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| 1 | /* Driver for Microtek Scanmaker X6 USB scanner, and possibly others. | |||
| 2 | * | |||
| 3 | * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com> | |||
| 4 | * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de> | |||
| 5 | * | |||
| 6 | * Parts shamelessly stolen from usb-storage and copyright by their | |||
| 7 | * authors. Thanks to Matt Dharm for giving us permission! | |||
| 8 | * | |||
| 9 | * This driver implements a SCSI host controller driver and a USB | |||
| 10 | * device driver. To avoid confusion, all the USB related stuff is | |||
| 11 | * prefixed by mts_usb_ and all the SCSI stuff by mts_scsi_. | |||
| 12 | * | |||
| 13 | * Microtek (www.microtek.com) did not release the specifications for | |||
| 14 | * their USB protocol to us, so we had to reverse engineer them. We | |||
| 15 | * don't know for which models they are valid. | |||
| 16 | * | |||
| 17 | * The X6 USB has three bulk endpoints, one output (0x1) down which | |||
| 18 | * commands and outgoing data are sent, and two input: 0x82 from which | |||
| 19 | * normal data is read from the scanner (in packets of maximum 32 | |||
| 20 | * bytes) and from which the status byte is read, and 0x83 from which | |||
| 21 | * the results of a scan (or preview) are read in up to 64 * 1024 byte | |||
| 22 | * chunks by the Windows driver. We don't know how much it is possible | |||
| 23 | * to read at a time from 0x83. | |||
| 24 | * | |||
| 25 | * It seems possible to read (with URB transfers) everything from 0x82 | |||
| 26 | * in one go, without bothering to read in 32 byte chunks. | |||
| 27 | * | |||
| 28 | * There seems to be an optimisation of a further READ implicit if | |||
| 29 | * you simply read from 0x83. | |||
| 30 | * | |||
| 31 | * Guessed protocol: | |||
| 32 | * | |||
| 33 | * Send raw SCSI command to EP 0x1 | |||
| 34 | * | |||
| 35 | * If there is data to receive: | |||
| 36 | * If the command was READ datatype=image: | |||
| 37 | * Read a lot of data from EP 0x83 | |||
| 38 | * Else: | |||
| 39 | * Read data from EP 0x82 | |||
| 40 | * Else: | |||
| 41 | * If there is data to transmit: | |||
| 42 | * Write it to EP 0x1 | |||
| 43 | * | |||
| 44 | * Read status byte from EP 0x82 | |||
| 45 | * | |||
| 46 | * References: | |||
| 47 | * | |||
| 48 | * The SCSI command set for the scanner is available from | |||
| 49 | * ftp://ftp.microtek.com/microtek/devpack/ | |||
| 50 | * | |||
| 51 | * Microtek NV sent us a more up to date version of the document. If | |||
| 52 | * you want it, just send mail. | |||
| 53 | * | |||
| 54 | * Status: | |||
| 55 | * | |||
| 56 | * Untested with multiple scanners. | |||
| 57 | * Untested on SMP. | |||
| 58 | * Untested on a bigendian machine. | |||
| 59 | * | |||
| 60 | * History: | |||
| 61 | * | |||
| 62 | * 20000417 starting history | |||
| 63 | * 20000417 fixed load oops | |||
| 64 | * 20000417 fixed unload oops | |||
| 65 | * 20000419 fixed READ IMAGE detection | |||
| 66 | * 20000424 started conversion to use URBs | |||
| 67 | * 20000502 handled short transfers as errors | |||
| 68 | * 20000513 rename and organisation of functions (john) | |||
| 69 | * 20000513 added IDs for all products supported by Windows driver (john) | |||
| 70 | * 20000514 Rewrote mts_scsi_queuecommand to use URBs (john) | |||
| 71 | * 20000514 Version 0.0.8j | |||
| 72 | * 20000514 Fix reporting of non-existant devices to SCSI layer (john) | |||
| 73 | * 20000514 Added MTS_DEBUG_INT (john) | |||
| 74 | * 20000514 Changed "usb-microtek" to "microtek" for consistency (john) | |||
| 75 | * 20000514 Stupid bug fixes (john) | |||
| 76 | * 20000514 Version 0.0.9j | |||
| 77 | * 20000515 Put transfer context and URB in mts_desc (john) | |||
| 78 | * 20000515 Added prelim turn off debugging support (john) | |||
| 79 | * 20000515 Version 0.0.10j | |||
| 80 | * 20000515 Fixed up URB allocation (clear URB on alloc) (john) | |||
| 81 | * 20000515 Version 0.0.11j | |||
| 82 | * 20000516 Removed unnecessary spinlock in mts_transfer_context (john) | |||
| 83 | * 20000516 Removed unnecessary up on instance lock in mts_remove_nolock (john) | |||
| 84 | * 20000516 Implemented (badly) scsi_abort (john) | |||
| 85 | * 20000516 Version 0.0.12j | |||
| 86 | * 20000517 Hopefully removed mts_remove_nolock quasideadlock (john) | |||
| 87 | * 20000517 Added mts_debug_dump to print ll USB info (john) | |||
| 88 | * 20000518 Tweaks and documentation updates (john) | |||
| 89 | * 20000518 Version 0.0.13j | |||
| 90 | * 20000518 Cleaned up abort handling (john) | |||
| 91 | * 20000523 Removed scsi_command and various scsi_..._resets (john) | |||
| 92 | * 20000523 Added unlink URB on scsi_abort, now OHCI supports it (john) | |||
| 93 | * 20000523 Fixed last tiresome compile warning (john) | |||
| 94 | * 20000523 Version 0.0.14j (though version 0.1 has come out?) | |||
| 95 | * 20000602 Added primitive reset | |||
| 96 | * 20000602 Version 0.2.0 | |||
| 97 | * 20000603 various cosmetic changes | |||
| 98 | * 20000603 Version 0.2.1 | |||
| 99 | * 20000620 minor cosmetic changes | |||
| 100 | * 20000620 Version 0.2.2 | |||
| 101 | * 20000822 Hopefully fixed deadlock in mts_remove_nolock() | |||
| 102 | * 20000822 Fixed minor race in mts_transfer_cleanup() | |||
| 103 | * 20000822 Fixed deadlock on submission error in queuecommand | |||
| 104 | * 20000822 Version 0.2.3 | |||
| 105 | * 20000913 Reduced module size if debugging is off | |||
| 106 | * 20000913 Version 0.2.4 | |||
| 107 | * 20010210 New abort logic | |||
| 108 | * 20010210 Version 0.3.0 | |||
| 109 | * 20010217 Merged scatter/gather | |||
| 110 | * 20010218 Version 0.4.0 | |||
| 111 | * 20010218 Cosmetic fixes | |||
| 112 | * 20010218 Version 0.4.1 | |||
| 113 | * 20010306 Abort while using scatter/gather | |||
| 114 | * 20010306 Version 0.4.2 | |||
| 115 | * 20010311 Remove all timeouts and tidy up generally (john) | |||
| 116 | * 20010320 check return value of scsi_register() | |||
| 117 | * 20010320 Version 0.4.3 | |||
| 118 | * 20010408 Identify version on module load. | |||
| 119 | * 20011003 Fix multiple requests | |||
| 120 | */ | |||
| 121 | ||||
| 122 | #include <linux/module.h> | |||
| 123 | #include <linux/kernel.h> | |||
| 124 | #include <linux/sched.h> | |||
| 125 | #include <linux/signal.h> | |||
| 126 | #include <linux/errno.h> | |||
| 127 | #include <linux/random.h> | |||
| 128 | #include <linux/poll.h> | |||
| 129 | #include <linux/init.h> | |||
| 130 | #include <linux/slab.h> | |||
| 131 | #include <linux/spinlock.h> | |||
| 132 | #include <linux/smp_lock.h> | |||
| 133 | #include <linux/usb.h> | |||
| 134 | #include <linux/proc_fs.h> | |||
| 135 | ||||
| 136 | #include <asm/atomic.h> | |||
| 137 | #include <linux/blkdev.h> | |||
| 138 | #include "../../scsi/scsi.h" | |||
| 139 | #include <scsi/scsi_host.h> | |||
| 140 | ||||
| 141 | #include "microtek.h" | |||
| 142 | ||||
| 143 | /* | |||
| 144 | * Version Information | |||
| 145 | */ | |||
| 146 | #define DRIVER_VERSION "v0.4.3" | |||
| 147 | #define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>" | |||
| 148 | #define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver" | |||
| 149 | ||||
| 150 | /* Should we do debugging? */ | |||
| 151 | ||||
| 152 | //#define MTS_DO_DEBUG | |||
| 153 | ||||
| 154 | /* USB layer driver interface */ | |||
| 155 | ||||
| 156 | static int mts_usb_probe(struct usb_interface *intf, | |||
| 157 | const struct usb_device_id *id); | |||
| 158 | static void mts_usb_disconnect(struct usb_interface *intf); | |||
| 159 | ||||
| 160 | static struct usb_device_id mts_usb_ids []; | |||
| 161 | ||||
| 162 | static struct usb_driver mts_usb_driver = { | |||
| 163 | .name = "microtekX6", | |||
| 164 | .probe = mts_usb_probe, | |||
| 165 | .disconnect = mts_usb_disconnect, | |||
| 166 | .id_table = mts_usb_ids, | |||
| 167 | }; | |||
| 168 | ||||
| 169 | ||||
| 170 | /* Internal driver stuff */ | |||
| 171 | ||||
| 172 | #define MTS_VERSION "0.4.3" | |||
| 173 | #define MTS_NAME "microtek usb (rev " MTS_VERSION "): " | |||
| 174 | ||||
| 175 | #define MTS_WARNING(x...) \ | |||
| 176 | printk( KERN_WARNING MTS_NAME x ) | |||
| 177 | #define MTS_ERROR(x...) \ | |||
| 178 | printk( KERN_ERR MTS_NAME x ) | |||
| 179 | #define MTS_INT_ERROR(x...) \ | |||
| 180 | MTS_ERROR(x) | |||
| 181 | #define MTS_MESSAGE(x...) \ | |||
| 182 | printk( KERN_INFO MTS_NAME x ) | |||
| 183 | ||||
| 184 | #if defined MTS_DO_DEBUG | |||
| 185 | ||||
| 186 | #define MTS_DEBUG(x...) \ | |||
| 187 | printk( KERN_DEBUG MTS_NAME x ) | |||
| 188 | ||||
| 189 | #define MTS_DEBUG_GOT_HERE() \ | |||
| 190 | MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __PRETTY_FUNCTION__ ) | |||
| 191 | #define MTS_DEBUG_INT() \ | |||
| 192 | do { MTS_DEBUG_GOT_HERE(); \ | |||
| 193 | MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \ | |||
| 194 | MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",(int)transfer->status,(int)context->data_length, (int)transfer->actual_length ); \ | |||
| 195 | mts_debug_dump(context->instance);\ | |||
| 196 | } while(0) | |||
| 197 | #else | |||
| 198 | ||||
| 199 | #define MTS_NUL_STATEMENT do { } while(0) | |||
| 200 | ||||
| 201 | #define MTS_DEBUG(x...) MTS_NUL_STATEMENT | |||
| 202 | #define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT | |||
| 203 | #define MTS_DEBUG_INT() MTS_NUL_STATEMENT | |||
| 204 | ||||
| 205 | #endif | |||
| 206 | ||||
| 207 | ||||
| 208 | ||||
| 209 | #define MTS_INT_INIT()\ | |||
| 210 | struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \ | |||
| 211 | MTS_DEBUG_INT();\ | |||
| 212 | ||||
| 213 | #ifdef MTS_DO_DEBUG | |||
| 214 | ||||
| 215 | static inline void mts_debug_dump(struct mts_desc* desc) { | |||
| 216 | MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n", | |||
| 217 | (int)desc, | |||
| 218 | (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0] | |||
| 219 | ); | |||
| 220 | MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n", | |||
| 221 | usb_sndbulkpipe(desc->usb_dev,desc->ep_out), | |||
| 222 | usb_rcvbulkpipe(desc->usb_dev,desc->ep_response), | |||
| 223 | usb_rcvbulkpipe(desc->usb_dev,desc->ep_image) | |||
| 224 | ); | |||
| 225 | } | |||
| 226 | ||||
| 227 | ||||
| 228 | static inline void mts_show_command(Scsi_Cmnd *srb) | |||
| 229 | { | |||
| 230 | char *what = NULL; | |||
| 231 | ||||
| 232 | switch (srb->cmnd[0]) { | |||
| 233 | case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break; | |||
| 234 | case REZERO_UNIT: what = "REZERO_UNIT"; break; | |||
| 235 | case REQUEST_SENSE: what = "REQUEST_SENSE"; break; | |||
| 236 | case FORMAT_UNIT: what = "FORMAT_UNIT"; break; | |||
| 237 | case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break; | |||
| 238 | case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break; | |||
| 239 | case READ_6: what = "READ_6"; break; | |||
| 240 | case WRITE_6: what = "WRITE_6"; break; | |||
| 241 | case SEEK_6: what = "SEEK_6"; break; | |||
| 242 | case READ_REVERSE: what = "READ_REVERSE"; break; | |||
| 243 | case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break; | |||
| 244 | case SPACE: what = "SPACE"; break; | |||
| 245 | case INQUIRY: what = "INQUIRY"; break; | |||
| 246 | case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break; | |||
| 247 | case MODE_SELECT: what = "MODE_SELECT"; break; | |||
| 248 | case RESERVE: what = "RESERVE"; break; | |||
| 249 | case RELEASE: what = "RELEASE"; break; | |||
| 250 | case COPY: what = "COPY"; break; | |||
| 251 | case ERASE: what = "ERASE"; break; | |||
| 252 | case MODE_SENSE: what = "MODE_SENSE"; break; | |||
| 253 | case START_STOP: what = "START_STOP"; break; | |||
| 254 | case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break; | |||
| 255 | case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break; | |||
| 256 | case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break; | |||
| 257 | case SET_WINDOW: what = "SET_WINDOW"; break; | |||
| 258 | case READ_CAPACITY: what = "READ_CAPACITY"; break; | |||
| 259 | case READ_10: what = "READ_10"; break; | |||
| 260 | case WRITE_10: what = "WRITE_10"; break; | |||
| 261 | case SEEK_10: what = "SEEK_10"; break; | |||
| 262 | case WRITE_VERIFY: what = "WRITE_VERIFY"; break; | |||
| 263 | case VERIFY: what = "VERIFY"; break; | |||
| 264 | case SEARCH_HIGH: what = "SEARCH_HIGH"; break; | |||
| 265 | case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break; | |||
| 266 | case SEARCH_LOW: what = "SEARCH_LOW"; break; | |||
| 267 | case SET_LIMITS: what = "SET_LIMITS"; break; | |||
| 268 | case READ_POSITION: what = "READ_POSITION"; break; | |||
| 269 | case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break; | |||
| 270 | case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break; | |||
| 271 | case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break; | |||
| 272 | case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break; | |||
| 273 | case COMPARE: what = "COMPARE"; break; | |||
| 274 | case COPY_VERIFY: what = "COPY_VERIFY"; break; | |||
| 275 | case WRITE_BUFFER: what = "WRITE_BUFFER"; break; | |||
| 276 | case READ_BUFFER: what = "READ_BUFFER"; break; | |||
| 277 | case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break; | |||
| 278 | case READ_LONG: what = "READ_LONG"; break; | |||
| 279 | case WRITE_LONG: what = "WRITE_LONG"; break; | |||
| 280 | case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break; | |||
| 281 | case WRITE_SAME: what = "WRITE_SAME"; break; | |||
| 282 | case READ_TOC: what = "READ_TOC"; break; | |||
| 283 | case LOG_SELECT: what = "LOG_SELECT"; break; | |||
| 284 | case LOG_SENSE: what = "LOG_SENSE"; break; | |||
| 285 | case MODE_SELECT_10: what = "MODE_SELECT_10"; break; | |||
| 286 | case MODE_SENSE_10: what = "MODE_SENSE_10"; break; | |||
| 287 | case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break; | |||
| 288 | case READ_12: what = "READ_12"; break; | |||
| 289 | case WRITE_12: what = "WRITE_12"; break; | |||
| 290 | case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break; | |||
| 291 | case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break; | |||
| 292 | case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break; | |||
| 293 | case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break; | |||
| 294 | case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break; | |||
| 295 | case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break; | |||
| 296 | case WRITE_LONG_2: what = "WRITE_LONG_2"; break; | |||
| 297 | default: | |||
| 298 | MTS_DEBUG("can't decode command\n"); | |||
| 299 | goto out; | |||
| 300 | break; | |||
| 301 | } | |||
| 302 | MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len); | |||
| 303 | ||||
| 304 | out: | |||
| 305 | MTS_DEBUG( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n", | |||
| 306 | srb->cmnd[0], srb->cmnd[1], srb->cmnd[2], srb->cmnd[3], srb->cmnd[4], srb->cmnd[5], | |||
| 307 | srb->cmnd[6], srb->cmnd[7], srb->cmnd[8], srb->cmnd[9]); | |||
| 308 | } | |||
| 309 | ||||
| 310 | #else | |||
| 311 | ||||
| 0 | 0 | - | 312 | static inline void mts_show_command(Scsi_Cmnd * dummy) |
| 313 | { | |||
| 314 | } | |||
| 315 | ||||
| 0 | 0 | - | 316 | static inline void mts_debug_dump(struct mts_desc* dummy) |
| 317 | { | |||
| 318 | } | |||
| 319 | ||||
| 320 | #endif | |||
| 321 | ||||
| 0 | 0 | - | 322 | static inline void mts_urb_abort(struct mts_desc* desc) { |
| 323 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 323 | do-while (0) |
| 324 | mts_debug_dump(desc); | |||
| 325 | ||||
| 326 | usb_kill_urb( desc->urb ); | |||
| 327 | } | |||
| 328 | ||||
| 0 | 0 | - | 329 | static int mts_slave_alloc (struct scsi_device *s) |
| 330 | { | |||
| 331 | s->inquiry_len = 0x24; | |||
| 0 | - | 332 | return 0; | |
| 333 | } | |||
| 334 | ||||
| 0 | 0 | - | 335 | static int mts_slave_configure (struct scsi_device *s) |
| 336 | { | |||
| 337 | blk_queue_dma_alignment(s->request_queue, (512 - 1)); | |||
| 0 | - | 338 | return 0; | |
| 339 | } | |||
| 340 | ||||
| 0 | 0 | - | 341 | static int mts_scsi_abort (Scsi_Cmnd *srb) |
| 342 | { | |||
| 343 | struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]); | |||
| 344 | ||||
| 345 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 345 | do-while (0) |
| 346 | ||||
| 347 | mts_urb_abort(desc); | |||
| 348 | ||||
| 0 | - | 349 | return FAILED; | |
| 350 | } | |||
| 351 | ||||
| 0 | 0 | - | 352 | static int mts_scsi_host_reset (Scsi_Cmnd *srb) |
| 353 | { | |||
| 354 | struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]); | |||
| 355 | int result, rc; | |||
| 356 | ||||
| 357 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 357 | do-while (0) |
| 358 | mts_debug_dump(desc); | |||
| 359 | ||||
| 360 | rc = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf); | |||
| 0 | 0 | - | 361 | if (rc < 0) |
| 0 | - | 362 | return FAILED; | |
| 363 | result = usb_reset_device(desc->usb_dev);; | |||
| 0 | 0 | - | 364 | if (rc) |
| 365 | usb_unlock_device(desc->usb_dev); | |||
| 366 | return result ? FAILED : SUCCESS; | |||
| 0 | 0 | - | 366 | ternary-?: result |
| 0 | - | 366 | return result ? 0x2003 : 0x2002 | |
| 367 | } | |||
| 368 | ||||
| 369 | static | |||
| 370 | int mts_scsi_queuecommand (Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback ); | |||
| 371 | ||||
| 372 | static void mts_transfer_cleanup( struct urb *transfer ); | |||
| 373 | static void mts_do_sg(struct urb * transfer, struct pt_regs *regs); | |||
| 374 | ||||
| 375 | static inline | |||
| 0 | 0 | - | 376 | void mts_int_submit_urb (struct urb* transfer, |
| 377 | int pipe, | |||
| 378 | void* data, | |||
| 379 | unsigned length, | |||
| 380 | usb_complete_t callback ) | |||
| 381 | /* Interrupt context! */ | |||
| 382 | ||||
| 383 | /* Holding transfer->context->lock! */ | |||
| 384 | { | |||
| 385 | int res; | |||
| 386 | ||||
| 387 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 387 | do-while (0) |
| 388 | ||||
| 389 | usb_fill_bulk_urb(transfer, | |||
| 390 | context->instance->usb_dev, | |||
| 391 | pipe, | |||
| 392 | data, | |||
| 393 | length, | |||
| 394 | callback, | |||
| 395 | context | |||
| 396 | ); | |||
| 397 | ||||
| 398 | transfer->status = 0; | |||
| 399 | ||||
| 400 | res = usb_submit_urb( transfer, GFP_ATOMIC ); | |||
| 0 | 0 | - | 401 | if ( unlikely(res) ) { |
| 402 | MTS_INT_ERROR( "could not submit URB! Error was %d\n",(int)res ); | |||
| 403 | context->srb->result = DID_ERROR << 16; | |||
| 404 | mts_transfer_cleanup(transfer); | |||
| 405 | } | |||
| 0 | - | 406 | return; | |
| 407 | } | |||
| 408 | ||||
| 409 | ||||
| 0 | 0 | - | 410 | static void mts_transfer_cleanup( struct urb *transfer ) |
| 411 | /* Interrupt context! */ | |||
| 412 | { | |||
| 413 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 413 | do-while (0) |
| 414 | ||||
| 0 | 0 | - | 415 | if ( likely(context->final_callback != NULL) ) |
| 416 | context->final_callback(context->srb); | |||
| 417 | ||||
| 418 | } | |||
| 419 | ||||
| 0 | 0 | - | 420 | static void mts_transfer_done( struct urb *transfer, struct pt_regs *regs ) |
| 421 | { | |||
| 422 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 422 | do-while (0) |
| 423 | ||||
| 424 | context->srb->result &= MTS_SCSI_ERR_MASK; | |||
| 425 | context->srb->result |= (unsigned)(*context->scsi_status)<<1; | |||
| 426 | ||||
| 427 | mts_transfer_cleanup(transfer); | |||
| 428 | ||||
| 0 | - | 429 | return; | |
| 430 | } | |||
| 431 | ||||
| 432 | ||||
| 0 | 0 | - | 433 | static void mts_get_status( struct urb *transfer ) |
| 434 | /* Interrupt context! */ | |||
| 435 | { | |||
| 436 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 436 | do-while (0) |
| 437 | ||||
| 438 | mts_int_submit_urb(transfer, | |||
| 439 | usb_rcvbulkpipe(context->instance->usb_dev, | |||
| 440 | context->instance->ep_response), | |||
| 441 | context->scsi_status, | |||
| 442 | 1, | |||
| 443 | mts_transfer_done ); | |||
| 444 | } | |||
| 445 | ||||
| 0 | 0 | - | 446 | static void mts_data_done( struct urb* transfer, struct pt_regs *regs ) |
| 447 | /* Interrupt context! */ | |||
| 448 | { | |||
| 449 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 449 | do-while (0) |
| 450 | ||||
| 0 | 0 | - | 451 | if ( context->data_length != transfer->actual_length ) { |
| 452 | context->srb->resid = context->data_length - transfer->actual_length; | |||
| 0 | 0 | - | 453 | } else if ( unlikely(transfer->status) ) { |
| 454 | context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16; | |||
| 0 | 0 | - | 454 | ternary-?: transfer -> status == - 2 |
| 455 | } | |||
| 456 | ||||
| 457 | mts_get_status(transfer); | |||
| 458 | ||||
| 0 | - | 459 | return; | |
| 460 | } | |||
| 461 | ||||
| 462 | ||||
| 0 | 0 | - | 463 | static void mts_command_done( struct urb *transfer, struct pt_regs *regs ) |
| 464 | /* Interrupt context! */ | |||
| 465 | { | |||
| 466 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 466 | do-while (0) |
| 467 | ||||
| 0 | 0 | - | 468 | if ( unlikely(transfer->status) ) { |
| 0 | 0 | - | 469 | if (transfer->status == -ENOENT) { |
| 470 | /* We are being killed */ | |||
| 471 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 471 | do-while (0) |
| 472 | context->srb->result = DID_ABORT<<16; | |||
| 473 | } else { | |||
| 474 | /* A genuine error has occurred */ | |||
| 475 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 475 | do-while (0) |
| 476 | ||||
| 477 | context->srb->result = DID_ERROR<<16; | |||
| 478 | } | |||
| 479 | mts_transfer_cleanup(transfer); | |||
| 480 | ||||
| 0 | - | 481 | return; | |
| 482 | } | |||
| 483 | ||||
| 0 | 0 | - | 484 | if (context->srb->cmnd[0] == REQUEST_SENSE) { |
| 485 | mts_int_submit_urb(transfer, | |||
| 486 | context->data_pipe, | |||
| 487 | context->srb->sense_buffer, | |||
| 488 | context->data_length, | |||
| 489 | mts_data_done); | |||
| 490 | } else { if ( context->data ) { | |||
| 0 | 0 | - | 490 | if (context -> data) |
| 491 | mts_int_submit_urb(transfer, | |||
| 492 | context->data_pipe, | |||
| 493 | context->data, | |||
| 494 | context->data_length, | |||
| 495 | context->srb->use_sg > 1 ? mts_do_sg : mts_data_done); | |||
| 0 | 0 | - | 495 | ternary-?: context -> srb -> use_sg > 1 |
| 496 | } else { | |||
| 497 | mts_get_status(transfer); | |||
| 498 | } | |||
| 499 | } | |||
| 500 | ||||
| 0 | - | 501 | return; | |
| 502 | } | |||
| 503 | ||||
| 0 | 0 | - | 504 | static void mts_do_sg (struct urb* transfer, struct pt_regs *regs) |
| 505 | { | |||
| 506 | struct scatterlist * sg; | |||
| 507 | MTS_INT_INIT(); | |||
| 0 | 0 | - | 507 | do-while (0) |
| 508 | ||||
| 509 | MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,context->srb->use_sg); | |||
| 0 | 0 | - | 509 | do-while (0) |
| 510 | ||||
| 0 | 0 | - | 511 | if (unlikely(transfer->status)) { |
| 512 | context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16; | |||
| 0 | 0 | - | 512 | ternary-?: transfer -> status == - 2 |
| 513 | mts_transfer_cleanup(transfer); | |||
| 514 | } | |||
| 515 | ||||
| 516 | sg = context->srb->buffer; | |||
| 517 | context->fragment++; | |||
| 518 | mts_int_submit_urb(transfer, | |||
| 519 | context->data_pipe, | |||
| 520 | page_address(sg[context->fragment].page) + | |||
| 521 | sg[context->fragment].offset, | |||
| 522 | sg[context->fragment].length, | |||
| 523 | context->fragment + 1 == context->srb->use_sg ? mts_data_done : mts_do_sg); | |||
| 0 | 0 | - | 523 | ternary-?: context -> fragment + 1 == context .. |
| 0 | - | 524 | return; | |
| 525 | } | |||
| 526 | ||||
| 527 | static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 }; | |||
| 528 | static const u8 mts_read_image_sig_len = 4; | |||
| 529 | static const unsigned char mts_direction[256/8] = { | |||
| 530 | 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77, | |||
| 531 | 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, | |||
| 532 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, | |||
| 533 | 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 | |||
| 534 | }; | |||
| 535 | ||||
| 536 | ||||
| 537 | #define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1) | |||
| 538 | ||||
| 539 | static void | |||
| 0 | 0 | - | 540 | mts_build_transfer_context( Scsi_Cmnd *srb, struct mts_desc* desc ) |
| 541 | { | |||
| 542 | int pipe; | |||
| 543 | struct scatterlist * sg; | |||
| 544 | ||||
| 545 | MTS_DEBUG_GOT_HERE(); | |||
| 0 | 0 | - | 545 | do-while (0) |
| 546 | ||||
| 547 | ||||