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a5c66e4b TO |
1 | /* |
2 | * USB FTDI client driver for Elan Digital Systems's Uxxx adapters | |
3 | * | |
4 | * Copyright(C) 2006 Elan Digital Systems Limited | |
5 | * http://www.elandigitalsystems.com | |
6 | * | |
7 | * Author and Maintainer - Tony Olech - Elan Digital Systems | |
8 | * tony.olech@elandigitalsystems.com | |
9 | * | |
10 | * This program is free software;you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License as | |
12 | * published by the Free Software Foundation, version 2. | |
13 | * | |
14 | * | |
15 | * This driver was written by Tony Olech(tony.olech@elandigitalsystems.com) | |
16 | * based on various USB client drivers in the 2.6.15 linux kernel | |
17 | * with constant reference to the 3rd Edition of Linux Device Drivers | |
18 | * published by O'Reilly | |
19 | * | |
20 | * The U132 adapter is a USB to CardBus adapter specifically designed | |
21 | * for PC cards that contain an OHCI host controller. Typical PC cards | |
22 | * are the Orange Mobile 3G Option GlobeTrotter Fusion card. | |
23 | * | |
24 | * The U132 adapter will *NOT *work with PC cards that do not contain | |
25 | * an OHCI controller. A simple way to test whether a PC card has an | |
26 | * OHCI controller as an interface is to insert the PC card directly | |
27 | * into a laptop(or desktop) with a CardBus slot and if "lspci" shows | |
28 | * a new USB controller and "lsusb -v" shows a new OHCI Host Controller | |
29 | * then there is a good chance that the U132 adapter will support the | |
30 | * PC card.(you also need the specific client driver for the PC card) | |
31 | * | |
32 | * Please inform the Author and Maintainer about any PC cards that | |
33 | * contain OHCI Host Controller and work when directly connected to | |
34 | * an embedded CardBus slot but do not work when they are connected | |
35 | * via an ELAN U132 adapter. | |
36 | * | |
37 | */ | |
a5c66e4b TO |
38 | #include <linux/kernel.h> |
39 | #include <linux/errno.h> | |
40 | #include <linux/init.h> | |
41 | #include <linux/list.h> | |
42 | #include <linux/ioctl.h> | |
43 | #include <linux/slab.h> | |
44 | #include <linux/module.h> | |
45 | #include <linux/kref.h> | |
46 | #include <asm/uaccess.h> | |
47 | #include <linux/usb.h> | |
48 | #include <linux/workqueue.h> | |
49 | #include <linux/platform_device.h> | |
50 | MODULE_AUTHOR("Tony Olech"); | |
51 | MODULE_DESCRIPTION("FTDI ELAN driver"); | |
52 | MODULE_LICENSE("GPL"); | |
53 | #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444) | |
54 | extern struct platform_driver u132_platform_driver; | |
55 | static struct workqueue_struct *status_queue; | |
56 | static struct workqueue_struct *command_queue; | |
57 | static struct workqueue_struct *respond_queue; | |
58 | /* | |
59 | * ftdi_module_lock exists to protect access to global variables | |
60 | * | |
61 | */ | |
62 | static struct semaphore ftdi_module_lock; | |
63 | static int ftdi_instances = 0; | |
64 | static struct list_head ftdi_static_list; | |
65 | /* | |
66 | * end of the global variables protected by ftdi_module_lock | |
67 | */ | |
68 | #include "usb_u132.h" | |
69 | #define TD_DEVNOTRESP 5 | |
70 | /* Define these values to match your devices*/ | |
71 | #define USB_FTDI_ELAN_VENDOR_ID 0x0403 | |
72 | #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea | |
73 | /* table of devices that work with this driver*/ | |
74 | static struct usb_device_id ftdi_elan_table[] = { | |
75 | {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)}, | |
76 | { /* Terminating entry */ } | |
77 | }; | |
78 | ||
79 | MODULE_DEVICE_TABLE(usb, ftdi_elan_table); | |
80 | /* only the jtag(firmware upgrade device) interface requires | |
81 | * a device file and corresponding minor number, but the | |
82 | * interface is created unconditionally - I suppose it could | |
83 | * be configured or not according to a module parameter. | |
84 | * But since we(now) require one interface per device, | |
85 | * and since it unlikely that a normal installation would | |
86 | * require more than a couple of elan-ftdi devices, 8 seems | |
87 | * like a reasonable limit to have here, and if someone | |
88 | * really requires more than 8 devices, then they can frig the | |
89 | * code and recompile | |
90 | */ | |
91 | #define USB_FTDI_ELAN_MINOR_BASE 192 | |
92 | #define COMMAND_BITS 5 | |
93 | #define COMMAND_SIZE (1<<COMMAND_BITS) | |
94 | #define COMMAND_MASK (COMMAND_SIZE-1) | |
95 | struct u132_command { | |
96 | u8 header; | |
97 | u16 length; | |
98 | u8 address; | |
99 | u8 width; | |
100 | u32 value; | |
101 | int follows; | |
102 | void *buffer; | |
103 | }; | |
104 | #define RESPOND_BITS 5 | |
105 | #define RESPOND_SIZE (1<<RESPOND_BITS) | |
106 | #define RESPOND_MASK (RESPOND_SIZE-1) | |
107 | struct u132_respond { | |
108 | u8 header; | |
109 | u8 address; | |
110 | u32 *value; | |
111 | int *result; | |
112 | struct completion wait_completion; | |
113 | }; | |
114 | struct u132_target { | |
115 | void *endp; | |
116 | struct urb *urb; | |
117 | int toggle_bits; | |
118 | int error_count; | |
119 | int condition_code; | |
120 | int repeat_number; | |
121 | int halted; | |
122 | int skipped; | |
123 | int actual; | |
124 | int non_null; | |
125 | int active; | |
126 | int abandoning; | |
127 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
128 | int toggle_bits, int error_count, int condition_code, | |
129 | int repeat_number, int halted, int skipped, int actual, | |
130 | int non_null); | |
131 | }; | |
132 | /* Structure to hold all of our device specific stuff*/ | |
133 | struct usb_ftdi { | |
134 | struct list_head ftdi_list; | |
135 | struct semaphore u132_lock; | |
136 | int command_next; | |
137 | int command_head; | |
138 | struct u132_command command[COMMAND_SIZE]; | |
139 | int respond_next; | |
140 | int respond_head; | |
141 | struct u132_respond respond[RESPOND_SIZE]; | |
142 | struct u132_target target[4]; | |
143 | char device_name[16]; | |
144 | unsigned synchronized:1; | |
145 | unsigned enumerated:1; | |
146 | unsigned registered:1; | |
147 | unsigned initialized:1; | |
148 | unsigned card_ejected:1; | |
149 | int function; | |
150 | int sequence_num; | |
151 | int disconnected; | |
152 | int gone_away; | |
153 | int stuck_status; | |
154 | int status_queue_delay; | |
155 | struct semaphore sw_lock; | |
156 | struct usb_device *udev; | |
157 | struct usb_interface *interface; | |
158 | struct usb_class_driver *class; | |
159 | struct work_struct status_work; | |
160 | struct work_struct command_work; | |
161 | struct work_struct respond_work; | |
162 | struct u132_platform_data platform_data; | |
163 | struct resource resources[0]; | |
164 | struct platform_device platform_dev; | |
165 | unsigned char *bulk_in_buffer; | |
166 | size_t bulk_in_size; | |
167 | size_t bulk_in_last; | |
168 | size_t bulk_in_left; | |
169 | __u8 bulk_in_endpointAddr; | |
170 | __u8 bulk_out_endpointAddr; | |
171 | struct kref kref; | |
172 | u32 controlreg; | |
173 | u8 response[4 + 1024]; | |
174 | int expected; | |
175 | int recieved; | |
176 | int ed_found; | |
177 | }; | |
178 | #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref) | |
179 | #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \ | |
180 | platform_dev) | |
181 | static struct usb_driver ftdi_elan_driver; | |
182 | static void ftdi_elan_delete(struct kref *kref) | |
183 | { | |
184 | struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref); | |
185 | dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi); | |
186 | usb_put_dev(ftdi->udev); | |
187 | ftdi->disconnected += 1; | |
188 | down(&ftdi_module_lock); | |
189 | list_del_init(&ftdi->ftdi_list); | |
190 | ftdi_instances -= 1; | |
191 | up(&ftdi_module_lock); | |
192 | kfree(ftdi->bulk_in_buffer); | |
193 | ftdi->bulk_in_buffer = NULL; | |
194 | } | |
195 | ||
196 | static void ftdi_elan_put_kref(struct usb_ftdi *ftdi) | |
197 | { | |
198 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
199 | } | |
200 | ||
201 | static void ftdi_elan_get_kref(struct usb_ftdi *ftdi) | |
202 | { | |
203 | kref_get(&ftdi->kref); | |
204 | } | |
205 | ||
206 | static void ftdi_elan_init_kref(struct usb_ftdi *ftdi) | |
207 | { | |
208 | kref_init(&ftdi->kref); | |
209 | } | |
210 | ||
211 | static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
212 | { | |
213 | if (delta > 0) { | |
214 | if (queue_delayed_work(status_queue, &ftdi->status_work, delta)) | |
215 | return; | |
216 | } else if (queue_work(status_queue, &ftdi->status_work)) | |
217 | return; | |
218 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
219 | return; | |
220 | } | |
221 | ||
222 | static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
223 | { | |
224 | if (delta > 0) { | |
225 | if (queue_delayed_work(status_queue, &ftdi->status_work, delta)) | |
226 | kref_get(&ftdi->kref); | |
227 | } else if (queue_work(status_queue, &ftdi->status_work)) | |
228 | kref_get(&ftdi->kref); | |
229 | return; | |
230 | } | |
231 | ||
232 | static void ftdi_status_cancel_work(struct usb_ftdi *ftdi) | |
233 | { | |
234 | if (cancel_delayed_work(&ftdi->status_work)) | |
235 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
236 | } | |
237 | ||
238 | static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
239 | { | |
240 | if (delta > 0) { | |
241 | if (queue_delayed_work(command_queue, &ftdi->command_work, | |
242 | delta)) | |
243 | return; | |
244 | } else if (queue_work(command_queue, &ftdi->command_work)) | |
245 | return; | |
246 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
247 | return; | |
248 | } | |
249 | ||
250 | static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
251 | { | |
252 | if (delta > 0) { | |
253 | if (queue_delayed_work(command_queue, &ftdi->command_work, | |
254 | delta)) | |
255 | kref_get(&ftdi->kref); | |
256 | } else if (queue_work(command_queue, &ftdi->command_work)) | |
257 | kref_get(&ftdi->kref); | |
258 | return; | |
259 | } | |
260 | ||
261 | static void ftdi_command_cancel_work(struct usb_ftdi *ftdi) | |
262 | { | |
263 | if (cancel_delayed_work(&ftdi->command_work)) | |
264 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
265 | } | |
266 | ||
267 | static void ftdi_response_requeue_work(struct usb_ftdi *ftdi, | |
268 | unsigned int delta) | |
269 | { | |
270 | if (delta > 0) { | |
271 | if (queue_delayed_work(respond_queue, &ftdi->respond_work, | |
272 | delta)) | |
273 | return; | |
274 | } else if (queue_work(respond_queue, &ftdi->respond_work)) | |
275 | return; | |
276 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
277 | return; | |
278 | } | |
279 | ||
280 | static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
281 | { | |
282 | if (delta > 0) { | |
283 | if (queue_delayed_work(respond_queue, &ftdi->respond_work, | |
284 | delta)) | |
285 | kref_get(&ftdi->kref); | |
286 | } else if (queue_work(respond_queue, &ftdi->respond_work)) | |
287 | kref_get(&ftdi->kref); | |
288 | return; | |
289 | } | |
290 | ||
291 | static void ftdi_response_cancel_work(struct usb_ftdi *ftdi) | |
292 | { | |
293 | if (cancel_delayed_work(&ftdi->respond_work)) | |
294 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
295 | } | |
296 | ||
297 | void ftdi_elan_gone_away(struct platform_device *pdev) | |
298 | { | |
299 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
300 | ftdi->gone_away += 1; | |
301 | ftdi_elan_put_kref(ftdi); | |
302 | } | |
303 | ||
304 | ||
305 | EXPORT_SYMBOL_GPL(ftdi_elan_gone_away); | |
306 | void ftdi_release_platform_dev(struct device *dev) | |
307 | { | |
308 | dev->parent = NULL; | |
309 | } | |
310 | ||
311 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
312 | struct u132_target *target, u8 *buffer, int length); | |
313 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi); | |
314 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi); | |
315 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi); | |
316 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi); | |
317 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi); | |
318 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi); | |
319 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi); | |
320 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi); | |
321 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi); | |
322 | static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi) | |
323 | { | |
324 | int result; | |
325 | if (ftdi->platform_dev.dev.parent) | |
326 | return -EBUSY; | |
327 | ftdi_elan_get_kref(ftdi); | |
328 | ftdi->platform_data.potpg = 100; | |
329 | ftdi->platform_data.reset = NULL; | |
330 | ftdi->platform_dev.id = ftdi->sequence_num; | |
331 | ftdi->platform_dev.resource = ftdi->resources; | |
332 | ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources); | |
333 | ftdi->platform_dev.dev.platform_data = &ftdi->platform_data; | |
334 | ftdi->platform_dev.dev.parent = NULL; | |
335 | ftdi->platform_dev.dev.release = ftdi_release_platform_dev; | |
336 | ftdi->platform_dev.dev.dma_mask = NULL; | |
337 | snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd"); | |
338 | ftdi->platform_dev.name = ftdi->device_name; | |
339 | dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd"); | |
340 | request_module("u132_hcd"); | |
341 | dev_info(&ftdi->udev->dev, "registering '%s'\n", | |
342 | ftdi->platform_dev.name); | |
343 | result = platform_device_register(&ftdi->platform_dev); | |
344 | return result; | |
345 | } | |
346 | ||
347 | static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi) | |
348 | { | |
349 | down(&ftdi->u132_lock); | |
350 | while (ftdi->respond_next > ftdi->respond_head) { | |
351 | struct u132_respond *respond = &ftdi->respond[RESPOND_MASK & | |
352 | ftdi->respond_head++]; | |
353 | *respond->result = -ESHUTDOWN; | |
354 | *respond->value = 0; | |
355 | complete(&respond->wait_completion); | |
356 | } up(&ftdi->u132_lock); | |
357 | } | |
358 | ||
359 | static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi) | |
360 | { | |
361 | int ed_number = 4; | |
362 | down(&ftdi->u132_lock); | |
363 | while (ed_number-- > 0) { | |
364 | struct u132_target *target = &ftdi->target[ed_number]; | |
365 | if (target->active == 1) { | |
366 | target->condition_code = TD_DEVNOTRESP; | |
367 | up(&ftdi->u132_lock); | |
368 | ftdi_elan_do_callback(ftdi, target, NULL, 0); | |
369 | down(&ftdi->u132_lock); | |
370 | } | |
371 | } | |
372 | ftdi->recieved = 0; | |
373 | ftdi->expected = 4; | |
374 | ftdi->ed_found = 0; | |
375 | up(&ftdi->u132_lock); | |
376 | } | |
377 | ||
378 | static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi) | |
379 | { | |
380 | int ed_number = 4; | |
381 | down(&ftdi->u132_lock); | |
382 | while (ed_number-- > 0) { | |
383 | struct u132_target *target = &ftdi->target[ed_number]; | |
384 | target->abandoning = 1; | |
385 | wait_1:if (target->active == 1) { | |
386 | int command_size = ftdi->command_next - | |
387 | ftdi->command_head; | |
388 | if (command_size < COMMAND_SIZE) { | |
389 | struct u132_command *command = &ftdi->command[ | |
390 | COMMAND_MASK & ftdi->command_next]; | |
391 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
392 | command->length = 0x00; | |
393 | command->address = 0x00; | |
394 | command->width = 0x00; | |
395 | command->follows = 0; | |
396 | command->value = 0; | |
397 | command->buffer = &command->value; | |
398 | ftdi->command_next += 1; | |
399 | ftdi_elan_kick_command_queue(ftdi); | |
400 | } else { | |
401 | up(&ftdi->u132_lock); | |
402 | msleep(100); | |
403 | down(&ftdi->u132_lock); | |
404 | goto wait_1; | |
405 | } | |
406 | } | |
407 | wait_2:if (target->active == 1) { | |
408 | int command_size = ftdi->command_next - | |
409 | ftdi->command_head; | |
410 | if (command_size < COMMAND_SIZE) { | |
411 | struct u132_command *command = &ftdi->command[ | |
412 | COMMAND_MASK & ftdi->command_next]; | |
413 | command->header = 0x90 | (ed_number << 5); | |
414 | command->length = 0x00; | |
415 | command->address = 0x00; | |
416 | command->width = 0x00; | |
417 | command->follows = 0; | |
418 | command->value = 0; | |
419 | command->buffer = &command->value; | |
420 | ftdi->command_next += 1; | |
421 | ftdi_elan_kick_command_queue(ftdi); | |
422 | } else { | |
423 | up(&ftdi->u132_lock); | |
424 | msleep(100); | |
425 | down(&ftdi->u132_lock); | |
426 | goto wait_2; | |
427 | } | |
428 | } | |
429 | } | |
430 | ftdi->recieved = 0; | |
431 | ftdi->expected = 4; | |
432 | ftdi->ed_found = 0; | |
433 | up(&ftdi->u132_lock); | |
434 | } | |
435 | ||
436 | static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi) | |
437 | { | |
438 | int ed_number = 4; | |
439 | down(&ftdi->u132_lock); | |
440 | while (ed_number-- > 0) { | |
441 | struct u132_target *target = &ftdi->target[ed_number]; | |
442 | target->abandoning = 1; | |
443 | wait:if (target->active == 1) { | |
444 | int command_size = ftdi->command_next - | |
445 | ftdi->command_head; | |
446 | if (command_size < COMMAND_SIZE) { | |
447 | struct u132_command *command = &ftdi->command[ | |
448 | COMMAND_MASK & ftdi->command_next]; | |
449 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
450 | command->length = 0x00; | |
451 | command->address = 0x00; | |
452 | command->width = 0x00; | |
453 | command->follows = 0; | |
454 | command->value = 0; | |
455 | command->buffer = &command->value; | |
456 | ftdi->command_next += 1; | |
457 | ftdi_elan_kick_command_queue(ftdi); | |
458 | } else { | |
459 | up(&ftdi->u132_lock); | |
460 | msleep(100); | |
461 | down(&ftdi->u132_lock); | |
462 | goto wait; | |
463 | } | |
464 | } | |
465 | } | |
466 | ftdi->recieved = 0; | |
467 | ftdi->expected = 4; | |
468 | ftdi->ed_found = 0; | |
469 | up(&ftdi->u132_lock); | |
470 | } | |
471 | ||
472 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi) | |
473 | { | |
474 | ftdi_command_queue_work(ftdi, 0); | |
475 | return; | |
476 | } | |
477 | ||
478 | static void ftdi_elan_command_work(void *data) | |
479 | { | |
480 | struct usb_ftdi *ftdi = data; | |
481 | if (ftdi->disconnected > 0) { | |
482 | ftdi_elan_put_kref(ftdi); | |
483 | return; | |
484 | } else { | |
485 | int retval = ftdi_elan_command_engine(ftdi); | |
486 | if (retval == -ESHUTDOWN) { | |
487 | ftdi->disconnected += 1; | |
488 | } else if (retval == -ENODEV) { | |
489 | ftdi->disconnected += 1; | |
490 | } else if (retval) | |
491 | dev_err(&ftdi->udev->dev, "command error %d\n", retval); | |
492 | ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10)); | |
493 | return; | |
494 | } | |
495 | } | |
496 | ||
497 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi) | |
498 | { | |
499 | ftdi_respond_queue_work(ftdi, 0); | |
500 | return; | |
501 | } | |
502 | ||
503 | static void ftdi_elan_respond_work(void *data) | |
504 | { | |
505 | struct usb_ftdi *ftdi = data; | |
506 | if (ftdi->disconnected > 0) { | |
507 | ftdi_elan_put_kref(ftdi); | |
508 | return; | |
509 | } else { | |
510 | int retval = ftdi_elan_respond_engine(ftdi); | |
511 | if (retval == 0) { | |
512 | } else if (retval == -ESHUTDOWN) { | |
513 | ftdi->disconnected += 1; | |
514 | } else if (retval == -ENODEV) { | |
515 | ftdi->disconnected += 1; | |
516 | } else if (retval == -ENODEV) { | |
517 | ftdi->disconnected += 1; | |
518 | } else if (retval == -EILSEQ) { | |
519 | ftdi->disconnected += 1; | |
520 | } else { | |
521 | ftdi->disconnected += 1; | |
522 | dev_err(&ftdi->udev->dev, "respond error %d\n", retval); | |
523 | } | |
524 | if (ftdi->disconnected > 0) { | |
525 | ftdi_elan_abandon_completions(ftdi); | |
526 | ftdi_elan_abandon_targets(ftdi); | |
527 | } | |
528 | ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10)); | |
529 | return; | |
530 | } | |
531 | } | |
532 | ||
533 | ||
534 | /* | |
535 | * the sw_lock is initially held and will be freed | |
536 | * after the FTDI has been synchronized | |
537 | * | |
538 | */ | |
539 | static void ftdi_elan_status_work(void *data) | |
540 | { | |
541 | struct usb_ftdi *ftdi = data; | |
542 | int work_delay_in_msec = 0; | |
543 | if (ftdi->disconnected > 0) { | |
544 | ftdi_elan_put_kref(ftdi); | |
545 | return; | |
546 | } else if (ftdi->synchronized == 0) { | |
547 | down(&ftdi->sw_lock); | |
548 | if (ftdi_elan_synchronize(ftdi) == 0) { | |
549 | ftdi->synchronized = 1; | |
550 | ftdi_command_queue_work(ftdi, 1); | |
551 | ftdi_respond_queue_work(ftdi, 1); | |
552 | up(&ftdi->sw_lock); | |
553 | work_delay_in_msec = 100; | |
554 | } else { | |
555 | dev_err(&ftdi->udev->dev, "synchronize failed\n"); | |
556 | up(&ftdi->sw_lock); | |
557 | work_delay_in_msec = 10 *1000; | |
558 | } | |
559 | } else if (ftdi->stuck_status > 0) { | |
560 | if (ftdi_elan_stuck_waiting(ftdi) == 0) { | |
561 | ftdi->stuck_status = 0; | |
562 | ftdi->synchronized = 0; | |
563 | } else if ((ftdi->stuck_status++ % 60) == 1) { | |
564 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted " | |
565 | "- please remove\n"); | |
566 | } else | |
567 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted " | |
568 | "- checked %d times\n", ftdi->stuck_status); | |
569 | work_delay_in_msec = 100; | |
570 | } else if (ftdi->enumerated == 0) { | |
571 | if (ftdi_elan_enumeratePCI(ftdi) == 0) { | |
572 | ftdi->enumerated = 1; | |
573 | work_delay_in_msec = 250; | |
574 | } else | |
575 | work_delay_in_msec = 1000; | |
576 | } else if (ftdi->initialized == 0) { | |
577 | if (ftdi_elan_setupOHCI(ftdi) == 0) { | |
578 | ftdi->initialized = 1; | |
579 | work_delay_in_msec = 500; | |
580 | } else { | |
581 | dev_err(&ftdi->udev->dev, "initialized failed - trying " | |
582 | "again in 10 seconds\n"); | |
583 | work_delay_in_msec = 10 *1000; | |
584 | } | |
585 | } else if (ftdi->registered == 0) { | |
586 | work_delay_in_msec = 10; | |
587 | if (ftdi_elan_hcd_init(ftdi) == 0) { | |
588 | ftdi->registered = 1; | |
589 | } else | |
590 | dev_err(&ftdi->udev->dev, "register failed\n"); | |
591 | work_delay_in_msec = 250; | |
592 | } else { | |
593 | if (ftdi_elan_checkingPCI(ftdi) == 0) { | |
594 | work_delay_in_msec = 250; | |
595 | } else if (ftdi->controlreg & 0x00400000) { | |
596 | if (ftdi->gone_away > 0) { | |
597 | dev_err(&ftdi->udev->dev, "PCI device eject con" | |
598 | "firmed platform_dev.dev.parent=%p plat" | |
599 | "form_dev.dev=%p\n", | |
600 | ftdi->platform_dev.dev.parent, | |
601 | &ftdi->platform_dev.dev); | |
602 | platform_device_unregister(&ftdi->platform_dev); | |
603 | ftdi->platform_dev.dev.parent = NULL; | |
604 | ftdi->registered = 0; | |
605 | ftdi->enumerated = 0; | |
606 | ftdi->card_ejected = 0; | |
607 | ftdi->initialized = 0; | |
608 | ftdi->gone_away = 0; | |
609 | } else | |
610 | ftdi_elan_flush_targets(ftdi); | |
611 | work_delay_in_msec = 250; | |
612 | } else { | |
613 | dev_err(&ftdi->udev->dev, "PCI device has disappeared\n" | |
614 | ); | |
615 | ftdi_elan_cancel_targets(ftdi); | |
616 | work_delay_in_msec = 500; | |
617 | ftdi->enumerated = 0; | |
618 | ftdi->initialized = 0; | |
619 | } | |
620 | } | |
621 | if (ftdi->disconnected > 0) { | |
622 | ftdi_elan_put_kref(ftdi); | |
623 | return; | |
624 | } else { | |
625 | ftdi_status_requeue_work(ftdi, | |
626 | msecs_to_jiffies(work_delay_in_msec)); | |
627 | return; | |
628 | } | |
629 | } | |
630 | ||
631 | ||
632 | /* | |
633 | * file_operations for the jtag interface | |
634 | * | |
635 | * the usage count for the device is incremented on open() | |
636 | * and decremented on release() | |
637 | */ | |
638 | static int ftdi_elan_open(struct inode *inode, struct file *file) | |
639 | { | |
640 | int subminor = iminor(inode); | |
641 | struct usb_interface *interface = usb_find_interface(&ftdi_elan_driver, | |
642 | subminor); | |
643 | if (!interface) { | |
644 | printk(KERN_ERR "can't find device for minor %d\n", subminor); | |
645 | return -ENODEV; | |
646 | } else { | |
647 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); | |
648 | if (!ftdi) { | |
649 | return -ENODEV; | |
650 | } else { | |
651 | if (down_interruptible(&ftdi->sw_lock)) { | |
652 | return -EINTR; | |
653 | } else { | |
654 | ftdi_elan_get_kref(ftdi); | |
655 | file->private_data = ftdi; | |
656 | return 0; | |
657 | } | |
658 | } | |
659 | } | |
660 | } | |
661 | ||
662 | static int ftdi_elan_release(struct inode *inode, struct file *file) | |
663 | { | |
664 | struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data; | |
665 | if (ftdi == NULL) | |
666 | return -ENODEV; | |
667 | up(&ftdi->sw_lock); /* decrement the count on our device */ | |
668 | ftdi_elan_put_kref(ftdi); | |
669 | return 0; | |
670 | } | |
671 | ||
672 | ||
673 | #define FTDI_ELAN_IOC_MAGIC 0xA1 | |
674 | #define FTDI_ELAN_IOCDEBUG _IOC(_IOC_WRITE, FTDI_ELAN_IOC_MAGIC, 1, 132) | |
675 | static int ftdi_elan_ioctl(struct inode *inode, struct file *file, | |
676 | unsigned int cmd, unsigned long arg) | |
677 | { | |
678 | switch (cmd) { | |
679 | case FTDI_ELAN_IOCDEBUG:{ | |
680 | char line[132]; | |
681 | int size = strncpy_from_user(line, | |
682 | (const char __user *)arg, sizeof(line)); | |
683 | if (size < 0) { | |
684 | return -EINVAL; | |
685 | } else { | |
686 | printk(KERN_ERR "TODO: ioctl %s\n", line); | |
687 | return 0; | |
688 | } | |
689 | } | |
690 | default: | |
691 | return -EFAULT; | |
692 | } | |
693 | } | |
694 | ||
695 | ||
696 | /* | |
697 | * | |
698 | * blocking bulk reads are used to get data from the device | |
699 | * | |
700 | */ | |
701 | static ssize_t ftdi_elan_read(struct file *file, char __user *buffer, | |
702 | size_t count, loff_t *ppos) | |
703 | { | |
704 | char data[30 *3 + 4]; | |
705 | char *d = data; | |
706 | int m = (sizeof(data) - 1) / 3; | |
707 | int bytes_read = 0; | |
708 | int retry_on_empty = 10; | |
709 | int retry_on_timeout = 5; | |
710 | struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data; | |
711 | if (ftdi->disconnected > 0) { | |
712 | return -ENODEV; | |
713 | } | |
714 | data[0] = 0; | |
715 | have:if (ftdi->bulk_in_left > 0) { | |
716 | if (count-- > 0) { | |
717 | char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer; | |
718 | ftdi->bulk_in_left -= 1; | |
719 | if (bytes_read < m) { | |
720 | d += sprintf(d, " %02X", 0x000000FF & *p); | |
721 | } else if (bytes_read > m) { | |
722 | } else | |
723 | d += sprintf(d, " .."); | |
724 | if (copy_to_user(buffer++, p, 1)) { | |
725 | return -EFAULT; | |
726 | } else { | |
727 | bytes_read += 1; | |
728 | goto have; | |
729 | } | |
730 | } else | |
731 | return bytes_read; | |
732 | } | |
733 | more:if (count > 0) { | |
734 | int packet_bytes = 0; | |
735 | int retval = usb_bulk_msg(ftdi->udev, | |
736 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
737 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
738 | &packet_bytes, msecs_to_jiffies(50)); | |
739 | if (packet_bytes > 2) { | |
740 | ftdi->bulk_in_left = packet_bytes - 2; | |
741 | ftdi->bulk_in_last = 1; | |
742 | goto have; | |
743 | } else if (retval == -ETIMEDOUT) { | |
744 | if (retry_on_timeout-- > 0) { | |
745 | goto more; | |
746 | } else if (bytes_read > 0) { | |
747 | return bytes_read; | |
748 | } else | |
749 | return retval; | |
750 | } else if (retval == 0) { | |
751 | if (retry_on_empty-- > 0) { | |
752 | goto more; | |
753 | } else | |
754 | return bytes_read; | |
755 | } else | |
756 | return retval; | |
757 | } else | |
758 | return bytes_read; | |
759 | } | |
760 | ||
7d12e780 | 761 | static void ftdi_elan_write_bulk_callback(struct urb *urb) |
a5c66e4b TO |
762 | { |
763 | struct usb_ftdi *ftdi = (struct usb_ftdi *)urb->context; | |
764 | if (urb->status && !(urb->status == -ENOENT || urb->status == | |
765 | -ECONNRESET || urb->status == -ESHUTDOWN)) { | |
766 | dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %" | |
767 | "d\n", urb, urb->status); | |
768 | } | |
769 | usb_buffer_free(urb->dev, urb->transfer_buffer_length, | |
770 | urb->transfer_buffer, urb->transfer_dma); | |
771 | } | |
772 | ||
773 | static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi, | |
774 | char *buf, int command_size, int total_size) | |
775 | { | |
776 | int ed_commands = 0; | |
777 | int b = 0; | |
778 | int I = command_size; | |
779 | int i = ftdi->command_head; | |
780 | while (I-- > 0) { | |
781 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
782 | i++]; | |
783 | int F = command->follows; | |
784 | u8 *f = command->buffer; | |
785 | if (command->header & 0x80) { | |
786 | ed_commands |= 1 << (0x3 & (command->header >> 5)); | |
787 | } | |
788 | buf[b++] = command->header; | |
789 | buf[b++] = (command->length >> 0) & 0x00FF; | |
790 | buf[b++] = (command->length >> 8) & 0x00FF; | |
791 | buf[b++] = command->address; | |
792 | buf[b++] = command->width; | |
793 | while (F-- > 0) { | |
794 | buf[b++] = *f++; | |
795 | } | |
796 | } | |
797 | return ed_commands; | |
798 | } | |
799 | ||
800 | static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size) | |
801 | { | |
802 | int total_size = 0; | |
803 | int I = command_size; | |
804 | int i = ftdi->command_head; | |
805 | while (I-- > 0) { | |
806 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
807 | i++]; | |
808 | total_size += 5 + command->follows; | |
809 | } return total_size; | |
810 | } | |
811 | ||
812 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) | |
813 | { | |
814 | int retval; | |
815 | char *buf; | |
816 | int ed_commands; | |
817 | int total_size; | |
818 | struct urb *urb; | |
819 | int command_size = ftdi->command_next - ftdi->command_head; | |
820 | if (command_size == 0) | |
821 | return 0; | |
822 | total_size = ftdi_elan_total_command_size(ftdi, command_size); | |
823 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
824 | if (!urb) { | |
825 | dev_err(&ftdi->udev->dev, "could not get a urb to write %d comm" | |
826 | "ands totaling %d bytes to the Uxxx\n", command_size, | |
827 | total_size); | |
828 | return -ENOMEM; | |
829 | } | |
830 | buf = usb_buffer_alloc(ftdi->udev, total_size, GFP_KERNEL, | |
831 | &urb->transfer_dma); | |
832 | if (!buf) { | |
833 | dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c" | |
834 | "ommands totaling %d bytes to the Uxxx\n", command_size, | |
835 | total_size); | |
836 | usb_free_urb(urb); | |
837 | return -ENOMEM; | |
838 | } | |
839 | ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf, | |
840 | command_size, total_size); | |
841 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
842 | ftdi->bulk_out_endpointAddr), buf, total_size, | |
843 | ftdi_elan_write_bulk_callback, ftdi); | |
844 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
845 | if (ed_commands) { | |
846 | char diag[40 *3 + 4]; | |
847 | char *d = diag; | |
848 | int m = total_size; | |
849 | u8 *c = buf; | |
850 | int s = (sizeof(diag) - 1) / 3; | |
851 | diag[0] = 0; | |
852 | while (s-- > 0 && m-- > 0) { | |
853 | if (s > 0 || m == 0) { | |
854 | d += sprintf(d, " %02X", *c++); | |
855 | } else | |
856 | d += sprintf(d, " .."); | |
857 | } | |
858 | } | |
859 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
860 | if (retval) { | |
861 | dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write " | |
862 | "%d commands totaling %d bytes to the Uxxx\n", retval, | |
863 | urb, command_size, total_size); | |
864 | usb_buffer_free(ftdi->udev, total_size, buf, urb->transfer_dma); | |
865 | usb_free_urb(urb); | |
866 | return retval; | |
867 | } | |
868 | usb_free_urb(urb); /* release our reference to this urb, | |
869 | the USB core will eventually free it entirely */ | |
870 | ftdi->command_head += command_size; | |
871 | ftdi_elan_kick_respond_queue(ftdi); | |
872 | return 0; | |
873 | } | |
874 | ||
875 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
876 | struct u132_target *target, u8 *buffer, int length) | |
877 | { | |
878 | struct urb *urb = target->urb; | |
879 | int halted = target->halted; | |
880 | int skipped = target->skipped; | |
881 | int actual = target->actual; | |
882 | int non_null = target->non_null; | |
883 | int toggle_bits = target->toggle_bits; | |
884 | int error_count = target->error_count; | |
885 | int condition_code = target->condition_code; | |
886 | int repeat_number = target->repeat_number; | |
887 | void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int, | |
888 | int, int, int, int) = target->callback; | |
889 | target->active -= 1; | |
890 | target->callback = NULL; | |
891 | (*callback) (target->endp, urb, buffer, length, toggle_bits, | |
892 | error_count, condition_code, repeat_number, halted, skipped, | |
893 | actual, non_null); | |
894 | } | |
895 | ||
896 | static char *have_ed_set_response(struct usb_ftdi *ftdi, | |
897 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, | |
898 | char *b) | |
899 | { | |
900 | int payload = (ed_length >> 0) & 0x07FF; | |
901 | down(&ftdi->u132_lock); | |
902 | target->actual = 0; | |
903 | target->non_null = (ed_length >> 15) & 0x0001; | |
904 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
905 | if (ed_type == 0x02) { | |
906 | if (payload == 0 || target->abandoning > 0) { | |
907 | target->abandoning = 0; | |
908 | up(&ftdi->u132_lock); | |
909 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
910 | payload); | |
911 | ftdi->recieved = 0; | |
912 | ftdi->expected = 4; | |
913 | ftdi->ed_found = 0; | |
914 | return ftdi->response; | |
915 | } else { | |
916 | ftdi->expected = 4 + payload; | |
917 | ftdi->ed_found = 1; | |
918 | up(&ftdi->u132_lock); | |
919 | return b; | |
920 | } | |
921 | } else if (ed_type == 0x03) { | |
922 | if (payload == 0 || target->abandoning > 0) { | |
923 | target->abandoning = 0; | |
924 | up(&ftdi->u132_lock); | |
925 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
926 | payload); | |
927 | ftdi->recieved = 0; | |
928 | ftdi->expected = 4; | |
929 | ftdi->ed_found = 0; | |
930 | return ftdi->response; | |
931 | } else { | |
932 | ftdi->expected = 4 + payload; | |
933 | ftdi->ed_found = 1; | |
934 | up(&ftdi->u132_lock); | |
935 | return b; | |
936 | } | |
937 | } else if (ed_type == 0x01) { | |
938 | target->abandoning = 0; | |
939 | up(&ftdi->u132_lock); | |
940 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
941 | payload); | |
942 | ftdi->recieved = 0; | |
943 | ftdi->expected = 4; | |
944 | ftdi->ed_found = 0; | |
945 | return ftdi->response; | |
946 | } else { | |
947 | target->abandoning = 0; | |
948 | up(&ftdi->u132_lock); | |
949 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
950 | payload); | |
951 | ftdi->recieved = 0; | |
952 | ftdi->expected = 4; | |
953 | ftdi->ed_found = 0; | |
954 | return ftdi->response; | |
955 | } | |
956 | } | |
957 | ||
958 | static char *have_ed_get_response(struct usb_ftdi *ftdi, | |
959 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, | |
960 | char *b) | |
961 | { | |
962 | down(&ftdi->u132_lock); | |
963 | target->condition_code = TD_DEVNOTRESP; | |
964 | target->actual = (ed_length >> 0) & 0x01FF; | |
965 | target->non_null = (ed_length >> 15) & 0x0001; | |
966 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
967 | up(&ftdi->u132_lock); | |
968 | if (target->active) | |
969 | ftdi_elan_do_callback(ftdi, target, NULL, 0); | |
970 | target->abandoning = 0; | |
971 | ftdi->recieved = 0; | |
972 | ftdi->expected = 4; | |
973 | ftdi->ed_found = 0; | |
974 | return ftdi->response; | |
975 | } | |
976 | ||
977 | ||
978 | /* | |
979 | * The engine tries to empty the FTDI fifo | |
980 | * | |
981 | * all responses found in the fifo data are dispatched thus | |
982 | * the response buffer can only ever hold a maximum sized | |
983 | * response from the Uxxx. | |
984 | * | |
985 | */ | |
986 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi) | |
987 | { | |
988 | u8 *b = ftdi->response + ftdi->recieved; | |
989 | int bytes_read = 0; | |
990 | int retry_on_empty = 1; | |
991 | int retry_on_timeout = 3; | |
992 | int empty_packets = 0; | |
993 | read:{ | |
994 | int packet_bytes = 0; | |
995 | int retval = usb_bulk_msg(ftdi->udev, | |
996 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
997 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
998 | &packet_bytes, msecs_to_jiffies(500)); | |
999 | char diag[30 *3 + 4]; | |
1000 | char *d = diag; | |
1001 | int m = packet_bytes; | |
1002 | u8 *c = ftdi->bulk_in_buffer; | |
1003 | int s = (sizeof(diag) - 1) / 3; | |
1004 | diag[0] = 0; | |
1005 | while (s-- > 0 && m-- > 0) { | |
1006 | if (s > 0 || m == 0) { | |
1007 | d += sprintf(d, " %02X", *c++); | |
1008 | } else | |
1009 | d += sprintf(d, " .."); | |
1010 | } | |
1011 | if (packet_bytes > 2) { | |
1012 | ftdi->bulk_in_left = packet_bytes - 2; | |
1013 | ftdi->bulk_in_last = 1; | |
1014 | goto have; | |
1015 | } else if (retval == -ETIMEDOUT) { | |
1016 | if (retry_on_timeout-- > 0) { | |
1017 | dev_err(&ftdi->udev->dev, "TIMED OUT with packe" | |
1018 | "t_bytes = %d with total %d bytes%s\n", | |
1019 | packet_bytes, bytes_read, diag); | |
1020 | goto more; | |
1021 | } else if (bytes_read > 0) { | |
1022 | dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n", | |
1023 | bytes_read, diag); | |
1024 | return -ENOMEM; | |
1025 | } else { | |
1026 | dev_err(&ftdi->udev->dev, "TIMED OUT with packe" | |
1027 | "t_bytes = %d with total %d bytes%s\n", | |
1028 | packet_bytes, bytes_read, diag); | |
1029 | return -ENOMEM; | |
1030 | } | |
1031 | } else if (retval == -EILSEQ) { | |
1032 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes" | |
1033 | " = %d with total %d bytes%s\n", retval, | |
1034 | packet_bytes, bytes_read, diag); | |
1035 | return retval; | |
1036 | } else if (retval) { | |
1037 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes" | |
1038 | " = %d with total %d bytes%s\n", retval, | |
1039 | packet_bytes, bytes_read, diag); | |
1040 | return retval; | |
1041 | } else if (packet_bytes == 2) { | |
1042 | unsigned char s0 = ftdi->bulk_in_buffer[0]; | |
1043 | unsigned char s1 = ftdi->bulk_in_buffer[1]; | |
1044 | empty_packets += 1; | |
1045 | if (s0 == 0x31 && s1 == 0x60) { | |
1046 | if (retry_on_empty-- > 0) { | |
1047 | goto more; | |
1048 | } else | |
1049 | return 0; | |
1050 | } else if (s0 == 0x31 && s1 == 0x00) { | |
1051 | if (retry_on_empty-- > 0) { | |
1052 | goto more; | |
1053 | } else | |
1054 | return 0; | |
1055 | } else { | |
1056 | if (retry_on_empty-- > 0) { | |
1057 | goto more; | |
1058 | } else | |
1059 | return 0; | |
1060 | } | |
1061 | } else if (packet_bytes == 1) { | |
1062 | if (retry_on_empty-- > 0) { | |
1063 | goto more; | |
1064 | } else | |
1065 | return 0; | |
1066 | } else { | |
1067 | if (retry_on_empty-- > 0) { | |
1068 | goto more; | |
1069 | } else | |
1070 | return 0; | |
1071 | } | |
1072 | } | |
1073 | more:{ | |
1074 | goto read; | |
1075 | } | |
1076 | have:if (ftdi->bulk_in_left > 0) { | |
1077 | u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last]; | |
1078 | bytes_read += 1; | |
1079 | ftdi->bulk_in_left -= 1; | |
1080 | if (ftdi->recieved == 0 && c == 0xFF) { | |
1081 | goto have; | |
1082 | } else | |
1083 | *b++ = c; | |
1084 | if (++ftdi->recieved < ftdi->expected) { | |
1085 | goto have; | |
1086 | } else if (ftdi->ed_found) { | |
1087 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1088 | u16 ed_length = (ftdi->response[2] << 8) | | |
1089 | ftdi->response[1]; | |
1090 | struct u132_target *target = &ftdi->target[ed_number]; | |
1091 | int payload = (ed_length >> 0) & 0x07FF; | |
1092 | char diag[30 *3 + 4]; | |
1093 | char *d = diag; | |
1094 | int m = payload; | |
1095 | u8 *c = 4 + ftdi->response; | |
1096 | int s = (sizeof(diag) - 1) / 3; | |
1097 | diag[0] = 0; | |
1098 | while (s-- > 0 && m-- > 0) { | |
1099 | if (s > 0 || m == 0) { | |
1100 | d += sprintf(d, " %02X", *c++); | |
1101 | } else | |
1102 | d += sprintf(d, " .."); | |
1103 | } | |
1104 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
1105 | payload); | |
1106 | ftdi->recieved = 0; | |
1107 | ftdi->expected = 4; | |
1108 | ftdi->ed_found = 0; | |
1109 | b = ftdi->response; | |
1110 | goto have; | |
1111 | } else if (ftdi->expected == 8) { | |
1112 | u8 buscmd; | |
1113 | int respond_head = ftdi->respond_head++; | |
1114 | struct u132_respond *respond = &ftdi->respond[ | |
1115 | RESPOND_MASK & respond_head]; | |
1116 | u32 data = ftdi->response[7]; | |
1117 | data <<= 8; | |
1118 | data |= ftdi->response[6]; | |
1119 | data <<= 8; | |
1120 | data |= ftdi->response[5]; | |
1121 | data <<= 8; | |
1122 | data |= ftdi->response[4]; | |
1123 | *respond->value = data; | |
1124 | *respond->result = 0; | |
1125 | complete(&respond->wait_completion); | |
1126 | ftdi->recieved = 0; | |
1127 | ftdi->expected = 4; | |
1128 | ftdi->ed_found = 0; | |
1129 | b = ftdi->response; | |
1130 | buscmd = (ftdi->response[0] >> 0) & 0x0F; | |
1131 | if (buscmd == 0x00) { | |
1132 | } else if (buscmd == 0x02) { | |
1133 | } else if (buscmd == 0x06) { | |
1134 | } else if (buscmd == 0x0A) { | |
1135 | } else | |
1136 | dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) va" | |
1137 | "lue = %08X\n", buscmd, data); | |
1138 | goto have; | |
1139 | } else { | |
1140 | if ((ftdi->response[0] & 0x80) == 0x00) { | |
1141 | ftdi->expected = 8; | |
1142 | goto have; | |
1143 | } else { | |
1144 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1145 | int ed_type = (ftdi->response[0] >> 0) & 0x03; | |
1146 | u16 ed_length = (ftdi->response[2] << 8) | | |
1147 | ftdi->response[1]; | |
1148 | struct u132_target *target = &ftdi->target[ | |
1149 | ed_number]; | |
1150 | target->halted = (ftdi->response[0] >> 3) & | |
1151 | 0x01; | |
1152 | target->skipped = (ftdi->response[0] >> 2) & | |
1153 | 0x01; | |
1154 | target->toggle_bits = (ftdi->response[3] >> 6) | |
1155 | & 0x03; | |
1156 | target->error_count = (ftdi->response[3] >> 4) | |
1157 | & 0x03; | |
1158 | target->condition_code = (ftdi->response[ | |
1159 | 3] >> 0) & 0x0F; | |
1160 | if ((ftdi->response[0] & 0x10) == 0x00) { | |
1161 | b = have_ed_set_response(ftdi, target, | |
1162 | ed_length, ed_number, ed_type, | |
1163 | b); | |
1164 | goto have; | |
1165 | } else { | |
1166 | b = have_ed_get_response(ftdi, target, | |
1167 | ed_length, ed_number, ed_type, | |
1168 | b); | |
1169 | goto have; | |
1170 | } | |
1171 | } | |
1172 | } | |
1173 | } else | |
1174 | goto more; | |
1175 | } | |
1176 | ||
1177 | ||
1178 | /* | |
1179 | * create a urb, and a buffer for it, and copy the data to the urb | |
1180 | * | |
1181 | */ | |
1182 | static ssize_t ftdi_elan_write(struct file *file, | |
1183 | const char __user *user_buffer, size_t count, | |
1184 | loff_t *ppos) | |
1185 | { | |
1186 | int retval = 0; | |
1187 | struct urb *urb; | |
1188 | char *buf; | |
1189 | char data[30 *3 + 4]; | |
1190 | char *d = data; | |
1191 | const char __user *s = user_buffer; | |
1192 | int m = (sizeof(data) - 1) / 3; | |
1193 | struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data; | |
1194 | if (ftdi->disconnected > 0) { | |
1195 | return -ENODEV; | |
1196 | } | |
1197 | if (count == 0) { | |
1198 | goto exit; | |
1199 | } | |
1200 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1201 | if (!urb) { | |
1202 | retval = -ENOMEM; | |
1203 | goto error_1; | |
1204 | } | |
1205 | buf = usb_buffer_alloc(ftdi->udev, count, GFP_KERNEL, | |
1206 | &urb->transfer_dma); | |
1207 | if (!buf) { | |
1208 | retval = -ENOMEM; | |
1209 | goto error_2; | |
1210 | } | |
1211 | if (copy_from_user(buf, user_buffer, count)) { | |
1212 | retval = -EFAULT; | |
1213 | goto error_3; | |
1214 | } | |
1215 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
1216 | ftdi->bulk_out_endpointAddr), buf, count, | |
1217 | ftdi_elan_write_bulk_callback, ftdi); | |
1218 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1219 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1220 | if (retval) { | |
1221 | dev_err(&ftdi->udev->dev, "failed submitting write urb, error %" | |
1222 | "d\n", retval); | |
1223 | goto error_4; | |
1224 | } | |
1225 | usb_free_urb(urb); | |
1226 | exit:; | |
1227 | if (count > m) { | |
1228 | int I = m - 1; | |
1229 | while (I-- > 0) { | |
1230 | d += sprintf(d, " %02X", 0x000000FF & *s++); | |
1231 | } | |
1232 | d += sprintf(d, " .."); | |
1233 | } else { | |
1234 | int I = count; | |
1235 | while (I-- > 0) { | |
1236 | d += sprintf(d, " %02X", 0x000000FF & *s++); | |
1237 | } | |
1238 | } | |
1239 | return count; | |
1240 | error_4: error_3:usb_buffer_free(ftdi->udev, count, buf, | |
1241 | urb->transfer_dma); | |
1242 | error_2:usb_free_urb(urb); | |
1243 | error_1:return retval; | |
1244 | } | |
1245 | ||
1246 | static struct file_operations ftdi_elan_fops = { | |
1247 | .owner = THIS_MODULE, | |
1248 | .llseek = no_llseek, | |
1249 | .ioctl = ftdi_elan_ioctl, | |
1250 | .read = ftdi_elan_read, | |
1251 | .write = ftdi_elan_write, | |
1252 | .open = ftdi_elan_open, | |
1253 | .release = ftdi_elan_release, | |
1254 | }; | |
1255 | ||
1256 | /* | |
1257 | * usb class driver info in order to get a minor number from the usb core, | |
1258 | * and to have the device registered with the driver core | |
1259 | */ | |
1260 | static struct usb_class_driver ftdi_elan_jtag_class = { | |
1261 | .name = "ftdi-%d-jtag", | |
1262 | .fops = &ftdi_elan_fops, | |
1263 | .minor_base = USB_FTDI_ELAN_MINOR_BASE, | |
1264 | }; | |
1265 | ||
1266 | /* | |
1267 | * the following definitions are for the | |
1268 | * ELAN FPGA state machgine processor that | |
1269 | * lies on the other side of the FTDI chip | |
1270 | */ | |
1271 | #define cPCIu132rd 0x0 | |
1272 | #define cPCIu132wr 0x1 | |
1273 | #define cPCIiord 0x2 | |
1274 | #define cPCIiowr 0x3 | |
1275 | #define cPCImemrd 0x6 | |
1276 | #define cPCImemwr 0x7 | |
1277 | #define cPCIcfgrd 0xA | |
1278 | #define cPCIcfgwr 0xB | |
1279 | #define cPCInull 0xF | |
1280 | #define cU132cmd_status 0x0 | |
1281 | #define cU132flash 0x1 | |
1282 | #define cPIDsetup 0x0 | |
1283 | #define cPIDout 0x1 | |
1284 | #define cPIDin 0x2 | |
1285 | #define cPIDinonce 0x3 | |
1286 | #define cCCnoerror 0x0 | |
1287 | #define cCCcrc 0x1 | |
1288 | #define cCCbitstuff 0x2 | |
1289 | #define cCCtoggle 0x3 | |
1290 | #define cCCstall 0x4 | |
1291 | #define cCCnoresp 0x5 | |
1292 | #define cCCbadpid1 0x6 | |
1293 | #define cCCbadpid2 0x7 | |
1294 | #define cCCdataoverrun 0x8 | |
1295 | #define cCCdataunderrun 0x9 | |
1296 | #define cCCbuffoverrun 0xC | |
1297 | #define cCCbuffunderrun 0xD | |
1298 | #define cCCnotaccessed 0xF | |
1299 | static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data) | |
1300 | { | |
1301 | wait:if (ftdi->disconnected > 0) { | |
1302 | return -ENODEV; | |
1303 | } else { | |
1304 | int command_size; | |
1305 | down(&ftdi->u132_lock); | |
1306 | command_size = ftdi->command_next - ftdi->command_head; | |
1307 | if (command_size < COMMAND_SIZE) { | |
1308 | struct u132_command *command = &ftdi->command[ | |
1309 | COMMAND_MASK & ftdi->command_next]; | |
1310 | command->header = 0x00 | cPCIu132wr; | |
1311 | command->length = 0x04; | |
1312 | command->address = 0x00; | |
1313 | command->width = 0x00; | |
1314 | command->follows = 4; | |
1315 | command->value = data; | |
1316 | command->buffer = &command->value; | |
1317 | ftdi->command_next += 1; | |
1318 | ftdi_elan_kick_command_queue(ftdi); | |
1319 | up(&ftdi->u132_lock); | |
1320 | return 0; | |
1321 | } else { | |
1322 | up(&ftdi->u132_lock); | |
1323 | msleep(100); | |
1324 | goto wait; | |
1325 | } | |
1326 | } | |
1327 | } | |
1328 | ||
1329 | static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset, | |
1330 | u8 width, u32 data) | |
1331 | { | |
1332 | u8 addressofs = config_offset / 4; | |
1333 | wait:if (ftdi->disconnected > 0) { | |
1334 | return -ENODEV; | |
1335 | } else { | |
1336 | int command_size; | |
1337 | down(&ftdi->u132_lock); | |
1338 | command_size = ftdi->command_next - ftdi->command_head; | |
1339 | if (command_size < COMMAND_SIZE) { | |
1340 | struct u132_command *command = &ftdi->command[ | |
1341 | COMMAND_MASK & ftdi->command_next]; | |
1342 | command->header = 0x00 | (cPCIcfgwr & 0x0F); | |
1343 | command->length = 0x04; | |
1344 | command->address = addressofs; | |
1345 | command->width = 0x00 | (width & 0x0F); | |
1346 | command->follows = 4; | |
1347 | command->value = data; | |
1348 | command->buffer = &command->value; | |
1349 | ftdi->command_next += 1; | |
1350 | ftdi_elan_kick_command_queue(ftdi); | |
1351 | up(&ftdi->u132_lock); | |
1352 | return 0; | |
1353 | } else { | |
1354 | up(&ftdi->u132_lock); | |
1355 | msleep(100); | |
1356 | goto wait; | |
1357 | } | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
1362 | u8 width, u32 data) | |
1363 | { | |
1364 | u8 addressofs = mem_offset / 4; | |
1365 | wait:if (ftdi->disconnected > 0) { | |
1366 | return -ENODEV; | |
1367 | } else { | |
1368 | int command_size; | |
1369 | down(&ftdi->u132_lock); | |
1370 | command_size = ftdi->command_next - ftdi->command_head; | |
1371 | if (command_size < COMMAND_SIZE) { | |
1372 | struct u132_command *command = &ftdi->command[ | |
1373 | COMMAND_MASK & ftdi->command_next]; | |
1374 | command->header = 0x00 | (cPCImemwr & 0x0F); | |
1375 | command->length = 0x04; | |
1376 | command->address = addressofs; | |
1377 | command->width = 0x00 | (width & 0x0F); | |
1378 | command->follows = 4; | |
1379 | command->value = data; | |
1380 | command->buffer = &command->value; | |
1381 | ftdi->command_next += 1; | |
1382 | ftdi_elan_kick_command_queue(ftdi); | |
1383 | up(&ftdi->u132_lock); | |
1384 | return 0; | |
1385 | } else { | |
1386 | up(&ftdi->u132_lock); | |
1387 | msleep(100); | |
1388 | goto wait; | |
1389 | } | |
1390 | } | |
1391 | } | |
1392 | ||
1393 | int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset, | |
1394 | u8 width, u32 data) | |
1395 | { | |
1396 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1397 | return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data); | |
1398 | } | |
1399 | ||
1400 | ||
1401 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem); | |
1402 | static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data) | |
1403 | { | |
1404 | wait:if (ftdi->disconnected > 0) { | |
1405 | return -ENODEV; | |
1406 | } else { | |
1407 | int command_size; | |
1408 | int respond_size; | |
1409 | down(&ftdi->u132_lock); | |
1410 | command_size = ftdi->command_next - ftdi->command_head; | |
1411 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1412 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1413 | { | |
1414 | struct u132_command *command = &ftdi->command[ | |
1415 | COMMAND_MASK & ftdi->command_next]; | |
1416 | struct u132_respond *respond = &ftdi->respond[ | |
1417 | RESPOND_MASK & ftdi->respond_next]; | |
1418 | int result = -ENODEV; | |
1419 | respond->result = &result; | |
1420 | respond->header = command->header = 0x00 | cPCIu132rd; | |
1421 | command->length = 0x04; | |
1422 | respond->address = command->address = cU132cmd_status; | |
1423 | command->width = 0x00; | |
1424 | command->follows = 0; | |
1425 | command->value = 0; | |
1426 | command->buffer = NULL; | |
1427 | respond->value = data; | |
1428 | init_completion(&respond->wait_completion); | |
1429 | ftdi->command_next += 1; | |
1430 | ftdi->respond_next += 1; | |
1431 | ftdi_elan_kick_command_queue(ftdi); | |
1432 | up(&ftdi->u132_lock); | |
1433 | wait_for_completion(&respond->wait_completion); | |
1434 | return result; | |
1435 | } else { | |
1436 | up(&ftdi->u132_lock); | |
1437 | msleep(100); | |
1438 | goto wait; | |
1439 | } | |
1440 | } | |
1441 | } | |
1442 | ||
1443 | int usb_ftdi_elan_read_reg(struct platform_device *pdev, u32 *data) | |
1444 | { | |
1445 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1446 | return ftdi_elan_read_reg(ftdi, data); | |
1447 | } | |
1448 | ||
1449 | ||
1450 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_reg); | |
1451 | static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset, | |
1452 | u8 width, u32 *data) | |
1453 | { | |
1454 | u8 addressofs = config_offset / 4; | |
1455 | wait:if (ftdi->disconnected > 0) { | |
1456 | return -ENODEV; | |
1457 | } else { | |
1458 | int command_size; | |
1459 | int respond_size; | |
1460 | down(&ftdi->u132_lock); | |
1461 | command_size = ftdi->command_next - ftdi->command_head; | |
1462 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1463 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1464 | { | |
1465 | struct u132_command *command = &ftdi->command[ | |
1466 | COMMAND_MASK & ftdi->command_next]; | |
1467 | struct u132_respond *respond = &ftdi->respond[ | |
1468 | RESPOND_MASK & ftdi->respond_next]; | |
1469 | int result = -ENODEV; | |
1470 | respond->result = &result; | |
1471 | respond->header = command->header = 0x00 | (cPCIcfgrd & | |
1472 | 0x0F); | |
1473 | command->length = 0x04; | |
1474 | respond->address = command->address = addressofs; | |
1475 | command->width = 0x00 | (width & 0x0F); | |
1476 | command->follows = 0; | |
1477 | command->value = 0; | |
1478 | command->buffer = NULL; | |
1479 | respond->value = data; | |
1480 | init_completion(&respond->wait_completion); | |
1481 | ftdi->command_next += 1; | |
1482 | ftdi->respond_next += 1; | |
1483 | ftdi_elan_kick_command_queue(ftdi); | |
1484 | up(&ftdi->u132_lock); | |
1485 | wait_for_completion(&respond->wait_completion); | |
1486 | return result; | |
1487 | } else { | |
1488 | up(&ftdi->u132_lock); | |
1489 | msleep(100); | |
1490 | goto wait; | |
1491 | } | |
1492 | } | |
1493 | } | |
1494 | ||
1495 | static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
1496 | u8 width, u32 *data) | |
1497 | { | |
1498 | u8 addressofs = mem_offset / 4; | |
1499 | wait:if (ftdi->disconnected > 0) { | |
1500 | return -ENODEV; | |
1501 | } else { | |
1502 | int command_size; | |
1503 | int respond_size; | |
1504 | down(&ftdi->u132_lock); | |
1505 | command_size = ftdi->command_next - ftdi->command_head; | |
1506 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1507 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1508 | { | |
1509 | struct u132_command *command = &ftdi->command[ | |
1510 | COMMAND_MASK & ftdi->command_next]; | |
1511 | struct u132_respond *respond = &ftdi->respond[ | |
1512 | RESPOND_MASK & ftdi->respond_next]; | |
1513 | int result = -ENODEV; | |
1514 | respond->result = &result; | |
1515 | respond->header = command->header = 0x00 | (cPCImemrd & | |
1516 | 0x0F); | |
1517 | command->length = 0x04; | |
1518 | respond->address = command->address = addressofs; | |
1519 | command->width = 0x00 | (width & 0x0F); | |
1520 | command->follows = 0; | |
1521 | command->value = 0; | |
1522 | command->buffer = NULL; | |
1523 | respond->value = data; | |
1524 | init_completion(&respond->wait_completion); | |
1525 | ftdi->command_next += 1; | |
1526 | ftdi->respond_next += 1; | |
1527 | ftdi_elan_kick_command_queue(ftdi); | |
1528 | up(&ftdi->u132_lock); | |
1529 | wait_for_completion(&respond->wait_completion); | |
1530 | return result; | |
1531 | } else { | |
1532 | up(&ftdi->u132_lock); | |
1533 | msleep(100); | |
1534 | goto wait; | |
1535 | } | |
1536 | } | |
1537 | } | |
1538 | ||
1539 | int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset, | |
1540 | u8 width, u32 *data) | |
1541 | { | |
1542 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1543 | if (ftdi->initialized == 0) { | |
1544 | return -ENODEV; | |
1545 | } else | |
1546 | return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data); | |
1547 | } | |
1548 | ||
1549 | ||
1550 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem); | |
1551 | static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number, | |
1552 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1553 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1554 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1555 | int halted, int skipped, int actual, int non_null)) | |
1556 | { | |
1557 | u8 ed = ed_number - 1; | |
1558 | wait:if (ftdi->disconnected > 0) { | |
1559 | return -ENODEV; | |
1560 | } else if (ftdi->initialized == 0) { | |
1561 | return -ENODEV; | |
1562 | } else { | |
1563 | int command_size; | |
1564 | down(&ftdi->u132_lock); | |
1565 | command_size = ftdi->command_next - ftdi->command_head; | |
1566 | if (command_size < COMMAND_SIZE) { | |
1567 | struct u132_target *target = &ftdi->target[ed]; | |
1568 | struct u132_command *command = &ftdi->command[ | |
1569 | COMMAND_MASK & ftdi->command_next]; | |
1570 | command->header = 0x80 | (ed << 5); | |
1571 | command->length = 0x8007; | |
1572 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1573 | | (address << 0); | |
1574 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1575 | usb_pipeout(urb->pipe)); | |
1576 | command->follows = 8; | |
1577 | command->value = 0; | |
1578 | command->buffer = urb->setup_packet; | |
1579 | target->callback = callback; | |
1580 | target->endp = endp; | |
1581 | target->urb = urb; | |
1582 | target->active = 1; | |
1583 | ftdi->command_next += 1; | |
1584 | ftdi_elan_kick_command_queue(ftdi); | |
1585 | up(&ftdi->u132_lock); | |
1586 | return 0; | |
1587 | } else { | |
1588 | up(&ftdi->u132_lock); | |
1589 | msleep(100); | |
1590 | goto wait; | |
1591 | } | |
1592 | } | |
1593 | } | |
1594 | ||
1595 | int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number, | |
1596 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1597 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1598 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1599 | int halted, int skipped, int actual, int non_null)) | |
1600 | { | |
1601 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1602 | return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address, | |
1603 | ep_number, toggle_bits, callback); | |
1604 | } | |
1605 | ||
1606 | ||
1607 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup); | |
1608 | static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number, | |
1609 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1610 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1611 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1612 | int halted, int skipped, int actual, int non_null)) | |
1613 | { | |
1614 | u8 ed = ed_number - 1; | |
1615 | wait:if (ftdi->disconnected > 0) { | |
1616 | return -ENODEV; | |
1617 | } else if (ftdi->initialized == 0) { | |
1618 | return -ENODEV; | |
1619 | } else { | |
1620 | int command_size; | |
1621 | down(&ftdi->u132_lock); | |
1622 | command_size = ftdi->command_next - ftdi->command_head; | |
1623 | if (command_size < COMMAND_SIZE) { | |
1624 | struct u132_target *target = &ftdi->target[ed]; | |
1625 | struct u132_command *command = &ftdi->command[ | |
1626 | COMMAND_MASK & ftdi->command_next]; | |
1627 | int remaining_length = urb->transfer_buffer_length - | |
1628 | urb->actual_length; | |
1629 | command->header = 0x82 | (ed << 5); | |
1630 | if (remaining_length == 0) { | |
1631 | command->length = 0x0000; | |
1632 | } else if (remaining_length > 1024) { | |
1633 | command->length = 0x8000 | 1023; | |
1634 | } else | |
1635 | command->length = 0x8000 | (remaining_length - | |
1636 | 1); | |
1637 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1638 | | (address << 0); | |
1639 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1640 | usb_pipeout(urb->pipe)); | |
1641 | command->follows = 0; | |
1642 | command->value = 0; | |
1643 | command->buffer = NULL; | |
1644 | target->callback = callback; | |
1645 | target->endp = endp; | |
1646 | target->urb = urb; | |
1647 | target->active = 1; | |
1648 | ftdi->command_next += 1; | |
1649 | ftdi_elan_kick_command_queue(ftdi); | |
1650 | up(&ftdi->u132_lock); | |
1651 | return 0; | |
1652 | } else { | |
1653 | up(&ftdi->u132_lock); | |
1654 | msleep(100); | |
1655 | goto wait; | |
1656 | } | |
1657 | } | |
1658 | } | |
1659 | ||
1660 | int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number, | |
1661 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1662 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1663 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1664 | int halted, int skipped, int actual, int non_null)) | |
1665 | { | |
1666 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1667 | return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address, | |
1668 | ep_number, toggle_bits, callback); | |
1669 | } | |
1670 | ||
1671 | ||
1672 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input); | |
1673 | static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number, | |
1674 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1675 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1676 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1677 | int halted, int skipped, int actual, int non_null)) | |
1678 | { | |
1679 | u8 ed = ed_number - 1; | |
1680 | wait:if (ftdi->disconnected > 0) { | |
1681 | return -ENODEV; | |
1682 | } else if (ftdi->initialized == 0) { | |
1683 | return -ENODEV; | |
1684 | } else { | |
1685 | int command_size; | |
1686 | down(&ftdi->u132_lock); | |
1687 | command_size = ftdi->command_next - ftdi->command_head; | |
1688 | if (command_size < COMMAND_SIZE) { | |
1689 | struct u132_target *target = &ftdi->target[ed]; | |
1690 | struct u132_command *command = &ftdi->command[ | |
1691 | COMMAND_MASK & ftdi->command_next]; | |
1692 | command->header = 0x81 | (ed << 5); | |
1693 | command->length = 0x0000; | |
1694 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1695 | | (address << 0); | |
1696 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1697 | usb_pipeout(urb->pipe)); | |
1698 | command->follows = 0; | |
1699 | command->value = 0; | |
1700 | command->buffer = NULL; | |
1701 | target->callback = callback; | |
1702 | target->endp = endp; | |
1703 | target->urb = urb; | |
1704 | target->active = 1; | |
1705 | ftdi->command_next += 1; | |
1706 | ftdi_elan_kick_command_queue(ftdi); | |
1707 | up(&ftdi->u132_lock); | |
1708 | return 0; | |
1709 | } else { | |
1710 | up(&ftdi->u132_lock); | |
1711 | msleep(100); | |
1712 | goto wait; | |
1713 | } | |
1714 | } | |
1715 | } | |
1716 | ||
1717 | int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number, | |
1718 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1719 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1720 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1721 | int halted, int skipped, int actual, int non_null)) | |
1722 | { | |
1723 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1724 | return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address, | |
1725 | ep_number, toggle_bits, callback); | |
1726 | } | |
1727 | ||
1728 | ||
1729 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty); | |
1730 | static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number, | |
1731 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1732 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1733 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1734 | int halted, int skipped, int actual, int non_null)) | |
1735 | { | |
1736 | u8 ed = ed_number - 1; | |
1737 | wait:if (ftdi->disconnected > 0) { | |
1738 | return -ENODEV; | |
1739 | } else if (ftdi->initialized == 0) { | |
1740 | return -ENODEV; | |
1741 | } else { | |
1742 | int command_size; | |
1743 | down(&ftdi->u132_lock); | |
1744 | command_size = ftdi->command_next - ftdi->command_head; | |
1745 | if (command_size < COMMAND_SIZE) { | |
1746 | u8 *b; | |
1747 | u16 urb_size; | |
1748 | int i = 0; | |
1749 | char data[30 *3 + 4]; | |
1750 | char *d = data; | |
1751 | int m = (sizeof(data) - 1) / 3; | |
1752 | int l = 0; | |
1753 | struct u132_target *target = &ftdi->target[ed]; | |
1754 | struct u132_command *command = &ftdi->command[ | |
1755 | COMMAND_MASK & ftdi->command_next]; | |
1756 | command->header = 0x81 | (ed << 5); | |
1757 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1758 | | (address << 0); | |
1759 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1760 | usb_pipeout(urb->pipe)); | |
1761 | command->follows = min(1024, | |
1762 | urb->transfer_buffer_length - | |
1763 | urb->actual_length); | |
1764 | command->value = 0; | |
1765 | command->buffer = urb->transfer_buffer + | |
1766 | urb->actual_length; | |
1767 | command->length = 0x8000 | (command->follows - 1); | |
1768 | b = command->buffer; | |
1769 | urb_size = command->follows; | |
1770 | data[0] = 0; | |
1771 | while (urb_size-- > 0) { | |
1772 | if (i > m) { | |
1773 | } else if (i++ < m) { | |
1774 | int w = sprintf(d, " %02X", *b++); | |
1775 | d += w; | |
1776 | l += w; | |
1777 | } else | |
1778 | d += sprintf(d, " .."); | |
1779 | } | |
1780 | target->callback = callback; | |
1781 | target->endp = endp; | |
1782 | target->urb = urb; | |
1783 | target->active = 1; | |
1784 | ftdi->command_next += 1; | |
1785 | ftdi_elan_kick_command_queue(ftdi); | |
1786 | up(&ftdi->u132_lock); | |
1787 | return 0; | |
1788 | } else { | |
1789 | up(&ftdi->u132_lock); | |
1790 | msleep(100); | |
1791 | goto wait; | |
1792 | } | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number, | |
1797 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1798 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1799 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1800 | int halted, int skipped, int actual, int non_null)) | |
1801 | { | |
1802 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1803 | return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address, | |
1804 | ep_number, toggle_bits, callback); | |
1805 | } | |
1806 | ||
1807 | ||
1808 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output); | |
1809 | static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number, | |
1810 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1811 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1812 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1813 | int halted, int skipped, int actual, int non_null)) | |
1814 | { | |
1815 | u8 ed = ed_number - 1; | |
1816 | wait:if (ftdi->disconnected > 0) { | |
1817 | return -ENODEV; | |
1818 | } else if (ftdi->initialized == 0) { | |
1819 | return -ENODEV; | |
1820 | } else { | |
1821 | int command_size; | |
1822 | down(&ftdi->u132_lock); | |
1823 | command_size = ftdi->command_next - ftdi->command_head; | |
1824 | if (command_size < COMMAND_SIZE) { | |
1825 | int remaining_length = urb->transfer_buffer_length - | |
1826 | urb->actual_length; | |
1827 | struct u132_target *target = &ftdi->target[ed]; | |
1828 | struct u132_command *command = &ftdi->command[ | |
1829 | COMMAND_MASK & ftdi->command_next]; | |
1830 | command->header = 0x83 | (ed << 5); | |
1831 | if (remaining_length == 0) { | |
1832 | command->length = 0x0000; | |
1833 | } else if (remaining_length > 1024) { | |
1834 | command->length = 0x8000 | 1023; | |
1835 | } else | |
1836 | command->length = 0x8000 | (remaining_length - | |
1837 | 1); | |
1838 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1839 | | (address << 0); | |
1840 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1841 | usb_pipeout(urb->pipe)); | |
1842 | command->follows = 0; | |
1843 | command->value = 0; | |
1844 | command->buffer = NULL; | |
1845 | target->callback = callback; | |
1846 | target->endp = endp; | |
1847 | target->urb = urb; | |
1848 | target->active = 1; | |
1849 | ftdi->command_next += 1; | |
1850 | ftdi_elan_kick_command_queue(ftdi); | |
1851 | up(&ftdi->u132_lock); | |
1852 | return 0; | |
1853 | } else { | |
1854 | up(&ftdi->u132_lock); | |
1855 | msleep(100); | |
1856 | goto wait; | |
1857 | } | |
1858 | } | |
1859 | } | |
1860 | ||
1861 | int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number, | |
1862 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1863 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1864 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1865 | int halted, int skipped, int actual, int non_null)) | |
1866 | { | |
1867 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1868 | return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address, | |
1869 | ep_number, toggle_bits, callback); | |
1870 | } | |
1871 | ||
1872 | ||
1873 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single); | |
1874 | static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number, | |
1875 | void *endp) | |
1876 | { | |
1877 | u8 ed = ed_number - 1; | |
1878 | if (ftdi->disconnected > 0) { | |
1879 | return -ENODEV; | |
1880 | } else if (ftdi->initialized == 0) { | |
1881 | return -ENODEV; | |
1882 | } else { | |
1883 | struct u132_target *target = &ftdi->target[ed]; | |
1884 | down(&ftdi->u132_lock); | |
1885 | if (target->abandoning > 0) { | |
1886 | up(&ftdi->u132_lock); | |
1887 | return 0; | |
1888 | } else { | |
1889 | target->abandoning = 1; | |
1890 | wait_1:if (target->active == 1) { | |
1891 | int command_size = ftdi->command_next - | |
1892 | ftdi->command_head; | |
1893 | if (command_size < COMMAND_SIZE) { | |
1894 | struct u132_command *command = | |
1895 | &ftdi->command[COMMAND_MASK & | |
1896 | ftdi->command_next]; | |
1897 | command->header = 0x80 | (ed << 5) | | |
1898 | 0x4; | |
1899 | command->length = 0x00; | |
1900 | command->address = 0x00; | |
1901 | command->width = 0x00; | |
1902 | command->follows = 0; | |
1903 | command->value = 0; | |
1904 | command->buffer = &command->value; | |
1905 | ftdi->command_next += 1; | |
1906 | ftdi_elan_kick_command_queue(ftdi); | |
1907 | } else { | |
1908 | up(&ftdi->u132_lock); | |
1909 | msleep(100); | |
1910 | down(&ftdi->u132_lock); | |
1911 | goto wait_1; | |
1912 | } | |
1913 | } | |
1914 | up(&ftdi->u132_lock); | |
1915 | return 0; | |
1916 | } | |
1917 | } | |
1918 | } | |
1919 | ||
1920 | int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number, | |
1921 | void *endp) | |
1922 | { | |
1923 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1924 | return ftdi_elan_edset_flush(ftdi, ed_number, endp); | |
1925 | } | |
1926 | ||
1927 | ||
1928 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush); | |
1929 | static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi) | |
1930 | { | |
1931 | int retry_on_empty = 10; | |
1932 | int retry_on_timeout = 5; | |
1933 | int retry_on_status = 20; | |
1934 | more:{ | |
1935 | int packet_bytes = 0; | |
1936 | int retval = usb_bulk_msg(ftdi->udev, | |
1937 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
1938 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
1939 | &packet_bytes, msecs_to_jiffies(100)); | |
1940 | if (packet_bytes > 2) { | |
1941 | char diag[30 *3 + 4]; | |
1942 | char *d = diag; | |
1943 | int m = (sizeof(diag) - 1) / 3; | |
1944 | char *b = ftdi->bulk_in_buffer; | |
1945 | int bytes_read = 0; | |
1946 | diag[0] = 0; | |
1947 | while (packet_bytes-- > 0) { | |
1948 | char c = *b++; | |
1949 | if (bytes_read < m) { | |
1950 | d += sprintf(d, " %02X", | |
1951 | 0x000000FF & c); | |
1952 | } else if (bytes_read > m) { | |
1953 | } else | |
1954 | d += sprintf(d, " .."); | |
1955 | bytes_read += 1; | |
1956 | continue; | |
1957 | } | |
1958 | goto more; | |
1959 | } else if (packet_bytes > 1) { | |
1960 | char s1 = ftdi->bulk_in_buffer[0]; | |
1961 | char s2 = ftdi->bulk_in_buffer[1]; | |
1962 | if (s1 == 0x31 && s2 == 0x60) { | |
1963 | return 0; | |
1964 | } else if (retry_on_status-- > 0) { | |
1965 | goto more; | |
1966 | } else { | |
1967 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
1968 | "imit reached\n"); | |
1969 | return -EFAULT; | |
1970 | } | |
1971 | } else if (packet_bytes > 0) { | |
1972 | char b1 = ftdi->bulk_in_buffer[0]; | |
1973 | dev_err(&ftdi->udev->dev, "only one byte flushed from F" | |
1974 | "TDI = %02X\n", b1); | |
1975 | if (retry_on_status-- > 0) { | |
1976 | goto more; | |
1977 | } else { | |
1978 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
1979 | "imit reached\n"); | |
1980 | return -EFAULT; | |
1981 | } | |
1982 | } else if (retval == -ETIMEDOUT) { | |
1983 | if (retry_on_timeout-- > 0) { | |
1984 | goto more; | |
1985 | } else { | |
1986 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limi" | |
1987 | "t reached\n"); | |
1988 | return -ENOMEM; | |
1989 | } | |
1990 | } else if (retval == 0) { | |
1991 | if (retry_on_empty-- > 0) { | |
1992 | goto more; | |
1993 | } else { | |
1994 | dev_err(&ftdi->udev->dev, "empty packet retry l" | |
1995 | "imit reached\n"); | |
1996 | return -ENOMEM; | |
1997 | } | |
1998 | } else { | |
1999 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
2000 | return retval; | |
2001 | } | |
2002 | } | |
2003 | return -1; | |
2004 | } | |
2005 | ||
2006 | ||
2007 | /* | |
2008 | * send the long flush sequence | |
2009 | * | |
2010 | */ | |
2011 | static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) | |
2012 | { | |
2013 | int retval; | |
2014 | struct urb *urb; | |
2015 | char *buf; | |
2016 | int I = 257; | |
2017 | int i = 0; | |
2018 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
2019 | if (!urb) { | |
2020 | dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequ" | |
2021 | "ence\n"); | |
2022 | return -ENOMEM; | |
2023 | } | |
2024 | buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); | |
2025 | if (!buf) { | |
2026 | dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq" | |
2027 | "uence\n"); | |
2028 | usb_free_urb(urb); | |
2029 | return -ENOMEM; | |
2030 | } | |
2031 | while (I-- > 0) | |
2032 | buf[i++] = 0x55; | |
2033 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
2034 | ftdi->bulk_out_endpointAddr), buf, i, | |
2035 | ftdi_elan_write_bulk_callback, ftdi); | |
2036 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
2037 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
2038 | if (retval) { | |
2039 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the " | |
2040 | "flush sequence\n"); | |
2041 | usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma); | |
2042 | usb_free_urb(urb); | |
2043 | return -ENOMEM; | |
2044 | } | |
2045 | usb_free_urb(urb); | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | ||
2050 | /* | |
2051 | * send the reset sequence | |
2052 | * | |
2053 | */ | |
2054 | static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) | |
2055 | { | |
2056 | int retval; | |
2057 | struct urb *urb; | |
2058 | char *buf; | |
2059 | int I = 4; | |
2060 | int i = 0; | |
2061 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
2062 | if (!urb) { | |
2063 | dev_err(&ftdi->udev->dev, "could not get a urb for the reset se" | |
2064 | "quence\n"); | |
2065 | return -ENOMEM; | |
2066 | } | |
2067 | buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); | |
2068 | if (!buf) { | |
2069 | dev_err(&ftdi->udev->dev, "could not get a buffer for the reset" | |
2070 | " sequence\n"); | |
2071 | usb_free_urb(urb); | |
2072 | return -ENOMEM; | |
2073 | } | |
2074 | buf[i++] = 0x55; | |
2075 | buf[i++] = 0xAA; | |
2076 | buf[i++] = 0x5A; | |
2077 | buf[i++] = 0xA5; | |
2078 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
2079 | ftdi->bulk_out_endpointAddr), buf, i, | |
2080 | ftdi_elan_write_bulk_callback, ftdi); | |
2081 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
2082 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
2083 | if (retval) { | |
2084 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the " | |
2085 | "reset sequence\n"); | |
2086 | usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma); | |
2087 | usb_free_urb(urb); | |
2088 | return -ENOMEM; | |
2089 | } | |
2090 | usb_free_urb(urb); | |
2091 | return 0; | |
2092 | } | |
2093 | ||
2094 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi) | |
2095 | { | |
2096 | int retval; | |
2097 | int long_stop = 10; | |
2098 | int retry_on_timeout = 5; | |
2099 | int retry_on_empty = 10; | |
2100 | int err_count = 0; | |
2101 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2102 | if (retval) | |
2103 | return retval; | |
2104 | ftdi->bulk_in_left = 0; | |
2105 | ftdi->bulk_in_last = -1; | |
2106 | while (long_stop-- > 0) { | |
2107 | int read_stop; | |
2108 | int read_stuck; | |
2109 | retval = ftdi_elan_synchronize_flush(ftdi); | |
2110 | if (retval) | |
2111 | return retval; | |
2112 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2113 | if (retval) | |
2114 | return retval; | |
2115 | reset:retval = ftdi_elan_synchronize_reset(ftdi); | |
2116 | if (retval) | |
2117 | return retval; | |
2118 | read_stop = 100; | |
2119 | read_stuck = 10; | |
2120 | read:{ | |
2121 | int packet_bytes = 0; | |
2122 | retval = usb_bulk_msg(ftdi->udev, | |
2123 | usb_rcvbulkpipe(ftdi->udev, | |
2124 | ftdi->bulk_in_endpointAddr), | |
2125 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
2126 | &packet_bytes, msecs_to_jiffies(500)); | |
2127 | if (packet_bytes > 2) { | |
2128 | char diag[30 *3 + 4]; | |
2129 | char *d = diag; | |
2130 | int m = (sizeof(diag) - 1) / 3; | |
2131 | char *b = ftdi->bulk_in_buffer; | |
2132 | int bytes_read = 0; | |
2133 | unsigned char c = 0; | |
2134 | diag[0] = 0; | |
2135 | while (packet_bytes-- > 0) { | |
2136 | c = *b++; | |
2137 | if (bytes_read < m) { | |
2138 | d += sprintf(d, " %02X", c); | |
2139 | } else if (bytes_read > m) { | |
2140 | } else | |
2141 | d += sprintf(d, " .."); | |
2142 | bytes_read += 1; | |
2143 | continue; | |
2144 | } | |
2145 | if (c == 0x7E) { | |
2146 | return 0; | |
2147 | } else { | |
2148 | if (c == 0x55) { | |
2149 | goto read; | |
2150 | } else if (read_stop-- > 0) { | |
2151 | goto read; | |
2152 | } else { | |
2153 | dev_err(&ftdi->udev->dev, "retr" | |
2154 | "y limit reached\n"); | |
2155 | continue; | |
2156 | } | |
2157 | } | |
2158 | } else if (packet_bytes > 1) { | |
2159 | unsigned char s1 = ftdi->bulk_in_buffer[0]; | |
2160 | unsigned char s2 = ftdi->bulk_in_buffer[1]; | |
2161 | if (s1 == 0x31 && s2 == 0x00) { | |
2162 | if (read_stuck-- > 0) { | |
2163 | goto read; | |
2164 | } else | |
2165 | goto reset; | |
2166 | } else if (s1 == 0x31 && s2 == 0x60) { | |
2167 | if (read_stop-- > 0) { | |
2168 | goto read; | |
2169 | } else { | |
2170 | dev_err(&ftdi->udev->dev, "retr" | |
2171 | "y limit reached\n"); | |
2172 | continue; | |
2173 | } | |
2174 | } else { | |
2175 | if (read_stop-- > 0) { | |
2176 | goto read; | |
2177 | } else { | |
2178 | dev_err(&ftdi->udev->dev, "retr" | |
2179 | "y limit reached\n"); | |
2180 | continue; | |
2181 | } | |
2182 | } | |
2183 | } else if (packet_bytes > 0) { | |
2184 | if (read_stop-- > 0) { | |
2185 | goto read; | |
2186 | } else { | |
2187 | dev_err(&ftdi->udev->dev, "retry limit " | |
2188 | "reached\n"); | |
2189 | continue; | |
2190 | } | |
2191 | } else if (retval == -ETIMEDOUT) { | |
2192 | if (retry_on_timeout-- > 0) { | |
2193 | goto read; | |
2194 | } else { | |
2195 | dev_err(&ftdi->udev->dev, "TIMED OUT re" | |
2196 | "try limit reached\n"); | |
2197 | continue; | |
2198 | } | |
2199 | } else if (retval == 0) { | |
2200 | if (retry_on_empty-- > 0) { | |
2201 | goto read; | |
2202 | } else { | |
2203 | dev_err(&ftdi->udev->dev, "empty packet" | |
2204 | " retry limit reached\n"); | |
2205 | continue; | |
2206 | } | |
2207 | } else { | |
2208 | err_count += 1; | |
2209 | dev_err(&ftdi->udev->dev, "error = %d\n", | |
2210 | retval); | |
2211 | if (read_stop-- > 0) { | |
2212 | goto read; | |
2213 | } else { | |
2214 | dev_err(&ftdi->udev->dev, "retry limit " | |
2215 | "reached\n"); | |
2216 | continue; | |
2217 | } | |
2218 | } | |
2219 | } | |
2220 | } | |
2221 | dev_err(&ftdi->udev->dev, "failed to synchronize\n"); | |
2222 | return -EFAULT; | |
2223 | } | |
2224 | ||
2225 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi) | |
2226 | { | |
2227 | int retry_on_empty = 10; | |
2228 | int retry_on_timeout = 5; | |
2229 | int retry_on_status = 50; | |
2230 | more:{ | |
2231 | int packet_bytes = 0; | |
2232 | int retval = usb_bulk_msg(ftdi->udev, | |
2233 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
2234 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
2235 | &packet_bytes, msecs_to_jiffies(1000)); | |
2236 | if (packet_bytes > 2) { | |
2237 | char diag[30 *3 + 4]; | |
2238 | char *d = diag; | |
2239 | int m = (sizeof(diag) - 1) / 3; | |
2240 | char *b = ftdi->bulk_in_buffer; | |
2241 | int bytes_read = 0; | |
2242 | diag[0] = 0; | |
2243 | while (packet_bytes-- > 0) { | |
2244 | char c = *b++; | |
2245 | if (bytes_read < m) { | |
2246 | d += sprintf(d, " %02X", | |
2247 | 0x000000FF & c); | |
2248 | } else if (bytes_read > m) { | |
2249 | } else | |
2250 | d += sprintf(d, " .."); | |
2251 | bytes_read += 1; | |
2252 | continue; | |
2253 | } | |
2254 | goto more; | |
2255 | } else if (packet_bytes > 1) { | |
2256 | char s1 = ftdi->bulk_in_buffer[0]; | |
2257 | char s2 = ftdi->bulk_in_buffer[1]; | |
2258 | if (s1 == 0x31 && s2 == 0x60) { | |
2259 | return 0; | |
2260 | } else if (retry_on_status-- > 0) { | |
2261 | msleep(5); | |
2262 | goto more; | |
2263 | } else | |
2264 | return -EFAULT; | |
2265 | } else if (packet_bytes > 0) { | |
2266 | char b1 = ftdi->bulk_in_buffer[0]; | |
2267 | dev_err(&ftdi->udev->dev, "only one byte flushed from F" | |
2268 | "TDI = %02X\n", b1); | |
2269 | if (retry_on_status-- > 0) { | |
2270 | msleep(5); | |
2271 | goto more; | |
2272 | } else { | |
2273 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
2274 | "imit reached\n"); | |
2275 | return -EFAULT; | |
2276 | } | |
2277 | } else if (retval == -ETIMEDOUT) { | |
2278 | if (retry_on_timeout-- > 0) { | |
2279 | goto more; | |
2280 | } else { | |
2281 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limi" | |
2282 | "t reached\n"); | |
2283 | return -ENOMEM; | |
2284 | } | |
2285 | } else if (retval == 0) { | |
2286 | if (retry_on_empty-- > 0) { | |
2287 | goto more; | |
2288 | } else { | |
2289 | dev_err(&ftdi->udev->dev, "empty packet retry l" | |
2290 | "imit reached\n"); | |
2291 | return -ENOMEM; | |
2292 | } | |
2293 | } else { | |
2294 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
2295 | return -ENOMEM; | |
2296 | } | |
2297 | } | |
2298 | return -1; | |
2299 | } | |
2300 | ||
2301 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi) | |
2302 | { | |
2303 | int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg); | |
2304 | if (UxxxStatus) | |
2305 | return UxxxStatus; | |
2306 | if (ftdi->controlreg & 0x00400000) { | |
2307 | if (ftdi->card_ejected) { | |
2308 | } else { | |
2309 | ftdi->card_ejected = 1; | |
2310 | dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = " | |
2311 | "%08X\n", ftdi->controlreg); | |
2312 | } | |
2313 | return -ENODEV; | |
2314 | } else { | |
2315 | u8 fn = ftdi->function - 1; | |
2316 | int activePCIfn = fn << 8; | |
2317 | u32 pcidata; | |
2318 | u32 pciVID; | |
2319 | u32 pciPID; | |
2320 | int reg = 0; | |
2321 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2322 | &pcidata); | |
2323 | if (UxxxStatus) | |
2324 | return UxxxStatus; | |
2325 | pciVID = pcidata & 0xFFFF; | |
2326 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2327 | if (pciVID == ftdi->platform_data.vendor && pciPID == | |
2328 | ftdi->platform_data.device) { | |
2329 | return 0; | |
2330 | } else { | |
2331 | dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X devi" | |
2332 | "ce=%04X pciPID=%04X\n", | |
2333 | ftdi->platform_data.vendor, pciVID, | |
2334 | ftdi->platform_data.device, pciPID); | |
2335 | return -ENODEV; | |
2336 | } | |
2337 | } | |
2338 | } | |
2339 | ||
2340 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi) | |
2341 | { | |
2342 | u32 latence_timer; | |
2343 | u32 controlreg; | |
2344 | int UxxxStatus; | |
2345 | u32 pcidata; | |
2346 | int reg = 0; | |
2347 | int foundOHCI = 0; | |
2348 | u8 fn; | |
2349 | int activePCIfn = 0; | |
2350 | u32 pciVID = 0; | |
2351 | u32 pciPID = 0; | |
2352 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2353 | if (UxxxStatus) | |
2354 | return UxxxStatus; | |
2355 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L); | |
2356 | if (UxxxStatus) | |
2357 | return UxxxStatus; | |
2358 | msleep(750); | |
2359 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100); | |
2360 | if (UxxxStatus) | |
2361 | return UxxxStatus; | |
2362 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500); | |
2363 | if (UxxxStatus) | |
2364 | return UxxxStatus; | |
2365 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2366 | if (UxxxStatus) | |
2367 | return UxxxStatus; | |
2368 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000); | |
2369 | if (UxxxStatus) | |
2370 | return UxxxStatus; | |
2371 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000); | |
2372 | if (UxxxStatus) | |
2373 | return UxxxStatus; | |
2374 | msleep(250); | |
2375 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000); | |
2376 | if (UxxxStatus) | |
2377 | return UxxxStatus; | |
2378 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2379 | if (UxxxStatus) | |
2380 | return UxxxStatus; | |
2381 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800); | |
2382 | if (UxxxStatus) | |
2383 | return UxxxStatus; | |
2384 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2385 | if (UxxxStatus) | |
2386 | return UxxxStatus; | |
2387 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2388 | if (UxxxStatus) | |
2389 | return UxxxStatus; | |
2390 | msleep(1000); | |
2391 | for (fn = 0; (fn < 4) && (!foundOHCI); fn++) { | |
2392 | activePCIfn = fn << 8; | |
2393 | ftdi->function = fn + 1; | |
2394 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2395 | &pcidata); | |
2396 | if (UxxxStatus) | |
2397 | return UxxxStatus; | |
2398 | pciVID = pcidata & 0xFFFF; | |
2399 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2400 | if ((pciVID == 0x1045) && (pciPID == 0xc861)) { | |
2401 | foundOHCI = 1; | |
2402 | } else if ((pciVID == 0x1033) && (pciPID == 0x0035)) { | |
2403 | foundOHCI = 1; | |
2404 | } else if ((pciVID == 0x10b9) && (pciPID == 0x5237)) { | |
2405 | foundOHCI = 1; | |
2406 | } else if ((pciVID == 0x11c1) && (pciPID == 0x5802)) { | |
2407 | foundOHCI = 1; | |
2408 | } else if ((pciVID == 0x11AB) && (pciPID == 0x1FA6)) { | |
2409 | } | |
2410 | } | |
2411 | if (foundOHCI == 0) { | |
2412 | return -ENXIO; | |
2413 | } | |
2414 | ftdi->platform_data.vendor = pciVID; | |
2415 | ftdi->platform_data.device = pciPID; | |
2416 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); | |
2417 | if (UxxxStatus) | |
2418 | return UxxxStatus; | |
2419 | reg = 16; | |
2420 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2421 | 0xFFFFFFFF); | |
2422 | if (UxxxStatus) | |
2423 | return UxxxStatus; | |
2424 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2425 | &pcidata); | |
2426 | if (UxxxStatus) | |
2427 | return UxxxStatus; | |
2428 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2429 | 0xF0000000); | |
2430 | if (UxxxStatus) | |
2431 | return UxxxStatus; | |
2432 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2433 | &pcidata); | |
2434 | if (UxxxStatus) | |
2435 | return UxxxStatus; | |
2436 | reg = 12; | |
2437 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2438 | &latence_timer); | |
2439 | if (UxxxStatus) | |
2440 | return UxxxStatus; | |
2441 | latence_timer &= 0xFFFF00FF; | |
2442 | latence_timer |= 0x00001600; | |
2443 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2444 | latence_timer); | |
2445 | if (UxxxStatus) | |
2446 | return UxxxStatus; | |
2447 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2448 | &pcidata); | |
2449 | if (UxxxStatus) | |
2450 | return UxxxStatus; | |
2451 | reg = 4; | |
2452 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2453 | 0x06); | |
2454 | if (UxxxStatus) | |
2455 | return UxxxStatus; | |
2456 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2457 | &pcidata); | |
2458 | if (UxxxStatus) | |
2459 | return UxxxStatus; | |
2460 | return 0; | |
2461 | } | |
2462 | ||
2463 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi) | |
2464 | { | |
2465 | u32 pcidata; | |
2466 | int U132Status; | |
2467 | int reg; | |
2468 | int reset_repeat = 0; | |
2469 | do_reset:reg = 8; | |
2470 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x0e, 0x01); | |
2471 | if (U132Status) | |
2472 | return U132Status; | |
2473 | reset_check:{ | |
2474 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2475 | if (U132Status) | |
2476 | return U132Status; | |
2477 | if (pcidata & 1) { | |
2478 | msleep(500); | |
2479 | if (reset_repeat++ > 100) { | |
2480 | reset_repeat = 0; | |
2481 | goto do_reset; | |
2482 | } else | |
2483 | goto reset_check; | |
2484 | } | |
2485 | } | |
2486 | goto dump_regs; | |
2487 | msleep(500); | |
2488 | reg = 0x28; | |
2489 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x11000000); | |
2490 | if (U132Status) | |
2491 | return U132Status; | |
2492 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2493 | if (U132Status) | |
2494 | return U132Status; | |
2495 | reg = 0x40; | |
2496 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x2edf); | |
2497 | if (U132Status) | |
2498 | return U132Status; | |
2499 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2500 | if (U132Status) | |
2501 | return U132Status; | |
2502 | reg = 0x34; | |
2503 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x2edf2edf); | |
2504 | if (U132Status) | |
2505 | return U132Status; | |
2506 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2507 | if (U132Status) | |
2508 | return U132Status; | |
2509 | reg = 4; | |
2510 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0xA0); | |
2511 | if (U132Status) | |
2512 | return U132Status; | |
2513 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2514 | if (U132Status) | |
2515 | return U132Status; | |
2516 | msleep(250); | |
2517 | reg = 8; | |
2518 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x0e, 0x04); | |
2519 | if (U132Status) | |
2520 | return U132Status; | |
2521 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2522 | if (U132Status) | |
2523 | return U132Status; | |
2524 | reg = 0x28; | |
2525 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2526 | if (U132Status) | |
2527 | return U132Status; | |
2528 | reg = 8; | |
2529 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2530 | if (U132Status) | |
2531 | return U132Status; | |
2532 | reg = 0x48; | |
2533 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x00001200); | |
2534 | if (U132Status) | |
2535 | return U132Status; | |
2536 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2537 | if (U132Status) | |
2538 | return U132Status; | |
2539 | reg = 0x54; | |
2540 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2541 | if (U132Status) | |
2542 | return U132Status; | |
2543 | reg = 0x58; | |
2544 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2545 | if (U132Status) | |
2546 | return U132Status; | |
2547 | reg = 0x34; | |
2548 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x28002edf); | |
2549 | if (U132Status) | |
2550 | return U132Status; | |
2551 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2552 | if (U132Status) | |
2553 | return U132Status; | |
2554 | msleep(100); | |
2555 | reg = 0x50; | |
2556 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x10000); | |
2557 | if (U132Status) | |
2558 | return U132Status; | |
2559 | reg = 0x54; | |
2560 | power_check:U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2561 | if (U132Status) | |
2562 | return U132Status; | |
2563 | if (!(pcidata & 1)) { | |
2564 | msleep(500); | |
2565 | goto power_check; | |
2566 | } | |
2567 | msleep(3000); | |
2568 | reg = 0x54; | |
2569 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2570 | if (U132Status) | |
2571 | return U132Status; | |
2572 | reg = 0x58; | |
2573 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2574 | if (U132Status) | |
2575 | return U132Status; | |
2576 | reg = 0x54; | |
2577 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x02); | |
2578 | if (U132Status) | |
2579 | return U132Status; | |
2580 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2581 | if (U132Status) | |
2582 | return U132Status; | |
2583 | reg = 0x54; | |
2584 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x10); | |
2585 | if (U132Status) | |
2586 | return U132Status; | |
2587 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2588 | if (U132Status) | |
2589 | return U132Status; | |
2590 | msleep(750); | |
2591 | reg = 0x54; | |
2592 | if (0) { | |
2593 | U132Status = ftdi_elan_write_pcimem(ftdi, reg, 0x00, 0x02); | |
2594 | if (U132Status) | |
2595 | return U132Status; | |
2596 | } | |
2597 | if (0) { | |
2598 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2599 | if (U132Status) | |
2600 | return U132Status; | |
2601 | } | |
2602 | reg = 0x54; | |
2603 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2604 | if (U132Status) | |
2605 | return U132Status; | |
2606 | reg = 0x58; | |
2607 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2608 | if (U132Status) | |
2609 | return U132Status; | |
2610 | dump_regs:for (reg = 0; reg <= 0x54; reg += 4) { | |
2611 | U132Status = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2612 | if (U132Status) | |
2613 | return U132Status; | |
2614 | } | |
2615 | return 0; | |
2616 | } | |
2617 | ||
2618 | ||
2619 | /* | |
2620 | * we use only the first bulk-in and bulk-out endpoints | |
2621 | */ | |
2622 | static int ftdi_elan_probe(struct usb_interface *interface, | |
2623 | const struct usb_device_id *id) | |
2624 | { | |
2625 | struct usb_host_interface *iface_desc; | |
2626 | struct usb_endpoint_descriptor *endpoint; | |
2627 | size_t buffer_size; | |
2628 | int i; | |
2629 | int retval = -ENOMEM; | |
2630 | struct usb_ftdi *ftdi = kmalloc(sizeof(struct usb_ftdi), GFP_KERNEL); | |
2631 | if (ftdi == NULL) { | |
2632 | printk(KERN_ERR "Out of memory\n"); | |
2633 | return -ENOMEM; | |
2634 | } | |
2635 | memset(ftdi, 0x00, sizeof(struct usb_ftdi)); | |
2636 | down(&ftdi_module_lock); | |
2637 | list_add_tail(&ftdi->ftdi_list, &ftdi_static_list); | |
2638 | ftdi->sequence_num = ++ftdi_instances; | |
2639 | up(&ftdi_module_lock); | |
2640 | ftdi_elan_init_kref(ftdi); | |
2641 | init_MUTEX(&ftdi->sw_lock); | |
2642 | ftdi->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2643 | ftdi->interface = interface; | |
2644 | init_MUTEX(&ftdi->u132_lock); | |
2645 | ftdi->expected = 4; | |
2646 | iface_desc = interface->cur_altsetting; | |
2647 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2648 | endpoint = &iface_desc->endpoint[i].desc; | |
2649 | if (!ftdi->bulk_in_endpointAddr && | |
2650 | ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
2651 | == USB_DIR_IN) && ((endpoint->bmAttributes & | |
2652 | USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) | |
2653 | { | |
2654 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); | |
2655 | ftdi->bulk_in_size = buffer_size; | |
2656 | ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; | |
2657 | ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2658 | if (!ftdi->bulk_in_buffer) { | |
2659 | dev_err(&ftdi->udev->dev, "Could not allocate b" | |
2660 | "ulk_in_buffer\n"); | |
2661 | retval = -ENOMEM; | |
2662 | goto error; | |
2663 | } | |
2664 | } | |
2665 | if (!ftdi->bulk_out_endpointAddr && | |
2666 | ((endpoint->bEndpointAddress & USB_ENDPOINT_DIR_MASK) | |
2667 | == USB_DIR_OUT) && ((endpoint->bmAttributes & | |
2668 | USB_ENDPOINT_XFERTYPE_MASK) == USB_ENDPOINT_XFER_BULK)) | |
2669 | { | |
2670 | ftdi->bulk_out_endpointAddr = | |
2671 | endpoint->bEndpointAddress; | |
2672 | } | |
2673 | } | |
2674 | if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) { | |
2675 | dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk" | |
2676 | "-out endpoints\n"); | |
2677 | retval = -ENODEV; | |
2678 | goto error; | |
2679 | } | |
2680 | dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", | |
2681 | iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, | |
2682 | ftdi->bulk_out_endpointAddr); | |
2683 | usb_set_intfdata(interface, ftdi); | |
2684 | if (iface_desc->desc.bInterfaceNumber == 0 && | |
2685 | ftdi->bulk_in_endpointAddr == 0x81 && | |
2686 | ftdi->bulk_out_endpointAddr == 0x02) { | |
2687 | retval = usb_register_dev(interface, &ftdi_elan_jtag_class); | |
2688 | if (retval) { | |
2689 | dev_err(&ftdi->udev->dev, "Not able to get a minor for " | |
2690 | "this device.\n"); | |
2691 | usb_set_intfdata(interface, NULL); | |
2692 | retval = -ENOMEM; | |
2693 | goto error; | |
2694 | } else { | |
2695 | ftdi->class = &ftdi_elan_jtag_class; | |
2696 | dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface " | |
2697 | "%d now attached to ftdi%d\n", ftdi, | |
2698 | iface_desc->desc.bInterfaceNumber, | |
2699 | interface->minor); | |
2700 | return 0; | |
2701 | } | |
2702 | } else if (iface_desc->desc.bInterfaceNumber == 1 && | |
2703 | ftdi->bulk_in_endpointAddr == 0x83 && | |
2704 | ftdi->bulk_out_endpointAddr == 0x04) { | |
2705 | ftdi->class = NULL; | |
2706 | dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now a" | |
2707 | "ctivated\n", ftdi, iface_desc->desc.bInterfaceNumber); | |
2708 | INIT_WORK(&ftdi->status_work, ftdi_elan_status_work, | |
2709 | (void *)ftdi); | |
2710 | INIT_WORK(&ftdi->command_work, ftdi_elan_command_work, | |
2711 | (void *)ftdi); | |
2712 | INIT_WORK(&ftdi->respond_work, ftdi_elan_respond_work, | |
2713 | (void *)ftdi); | |
2714 | ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000)); | |
2715 | return 0; | |
2716 | } else { | |
2717 | dev_err(&ftdi->udev->dev, | |
2718 | "Could not find ELAN's U132 device\n"); | |
2719 | retval = -ENODEV; | |
2720 | goto error; | |
2721 | } | |
2722 | error:if (ftdi) { | |
2723 | ftdi_elan_put_kref(ftdi); | |
2724 | } | |
2725 | return retval; | |
2726 | } | |
2727 | ||
2728 | static void ftdi_elan_disconnect(struct usb_interface *interface) | |
2729 | { | |
2730 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); | |
2731 | ftdi->disconnected += 1; | |
2732 | if (ftdi->class) { | |
2733 | int minor = interface->minor; | |
2734 | struct usb_class_driver *class = ftdi->class; | |
2735 | usb_set_intfdata(interface, NULL); | |
2736 | usb_deregister_dev(interface, class); | |
2737 | dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on min" | |
2738 | "or %d now disconnected\n", minor); | |
2739 | } else { | |
2740 | ftdi_status_cancel_work(ftdi); | |
2741 | ftdi_command_cancel_work(ftdi); | |
2742 | ftdi_response_cancel_work(ftdi); | |
2743 | ftdi_elan_abandon_completions(ftdi); | |
2744 | ftdi_elan_abandon_targets(ftdi); | |
2745 | if (ftdi->registered) { | |
2746 | platform_device_unregister(&ftdi->platform_dev); | |
2747 | ftdi->synchronized = 0; | |
2748 | ftdi->enumerated = 0; | |
2749 | ftdi->registered = 0; | |
2750 | } | |
2751 | flush_workqueue(status_queue); | |
2752 | flush_workqueue(command_queue); | |
2753 | flush_workqueue(respond_queue); | |
2754 | ftdi->disconnected += 1; | |
2755 | usb_set_intfdata(interface, NULL); | |
2756 | dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller inter" | |
2757 | "face now disconnected\n"); | |
2758 | } | |
2759 | ftdi_elan_put_kref(ftdi); | |
2760 | } | |
2761 | ||
2762 | static struct usb_driver ftdi_elan_driver = { | |
2763 | .name = "ftdi-elan", | |
2764 | .probe = ftdi_elan_probe, | |
2765 | .disconnect = ftdi_elan_disconnect, | |
2766 | .id_table = ftdi_elan_table, | |
2767 | }; | |
2768 | static int __init ftdi_elan_init(void) | |
2769 | { | |
2770 | int result; | |
2771 | printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name, | |
2772 | __TIME__, __DATE__); | |
2773 | init_MUTEX(&ftdi_module_lock); | |
2774 | INIT_LIST_HEAD(&ftdi_static_list); | |
2775 | status_queue = create_singlethread_workqueue("ftdi-status-control"); | |
2776 | command_queue = create_singlethread_workqueue("ftdi-command-engine"); | |
2777 | respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); | |
2778 | result = usb_register(&ftdi_elan_driver); | |
2779 | if (result) | |
2780 | printk(KERN_ERR "usb_register failed. Error number %d\n", | |
2781 | result); | |
2782 | return result; | |
2783 | } | |
2784 | ||
2785 | static void __exit ftdi_elan_exit(void) | |
2786 | { | |
2787 | struct usb_ftdi *ftdi; | |
2788 | struct usb_ftdi *temp; | |
2789 | usb_deregister(&ftdi_elan_driver); | |
2790 | printk(KERN_INFO "ftdi_u132 driver deregistered\n"); | |
2791 | list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) { | |
2792 | ftdi_status_cancel_work(ftdi); | |
2793 | ftdi_command_cancel_work(ftdi); | |
2794 | ftdi_response_cancel_work(ftdi); | |
2795 | } flush_workqueue(status_queue); | |
2796 | destroy_workqueue(status_queue); | |
2797 | status_queue = NULL; | |
2798 | flush_workqueue(command_queue); | |
2799 | destroy_workqueue(command_queue); | |
2800 | command_queue = NULL; | |
2801 | flush_workqueue(respond_queue); | |
2802 | destroy_workqueue(respond_queue); | |
2803 | respond_queue = NULL; | |
2804 | } | |
2805 | ||
2806 | ||
2807 | module_init(ftdi_elan_init); | |
2808 | module_exit(ftdi_elan_exit); |