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Commit | Line | Data |
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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> | |
4b87361d | 43 | #include <linux/pci_ids.h> |
a5c66e4b TO |
44 | #include <linux/slab.h> |
45 | #include <linux/module.h> | |
46 | #include <linux/kref.h> | |
eb33caec | 47 | #include <linux/mutex.h> |
a5c66e4b TO |
48 | #include <asm/uaccess.h> |
49 | #include <linux/usb.h> | |
50 | #include <linux/workqueue.h> | |
51 | #include <linux/platform_device.h> | |
52 | MODULE_AUTHOR("Tony Olech"); | |
53 | MODULE_DESCRIPTION("FTDI ELAN driver"); | |
54 | MODULE_LICENSE("GPL"); | |
55 | #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444) | |
4b87361d TO |
56 | static int distrust_firmware = 1; |
57 | module_param(distrust_firmware, bool, 0); | |
58 | MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren" | |
59 | "t setup"); | |
a5c66e4b TO |
60 | extern struct platform_driver u132_platform_driver; |
61 | static struct workqueue_struct *status_queue; | |
62 | static struct workqueue_struct *command_queue; | |
63 | static struct workqueue_struct *respond_queue; | |
64 | /* | |
65 | * ftdi_module_lock exists to protect access to global variables | |
66 | * | |
67 | */ | |
eb33caec | 68 | static struct mutex ftdi_module_lock; |
a5c66e4b TO |
69 | static int ftdi_instances = 0; |
70 | static struct list_head ftdi_static_list; | |
71 | /* | |
72 | * end of the global variables protected by ftdi_module_lock | |
73 | */ | |
74 | #include "usb_u132.h" | |
4b87361d | 75 | #include <asm/io.h> |
27729aad | 76 | #include <linux/usb/hcd.h> |
47f8468e DB |
77 | |
78 | /* FIXME ohci.h is ONLY for internal use by the OHCI driver. | |
79 | * If you're going to try stuff like this, you need to split | |
80 | * out shareable stuff (register declarations?) into its own | |
81 | * file, maybe name <linux/usb/ohci.h> | |
82 | */ | |
83 | ||
4b87361d | 84 | #include "../host/ohci.h" |
a5c66e4b TO |
85 | /* Define these values to match your devices*/ |
86 | #define USB_FTDI_ELAN_VENDOR_ID 0x0403 | |
87 | #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea | |
88 | /* table of devices that work with this driver*/ | |
33b9e162 | 89 | static const struct usb_device_id ftdi_elan_table[] = { |
a5c66e4b TO |
90 | {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)}, |
91 | { /* Terminating entry */ } | |
92 | }; | |
93 | ||
94 | MODULE_DEVICE_TABLE(usb, ftdi_elan_table); | |
95 | /* only the jtag(firmware upgrade device) interface requires | |
96 | * a device file and corresponding minor number, but the | |
97 | * interface is created unconditionally - I suppose it could | |
98 | * be configured or not according to a module parameter. | |
99 | * But since we(now) require one interface per device, | |
100 | * and since it unlikely that a normal installation would | |
101 | * require more than a couple of elan-ftdi devices, 8 seems | |
102 | * like a reasonable limit to have here, and if someone | |
103 | * really requires more than 8 devices, then they can frig the | |
104 | * code and recompile | |
105 | */ | |
106 | #define USB_FTDI_ELAN_MINOR_BASE 192 | |
107 | #define COMMAND_BITS 5 | |
108 | #define COMMAND_SIZE (1<<COMMAND_BITS) | |
109 | #define COMMAND_MASK (COMMAND_SIZE-1) | |
110 | struct u132_command { | |
111 | u8 header; | |
112 | u16 length; | |
113 | u8 address; | |
114 | u8 width; | |
115 | u32 value; | |
116 | int follows; | |
117 | void *buffer; | |
118 | }; | |
119 | #define RESPOND_BITS 5 | |
120 | #define RESPOND_SIZE (1<<RESPOND_BITS) | |
121 | #define RESPOND_MASK (RESPOND_SIZE-1) | |
122 | struct u132_respond { | |
123 | u8 header; | |
124 | u8 address; | |
125 | u32 *value; | |
126 | int *result; | |
127 | struct completion wait_completion; | |
128 | }; | |
129 | struct u132_target { | |
130 | void *endp; | |
131 | struct urb *urb; | |
132 | int toggle_bits; | |
133 | int error_count; | |
134 | int condition_code; | |
135 | int repeat_number; | |
136 | int halted; | |
137 | int skipped; | |
138 | int actual; | |
139 | int non_null; | |
140 | int active; | |
141 | int abandoning; | |
142 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
143 | int toggle_bits, int error_count, int condition_code, | |
144 | int repeat_number, int halted, int skipped, int actual, | |
145 | int non_null); | |
146 | }; | |
147 | /* Structure to hold all of our device specific stuff*/ | |
148 | struct usb_ftdi { | |
149 | struct list_head ftdi_list; | |
c93d4650 | 150 | struct mutex u132_lock; |
a5c66e4b TO |
151 | int command_next; |
152 | int command_head; | |
153 | struct u132_command command[COMMAND_SIZE]; | |
154 | int respond_next; | |
155 | int respond_head; | |
156 | struct u132_respond respond[RESPOND_SIZE]; | |
157 | struct u132_target target[4]; | |
158 | char device_name[16]; | |
159 | unsigned synchronized:1; | |
160 | unsigned enumerated:1; | |
161 | unsigned registered:1; | |
162 | unsigned initialized:1; | |
163 | unsigned card_ejected:1; | |
164 | int function; | |
165 | int sequence_num; | |
166 | int disconnected; | |
167 | int gone_away; | |
168 | int stuck_status; | |
169 | int status_queue_delay; | |
170 | struct semaphore sw_lock; | |
171 | struct usb_device *udev; | |
172 | struct usb_interface *interface; | |
173 | struct usb_class_driver *class; | |
c4028958 DH |
174 | struct delayed_work status_work; |
175 | struct delayed_work command_work; | |
176 | struct delayed_work respond_work; | |
a5c66e4b TO |
177 | struct u132_platform_data platform_data; |
178 | struct resource resources[0]; | |
179 | struct platform_device platform_dev; | |
180 | unsigned char *bulk_in_buffer; | |
181 | size_t bulk_in_size; | |
182 | size_t bulk_in_last; | |
183 | size_t bulk_in_left; | |
184 | __u8 bulk_in_endpointAddr; | |
185 | __u8 bulk_out_endpointAddr; | |
186 | struct kref kref; | |
187 | u32 controlreg; | |
188 | u8 response[4 + 1024]; | |
189 | int expected; | |
190 | int recieved; | |
191 | int ed_found; | |
192 | }; | |
193 | #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref) | |
194 | #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \ | |
195 | platform_dev) | |
196 | static struct usb_driver ftdi_elan_driver; | |
197 | static void ftdi_elan_delete(struct kref *kref) | |
198 | { | |
199 | struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref); | |
200 | dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi); | |
201 | usb_put_dev(ftdi->udev); | |
202 | ftdi->disconnected += 1; | |
eb33caec | 203 | mutex_lock(&ftdi_module_lock); |
a5c66e4b TO |
204 | list_del_init(&ftdi->ftdi_list); |
205 | ftdi_instances -= 1; | |
eb33caec | 206 | mutex_unlock(&ftdi_module_lock); |
a5c66e4b TO |
207 | kfree(ftdi->bulk_in_buffer); |
208 | ftdi->bulk_in_buffer = NULL; | |
209 | } | |
210 | ||
211 | static void ftdi_elan_put_kref(struct usb_ftdi *ftdi) | |
212 | { | |
213 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
214 | } | |
215 | ||
216 | static void ftdi_elan_get_kref(struct usb_ftdi *ftdi) | |
217 | { | |
218 | kref_get(&ftdi->kref); | |
219 | } | |
220 | ||
221 | static void ftdi_elan_init_kref(struct usb_ftdi *ftdi) | |
222 | { | |
223 | kref_init(&ftdi->kref); | |
224 | } | |
225 | ||
226 | static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
227 | { | |
c4028958 DH |
228 | if (!queue_delayed_work(status_queue, &ftdi->status_work, delta)) |
229 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
230 | } |
231 | ||
232 | static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
233 | { | |
c4028958 DH |
234 | if (queue_delayed_work(status_queue, &ftdi->status_work, delta)) |
235 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
236 | } |
237 | ||
238 | static void ftdi_status_cancel_work(struct usb_ftdi *ftdi) | |
239 | { | |
240 | if (cancel_delayed_work(&ftdi->status_work)) | |
241 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
242 | } | |
243 | ||
244 | static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
245 | { | |
c4028958 DH |
246 | if (!queue_delayed_work(command_queue, &ftdi->command_work, delta)) |
247 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
248 | } |
249 | ||
250 | static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
251 | { | |
c4028958 DH |
252 | if (queue_delayed_work(command_queue, &ftdi->command_work, delta)) |
253 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
254 | } |
255 | ||
256 | static void ftdi_command_cancel_work(struct usb_ftdi *ftdi) | |
257 | { | |
258 | if (cancel_delayed_work(&ftdi->command_work)) | |
259 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
260 | } | |
261 | ||
262 | static void ftdi_response_requeue_work(struct usb_ftdi *ftdi, | |
263 | unsigned int delta) | |
264 | { | |
c4028958 DH |
265 | if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) |
266 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
267 | } |
268 | ||
269 | static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
270 | { | |
c4028958 DH |
271 | if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) |
272 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
273 | } |
274 | ||
275 | static void ftdi_response_cancel_work(struct usb_ftdi *ftdi) | |
276 | { | |
277 | if (cancel_delayed_work(&ftdi->respond_work)) | |
278 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
279 | } | |
280 | ||
281 | void ftdi_elan_gone_away(struct platform_device *pdev) | |
282 | { | |
283 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
284 | ftdi->gone_away += 1; | |
285 | ftdi_elan_put_kref(ftdi); | |
286 | } | |
287 | ||
288 | ||
289 | EXPORT_SYMBOL_GPL(ftdi_elan_gone_away); | |
9ce8540c | 290 | static void ftdi_release_platform_dev(struct device *dev) |
a5c66e4b TO |
291 | { |
292 | dev->parent = NULL; | |
293 | } | |
294 | ||
295 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
296 | struct u132_target *target, u8 *buffer, int length); | |
297 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi); | |
298 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi); | |
299 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi); | |
300 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi); | |
301 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi); | |
302 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi); | |
303 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi); | |
304 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi); | |
305 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi); | |
306 | static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi) | |
307 | { | |
308 | int result; | |
309 | if (ftdi->platform_dev.dev.parent) | |
310 | return -EBUSY; | |
311 | ftdi_elan_get_kref(ftdi); | |
312 | ftdi->platform_data.potpg = 100; | |
313 | ftdi->platform_data.reset = NULL; | |
314 | ftdi->platform_dev.id = ftdi->sequence_num; | |
315 | ftdi->platform_dev.resource = ftdi->resources; | |
316 | ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources); | |
317 | ftdi->platform_dev.dev.platform_data = &ftdi->platform_data; | |
318 | ftdi->platform_dev.dev.parent = NULL; | |
319 | ftdi->platform_dev.dev.release = ftdi_release_platform_dev; | |
320 | ftdi->platform_dev.dev.dma_mask = NULL; | |
321 | snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd"); | |
322 | ftdi->platform_dev.name = ftdi->device_name; | |
323 | dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd"); | |
324 | request_module("u132_hcd"); | |
325 | dev_info(&ftdi->udev->dev, "registering '%s'\n", | |
326 | ftdi->platform_dev.name); | |
327 | result = platform_device_register(&ftdi->platform_dev); | |
328 | return result; | |
329 | } | |
330 | ||
331 | static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi) | |
332 | { | |
c93d4650 | 333 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
334 | while (ftdi->respond_next > ftdi->respond_head) { |
335 | struct u132_respond *respond = &ftdi->respond[RESPOND_MASK & | |
336 | ftdi->respond_head++]; | |
337 | *respond->result = -ESHUTDOWN; | |
338 | *respond->value = 0; | |
339 | complete(&respond->wait_completion); | |
c93d4650 | 340 | } mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
341 | } |
342 | ||
343 | static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi) | |
344 | { | |
345 | int ed_number = 4; | |
c93d4650 | 346 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
347 | while (ed_number-- > 0) { |
348 | struct u132_target *target = &ftdi->target[ed_number]; | |
349 | if (target->active == 1) { | |
350 | target->condition_code = TD_DEVNOTRESP; | |
c93d4650 | 351 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b | 352 | ftdi_elan_do_callback(ftdi, target, NULL, 0); |
c93d4650 | 353 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
354 | } |
355 | } | |
356 | ftdi->recieved = 0; | |
357 | ftdi->expected = 4; | |
358 | ftdi->ed_found = 0; | |
c93d4650 | 359 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
360 | } |
361 | ||
362 | static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi) | |
363 | { | |
364 | int ed_number = 4; | |
c93d4650 | 365 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
366 | while (ed_number-- > 0) { |
367 | struct u132_target *target = &ftdi->target[ed_number]; | |
368 | target->abandoning = 1; | |
369 | wait_1:if (target->active == 1) { | |
370 | int command_size = ftdi->command_next - | |
371 | ftdi->command_head; | |
372 | if (command_size < COMMAND_SIZE) { | |
373 | struct u132_command *command = &ftdi->command[ | |
374 | COMMAND_MASK & ftdi->command_next]; | |
375 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
376 | command->length = 0x00; | |
377 | command->address = 0x00; | |
378 | command->width = 0x00; | |
379 | command->follows = 0; | |
380 | command->value = 0; | |
381 | command->buffer = &command->value; | |
382 | ftdi->command_next += 1; | |
383 | ftdi_elan_kick_command_queue(ftdi); | |
384 | } else { | |
c93d4650 | 385 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b | 386 | msleep(100); |
c93d4650 | 387 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
388 | goto wait_1; |
389 | } | |
390 | } | |
391 | wait_2:if (target->active == 1) { | |
392 | int command_size = ftdi->command_next - | |
393 | ftdi->command_head; | |
394 | if (command_size < COMMAND_SIZE) { | |
395 | struct u132_command *command = &ftdi->command[ | |
396 | COMMAND_MASK & ftdi->command_next]; | |
397 | command->header = 0x90 | (ed_number << 5); | |
398 | command->length = 0x00; | |
399 | command->address = 0x00; | |
400 | command->width = 0x00; | |
401 | command->follows = 0; | |
402 | command->value = 0; | |
403 | command->buffer = &command->value; | |
404 | ftdi->command_next += 1; | |
405 | ftdi_elan_kick_command_queue(ftdi); | |
406 | } else { | |
c93d4650 | 407 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b | 408 | msleep(100); |
c93d4650 | 409 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
410 | goto wait_2; |
411 | } | |
412 | } | |
413 | } | |
414 | ftdi->recieved = 0; | |
415 | ftdi->expected = 4; | |
416 | ftdi->ed_found = 0; | |
c93d4650 | 417 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
418 | } |
419 | ||
420 | static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi) | |
421 | { | |
422 | int ed_number = 4; | |
c93d4650 | 423 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
424 | while (ed_number-- > 0) { |
425 | struct u132_target *target = &ftdi->target[ed_number]; | |
426 | target->abandoning = 1; | |
427 | wait:if (target->active == 1) { | |
428 | int command_size = ftdi->command_next - | |
429 | ftdi->command_head; | |
430 | if (command_size < COMMAND_SIZE) { | |
431 | struct u132_command *command = &ftdi->command[ | |
432 | COMMAND_MASK & ftdi->command_next]; | |
433 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
434 | command->length = 0x00; | |
435 | command->address = 0x00; | |
436 | command->width = 0x00; | |
437 | command->follows = 0; | |
438 | command->value = 0; | |
439 | command->buffer = &command->value; | |
440 | ftdi->command_next += 1; | |
441 | ftdi_elan_kick_command_queue(ftdi); | |
442 | } else { | |
c93d4650 | 443 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b | 444 | msleep(100); |
c93d4650 | 445 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
446 | goto wait; |
447 | } | |
448 | } | |
449 | } | |
450 | ftdi->recieved = 0; | |
451 | ftdi->expected = 4; | |
452 | ftdi->ed_found = 0; | |
c93d4650 | 453 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
454 | } |
455 | ||
456 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi) | |
457 | { | |
458 | ftdi_command_queue_work(ftdi, 0); | |
459 | return; | |
460 | } | |
461 | ||
c4028958 | 462 | static void ftdi_elan_command_work(struct work_struct *work) |
a5c66e4b | 463 | { |
c4028958 DH |
464 | struct usb_ftdi *ftdi = |
465 | container_of(work, struct usb_ftdi, command_work.work); | |
466 | ||
a5c66e4b TO |
467 | if (ftdi->disconnected > 0) { |
468 | ftdi_elan_put_kref(ftdi); | |
469 | return; | |
470 | } else { | |
471 | int retval = ftdi_elan_command_engine(ftdi); | |
472 | if (retval == -ESHUTDOWN) { | |
473 | ftdi->disconnected += 1; | |
474 | } else if (retval == -ENODEV) { | |
475 | ftdi->disconnected += 1; | |
476 | } else if (retval) | |
477 | dev_err(&ftdi->udev->dev, "command error %d\n", retval); | |
478 | ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10)); | |
479 | return; | |
480 | } | |
481 | } | |
482 | ||
483 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi) | |
484 | { | |
485 | ftdi_respond_queue_work(ftdi, 0); | |
486 | return; | |
487 | } | |
488 | ||
c4028958 | 489 | static void ftdi_elan_respond_work(struct work_struct *work) |
a5c66e4b | 490 | { |
c4028958 DH |
491 | struct usb_ftdi *ftdi = |
492 | container_of(work, struct usb_ftdi, respond_work.work); | |
a5c66e4b TO |
493 | if (ftdi->disconnected > 0) { |
494 | ftdi_elan_put_kref(ftdi); | |
495 | return; | |
496 | } else { | |
497 | int retval = ftdi_elan_respond_engine(ftdi); | |
498 | if (retval == 0) { | |
499 | } else if (retval == -ESHUTDOWN) { | |
500 | ftdi->disconnected += 1; | |
501 | } else if (retval == -ENODEV) { | |
502 | ftdi->disconnected += 1; | |
a5c66e4b TO |
503 | } else if (retval == -EILSEQ) { |
504 | ftdi->disconnected += 1; | |
505 | } else { | |
506 | ftdi->disconnected += 1; | |
507 | dev_err(&ftdi->udev->dev, "respond error %d\n", retval); | |
508 | } | |
509 | if (ftdi->disconnected > 0) { | |
510 | ftdi_elan_abandon_completions(ftdi); | |
511 | ftdi_elan_abandon_targets(ftdi); | |
512 | } | |
513 | ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10)); | |
514 | return; | |
515 | } | |
516 | } | |
517 | ||
518 | ||
519 | /* | |
520 | * the sw_lock is initially held and will be freed | |
521 | * after the FTDI has been synchronized | |
522 | * | |
523 | */ | |
c4028958 | 524 | static void ftdi_elan_status_work(struct work_struct *work) |
a5c66e4b | 525 | { |
c4028958 DH |
526 | struct usb_ftdi *ftdi = |
527 | container_of(work, struct usb_ftdi, status_work.work); | |
a5c66e4b TO |
528 | int work_delay_in_msec = 0; |
529 | if (ftdi->disconnected > 0) { | |
530 | ftdi_elan_put_kref(ftdi); | |
531 | return; | |
532 | } else if (ftdi->synchronized == 0) { | |
533 | down(&ftdi->sw_lock); | |
534 | if (ftdi_elan_synchronize(ftdi) == 0) { | |
535 | ftdi->synchronized = 1; | |
536 | ftdi_command_queue_work(ftdi, 1); | |
537 | ftdi_respond_queue_work(ftdi, 1); | |
538 | up(&ftdi->sw_lock); | |
539 | work_delay_in_msec = 100; | |
540 | } else { | |
541 | dev_err(&ftdi->udev->dev, "synchronize failed\n"); | |
542 | up(&ftdi->sw_lock); | |
543 | work_delay_in_msec = 10 *1000; | |
544 | } | |
545 | } else if (ftdi->stuck_status > 0) { | |
546 | if (ftdi_elan_stuck_waiting(ftdi) == 0) { | |
547 | ftdi->stuck_status = 0; | |
548 | ftdi->synchronized = 0; | |
549 | } else if ((ftdi->stuck_status++ % 60) == 1) { | |
550 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted " | |
551 | "- please remove\n"); | |
552 | } else | |
553 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted " | |
554 | "- checked %d times\n", ftdi->stuck_status); | |
555 | work_delay_in_msec = 100; | |
556 | } else if (ftdi->enumerated == 0) { | |
557 | if (ftdi_elan_enumeratePCI(ftdi) == 0) { | |
558 | ftdi->enumerated = 1; | |
559 | work_delay_in_msec = 250; | |
560 | } else | |
561 | work_delay_in_msec = 1000; | |
562 | } else if (ftdi->initialized == 0) { | |
563 | if (ftdi_elan_setupOHCI(ftdi) == 0) { | |
564 | ftdi->initialized = 1; | |
565 | work_delay_in_msec = 500; | |
566 | } else { | |
567 | dev_err(&ftdi->udev->dev, "initialized failed - trying " | |
568 | "again in 10 seconds\n"); | |
4b87361d | 569 | work_delay_in_msec = 1 *1000; |
a5c66e4b TO |
570 | } |
571 | } else if (ftdi->registered == 0) { | |
572 | work_delay_in_msec = 10; | |
573 | if (ftdi_elan_hcd_init(ftdi) == 0) { | |
574 | ftdi->registered = 1; | |
575 | } else | |
576 | dev_err(&ftdi->udev->dev, "register failed\n"); | |
577 | work_delay_in_msec = 250; | |
578 | } else { | |
579 | if (ftdi_elan_checkingPCI(ftdi) == 0) { | |
580 | work_delay_in_msec = 250; | |
581 | } else if (ftdi->controlreg & 0x00400000) { | |
582 | if (ftdi->gone_away > 0) { | |
583 | dev_err(&ftdi->udev->dev, "PCI device eject con" | |
584 | "firmed platform_dev.dev.parent=%p plat" | |
585 | "form_dev.dev=%p\n", | |
586 | ftdi->platform_dev.dev.parent, | |
587 | &ftdi->platform_dev.dev); | |
588 | platform_device_unregister(&ftdi->platform_dev); | |
589 | ftdi->platform_dev.dev.parent = NULL; | |
590 | ftdi->registered = 0; | |
591 | ftdi->enumerated = 0; | |
592 | ftdi->card_ejected = 0; | |
593 | ftdi->initialized = 0; | |
594 | ftdi->gone_away = 0; | |
595 | } else | |
596 | ftdi_elan_flush_targets(ftdi); | |
597 | work_delay_in_msec = 250; | |
598 | } else { | |
599 | dev_err(&ftdi->udev->dev, "PCI device has disappeared\n" | |
600 | ); | |
601 | ftdi_elan_cancel_targets(ftdi); | |
602 | work_delay_in_msec = 500; | |
603 | ftdi->enumerated = 0; | |
604 | ftdi->initialized = 0; | |
605 | } | |
606 | } | |
607 | if (ftdi->disconnected > 0) { | |
608 | ftdi_elan_put_kref(ftdi); | |
609 | return; | |
610 | } else { | |
611 | ftdi_status_requeue_work(ftdi, | |
612 | msecs_to_jiffies(work_delay_in_msec)); | |
613 | return; | |
614 | } | |
615 | } | |
616 | ||
617 | ||
618 | /* | |
619 | * file_operations for the jtag interface | |
620 | * | |
621 | * the usage count for the device is incremented on open() | |
622 | * and decremented on release() | |
623 | */ | |
624 | static int ftdi_elan_open(struct inode *inode, struct file *file) | |
625 | { | |
86266452 ON |
626 | int subminor; |
627 | struct usb_interface *interface; | |
628 | ||
86266452 ON |
629 | subminor = iminor(inode); |
630 | interface = usb_find_interface(&ftdi_elan_driver, subminor); | |
631 | ||
a5c66e4b TO |
632 | if (!interface) { |
633 | printk(KERN_ERR "can't find device for minor %d\n", subminor); | |
634 | return -ENODEV; | |
635 | } else { | |
636 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); | |
637 | if (!ftdi) { | |
638 | return -ENODEV; | |
639 | } else { | |
640 | if (down_interruptible(&ftdi->sw_lock)) { | |
641 | return -EINTR; | |
642 | } else { | |
643 | ftdi_elan_get_kref(ftdi); | |
644 | file->private_data = ftdi; | |
645 | return 0; | |
646 | } | |
647 | } | |
648 | } | |
649 | } | |
650 | ||
651 | static int ftdi_elan_release(struct inode *inode, struct file *file) | |
652 | { | |
653 | struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data; | |
654 | if (ftdi == NULL) | |
655 | return -ENODEV; | |
656 | up(&ftdi->sw_lock); /* decrement the count on our device */ | |
657 | ftdi_elan_put_kref(ftdi); | |
658 | return 0; | |
659 | } | |
660 | ||
661 | ||
a5c66e4b TO |
662 | /* |
663 | * | |
664 | * blocking bulk reads are used to get data from the device | |
665 | * | |
666 | */ | |
667 | static ssize_t ftdi_elan_read(struct file *file, char __user *buffer, | |
668 | size_t count, loff_t *ppos) | |
669 | { | |
670 | char data[30 *3 + 4]; | |
671 | char *d = data; | |
672 | int m = (sizeof(data) - 1) / 3; | |
673 | int bytes_read = 0; | |
674 | int retry_on_empty = 10; | |
675 | int retry_on_timeout = 5; | |
676 | struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data; | |
677 | if (ftdi->disconnected > 0) { | |
678 | return -ENODEV; | |
679 | } | |
680 | data[0] = 0; | |
681 | have:if (ftdi->bulk_in_left > 0) { | |
682 | if (count-- > 0) { | |
683 | char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer; | |
684 | ftdi->bulk_in_left -= 1; | |
685 | if (bytes_read < m) { | |
686 | d += sprintf(d, " %02X", 0x000000FF & *p); | |
687 | } else if (bytes_read > m) { | |
688 | } else | |
689 | d += sprintf(d, " .."); | |
690 | if (copy_to_user(buffer++, p, 1)) { | |
691 | return -EFAULT; | |
692 | } else { | |
693 | bytes_read += 1; | |
694 | goto have; | |
695 | } | |
696 | } else | |
697 | return bytes_read; | |
698 | } | |
699 | more:if (count > 0) { | |
700 | int packet_bytes = 0; | |
701 | int retval = usb_bulk_msg(ftdi->udev, | |
702 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
703 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
c0f082c5 | 704 | &packet_bytes, 50); |
a5c66e4b TO |
705 | if (packet_bytes > 2) { |
706 | ftdi->bulk_in_left = packet_bytes - 2; | |
707 | ftdi->bulk_in_last = 1; | |
708 | goto have; | |
709 | } else if (retval == -ETIMEDOUT) { | |
710 | if (retry_on_timeout-- > 0) { | |
711 | goto more; | |
712 | } else if (bytes_read > 0) { | |
713 | return bytes_read; | |
714 | } else | |
715 | return retval; | |
716 | } else if (retval == 0) { | |
717 | if (retry_on_empty-- > 0) { | |
718 | goto more; | |
719 | } else | |
720 | return bytes_read; | |
721 | } else | |
722 | return retval; | |
723 | } else | |
724 | return bytes_read; | |
725 | } | |
726 | ||
7d12e780 | 727 | static void ftdi_elan_write_bulk_callback(struct urb *urb) |
a5c66e4b | 728 | { |
cdc97792 | 729 | struct usb_ftdi *ftdi = urb->context; |
84346269 GKH |
730 | int status = urb->status; |
731 | ||
732 | if (status && !(status == -ENOENT || status == -ECONNRESET || | |
733 | status == -ESHUTDOWN)) { | |
a5c66e4b | 734 | dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %" |
84346269 | 735 | "d\n", urb, status); |
a5c66e4b | 736 | } |
997ea58e | 737 | usb_free_coherent(urb->dev, urb->transfer_buffer_length, |
a5c66e4b TO |
738 | urb->transfer_buffer, urb->transfer_dma); |
739 | } | |
740 | ||
741 | static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi, | |
742 | char *buf, int command_size, int total_size) | |
743 | { | |
744 | int ed_commands = 0; | |
745 | int b = 0; | |
746 | int I = command_size; | |
747 | int i = ftdi->command_head; | |
748 | while (I-- > 0) { | |
749 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
750 | i++]; | |
751 | int F = command->follows; | |
752 | u8 *f = command->buffer; | |
753 | if (command->header & 0x80) { | |
754 | ed_commands |= 1 << (0x3 & (command->header >> 5)); | |
755 | } | |
756 | buf[b++] = command->header; | |
757 | buf[b++] = (command->length >> 0) & 0x00FF; | |
758 | buf[b++] = (command->length >> 8) & 0x00FF; | |
759 | buf[b++] = command->address; | |
760 | buf[b++] = command->width; | |
761 | while (F-- > 0) { | |
762 | buf[b++] = *f++; | |
763 | } | |
764 | } | |
765 | return ed_commands; | |
766 | } | |
767 | ||
768 | static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size) | |
769 | { | |
770 | int total_size = 0; | |
771 | int I = command_size; | |
772 | int i = ftdi->command_head; | |
773 | while (I-- > 0) { | |
774 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
775 | i++]; | |
776 | total_size += 5 + command->follows; | |
777 | } return total_size; | |
778 | } | |
779 | ||
780 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) | |
781 | { | |
782 | int retval; | |
783 | char *buf; | |
784 | int ed_commands; | |
785 | int total_size; | |
786 | struct urb *urb; | |
787 | int command_size = ftdi->command_next - ftdi->command_head; | |
788 | if (command_size == 0) | |
789 | return 0; | |
790 | total_size = ftdi_elan_total_command_size(ftdi, command_size); | |
791 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
792 | if (!urb) { | |
793 | dev_err(&ftdi->udev->dev, "could not get a urb to write %d comm" | |
794 | "ands totaling %d bytes to the Uxxx\n", command_size, | |
795 | total_size); | |
796 | return -ENOMEM; | |
797 | } | |
997ea58e | 798 | buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL, |
a5c66e4b TO |
799 | &urb->transfer_dma); |
800 | if (!buf) { | |
801 | dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c" | |
802 | "ommands totaling %d bytes to the Uxxx\n", command_size, | |
803 | total_size); | |
804 | usb_free_urb(urb); | |
805 | return -ENOMEM; | |
806 | } | |
807 | ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf, | |
808 | command_size, total_size); | |
809 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
810 | ftdi->bulk_out_endpointAddr), buf, total_size, | |
811 | ftdi_elan_write_bulk_callback, ftdi); | |
812 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
813 | if (ed_commands) { | |
814 | char diag[40 *3 + 4]; | |
815 | char *d = diag; | |
816 | int m = total_size; | |
817 | u8 *c = buf; | |
818 | int s = (sizeof(diag) - 1) / 3; | |
819 | diag[0] = 0; | |
820 | while (s-- > 0 && m-- > 0) { | |
821 | if (s > 0 || m == 0) { | |
822 | d += sprintf(d, " %02X", *c++); | |
823 | } else | |
824 | d += sprintf(d, " .."); | |
825 | } | |
826 | } | |
827 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
828 | if (retval) { | |
829 | dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write " | |
830 | "%d commands totaling %d bytes to the Uxxx\n", retval, | |
831 | urb, command_size, total_size); | |
997ea58e | 832 | usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma); |
a5c66e4b TO |
833 | usb_free_urb(urb); |
834 | return retval; | |
835 | } | |
836 | usb_free_urb(urb); /* release our reference to this urb, | |
837 | the USB core will eventually free it entirely */ | |
838 | ftdi->command_head += command_size; | |
839 | ftdi_elan_kick_respond_queue(ftdi); | |
840 | return 0; | |
841 | } | |
842 | ||
843 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
844 | struct u132_target *target, u8 *buffer, int length) | |
845 | { | |
846 | struct urb *urb = target->urb; | |
847 | int halted = target->halted; | |
848 | int skipped = target->skipped; | |
849 | int actual = target->actual; | |
850 | int non_null = target->non_null; | |
851 | int toggle_bits = target->toggle_bits; | |
852 | int error_count = target->error_count; | |
853 | int condition_code = target->condition_code; | |
854 | int repeat_number = target->repeat_number; | |
855 | void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int, | |
856 | int, int, int, int) = target->callback; | |
857 | target->active -= 1; | |
858 | target->callback = NULL; | |
859 | (*callback) (target->endp, urb, buffer, length, toggle_bits, | |
860 | error_count, condition_code, repeat_number, halted, skipped, | |
861 | actual, non_null); | |
862 | } | |
863 | ||
864 | static char *have_ed_set_response(struct usb_ftdi *ftdi, | |
865 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, | |
866 | char *b) | |
867 | { | |
868 | int payload = (ed_length >> 0) & 0x07FF; | |
c93d4650 | 869 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
870 | target->actual = 0; |
871 | target->non_null = (ed_length >> 15) & 0x0001; | |
872 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
873 | if (ed_type == 0x02) { | |
874 | if (payload == 0 || target->abandoning > 0) { | |
875 | target->abandoning = 0; | |
c93d4650 | 876 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
877 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, |
878 | payload); | |
879 | ftdi->recieved = 0; | |
880 | ftdi->expected = 4; | |
881 | ftdi->ed_found = 0; | |
882 | return ftdi->response; | |
883 | } else { | |
884 | ftdi->expected = 4 + payload; | |
885 | ftdi->ed_found = 1; | |
c93d4650 | 886 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
887 | return b; |
888 | } | |
889 | } else if (ed_type == 0x03) { | |
890 | if (payload == 0 || target->abandoning > 0) { | |
891 | target->abandoning = 0; | |
c93d4650 | 892 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
893 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, |
894 | payload); | |
895 | ftdi->recieved = 0; | |
896 | ftdi->expected = 4; | |
897 | ftdi->ed_found = 0; | |
898 | return ftdi->response; | |
899 | } else { | |
900 | ftdi->expected = 4 + payload; | |
901 | ftdi->ed_found = 1; | |
c93d4650 | 902 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
903 | return b; |
904 | } | |
905 | } else if (ed_type == 0x01) { | |
906 | target->abandoning = 0; | |
c93d4650 | 907 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
908 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, |
909 | payload); | |
910 | ftdi->recieved = 0; | |
911 | ftdi->expected = 4; | |
912 | ftdi->ed_found = 0; | |
913 | return ftdi->response; | |
914 | } else { | |
915 | target->abandoning = 0; | |
c93d4650 | 916 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
917 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, |
918 | payload); | |
919 | ftdi->recieved = 0; | |
920 | ftdi->expected = 4; | |
921 | ftdi->ed_found = 0; | |
922 | return ftdi->response; | |
923 | } | |
924 | } | |
925 | ||
926 | static char *have_ed_get_response(struct usb_ftdi *ftdi, | |
927 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, | |
928 | char *b) | |
929 | { | |
c93d4650 | 930 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
931 | target->condition_code = TD_DEVNOTRESP; |
932 | target->actual = (ed_length >> 0) & 0x01FF; | |
933 | target->non_null = (ed_length >> 15) & 0x0001; | |
934 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
c93d4650 | 935 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
936 | if (target->active) |
937 | ftdi_elan_do_callback(ftdi, target, NULL, 0); | |
938 | target->abandoning = 0; | |
939 | ftdi->recieved = 0; | |
940 | ftdi->expected = 4; | |
941 | ftdi->ed_found = 0; | |
942 | return ftdi->response; | |
943 | } | |
944 | ||
945 | ||
946 | /* | |
947 | * The engine tries to empty the FTDI fifo | |
948 | * | |
949 | * all responses found in the fifo data are dispatched thus | |
950 | * the response buffer can only ever hold a maximum sized | |
951 | * response from the Uxxx. | |
952 | * | |
953 | */ | |
954 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi) | |
955 | { | |
956 | u8 *b = ftdi->response + ftdi->recieved; | |
957 | int bytes_read = 0; | |
958 | int retry_on_empty = 1; | |
959 | int retry_on_timeout = 3; | |
960 | int empty_packets = 0; | |
961 | read:{ | |
962 | int packet_bytes = 0; | |
963 | int retval = usb_bulk_msg(ftdi->udev, | |
964 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
965 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
c0f082c5 | 966 | &packet_bytes, 500); |
a5c66e4b TO |
967 | char diag[30 *3 + 4]; |
968 | char *d = diag; | |
969 | int m = packet_bytes; | |
970 | u8 *c = ftdi->bulk_in_buffer; | |
971 | int s = (sizeof(diag) - 1) / 3; | |
972 | diag[0] = 0; | |
973 | while (s-- > 0 && m-- > 0) { | |
974 | if (s > 0 || m == 0) { | |
975 | d += sprintf(d, " %02X", *c++); | |
976 | } else | |
977 | d += sprintf(d, " .."); | |
978 | } | |
979 | if (packet_bytes > 2) { | |
980 | ftdi->bulk_in_left = packet_bytes - 2; | |
981 | ftdi->bulk_in_last = 1; | |
982 | goto have; | |
983 | } else if (retval == -ETIMEDOUT) { | |
984 | if (retry_on_timeout-- > 0) { | |
985 | dev_err(&ftdi->udev->dev, "TIMED OUT with packe" | |
986 | "t_bytes = %d with total %d bytes%s\n", | |
987 | packet_bytes, bytes_read, diag); | |
988 | goto more; | |
989 | } else if (bytes_read > 0) { | |
990 | dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n", | |
991 | bytes_read, diag); | |
992 | return -ENOMEM; | |
993 | } else { | |
994 | dev_err(&ftdi->udev->dev, "TIMED OUT with packe" | |
995 | "t_bytes = %d with total %d bytes%s\n", | |
996 | packet_bytes, bytes_read, diag); | |
997 | return -ENOMEM; | |
998 | } | |
999 | } else if (retval == -EILSEQ) { | |
1000 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes" | |
1001 | " = %d with total %d bytes%s\n", retval, | |
1002 | packet_bytes, bytes_read, diag); | |
1003 | return retval; | |
1004 | } else if (retval) { | |
1005 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes" | |
1006 | " = %d with total %d bytes%s\n", retval, | |
1007 | packet_bytes, bytes_read, diag); | |
1008 | return retval; | |
1009 | } else if (packet_bytes == 2) { | |
1010 | unsigned char s0 = ftdi->bulk_in_buffer[0]; | |
1011 | unsigned char s1 = ftdi->bulk_in_buffer[1]; | |
1012 | empty_packets += 1; | |
1013 | if (s0 == 0x31 && s1 == 0x60) { | |
1014 | if (retry_on_empty-- > 0) { | |
1015 | goto more; | |
1016 | } else | |
1017 | return 0; | |
1018 | } else if (s0 == 0x31 && s1 == 0x00) { | |
1019 | if (retry_on_empty-- > 0) { | |
1020 | goto more; | |
1021 | } else | |
1022 | return 0; | |
1023 | } else { | |
1024 | if (retry_on_empty-- > 0) { | |
1025 | goto more; | |
1026 | } else | |
1027 | return 0; | |
1028 | } | |
1029 | } else if (packet_bytes == 1) { | |
1030 | if (retry_on_empty-- > 0) { | |
1031 | goto more; | |
1032 | } else | |
1033 | return 0; | |
1034 | } else { | |
1035 | if (retry_on_empty-- > 0) { | |
1036 | goto more; | |
1037 | } else | |
1038 | return 0; | |
1039 | } | |
1040 | } | |
1041 | more:{ | |
1042 | goto read; | |
1043 | } | |
1044 | have:if (ftdi->bulk_in_left > 0) { | |
1045 | u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last]; | |
1046 | bytes_read += 1; | |
1047 | ftdi->bulk_in_left -= 1; | |
1048 | if (ftdi->recieved == 0 && c == 0xFF) { | |
1049 | goto have; | |
1050 | } else | |
1051 | *b++ = c; | |
1052 | if (++ftdi->recieved < ftdi->expected) { | |
1053 | goto have; | |
1054 | } else if (ftdi->ed_found) { | |
1055 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1056 | u16 ed_length = (ftdi->response[2] << 8) | | |
1057 | ftdi->response[1]; | |
1058 | struct u132_target *target = &ftdi->target[ed_number]; | |
1059 | int payload = (ed_length >> 0) & 0x07FF; | |
1060 | char diag[30 *3 + 4]; | |
1061 | char *d = diag; | |
1062 | int m = payload; | |
1063 | u8 *c = 4 + ftdi->response; | |
1064 | int s = (sizeof(diag) - 1) / 3; | |
1065 | diag[0] = 0; | |
1066 | while (s-- > 0 && m-- > 0) { | |
1067 | if (s > 0 || m == 0) { | |
1068 | d += sprintf(d, " %02X", *c++); | |
1069 | } else | |
1070 | d += sprintf(d, " .."); | |
1071 | } | |
1072 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
1073 | payload); | |
1074 | ftdi->recieved = 0; | |
1075 | ftdi->expected = 4; | |
1076 | ftdi->ed_found = 0; | |
1077 | b = ftdi->response; | |
1078 | goto have; | |
1079 | } else if (ftdi->expected == 8) { | |
1080 | u8 buscmd; | |
1081 | int respond_head = ftdi->respond_head++; | |
1082 | struct u132_respond *respond = &ftdi->respond[ | |
1083 | RESPOND_MASK & respond_head]; | |
1084 | u32 data = ftdi->response[7]; | |
1085 | data <<= 8; | |
1086 | data |= ftdi->response[6]; | |
1087 | data <<= 8; | |
1088 | data |= ftdi->response[5]; | |
1089 | data <<= 8; | |
1090 | data |= ftdi->response[4]; | |
1091 | *respond->value = data; | |
1092 | *respond->result = 0; | |
1093 | complete(&respond->wait_completion); | |
1094 | ftdi->recieved = 0; | |
1095 | ftdi->expected = 4; | |
1096 | ftdi->ed_found = 0; | |
1097 | b = ftdi->response; | |
1098 | buscmd = (ftdi->response[0] >> 0) & 0x0F; | |
1099 | if (buscmd == 0x00) { | |
1100 | } else if (buscmd == 0x02) { | |
1101 | } else if (buscmd == 0x06) { | |
1102 | } else if (buscmd == 0x0A) { | |
1103 | } else | |
1104 | dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) va" | |
1105 | "lue = %08X\n", buscmd, data); | |
1106 | goto have; | |
1107 | } else { | |
1108 | if ((ftdi->response[0] & 0x80) == 0x00) { | |
1109 | ftdi->expected = 8; | |
1110 | goto have; | |
1111 | } else { | |
1112 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1113 | int ed_type = (ftdi->response[0] >> 0) & 0x03; | |
1114 | u16 ed_length = (ftdi->response[2] << 8) | | |
1115 | ftdi->response[1]; | |
1116 | struct u132_target *target = &ftdi->target[ | |
1117 | ed_number]; | |
1118 | target->halted = (ftdi->response[0] >> 3) & | |
1119 | 0x01; | |
1120 | target->skipped = (ftdi->response[0] >> 2) & | |
1121 | 0x01; | |
1122 | target->toggle_bits = (ftdi->response[3] >> 6) | |
1123 | & 0x03; | |
1124 | target->error_count = (ftdi->response[3] >> 4) | |
1125 | & 0x03; | |
1126 | target->condition_code = (ftdi->response[ | |
1127 | 3] >> 0) & 0x0F; | |
1128 | if ((ftdi->response[0] & 0x10) == 0x00) { | |
1129 | b = have_ed_set_response(ftdi, target, | |
1130 | ed_length, ed_number, ed_type, | |
1131 | b); | |
1132 | goto have; | |
1133 | } else { | |
1134 | b = have_ed_get_response(ftdi, target, | |
1135 | ed_length, ed_number, ed_type, | |
1136 | b); | |
1137 | goto have; | |
1138 | } | |
1139 | } | |
1140 | } | |
1141 | } else | |
1142 | goto more; | |
1143 | } | |
1144 | ||
1145 | ||
1146 | /* | |
1147 | * create a urb, and a buffer for it, and copy the data to the urb | |
1148 | * | |
1149 | */ | |
1150 | static ssize_t ftdi_elan_write(struct file *file, | |
1151 | const char __user *user_buffer, size_t count, | |
1152 | loff_t *ppos) | |
1153 | { | |
1154 | int retval = 0; | |
1155 | struct urb *urb; | |
1156 | char *buf; | |
96a51892 GKH |
1157 | struct usb_ftdi *ftdi = file->private_data; |
1158 | ||
a5c66e4b TO |
1159 | if (ftdi->disconnected > 0) { |
1160 | return -ENODEV; | |
1161 | } | |
1162 | if (count == 0) { | |
1163 | goto exit; | |
1164 | } | |
1165 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1166 | if (!urb) { | |
1167 | retval = -ENOMEM; | |
1168 | goto error_1; | |
1169 | } | |
997ea58e | 1170 | buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL, |
a5c66e4b TO |
1171 | &urb->transfer_dma); |
1172 | if (!buf) { | |
1173 | retval = -ENOMEM; | |
1174 | goto error_2; | |
1175 | } | |
1176 | if (copy_from_user(buf, user_buffer, count)) { | |
1177 | retval = -EFAULT; | |
1178 | goto error_3; | |
1179 | } | |
1180 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
1181 | ftdi->bulk_out_endpointAddr), buf, count, | |
1182 | ftdi_elan_write_bulk_callback, ftdi); | |
1183 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1184 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1185 | if (retval) { | |
1186 | dev_err(&ftdi->udev->dev, "failed submitting write urb, error %" | |
1187 | "d\n", retval); | |
96a51892 | 1188 | goto error_3; |
a5c66e4b TO |
1189 | } |
1190 | usb_free_urb(urb); | |
96a51892 GKH |
1191 | |
1192 | exit: | |
a5c66e4b | 1193 | return count; |
96a51892 | 1194 | error_3: |
997ea58e | 1195 | usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma); |
96a51892 GKH |
1196 | error_2: |
1197 | usb_free_urb(urb); | |
1198 | error_1: | |
1199 | return retval; | |
a5c66e4b TO |
1200 | } |
1201 | ||
00977a59 | 1202 | static const struct file_operations ftdi_elan_fops = { |
a5c66e4b TO |
1203 | .owner = THIS_MODULE, |
1204 | .llseek = no_llseek, | |
a5c66e4b TO |
1205 | .read = ftdi_elan_read, |
1206 | .write = ftdi_elan_write, | |
1207 | .open = ftdi_elan_open, | |
1208 | .release = ftdi_elan_release, | |
1209 | }; | |
1210 | ||
1211 | /* | |
1212 | * usb class driver info in order to get a minor number from the usb core, | |
1213 | * and to have the device registered with the driver core | |
1214 | */ | |
1215 | static struct usb_class_driver ftdi_elan_jtag_class = { | |
1216 | .name = "ftdi-%d-jtag", | |
1217 | .fops = &ftdi_elan_fops, | |
1218 | .minor_base = USB_FTDI_ELAN_MINOR_BASE, | |
1219 | }; | |
1220 | ||
1221 | /* | |
1222 | * the following definitions are for the | |
1223 | * ELAN FPGA state machgine processor that | |
1224 | * lies on the other side of the FTDI chip | |
1225 | */ | |
1226 | #define cPCIu132rd 0x0 | |
1227 | #define cPCIu132wr 0x1 | |
1228 | #define cPCIiord 0x2 | |
1229 | #define cPCIiowr 0x3 | |
1230 | #define cPCImemrd 0x6 | |
1231 | #define cPCImemwr 0x7 | |
1232 | #define cPCIcfgrd 0xA | |
1233 | #define cPCIcfgwr 0xB | |
1234 | #define cPCInull 0xF | |
1235 | #define cU132cmd_status 0x0 | |
1236 | #define cU132flash 0x1 | |
1237 | #define cPIDsetup 0x0 | |
1238 | #define cPIDout 0x1 | |
1239 | #define cPIDin 0x2 | |
1240 | #define cPIDinonce 0x3 | |
1241 | #define cCCnoerror 0x0 | |
1242 | #define cCCcrc 0x1 | |
1243 | #define cCCbitstuff 0x2 | |
1244 | #define cCCtoggle 0x3 | |
1245 | #define cCCstall 0x4 | |
1246 | #define cCCnoresp 0x5 | |
1247 | #define cCCbadpid1 0x6 | |
1248 | #define cCCbadpid2 0x7 | |
1249 | #define cCCdataoverrun 0x8 | |
1250 | #define cCCdataunderrun 0x9 | |
1251 | #define cCCbuffoverrun 0xC | |
1252 | #define cCCbuffunderrun 0xD | |
1253 | #define cCCnotaccessed 0xF | |
1254 | static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data) | |
1255 | { | |
1256 | wait:if (ftdi->disconnected > 0) { | |
1257 | return -ENODEV; | |
1258 | } else { | |
1259 | int command_size; | |
c93d4650 | 1260 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1261 | command_size = ftdi->command_next - ftdi->command_head; |
1262 | if (command_size < COMMAND_SIZE) { | |
1263 | struct u132_command *command = &ftdi->command[ | |
1264 | COMMAND_MASK & ftdi->command_next]; | |
1265 | command->header = 0x00 | cPCIu132wr; | |
1266 | command->length = 0x04; | |
1267 | command->address = 0x00; | |
1268 | command->width = 0x00; | |
1269 | command->follows = 4; | |
1270 | command->value = data; | |
1271 | command->buffer = &command->value; | |
1272 | ftdi->command_next += 1; | |
1273 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1274 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1275 | return 0; |
1276 | } else { | |
c93d4650 | 1277 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1278 | msleep(100); |
1279 | goto wait; | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset, | |
1285 | u8 width, u32 data) | |
1286 | { | |
1287 | u8 addressofs = config_offset / 4; | |
1288 | wait:if (ftdi->disconnected > 0) { | |
1289 | return -ENODEV; | |
1290 | } else { | |
1291 | int command_size; | |
c93d4650 | 1292 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1293 | command_size = ftdi->command_next - ftdi->command_head; |
1294 | if (command_size < COMMAND_SIZE) { | |
1295 | struct u132_command *command = &ftdi->command[ | |
1296 | COMMAND_MASK & ftdi->command_next]; | |
1297 | command->header = 0x00 | (cPCIcfgwr & 0x0F); | |
1298 | command->length = 0x04; | |
1299 | command->address = addressofs; | |
1300 | command->width = 0x00 | (width & 0x0F); | |
1301 | command->follows = 4; | |
1302 | command->value = data; | |
1303 | command->buffer = &command->value; | |
1304 | ftdi->command_next += 1; | |
1305 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1306 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1307 | return 0; |
1308 | } else { | |
c93d4650 | 1309 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1310 | msleep(100); |
1311 | goto wait; | |
1312 | } | |
1313 | } | |
1314 | } | |
1315 | ||
1316 | static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
1317 | u8 width, u32 data) | |
1318 | { | |
1319 | u8 addressofs = mem_offset / 4; | |
1320 | wait:if (ftdi->disconnected > 0) { | |
1321 | return -ENODEV; | |
1322 | } else { | |
1323 | int command_size; | |
c93d4650 | 1324 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1325 | command_size = ftdi->command_next - ftdi->command_head; |
1326 | if (command_size < COMMAND_SIZE) { | |
1327 | struct u132_command *command = &ftdi->command[ | |
1328 | COMMAND_MASK & ftdi->command_next]; | |
1329 | command->header = 0x00 | (cPCImemwr & 0x0F); | |
1330 | command->length = 0x04; | |
1331 | command->address = addressofs; | |
1332 | command->width = 0x00 | (width & 0x0F); | |
1333 | command->follows = 4; | |
1334 | command->value = data; | |
1335 | command->buffer = &command->value; | |
1336 | ftdi->command_next += 1; | |
1337 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1338 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1339 | return 0; |
1340 | } else { | |
c93d4650 | 1341 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1342 | msleep(100); |
1343 | goto wait; | |
1344 | } | |
1345 | } | |
1346 | } | |
1347 | ||
1348 | int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset, | |
1349 | u8 width, u32 data) | |
1350 | { | |
1351 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1352 | return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data); | |
1353 | } | |
1354 | ||
1355 | ||
1356 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem); | |
1357 | static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data) | |
1358 | { | |
1359 | wait:if (ftdi->disconnected > 0) { | |
1360 | return -ENODEV; | |
1361 | } else { | |
1362 | int command_size; | |
1363 | int respond_size; | |
c93d4650 | 1364 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1365 | command_size = ftdi->command_next - ftdi->command_head; |
1366 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1367 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1368 | { | |
1369 | struct u132_command *command = &ftdi->command[ | |
1370 | COMMAND_MASK & ftdi->command_next]; | |
1371 | struct u132_respond *respond = &ftdi->respond[ | |
1372 | RESPOND_MASK & ftdi->respond_next]; | |
1373 | int result = -ENODEV; | |
1374 | respond->result = &result; | |
1375 | respond->header = command->header = 0x00 | cPCIu132rd; | |
1376 | command->length = 0x04; | |
1377 | respond->address = command->address = cU132cmd_status; | |
1378 | command->width = 0x00; | |
1379 | command->follows = 0; | |
1380 | command->value = 0; | |
1381 | command->buffer = NULL; | |
1382 | respond->value = data; | |
1383 | init_completion(&respond->wait_completion); | |
1384 | ftdi->command_next += 1; | |
1385 | ftdi->respond_next += 1; | |
1386 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1387 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1388 | wait_for_completion(&respond->wait_completion); |
1389 | return result; | |
1390 | } else { | |
c93d4650 | 1391 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1392 | msleep(100); |
1393 | goto wait; | |
1394 | } | |
1395 | } | |
1396 | } | |
1397 | ||
a5c66e4b TO |
1398 | static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset, |
1399 | u8 width, u32 *data) | |
1400 | { | |
1401 | u8 addressofs = config_offset / 4; | |
1402 | wait:if (ftdi->disconnected > 0) { | |
1403 | return -ENODEV; | |
1404 | } else { | |
1405 | int command_size; | |
1406 | int respond_size; | |
c93d4650 | 1407 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1408 | command_size = ftdi->command_next - ftdi->command_head; |
1409 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1410 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1411 | { | |
1412 | struct u132_command *command = &ftdi->command[ | |
1413 | COMMAND_MASK & ftdi->command_next]; | |
1414 | struct u132_respond *respond = &ftdi->respond[ | |
1415 | RESPOND_MASK & ftdi->respond_next]; | |
1416 | int result = -ENODEV; | |
1417 | respond->result = &result; | |
1418 | respond->header = command->header = 0x00 | (cPCIcfgrd & | |
1419 | 0x0F); | |
1420 | command->length = 0x04; | |
1421 | respond->address = command->address = addressofs; | |
1422 | command->width = 0x00 | (width & 0x0F); | |
1423 | command->follows = 0; | |
1424 | command->value = 0; | |
1425 | command->buffer = NULL; | |
1426 | respond->value = data; | |
1427 | init_completion(&respond->wait_completion); | |
1428 | ftdi->command_next += 1; | |
1429 | ftdi->respond_next += 1; | |
1430 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1431 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1432 | wait_for_completion(&respond->wait_completion); |
1433 | return result; | |
1434 | } else { | |
c93d4650 | 1435 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1436 | msleep(100); |
1437 | goto wait; | |
1438 | } | |
1439 | } | |
1440 | } | |
1441 | ||
1442 | static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
1443 | u8 width, u32 *data) | |
1444 | { | |
1445 | u8 addressofs = mem_offset / 4; | |
1446 | wait:if (ftdi->disconnected > 0) { | |
1447 | return -ENODEV; | |
1448 | } else { | |
1449 | int command_size; | |
1450 | int respond_size; | |
c93d4650 | 1451 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1452 | command_size = ftdi->command_next - ftdi->command_head; |
1453 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1454 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1455 | { | |
1456 | struct u132_command *command = &ftdi->command[ | |
1457 | COMMAND_MASK & ftdi->command_next]; | |
1458 | struct u132_respond *respond = &ftdi->respond[ | |
1459 | RESPOND_MASK & ftdi->respond_next]; | |
1460 | int result = -ENODEV; | |
1461 | respond->result = &result; | |
1462 | respond->header = command->header = 0x00 | (cPCImemrd & | |
1463 | 0x0F); | |
1464 | command->length = 0x04; | |
1465 | respond->address = command->address = addressofs; | |
1466 | command->width = 0x00 | (width & 0x0F); | |
1467 | command->follows = 0; | |
1468 | command->value = 0; | |
1469 | command->buffer = NULL; | |
1470 | respond->value = data; | |
1471 | init_completion(&respond->wait_completion); | |
1472 | ftdi->command_next += 1; | |
1473 | ftdi->respond_next += 1; | |
1474 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1475 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1476 | wait_for_completion(&respond->wait_completion); |
1477 | return result; | |
1478 | } else { | |
c93d4650 | 1479 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1480 | msleep(100); |
1481 | goto wait; | |
1482 | } | |
1483 | } | |
1484 | } | |
1485 | ||
1486 | int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset, | |
1487 | u8 width, u32 *data) | |
1488 | { | |
1489 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1490 | if (ftdi->initialized == 0) { | |
1491 | return -ENODEV; | |
1492 | } else | |
1493 | return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data); | |
1494 | } | |
1495 | ||
1496 | ||
1497 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem); | |
1498 | static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number, | |
1499 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1500 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1501 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1502 | int halted, int skipped, int actual, int non_null)) | |
1503 | { | |
1504 | u8 ed = ed_number - 1; | |
1505 | wait:if (ftdi->disconnected > 0) { | |
1506 | return -ENODEV; | |
1507 | } else if (ftdi->initialized == 0) { | |
1508 | return -ENODEV; | |
1509 | } else { | |
1510 | int command_size; | |
c93d4650 | 1511 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1512 | command_size = ftdi->command_next - ftdi->command_head; |
1513 | if (command_size < COMMAND_SIZE) { | |
1514 | struct u132_target *target = &ftdi->target[ed]; | |
1515 | struct u132_command *command = &ftdi->command[ | |
1516 | COMMAND_MASK & ftdi->command_next]; | |
1517 | command->header = 0x80 | (ed << 5); | |
1518 | command->length = 0x8007; | |
1519 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1520 | | (address << 0); | |
1521 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1522 | usb_pipeout(urb->pipe)); | |
1523 | command->follows = 8; | |
1524 | command->value = 0; | |
1525 | command->buffer = urb->setup_packet; | |
1526 | target->callback = callback; | |
1527 | target->endp = endp; | |
1528 | target->urb = urb; | |
1529 | target->active = 1; | |
1530 | ftdi->command_next += 1; | |
1531 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1532 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1533 | return 0; |
1534 | } else { | |
c93d4650 | 1535 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1536 | msleep(100); |
1537 | goto wait; | |
1538 | } | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number, | |
1543 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1544 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1545 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1546 | int halted, int skipped, int actual, int non_null)) | |
1547 | { | |
1548 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1549 | return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address, | |
1550 | ep_number, toggle_bits, callback); | |
1551 | } | |
1552 | ||
1553 | ||
1554 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup); | |
1555 | static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number, | |
1556 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1557 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1558 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1559 | int halted, int skipped, int actual, int non_null)) | |
1560 | { | |
1561 | u8 ed = ed_number - 1; | |
1562 | wait:if (ftdi->disconnected > 0) { | |
1563 | return -ENODEV; | |
1564 | } else if (ftdi->initialized == 0) { | |
1565 | return -ENODEV; | |
1566 | } else { | |
1567 | int command_size; | |
c93d4650 | 1568 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1569 | command_size = ftdi->command_next - ftdi->command_head; |
1570 | if (command_size < COMMAND_SIZE) { | |
1571 | struct u132_target *target = &ftdi->target[ed]; | |
1572 | struct u132_command *command = &ftdi->command[ | |
1573 | COMMAND_MASK & ftdi->command_next]; | |
16e2e5f6 | 1574 | u32 remaining_length = urb->transfer_buffer_length - |
a5c66e4b TO |
1575 | urb->actual_length; |
1576 | command->header = 0x82 | (ed << 5); | |
1577 | if (remaining_length == 0) { | |
1578 | command->length = 0x0000; | |
1579 | } else if (remaining_length > 1024) { | |
1580 | command->length = 0x8000 | 1023; | |
1581 | } else | |
1582 | command->length = 0x8000 | (remaining_length - | |
1583 | 1); | |
1584 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1585 | | (address << 0); | |
1586 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1587 | usb_pipeout(urb->pipe)); | |
1588 | command->follows = 0; | |
1589 | command->value = 0; | |
1590 | command->buffer = NULL; | |
1591 | target->callback = callback; | |
1592 | target->endp = endp; | |
1593 | target->urb = urb; | |
1594 | target->active = 1; | |
1595 | ftdi->command_next += 1; | |
1596 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1597 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1598 | return 0; |
1599 | } else { | |
c93d4650 | 1600 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1601 | msleep(100); |
1602 | goto wait; | |
1603 | } | |
1604 | } | |
1605 | } | |
1606 | ||
1607 | int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number, | |
1608 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1609 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1610 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1611 | int halted, int skipped, int actual, int non_null)) | |
1612 | { | |
1613 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1614 | return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address, | |
1615 | ep_number, toggle_bits, callback); | |
1616 | } | |
1617 | ||
1618 | ||
1619 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input); | |
1620 | static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number, | |
1621 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1622 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1623 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1624 | int halted, int skipped, int actual, int non_null)) | |
1625 | { | |
1626 | u8 ed = ed_number - 1; | |
1627 | wait:if (ftdi->disconnected > 0) { | |
1628 | return -ENODEV; | |
1629 | } else if (ftdi->initialized == 0) { | |
1630 | return -ENODEV; | |
1631 | } else { | |
1632 | int command_size; | |
c93d4650 | 1633 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1634 | command_size = ftdi->command_next - ftdi->command_head; |
1635 | if (command_size < COMMAND_SIZE) { | |
1636 | struct u132_target *target = &ftdi->target[ed]; | |
1637 | struct u132_command *command = &ftdi->command[ | |
1638 | COMMAND_MASK & ftdi->command_next]; | |
1639 | command->header = 0x81 | (ed << 5); | |
1640 | command->length = 0x0000; | |
1641 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1642 | | (address << 0); | |
1643 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1644 | usb_pipeout(urb->pipe)); | |
1645 | command->follows = 0; | |
1646 | command->value = 0; | |
1647 | command->buffer = NULL; | |
1648 | target->callback = callback; | |
1649 | target->endp = endp; | |
1650 | target->urb = urb; | |
1651 | target->active = 1; | |
1652 | ftdi->command_next += 1; | |
1653 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1654 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1655 | return 0; |
1656 | } else { | |
c93d4650 | 1657 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1658 | msleep(100); |
1659 | goto wait; | |
1660 | } | |
1661 | } | |
1662 | } | |
1663 | ||
1664 | int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number, | |
1665 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1666 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1667 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1668 | int halted, int skipped, int actual, int non_null)) | |
1669 | { | |
1670 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1671 | return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address, | |
1672 | ep_number, toggle_bits, callback); | |
1673 | } | |
1674 | ||
1675 | ||
1676 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty); | |
1677 | static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number, | |
1678 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1679 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1680 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1681 | int halted, int skipped, int actual, int non_null)) | |
1682 | { | |
1683 | u8 ed = ed_number - 1; | |
1684 | wait:if (ftdi->disconnected > 0) { | |
1685 | return -ENODEV; | |
1686 | } else if (ftdi->initialized == 0) { | |
1687 | return -ENODEV; | |
1688 | } else { | |
1689 | int command_size; | |
c93d4650 | 1690 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1691 | command_size = ftdi->command_next - ftdi->command_head; |
1692 | if (command_size < COMMAND_SIZE) { | |
1693 | u8 *b; | |
1694 | u16 urb_size; | |
1695 | int i = 0; | |
1696 | char data[30 *3 + 4]; | |
1697 | char *d = data; | |
1698 | int m = (sizeof(data) - 1) / 3; | |
1699 | int l = 0; | |
1700 | struct u132_target *target = &ftdi->target[ed]; | |
1701 | struct u132_command *command = &ftdi->command[ | |
1702 | COMMAND_MASK & ftdi->command_next]; | |
1703 | command->header = 0x81 | (ed << 5); | |
1704 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1705 | | (address << 0); | |
1706 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1707 | usb_pipeout(urb->pipe)); | |
16e2e5f6 | 1708 | command->follows = min_t(u32, 1024, |
a5c66e4b TO |
1709 | urb->transfer_buffer_length - |
1710 | urb->actual_length); | |
1711 | command->value = 0; | |
1712 | command->buffer = urb->transfer_buffer + | |
1713 | urb->actual_length; | |
1714 | command->length = 0x8000 | (command->follows - 1); | |
1715 | b = command->buffer; | |
1716 | urb_size = command->follows; | |
1717 | data[0] = 0; | |
1718 | while (urb_size-- > 0) { | |
1719 | if (i > m) { | |
1720 | } else if (i++ < m) { | |
1721 | int w = sprintf(d, " %02X", *b++); | |
1722 | d += w; | |
1723 | l += w; | |
1724 | } else | |
1725 | d += sprintf(d, " .."); | |
1726 | } | |
1727 | target->callback = callback; | |
1728 | target->endp = endp; | |
1729 | target->urb = urb; | |
1730 | target->active = 1; | |
1731 | ftdi->command_next += 1; | |
1732 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1733 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1734 | return 0; |
1735 | } else { | |
c93d4650 | 1736 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1737 | msleep(100); |
1738 | goto wait; | |
1739 | } | |
1740 | } | |
1741 | } | |
1742 | ||
1743 | int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number, | |
1744 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1745 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1746 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1747 | int halted, int skipped, int actual, int non_null)) | |
1748 | { | |
1749 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1750 | return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address, | |
1751 | ep_number, toggle_bits, callback); | |
1752 | } | |
1753 | ||
1754 | ||
1755 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output); | |
1756 | static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number, | |
1757 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1758 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1759 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1760 | int halted, int skipped, int actual, int non_null)) | |
1761 | { | |
1762 | u8 ed = ed_number - 1; | |
1763 | wait:if (ftdi->disconnected > 0) { | |
1764 | return -ENODEV; | |
1765 | } else if (ftdi->initialized == 0) { | |
1766 | return -ENODEV; | |
1767 | } else { | |
1768 | int command_size; | |
c93d4650 | 1769 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1770 | command_size = ftdi->command_next - ftdi->command_head; |
1771 | if (command_size < COMMAND_SIZE) { | |
16e2e5f6 | 1772 | u32 remaining_length = urb->transfer_buffer_length - |
a5c66e4b TO |
1773 | urb->actual_length; |
1774 | struct u132_target *target = &ftdi->target[ed]; | |
1775 | struct u132_command *command = &ftdi->command[ | |
1776 | COMMAND_MASK & ftdi->command_next]; | |
1777 | command->header = 0x83 | (ed << 5); | |
1778 | if (remaining_length == 0) { | |
1779 | command->length = 0x0000; | |
1780 | } else if (remaining_length > 1024) { | |
1781 | command->length = 0x8000 | 1023; | |
1782 | } else | |
1783 | command->length = 0x8000 | (remaining_length - | |
1784 | 1); | |
1785 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1786 | | (address << 0); | |
1787 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1788 | usb_pipeout(urb->pipe)); | |
1789 | command->follows = 0; | |
1790 | command->value = 0; | |
1791 | command->buffer = NULL; | |
1792 | target->callback = callback; | |
1793 | target->endp = endp; | |
1794 | target->urb = urb; | |
1795 | target->active = 1; | |
1796 | ftdi->command_next += 1; | |
1797 | ftdi_elan_kick_command_queue(ftdi); | |
c93d4650 | 1798 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1799 | return 0; |
1800 | } else { | |
c93d4650 | 1801 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1802 | msleep(100); |
1803 | goto wait; | |
1804 | } | |
1805 | } | |
1806 | } | |
1807 | ||
1808 | int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number, | |
1809 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, | |
1810 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1811 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1812 | int halted, int skipped, int actual, int non_null)) | |
1813 | { | |
1814 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1815 | return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address, | |
1816 | ep_number, toggle_bits, callback); | |
1817 | } | |
1818 | ||
1819 | ||
1820 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single); | |
1821 | static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number, | |
1822 | void *endp) | |
1823 | { | |
1824 | u8 ed = ed_number - 1; | |
1825 | if (ftdi->disconnected > 0) { | |
1826 | return -ENODEV; | |
1827 | } else if (ftdi->initialized == 0) { | |
1828 | return -ENODEV; | |
1829 | } else { | |
1830 | struct u132_target *target = &ftdi->target[ed]; | |
c93d4650 | 1831 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b | 1832 | if (target->abandoning > 0) { |
c93d4650 | 1833 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1834 | return 0; |
1835 | } else { | |
1836 | target->abandoning = 1; | |
1837 | wait_1:if (target->active == 1) { | |
1838 | int command_size = ftdi->command_next - | |
1839 | ftdi->command_head; | |
1840 | if (command_size < COMMAND_SIZE) { | |
1841 | struct u132_command *command = | |
1842 | &ftdi->command[COMMAND_MASK & | |
1843 | ftdi->command_next]; | |
1844 | command->header = 0x80 | (ed << 5) | | |
1845 | 0x4; | |
1846 | command->length = 0x00; | |
1847 | command->address = 0x00; | |
1848 | command->width = 0x00; | |
1849 | command->follows = 0; | |
1850 | command->value = 0; | |
1851 | command->buffer = &command->value; | |
1852 | ftdi->command_next += 1; | |
1853 | ftdi_elan_kick_command_queue(ftdi); | |
1854 | } else { | |
c93d4650 | 1855 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b | 1856 | msleep(100); |
c93d4650 | 1857 | mutex_lock(&ftdi->u132_lock); |
a5c66e4b TO |
1858 | goto wait_1; |
1859 | } | |
1860 | } | |
c93d4650 | 1861 | mutex_unlock(&ftdi->u132_lock); |
a5c66e4b TO |
1862 | return 0; |
1863 | } | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number, | |
1868 | void *endp) | |
1869 | { | |
1870 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); | |
1871 | return ftdi_elan_edset_flush(ftdi, ed_number, endp); | |
1872 | } | |
1873 | ||
1874 | ||
1875 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush); | |
1876 | static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi) | |
1877 | { | |
1878 | int retry_on_empty = 10; | |
1879 | int retry_on_timeout = 5; | |
1880 | int retry_on_status = 20; | |
1881 | more:{ | |
1882 | int packet_bytes = 0; | |
1883 | int retval = usb_bulk_msg(ftdi->udev, | |
1884 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
1885 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
c0f082c5 | 1886 | &packet_bytes, 100); |
a5c66e4b TO |
1887 | if (packet_bytes > 2) { |
1888 | char diag[30 *3 + 4]; | |
1889 | char *d = diag; | |
1890 | int m = (sizeof(diag) - 1) / 3; | |
1891 | char *b = ftdi->bulk_in_buffer; | |
1892 | int bytes_read = 0; | |
1893 | diag[0] = 0; | |
1894 | while (packet_bytes-- > 0) { | |
1895 | char c = *b++; | |
1896 | if (bytes_read < m) { | |
1897 | d += sprintf(d, " %02X", | |
1898 | 0x000000FF & c); | |
1899 | } else if (bytes_read > m) { | |
1900 | } else | |
1901 | d += sprintf(d, " .."); | |
1902 | bytes_read += 1; | |
1903 | continue; | |
1904 | } | |
1905 | goto more; | |
1906 | } else if (packet_bytes > 1) { | |
1907 | char s1 = ftdi->bulk_in_buffer[0]; | |
1908 | char s2 = ftdi->bulk_in_buffer[1]; | |
1909 | if (s1 == 0x31 && s2 == 0x60) { | |
1910 | return 0; | |
1911 | } else if (retry_on_status-- > 0) { | |
1912 | goto more; | |
1913 | } else { | |
1914 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
1915 | "imit reached\n"); | |
1916 | return -EFAULT; | |
1917 | } | |
1918 | } else if (packet_bytes > 0) { | |
1919 | char b1 = ftdi->bulk_in_buffer[0]; | |
1920 | dev_err(&ftdi->udev->dev, "only one byte flushed from F" | |
1921 | "TDI = %02X\n", b1); | |
1922 | if (retry_on_status-- > 0) { | |
1923 | goto more; | |
1924 | } else { | |
1925 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
1926 | "imit reached\n"); | |
1927 | return -EFAULT; | |
1928 | } | |
1929 | } else if (retval == -ETIMEDOUT) { | |
1930 | if (retry_on_timeout-- > 0) { | |
1931 | goto more; | |
1932 | } else { | |
1933 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limi" | |
1934 | "t reached\n"); | |
1935 | return -ENOMEM; | |
1936 | } | |
1937 | } else if (retval == 0) { | |
1938 | if (retry_on_empty-- > 0) { | |
1939 | goto more; | |
1940 | } else { | |
1941 | dev_err(&ftdi->udev->dev, "empty packet retry l" | |
1942 | "imit reached\n"); | |
1943 | return -ENOMEM; | |
1944 | } | |
1945 | } else { | |
1946 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
1947 | return retval; | |
1948 | } | |
1949 | } | |
1950 | return -1; | |
1951 | } | |
1952 | ||
1953 | ||
1954 | /* | |
1955 | * send the long flush sequence | |
1956 | * | |
1957 | */ | |
1958 | static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) | |
1959 | { | |
1960 | int retval; | |
1961 | struct urb *urb; | |
1962 | char *buf; | |
1963 | int I = 257; | |
1964 | int i = 0; | |
1965 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1966 | if (!urb) { | |
1967 | dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequ" | |
1968 | "ence\n"); | |
1969 | return -ENOMEM; | |
1970 | } | |
997ea58e | 1971 | buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); |
a5c66e4b TO |
1972 | if (!buf) { |
1973 | dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq" | |
1974 | "uence\n"); | |
1975 | usb_free_urb(urb); | |
1976 | return -ENOMEM; | |
1977 | } | |
1978 | while (I-- > 0) | |
1979 | buf[i++] = 0x55; | |
1980 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
1981 | ftdi->bulk_out_endpointAddr), buf, i, | |
1982 | ftdi_elan_write_bulk_callback, ftdi); | |
1983 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1984 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1985 | if (retval) { | |
1986 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the " | |
1987 | "flush sequence\n"); | |
997ea58e | 1988 | usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); |
a5c66e4b TO |
1989 | usb_free_urb(urb); |
1990 | return -ENOMEM; | |
1991 | } | |
1992 | usb_free_urb(urb); | |
1993 | return 0; | |
1994 | } | |
1995 | ||
1996 | ||
1997 | /* | |
1998 | * send the reset sequence | |
1999 | * | |
2000 | */ | |
2001 | static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) | |
2002 | { | |
2003 | int retval; | |
2004 | struct urb *urb; | |
2005 | char *buf; | |
2006 | int I = 4; | |
2007 | int i = 0; | |
2008 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
2009 | if (!urb) { | |
2010 | dev_err(&ftdi->udev->dev, "could not get a urb for the reset se" | |
2011 | "quence\n"); | |
2012 | return -ENOMEM; | |
2013 | } | |
997ea58e | 2014 | buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); |
a5c66e4b TO |
2015 | if (!buf) { |
2016 | dev_err(&ftdi->udev->dev, "could not get a buffer for the reset" | |
2017 | " sequence\n"); | |
2018 | usb_free_urb(urb); | |
2019 | return -ENOMEM; | |
2020 | } | |
2021 | buf[i++] = 0x55; | |
2022 | buf[i++] = 0xAA; | |
2023 | buf[i++] = 0x5A; | |
2024 | buf[i++] = 0xA5; | |
2025 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
2026 | ftdi->bulk_out_endpointAddr), buf, i, | |
2027 | ftdi_elan_write_bulk_callback, ftdi); | |
2028 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
2029 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
2030 | if (retval) { | |
2031 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the " | |
2032 | "reset sequence\n"); | |
997ea58e | 2033 | usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); |
a5c66e4b TO |
2034 | usb_free_urb(urb); |
2035 | return -ENOMEM; | |
2036 | } | |
2037 | usb_free_urb(urb); | |
2038 | return 0; | |
2039 | } | |
2040 | ||
2041 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi) | |
2042 | { | |
2043 | int retval; | |
2044 | int long_stop = 10; | |
2045 | int retry_on_timeout = 5; | |
2046 | int retry_on_empty = 10; | |
2047 | int err_count = 0; | |
2048 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2049 | if (retval) | |
2050 | return retval; | |
2051 | ftdi->bulk_in_left = 0; | |
2052 | ftdi->bulk_in_last = -1; | |
2053 | while (long_stop-- > 0) { | |
2054 | int read_stop; | |
2055 | int read_stuck; | |
2056 | retval = ftdi_elan_synchronize_flush(ftdi); | |
2057 | if (retval) | |
2058 | return retval; | |
2059 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2060 | if (retval) | |
2061 | return retval; | |
2062 | reset:retval = ftdi_elan_synchronize_reset(ftdi); | |
2063 | if (retval) | |
2064 | return retval; | |
2065 | read_stop = 100; | |
2066 | read_stuck = 10; | |
2067 | read:{ | |
2068 | int packet_bytes = 0; | |
2069 | retval = usb_bulk_msg(ftdi->udev, | |
2070 | usb_rcvbulkpipe(ftdi->udev, | |
2071 | ftdi->bulk_in_endpointAddr), | |
2072 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
c0f082c5 | 2073 | &packet_bytes, 500); |
a5c66e4b TO |
2074 | if (packet_bytes > 2) { |
2075 | char diag[30 *3 + 4]; | |
2076 | char *d = diag; | |
2077 | int m = (sizeof(diag) - 1) / 3; | |
2078 | char *b = ftdi->bulk_in_buffer; | |
2079 | int bytes_read = 0; | |
2080 | unsigned char c = 0; | |
2081 | diag[0] = 0; | |
2082 | while (packet_bytes-- > 0) { | |
2083 | c = *b++; | |
2084 | if (bytes_read < m) { | |
2085 | d += sprintf(d, " %02X", c); | |
2086 | } else if (bytes_read > m) { | |
2087 | } else | |
2088 | d += sprintf(d, " .."); | |
2089 | bytes_read += 1; | |
2090 | continue; | |
2091 | } | |
2092 | if (c == 0x7E) { | |
2093 | return 0; | |
2094 | } else { | |
2095 | if (c == 0x55) { | |
2096 | goto read; | |
2097 | } else if (read_stop-- > 0) { | |
2098 | goto read; | |
2099 | } else { | |
2100 | dev_err(&ftdi->udev->dev, "retr" | |
2101 | "y limit reached\n"); | |
2102 | continue; | |
2103 | } | |
2104 | } | |
2105 | } else if (packet_bytes > 1) { | |
2106 | unsigned char s1 = ftdi->bulk_in_buffer[0]; | |
2107 | unsigned char s2 = ftdi->bulk_in_buffer[1]; | |
2108 | if (s1 == 0x31 && s2 == 0x00) { | |
2109 | if (read_stuck-- > 0) { | |
2110 | goto read; | |
2111 | } else | |
2112 | goto reset; | |
2113 | } else if (s1 == 0x31 && s2 == 0x60) { | |
2114 | if (read_stop-- > 0) { | |
2115 | goto read; | |
2116 | } else { | |
2117 | dev_err(&ftdi->udev->dev, "retr" | |
2118 | "y limit reached\n"); | |
2119 | continue; | |
2120 | } | |
2121 | } else { | |
2122 | if (read_stop-- > 0) { | |
2123 | goto read; | |
2124 | } else { | |
2125 | dev_err(&ftdi->udev->dev, "retr" | |
2126 | "y limit reached\n"); | |
2127 | continue; | |
2128 | } | |
2129 | } | |
2130 | } else if (packet_bytes > 0) { | |
2131 | if (read_stop-- > 0) { | |
2132 | goto read; | |
2133 | } else { | |
2134 | dev_err(&ftdi->udev->dev, "retry limit " | |
2135 | "reached\n"); | |
2136 | continue; | |
2137 | } | |
2138 | } else if (retval == -ETIMEDOUT) { | |
2139 | if (retry_on_timeout-- > 0) { | |
2140 | goto read; | |
2141 | } else { | |
2142 | dev_err(&ftdi->udev->dev, "TIMED OUT re" | |
2143 | "try limit reached\n"); | |
2144 | continue; | |
2145 | } | |
2146 | } else if (retval == 0) { | |
2147 | if (retry_on_empty-- > 0) { | |
2148 | goto read; | |
2149 | } else { | |
2150 | dev_err(&ftdi->udev->dev, "empty packet" | |
2151 | " retry limit reached\n"); | |
2152 | continue; | |
2153 | } | |
2154 | } else { | |
2155 | err_count += 1; | |
2156 | dev_err(&ftdi->udev->dev, "error = %d\n", | |
2157 | retval); | |
2158 | if (read_stop-- > 0) { | |
2159 | goto read; | |
2160 | } else { | |
2161 | dev_err(&ftdi->udev->dev, "retry limit " | |
2162 | "reached\n"); | |
2163 | continue; | |
2164 | } | |
2165 | } | |
2166 | } | |
2167 | } | |
2168 | dev_err(&ftdi->udev->dev, "failed to synchronize\n"); | |
2169 | return -EFAULT; | |
2170 | } | |
2171 | ||
2172 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi) | |
2173 | { | |
2174 | int retry_on_empty = 10; | |
2175 | int retry_on_timeout = 5; | |
2176 | int retry_on_status = 50; | |
2177 | more:{ | |
2178 | int packet_bytes = 0; | |
2179 | int retval = usb_bulk_msg(ftdi->udev, | |
2180 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
2181 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
c0f082c5 | 2182 | &packet_bytes, 1000); |
a5c66e4b TO |
2183 | if (packet_bytes > 2) { |
2184 | char diag[30 *3 + 4]; | |
2185 | char *d = diag; | |
2186 | int m = (sizeof(diag) - 1) / 3; | |
2187 | char *b = ftdi->bulk_in_buffer; | |
2188 | int bytes_read = 0; | |
2189 | diag[0] = 0; | |
2190 | while (packet_bytes-- > 0) { | |
2191 | char c = *b++; | |
2192 | if (bytes_read < m) { | |
2193 | d += sprintf(d, " %02X", | |
2194 | 0x000000FF & c); | |
2195 | } else if (bytes_read > m) { | |
2196 | } else | |
2197 | d += sprintf(d, " .."); | |
2198 | bytes_read += 1; | |
2199 | continue; | |
2200 | } | |
2201 | goto more; | |
2202 | } else if (packet_bytes > 1) { | |
2203 | char s1 = ftdi->bulk_in_buffer[0]; | |
2204 | char s2 = ftdi->bulk_in_buffer[1]; | |
2205 | if (s1 == 0x31 && s2 == 0x60) { | |
2206 | return 0; | |
2207 | } else if (retry_on_status-- > 0) { | |
2208 | msleep(5); | |
2209 | goto more; | |
2210 | } else | |
2211 | return -EFAULT; | |
2212 | } else if (packet_bytes > 0) { | |
2213 | char b1 = ftdi->bulk_in_buffer[0]; | |
2214 | dev_err(&ftdi->udev->dev, "only one byte flushed from F" | |
2215 | "TDI = %02X\n", b1); | |
2216 | if (retry_on_status-- > 0) { | |
2217 | msleep(5); | |
2218 | goto more; | |
2219 | } else { | |
2220 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry l" | |
2221 | "imit reached\n"); | |
2222 | return -EFAULT; | |
2223 | } | |
2224 | } else if (retval == -ETIMEDOUT) { | |
2225 | if (retry_on_timeout-- > 0) { | |
2226 | goto more; | |
2227 | } else { | |
2228 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limi" | |
2229 | "t reached\n"); | |
2230 | return -ENOMEM; | |
2231 | } | |
2232 | } else if (retval == 0) { | |
2233 | if (retry_on_empty-- > 0) { | |
2234 | goto more; | |
2235 | } else { | |
2236 | dev_err(&ftdi->udev->dev, "empty packet retry l" | |
2237 | "imit reached\n"); | |
2238 | return -ENOMEM; | |
2239 | } | |
2240 | } else { | |
2241 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
2242 | return -ENOMEM; | |
2243 | } | |
2244 | } | |
2245 | return -1; | |
2246 | } | |
2247 | ||
2248 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi) | |
2249 | { | |
2250 | int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg); | |
2251 | if (UxxxStatus) | |
2252 | return UxxxStatus; | |
2253 | if (ftdi->controlreg & 0x00400000) { | |
2254 | if (ftdi->card_ejected) { | |
2255 | } else { | |
2256 | ftdi->card_ejected = 1; | |
2257 | dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = " | |
2258 | "%08X\n", ftdi->controlreg); | |
2259 | } | |
2260 | return -ENODEV; | |
2261 | } else { | |
2262 | u8 fn = ftdi->function - 1; | |
2263 | int activePCIfn = fn << 8; | |
2264 | u32 pcidata; | |
2265 | u32 pciVID; | |
2266 | u32 pciPID; | |
2267 | int reg = 0; | |
2268 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2269 | &pcidata); | |
2270 | if (UxxxStatus) | |
2271 | return UxxxStatus; | |
2272 | pciVID = pcidata & 0xFFFF; | |
2273 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2274 | if (pciVID == ftdi->platform_data.vendor && pciPID == | |
2275 | ftdi->platform_data.device) { | |
2276 | return 0; | |
2277 | } else { | |
2278 | dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X devi" | |
2279 | "ce=%04X pciPID=%04X\n", | |
2280 | ftdi->platform_data.vendor, pciVID, | |
2281 | ftdi->platform_data.device, pciPID); | |
2282 | return -ENODEV; | |
2283 | } | |
2284 | } | |
2285 | } | |
2286 | ||
4b87361d TO |
2287 | |
2288 | #define ftdi_read_pcimem(ftdi, member, data) ftdi_elan_read_pcimem(ftdi, \ | |
2289 | offsetof(struct ohci_regs, member), 0, data); | |
2290 | #define ftdi_write_pcimem(ftdi, member, data) ftdi_elan_write_pcimem(ftdi, \ | |
2291 | offsetof(struct ohci_regs, member), 0, data); | |
47f8468e | 2292 | |
4b87361d TO |
2293 | #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR |
2294 | #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \ | |
2295 | OHCI_INTR_WDH) | |
2296 | static int ftdi_elan_check_controller(struct usb_ftdi *ftdi, int quirk) | |
2297 | { | |
2298 | int devices = 0; | |
2299 | int retval; | |
2300 | u32 hc_control; | |
2301 | int num_ports; | |
2302 | u32 control; | |
2303 | u32 rh_a = -1; | |
2304 | u32 status; | |
2305 | u32 fminterval; | |
2306 | u32 hc_fminterval; | |
2307 | u32 periodicstart; | |
2308 | u32 cmdstatus; | |
2309 | u32 roothub_a; | |
2310 | int mask = OHCI_INTR_INIT; | |
2311 | int sleep_time = 0; | |
2312 | int reset_timeout = 30; /* ... allow extra time */ | |
2313 | int temp; | |
2314 | retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE); | |
2315 | if (retval) | |
2316 | return retval; | |
2317 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2318 | if (retval) | |
2319 | return retval; | |
2320 | retval = ftdi_read_pcimem(ftdi, roothub.a, &rh_a); | |
2321 | if (retval) | |
2322 | return retval; | |
2323 | num_ports = rh_a & RH_A_NDP; | |
2324 | retval = ftdi_read_pcimem(ftdi, fminterval, &hc_fminterval); | |
2325 | if (retval) | |
2326 | return retval; | |
2327 | hc_fminterval &= 0x3fff; | |
2328 | if (hc_fminterval != FI) { | |
2329 | } | |
2330 | hc_fminterval |= FSMP(hc_fminterval) << 16; | |
2331 | retval = ftdi_read_pcimem(ftdi, control, &hc_control); | |
2332 | if (retval) | |
2333 | return retval; | |
2334 | switch (hc_control & OHCI_CTRL_HCFS) { | |
2335 | case OHCI_USB_OPER: | |
2336 | sleep_time = 0; | |
2337 | break; | |
2338 | case OHCI_USB_SUSPEND: | |
2339 | case OHCI_USB_RESUME: | |
2340 | hc_control &= OHCI_CTRL_RWC; | |
2341 | hc_control |= OHCI_USB_RESUME; | |
2342 | sleep_time = 10; | |
2343 | break; | |
2344 | default: | |
2345 | hc_control &= OHCI_CTRL_RWC; | |
2346 | hc_control |= OHCI_USB_RESET; | |
2347 | sleep_time = 50; | |
2348 | break; | |
2349 | } | |
2350 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2351 | if (retval) | |
2352 | return retval; | |
2353 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2354 | if (retval) | |
2355 | return retval; | |
2356 | msleep(sleep_time); | |
2357 | retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); | |
2358 | if (retval) | |
2359 | return retval; | |
2360 | if (!(roothub_a & RH_A_NPS)) { /* power down each port */ | |
2361 | for (temp = 0; temp < num_ports; temp++) { | |
2362 | retval = ftdi_write_pcimem(ftdi, | |
2363 | roothub.portstatus[temp], RH_PS_LSDA); | |
2364 | if (retval) | |
2365 | return retval; | |
2366 | } | |
2367 | } | |
2368 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2369 | if (retval) | |
2370 | return retval; | |
2371 | retry:retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); | |
2372 | if (retval) | |
2373 | return retval; | |
2374 | retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_HCR); | |
2375 | if (retval) | |
2376 | return retval; | |
2377 | extra:{ | |
2378 | retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); | |
2379 | if (retval) | |
2380 | return retval; | |
2381 | if (0 != (status & OHCI_HCR)) { | |
2382 | if (--reset_timeout == 0) { | |
2383 | dev_err(&ftdi->udev->dev, "USB HC reset timed o" | |
2384 | "ut!\n"); | |
2385 | return -ENODEV; | |
2386 | } else { | |
2387 | msleep(5); | |
2388 | goto extra; | |
2389 | } | |
2390 | } | |
2391 | } | |
2392 | if (quirk & OHCI_QUIRK_INITRESET) { | |
2393 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2394 | if (retval) | |
2395 | return retval; | |
2396 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2397 | if (retval) | |
2398 | return retval; | |
2399 | } | |
2400 | retval = ftdi_write_pcimem(ftdi, ed_controlhead, 0x00000000); | |
2401 | if (retval) | |
2402 | return retval; | |
2403 | retval = ftdi_write_pcimem(ftdi, ed_bulkhead, 0x11000000); | |
2404 | if (retval) | |
2405 | return retval; | |
2406 | retval = ftdi_write_pcimem(ftdi, hcca, 0x00000000); | |
2407 | if (retval) | |
2408 | return retval; | |
2409 | retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); | |
2410 | if (retval) | |
2411 | return retval; | |
2412 | retval = ftdi_write_pcimem(ftdi, fminterval, | |
2413 | ((fminterval & FIT) ^ FIT) | hc_fminterval); | |
2414 | if (retval) | |
2415 | return retval; | |
2416 | retval = ftdi_write_pcimem(ftdi, periodicstart, | |
2417 | ((9 *hc_fminterval) / 10) & 0x3fff); | |
2418 | if (retval) | |
2419 | return retval; | |
2420 | retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); | |
2421 | if (retval) | |
2422 | return retval; | |
2423 | retval = ftdi_read_pcimem(ftdi, periodicstart, &periodicstart); | |
2424 | if (retval) | |
2425 | return retval; | |
2426 | if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) { | |
2427 | if (!(quirk & OHCI_QUIRK_INITRESET)) { | |
2428 | quirk |= OHCI_QUIRK_INITRESET; | |
2429 | goto retry; | |
2430 | } else | |
2431 | dev_err(&ftdi->udev->dev, "init err(%08x %04x)\n", | |
2432 | fminterval, periodicstart); | |
2433 | } /* start controller operations */ | |
2434 | hc_control &= OHCI_CTRL_RWC; | |
2435 | hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER; | |
2436 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2437 | if (retval) | |
2438 | return retval; | |
2439 | retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_BLF); | |
2440 | if (retval) | |
2441 | return retval; | |
2442 | retval = ftdi_read_pcimem(ftdi, cmdstatus, &cmdstatus); | |
2443 | if (retval) | |
2444 | return retval; | |
2445 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2446 | if (retval) | |
2447 | return retval; | |
2448 | retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_DRWE); | |
2449 | if (retval) | |
2450 | return retval; | |
2451 | retval = ftdi_write_pcimem(ftdi, intrstatus, mask); | |
2452 | if (retval) | |
2453 | return retval; | |
2454 | retval = ftdi_write_pcimem(ftdi, intrdisable, | |
2455 | OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO | | |
2456 | OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH | | |
2457 | OHCI_INTR_SO); | |
2458 | if (retval) | |
2459 | return retval; /* handle root hub init quirks ... */ | |
2460 | retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); | |
2461 | if (retval) | |
2462 | return retval; | |
2463 | roothub_a &= ~(RH_A_PSM | RH_A_OCPM); | |
2464 | if (quirk & OHCI_QUIRK_SUPERIO) { | |
2465 | roothub_a |= RH_A_NOCP; | |
2466 | roothub_a &= ~(RH_A_POTPGT | RH_A_NPS); | |
2467 | retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); | |
2468 | if (retval) | |
2469 | return retval; | |
2470 | } else if ((quirk & OHCI_QUIRK_AMD756) || distrust_firmware) { | |
2471 | roothub_a |= RH_A_NPS; | |
2472 | retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); | |
2473 | if (retval) | |
2474 | return retval; | |
2475 | } | |
2476 | retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_LPSC); | |
2477 | if (retval) | |
2478 | return retval; | |
2479 | retval = ftdi_write_pcimem(ftdi, roothub.b, | |
2480 | (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM); | |
2481 | if (retval) | |
2482 | return retval; | |
2483 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2484 | if (retval) | |
2485 | return retval; | |
2486 | mdelay((roothub_a >> 23) & 0x1fe); | |
2487 | for (temp = 0; temp < num_ports; temp++) { | |
2488 | u32 portstatus; | |
2489 | retval = ftdi_read_pcimem(ftdi, roothub.portstatus[temp], | |
2490 | &portstatus); | |
2491 | if (retval) | |
2492 | return retval; | |
2493 | if (1 & portstatus) | |
2494 | devices += 1; | |
2495 | } | |
2496 | return devices; | |
2497 | } | |
2498 | ||
2499 | static int ftdi_elan_setup_controller(struct usb_ftdi *ftdi, int fn) | |
a5c66e4b TO |
2500 | { |
2501 | u32 latence_timer; | |
a5c66e4b TO |
2502 | int UxxxStatus; |
2503 | u32 pcidata; | |
2504 | int reg = 0; | |
4b87361d TO |
2505 | int activePCIfn = fn << 8; |
2506 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); | |
a5c66e4b TO |
2507 | if (UxxxStatus) |
2508 | return UxxxStatus; | |
4b87361d TO |
2509 | reg = 16; |
2510 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2511 | 0xFFFFFFFF); | |
a5c66e4b TO |
2512 | if (UxxxStatus) |
2513 | return UxxxStatus; | |
4b87361d TO |
2514 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, |
2515 | &pcidata); | |
a5c66e4b TO |
2516 | if (UxxxStatus) |
2517 | return UxxxStatus; | |
4b87361d TO |
2518 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, |
2519 | 0xF0000000); | |
a5c66e4b TO |
2520 | if (UxxxStatus) |
2521 | return UxxxStatus; | |
4b87361d TO |
2522 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, |
2523 | &pcidata); | |
a5c66e4b TO |
2524 | if (UxxxStatus) |
2525 | return UxxxStatus; | |
4b87361d TO |
2526 | reg = 12; |
2527 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2528 | &latence_timer); | |
a5c66e4b TO |
2529 | if (UxxxStatus) |
2530 | return UxxxStatus; | |
4b87361d TO |
2531 | latence_timer &= 0xFFFF00FF; |
2532 | latence_timer |= 0x00001600; | |
2533 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2534 | latence_timer); | |
a5c66e4b TO |
2535 | if (UxxxStatus) |
2536 | return UxxxStatus; | |
4b87361d TO |
2537 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, |
2538 | &pcidata); | |
a5c66e4b TO |
2539 | if (UxxxStatus) |
2540 | return UxxxStatus; | |
4b87361d TO |
2541 | reg = 4; |
2542 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2543 | 0x06); | |
a5c66e4b TO |
2544 | if (UxxxStatus) |
2545 | return UxxxStatus; | |
4b87361d TO |
2546 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, |
2547 | &pcidata); | |
a5c66e4b TO |
2548 | if (UxxxStatus) |
2549 | return UxxxStatus; | |
4b87361d TO |
2550 | for (reg = 0; reg <= 0x54; reg += 4) { |
2551 | UxxxStatus = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
a5c66e4b TO |
2552 | if (UxxxStatus) |
2553 | return UxxxStatus; | |
a5c66e4b | 2554 | } |
4b87361d TO |
2555 | return 0; |
2556 | } | |
2557 | ||
2558 | static int ftdi_elan_close_controller(struct usb_ftdi *ftdi, int fn) | |
2559 | { | |
2560 | u32 latence_timer; | |
2561 | int UxxxStatus; | |
2562 | u32 pcidata; | |
2563 | int reg = 0; | |
2564 | int activePCIfn = fn << 8; | |
a5c66e4b TO |
2565 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); |
2566 | if (UxxxStatus) | |
2567 | return UxxxStatus; | |
2568 | reg = 16; | |
2569 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2570 | 0xFFFFFFFF); | |
2571 | if (UxxxStatus) | |
2572 | return UxxxStatus; | |
2573 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2574 | &pcidata); | |
2575 | if (UxxxStatus) | |
2576 | return UxxxStatus; | |
2577 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
4b87361d | 2578 | 0x00000000); |
a5c66e4b TO |
2579 | if (UxxxStatus) |
2580 | return UxxxStatus; | |
2581 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2582 | &pcidata); | |
2583 | if (UxxxStatus) | |
2584 | return UxxxStatus; | |
2585 | reg = 12; | |
2586 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2587 | &latence_timer); | |
2588 | if (UxxxStatus) | |
2589 | return UxxxStatus; | |
2590 | latence_timer &= 0xFFFF00FF; | |
2591 | latence_timer |= 0x00001600; | |
2592 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2593 | latence_timer); | |
2594 | if (UxxxStatus) | |
2595 | return UxxxStatus; | |
2596 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2597 | &pcidata); | |
2598 | if (UxxxStatus) | |
2599 | return UxxxStatus; | |
2600 | reg = 4; | |
2601 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
4b87361d | 2602 | 0x00); |
a5c66e4b TO |
2603 | if (UxxxStatus) |
2604 | return UxxxStatus; | |
2605 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2606 | &pcidata); | |
2607 | if (UxxxStatus) | |
2608 | return UxxxStatus; | |
2609 | return 0; | |
2610 | } | |
2611 | ||
4b87361d TO |
2612 | static int ftdi_elan_found_controller(struct usb_ftdi *ftdi, int fn, int quirk) |
2613 | { | |
2614 | int result; | |
2615 | int UxxxStatus; | |
2616 | UxxxStatus = ftdi_elan_setup_controller(ftdi, fn); | |
2617 | if (UxxxStatus) | |
2618 | return UxxxStatus; | |
2619 | result = ftdi_elan_check_controller(ftdi, quirk); | |
2620 | UxxxStatus = ftdi_elan_close_controller(ftdi, fn); | |
2621 | if (UxxxStatus) | |
2622 | return UxxxStatus; | |
2623 | return result; | |
2624 | } | |
2625 | ||
2626 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi) | |
2627 | { | |
2628 | u32 controlreg; | |
2629 | u8 sensebits; | |
2630 | int UxxxStatus; | |
2631 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2632 | if (UxxxStatus) | |
2633 | return UxxxStatus; | |
2634 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L); | |
2635 | if (UxxxStatus) | |
2636 | return UxxxStatus; | |
2637 | msleep(750); | |
2638 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100); | |
2639 | if (UxxxStatus) | |
2640 | return UxxxStatus; | |
2641 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500); | |
2642 | if (UxxxStatus) | |
2643 | return UxxxStatus; | |
2644 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2645 | if (UxxxStatus) | |
2646 | return UxxxStatus; | |
2647 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000); | |
2648 | if (UxxxStatus) | |
2649 | return UxxxStatus; | |
2650 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000); | |
2651 | if (UxxxStatus) | |
2652 | return UxxxStatus; | |
2653 | msleep(250); | |
2654 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000); | |
2655 | if (UxxxStatus) | |
2656 | return UxxxStatus; | |
2657 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2658 | if (UxxxStatus) | |
2659 | return UxxxStatus; | |
2660 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800); | |
2661 | if (UxxxStatus) | |
2662 | return UxxxStatus; | |
2663 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2664 | if (UxxxStatus) | |
2665 | return UxxxStatus; | |
2666 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2667 | if (UxxxStatus) | |
2668 | return UxxxStatus; | |
2669 | msleep(1000); | |
2670 | sensebits = (controlreg >> 16) & 0x000F; | |
2671 | if (0x0D == sensebits) | |
2672 | return 0; | |
2673 | else | |
2674 | return - ENXIO; | |
2675 | } | |
2676 | ||
a5c66e4b TO |
2677 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi) |
2678 | { | |
4b87361d | 2679 | int UxxxStatus; |
a5c66e4b | 2680 | u32 pcidata; |
4b87361d TO |
2681 | int reg = 0; |
2682 | u8 fn; | |
2683 | int activePCIfn = 0; | |
2684 | int max_devices = 0; | |
2685 | int controllers = 0; | |
2686 | int unrecognized = 0; | |
2687 | ftdi->function = 0; | |
2688 | for (fn = 0; (fn < 4); fn++) { | |
2689 | u32 pciVID = 0; | |
2690 | u32 pciPID = 0; | |
2691 | int devices = 0; | |
2692 | activePCIfn = fn << 8; | |
2693 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2694 | &pcidata); | |
2695 | if (UxxxStatus) | |
2696 | return UxxxStatus; | |
2697 | pciVID = pcidata & 0xFFFF; | |
2698 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2699 | if ((pciVID == PCI_VENDOR_ID_OPTI) && (pciPID == 0xc861)) { | |
2700 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2701 | controllers += 1; | |
2702 | } else if ((pciVID == PCI_VENDOR_ID_NEC) && (pciPID == 0x0035)) | |
2703 | { | |
2704 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2705 | controllers += 1; | |
2706 | } else if ((pciVID == PCI_VENDOR_ID_AL) && (pciPID == 0x5237)) { | |
2707 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2708 | controllers += 1; | |
2709 | } else if ((pciVID == PCI_VENDOR_ID_ATT) && (pciPID == 0x5802)) | |
2710 | { | |
2711 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2712 | controllers += 1; | |
2713 | } else if (pciVID == PCI_VENDOR_ID_AMD && pciPID == 0x740c) { | |
2714 | devices = ftdi_elan_found_controller(ftdi, fn, | |
2715 | OHCI_QUIRK_AMD756); | |
2716 | controllers += 1; | |
2717 | } else if (pciVID == PCI_VENDOR_ID_COMPAQ && pciPID == 0xa0f8) { | |
2718 | devices = ftdi_elan_found_controller(ftdi, fn, | |
2719 | OHCI_QUIRK_ZFMICRO); | |
2720 | controllers += 1; | |
2721 | } else if (0 == pcidata) { | |
2722 | } else | |
2723 | unrecognized += 1; | |
2724 | if (devices > max_devices) { | |
2725 | max_devices = devices; | |
2726 | ftdi->function = fn + 1; | |
2727 | ftdi->platform_data.vendor = pciVID; | |
2728 | ftdi->platform_data.device = pciPID; | |
a5c66e4b TO |
2729 | } |
2730 | } | |
4b87361d TO |
2731 | if (ftdi->function > 0) { |
2732 | UxxxStatus = ftdi_elan_setup_controller(ftdi, | |
2733 | ftdi->function - 1); | |
2734 | if (UxxxStatus) | |
2735 | return UxxxStatus; | |
2736 | return 0; | |
2737 | } else if (controllers > 0) { | |
2738 | return -ENXIO; | |
2739 | } else if (unrecognized > 0) { | |
2740 | return -ENXIO; | |
2741 | } else { | |
2742 | ftdi->enumerated = 0; | |
2743 | return -ENXIO; | |
a5c66e4b | 2744 | } |
a5c66e4b TO |
2745 | } |
2746 | ||
2747 | ||
2748 | /* | |
2749 | * we use only the first bulk-in and bulk-out endpoints | |
2750 | */ | |
2751 | static int ftdi_elan_probe(struct usb_interface *interface, | |
2752 | const struct usb_device_id *id) | |
2753 | { | |
2754 | struct usb_host_interface *iface_desc; | |
2755 | struct usb_endpoint_descriptor *endpoint; | |
2756 | size_t buffer_size; | |
2757 | int i; | |
2758 | int retval = -ENOMEM; | |
5280d608 MK |
2759 | struct usb_ftdi *ftdi; |
2760 | ||
2761 | ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL); | |
2762 | if (!ftdi) { | |
a5c66e4b TO |
2763 | printk(KERN_ERR "Out of memory\n"); |
2764 | return -ENOMEM; | |
2765 | } | |
5280d608 | 2766 | |
eb33caec | 2767 | mutex_lock(&ftdi_module_lock); |
a5c66e4b TO |
2768 | list_add_tail(&ftdi->ftdi_list, &ftdi_static_list); |
2769 | ftdi->sequence_num = ++ftdi_instances; | |
eb33caec | 2770 | mutex_unlock(&ftdi_module_lock); |
a5c66e4b TO |
2771 | ftdi_elan_init_kref(ftdi); |
2772 | init_MUTEX(&ftdi->sw_lock); | |
2773 | ftdi->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2774 | ftdi->interface = interface; | |
c93d4650 | 2775 | mutex_init(&ftdi->u132_lock); |
a5c66e4b TO |
2776 | ftdi->expected = 4; |
2777 | iface_desc = interface->cur_altsetting; | |
2778 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2779 | endpoint = &iface_desc->endpoint[i].desc; | |
2780 | if (!ftdi->bulk_in_endpointAddr && | |
2ae7745b | 2781 | usb_endpoint_is_bulk_in(endpoint)) { |
a5c66e4b TO |
2782 | buffer_size = le16_to_cpu(endpoint->wMaxPacketSize); |
2783 | ftdi->bulk_in_size = buffer_size; | |
2784 | ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; | |
2785 | ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2786 | if (!ftdi->bulk_in_buffer) { | |
2787 | dev_err(&ftdi->udev->dev, "Could not allocate b" | |
2788 | "ulk_in_buffer\n"); | |
2789 | retval = -ENOMEM; | |
2790 | goto error; | |
2791 | } | |
2792 | } | |
2793 | if (!ftdi->bulk_out_endpointAddr && | |
2ae7745b | 2794 | usb_endpoint_is_bulk_out(endpoint)) { |
a5c66e4b TO |
2795 | ftdi->bulk_out_endpointAddr = |
2796 | endpoint->bEndpointAddress; | |
2797 | } | |
2798 | } | |
2799 | if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) { | |
2800 | dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk" | |
2801 | "-out endpoints\n"); | |
2802 | retval = -ENODEV; | |
2803 | goto error; | |
2804 | } | |
2805 | dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", | |
2806 | iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, | |
2807 | ftdi->bulk_out_endpointAddr); | |
2808 | usb_set_intfdata(interface, ftdi); | |
2809 | if (iface_desc->desc.bInterfaceNumber == 0 && | |
2810 | ftdi->bulk_in_endpointAddr == 0x81 && | |
2811 | ftdi->bulk_out_endpointAddr == 0x02) { | |
2812 | retval = usb_register_dev(interface, &ftdi_elan_jtag_class); | |
2813 | if (retval) { | |
2814 | dev_err(&ftdi->udev->dev, "Not able to get a minor for " | |
2815 | "this device.\n"); | |
2816 | usb_set_intfdata(interface, NULL); | |
2817 | retval = -ENOMEM; | |
2818 | goto error; | |
2819 | } else { | |
2820 | ftdi->class = &ftdi_elan_jtag_class; | |
2821 | dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface " | |
2822 | "%d now attached to ftdi%d\n", ftdi, | |
2823 | iface_desc->desc.bInterfaceNumber, | |
2824 | interface->minor); | |
2825 | return 0; | |
2826 | } | |
2827 | } else if (iface_desc->desc.bInterfaceNumber == 1 && | |
2828 | ftdi->bulk_in_endpointAddr == 0x83 && | |
2829 | ftdi->bulk_out_endpointAddr == 0x04) { | |
2830 | ftdi->class = NULL; | |
2831 | dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now a" | |
2832 | "ctivated\n", ftdi, iface_desc->desc.bInterfaceNumber); | |
c4028958 DH |
2833 | INIT_DELAYED_WORK(&ftdi->status_work, ftdi_elan_status_work); |
2834 | INIT_DELAYED_WORK(&ftdi->command_work, ftdi_elan_command_work); | |
2835 | INIT_DELAYED_WORK(&ftdi->respond_work, ftdi_elan_respond_work); | |
a5c66e4b TO |
2836 | ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000)); |
2837 | return 0; | |
2838 | } else { | |
2839 | dev_err(&ftdi->udev->dev, | |
2840 | "Could not find ELAN's U132 device\n"); | |
2841 | retval = -ENODEV; | |
2842 | goto error; | |
2843 | } | |
2844 | error:if (ftdi) { | |
2845 | ftdi_elan_put_kref(ftdi); | |
2846 | } | |
2847 | return retval; | |
2848 | } | |
2849 | ||
2850 | static void ftdi_elan_disconnect(struct usb_interface *interface) | |
2851 | { | |
2852 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); | |
2853 | ftdi->disconnected += 1; | |
2854 | if (ftdi->class) { | |
2855 | int minor = interface->minor; | |
2856 | struct usb_class_driver *class = ftdi->class; | |
2857 | usb_set_intfdata(interface, NULL); | |
2858 | usb_deregister_dev(interface, class); | |
2859 | dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on min" | |
2860 | "or %d now disconnected\n", minor); | |
2861 | } else { | |
2862 | ftdi_status_cancel_work(ftdi); | |
2863 | ftdi_command_cancel_work(ftdi); | |
2864 | ftdi_response_cancel_work(ftdi); | |
2865 | ftdi_elan_abandon_completions(ftdi); | |
2866 | ftdi_elan_abandon_targets(ftdi); | |
2867 | if (ftdi->registered) { | |
2868 | platform_device_unregister(&ftdi->platform_dev); | |
2869 | ftdi->synchronized = 0; | |
2870 | ftdi->enumerated = 0; | |
4b87361d | 2871 | ftdi->initialized = 0; |
a5c66e4b TO |
2872 | ftdi->registered = 0; |
2873 | } | |
2874 | flush_workqueue(status_queue); | |
2875 | flush_workqueue(command_queue); | |
2876 | flush_workqueue(respond_queue); | |
2877 | ftdi->disconnected += 1; | |
2878 | usb_set_intfdata(interface, NULL); | |
2879 | dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller inter" | |
2880 | "face now disconnected\n"); | |
2881 | } | |
2882 | ftdi_elan_put_kref(ftdi); | |
2883 | } | |
2884 | ||
2885 | static struct usb_driver ftdi_elan_driver = { | |
2886 | .name = "ftdi-elan", | |
2887 | .probe = ftdi_elan_probe, | |
2888 | .disconnect = ftdi_elan_disconnect, | |
2889 | .id_table = ftdi_elan_table, | |
2890 | }; | |
2891 | static int __init ftdi_elan_init(void) | |
2892 | { | |
2893 | int result; | |
2894 | printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name, | |
ee17b289 | 2895 | __TIME__, __DATE__); |
eb33caec | 2896 | mutex_init(&ftdi_module_lock); |
a5c66e4b TO |
2897 | INIT_LIST_HEAD(&ftdi_static_list); |
2898 | status_queue = create_singlethread_workqueue("ftdi-status-control"); | |
ee17b289 | 2899 | if (!status_queue) |
893a342a | 2900 | goto err_status_queue; |
a5c66e4b | 2901 | command_queue = create_singlethread_workqueue("ftdi-command-engine"); |
ee17b289 | 2902 | if (!command_queue) |
893a342a | 2903 | goto err_command_queue; |
a5c66e4b | 2904 | respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); |
ee17b289 | 2905 | if (!respond_queue) |
893a342a | 2906 | goto err_respond_queue; |
a5c66e4b | 2907 | result = usb_register(&ftdi_elan_driver); |
893a342a CG |
2908 | if (result) { |
2909 | destroy_workqueue(status_queue); | |
2910 | destroy_workqueue(command_queue); | |
2911 | destroy_workqueue(respond_queue); | |
a5c66e4b | 2912 | printk(KERN_ERR "usb_register failed. Error number %d\n", |
ee17b289 | 2913 | result); |
893a342a | 2914 | } |
a5c66e4b | 2915 | return result; |
ee17b289 | 2916 | |
893a342a | 2917 | err_respond_queue: |
ee17b289 | 2918 | destroy_workqueue(command_queue); |
893a342a | 2919 | err_command_queue: |
ee17b289 | 2920 | destroy_workqueue(status_queue); |
893a342a | 2921 | err_status_queue: |
ee17b289 CG |
2922 | printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name); |
2923 | return -ENOMEM; | |
a5c66e4b TO |
2924 | } |
2925 | ||
2926 | static void __exit ftdi_elan_exit(void) | |
2927 | { | |
2928 | struct usb_ftdi *ftdi; | |
2929 | struct usb_ftdi *temp; | |
2930 | usb_deregister(&ftdi_elan_driver); | |
2931 | printk(KERN_INFO "ftdi_u132 driver deregistered\n"); | |
2932 | list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) { | |
2933 | ftdi_status_cancel_work(ftdi); | |
2934 | ftdi_command_cancel_work(ftdi); | |
2935 | ftdi_response_cancel_work(ftdi); | |
2936 | } flush_workqueue(status_queue); | |
2937 | destroy_workqueue(status_queue); | |
2938 | status_queue = NULL; | |
2939 | flush_workqueue(command_queue); | |
2940 | destroy_workqueue(command_queue); | |
2941 | command_queue = NULL; | |
2942 | flush_workqueue(respond_queue); | |
2943 | destroy_workqueue(respond_queue); | |
2944 | respond_queue = NULL; | |
2945 | } | |
2946 | ||
2947 | ||
2948 | module_init(ftdi_elan_init); | |
2949 | module_exit(ftdi_elan_exit); |