Commit | Line | Data |
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126bb03b AC |
1 | #include <linux/sched.h> |
2 | #include <linux/errno.h> | |
3 | #include <linux/freezer.h> | |
4 | #include <linux/module.h> | |
5 | #include <linux/init.h> | |
6 | #include <linux/slab.h> | |
7 | #include <linux/kthread.h> | |
8 | #include <linux/mutex.h> | |
9 | #include <linux/utsname.h> | |
10 | ||
11 | #include <scsi/scsi.h> | |
12 | #include <scsi/scsi_cmnd.h> | |
13 | #include <scsi/scsi_device.h> | |
14 | ||
15 | #include "usb.h" | |
16 | #include "scsiglue.h" | |
17 | #include "transport.h" | |
18 | ||
19 | /* Some informational data */ | |
20 | MODULE_AUTHOR("Domao"); | |
21 | MODULE_DESCRIPTION("ENE USB Mass Storage driver for Linux"); | |
22 | MODULE_LICENSE("GPL"); | |
23 | ||
a8718692 AC |
24 | static unsigned int delay_use = 1; |
25 | ||
126bb03b AC |
26 | static struct usb_device_id eucr_usb_ids [] = { |
27 | { USB_DEVICE(0x058f, 0x6366) }, | |
28 | { USB_DEVICE(0x0cf2, 0x6230) }, | |
29 | { USB_DEVICE(0x0cf2, 0x6250) }, | |
30 | { } /* Terminating entry */ | |
31 | }; | |
32 | MODULE_DEVICE_TABLE (usb, eucr_usb_ids); | |
33 | ||
34 | ||
e23f773e | 35 | #ifdef CONFIG_PM |
126bb03b AC |
36 | |
37 | int eucr_suspend(struct usb_interface *iface, pm_message_t message) | |
38 | { | |
39 | struct us_data *us = usb_get_intfdata(iface); | |
40 | printk("--- eucr_suspend ---\n"); | |
41 | /* Wait until no command is running */ | |
42 | mutex_lock(&us->dev_mutex); | |
43 | ||
44 | //US_DEBUGP("%s\n", __func__); | |
45 | if (us->suspend_resume_hook) | |
46 | (us->suspend_resume_hook)(us, US_SUSPEND); | |
47 | ||
48 | /* When runtime PM is working, we'll set a flag to indicate | |
49 | * whether we should autoresume when a SCSI request arrives. */ | |
50 | // us->Power_IsResum = true; | |
51 | //us->SD_Status.Ready = 0; | |
52 | ||
53 | mutex_unlock(&us->dev_mutex); | |
54 | return 0; | |
55 | } | |
56 | //EXPORT_SYMBOL_GPL(eucr_suspend); | |
57 | ||
58 | int eucr_resume(struct usb_interface *iface) | |
59 | { | |
60 | BYTE tmp = 0; | |
61 | ||
62 | struct us_data *us = usb_get_intfdata(iface); | |
63 | printk("--- eucr_resume---\n"); | |
64 | mutex_lock(&us->dev_mutex); | |
65 | ||
66 | //US_DEBUGP("%s\n", __func__); | |
67 | if (us->suspend_resume_hook) | |
68 | (us->suspend_resume_hook)(us, US_RESUME); | |
69 | ||
70 | ||
71 | mutex_unlock(&us->dev_mutex); | |
72 | ||
73 | ||
74 | us->Power_IsResum = true; | |
75 | // | |
76 | //us->SD_Status.Ready = 0; //?? | |
77 | us->SD_Status = *(PSD_STATUS)&tmp; | |
78 | us->MS_Status = *(PMS_STATUS)&tmp; | |
79 | us->SM_Status = *(PSM_STATUS)&tmp; | |
80 | ||
81 | return 0; | |
82 | } | |
83 | //EXPORT_SYMBOL_GPL(eucr_resume); | |
84 | int eucr_reset_resume(struct usb_interface *iface) | |
85 | { | |
86 | BYTE tmp = 0; | |
87 | struct us_data *us = usb_get_intfdata(iface); | |
88 | ||
89 | printk("--- eucr_reset_resume---\n"); | |
90 | //US_DEBUGP("%s\n", __func__); | |
91 | ||
92 | /* Report the reset to the SCSI core */ | |
93 | usb_stor_report_bus_reset(us); | |
94 | ||
95 | /* FIXME: Notify the subdrivers that they need to reinitialize | |
96 | * the device */ | |
97 | //ENE_InitMedia(us); | |
98 | us->Power_IsResum = true; | |
99 | // | |
100 | //us->SD_Status.Ready = 0; //?? | |
101 | us->SD_Status = *(PSD_STATUS)&tmp; | |
102 | us->MS_Status = *(PMS_STATUS)&tmp; | |
103 | us->SM_Status = *(PSM_STATUS)&tmp; | |
104 | return 0; | |
105 | } | |
106 | //EXPORT_SYMBOL_GPL(usb_stor_reset_resume); | |
107 | ||
e23f773e RD |
108 | #else |
109 | ||
110 | #define eucr_suspend NULL | |
111 | #define eucr_resume NULL | |
112 | #define eucr_reset_resume NULL | |
113 | ||
114 | #endif | |
115 | ||
126bb03b AC |
116 | //----- eucr_pre_reset() --------------------- |
117 | static int eucr_pre_reset(struct usb_interface *iface) | |
118 | { | |
119 | struct us_data *us = usb_get_intfdata(iface); | |
120 | ||
121 | printk("usb --- eucr_pre_reset\n"); | |
122 | ||
123 | /* Make sure no command runs during the reset */ | |
124 | mutex_lock(&us->dev_mutex); | |
125 | return 0; | |
126 | } | |
127 | ||
128 | //----- eucr_post_reset() --------------------- | |
129 | static int eucr_post_reset(struct usb_interface *iface) | |
130 | { | |
131 | struct us_data *us = usb_get_intfdata(iface); | |
132 | ||
133 | printk("usb --- eucr_post_reset\n"); | |
134 | ||
135 | /* Report the reset to the SCSI core */ | |
136 | usb_stor_report_bus_reset(us); | |
137 | ||
138 | mutex_unlock(&us->dev_mutex); | |
139 | return 0; | |
140 | } | |
141 | ||
142 | //----- fill_inquiry_response() --------------------- | |
143 | void fill_inquiry_response(struct us_data *us, unsigned char *data, unsigned int data_len) | |
144 | { | |
145 | printk("usb --- fill_inquiry_response\n"); | |
146 | if (data_len<36) // You lose. | |
147 | return; | |
148 | ||
149 | if (data[0]&0x20) | |
150 | { | |
151 | memset(data+8,0,28); | |
152 | } | |
153 | else | |
154 | { | |
155 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); | |
156 | memcpy(data+8, us->unusual_dev->vendorName, | |
157 | strlen(us->unusual_dev->vendorName) > 8 ? 8 : | |
158 | strlen(us->unusual_dev->vendorName)); | |
159 | memcpy(data+16, us->unusual_dev->productName, | |
160 | strlen(us->unusual_dev->productName) > 16 ? 16 : | |
161 | strlen(us->unusual_dev->productName)); | |
162 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); | |
163 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); | |
164 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); | |
165 | data[35] = 0x30 + ((bcdDevice) & 0x0F); | |
166 | } | |
167 | usb_stor_set_xfer_buf(us, data, data_len, us->srb, TO_XFER_BUF); | |
168 | } | |
169 | ||
170 | //----- usb_stor_control_thread() --------------------- | |
171 | static int usb_stor_control_thread(void * __us) | |
172 | { | |
173 | struct us_data *us = (struct us_data *)__us; | |
174 | struct Scsi_Host *host = us_to_host(us); | |
175 | ||
176 | printk("usb --- usb_stor_control_thread\n"); | |
177 | for(;;) | |
178 | { | |
179 | if (wait_for_completion_interruptible(&us->cmnd_ready)) | |
180 | break; | |
181 | ||
182 | /* lock the device pointers */ | |
183 | mutex_lock(&(us->dev_mutex)); | |
184 | ||
185 | /* if the device has disconnected, we are free to exit */ | |
a8718692 | 186 | if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { |
126bb03b AC |
187 | mutex_unlock(&us->dev_mutex); |
188 | break; | |
a8718692 | 189 | } |
126bb03b AC |
190 | |
191 | /* lock access to the state */ | |
192 | scsi_lock(host); | |
193 | ||
194 | /* When we are called with no command pending, we're done */ | |
195 | if (us->srb == NULL) | |
196 | { | |
197 | scsi_unlock(host); | |
198 | mutex_unlock(&us->dev_mutex); | |
199 | //US_DEBUGP("-- exiting\n"); | |
200 | break; | |
201 | } | |
202 | ||
203 | /* has the command timed out *already* ? */ | |
204 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) | |
205 | { | |
206 | us->srb->result = DID_ABORT << 16; | |
207 | goto SkipForAbort; | |
208 | } | |
209 | ||
210 | scsi_unlock(host); | |
211 | ||
212 | if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) | |
213 | { | |
214 | us->srb->result = DID_ERROR << 16; | |
215 | } | |
216 | else if (us->srb->device->id && !(us->fflags & US_FL_SCM_MULT_TARG)) | |
217 | { | |
218 | us->srb->result = DID_BAD_TARGET << 16; | |
219 | } | |
220 | else if (us->srb->device->lun > us->max_lun) | |
221 | { | |
222 | us->srb->result = DID_BAD_TARGET << 16; | |
223 | } | |
224 | else if ((us->srb->cmnd[0] == INQUIRY) && (us->fflags & US_FL_FIX_INQUIRY)) | |
225 | { | |
226 | unsigned char data_ptr[36] = {0x00, 0x80, 0x02, 0x02, 0x1F, 0x00, 0x00, 0x00}; | |
227 | ||
228 | fill_inquiry_response(us, data_ptr, 36); | |
229 | us->srb->result = SAM_STAT_GOOD; | |
230 | } | |
231 | else | |
232 | { | |
233 | us->proto_handler(us->srb, us); | |
234 | } | |
235 | ||
236 | /* lock access to the state */ | |
237 | scsi_lock(host); | |
238 | ||
239 | /* indicate that the command is done */ | |
240 | if (us->srb->result != DID_ABORT << 16) | |
241 | { | |
242 | us->srb->scsi_done(us->srb); | |
243 | } | |
244 | else | |
245 | { | |
246 | SkipForAbort: | |
247 | printk("scsi command aborted\n"); | |
248 | } | |
249 | ||
250 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) | |
251 | { | |
252 | complete(&(us->notify)); | |
253 | ||
254 | /* Allow USB transfers to resume */ | |
255 | clear_bit(US_FLIDX_ABORTING, &us->dflags); | |
256 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); | |
257 | } | |
258 | ||
259 | /* finished working on this command */ | |
260 | us->srb = NULL; | |
261 | scsi_unlock(host); | |
262 | ||
263 | /* unlock the device pointers */ | |
264 | mutex_unlock(&us->dev_mutex); | |
265 | } /* for (;;) */ | |
266 | ||
267 | /* Wait until we are told to stop */ | |
268 | for (;;) | |
269 | { | |
270 | set_current_state(TASK_INTERRUPTIBLE); | |
271 | if (kthread_should_stop()) | |
272 | break; | |
273 | schedule(); | |
274 | } | |
275 | __set_current_state(TASK_RUNNING); | |
276 | return 0; | |
277 | } | |
278 | ||
279 | //----- associate_dev() --------------------- | |
280 | static int associate_dev(struct us_data *us, struct usb_interface *intf) | |
281 | { | |
282 | printk("usb --- associate_dev\n"); | |
283 | ||
284 | /* Fill in the device-related fields */ | |
285 | us->pusb_dev = interface_to_usbdev(intf); | |
286 | us->pusb_intf = intf; | |
287 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
288 | ||
289 | /* Store our private data in the interface */ | |
290 | usb_set_intfdata(intf, us); | |
291 | ||
292 | /* Allocate the device-related DMA-mapped buffers */ | |
293 | us->cr = usb_alloc_coherent(us->pusb_dev, sizeof(*us->cr), GFP_KERNEL, &us->cr_dma); | |
294 | if (!us->cr) | |
295 | { | |
296 | printk("usb_ctrlrequest allocation failed\n"); | |
297 | return -ENOMEM; | |
298 | } | |
299 | ||
300 | us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, GFP_KERNEL, &us->iobuf_dma); | |
301 | if (!us->iobuf) | |
302 | { | |
303 | printk("I/O buffer allocation failed\n"); | |
304 | return -ENOMEM; | |
305 | } | |
306 | ||
307 | us->sensebuf = kmalloc(US_SENSE_SIZE, GFP_KERNEL); | |
308 | if (!us->sensebuf) | |
309 | { | |
310 | printk("Sense buffer allocation failed\n"); | |
311 | return -ENOMEM; | |
312 | } | |
313 | return 0; | |
314 | } | |
315 | ||
316 | //----- get_device_info() --------------------- | |
317 | static int get_device_info(struct us_data *us, const struct usb_device_id *id) | |
318 | { | |
319 | struct usb_device *dev = us->pusb_dev; | |
320 | struct usb_interface_descriptor *idesc = &us->pusb_intf->cur_altsetting->desc; | |
321 | ||
322 | printk("usb --- get_device_info\n"); | |
323 | ||
324 | us->subclass = idesc->bInterfaceSubClass; | |
325 | us->protocol = idesc->bInterfaceProtocol; | |
326 | us->fflags = USB_US_ORIG_FLAGS(id->driver_info); | |
327 | us->Power_IsResum = false; | |
328 | ||
329 | if (us->fflags & US_FL_IGNORE_DEVICE) | |
330 | { | |
331 | printk("device ignored\n"); | |
332 | return -ENODEV; | |
333 | } | |
334 | ||
335 | if (dev->speed != USB_SPEED_HIGH) | |
336 | us->fflags &= ~US_FL_GO_SLOW; | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
341 | //----- get_transport() --------------------- | |
342 | static int get_transport(struct us_data *us) | |
343 | { | |
344 | printk("usb --- get_transport\n"); | |
345 | switch (us->protocol) { | |
346 | case US_PR_BULK: | |
347 | us->transport_name = "Bulk"; | |
348 | us->transport = usb_stor_Bulk_transport; | |
349 | us->transport_reset = usb_stor_Bulk_reset; | |
350 | break; | |
351 | ||
352 | default: | |
353 | return -EIO; | |
354 | } | |
355 | //printk("Transport: %s\n", us->transport_name); | |
356 | ||
357 | /* fix for single-lun devices */ | |
358 | if (us->fflags & US_FL_SINGLE_LUN) | |
359 | us->max_lun = 0; | |
360 | return 0; | |
361 | } | |
362 | ||
363 | //----- get_protocol() --------------------- | |
364 | static int get_protocol(struct us_data *us) | |
365 | { | |
366 | printk("usb --- get_protocol\n"); | |
367 | printk("us->pusb_dev->descriptor.idVendor = %x\n", us->pusb_dev->descriptor.idVendor); | |
368 | printk("us->pusb_dev->descriptor.idProduct = %x\n", us->pusb_dev->descriptor.idProduct); | |
369 | switch (us->subclass) { | |
370 | case US_SC_SCSI: | |
371 | us->protocol_name = "Transparent SCSI"; | |
372 | if( (us->pusb_dev->descriptor.idVendor == 0x0CF2) && (us->pusb_dev->descriptor.idProduct == 0x6250) ) | |
373 | us->proto_handler = ENE_stor_invoke_transport; | |
374 | else | |
375 | us->proto_handler = usb_stor_invoke_transport; | |
376 | break; | |
377 | ||
378 | default: | |
379 | return -EIO; | |
380 | } | |
381 | //printk("Protocol: %s\n", us->protocol_name); | |
382 | return 0; | |
383 | } | |
384 | ||
385 | //----- get_pipes() --------------------- | |
386 | static int get_pipes(struct us_data *us) | |
387 | { | |
388 | struct usb_host_interface *altsetting = us->pusb_intf->cur_altsetting; | |
389 | int i; | |
390 | struct usb_endpoint_descriptor *ep; | |
391 | struct usb_endpoint_descriptor *ep_in = NULL; | |
392 | struct usb_endpoint_descriptor *ep_out = NULL; | |
393 | struct usb_endpoint_descriptor *ep_int = NULL; | |
394 | ||
395 | printk("usb --- get_pipes\n"); | |
396 | ||
397 | for (i = 0; i < altsetting->desc.bNumEndpoints; i++) | |
398 | { | |
399 | ep = &altsetting->endpoint[i].desc; | |
400 | ||
401 | if (usb_endpoint_xfer_bulk(ep)) | |
402 | { | |
403 | if (usb_endpoint_dir_in(ep)) | |
404 | { | |
405 | if (!ep_in) | |
406 | ep_in = ep; | |
407 | } | |
408 | else | |
409 | { | |
410 | if (!ep_out) | |
411 | ep_out = ep; | |
412 | } | |
413 | } | |
414 | else if (usb_endpoint_is_int_in(ep)) | |
415 | { | |
416 | if (!ep_int) | |
417 | ep_int = ep; | |
418 | } | |
419 | } | |
420 | ||
421 | if (!ep_in || !ep_out || (us->protocol == US_PR_CBI && !ep_int)) | |
422 | { | |
423 | printk("Endpoint sanity check failed! Rejecting dev.\n"); | |
424 | return -EIO; | |
425 | } | |
426 | ||
427 | /* Calculate and store the pipe values */ | |
428 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); | |
429 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); | |
430 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
431 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
432 | if (ep_int) | |
433 | { | |
434 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, ep_int->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
435 | us->ep_bInterval = ep_int->bInterval; | |
436 | } | |
437 | return 0; | |
438 | } | |
439 | ||
440 | //----- usb_stor_acquire_resources() --------------------- | |
441 | static int usb_stor_acquire_resources(struct us_data *us) | |
442 | { | |
443 | struct task_struct *th; | |
444 | ||
445 | printk("usb --- usb_stor_acquire_resources\n"); | |
446 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); | |
447 | if (!us->current_urb) | |
448 | { | |
449 | printk("URB allocation failed\n"); | |
450 | return -ENOMEM; | |
451 | } | |
452 | ||
453 | /* Start up our control thread */ | |
454 | th = kthread_run(usb_stor_control_thread, us, "eucr-storage"); | |
455 | if (IS_ERR(th)) | |
456 | { | |
457 | printk("Unable to start control thread\n"); | |
458 | return PTR_ERR(th); | |
459 | } | |
460 | us->ctl_thread = th; | |
461 | ||
462 | return 0; | |
463 | } | |
464 | ||
465 | //----- usb_stor_release_resources() --------------------- | |
466 | static void usb_stor_release_resources(struct us_data *us) | |
467 | { | |
468 | printk("usb --- usb_stor_release_resources\n"); | |
469 | ||
470 | SM_FreeMem(); | |
471 | ||
472 | complete(&us->cmnd_ready); | |
473 | if (us->ctl_thread) | |
474 | kthread_stop(us->ctl_thread); | |
475 | ||
476 | /* Call the destructor routine, if it exists */ | |
477 | if (us->extra_destructor) | |
478 | { | |
479 | printk("-- calling extra_destructor()\n"); | |
480 | us->extra_destructor(us->extra); | |
481 | } | |
482 | ||
483 | /* Free the extra data and the URB */ | |
484 | kfree(us->extra); | |
485 | usb_free_urb(us->current_urb); | |
486 | } | |
487 | ||
488 | //----- dissociate_dev() --------------------- | |
489 | static void dissociate_dev(struct us_data *us) | |
490 | { | |
491 | printk("usb --- dissociate_dev\n"); | |
492 | ||
493 | kfree(us->sensebuf); | |
494 | ||
495 | /* Free the device-related DMA-mapped buffers */ | |
496 | if (us->cr) | |
497 | usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr, us->cr_dma); | |
498 | if (us->iobuf) | |
499 | usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); | |
500 | ||
501 | /* Remove our private data from the interface */ | |
502 | usb_set_intfdata(us->pusb_intf, NULL); | |
503 | } | |
504 | ||
505 | //----- quiesce_and_remove_host() --------------------- | |
506 | static void quiesce_and_remove_host(struct us_data *us) | |
507 | { | |
508 | struct Scsi_Host *host = us_to_host(us); | |
509 | ||
510 | printk("usb --- quiesce_and_remove_host\n"); | |
511 | ||
512 | /* If the device is really gone, cut short reset delays */ | |
513 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) | |
514 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
515 | ||
516 | /* Prevent SCSI-scanning (if it hasn't started yet) | |
517 | * and wait for the SCSI-scanning thread to stop. | |
518 | */ | |
519 | set_bit(US_FLIDX_DONT_SCAN, &us->dflags); | |
520 | wake_up(&us->delay_wait); | |
521 | wait_for_completion(&us->scanning_done); | |
522 | ||
523 | /* Removing the host will perform an orderly shutdown: caches | |
524 | * synchronized, disks spun down, etc. | |
525 | */ | |
526 | scsi_remove_host(host); | |
527 | ||
528 | /* Prevent any new commands from being accepted and cut short | |
529 | * reset delays. | |
530 | */ | |
531 | scsi_lock(host); | |
532 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
533 | scsi_unlock(host); | |
534 | wake_up(&us->delay_wait); | |
535 | } | |
536 | ||
537 | //----- release_everything() --------------------- | |
538 | static void release_everything(struct us_data *us) | |
539 | { | |
540 | printk("usb --- release_everything\n"); | |
541 | ||
542 | usb_stor_release_resources(us); | |
543 | dissociate_dev(us); | |
544 | scsi_host_put(us_to_host(us)); | |
545 | } | |
546 | ||
547 | //----- usb_stor_scan_thread() --------------------- | |
548 | static int usb_stor_scan_thread(void * __us) | |
549 | { | |
550 | struct us_data *us = (struct us_data *)__us; | |
551 | ||
552 | printk("usb --- usb_stor_scan_thread\n"); | |
553 | printk("EUCR : device found at %d\n", us->pusb_dev->devnum); | |
554 | ||
a8718692 AC |
555 | set_freezable(); |
556 | /* Wait for the timeout to expire or for a disconnect */ | |
557 | if (delay_use > 0) { | |
558 | wait_event_freezable_timeout(us->delay_wait, | |
559 | test_bit(US_FLIDX_DONT_SCAN, &us->dflags), | |
560 | delay_use * HZ); | |
561 | } | |
126bb03b AC |
562 | |
563 | /* If the device is still connected, perform the scanning */ | |
564 | if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) | |
565 | { | |
566 | /* For bulk-only devices, determine the max LUN value */ | |
567 | if (us->protocol == US_PR_BULK && !(us->fflags & US_FL_SINGLE_LUN)) | |
568 | { | |
569 | mutex_lock(&us->dev_mutex); | |
570 | us->max_lun = usb_stor_Bulk_max_lun(us); | |
571 | mutex_unlock(&us->dev_mutex); | |
572 | } | |
573 | scsi_scan_host(us_to_host(us)); | |
574 | printk("EUCR : device scan complete\n"); | |
575 | } | |
576 | complete_and_exit(&us->scanning_done, 0); | |
577 | } | |
578 | ||
579 | //----- eucr_probe() --------------------- | |
580 | static int eucr_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
581 | { | |
582 | struct Scsi_Host *host; | |
583 | struct us_data *us; | |
584 | int result; | |
585 | struct task_struct *th; | |
586 | ||
587 | printk("usb --- eucr_probe\n"); | |
588 | ||
589 | host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us)); | |
590 | if (!host) | |
591 | { | |
592 | printk("Unable to allocate the scsi host\n"); | |
593 | return -ENOMEM; | |
594 | } | |
595 | ||
596 | /* Allow 16-byte CDBs and thus > 2TB */ | |
597 | host->max_cmd_len = 16; | |
598 | us = host_to_us(host); | |
599 | memset(us, 0, sizeof(struct us_data)); | |
600 | mutex_init(&(us->dev_mutex)); | |
601 | init_completion(&us->cmnd_ready); | |
602 | init_completion(&(us->notify)); | |
603 | init_waitqueue_head(&us->delay_wait); | |
604 | init_completion(&us->scanning_done); | |
605 | ||
606 | /* Associate the us_data structure with the USB device */ | |
607 | result = associate_dev(us, intf); | |
608 | if (result) | |
609 | goto BadDevice; | |
610 | ||
611 | /* Get Device info */ | |
612 | result = get_device_info(us, id); | |
613 | if (result) | |
614 | goto BadDevice; | |
615 | ||
616 | /* Get the transport, protocol, and pipe settings */ | |
617 | result = get_transport(us); | |
618 | if (result) | |
619 | goto BadDevice; | |
620 | result = get_protocol(us); | |
621 | if (result) | |
622 | goto BadDevice; | |
623 | result = get_pipes(us); | |
624 | if (result) | |
625 | goto BadDevice; | |
626 | ||
627 | /* Acquire all the other resources and add the host */ | |
628 | result = usb_stor_acquire_resources(us); | |
629 | if (result) | |
630 | goto BadDevice; | |
631 | ||
632 | result = scsi_add_host(host, &intf->dev); | |
633 | if (result) | |
634 | { | |
635 | printk("Unable to add the scsi host\n"); | |
636 | goto BadDevice; | |
637 | } | |
638 | ||
639 | /* Start up the thread for delayed SCSI-device scanning */ | |
640 | th = kthread_create(usb_stor_scan_thread, us, "eucr-stor-scan"); | |
641 | if (IS_ERR(th)) | |
642 | { | |
643 | printk("Unable to start the device-scanning thread\n"); | |
644 | complete(&us->scanning_done); | |
645 | quiesce_and_remove_host(us); | |
646 | result = PTR_ERR(th); | |
647 | goto BadDevice; | |
648 | } | |
649 | wake_up_process(th); | |
650 | return 0; | |
651 | ||
652 | /* We come here if there are any problems */ | |
653 | BadDevice: | |
654 | printk("usb --- eucr_probe failed\n"); | |
655 | release_everything(us); | |
656 | return result; | |
657 | } | |
658 | ||
659 | //----- eucr_disconnect() --------------------- | |
660 | static void eucr_disconnect(struct usb_interface *intf) | |
661 | { | |
662 | struct us_data *us = usb_get_intfdata(intf); | |
663 | ||
664 | printk("usb --- eucr_disconnect\n"); | |
665 | quiesce_and_remove_host(us); | |
666 | release_everything(us); | |
667 | } | |
668 | ||
669 | /*********************************************************************** | |
670 | * Initialization and registration | |
671 | ***********************************************************************/ | |
672 | ||
673 | //----- usb_storage_driver() --------------------- | |
674 | static struct usb_driver usb_storage_driver = { | |
675 | .name = "eucr", | |
676 | .probe = eucr_probe, | |
677 | .suspend = eucr_suspend, | |
678 | .resume = eucr_resume, | |
679 | .reset_resume = eucr_reset_resume, | |
680 | .disconnect = eucr_disconnect, | |
681 | .pre_reset = eucr_pre_reset, | |
682 | .post_reset = eucr_post_reset, | |
683 | .id_table = eucr_usb_ids, | |
684 | .soft_unbind = 1, | |
685 | }; | |
686 | ||
687 | //----- usb_stor_init() --------------------- | |
688 | static int __init usb_stor_init(void) | |
689 | { | |
690 | int retval; | |
691 | printk("usb --- usb_stor_init start\n"); | |
692 | ||
693 | retval = usb_register(&usb_storage_driver); | |
694 | if (retval == 0) | |
695 | printk("ENE USB Mass Storage support registered.\n"); | |
696 | ||
697 | return retval; | |
698 | } | |
699 | ||
700 | //----- usb_stor_exit() --------------------- | |
701 | static void __exit usb_stor_exit(void) | |
702 | { | |
703 | printk("usb --- usb_stor_exit\n"); | |
704 | ||
705 | usb_deregister(&usb_storage_driver) ; | |
706 | } | |
707 | ||
708 | module_init(usb_stor_init); | |
709 | module_exit(usb_stor_exit); |