drivers/usb/storage/shuttle_usbat.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable
   4  *
   5  * Current development and maintenance by:
   6  *   (c) 2000, 2001 Robert Baruch (autophile@starband.net)
   7  *   (c) 2004, 2005 Daniel Drake <dsd@gentoo.org>
   8  *
   9  * Developed with the assistance of:
  10  *   (c) 2002 Alan Stern <stern@rowland.org>
  11  *
  12  * Flash support based on earlier work by:
  13  *   (c) 2002 Thomas Kreiling <usbdev@sm04.de>
  14  *
  15  * Many originally ATAPI devices were slightly modified to meet the USB
  16  * market by using some kind of translation from ATAPI to USB on the host,
  17  * and the peripheral would translate from USB back to ATAPI.
  18  *
  19  * SCM Microsystems (www.scmmicro.com) makes a device, sold to OEM's only,
  20  * which does the USB-to-ATAPI conversion.  By obtaining the data sheet on
  21  * their device under nondisclosure agreement, I have been able to write
  22  * this driver for Linux.
  23  *
  24  * The chip used in the device can also be used for EPP and ISA translation
  25  * as well. This driver is only guaranteed to work with the ATAPI
  26  * translation.
  27  *
  28  * See the Kconfig help text for a list of devices known to be supported by
  29  * this driver.
  30  */
  31
  32 #include <linux/errno.h>
  33 #include <linux/module.h>
  34 #include <linux/slab.h>
  35 #include <linux/cdrom.h>
  36
  37 #include <scsi/scsi.h>
  38 #include <scsi/scsi_cmnd.h>
  39
  40 #include "usb.h"
  41 #include "transport.h"
  42 #include "protocol.h"
  43 #include "debug.h"
  44 #include "scsiglue.h"
  45
  46 #define DRV_NAME "ums-usbat"
  47
  48 MODULE_DESCRIPTION("Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable");
  49 MODULE_AUTHOR("Daniel Drake <dsd@gentoo.org>, Robert Baruch <autophile@starband.net>");
  50 MODULE_LICENSE("GPL");
  51 MODULE_IMPORT_NS(USB_STORAGE);
  52
  53 /* Supported device types */
  54 #define USBAT_DEV_HP8200        0x01
  55 #define USBAT_DEV_FLASH         0x02
  56
  57 #define USBAT_EPP_PORT          0x10
  58 #define USBAT_EPP_REGISTER      0x30
  59 #define USBAT_ATA               0x40
  60 #define USBAT_ISA               0x50
  61
  62 /* Commands (need to be logically OR'd with an access type */
  63 #define USBAT_CMD_READ_REG              0x00
  64 #define USBAT_CMD_WRITE_REG             0x01
  65 #define USBAT_CMD_READ_BLOCK    0x02
  66 #define USBAT_CMD_WRITE_BLOCK   0x03
  67 #define USBAT_CMD_COND_READ_BLOCK       0x04
  68 #define USBAT_CMD_COND_WRITE_BLOCK      0x05
  69 #define USBAT_CMD_WRITE_REGS    0x07
  70
  71 /* Commands (these don't need an access type) */
  72 #define USBAT_CMD_EXEC_CMD      0x80
  73 #define USBAT_CMD_SET_FEAT      0x81
  74 #define USBAT_CMD_UIO           0x82
  75
  76 /* Methods of accessing UIO register */
  77 #define USBAT_UIO_READ  1
  78 #define USBAT_UIO_WRITE 0
  79
  80 /* Qualifier bits */
  81 #define USBAT_QUAL_FCQ  0x20    /* full compare */
  82 #define USBAT_QUAL_ALQ  0x10    /* auto load subcount */
  83
  84 /* USBAT Flash Media status types */
  85 #define USBAT_FLASH_MEDIA_NONE  0
  86 #define USBAT_FLASH_MEDIA_CF    1
  87
  88 /* USBAT Flash Media change types */
  89 #define USBAT_FLASH_MEDIA_SAME  0
  90 #define USBAT_FLASH_MEDIA_CHANGED       1
  91
  92 /* USBAT ATA registers */
  93 #define USBAT_ATA_DATA      0x10  /* read/write data (R/W) */
  94 #define USBAT_ATA_FEATURES  0x11  /* set features (W) */
  95 #define USBAT_ATA_ERROR     0x11  /* error (R) */
  96 #define USBAT_ATA_SECCNT    0x12  /* sector count (R/W) */
  97 #define USBAT_ATA_SECNUM    0x13  /* sector number (R/W) */
  98 #define USBAT_ATA_LBA_ME    0x14  /* cylinder low (R/W) */
  99 #define USBAT_ATA_LBA_HI    0x15  /* cylinder high (R/W) */
 100 #define USBAT_ATA_DEVICE    0x16  /* head/device selection (R/W) */
 101 #define USBAT_ATA_STATUS    0x17  /* device status (R) */
 102 #define USBAT_ATA_CMD       0x17  /* device command (W) */
 103 #define USBAT_ATA_ALTSTATUS 0x0E  /* status (no clear IRQ) (R) */
 104
 105 /* USBAT User I/O Data registers */
 106 #define USBAT_UIO_EPAD          0x80 /* Enable Peripheral Control Signals */
 107 #define USBAT_UIO_CDT           0x40 /* Card Detect (Read Only) */
 108                                      /* CDT = ACKD & !UI1 & !UI0 */
 109 #define USBAT_UIO_1             0x20 /* I/O 1 */
 110 #define USBAT_UIO_0             0x10 /* I/O 0 */
 111 #define USBAT_UIO_EPP_ATA       0x08 /* 1=EPP mode, 0=ATA mode */
 112 #define USBAT_UIO_UI1           0x04 /* Input 1 */
 113 #define USBAT_UIO_UI0           0x02 /* Input 0 */
 114 #define USBAT_UIO_INTR_ACK      0x01 /* Interrupt (ATA/ISA)/Acknowledge (EPP) */
 115
 116 /* USBAT User I/O Enable registers */
 117 #define USBAT_UIO_DRVRST        0x80 /* Reset Peripheral */
 118 #define USBAT_UIO_ACKD          0x40 /* Enable Card Detect */
 119 #define USBAT_UIO_OE1           0x20 /* I/O 1 set=output/clr=input */
 120                                      /* If ACKD=1, set OE1 to 1 also. */
 121 #define USBAT_UIO_OE0           0x10 /* I/O 0 set=output/clr=input */
 122 #define USBAT_UIO_ADPRST        0x01 /* Reset SCM chip */
 123
 124 /* USBAT Features */
 125 #define USBAT_FEAT_ETEN 0x80    /* External trigger enable */
 126 #define USBAT_FEAT_U1   0x08
 127 #define USBAT_FEAT_U0   0x04
 128 #define USBAT_FEAT_ET1  0x02
 129 #define USBAT_FEAT_ET2  0x01
 130
 131 struct usbat_info {
 132         int devicetype;
 133
 134         /* Used for Flash readers only */
 135         unsigned long sectors;     /* total sector count */
 136         unsigned long ssize;       /* sector size in bytes */
 137
 138         unsigned char sense_key;
 139         unsigned long sense_asc;   /* additional sense code */
 140         unsigned long sense_ascq;  /* additional sense code qualifier */
 141 };
 142
 143 #define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) )
 144 #define LSB_of(s) ((s)&0xFF)
 145 #define MSB_of(s) ((s)>>8)
 146
 147 static int transferred = 0;
 148
 149 static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us);
 150 static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us);
 151
 152 static int init_usbat_cd(struct us_data *us);
 153 static int init_usbat_flash(struct us_data *us);
 154
 155
 156 /*
 157  * The table of devices
 158  */
 159 #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \
 160                     vendorName, productName, useProtocol, useTransport, \
 161                     initFunction, flags) \
 162 { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \
 163   .driver_info = (flags) }
 164
 165 static struct usb_device_id usbat_usb_ids[] = {
 166 #       include "unusual_usbat.h"
 167         { }             /* Terminating entry */
 168 };
 169 MODULE_DEVICE_TABLE(usb, usbat_usb_ids);
 170
 171 #undef UNUSUAL_DEV
 172
 173 /*
 174  * The flags table
 175  */
 176 #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \
 177                     vendor_name, product_name, use_protocol, use_transport, \
 178                     init_function, Flags) \
 179 { \
 180         .vendorName = vendor_name,      \
 181         .productName = product_name,    \
 182         .useProtocol = use_protocol,    \
 183         .useTransport = use_transport,  \
 184         .initFunction = init_function,  \
 185 }
 186
 187 static struct us_unusual_dev usbat_unusual_dev_list[] = {
 188 #       include "unusual_usbat.h"
 189         { }             /* Terminating entry */
 190 };
 191
 192 #undef UNUSUAL_DEV
 193
 194 /*
 195  * Convenience function to produce an ATA read/write sectors command
 196  * Use cmd=0x20 for read, cmd=0x30 for write
 197  */
 198 static void usbat_pack_ata_sector_cmd(unsigned char *buf,
 199                                         unsigned char thistime,
 200                                         u32 sector, unsigned char cmd)
 201 {
 202         buf[0] = 0;
 203         buf[1] = thistime;
 204         buf[2] = sector & 0xFF;
 205         buf[3] = (sector >>  8) & 0xFF;
 206         buf[4] = (sector >> 16) & 0xFF;
 207         buf[5] = 0xE0 | ((sector >> 24) & 0x0F);
 208         buf[6] = cmd;
 209 }
 210
 211 /*
 212  * Convenience function to get the device type (flash or hp8200)
 213  */
 214 static int usbat_get_device_type(struct us_data *us)
 215 {
 216         return ((struct usbat_info*)us->extra)->devicetype;
 217 }
 218
 219 /*
 220  * Read a register from the device
 221  */
 222 static int usbat_read(struct us_data *us,
 223                       unsigned char access,
 224                       unsigned char reg,
 225                       unsigned char *content)
 226 {
 227         return usb_stor_ctrl_transfer(us,
 228                 us->recv_ctrl_pipe,
 229                 access | USBAT_CMD_READ_REG,
 230                 0xC0,
 231                 (u16)reg,
 232                 0,
 233                 content,
 234                 1);
 235 }
 236
 237 /*
 238  * Write to a register on the device
 239  */
 240 static int usbat_write(struct us_data *us,
 241                        unsigned char access,
 242                        unsigned char reg,
 243                        unsigned char content)
 244 {
 245         return usb_stor_ctrl_transfer(us,
 246                 us->send_ctrl_pipe,
 247                 access | USBAT_CMD_WRITE_REG,
 248                 0x40,
 249                 short_pack(reg, content),
 250                 0,
 251                 NULL,
 252                 0);
 253 }
 254
 255 /*
 256  * Convenience function to perform a bulk read
 257  */
 258 static int usbat_bulk_read(struct us_data *us,
 259                            void* buf,
 260                            unsigned int len,
 261                            int use_sg)
 262 {
 263         if (len == 0)
 264                 return USB_STOR_XFER_GOOD;
 265
 266         usb_stor_dbg(us, "len = %d\n", len);
 267         return usb_stor_bulk_transfer_sg(us, us->recv_bulk_pipe, buf, len, use_sg, NULL);
 268 }
 269
 270 /*
 271  * Convenience function to perform a bulk write
 272  */
 273 static int usbat_bulk_write(struct us_data *us,
 274                             void* buf,
 275                             unsigned int len,
 276                             int use_sg)
 277 {
 278         if (len == 0)
 279                 return USB_STOR_XFER_GOOD;
 280
 281         usb_stor_dbg(us, "len = %d\n", len);
 282         return usb_stor_bulk_transfer_sg(us, us->send_bulk_pipe, buf, len, use_sg, NULL);
 283 }
 284
 285 /*
 286  * Some USBAT-specific commands can only be executed over a command transport
 287  * This transport allows one (len=8) or two (len=16) vendor-specific commands
 288  * to be executed.
 289  */
 290 static int usbat_execute_command(struct us_data *us,
 291                                                                  unsigned char *commands,
 292                                                                  unsigned int len)
 293 {
 294         return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe,
 295                                                                   USBAT_CMD_EXEC_CMD, 0x40, 0, 0,
 296                                                                   commands, len);
 297 }
 298
 299 /*
 300  * Read the status register
 301  */
 302 static int usbat_get_status(struct us_data *us, unsigned char *status)
 303 {
 304         int rc;
 305         rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status);
 306
 307         usb_stor_dbg(us, "0x%02X\n", *status);
 308         return rc;
 309 }
 310
 311 /*
 312  * Check the device status
 313  */
 314 static int usbat_check_status(struct us_data *us)
 315 {
 316         unsigned char *reply = us->iobuf;
 317         int rc;
 318
 319         rc = usbat_get_status(us, reply);
 320         if (rc != USB_STOR_XFER_GOOD)
 321                 return USB_STOR_TRANSPORT_FAILED;
 322
 323         /* error/check condition (0x51 is ok) */
 324         if (*reply & 0x01 && *reply != 0x51)
 325                 return USB_STOR_TRANSPORT_FAILED;
 326
 327         /* device fault */
 328         if (*reply & 0x20)
 329                 return USB_STOR_TRANSPORT_FAILED;
 330
 331         return USB_STOR_TRANSPORT_GOOD;
 332 }
 333
 334 /*
 335  * Stores critical information in internal registers in preparation for the execution
 336  * of a conditional usbat_read_blocks or usbat_write_blocks call.
 337  */
 338 static int usbat_set_shuttle_features(struct us_data *us,
 339                                       unsigned char external_trigger,
 340                                       unsigned char epp_control,
 341                                       unsigned char mask_byte,
 342                                       unsigned char test_pattern,
 343                                       unsigned char subcountH,
 344                                       unsigned char subcountL)
 345 {
 346         unsigned char *command = us->iobuf;
 347
 348         command[0] = 0x40;
 349         command[1] = USBAT_CMD_SET_FEAT;
 350
 351         /*
 352          * The only bit relevant to ATA access is bit 6
 353          * which defines 8 bit data access (set) or 16 bit (unset)
 354          */
 355         command[2] = epp_control;
 356
 357         /*
 358          * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1,
 359          * ET1 and ET2 define an external event to be checked for on event of a
 360          * _read_blocks or _write_blocks operation. The read/write will not take
 361          * place unless the defined trigger signal is active.
 362          */
 363         command[3] = external_trigger;
 364
 365         /*
 366          * The resultant byte of the mask operation (see mask_byte) is compared for
 367          * equivalence with this test pattern. If equal, the read/write will take
 368          * place.
 369          */
 370         command[4] = test_pattern;
 371
 372         /*
 373          * This value is logically ANDed with the status register field specified
 374          * in the read/write command.
 375          */
 376         command[5] = mask_byte;
 377
 378         /*
 379          * If ALQ is set in the qualifier, this field contains the address of the
 380          * registers where the byte count should be read for transferring the data.
 381          * If ALQ is not set, then this field contains the number of bytes to be
 382          * transferred.
 383          */
 384         command[6] = subcountL;
 385         command[7] = subcountH;
 386
 387         return usbat_execute_command(us, command, 8);
 388 }
 389
 390 /*
 391  * Block, waiting for an ATA device to become not busy or to report
 392  * an error condition.
 393  */
 394 static int usbat_wait_not_busy(struct us_data *us, int minutes)
 395 {
 396         int i;
 397         int result;
 398         unsigned char *status = us->iobuf;
 399
 400         /*
 401          * Synchronizing cache on a CDR could take a heck of a long time,
 402          * but probably not more than 10 minutes or so. On the other hand,
 403          * doing a full blank on a CDRW at speed 1 will take about 75
 404          * minutes!
 405          */
 406
 407         for (i=0; i<1200+minutes*60; i++) {
 408
 409                 result = usbat_get_status(us, status);
 410
 411                 if (result!=USB_STOR_XFER_GOOD)
 412                         return USB_STOR_TRANSPORT_ERROR;
 413                 if (*status & 0x01) { /* check condition */
 414                         result = usbat_read(us, USBAT_ATA, 0x10, status);
 415                         return USB_STOR_TRANSPORT_FAILED;
 416                 }
 417                 if (*status & 0x20) /* device fault */
 418                         return USB_STOR_TRANSPORT_FAILED;
 419
 420                 if ((*status & 0x80)==0x00) { /* not busy */
 421                         usb_stor_dbg(us, "Waited not busy for %d steps\n", i);
 422                         return USB_STOR_TRANSPORT_GOOD;
 423                 }
 424
 425                 if (i<500)
 426                         msleep(10); /* 5 seconds */
 427                 else if (i<700)
 428                         msleep(50); /* 10 seconds */
 429                 else if (i<1200)
 430                         msleep(100); /* 50 seconds */
 431                 else
 432                         msleep(1000); /* X minutes */
 433         }
 434
 435         usb_stor_dbg(us, "Waited not busy for %d minutes, timing out\n",
 436                      minutes);
 437         return USB_STOR_TRANSPORT_FAILED;
 438 }
 439
 440 /*
 441  * Read block data from the data register
 442  */
 443 static int usbat_read_block(struct us_data *us,
 444                             void* buf,
 445                             unsigned short len,
 446                             int use_sg)
 447 {
 448         int result;
 449         unsigned char *command = us->iobuf;
 450
 451         if (!len)
 452                 return USB_STOR_TRANSPORT_GOOD;
 453
 454         command[0] = 0xC0;
 455         command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK;
 456         command[2] = USBAT_ATA_DATA;
 457         command[3] = 0;
 458         command[4] = 0;
 459         command[5] = 0;
 460         command[6] = LSB_of(len);
 461         command[7] = MSB_of(len);
 462
 463         result = usbat_execute_command(us, command, 8);
 464         if (result != USB_STOR_XFER_GOOD)
 465                 return USB_STOR_TRANSPORT_ERROR;
 466
 467         result = usbat_bulk_read(us, buf, len, use_sg);
 468         return (result == USB_STOR_XFER_GOOD ?
 469                         USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR);
 470 }
 471
 472 /*
 473  * Write block data via the data register
 474  */
 475 static int usbat_write_block(struct us_data *us,
 476                              unsigned char access,
 477                              void* buf,
 478                              unsigned short len,
 479                              int minutes,
 480                              int use_sg)
 481 {
 482         int result;
 483         unsigned char *command = us->iobuf;
 484
 485         if (!len)
 486                 return USB_STOR_TRANSPORT_GOOD;
 487
 488         command[0] = 0x40;
 489         command[1] = access | USBAT_CMD_WRITE_BLOCK;
 490         command[2] = USBAT_ATA_DATA;
 491         command[3] = 0;
 492         command[4] = 0;
 493         command[5] = 0;
 494         command[6] = LSB_of(len);
 495         command[7] = MSB_of(len);
 496
 497         result = usbat_execute_command(us, command, 8);
 498
 499         if (result != USB_STOR_XFER_GOOD)
 500                 return USB_STOR_TRANSPORT_ERROR;
 501
 502         result = usbat_bulk_write(us, buf, len, use_sg);
 503         if (result != USB_STOR_XFER_GOOD)
 504                 return USB_STOR_TRANSPORT_ERROR;
 505
 506         return usbat_wait_not_busy(us, minutes);
 507 }
 508
 509 /*
 510  * Process read and write requests
 511  */
 512 static int usbat_hp8200e_rw_block_test(struct us_data *us,
 513                                        unsigned char access,
 514                                        unsigned char *registers,
 515                                        unsigned char *data_out,
 516                                        unsigned short num_registers,
 517                                        unsigned char data_reg,
 518                                        unsigned char status_reg,
 519                                        unsigned char timeout,
 520                                        unsigned char qualifier,
 521                                        int direction,
 522                                        void *buf,
 523                                        unsigned short len,
 524                                        int use_sg,
 525                                        int minutes)
 526 {
 527         int result;
 528         unsigned int pipe = (direction == DMA_FROM_DEVICE) ?
 529                         us->recv_bulk_pipe : us->send_bulk_pipe;
 530
 531         unsigned char *command = us->iobuf;
 532         int i, j;
 533         int cmdlen;
 534         unsigned char *data = us->iobuf;
 535         unsigned char *status = us->iobuf;
 536
 537         BUG_ON(num_registers > US_IOBUF_SIZE/2);
 538
 539         for (i=0; i<20; i++) {
 540
 541                 /*
 542                  * The first time we send the full command, which consists
 543                  * of downloading the SCSI command followed by downloading
 544                  * the data via a write-and-test.  Any other time we only
 545                  * send the command to download the data -- the SCSI command
 546                  * is still 'active' in some sense in the device.
 547                  *
 548                  * We're only going to try sending the data 10 times. After
 549                  * that, we just return a failure.
 550                  */
 551
 552                 if (i==0) {
 553                         cmdlen = 16;
 554                         /*
 555                          * Write to multiple registers
 556                          * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is
 557                          * necessary here, but that's what came out of the
 558                          * trace every single time.
 559                          */
 560                         command[0] = 0x40;
 561                         command[1] = access | USBAT_CMD_WRITE_REGS;
 562                         command[2] = 0x07;
 563                         command[3] = 0x17;
 564                         command[4] = 0xFC;
 565                         command[5] = 0xE7;
 566                         command[6] = LSB_of(num_registers*2);
 567                         command[7] = MSB_of(num_registers*2);
 568                 } else
 569                         cmdlen = 8;
 570
 571                 /* Conditionally read or write blocks */
 572                 command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0);
 573                 command[cmdlen-7] = access |
 574                                 (direction==DMA_TO_DEVICE ?
 575                                  USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK);
 576                 command[cmdlen-6] = data_reg;
 577                 command[cmdlen-5] = status_reg;
 578                 command[cmdlen-4] = timeout;
 579                 command[cmdlen-3] = qualifier;
 580                 command[cmdlen-2] = LSB_of(len);
 581                 command[cmdlen-1] = MSB_of(len);
 582
 583                 result = usbat_execute_command(us, command, cmdlen);
 584
 585                 if (result != USB_STOR_XFER_GOOD)
 586                         return USB_STOR_TRANSPORT_ERROR;
 587
 588                 if (i==0) {
 589
 590                         for (j=0; j<num_registers; j++) {
 591                                 data[j<<1] = registers[j];
 592                                 data[1+(j<<1)] = data_out[j];
 593                         }
 594
 595                         result = usbat_bulk_write(us, data, num_registers*2, 0);
 596                         if (result != USB_STOR_XFER_GOOD)
 597                                 return USB_STOR_TRANSPORT_ERROR;
 598
 599                 }
 600
 601                 result = usb_stor_bulk_transfer_sg(us,
 602                         pipe, buf, len, use_sg, NULL);
 603
 604                 /*
 605                  * If we get a stall on the bulk download, we'll retry
 606                  * the bulk download -- but not the SCSI command because
 607                  * in some sense the SCSI command is still 'active' and
 608                  * waiting for the data. Don't ask me why this should be;
 609                  * I'm only following what the Windoze driver did.
 610                  *
 611                  * Note that a stall for the test-and-read/write command means
 612                  * that the test failed. In this case we're testing to make
 613                  * sure that the device is error-free
 614                  * (i.e. bit 0 -- CHK -- of status is 0). The most likely
 615                  * hypothesis is that the USBAT chip somehow knows what
 616                  * the device will accept, but doesn't give the device any
 617                  * data until all data is received. Thus, the device would
 618                  * still be waiting for the first byte of data if a stall
 619                  * occurs, even if the stall implies that some data was
 620                  * transferred.
 621                  */
 622
 623                 if (result == USB_STOR_XFER_SHORT ||
 624                                 result == USB_STOR_XFER_STALLED) {
 625
 626                         /*
 627                          * If we're reading and we stalled, then clear
 628                          * the bulk output pipe only the first time.
 629                          */
 630
 631                         if (direction==DMA_FROM_DEVICE && i==0) {
 632                                 if (usb_stor_clear_halt(us,
 633                                                 us->send_bulk_pipe) < 0)
 634                                         return USB_STOR_TRANSPORT_ERROR;
 635                         }
 636
 637                         /*
 638                          * Read status: is the device angry, or just busy?
 639                          */
 640
 641                         result = usbat_read(us, USBAT_ATA,
 642                                 direction==DMA_TO_DEVICE ?
 643                                         USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS,
 644                                 status);
 645
 646                         if (result!=USB_STOR_XFER_GOOD)
 647                                 return USB_STOR_TRANSPORT_ERROR;
 648                         if (*status & 0x01) /* check condition */
 649                                 return USB_STOR_TRANSPORT_FAILED;
 650                         if (*status & 0x20) /* device fault */
 651                                 return USB_STOR_TRANSPORT_FAILED;
 652
 653                         usb_stor_dbg(us, "Redoing %s\n",
 654                                      direction == DMA_TO_DEVICE
 655                                      ? "write" : "read");
 656
 657                 } else if (result != USB_STOR_XFER_GOOD)
 658                         return USB_STOR_TRANSPORT_ERROR;
 659                 else
 660                         return usbat_wait_not_busy(us, minutes);
 661
 662         }
 663
 664         usb_stor_dbg(us, "Bummer! %s bulk data 20 times failed\n",
 665                      direction == DMA_TO_DEVICE ? "Writing" : "Reading");
 666
 667         return USB_STOR_TRANSPORT_FAILED;
 668 }
 669
 670 /*
 671  * Write to multiple registers:
 672  * Allows us to write specific data to any registers. The data to be written
 673  * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN
 674  * which gets sent through bulk out.
 675  * Not designed for large transfers of data!
 676  */
 677 static int usbat_multiple_write(struct us_data *us,
 678                                 unsigned char *registers,
 679                                 unsigned char *data_out,
 680                                 unsigned short num_registers)
 681 {
 682         int i, result;
 683         unsigned char *data = us->iobuf;
 684         unsigned char *command = us->iobuf;
 685
 686         BUG_ON(num_registers > US_IOBUF_SIZE/2);
 687
 688         /* Write to multiple registers, ATA access */
 689         command[0] = 0x40;
 690         command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS;
 691
 692         /* No relevance */
 693         command[2] = 0;
 694         command[3] = 0;
 695         command[4] = 0;
 696         command[5] = 0;
 697
 698         /* Number of bytes to be transferred (incl. addresses and data) */
 699         command[6] = LSB_of(num_registers*2);
 700         command[7] = MSB_of(num_registers*2);
 701
 702         /* The setup command */
 703         result = usbat_execute_command(us, command, 8);
 704         if (result != USB_STOR_XFER_GOOD)
 705                 return USB_STOR_TRANSPORT_ERROR;
 706
 707         /* Create the reg/data, reg/data sequence */
 708         for (i=0; i<num_registers; i++) {
 709                 data[i<<1] = registers[i];
 710                 data[1+(i<<1)] = data_out[i];
 711         }
 712
 713         /* Send the data */
 714         result = usbat_bulk_write(us, data, num_registers*2, 0);
 715         if (result != USB_STOR_XFER_GOOD)
 716                 return USB_STOR_TRANSPORT_ERROR;
 717
 718         if (usbat_get_device_type(us) == USBAT_DEV_HP8200)
 719                 return usbat_wait_not_busy(us, 0);
 720         else
 721                 return USB_STOR_TRANSPORT_GOOD;
 722 }
 723
 724 /*
 725  * Conditionally read blocks from device:
 726  * Allows us to read blocks from a specific data register, based upon the
 727  * condition that a status register can be successfully masked with a status
 728  * qualifier. If this condition is not initially met, the read will wait
 729  * up until a maximum amount of time has elapsed, as specified by timeout.
 730  * The read will start when the condition is met, otherwise the command aborts.
 731  *
 732  * The qualifier defined here is not the value that is masked, it defines
 733  * conditions for the write to take place. The actual masked qualifier (and
 734  * other related details) are defined beforehand with _set_shuttle_features().
 735  */
 736 static int usbat_read_blocks(struct us_data *us,
 737                              void* buffer,
 738                              int len,
 739                              int use_sg)
 740 {
 741         int result;
 742         unsigned char *command = us->iobuf;
 743
 744         command[0] = 0xC0;
 745         command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK;
 746         command[2] = USBAT_ATA_DATA;
 747         command[3] = USBAT_ATA_STATUS;
 748         command[4] = 0xFD; /* Timeout (ms); */
 749         command[5] = USBAT_QUAL_FCQ;
 750         command[6] = LSB_of(len);
 751         command[7] = MSB_of(len);
 752
 753         /* Multiple block read setup command */
 754         result = usbat_execute_command(us, command, 8);
 755         if (result != USB_STOR_XFER_GOOD)
 756                 return USB_STOR_TRANSPORT_FAILED;
 757
 758         /* Read the blocks we just asked for */
 759         result = usbat_bulk_read(us, buffer, len, use_sg);
 760         if (result != USB_STOR_XFER_GOOD)
 761                 return USB_STOR_TRANSPORT_FAILED;
 762
 763         return USB_STOR_TRANSPORT_GOOD;
 764 }
 765
 766 /*
 767  * Conditionally write blocks to device:
 768  * Allows us to write blocks to a specific data register, based upon the
 769  * condition that a status register can be successfully masked with a status
 770  * qualifier. If this condition is not initially met, the write will wait
 771  * up until a maximum amount of time has elapsed, as specified by timeout.
 772  * The read will start when the condition is met, otherwise the command aborts.
 773  *
 774  * The qualifier defined here is not the value that is masked, it defines
 775  * conditions for the write to take place. The actual masked qualifier (and
 776  * other related details) are defined beforehand with _set_shuttle_features().
 777  */
 778 static int usbat_write_blocks(struct us_data *us,
 779                               void* buffer,
 780                               int len,
 781                               int use_sg)
 782 {
 783         int result;
 784         unsigned char *command = us->iobuf;
 785
 786         command[0] = 0x40;
 787         command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK;
 788         command[2] = USBAT_ATA_DATA;
 789         command[3] = USBAT_ATA_STATUS;
 790         command[4] = 0xFD; /* Timeout (ms) */
 791         command[5] = USBAT_QUAL_FCQ;
 792         command[6] = LSB_of(len);
 793         command[7] = MSB_of(len);
 794
 795         /* Multiple block write setup command */
 796         result = usbat_execute_command(us, command, 8);
 797         if (result != USB_STOR_XFER_GOOD)
 798                 return USB_STOR_TRANSPORT_FAILED;
 799
 800         /* Write the data */
 801         result = usbat_bulk_write(us, buffer, len, use_sg);
 802         if (result != USB_STOR_XFER_GOOD)
 803                 return USB_STOR_TRANSPORT_FAILED;
 804
 805         return USB_STOR_TRANSPORT_GOOD;
 806 }
 807
 808 /*
 809  * Read the User IO register
 810  */
 811 static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags)
 812 {
 813         int result;
 814
 815         result = usb_stor_ctrl_transfer(us,
 816                 us->recv_ctrl_pipe,
 817                 USBAT_CMD_UIO,
 818                 0xC0,
 819                 0,
 820                 0,
 821                 data_flags,
 822                 USBAT_UIO_READ);
 823
 824         usb_stor_dbg(us, "UIO register reads %02X\n", *data_flags);
 825
 826         return result;
 827 }
 828
 829 /*
 830  * Write to the User IO register
 831  */
 832 static int usbat_write_user_io(struct us_data *us,
 833                                unsigned char enable_flags,
 834                                unsigned char data_flags)
 835 {
 836         return usb_stor_ctrl_transfer(us,
 837                 us->send_ctrl_pipe,
 838                 USBAT_CMD_UIO,
 839                 0x40,
 840                 short_pack(enable_flags, data_flags),
 841                 0,
 842                 NULL,
 843                 USBAT_UIO_WRITE);
 844 }
 845
 846 /*
 847  * Reset the device
 848  * Often needed on media change.
 849  */
 850 static int usbat_device_reset(struct us_data *us)
 851 {
 852         int rc;
 853
 854         /*
 855          * Reset peripheral, enable peripheral control signals
 856          * (bring reset signal up)
 857          */
 858         rc = usbat_write_user_io(us,
 859                                                          USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0,
 860                                                          USBAT_UIO_EPAD | USBAT_UIO_1);
 861         if (rc != USB_STOR_XFER_GOOD)
 862                 return USB_STOR_TRANSPORT_ERROR;
 863
 864         /*
 865          * Enable peripheral control signals
 866          * (bring reset signal down)
 867          */
 868         rc = usbat_write_user_io(us,
 869                                                          USBAT_UIO_OE1  | USBAT_UIO_OE0,
 870                                                          USBAT_UIO_EPAD | USBAT_UIO_1);
 871         if (rc != USB_STOR_XFER_GOOD)
 872                 return USB_STOR_TRANSPORT_ERROR;
 873
 874         return USB_STOR_TRANSPORT_GOOD;
 875 }
 876
 877 /*
 878  * Enable card detect
 879  */
 880 static int usbat_device_enable_cdt(struct us_data *us)
 881 {
 882         int rc;
 883
 884         /* Enable peripheral control signals and card detect */
 885         rc = usbat_write_user_io(us,
 886                                                          USBAT_UIO_ACKD | USBAT_UIO_OE1  | USBAT_UIO_OE0,
 887                                                          USBAT_UIO_EPAD | USBAT_UIO_1);
 888         if (rc != USB_STOR_XFER_GOOD)
 889                 return USB_STOR_TRANSPORT_ERROR;
 890
 891         return USB_STOR_TRANSPORT_GOOD;
 892 }
 893
 894 /*
 895  * Determine if media is present.
 896  */
 897 static int usbat_flash_check_media_present(struct us_data *us,
 898                                            unsigned char *uio)
 899 {
 900         if (*uio & USBAT_UIO_UI0) {
 901                 usb_stor_dbg(us, "no media detected\n");
 902                 return USBAT_FLASH_MEDIA_NONE;
 903         }
 904
 905         return USBAT_FLASH_MEDIA_CF;
 906 }
 907
 908 /*
 909  * Determine if media has changed since last operation
 910  */
 911 static int usbat_flash_check_media_changed(struct us_data *us,
 912                                            unsigned char *uio)
 913 {
 914         if (*uio & USBAT_UIO_0) {
 915                 usb_stor_dbg(us, "media change detected\n");
 916                 return USBAT_FLASH_MEDIA_CHANGED;
 917         }
 918
 919         return USBAT_FLASH_MEDIA_SAME;
 920 }
 921
 922 /*
 923  * Check for media change / no media and handle the situation appropriately
 924  */
 925 static int usbat_flash_check_media(struct us_data *us,
 926                                    struct usbat_info *info)
 927 {
 928         int rc;
 929         unsigned char *uio = us->iobuf;
 930
 931         rc = usbat_read_user_io(us, uio);
 932         if (rc != USB_STOR_XFER_GOOD)
 933                 return USB_STOR_TRANSPORT_ERROR;
 934
 935         /* Check for media existence */
 936         rc = usbat_flash_check_media_present(us, uio);
 937         if (rc == USBAT_FLASH_MEDIA_NONE) {
 938                 info->sense_key = 0x02;
 939                 info->sense_asc = 0x3A;
 940                 info->sense_ascq = 0x00;
 941                 return USB_STOR_TRANSPORT_FAILED;
 942         }
 943
 944         /* Check for media change */
 945         rc = usbat_flash_check_media_changed(us, uio);
 946         if (rc == USBAT_FLASH_MEDIA_CHANGED) {
 947
 948                 /* Reset and re-enable card detect */
 949                 rc = usbat_device_reset(us);
 950                 if (rc != USB_STOR_TRANSPORT_GOOD)
 951                         return rc;
 952                 rc = usbat_device_enable_cdt(us);
 953                 if (rc != USB_STOR_TRANSPORT_GOOD)
 954                         return rc;
 955
 956                 msleep(50);
 957
 958                 rc = usbat_read_user_io(us, uio);
 959                 if (rc != USB_STOR_XFER_GOOD)
 960                         return USB_STOR_TRANSPORT_ERROR;
 961
 962                 info->sense_key = UNIT_ATTENTION;
 963                 info->sense_asc = 0x28;
 964                 info->sense_ascq = 0x00;
 965                 return USB_STOR_TRANSPORT_FAILED;
 966         }
 967
 968         return USB_STOR_TRANSPORT_GOOD;
 969 }
 970
 971 /*
 972  * Determine whether we are controlling a flash-based reader/writer,
 973  * or a HP8200-based CD drive.
 974  * Sets transport functions as appropriate.
 975  */
 976 static int usbat_identify_device(struct us_data *us,
 977                                  struct usbat_info *info)
 978 {
 979         int rc;
 980         unsigned char status;
 981
 982         if (!us || !info)
 983                 return USB_STOR_TRANSPORT_ERROR;
 984
 985         rc = usbat_device_reset(us);
 986         if (rc != USB_STOR_TRANSPORT_GOOD)
 987                 return rc;
 988         msleep(500);
 989
 990         /*
 991          * In attempt to distinguish between HP CDRW's and Flash readers, we now
 992          * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash
 993          * readers), this command should fail with error. On ATAPI devices (i.e.
 994          * CDROM drives), it should succeed.
 995          */
 996         rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1);
 997         if (rc != USB_STOR_XFER_GOOD)
 998                 return USB_STOR_TRANSPORT_ERROR;
 999
1000         rc = usbat_get_status(us, &status);
1001         if (rc != USB_STOR_XFER_GOOD)
1002                 return USB_STOR_TRANSPORT_ERROR;
1003
1004         /* Check for error bit, or if the command 'fell through' */
1005         if (status == 0xA1 || !(status & 0x01)) {
1006                 /* Device is HP 8200 */
1007                 usb_stor_dbg(us, "Detected HP8200 CDRW\n");
1008                 info->devicetype = USBAT_DEV_HP8200;
1009         } else {
1010                 /* Device is a CompactFlash reader/writer */
1011                 usb_stor_dbg(us, "Detected Flash reader/writer\n");
1012                 info->devicetype = USBAT_DEV_FLASH;
1013         }
1014
1015         return USB_STOR_TRANSPORT_GOOD;
1016 }
1017
1018 /*
1019  * Set the transport function based on the device type
1020  */
1021 static int usbat_set_transport(struct us_data *us,
1022                                struct usbat_info *info,
1023                                int devicetype)
1024 {
1025
1026         if (!info->devicetype)
1027                 info->devicetype = devicetype;
1028
1029         if (!info->devicetype)
1030                 usbat_identify_device(us, info);
1031
1032         switch (info->devicetype) {
1033         default:
1034                 return USB_STOR_TRANSPORT_ERROR;
1035
1036         case  USBAT_DEV_HP8200:
1037                 us->transport = usbat_hp8200e_transport;
1038                 break;
1039
1040         case USBAT_DEV_FLASH:
1041                 us->transport = usbat_flash_transport;
1042                 break;
1043         }
1044
1045         return 0;
1046 }
1047
1048 /*
1049  * Read the media capacity
1050  */
1051 static int usbat_flash_get_sector_count(struct us_data *us,
1052                                         struct usbat_info *info)
1053 {
1054         unsigned char registers[3] = {
1055                 USBAT_ATA_SECCNT,
1056                 USBAT_ATA_DEVICE,
1057                 USBAT_ATA_CMD,
1058         };
1059         unsigned char  command[3] = { 0x01, 0xA0, 0xEC };
1060         unsigned char *reply;
1061         unsigned char status;
1062         int rc;
1063
1064         if (!us || !info)
1065                 return USB_STOR_TRANSPORT_ERROR;
1066
1067         reply = kmalloc(512, GFP_NOIO);
1068         if (!reply)
1069                 return USB_STOR_TRANSPORT_ERROR;
1070
1071         /* ATA command : IDENTIFY DEVICE */
1072         rc = usbat_multiple_write(us, registers, command, 3);
1073         if (rc != USB_STOR_XFER_GOOD) {
1074                 usb_stor_dbg(us, "Gah! identify_device failed\n");
1075                 rc = USB_STOR_TRANSPORT_ERROR;
1076                 goto leave;
1077         }
1078
1079         /* Read device status */
1080         if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) {
1081                 rc = USB_STOR_TRANSPORT_ERROR;
1082                 goto leave;
1083         }
1084
1085         msleep(100);
1086
1087         /* Read the device identification data */
1088         rc = usbat_read_block(us, reply, 512, 0);
1089         if (rc != USB_STOR_TRANSPORT_GOOD)
1090                 goto leave;
1091
1092         info->sectors = ((u32)(reply[117]) << 24) |
1093                 ((u32)(reply[116]) << 16) |
1094                 ((u32)(reply[115]) <<  8) |
1095                 ((u32)(reply[114])      );
1096
1097         rc = USB_STOR_TRANSPORT_GOOD;
1098
1099  leave:
1100         kfree(reply);
1101         return rc;
1102 }
1103
1104 /*
1105  * Read data from device
1106  */
1107 static int usbat_flash_read_data(struct us_data *us,
1108                                                                  struct usbat_info *info,
1109                                                                  u32 sector,
1110                                                                  u32 sectors)
1111 {
1112         unsigned char registers[7] = {
1113                 USBAT_ATA_FEATURES,
1114                 USBAT_ATA_SECCNT,
1115                 USBAT_ATA_SECNUM,
1116                 USBAT_ATA_LBA_ME,
1117                 USBAT_ATA_LBA_HI,
1118                 USBAT_ATA_DEVICE,
1119                 USBAT_ATA_STATUS,
1120         };
1121         unsigned char command[7];
1122         unsigned char *buffer;
1123         unsigned char  thistime;
1124         unsigned int totallen, alloclen;
1125         int len, result;
1126         unsigned int sg_offset = 0;
1127         struct scatterlist *sg = NULL;
1128
1129         result = usbat_flash_check_media(us, info);
1130         if (result != USB_STOR_TRANSPORT_GOOD)
1131                 return result;
1132
1133         /*
1134          * we're working in LBA mode.  according to the ATA spec,
1135          * we can support up to 28-bit addressing.  I don't know if Jumpshot
1136          * supports beyond 24-bit addressing.  It's kind of hard to test
1137          * since it requires > 8GB CF card.
1138          */
1139
1140         if (sector > 0x0FFFFFFF)
1141                 return USB_STOR_TRANSPORT_ERROR;
1142
1143         totallen = sectors * info->ssize;
1144
1145         /*
1146          * Since we don't read more than 64 KB at a time, we have to create
1147          * a bounce buffer and move the data a piece at a time between the
1148          * bounce buffer and the actual transfer buffer.
1149          */
1150
1151         alloclen = min(totallen, 65536u);
1152         buffer = kmalloc(alloclen, GFP_NOIO);
1153         if (buffer == NULL)
1154                 return USB_STOR_TRANSPORT_ERROR;
1155
1156         do {
1157                 /*
1158                  * loop, never allocate or transfer more than 64k at once
1159                  * (min(128k, 255*info->ssize) is the real limit)
1160                  */
1161                 len = min(totallen, alloclen);
1162                 thistime = (len / info->ssize) & 0xff;
1163
1164                 /* ATA command 0x20 (READ SECTORS) */
1165                 usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20);
1166
1167                 /* Write/execute ATA read command */
1168                 result = usbat_multiple_write(us, registers, command, 7);
1169                 if (result != USB_STOR_TRANSPORT_GOOD)
1170                         goto leave;
1171
1172                 /* Read the data we just requested */
1173                 result = usbat_read_blocks(us, buffer, len, 0);
1174                 if (result != USB_STOR_TRANSPORT_GOOD)
1175                         goto leave;
1176
1177                 usb_stor_dbg(us, "%d bytes\n", len);
1178
1179                 /* Store the data in the transfer buffer */
1180                 usb_stor_access_xfer_buf(buffer, len, us->srb,
1181                                          &sg, &sg_offset, TO_XFER_BUF);
1182
1183                 sector += thistime;
1184                 totallen -= len;
1185         } while (totallen > 0);
1186
1187         kfree(buffer);
1188         return USB_STOR_TRANSPORT_GOOD;
1189
1190 leave:
1191         kfree(buffer);
1192         return USB_STOR_TRANSPORT_ERROR;
1193 }
1194
1195 /*
1196  * Write data to device
1197  */
1198 static int usbat_flash_write_data(struct us_data *us,
1199                                                                   struct usbat_info *info,
1200                                                                   u32 sector,
1201                                                                   u32 sectors)
1202 {
1203         unsigned char registers[7] = {
1204                 USBAT_ATA_FEATURES,
1205                 USBAT_ATA_SECCNT,
1206                 USBAT_ATA_SECNUM,
1207                 USBAT_ATA_LBA_ME,
1208                 USBAT_ATA_LBA_HI,
1209                 USBAT_ATA_DEVICE,
1210                 USBAT_ATA_STATUS,
1211         };
1212         unsigned char command[7];
1213         unsigned char *buffer;
1214         unsigned char  thistime;
1215         unsigned int totallen, alloclen;
1216         int len, result;
1217         unsigned int sg_offset = 0;
1218         struct scatterlist *sg = NULL;
1219
1220         result = usbat_flash_check_media(us, info);
1221         if (result != USB_STOR_TRANSPORT_GOOD)
1222                 return result;
1223
1224         /*
1225          * we're working in LBA mode.  according to the ATA spec,
1226          * we can support up to 28-bit addressing.  I don't know if the device
1227          * supports beyond 24-bit addressing.  It's kind of hard to test
1228          * since it requires > 8GB media.
1229          */
1230
1231         if (sector > 0x0FFFFFFF)
1232                 return USB_STOR_TRANSPORT_ERROR;
1233
1234         totallen = sectors * info->ssize;
1235
1236         /*
1237          * Since we don't write more than 64 KB at a time, we have to create
1238          * a bounce buffer and move the data a piece at a time between the
1239          * bounce buffer and the actual transfer buffer.
1240          */
1241
1242         alloclen = min(totallen, 65536u);
1243         buffer = kmalloc(alloclen, GFP_NOIO);
1244         if (buffer == NULL)
1245                 return USB_STOR_TRANSPORT_ERROR;
1246
1247         do {
1248                 /*
1249                  * loop, never allocate or transfer more than 64k at once
1250                  * (min(128k, 255*info->ssize) is the real limit)
1251                  */
1252                 len = min(totallen, alloclen);
1253                 thistime = (len / info->ssize) & 0xff;
1254
1255                 /* Get the data from the transfer buffer */
1256                 usb_stor_access_xfer_buf(buffer, len, us->srb,
1257                                          &sg, &sg_offset, FROM_XFER_BUF);
1258
1259                 /* ATA command 0x30 (WRITE SECTORS) */
1260                 usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30);
1261
1262                 /* Write/execute ATA write command */
1263                 result = usbat_multiple_write(us, registers, command, 7);
1264                 if (result != USB_STOR_TRANSPORT_GOOD)
1265                         goto leave;
1266
1267                 /* Write the data */
1268                 result = usbat_write_blocks(us, buffer, len, 0);
1269                 if (result != USB_STOR_TRANSPORT_GOOD)
1270                         goto leave;
1271
1272                 sector += thistime;
1273                 totallen -= len;
1274         } while (totallen > 0);
1275
1276         kfree(buffer);
1277         return result;
1278
1279 leave:
1280         kfree(buffer);
1281         return USB_STOR_TRANSPORT_ERROR;
1282 }
1283
1284 /*
1285  * Squeeze a potentially huge (> 65535 byte) read10 command into
1286  * a little ( <= 65535 byte) ATAPI pipe
1287  */
1288 static int usbat_hp8200e_handle_read10(struct us_data *us,
1289                                        unsigned char *registers,
1290                                        unsigned char *data,
1291                                        struct scsi_cmnd *srb)
1292 {
1293         int result = USB_STOR_TRANSPORT_GOOD;
1294         unsigned char *buffer;
1295         unsigned int len;
1296         unsigned int sector;
1297         unsigned int sg_offset = 0;
1298         struct scatterlist *sg = NULL;
1299
1300         usb_stor_dbg(us, "transfersize %d\n", srb->transfersize);
1301
1302         if (scsi_bufflen(srb) < 0x10000) {
1303
1304                 result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1305                         registers, data, 19,
1306                         USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1307                         (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1308                         DMA_FROM_DEVICE,
1309                         scsi_sglist(srb),
1310                         scsi_bufflen(srb), scsi_sg_count(srb), 1);
1311
1312                 return result;
1313         }
1314
1315         /*
1316          * Since we're requesting more data than we can handle in
1317          * a single read command (max is 64k-1), we will perform
1318          * multiple reads, but each read must be in multiples of
1319          * a sector.  Luckily the sector size is in srb->transfersize
1320          * (see linux/drivers/scsi/sr.c).
1321          */
1322
1323         if (data[7+0] == GPCMD_READ_CD) {
1324                 len = short_pack(data[7+9], data[7+8]);
1325                 len <<= 16;
1326                 len |= data[7+7];
1327                 usb_stor_dbg(us, "GPCMD_READ_CD: len %d\n", len);
1328                 srb->transfersize = scsi_bufflen(srb)/len;
1329         }
1330
1331         if (!srb->transfersize)  {
1332                 srb->transfersize = 2048; /* A guess */
1333                 usb_stor_dbg(us, "transfersize 0, forcing %d\n",
1334                              srb->transfersize);
1335         }
1336
1337         /*
1338          * Since we only read in one block at a time, we have to create
1339          * a bounce buffer and move the data a piece at a time between the
1340          * bounce buffer and the actual transfer buffer.
1341          */
1342
1343         len = (65535/srb->transfersize) * srb->transfersize;
1344         usb_stor_dbg(us, "Max read is %d bytes\n", len);
1345         len = min(len, scsi_bufflen(srb));
1346         buffer = kmalloc(len, GFP_NOIO);
1347         if (buffer == NULL) /* bloody hell! */
1348                 return USB_STOR_TRANSPORT_FAILED;
1349         sector = short_pack(data[7+3], data[7+2]);
1350         sector <<= 16;
1351         sector |= short_pack(data[7+5], data[7+4]);
1352         transferred = 0;
1353
1354         while (transferred != scsi_bufflen(srb)) {
1355
1356                 if (len > scsi_bufflen(srb) - transferred)
1357                         len = scsi_bufflen(srb) - transferred;
1358
1359                 data[3] = len&0xFF;       /* (cylL) = expected length (L) */
1360                 data[4] = (len>>8)&0xFF;  /* (cylH) = expected length (H) */
1361
1362                 /* Fix up the SCSI command sector and num sectors */
1363
1364                 data[7+2] = MSB_of(sector>>16); /* SCSI command sector */
1365                 data[7+3] = LSB_of(sector>>16);
1366                 data[7+4] = MSB_of(sector&0xFFFF);
1367                 data[7+5] = LSB_of(sector&0xFFFF);
1368                 if (data[7+0] == GPCMD_READ_CD)
1369                         data[7+6] = 0;
1370                 data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */
1371                 data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */
1372
1373                 result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1374                         registers, data, 19,
1375                         USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1376                         (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1377                         DMA_FROM_DEVICE,
1378                         buffer,
1379                         len, 0, 1);
1380
1381                 if (result != USB_STOR_TRANSPORT_GOOD)
1382                         break;
1383
1384                 /* Store the data in the transfer buffer */
1385                 usb_stor_access_xfer_buf(buffer, len, srb,
1386                                  &sg, &sg_offset, TO_XFER_BUF);
1387
1388                 /* Update the amount transferred and the sector number */
1389
1390                 transferred += len;
1391                 sector += len / srb->transfersize;
1392
1393         } /* while transferred != scsi_bufflen(srb) */
1394
1395         kfree(buffer);
1396         return result;
1397 }
1398
1399 static int usbat_select_and_test_registers(struct us_data *us)
1400 {
1401         int selector;
1402         unsigned char *status = us->iobuf;
1403
1404         /* try device = master, then device = slave. */
1405         for (selector = 0xA0; selector <= 0xB0; selector += 0x10) {
1406                 if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) !=
1407                                 USB_STOR_XFER_GOOD)
1408                         return USB_STOR_TRANSPORT_ERROR;
1409
1410                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) !=
1411                                 USB_STOR_XFER_GOOD)
1412                         return USB_STOR_TRANSPORT_ERROR;
1413
1414                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) !=
1415                                 USB_STOR_XFER_GOOD)
1416                         return USB_STOR_TRANSPORT_ERROR;
1417
1418                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1419                                 USB_STOR_XFER_GOOD)
1420                         return USB_STOR_TRANSPORT_ERROR;
1421
1422                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
1423                                 USB_STOR_XFER_GOOD)
1424                         return USB_STOR_TRANSPORT_ERROR;
1425
1426                 if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) !=
1427                                 USB_STOR_XFER_GOOD)
1428                         return USB_STOR_TRANSPORT_ERROR;
1429
1430                 if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) !=
1431                                 USB_STOR_XFER_GOOD)
1432                         return USB_STOR_TRANSPORT_ERROR;
1433
1434                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1435                                 USB_STOR_XFER_GOOD)
1436                         return USB_STOR_TRANSPORT_ERROR;
1437
1438                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1439                                 USB_STOR_XFER_GOOD)
1440                         return USB_STOR_TRANSPORT_ERROR;
1441         }
1442
1443         return USB_STOR_TRANSPORT_GOOD;
1444 }
1445
1446 /*
1447  * Initialize the USBAT processor and the storage device
1448  */
1449 static int init_usbat(struct us_data *us, int devicetype)
1450 {
1451         int rc;
1452         struct usbat_info *info;
1453         unsigned char subcountH = USBAT_ATA_LBA_HI;
1454         unsigned char subcountL = USBAT_ATA_LBA_ME;
1455         unsigned char *status = us->iobuf;
1456
1457         us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO);
1458         if (!us->extra)
1459                 return 1;
1460
1461         info = (struct usbat_info *) (us->extra);
1462
1463         /* Enable peripheral control signals */
1464         rc = usbat_write_user_io(us,
1465                                  USBAT_UIO_OE1 | USBAT_UIO_OE0,
1466                                  USBAT_UIO_EPAD | USBAT_UIO_1);
1467         if (rc != USB_STOR_XFER_GOOD)
1468                 return USB_STOR_TRANSPORT_ERROR;
1469
1470         usb_stor_dbg(us, "INIT 1\n");
1471
1472         msleep(2000);
1473
1474         rc = usbat_read_user_io(us, status);
1475         if (rc != USB_STOR_TRANSPORT_GOOD)
1476                 return rc;
1477
1478         usb_stor_dbg(us, "INIT 2\n");
1479
1480         rc = usbat_read_user_io(us, status);
1481         if (rc != USB_STOR_XFER_GOOD)
1482                 return USB_STOR_TRANSPORT_ERROR;
1483
1484         rc = usbat_read_user_io(us, status);
1485         if (rc != USB_STOR_XFER_GOOD)
1486                 return USB_STOR_TRANSPORT_ERROR;
1487
1488         usb_stor_dbg(us, "INIT 3\n");
1489
1490         rc = usbat_select_and_test_registers(us);
1491         if (rc != USB_STOR_TRANSPORT_GOOD)
1492                 return rc;
1493
1494         usb_stor_dbg(us, "INIT 4\n");
1495
1496         rc = usbat_read_user_io(us, status);
1497         if (rc != USB_STOR_XFER_GOOD)
1498                 return USB_STOR_TRANSPORT_ERROR;
1499
1500         usb_stor_dbg(us, "INIT 5\n");
1501
1502         /* Enable peripheral control signals and card detect */
1503         rc = usbat_device_enable_cdt(us);
1504         if (rc != USB_STOR_TRANSPORT_GOOD)
1505                 return rc;
1506
1507         usb_stor_dbg(us, "INIT 6\n");
1508
1509         rc = usbat_read_user_io(us, status);
1510         if (rc != USB_STOR_XFER_GOOD)
1511                 return USB_STOR_TRANSPORT_ERROR;
1512
1513         usb_stor_dbg(us, "INIT 7\n");
1514
1515         msleep(1400);
1516
1517         rc = usbat_read_user_io(us, status);
1518         if (rc != USB_STOR_XFER_GOOD)
1519                 return USB_STOR_TRANSPORT_ERROR;
1520
1521         usb_stor_dbg(us, "INIT 8\n");
1522
1523         rc = usbat_select_and_test_registers(us);
1524         if (rc != USB_STOR_TRANSPORT_GOOD)
1525                 return rc;
1526
1527         usb_stor_dbg(us, "INIT 9\n");
1528
1529         /* At this point, we need to detect which device we are using */
1530         if (usbat_set_transport(us, info, devicetype))
1531                 return USB_STOR_TRANSPORT_ERROR;
1532
1533         usb_stor_dbg(us, "INIT 10\n");
1534
1535         if (usbat_get_device_type(us) == USBAT_DEV_FLASH) {
1536                 subcountH = 0x02;
1537                 subcountL = 0x00;
1538         }
1539         rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1),
1540                                                                         0x00, 0x88, 0x08, subcountH, subcountL);
1541         if (rc != USB_STOR_XFER_GOOD)
1542                 return USB_STOR_TRANSPORT_ERROR;
1543
1544         usb_stor_dbg(us, "INIT 11\n");
1545
1546         return USB_STOR_TRANSPORT_GOOD;
1547 }
1548
1549 /*
1550  * Transport for the HP 8200e
1551  */
1552 static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us)
1553 {
1554         int result;
1555         unsigned char *status = us->iobuf;
1556         unsigned char registers[32];
1557         unsigned char data[32];
1558         unsigned int len;
1559         int i;
1560
1561         len = scsi_bufflen(srb);
1562
1563         /*
1564          * Send A0 (ATA PACKET COMMAND).
1565          * Note: I guess we're never going to get any of the ATA
1566          * commands... just ATA Packet Commands.
1567          */
1568
1569         registers[0] = USBAT_ATA_FEATURES;
1570         registers[1] = USBAT_ATA_SECCNT;
1571         registers[2] = USBAT_ATA_SECNUM;
1572         registers[3] = USBAT_ATA_LBA_ME;
1573         registers[4] = USBAT_ATA_LBA_HI;
1574         registers[5] = USBAT_ATA_DEVICE;
1575         registers[6] = USBAT_ATA_CMD;
1576         data[0] = 0x00;
1577         data[1] = 0x00;
1578         data[2] = 0x00;
1579         data[3] = len&0xFF;             /* (cylL) = expected length (L) */
1580         data[4] = (len>>8)&0xFF;        /* (cylH) = expected length (H) */
1581         data[5] = 0xB0;                 /* (device sel) = slave */
1582         data[6] = 0xA0;                 /* (command) = ATA PACKET COMMAND */
1583
1584         for (i=7; i<19; i++) {
1585                 registers[i] = 0x10;
1586                 data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7];
1587         }
1588
1589         result = usbat_get_status(us, status);
1590         usb_stor_dbg(us, "Status = %02X\n", *status);
1591         if (result != USB_STOR_XFER_GOOD)
1592                 return USB_STOR_TRANSPORT_ERROR;
1593         if (srb->cmnd[0] == TEST_UNIT_READY)
1594                 transferred = 0;
1595
1596         if (srb->sc_data_direction == DMA_TO_DEVICE) {
1597
1598                 result = usbat_hp8200e_rw_block_test(us, USBAT_ATA,
1599                         registers, data, 19,
1600                         USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD,
1601                         (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ),
1602                         DMA_TO_DEVICE,
1603                         scsi_sglist(srb),
1604                         len, scsi_sg_count(srb), 10);
1605
1606                 if (result == USB_STOR_TRANSPORT_GOOD) {
1607                         transferred += len;
1608                         usb_stor_dbg(us, "Wrote %08X bytes\n", transferred);
1609                 }
1610
1611                 return result;
1612
1613         } else if (srb->cmnd[0] == READ_10 ||
1614                    srb->cmnd[0] == GPCMD_READ_CD) {
1615
1616                 return usbat_hp8200e_handle_read10(us, registers, data, srb);
1617
1618         }
1619
1620         if (len > 0xFFFF) {
1621                 usb_stor_dbg(us, "Error: len = %08X... what do I do now?\n",
1622                              len);
1623                 return USB_STOR_TRANSPORT_ERROR;
1624         }
1625
1626         result = usbat_multiple_write(us, registers, data, 7);
1627
1628         if (result != USB_STOR_TRANSPORT_GOOD)
1629                 return result;
1630
1631         /*
1632          * Write the 12-byte command header.
1633          *
1634          * If the command is BLANK then set the timer for 75 minutes.
1635          * Otherwise set it for 10 minutes.
1636          *
1637          * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW
1638          * AT SPEED 4 IS UNRELIABLE!!!
1639          */
1640
1641         result = usbat_write_block(us, USBAT_ATA, srb->cmnd, 12,
1642                                    srb->cmnd[0] == GPCMD_BLANK ? 75 : 10, 0);
1643
1644         if (result != USB_STOR_TRANSPORT_GOOD)
1645                 return result;
1646
1647         /* If there is response data to be read in then do it here. */
1648
1649         if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) {
1650
1651                 /* How many bytes to read in? Check cylL register */
1652
1653                 if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) !=
1654                         USB_STOR_XFER_GOOD) {
1655                         return USB_STOR_TRANSPORT_ERROR;
1656                 }
1657
1658                 if (len > 0xFF) { /* need to read cylH also */
1659                         len = *status;
1660                         if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) !=
1661                                     USB_STOR_XFER_GOOD) {
1662                                 return USB_STOR_TRANSPORT_ERROR;
1663                         }
1664                         len += ((unsigned int) *status)<<8;
1665                 }
1666                 else
1667                         len = *status;
1668
1669
1670                 result = usbat_read_block(us, scsi_sglist(srb), len,
1671                                                            scsi_sg_count(srb));
1672         }
1673
1674         return result;
1675 }
1676
1677 /*
1678  * Transport for USBAT02-based CompactFlash and similar storage devices
1679  */
1680 static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us)
1681 {
1682         int rc;
1683         struct usbat_info *info = (struct usbat_info *) (us->extra);
1684         unsigned long block, blocks;
1685         unsigned char *ptr = us->iobuf;
1686         static unsigned char inquiry_response[36] = {
1687                 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00
1688         };
1689
1690         if (srb->cmnd[0] == INQUIRY) {
1691                 usb_stor_dbg(us, "INQUIRY - Returning bogus response\n");
1692                 memcpy(ptr, inquiry_response, sizeof(inquiry_response));
1693                 fill_inquiry_response(us, ptr, 36);
1694                 return USB_STOR_TRANSPORT_GOOD;
1695         }
1696
1697         if (srb->cmnd[0] == READ_CAPACITY) {
1698                 rc = usbat_flash_check_media(us, info);
1699                 if (rc != USB_STOR_TRANSPORT_GOOD)
1700                         return rc;
1701
1702                 rc = usbat_flash_get_sector_count(us, info);
1703                 if (rc != USB_STOR_TRANSPORT_GOOD)
1704                         return rc;
1705
1706                 /* hard coded 512 byte sectors as per ATA spec */
1707                 info->ssize = 0x200;
1708                 usb_stor_dbg(us, "READ_CAPACITY: %ld sectors, %ld bytes per sector\n",
1709                              info->sectors, info->ssize);
1710
1711                 /*
1712                  * build the reply
1713                  * note: must return the sector number of the last sector,
1714                  * *not* the total number of sectors
1715                  */
1716                 ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1);
1717                 ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize);
1718                 usb_stor_set_xfer_buf(ptr, 8, srb);
1719
1720                 return USB_STOR_TRANSPORT_GOOD;
1721         }
1722
1723         if (srb->cmnd[0] == MODE_SELECT_10) {
1724                 usb_stor_dbg(us, "Gah! MODE_SELECT_10\n");
1725                 return USB_STOR_TRANSPORT_ERROR;
1726         }
1727
1728         if (srb->cmnd[0] == READ_10) {
1729                 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1730                                 ((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
1731
1732                 blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
1733
1734                 usb_stor_dbg(us, "READ_10: read block 0x%04lx  count %ld\n",
1735                              block, blocks);
1736                 return usbat_flash_read_data(us, info, block, blocks);
1737         }
1738
1739         if (srb->cmnd[0] == READ_12) {
1740                 /*
1741                  * I don't think we'll ever see a READ_12 but support it anyway
1742                  */
1743                 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1744                         ((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
1745
1746                 blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
1747                          ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
1748
1749                 usb_stor_dbg(us, "READ_12: read block 0x%04lx  count %ld\n",
1750                              block, blocks);
1751                 return usbat_flash_read_data(us, info, block, blocks);
1752         }
1753
1754         if (srb->cmnd[0] == WRITE_10) {
1755                 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1756                         ((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
1757
1758                 blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8]));
1759
1760                 usb_stor_dbg(us, "WRITE_10: write block 0x%04lx  count %ld\n",
1761                              block, blocks);
1762                 return usbat_flash_write_data(us, info, block, blocks);
1763         }
1764
1765         if (srb->cmnd[0] == WRITE_12) {
1766                 /*
1767                  * I don't think we'll ever see a WRITE_12 but support it anyway
1768                  */
1769                 block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) |
1770                         ((u32)(srb->cmnd[4]) <<  8) | ((u32)(srb->cmnd[5]));
1771
1772                 blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) |
1773                          ((u32)(srb->cmnd[8]) <<  8) | ((u32)(srb->cmnd[9]));
1774
1775                 usb_stor_dbg(us, "WRITE_12: write block 0x%04lx  count %ld\n",
1776                              block, blocks);
1777                 return usbat_flash_write_data(us, info, block, blocks);
1778         }
1779
1780
1781         if (srb->cmnd[0] == TEST_UNIT_READY) {
1782                 usb_stor_dbg(us, "TEST_UNIT_READY\n");
1783
1784                 rc = usbat_flash_check_media(us, info);
1785                 if (rc != USB_STOR_TRANSPORT_GOOD)
1786                         return rc;
1787
1788                 return usbat_check_status(us);
1789         }
1790
1791         if (srb->cmnd[0] == REQUEST_SENSE) {
1792                 usb_stor_dbg(us, "REQUEST_SENSE\n");
1793
1794                 memset(ptr, 0, 18);
1795                 ptr[0] = 0xF0;
1796                 ptr[2] = info->sense_key;
1797                 ptr[7] = 11;
1798                 ptr[12] = info->sense_asc;
1799                 ptr[13] = info->sense_ascq;
1800                 usb_stor_set_xfer_buf(ptr, 18, srb);
1801
1802                 return USB_STOR_TRANSPORT_GOOD;
1803         }
1804
1805         if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) {
1806                 /*
1807                  * sure.  whatever.  not like we can stop the user from popping
1808                  * the media out of the device (no locking doors, etc)
1809                  */
1810                 return USB_STOR_TRANSPORT_GOOD;
1811         }
1812
1813         usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n",
1814                      srb->cmnd[0], srb->cmnd[0]);
1815         info->sense_key = 0x05;
1816         info->sense_asc = 0x20;
1817         info->sense_ascq = 0x00;
1818         return USB_STOR_TRANSPORT_FAILED;
1819 }
1820
1821 static int init_usbat_cd(struct us_data *us)
1822 {
1823         return init_usbat(us, USBAT_DEV_HP8200);
1824 }
1825
1826 static int init_usbat_flash(struct us_data *us)
1827 {
1828         return init_usbat(us, USBAT_DEV_FLASH);
1829 }
1830
1831 static struct scsi_host_template usbat_host_template;
1832
1833 static int usbat_probe(struct usb_interface *intf,
1834                          const struct usb_device_id *id)
1835 {
1836         struct us_data *us;
1837         int result;
1838
1839         result = usb_stor_probe1(&us, intf, id,
1840                         (id - usbat_usb_ids) + usbat_unusual_dev_list,
1841                         &usbat_host_template);
1842         if (result)
1843                 return result;
1844
1845         /*
1846          * The actual transport will be determined later by the
1847          * initialization routine; this is just a placeholder.
1848          */
1849         us->transport_name = "Shuttle USBAT";
1850         us->transport = usbat_flash_transport;
1851         us->transport_reset = usb_stor_CB_reset;
1852         us->max_lun = 0;
1853
1854         result = usb_stor_probe2(us);
1855         return result;
1856 }
1857
1858 static struct usb_driver usbat_driver = {
1859         .name =         DRV_NAME,
1860         .probe =        usbat_probe,
1861         .disconnect =   usb_stor_disconnect,
1862         .suspend =      usb_stor_suspend,
1863         .resume =       usb_stor_resume,
1864         .reset_resume = usb_stor_reset_resume,
1865         .pre_reset =    usb_stor_pre_reset,
1866         .post_reset =   usb_stor_post_reset,
1867         .id_table =     usbat_usb_ids,
1868         .soft_unbind =  1,
1869         .no_dynamic_id = 1,
1870 };
1871
1872 module_usb_stor_driver(usbat_driver, usbat_host_template, DRV_NAME);