Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1 | /* Driver for SCM Microsystems (a.k.a. Shuttle) USB-ATAPI cable |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2 | * |
| 3 | * $Id: shuttle_usbat.c,v 1.17 2002/04/22 03:39:43 mdharm Exp $ |
| 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 | * This program is free software; you can redistribute it and/or modify it |
| 32 | * under the terms of the GNU General Public License as published by the |
| 33 | * Free Software Foundation; either version 2, or (at your option) any |
| 34 | * later version. |
| 35 | * |
| 36 | * This program is distributed in the hope that it will be useful, but |
| 37 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 38 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 39 | * General Public License for more details. |
| 40 | * |
| 41 | * You should have received a copy of the GNU General Public License along |
| 42 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 43 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 44 | */ |
| 45 | |
| 46 | #include <linux/sched.h> |
| 47 | #include <linux/errno.h> |
| 48 | #include <linux/slab.h> |
| 49 | #include <linux/cdrom.h> |
| 50 | |
| 51 | #include <scsi/scsi.h> |
| 52 | #include <scsi/scsi_cmnd.h> |
| 53 | |
| 54 | #include "usb.h" |
| 55 | #include "transport.h" |
| 56 | #include "protocol.h" |
| 57 | #include "debug.h" |
| 58 | #include "shuttle_usbat.h" |
| 59 | |
| 60 | #define short_pack(LSB,MSB) ( ((u16)(LSB)) | ( ((u16)(MSB))<<8 ) ) |
| 61 | #define LSB_of(s) ((s)&0xFF) |
| 62 | #define MSB_of(s) ((s)>>8) |
| 63 | |
| 64 | static int transferred = 0; |
| 65 | |
| 66 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us); |
| 67 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us); |
| 68 | |
| 69 | /* |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 70 | * Convenience function to produce an ATA read/write sectors command |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | * Use cmd=0x20 for read, cmd=0x30 for write |
| 72 | */ |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 73 | static void usbat_pack_ata_sector_cmd(unsigned char *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | unsigned char thistime, |
| 75 | u32 sector, unsigned char cmd) |
| 76 | { |
| 77 | buf[0] = 0; |
| 78 | buf[1] = thistime; |
| 79 | buf[2] = sector & 0xFF; |
| 80 | buf[3] = (sector >> 8) & 0xFF; |
| 81 | buf[4] = (sector >> 16) & 0xFF; |
| 82 | buf[5] = 0xE0 | ((sector >> 24) & 0x0F); |
| 83 | buf[6] = cmd; |
| 84 | } |
| 85 | |
| 86 | /* |
| 87 | * Convenience function to get the device type (flash or hp8200) |
| 88 | */ |
| 89 | static int usbat_get_device_type(struct us_data *us) |
| 90 | { |
| 91 | return ((struct usbat_info*)us->extra)->devicetype; |
| 92 | } |
| 93 | |
| 94 | /* |
| 95 | * Read a register from the device |
| 96 | */ |
| 97 | static int usbat_read(struct us_data *us, |
| 98 | unsigned char access, |
| 99 | unsigned char reg, |
| 100 | unsigned char *content) |
| 101 | { |
| 102 | return usb_stor_ctrl_transfer(us, |
| 103 | us->recv_ctrl_pipe, |
| 104 | access | USBAT_CMD_READ_REG, |
| 105 | 0xC0, |
| 106 | (u16)reg, |
| 107 | 0, |
| 108 | content, |
| 109 | 1); |
| 110 | } |
| 111 | |
| 112 | /* |
| 113 | * Write to a register on the device |
| 114 | */ |
| 115 | static int usbat_write(struct us_data *us, |
| 116 | unsigned char access, |
| 117 | unsigned char reg, |
| 118 | unsigned char content) |
| 119 | { |
| 120 | return usb_stor_ctrl_transfer(us, |
| 121 | us->send_ctrl_pipe, |
| 122 | access | USBAT_CMD_WRITE_REG, |
| 123 | 0x40, |
| 124 | short_pack(reg, content), |
| 125 | 0, |
| 126 | NULL, |
| 127 | 0); |
| 128 | } |
| 129 | |
| 130 | /* |
| 131 | * Convenience function to perform a bulk read |
| 132 | */ |
| 133 | static int usbat_bulk_read(struct us_data *us, |
| 134 | unsigned char *data, |
| 135 | unsigned int len) |
| 136 | { |
| 137 | if (len == 0) |
| 138 | return USB_STOR_XFER_GOOD; |
| 139 | |
| 140 | US_DEBUGP("usbat_bulk_read: len = %d\n", len); |
| 141 | return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, data, len, NULL); |
| 142 | } |
| 143 | |
| 144 | /* |
| 145 | * Convenience function to perform a bulk write |
| 146 | */ |
| 147 | static int usbat_bulk_write(struct us_data *us, |
| 148 | unsigned char *data, |
| 149 | unsigned int len) |
| 150 | { |
| 151 | if (len == 0) |
| 152 | return USB_STOR_XFER_GOOD; |
| 153 | |
| 154 | US_DEBUGP("usbat_bulk_write: len = %d\n", len); |
| 155 | return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, data, len, NULL); |
| 156 | } |
| 157 | |
| 158 | /* |
| 159 | * Some USBAT-specific commands can only be executed over a command transport |
| 160 | * This transport allows one (len=8) or two (len=16) vendor-specific commands |
| 161 | * to be executed. |
| 162 | */ |
| 163 | static int usbat_execute_command(struct us_data *us, |
| 164 | unsigned char *commands, |
| 165 | unsigned int len) |
| 166 | { |
| 167 | return usb_stor_ctrl_transfer(us, us->send_ctrl_pipe, |
| 168 | USBAT_CMD_EXEC_CMD, 0x40, 0, 0, |
| 169 | commands, len); |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * Read the status register |
| 174 | */ |
| 175 | static int usbat_get_status(struct us_data *us, unsigned char *status) |
| 176 | { |
| 177 | int rc; |
| 178 | rc = usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status); |
| 179 | |
| 180 | US_DEBUGP("usbat_get_status: 0x%02X\n", (unsigned short) (*status)); |
| 181 | return rc; |
| 182 | } |
| 183 | |
| 184 | /* |
| 185 | * Check the device status |
| 186 | */ |
| 187 | static int usbat_check_status(struct us_data *us) |
| 188 | { |
| 189 | unsigned char *reply = us->iobuf; |
| 190 | int rc; |
| 191 | |
| 192 | if (!us) |
| 193 | return USB_STOR_TRANSPORT_ERROR; |
| 194 | |
| 195 | rc = usbat_get_status(us, reply); |
| 196 | if (rc != USB_STOR_XFER_GOOD) |
| 197 | return USB_STOR_TRANSPORT_FAILED; |
| 198 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 199 | /* error/check condition (0x51 is ok) */ |
| 200 | if (*reply & 0x01 && *reply != 0x51) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 201 | return USB_STOR_TRANSPORT_FAILED; |
| 202 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 203 | /* device fault */ |
| 204 | if (*reply & 0x20) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | return USB_STOR_TRANSPORT_FAILED; |
| 206 | |
| 207 | return USB_STOR_TRANSPORT_GOOD; |
| 208 | } |
| 209 | |
| 210 | /* |
| 211 | * Stores critical information in internal registers in prepartion for the execution |
| 212 | * of a conditional usbat_read_blocks or usbat_write_blocks call. |
| 213 | */ |
| 214 | static int usbat_set_shuttle_features(struct us_data *us, |
| 215 | unsigned char external_trigger, |
| 216 | unsigned char epp_control, |
| 217 | unsigned char mask_byte, |
| 218 | unsigned char test_pattern, |
| 219 | unsigned char subcountH, |
| 220 | unsigned char subcountL) |
| 221 | { |
| 222 | unsigned char *command = us->iobuf; |
| 223 | |
| 224 | command[0] = 0x40; |
| 225 | command[1] = USBAT_CMD_SET_FEAT; |
| 226 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 227 | /* |
| 228 | * The only bit relevant to ATA access is bit 6 |
| 229 | * which defines 8 bit data access (set) or 16 bit (unset) |
| 230 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 231 | command[2] = epp_control; |
| 232 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 233 | /* |
| 234 | * If FCQ is set in the qualifier (defined in R/W cmd), then bits U0, U1, |
| 235 | * ET1 and ET2 define an external event to be checked for on event of a |
| 236 | * _read_blocks or _write_blocks operation. The read/write will not take |
| 237 | * place unless the defined trigger signal is active. |
| 238 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | command[3] = external_trigger; |
| 240 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 241 | /* |
| 242 | * The resultant byte of the mask operation (see mask_byte) is compared for |
| 243 | * equivalence with this test pattern. If equal, the read/write will take |
| 244 | * place. |
| 245 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | command[4] = test_pattern; |
| 247 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 248 | /* |
| 249 | * This value is logically ANDed with the status register field specified |
| 250 | * in the read/write command. |
| 251 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 252 | command[5] = mask_byte; |
| 253 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 254 | /* |
| 255 | * If ALQ is set in the qualifier, this field contains the address of the |
| 256 | * registers where the byte count should be read for transferring the data. |
| 257 | * If ALQ is not set, then this field contains the number of bytes to be |
| 258 | * transferred. |
| 259 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | command[6] = subcountL; |
| 261 | command[7] = subcountH; |
| 262 | |
| 263 | return usbat_execute_command(us, command, 8); |
| 264 | } |
| 265 | |
| 266 | /* |
| 267 | * Block, waiting for an ATA device to become not busy or to report |
| 268 | * an error condition. |
| 269 | */ |
| 270 | static int usbat_wait_not_busy(struct us_data *us, int minutes) |
| 271 | { |
| 272 | int i; |
| 273 | int result; |
| 274 | unsigned char *status = us->iobuf; |
| 275 | |
| 276 | /* Synchronizing cache on a CDR could take a heck of a long time, |
| 277 | * but probably not more than 10 minutes or so. On the other hand, |
| 278 | * doing a full blank on a CDRW at speed 1 will take about 75 |
| 279 | * minutes! |
| 280 | */ |
| 281 | |
| 282 | for (i=0; i<1200+minutes*60; i++) { |
| 283 | |
| 284 | result = usbat_get_status(us, status); |
| 285 | |
| 286 | if (result!=USB_STOR_XFER_GOOD) |
| 287 | return USB_STOR_TRANSPORT_ERROR; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 288 | if (*status & 0x01) { /* check condition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | result = usbat_read(us, USBAT_ATA, 0x10, status); |
| 290 | return USB_STOR_TRANSPORT_FAILED; |
| 291 | } |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 292 | if (*status & 0x20) /* device fault */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 293 | return USB_STOR_TRANSPORT_FAILED; |
| 294 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 295 | if ((*status & 0x80)==0x00) { /* not busy */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 296 | US_DEBUGP("Waited not busy for %d steps\n", i); |
| 297 | return USB_STOR_TRANSPORT_GOOD; |
| 298 | } |
| 299 | |
| 300 | if (i<500) |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 301 | msleep(10); /* 5 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | else if (i<700) |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 303 | msleep(50); /* 10 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 304 | else if (i<1200) |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 305 | msleep(100); /* 50 seconds */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | else |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 307 | msleep(1000); /* X minutes */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | US_DEBUGP("Waited not busy for %d minutes, timing out.\n", |
| 311 | minutes); |
| 312 | return USB_STOR_TRANSPORT_FAILED; |
| 313 | } |
| 314 | |
| 315 | /* |
| 316 | * Read block data from the data register |
| 317 | */ |
| 318 | static int usbat_read_block(struct us_data *us, |
| 319 | unsigned char *content, |
| 320 | unsigned short len) |
| 321 | { |
| 322 | int result; |
| 323 | unsigned char *command = us->iobuf; |
| 324 | |
| 325 | if (!len) |
| 326 | return USB_STOR_TRANSPORT_GOOD; |
| 327 | |
| 328 | command[0] = 0xC0; |
| 329 | command[1] = USBAT_ATA | USBAT_CMD_READ_BLOCK; |
| 330 | command[2] = USBAT_ATA_DATA; |
| 331 | command[3] = 0; |
| 332 | command[4] = 0; |
| 333 | command[5] = 0; |
| 334 | command[6] = LSB_of(len); |
| 335 | command[7] = MSB_of(len); |
| 336 | |
| 337 | result = usbat_execute_command(us, command, 8); |
| 338 | if (result != USB_STOR_XFER_GOOD) |
| 339 | return USB_STOR_TRANSPORT_ERROR; |
| 340 | |
| 341 | result = usbat_bulk_read(us, content, len); |
| 342 | return (result == USB_STOR_XFER_GOOD ? |
| 343 | USB_STOR_TRANSPORT_GOOD : USB_STOR_TRANSPORT_ERROR); |
| 344 | } |
| 345 | |
| 346 | /* |
| 347 | * Write block data via the data register |
| 348 | */ |
| 349 | static int usbat_write_block(struct us_data *us, |
| 350 | unsigned char access, |
| 351 | unsigned char *content, |
| 352 | unsigned short len, |
| 353 | int minutes) |
| 354 | { |
| 355 | int result; |
| 356 | unsigned char *command = us->iobuf; |
| 357 | |
| 358 | if (!len) |
| 359 | return USB_STOR_TRANSPORT_GOOD; |
| 360 | |
| 361 | command[0] = 0x40; |
| 362 | command[1] = access | USBAT_CMD_WRITE_BLOCK; |
| 363 | command[2] = USBAT_ATA_DATA; |
| 364 | command[3] = 0; |
| 365 | command[4] = 0; |
| 366 | command[5] = 0; |
| 367 | command[6] = LSB_of(len); |
| 368 | command[7] = MSB_of(len); |
| 369 | |
| 370 | result = usbat_execute_command(us, command, 8); |
| 371 | |
| 372 | if (result != USB_STOR_XFER_GOOD) |
| 373 | return USB_STOR_TRANSPORT_ERROR; |
| 374 | |
| 375 | result = usbat_bulk_write(us, content, len); |
| 376 | if (result != USB_STOR_XFER_GOOD) |
| 377 | return USB_STOR_TRANSPORT_ERROR; |
| 378 | |
| 379 | return usbat_wait_not_busy(us, minutes); |
| 380 | } |
| 381 | |
| 382 | /* |
| 383 | * Process read and write requests |
| 384 | */ |
| 385 | static int usbat_hp8200e_rw_block_test(struct us_data *us, |
| 386 | unsigned char access, |
| 387 | unsigned char *registers, |
| 388 | unsigned char *data_out, |
| 389 | unsigned short num_registers, |
| 390 | unsigned char data_reg, |
| 391 | unsigned char status_reg, |
| 392 | unsigned char timeout, |
| 393 | unsigned char qualifier, |
| 394 | int direction, |
| 395 | unsigned char *content, |
| 396 | unsigned short len, |
| 397 | int use_sg, |
| 398 | int minutes) |
| 399 | { |
| 400 | int result; |
| 401 | unsigned int pipe = (direction == DMA_FROM_DEVICE) ? |
| 402 | us->recv_bulk_pipe : us->send_bulk_pipe; |
| 403 | |
| 404 | unsigned char *command = us->iobuf; |
| 405 | int i, j; |
| 406 | int cmdlen; |
| 407 | unsigned char *data = us->iobuf; |
| 408 | unsigned char *status = us->iobuf; |
| 409 | |
| 410 | BUG_ON(num_registers > US_IOBUF_SIZE/2); |
| 411 | |
| 412 | for (i=0; i<20; i++) { |
| 413 | |
| 414 | /* |
| 415 | * The first time we send the full command, which consists |
| 416 | * of downloading the SCSI command followed by downloading |
| 417 | * the data via a write-and-test. Any other time we only |
| 418 | * send the command to download the data -- the SCSI command |
| 419 | * is still 'active' in some sense in the device. |
| 420 | * |
| 421 | * We're only going to try sending the data 10 times. After |
| 422 | * that, we just return a failure. |
| 423 | */ |
| 424 | |
| 425 | if (i==0) { |
| 426 | cmdlen = 16; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 427 | /* |
| 428 | * Write to multiple registers |
| 429 | * Not really sure the 0x07, 0x17, 0xfc, 0xe7 is |
| 430 | * necessary here, but that's what came out of the |
| 431 | * trace every single time. |
| 432 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 433 | command[0] = 0x40; |
| 434 | command[1] = access | USBAT_CMD_WRITE_REGS; |
| 435 | command[2] = 0x07; |
| 436 | command[3] = 0x17; |
| 437 | command[4] = 0xFC; |
| 438 | command[5] = 0xE7; |
| 439 | command[6] = LSB_of(num_registers*2); |
| 440 | command[7] = MSB_of(num_registers*2); |
| 441 | } else |
| 442 | cmdlen = 8; |
| 443 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 444 | /* Conditionally read or write blocks */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 445 | command[cmdlen-8] = (direction==DMA_TO_DEVICE ? 0x40 : 0xC0); |
| 446 | command[cmdlen-7] = access | |
| 447 | (direction==DMA_TO_DEVICE ? |
| 448 | USBAT_CMD_COND_WRITE_BLOCK : USBAT_CMD_COND_READ_BLOCK); |
| 449 | command[cmdlen-6] = data_reg; |
| 450 | command[cmdlen-5] = status_reg; |
| 451 | command[cmdlen-4] = timeout; |
| 452 | command[cmdlen-3] = qualifier; |
| 453 | command[cmdlen-2] = LSB_of(len); |
| 454 | command[cmdlen-1] = MSB_of(len); |
| 455 | |
| 456 | result = usbat_execute_command(us, command, cmdlen); |
| 457 | |
| 458 | if (result != USB_STOR_XFER_GOOD) |
| 459 | return USB_STOR_TRANSPORT_ERROR; |
| 460 | |
| 461 | if (i==0) { |
| 462 | |
| 463 | for (j=0; j<num_registers; j++) { |
| 464 | data[j<<1] = registers[j]; |
| 465 | data[1+(j<<1)] = data_out[j]; |
| 466 | } |
| 467 | |
| 468 | result = usbat_bulk_write(us, data, num_registers*2); |
| 469 | if (result != USB_STOR_XFER_GOOD) |
| 470 | return USB_STOR_TRANSPORT_ERROR; |
| 471 | |
| 472 | } |
| 473 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 474 | result = usb_stor_bulk_transfer_sg(us, |
| 475 | pipe, content, len, use_sg, NULL); |
| 476 | |
| 477 | /* |
| 478 | * If we get a stall on the bulk download, we'll retry |
| 479 | * the bulk download -- but not the SCSI command because |
| 480 | * in some sense the SCSI command is still 'active' and |
| 481 | * waiting for the data. Don't ask me why this should be; |
| 482 | * I'm only following what the Windoze driver did. |
| 483 | * |
| 484 | * Note that a stall for the test-and-read/write command means |
| 485 | * that the test failed. In this case we're testing to make |
| 486 | * sure that the device is error-free |
| 487 | * (i.e. bit 0 -- CHK -- of status is 0). The most likely |
| 488 | * hypothesis is that the USBAT chip somehow knows what |
| 489 | * the device will accept, but doesn't give the device any |
| 490 | * data until all data is received. Thus, the device would |
| 491 | * still be waiting for the first byte of data if a stall |
| 492 | * occurs, even if the stall implies that some data was |
| 493 | * transferred. |
| 494 | */ |
| 495 | |
| 496 | if (result == USB_STOR_XFER_SHORT || |
| 497 | result == USB_STOR_XFER_STALLED) { |
| 498 | |
| 499 | /* |
| 500 | * If we're reading and we stalled, then clear |
| 501 | * the bulk output pipe only the first time. |
| 502 | */ |
| 503 | |
| 504 | if (direction==DMA_FROM_DEVICE && i==0) { |
| 505 | if (usb_stor_clear_halt(us, |
| 506 | us->send_bulk_pipe) < 0) |
| 507 | return USB_STOR_TRANSPORT_ERROR; |
| 508 | } |
| 509 | |
| 510 | /* |
| 511 | * Read status: is the device angry, or just busy? |
| 512 | */ |
| 513 | |
| 514 | result = usbat_read(us, USBAT_ATA, |
| 515 | direction==DMA_TO_DEVICE ? |
| 516 | USBAT_ATA_STATUS : USBAT_ATA_ALTSTATUS, |
| 517 | status); |
| 518 | |
| 519 | if (result!=USB_STOR_XFER_GOOD) |
| 520 | return USB_STOR_TRANSPORT_ERROR; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 521 | if (*status & 0x01) /* check condition */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | return USB_STOR_TRANSPORT_FAILED; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 523 | if (*status & 0x20) /* device fault */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 524 | return USB_STOR_TRANSPORT_FAILED; |
| 525 | |
| 526 | US_DEBUGP("Redoing %s\n", |
| 527 | direction==DMA_TO_DEVICE ? "write" : "read"); |
| 528 | |
| 529 | } else if (result != USB_STOR_XFER_GOOD) |
| 530 | return USB_STOR_TRANSPORT_ERROR; |
| 531 | else |
| 532 | return usbat_wait_not_busy(us, minutes); |
| 533 | |
| 534 | } |
| 535 | |
| 536 | US_DEBUGP("Bummer! %s bulk data 20 times failed.\n", |
| 537 | direction==DMA_TO_DEVICE ? "Writing" : "Reading"); |
| 538 | |
| 539 | return USB_STOR_TRANSPORT_FAILED; |
| 540 | } |
| 541 | |
| 542 | /* |
| 543 | * Write to multiple registers: |
| 544 | * Allows us to write specific data to any registers. The data to be written |
| 545 | * gets packed in this sequence: reg0, data0, reg1, data1, ..., regN, dataN |
| 546 | * which gets sent through bulk out. |
| 547 | * Not designed for large transfers of data! |
| 548 | */ |
| 549 | static int usbat_multiple_write(struct us_data *us, |
| 550 | unsigned char *registers, |
| 551 | unsigned char *data_out, |
| 552 | unsigned short num_registers) |
| 553 | { |
| 554 | int i, result; |
| 555 | unsigned char *data = us->iobuf; |
| 556 | unsigned char *command = us->iobuf; |
| 557 | |
| 558 | BUG_ON(num_registers > US_IOBUF_SIZE/2); |
| 559 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 560 | /* Write to multiple registers, ATA access */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | command[0] = 0x40; |
| 562 | command[1] = USBAT_ATA | USBAT_CMD_WRITE_REGS; |
| 563 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 564 | /* No relevance */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 565 | command[2] = 0; |
| 566 | command[3] = 0; |
| 567 | command[4] = 0; |
| 568 | command[5] = 0; |
| 569 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 570 | /* Number of bytes to be transferred (incl. addresses and data) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 571 | command[6] = LSB_of(num_registers*2); |
| 572 | command[7] = MSB_of(num_registers*2); |
| 573 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 574 | /* The setup command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | result = usbat_execute_command(us, command, 8); |
| 576 | if (result != USB_STOR_XFER_GOOD) |
| 577 | return USB_STOR_TRANSPORT_ERROR; |
| 578 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 579 | /* Create the reg/data, reg/data sequence */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 580 | for (i=0; i<num_registers; i++) { |
| 581 | data[i<<1] = registers[i]; |
| 582 | data[1+(i<<1)] = data_out[i]; |
| 583 | } |
| 584 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 585 | /* Send the data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 586 | result = usbat_bulk_write(us, data, num_registers*2); |
| 587 | if (result != USB_STOR_XFER_GOOD) |
| 588 | return USB_STOR_TRANSPORT_ERROR; |
| 589 | |
| 590 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) |
| 591 | return usbat_wait_not_busy(us, 0); |
| 592 | else |
| 593 | return USB_STOR_TRANSPORT_GOOD; |
| 594 | } |
| 595 | |
| 596 | /* |
| 597 | * Conditionally read blocks from device: |
| 598 | * Allows us to read blocks from a specific data register, based upon the |
| 599 | * condition that a status register can be successfully masked with a status |
| 600 | * qualifier. If this condition is not initially met, the read will wait |
| 601 | * up until a maximum amount of time has elapsed, as specified by timeout. |
| 602 | * The read will start when the condition is met, otherwise the command aborts. |
| 603 | * |
| 604 | * The qualifier defined here is not the value that is masked, it defines |
| 605 | * conditions for the write to take place. The actual masked qualifier (and |
| 606 | * other related details) are defined beforehand with _set_shuttle_features(). |
| 607 | */ |
| 608 | static int usbat_read_blocks(struct us_data *us, |
| 609 | unsigned char *buffer, |
| 610 | int len) |
| 611 | { |
| 612 | int result; |
| 613 | unsigned char *command = us->iobuf; |
| 614 | |
| 615 | command[0] = 0xC0; |
| 616 | command[1] = USBAT_ATA | USBAT_CMD_COND_READ_BLOCK; |
| 617 | command[2] = USBAT_ATA_DATA; |
| 618 | command[3] = USBAT_ATA_STATUS; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 619 | command[4] = 0xFD; /* Timeout (ms); */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 620 | command[5] = USBAT_QUAL_FCQ; |
| 621 | command[6] = LSB_of(len); |
| 622 | command[7] = MSB_of(len); |
| 623 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 624 | /* Multiple block read setup command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 625 | result = usbat_execute_command(us, command, 8); |
| 626 | if (result != USB_STOR_XFER_GOOD) |
| 627 | return USB_STOR_TRANSPORT_FAILED; |
| 628 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 629 | /* Read the blocks we just asked for */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 630 | result = usbat_bulk_read(us, buffer, len); |
| 631 | if (result != USB_STOR_XFER_GOOD) |
| 632 | return USB_STOR_TRANSPORT_FAILED; |
| 633 | |
| 634 | return USB_STOR_TRANSPORT_GOOD; |
| 635 | } |
| 636 | |
| 637 | /* |
| 638 | * Conditionally write blocks to device: |
| 639 | * Allows us to write blocks to a specific data register, based upon the |
| 640 | * condition that a status register can be successfully masked with a status |
| 641 | * qualifier. If this condition is not initially met, the write will wait |
| 642 | * up until a maximum amount of time has elapsed, as specified by timeout. |
| 643 | * The read will start when the condition is met, otherwise the command aborts. |
| 644 | * |
| 645 | * The qualifier defined here is not the value that is masked, it defines |
| 646 | * conditions for the write to take place. The actual masked qualifier (and |
| 647 | * other related details) are defined beforehand with _set_shuttle_features(). |
| 648 | */ |
| 649 | static int usbat_write_blocks(struct us_data *us, |
| 650 | unsigned char *buffer, |
| 651 | int len) |
| 652 | { |
| 653 | int result; |
| 654 | unsigned char *command = us->iobuf; |
| 655 | |
| 656 | command[0] = 0x40; |
| 657 | command[1] = USBAT_ATA | USBAT_CMD_COND_WRITE_BLOCK; |
| 658 | command[2] = USBAT_ATA_DATA; |
| 659 | command[3] = USBAT_ATA_STATUS; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 660 | command[4] = 0xFD; /* Timeout (ms) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 661 | command[5] = USBAT_QUAL_FCQ; |
| 662 | command[6] = LSB_of(len); |
| 663 | command[7] = MSB_of(len); |
| 664 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 665 | /* Multiple block write setup command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 666 | result = usbat_execute_command(us, command, 8); |
| 667 | if (result != USB_STOR_XFER_GOOD) |
| 668 | return USB_STOR_TRANSPORT_FAILED; |
| 669 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 670 | /* Write the data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 671 | result = usbat_bulk_write(us, buffer, len); |
| 672 | if (result != USB_STOR_XFER_GOOD) |
| 673 | return USB_STOR_TRANSPORT_FAILED; |
| 674 | |
| 675 | return USB_STOR_TRANSPORT_GOOD; |
| 676 | } |
| 677 | |
| 678 | /* |
| 679 | * Read the User IO register |
| 680 | */ |
| 681 | static int usbat_read_user_io(struct us_data *us, unsigned char *data_flags) |
| 682 | { |
| 683 | int result; |
| 684 | |
| 685 | result = usb_stor_ctrl_transfer(us, |
| 686 | us->recv_ctrl_pipe, |
| 687 | USBAT_CMD_UIO, |
| 688 | 0xC0, |
| 689 | 0, |
| 690 | 0, |
| 691 | data_flags, |
| 692 | USBAT_UIO_READ); |
| 693 | |
| 694 | US_DEBUGP("usbat_read_user_io: UIO register reads %02X\n", (unsigned short) (*data_flags)); |
| 695 | |
| 696 | return result; |
| 697 | } |
| 698 | |
| 699 | /* |
| 700 | * Write to the User IO register |
| 701 | */ |
| 702 | static int usbat_write_user_io(struct us_data *us, |
| 703 | unsigned char enable_flags, |
| 704 | unsigned char data_flags) |
| 705 | { |
| 706 | return usb_stor_ctrl_transfer(us, |
| 707 | us->send_ctrl_pipe, |
| 708 | USBAT_CMD_UIO, |
| 709 | 0x40, |
| 710 | short_pack(enable_flags, data_flags), |
| 711 | 0, |
| 712 | NULL, |
| 713 | USBAT_UIO_WRITE); |
| 714 | } |
| 715 | |
| 716 | /* |
| 717 | * Reset the device |
| 718 | * Often needed on media change. |
| 719 | */ |
| 720 | static int usbat_device_reset(struct us_data *us) |
| 721 | { |
| 722 | int rc; |
| 723 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 724 | /* |
| 725 | * Reset peripheral, enable peripheral control signals |
| 726 | * (bring reset signal up) |
| 727 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 728 | rc = usbat_write_user_io(us, |
| 729 | USBAT_UIO_DRVRST | USBAT_UIO_OE1 | USBAT_UIO_OE0, |
| 730 | USBAT_UIO_EPAD | USBAT_UIO_1); |
| 731 | if (rc != USB_STOR_XFER_GOOD) |
| 732 | return USB_STOR_TRANSPORT_ERROR; |
| 733 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 734 | /* |
| 735 | * Enable peripheral control signals |
| 736 | * (bring reset signal down) |
| 737 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 738 | rc = usbat_write_user_io(us, |
| 739 | USBAT_UIO_OE1 | USBAT_UIO_OE0, |
| 740 | USBAT_UIO_EPAD | USBAT_UIO_1); |
| 741 | if (rc != USB_STOR_XFER_GOOD) |
| 742 | return USB_STOR_TRANSPORT_ERROR; |
| 743 | |
| 744 | return USB_STOR_TRANSPORT_GOOD; |
| 745 | } |
| 746 | |
| 747 | /* |
| 748 | * Enable card detect |
| 749 | */ |
| 750 | static int usbat_device_enable_cdt(struct us_data *us) |
| 751 | { |
| 752 | int rc; |
| 753 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 754 | /* Enable peripheral control signals and card detect */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 755 | rc = usbat_write_user_io(us, |
| 756 | USBAT_UIO_ACKD | USBAT_UIO_OE1 | USBAT_UIO_OE0, |
| 757 | USBAT_UIO_EPAD | USBAT_UIO_1); |
| 758 | if (rc != USB_STOR_XFER_GOOD) |
| 759 | return USB_STOR_TRANSPORT_ERROR; |
| 760 | |
| 761 | return USB_STOR_TRANSPORT_GOOD; |
| 762 | } |
| 763 | |
| 764 | /* |
| 765 | * Determine if media is present. |
| 766 | */ |
| 767 | static int usbat_flash_check_media_present(unsigned char *uio) |
| 768 | { |
| 769 | if (*uio & USBAT_UIO_UI0) { |
| 770 | US_DEBUGP("usbat_flash_check_media_present: no media detected\n"); |
| 771 | return USBAT_FLASH_MEDIA_NONE; |
| 772 | } |
| 773 | |
| 774 | return USBAT_FLASH_MEDIA_CF; |
| 775 | } |
| 776 | |
| 777 | /* |
| 778 | * Determine if media has changed since last operation |
| 779 | */ |
| 780 | static int usbat_flash_check_media_changed(unsigned char *uio) |
| 781 | { |
| 782 | if (*uio & USBAT_UIO_0) { |
| 783 | US_DEBUGP("usbat_flash_check_media_changed: media change detected\n"); |
| 784 | return USBAT_FLASH_MEDIA_CHANGED; |
| 785 | } |
| 786 | |
| 787 | return USBAT_FLASH_MEDIA_SAME; |
| 788 | } |
| 789 | |
| 790 | /* |
| 791 | * Check for media change / no media and handle the situation appropriately |
| 792 | */ |
| 793 | static int usbat_flash_check_media(struct us_data *us, |
| 794 | struct usbat_info *info) |
| 795 | { |
| 796 | int rc; |
| 797 | unsigned char *uio = us->iobuf; |
| 798 | |
| 799 | rc = usbat_read_user_io(us, uio); |
| 800 | if (rc != USB_STOR_XFER_GOOD) |
| 801 | return USB_STOR_TRANSPORT_ERROR; |
| 802 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 803 | /* Check for media existence */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 804 | rc = usbat_flash_check_media_present(uio); |
| 805 | if (rc == USBAT_FLASH_MEDIA_NONE) { |
| 806 | info->sense_key = 0x02; |
| 807 | info->sense_asc = 0x3A; |
| 808 | info->sense_ascq = 0x00; |
| 809 | return USB_STOR_TRANSPORT_FAILED; |
| 810 | } |
| 811 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 812 | /* Check for media change */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 813 | rc = usbat_flash_check_media_changed(uio); |
| 814 | if (rc == USBAT_FLASH_MEDIA_CHANGED) { |
| 815 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 816 | /* Reset and re-enable card detect */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 817 | rc = usbat_device_reset(us); |
| 818 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 819 | return rc; |
| 820 | rc = usbat_device_enable_cdt(us); |
| 821 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 822 | return rc; |
| 823 | |
| 824 | msleep(50); |
| 825 | |
| 826 | rc = usbat_read_user_io(us, uio); |
| 827 | if (rc != USB_STOR_XFER_GOOD) |
| 828 | return USB_STOR_TRANSPORT_ERROR; |
| 829 | |
| 830 | info->sense_key = UNIT_ATTENTION; |
| 831 | info->sense_asc = 0x28; |
| 832 | info->sense_ascq = 0x00; |
| 833 | return USB_STOR_TRANSPORT_FAILED; |
| 834 | } |
| 835 | |
| 836 | return USB_STOR_TRANSPORT_GOOD; |
| 837 | } |
| 838 | |
| 839 | /* |
| 840 | * Determine whether we are controlling a flash-based reader/writer, |
| 841 | * or a HP8200-based CD drive. |
| 842 | * Sets transport functions as appropriate. |
| 843 | */ |
| 844 | static int usbat_identify_device(struct us_data *us, |
| 845 | struct usbat_info *info) |
| 846 | { |
| 847 | int rc; |
| 848 | unsigned char status; |
| 849 | |
| 850 | if (!us || !info) |
| 851 | return USB_STOR_TRANSPORT_ERROR; |
| 852 | |
| 853 | rc = usbat_device_reset(us); |
| 854 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 855 | return rc; |
Daniel Drake | 8845add | 2005-11-17 09:48:01 -0800 | [diff] [blame] | 856 | msleep(500); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 857 | |
| 858 | /* |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 859 | * In attempt to distinguish between HP CDRW's and Flash readers, we now |
| 860 | * execute the IDENTIFY PACKET DEVICE command. On ATA devices (i.e. flash |
| 861 | * readers), this command should fail with error. On ATAPI devices (i.e. |
| 862 | * CDROM drives), it should succeed. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 863 | */ |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 864 | rc = usbat_write(us, USBAT_ATA, USBAT_ATA_CMD, 0xA1); |
| 865 | if (rc != USB_STOR_XFER_GOOD) |
| 866 | return USB_STOR_TRANSPORT_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 867 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 868 | rc = usbat_get_status(us, &status); |
| 869 | if (rc != USB_STOR_XFER_GOOD) |
| 870 | return USB_STOR_TRANSPORT_ERROR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 871 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 872 | /* Check for error bit, or if the command 'fell through' */ |
Daniel Drake | a879853 | 2005-09-29 00:14:21 +0100 | [diff] [blame] | 873 | if (status == 0xA1 || !(status & 0x01)) { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 874 | /* Device is HP 8200 */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 875 | US_DEBUGP("usbat_identify_device: Detected HP8200 CDRW\n"); |
| 876 | info->devicetype = USBAT_DEV_HP8200; |
Daniel Drake | a879853 | 2005-09-29 00:14:21 +0100 | [diff] [blame] | 877 | } else { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 878 | /* Device is a CompactFlash reader/writer */ |
Daniel Drake | a879853 | 2005-09-29 00:14:21 +0100 | [diff] [blame] | 879 | US_DEBUGP("usbat_identify_device: Detected Flash reader/writer\n"); |
| 880 | info->devicetype = USBAT_DEV_FLASH; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 881 | } |
| 882 | |
| 883 | return USB_STOR_TRANSPORT_GOOD; |
| 884 | } |
| 885 | |
| 886 | /* |
| 887 | * Set the transport function based on the device type |
| 888 | */ |
| 889 | static int usbat_set_transport(struct us_data *us, |
| 890 | struct usbat_info *info) |
| 891 | { |
| 892 | int rc; |
| 893 | |
| 894 | if (!info->devicetype) { |
| 895 | rc = usbat_identify_device(us, info); |
| 896 | if (rc != USB_STOR_TRANSPORT_GOOD) { |
| 897 | US_DEBUGP("usbat_set_transport: Could not identify device\n"); |
| 898 | return 1; |
| 899 | } |
| 900 | } |
| 901 | |
| 902 | if (usbat_get_device_type(us) == USBAT_DEV_HP8200) |
| 903 | us->transport = usbat_hp8200e_transport; |
| 904 | else if (usbat_get_device_type(us) == USBAT_DEV_FLASH) |
| 905 | us->transport = usbat_flash_transport; |
| 906 | |
| 907 | return 0; |
| 908 | } |
| 909 | |
| 910 | /* |
| 911 | * Read the media capacity |
| 912 | */ |
| 913 | static int usbat_flash_get_sector_count(struct us_data *us, |
| 914 | struct usbat_info *info) |
| 915 | { |
| 916 | unsigned char registers[3] = { |
| 917 | USBAT_ATA_SECCNT, |
| 918 | USBAT_ATA_DEVICE, |
| 919 | USBAT_ATA_CMD, |
| 920 | }; |
| 921 | unsigned char command[3] = { 0x01, 0xA0, 0xEC }; |
| 922 | unsigned char *reply; |
| 923 | unsigned char status; |
| 924 | int rc; |
| 925 | |
| 926 | if (!us || !info) |
| 927 | return USB_STOR_TRANSPORT_ERROR; |
| 928 | |
| 929 | reply = kmalloc(512, GFP_NOIO); |
| 930 | if (!reply) |
| 931 | return USB_STOR_TRANSPORT_ERROR; |
| 932 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 933 | /* ATA command : IDENTIFY DEVICE */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 934 | rc = usbat_multiple_write(us, registers, command, 3); |
| 935 | if (rc != USB_STOR_XFER_GOOD) { |
| 936 | US_DEBUGP("usbat_flash_get_sector_count: Gah! identify_device failed\n"); |
| 937 | rc = USB_STOR_TRANSPORT_ERROR; |
| 938 | goto leave; |
| 939 | } |
| 940 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 941 | /* Read device status */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 942 | if (usbat_get_status(us, &status) != USB_STOR_XFER_GOOD) { |
| 943 | rc = USB_STOR_TRANSPORT_ERROR; |
| 944 | goto leave; |
| 945 | } |
| 946 | |
| 947 | msleep(100); |
| 948 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 949 | /* Read the device identification data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | rc = usbat_read_block(us, reply, 512); |
| 951 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 952 | goto leave; |
| 953 | |
| 954 | info->sectors = ((u32)(reply[117]) << 24) | |
| 955 | ((u32)(reply[116]) << 16) | |
| 956 | ((u32)(reply[115]) << 8) | |
| 957 | ((u32)(reply[114]) ); |
| 958 | |
| 959 | rc = USB_STOR_TRANSPORT_GOOD; |
| 960 | |
| 961 | leave: |
| 962 | kfree(reply); |
| 963 | return rc; |
| 964 | } |
| 965 | |
| 966 | /* |
| 967 | * Read data from device |
| 968 | */ |
| 969 | static int usbat_flash_read_data(struct us_data *us, |
| 970 | struct usbat_info *info, |
| 971 | u32 sector, |
| 972 | u32 sectors) |
| 973 | { |
| 974 | unsigned char registers[7] = { |
| 975 | USBAT_ATA_FEATURES, |
| 976 | USBAT_ATA_SECCNT, |
| 977 | USBAT_ATA_SECNUM, |
| 978 | USBAT_ATA_LBA_ME, |
| 979 | USBAT_ATA_LBA_HI, |
| 980 | USBAT_ATA_DEVICE, |
| 981 | USBAT_ATA_STATUS, |
| 982 | }; |
| 983 | unsigned char command[7]; |
| 984 | unsigned char *buffer; |
| 985 | unsigned char thistime; |
| 986 | unsigned int totallen, alloclen; |
| 987 | int len, result; |
| 988 | unsigned int sg_idx = 0, sg_offset = 0; |
| 989 | |
| 990 | result = usbat_flash_check_media(us, info); |
| 991 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 992 | return result; |
| 993 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 994 | /* |
| 995 | * we're working in LBA mode. according to the ATA spec, |
| 996 | * we can support up to 28-bit addressing. I don't know if Jumpshot |
| 997 | * supports beyond 24-bit addressing. It's kind of hard to test |
| 998 | * since it requires > 8GB CF card. |
| 999 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1000 | |
| 1001 | if (sector > 0x0FFFFFFF) |
| 1002 | return USB_STOR_TRANSPORT_ERROR; |
| 1003 | |
| 1004 | totallen = sectors * info->ssize; |
| 1005 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1006 | /* |
| 1007 | * Since we don't read more than 64 KB at a time, we have to create |
| 1008 | * a bounce buffer and move the data a piece at a time between the |
| 1009 | * bounce buffer and the actual transfer buffer. |
| 1010 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1011 | |
| 1012 | alloclen = min(totallen, 65536u); |
| 1013 | buffer = kmalloc(alloclen, GFP_NOIO); |
| 1014 | if (buffer == NULL) |
| 1015 | return USB_STOR_TRANSPORT_ERROR; |
| 1016 | |
| 1017 | do { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1018 | /* |
| 1019 | * loop, never allocate or transfer more than 64k at once |
| 1020 | * (min(128k, 255*info->ssize) is the real limit) |
| 1021 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1022 | len = min(totallen, alloclen); |
| 1023 | thistime = (len / info->ssize) & 0xff; |
| 1024 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1025 | /* ATA command 0x20 (READ SECTORS) */ |
| 1026 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x20); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1027 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1028 | /* Write/execute ATA read command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1029 | result = usbat_multiple_write(us, registers, command, 7); |
| 1030 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1031 | goto leave; |
| 1032 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1033 | /* Read the data we just requested */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1034 | result = usbat_read_blocks(us, buffer, len); |
| 1035 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1036 | goto leave; |
| 1037 | |
| 1038 | US_DEBUGP("usbat_flash_read_data: %d bytes\n", len); |
| 1039 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1040 | /* Store the data in the transfer buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1041 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
| 1042 | &sg_idx, &sg_offset, TO_XFER_BUF); |
| 1043 | |
| 1044 | sector += thistime; |
| 1045 | totallen -= len; |
| 1046 | } while (totallen > 0); |
| 1047 | |
| 1048 | kfree(buffer); |
| 1049 | return USB_STOR_TRANSPORT_GOOD; |
| 1050 | |
| 1051 | leave: |
| 1052 | kfree(buffer); |
| 1053 | return USB_STOR_TRANSPORT_ERROR; |
| 1054 | } |
| 1055 | |
| 1056 | /* |
| 1057 | * Write data to device |
| 1058 | */ |
| 1059 | static int usbat_flash_write_data(struct us_data *us, |
| 1060 | struct usbat_info *info, |
| 1061 | u32 sector, |
| 1062 | u32 sectors) |
| 1063 | { |
| 1064 | unsigned char registers[7] = { |
| 1065 | USBAT_ATA_FEATURES, |
| 1066 | USBAT_ATA_SECCNT, |
| 1067 | USBAT_ATA_SECNUM, |
| 1068 | USBAT_ATA_LBA_ME, |
| 1069 | USBAT_ATA_LBA_HI, |
| 1070 | USBAT_ATA_DEVICE, |
| 1071 | USBAT_ATA_STATUS, |
| 1072 | }; |
| 1073 | unsigned char command[7]; |
| 1074 | unsigned char *buffer; |
| 1075 | unsigned char thistime; |
| 1076 | unsigned int totallen, alloclen; |
| 1077 | int len, result; |
| 1078 | unsigned int sg_idx = 0, sg_offset = 0; |
| 1079 | |
| 1080 | result = usbat_flash_check_media(us, info); |
| 1081 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1082 | return result; |
| 1083 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1084 | /* |
| 1085 | * we're working in LBA mode. according to the ATA spec, |
| 1086 | * we can support up to 28-bit addressing. I don't know if the device |
| 1087 | * supports beyond 24-bit addressing. It's kind of hard to test |
| 1088 | * since it requires > 8GB media. |
| 1089 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1090 | |
| 1091 | if (sector > 0x0FFFFFFF) |
| 1092 | return USB_STOR_TRANSPORT_ERROR; |
| 1093 | |
| 1094 | totallen = sectors * info->ssize; |
| 1095 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1096 | /* |
| 1097 | * Since we don't write more than 64 KB at a time, we have to create |
| 1098 | * a bounce buffer and move the data a piece at a time between the |
| 1099 | * bounce buffer and the actual transfer buffer. |
| 1100 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1101 | |
| 1102 | alloclen = min(totallen, 65536u); |
| 1103 | buffer = kmalloc(alloclen, GFP_NOIO); |
| 1104 | if (buffer == NULL) |
| 1105 | return USB_STOR_TRANSPORT_ERROR; |
| 1106 | |
| 1107 | do { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1108 | /* |
| 1109 | * loop, never allocate or transfer more than 64k at once |
| 1110 | * (min(128k, 255*info->ssize) is the real limit) |
| 1111 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1112 | len = min(totallen, alloclen); |
| 1113 | thistime = (len / info->ssize) & 0xff; |
| 1114 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1115 | /* Get the data from the transfer buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1116 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
| 1117 | &sg_idx, &sg_offset, FROM_XFER_BUF); |
| 1118 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1119 | /* ATA command 0x30 (WRITE SECTORS) */ |
| 1120 | usbat_pack_ata_sector_cmd(command, thistime, sector, 0x30); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1121 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1122 | /* Write/execute ATA write command */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1123 | result = usbat_multiple_write(us, registers, command, 7); |
| 1124 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1125 | goto leave; |
| 1126 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1127 | /* Write the data */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1128 | result = usbat_write_blocks(us, buffer, len); |
| 1129 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1130 | goto leave; |
| 1131 | |
| 1132 | sector += thistime; |
| 1133 | totallen -= len; |
| 1134 | } while (totallen > 0); |
| 1135 | |
| 1136 | kfree(buffer); |
| 1137 | return result; |
| 1138 | |
| 1139 | leave: |
| 1140 | kfree(buffer); |
| 1141 | return USB_STOR_TRANSPORT_ERROR; |
| 1142 | } |
| 1143 | |
| 1144 | /* |
| 1145 | * Squeeze a potentially huge (> 65535 byte) read10 command into |
| 1146 | * a little ( <= 65535 byte) ATAPI pipe |
| 1147 | */ |
| 1148 | static int usbat_hp8200e_handle_read10(struct us_data *us, |
| 1149 | unsigned char *registers, |
| 1150 | unsigned char *data, |
| 1151 | struct scsi_cmnd *srb) |
| 1152 | { |
| 1153 | int result = USB_STOR_TRANSPORT_GOOD; |
| 1154 | unsigned char *buffer; |
| 1155 | unsigned int len; |
| 1156 | unsigned int sector; |
| 1157 | unsigned int sg_segment = 0; |
| 1158 | unsigned int sg_offset = 0; |
| 1159 | |
| 1160 | US_DEBUGP("handle_read10: transfersize %d\n", |
| 1161 | srb->transfersize); |
| 1162 | |
| 1163 | if (srb->request_bufflen < 0x10000) { |
| 1164 | |
| 1165 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, |
| 1166 | registers, data, 19, |
| 1167 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, |
| 1168 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), |
| 1169 | DMA_FROM_DEVICE, |
| 1170 | srb->request_buffer, |
| 1171 | srb->request_bufflen, srb->use_sg, 1); |
| 1172 | |
| 1173 | return result; |
| 1174 | } |
| 1175 | |
| 1176 | /* |
| 1177 | * Since we're requesting more data than we can handle in |
| 1178 | * a single read command (max is 64k-1), we will perform |
| 1179 | * multiple reads, but each read must be in multiples of |
| 1180 | * a sector. Luckily the sector size is in srb->transfersize |
| 1181 | * (see linux/drivers/scsi/sr.c). |
| 1182 | */ |
| 1183 | |
| 1184 | if (data[7+0] == GPCMD_READ_CD) { |
| 1185 | len = short_pack(data[7+9], data[7+8]); |
| 1186 | len <<= 16; |
| 1187 | len |= data[7+7]; |
| 1188 | US_DEBUGP("handle_read10: GPCMD_READ_CD: len %d\n", len); |
| 1189 | srb->transfersize = srb->request_bufflen/len; |
| 1190 | } |
| 1191 | |
| 1192 | if (!srb->transfersize) { |
| 1193 | srb->transfersize = 2048; /* A guess */ |
| 1194 | US_DEBUGP("handle_read10: transfersize 0, forcing %d\n", |
| 1195 | srb->transfersize); |
| 1196 | } |
| 1197 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1198 | /* |
| 1199 | * Since we only read in one block at a time, we have to create |
| 1200 | * a bounce buffer and move the data a piece at a time between the |
| 1201 | * bounce buffer and the actual transfer buffer. |
| 1202 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1203 | |
| 1204 | len = (65535/srb->transfersize) * srb->transfersize; |
| 1205 | US_DEBUGP("Max read is %d bytes\n", len); |
| 1206 | len = min(len, srb->request_bufflen); |
| 1207 | buffer = kmalloc(len, GFP_NOIO); |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1208 | if (buffer == NULL) /* bloody hell! */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1209 | return USB_STOR_TRANSPORT_FAILED; |
| 1210 | sector = short_pack(data[7+3], data[7+2]); |
| 1211 | sector <<= 16; |
| 1212 | sector |= short_pack(data[7+5], data[7+4]); |
| 1213 | transferred = 0; |
| 1214 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1215 | sg_segment = 0; /* for keeping track of where we are in */ |
| 1216 | sg_offset = 0; /* the scatter/gather list */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | |
| 1218 | while (transferred != srb->request_bufflen) { |
| 1219 | |
| 1220 | if (len > srb->request_bufflen - transferred) |
| 1221 | len = srb->request_bufflen - transferred; |
| 1222 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1223 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
| 1224 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1225 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1226 | /* Fix up the SCSI command sector and num sectors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1227 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1228 | data[7+2] = MSB_of(sector>>16); /* SCSI command sector */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | data[7+3] = LSB_of(sector>>16); |
| 1230 | data[7+4] = MSB_of(sector&0xFFFF); |
| 1231 | data[7+5] = LSB_of(sector&0xFFFF); |
| 1232 | if (data[7+0] == GPCMD_READ_CD) |
| 1233 | data[7+6] = 0; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1234 | data[7+7] = MSB_of(len / srb->transfersize); /* SCSI command */ |
| 1235 | data[7+8] = LSB_of(len / srb->transfersize); /* num sectors */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1236 | |
| 1237 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, |
| 1238 | registers, data, 19, |
| 1239 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, |
| 1240 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), |
| 1241 | DMA_FROM_DEVICE, |
| 1242 | buffer, |
| 1243 | len, 0, 1); |
| 1244 | |
| 1245 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 1246 | break; |
| 1247 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1248 | /* Store the data in the transfer buffer */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1249 | usb_stor_access_xfer_buf(buffer, len, srb, |
| 1250 | &sg_segment, &sg_offset, TO_XFER_BUF); |
| 1251 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1252 | /* Update the amount transferred and the sector number */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1253 | |
| 1254 | transferred += len; |
| 1255 | sector += len / srb->transfersize; |
| 1256 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1257 | } /* while transferred != srb->request_bufflen */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1258 | |
| 1259 | kfree(buffer); |
| 1260 | return result; |
| 1261 | } |
| 1262 | |
| 1263 | static int usbat_select_and_test_registers(struct us_data *us) |
| 1264 | { |
| 1265 | int selector; |
| 1266 | unsigned char *status = us->iobuf; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1267 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1268 | /* try device = master, then device = slave. */ |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1269 | for (selector = 0xA0; selector <= 0xB0; selector += 0x10) { |
| 1270 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_DEVICE, selector) != |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1271 | USB_STOR_XFER_GOOD) |
| 1272 | return USB_STOR_TRANSPORT_ERROR; |
| 1273 | |
| 1274 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_STATUS, status) != |
| 1275 | USB_STOR_XFER_GOOD) |
| 1276 | return USB_STOR_TRANSPORT_ERROR; |
| 1277 | |
| 1278 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_DEVICE, status) != |
| 1279 | USB_STOR_XFER_GOOD) |
| 1280 | return USB_STOR_TRANSPORT_ERROR; |
| 1281 | |
| 1282 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != |
| 1283 | USB_STOR_XFER_GOOD) |
| 1284 | return USB_STOR_TRANSPORT_ERROR; |
| 1285 | |
| 1286 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != |
| 1287 | USB_STOR_XFER_GOOD) |
| 1288 | return USB_STOR_TRANSPORT_ERROR; |
| 1289 | |
| 1290 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_ME, 0x55) != |
| 1291 | USB_STOR_XFER_GOOD) |
| 1292 | return USB_STOR_TRANSPORT_ERROR; |
| 1293 | |
| 1294 | if (usbat_write(us, USBAT_ATA, USBAT_ATA_LBA_HI, 0xAA) != |
| 1295 | USB_STOR_XFER_GOOD) |
| 1296 | return USB_STOR_TRANSPORT_ERROR; |
| 1297 | |
| 1298 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != |
| 1299 | USB_STOR_XFER_GOOD) |
| 1300 | return USB_STOR_TRANSPORT_ERROR; |
| 1301 | |
| 1302 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != |
| 1303 | USB_STOR_XFER_GOOD) |
| 1304 | return USB_STOR_TRANSPORT_ERROR; |
| 1305 | } |
| 1306 | |
| 1307 | return USB_STOR_TRANSPORT_GOOD; |
| 1308 | } |
| 1309 | |
| 1310 | /* |
| 1311 | * Initialize the USBAT processor and the storage device |
| 1312 | */ |
| 1313 | int init_usbat(struct us_data *us) |
| 1314 | { |
| 1315 | int rc; |
| 1316 | struct usbat_info *info; |
| 1317 | unsigned char subcountH = USBAT_ATA_LBA_HI; |
| 1318 | unsigned char subcountL = USBAT_ATA_LBA_ME; |
| 1319 | unsigned char *status = us->iobuf; |
| 1320 | |
Oliver Neukum | 887c256 | 2006-01-08 12:33:45 +0100 | [diff] [blame] | 1321 | us->extra = kzalloc(sizeof(struct usbat_info), GFP_NOIO); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | if (!us->extra) { |
| 1323 | US_DEBUGP("init_usbat: Gah! Can't allocate storage for usbat info struct!\n"); |
| 1324 | return 1; |
| 1325 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1326 | info = (struct usbat_info *) (us->extra); |
| 1327 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1328 | /* Enable peripheral control signals */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1329 | rc = usbat_write_user_io(us, |
| 1330 | USBAT_UIO_OE1 | USBAT_UIO_OE0, |
| 1331 | USBAT_UIO_EPAD | USBAT_UIO_1); |
| 1332 | if (rc != USB_STOR_XFER_GOOD) |
| 1333 | return USB_STOR_TRANSPORT_ERROR; |
| 1334 | |
| 1335 | US_DEBUGP("INIT 1\n"); |
| 1336 | |
| 1337 | msleep(2000); |
| 1338 | |
| 1339 | rc = usbat_read_user_io(us, status); |
| 1340 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1341 | return rc; |
| 1342 | |
| 1343 | US_DEBUGP("INIT 2\n"); |
| 1344 | |
| 1345 | rc = usbat_read_user_io(us, status); |
| 1346 | if (rc != USB_STOR_XFER_GOOD) |
| 1347 | return USB_STOR_TRANSPORT_ERROR; |
| 1348 | |
| 1349 | rc = usbat_read_user_io(us, status); |
| 1350 | if (rc != USB_STOR_XFER_GOOD) |
| 1351 | return USB_STOR_TRANSPORT_ERROR; |
| 1352 | |
| 1353 | US_DEBUGP("INIT 3\n"); |
| 1354 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1355 | rc = usbat_select_and_test_registers(us); |
| 1356 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1357 | return rc; |
| 1358 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1359 | US_DEBUGP("INIT 4\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1360 | |
| 1361 | rc = usbat_read_user_io(us, status); |
| 1362 | if (rc != USB_STOR_XFER_GOOD) |
| 1363 | return USB_STOR_TRANSPORT_ERROR; |
| 1364 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1365 | US_DEBUGP("INIT 5\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1366 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1367 | /* Enable peripheral control signals and card detect */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | rc = usbat_device_enable_cdt(us); |
| 1369 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1370 | return rc; |
| 1371 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1372 | US_DEBUGP("INIT 6\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1373 | |
| 1374 | rc = usbat_read_user_io(us, status); |
| 1375 | if (rc != USB_STOR_XFER_GOOD) |
| 1376 | return USB_STOR_TRANSPORT_ERROR; |
| 1377 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1378 | US_DEBUGP("INIT 7\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1379 | |
| 1380 | msleep(1400); |
| 1381 | |
| 1382 | rc = usbat_read_user_io(us, status); |
| 1383 | if (rc != USB_STOR_XFER_GOOD) |
| 1384 | return USB_STOR_TRANSPORT_ERROR; |
| 1385 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1386 | US_DEBUGP("INIT 8\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1387 | |
| 1388 | rc = usbat_select_and_test_registers(us); |
| 1389 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1390 | return rc; |
| 1391 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1392 | US_DEBUGP("INIT 9\n"); |
| 1393 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1394 | /* At this point, we need to detect which device we are using */ |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1395 | if (usbat_set_transport(us, info)) |
| 1396 | return USB_STOR_TRANSPORT_ERROR; |
| 1397 | |
| 1398 | US_DEBUGP("INIT 10\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1399 | |
| 1400 | if (usbat_get_device_type(us) == USBAT_DEV_FLASH) { |
| 1401 | subcountH = 0x02; |
| 1402 | subcountL = 0x00; |
| 1403 | } |
| 1404 | rc = usbat_set_shuttle_features(us, (USBAT_FEAT_ETEN | USBAT_FEAT_ET2 | USBAT_FEAT_ET1), |
| 1405 | 0x00, 0x88, 0x08, subcountH, subcountL); |
| 1406 | if (rc != USB_STOR_XFER_GOOD) |
| 1407 | return USB_STOR_TRANSPORT_ERROR; |
| 1408 | |
Daniel Drake | 68a6457 | 2005-08-10 18:30:04 +0100 | [diff] [blame] | 1409 | US_DEBUGP("INIT 11\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1410 | |
| 1411 | return USB_STOR_TRANSPORT_GOOD; |
| 1412 | } |
| 1413 | |
| 1414 | /* |
| 1415 | * Transport for the HP 8200e |
| 1416 | */ |
| 1417 | static int usbat_hp8200e_transport(struct scsi_cmnd *srb, struct us_data *us) |
| 1418 | { |
| 1419 | int result; |
| 1420 | unsigned char *status = us->iobuf; |
| 1421 | unsigned char registers[32]; |
| 1422 | unsigned char data[32]; |
| 1423 | unsigned int len; |
| 1424 | int i; |
| 1425 | char string[64]; |
| 1426 | |
| 1427 | len = srb->request_bufflen; |
| 1428 | |
| 1429 | /* Send A0 (ATA PACKET COMMAND). |
| 1430 | Note: I guess we're never going to get any of the ATA |
| 1431 | commands... just ATA Packet Commands. |
| 1432 | */ |
| 1433 | |
| 1434 | registers[0] = USBAT_ATA_FEATURES; |
| 1435 | registers[1] = USBAT_ATA_SECCNT; |
| 1436 | registers[2] = USBAT_ATA_SECNUM; |
| 1437 | registers[3] = USBAT_ATA_LBA_ME; |
| 1438 | registers[4] = USBAT_ATA_LBA_HI; |
| 1439 | registers[5] = USBAT_ATA_DEVICE; |
| 1440 | registers[6] = USBAT_ATA_CMD; |
| 1441 | data[0] = 0x00; |
| 1442 | data[1] = 0x00; |
| 1443 | data[2] = 0x00; |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1444 | data[3] = len&0xFF; /* (cylL) = expected length (L) */ |
| 1445 | data[4] = (len>>8)&0xFF; /* (cylH) = expected length (H) */ |
| 1446 | data[5] = 0xB0; /* (device sel) = slave */ |
| 1447 | data[6] = 0xA0; /* (command) = ATA PACKET COMMAND */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1448 | |
| 1449 | for (i=7; i<19; i++) { |
| 1450 | registers[i] = 0x10; |
| 1451 | data[i] = (i-7 >= srb->cmd_len) ? 0 : srb->cmnd[i-7]; |
| 1452 | } |
| 1453 | |
| 1454 | result = usbat_get_status(us, status); |
| 1455 | US_DEBUGP("Status = %02X\n", *status); |
| 1456 | if (result != USB_STOR_XFER_GOOD) |
| 1457 | return USB_STOR_TRANSPORT_ERROR; |
| 1458 | if (srb->cmnd[0] == TEST_UNIT_READY) |
| 1459 | transferred = 0; |
| 1460 | |
| 1461 | if (srb->sc_data_direction == DMA_TO_DEVICE) { |
| 1462 | |
| 1463 | result = usbat_hp8200e_rw_block_test(us, USBAT_ATA, |
| 1464 | registers, data, 19, |
| 1465 | USBAT_ATA_DATA, USBAT_ATA_STATUS, 0xFD, |
| 1466 | (USBAT_QUAL_FCQ | USBAT_QUAL_ALQ), |
| 1467 | DMA_TO_DEVICE, |
| 1468 | srb->request_buffer, |
| 1469 | len, srb->use_sg, 10); |
| 1470 | |
| 1471 | if (result == USB_STOR_TRANSPORT_GOOD) { |
| 1472 | transferred += len; |
| 1473 | US_DEBUGP("Wrote %08X bytes\n", transferred); |
| 1474 | } |
| 1475 | |
| 1476 | return result; |
| 1477 | |
| 1478 | } else if (srb->cmnd[0] == READ_10 || |
| 1479 | srb->cmnd[0] == GPCMD_READ_CD) { |
| 1480 | |
| 1481 | return usbat_hp8200e_handle_read10(us, registers, data, srb); |
| 1482 | |
| 1483 | } |
| 1484 | |
| 1485 | if (len > 0xFFFF) { |
| 1486 | US_DEBUGP("Error: len = %08X... what do I do now?\n", |
| 1487 | len); |
| 1488 | return USB_STOR_TRANSPORT_ERROR; |
| 1489 | } |
| 1490 | |
| 1491 | if ( (result = usbat_multiple_write(us, |
| 1492 | registers, data, 7)) != USB_STOR_TRANSPORT_GOOD) { |
| 1493 | return result; |
| 1494 | } |
| 1495 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1496 | /* |
| 1497 | * Write the 12-byte command header. |
| 1498 | * |
| 1499 | * If the command is BLANK then set the timer for 75 minutes. |
| 1500 | * Otherwise set it for 10 minutes. |
| 1501 | * |
| 1502 | * NOTE: THE 8200 DOCUMENTATION STATES THAT BLANKING A CDRW |
| 1503 | * AT SPEED 4 IS UNRELIABLE!!! |
| 1504 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1505 | |
| 1506 | if ( (result = usbat_write_block(us, |
| 1507 | USBAT_ATA, srb->cmnd, 12, |
| 1508 | srb->cmnd[0]==GPCMD_BLANK ? 75 : 10)) != |
| 1509 | USB_STOR_TRANSPORT_GOOD) { |
| 1510 | return result; |
| 1511 | } |
| 1512 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1513 | /* If there is response data to be read in then do it here. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1514 | |
| 1515 | if (len != 0 && (srb->sc_data_direction == DMA_FROM_DEVICE)) { |
| 1516 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1517 | /* How many bytes to read in? Check cylL register */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1518 | |
| 1519 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_ME, status) != |
| 1520 | USB_STOR_XFER_GOOD) { |
| 1521 | return USB_STOR_TRANSPORT_ERROR; |
| 1522 | } |
| 1523 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1524 | if (len > 0xFF) { /* need to read cylH also */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1525 | len = *status; |
| 1526 | if (usbat_read(us, USBAT_ATA, USBAT_ATA_LBA_HI, status) != |
| 1527 | USB_STOR_XFER_GOOD) { |
| 1528 | return USB_STOR_TRANSPORT_ERROR; |
| 1529 | } |
| 1530 | len += ((unsigned int) *status)<<8; |
| 1531 | } |
| 1532 | else |
| 1533 | len = *status; |
| 1534 | |
| 1535 | |
| 1536 | result = usbat_read_block(us, srb->request_buffer, len); |
| 1537 | |
| 1538 | /* Debug-print the first 32 bytes of the transfer */ |
| 1539 | |
| 1540 | if (!srb->use_sg) { |
| 1541 | string[0] = 0; |
| 1542 | for (i=0; i<len && i<32; i++) { |
| 1543 | sprintf(string+strlen(string), "%02X ", |
| 1544 | ((unsigned char *)srb->request_buffer)[i]); |
| 1545 | if ((i%16)==15) { |
| 1546 | US_DEBUGP("%s\n", string); |
| 1547 | string[0] = 0; |
| 1548 | } |
| 1549 | } |
| 1550 | if (string[0]!=0) |
| 1551 | US_DEBUGP("%s\n", string); |
| 1552 | } |
| 1553 | } |
| 1554 | |
| 1555 | return result; |
| 1556 | } |
| 1557 | |
| 1558 | /* |
| 1559 | * Transport for USBAT02-based CompactFlash and similar storage devices |
| 1560 | */ |
| 1561 | static int usbat_flash_transport(struct scsi_cmnd * srb, struct us_data *us) |
| 1562 | { |
| 1563 | int rc; |
| 1564 | struct usbat_info *info = (struct usbat_info *) (us->extra); |
| 1565 | unsigned long block, blocks; |
| 1566 | unsigned char *ptr = us->iobuf; |
| 1567 | static unsigned char inquiry_response[36] = { |
| 1568 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 |
| 1569 | }; |
| 1570 | |
| 1571 | if (srb->cmnd[0] == INQUIRY) { |
| 1572 | US_DEBUGP("usbat_flash_transport: INQUIRY. Returning bogus response.\n"); |
| 1573 | memcpy(ptr, inquiry_response, sizeof(inquiry_response)); |
| 1574 | fill_inquiry_response(us, ptr, 36); |
| 1575 | return USB_STOR_TRANSPORT_GOOD; |
| 1576 | } |
| 1577 | |
| 1578 | if (srb->cmnd[0] == READ_CAPACITY) { |
| 1579 | rc = usbat_flash_check_media(us, info); |
| 1580 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1581 | return rc; |
| 1582 | |
| 1583 | rc = usbat_flash_get_sector_count(us, info); |
| 1584 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1585 | return rc; |
| 1586 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1587 | /* hard coded 512 byte sectors as per ATA spec */ |
| 1588 | info->ssize = 0x200; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1589 | US_DEBUGP("usbat_flash_transport: READ_CAPACITY: %ld sectors, %ld bytes per sector\n", |
| 1590 | info->sectors, info->ssize); |
| 1591 | |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1592 | /* |
| 1593 | * build the reply |
| 1594 | * note: must return the sector number of the last sector, |
| 1595 | * *not* the total number of sectors |
| 1596 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1597 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); |
| 1598 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); |
| 1599 | usb_stor_set_xfer_buf(ptr, 8, srb); |
| 1600 | |
| 1601 | return USB_STOR_TRANSPORT_GOOD; |
| 1602 | } |
| 1603 | |
| 1604 | if (srb->cmnd[0] == MODE_SELECT_10) { |
| 1605 | US_DEBUGP("usbat_flash_transport: Gah! MODE_SELECT_10.\n"); |
| 1606 | return USB_STOR_TRANSPORT_ERROR; |
| 1607 | } |
| 1608 | |
| 1609 | if (srb->cmnd[0] == READ_10) { |
| 1610 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 1611 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 1612 | |
| 1613 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); |
| 1614 | |
| 1615 | US_DEBUGP("usbat_flash_transport: READ_10: read block 0x%04lx count %ld\n", block, blocks); |
| 1616 | return usbat_flash_read_data(us, info, block, blocks); |
| 1617 | } |
| 1618 | |
| 1619 | if (srb->cmnd[0] == READ_12) { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1620 | /* |
| 1621 | * I don't think we'll ever see a READ_12 but support it anyway |
| 1622 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1623 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 1624 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 1625 | |
| 1626 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | |
| 1627 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); |
| 1628 | |
| 1629 | US_DEBUGP("usbat_flash_transport: READ_12: read block 0x%04lx count %ld\n", block, blocks); |
| 1630 | return usbat_flash_read_data(us, info, block, blocks); |
| 1631 | } |
| 1632 | |
| 1633 | if (srb->cmnd[0] == WRITE_10) { |
| 1634 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 1635 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 1636 | |
| 1637 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); |
| 1638 | |
| 1639 | US_DEBUGP("usbat_flash_transport: WRITE_10: write block 0x%04lx count %ld\n", block, blocks); |
| 1640 | return usbat_flash_write_data(us, info, block, blocks); |
| 1641 | } |
| 1642 | |
| 1643 | if (srb->cmnd[0] == WRITE_12) { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1644 | /* |
| 1645 | * I don't think we'll ever see a WRITE_12 but support it anyway |
| 1646 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1647 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 1648 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 1649 | |
| 1650 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | |
| 1651 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); |
| 1652 | |
| 1653 | US_DEBUGP("usbat_flash_transport: WRITE_12: write block 0x%04lx count %ld\n", block, blocks); |
| 1654 | return usbat_flash_write_data(us, info, block, blocks); |
| 1655 | } |
| 1656 | |
| 1657 | |
| 1658 | if (srb->cmnd[0] == TEST_UNIT_READY) { |
| 1659 | US_DEBUGP("usbat_flash_transport: TEST_UNIT_READY.\n"); |
| 1660 | |
| 1661 | rc = usbat_flash_check_media(us, info); |
| 1662 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 1663 | return rc; |
| 1664 | |
| 1665 | return usbat_check_status(us); |
| 1666 | } |
| 1667 | |
| 1668 | if (srb->cmnd[0] == REQUEST_SENSE) { |
| 1669 | US_DEBUGP("usbat_flash_transport: REQUEST_SENSE.\n"); |
| 1670 | |
| 1671 | memset(ptr, 0, 18); |
| 1672 | ptr[0] = 0xF0; |
| 1673 | ptr[2] = info->sense_key; |
| 1674 | ptr[7] = 11; |
| 1675 | ptr[12] = info->sense_asc; |
| 1676 | ptr[13] = info->sense_ascq; |
| 1677 | usb_stor_set_xfer_buf(ptr, 18, srb); |
| 1678 | |
| 1679 | return USB_STOR_TRANSPORT_GOOD; |
| 1680 | } |
| 1681 | |
| 1682 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { |
Daniel Drake | b7b1e65 | 2005-09-30 12:49:36 +0100 | [diff] [blame] | 1683 | /* |
| 1684 | * sure. whatever. not like we can stop the user from popping |
| 1685 | * the media out of the device (no locking doors, etc) |
| 1686 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1687 | return USB_STOR_TRANSPORT_GOOD; |
| 1688 | } |
| 1689 | |
| 1690 | US_DEBUGP("usbat_flash_transport: Gah! Unknown command: %d (0x%x)\n", |
| 1691 | srb->cmnd[0], srb->cmnd[0]); |
| 1692 | info->sense_key = 0x05; |
| 1693 | info->sense_asc = 0x20; |
| 1694 | info->sense_ascq = 0x00; |
| 1695 | return USB_STOR_TRANSPORT_FAILED; |
| 1696 | } |
| 1697 | |
| 1698 | /* |
| 1699 | * Default transport function. Attempts to detect which transport function |
| 1700 | * should be called, makes it the new default, and calls it. |
| 1701 | * |
| 1702 | * This function should never be called. Our usbat_init() function detects the |
| 1703 | * device type and changes the us->transport ptr to the transport function |
| 1704 | * relevant to the device. |
| 1705 | * However, we'll support this impossible(?) case anyway. |
| 1706 | */ |
| 1707 | int usbat_transport(struct scsi_cmnd *srb, struct us_data *us) |
| 1708 | { |
| 1709 | struct usbat_info *info = (struct usbat_info*) (us->extra); |
| 1710 | |
| 1711 | if (usbat_set_transport(us, info)) |
| 1712 | return USB_STOR_TRANSPORT_ERROR; |
| 1713 | |
| 1714 | return us->transport(srb, us); |
| 1715 | } |
| 1716 | |