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Greg Kroah-Hartman5fd54ac2017-11-03 11:28:30 +01001// SPDX-License-Identifier: GPL-2.0
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/* Driver for Microtek Scanmaker X6 USB scanner, and possibly others.
3 *
4 * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com>
5 * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
6 *
7 * Parts shamelessly stolen from usb-storage and copyright by their
8 * authors. Thanks to Matt Dharm for giving us permission!
9 *
10 * This driver implements a SCSI host controller driver and a USB
11 * device driver. To avoid confusion, all the USB related stuff is
12 * prefixed by mts_usb_ and all the SCSI stuff by mts_scsi_.
13 *
14 * Microtek (www.microtek.com) did not release the specifications for
15 * their USB protocol to us, so we had to reverse engineer them. We
16 * don't know for which models they are valid.
17 *
18 * The X6 USB has three bulk endpoints, one output (0x1) down which
19 * commands and outgoing data are sent, and two input: 0x82 from which
20 * normal data is read from the scanner (in packets of maximum 32
21 * bytes) and from which the status byte is read, and 0x83 from which
22 * the results of a scan (or preview) are read in up to 64 * 1024 byte
23 * chunks by the Windows driver. We don't know how much it is possible
24 * to read at a time from 0x83.
25 *
26 * It seems possible to read (with URB transfers) everything from 0x82
27 * in one go, without bothering to read in 32 byte chunks.
28 *
29 * There seems to be an optimisation of a further READ implicit if
30 * you simply read from 0x83.
31 *
32 * Guessed protocol:
33 *
34 * Send raw SCSI command to EP 0x1
35 *
36 * If there is data to receive:
37 * If the command was READ datatype=image:
38 * Read a lot of data from EP 0x83
39 * Else:
40 * Read data from EP 0x82
41 * Else:
42 * If there is data to transmit:
43 * Write it to EP 0x1
44 *
45 * Read status byte from EP 0x82
46 *
47 * References:
48 *
49 * The SCSI command set for the scanner is available from
50 * ftp://ftp.microtek.com/microtek/devpack/
51 *
52 * Microtek NV sent us a more up to date version of the document. If
53 * you want it, just send mail.
54 *
55 * Status:
56 *
57 * Untested with multiple scanners.
58 * Untested on SMP.
59 * Untested on a bigendian machine.
60 *
61 * History:
62 *
63 * 20000417 starting history
64 * 20000417 fixed load oops
65 * 20000417 fixed unload oops
66 * 20000419 fixed READ IMAGE detection
67 * 20000424 started conversion to use URBs
68 * 20000502 handled short transfers as errors
69 * 20000513 rename and organisation of functions (john)
70 * 20000513 added IDs for all products supported by Windows driver (john)
71 * 20000514 Rewrote mts_scsi_queuecommand to use URBs (john)
72 * 20000514 Version 0.0.8j
Lucas De Marchi25985ed2011-03-30 22:57:33 -030073 * 20000514 Fix reporting of non-existent devices to SCSI layer (john)
Linus Torvalds1da177e2005-04-16 15:20:36 -070074 * 20000514 Added MTS_DEBUG_INT (john)
75 * 20000514 Changed "usb-microtek" to "microtek" for consistency (john)
76 * 20000514 Stupid bug fixes (john)
77 * 20000514 Version 0.0.9j
78 * 20000515 Put transfer context and URB in mts_desc (john)
79 * 20000515 Added prelim turn off debugging support (john)
80 * 20000515 Version 0.0.10j
81 * 20000515 Fixed up URB allocation (clear URB on alloc) (john)
82 * 20000515 Version 0.0.11j
83 * 20000516 Removed unnecessary spinlock in mts_transfer_context (john)
84 * 20000516 Removed unnecessary up on instance lock in mts_remove_nolock (john)
85 * 20000516 Implemented (badly) scsi_abort (john)
86 * 20000516 Version 0.0.12j
87 * 20000517 Hopefully removed mts_remove_nolock quasideadlock (john)
88 * 20000517 Added mts_debug_dump to print ll USB info (john)
89 * 20000518 Tweaks and documentation updates (john)
90 * 20000518 Version 0.0.13j
91 * 20000518 Cleaned up abort handling (john)
92 * 20000523 Removed scsi_command and various scsi_..._resets (john)
93 * 20000523 Added unlink URB on scsi_abort, now OHCI supports it (john)
94 * 20000523 Fixed last tiresome compile warning (john)
95 * 20000523 Version 0.0.14j (though version 0.1 has come out?)
96 * 20000602 Added primitive reset
97 * 20000602 Version 0.2.0
98 * 20000603 various cosmetic changes
99 * 20000603 Version 0.2.1
100 * 20000620 minor cosmetic changes
101 * 20000620 Version 0.2.2
102 * 20000822 Hopefully fixed deadlock in mts_remove_nolock()
103 * 20000822 Fixed minor race in mts_transfer_cleanup()
104 * 20000822 Fixed deadlock on submission error in queuecommand
105 * 20000822 Version 0.2.3
106 * 20000913 Reduced module size if debugging is off
107 * 20000913 Version 0.2.4
108 * 20010210 New abort logic
109 * 20010210 Version 0.3.0
110 * 20010217 Merged scatter/gather
111 * 20010218 Version 0.4.0
112 * 20010218 Cosmetic fixes
113 * 20010218 Version 0.4.1
114 * 20010306 Abort while using scatter/gather
115 * 20010306 Version 0.4.2
116 * 20010311 Remove all timeouts and tidy up generally (john)
117 * 20010320 check return value of scsi_register()
118 * 20010320 Version 0.4.3
119 * 20010408 Identify version on module load.
120 * 20011003 Fix multiple requests
121 */
122
123#include <linux/module.h>
124#include <linux/kernel.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125#include <linux/signal.h>
126#include <linux/errno.h>
127#include <linux/random.h>
128#include <linux/poll.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129#include <linux/slab.h>
130#include <linux/spinlock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#include <linux/usb.h>
132#include <linux/proc_fs.h>
133
Arun Sharma600634972011-07-26 16:09:06 -0700134#include <linux/atomic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135#include <linux/blkdev.h>
136#include "../../scsi/scsi.h"
137#include <scsi/scsi_host.h>
138
139#include "microtek.h"
140
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141#define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>"
142#define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver"
143
144/* Should we do debugging? */
145
146//#define MTS_DO_DEBUG
147
148/* USB layer driver interface */
149
150static int mts_usb_probe(struct usb_interface *intf,
151 const struct usb_device_id *id);
152static void mts_usb_disconnect(struct usb_interface *intf);
153
Németh Márton90521272010-01-10 15:34:36 +0100154static const struct usb_device_id mts_usb_ids[];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155
156static struct usb_driver mts_usb_driver = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700157 .name = "microtekX6",
158 .probe = mts_usb_probe,
159 .disconnect = mts_usb_disconnect,
160 .id_table = mts_usb_ids,
161};
162
163
164/* Internal driver stuff */
165
166#define MTS_VERSION "0.4.3"
167#define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
168
169#define MTS_WARNING(x...) \
170 printk( KERN_WARNING MTS_NAME x )
171#define MTS_ERROR(x...) \
172 printk( KERN_ERR MTS_NAME x )
173#define MTS_INT_ERROR(x...) \
174 MTS_ERROR(x)
175#define MTS_MESSAGE(x...) \
176 printk( KERN_INFO MTS_NAME x )
177
178#if defined MTS_DO_DEBUG
179
180#define MTS_DEBUG(x...) \
181 printk( KERN_DEBUG MTS_NAME x )
182
183#define MTS_DEBUG_GOT_HERE() \
Harvey Harrison96e12fc2008-04-04 14:28:01 -0700184 MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __func__ )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185#define MTS_DEBUG_INT() \
186 do { MTS_DEBUG_GOT_HERE(); \
187 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700188 MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)transfer->actual_length ); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 mts_debug_dump(context->instance);\
190 } while(0)
191#else
192
193#define MTS_NUL_STATEMENT do { } while(0)
194
195#define MTS_DEBUG(x...) MTS_NUL_STATEMENT
196#define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT
197#define MTS_DEBUG_INT() MTS_NUL_STATEMENT
198
199#endif
200
201
202
203#define MTS_INT_INIT()\
204 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
205 MTS_DEBUG_INT();\
206
207#ifdef MTS_DO_DEBUG
208
209static inline void mts_debug_dump(struct mts_desc* desc) {
210 MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n",
211 (int)desc,
212 (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
213 );
214 MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n",
215 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
216 usb_rcvbulkpipe(desc->usb_dev,desc->ep_response),
217 usb_rcvbulkpipe(desc->usb_dev,desc->ep_image)
218 );
219}
220
221
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700222static inline void mts_show_command(struct scsi_cmnd *srb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700223{
224 char *what = NULL;
225
226 switch (srb->cmnd[0]) {
227 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
228 case REZERO_UNIT: what = "REZERO_UNIT"; break;
229 case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
230 case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
231 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
232 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
233 case READ_6: what = "READ_6"; break;
234 case WRITE_6: what = "WRITE_6"; break;
235 case SEEK_6: what = "SEEK_6"; break;
236 case READ_REVERSE: what = "READ_REVERSE"; break;
237 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
238 case SPACE: what = "SPACE"; break;
239 case INQUIRY: what = "INQUIRY"; break;
240 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
241 case MODE_SELECT: what = "MODE_SELECT"; break;
242 case RESERVE: what = "RESERVE"; break;
243 case RELEASE: what = "RELEASE"; break;
244 case COPY: what = "COPY"; break;
245 case ERASE: what = "ERASE"; break;
246 case MODE_SENSE: what = "MODE_SENSE"; break;
247 case START_STOP: what = "START_STOP"; break;
248 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
249 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
250 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
251 case SET_WINDOW: what = "SET_WINDOW"; break;
252 case READ_CAPACITY: what = "READ_CAPACITY"; break;
253 case READ_10: what = "READ_10"; break;
254 case WRITE_10: what = "WRITE_10"; break;
255 case SEEK_10: what = "SEEK_10"; break;
256 case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
257 case VERIFY: what = "VERIFY"; break;
258 case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
259 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
260 case SEARCH_LOW: what = "SEARCH_LOW"; break;
261 case SET_LIMITS: what = "SET_LIMITS"; break;
262 case READ_POSITION: what = "READ_POSITION"; break;
263 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
264 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
265 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
266 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
267 case COMPARE: what = "COMPARE"; break;
268 case COPY_VERIFY: what = "COPY_VERIFY"; break;
269 case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
270 case READ_BUFFER: what = "READ_BUFFER"; break;
271 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
272 case READ_LONG: what = "READ_LONG"; break;
273 case WRITE_LONG: what = "WRITE_LONG"; break;
274 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
275 case WRITE_SAME: what = "WRITE_SAME"; break;
276 case READ_TOC: what = "READ_TOC"; break;
277 case LOG_SELECT: what = "LOG_SELECT"; break;
278 case LOG_SENSE: what = "LOG_SENSE"; break;
279 case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
280 case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
281 case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break;
282 case READ_12: what = "READ_12"; break;
283 case WRITE_12: what = "WRITE_12"; break;
284 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
285 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
286 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
287 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
288 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
289 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
290 case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
291 default:
292 MTS_DEBUG("can't decode command\n");
293 goto out;
294 break;
295 }
296 MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
297
298 out:
Andy Shevchenko78a629e2014-12-29 14:35:28 +0200299 MTS_DEBUG( " %10ph\n", srb->cmnd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300}
301
302#else
303
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700304static inline void mts_show_command(struct scsi_cmnd * dummy)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305{
306}
307
308static inline void mts_debug_dump(struct mts_desc* dummy)
309{
310}
311
312#endif
313
314static inline void mts_urb_abort(struct mts_desc* desc) {
315 MTS_DEBUG_GOT_HERE();
316 mts_debug_dump(desc);
317
318 usb_kill_urb( desc->urb );
319}
320
Oliver Neukum9142d592005-11-17 09:47:41 -0800321static int mts_slave_alloc (struct scsi_device *s)
322{
323 s->inquiry_len = 0x24;
324 return 0;
325}
326
327static int mts_slave_configure (struct scsi_device *s)
328{
329 blk_queue_dma_alignment(s->request_queue, (512 - 1));
330 return 0;
331}
332
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700333static int mts_scsi_abort(struct scsi_cmnd *srb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334{
335 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
336
337 MTS_DEBUG_GOT_HERE();
338
339 mts_urb_abort(desc);
340
Hideaki YOSHIFUJI275cfdf2005-04-22 15:06:58 -0700341 return FAILED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342}
343
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700344static int mts_scsi_host_reset(struct scsi_cmnd *srb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345{
346 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
Alan Stern011b15d2008-11-04 11:29:27 -0500347 int result;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348
349 MTS_DEBUG_GOT_HERE();
350 mts_debug_dump(desc);
351
Alan Stern011b15d2008-11-04 11:29:27 -0500352 result = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
353 if (result == 0) {
354 result = usb_reset_device(desc->usb_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 usb_unlock_device(desc->usb_dev);
Alan Stern011b15d2008-11-04 11:29:27 -0500356 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return result ? FAILED : SUCCESS;
358}
359
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700360static int
Jeff Garzikf2812332010-11-16 02:10:29 -0500361mts_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *srb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
363static void mts_transfer_cleanup( struct urb *transfer );
David Howells7d12e782006-10-05 14:55:46 +0100364static void mts_do_sg(struct urb * transfer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365
Jesper Juhl77933d72005-07-27 11:46:09 -0700366static inline
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367void mts_int_submit_urb (struct urb* transfer,
368 int pipe,
369 void* data,
370 unsigned length,
371 usb_complete_t callback )
372/* Interrupt context! */
373
374/* Holding transfer->context->lock! */
375{
376 int res;
377
378 MTS_INT_INIT();
379
380 usb_fill_bulk_urb(transfer,
381 context->instance->usb_dev,
382 pipe,
383 data,
384 length,
385 callback,
386 context
387 );
388
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 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 );
Oliver Neukumbe171e42020-09-16 12:03:02 +0200392 set_host_byte(context->srb, DID_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 mts_transfer_cleanup(transfer);
394 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395}
396
397
398static void mts_transfer_cleanup( struct urb *transfer )
399/* Interrupt context! */
400{
401 MTS_INT_INIT();
402
403 if ( likely(context->final_callback != NULL) )
404 context->final_callback(context->srb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405}
406
David Howells7d12e782006-10-05 14:55:46 +0100407static void mts_transfer_done( struct urb *transfer )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408{
409 MTS_INT_INIT();
410
411 context->srb->result &= MTS_SCSI_ERR_MASK;
Oliver Neukum9142d592005-11-17 09:47:41 -0800412 context->srb->result |= (unsigned)(*context->scsi_status)<<1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413
414 mts_transfer_cleanup(transfer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415}
416
417
418static void mts_get_status( struct urb *transfer )
419/* Interrupt context! */
420{
421 MTS_INT_INIT();
422
423 mts_int_submit_urb(transfer,
424 usb_rcvbulkpipe(context->instance->usb_dev,
425 context->instance->ep_response),
Oliver Neukum9142d592005-11-17 09:47:41 -0800426 context->scsi_status,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427 1,
428 mts_transfer_done );
429}
430
David Howells7d12e782006-10-05 14:55:46 +0100431static void mts_data_done( struct urb* transfer )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700432/* Interrupt context! */
433{
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700434 int status = transfer->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435 MTS_INT_INIT();
436
437 if ( context->data_length != transfer->actual_length ) {
Boaz Harroshafd9a032007-07-12 16:11:24 +0300438 scsi_set_resid(context->srb, context->data_length -
439 transfer->actual_length);
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700440 } else if ( unlikely(status) ) {
Oliver Neukumbe171e42020-09-16 12:03:02 +0200441 set_host_byte(context->srb, (status == -ENOENT ? DID_ABORT : DID_ERROR));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 }
443
444 mts_get_status(transfer);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445}
446
447
David Howells7d12e782006-10-05 14:55:46 +0100448static void mts_command_done( struct urb *transfer )
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449/* Interrupt context! */
450{
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700451 int status = transfer->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 MTS_INT_INIT();
453
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700454 if ( unlikely(status) ) {
455 if (status == -ENOENT) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 /* We are being killed */
457 MTS_DEBUG_GOT_HERE();
Oliver Neukumbe171e42020-09-16 12:03:02 +0200458 set_host_byte(context->srb, DID_ABORT);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 } else {
460 /* A genuine error has occurred */
461 MTS_DEBUG_GOT_HERE();
462
Oliver Neukumbe171e42020-09-16 12:03:02 +0200463 set_host_byte(context->srb, DID_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 }
465 mts_transfer_cleanup(transfer);
466
467 return;
468 }
469
470 if (context->srb->cmnd[0] == REQUEST_SENSE) {
471 mts_int_submit_urb(transfer,
472 context->data_pipe,
473 context->srb->sense_buffer,
474 context->data_length,
475 mts_data_done);
476 } else { if ( context->data ) {
477 mts_int_submit_urb(transfer,
478 context->data_pipe,
479 context->data,
480 context->data_length,
Boaz Harroshafd9a032007-07-12 16:11:24 +0300481 scsi_sg_count(context->srb) > 1 ?
482 mts_do_sg : mts_data_done);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 } else {
484 mts_get_status(transfer);
485 }
486 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700487}
488
David Howells7d12e782006-10-05 14:55:46 +0100489static void mts_do_sg (struct urb* transfer)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490{
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700491 int status = transfer->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 MTS_INT_INIT();
493
Boaz Harroshafd9a032007-07-12 16:11:24 +0300494 MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,
495 scsi_sg_count(context->srb));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700496
Greg Kroah-Hartmanb44cd112007-07-18 10:58:02 -0700497 if (unlikely(status)) {
Oliver Neukumbe171e42020-09-16 12:03:02 +0200498 set_host_byte(context->srb, (status == -ENOENT ? DID_ABORT : DID_ERROR));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700499 mts_transfer_cleanup(transfer);
500 }
501
Ming Lei1194b5c2019-06-18 09:37:48 +0800502 context->curr_sg = sg_next(context->curr_sg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503 mts_int_submit_urb(transfer,
504 context->data_pipe,
Ming Lei1194b5c2019-06-18 09:37:48 +0800505 sg_virt(context->curr_sg),
506 context->curr_sg->length,
507 sg_is_last(context->curr_sg) ?
Boaz Harroshafd9a032007-07-12 16:11:24 +0300508 mts_data_done : mts_do_sg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509}
510
511static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };
512static const u8 mts_read_image_sig_len = 4;
513static const unsigned char mts_direction[256/8] = {
514 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
515 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
516 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
517 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
518};
519
520
521#define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
522
523static void
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700524mts_build_transfer_context(struct scsi_cmnd *srb, struct mts_desc* desc)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525{
526 int pipe;
Ming Lei1194b5c2019-06-18 09:37:48 +0800527
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 MTS_DEBUG_GOT_HERE();
529
530 desc->context.instance = desc;
531 desc->context.srb = srb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700532
Boaz Harroshafd9a032007-07-12 16:11:24 +0300533 if (!scsi_bufflen(srb)) {
534 desc->context.data = NULL;
535 desc->context.data_length = 0;
536 return;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537 } else {
Ming Lei1194b5c2019-06-18 09:37:48 +0800538 desc->context.curr_sg = scsi_sglist(srb);
539 desc->context.data = sg_virt(desc->context.curr_sg);
540 desc->context.data_length = desc->context.curr_sg->length;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541 }
542
543
544 /* can't rely on srb->sc_data_direction */
545
546 /* Brutally ripped from usb-storage */
547
548 if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )
549) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image);
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300550 MTS_DEBUG( "transferring from desc->ep_image == %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551 (int)desc->ep_image );
552 } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
553 pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300554 MTS_DEBUG( "transferring from desc->ep_response == %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 (int)desc->ep_response);
556 } else {
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300557 MTS_DEBUG("transferring to desc->ep_out == %d\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700558 (int)desc->ep_out);
559 pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
560 }
561 desc->context.data_pipe = pipe;
562}
563
564
Henrik Kretzschmar0eebe6a2006-09-25 17:00:58 -0700565static int
Jeff Garzikf2812332010-11-16 02:10:29 -0500566mts_scsi_queuecommand_lck(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567{
568 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 int res;
570
571 MTS_DEBUG_GOT_HERE();
572 mts_show_command(srb);
573 mts_debug_dump(desc);
574
575 if ( srb->device->lun || srb->device->id || srb->device->channel ) {
576
577 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 );
578
579 MTS_DEBUG("this device doesn't exist\n");
580
Oliver Neukumbe171e42020-09-16 12:03:02 +0200581 set_host_byte(srb, DID_BAD_TARGET);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700582
583 if(likely(callback != NULL))
584 callback(srb);
585
586 goto out;
587 }
588
589
590 usb_fill_bulk_urb(desc->urb,
591 desc->usb_dev,
592 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
593 srb->cmnd,
594 srb->cmd_len,
595 mts_command_done,
596 &desc->context
597 );
598
599
600 mts_build_transfer_context( srb, desc );
601 desc->context.final_callback = callback;
602
603 /* here we need ATOMIC as we are called with the iolock */
604 res=usb_submit_urb(desc->urb, GFP_ATOMIC);
605
606 if(unlikely(res)){
607 MTS_ERROR("error %d submitting URB\n",(int)res);
Oliver Neukumbe171e42020-09-16 12:03:02 +0200608 set_host_byte(srb, DID_ERROR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
610 if(likely(callback != NULL))
611 callback(srb);
612
613 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700614out:
Saurav Girepunjea570ec72019-10-05 11:19:35 +0530615 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700616}
617
Jeff Garzikf2812332010-11-16 02:10:29 -0500618static DEF_SCSI_QCMD(mts_scsi_queuecommand)
619
Christoph Hellwigd0be4a7d2005-10-31 18:31:40 +0100620static struct scsi_host_template mts_scsi_host_template = {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 .module = THIS_MODULE,
622 .name = "microtekX6",
623 .proc_name = "microtekX6",
624 .queuecommand = mts_scsi_queuecommand,
625 .eh_abort_handler = mts_scsi_abort,
626 .eh_host_reset_handler = mts_scsi_host_reset,
627 .sg_tablesize = SG_ALL,
628 .can_queue = 1,
629 .this_id = -1,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700630 .emulated = 1,
Oliver Neukum9142d592005-11-17 09:47:41 -0800631 .slave_alloc = mts_slave_alloc,
632 .slave_configure = mts_slave_configure,
633 .max_sectors= 256, /* 128 K */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634};
635
Linus Torvalds1da177e2005-04-16 15:20:36 -0700636/* The entries of microtek_table must correspond, line-by-line to
637 the entries of mts_supported_products[]. */
638
Németh Márton90521272010-01-10 15:34:36 +0100639static const struct usb_device_id mts_usb_ids[] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700640{
641 { USB_DEVICE(0x4ce, 0x0300) },
642 { USB_DEVICE(0x5da, 0x0094) },
643 { USB_DEVICE(0x5da, 0x0099) },
644 { USB_DEVICE(0x5da, 0x009a) },
645 { USB_DEVICE(0x5da, 0x00a0) },
646 { USB_DEVICE(0x5da, 0x00a3) },
647 { USB_DEVICE(0x5da, 0x80a3) },
648 { USB_DEVICE(0x5da, 0x80ac) },
649 { USB_DEVICE(0x5da, 0x00b6) },
650 { } /* Terminating entry */
651};
652
653MODULE_DEVICE_TABLE (usb, mts_usb_ids);
654
655
656static int mts_usb_probe(struct usb_interface *intf,
657 const struct usb_device_id *id)
658{
659 int i;
660 int ep_out = -1;
661 int ep_in_set[3]; /* this will break if we have more than three endpoints
662 which is why we check */
663 int *ep_in_current = ep_in_set;
664 int err_retval = -ENOMEM;
665
666 struct mts_desc * new_desc;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 struct usb_device *dev = interface_to_usbdev (intf);
668
669 /* the current altsetting on the interface we're probing */
670 struct usb_host_interface *altsetting;
671
672 MTS_DEBUG_GOT_HERE();
673 MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
674
675 MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
676 le16_to_cpu(dev->descriptor.idProduct),
677 le16_to_cpu(dev->descriptor.idVendor) );
678
679 MTS_DEBUG_GOT_HERE();
680
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 /* the current altsetting on the interface we're probing */
682 altsetting = intf->cur_altsetting;
683
684
685 /* Check if the config is sane */
686
687 if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
688 MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
689 (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
690 return -ENODEV;
691 }
692
693 for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
694 if ((altsetting->endpoint[i].desc.bmAttributes &
695 USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
696
697 MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
698 (int)altsetting->endpoint[i].desc.bEndpointAddress );
699 } else {
700 if (altsetting->endpoint[i].desc.bEndpointAddress &
701 USB_DIR_IN)
702 *ep_in_current++
703 = altsetting->endpoint[i].desc.bEndpointAddress &
704 USB_ENDPOINT_NUMBER_MASK;
705 else {
706 if ( ep_out != -1 ) {
707 MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
708 return -ENODEV;
709 }
710
711 ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
712 USB_ENDPOINT_NUMBER_MASK;
713 }
714 }
715
716 }
717
Johan Hovold177238c2019-10-03 09:09:31 +0200718 if (ep_in_current != &ep_in_set[2]) {
719 MTS_WARNING("couldn't find two input bulk endpoints. Bailing out.\n");
720 return -ENODEV;
721 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722
723 if ( ep_out == -1 ) {
724 MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
725 return -ENODEV;
726 }
Oliver Neukum9142d592005-11-17 09:47:41 -0800727
728
Oliver Neukum61eded62005-10-24 22:37:20 +0200729 new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 if (!new_desc)
731 goto out;
732
Linus Torvalds1da177e2005-04-16 15:20:36 -0700733 new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
734 if (!new_desc->urb)
735 goto out_kfree;
736
Oliver Neukum9142d592005-11-17 09:47:41 -0800737 new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
738 if (!new_desc->context.scsi_status)
Mariusz Kozlowskia3b1f502006-11-17 11:53:23 +0100739 goto out_free_urb;
Oliver Neukum9142d592005-11-17 09:47:41 -0800740
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 new_desc->usb_dev = dev;
742 new_desc->usb_intf = intf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743
744 /* endpoints */
745 new_desc->ep_out = ep_out;
746 new_desc->ep_response = ep_in_set[0];
747 new_desc->ep_image = ep_in_set[1];
748
749 if ( new_desc->ep_out != MTS_EP_OUT )
750 MTS_WARNING( "will this work? Command EP is not usually %d\n",
751 (int)new_desc->ep_out );
752
753 if ( new_desc->ep_response != MTS_EP_RESPONSE )
754 MTS_WARNING( "will this work? Response EP is not usually %d\n",
755 (int)new_desc->ep_response );
756
757 if ( new_desc->ep_image != MTS_EP_IMAGE )
758 MTS_WARNING( "will this work? Image data EP is not usually %d\n",
759 (int)new_desc->ep_image );
760
761 new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
762 sizeof(new_desc));
763 if (!new_desc->host)
Mariusz Kozlowskia3b1f502006-11-17 11:53:23 +0100764 goto out_kfree2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765
766 new_desc->host->hostdata[0] = (unsigned long)new_desc;
Oliver Neukum5cf19732007-11-12 14:08:43 +0100767 if (scsi_add_host(new_desc->host, &dev->dev)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 err_retval = -EIO;
Mariusz Kozlowskia3b1f502006-11-17 11:53:23 +0100769 goto out_host_put;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 }
771 scsi_scan_host(new_desc->host);
772
773 usb_set_intfdata(intf, new_desc);
774 return 0;
775
Mariusz Kozlowskia3b1f502006-11-17 11:53:23 +0100776 out_host_put:
777 scsi_host_put(new_desc->host);
Oliver Neukum9142d592005-11-17 09:47:41 -0800778 out_kfree2:
779 kfree(new_desc->context.scsi_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 out_free_urb:
781 usb_free_urb(new_desc->urb);
782 out_kfree:
783 kfree(new_desc);
784 out:
785 return err_retval;
786}
787
788static void mts_usb_disconnect (struct usb_interface *intf)
789{
790 struct mts_desc *desc = usb_get_intfdata(intf);
791
792 usb_set_intfdata(intf, NULL);
793
794 usb_kill_urb(desc->urb);
795 scsi_remove_host(desc->host);
796
797 scsi_host_put(desc->host);
798 usb_free_urb(desc->urb);
Oliver Neukum9142d592005-11-17 09:47:41 -0800799 kfree(desc->context.scsi_status);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800 kfree(desc);
801}
802
Greg Kroah-Hartman65db4302011-11-18 09:34:02 -0800803module_usb_driver(mts_usb_driver);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804
805MODULE_AUTHOR( DRIVER_AUTHOR );
806MODULE_DESCRIPTION( DRIVER_DESC );
807MODULE_LICENSE("GPL");