1 /* Driver for Microtek Scanmaker X6 USB scanner, and possibly others.
3 * (C) Copyright 2000 John Fremlin <vii@penguinpowered.com>
4 * (C) Copyright 2000 Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>
6 * Parts shamelessly stolen from usb-storage and copyright by their
7 * authors. Thanks to Matt Dharm for giving us permission!
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_.
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.
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.
25 * It seems possible to read (with URB transfers) everything from 0x82
26 * in one go, without bothering to read in 32 byte chunks.
28 * There seems to be an optimisation of a further READ implicit if
29 * you simply read from 0x83.
33 * Send raw SCSI command to EP 0x1
35 * If there is data to receive:
36 * If the command was READ datatype=image:
37 * Read a lot of data from EP 0x83
39 * Read data from EP 0x82
41 * If there is data to transmit:
44 * Read status byte from EP 0x82
48 * The SCSI command set for the scanner is available from
49 * ftp://ftp.microtek.com/microtek/devpack/
51 * Microtek NV sent us a more up to date version of the document. If
52 * you want it, just send mail.
56 * Untested with multiple scanners.
58 * Untested on a bigendian machine.
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
122 #include <linux/module.h>
123 #include <linux/kernel.h>
124 #include <linux/signal.h>
125 #include <linux/errno.h>
126 #include <linux/random.h>
127 #include <linux/poll.h>
128 #include <linux/init.h>
129 #include <linux/slab.h>
130 #include <linux/spinlock.h>
131 #include <linux/usb.h>
132 #include <linux/proc_fs.h>
134 #include <asm/atomic.h>
135 #include <linux/blkdev.h>
136 #include "../../scsi/scsi.h"
137 #include <scsi/scsi_host.h>
139 #include "microtek.h"
142 * Version Information
144 #define DRIVER_VERSION "v0.4.3"
145 #define DRIVER_AUTHOR "John Fremlin <vii@penguinpowered.com>, Oliver Neukum <Oliver.Neukum@lrz.uni-muenchen.de>"
146 #define DRIVER_DESC "Microtek Scanmaker X6 USB scanner driver"
148 /* Should we do debugging? */
150 //#define MTS_DO_DEBUG
152 /* USB layer driver interface */
154 static int mts_usb_probe(struct usb_interface *intf,
155 const struct usb_device_id *id);
156 static void mts_usb_disconnect(struct usb_interface *intf);
158 static struct usb_device_id mts_usb_ids [];
160 static struct usb_driver mts_usb_driver = {
161 .name = "microtekX6",
162 .probe = mts_usb_probe,
163 .disconnect = mts_usb_disconnect,
164 .id_table = mts_usb_ids,
168 /* Internal driver stuff */
170 #define MTS_VERSION "0.4.3"
171 #define MTS_NAME "microtek usb (rev " MTS_VERSION "): "
173 #define MTS_WARNING(x...) \
174 printk( KERN_WARNING MTS_NAME x )
175 #define MTS_ERROR(x...) \
176 printk( KERN_ERR MTS_NAME x )
177 #define MTS_INT_ERROR(x...) \
179 #define MTS_MESSAGE(x...) \
180 printk( KERN_INFO MTS_NAME x )
182 #if defined MTS_DO_DEBUG
184 #define MTS_DEBUG(x...) \
185 printk( KERN_DEBUG MTS_NAME x )
187 #define MTS_DEBUG_GOT_HERE() \
188 MTS_DEBUG("got to %s:%d (%s)\n", __FILE__, (int)__LINE__, __PRETTY_FUNCTION__ )
189 #define MTS_DEBUG_INT() \
190 do { MTS_DEBUG_GOT_HERE(); \
191 MTS_DEBUG("transfer = 0x%x context = 0x%x\n",(int)transfer,(int)context ); \
192 MTS_DEBUG("status = 0x%x data-length = 0x%x sent = 0x%x\n",transfer->status,(int)context->data_length, (int)transfer->actual_length ); \
193 mts_debug_dump(context->instance);\
197 #define MTS_NUL_STATEMENT do { } while(0)
199 #define MTS_DEBUG(x...) MTS_NUL_STATEMENT
200 #define MTS_DEBUG_GOT_HERE() MTS_NUL_STATEMENT
201 #define MTS_DEBUG_INT() MTS_NUL_STATEMENT
207 #define MTS_INT_INIT()\
208 struct mts_transfer_context* context = (struct mts_transfer_context*)transfer->context; \
213 static inline void mts_debug_dump(struct mts_desc* desc) {
214 MTS_DEBUG("desc at 0x%x: toggle = %02x%02x\n",
216 (int)desc->usb_dev->toggle[1],(int)desc->usb_dev->toggle[0]
218 MTS_DEBUG("ep_out=%x ep_response=%x ep_image=%x\n",
219 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
220 usb_rcvbulkpipe(desc->usb_dev,desc->ep_response),
221 usb_rcvbulkpipe(desc->usb_dev,desc->ep_image)
226 static inline void mts_show_command(struct scsi_cmnd *srb)
230 switch (srb->cmnd[0]) {
231 case TEST_UNIT_READY: what = "TEST_UNIT_READY"; break;
232 case REZERO_UNIT: what = "REZERO_UNIT"; break;
233 case REQUEST_SENSE: what = "REQUEST_SENSE"; break;
234 case FORMAT_UNIT: what = "FORMAT_UNIT"; break;
235 case READ_BLOCK_LIMITS: what = "READ_BLOCK_LIMITS"; break;
236 case REASSIGN_BLOCKS: what = "REASSIGN_BLOCKS"; break;
237 case READ_6: what = "READ_6"; break;
238 case WRITE_6: what = "WRITE_6"; break;
239 case SEEK_6: what = "SEEK_6"; break;
240 case READ_REVERSE: what = "READ_REVERSE"; break;
241 case WRITE_FILEMARKS: what = "WRITE_FILEMARKS"; break;
242 case SPACE: what = "SPACE"; break;
243 case INQUIRY: what = "INQUIRY"; break;
244 case RECOVER_BUFFERED_DATA: what = "RECOVER_BUFFERED_DATA"; break;
245 case MODE_SELECT: what = "MODE_SELECT"; break;
246 case RESERVE: what = "RESERVE"; break;
247 case RELEASE: what = "RELEASE"; break;
248 case COPY: what = "COPY"; break;
249 case ERASE: what = "ERASE"; break;
250 case MODE_SENSE: what = "MODE_SENSE"; break;
251 case START_STOP: what = "START_STOP"; break;
252 case RECEIVE_DIAGNOSTIC: what = "RECEIVE_DIAGNOSTIC"; break;
253 case SEND_DIAGNOSTIC: what = "SEND_DIAGNOSTIC"; break;
254 case ALLOW_MEDIUM_REMOVAL: what = "ALLOW_MEDIUM_REMOVAL"; break;
255 case SET_WINDOW: what = "SET_WINDOW"; break;
256 case READ_CAPACITY: what = "READ_CAPACITY"; break;
257 case READ_10: what = "READ_10"; break;
258 case WRITE_10: what = "WRITE_10"; break;
259 case SEEK_10: what = "SEEK_10"; break;
260 case WRITE_VERIFY: what = "WRITE_VERIFY"; break;
261 case VERIFY: what = "VERIFY"; break;
262 case SEARCH_HIGH: what = "SEARCH_HIGH"; break;
263 case SEARCH_EQUAL: what = "SEARCH_EQUAL"; break;
264 case SEARCH_LOW: what = "SEARCH_LOW"; break;
265 case SET_LIMITS: what = "SET_LIMITS"; break;
266 case READ_POSITION: what = "READ_POSITION"; break;
267 case SYNCHRONIZE_CACHE: what = "SYNCHRONIZE_CACHE"; break;
268 case LOCK_UNLOCK_CACHE: what = "LOCK_UNLOCK_CACHE"; break;
269 case READ_DEFECT_DATA: what = "READ_DEFECT_DATA"; break;
270 case MEDIUM_SCAN: what = "MEDIUM_SCAN"; break;
271 case COMPARE: what = "COMPARE"; break;
272 case COPY_VERIFY: what = "COPY_VERIFY"; break;
273 case WRITE_BUFFER: what = "WRITE_BUFFER"; break;
274 case READ_BUFFER: what = "READ_BUFFER"; break;
275 case UPDATE_BLOCK: what = "UPDATE_BLOCK"; break;
276 case READ_LONG: what = "READ_LONG"; break;
277 case WRITE_LONG: what = "WRITE_LONG"; break;
278 case CHANGE_DEFINITION: what = "CHANGE_DEFINITION"; break;
279 case WRITE_SAME: what = "WRITE_SAME"; break;
280 case READ_TOC: what = "READ_TOC"; break;
281 case LOG_SELECT: what = "LOG_SELECT"; break;
282 case LOG_SENSE: what = "LOG_SENSE"; break;
283 case MODE_SELECT_10: what = "MODE_SELECT_10"; break;
284 case MODE_SENSE_10: what = "MODE_SENSE_10"; break;
285 case MOVE_MEDIUM: what = "MOVE_MEDIUM"; break;
286 case READ_12: what = "READ_12"; break;
287 case WRITE_12: what = "WRITE_12"; break;
288 case WRITE_VERIFY_12: what = "WRITE_VERIFY_12"; break;
289 case SEARCH_HIGH_12: what = "SEARCH_HIGH_12"; break;
290 case SEARCH_EQUAL_12: what = "SEARCH_EQUAL_12"; break;
291 case SEARCH_LOW_12: what = "SEARCH_LOW_12"; break;
292 case READ_ELEMENT_STATUS: what = "READ_ELEMENT_STATUS"; break;
293 case SEND_VOLUME_TAG: what = "SEND_VOLUME_TAG"; break;
294 case WRITE_LONG_2: what = "WRITE_LONG_2"; break;
296 MTS_DEBUG("can't decode command\n");
300 MTS_DEBUG( "Command %s (%d bytes)\n", what, srb->cmd_len);
303 MTS_DEBUG( " %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
304 srb->cmnd[0], srb->cmnd[1], srb->cmnd[2], srb->cmnd[3], srb->cmnd[4], srb->cmnd[5],
305 srb->cmnd[6], srb->cmnd[7], srb->cmnd[8], srb->cmnd[9]);
310 static inline void mts_show_command(struct scsi_cmnd * dummy)
314 static inline void mts_debug_dump(struct mts_desc* dummy)
320 static inline void mts_urb_abort(struct mts_desc* desc) {
321 MTS_DEBUG_GOT_HERE();
322 mts_debug_dump(desc);
324 usb_kill_urb( desc->urb );
327 static int mts_slave_alloc (struct scsi_device *s)
329 s->inquiry_len = 0x24;
333 static int mts_slave_configure (struct scsi_device *s)
335 blk_queue_dma_alignment(s->request_queue, (512 - 1));
339 static int mts_scsi_abort(struct scsi_cmnd *srb)
341 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
343 MTS_DEBUG_GOT_HERE();
350 static int mts_scsi_host_reset(struct scsi_cmnd *srb)
352 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
355 MTS_DEBUG_GOT_HERE();
356 mts_debug_dump(desc);
358 rc = usb_lock_device_for_reset(desc->usb_dev, desc->usb_intf);
361 result = usb_reset_device(desc->usb_dev);
363 usb_unlock_device(desc->usb_dev);
364 return result ? FAILED : SUCCESS;
368 mts_scsi_queuecommand(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback);
370 static void mts_transfer_cleanup( struct urb *transfer );
371 static void mts_do_sg(struct urb * transfer);
374 void mts_int_submit_urb (struct urb* transfer,
378 usb_complete_t callback )
379 /* Interrupt context! */
381 /* Holding transfer->context->lock! */
387 usb_fill_bulk_urb(transfer,
388 context->instance->usb_dev,
396 res = usb_submit_urb( transfer, GFP_ATOMIC );
397 if ( unlikely(res) ) {
398 MTS_INT_ERROR( "could not submit URB! Error was %d\n",(int)res );
399 context->srb->result = DID_ERROR << 16;
400 mts_transfer_cleanup(transfer);
406 static void mts_transfer_cleanup( struct urb *transfer )
407 /* Interrupt context! */
411 if ( likely(context->final_callback != NULL) )
412 context->final_callback(context->srb);
416 static void mts_transfer_done( struct urb *transfer )
420 context->srb->result &= MTS_SCSI_ERR_MASK;
421 context->srb->result |= (unsigned)(*context->scsi_status)<<1;
423 mts_transfer_cleanup(transfer);
429 static void mts_get_status( struct urb *transfer )
430 /* Interrupt context! */
434 mts_int_submit_urb(transfer,
435 usb_rcvbulkpipe(context->instance->usb_dev,
436 context->instance->ep_response),
437 context->scsi_status,
442 static void mts_data_done( struct urb* transfer )
443 /* Interrupt context! */
445 int status = transfer->status;
448 if ( context->data_length != transfer->actual_length ) {
449 scsi_set_resid(context->srb, context->data_length -
450 transfer->actual_length);
451 } else if ( unlikely(status) ) {
452 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
455 mts_get_status(transfer);
461 static void mts_command_done( struct urb *transfer )
462 /* Interrupt context! */
464 int status = transfer->status;
467 if ( unlikely(status) ) {
468 if (status == -ENOENT) {
469 /* We are being killed */
470 MTS_DEBUG_GOT_HERE();
471 context->srb->result = DID_ABORT<<16;
473 /* A genuine error has occurred */
474 MTS_DEBUG_GOT_HERE();
476 context->srb->result = DID_ERROR<<16;
478 mts_transfer_cleanup(transfer);
483 if (context->srb->cmnd[0] == REQUEST_SENSE) {
484 mts_int_submit_urb(transfer,
486 context->srb->sense_buffer,
487 context->data_length,
489 } else { if ( context->data ) {
490 mts_int_submit_urb(transfer,
493 context->data_length,
494 scsi_sg_count(context->srb) > 1 ?
495 mts_do_sg : mts_data_done);
497 mts_get_status(transfer);
504 static void mts_do_sg (struct urb* transfer)
506 struct scatterlist * sg;
507 int status = transfer->status;
510 MTS_DEBUG("Processing fragment %d of %d\n", context->fragment,
511 scsi_sg_count(context->srb));
513 if (unlikely(status)) {
514 context->srb->result = (status == -ENOENT ? DID_ABORT : DID_ERROR)<<16;
515 mts_transfer_cleanup(transfer);
518 sg = scsi_sglist(context->srb);
520 mts_int_submit_urb(transfer,
522 sg_virt(&sg[context->fragment]),
523 sg[context->fragment].length,
524 context->fragment + 1 == scsi_sg_count(context->srb) ?
525 mts_data_done : mts_do_sg);
529 static const u8 mts_read_image_sig[] = { 0x28, 00, 00, 00 };
530 static const u8 mts_read_image_sig_len = 4;
531 static const unsigned char mts_direction[256/8] = {
532 0x28, 0x81, 0x14, 0x14, 0x20, 0x01, 0x90, 0x77,
533 0x0C, 0x20, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00,
534 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01,
535 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
539 #define MTS_DIRECTION_IS_IN(x) ((mts_direction[x>>3] >> (x & 7)) & 1)
542 mts_build_transfer_context(struct scsi_cmnd *srb, struct mts_desc* desc)
545 struct scatterlist * sg;
547 MTS_DEBUG_GOT_HERE();
549 desc->context.instance = desc;
550 desc->context.srb = srb;
551 desc->context.fragment = 0;
553 if (!scsi_bufflen(srb)) {
554 desc->context.data = NULL;
555 desc->context.data_length = 0;
558 sg = scsi_sglist(srb);
559 desc->context.data = sg_virt(&sg[0]);
560 desc->context.data_length = sg[0].length;
564 /* can't rely on srb->sc_data_direction */
566 /* Brutally ripped from usb-storage */
568 if ( !memcmp( srb->cmnd, mts_read_image_sig, mts_read_image_sig_len )
569 ) { pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_image);
570 MTS_DEBUG( "transfering from desc->ep_image == %d\n",
571 (int)desc->ep_image );
572 } else if ( MTS_DIRECTION_IS_IN(srb->cmnd[0]) ) {
573 pipe = usb_rcvbulkpipe(desc->usb_dev,desc->ep_response);
574 MTS_DEBUG( "transfering from desc->ep_response == %d\n",
575 (int)desc->ep_response);
577 MTS_DEBUG("transfering to desc->ep_out == %d\n",
579 pipe = usb_sndbulkpipe(desc->usb_dev,desc->ep_out);
581 desc->context.data_pipe = pipe;
586 mts_scsi_queuecommand(struct scsi_cmnd *srb, mts_scsi_cmnd_callback callback)
588 struct mts_desc* desc = (struct mts_desc*)(srb->device->host->hostdata[0]);
592 MTS_DEBUG_GOT_HERE();
593 mts_show_command(srb);
594 mts_debug_dump(desc);
596 if ( srb->device->lun || srb->device->id || srb->device->channel ) {
598 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 );
600 MTS_DEBUG("this device doesn't exist\n");
602 srb->result = DID_BAD_TARGET << 16;
604 if(likely(callback != NULL))
611 usb_fill_bulk_urb(desc->urb,
613 usb_sndbulkpipe(desc->usb_dev,desc->ep_out),
621 mts_build_transfer_context( srb, desc );
622 desc->context.final_callback = callback;
624 /* here we need ATOMIC as we are called with the iolock */
625 res=usb_submit_urb(desc->urb, GFP_ATOMIC);
628 MTS_ERROR("error %d submitting URB\n",(int)res);
629 srb->result = DID_ERROR << 16;
631 if(likely(callback != NULL))
639 static struct scsi_host_template mts_scsi_host_template = {
640 .module = THIS_MODULE,
641 .name = "microtekX6",
642 .proc_name = "microtekX6",
643 .queuecommand = mts_scsi_queuecommand,
644 .eh_abort_handler = mts_scsi_abort,
645 .eh_host_reset_handler = mts_scsi_host_reset,
646 .sg_tablesize = SG_ALL,
652 .slave_alloc = mts_slave_alloc,
653 .slave_configure = mts_slave_configure,
654 .max_sectors= 256, /* 128 K */
657 struct vendor_product
670 /* These are taken from the msmUSB.inf file on the Windows driver CD */
671 static const struct vendor_product mts_supported_products[] =
673 { "Phantom 336CX", mts_sup_unknown},
674 { "Phantom 336CX", mts_sup_unknown},
675 { "Scanmaker X6", mts_sup_alpha},
676 { "Phantom C6", mts_sup_unknown},
677 { "Phantom 336CX", mts_sup_unknown},
678 { "ScanMaker V6USL", mts_sup_unknown},
679 { "ScanMaker V6USL", mts_sup_unknown},
680 { "Scanmaker V6UL", mts_sup_unknown},
681 { "Scanmaker V6UPL", mts_sup_alpha},
684 /* The entries of microtek_table must correspond, line-by-line to
685 the entries of mts_supported_products[]. */
687 static struct usb_device_id mts_usb_ids [] =
689 { USB_DEVICE(0x4ce, 0x0300) },
690 { USB_DEVICE(0x5da, 0x0094) },
691 { USB_DEVICE(0x5da, 0x0099) },
692 { USB_DEVICE(0x5da, 0x009a) },
693 { USB_DEVICE(0x5da, 0x00a0) },
694 { USB_DEVICE(0x5da, 0x00a3) },
695 { USB_DEVICE(0x5da, 0x80a3) },
696 { USB_DEVICE(0x5da, 0x80ac) },
697 { USB_DEVICE(0x5da, 0x00b6) },
698 { } /* Terminating entry */
701 MODULE_DEVICE_TABLE (usb, mts_usb_ids);
704 static int mts_usb_probe(struct usb_interface *intf,
705 const struct usb_device_id *id)
709 int ep_in_set[3]; /* this will break if we have more than three endpoints
710 which is why we check */
711 int *ep_in_current = ep_in_set;
712 int err_retval = -ENOMEM;
714 struct mts_desc * new_desc;
715 struct vendor_product const* p;
716 struct usb_device *dev = interface_to_usbdev (intf);
718 /* the current altsetting on the interface we're probing */
719 struct usb_host_interface *altsetting;
721 MTS_DEBUG_GOT_HERE();
722 MTS_DEBUG( "usb-device descriptor at %x\n", (int)dev );
724 MTS_DEBUG( "product id = 0x%x, vendor id = 0x%x\n",
725 le16_to_cpu(dev->descriptor.idProduct),
726 le16_to_cpu(dev->descriptor.idVendor) );
728 MTS_DEBUG_GOT_HERE();
730 p = &mts_supported_products[id - mts_usb_ids];
732 MTS_DEBUG_GOT_HERE();
734 MTS_DEBUG( "found model %s\n", p->name );
735 if ( p->support_status != mts_sup_full )
736 MTS_MESSAGE( "model %s is not known to be fully supported, reports welcome!\n",
739 /* the current altsetting on the interface we're probing */
740 altsetting = intf->cur_altsetting;
743 /* Check if the config is sane */
745 if ( altsetting->desc.bNumEndpoints != MTS_EP_TOTAL ) {
746 MTS_WARNING( "expecting %d got %d endpoints! Bailing out.\n",
747 (int)MTS_EP_TOTAL, (int)altsetting->desc.bNumEndpoints );
751 for( i = 0; i < altsetting->desc.bNumEndpoints; i++ ) {
752 if ((altsetting->endpoint[i].desc.bmAttributes &
753 USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK) {
755 MTS_WARNING( "can only deal with bulk endpoints; endpoint %d is not bulk.\n",
756 (int)altsetting->endpoint[i].desc.bEndpointAddress );
758 if (altsetting->endpoint[i].desc.bEndpointAddress &
761 = altsetting->endpoint[i].desc.bEndpointAddress &
762 USB_ENDPOINT_NUMBER_MASK;
764 if ( ep_out != -1 ) {
765 MTS_WARNING( "can only deal with one output endpoints. Bailing out." );
769 ep_out = altsetting->endpoint[i].desc.bEndpointAddress &
770 USB_ENDPOINT_NUMBER_MASK;
777 if ( ep_out == -1 ) {
778 MTS_WARNING( "couldn't find an output bulk endpoint. Bailing out.\n" );
783 new_desc = kzalloc(sizeof(struct mts_desc), GFP_KERNEL);
787 new_desc->urb = usb_alloc_urb(0, GFP_KERNEL);
791 new_desc->context.scsi_status = kmalloc(1, GFP_KERNEL);
792 if (!new_desc->context.scsi_status)
795 new_desc->usb_dev = dev;
796 new_desc->usb_intf = intf;
797 init_MUTEX(&new_desc->lock);
800 new_desc->ep_out = ep_out;
801 new_desc->ep_response = ep_in_set[0];
802 new_desc->ep_image = ep_in_set[1];
804 if ( new_desc->ep_out != MTS_EP_OUT )
805 MTS_WARNING( "will this work? Command EP is not usually %d\n",
806 (int)new_desc->ep_out );
808 if ( new_desc->ep_response != MTS_EP_RESPONSE )
809 MTS_WARNING( "will this work? Response EP is not usually %d\n",
810 (int)new_desc->ep_response );
812 if ( new_desc->ep_image != MTS_EP_IMAGE )
813 MTS_WARNING( "will this work? Image data EP is not usually %d\n",
814 (int)new_desc->ep_image );
816 new_desc->host = scsi_host_alloc(&mts_scsi_host_template,
821 new_desc->host->hostdata[0] = (unsigned long)new_desc;
822 if (scsi_add_host(new_desc->host, &dev->dev)) {
826 scsi_scan_host(new_desc->host);
828 usb_set_intfdata(intf, new_desc);
832 scsi_host_put(new_desc->host);
834 kfree(new_desc->context.scsi_status);
836 usb_free_urb(new_desc->urb);
843 static void mts_usb_disconnect (struct usb_interface *intf)
845 struct mts_desc *desc = usb_get_intfdata(intf);
847 usb_set_intfdata(intf, NULL);
849 usb_kill_urb(desc->urb);
850 scsi_remove_host(desc->host);
852 scsi_host_put(desc->host);
853 usb_free_urb(desc->urb);
854 kfree(desc->context.scsi_status);
859 static int __init microtek_drv_init(void)
861 return usb_register(&mts_usb_driver);
864 static void __exit microtek_drv_exit(void)
866 usb_deregister(&mts_usb_driver);
869 module_init(microtek_drv_init);
870 module_exit(microtek_drv_exit);
872 MODULE_AUTHOR( DRIVER_AUTHOR );
873 MODULE_DESCRIPTION( DRIVER_DESC );
874 MODULE_LICENSE("GPL");