; 234 unsigned char CylinderHighByte; 235 unsigned char DeviceHeadByte; 236 unsigned char StatusByte; 237 unsigned char Reserved[3]; 238 } read; 239 240 struct { 241 unsigned char SignatureByte0; 242 unsigned char SignatureByte1; 243 unsigned char ActionSelect; 244 unsigned char RegisterSelect; 245 unsigned char TransferBlockSize; 246 unsigned char DeviceControlByte; 247 unsigned char FeaturesByte; 248 unsigned char SectorCountByte; 249 unsigned char SectorNumberByte; 250 unsigned char CylinderLowByte; 251 unsigned char CylinderHighByte; 252 unsigned char DeviceHeadByte; 253 unsigned char CommandByte; 254 unsigned char Reserved[3]; 255 } write; 256 }; 257 258 259 /* 260 * Inquiry data structure. This is the data returned from the target 261 * after it receives an inquiry. 262 * 263 * This structure may be extended by the number of bytes specified 264 * in the field AdditionalLength. The defined size constant only 265 * includes fields through ProductRevisionLevel. 266 */ 267 268 /* 269 * DeviceType field 270 */ 271 #define DIRECT_ACCESS_DEVICE 0x00 /* disks */ 272 #define DEVICE_REMOVABLE 0x80 273 274 struct inquiry_data { 275 unsigned char DeviceType; 276 unsigned char DeviceTypeModifier; 277 unsigned char Versions; 278 unsigned char Format; 279 unsigned char AdditionalLength; 280 unsigned char Reserved[2]; 281 unsigned char Capability; 282 unsigned char VendorId[8]; 283 unsigned char ProductId[16]; 284 unsigned char ProductRevisionLevel[4]; 285 unsigned char VendorSpecific[20]; 286 unsigned char Reserved3[40]; 287 } __attribute__ ((packed)); 288 289 /* 290 * INQUIRY data buffer size 291 */ 292 293 #define INQUIRYDATABUFFERSIZE 36 294 295 296 /* 297 * ISD200 CONFIG data struct 298 */ 299 300 #define ATACFG_TIMING 0x0f 301 #define ATACFG_ATAPI_RESET 0x10 302 #define ATACFG_MASTER 0x20 303 #define ATACFG_BLOCKSIZE 0xa0 304 305 #define ATACFGE_LAST_LUN 0x07 306 #define ATACFGE_DESC_OVERRIDE 0x08 307 #define ATACFGE_STATE_SUSPEND 0x10 308 #define ATACFGE_SKIP_BOOT 0x20 309 #define ATACFGE_CONF_DESC2 0x40 310 #define ATACFGE_INIT_STATUS 0x80 311 312 #define CFG_CAPABILITY_SRST 0x01 313 314 struct isd200_config { 315 unsigned char EventNotification; 316 unsigned char ExternalClock; 317 unsigned char ATAInitTimeout; 318 unsigned char ATAConfig; 319 unsigned char ATAMajorCommand; 320 unsigned char ATAMinorCommand; 321 unsigned char ATAExtraConfig; 322 unsigned char Capability; 323 }__attribute__ ((packed)); 324 325 326 /* 327 * ISD200 driver information struct 328 */ 329 330 struct isd200_info { 331 struct inquiry_data InquiryData; 332 u16 *id; 333 struct isd200_config ConfigData; 334 unsigned char *RegsBuf; 335 unsigned char ATARegs[8]; 336 unsigned char DeviceHead; 337 unsigned char DeviceFlags; 338 339 /* maximum number of LUNs supported */ 340 unsigned char MaxLUNs; 341 unsigned char cmnd[BLK_MAX_CDB]; 342 struct scsi_cmnd srb; 343 struct scatterlist sg; 344 }; 345 346 347 /* 348 * Read Capacity Data - returned in Big Endian format 349 */ 350 351 struct read_capacity_data { 352 __be32 LogicalBlockAddress; 353 __be32 BytesPerBlock; 354 }; 355 356 /* 357 * Read Block Limits Data - returned in Big Endian format 358 * This structure returns the maximum and minimum block 359 * size for a TAPE device. 360 */ 361 362 struct read_block_limits { 363 unsigned char Reserved; 364 unsigned char BlockMaximumSize[3]; 365 unsigned char BlockMinimumSize[2]; 366 }; 367 368 369 /* 370 * Sense Data Format 371 */ 372 373 #define SENSE_ERRCODE 0x7f 374 #define SENSE_ERRCODE_VALID 0x80 375 #define SENSE_FLAG_SENSE_KEY 0x0f 376 #define SENSE_FLAG_BAD_LENGTH 0x20 377 #define SENSE_FLAG_END_OF_MEDIA 0x40 378 #define SENSE_FLAG_FILE_MARK 0x80 379 struct sense_data { 380 unsigned char ErrorCode; 381 unsigned char SegmentNumber; 382 unsigned char Flags; 383 unsigned char Information[4]; 384 unsigned char AdditionalSenseLength; 385 unsigned char CommandSpecificInformation[4]; 386 unsigned char AdditionalSenseCode; 387 unsigned char AdditionalSenseCodeQualifier; 388 unsigned char FieldReplaceableUnitCode; 389 unsigned char SenseKeySpecific[3]; 390 } __attribute__ ((packed)); 391 392 /* 393 * Default request sense buffer size 394 */ 395 396 #define SENSE_BUFFER_SIZE 18 397 398 /*********************************************************************** 399 * Helper routines 400 ***********************************************************************/ 401 402 /************************************************************************** 403 * isd200_build_sense 404 * 405 * Builds an artificial sense buffer to report the results of a 406 * failed command. 407 * 408 * RETURNS: 409 * void 410 */ 411 static void isd200_build_sense(struct us_data *us, struct scsi_cmnd *srb) 412 { 413 struct isd200_info *info = (struct isd200_info *)us->extra; 414 struct sense_data *buf = (struct sense_data *) &srb->sense_buffer[0]; 415 unsigned char error = info->ATARegs[ATA_REG_ERROR_OFFSET]; 416 417 if(error & ATA_ERROR_MEDIA_CHANGE) { 418 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 419 buf->AdditionalSenseLength = 0xb; 420 buf->Flags = UNIT_ATTENTION; 421 buf->AdditionalSenseCode = 0; 422 buf->AdditionalSenseCodeQualifier = 0; 423 } else if (error & ATA_MCR) { 424 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 425 buf->AdditionalSenseLength = 0xb; 426 buf->Flags = UNIT_ATTENTION; 427 buf->AdditionalSenseCode = 0; 428 buf->AdditionalSenseCodeQualifier = 0; 429 } else if (error & ATA_TRK0NF) { 430 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 431 buf->AdditionalSenseLength = 0xb; 432 buf->Flags = NOT_READY; 433 buf->AdditionalSenseCode = 0; 434 buf->AdditionalSenseCodeQualifier = 0; 435 } else if (error & ATA_UNC) { 436 buf->ErrorCode = 0x70 | SENSE_ERRCODE_VALID; 437 buf->AdditionalSenseLength = 0xb; 438 buf->Flags = DATA_PROTECT; 439 buf->AdditionalSenseCode = 0; 440 buf->AdditionalSenseCodeQualifier = 0; 441 } else { 442 buf->ErrorCode = 0; 443 buf->AdditionalSenseLength = 0; 444 buf->Flags = 0; 445 buf->AdditionalSenseCode = 0; 446 buf->AdditionalSenseCodeQualifier = 0; 447 } 448 } 449 450 451 /*********************************************************************** 452 * Transport routines 453 ***********************************************************************/ 454 455 /************************************************************************** 456 * isd200_set_srb(), isd200_srb_set_bufflen() 457 * 458 * Two helpers to facilitate in initialization of scsi_cmnd structure 459 * Will need to change when struct scsi_cmnd changes 460 */ 461 static void isd200_set_srb(struct isd200_info *info, 462 enum dma_data_direction dir, void* buff, unsigned bufflen) 463 { 464 struct scsi_cmnd *srb = &info->srb; 465 466 if (buff) 467 sg_init_one(&info->sg, buff, bufflen); 468 469 srb->sc_data_direction = dir; 470 srb->sdb.table.sgl = buff ? &info->sg : NULL; 471 srb->sdb.length = bufflen; 472 srb->sdb.table.nents = buff ? 1 : 0; 473 } 474 475 static void isd200_srb_set_bufflen(struct scsi_cmnd *srb, unsigned bufflen) 476 { 477 srb->sdb.length = bufflen; 478 } 479 480 481 /************************************************************************** 482 * isd200_action 483 * 484 * Routine for sending commands to the isd200 485 * 486 * RETURNS: 487 * ISD status code 488 */ 489 static int isd200_action( struct us_data *us, int action, 490 void* pointer, int value ) 491 { 492 union ata_cdb ata; 493 /* static to prevent this large struct being placed on the valuable stack */ 494 static struct scsi_device srb_dev; 495 struct isd200_info *info = (struct isd200_info *)us->extra; 496 struct scsi_cmnd *srb = &info->srb; 497 int status; 498 499 memset(&ata, 0, sizeof(ata)); 500 srb->cmnd = info->cmnd; 501 srb->device = &srb_dev; 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 = ATA_CMD_DEV_RESET; 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 = ATA_CMD_ID_ATA; 558 isd200_set_srb(info, DMA_FROM_DEVICE, info->id, 559 ATA_ID_WORDS * 2); 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] & ATA_BUSY) { 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 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 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] & ATA_DRDY) { 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(u16 *id) 1057 { 1058 #ifndef __LITTLE_ENDIAN 1059 # ifdef __BIG_ENDIAN 1060 int i; 1061 1062 for (i = 0; i < ATA_ID_WORDS; i++) 1063 id[i] = __le16_to_cpu(id[i]); 1064 # else 1065 # error "Please fix <asm/byteorder.h>" 1066 # endif 1067 #endif 1068 } 1069 1070 static void isd200_dump_driveid(u16 *id) 1071 { 1072 US_DEBUGP(" Identify Data Structure:\n"); 1073 US_DEBUGP(" config = 0x%x\n", id[ATA_ID_CONFIG]); 1074 US_DEBUGP(" cyls = 0x%x\n", id[ATA_ID_CYLS]); 1075 US_DEBUGP(" heads = 0x%x\n", id[ATA_ID_HEADS]); 1076 US_DEBUGP(" track_bytes = 0x%x\n", id[4]); 1077 US_DEBUGP(" sector_bytes = 0x%x\n", id[5]); 1078 US_DEBUGP(" sectors = 0x%x\n", id[ATA_ID_SECTORS]); 1079 US_DEBUGP(" serial_no[0] = 0x%x\n", *(char *)&id[ATA_ID_SERNO]); 1080 US_DEBUGP(" buf_type = 0x%x\n", id[20]); 1081 US_DEBUGP(" buf_size = 0x%x\n", id[ATA_ID_BUF_SIZE]); 1082 US_DEBUGP(" ecc_bytes = 0x%x\n", id[22]); 1083 US_DEBUGP(" fw_rev[0] = 0x%x\n", *(char *)&id[ATA_ID_FW_REV]); 1084 US_DEBUGP(" model[0] = 0x%x\n", *(char *)&id[ATA_ID_PROD]); 1085 US_DEBUGP(" max_multsect = 0x%x\n", id[ATA_ID_MAX_MULTSECT] & 0xff); 1086 US_DEBUGP(" dword_io = 0x%x\n", id[ATA_ID_DWORD_IO]); 1087 US_DEBUGP(" capability = 0x%x\n", id[ATA_ID_CAPABILITY] >> 8); 1088 US_DEBUGP(" tPIO = 0x%x\n", id[ATA_ID_OLD_PIO_MODES] >> 8); 1089 US_DEBUGP(" tDMA = 0x%x\n", id[ATA_ID_OLD_DMA_MODES] >> 8); 1090 US_DEBUGP(" field_valid = 0x%x\n", id[ATA_ID_FIELD_VALID]); 1091 US_DEBUGP(" cur_cyls = 0x%x\n", id[ATA_ID_CUR_CYLS]); 1092 US_DEBUGP(" cur_heads = 0x%x\n", id[ATA_ID_CUR_HEADS]); 1093 US_DEBUGP(" cur_sectors = 0x%x\n", id[ATA_ID_CUR_SECTORS]); 1094 US_DEBUGP(" cur_capacity = 0x%x\n", ata_id_u32(id, 57)); 1095 US_DEBUGP(" multsect = 0x%x\n", id[ATA_ID_MULTSECT] & 0xff); 1096 US_DEBUGP(" lba_capacity = 0x%x\n", ata_id_u32(id, ATA_ID_LBA_CAPACITY)); 1097 US_DEBUGP(" command_set_1 = 0x%x\n", id[ATA_ID_COMMAND_SET_1]); 1098 US_DEBUGP(" command_set_2 = 0x%x\n", id[ATA_ID_COMMAND_SET_2]); 1099 } 1100 1101 /************************************************************************** 1102 * isd200_get_inquiry_data 1103 * 1104 * Get inquiry data 1105 * 1106 * RETURNS: 1107 * ISD status code 1108 */ 1109 static int isd200_get_inquiry_data( struct us_data *us ) 1110 { 1111 struct isd200_info *info = (struct isd200_info *)us->extra; 1112 int retStatus = ISD200_GOOD; 1113 u16 *id = info->id; 1114 1115 US_DEBUGP("Entering isd200_get_inquiry_data\n"); 1116 1117 /* set default to Master */ 1118 info->DeviceHead = ATA_ADDRESS_DEVHEAD_STD; 1119 1120 /* attempt to manually enumerate this device */ 1121 retStatus = isd200_manual_enum(us); 1122 if (retStatus == ISD200_GOOD) { 1123 int transferStatus; 1124 1125 /* check for an ATA device */ 1126 if (info->DeviceFlags & DF_ATA_DEVICE) { 1127 /* this must be an ATA device */ 1128 /* perform an ATA Command Identify */ 1129 transferStatus = isd200_action( us, ACTION_IDENTIFY, 1130 id, ATA_ID_WORDS * 2); 1131 if (transferStatus != ISD200_TRANSPORT_GOOD) { 1132 /* Error issuing ATA Command Identify */ 1133 US_DEBUGP(" Error issuing ATA Command Identify\n"); 1134 retStatus = ISD200_ERROR; 1135 } else { 1136 /* ATA Command Identify successful */ 1137 int i; 1138 __be16 *src; 1139 __u16 *dest; 1140 1141 isd200_fix_driveid(id); 1142 isd200_dump_driveid(id); 1143 1144 memset(&info->InquiryData, 0, sizeof(info->InquiryData)); 1145 1146 /* Standard IDE interface only supports disks */ 1147 info->InquiryData.DeviceType = DIRECT_ACCESS_DEVICE; 1148 1149 /* The length must be at least 36 (5 + 31) */ 1150 info->InquiryData.AdditionalLength = 0x1F; 1151 1152 if (id[ATA_ID_COMMAND_SET_1] & COMMANDSET_MEDIA_STATUS) { 1153 /* set the removable bit */ 1154 info->InquiryData.DeviceTypeModifier = DEVICE_REMOVABLE; 1155 info->DeviceFlags |= DF_REMOVABLE_MEDIA; 1156 } 1157 1158 /* Fill in vendor identification fields */ 1159 src = (__be16 *)&id[ATA_ID_PROD]; 1160 dest = (__u16*)info->InquiryData.VendorId; 1161 for (i=0;i<4;i++) 1162 dest[i] = be16_to_cpu(src[i]); 1163 1164 src = (__be16 *)&id[ATA_ID_PROD + 8/2]; 1165 dest = (__u16*)info->InquiryData.ProductId; 1166 for (i=0;i<8;i++) 1167 dest[i] = be16_to_cpu(src[i]); 1168 1169 src = (__be16 *)&id[ATA_ID_FW_REV]; 1170 dest = (__u16*)info->InquiryData.ProductRevisionLevel; 1171 for (i=0;i<2;i++) 1172 dest[i] = be16_to_cpu(src[i]); 1173 1174 /* determine if it supports Media Status Notification */ 1175 if (id[ATA_ID_COMMAND_SET_2] & COMMANDSET_MEDIA_STATUS) { 1176 US_DEBUGP(" Device supports Media Status Notification\n"); 1177 1178 /* Indicate that it is enabled, even though it is not 1179 * This allows the lock/unlock of the media to work 1180 * correctly. 1181 */ 1182 info->DeviceFlags |= DF_MEDIA_STATUS_ENABLED; 1183 } 1184 else 1185 info->DeviceFlags &= ~DF_MEDIA_STATUS_ENABLED; 1186 1187 } 1188 } else { 1189 /* 1190 * this must be an ATAPI device 1191 * use an ATAPI protocol (Transparent SCSI) 1192 */ 1193 us->protocol_name = "Transparent SCSI"; 1194 us->proto_handler = usb_stor_transparent_scsi_command; 1195 1196 US_DEBUGP("Protocol changed to: %s\n", us->protocol_name); 1197 1198 /* Free driver structure */ 1199 us->extra_destructor(info); 1200 kfree(info); 1201 us->extra = NULL; 1202 us->extra_destructor = NULL; 1203 } 1204 } 1205 1206 US_DEBUGP("Leaving isd200_get_inquiry_data %08X\n", retStatus); 1207 1208 return(retStatus); 1209 } 1210 1211 /************************************************************************** 1212 * isd200_scsi_to_ata 1213 * 1214 * Translate SCSI commands to ATA commands. 1215 * 1216 * RETURNS: 1217 * 1 if the command needs to be sent to the transport layer 1218 * 0 otherwise 1219 */ 1220 static int isd200_scsi_to_ata(struct scsi_cmnd *srb, struct us_data *us, 1221 union ata_cdb * ataCdb) 1222 { 1223 struct isd200_info *info = (struct isd200_info *)us->extra; 1224 u16 *id = info->id; 1225 int sendToTransport = 1; 1226 unsigned char sectnum, head; 1227 unsigned short cylinder; 1228 unsigned long lba; 1229 unsigned long blockCount; 1230 unsigned char senseData[8] = { 0, 0, 0, 0, 0, 0, 0, 0 }; 1231 1232 memset(ataCdb, 0, sizeof(union ata_cdb)); 1233 1234 /* SCSI Command */ 1235 switch (srb->cmnd[0]) { 1236 case INQUIRY: 1237 US_DEBUGP(" ATA OUT - INQUIRY\n"); 1238 1239 /* copy InquiryData */ 1240 usb_stor_set_xfer_buf((unsigned char *) &info->InquiryData, 1241 sizeof(info->InquiryData), srb); 1242 srb->result = SAM_STAT_GOOD; 1243 sendToTransport = 0; 1244 break; 1245 1246 case MODE_SENSE: 1247 US_DEBUGP(" ATA OUT - SCSIOP_MODE_SENSE\n"); 1248 1249 /* Initialize the return buffer */ 1250 usb_stor_set_xfer_buf(senseData, sizeof(senseData), srb); 1251 1252 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1253 { 1254 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1255 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1256 ataCdb->generic.TransferBlockSize = 1; 1257 ataCdb->generic.RegisterSelect = REG_COMMAND; 1258 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1259 isd200_srb_set_bufflen(srb, 0); 1260 } else { 1261 US_DEBUGP(" Media Status not supported, just report okay\n"); 1262 srb->result = SAM_STAT_GOOD; 1263 sendToTransport = 0; 1264 } 1265 break; 1266 1267 case TEST_UNIT_READY: 1268 US_DEBUGP(" ATA OUT - SCSIOP_TEST_UNIT_READY\n"); 1269 1270 if (info->DeviceFlags & DF_MEDIA_STATUS_ENABLED) 1271 { 1272 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1273 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1274 ataCdb->generic.TransferBlockSize = 1; 1275 ataCdb->generic.RegisterSelect = REG_COMMAND; 1276 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1277 isd200_srb_set_bufflen(srb, 0); 1278 } else { 1279 US_DEBUGP(" Media Status not supported, just report okay\n"); 1280 srb->result = SAM_STAT_GOOD; 1281 sendToTransport = 0; 1282 } 1283 break; 1284 1285 case READ_CAPACITY: 1286 { 1287 unsigned long capacity; 1288 struct read_capacity_data readCapacityData; 1289 1290 US_DEBUGP(" ATA OUT - SCSIOP_READ_CAPACITY\n"); 1291 1292 if (ata_id_has_lba(id)) 1293 capacity = ata_id_u32(id, ATA_ID_LBA_CAPACITY) - 1; 1294 else 1295 capacity = (id[ATA_ID_HEADS] * id[ATA_ID_CYLS] * 1296 id[ATA_ID_SECTORS]) - 1; 1297 1298 readCapacityData.LogicalBlockAddress = cpu_to_be32(capacity); 1299 readCapacityData.BytesPerBlock = cpu_to_be32(0x200); 1300 1301 usb_stor_set_xfer_buf((unsigned char *) &readCapacityData, 1302 sizeof(readCapacityData), srb); 1303 srb->result = SAM_STAT_GOOD; 1304 sendToTransport = 0; 1305 } 1306 break; 1307 1308 case READ_10: 1309 US_DEBUGP(" ATA OUT - SCSIOP_READ\n"); 1310 1311 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1312 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1313 1314 if (ata_id_has_lba(id)) { 1315 sectnum = (unsigned char)(lba); 1316 cylinder = (unsigned short)(lba>>8); 1317 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1318 } else { 1319 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1320 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1321 id[ATA_ID_HEADS])); 1322 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1323 id[ATA_ID_HEADS]); 1324 } 1325 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1326 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1327 ataCdb->generic.TransferBlockSize = 1; 1328 ataCdb->generic.RegisterSelect = 1329 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1330 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1331 REG_DEVICE_HEAD | REG_COMMAND; 1332 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1333 ataCdb->write.SectorNumberByte = sectnum; 1334 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1335 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1336 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1337 ataCdb->write.CommandByte = ATA_CMD_PIO_READ; 1338 break; 1339 1340 case WRITE_10: 1341 US_DEBUGP(" ATA OUT - SCSIOP_WRITE\n"); 1342 1343 lba = be32_to_cpu(*(__be32 *)&srb->cmnd[2]); 1344 blockCount = (unsigned long)srb->cmnd[7]<<8 | (unsigned long)srb->cmnd[8]; 1345 1346 if (ata_id_has_lba(id)) { 1347 sectnum = (unsigned char)(lba); 1348 cylinder = (unsigned short)(lba>>8); 1349 head = ATA_ADDRESS_DEVHEAD_LBA_MODE | (unsigned char)(lba>>24 & 0x0F); 1350 } else { 1351 sectnum = (u8)((lba % id[ATA_ID_SECTORS]) + 1); 1352 cylinder = (u16)(lba / (id[ATA_ID_SECTORS] * 1353 id[ATA_ID_HEADS])); 1354 head = (u8)((lba / id[ATA_ID_SECTORS]) % 1355 id[ATA_ID_HEADS]); 1356 } 1357 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1358 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1359 ataCdb->generic.TransferBlockSize = 1; 1360 ataCdb->generic.RegisterSelect = 1361 REG_SECTOR_COUNT | REG_SECTOR_NUMBER | 1362 REG_CYLINDER_LOW | REG_CYLINDER_HIGH | 1363 REG_DEVICE_HEAD | REG_COMMAND; 1364 ataCdb->write.SectorCountByte = (unsigned char)blockCount; 1365 ataCdb->write.SectorNumberByte = sectnum; 1366 ataCdb->write.CylinderHighByte = (unsigned char)(cylinder>>8); 1367 ataCdb->write.CylinderLowByte = (unsigned char)cylinder; 1368 ataCdb->write.DeviceHeadByte = (head | ATA_ADDRESS_DEVHEAD_STD); 1369 ataCdb->write.CommandByte = ATA_CMD_PIO_WRITE; 1370 break; 1371 1372 case ALLOW_MEDIUM_REMOVAL: 1373 US_DEBUGP(" ATA OUT - SCSIOP_MEDIUM_REMOVAL\n"); 1374 1375 if (info->DeviceFlags & DF_REMOVABLE_MEDIA) { 1376 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1377 1378 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1379 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1380 ataCdb->generic.TransferBlockSize = 1; 1381 ataCdb->generic.RegisterSelect = REG_COMMAND; 1382 ataCdb->write.CommandByte = (srb->cmnd[4] & 0x1) ? 1383 ATA_CMD_MEDIA_LOCK : ATA_CMD_MEDIA_UNLOCK; 1384 isd200_srb_set_bufflen(srb, 0); 1385 } else { 1386 US_DEBUGP(" Not removeable media, just report okay\n"); 1387 srb->result = SAM_STAT_GOOD; 1388 sendToTransport = 0; 1389 } 1390 break; 1391 1392 case START_STOP: 1393 US_DEBUGP(" ATA OUT - SCSIOP_START_STOP_UNIT\n"); 1394 US_DEBUGP(" srb->cmnd[4] = 0x%X\n", srb->cmnd[4]); 1395 1396 if ((srb->cmnd[4] & 0x3) == 0x2) { 1397 US_DEBUGP(" Media Eject\n"); 1398 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1399 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1400 ataCdb->generic.TransferBlockSize = 0; 1401 ataCdb->generic.RegisterSelect = REG_COMMAND; 1402 ataCdb->write.CommandByte = ATA_COMMAND_MEDIA_EJECT; 1403 } else if ((srb->cmnd[4] & 0x3) == 0x1) { 1404 US_DEBUGP(" Get Media Status\n"); 1405 ataCdb->generic.SignatureByte0 = info->ConfigData.ATAMajorCommand; 1406 ataCdb->generic.SignatureByte1 = info->ConfigData.ATAMinorCommand; 1407 ataCdb->generic.TransferBlockSize = 1; 1408 ataCdb->generic.RegisterSelect = REG_COMMAND; 1409 ataCdb->write.CommandByte = ATA_COMMAND_GET_MEDIA_STATUS; 1410 isd200_srb_set_bufflen(srb, 0); 1411 } else { 1412 US_DEBUGP(" Nothing to do, just report okay\n"); 1413 srb->result = SAM_STAT_GOOD; 1414 sendToTransport = 0; 1415 } 1416 break; 1417 1418 default: 1419 US_DEBUGP("Unsupported SCSI command - 0x%X\n", srb->cmnd[0]); 1420 srb->result = DID_ERROR << 16; 1421 sendToTransport = 0; 1422 break; 1423 } 1424 1425 return(sendToTransport); 1426 } 1427 1428 1429 /************************************************************************** 1430 * isd200_free_info 1431 * 1432 * Frees the driver structure. 1433 */ 1434 static void isd200_free_info_ptrs(void *info_) 1435 { 1436 struct isd200_info *info = (struct isd200_info *) info_; 1437 1438 if (info) { 1439 kfree(info->id); 1440 kfree(info->RegsBuf); 1441 kfree(info->srb.sense_buffer); 1442 } 1443 } 1444 1445 /************************************************************************** 1446 * isd200_init_info 1447 * 1448 * Allocates (if necessary) and initializes the driver structure. 1449 * 1450 * RETURNS: 1451 * ISD status code 1452 */ 1453 static int isd200_init_info(struct us_data *us) 1454 { 1455 int retStatus = ISD200_GOOD; 1456 struct isd200_info *info; 1457 1458 info = kzalloc(sizeof(struct isd200_info), GFP_KERNEL); 1459 if (!info) 1460 retStatus = ISD200_ERROR; 1461 else { 1462 info->id = kzalloc(ATA_ID_WORDS * 2, GFP_KERNEL); 1463 info->RegsBuf = (unsigned char *) 1464 kmalloc(sizeof(info->ATARegs), GFP_KERNEL); 1465 info->srb.sense_buffer = 1466 kmalloc(SCSI_SENSE_BUFFERSIZE, GFP_KERNEL); 1467 if (!info->id || !info->RegsBuf || !info->srb.sense_buffer) { 1468 isd200_free_info_ptrs(info); 1469 kfree(info); 1470 retStatus = ISD200_ERROR; 1471 } 1472 } 1473 1474 if (retStatus == ISD200_GOOD) { 1475 us->extra = info; 1476 us->extra_destructor = isd200_free_info_ptrs; 1477 } else 1478 US_DEBUGP("ERROR - kmalloc failure\n"); 1479 1480 return retStatus; 1481 } 1482 1483 /************************************************************************** 1484 * Initialization for the ISD200 1485 */ 1486 1487 static int isd200_Initialization(struct us_data *us) 1488 { 1489 US_DEBUGP("ISD200 Initialization...\n"); 1490 1491 /* Initialize ISD200 info struct */ 1492 1493 if (isd200_init_info(us) == ISD200_ERROR) { 1494 US_DEBUGP("ERROR Initializing ISD200 Info struct\n"); 1495 } else { 1496 /* Get device specific data */ 1497 1498 if (isd200_get_inquiry_data(us) != ISD200_GOOD) 1499 US_DEBUGP("ISD200 Initialization Failure\n"); 1500 else 1501 US_DEBUGP("ISD200 Initialization complete\n"); 1502 } 1503 1504 return 0; 1505 } 1506 1507 1508 /************************************************************************** 1509 * Protocol and Transport for the ISD200 ASIC 1510 * 1511 * This protocol and transport are for ATA devices connected to an ISD200 1512 * ASIC. An ATAPI device that is connected as a slave device will be 1513 * detected in the driver initialization function and the protocol will 1514 * be changed to an ATAPI protocol (Transparent SCSI). 1515 * 1516 */ 1517 1518 static void isd200_ata_command(struct scsi_cmnd *srb, struct us_data *us) 1519 { 1520 int sendToTransport = 1, orig_bufflen; 1521 union ata_cdb ataCdb; 1522 1523 /* Make sure driver was initialized */ 1524 1525 if (us->extra == NULL) 1526 US_DEBUGP("ERROR Driver not initialized\n"); 1527 1528 scsi_set_resid(srb, 0); 1529 /* scsi_bufflen might change in protocol translation to ata */ 1530 orig_bufflen = scsi_bufflen(srb); 1531 sendToTransport = isd200_scsi_to_ata(srb, us, &ataCdb); 1532 1533 /* send the command to the transport layer */ 1534 if (sendToTransport) 1535 isd200_invoke_transport(us, srb, &ataCdb); 1536 1537 isd200_srb_set_bufflen(srb, orig_bufflen); 1538 } 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 if (result) 1549 return result; 1550 1551 us->protocol_name = "ISD200 ATA/ATAPI"; 1552 us->proto_handler = isd200_ata_command; 1553 1554 result = usb_stor_probe2(us); 1555 return result; 1556 } 1557 1558 static struct usb_driver isd200_driver = { 1559 .name = "ums-isd200", 1560 .probe = isd200_probe, 1561 .disconnect = usb_stor_disconnect, 1562 .suspend = usb_stor_suspend, 1563 .resume = usb_stor_resume, 1564 .reset_resume = usb_stor_reset_resume, 1565 .pre_reset = usb_stor_pre_reset, 1566 .post_reset = usb_stor_post_reset, 1567 .id_table = isd200_usb_ids, 1568 .soft_unbind = 1, 1569 }; 1570 1571 module_usb_driver(isd200_driver); 1572