Commit | Line | Data |
---|---|---|
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" | |
d8aba9d5 | 17 | #include "smil.h" |
126bb03b AC |
18 | #include "transport.h" |
19 | ||
20 | /* Some informational data */ | |
21 | MODULE_AUTHOR("Domao"); | |
22 | MODULE_DESCRIPTION("ENE USB Mass Storage driver for Linux"); | |
23 | MODULE_LICENSE("GPL"); | |
24 | ||
a8718692 AC |
25 | static unsigned int delay_use = 1; |
26 | ||
126bb03b AC |
27 | static struct usb_device_id eucr_usb_ids [] = { |
28 | { USB_DEVICE(0x058f, 0x6366) }, | |
29 | { USB_DEVICE(0x0cf2, 0x6230) }, | |
30 | { USB_DEVICE(0x0cf2, 0x6250) }, | |
31 | { } /* Terminating entry */ | |
32 | }; | |
33 | MODULE_DEVICE_TABLE (usb, eucr_usb_ids); | |
34 | ||
35 | ||
e23f773e | 36 | #ifdef CONFIG_PM |
126bb03b | 37 | |
d8aba9d5 | 38 | static int eucr_suspend(struct usb_interface *iface, pm_message_t message) |
126bb03b AC |
39 | { |
40 | struct us_data *us = usb_get_intfdata(iface); | |
871f8477 | 41 | pr_info("--- eucr_suspend ---\n"); |
126bb03b AC |
42 | /* Wait until no command is running */ |
43 | mutex_lock(&us->dev_mutex); | |
44 | ||
45 | //US_DEBUGP("%s\n", __func__); | |
46 | if (us->suspend_resume_hook) | |
47 | (us->suspend_resume_hook)(us, US_SUSPEND); | |
48 | ||
49 | /* When runtime PM is working, we'll set a flag to indicate | |
50 | * whether we should autoresume when a SCSI request arrives. */ | |
51 | // us->Power_IsResum = true; | |
52 | //us->SD_Status.Ready = 0; | |
53 | ||
54 | mutex_unlock(&us->dev_mutex); | |
55 | return 0; | |
56 | } | |
57 | //EXPORT_SYMBOL_GPL(eucr_suspend); | |
58 | ||
d8aba9d5 | 59 | static int eucr_resume(struct usb_interface *iface) |
126bb03b AC |
60 | { |
61 | BYTE tmp = 0; | |
62 | ||
63 | struct us_data *us = usb_get_intfdata(iface); | |
871f8477 | 64 | pr_info("--- eucr_resume---\n"); |
126bb03b AC |
65 | mutex_lock(&us->dev_mutex); |
66 | ||
67 | //US_DEBUGP("%s\n", __func__); | |
68 | if (us->suspend_resume_hook) | |
69 | (us->suspend_resume_hook)(us, US_RESUME); | |
70 | ||
71 | ||
72 | mutex_unlock(&us->dev_mutex); | |
73 | ||
74 | ||
75 | us->Power_IsResum = true; | |
76 | // | |
77 | //us->SD_Status.Ready = 0; //?? | |
126bb03b AC |
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); | |
d8aba9d5 | 84 | static int eucr_reset_resume(struct usb_interface *iface) |
126bb03b AC |
85 | { |
86 | BYTE tmp = 0; | |
87 | struct us_data *us = usb_get_intfdata(iface); | |
88 | ||
871f8477 | 89 | pr_info("--- eucr_reset_resume---\n"); |
126bb03b AC |
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; //?? | |
126bb03b AC |
101 | us->MS_Status = *(PMS_STATUS)&tmp; |
102 | us->SM_Status = *(PSM_STATUS)&tmp; | |
103 | return 0; | |
104 | } | |
105 | //EXPORT_SYMBOL_GPL(usb_stor_reset_resume); | |
106 | ||
e23f773e RD |
107 | #else |
108 | ||
109 | #define eucr_suspend NULL | |
110 | #define eucr_resume NULL | |
111 | #define eucr_reset_resume NULL | |
112 | ||
113 | #endif | |
114 | ||
126bb03b AC |
115 | //----- eucr_pre_reset() --------------------- |
116 | static int eucr_pre_reset(struct usb_interface *iface) | |
117 | { | |
118 | struct us_data *us = usb_get_intfdata(iface); | |
119 | ||
871f8477 | 120 | pr_info("usb --- eucr_pre_reset\n"); |
126bb03b AC |
121 | |
122 | /* Make sure no command runs during the reset */ | |
123 | mutex_lock(&us->dev_mutex); | |
124 | return 0; | |
125 | } | |
126 | ||
127 | //----- eucr_post_reset() --------------------- | |
128 | static int eucr_post_reset(struct usb_interface *iface) | |
129 | { | |
130 | struct us_data *us = usb_get_intfdata(iface); | |
131 | ||
871f8477 | 132 | pr_info("usb --- eucr_post_reset\n"); |
126bb03b AC |
133 | |
134 | /* Report the reset to the SCSI core */ | |
135 | usb_stor_report_bus_reset(us); | |
136 | ||
137 | mutex_unlock(&us->dev_mutex); | |
138 | return 0; | |
139 | } | |
140 | ||
141 | //----- fill_inquiry_response() --------------------- | |
142 | void fill_inquiry_response(struct us_data *us, unsigned char *data, unsigned int data_len) | |
143 | { | |
871f8477 | 144 | pr_info("usb --- fill_inquiry_response\n"); |
126bb03b AC |
145 | if (data_len<36) // You lose. |
146 | return; | |
147 | ||
148 | if (data[0]&0x20) | |
149 | { | |
150 | memset(data+8,0,28); | |
151 | } | |
152 | else | |
153 | { | |
154 | u16 bcdDevice = le16_to_cpu(us->pusb_dev->descriptor.bcdDevice); | |
155 | memcpy(data+8, us->unusual_dev->vendorName, | |
156 | strlen(us->unusual_dev->vendorName) > 8 ? 8 : | |
157 | strlen(us->unusual_dev->vendorName)); | |
158 | memcpy(data+16, us->unusual_dev->productName, | |
159 | strlen(us->unusual_dev->productName) > 16 ? 16 : | |
160 | strlen(us->unusual_dev->productName)); | |
161 | data[32] = 0x30 + ((bcdDevice>>12) & 0x0F); | |
162 | data[33] = 0x30 + ((bcdDevice>>8) & 0x0F); | |
163 | data[34] = 0x30 + ((bcdDevice>>4) & 0x0F); | |
164 | data[35] = 0x30 + ((bcdDevice) & 0x0F); | |
165 | } | |
166 | usb_stor_set_xfer_buf(us, data, data_len, us->srb, TO_XFER_BUF); | |
167 | } | |
168 | ||
169 | //----- usb_stor_control_thread() --------------------- | |
170 | static int usb_stor_control_thread(void * __us) | |
171 | { | |
172 | struct us_data *us = (struct us_data *)__us; | |
173 | struct Scsi_Host *host = us_to_host(us); | |
174 | ||
871f8477 | 175 | pr_info("usb --- usb_stor_control_thread\n"); |
126bb03b AC |
176 | for(;;) |
177 | { | |
178 | if (wait_for_completion_interruptible(&us->cmnd_ready)) | |
179 | break; | |
180 | ||
181 | /* lock the device pointers */ | |
182 | mutex_lock(&(us->dev_mutex)); | |
183 | ||
184 | /* if the device has disconnected, we are free to exit */ | |
a8718692 | 185 | if (test_bit(US_FLIDX_DISCONNECTING, &us->dflags)) { |
126bb03b AC |
186 | mutex_unlock(&us->dev_mutex); |
187 | break; | |
a8718692 | 188 | } |
126bb03b AC |
189 | |
190 | /* lock access to the state */ | |
191 | scsi_lock(host); | |
192 | ||
193 | /* When we are called with no command pending, we're done */ | |
194 | if (us->srb == NULL) | |
195 | { | |
196 | scsi_unlock(host); | |
197 | mutex_unlock(&us->dev_mutex); | |
198 | //US_DEBUGP("-- exiting\n"); | |
199 | break; | |
200 | } | |
201 | ||
202 | /* has the command timed out *already* ? */ | |
203 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) | |
204 | { | |
205 | us->srb->result = DID_ABORT << 16; | |
206 | goto SkipForAbort; | |
207 | } | |
208 | ||
209 | scsi_unlock(host); | |
210 | ||
211 | if (us->srb->sc_data_direction == DMA_BIDIRECTIONAL) | |
212 | { | |
213 | us->srb->result = DID_ERROR << 16; | |
214 | } | |
215 | else if (us->srb->device->id && !(us->fflags & US_FL_SCM_MULT_TARG)) | |
216 | { | |
217 | us->srb->result = DID_BAD_TARGET << 16; | |
218 | } | |
219 | else if (us->srb->device->lun > us->max_lun) | |
220 | { | |
221 | us->srb->result = DID_BAD_TARGET << 16; | |
222 | } | |
223 | else if ((us->srb->cmnd[0] == INQUIRY) && (us->fflags & US_FL_FIX_INQUIRY)) | |
224 | { | |
225 | unsigned char data_ptr[36] = {0x00, 0x80, 0x02, 0x02, 0x1F, 0x00, 0x00, 0x00}; | |
226 | ||
227 | fill_inquiry_response(us, data_ptr, 36); | |
228 | us->srb->result = SAM_STAT_GOOD; | |
229 | } | |
230 | else | |
231 | { | |
232 | us->proto_handler(us->srb, us); | |
233 | } | |
234 | ||
235 | /* lock access to the state */ | |
236 | scsi_lock(host); | |
237 | ||
238 | /* indicate that the command is done */ | |
239 | if (us->srb->result != DID_ABORT << 16) | |
240 | { | |
241 | us->srb->scsi_done(us->srb); | |
242 | } | |
243 | else | |
244 | { | |
245 | SkipForAbort: | |
871f8477 | 246 | pr_info("scsi command aborted\n"); |
126bb03b AC |
247 | } |
248 | ||
249 | if (test_bit(US_FLIDX_TIMED_OUT, &us->dflags)) | |
250 | { | |
251 | complete(&(us->notify)); | |
252 | ||
253 | /* Allow USB transfers to resume */ | |
254 | clear_bit(US_FLIDX_ABORTING, &us->dflags); | |
255 | clear_bit(US_FLIDX_TIMED_OUT, &us->dflags); | |
256 | } | |
257 | ||
258 | /* finished working on this command */ | |
259 | us->srb = NULL; | |
260 | scsi_unlock(host); | |
261 | ||
262 | /* unlock the device pointers */ | |
263 | mutex_unlock(&us->dev_mutex); | |
264 | } /* for (;;) */ | |
265 | ||
266 | /* Wait until we are told to stop */ | |
267 | for (;;) | |
268 | { | |
269 | set_current_state(TASK_INTERRUPTIBLE); | |
270 | if (kthread_should_stop()) | |
271 | break; | |
272 | schedule(); | |
273 | } | |
274 | __set_current_state(TASK_RUNNING); | |
275 | return 0; | |
276 | } | |
277 | ||
278 | //----- associate_dev() --------------------- | |
279 | static int associate_dev(struct us_data *us, struct usb_interface *intf) | |
280 | { | |
871f8477 | 281 | pr_info("usb --- associate_dev\n"); |
126bb03b AC |
282 | |
283 | /* Fill in the device-related fields */ | |
284 | us->pusb_dev = interface_to_usbdev(intf); | |
285 | us->pusb_intf = intf; | |
286 | us->ifnum = intf->cur_altsetting->desc.bInterfaceNumber; | |
287 | ||
288 | /* Store our private data in the interface */ | |
289 | usb_set_intfdata(intf, us); | |
290 | ||
291 | /* Allocate the device-related DMA-mapped buffers */ | |
292 | us->cr = usb_alloc_coherent(us->pusb_dev, sizeof(*us->cr), GFP_KERNEL, &us->cr_dma); | |
293 | if (!us->cr) | |
294 | { | |
871f8477 | 295 | pr_info("usb_ctrlrequest allocation failed\n"); |
126bb03b AC |
296 | return -ENOMEM; |
297 | } | |
298 | ||
299 | us->iobuf = usb_alloc_coherent(us->pusb_dev, US_IOBUF_SIZE, GFP_KERNEL, &us->iobuf_dma); | |
300 | if (!us->iobuf) | |
301 | { | |
871f8477 | 302 | pr_info("I/O buffer allocation failed\n"); |
126bb03b AC |
303 | return -ENOMEM; |
304 | } | |
305 | ||
306 | us->sensebuf = kmalloc(US_SENSE_SIZE, GFP_KERNEL); | |
307 | if (!us->sensebuf) | |
308 | { | |
871f8477 | 309 | pr_info("Sense buffer allocation failed\n"); |
126bb03b AC |
310 | return -ENOMEM; |
311 | } | |
312 | return 0; | |
313 | } | |
314 | ||
315 | //----- get_device_info() --------------------- | |
316 | static int get_device_info(struct us_data *us, const struct usb_device_id *id) | |
317 | { | |
318 | struct usb_device *dev = us->pusb_dev; | |
319 | struct usb_interface_descriptor *idesc = &us->pusb_intf->cur_altsetting->desc; | |
320 | ||
871f8477 | 321 | pr_info("usb --- get_device_info\n"); |
126bb03b AC |
322 | |
323 | us->subclass = idesc->bInterfaceSubClass; | |
324 | us->protocol = idesc->bInterfaceProtocol; | |
325 | us->fflags = USB_US_ORIG_FLAGS(id->driver_info); | |
326 | us->Power_IsResum = false; | |
327 | ||
328 | if (us->fflags & US_FL_IGNORE_DEVICE) | |
329 | { | |
871f8477 | 330 | pr_info("device ignored\n"); |
126bb03b AC |
331 | return -ENODEV; |
332 | } | |
333 | ||
334 | if (dev->speed != USB_SPEED_HIGH) | |
335 | us->fflags &= ~US_FL_GO_SLOW; | |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
340 | //----- get_transport() --------------------- | |
341 | static int get_transport(struct us_data *us) | |
342 | { | |
871f8477 | 343 | pr_info("usb --- get_transport\n"); |
126bb03b | 344 | switch (us->protocol) { |
bceadddd | 345 | case USB_PR_BULK: |
126bb03b AC |
346 | us->transport_name = "Bulk"; |
347 | us->transport = usb_stor_Bulk_transport; | |
348 | us->transport_reset = usb_stor_Bulk_reset; | |
349 | break; | |
350 | ||
351 | default: | |
352 | return -EIO; | |
353 | } | |
871f8477 | 354 | /* pr_info("Transport: %s\n", us->transport_name); */ |
126bb03b AC |
355 | |
356 | /* fix for single-lun devices */ | |
357 | if (us->fflags & US_FL_SINGLE_LUN) | |
358 | us->max_lun = 0; | |
359 | return 0; | |
360 | } | |
361 | ||
362 | //----- get_protocol() --------------------- | |
363 | static int get_protocol(struct us_data *us) | |
364 | { | |
871f8477 CYC |
365 | pr_info("usb --- get_protocol\n"); |
366 | pr_info("us->pusb_dev->descriptor.idVendor = %x\n", | |
367 | us->pusb_dev->descriptor.idVendor); | |
368 | pr_info("us->pusb_dev->descriptor.idProduct = %x\n", | |
369 | us->pusb_dev->descriptor.idProduct); | |
126bb03b | 370 | switch (us->subclass) { |
bceadddd | 371 | case USB_SC_SCSI: |
126bb03b AC |
372 | us->protocol_name = "Transparent SCSI"; |
373 | if( (us->pusb_dev->descriptor.idVendor == 0x0CF2) && (us->pusb_dev->descriptor.idProduct == 0x6250) ) | |
374 | us->proto_handler = ENE_stor_invoke_transport; | |
375 | else | |
376 | us->proto_handler = usb_stor_invoke_transport; | |
377 | break; | |
378 | ||
379 | default: | |
380 | return -EIO; | |
381 | } | |
871f8477 | 382 | /* pr_info("Protocol: %s\n", us->protocol_name); */ |
126bb03b AC |
383 | return 0; |
384 | } | |
385 | ||
386 | //----- get_pipes() --------------------- | |
387 | static int get_pipes(struct us_data *us) | |
388 | { | |
389 | struct usb_host_interface *altsetting = us->pusb_intf->cur_altsetting; | |
390 | int i; | |
391 | struct usb_endpoint_descriptor *ep; | |
392 | struct usb_endpoint_descriptor *ep_in = NULL; | |
393 | struct usb_endpoint_descriptor *ep_out = NULL; | |
394 | struct usb_endpoint_descriptor *ep_int = NULL; | |
395 | ||
871f8477 | 396 | pr_info("usb --- get_pipes\n"); |
126bb03b AC |
397 | |
398 | for (i = 0; i < altsetting->desc.bNumEndpoints; i++) | |
399 | { | |
400 | ep = &altsetting->endpoint[i].desc; | |
401 | ||
402 | if (usb_endpoint_xfer_bulk(ep)) | |
403 | { | |
404 | if (usb_endpoint_dir_in(ep)) | |
405 | { | |
406 | if (!ep_in) | |
407 | ep_in = ep; | |
408 | } | |
409 | else | |
410 | { | |
411 | if (!ep_out) | |
412 | ep_out = ep; | |
413 | } | |
414 | } | |
415 | else if (usb_endpoint_is_int_in(ep)) | |
416 | { | |
417 | if (!ep_int) | |
418 | ep_int = ep; | |
419 | } | |
420 | } | |
421 | ||
bceadddd | 422 | if (!ep_in || !ep_out || (us->protocol == USB_PR_CBI && !ep_int)) |
126bb03b | 423 | { |
871f8477 | 424 | pr_info("Endpoint sanity check failed! Rejecting dev.\n"); |
126bb03b AC |
425 | return -EIO; |
426 | } | |
427 | ||
428 | /* Calculate and store the pipe values */ | |
429 | us->send_ctrl_pipe = usb_sndctrlpipe(us->pusb_dev, 0); | |
430 | us->recv_ctrl_pipe = usb_rcvctrlpipe(us->pusb_dev, 0); | |
431 | us->send_bulk_pipe = usb_sndbulkpipe(us->pusb_dev, ep_out->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
432 | us->recv_bulk_pipe = usb_rcvbulkpipe(us->pusb_dev, ep_in->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
433 | if (ep_int) | |
434 | { | |
435 | us->recv_intr_pipe = usb_rcvintpipe(us->pusb_dev, ep_int->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK); | |
436 | us->ep_bInterval = ep_int->bInterval; | |
437 | } | |
438 | return 0; | |
439 | } | |
440 | ||
441 | //----- usb_stor_acquire_resources() --------------------- | |
442 | static int usb_stor_acquire_resources(struct us_data *us) | |
443 | { | |
444 | struct task_struct *th; | |
445 | ||
871f8477 | 446 | pr_info("usb --- usb_stor_acquire_resources\n"); |
126bb03b AC |
447 | us->current_urb = usb_alloc_urb(0, GFP_KERNEL); |
448 | if (!us->current_urb) | |
449 | { | |
871f8477 | 450 | pr_info("URB allocation failed\n"); |
126bb03b AC |
451 | return -ENOMEM; |
452 | } | |
453 | ||
454 | /* Start up our control thread */ | |
455 | th = kthread_run(usb_stor_control_thread, us, "eucr-storage"); | |
456 | if (IS_ERR(th)) | |
457 | { | |
871f8477 | 458 | pr_info("Unable to start control thread\n"); |
126bb03b AC |
459 | return PTR_ERR(th); |
460 | } | |
461 | us->ctl_thread = th; | |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | //----- usb_stor_release_resources() --------------------- | |
467 | static void usb_stor_release_resources(struct us_data *us) | |
468 | { | |
871f8477 | 469 | pr_info("usb --- usb_stor_release_resources\n"); |
126bb03b AC |
470 | |
471 | SM_FreeMem(); | |
472 | ||
473 | complete(&us->cmnd_ready); | |
474 | if (us->ctl_thread) | |
475 | kthread_stop(us->ctl_thread); | |
476 | ||
477 | /* Call the destructor routine, if it exists */ | |
478 | if (us->extra_destructor) | |
479 | { | |
871f8477 | 480 | pr_info("-- calling extra_destructor()\n"); |
126bb03b AC |
481 | us->extra_destructor(us->extra); |
482 | } | |
483 | ||
484 | /* Free the extra data and the URB */ | |
485 | kfree(us->extra); | |
486 | usb_free_urb(us->current_urb); | |
487 | } | |
488 | ||
489 | //----- dissociate_dev() --------------------- | |
490 | static void dissociate_dev(struct us_data *us) | |
491 | { | |
871f8477 | 492 | pr_info("usb --- dissociate_dev\n"); |
126bb03b AC |
493 | |
494 | kfree(us->sensebuf); | |
495 | ||
496 | /* Free the device-related DMA-mapped buffers */ | |
497 | if (us->cr) | |
498 | usb_free_coherent(us->pusb_dev, sizeof(*us->cr), us->cr, us->cr_dma); | |
499 | if (us->iobuf) | |
500 | usb_free_coherent(us->pusb_dev, US_IOBUF_SIZE, us->iobuf, us->iobuf_dma); | |
501 | ||
502 | /* Remove our private data from the interface */ | |
503 | usb_set_intfdata(us->pusb_intf, NULL); | |
504 | } | |
505 | ||
506 | //----- quiesce_and_remove_host() --------------------- | |
507 | static void quiesce_and_remove_host(struct us_data *us) | |
508 | { | |
509 | struct Scsi_Host *host = us_to_host(us); | |
510 | ||
871f8477 | 511 | pr_info("usb --- quiesce_and_remove_host\n"); |
126bb03b AC |
512 | |
513 | /* If the device is really gone, cut short reset delays */ | |
514 | if (us->pusb_dev->state == USB_STATE_NOTATTACHED) | |
515 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
516 | ||
517 | /* Prevent SCSI-scanning (if it hasn't started yet) | |
518 | * and wait for the SCSI-scanning thread to stop. | |
519 | */ | |
520 | set_bit(US_FLIDX_DONT_SCAN, &us->dflags); | |
521 | wake_up(&us->delay_wait); | |
522 | wait_for_completion(&us->scanning_done); | |
523 | ||
524 | /* Removing the host will perform an orderly shutdown: caches | |
525 | * synchronized, disks spun down, etc. | |
526 | */ | |
527 | scsi_remove_host(host); | |
528 | ||
529 | /* Prevent any new commands from being accepted and cut short | |
530 | * reset delays. | |
531 | */ | |
532 | scsi_lock(host); | |
533 | set_bit(US_FLIDX_DISCONNECTING, &us->dflags); | |
534 | scsi_unlock(host); | |
535 | wake_up(&us->delay_wait); | |
536 | } | |
537 | ||
538 | //----- release_everything() --------------------- | |
539 | static void release_everything(struct us_data *us) | |
540 | { | |
871f8477 | 541 | pr_info("usb --- release_everything\n"); |
126bb03b AC |
542 | |
543 | usb_stor_release_resources(us); | |
544 | dissociate_dev(us); | |
545 | scsi_host_put(us_to_host(us)); | |
546 | } | |
547 | ||
548 | //----- usb_stor_scan_thread() --------------------- | |
549 | static int usb_stor_scan_thread(void * __us) | |
550 | { | |
551 | struct us_data *us = (struct us_data *)__us; | |
552 | ||
871f8477 CYC |
553 | pr_info("usb --- usb_stor_scan_thread\n"); |
554 | pr_info("EUCR : device found at %d\n", us->pusb_dev->devnum); | |
126bb03b | 555 | |
a8718692 AC |
556 | set_freezable(); |
557 | /* Wait for the timeout to expire or for a disconnect */ | |
558 | if (delay_use > 0) { | |
559 | wait_event_freezable_timeout(us->delay_wait, | |
560 | test_bit(US_FLIDX_DONT_SCAN, &us->dflags), | |
561 | delay_use * HZ); | |
562 | } | |
126bb03b AC |
563 | |
564 | /* If the device is still connected, perform the scanning */ | |
565 | if (!test_bit(US_FLIDX_DONT_SCAN, &us->dflags)) | |
566 | { | |
567 | /* For bulk-only devices, determine the max LUN value */ | |
bceadddd | 568 | if (us->protocol == USB_PR_BULK && !(us->fflags & US_FL_SINGLE_LUN)) |
126bb03b AC |
569 | { |
570 | mutex_lock(&us->dev_mutex); | |
571 | us->max_lun = usb_stor_Bulk_max_lun(us); | |
572 | mutex_unlock(&us->dev_mutex); | |
573 | } | |
574 | scsi_scan_host(us_to_host(us)); | |
871f8477 | 575 | pr_info("EUCR : device scan complete\n"); |
126bb03b AC |
576 | } |
577 | complete_and_exit(&us->scanning_done, 0); | |
578 | } | |
579 | ||
580 | //----- eucr_probe() --------------------- | |
581 | static int eucr_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
582 | { | |
583 | struct Scsi_Host *host; | |
584 | struct us_data *us; | |
585 | int result; | |
41e568d1 | 586 | BYTE MiscReg03 = 0; |
126bb03b AC |
587 | struct task_struct *th; |
588 | ||
871f8477 | 589 | pr_info("usb --- eucr_probe\n"); |
126bb03b AC |
590 | |
591 | host = scsi_host_alloc(&usb_stor_host_template, sizeof(*us)); | |
592 | if (!host) | |
593 | { | |
871f8477 | 594 | pr_info("Unable to allocate the scsi host\n"); |
126bb03b AC |
595 | return -ENOMEM; |
596 | } | |
597 | ||
598 | /* Allow 16-byte CDBs and thus > 2TB */ | |
599 | host->max_cmd_len = 16; | |
600 | us = host_to_us(host); | |
601 | memset(us, 0, sizeof(struct us_data)); | |
602 | mutex_init(&(us->dev_mutex)); | |
603 | init_completion(&us->cmnd_ready); | |
604 | init_completion(&(us->notify)); | |
605 | init_waitqueue_head(&us->delay_wait); | |
606 | init_completion(&us->scanning_done); | |
607 | ||
608 | /* Associate the us_data structure with the USB device */ | |
609 | result = associate_dev(us, intf); | |
610 | if (result) | |
611 | goto BadDevice; | |
612 | ||
613 | /* Get Device info */ | |
614 | result = get_device_info(us, id); | |
615 | if (result) | |
616 | goto BadDevice; | |
617 | ||
618 | /* Get the transport, protocol, and pipe settings */ | |
619 | result = get_transport(us); | |
620 | if (result) | |
621 | goto BadDevice; | |
622 | result = get_protocol(us); | |
623 | if (result) | |
624 | goto BadDevice; | |
625 | result = get_pipes(us); | |
626 | if (result) | |
627 | goto BadDevice; | |
628 | ||
629 | /* Acquire all the other resources and add the host */ | |
630 | result = usb_stor_acquire_resources(us); | |
631 | if (result) | |
632 | goto BadDevice; | |
633 | ||
634 | result = scsi_add_host(host, &intf->dev); | |
635 | if (result) | |
636 | { | |
871f8477 | 637 | pr_info("Unable to add the scsi host\n"); |
126bb03b AC |
638 | goto BadDevice; |
639 | } | |
640 | ||
641 | /* Start up the thread for delayed SCSI-device scanning */ | |
642 | th = kthread_create(usb_stor_scan_thread, us, "eucr-stor-scan"); | |
643 | if (IS_ERR(th)) | |
644 | { | |
871f8477 | 645 | pr_info("Unable to start the device-scanning thread\n"); |
126bb03b AC |
646 | complete(&us->scanning_done); |
647 | quiesce_and_remove_host(us); | |
648 | result = PTR_ERR(th); | |
649 | goto BadDevice; | |
650 | } | |
651 | wake_up_process(th); | |
41e568d1 | 652 | |
653 | /* probe card type */ | |
654 | result = ENE_Read_BYTE(us, REG_CARD_STATUS, &MiscReg03); | |
655 | if (result != USB_STOR_XFER_GOOD) { | |
656 | result = USB_STOR_TRANSPORT_ERROR; | |
657 | quiesce_and_remove_host(us); | |
658 | goto BadDevice; | |
659 | } | |
660 | ||
661 | if (!(MiscReg03 & 0x02)) { | |
662 | result = -ENODEV; | |
663 | quiesce_and_remove_host(us); | |
871f8477 | 664 | pr_info("keucr: The driver only supports SM/MS card.\ |
41e568d1 | 665 | To use SD card, \ |
666 | please build driver/usb/storage/ums-eneub6250.ko\n"); | |
667 | goto BadDevice; | |
668 | } | |
669 | ||
126bb03b AC |
670 | return 0; |
671 | ||
672 | /* We come here if there are any problems */ | |
673 | BadDevice: | |
871f8477 | 674 | pr_info("usb --- eucr_probe failed\n"); |
126bb03b AC |
675 | release_everything(us); |
676 | return result; | |
677 | } | |
678 | ||
679 | //----- eucr_disconnect() --------------------- | |
680 | static void eucr_disconnect(struct usb_interface *intf) | |
681 | { | |
682 | struct us_data *us = usb_get_intfdata(intf); | |
683 | ||
871f8477 | 684 | pr_info("usb --- eucr_disconnect\n"); |
126bb03b AC |
685 | quiesce_and_remove_host(us); |
686 | release_everything(us); | |
687 | } | |
688 | ||
689 | /*********************************************************************** | |
690 | * Initialization and registration | |
691 | ***********************************************************************/ | |
692 | ||
693 | //----- usb_storage_driver() --------------------- | |
694 | static struct usb_driver usb_storage_driver = { | |
695 | .name = "eucr", | |
696 | .probe = eucr_probe, | |
697 | .suspend = eucr_suspend, | |
698 | .resume = eucr_resume, | |
699 | .reset_resume = eucr_reset_resume, | |
700 | .disconnect = eucr_disconnect, | |
701 | .pre_reset = eucr_pre_reset, | |
702 | .post_reset = eucr_post_reset, | |
703 | .id_table = eucr_usb_ids, | |
704 | .soft_unbind = 1, | |
705 | }; | |
706 | ||
707 | //----- usb_stor_init() --------------------- | |
708 | static int __init usb_stor_init(void) | |
709 | { | |
710 | int retval; | |
871f8477 | 711 | pr_info("usb --- usb_stor_init start\n"); |
126bb03b AC |
712 | |
713 | retval = usb_register(&usb_storage_driver); | |
714 | if (retval == 0) | |
871f8477 | 715 | pr_info("ENE USB Mass Storage support registered.\n"); |
126bb03b AC |
716 | |
717 | return retval; | |
718 | } | |
719 | ||
720 | //----- usb_stor_exit() --------------------- | |
721 | static void __exit usb_stor_exit(void) | |
722 | { | |
871f8477 | 723 | pr_info("usb --- usb_stor_exit\n"); |
126bb03b AC |
724 | |
725 | usb_deregister(&usb_storage_driver) ; | |
726 | } | |
727 | ||
728 | module_init(usb_stor_init); | |
729 | module_exit(usb_stor_exit); |