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[PATCH] clean up inline static vs static inline
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / image / microtek.c
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1da177e4
LT		 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
156static int mts_usb_probe(struct usb_interface *intf,
157 const struct usb_device_id *id);
158static void mts_usb_disconnect(struct usb_interface *intf);
159
160static struct usb_device_id mts_usb_ids [];
161
162static struct usb_driver mts_usb_driver = {
163 .owner = THIS_MODULE,
164 .name = "microtekX6",
165 .probe = mts_usb_probe,
166 .disconnect = mts_usb_disconnect,
167 .id_table = mts_usb_ids,
168};
169
170
171/* Internal driver stuff */
172
173#define MTS_VERSION "0.4.3"
174#define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
175
176#define MTS_WARNING(x...) \
177 printk( KERN_WARNING MTS_NAME x )
178#define MTS_ERROR(x...) \
179 printk( KERN_ERR MTS_NAME x )
180#define MTS_INT_ERROR(x...) \
181 MTS_ERROR(x)
182#define MTS_MESSAGE(x...) \
183 printk( KERN_INFO MTS_NAME x )
184
185#if defined MTS_DO_DEBUG
186
187#define MTS_DEBUG(x...) \
188 printk( KERN_DEBUG MTS_NAME x )
189
190#define MTS_DEBUG_GOT_HERE() \
191 MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __PRETTY_FUNCTION__ )
192#define MTS_DEBUG_INT() \
193 do { MTS_DEBUG_GOT_HERE(); \
194 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
195 MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",(int)transfer->status,(int)context->data_length, (int)transfer->actual_length ); \
196 mts_debug_dump(context->instance);\
197 } while(0)
198#else
199
200#define MTS_NUL_STATEMENT do { } while(0)
201
202#define MTS_DEBUG(x...) MTS_NUL_STATEMENT
203#define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT
204#define MTS_DEBUG_INT() MTS_NUL_STATEMENT
205
206#endif
207
208
209
210#define MTS_INT_INIT()\
211 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
212 MTS_DEBUG_INT();\
213
214#ifdef MTS_DO_DEBUG
215
216static inline void mts_debug_dump(struct mts_desc* desc) {
217 MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n",
218 (int)desc,
219 (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
220 );
221 MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n",
222 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
223 usb_rcvbulkpipe(desc->usb_dev,desc->ep_response),
224 usb_rcvbulkpipe(desc->usb_dev,desc->ep_image)
225 );
226}
227
228
229static inline void mts_show_command(Scsi_Cmnd *srb)
230{
231 char *what = NULL;
232
233 switch (srb->cmnd[0]) {
234 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
235 case REZERO_UNIT: what = "REZERO_UNIT"; break;
236 case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
237 case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
238 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
239 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
240 case READ_6: what = "READ_6"; break;
241 case WRITE_6: what = "WRITE_6"; break;
242 case SEEK_6: what = "SEEK_6"; break;
243 case READ_REVERSE: what = "READ_REVERSE"; break;
244 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
245 case SPACE: what = "SPACE"; break;
246 case INQUIRY: what = "INQUIRY"; break;
247 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
248 case MODE_SELECT: what = "MODE_SELECT"; break;
249 case RESERVE: what = "RESERVE"; break;
250 case RELEASE: what = "RELEASE"; break;
251 case COPY: what = "COPY"; break;
252 case ERASE: what = "ERASE"; break;
253 case MODE_SENSE: what = "MODE_SENSE"; break;
254 case START_STOP: what = "START_STOP"; break;
255 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
256 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
257 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
258 case SET_WINDOW: what = "SET_WINDOW"; break;
259 case READ_CAPACITY: what = "READ_CAPACITY"; break;
260 case READ_10: what = "READ_10"; break;
261 case WRITE_10: what = "WRITE_10"; break;
262 case SEEK_10: what = "SEEK_10"; break;
263 case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
264 case VERIFY: what = "VERIFY"; break;
265 case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
266 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
267 case SEARCH_LOW: what = "SEARCH_LOW"; break;
268 case SET_LIMITS: what = "SET_LIMITS"; break;
269 case READ_POSITION: what = "READ_POSITION"; break;
270 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
271 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
272 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
273 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
274 case COMPARE: what = "COMPARE"; break;
275 case COPY_VERIFY: what = "COPY_VERIFY"; break;
276 case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
277 case READ_BUFFER: what = "READ_BUFFER"; break;
278 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
279 case READ_LONG: what = "READ_LONG"; break;
280 case WRITE_LONG: what = "WRITE_LONG"; break;
281 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
282 case WRITE_SAME: what = "WRITE_SAME"; break;
283 case READ_TOC: what = "READ_TOC"; break;
284 case LOG_SELECT: what = "LOG_SELECT"; break;
285 case LOG_SENSE: what = "LOG_SENSE"; break;
286 case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
287 case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
288 case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break;
289 case READ_12: what = "READ_12"; break;
290 case WRITE_12: what = "WRITE_12"; break;
291 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
292 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
293 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
294 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
295 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
296 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
297 case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
298 default:
299 MTS_DEBUG("can't decode command\n");
300 goto out;
301 break;
302 }
303 MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
304
305 out:
306 MTS_DEBUG( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
307 srb->cmnd[0], srb->cmnd[1], srb->cmnd[2], srb->cmnd[3], srb->cmnd[4], srb->cmnd[5],
308 srb->cmnd[6], srb->cmnd[7], srb->cmnd[8], srb->cmnd[9]);
309}
310
311#else
312
313static inline void mts_show_command(Scsi_Cmnd * dummy)
314{
315}
316
317static inline void mts_debug_dump(struct mts_desc* dummy)
318{
319}
320
321#endif
322
323static inline void mts_urb_abort(struct mts_desc* desc) {
324 MTS_DEBUG_GOT_HERE();
325 mts_debug_dump(desc);
326
327 usb_kill_urb( desc->urb );
328}
329
330static int mts_scsi_abort (Scsi_Cmnd *srb)
331{
332 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
333
334 MTS_DEBUG_GOT_HERE();
335
336 mts_urb_abort(desc);
337
275cfdf4 338 return FAILED;
1da177e4
LT		 339}
340
341static int mts_scsi_host_reset (Scsi_Cmnd *srb)
342{
343 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
344 int result, rc;
345
346 MTS_DEBUG_GOT_HERE();
347 mts_debug_dump(desc);
348
349 rc = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
350 if (rc < 0)
351 return FAILED;
352 result = usb_reset_device(desc->usb_dev);;
353 if (rc)
354 usb_unlock_device(desc->usb_dev);
355 return result ? FAILED : SUCCESS;
356}
357
358static
359int mts_scsi_queuecommand (Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback );
360
361static void mts_transfer_cleanup( struct urb *transfer );
362static void mts_do_sg(struct urb * transfer, struct pt_regs *regs);
363
77933d72 364static inline
1da177e4
LT		 365void mts_int_submit_urb (struct urb* transfer,
366 int pipe,
367 void* data,
368 unsigned length,
369 usb_complete_t callback )
370/* Interrupt context! */
371
372/* Holding transfer->context->lock! */
373{
374 int res;
375
376 MTS_INT_INIT();
377
378 usb_fill_bulk_urb(transfer,
379 context->instance->usb_dev,
380 pipe,
381 data,
382 length,
383 callback,
384 context
385 );
386
387 transfer->status = 0;
388
389 res = usb_submit_urb( transfer, GFP_ATOMIC );
390 if ( unlikely(res) ) {
391 MTS_INT_ERROR( "could not submit URB! Error was %d\n",(int)res );
392 context->srb->result = DID_ERROR << 16;
393 mts_transfer_cleanup(transfer);
394 }
395 return;
396}
397
398
399static void mts_transfer_cleanup( struct urb *transfer )
400/* Interrupt context! */
401{
402 MTS_INT_INIT();
403
404 if ( likely(context->final_callback != NULL) )
405 context->final_callback(context->srb);
406
407}
408
409static void mts_transfer_done( struct urb *transfer, struct pt_regs *regs )
410{
411 MTS_INT_INIT();
412
413 context->srb->result &= MTS_SCSI_ERR_MASK;
414 context->srb->result |= (unsigned)context->status<<1;
415
416 mts_transfer_cleanup(transfer);
417
418 return;
419}
420
421
422static void mts_get_status( struct urb *transfer )
423/* Interrupt context! */
424{
425 MTS_INT_INIT();
426
427 mts_int_submit_urb(transfer,
428 usb_rcvbulkpipe(context->instance->usb_dev,
429 context->instance->ep_response),
430 &context->status,
431 1,
432 mts_transfer_done );
433}
434
435static void mts_data_done( struct urb* transfer, struct pt_regs *regs )
436/* Interrupt context! */
437{
438 MTS_INT_INIT();
439
440 if ( context->data_length != transfer->actual_length ) {
441 context->srb->resid = context->data_length - transfer->actual_length;
442 } else if ( unlikely(transfer->status) ) {
443 context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
444 }
445
446 mts_get_status(transfer);
447
448 return;
449}
450
451
452static void mts_command_done( struct urb *transfer, struct pt_regs *regs )
453/* Interrupt context! */
454{
455 MTS_INT_INIT();
456
457 if ( unlikely(transfer->status) ) {
458 if (transfer->status == -ENOENT) {
459 /* We are being killed */
460 MTS_DEBUG_GOT_HERE();
461 context->srb->result = DID_ABORT<<16;
462 } else {
463 /* A genuine error has occurred */
464 MTS_DEBUG_GOT_HERE();
465
466 context->srb->result = DID_ERROR<<16;
467 }
468 mts_transfer_cleanup(transfer);
469
470 return;
471 }
472
473 if (context->srb->cmnd[0] == REQUEST_SENSE) {
474 mts_int_submit_urb(transfer,
475 context->data_pipe,
476 context->srb->sense_buffer,
477 context->data_length,
478 mts_data_done);
479 } else { if ( context->data ) {
480 mts_int_submit_urb(transfer,
481 context->data_pipe,
482 context->data,
483 context->data_length,
484 context->srb->use_sg ? mts_do_sg : mts_data_done);
485 } else {
486 mts_get_status(transfer);
487 }
488 }
489
490 return;
491}
492
493static void mts_do_sg (struct urb* transfer, struct pt_regs *regs)
494{
495 struct scatterlist * sg;
496 MTS_INT_INIT();
497
498 MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,context->srb->use_sg);
499
500 if (unlikely(transfer->status)) {
501 context->srb->result = (transfer->status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
502 mts_transfer_cleanup(transfer);
503 }
504
505 sg = context->srb->buffer;
506 context->fragment++;
507 mts_int_submit_urb(transfer,
508 context->data_pipe,
509 page_address(sg[context->fragment].page) +
510 sg[context->fragment].offset,
511 sg[context->fragment].length,
512 context->fragment + 1 == context->srb->use_sg ? mts_data_done : mts_do_sg);
513 return;
514}
515
516static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };
517static const u8 mts_read_image_sig_len = 4;
518static const unsigned char mts_direction[256/8] = {
519 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
520 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
521 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
522 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
523};
524
525
526#define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
527
528static void
529mts_build_transfer_context( Scsi_Cmnd *srb, struct mts_desc* desc )
530{
531 int pipe;
532 struct scatterlist * sg;
533
534 MTS_DEBUG_GOT_HERE();
535
536 desc->context.instance = desc;
537 desc->context.srb = srb;
538 desc->context.fragment = 0;
539
540 if (!srb->use_sg) {
541 if ( !srb->bufflen ){
542 desc->context.data = NULL;
543 desc->context.data_length = 0;
544 return;
545 } else {
546 desc->context.data = srb->buffer;
547 desc->context.data_length = srb->bufflen;
548 MTS_DEBUG("length = %d or %d\n",
549 srb->request_bufflen, srb->bufflen);
550 }
551 } else {
552 MTS_DEBUG("Using scatter/gather\n");
553 sg = srb->buffer;
554 desc->context.data = page_address(sg[0].page) + sg[0].offset;
555 desc->context.data_length = sg[0].length;
556 }
557
558
559 /* can't rely on srb->sc_data_direction */
560
561 /* Brutally ripped from usb-storage */
562
563 if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )
564) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image);
565 MTS_DEBUG( "transfering from desc->ep_image == %d\n",
566 (int)desc->ep_image );
567 } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
568 pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
569 MTS_DEBUG( "transfering from desc->ep_response == %d\n",
570 (int)desc->ep_response);
571 } else {
572 MTS_DEBUG("transfering to desc->ep_out == %d\n",
573 (int)desc->ep_out);
574 pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
575 }
576 desc->context.data_pipe = pipe;
577}
578
579
580static
581int mts_scsi_queuecommand( Scsi_Cmnd *srb, mts_scsi_cmnd_callback callback )
582{
583 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
584 int err = 0;
585 int res;
586
587 MTS_DEBUG_GOT_HERE();
588 mts_show_command(srb);
589 mts_debug_dump(desc);
590
591 if ( srb->device->lun || srb->device->id || srb->device->channel ) {
592
593 MTS_DEBUG("Command to LUN=%d ID=%d CHANNEL=%d from SCSI layer\n",(int)srb->device->lun,(int)srb->device->id, (int)srb->device->channel );
594
595 MTS_DEBUG("this device doesn't exist\n");
596
597 srb->result = DID_BAD_TARGET << 16;
598
599 if(likely(callback != NULL))
600 callback(srb);
601
602 goto out;
603 }
604
605
606 usb_fill_bulk_urb(desc->urb,
607 desc->usb_dev,
608 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
609 srb->cmnd,
610 srb->cmd_len,
611 mts_command_done,
612 &desc->context
613 );
614
615
616 mts_build_transfer_context( srb, desc );
617 desc->context.final_callback = callback;
618
619 /* here we need ATOMIC as we are called with the iolock */
620 res=usb_submit_urb(desc->urb, GFP_ATOMIC);
621
622 if(unlikely(res)){
623 MTS_ERROR("error %d submitting URB\n",(int)res);
624 srb->result = DID_ERROR << 16;
625
626 if(likely(callback != NULL))
627 callback(srb);
628
629 }
630
631out:
632 return err;
633}
634
635static Scsi_Host_Template mts_scsi_host_template = {
636 .module = THIS_MODULE,
637 .name = "microtekX6",
638 .proc_name = "microtekX6",
639 .queuecommand = mts_scsi_queuecommand,
640 .eh_abort_handler = mts_scsi_abort,
641 .eh_host_reset_handler = mts_scsi_host_reset,
642 .sg_tablesize = SG_ALL,
643 .can_queue = 1,
644 .this_id = -1,
645 .cmd_per_lun = 1,
646 .use_clustering = 1,
647 .emulated = 1,
648};
649
650struct vendor_product
651{
652 char* name;
653 enum
654 {
655 mts_sup_unknown=0,
656 mts_sup_alpha,
657 mts_sup_full
658 }
659 support_status;
660} ;
661
662
663/* These are taken from the msmUSB.inf file on the Windows driver CD */
664const static struct vendor_product mts_supported_products[] =
665{
666 { "Phantom 336CX", mts_sup_unknown},
667 { "Phantom 336CX", mts_sup_unknown},
668 { "Scanmaker X6", mts_sup_alpha},
669 { "Phantom C6", mts_sup_unknown},
670 { "Phantom 336CX", mts_sup_unknown},
671 { "ScanMaker V6USL", mts_sup_unknown},
672 { "ScanMaker V6USL", mts_sup_unknown},
673 { "Scanmaker V6UL", mts_sup_unknown},
674 { "Scanmaker V6UPL", mts_sup_alpha},
675};
676
677/* The entries of microtek_table must correspond, line-by-line to
678 the entries of mts_supported_products[]. */
679
680static struct usb_device_id mts_usb_ids [] =
681{
682 { USB_DEVICE(0x4ce, 0x0300) },
683 { USB_DEVICE(0x5da, 0x0094) },
684 { USB_DEVICE(0x5da, 0x0099) },
685 { USB_DEVICE(0x5da, 0x009a) },
686 { USB_DEVICE(0x5da, 0x00a0) },
687 { USB_DEVICE(0x5da, 0x00a3) },
688 { USB_DEVICE(0x5da, 0x80a3) },
689 { USB_DEVICE(0x5da, 0x80ac) },
690 { USB_DEVICE(0x5da, 0x00b6) },
691 { } /* Terminating entry */
692};
693
694MODULE_DEVICE_TABLE (usb, mts_usb_ids);
695
696
697static int mts_usb_probe(struct usb_interface *intf,
698 const struct usb_device_id *id)
699{
700 int i;
701 int ep_out = -1;
702 int ep_in_set[3]; /* this will break if we have more than three endpoints
703 which is why we check */
704 int *ep_in_current = ep_in_set;
705 int err_retval = -ENOMEM;
706
707 struct mts_desc * new_desc;
708 struct vendor_product const* p;
709 struct usb_device *dev = interface_to_usbdev (intf);
710
711 /* the current altsetting on the interface we're probing */
712 struct usb_host_interface *altsetting;
713
714 MTS_DEBUG_GOT_HERE();
715 MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
716
717 MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
718 le16_to_cpu(dev->descriptor.idProduct),
719 le16_to_cpu(dev->descriptor.idVendor) );
720
721 MTS_DEBUG_GOT_HERE();
722
723 p = &mts_supported_products[id - mts_usb_ids];
724
725 MTS_DEBUG_GOT_HERE();
726
727 MTS_DEBUG( "found model %s\n", p->name );
728 if ( p->support_status != mts_sup_full )
729 MTS_MESSAGE( "model %s is not known to be fully supported, reports welcome!\n",
730 p->name );
731
732 /* the current altsetting on the interface we're probing */
733 altsetting = intf->cur_altsetting;
734
735
736 /* Check if the config is sane */
737
738 if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
739 MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
740 (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
741 return -ENODEV;
742 }
743
744 for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
745 if ((altsetting->endpoint[i].desc.bmAttributes &
746 USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
747
748 MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
749 (int)altsetting->endpoint[i].desc.bEndpointAddress );
750 } else {
751 if (altsetting->endpoint[i].desc.bEndpointAddress &
752 USB_DIR_IN)
753 *ep_in_current++
754 = altsetting->endpoint[i].desc.bEndpointAddress &
755 USB_ENDPOINT_NUMBER_MASK;
756 else {
757 if ( ep_out != -1 ) {
758 MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
759 return -ENODEV;
760 }
761
762 ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
763 USB_ENDPOINT_NUMBER_MASK;
764 }
765 }
766
767 }
768
769
770 if ( ep_out == -1 ) {
771 MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
772 return -ENODEV;
773 }
774
775
776 new_desc = kmalloc(sizeof(struct mts_desc), GFP_KERNEL);
777 if (!new_desc)
778 goto out;
779
780 memset(new_desc, 0, sizeof(*new_desc));
781 new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
782 if (!new_desc->urb)
783 goto out_kfree;
784
785 new_desc->usb_dev = dev;
786 new_desc->usb_intf = intf;
787 init_MUTEX(&new_desc->lock);
788
789 /* endpoints */
790 new_desc->ep_out = ep_out;
791 new_desc->ep_response = ep_in_set[0];
792 new_desc->ep_image = ep_in_set[1];
793
794 if ( new_desc->ep_out != MTS_EP_OUT )
795 MTS_WARNING( "will this work? Command EP is not usually %d\n",
796 (int)new_desc->ep_out );
797
798 if ( new_desc->ep_response != MTS_EP_RESPONSE )
799 MTS_WARNING( "will this work? Response EP is not usually %d\n",
800 (int)new_desc->ep_response );
801
802 if ( new_desc->ep_image != MTS_EP_IMAGE )
803 MTS_WARNING( "will this work? Image data EP is not usually %d\n",
804 (int)new_desc->ep_image );
805
806 new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
807 sizeof(new_desc));
808 if (!new_desc->host)
809 goto out_free_urb;
810
811 new_desc->host->hostdata[0] = (unsigned long)new_desc;
812 if (scsi_add_host(new_desc->host, NULL)) {
813 err_retval = -EIO;
814 goto out_free_urb;
815 }
816 scsi_scan_host(new_desc->host);
817
818 usb_set_intfdata(intf, new_desc);
819 return 0;
820
821 out_free_urb:
822 usb_free_urb(new_desc->urb);
823 out_kfree:
824 kfree(new_desc);
825 out:
826 return err_retval;
827}
828
829static void mts_usb_disconnect (struct usb_interface *intf)
830{
831 struct mts_desc *desc = usb_get_intfdata(intf);
832
833 usb_set_intfdata(intf, NULL);
834
835 usb_kill_urb(desc->urb);
836 scsi_remove_host(desc->host);
837
838 scsi_host_put(desc->host);
839 usb_free_urb(desc->urb);
840 kfree(desc);
841}
842
843
844static int __init microtek_drv_init(void)
845{
846 return usb_register(&mts_usb_driver);
847}
848
849static void __exit microtek_drv_exit(void)
850{
851 usb_deregister(&mts_usb_driver);
852}
853
854module_init(microtek_drv_init);
855module_exit(microtek_drv_exit);
856
857MODULE_AUTHOR( DRIVER_AUTHOR );
858MODULE_DESCRIPTION( DRIVER_DESC );
859MODULE_LICENSE("GPL");
860
861
kernel source for telekom puls (alcatel/mediatek)