Commit | Line | Data |
---|---|---|
a5c66e4b | 1 | /* |
8dae693c JP |
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 | */ | |
8355d39c JP |
38 | |
39 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt | |
40 | ||
a5c66e4b TO |
41 | #include <linux/kernel.h> |
42 | #include <linux/errno.h> | |
43 | #include <linux/init.h> | |
44 | #include <linux/list.h> | |
45 | #include <linux/ioctl.h> | |
4b87361d | 46 | #include <linux/pci_ids.h> |
a5c66e4b TO |
47 | #include <linux/slab.h> |
48 | #include <linux/module.h> | |
49 | #include <linux/kref.h> | |
eb33caec | 50 | #include <linux/mutex.h> |
a5c66e4b TO |
51 | #include <asm/uaccess.h> |
52 | #include <linux/usb.h> | |
53 | #include <linux/workqueue.h> | |
54 | #include <linux/platform_device.h> | |
55 | MODULE_AUTHOR("Tony Olech"); | |
56 | MODULE_DESCRIPTION("FTDI ELAN driver"); | |
57 | MODULE_LICENSE("GPL"); | |
58 | #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444) | |
90ab5ee9 | 59 | static bool distrust_firmware = 1; |
4b87361d | 60 | module_param(distrust_firmware, bool, 0); |
a92cec27 JP |
61 | MODULE_PARM_DESC(distrust_firmware, |
62 | "true to distrust firmware power/overcurrent setup"); | |
a5c66e4b TO |
63 | extern struct platform_driver u132_platform_driver; |
64 | static struct workqueue_struct *status_queue; | |
65 | static struct workqueue_struct *command_queue; | |
66 | static struct workqueue_struct *respond_queue; | |
67 | /* | |
8dae693c JP |
68 | * ftdi_module_lock exists to protect access to global variables |
69 | * | |
70 | */ | |
eb33caec | 71 | static struct mutex ftdi_module_lock; |
a5c66e4b TO |
72 | static int ftdi_instances = 0; |
73 | static struct list_head ftdi_static_list; | |
74 | /* | |
8dae693c JP |
75 | * end of the global variables protected by ftdi_module_lock |
76 | */ | |
a5c66e4b | 77 | #include "usb_u132.h" |
4b87361d | 78 | #include <asm/io.h> |
27729aad | 79 | #include <linux/usb/hcd.h> |
47f8468e | 80 | |
8dae693c JP |
81 | /* FIXME ohci.h is ONLY for internal use by the OHCI driver. |
82 | * If you're going to try stuff like this, you need to split | |
83 | * out shareable stuff (register declarations?) into its own | |
84 | * file, maybe name <linux/usb/ohci.h> | |
85 | */ | |
47f8468e | 86 | |
4b87361d | 87 | #include "../host/ohci.h" |
a5c66e4b TO |
88 | /* Define these values to match your devices*/ |
89 | #define USB_FTDI_ELAN_VENDOR_ID 0x0403 | |
90 | #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea | |
91 | /* table of devices that work with this driver*/ | |
33b9e162 | 92 | static const struct usb_device_id ftdi_elan_table[] = { |
8dae693c JP |
93 | {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)}, |
94 | { /* Terminating entry */ } | |
a5c66e4b TO |
95 | }; |
96 | ||
97 | MODULE_DEVICE_TABLE(usb, ftdi_elan_table); | |
98 | /* only the jtag(firmware upgrade device) interface requires | |
8dae693c JP |
99 | * a device file and corresponding minor number, but the |
100 | * interface is created unconditionally - I suppose it could | |
101 | * be configured or not according to a module parameter. | |
102 | * But since we(now) require one interface per device, | |
103 | * and since it unlikely that a normal installation would | |
104 | * require more than a couple of elan-ftdi devices, 8 seems | |
105 | * like a reasonable limit to have here, and if someone | |
106 | * really requires more than 8 devices, then they can frig the | |
107 | * code and recompile | |
108 | */ | |
a5c66e4b TO |
109 | #define USB_FTDI_ELAN_MINOR_BASE 192 |
110 | #define COMMAND_BITS 5 | |
111 | #define COMMAND_SIZE (1<<COMMAND_BITS) | |
112 | #define COMMAND_MASK (COMMAND_SIZE-1) | |
113 | struct u132_command { | |
8dae693c JP |
114 | u8 header; |
115 | u16 length; | |
116 | u8 address; | |
117 | u8 width; | |
118 | u32 value; | |
119 | int follows; | |
120 | void *buffer; | |
a5c66e4b TO |
121 | }; |
122 | #define RESPOND_BITS 5 | |
123 | #define RESPOND_SIZE (1<<RESPOND_BITS) | |
124 | #define RESPOND_MASK (RESPOND_SIZE-1) | |
125 | struct u132_respond { | |
8dae693c JP |
126 | u8 header; |
127 | u8 address; | |
128 | u32 *value; | |
129 | int *result; | |
130 | struct completion wait_completion; | |
a5c66e4b TO |
131 | }; |
132 | struct u132_target { | |
8dae693c JP |
133 | void *endp; |
134 | struct urb *urb; | |
135 | int toggle_bits; | |
136 | int error_count; | |
137 | int condition_code; | |
138 | int repeat_number; | |
139 | int halted; | |
140 | int skipped; | |
141 | int actual; | |
142 | int non_null; | |
143 | int active; | |
144 | int abandoning; | |
145 | void (*callback)(void *endp, struct urb *urb, u8 *buf, int len, | |
146 | int toggle_bits, int error_count, int condition_code, | |
147 | int repeat_number, int halted, int skipped, int actual, | |
148 | int non_null); | |
a5c66e4b TO |
149 | }; |
150 | /* Structure to hold all of our device specific stuff*/ | |
151 | struct usb_ftdi { | |
8dae693c JP |
152 | struct list_head ftdi_list; |
153 | struct mutex u132_lock; | |
154 | int command_next; | |
155 | int command_head; | |
156 | struct u132_command command[COMMAND_SIZE]; | |
157 | int respond_next; | |
158 | int respond_head; | |
159 | struct u132_respond respond[RESPOND_SIZE]; | |
160 | struct u132_target target[4]; | |
161 | char device_name[16]; | |
162 | unsigned synchronized:1; | |
163 | unsigned enumerated:1; | |
164 | unsigned registered:1; | |
165 | unsigned initialized:1; | |
166 | unsigned card_ejected:1; | |
167 | int function; | |
168 | int sequence_num; | |
169 | int disconnected; | |
170 | int gone_away; | |
171 | int stuck_status; | |
172 | int status_queue_delay; | |
173 | struct semaphore sw_lock; | |
174 | struct usb_device *udev; | |
175 | struct usb_interface *interface; | |
176 | struct usb_class_driver *class; | |
177 | struct delayed_work status_work; | |
178 | struct delayed_work command_work; | |
179 | struct delayed_work respond_work; | |
180 | struct u132_platform_data platform_data; | |
181 | struct resource resources[0]; | |
182 | struct platform_device platform_dev; | |
183 | unsigned char *bulk_in_buffer; | |
184 | size_t bulk_in_size; | |
185 | size_t bulk_in_last; | |
186 | size_t bulk_in_left; | |
187 | __u8 bulk_in_endpointAddr; | |
188 | __u8 bulk_out_endpointAddr; | |
189 | struct kref kref; | |
190 | u32 controlreg; | |
191 | u8 response[4 + 1024]; | |
192 | int expected; | |
193 | int received; | |
194 | int ed_found; | |
a5c66e4b TO |
195 | }; |
196 | #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref) | |
197 | #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \ | |
8dae693c | 198 | platform_dev) |
a5c66e4b TO |
199 | static struct usb_driver ftdi_elan_driver; |
200 | static void ftdi_elan_delete(struct kref *kref) | |
201 | { | |
8dae693c JP |
202 | struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref); |
203 | dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi); | |
204 | usb_put_dev(ftdi->udev); | |
205 | ftdi->disconnected += 1; | |
206 | mutex_lock(&ftdi_module_lock); | |
207 | list_del_init(&ftdi->ftdi_list); | |
208 | ftdi_instances -= 1; | |
209 | mutex_unlock(&ftdi_module_lock); | |
210 | kfree(ftdi->bulk_in_buffer); | |
211 | ftdi->bulk_in_buffer = NULL; | |
a5c66e4b TO |
212 | } |
213 | ||
214 | static void ftdi_elan_put_kref(struct usb_ftdi *ftdi) | |
215 | { | |
8dae693c | 216 | kref_put(&ftdi->kref, ftdi_elan_delete); |
a5c66e4b TO |
217 | } |
218 | ||
219 | static void ftdi_elan_get_kref(struct usb_ftdi *ftdi) | |
220 | { | |
8dae693c | 221 | kref_get(&ftdi->kref); |
a5c66e4b TO |
222 | } |
223 | ||
224 | static void ftdi_elan_init_kref(struct usb_ftdi *ftdi) | |
225 | { | |
8dae693c | 226 | kref_init(&ftdi->kref); |
a5c66e4b TO |
227 | } |
228 | ||
229 | static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
230 | { | |
c4028958 DH |
231 | if (!queue_delayed_work(status_queue, &ftdi->status_work, delta)) |
232 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
233 | } |
234 | ||
235 | static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
236 | { | |
c4028958 DH |
237 | if (queue_delayed_work(status_queue, &ftdi->status_work, delta)) |
238 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
239 | } |
240 | ||
241 | static void ftdi_status_cancel_work(struct usb_ftdi *ftdi) | |
242 | { | |
8dae693c JP |
243 | if (cancel_delayed_work(&ftdi->status_work)) |
244 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
245 | } |
246 | ||
247 | static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
248 | { | |
c4028958 DH |
249 | if (!queue_delayed_work(command_queue, &ftdi->command_work, delta)) |
250 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
251 | } |
252 | ||
253 | static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
254 | { | |
c4028958 DH |
255 | if (queue_delayed_work(command_queue, &ftdi->command_work, delta)) |
256 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
257 | } |
258 | ||
259 | static void ftdi_command_cancel_work(struct usb_ftdi *ftdi) | |
260 | { | |
8dae693c JP |
261 | if (cancel_delayed_work(&ftdi->command_work)) |
262 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
263 | } |
264 | ||
265 | static void ftdi_response_requeue_work(struct usb_ftdi *ftdi, | |
8dae693c | 266 | unsigned int delta) |
a5c66e4b | 267 | { |
c4028958 DH |
268 | if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) |
269 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
270 | } |
271 | ||
272 | static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta) | |
273 | { | |
c4028958 DH |
274 | if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta)) |
275 | kref_get(&ftdi->kref); | |
a5c66e4b TO |
276 | } |
277 | ||
278 | static void ftdi_response_cancel_work(struct usb_ftdi *ftdi) | |
279 | { | |
8dae693c JP |
280 | if (cancel_delayed_work(&ftdi->respond_work)) |
281 | kref_put(&ftdi->kref, ftdi_elan_delete); | |
a5c66e4b TO |
282 | } |
283 | ||
284 | void ftdi_elan_gone_away(struct platform_device *pdev) | |
285 | { | |
8dae693c JP |
286 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
287 | ftdi->gone_away += 1; | |
288 | ftdi_elan_put_kref(ftdi); | |
a5c66e4b TO |
289 | } |
290 | ||
291 | ||
292 | EXPORT_SYMBOL_GPL(ftdi_elan_gone_away); | |
9ce8540c | 293 | static void ftdi_release_platform_dev(struct device *dev) |
a5c66e4b | 294 | { |
8dae693c | 295 | dev->parent = NULL; |
a5c66e4b TO |
296 | } |
297 | ||
298 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
8dae693c | 299 | struct u132_target *target, u8 *buffer, int length); |
a5c66e4b TO |
300 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi); |
301 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi); | |
302 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi); | |
303 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi); | |
304 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi); | |
305 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi); | |
306 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi); | |
307 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi); | |
308 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi); | |
309 | static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi) | |
310 | { | |
8dae693c JP |
311 | int result; |
312 | if (ftdi->platform_dev.dev.parent) | |
313 | return -EBUSY; | |
314 | ftdi_elan_get_kref(ftdi); | |
315 | ftdi->platform_data.potpg = 100; | |
316 | ftdi->platform_data.reset = NULL; | |
317 | ftdi->platform_dev.id = ftdi->sequence_num; | |
318 | ftdi->platform_dev.resource = ftdi->resources; | |
319 | ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources); | |
320 | ftdi->platform_dev.dev.platform_data = &ftdi->platform_data; | |
321 | ftdi->platform_dev.dev.parent = NULL; | |
322 | ftdi->platform_dev.dev.release = ftdi_release_platform_dev; | |
323 | ftdi->platform_dev.dev.dma_mask = NULL; | |
324 | snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd"); | |
325 | ftdi->platform_dev.name = ftdi->device_name; | |
326 | dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd"); | |
327 | request_module("u132_hcd"); | |
328 | dev_info(&ftdi->udev->dev, "registering '%s'\n", | |
329 | ftdi->platform_dev.name); | |
330 | result = platform_device_register(&ftdi->platform_dev); | |
331 | return result; | |
a5c66e4b TO |
332 | } |
333 | ||
334 | static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi) | |
335 | { | |
8dae693c JP |
336 | mutex_lock(&ftdi->u132_lock); |
337 | while (ftdi->respond_next > ftdi->respond_head) { | |
338 | struct u132_respond *respond = &ftdi->respond[RESPOND_MASK & | |
339 | ftdi->respond_head++]; | |
340 | *respond->result = -ESHUTDOWN; | |
341 | *respond->value = 0; | |
342 | complete(&respond->wait_completion); | |
343 | } mutex_unlock(&ftdi->u132_lock); | |
a5c66e4b TO |
344 | } |
345 | ||
346 | static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi) | |
347 | { | |
8dae693c JP |
348 | int ed_number = 4; |
349 | mutex_lock(&ftdi->u132_lock); | |
350 | while (ed_number-- > 0) { | |
351 | struct u132_target *target = &ftdi->target[ed_number]; | |
352 | if (target->active == 1) { | |
353 | target->condition_code = TD_DEVNOTRESP; | |
354 | mutex_unlock(&ftdi->u132_lock); | |
355 | ftdi_elan_do_callback(ftdi, target, NULL, 0); | |
356 | mutex_lock(&ftdi->u132_lock); | |
357 | } | |
358 | } | |
359 | ftdi->received = 0; | |
360 | ftdi->expected = 4; | |
361 | ftdi->ed_found = 0; | |
362 | mutex_unlock(&ftdi->u132_lock); | |
a5c66e4b TO |
363 | } |
364 | ||
365 | static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi) | |
366 | { | |
8dae693c JP |
367 | int ed_number = 4; |
368 | mutex_lock(&ftdi->u132_lock); | |
369 | while (ed_number-- > 0) { | |
370 | struct u132_target *target = &ftdi->target[ed_number]; | |
371 | target->abandoning = 1; | |
372 | wait_1:if (target->active == 1) { | |
373 | int command_size = ftdi->command_next - | |
374 | ftdi->command_head; | |
375 | if (command_size < COMMAND_SIZE) { | |
376 | struct u132_command *command = &ftdi->command[ | |
377 | COMMAND_MASK & ftdi->command_next]; | |
378 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
379 | command->length = 0x00; | |
380 | command->address = 0x00; | |
381 | command->width = 0x00; | |
382 | command->follows = 0; | |
383 | command->value = 0; | |
384 | command->buffer = &command->value; | |
385 | ftdi->command_next += 1; | |
386 | ftdi_elan_kick_command_queue(ftdi); | |
387 | } else { | |
388 | mutex_unlock(&ftdi->u132_lock); | |
389 | msleep(100); | |
390 | mutex_lock(&ftdi->u132_lock); | |
391 | goto wait_1; | |
392 | } | |
393 | } | |
394 | wait_2:if (target->active == 1) { | |
395 | int command_size = ftdi->command_next - | |
396 | ftdi->command_head; | |
397 | if (command_size < COMMAND_SIZE) { | |
398 | struct u132_command *command = &ftdi->command[ | |
399 | COMMAND_MASK & ftdi->command_next]; | |
400 | command->header = 0x90 | (ed_number << 5); | |
401 | command->length = 0x00; | |
402 | command->address = 0x00; | |
403 | command->width = 0x00; | |
404 | command->follows = 0; | |
405 | command->value = 0; | |
406 | command->buffer = &command->value; | |
407 | ftdi->command_next += 1; | |
408 | ftdi_elan_kick_command_queue(ftdi); | |
409 | } else { | |
410 | mutex_unlock(&ftdi->u132_lock); | |
411 | msleep(100); | |
412 | mutex_lock(&ftdi->u132_lock); | |
413 | goto wait_2; | |
414 | } | |
415 | } | |
416 | } | |
417 | ftdi->received = 0; | |
418 | ftdi->expected = 4; | |
419 | ftdi->ed_found = 0; | |
420 | mutex_unlock(&ftdi->u132_lock); | |
a5c66e4b TO |
421 | } |
422 | ||
423 | static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi) | |
424 | { | |
8dae693c JP |
425 | int ed_number = 4; |
426 | mutex_lock(&ftdi->u132_lock); | |
427 | while (ed_number-- > 0) { | |
428 | struct u132_target *target = &ftdi->target[ed_number]; | |
429 | target->abandoning = 1; | |
430 | wait:if (target->active == 1) { | |
431 | int command_size = ftdi->command_next - | |
432 | ftdi->command_head; | |
433 | if (command_size < COMMAND_SIZE) { | |
434 | struct u132_command *command = &ftdi->command[ | |
435 | COMMAND_MASK & ftdi->command_next]; | |
436 | command->header = 0x80 | (ed_number << 5) | 0x4; | |
437 | command->length = 0x00; | |
438 | command->address = 0x00; | |
439 | command->width = 0x00; | |
440 | command->follows = 0; | |
441 | command->value = 0; | |
442 | command->buffer = &command->value; | |
443 | ftdi->command_next += 1; | |
444 | ftdi_elan_kick_command_queue(ftdi); | |
445 | } else { | |
446 | mutex_unlock(&ftdi->u132_lock); | |
447 | msleep(100); | |
448 | mutex_lock(&ftdi->u132_lock); | |
449 | goto wait; | |
450 | } | |
451 | } | |
452 | } | |
453 | ftdi->received = 0; | |
454 | ftdi->expected = 4; | |
455 | ftdi->ed_found = 0; | |
456 | mutex_unlock(&ftdi->u132_lock); | |
a5c66e4b TO |
457 | } |
458 | ||
459 | static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi) | |
460 | { | |
8dae693c | 461 | ftdi_command_queue_work(ftdi, 0); |
a5c66e4b TO |
462 | } |
463 | ||
c4028958 | 464 | static void ftdi_elan_command_work(struct work_struct *work) |
a5c66e4b | 465 | { |
8dae693c | 466 | struct usb_ftdi *ftdi = |
c4028958 DH |
467 | container_of(work, struct usb_ftdi, command_work.work); |
468 | ||
8dae693c JP |
469 | if (ftdi->disconnected > 0) { |
470 | ftdi_elan_put_kref(ftdi); | |
471 | return; | |
472 | } else { | |
473 | int retval = ftdi_elan_command_engine(ftdi); | |
474 | if (retval == -ESHUTDOWN) { | |
475 | ftdi->disconnected += 1; | |
476 | } else if (retval == -ENODEV) { | |
477 | ftdi->disconnected += 1; | |
478 | } else if (retval) | |
479 | dev_err(&ftdi->udev->dev, "command error %d\n", retval); | |
480 | ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10)); | |
481 | return; | |
482 | } | |
a5c66e4b TO |
483 | } |
484 | ||
485 | static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi) | |
486 | { | |
8dae693c | 487 | ftdi_respond_queue_work(ftdi, 0); |
a5c66e4b TO |
488 | } |
489 | ||
c4028958 | 490 | static void ftdi_elan_respond_work(struct work_struct *work) |
a5c66e4b | 491 | { |
8dae693c | 492 | struct usb_ftdi *ftdi = |
c4028958 | 493 | container_of(work, struct usb_ftdi, respond_work.work); |
8dae693c JP |
494 | if (ftdi->disconnected > 0) { |
495 | ftdi_elan_put_kref(ftdi); | |
496 | return; | |
497 | } else { | |
498 | int retval = ftdi_elan_respond_engine(ftdi); | |
499 | if (retval == 0) { | |
500 | } else if (retval == -ESHUTDOWN) { | |
501 | ftdi->disconnected += 1; | |
502 | } else if (retval == -ENODEV) { | |
503 | ftdi->disconnected += 1; | |
504 | } else if (retval == -EILSEQ) { | |
505 | ftdi->disconnected += 1; | |
506 | } else { | |
507 | ftdi->disconnected += 1; | |
508 | dev_err(&ftdi->udev->dev, "respond error %d\n", retval); | |
509 | } | |
510 | if (ftdi->disconnected > 0) { | |
511 | ftdi_elan_abandon_completions(ftdi); | |
512 | ftdi_elan_abandon_targets(ftdi); | |
513 | } | |
514 | ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10)); | |
515 | return; | |
516 | } | |
a5c66e4b TO |
517 | } |
518 | ||
519 | ||
520 | /* | |
8dae693c JP |
521 | * the sw_lock is initially held and will be freed |
522 | * after the FTDI has been synchronized | |
523 | * | |
524 | */ | |
c4028958 | 525 | static void ftdi_elan_status_work(struct work_struct *work) |
a5c66e4b | 526 | { |
8dae693c | 527 | struct usb_ftdi *ftdi = |
c4028958 | 528 | container_of(work, struct usb_ftdi, status_work.work); |
8dae693c JP |
529 | int work_delay_in_msec = 0; |
530 | if (ftdi->disconnected > 0) { | |
531 | ftdi_elan_put_kref(ftdi); | |
532 | return; | |
533 | } else if (ftdi->synchronized == 0) { | |
534 | down(&ftdi->sw_lock); | |
535 | if (ftdi_elan_synchronize(ftdi) == 0) { | |
536 | ftdi->synchronized = 1; | |
537 | ftdi_command_queue_work(ftdi, 1); | |
538 | ftdi_respond_queue_work(ftdi, 1); | |
539 | up(&ftdi->sw_lock); | |
540 | work_delay_in_msec = 100; | |
541 | } else { | |
542 | dev_err(&ftdi->udev->dev, "synchronize failed\n"); | |
543 | up(&ftdi->sw_lock); | |
544 | work_delay_in_msec = 10 *1000; | |
545 | } | |
546 | } else if (ftdi->stuck_status > 0) { | |
547 | if (ftdi_elan_stuck_waiting(ftdi) == 0) { | |
548 | ftdi->stuck_status = 0; | |
549 | ftdi->synchronized = 0; | |
550 | } else if ((ftdi->stuck_status++ % 60) == 1) { | |
5acc6e40 | 551 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted - please remove\n"); |
8dae693c | 552 | } else |
5acc6e40 JP |
553 | dev_err(&ftdi->udev->dev, "WRONG type of card inserted - checked %d times\n", |
554 | ftdi->stuck_status); | |
8dae693c JP |
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 { | |
5acc6e40 | 567 | dev_err(&ftdi->udev->dev, "initialized failed - trying again in 10 seconds\n"); |
8dae693c JP |
568 | work_delay_in_msec = 1 *1000; |
569 | } | |
570 | } else if (ftdi->registered == 0) { | |
571 | work_delay_in_msec = 10; | |
572 | if (ftdi_elan_hcd_init(ftdi) == 0) { | |
573 | ftdi->registered = 1; | |
574 | } else | |
575 | dev_err(&ftdi->udev->dev, "register failed\n"); | |
576 | work_delay_in_msec = 250; | |
577 | } else { | |
578 | if (ftdi_elan_checkingPCI(ftdi) == 0) { | |
579 | work_delay_in_msec = 250; | |
580 | } else if (ftdi->controlreg & 0x00400000) { | |
581 | if (ftdi->gone_away > 0) { | |
5acc6e40 | 582 | dev_err(&ftdi->udev->dev, "PCI device eject confirmed platform_dev.dev.parent=%p platform_dev.dev=%p\n", |
8dae693c JP |
583 | ftdi->platform_dev.dev.parent, |
584 | &ftdi->platform_dev.dev); | |
585 | platform_device_unregister(&ftdi->platform_dev); | |
586 | ftdi->platform_dev.dev.parent = NULL; | |
587 | ftdi->registered = 0; | |
588 | ftdi->enumerated = 0; | |
589 | ftdi->card_ejected = 0; | |
590 | ftdi->initialized = 0; | |
591 | ftdi->gone_away = 0; | |
592 | } else | |
593 | ftdi_elan_flush_targets(ftdi); | |
594 | work_delay_in_msec = 250; | |
595 | } else { | |
a92cec27 | 596 | dev_err(&ftdi->udev->dev, "PCI device has disappeared\n"); |
8dae693c JP |
597 | ftdi_elan_cancel_targets(ftdi); |
598 | work_delay_in_msec = 500; | |
599 | ftdi->enumerated = 0; | |
600 | ftdi->initialized = 0; | |
601 | } | |
602 | } | |
603 | if (ftdi->disconnected > 0) { | |
604 | ftdi_elan_put_kref(ftdi); | |
605 | return; | |
606 | } else { | |
607 | ftdi_status_requeue_work(ftdi, | |
608 | msecs_to_jiffies(work_delay_in_msec)); | |
609 | return; | |
610 | } | |
a5c66e4b TO |
611 | } |
612 | ||
613 | ||
614 | /* | |
8dae693c JP |
615 | * file_operations for the jtag interface |
616 | * | |
617 | * the usage count for the device is incremented on open() | |
618 | * and decremented on release() | |
619 | */ | |
a5c66e4b TO |
620 | static int ftdi_elan_open(struct inode *inode, struct file *file) |
621 | { | |
86266452 ON |
622 | int subminor; |
623 | struct usb_interface *interface; | |
624 | ||
8dae693c JP |
625 | subminor = iminor(inode); |
626 | interface = usb_find_interface(&ftdi_elan_driver, subminor); | |
627 | ||
628 | if (!interface) { | |
8355d39c | 629 | pr_err("can't find device for minor %d\n", subminor); |
8dae693c JP |
630 | return -ENODEV; |
631 | } else { | |
632 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); | |
633 | if (!ftdi) { | |
634 | return -ENODEV; | |
635 | } else { | |
636 | if (down_interruptible(&ftdi->sw_lock)) { | |
637 | return -EINTR; | |
638 | } else { | |
639 | ftdi_elan_get_kref(ftdi); | |
640 | file->private_data = ftdi; | |
641 | return 0; | |
642 | } | |
643 | } | |
644 | } | |
a5c66e4b TO |
645 | } |
646 | ||
647 | static int ftdi_elan_release(struct inode *inode, struct file *file) | |
648 | { | |
8dae693c JP |
649 | struct usb_ftdi *ftdi = file->private_data; |
650 | if (ftdi == NULL) | |
651 | return -ENODEV; | |
652 | up(&ftdi->sw_lock); /* decrement the count on our device */ | |
653 | ftdi_elan_put_kref(ftdi); | |
654 | return 0; | |
a5c66e4b TO |
655 | } |
656 | ||
657 | ||
a5c66e4b | 658 | /* |
8dae693c JP |
659 | * |
660 | * blocking bulk reads are used to get data from the device | |
661 | * | |
662 | */ | |
a5c66e4b TO |
663 | static ssize_t ftdi_elan_read(struct file *file, char __user *buffer, |
664 | size_t count, loff_t *ppos) | |
665 | { | |
8dae693c JP |
666 | char data[30 *3 + 4]; |
667 | char *d = data; | |
668 | int m = (sizeof(data) - 1) / 3; | |
669 | int bytes_read = 0; | |
670 | int retry_on_empty = 10; | |
671 | int retry_on_timeout = 5; | |
672 | struct usb_ftdi *ftdi = file->private_data; | |
673 | if (ftdi->disconnected > 0) { | |
674 | return -ENODEV; | |
675 | } | |
676 | data[0] = 0; | |
677 | have:if (ftdi->bulk_in_left > 0) { | |
678 | if (count-- > 0) { | |
679 | char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer; | |
680 | ftdi->bulk_in_left -= 1; | |
681 | if (bytes_read < m) { | |
682 | d += sprintf(d, " %02X", 0x000000FF & *p); | |
683 | } else if (bytes_read > m) { | |
684 | } else | |
685 | d += sprintf(d, " .."); | |
686 | if (copy_to_user(buffer++, p, 1)) { | |
687 | return -EFAULT; | |
688 | } else { | |
689 | bytes_read += 1; | |
690 | goto have; | |
691 | } | |
692 | } else | |
693 | return bytes_read; | |
694 | } | |
695 | more:if (count > 0) { | |
696 | int packet_bytes = 0; | |
697 | int retval = usb_bulk_msg(ftdi->udev, | |
698 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
699 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
700 | &packet_bytes, 50); | |
701 | if (packet_bytes > 2) { | |
702 | ftdi->bulk_in_left = packet_bytes - 2; | |
703 | ftdi->bulk_in_last = 1; | |
704 | goto have; | |
705 | } else if (retval == -ETIMEDOUT) { | |
706 | if (retry_on_timeout-- > 0) { | |
707 | goto more; | |
708 | } else if (bytes_read > 0) { | |
709 | return bytes_read; | |
710 | } else | |
711 | return retval; | |
712 | } else if (retval == 0) { | |
713 | if (retry_on_empty-- > 0) { | |
714 | goto more; | |
715 | } else | |
716 | return bytes_read; | |
717 | } else | |
718 | return retval; | |
719 | } else | |
720 | return bytes_read; | |
a5c66e4b TO |
721 | } |
722 | ||
7d12e780 | 723 | static void ftdi_elan_write_bulk_callback(struct urb *urb) |
a5c66e4b | 724 | { |
cdc97792 | 725 | struct usb_ftdi *ftdi = urb->context; |
84346269 GKH |
726 | int status = urb->status; |
727 | ||
728 | if (status && !(status == -ENOENT || status == -ECONNRESET || | |
8dae693c | 729 | status == -ESHUTDOWN)) { |
90ba4f79 JP |
730 | dev_err(&ftdi->udev->dev, |
731 | "urb=%p write bulk status received: %d\n", urb, status); | |
8dae693c JP |
732 | } |
733 | usb_free_coherent(urb->dev, urb->transfer_buffer_length, | |
734 | urb->transfer_buffer, urb->transfer_dma); | |
a5c66e4b TO |
735 | } |
736 | ||
737 | static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi, | |
8dae693c JP |
738 | char *buf, int command_size, int total_size) |
739 | { | |
740 | int ed_commands = 0; | |
741 | int b = 0; | |
742 | int I = command_size; | |
743 | int i = ftdi->command_head; | |
744 | while (I-- > 0) { | |
745 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
746 | i++]; | |
747 | int F = command->follows; | |
748 | u8 *f = command->buffer; | |
749 | if (command->header & 0x80) { | |
750 | ed_commands |= 1 << (0x3 & (command->header >> 5)); | |
751 | } | |
752 | buf[b++] = command->header; | |
753 | buf[b++] = (command->length >> 0) & 0x00FF; | |
754 | buf[b++] = (command->length >> 8) & 0x00FF; | |
755 | buf[b++] = command->address; | |
756 | buf[b++] = command->width; | |
757 | while (F-- > 0) { | |
758 | buf[b++] = *f++; | |
759 | } | |
760 | } | |
761 | return ed_commands; | |
a5c66e4b TO |
762 | } |
763 | ||
764 | static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size) | |
765 | { | |
8dae693c JP |
766 | int total_size = 0; |
767 | int I = command_size; | |
768 | int i = ftdi->command_head; | |
769 | while (I-- > 0) { | |
770 | struct u132_command *command = &ftdi->command[COMMAND_MASK & | |
771 | i++]; | |
772 | total_size += 5 + command->follows; | |
773 | } return total_size; | |
a5c66e4b TO |
774 | } |
775 | ||
776 | static int ftdi_elan_command_engine(struct usb_ftdi *ftdi) | |
777 | { | |
8dae693c JP |
778 | int retval; |
779 | char *buf; | |
780 | int ed_commands; | |
781 | int total_size; | |
782 | struct urb *urb; | |
783 | int command_size = ftdi->command_next - ftdi->command_head; | |
784 | if (command_size == 0) | |
785 | return 0; | |
786 | total_size = ftdi_elan_total_command_size(ftdi, command_size); | |
787 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
788 | if (!urb) { | |
5acc6e40 JP |
789 | dev_err(&ftdi->udev->dev, "could not get a urb to write %d commands totaling %d bytes to the Uxxx\n", |
790 | command_size, total_size); | |
8dae693c JP |
791 | return -ENOMEM; |
792 | } | |
793 | buf = usb_alloc_coherent(ftdi->udev, total_size, GFP_KERNEL, | |
794 | &urb->transfer_dma); | |
795 | if (!buf) { | |
5acc6e40 JP |
796 | dev_err(&ftdi->udev->dev, "could not get a buffer to write %d commands totaling %d bytes to the Uxxx\n", |
797 | command_size, total_size); | |
8dae693c JP |
798 | usb_free_urb(urb); |
799 | return -ENOMEM; | |
800 | } | |
801 | ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf, | |
802 | command_size, total_size); | |
803 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
804 | ftdi->bulk_out_endpointAddr), buf, total_size, | |
805 | ftdi_elan_write_bulk_callback, ftdi); | |
806 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
807 | if (ed_commands) { | |
808 | char diag[40 *3 + 4]; | |
809 | char *d = diag; | |
810 | int m = total_size; | |
811 | u8 *c = buf; | |
812 | int s = (sizeof(diag) - 1) / 3; | |
813 | diag[0] = 0; | |
814 | while (s-- > 0 && m-- > 0) { | |
815 | if (s > 0 || m == 0) { | |
816 | d += sprintf(d, " %02X", *c++); | |
817 | } else | |
818 | d += sprintf(d, " .."); | |
819 | } | |
820 | } | |
821 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
822 | if (retval) { | |
5acc6e40 JP |
823 | dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write %d commands totaling %d bytes to the Uxxx\n", |
824 | retval, urb, command_size, total_size); | |
8dae693c JP |
825 | usb_free_coherent(ftdi->udev, total_size, buf, urb->transfer_dma); |
826 | usb_free_urb(urb); | |
827 | return retval; | |
828 | } | |
829 | usb_free_urb(urb); /* release our reference to this urb, | |
830 | the USB core will eventually free it entirely */ | |
831 | ftdi->command_head += command_size; | |
832 | ftdi_elan_kick_respond_queue(ftdi); | |
833 | return 0; | |
a5c66e4b TO |
834 | } |
835 | ||
836 | static void ftdi_elan_do_callback(struct usb_ftdi *ftdi, | |
8dae693c JP |
837 | struct u132_target *target, u8 *buffer, int length) |
838 | { | |
839 | struct urb *urb = target->urb; | |
840 | int halted = target->halted; | |
841 | int skipped = target->skipped; | |
842 | int actual = target->actual; | |
843 | int non_null = target->non_null; | |
844 | int toggle_bits = target->toggle_bits; | |
845 | int error_count = target->error_count; | |
846 | int condition_code = target->condition_code; | |
847 | int repeat_number = target->repeat_number; | |
848 | void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int, | |
849 | int, int, int, int) = target->callback; | |
850 | target->active -= 1; | |
851 | target->callback = NULL; | |
852 | (*callback) (target->endp, urb, buffer, length, toggle_bits, | |
853 | error_count, condition_code, repeat_number, halted, skipped, | |
854 | actual, non_null); | |
a5c66e4b TO |
855 | } |
856 | ||
857 | static char *have_ed_set_response(struct usb_ftdi *ftdi, | |
8dae693c JP |
858 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, |
859 | char *b) | |
860 | { | |
861 | int payload = (ed_length >> 0) & 0x07FF; | |
862 | mutex_lock(&ftdi->u132_lock); | |
863 | target->actual = 0; | |
864 | target->non_null = (ed_length >> 15) & 0x0001; | |
865 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
866 | if (ed_type == 0x02) { | |
867 | if (payload == 0 || target->abandoning > 0) { | |
868 | target->abandoning = 0; | |
869 | mutex_unlock(&ftdi->u132_lock); | |
870 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
871 | payload); | |
872 | ftdi->received = 0; | |
873 | ftdi->expected = 4; | |
874 | ftdi->ed_found = 0; | |
875 | return ftdi->response; | |
876 | } else { | |
877 | ftdi->expected = 4 + payload; | |
878 | ftdi->ed_found = 1; | |
879 | mutex_unlock(&ftdi->u132_lock); | |
880 | return b; | |
881 | } | |
882 | } else if (ed_type == 0x03) { | |
883 | if (payload == 0 || target->abandoning > 0) { | |
884 | target->abandoning = 0; | |
885 | mutex_unlock(&ftdi->u132_lock); | |
886 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
887 | payload); | |
888 | ftdi->received = 0; | |
889 | ftdi->expected = 4; | |
890 | ftdi->ed_found = 0; | |
891 | return ftdi->response; | |
892 | } else { | |
893 | ftdi->expected = 4 + payload; | |
894 | ftdi->ed_found = 1; | |
895 | mutex_unlock(&ftdi->u132_lock); | |
896 | return b; | |
897 | } | |
898 | } else if (ed_type == 0x01) { | |
899 | target->abandoning = 0; | |
900 | mutex_unlock(&ftdi->u132_lock); | |
901 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
902 | payload); | |
903 | ftdi->received = 0; | |
904 | ftdi->expected = 4; | |
905 | ftdi->ed_found = 0; | |
906 | return ftdi->response; | |
907 | } else { | |
908 | target->abandoning = 0; | |
909 | mutex_unlock(&ftdi->u132_lock); | |
910 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
911 | payload); | |
912 | ftdi->received = 0; | |
913 | ftdi->expected = 4; | |
914 | ftdi->ed_found = 0; | |
915 | return ftdi->response; | |
916 | } | |
a5c66e4b TO |
917 | } |
918 | ||
919 | static char *have_ed_get_response(struct usb_ftdi *ftdi, | |
8dae693c JP |
920 | struct u132_target *target, u16 ed_length, int ed_number, int ed_type, |
921 | char *b) | |
a5c66e4b | 922 | { |
8dae693c JP |
923 | mutex_lock(&ftdi->u132_lock); |
924 | target->condition_code = TD_DEVNOTRESP; | |
925 | target->actual = (ed_length >> 0) & 0x01FF; | |
926 | target->non_null = (ed_length >> 15) & 0x0001; | |
927 | target->repeat_number = (ed_length >> 11) & 0x000F; | |
928 | mutex_unlock(&ftdi->u132_lock); | |
929 | if (target->active) | |
930 | ftdi_elan_do_callback(ftdi, target, NULL, 0); | |
931 | target->abandoning = 0; | |
932 | ftdi->received = 0; | |
933 | ftdi->expected = 4; | |
934 | ftdi->ed_found = 0; | |
935 | return ftdi->response; | |
a5c66e4b TO |
936 | } |
937 | ||
938 | ||
939 | /* | |
8dae693c JP |
940 | * The engine tries to empty the FTDI fifo |
941 | * | |
942 | * all responses found in the fifo data are dispatched thus | |
943 | * the response buffer can only ever hold a maximum sized | |
944 | * response from the Uxxx. | |
945 | * | |
946 | */ | |
a5c66e4b TO |
947 | static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi) |
948 | { | |
8dae693c JP |
949 | u8 *b = ftdi->response + ftdi->received; |
950 | int bytes_read = 0; | |
951 | int retry_on_empty = 1; | |
952 | int retry_on_timeout = 3; | |
953 | int empty_packets = 0; | |
954 | read:{ | |
955 | int packet_bytes = 0; | |
956 | int retval = usb_bulk_msg(ftdi->udev, | |
957 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
958 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
959 | &packet_bytes, 500); | |
960 | char diag[30 *3 + 4]; | |
961 | char *d = diag; | |
962 | int m = packet_bytes; | |
963 | u8 *c = ftdi->bulk_in_buffer; | |
964 | int s = (sizeof(diag) - 1) / 3; | |
965 | diag[0] = 0; | |
966 | while (s-- > 0 && m-- > 0) { | |
967 | if (s > 0 || m == 0) { | |
968 | d += sprintf(d, " %02X", *c++); | |
969 | } else | |
970 | d += sprintf(d, " .."); | |
971 | } | |
972 | if (packet_bytes > 2) { | |
973 | ftdi->bulk_in_left = packet_bytes - 2; | |
974 | ftdi->bulk_in_last = 1; | |
975 | goto have; | |
976 | } else if (retval == -ETIMEDOUT) { | |
977 | if (retry_on_timeout-- > 0) { | |
5acc6e40 | 978 | dev_err(&ftdi->udev->dev, "TIMED OUT with packet_bytes = %d with total %d bytes%s\n", |
8dae693c JP |
979 | packet_bytes, bytes_read, diag); |
980 | goto more; | |
981 | } else if (bytes_read > 0) { | |
982 | dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n", | |
983 | bytes_read, diag); | |
984 | return -ENOMEM; | |
985 | } else { | |
5acc6e40 | 986 | dev_err(&ftdi->udev->dev, "TIMED OUT with packet_bytes = %d with total %d bytes%s\n", |
8dae693c JP |
987 | packet_bytes, bytes_read, diag); |
988 | return -ENOMEM; | |
989 | } | |
990 | } else if (retval == -EILSEQ) { | |
5acc6e40 JP |
991 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n", |
992 | retval, packet_bytes, bytes_read, diag); | |
8dae693c JP |
993 | return retval; |
994 | } else if (retval) { | |
5acc6e40 JP |
995 | dev_err(&ftdi->udev->dev, "error = %d with packet_bytes = %d with total %d bytes%s\n", |
996 | retval, packet_bytes, bytes_read, diag); | |
8dae693c JP |
997 | return retval; |
998 | } else if (packet_bytes == 2) { | |
999 | unsigned char s0 = ftdi->bulk_in_buffer[0]; | |
1000 | unsigned char s1 = ftdi->bulk_in_buffer[1]; | |
1001 | empty_packets += 1; | |
1002 | if (s0 == 0x31 && s1 == 0x60) { | |
1003 | if (retry_on_empty-- > 0) { | |
1004 | goto more; | |
1005 | } else | |
1006 | return 0; | |
1007 | } else if (s0 == 0x31 && s1 == 0x00) { | |
1008 | if (retry_on_empty-- > 0) { | |
1009 | goto more; | |
1010 | } else | |
1011 | return 0; | |
1012 | } else { | |
1013 | if (retry_on_empty-- > 0) { | |
1014 | goto more; | |
1015 | } else | |
1016 | return 0; | |
1017 | } | |
1018 | } else if (packet_bytes == 1) { | |
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 | } | |
1030 | more:{ | |
1031 | goto read; | |
1032 | } | |
1033 | have:if (ftdi->bulk_in_left > 0) { | |
1034 | u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last]; | |
1035 | bytes_read += 1; | |
1036 | ftdi->bulk_in_left -= 1; | |
1037 | if (ftdi->received == 0 && c == 0xFF) { | |
1038 | goto have; | |
1039 | } else | |
1040 | *b++ = c; | |
1041 | if (++ftdi->received < ftdi->expected) { | |
1042 | goto have; | |
1043 | } else if (ftdi->ed_found) { | |
1044 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1045 | u16 ed_length = (ftdi->response[2] << 8) | | |
1046 | ftdi->response[1]; | |
1047 | struct u132_target *target = &ftdi->target[ed_number]; | |
1048 | int payload = (ed_length >> 0) & 0x07FF; | |
1049 | char diag[30 *3 + 4]; | |
1050 | char *d = diag; | |
1051 | int m = payload; | |
1052 | u8 *c = 4 + ftdi->response; | |
1053 | int s = (sizeof(diag) - 1) / 3; | |
1054 | diag[0] = 0; | |
1055 | while (s-- > 0 && m-- > 0) { | |
1056 | if (s > 0 || m == 0) { | |
1057 | d += sprintf(d, " %02X", *c++); | |
1058 | } else | |
1059 | d += sprintf(d, " .."); | |
1060 | } | |
1061 | ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response, | |
1062 | payload); | |
1063 | ftdi->received = 0; | |
1064 | ftdi->expected = 4; | |
1065 | ftdi->ed_found = 0; | |
1066 | b = ftdi->response; | |
1067 | goto have; | |
1068 | } else if (ftdi->expected == 8) { | |
1069 | u8 buscmd; | |
1070 | int respond_head = ftdi->respond_head++; | |
1071 | struct u132_respond *respond = &ftdi->respond[ | |
1072 | RESPOND_MASK & respond_head]; | |
1073 | u32 data = ftdi->response[7]; | |
1074 | data <<= 8; | |
1075 | data |= ftdi->response[6]; | |
1076 | data <<= 8; | |
1077 | data |= ftdi->response[5]; | |
1078 | data <<= 8; | |
1079 | data |= ftdi->response[4]; | |
1080 | *respond->value = data; | |
1081 | *respond->result = 0; | |
1082 | complete(&respond->wait_completion); | |
1083 | ftdi->received = 0; | |
1084 | ftdi->expected = 4; | |
1085 | ftdi->ed_found = 0; | |
1086 | b = ftdi->response; | |
1087 | buscmd = (ftdi->response[0] >> 0) & 0x0F; | |
1088 | if (buscmd == 0x00) { | |
1089 | } else if (buscmd == 0x02) { | |
1090 | } else if (buscmd == 0x06) { | |
1091 | } else if (buscmd == 0x0A) { | |
1092 | } else | |
5acc6e40 JP |
1093 | dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) value = %08X\n", |
1094 | buscmd, data); | |
8dae693c JP |
1095 | goto have; |
1096 | } else { | |
1097 | if ((ftdi->response[0] & 0x80) == 0x00) { | |
1098 | ftdi->expected = 8; | |
1099 | goto have; | |
1100 | } else { | |
1101 | int ed_number = (ftdi->response[0] >> 5) & 0x03; | |
1102 | int ed_type = (ftdi->response[0] >> 0) & 0x03; | |
1103 | u16 ed_length = (ftdi->response[2] << 8) | | |
1104 | ftdi->response[1]; | |
1105 | struct u132_target *target = &ftdi->target[ | |
1106 | ed_number]; | |
1107 | target->halted = (ftdi->response[0] >> 3) & | |
1108 | 0x01; | |
1109 | target->skipped = (ftdi->response[0] >> 2) & | |
1110 | 0x01; | |
1111 | target->toggle_bits = (ftdi->response[3] >> 6) | |
1112 | & 0x03; | |
1113 | target->error_count = (ftdi->response[3] >> 4) | |
1114 | & 0x03; | |
1115 | target->condition_code = (ftdi->response[ | |
1116 | 3] >> 0) & 0x0F; | |
1117 | if ((ftdi->response[0] & 0x10) == 0x00) { | |
1118 | b = have_ed_set_response(ftdi, target, | |
1119 | ed_length, ed_number, ed_type, | |
1120 | b); | |
1121 | goto have; | |
1122 | } else { | |
1123 | b = have_ed_get_response(ftdi, target, | |
1124 | ed_length, ed_number, ed_type, | |
1125 | b); | |
1126 | goto have; | |
1127 | } | |
1128 | } | |
1129 | } | |
1130 | } else | |
1131 | goto more; | |
a5c66e4b TO |
1132 | } |
1133 | ||
1134 | ||
1135 | /* | |
8dae693c JP |
1136 | * create a urb, and a buffer for it, and copy the data to the urb |
1137 | * | |
1138 | */ | |
a5c66e4b TO |
1139 | static ssize_t ftdi_elan_write(struct file *file, |
1140 | const char __user *user_buffer, size_t count, | |
1141 | loff_t *ppos) | |
1142 | { | |
8dae693c JP |
1143 | int retval = 0; |
1144 | struct urb *urb; | |
1145 | char *buf; | |
1146 | struct usb_ftdi *ftdi = file->private_data; | |
1147 | ||
1148 | if (ftdi->disconnected > 0) { | |
1149 | return -ENODEV; | |
1150 | } | |
1151 | if (count == 0) { | |
1152 | goto exit; | |
1153 | } | |
1154 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1155 | if (!urb) { | |
1156 | retval = -ENOMEM; | |
1157 | goto error_1; | |
1158 | } | |
1159 | buf = usb_alloc_coherent(ftdi->udev, count, GFP_KERNEL, | |
1160 | &urb->transfer_dma); | |
1161 | if (!buf) { | |
1162 | retval = -ENOMEM; | |
1163 | goto error_2; | |
1164 | } | |
1165 | if (copy_from_user(buf, user_buffer, count)) { | |
1166 | retval = -EFAULT; | |
1167 | goto error_3; | |
1168 | } | |
1169 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
1170 | ftdi->bulk_out_endpointAddr), buf, count, | |
1171 | ftdi_elan_write_bulk_callback, ftdi); | |
1172 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1173 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1174 | if (retval) { | |
90ba4f79 JP |
1175 | dev_err(&ftdi->udev->dev, |
1176 | "failed submitting write urb, error %d\n", retval); | |
8dae693c JP |
1177 | goto error_3; |
1178 | } | |
1179 | usb_free_urb(urb); | |
96a51892 GKH |
1180 | |
1181 | exit: | |
8dae693c | 1182 | return count; |
96a51892 | 1183 | error_3: |
997ea58e | 1184 | usb_free_coherent(ftdi->udev, count, buf, urb->transfer_dma); |
96a51892 GKH |
1185 | error_2: |
1186 | usb_free_urb(urb); | |
1187 | error_1: | |
1188 | return retval; | |
a5c66e4b TO |
1189 | } |
1190 | ||
00977a59 | 1191 | static const struct file_operations ftdi_elan_fops = { |
8dae693c JP |
1192 | .owner = THIS_MODULE, |
1193 | .llseek = no_llseek, | |
1194 | .read = ftdi_elan_read, | |
1195 | .write = ftdi_elan_write, | |
1196 | .open = ftdi_elan_open, | |
1197 | .release = ftdi_elan_release, | |
a5c66e4b TO |
1198 | }; |
1199 | ||
1200 | /* | |
8dae693c JP |
1201 | * usb class driver info in order to get a minor number from the usb core, |
1202 | * and to have the device registered with the driver core | |
1203 | */ | |
a5c66e4b | 1204 | static struct usb_class_driver ftdi_elan_jtag_class = { |
8dae693c JP |
1205 | .name = "ftdi-%d-jtag", |
1206 | .fops = &ftdi_elan_fops, | |
1207 | .minor_base = USB_FTDI_ELAN_MINOR_BASE, | |
a5c66e4b TO |
1208 | }; |
1209 | ||
1210 | /* | |
8dae693c JP |
1211 | * the following definitions are for the |
1212 | * ELAN FPGA state machgine processor that | |
1213 | * lies on the other side of the FTDI chip | |
1214 | */ | |
a5c66e4b TO |
1215 | #define cPCIu132rd 0x0 |
1216 | #define cPCIu132wr 0x1 | |
1217 | #define cPCIiord 0x2 | |
1218 | #define cPCIiowr 0x3 | |
1219 | #define cPCImemrd 0x6 | |
1220 | #define cPCImemwr 0x7 | |
1221 | #define cPCIcfgrd 0xA | |
1222 | #define cPCIcfgwr 0xB | |
1223 | #define cPCInull 0xF | |
1224 | #define cU132cmd_status 0x0 | |
1225 | #define cU132flash 0x1 | |
1226 | #define cPIDsetup 0x0 | |
1227 | #define cPIDout 0x1 | |
1228 | #define cPIDin 0x2 | |
1229 | #define cPIDinonce 0x3 | |
1230 | #define cCCnoerror 0x0 | |
1231 | #define cCCcrc 0x1 | |
1232 | #define cCCbitstuff 0x2 | |
1233 | #define cCCtoggle 0x3 | |
1234 | #define cCCstall 0x4 | |
1235 | #define cCCnoresp 0x5 | |
1236 | #define cCCbadpid1 0x6 | |
1237 | #define cCCbadpid2 0x7 | |
1238 | #define cCCdataoverrun 0x8 | |
1239 | #define cCCdataunderrun 0x9 | |
1240 | #define cCCbuffoverrun 0xC | |
1241 | #define cCCbuffunderrun 0xD | |
1242 | #define cCCnotaccessed 0xF | |
1243 | static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data) | |
1244 | { | |
8dae693c JP |
1245 | wait:if (ftdi->disconnected > 0) { |
1246 | return -ENODEV; | |
1247 | } else { | |
1248 | int command_size; | |
1249 | mutex_lock(&ftdi->u132_lock); | |
1250 | command_size = ftdi->command_next - ftdi->command_head; | |
1251 | if (command_size < COMMAND_SIZE) { | |
1252 | struct u132_command *command = &ftdi->command[ | |
1253 | COMMAND_MASK & ftdi->command_next]; | |
1254 | command->header = 0x00 | cPCIu132wr; | |
1255 | command->length = 0x04; | |
1256 | command->address = 0x00; | |
1257 | command->width = 0x00; | |
1258 | command->follows = 4; | |
1259 | command->value = data; | |
1260 | command->buffer = &command->value; | |
1261 | ftdi->command_next += 1; | |
1262 | ftdi_elan_kick_command_queue(ftdi); | |
1263 | mutex_unlock(&ftdi->u132_lock); | |
1264 | return 0; | |
1265 | } else { | |
1266 | mutex_unlock(&ftdi->u132_lock); | |
1267 | msleep(100); | |
1268 | goto wait; | |
1269 | } | |
1270 | } | |
a5c66e4b TO |
1271 | } |
1272 | ||
1273 | static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset, | |
8dae693c JP |
1274 | u8 width, u32 data) |
1275 | { | |
1276 | u8 addressofs = config_offset / 4; | |
1277 | wait:if (ftdi->disconnected > 0) { | |
1278 | return -ENODEV; | |
1279 | } else { | |
1280 | int command_size; | |
1281 | mutex_lock(&ftdi->u132_lock); | |
1282 | command_size = ftdi->command_next - ftdi->command_head; | |
1283 | if (command_size < COMMAND_SIZE) { | |
1284 | struct u132_command *command = &ftdi->command[ | |
1285 | COMMAND_MASK & ftdi->command_next]; | |
1286 | command->header = 0x00 | (cPCIcfgwr & 0x0F); | |
1287 | command->length = 0x04; | |
1288 | command->address = addressofs; | |
1289 | command->width = 0x00 | (width & 0x0F); | |
1290 | command->follows = 4; | |
1291 | command->value = data; | |
1292 | command->buffer = &command->value; | |
1293 | ftdi->command_next += 1; | |
1294 | ftdi_elan_kick_command_queue(ftdi); | |
1295 | mutex_unlock(&ftdi->u132_lock); | |
1296 | return 0; | |
1297 | } else { | |
1298 | mutex_unlock(&ftdi->u132_lock); | |
1299 | msleep(100); | |
1300 | goto wait; | |
1301 | } | |
1302 | } | |
a5c66e4b TO |
1303 | } |
1304 | ||
1305 | static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
8dae693c JP |
1306 | u8 width, u32 data) |
1307 | { | |
1308 | u8 addressofs = mem_offset / 4; | |
1309 | wait:if (ftdi->disconnected > 0) { | |
1310 | return -ENODEV; | |
1311 | } else { | |
1312 | int command_size; | |
1313 | mutex_lock(&ftdi->u132_lock); | |
1314 | command_size = ftdi->command_next - ftdi->command_head; | |
1315 | if (command_size < COMMAND_SIZE) { | |
1316 | struct u132_command *command = &ftdi->command[ | |
1317 | COMMAND_MASK & ftdi->command_next]; | |
1318 | command->header = 0x00 | (cPCImemwr & 0x0F); | |
1319 | command->length = 0x04; | |
1320 | command->address = addressofs; | |
1321 | command->width = 0x00 | (width & 0x0F); | |
1322 | command->follows = 4; | |
1323 | command->value = data; | |
1324 | command->buffer = &command->value; | |
1325 | ftdi->command_next += 1; | |
1326 | ftdi_elan_kick_command_queue(ftdi); | |
1327 | mutex_unlock(&ftdi->u132_lock); | |
1328 | return 0; | |
1329 | } else { | |
1330 | mutex_unlock(&ftdi->u132_lock); | |
1331 | msleep(100); | |
1332 | goto wait; | |
1333 | } | |
1334 | } | |
a5c66e4b TO |
1335 | } |
1336 | ||
1337 | int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset, | |
8dae693c | 1338 | u8 width, u32 data) |
a5c66e4b | 1339 | { |
8dae693c JP |
1340 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1341 | return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data); | |
a5c66e4b TO |
1342 | } |
1343 | ||
1344 | ||
1345 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem); | |
1346 | static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data) | |
1347 | { | |
8dae693c JP |
1348 | wait:if (ftdi->disconnected > 0) { |
1349 | return -ENODEV; | |
1350 | } else { | |
1351 | int command_size; | |
1352 | int respond_size; | |
1353 | mutex_lock(&ftdi->u132_lock); | |
1354 | command_size = ftdi->command_next - ftdi->command_head; | |
1355 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1356 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1357 | { | |
1358 | struct u132_command *command = &ftdi->command[ | |
1359 | COMMAND_MASK & ftdi->command_next]; | |
1360 | struct u132_respond *respond = &ftdi->respond[ | |
1361 | RESPOND_MASK & ftdi->respond_next]; | |
1362 | int result = -ENODEV; | |
1363 | respond->result = &result; | |
1364 | respond->header = command->header = 0x00 | cPCIu132rd; | |
1365 | command->length = 0x04; | |
1366 | respond->address = command->address = cU132cmd_status; | |
1367 | command->width = 0x00; | |
1368 | command->follows = 0; | |
1369 | command->value = 0; | |
1370 | command->buffer = NULL; | |
1371 | respond->value = data; | |
1372 | init_completion(&respond->wait_completion); | |
1373 | ftdi->command_next += 1; | |
1374 | ftdi->respond_next += 1; | |
1375 | ftdi_elan_kick_command_queue(ftdi); | |
1376 | mutex_unlock(&ftdi->u132_lock); | |
1377 | wait_for_completion(&respond->wait_completion); | |
1378 | return result; | |
1379 | } else { | |
1380 | mutex_unlock(&ftdi->u132_lock); | |
1381 | msleep(100); | |
1382 | goto wait; | |
1383 | } | |
1384 | } | |
a5c66e4b TO |
1385 | } |
1386 | ||
a5c66e4b | 1387 | static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset, |
8dae693c JP |
1388 | u8 width, u32 *data) |
1389 | { | |
1390 | u8 addressofs = config_offset / 4; | |
1391 | wait:if (ftdi->disconnected > 0) { | |
1392 | return -ENODEV; | |
1393 | } else { | |
1394 | int command_size; | |
1395 | int respond_size; | |
1396 | mutex_lock(&ftdi->u132_lock); | |
1397 | command_size = ftdi->command_next - ftdi->command_head; | |
1398 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1399 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1400 | { | |
1401 | struct u132_command *command = &ftdi->command[ | |
1402 | COMMAND_MASK & ftdi->command_next]; | |
1403 | struct u132_respond *respond = &ftdi->respond[ | |
1404 | RESPOND_MASK & ftdi->respond_next]; | |
1405 | int result = -ENODEV; | |
1406 | respond->result = &result; | |
1407 | respond->header = command->header = 0x00 | (cPCIcfgrd & | |
1408 | 0x0F); | |
1409 | command->length = 0x04; | |
1410 | respond->address = command->address = addressofs; | |
1411 | command->width = 0x00 | (width & 0x0F); | |
1412 | command->follows = 0; | |
1413 | command->value = 0; | |
1414 | command->buffer = NULL; | |
1415 | respond->value = data; | |
1416 | init_completion(&respond->wait_completion); | |
1417 | ftdi->command_next += 1; | |
1418 | ftdi->respond_next += 1; | |
1419 | ftdi_elan_kick_command_queue(ftdi); | |
1420 | mutex_unlock(&ftdi->u132_lock); | |
1421 | wait_for_completion(&respond->wait_completion); | |
1422 | return result; | |
1423 | } else { | |
1424 | mutex_unlock(&ftdi->u132_lock); | |
1425 | msleep(100); | |
1426 | goto wait; | |
1427 | } | |
1428 | } | |
a5c66e4b TO |
1429 | } |
1430 | ||
1431 | static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset, | |
8dae693c JP |
1432 | u8 width, u32 *data) |
1433 | { | |
1434 | u8 addressofs = mem_offset / 4; | |
1435 | wait:if (ftdi->disconnected > 0) { | |
1436 | return -ENODEV; | |
1437 | } else { | |
1438 | int command_size; | |
1439 | int respond_size; | |
1440 | mutex_lock(&ftdi->u132_lock); | |
1441 | command_size = ftdi->command_next - ftdi->command_head; | |
1442 | respond_size = ftdi->respond_next - ftdi->respond_head; | |
1443 | if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE) | |
1444 | { | |
1445 | struct u132_command *command = &ftdi->command[ | |
1446 | COMMAND_MASK & ftdi->command_next]; | |
1447 | struct u132_respond *respond = &ftdi->respond[ | |
1448 | RESPOND_MASK & ftdi->respond_next]; | |
1449 | int result = -ENODEV; | |
1450 | respond->result = &result; | |
1451 | respond->header = command->header = 0x00 | (cPCImemrd & | |
1452 | 0x0F); | |
1453 | command->length = 0x04; | |
1454 | respond->address = command->address = addressofs; | |
1455 | command->width = 0x00 | (width & 0x0F); | |
1456 | command->follows = 0; | |
1457 | command->value = 0; | |
1458 | command->buffer = NULL; | |
1459 | respond->value = data; | |
1460 | init_completion(&respond->wait_completion); | |
1461 | ftdi->command_next += 1; | |
1462 | ftdi->respond_next += 1; | |
1463 | ftdi_elan_kick_command_queue(ftdi); | |
1464 | mutex_unlock(&ftdi->u132_lock); | |
1465 | wait_for_completion(&respond->wait_completion); | |
1466 | return result; | |
1467 | } else { | |
1468 | mutex_unlock(&ftdi->u132_lock); | |
1469 | msleep(100); | |
1470 | goto wait; | |
1471 | } | |
1472 | } | |
a5c66e4b TO |
1473 | } |
1474 | ||
1475 | int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset, | |
8dae693c | 1476 | u8 width, u32 *data) |
a5c66e4b | 1477 | { |
8dae693c JP |
1478 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1479 | if (ftdi->initialized == 0) { | |
1480 | return -ENODEV; | |
1481 | } else | |
1482 | return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data); | |
a5c66e4b TO |
1483 | } |
1484 | ||
1485 | ||
1486 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem); | |
1487 | static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1488 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1489 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1490 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1491 | int halted, int skipped, int actual, int non_null)) | |
1492 | { | |
1493 | u8 ed = ed_number - 1; | |
1494 | wait:if (ftdi->disconnected > 0) { | |
1495 | return -ENODEV; | |
1496 | } else if (ftdi->initialized == 0) { | |
1497 | return -ENODEV; | |
1498 | } else { | |
1499 | int command_size; | |
1500 | mutex_lock(&ftdi->u132_lock); | |
1501 | command_size = ftdi->command_next - ftdi->command_head; | |
1502 | if (command_size < COMMAND_SIZE) { | |
1503 | struct u132_target *target = &ftdi->target[ed]; | |
1504 | struct u132_command *command = &ftdi->command[ | |
1505 | COMMAND_MASK & ftdi->command_next]; | |
1506 | command->header = 0x80 | (ed << 5); | |
1507 | command->length = 0x8007; | |
1508 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1509 | | (address << 0); | |
1510 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1511 | usb_pipeout(urb->pipe)); | |
1512 | command->follows = 8; | |
1513 | command->value = 0; | |
1514 | command->buffer = urb->setup_packet; | |
1515 | target->callback = callback; | |
1516 | target->endp = endp; | |
1517 | target->urb = urb; | |
1518 | target->active = 1; | |
1519 | ftdi->command_next += 1; | |
1520 | ftdi_elan_kick_command_queue(ftdi); | |
1521 | mutex_unlock(&ftdi->u132_lock); | |
1522 | return 0; | |
1523 | } else { | |
1524 | mutex_unlock(&ftdi->u132_lock); | |
1525 | msleep(100); | |
1526 | goto wait; | |
1527 | } | |
1528 | } | |
a5c66e4b TO |
1529 | } |
1530 | ||
1531 | int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number, | |
8dae693c JP |
1532 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1533 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1534 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1535 | int halted, int skipped, int actual, int non_null)) | |
a5c66e4b | 1536 | { |
8dae693c JP |
1537 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1538 | return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address, | |
1539 | ep_number, toggle_bits, callback); | |
a5c66e4b TO |
1540 | } |
1541 | ||
1542 | ||
1543 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup); | |
1544 | static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1545 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1546 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1547 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1548 | int halted, int skipped, int actual, int non_null)) | |
1549 | { | |
1550 | u8 ed = ed_number - 1; | |
1551 | wait:if (ftdi->disconnected > 0) { | |
1552 | return -ENODEV; | |
1553 | } else if (ftdi->initialized == 0) { | |
1554 | return -ENODEV; | |
1555 | } else { | |
1556 | int command_size; | |
1557 | mutex_lock(&ftdi->u132_lock); | |
1558 | command_size = ftdi->command_next - ftdi->command_head; | |
1559 | if (command_size < COMMAND_SIZE) { | |
1560 | struct u132_target *target = &ftdi->target[ed]; | |
1561 | struct u132_command *command = &ftdi->command[ | |
1562 | COMMAND_MASK & ftdi->command_next]; | |
1563 | u32 remaining_length = urb->transfer_buffer_length - | |
1564 | urb->actual_length; | |
1565 | command->header = 0x82 | (ed << 5); | |
1566 | if (remaining_length == 0) { | |
1567 | command->length = 0x0000; | |
1568 | } else if (remaining_length > 1024) { | |
1569 | command->length = 0x8000 | 1023; | |
1570 | } else | |
1571 | command->length = 0x8000 | (remaining_length - | |
1572 | 1); | |
1573 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1574 | | (address << 0); | |
1575 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1576 | usb_pipeout(urb->pipe)); | |
1577 | command->follows = 0; | |
1578 | command->value = 0; | |
1579 | command->buffer = NULL; | |
1580 | target->callback = callback; | |
1581 | target->endp = endp; | |
1582 | target->urb = urb; | |
1583 | target->active = 1; | |
1584 | ftdi->command_next += 1; | |
1585 | ftdi_elan_kick_command_queue(ftdi); | |
1586 | mutex_unlock(&ftdi->u132_lock); | |
1587 | return 0; | |
1588 | } else { | |
1589 | mutex_unlock(&ftdi->u132_lock); | |
1590 | msleep(100); | |
1591 | goto wait; | |
1592 | } | |
1593 | } | |
a5c66e4b TO |
1594 | } |
1595 | ||
1596 | int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number, | |
8dae693c JP |
1597 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1598 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1599 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1600 | int halted, int skipped, int actual, int non_null)) | |
a5c66e4b | 1601 | { |
8dae693c JP |
1602 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1603 | return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address, | |
1604 | ep_number, toggle_bits, callback); | |
a5c66e4b TO |
1605 | } |
1606 | ||
1607 | ||
1608 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input); | |
1609 | static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1610 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1611 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1612 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1613 | int halted, int skipped, int actual, int non_null)) | |
1614 | { | |
1615 | u8 ed = ed_number - 1; | |
1616 | wait:if (ftdi->disconnected > 0) { | |
1617 | return -ENODEV; | |
1618 | } else if (ftdi->initialized == 0) { | |
1619 | return -ENODEV; | |
1620 | } else { | |
1621 | int command_size; | |
1622 | mutex_lock(&ftdi->u132_lock); | |
1623 | command_size = ftdi->command_next - ftdi->command_head; | |
1624 | if (command_size < COMMAND_SIZE) { | |
1625 | struct u132_target *target = &ftdi->target[ed]; | |
1626 | struct u132_command *command = &ftdi->command[ | |
1627 | COMMAND_MASK & ftdi->command_next]; | |
1628 | command->header = 0x81 | (ed << 5); | |
1629 | command->length = 0x0000; | |
1630 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1631 | | (address << 0); | |
1632 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1633 | usb_pipeout(urb->pipe)); | |
1634 | command->follows = 0; | |
1635 | command->value = 0; | |
1636 | command->buffer = NULL; | |
1637 | target->callback = callback; | |
1638 | target->endp = endp; | |
1639 | target->urb = urb; | |
1640 | target->active = 1; | |
1641 | ftdi->command_next += 1; | |
1642 | ftdi_elan_kick_command_queue(ftdi); | |
1643 | mutex_unlock(&ftdi->u132_lock); | |
1644 | return 0; | |
1645 | } else { | |
1646 | mutex_unlock(&ftdi->u132_lock); | |
1647 | msleep(100); | |
1648 | goto wait; | |
1649 | } | |
1650 | } | |
a5c66e4b TO |
1651 | } |
1652 | ||
1653 | int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number, | |
8dae693c JP |
1654 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1655 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1656 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1657 | int halted, int skipped, int actual, int non_null)) | |
a5c66e4b | 1658 | { |
8dae693c JP |
1659 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1660 | return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address, | |
1661 | ep_number, toggle_bits, callback); | |
a5c66e4b TO |
1662 | } |
1663 | ||
1664 | ||
1665 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty); | |
1666 | static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1667 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1668 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1669 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1670 | int halted, int skipped, int actual, int non_null)) | |
1671 | { | |
1672 | u8 ed = ed_number - 1; | |
1673 | wait:if (ftdi->disconnected > 0) { | |
1674 | return -ENODEV; | |
1675 | } else if (ftdi->initialized == 0) { | |
1676 | return -ENODEV; | |
1677 | } else { | |
1678 | int command_size; | |
1679 | mutex_lock(&ftdi->u132_lock); | |
1680 | command_size = ftdi->command_next - ftdi->command_head; | |
1681 | if (command_size < COMMAND_SIZE) { | |
1682 | u8 *b; | |
1683 | u16 urb_size; | |
1684 | int i = 0; | |
1685 | char data[30 *3 + 4]; | |
1686 | char *d = data; | |
1687 | int m = (sizeof(data) - 1) / 3; | |
1688 | int l = 0; | |
1689 | struct u132_target *target = &ftdi->target[ed]; | |
1690 | struct u132_command *command = &ftdi->command[ | |
1691 | COMMAND_MASK & ftdi->command_next]; | |
1692 | command->header = 0x81 | (ed << 5); | |
1693 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1694 | | (address << 0); | |
1695 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1696 | usb_pipeout(urb->pipe)); | |
1697 | command->follows = min_t(u32, 1024, | |
1698 | urb->transfer_buffer_length - | |
1699 | urb->actual_length); | |
1700 | command->value = 0; | |
1701 | command->buffer = urb->transfer_buffer + | |
1702 | urb->actual_length; | |
1703 | command->length = 0x8000 | (command->follows - 1); | |
1704 | b = command->buffer; | |
1705 | urb_size = command->follows; | |
1706 | data[0] = 0; | |
1707 | while (urb_size-- > 0) { | |
1708 | if (i > m) { | |
1709 | } else if (i++ < m) { | |
1710 | int w = sprintf(d, " %02X", *b++); | |
1711 | d += w; | |
1712 | l += w; | |
1713 | } else | |
1714 | d += sprintf(d, " .."); | |
1715 | } | |
1716 | target->callback = callback; | |
1717 | target->endp = endp; | |
1718 | target->urb = urb; | |
1719 | target->active = 1; | |
1720 | ftdi->command_next += 1; | |
1721 | ftdi_elan_kick_command_queue(ftdi); | |
1722 | mutex_unlock(&ftdi->u132_lock); | |
1723 | return 0; | |
1724 | } else { | |
1725 | mutex_unlock(&ftdi->u132_lock); | |
1726 | msleep(100); | |
1727 | goto wait; | |
1728 | } | |
1729 | } | |
a5c66e4b TO |
1730 | } |
1731 | ||
1732 | int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number, | |
8dae693c JP |
1733 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1734 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1735 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1736 | int halted, int skipped, int actual, int non_null)) | |
a5c66e4b | 1737 | { |
8dae693c JP |
1738 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1739 | return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address, | |
1740 | ep_number, toggle_bits, callback); | |
a5c66e4b TO |
1741 | } |
1742 | ||
1743 | ||
1744 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output); | |
1745 | static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1746 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1747 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1748 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1749 | int halted, int skipped, int actual, int non_null)) | |
1750 | { | |
1751 | u8 ed = ed_number - 1; | |
1752 | wait:if (ftdi->disconnected > 0) { | |
1753 | return -ENODEV; | |
1754 | } else if (ftdi->initialized == 0) { | |
1755 | return -ENODEV; | |
1756 | } else { | |
1757 | int command_size; | |
1758 | mutex_lock(&ftdi->u132_lock); | |
1759 | command_size = ftdi->command_next - ftdi->command_head; | |
1760 | if (command_size < COMMAND_SIZE) { | |
1761 | u32 remaining_length = urb->transfer_buffer_length - | |
1762 | urb->actual_length; | |
1763 | struct u132_target *target = &ftdi->target[ed]; | |
1764 | struct u132_command *command = &ftdi->command[ | |
1765 | COMMAND_MASK & ftdi->command_next]; | |
1766 | command->header = 0x83 | (ed << 5); | |
1767 | if (remaining_length == 0) { | |
1768 | command->length = 0x0000; | |
1769 | } else if (remaining_length > 1024) { | |
1770 | command->length = 0x8000 | 1023; | |
1771 | } else | |
1772 | command->length = 0x8000 | (remaining_length - | |
1773 | 1); | |
1774 | command->address = (toggle_bits << 6) | (ep_number << 2) | |
1775 | | (address << 0); | |
1776 | command->width = usb_maxpacket(urb->dev, urb->pipe, | |
1777 | usb_pipeout(urb->pipe)); | |
1778 | command->follows = 0; | |
1779 | command->value = 0; | |
1780 | command->buffer = NULL; | |
1781 | target->callback = callback; | |
1782 | target->endp = endp; | |
1783 | target->urb = urb; | |
1784 | target->active = 1; | |
1785 | ftdi->command_next += 1; | |
1786 | ftdi_elan_kick_command_queue(ftdi); | |
1787 | mutex_unlock(&ftdi->u132_lock); | |
1788 | return 0; | |
1789 | } else { | |
1790 | mutex_unlock(&ftdi->u132_lock); | |
1791 | msleep(100); | |
1792 | goto wait; | |
1793 | } | |
1794 | } | |
a5c66e4b TO |
1795 | } |
1796 | ||
1797 | int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number, | |
8dae693c JP |
1798 | void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits, |
1799 | void (*callback) (void *endp, struct urb *urb, u8 *buf, int len, | |
1800 | int toggle_bits, int error_count, int condition_code, int repeat_number, | |
1801 | int halted, int skipped, int actual, int non_null)) | |
a5c66e4b | 1802 | { |
8dae693c JP |
1803 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1804 | return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address, | |
1805 | ep_number, toggle_bits, callback); | |
a5c66e4b TO |
1806 | } |
1807 | ||
1808 | ||
1809 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single); | |
1810 | static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number, | |
8dae693c JP |
1811 | void *endp) |
1812 | { | |
1813 | u8 ed = ed_number - 1; | |
1814 | if (ftdi->disconnected > 0) { | |
1815 | return -ENODEV; | |
1816 | } else if (ftdi->initialized == 0) { | |
1817 | return -ENODEV; | |
1818 | } else { | |
1819 | struct u132_target *target = &ftdi->target[ed]; | |
1820 | mutex_lock(&ftdi->u132_lock); | |
1821 | if (target->abandoning > 0) { | |
1822 | mutex_unlock(&ftdi->u132_lock); | |
1823 | return 0; | |
1824 | } else { | |
1825 | target->abandoning = 1; | |
1826 | wait_1:if (target->active == 1) { | |
1827 | int command_size = ftdi->command_next - | |
1828 | ftdi->command_head; | |
1829 | if (command_size < COMMAND_SIZE) { | |
1830 | struct u132_command *command = | |
1831 | &ftdi->command[COMMAND_MASK & | |
1832 | ftdi->command_next]; | |
1833 | command->header = 0x80 | (ed << 5) | | |
1834 | 0x4; | |
1835 | command->length = 0x00; | |
1836 | command->address = 0x00; | |
1837 | command->width = 0x00; | |
1838 | command->follows = 0; | |
1839 | command->value = 0; | |
1840 | command->buffer = &command->value; | |
1841 | ftdi->command_next += 1; | |
1842 | ftdi_elan_kick_command_queue(ftdi); | |
1843 | } else { | |
1844 | mutex_unlock(&ftdi->u132_lock); | |
1845 | msleep(100); | |
1846 | mutex_lock(&ftdi->u132_lock); | |
1847 | goto wait_1; | |
1848 | } | |
1849 | } | |
1850 | mutex_unlock(&ftdi->u132_lock); | |
1851 | return 0; | |
1852 | } | |
1853 | } | |
a5c66e4b TO |
1854 | } |
1855 | ||
1856 | int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number, | |
8dae693c | 1857 | void *endp) |
a5c66e4b | 1858 | { |
8dae693c JP |
1859 | struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev); |
1860 | return ftdi_elan_edset_flush(ftdi, ed_number, endp); | |
a5c66e4b TO |
1861 | } |
1862 | ||
1863 | ||
1864 | EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush); | |
1865 | static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi) | |
1866 | { | |
8dae693c JP |
1867 | int retry_on_empty = 10; |
1868 | int retry_on_timeout = 5; | |
1869 | int retry_on_status = 20; | |
1870 | more:{ | |
1871 | int packet_bytes = 0; | |
1872 | int retval = usb_bulk_msg(ftdi->udev, | |
1873 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
1874 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
1875 | &packet_bytes, 100); | |
1876 | if (packet_bytes > 2) { | |
1877 | char diag[30 *3 + 4]; | |
1878 | char *d = diag; | |
1879 | int m = (sizeof(diag) - 1) / 3; | |
1880 | char *b = ftdi->bulk_in_buffer; | |
1881 | int bytes_read = 0; | |
1882 | diag[0] = 0; | |
1883 | while (packet_bytes-- > 0) { | |
1884 | char c = *b++; | |
1885 | if (bytes_read < m) { | |
1886 | d += sprintf(d, " %02X", | |
1887 | 0x000000FF & c); | |
1888 | } else if (bytes_read > m) { | |
1889 | } else | |
1890 | d += sprintf(d, " .."); | |
1891 | bytes_read += 1; | |
1892 | continue; | |
1893 | } | |
1894 | goto more; | |
1895 | } else if (packet_bytes > 1) { | |
1896 | char s1 = ftdi->bulk_in_buffer[0]; | |
1897 | char s2 = ftdi->bulk_in_buffer[1]; | |
1898 | if (s1 == 0x31 && s2 == 0x60) { | |
1899 | return 0; | |
1900 | } else if (retry_on_status-- > 0) { | |
1901 | goto more; | |
1902 | } else { | |
5acc6e40 | 1903 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); |
8dae693c JP |
1904 | return -EFAULT; |
1905 | } | |
1906 | } else if (packet_bytes > 0) { | |
1907 | char b1 = ftdi->bulk_in_buffer[0]; | |
5acc6e40 JP |
1908 | dev_err(&ftdi->udev->dev, "only one byte flushed from FTDI = %02X\n", |
1909 | b1); | |
8dae693c JP |
1910 | if (retry_on_status-- > 0) { |
1911 | goto more; | |
1912 | } else { | |
5acc6e40 | 1913 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); |
8dae693c JP |
1914 | return -EFAULT; |
1915 | } | |
1916 | } else if (retval == -ETIMEDOUT) { | |
1917 | if (retry_on_timeout-- > 0) { | |
1918 | goto more; | |
1919 | } else { | |
5acc6e40 | 1920 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); |
8dae693c JP |
1921 | return -ENOMEM; |
1922 | } | |
1923 | } else if (retval == 0) { | |
1924 | if (retry_on_empty-- > 0) { | |
1925 | goto more; | |
1926 | } else { | |
5acc6e40 | 1927 | dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); |
8dae693c JP |
1928 | return -ENOMEM; |
1929 | } | |
1930 | } else { | |
1931 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
1932 | return retval; | |
1933 | } | |
1934 | } | |
1935 | return -1; | |
a5c66e4b TO |
1936 | } |
1937 | ||
1938 | ||
1939 | /* | |
8dae693c JP |
1940 | * send the long flush sequence |
1941 | * | |
1942 | */ | |
a5c66e4b TO |
1943 | static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi) |
1944 | { | |
8dae693c JP |
1945 | int retval; |
1946 | struct urb *urb; | |
1947 | char *buf; | |
1948 | int I = 257; | |
1949 | int i = 0; | |
1950 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1951 | if (!urb) { | |
5acc6e40 | 1952 | dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequence\n"); |
8dae693c JP |
1953 | return -ENOMEM; |
1954 | } | |
1955 | buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); | |
1956 | if (!buf) { | |
5acc6e40 | 1957 | dev_err(&ftdi->udev->dev, "could not get a buffer for flush sequence\n"); |
8dae693c JP |
1958 | usb_free_urb(urb); |
1959 | return -ENOMEM; | |
1960 | } | |
1961 | while (I-- > 0) | |
1962 | buf[i++] = 0x55; | |
1963 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
1964 | ftdi->bulk_out_endpointAddr), buf, i, | |
1965 | ftdi_elan_write_bulk_callback, ftdi); | |
1966 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
1967 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
1968 | if (retval) { | |
5acc6e40 | 1969 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the flush sequence\n"); |
8dae693c JP |
1970 | usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); |
1971 | usb_free_urb(urb); | |
1972 | return -ENOMEM; | |
1973 | } | |
1974 | usb_free_urb(urb); | |
1975 | return 0; | |
a5c66e4b TO |
1976 | } |
1977 | ||
1978 | ||
1979 | /* | |
8dae693c JP |
1980 | * send the reset sequence |
1981 | * | |
1982 | */ | |
a5c66e4b TO |
1983 | static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi) |
1984 | { | |
8dae693c JP |
1985 | int retval; |
1986 | struct urb *urb; | |
1987 | char *buf; | |
1988 | int I = 4; | |
1989 | int i = 0; | |
1990 | urb = usb_alloc_urb(0, GFP_KERNEL); | |
1991 | if (!urb) { | |
5acc6e40 | 1992 | dev_err(&ftdi->udev->dev, "could not get a urb for the reset sequence\n"); |
8dae693c JP |
1993 | return -ENOMEM; |
1994 | } | |
1995 | buf = usb_alloc_coherent(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma); | |
1996 | if (!buf) { | |
5acc6e40 | 1997 | dev_err(&ftdi->udev->dev, "could not get a buffer for the reset sequence\n"); |
8dae693c JP |
1998 | usb_free_urb(urb); |
1999 | return -ENOMEM; | |
2000 | } | |
2001 | buf[i++] = 0x55; | |
2002 | buf[i++] = 0xAA; | |
2003 | buf[i++] = 0x5A; | |
2004 | buf[i++] = 0xA5; | |
2005 | usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev, | |
2006 | ftdi->bulk_out_endpointAddr), buf, i, | |
2007 | ftdi_elan_write_bulk_callback, ftdi); | |
2008 | urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; | |
2009 | retval = usb_submit_urb(urb, GFP_KERNEL); | |
2010 | if (retval) { | |
5acc6e40 | 2011 | dev_err(&ftdi->udev->dev, "failed to submit urb containing the reset sequence\n"); |
8dae693c JP |
2012 | usb_free_coherent(ftdi->udev, i, buf, urb->transfer_dma); |
2013 | usb_free_urb(urb); | |
2014 | return -ENOMEM; | |
2015 | } | |
2016 | usb_free_urb(urb); | |
2017 | return 0; | |
a5c66e4b TO |
2018 | } |
2019 | ||
2020 | static int ftdi_elan_synchronize(struct usb_ftdi *ftdi) | |
2021 | { | |
8dae693c JP |
2022 | int retval; |
2023 | int long_stop = 10; | |
2024 | int retry_on_timeout = 5; | |
2025 | int retry_on_empty = 10; | |
2026 | int err_count = 0; | |
2027 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2028 | if (retval) | |
2029 | return retval; | |
2030 | ftdi->bulk_in_left = 0; | |
2031 | ftdi->bulk_in_last = -1; | |
2032 | while (long_stop-- > 0) { | |
2033 | int read_stop; | |
2034 | int read_stuck; | |
2035 | retval = ftdi_elan_synchronize_flush(ftdi); | |
2036 | if (retval) | |
2037 | return retval; | |
2038 | retval = ftdi_elan_flush_input_fifo(ftdi); | |
2039 | if (retval) | |
2040 | return retval; | |
2041 | reset:retval = ftdi_elan_synchronize_reset(ftdi); | |
2042 | if (retval) | |
2043 | return retval; | |
2044 | read_stop = 100; | |
2045 | read_stuck = 10; | |
2046 | read:{ | |
2047 | int packet_bytes = 0; | |
2048 | retval = usb_bulk_msg(ftdi->udev, | |
2049 | usb_rcvbulkpipe(ftdi->udev, | |
2050 | ftdi->bulk_in_endpointAddr), | |
2051 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
2052 | &packet_bytes, 500); | |
2053 | if (packet_bytes > 2) { | |
2054 | char diag[30 *3 + 4]; | |
2055 | char *d = diag; | |
2056 | int m = (sizeof(diag) - 1) / 3; | |
2057 | char *b = ftdi->bulk_in_buffer; | |
2058 | int bytes_read = 0; | |
2059 | unsigned char c = 0; | |
2060 | diag[0] = 0; | |
2061 | while (packet_bytes-- > 0) { | |
2062 | c = *b++; | |
2063 | if (bytes_read < m) { | |
2064 | d += sprintf(d, " %02X", c); | |
2065 | } else if (bytes_read > m) { | |
2066 | } else | |
2067 | d += sprintf(d, " .."); | |
2068 | bytes_read += 1; | |
2069 | continue; | |
2070 | } | |
2071 | if (c == 0x7E) { | |
2072 | return 0; | |
2073 | } else { | |
2074 | if (c == 0x55) { | |
2075 | goto read; | |
2076 | } else if (read_stop-- > 0) { | |
2077 | goto read; | |
2078 | } else { | |
5acc6e40 | 2079 | dev_err(&ftdi->udev->dev, "retry limit reached\n"); |
8dae693c JP |
2080 | continue; |
2081 | } | |
2082 | } | |
2083 | } else if (packet_bytes > 1) { | |
2084 | unsigned char s1 = ftdi->bulk_in_buffer[0]; | |
2085 | unsigned char s2 = ftdi->bulk_in_buffer[1]; | |
2086 | if (s1 == 0x31 && s2 == 0x00) { | |
2087 | if (read_stuck-- > 0) { | |
2088 | goto read; | |
2089 | } else | |
2090 | goto reset; | |
2091 | } else if (s1 == 0x31 && s2 == 0x60) { | |
2092 | if (read_stop-- > 0) { | |
2093 | goto read; | |
2094 | } else { | |
5acc6e40 | 2095 | dev_err(&ftdi->udev->dev, "retry limit reached\n"); |
8dae693c JP |
2096 | continue; |
2097 | } | |
2098 | } else { | |
2099 | if (read_stop-- > 0) { | |
2100 | goto read; | |
2101 | } else { | |
5acc6e40 | 2102 | dev_err(&ftdi->udev->dev, "retry limit reached\n"); |
8dae693c JP |
2103 | continue; |
2104 | } | |
2105 | } | |
2106 | } else if (packet_bytes > 0) { | |
2107 | if (read_stop-- > 0) { | |
2108 | goto read; | |
2109 | } else { | |
5acc6e40 | 2110 | dev_err(&ftdi->udev->dev, "retry limit reached\n"); |
8dae693c JP |
2111 | continue; |
2112 | } | |
2113 | } else if (retval == -ETIMEDOUT) { | |
2114 | if (retry_on_timeout-- > 0) { | |
2115 | goto read; | |
2116 | } else { | |
5acc6e40 | 2117 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); |
8dae693c JP |
2118 | continue; |
2119 | } | |
2120 | } else if (retval == 0) { | |
2121 | if (retry_on_empty-- > 0) { | |
2122 | goto read; | |
2123 | } else { | |
5acc6e40 | 2124 | dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); |
8dae693c JP |
2125 | continue; |
2126 | } | |
2127 | } else { | |
2128 | err_count += 1; | |
2129 | dev_err(&ftdi->udev->dev, "error = %d\n", | |
2130 | retval); | |
2131 | if (read_stop-- > 0) { | |
2132 | goto read; | |
2133 | } else { | |
5acc6e40 | 2134 | dev_err(&ftdi->udev->dev, "retry limit reached\n"); |
8dae693c JP |
2135 | continue; |
2136 | } | |
2137 | } | |
2138 | } | |
2139 | } | |
2140 | dev_err(&ftdi->udev->dev, "failed to synchronize\n"); | |
2141 | return -EFAULT; | |
a5c66e4b TO |
2142 | } |
2143 | ||
2144 | static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi) | |
2145 | { | |
8dae693c JP |
2146 | int retry_on_empty = 10; |
2147 | int retry_on_timeout = 5; | |
2148 | int retry_on_status = 50; | |
2149 | more:{ | |
2150 | int packet_bytes = 0; | |
2151 | int retval = usb_bulk_msg(ftdi->udev, | |
2152 | usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr), | |
2153 | ftdi->bulk_in_buffer, ftdi->bulk_in_size, | |
2154 | &packet_bytes, 1000); | |
2155 | if (packet_bytes > 2) { | |
2156 | char diag[30 *3 + 4]; | |
2157 | char *d = diag; | |
2158 | int m = (sizeof(diag) - 1) / 3; | |
2159 | char *b = ftdi->bulk_in_buffer; | |
2160 | int bytes_read = 0; | |
2161 | diag[0] = 0; | |
2162 | while (packet_bytes-- > 0) { | |
2163 | char c = *b++; | |
2164 | if (bytes_read < m) { | |
2165 | d += sprintf(d, " %02X", | |
2166 | 0x000000FF & c); | |
2167 | } else if (bytes_read > m) { | |
2168 | } else | |
2169 | d += sprintf(d, " .."); | |
2170 | bytes_read += 1; | |
2171 | continue; | |
2172 | } | |
2173 | goto more; | |
2174 | } else if (packet_bytes > 1) { | |
2175 | char s1 = ftdi->bulk_in_buffer[0]; | |
2176 | char s2 = ftdi->bulk_in_buffer[1]; | |
2177 | if (s1 == 0x31 && s2 == 0x60) { | |
2178 | return 0; | |
2179 | } else if (retry_on_status-- > 0) { | |
2180 | msleep(5); | |
2181 | goto more; | |
2182 | } else | |
2183 | return -EFAULT; | |
2184 | } else if (packet_bytes > 0) { | |
2185 | char b1 = ftdi->bulk_in_buffer[0]; | |
5acc6e40 | 2186 | dev_err(&ftdi->udev->dev, "only one byte flushed from FTDI = %02X\n", b1); |
8dae693c JP |
2187 | if (retry_on_status-- > 0) { |
2188 | msleep(5); | |
2189 | goto more; | |
2190 | } else { | |
5acc6e40 | 2191 | dev_err(&ftdi->udev->dev, "STATUS ERROR retry limit reached\n"); |
8dae693c JP |
2192 | return -EFAULT; |
2193 | } | |
2194 | } else if (retval == -ETIMEDOUT) { | |
2195 | if (retry_on_timeout-- > 0) { | |
2196 | goto more; | |
2197 | } else { | |
5acc6e40 | 2198 | dev_err(&ftdi->udev->dev, "TIMED OUT retry limit reached\n"); |
8dae693c JP |
2199 | return -ENOMEM; |
2200 | } | |
2201 | } else if (retval == 0) { | |
2202 | if (retry_on_empty-- > 0) { | |
2203 | goto more; | |
2204 | } else { | |
5acc6e40 | 2205 | dev_err(&ftdi->udev->dev, "empty packet retry limit reached\n"); |
8dae693c JP |
2206 | return -ENOMEM; |
2207 | } | |
2208 | } else { | |
2209 | dev_err(&ftdi->udev->dev, "error = %d\n", retval); | |
2210 | return -ENOMEM; | |
2211 | } | |
2212 | } | |
2213 | return -1; | |
a5c66e4b TO |
2214 | } |
2215 | ||
2216 | static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi) | |
2217 | { | |
8dae693c JP |
2218 | int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg); |
2219 | if (UxxxStatus) | |
2220 | return UxxxStatus; | |
2221 | if (ftdi->controlreg & 0x00400000) { | |
2222 | if (ftdi->card_ejected) { | |
2223 | } else { | |
2224 | ftdi->card_ejected = 1; | |
5acc6e40 JP |
2225 | dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = %08X\n", |
2226 | ftdi->controlreg); | |
8dae693c JP |
2227 | } |
2228 | return -ENODEV; | |
2229 | } else { | |
2230 | u8 fn = ftdi->function - 1; | |
2231 | int activePCIfn = fn << 8; | |
2232 | u32 pcidata; | |
2233 | u32 pciVID; | |
2234 | u32 pciPID; | |
2235 | int reg = 0; | |
2236 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2237 | &pcidata); | |
2238 | if (UxxxStatus) | |
2239 | return UxxxStatus; | |
2240 | pciVID = pcidata & 0xFFFF; | |
2241 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2242 | if (pciVID == ftdi->platform_data.vendor && pciPID == | |
2243 | ftdi->platform_data.device) { | |
2244 | return 0; | |
2245 | } else { | |
5acc6e40 | 2246 | dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X device=%04X pciPID=%04X\n", |
8dae693c JP |
2247 | ftdi->platform_data.vendor, pciVID, |
2248 | ftdi->platform_data.device, pciPID); | |
2249 | return -ENODEV; | |
2250 | } | |
2251 | } | |
a5c66e4b TO |
2252 | } |
2253 | ||
4b87361d TO |
2254 | |
2255 | #define ftdi_read_pcimem(ftdi, member, data) ftdi_elan_read_pcimem(ftdi, \ | |
8dae693c | 2256 | offsetof(struct ohci_regs, member), 0, data); |
4b87361d | 2257 | #define ftdi_write_pcimem(ftdi, member, data) ftdi_elan_write_pcimem(ftdi, \ |
8dae693c | 2258 | offsetof(struct ohci_regs, member), 0, data); |
47f8468e | 2259 | |
4b87361d | 2260 | #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR |
8dae693c JP |
2261 | #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \ |
2262 | OHCI_INTR_WDH) | |
4b87361d TO |
2263 | static int ftdi_elan_check_controller(struct usb_ftdi *ftdi, int quirk) |
2264 | { | |
8dae693c JP |
2265 | int devices = 0; |
2266 | int retval; | |
2267 | u32 hc_control; | |
2268 | int num_ports; | |
2269 | u32 control; | |
2270 | u32 rh_a = -1; | |
2271 | u32 status; | |
2272 | u32 fminterval; | |
2273 | u32 hc_fminterval; | |
2274 | u32 periodicstart; | |
2275 | u32 cmdstatus; | |
2276 | u32 roothub_a; | |
2277 | int mask = OHCI_INTR_INIT; | |
2278 | int sleep_time = 0; | |
2279 | int reset_timeout = 30; /* ... allow extra time */ | |
2280 | int temp; | |
2281 | retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE); | |
2282 | if (retval) | |
2283 | return retval; | |
2284 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2285 | if (retval) | |
2286 | return retval; | |
2287 | retval = ftdi_read_pcimem(ftdi, roothub.a, &rh_a); | |
2288 | if (retval) | |
2289 | return retval; | |
2290 | num_ports = rh_a & RH_A_NDP; | |
2291 | retval = ftdi_read_pcimem(ftdi, fminterval, &hc_fminterval); | |
2292 | if (retval) | |
2293 | return retval; | |
2294 | hc_fminterval &= 0x3fff; | |
2295 | if (hc_fminterval != FI) { | |
2296 | } | |
2297 | hc_fminterval |= FSMP(hc_fminterval) << 16; | |
2298 | retval = ftdi_read_pcimem(ftdi, control, &hc_control); | |
2299 | if (retval) | |
2300 | return retval; | |
2301 | switch (hc_control & OHCI_CTRL_HCFS) { | |
2302 | case OHCI_USB_OPER: | |
2303 | sleep_time = 0; | |
2304 | break; | |
2305 | case OHCI_USB_SUSPEND: | |
2306 | case OHCI_USB_RESUME: | |
2307 | hc_control &= OHCI_CTRL_RWC; | |
2308 | hc_control |= OHCI_USB_RESUME; | |
2309 | sleep_time = 10; | |
2310 | break; | |
2311 | default: | |
2312 | hc_control &= OHCI_CTRL_RWC; | |
2313 | hc_control |= OHCI_USB_RESET; | |
2314 | sleep_time = 50; | |
2315 | break; | |
2316 | } | |
2317 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2318 | if (retval) | |
2319 | return retval; | |
2320 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2321 | if (retval) | |
2322 | return retval; | |
2323 | msleep(sleep_time); | |
2324 | retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); | |
2325 | if (retval) | |
2326 | return retval; | |
2327 | if (!(roothub_a & RH_A_NPS)) { /* power down each port */ | |
2328 | for (temp = 0; temp < num_ports; temp++) { | |
2329 | retval = ftdi_write_pcimem(ftdi, | |
2330 | roothub.portstatus[temp], RH_PS_LSDA); | |
2331 | if (retval) | |
2332 | return retval; | |
2333 | } | |
2334 | } | |
2335 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2336 | if (retval) | |
2337 | return retval; | |
2338 | retry:retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); | |
2339 | if (retval) | |
2340 | return retval; | |
2341 | retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_HCR); | |
2342 | if (retval) | |
2343 | return retval; | |
2344 | extra:{ | |
2345 | retval = ftdi_read_pcimem(ftdi, cmdstatus, &status); | |
2346 | if (retval) | |
2347 | return retval; | |
2348 | if (0 != (status & OHCI_HCR)) { | |
2349 | if (--reset_timeout == 0) { | |
5acc6e40 | 2350 | dev_err(&ftdi->udev->dev, "USB HC reset timed out!\n"); |
8dae693c JP |
2351 | return -ENODEV; |
2352 | } else { | |
2353 | msleep(5); | |
2354 | goto extra; | |
2355 | } | |
2356 | } | |
2357 | } | |
2358 | if (quirk & OHCI_QUIRK_INITRESET) { | |
2359 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2360 | if (retval) | |
2361 | return retval; | |
2362 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2363 | if (retval) | |
2364 | return retval; | |
2365 | } | |
2366 | retval = ftdi_write_pcimem(ftdi, ed_controlhead, 0x00000000); | |
2367 | if (retval) | |
2368 | return retval; | |
2369 | retval = ftdi_write_pcimem(ftdi, ed_bulkhead, 0x11000000); | |
2370 | if (retval) | |
2371 | return retval; | |
2372 | retval = ftdi_write_pcimem(ftdi, hcca, 0x00000000); | |
2373 | if (retval) | |
2374 | return retval; | |
2375 | retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); | |
2376 | if (retval) | |
2377 | return retval; | |
2378 | retval = ftdi_write_pcimem(ftdi, fminterval, | |
2379 | ((fminterval & FIT) ^ FIT) | hc_fminterval); | |
2380 | if (retval) | |
2381 | return retval; | |
2382 | retval = ftdi_write_pcimem(ftdi, periodicstart, | |
2383 | ((9 *hc_fminterval) / 10) & 0x3fff); | |
2384 | if (retval) | |
2385 | return retval; | |
2386 | retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval); | |
2387 | if (retval) | |
2388 | return retval; | |
2389 | retval = ftdi_read_pcimem(ftdi, periodicstart, &periodicstart); | |
2390 | if (retval) | |
2391 | return retval; | |
2392 | if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) { | |
2393 | if (!(quirk & OHCI_QUIRK_INITRESET)) { | |
2394 | quirk |= OHCI_QUIRK_INITRESET; | |
2395 | goto retry; | |
2396 | } else | |
2397 | dev_err(&ftdi->udev->dev, "init err(%08x %04x)\n", | |
2398 | fminterval, periodicstart); | |
2399 | } /* start controller operations */ | |
2400 | hc_control &= OHCI_CTRL_RWC; | |
2401 | hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER; | |
2402 | retval = ftdi_write_pcimem(ftdi, control, hc_control); | |
2403 | if (retval) | |
2404 | return retval; | |
2405 | retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_BLF); | |
2406 | if (retval) | |
2407 | return retval; | |
2408 | retval = ftdi_read_pcimem(ftdi, cmdstatus, &cmdstatus); | |
2409 | if (retval) | |
2410 | return retval; | |
2411 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2412 | if (retval) | |
2413 | return retval; | |
2414 | retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_DRWE); | |
2415 | if (retval) | |
2416 | return retval; | |
2417 | retval = ftdi_write_pcimem(ftdi, intrstatus, mask); | |
2418 | if (retval) | |
2419 | return retval; | |
2420 | retval = ftdi_write_pcimem(ftdi, intrdisable, | |
2421 | OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO | | |
2422 | OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH | | |
2423 | OHCI_INTR_SO); | |
2424 | if (retval) | |
2425 | return retval; /* handle root hub init quirks ... */ | |
2426 | retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a); | |
2427 | if (retval) | |
2428 | return retval; | |
2429 | roothub_a &= ~(RH_A_PSM | RH_A_OCPM); | |
2430 | if (quirk & OHCI_QUIRK_SUPERIO) { | |
2431 | roothub_a |= RH_A_NOCP; | |
2432 | roothub_a &= ~(RH_A_POTPGT | RH_A_NPS); | |
2433 | retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); | |
2434 | if (retval) | |
2435 | return retval; | |
2436 | } else if ((quirk & OHCI_QUIRK_AMD756) || distrust_firmware) { | |
2437 | roothub_a |= RH_A_NPS; | |
2438 | retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a); | |
2439 | if (retval) | |
2440 | return retval; | |
2441 | } | |
2442 | retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_LPSC); | |
2443 | if (retval) | |
2444 | return retval; | |
2445 | retval = ftdi_write_pcimem(ftdi, roothub.b, | |
2446 | (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM); | |
2447 | if (retval) | |
2448 | return retval; | |
2449 | retval = ftdi_read_pcimem(ftdi, control, &control); | |
2450 | if (retval) | |
2451 | return retval; | |
2452 | mdelay((roothub_a >> 23) & 0x1fe); | |
2453 | for (temp = 0; temp < num_ports; temp++) { | |
2454 | u32 portstatus; | |
2455 | retval = ftdi_read_pcimem(ftdi, roothub.portstatus[temp], | |
2456 | &portstatus); | |
2457 | if (retval) | |
2458 | return retval; | |
2459 | if (1 & portstatus) | |
2460 | devices += 1; | |
2461 | } | |
2462 | return devices; | |
4b87361d TO |
2463 | } |
2464 | ||
2465 | static int ftdi_elan_setup_controller(struct usb_ftdi *ftdi, int fn) | |
a5c66e4b | 2466 | { |
8dae693c JP |
2467 | u32 latence_timer; |
2468 | int UxxxStatus; | |
2469 | u32 pcidata; | |
2470 | int reg = 0; | |
2471 | int activePCIfn = fn << 8; | |
2472 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); | |
2473 | if (UxxxStatus) | |
2474 | return UxxxStatus; | |
2475 | reg = 16; | |
2476 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2477 | 0xFFFFFFFF); | |
2478 | if (UxxxStatus) | |
2479 | return UxxxStatus; | |
2480 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2481 | &pcidata); | |
2482 | if (UxxxStatus) | |
2483 | return UxxxStatus; | |
2484 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2485 | 0xF0000000); | |
2486 | if (UxxxStatus) | |
2487 | return UxxxStatus; | |
2488 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2489 | &pcidata); | |
2490 | if (UxxxStatus) | |
2491 | return UxxxStatus; | |
2492 | reg = 12; | |
2493 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2494 | &latence_timer); | |
2495 | if (UxxxStatus) | |
2496 | return UxxxStatus; | |
2497 | latence_timer &= 0xFFFF00FF; | |
2498 | latence_timer |= 0x00001600; | |
2499 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2500 | latence_timer); | |
2501 | if (UxxxStatus) | |
2502 | return UxxxStatus; | |
2503 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2504 | &pcidata); | |
2505 | if (UxxxStatus) | |
2506 | return UxxxStatus; | |
2507 | reg = 4; | |
2508 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2509 | 0x06); | |
2510 | if (UxxxStatus) | |
2511 | return UxxxStatus; | |
2512 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2513 | &pcidata); | |
2514 | if (UxxxStatus) | |
2515 | return UxxxStatus; | |
2516 | for (reg = 0; reg <= 0x54; reg += 4) { | |
2517 | UxxxStatus = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata); | |
2518 | if (UxxxStatus) | |
2519 | return UxxxStatus; | |
2520 | } | |
2521 | return 0; | |
4b87361d TO |
2522 | } |
2523 | ||
2524 | static int ftdi_elan_close_controller(struct usb_ftdi *ftdi, int fn) | |
2525 | { | |
8dae693c JP |
2526 | u32 latence_timer; |
2527 | int UxxxStatus; | |
2528 | u32 pcidata; | |
2529 | int reg = 0; | |
2530 | int activePCIfn = fn << 8; | |
2531 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800); | |
2532 | if (UxxxStatus) | |
2533 | return UxxxStatus; | |
2534 | reg = 16; | |
2535 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2536 | 0xFFFFFFFF); | |
2537 | if (UxxxStatus) | |
2538 | return UxxxStatus; | |
2539 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2540 | &pcidata); | |
2541 | if (UxxxStatus) | |
2542 | return UxxxStatus; | |
2543 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0, | |
2544 | 0x00000000); | |
2545 | if (UxxxStatus) | |
2546 | return UxxxStatus; | |
2547 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2548 | &pcidata); | |
2549 | if (UxxxStatus) | |
2550 | return UxxxStatus; | |
2551 | reg = 12; | |
2552 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2553 | &latence_timer); | |
2554 | if (UxxxStatus) | |
2555 | return UxxxStatus; | |
2556 | latence_timer &= 0xFFFF00FF; | |
2557 | latence_timer |= 0x00001600; | |
2558 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2559 | latence_timer); | |
2560 | if (UxxxStatus) | |
2561 | return UxxxStatus; | |
2562 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2563 | &pcidata); | |
2564 | if (UxxxStatus) | |
2565 | return UxxxStatus; | |
2566 | reg = 4; | |
2567 | UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00, | |
2568 | 0x00); | |
2569 | if (UxxxStatus) | |
2570 | return UxxxStatus; | |
2571 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2572 | &pcidata); | |
2573 | if (UxxxStatus) | |
2574 | return UxxxStatus; | |
2575 | return 0; | |
a5c66e4b TO |
2576 | } |
2577 | ||
4b87361d TO |
2578 | static int ftdi_elan_found_controller(struct usb_ftdi *ftdi, int fn, int quirk) |
2579 | { | |
8dae693c JP |
2580 | int result; |
2581 | int UxxxStatus; | |
2582 | UxxxStatus = ftdi_elan_setup_controller(ftdi, fn); | |
2583 | if (UxxxStatus) | |
2584 | return UxxxStatus; | |
2585 | result = ftdi_elan_check_controller(ftdi, quirk); | |
2586 | UxxxStatus = ftdi_elan_close_controller(ftdi, fn); | |
2587 | if (UxxxStatus) | |
2588 | return UxxxStatus; | |
2589 | return result; | |
4b87361d TO |
2590 | } |
2591 | ||
2592 | static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi) | |
2593 | { | |
8dae693c JP |
2594 | u32 controlreg; |
2595 | u8 sensebits; | |
2596 | int UxxxStatus; | |
2597 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2598 | if (UxxxStatus) | |
2599 | return UxxxStatus; | |
2600 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L); | |
2601 | if (UxxxStatus) | |
2602 | return UxxxStatus; | |
2603 | msleep(750); | |
2604 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100); | |
2605 | if (UxxxStatus) | |
2606 | return UxxxStatus; | |
2607 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500); | |
2608 | if (UxxxStatus) | |
2609 | return UxxxStatus; | |
2610 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2611 | if (UxxxStatus) | |
2612 | return UxxxStatus; | |
2613 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000); | |
2614 | if (UxxxStatus) | |
2615 | return UxxxStatus; | |
2616 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000); | |
2617 | if (UxxxStatus) | |
2618 | return UxxxStatus; | |
2619 | msleep(250); | |
2620 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000); | |
2621 | if (UxxxStatus) | |
2622 | return UxxxStatus; | |
2623 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2624 | if (UxxxStatus) | |
2625 | return UxxxStatus; | |
2626 | UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800); | |
2627 | if (UxxxStatus) | |
2628 | return UxxxStatus; | |
2629 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2630 | if (UxxxStatus) | |
2631 | return UxxxStatus; | |
2632 | UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg); | |
2633 | if (UxxxStatus) | |
2634 | return UxxxStatus; | |
2635 | msleep(1000); | |
2636 | sensebits = (controlreg >> 16) & 0x000F; | |
2637 | if (0x0D == sensebits) | |
2638 | return 0; | |
2639 | else | |
4b87361d TO |
2640 | return - ENXIO; |
2641 | } | |
2642 | ||
a5c66e4b TO |
2643 | static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi) |
2644 | { | |
8dae693c JP |
2645 | int UxxxStatus; |
2646 | u32 pcidata; | |
2647 | int reg = 0; | |
2648 | u8 fn; | |
2649 | int activePCIfn = 0; | |
2650 | int max_devices = 0; | |
2651 | int controllers = 0; | |
2652 | int unrecognized = 0; | |
2653 | ftdi->function = 0; | |
2654 | for (fn = 0; (fn < 4); fn++) { | |
2655 | u32 pciVID = 0; | |
2656 | u32 pciPID = 0; | |
2657 | int devices = 0; | |
2658 | activePCIfn = fn << 8; | |
2659 | UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0, | |
2660 | &pcidata); | |
2661 | if (UxxxStatus) | |
2662 | return UxxxStatus; | |
2663 | pciVID = pcidata & 0xFFFF; | |
2664 | pciPID = (pcidata >> 16) & 0xFFFF; | |
2665 | if ((pciVID == PCI_VENDOR_ID_OPTI) && (pciPID == 0xc861)) { | |
2666 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2667 | controllers += 1; | |
2668 | } else if ((pciVID == PCI_VENDOR_ID_NEC) && (pciPID == 0x0035)) | |
2669 | { | |
2670 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2671 | controllers += 1; | |
2672 | } else if ((pciVID == PCI_VENDOR_ID_AL) && (pciPID == 0x5237)) { | |
2673 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2674 | controllers += 1; | |
2675 | } else if ((pciVID == PCI_VENDOR_ID_ATT) && (pciPID == 0x5802)) | |
2676 | { | |
2677 | devices = ftdi_elan_found_controller(ftdi, fn, 0); | |
2678 | controllers += 1; | |
2679 | } else if (pciVID == PCI_VENDOR_ID_AMD && pciPID == 0x740c) { | |
2680 | devices = ftdi_elan_found_controller(ftdi, fn, | |
2681 | OHCI_QUIRK_AMD756); | |
2682 | controllers += 1; | |
2683 | } else if (pciVID == PCI_VENDOR_ID_COMPAQ && pciPID == 0xa0f8) { | |
2684 | devices = ftdi_elan_found_controller(ftdi, fn, | |
2685 | OHCI_QUIRK_ZFMICRO); | |
2686 | controllers += 1; | |
2687 | } else if (0 == pcidata) { | |
2688 | } else | |
2689 | unrecognized += 1; | |
2690 | if (devices > max_devices) { | |
2691 | max_devices = devices; | |
2692 | ftdi->function = fn + 1; | |
2693 | ftdi->platform_data.vendor = pciVID; | |
2694 | ftdi->platform_data.device = pciPID; | |
2695 | } | |
2696 | } | |
2697 | if (ftdi->function > 0) { | |
2698 | UxxxStatus = ftdi_elan_setup_controller(ftdi, | |
2699 | ftdi->function - 1); | |
2700 | if (UxxxStatus) | |
2701 | return UxxxStatus; | |
2702 | return 0; | |
2703 | } else if (controllers > 0) { | |
2704 | return -ENXIO; | |
2705 | } else if (unrecognized > 0) { | |
2706 | return -ENXIO; | |
2707 | } else { | |
2708 | ftdi->enumerated = 0; | |
2709 | return -ENXIO; | |
2710 | } | |
a5c66e4b TO |
2711 | } |
2712 | ||
2713 | ||
2714 | /* | |
8dae693c JP |
2715 | * we use only the first bulk-in and bulk-out endpoints |
2716 | */ | |
a5c66e4b | 2717 | static int ftdi_elan_probe(struct usb_interface *interface, |
8dae693c | 2718 | const struct usb_device_id *id) |
a5c66e4b | 2719 | { |
8dae693c JP |
2720 | struct usb_host_interface *iface_desc; |
2721 | struct usb_endpoint_descriptor *endpoint; | |
2722 | size_t buffer_size; | |
2723 | int i; | |
2724 | int retval = -ENOMEM; | |
2725 | struct usb_ftdi *ftdi; | |
5280d608 MK |
2726 | |
2727 | ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL); | |
8355d39c | 2728 | if (!ftdi) |
8dae693c | 2729 | return -ENOMEM; |
8dae693c JP |
2730 | |
2731 | mutex_lock(&ftdi_module_lock); | |
2732 | list_add_tail(&ftdi->ftdi_list, &ftdi_static_list); | |
2733 | ftdi->sequence_num = ++ftdi_instances; | |
2734 | mutex_unlock(&ftdi_module_lock); | |
2735 | ftdi_elan_init_kref(ftdi); | |
5014b5e3 | 2736 | sema_init(&ftdi->sw_lock, 1); |
8dae693c JP |
2737 | ftdi->udev = usb_get_dev(interface_to_usbdev(interface)); |
2738 | ftdi->interface = interface; | |
2739 | mutex_init(&ftdi->u132_lock); | |
2740 | ftdi->expected = 4; | |
2741 | iface_desc = interface->cur_altsetting; | |
2742 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2743 | endpoint = &iface_desc->endpoint[i].desc; | |
2744 | if (!ftdi->bulk_in_endpointAddr && | |
2ae7745b | 2745 | usb_endpoint_is_bulk_in(endpoint)) { |
8dae693c JP |
2746 | buffer_size = usb_endpoint_maxp(endpoint); |
2747 | ftdi->bulk_in_size = buffer_size; | |
2748 | ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; | |
2749 | ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); | |
2750 | if (!ftdi->bulk_in_buffer) { | |
5acc6e40 | 2751 | dev_err(&ftdi->udev->dev, "Could not allocate bulk_in_buffer\n"); |
8dae693c JP |
2752 | retval = -ENOMEM; |
2753 | goto error; | |
2754 | } | |
2755 | } | |
2756 | if (!ftdi->bulk_out_endpointAddr && | |
2ae7745b | 2757 | usb_endpoint_is_bulk_out(endpoint)) { |
8dae693c JP |
2758 | ftdi->bulk_out_endpointAddr = |
2759 | endpoint->bEndpointAddress; | |
2760 | } | |
2761 | } | |
2762 | if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) { | |
5acc6e40 | 2763 | dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk-out endpoints\n"); |
8dae693c JP |
2764 | retval = -ENODEV; |
2765 | goto error; | |
2766 | } | |
2767 | dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", | |
2768 | iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, | |
2769 | ftdi->bulk_out_endpointAddr); | |
2770 | usb_set_intfdata(interface, ftdi); | |
2771 | if (iface_desc->desc.bInterfaceNumber == 0 && | |
2772 | ftdi->bulk_in_endpointAddr == 0x81 && | |
2773 | ftdi->bulk_out_endpointAddr == 0x02) { | |
2774 | retval = usb_register_dev(interface, &ftdi_elan_jtag_class); | |
2775 | if (retval) { | |
5acc6e40 | 2776 | dev_err(&ftdi->udev->dev, "Not able to get a minor for this device\n"); |
8dae693c JP |
2777 | usb_set_intfdata(interface, NULL); |
2778 | retval = -ENOMEM; | |
2779 | goto error; | |
2780 | } else { | |
2781 | ftdi->class = &ftdi_elan_jtag_class; | |
5acc6e40 JP |
2782 | dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface %d now attached to ftdi%d\n", |
2783 | ftdi, iface_desc->desc.bInterfaceNumber, | |
8dae693c JP |
2784 | interface->minor); |
2785 | return 0; | |
2786 | } | |
2787 | } else if (iface_desc->desc.bInterfaceNumber == 1 && | |
2788 | ftdi->bulk_in_endpointAddr == 0x83 && | |
2789 | ftdi->bulk_out_endpointAddr == 0x04) { | |
2790 | ftdi->class = NULL; | |
5acc6e40 JP |
2791 | dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now activated\n", |
2792 | ftdi, iface_desc->desc.bInterfaceNumber); | |
8dae693c JP |
2793 | INIT_DELAYED_WORK(&ftdi->status_work, ftdi_elan_status_work); |
2794 | INIT_DELAYED_WORK(&ftdi->command_work, ftdi_elan_command_work); | |
2795 | INIT_DELAYED_WORK(&ftdi->respond_work, ftdi_elan_respond_work); | |
2796 | ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000)); | |
2797 | return 0; | |
2798 | } else { | |
2799 | dev_err(&ftdi->udev->dev, | |
2800 | "Could not find ELAN's U132 device\n"); | |
2801 | retval = -ENODEV; | |
2802 | goto error; | |
2803 | } | |
2804 | error:if (ftdi) { | |
2805 | ftdi_elan_put_kref(ftdi); | |
2806 | } | |
2807 | return retval; | |
a5c66e4b TO |
2808 | } |
2809 | ||
2810 | static void ftdi_elan_disconnect(struct usb_interface *interface) | |
2811 | { | |
8dae693c JP |
2812 | struct usb_ftdi *ftdi = usb_get_intfdata(interface); |
2813 | ftdi->disconnected += 1; | |
2814 | if (ftdi->class) { | |
2815 | int minor = interface->minor; | |
2816 | struct usb_class_driver *class = ftdi->class; | |
2817 | usb_set_intfdata(interface, NULL); | |
2818 | usb_deregister_dev(interface, class); | |
5acc6e40 JP |
2819 | dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on minor %d now disconnected\n", |
2820 | minor); | |
8dae693c JP |
2821 | } else { |
2822 | ftdi_status_cancel_work(ftdi); | |
2823 | ftdi_command_cancel_work(ftdi); | |
2824 | ftdi_response_cancel_work(ftdi); | |
2825 | ftdi_elan_abandon_completions(ftdi); | |
2826 | ftdi_elan_abandon_targets(ftdi); | |
2827 | if (ftdi->registered) { | |
2828 | platform_device_unregister(&ftdi->platform_dev); | |
2829 | ftdi->synchronized = 0; | |
2830 | ftdi->enumerated = 0; | |
2831 | ftdi->initialized = 0; | |
2832 | ftdi->registered = 0; | |
2833 | } | |
2834 | flush_workqueue(status_queue); | |
2835 | flush_workqueue(command_queue); | |
2836 | flush_workqueue(respond_queue); | |
2837 | ftdi->disconnected += 1; | |
2838 | usb_set_intfdata(interface, NULL); | |
5acc6e40 | 2839 | dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller interface now disconnected\n"); |
8dae693c JP |
2840 | } |
2841 | ftdi_elan_put_kref(ftdi); | |
a5c66e4b TO |
2842 | } |
2843 | ||
2844 | static struct usb_driver ftdi_elan_driver = { | |
8dae693c JP |
2845 | .name = "ftdi-elan", |
2846 | .probe = ftdi_elan_probe, | |
2847 | .disconnect = ftdi_elan_disconnect, | |
2848 | .id_table = ftdi_elan_table, | |
a5c66e4b TO |
2849 | }; |
2850 | static int __init ftdi_elan_init(void) | |
2851 | { | |
8dae693c | 2852 | int result; |
8355d39c | 2853 | pr_info("driver %s\n", ftdi_elan_driver.name); |
8dae693c JP |
2854 | mutex_init(&ftdi_module_lock); |
2855 | INIT_LIST_HEAD(&ftdi_static_list); | |
2856 | status_queue = create_singlethread_workqueue("ftdi-status-control"); | |
ee17b289 | 2857 | if (!status_queue) |
893a342a | 2858 | goto err_status_queue; |
8dae693c | 2859 | command_queue = create_singlethread_workqueue("ftdi-command-engine"); |
ee17b289 | 2860 | if (!command_queue) |
893a342a | 2861 | goto err_command_queue; |
8dae693c | 2862 | respond_queue = create_singlethread_workqueue("ftdi-respond-engine"); |
ee17b289 | 2863 | if (!respond_queue) |
893a342a | 2864 | goto err_respond_queue; |
8dae693c JP |
2865 | result = usb_register(&ftdi_elan_driver); |
2866 | if (result) { | |
893a342a CG |
2867 | destroy_workqueue(status_queue); |
2868 | destroy_workqueue(command_queue); | |
2869 | destroy_workqueue(respond_queue); | |
8355d39c | 2870 | pr_err("usb_register failed. Error number %d\n", result); |
893a342a | 2871 | } |
8dae693c | 2872 | return result; |
ee17b289 | 2873 | |
8dae693c | 2874 | err_respond_queue: |
ee17b289 | 2875 | destroy_workqueue(command_queue); |
8dae693c | 2876 | err_command_queue: |
ee17b289 | 2877 | destroy_workqueue(status_queue); |
8dae693c | 2878 | err_status_queue: |
8355d39c | 2879 | pr_err("%s couldn't create workqueue\n", ftdi_elan_driver.name); |
ee17b289 | 2880 | return -ENOMEM; |
a5c66e4b TO |
2881 | } |
2882 | ||
2883 | static void __exit ftdi_elan_exit(void) | |
2884 | { | |
8dae693c JP |
2885 | struct usb_ftdi *ftdi; |
2886 | struct usb_ftdi *temp; | |
2887 | usb_deregister(&ftdi_elan_driver); | |
8355d39c | 2888 | pr_info("ftdi_u132 driver deregistered\n"); |
8dae693c JP |
2889 | list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) { |
2890 | ftdi_status_cancel_work(ftdi); | |
2891 | ftdi_command_cancel_work(ftdi); | |
2892 | ftdi_response_cancel_work(ftdi); | |
2893 | } flush_workqueue(status_queue); | |
2894 | destroy_workqueue(status_queue); | |
2895 | status_queue = NULL; | |
2896 | flush_workqueue(command_queue); | |
2897 | destroy_workqueue(command_queue); | |
2898 | command_queue = NULL; | |
2899 | flush_workqueue(respond_queue); | |
2900 | destroy_workqueue(respond_queue); | |
2901 | respond_queue = NULL; | |
a5c66e4b TO |
2902 | } |
2903 | ||
2904 | ||
2905 | module_init(ftdi_elan_init); | |
2906 | module_exit(ftdi_elan_exit); |