Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 1 | /* |
| 2 | * Driver for Datafab USB Compact Flash reader |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * datafab driver v0.1: |
| 5 | * |
| 6 | * First release |
| 7 | * |
| 8 | * Current development and maintenance by: |
| 9 | * (c) 2000 Jimmie Mayfield (mayfield+datafab@sackheads.org) |
| 10 | * |
| 11 | * Many thanks to Robert Baruch for the SanDisk SmartMedia reader driver |
| 12 | * which I used as a template for this driver. |
| 13 | * |
| 14 | * Some bugfixes and scatter-gather code by Gregory P. Smith |
| 15 | * (greg-usb@electricrain.com) |
| 16 | * |
| 17 | * Fix for media change by Joerg Schneider (js@joergschneider.com) |
| 18 | * |
| 19 | * Other contributors: |
| 20 | * (c) 2002 Alan Stern <stern@rowland.org> |
| 21 | * |
| 22 | * This program is free software; you can redistribute it and/or modify it |
| 23 | * under the terms of the GNU General Public License as published by the |
| 24 | * Free Software Foundation; either version 2, or (at your option) any |
| 25 | * later version. |
| 26 | * |
| 27 | * This program is distributed in the hope that it will be useful, but |
| 28 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 29 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 30 | * General Public License for more details. |
| 31 | * |
| 32 | * You should have received a copy of the GNU General Public License along |
| 33 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 34 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 35 | */ |
| 36 | |
| 37 | /* |
| 38 | * This driver attempts to support USB CompactFlash reader/writer devices |
| 39 | * based on Datafab USB-to-ATA chips. It was specifically developed for the |
| 40 | * Datafab MDCFE-B USB CompactFlash reader but has since been found to work |
| 41 | * with a variety of Datafab-based devices from a number of manufacturers. |
| 42 | * I've received a report of this driver working with a Datafab-based |
| 43 | * SmartMedia device though please be aware that I'm personally unable to |
| 44 | * test SmartMedia support. |
| 45 | * |
| 46 | * This driver supports reading and writing. If you're truly paranoid, |
| 47 | * however, you can force the driver into a write-protected state by setting |
| 48 | * the WP enable bits in datafab_handle_mode_sense(). See the comments |
| 49 | * in that routine. |
| 50 | */ |
| 51 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 52 | #include <linux/errno.h> |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 53 | #include <linux/module.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | #include <linux/slab.h> |
| 55 | |
| 56 | #include <scsi/scsi.h> |
| 57 | #include <scsi/scsi_cmnd.h> |
| 58 | |
| 59 | #include "usb.h" |
| 60 | #include "transport.h" |
| 61 | #include "protocol.h" |
| 62 | #include "debug.h" |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 63 | #include "scsiglue.h" |
| 64 | |
| 65 | #define DRV_NAME "ums-datafab" |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 66 | |
Maciej Grela | 4246b06 | 2009-02-28 12:39:20 -0800 | [diff] [blame] | 67 | MODULE_DESCRIPTION("Driver for Datafab USB Compact Flash reader"); |
| 68 | MODULE_AUTHOR("Jimmie Mayfield <mayfield+datafab@sackheads.org>"); |
| 69 | MODULE_LICENSE("GPL"); |
| 70 | |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 71 | struct datafab_info { |
| 72 | unsigned long sectors; /* total sector count */ |
| 73 | unsigned long ssize; /* sector size in bytes */ |
| 74 | signed char lun; /* used for dual-slot readers */ |
| 75 | |
| 76 | /* the following aren't used yet */ |
| 77 | unsigned char sense_key; |
| 78 | unsigned long sense_asc; /* additional sense code */ |
| 79 | unsigned long sense_ascq; /* additional sense code qualifier */ |
| 80 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | |
| 82 | static int datafab_determine_lun(struct us_data *us, |
| 83 | struct datafab_info *info); |
| 84 | |
| 85 | |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 86 | /* |
| 87 | * The table of devices |
| 88 | */ |
| 89 | #define UNUSUAL_DEV(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax, \ |
| 90 | vendorName, productName, useProtocol, useTransport, \ |
| 91 | initFunction, flags) \ |
| 92 | { USB_DEVICE_VER(id_vendor, id_product, bcdDeviceMin, bcdDeviceMax), \ |
Sebastian Andrzej Siewior | f61870e | 2012-08-28 22:37:13 +0200 | [diff] [blame] | 93 | .driver_info = (flags) } |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 94 | |
Felipe Balbi | b03379f | 2011-11-15 09:53:30 +0200 | [diff] [blame] | 95 | static struct usb_device_id datafab_usb_ids[] = { |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 96 | # include "unusual_datafab.h" |
| 97 | { } /* Terminating entry */ |
| 98 | }; |
| 99 | MODULE_DEVICE_TABLE(usb, datafab_usb_ids); |
| 100 | |
| 101 | #undef UNUSUAL_DEV |
| 102 | |
| 103 | /* |
| 104 | * The flags table |
| 105 | */ |
| 106 | #define UNUSUAL_DEV(idVendor, idProduct, bcdDeviceMin, bcdDeviceMax, \ |
| 107 | vendor_name, product_name, use_protocol, use_transport, \ |
| 108 | init_function, Flags) \ |
| 109 | { \ |
| 110 | .vendorName = vendor_name, \ |
| 111 | .productName = product_name, \ |
| 112 | .useProtocol = use_protocol, \ |
| 113 | .useTransport = use_transport, \ |
| 114 | .initFunction = init_function, \ |
| 115 | } |
| 116 | |
| 117 | static struct us_unusual_dev datafab_unusual_dev_list[] = { |
| 118 | # include "unusual_datafab.h" |
| 119 | { } /* Terminating entry */ |
| 120 | }; |
| 121 | |
| 122 | #undef UNUSUAL_DEV |
| 123 | |
| 124 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 125 | static inline int |
| 126 | datafab_bulk_read(struct us_data *us, unsigned char *data, unsigned int len) { |
| 127 | if (len == 0) |
| 128 | return USB_STOR_XFER_GOOD; |
| 129 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 130 | usb_stor_dbg(us, "len = %d\n", len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 131 | return usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, |
| 132 | data, len, NULL); |
| 133 | } |
| 134 | |
| 135 | |
| 136 | static inline int |
| 137 | datafab_bulk_write(struct us_data *us, unsigned char *data, unsigned int len) { |
| 138 | if (len == 0) |
| 139 | return USB_STOR_XFER_GOOD; |
| 140 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 141 | usb_stor_dbg(us, "len = %d\n", len); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | return usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, |
| 143 | data, len, NULL); |
| 144 | } |
| 145 | |
| 146 | |
| 147 | static int datafab_read_data(struct us_data *us, |
| 148 | struct datafab_info *info, |
| 149 | u32 sector, |
| 150 | u32 sectors) |
| 151 | { |
| 152 | unsigned char *command = us->iobuf; |
| 153 | unsigned char *buffer; |
| 154 | unsigned char thistime; |
| 155 | unsigned int totallen, alloclen; |
| 156 | int len, result; |
Jens Axboe | 1f6f31a | 2007-05-11 12:33:09 +0200 | [diff] [blame] | 157 | unsigned int sg_offset = 0; |
| 158 | struct scatterlist *sg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | |
| 160 | // we're working in LBA mode. according to the ATA spec, |
| 161 | // we can support up to 28-bit addressing. I don't know if Datafab |
| 162 | // supports beyond 24-bit addressing. It's kind of hard to test |
| 163 | // since it requires > 8GB CF card. |
| 164 | // |
| 165 | if (sectors > 0x0FFFFFFF) |
| 166 | return USB_STOR_TRANSPORT_ERROR; |
| 167 | |
| 168 | if (info->lun == -1) { |
| 169 | result = datafab_determine_lun(us, info); |
| 170 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 171 | return result; |
| 172 | } |
| 173 | |
| 174 | totallen = sectors * info->ssize; |
| 175 | |
| 176 | // Since we don't read more than 64 KB at a time, we have to create |
| 177 | // a bounce buffer and move the data a piece at a time between the |
| 178 | // bounce buffer and the actual transfer buffer. |
| 179 | |
| 180 | alloclen = min(totallen, 65536u); |
| 181 | buffer = kmalloc(alloclen, GFP_NOIO); |
| 182 | if (buffer == NULL) |
| 183 | return USB_STOR_TRANSPORT_ERROR; |
| 184 | |
| 185 | do { |
| 186 | // loop, never allocate or transfer more than 64k at once |
| 187 | // (min(128k, 255*info->ssize) is the real limit) |
| 188 | |
| 189 | len = min(totallen, alloclen); |
| 190 | thistime = (len / info->ssize) & 0xff; |
| 191 | |
| 192 | command[0] = 0; |
| 193 | command[1] = thistime; |
| 194 | command[2] = sector & 0xFF; |
| 195 | command[3] = (sector >> 8) & 0xFF; |
| 196 | command[4] = (sector >> 16) & 0xFF; |
| 197 | |
| 198 | command[5] = 0xE0 + (info->lun << 4); |
| 199 | command[5] |= (sector >> 24) & 0x0F; |
| 200 | command[6] = 0x20; |
| 201 | command[7] = 0x01; |
| 202 | |
| 203 | // send the read command |
| 204 | result = datafab_bulk_write(us, command, 8); |
| 205 | if (result != USB_STOR_XFER_GOOD) |
| 206 | goto leave; |
| 207 | |
| 208 | // read the result |
| 209 | result = datafab_bulk_read(us, buffer, len); |
| 210 | if (result != USB_STOR_XFER_GOOD) |
| 211 | goto leave; |
| 212 | |
| 213 | // Store the data in the transfer buffer |
| 214 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
Jens Axboe | 1f6f31a | 2007-05-11 12:33:09 +0200 | [diff] [blame] | 215 | &sg, &sg_offset, TO_XFER_BUF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 216 | |
| 217 | sector += thistime; |
| 218 | totallen -= len; |
| 219 | } while (totallen > 0); |
| 220 | |
| 221 | kfree(buffer); |
| 222 | return USB_STOR_TRANSPORT_GOOD; |
| 223 | |
| 224 | leave: |
| 225 | kfree(buffer); |
| 226 | return USB_STOR_TRANSPORT_ERROR; |
| 227 | } |
| 228 | |
| 229 | |
| 230 | static int datafab_write_data(struct us_data *us, |
| 231 | struct datafab_info *info, |
| 232 | u32 sector, |
| 233 | u32 sectors) |
| 234 | { |
| 235 | unsigned char *command = us->iobuf; |
| 236 | unsigned char *reply = us->iobuf; |
| 237 | unsigned char *buffer; |
| 238 | unsigned char thistime; |
| 239 | unsigned int totallen, alloclen; |
| 240 | int len, result; |
Jens Axboe | 1f6f31a | 2007-05-11 12:33:09 +0200 | [diff] [blame] | 241 | unsigned int sg_offset = 0; |
| 242 | struct scatterlist *sg = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | |
| 244 | // we're working in LBA mode. according to the ATA spec, |
| 245 | // we can support up to 28-bit addressing. I don't know if Datafab |
| 246 | // supports beyond 24-bit addressing. It's kind of hard to test |
| 247 | // since it requires > 8GB CF card. |
| 248 | // |
| 249 | if (sectors > 0x0FFFFFFF) |
| 250 | return USB_STOR_TRANSPORT_ERROR; |
| 251 | |
| 252 | if (info->lun == -1) { |
| 253 | result = datafab_determine_lun(us, info); |
| 254 | if (result != USB_STOR_TRANSPORT_GOOD) |
| 255 | return result; |
| 256 | } |
| 257 | |
| 258 | totallen = sectors * info->ssize; |
| 259 | |
| 260 | // Since we don't write more than 64 KB at a time, we have to create |
| 261 | // a bounce buffer and move the data a piece at a time between the |
| 262 | // bounce buffer and the actual transfer buffer. |
| 263 | |
| 264 | alloclen = min(totallen, 65536u); |
| 265 | buffer = kmalloc(alloclen, GFP_NOIO); |
| 266 | if (buffer == NULL) |
| 267 | return USB_STOR_TRANSPORT_ERROR; |
| 268 | |
| 269 | do { |
| 270 | // loop, never allocate or transfer more than 64k at once |
| 271 | // (min(128k, 255*info->ssize) is the real limit) |
| 272 | |
| 273 | len = min(totallen, alloclen); |
| 274 | thistime = (len / info->ssize) & 0xff; |
| 275 | |
| 276 | // Get the data from the transfer buffer |
| 277 | usb_stor_access_xfer_buf(buffer, len, us->srb, |
Jens Axboe | 1f6f31a | 2007-05-11 12:33:09 +0200 | [diff] [blame] | 278 | &sg, &sg_offset, FROM_XFER_BUF); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | |
| 280 | command[0] = 0; |
| 281 | command[1] = thistime; |
| 282 | command[2] = sector & 0xFF; |
| 283 | command[3] = (sector >> 8) & 0xFF; |
| 284 | command[4] = (sector >> 16) & 0xFF; |
| 285 | |
| 286 | command[5] = 0xE0 + (info->lun << 4); |
| 287 | command[5] |= (sector >> 24) & 0x0F; |
| 288 | command[6] = 0x30; |
| 289 | command[7] = 0x02; |
| 290 | |
| 291 | // send the command |
| 292 | result = datafab_bulk_write(us, command, 8); |
| 293 | if (result != USB_STOR_XFER_GOOD) |
| 294 | goto leave; |
| 295 | |
| 296 | // send the data |
| 297 | result = datafab_bulk_write(us, buffer, len); |
| 298 | if (result != USB_STOR_XFER_GOOD) |
| 299 | goto leave; |
| 300 | |
| 301 | // read the result |
| 302 | result = datafab_bulk_read(us, reply, 2); |
| 303 | if (result != USB_STOR_XFER_GOOD) |
| 304 | goto leave; |
| 305 | |
| 306 | if (reply[0] != 0x50 && reply[1] != 0) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 307 | usb_stor_dbg(us, "Gah! write return code: %02x %02x\n", |
| 308 | reply[0], reply[1]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | result = USB_STOR_TRANSPORT_ERROR; |
| 310 | goto leave; |
| 311 | } |
| 312 | |
| 313 | sector += thistime; |
| 314 | totallen -= len; |
| 315 | } while (totallen > 0); |
| 316 | |
| 317 | kfree(buffer); |
| 318 | return USB_STOR_TRANSPORT_GOOD; |
| 319 | |
| 320 | leave: |
| 321 | kfree(buffer); |
| 322 | return USB_STOR_TRANSPORT_ERROR; |
| 323 | } |
| 324 | |
| 325 | |
| 326 | static int datafab_determine_lun(struct us_data *us, |
| 327 | struct datafab_info *info) |
| 328 | { |
| 329 | // Dual-slot readers can be thought of as dual-LUN devices. |
| 330 | // We need to determine which card slot is being used. |
| 331 | // We'll send an IDENTIFY DEVICE command and see which LUN responds... |
| 332 | // |
| 333 | // There might be a better way of doing this? |
| 334 | |
| 335 | static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 }; |
| 336 | unsigned char *command = us->iobuf; |
| 337 | unsigned char *buf; |
| 338 | int count = 0, rc; |
| 339 | |
Julia Lawall | 64aebe7 | 2009-07-19 17:29:57 +0200 | [diff] [blame] | 340 | if (!info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | return USB_STOR_TRANSPORT_ERROR; |
| 342 | |
| 343 | memcpy(command, scommand, 8); |
| 344 | buf = kmalloc(512, GFP_NOIO); |
| 345 | if (!buf) |
| 346 | return USB_STOR_TRANSPORT_ERROR; |
| 347 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 348 | usb_stor_dbg(us, "locating...\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 349 | |
| 350 | // we'll try 3 times before giving up... |
| 351 | // |
| 352 | while (count++ < 3) { |
| 353 | command[5] = 0xa0; |
| 354 | |
| 355 | rc = datafab_bulk_write(us, command, 8); |
| 356 | if (rc != USB_STOR_XFER_GOOD) { |
| 357 | rc = USB_STOR_TRANSPORT_ERROR; |
| 358 | goto leave; |
| 359 | } |
| 360 | |
| 361 | rc = datafab_bulk_read(us, buf, 512); |
| 362 | if (rc == USB_STOR_XFER_GOOD) { |
| 363 | info->lun = 0; |
| 364 | rc = USB_STOR_TRANSPORT_GOOD; |
| 365 | goto leave; |
| 366 | } |
| 367 | |
| 368 | command[5] = 0xb0; |
| 369 | |
| 370 | rc = datafab_bulk_write(us, command, 8); |
| 371 | if (rc != USB_STOR_XFER_GOOD) { |
| 372 | rc = USB_STOR_TRANSPORT_ERROR; |
| 373 | goto leave; |
| 374 | } |
| 375 | |
| 376 | rc = datafab_bulk_read(us, buf, 512); |
| 377 | if (rc == USB_STOR_XFER_GOOD) { |
| 378 | info->lun = 1; |
| 379 | rc = USB_STOR_TRANSPORT_GOOD; |
| 380 | goto leave; |
| 381 | } |
| 382 | |
| 383 | msleep(20); |
| 384 | } |
| 385 | |
| 386 | rc = USB_STOR_TRANSPORT_ERROR; |
| 387 | |
| 388 | leave: |
| 389 | kfree(buf); |
| 390 | return rc; |
| 391 | } |
| 392 | |
| 393 | static int datafab_id_device(struct us_data *us, |
| 394 | struct datafab_info *info) |
| 395 | { |
| 396 | // this is a variation of the ATA "IDENTIFY DEVICE" command...according |
| 397 | // to the ATA spec, 'Sector Count' isn't used but the Windows driver |
| 398 | // sets this bit so we do too... |
| 399 | // |
| 400 | static unsigned char scommand[8] = { 0, 1, 0, 0, 0, 0xa0, 0xec, 1 }; |
| 401 | unsigned char *command = us->iobuf; |
| 402 | unsigned char *reply; |
| 403 | int rc; |
| 404 | |
Julia Lawall | 64aebe7 | 2009-07-19 17:29:57 +0200 | [diff] [blame] | 405 | if (!info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 406 | return USB_STOR_TRANSPORT_ERROR; |
| 407 | |
| 408 | if (info->lun == -1) { |
| 409 | rc = datafab_determine_lun(us, info); |
| 410 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 411 | return rc; |
| 412 | } |
| 413 | |
| 414 | memcpy(command, scommand, 8); |
| 415 | reply = kmalloc(512, GFP_NOIO); |
| 416 | if (!reply) |
| 417 | return USB_STOR_TRANSPORT_ERROR; |
| 418 | |
| 419 | command[5] += (info->lun << 4); |
| 420 | |
| 421 | rc = datafab_bulk_write(us, command, 8); |
| 422 | if (rc != USB_STOR_XFER_GOOD) { |
| 423 | rc = USB_STOR_TRANSPORT_ERROR; |
| 424 | goto leave; |
| 425 | } |
| 426 | |
| 427 | // we'll go ahead and extract the media capacity while we're here... |
| 428 | // |
| 429 | rc = datafab_bulk_read(us, reply, 512); |
| 430 | if (rc == USB_STOR_XFER_GOOD) { |
| 431 | // capacity is at word offset 57-58 |
| 432 | // |
| 433 | info->sectors = ((u32)(reply[117]) << 24) | |
| 434 | ((u32)(reply[116]) << 16) | |
| 435 | ((u32)(reply[115]) << 8) | |
| 436 | ((u32)(reply[114]) ); |
| 437 | rc = USB_STOR_TRANSPORT_GOOD; |
| 438 | goto leave; |
| 439 | } |
| 440 | |
| 441 | rc = USB_STOR_TRANSPORT_ERROR; |
| 442 | |
| 443 | leave: |
| 444 | kfree(reply); |
| 445 | return rc; |
| 446 | } |
| 447 | |
| 448 | |
| 449 | static int datafab_handle_mode_sense(struct us_data *us, |
| 450 | struct scsi_cmnd * srb, |
| 451 | int sense_6) |
| 452 | { |
| 453 | static unsigned char rw_err_page[12] = { |
| 454 | 0x1, 0xA, 0x21, 1, 0, 0, 0, 0, 1, 0, 0, 0 |
| 455 | }; |
| 456 | static unsigned char cache_page[12] = { |
| 457 | 0x8, 0xA, 0x1, 0, 0, 0, 0, 0, 0, 0, 0, 0 |
| 458 | }; |
| 459 | static unsigned char rbac_page[12] = { |
| 460 | 0x1B, 0xA, 0, 0x81, 0, 0, 0, 0, 0, 0, 0, 0 |
| 461 | }; |
| 462 | static unsigned char timer_page[8] = { |
| 463 | 0x1C, 0x6, 0, 0, 0, 0 |
| 464 | }; |
| 465 | unsigned char pc, page_code; |
| 466 | unsigned int i = 0; |
| 467 | struct datafab_info *info = (struct datafab_info *) (us->extra); |
| 468 | unsigned char *ptr = us->iobuf; |
| 469 | |
| 470 | // most of this stuff is just a hack to get things working. the |
| 471 | // datafab reader doesn't present a SCSI interface so we |
| 472 | // fudge the SCSI commands... |
| 473 | // |
| 474 | |
| 475 | pc = srb->cmnd[2] >> 6; |
| 476 | page_code = srb->cmnd[2] & 0x3F; |
| 477 | |
| 478 | switch (pc) { |
| 479 | case 0x0: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 480 | usb_stor_dbg(us, "Current values\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 481 | break; |
| 482 | case 0x1: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 483 | usb_stor_dbg(us, "Changeable values\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 484 | break; |
| 485 | case 0x2: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 486 | usb_stor_dbg(us, "Default values\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 487 | break; |
| 488 | case 0x3: |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 489 | usb_stor_dbg(us, "Saves values\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 490 | break; |
| 491 | } |
| 492 | |
| 493 | memset(ptr, 0, 8); |
| 494 | if (sense_6) { |
| 495 | ptr[2] = 0x00; // WP enable: 0x80 |
| 496 | i = 4; |
| 497 | } else { |
| 498 | ptr[3] = 0x00; // WP enable: 0x80 |
| 499 | i = 8; |
| 500 | } |
| 501 | |
| 502 | switch (page_code) { |
| 503 | default: |
| 504 | // vendor-specific mode |
| 505 | info->sense_key = 0x05; |
| 506 | info->sense_asc = 0x24; |
| 507 | info->sense_ascq = 0x00; |
| 508 | return USB_STOR_TRANSPORT_FAILED; |
| 509 | |
| 510 | case 0x1: |
| 511 | memcpy(ptr + i, rw_err_page, sizeof(rw_err_page)); |
| 512 | i += sizeof(rw_err_page); |
| 513 | break; |
| 514 | |
| 515 | case 0x8: |
| 516 | memcpy(ptr + i, cache_page, sizeof(cache_page)); |
| 517 | i += sizeof(cache_page); |
| 518 | break; |
| 519 | |
| 520 | case 0x1B: |
| 521 | memcpy(ptr + i, rbac_page, sizeof(rbac_page)); |
| 522 | i += sizeof(rbac_page); |
| 523 | break; |
| 524 | |
| 525 | case 0x1C: |
| 526 | memcpy(ptr + i, timer_page, sizeof(timer_page)); |
| 527 | i += sizeof(timer_page); |
| 528 | break; |
| 529 | |
| 530 | case 0x3F: // retrieve all pages |
| 531 | memcpy(ptr + i, timer_page, sizeof(timer_page)); |
| 532 | i += sizeof(timer_page); |
| 533 | memcpy(ptr + i, rbac_page, sizeof(rbac_page)); |
| 534 | i += sizeof(rbac_page); |
| 535 | memcpy(ptr + i, cache_page, sizeof(cache_page)); |
| 536 | i += sizeof(cache_page); |
| 537 | memcpy(ptr + i, rw_err_page, sizeof(rw_err_page)); |
| 538 | i += sizeof(rw_err_page); |
| 539 | break; |
| 540 | } |
| 541 | |
| 542 | if (sense_6) |
| 543 | ptr[0] = i - 1; |
| 544 | else |
| 545 | ((__be16 *) ptr)[0] = cpu_to_be16(i - 2); |
| 546 | usb_stor_set_xfer_buf(ptr, i, srb); |
| 547 | |
| 548 | return USB_STOR_TRANSPORT_GOOD; |
| 549 | } |
| 550 | |
| 551 | static void datafab_info_destructor(void *extra) |
| 552 | { |
| 553 | // this routine is a placeholder... |
| 554 | // currently, we don't allocate any extra memory so we're okay |
| 555 | } |
| 556 | |
| 557 | |
| 558 | // Transport for the Datafab MDCFE-B |
| 559 | // |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 560 | static int datafab_transport(struct scsi_cmnd *srb, struct us_data *us) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 561 | { |
| 562 | struct datafab_info *info; |
| 563 | int rc; |
| 564 | unsigned long block, blocks; |
| 565 | unsigned char *ptr = us->iobuf; |
| 566 | static unsigned char inquiry_reply[8] = { |
| 567 | 0x00, 0x80, 0x00, 0x01, 0x1F, 0x00, 0x00, 0x00 |
| 568 | }; |
| 569 | |
| 570 | if (!us->extra) { |
Oliver Neukum | 887c256 | 2006-01-08 12:33:45 +0100 | [diff] [blame] | 571 | us->extra = kzalloc(sizeof(struct datafab_info), GFP_NOIO); |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 572 | if (!us->extra) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 573 | return USB_STOR_TRANSPORT_ERROR; |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 574 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 575 | us->extra_destructor = datafab_info_destructor; |
| 576 | ((struct datafab_info *)us->extra)->lun = -1; |
| 577 | } |
| 578 | |
| 579 | info = (struct datafab_info *) (us->extra); |
| 580 | |
| 581 | if (srb->cmnd[0] == INQUIRY) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 582 | usb_stor_dbg(us, "INQUIRY - Returning bogus response\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 583 | memcpy(ptr, inquiry_reply, sizeof(inquiry_reply)); |
| 584 | fill_inquiry_response(us, ptr, 36); |
| 585 | return USB_STOR_TRANSPORT_GOOD; |
| 586 | } |
| 587 | |
| 588 | if (srb->cmnd[0] == READ_CAPACITY) { |
| 589 | info->ssize = 0x200; // hard coded 512 byte sectors as per ATA spec |
| 590 | rc = datafab_id_device(us, info); |
| 591 | if (rc != USB_STOR_TRANSPORT_GOOD) |
| 592 | return rc; |
| 593 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 594 | usb_stor_dbg(us, "READ_CAPACITY: %ld sectors, %ld bytes per sector\n", |
| 595 | info->sectors, info->ssize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 596 | |
| 597 | // build the reply |
| 598 | // we need the last sector, not the number of sectors |
| 599 | ((__be32 *) ptr)[0] = cpu_to_be32(info->sectors - 1); |
| 600 | ((__be32 *) ptr)[1] = cpu_to_be32(info->ssize); |
| 601 | usb_stor_set_xfer_buf(ptr, 8, srb); |
| 602 | |
| 603 | return USB_STOR_TRANSPORT_GOOD; |
| 604 | } |
| 605 | |
| 606 | if (srb->cmnd[0] == MODE_SELECT_10) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 607 | usb_stor_dbg(us, "Gah! MODE_SELECT_10\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 608 | return USB_STOR_TRANSPORT_ERROR; |
| 609 | } |
| 610 | |
| 611 | // don't bother implementing READ_6 or WRITE_6. |
| 612 | // |
| 613 | if (srb->cmnd[0] == READ_10) { |
| 614 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 615 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 616 | |
| 617 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); |
| 618 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 619 | usb_stor_dbg(us, "READ_10: read block 0x%04lx count %ld\n", |
| 620 | block, blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 621 | return datafab_read_data(us, info, block, blocks); |
| 622 | } |
| 623 | |
| 624 | if (srb->cmnd[0] == READ_12) { |
| 625 | // we'll probably never see a READ_12 but we'll do it anyway... |
| 626 | // |
| 627 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 628 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 629 | |
| 630 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | |
| 631 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); |
| 632 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 633 | usb_stor_dbg(us, "READ_12: read block 0x%04lx count %ld\n", |
| 634 | block, blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 635 | return datafab_read_data(us, info, block, blocks); |
| 636 | } |
| 637 | |
| 638 | if (srb->cmnd[0] == WRITE_10) { |
| 639 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 640 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 641 | |
| 642 | blocks = ((u32)(srb->cmnd[7]) << 8) | ((u32)(srb->cmnd[8])); |
| 643 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 644 | usb_stor_dbg(us, "WRITE_10: write block 0x%04lx count %ld\n", |
| 645 | block, blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 646 | return datafab_write_data(us, info, block, blocks); |
| 647 | } |
| 648 | |
| 649 | if (srb->cmnd[0] == WRITE_12) { |
| 650 | // we'll probably never see a WRITE_12 but we'll do it anyway... |
| 651 | // |
| 652 | block = ((u32)(srb->cmnd[2]) << 24) | ((u32)(srb->cmnd[3]) << 16) | |
| 653 | ((u32)(srb->cmnd[4]) << 8) | ((u32)(srb->cmnd[5])); |
| 654 | |
| 655 | blocks = ((u32)(srb->cmnd[6]) << 24) | ((u32)(srb->cmnd[7]) << 16) | |
| 656 | ((u32)(srb->cmnd[8]) << 8) | ((u32)(srb->cmnd[9])); |
| 657 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 658 | usb_stor_dbg(us, "WRITE_12: write block 0x%04lx count %ld\n", |
| 659 | block, blocks); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 660 | return datafab_write_data(us, info, block, blocks); |
| 661 | } |
| 662 | |
| 663 | if (srb->cmnd[0] == TEST_UNIT_READY) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 664 | usb_stor_dbg(us, "TEST_UNIT_READY\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 665 | return datafab_id_device(us, info); |
| 666 | } |
| 667 | |
| 668 | if (srb->cmnd[0] == REQUEST_SENSE) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 669 | usb_stor_dbg(us, "REQUEST_SENSE - Returning faked response\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 670 | |
| 671 | // this response is pretty bogus right now. eventually if necessary |
| 672 | // we can set the correct sense data. so far though it hasn't been |
| 673 | // necessary |
| 674 | // |
| 675 | memset(ptr, 0, 18); |
| 676 | ptr[0] = 0xF0; |
| 677 | ptr[2] = info->sense_key; |
| 678 | ptr[7] = 11; |
| 679 | ptr[12] = info->sense_asc; |
| 680 | ptr[13] = info->sense_ascq; |
| 681 | usb_stor_set_xfer_buf(ptr, 18, srb); |
| 682 | |
| 683 | return USB_STOR_TRANSPORT_GOOD; |
| 684 | } |
| 685 | |
| 686 | if (srb->cmnd[0] == MODE_SENSE) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 687 | usb_stor_dbg(us, "MODE_SENSE_6 detected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 688 | return datafab_handle_mode_sense(us, srb, 1); |
| 689 | } |
| 690 | |
| 691 | if (srb->cmnd[0] == MODE_SENSE_10) { |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 692 | usb_stor_dbg(us, "MODE_SENSE_10 detected\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 693 | return datafab_handle_mode_sense(us, srb, 0); |
| 694 | } |
| 695 | |
| 696 | if (srb->cmnd[0] == ALLOW_MEDIUM_REMOVAL) { |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 697 | /* |
| 698 | * sure. whatever. not like we can stop the user from |
| 699 | * popping the media out of the device (no locking doors, etc) |
| 700 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 701 | return USB_STOR_TRANSPORT_GOOD; |
| 702 | } |
| 703 | |
| 704 | if (srb->cmnd[0] == START_STOP) { |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 705 | /* |
| 706 | * this is used by sd.c'check_scsidisk_media_change to detect |
| 707 | * media change |
| 708 | */ |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 709 | usb_stor_dbg(us, "START_STOP\n"); |
Felipe Balbi | f0183a3 | 2016-04-18 13:09:11 +0300 | [diff] [blame] | 710 | /* |
| 711 | * the first datafab_id_device after a media change returns |
| 712 | * an error (determined experimentally) |
| 713 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 714 | rc = datafab_id_device(us, info); |
| 715 | if (rc == USB_STOR_TRANSPORT_GOOD) { |
| 716 | info->sense_key = NO_SENSE; |
| 717 | srb->result = SUCCESS; |
| 718 | } else { |
| 719 | info->sense_key = UNIT_ATTENTION; |
| 720 | srb->result = SAM_STAT_CHECK_CONDITION; |
| 721 | } |
| 722 | return rc; |
| 723 | } |
| 724 | |
Joe Perches | 191648d | 2013-04-19 11:44:00 -0700 | [diff] [blame] | 725 | usb_stor_dbg(us, "Gah! Unknown command: %d (0x%x)\n", |
| 726 | srb->cmnd[0], srb->cmnd[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 727 | info->sense_key = 0x05; |
| 728 | info->sense_asc = 0x20; |
| 729 | info->sense_ascq = 0x00; |
| 730 | return USB_STOR_TRANSPORT_FAILED; |
| 731 | } |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 732 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 733 | static struct scsi_host_template datafab_host_template; |
| 734 | |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 735 | static int datafab_probe(struct usb_interface *intf, |
| 736 | const struct usb_device_id *id) |
| 737 | { |
| 738 | struct us_data *us; |
| 739 | int result; |
| 740 | |
| 741 | result = usb_stor_probe1(&us, intf, id, |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 742 | (id - datafab_usb_ids) + datafab_unusual_dev_list, |
| 743 | &datafab_host_template); |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 744 | if (result) |
| 745 | return result; |
| 746 | |
| 747 | us->transport_name = "Datafab Bulk-Only"; |
| 748 | us->transport = datafab_transport; |
| 749 | us->transport_reset = usb_stor_Bulk_reset; |
| 750 | us->max_lun = 1; |
| 751 | |
| 752 | result = usb_stor_probe2(us); |
| 753 | return result; |
| 754 | } |
| 755 | |
| 756 | static struct usb_driver datafab_driver = { |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 757 | .name = DRV_NAME, |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 758 | .probe = datafab_probe, |
| 759 | .disconnect = usb_stor_disconnect, |
| 760 | .suspend = usb_stor_suspend, |
| 761 | .resume = usb_stor_resume, |
| 762 | .reset_resume = usb_stor_reset_resume, |
| 763 | .pre_reset = usb_stor_pre_reset, |
| 764 | .post_reset = usb_stor_post_reset, |
| 765 | .id_table = datafab_usb_ids, |
| 766 | .soft_unbind = 1, |
Huajun Li | e73b2db | 2012-01-14 10:15:21 +0800 | [diff] [blame] | 767 | .no_dynamic_id = 1, |
Alan Stern | 2cbbf35 | 2009-02-12 14:48:15 -0500 | [diff] [blame] | 768 | }; |
| 769 | |
Akinobu Mita | aa519be | 2015-05-06 18:24:21 +0900 | [diff] [blame] | 770 | module_usb_stor_driver(datafab_driver, datafab_host_template, DRV_NAME); |