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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / usb / misc / ftdi-elan.c
blob148b7fe639b2166256230acd25b66ea37e24920d
1 /*
2 * USB FTDI client driver for Elan Digital Systems's Uxxx adapters
3 *
4 * Copyright(C) 2006 Elan Digital Systems Limited
5 * http://www.elandigitalsystems.com
6 *
7 * Author and Maintainer - Tony Olech - Elan Digital Systems
8 * tony.olech@elandigitalsystems.com
9 *
10 * This program is free software;you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License as
12 * published by the Free Software Foundation, version 2.
13 *
14 *
15 * This driver was written by Tony Olech(tony.olech@elandigitalsystems.com)
16 * based on various USB client drivers in the 2.6.15 linux kernel
17 * with constant reference to the 3rd Edition of Linux Device Drivers
18 * published by O'Reilly
19 *
20 * The U132 adapter is a USB to CardBus adapter specifically designed
21 * for PC cards that contain an OHCI host controller. Typical PC cards
22 * are the Orange Mobile 3G Option GlobeTrotter Fusion card.
23 *
24 * The U132 adapter will *NOT *work with PC cards that do not contain
25 * an OHCI controller. A simple way to test whether a PC card has an
26 * OHCI controller as an interface is to insert the PC card directly
27 * into a laptop(or desktop) with a CardBus slot and if "lspci" shows
28 * a new USB controller and "lsusb -v" shows a new OHCI Host Controller
29 * then there is a good chance that the U132 adapter will support the
30 * PC card.(you also need the specific client driver for the PC card)
31 *
32 * Please inform the Author and Maintainer about any PC cards that
33 * contain OHCI Host Controller and work when directly connected to
34 * an embedded CardBus slot but do not work when they are connected
35 * via an ELAN U132 adapter.
36 *
37 */
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/init.h>
41 #include <linux/list.h>
42 #include <linux/ioctl.h>
43 #include <linux/pci_ids.h>
44 #include <linux/slab.h>
45 #include <linux/module.h>
46 #include <linux/kref.h>
47 #include <linux/mutex.h>
48 #include <asm/uaccess.h>
49 #include <linux/usb.h>
50 #include <linux/workqueue.h>
51 #include <linux/platform_device.h>
52 MODULE_AUTHOR("Tony Olech");
53 MODULE_DESCRIPTION("FTDI ELAN driver");
54 MODULE_LICENSE("GPL");
55 #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
56 static int distrust_firmware = 1;
57 module_param(distrust_firmware, bool, 0);
58 MODULE_PARM_DESC(distrust_firmware, "true to distrust firmware power/overcurren"
59 "t setup");
60 extern struct platform_driver u132_platform_driver;
61 static struct workqueue_struct *status_queue;
62 static struct workqueue_struct *command_queue;
63 static struct workqueue_struct *respond_queue;
64 /*
65 * ftdi_module_lock exists to protect access to global variables
66 *
67 */
68 static struct mutex ftdi_module_lock;
69 static int ftdi_instances = 0;
70 static struct list_head ftdi_static_list;
71 /*
72 * end of the global variables protected by ftdi_module_lock
73 */
74 #include "usb_u132.h"
75 #include <asm/io.h>
76 #include "../core/hcd.h"
77
78 /* FIXME ohci.h is ONLY for internal use by the OHCI driver.
79 * If you're going to try stuff like this, you need to split
80 * out shareable stuff (register declarations?) into its own
81 * file, maybe name <linux/usb/ohci.h>
82 */
83
84 #include "../host/ohci.h"
85 /* Define these values to match your devices*/
86 #define USB_FTDI_ELAN_VENDOR_ID 0x0403
87 #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
88 /* table of devices that work with this driver*/
89 static struct usb_device_id ftdi_elan_table[] = {
90 {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID, USB_FTDI_ELAN_PRODUCT_ID)},
91 { /* Terminating entry */ }
92 };
93
94 MODULE_DEVICE_TABLE(usb, ftdi_elan_table);
95 /* only the jtag(firmware upgrade device) interface requires
96 * a device file and corresponding minor number, but the
97 * interface is created unconditionally - I suppose it could
98 * be configured or not according to a module parameter.
99 * But since we(now) require one interface per device,
100 * and since it unlikely that a normal installation would
101 * require more than a couple of elan-ftdi devices, 8 seems
102 * like a reasonable limit to have here, and if someone
103 * really requires more than 8 devices, then they can frig the
104 * code and recompile
105 */
106 #define USB_FTDI_ELAN_MINOR_BASE 192
107 #define COMMAND_BITS 5
108 #define COMMAND_SIZE (1<<COMMAND_BITS)
109 #define COMMAND_MASK (COMMAND_SIZE-1)
110 struct u132_command {
111 u8 header;
112 u16 length;
113 u8 address;
114 u8 width;
115 u32 value;
116 int follows;
117 void *buffer;
118 };
119 #define RESPOND_BITS 5
120 #define RESPOND_SIZE (1<<RESPOND_BITS)
121 #define RESPOND_MASK (RESPOND_SIZE-1)
122 struct u132_respond {
123 u8 header;
124 u8 address;
125 u32 *value;
126 int *result;
127 struct completion wait_completion;
128 };
129 struct u132_target {
130 void *endp;
131 struct urb *urb;
132 int toggle_bits;
133 int error_count;
134 int condition_code;
135 int repeat_number;
136 int halted;
137 int skipped;
138 int actual;
139 int non_null;
140 int active;
141 int abandoning;
142 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
143 int toggle_bits, int error_count, int condition_code,
144 int repeat_number, int halted, int skipped, int actual,
145 int non_null);
146 };
147 /* Structure to hold all of our device specific stuff*/
148 struct usb_ftdi {
149 struct list_head ftdi_list;
150 struct mutex u132_lock;
151 int command_next;
152 int command_head;
153 struct u132_command command[COMMAND_SIZE];
154 int respond_next;
155 int respond_head;
156 struct u132_respond respond[RESPOND_SIZE];
157 struct u132_target target[4];
158 char device_name[16];
159 unsigned synchronized:1;
160 unsigned enumerated:1;
161 unsigned registered:1;
162 unsigned initialized:1;
163 unsigned card_ejected:1;
164 int function;
165 int sequence_num;
166 int disconnected;
167 int gone_away;
168 int stuck_status;
169 int status_queue_delay;
170 struct semaphore sw_lock;
171 struct usb_device *udev;
172 struct usb_interface *interface;
173 struct usb_class_driver *class;
174 struct delayed_work status_work;
175 struct delayed_work command_work;
176 struct delayed_work respond_work;
177 struct u132_platform_data platform_data;
178 struct resource resources[0];
179 struct platform_device platform_dev;
180 unsigned char *bulk_in_buffer;
181 size_t bulk_in_size;
182 size_t bulk_in_last;
183 size_t bulk_in_left;
184 __u8 bulk_in_endpointAddr;
185 __u8 bulk_out_endpointAddr;
186 struct kref kref;
187 u32 controlreg;
188 u8 response[4 + 1024];
189 int expected;
190 int recieved;
191 int ed_found;
192 };
193 #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref)
194 #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \
195 platform_dev)
196 static struct usb_driver ftdi_elan_driver;
197 static void ftdi_elan_delete(struct kref *kref)
198 {
199 struct usb_ftdi *ftdi = kref_to_usb_ftdi(kref);
200 dev_warn(&ftdi->udev->dev, "FREEING ftdi=%p\n", ftdi);
201 usb_put_dev(ftdi->udev);
202 ftdi->disconnected += 1;
203 mutex_lock(&ftdi_module_lock);
204 list_del_init(&ftdi->ftdi_list);
205 ftdi_instances -= 1;
206 mutex_unlock(&ftdi_module_lock);
207 kfree(ftdi->bulk_in_buffer);
208 ftdi->bulk_in_buffer = NULL;
209 }
210
211 static void ftdi_elan_put_kref(struct usb_ftdi *ftdi)
212 {
213 kref_put(&ftdi->kref, ftdi_elan_delete);
214 }
215
216 static void ftdi_elan_get_kref(struct usb_ftdi *ftdi)
217 {
218 kref_get(&ftdi->kref);
219 }
220
221 static void ftdi_elan_init_kref(struct usb_ftdi *ftdi)
222 {
223 kref_init(&ftdi->kref);
224 }
225
226 static void ftdi_status_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
227 {
228 if (!queue_delayed_work(status_queue, &ftdi->status_work, delta))
229 kref_put(&ftdi->kref, ftdi_elan_delete);
230 }
231
232 static void ftdi_status_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
233 {
234 if (queue_delayed_work(status_queue, &ftdi->status_work, delta))
235 kref_get(&ftdi->kref);
236 }
237
238 static void ftdi_status_cancel_work(struct usb_ftdi *ftdi)
239 {
240 if (cancel_delayed_work(&ftdi->status_work))
241 kref_put(&ftdi->kref, ftdi_elan_delete);
242 }
243
244 static void ftdi_command_requeue_work(struct usb_ftdi *ftdi, unsigned int delta)
245 {
246 if (!queue_delayed_work(command_queue, &ftdi->command_work, delta))
247 kref_put(&ftdi->kref, ftdi_elan_delete);
248 }
249
250 static void ftdi_command_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
251 {
252 if (queue_delayed_work(command_queue, &ftdi->command_work, delta))
253 kref_get(&ftdi->kref);
254 }
255
256 static void ftdi_command_cancel_work(struct usb_ftdi *ftdi)
257 {
258 if (cancel_delayed_work(&ftdi->command_work))
259 kref_put(&ftdi->kref, ftdi_elan_delete);
260 }
261
262 static void ftdi_response_requeue_work(struct usb_ftdi *ftdi,
263 unsigned int delta)
264 {
265 if (!queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
266 kref_put(&ftdi->kref, ftdi_elan_delete);
267 }
268
269 static void ftdi_respond_queue_work(struct usb_ftdi *ftdi, unsigned int delta)
270 {
271 if (queue_delayed_work(respond_queue, &ftdi->respond_work, delta))
272 kref_get(&ftdi->kref);
273 }
274
275 static void ftdi_response_cancel_work(struct usb_ftdi *ftdi)
276 {
277 if (cancel_delayed_work(&ftdi->respond_work))
278 kref_put(&ftdi->kref, ftdi_elan_delete);
279 }
280
281 void ftdi_elan_gone_away(struct platform_device *pdev)
282 {
283 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
284 ftdi->gone_away += 1;
285 ftdi_elan_put_kref(ftdi);
286 }
287
288
289 EXPORT_SYMBOL_GPL(ftdi_elan_gone_away);
290 static void ftdi_release_platform_dev(struct device *dev)
291 {
292 dev->parent = NULL;
293 }
294
295 static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
296 struct u132_target *target, u8 *buffer, int length);
297 static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi);
298 static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi);
299 static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi);
300 static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi);
301 static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi);
302 static int ftdi_elan_synchronize(struct usb_ftdi *ftdi);
303 static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi);
304 static int ftdi_elan_command_engine(struct usb_ftdi *ftdi);
305 static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi);
306 static int ftdi_elan_hcd_init(struct usb_ftdi *ftdi)
307 {
308 int result;
309 if (ftdi->platform_dev.dev.parent)
310 return -EBUSY;
311 ftdi_elan_get_kref(ftdi);
312 ftdi->platform_data.potpg = 100;
313 ftdi->platform_data.reset = NULL;
314 ftdi->platform_dev.id = ftdi->sequence_num;
315 ftdi->platform_dev.resource = ftdi->resources;
316 ftdi->platform_dev.num_resources = ARRAY_SIZE(ftdi->resources);
317 ftdi->platform_dev.dev.platform_data = &ftdi->platform_data;
318 ftdi->platform_dev.dev.parent = NULL;
319 ftdi->platform_dev.dev.release = ftdi_release_platform_dev;
320 ftdi->platform_dev.dev.dma_mask = NULL;
321 snprintf(ftdi->device_name, sizeof(ftdi->device_name), "u132_hcd");
322 ftdi->platform_dev.name = ftdi->device_name;
323 dev_info(&ftdi->udev->dev, "requesting module '%s'\n", "u132_hcd");
324 request_module("u132_hcd");
325 dev_info(&ftdi->udev->dev, "registering '%s'\n",
326 ftdi->platform_dev.name);
327 result = platform_device_register(&ftdi->platform_dev);
328 return result;
329 }
330
331 static void ftdi_elan_abandon_completions(struct usb_ftdi *ftdi)
332 {
333 mutex_lock(&ftdi->u132_lock);
334 while (ftdi->respond_next > ftdi->respond_head) {
335 struct u132_respond *respond = &ftdi->respond[RESPOND_MASK &
336 ftdi->respond_head++];
337 *respond->result = -ESHUTDOWN;
338 *respond->value = 0;
339 complete(&respond->wait_completion);
340 } mutex_unlock(&ftdi->u132_lock);
341 }
342
343 static void ftdi_elan_abandon_targets(struct usb_ftdi *ftdi)
344 {
345 int ed_number = 4;
346 mutex_lock(&ftdi->u132_lock);
347 while (ed_number-- > 0) {
348 struct u132_target *target = &ftdi->target[ed_number];
349 if (target->active == 1) {
350 target->condition_code = TD_DEVNOTRESP;
351 mutex_unlock(&ftdi->u132_lock);
352 ftdi_elan_do_callback(ftdi, target, NULL, 0);
353 mutex_lock(&ftdi->u132_lock);
354 }
355 }
356 ftdi->recieved = 0;
357 ftdi->expected = 4;
358 ftdi->ed_found = 0;
359 mutex_unlock(&ftdi->u132_lock);
360 }
361
362 static void ftdi_elan_flush_targets(struct usb_ftdi *ftdi)
363 {
364 int ed_number = 4;
365 mutex_lock(&ftdi->u132_lock);
366 while (ed_number-- > 0) {
367 struct u132_target *target = &ftdi->target[ed_number];
368 target->abandoning = 1;
369 wait_1:if (target->active == 1) {
370 int command_size = ftdi->command_next -
371 ftdi->command_head;
372 if (command_size < COMMAND_SIZE) {
373 struct u132_command *command = &ftdi->command[
374 COMMAND_MASK & ftdi->command_next];
375 command->header = 0x80 | (ed_number << 5) | 0x4;
376 command->length = 0x00;
377 command->address = 0x00;
378 command->width = 0x00;
379 command->follows = 0;
380 command->value = 0;
381 command->buffer = &command->value;
382 ftdi->command_next += 1;
383 ftdi_elan_kick_command_queue(ftdi);
384 } else {
385 mutex_unlock(&ftdi->u132_lock);
386 msleep(100);
387 mutex_lock(&ftdi->u132_lock);
388 goto wait_1;
389 }
390 }
391 wait_2:if (target->active == 1) {
392 int command_size = ftdi->command_next -
393 ftdi->command_head;
394 if (command_size < COMMAND_SIZE) {
395 struct u132_command *command = &ftdi->command[
396 COMMAND_MASK & ftdi->command_next];
397 command->header = 0x90 | (ed_number << 5);
398 command->length = 0x00;
399 command->address = 0x00;
400 command->width = 0x00;
401 command->follows = 0;
402 command->value = 0;
403 command->buffer = &command->value;
404 ftdi->command_next += 1;
405 ftdi_elan_kick_command_queue(ftdi);
406 } else {
407 mutex_unlock(&ftdi->u132_lock);
408 msleep(100);
409 mutex_lock(&ftdi->u132_lock);
410 goto wait_2;
411 }
412 }
413 }
414 ftdi->recieved = 0;
415 ftdi->expected = 4;
416 ftdi->ed_found = 0;
417 mutex_unlock(&ftdi->u132_lock);
418 }
419
420 static void ftdi_elan_cancel_targets(struct usb_ftdi *ftdi)
421 {
422 int ed_number = 4;
423 mutex_lock(&ftdi->u132_lock);
424 while (ed_number-- > 0) {
425 struct u132_target *target = &ftdi->target[ed_number];
426 target->abandoning = 1;
427 wait:if (target->active == 1) {
428 int command_size = ftdi->command_next -
429 ftdi->command_head;
430 if (command_size < COMMAND_SIZE) {
431 struct u132_command *command = &ftdi->command[
432 COMMAND_MASK & ftdi->command_next];
433 command->header = 0x80 | (ed_number << 5) | 0x4;
434 command->length = 0x00;
435 command->address = 0x00;
436 command->width = 0x00;
437 command->follows = 0;
438 command->value = 0;
439 command->buffer = &command->value;
440 ftdi->command_next += 1;
441 ftdi_elan_kick_command_queue(ftdi);
442 } else {
443 mutex_unlock(&ftdi->u132_lock);
444 msleep(100);
445 mutex_lock(&ftdi->u132_lock);
446 goto wait;
447 }
448 }
449 }
450 ftdi->recieved = 0;
451 ftdi->expected = 4;
452 ftdi->ed_found = 0;
453 mutex_unlock(&ftdi->u132_lock);
454 }
455
456 static void ftdi_elan_kick_command_queue(struct usb_ftdi *ftdi)
457 {
458 ftdi_command_queue_work(ftdi, 0);
459 return;
460 }
461
462 static void ftdi_elan_command_work(struct work_struct *work)
463 {
464 struct usb_ftdi *ftdi =
465 container_of(work, struct usb_ftdi, command_work.work);
466
467 if (ftdi->disconnected > 0) {
468 ftdi_elan_put_kref(ftdi);
469 return;
470 } else {
471 int retval = ftdi_elan_command_engine(ftdi);
472 if (retval == -ESHUTDOWN) {
473 ftdi->disconnected += 1;
474 } else if (retval == -ENODEV) {
475 ftdi->disconnected += 1;
476 } else if (retval)
477 dev_err(&ftdi->udev->dev, "command error %d\n", retval);
478 ftdi_command_requeue_work(ftdi, msecs_to_jiffies(10));
479 return;
480 }
481 }
482
483 static void ftdi_elan_kick_respond_queue(struct usb_ftdi *ftdi)
484 {
485 ftdi_respond_queue_work(ftdi, 0);
486 return;
487 }
488
489 static void ftdi_elan_respond_work(struct work_struct *work)
490 {
491 struct usb_ftdi *ftdi =
492 container_of(work, struct usb_ftdi, respond_work.work);
493 if (ftdi->disconnected > 0) {
494 ftdi_elan_put_kref(ftdi);
495 return;
496 } else {
497 int retval = ftdi_elan_respond_engine(ftdi);
498 if (retval == 0) {
499 } else if (retval == -ESHUTDOWN) {
500 ftdi->disconnected += 1;
501 } else if (retval == -ENODEV) {
502 ftdi->disconnected += 1;
503 } else if (retval == -EILSEQ) {
504 ftdi->disconnected += 1;
505 } else {
506 ftdi->disconnected += 1;
507 dev_err(&ftdi->udev->dev, "respond error %d\n", retval);
508 }
509 if (ftdi->disconnected > 0) {
510 ftdi_elan_abandon_completions(ftdi);
511 ftdi_elan_abandon_targets(ftdi);
512 }
513 ftdi_response_requeue_work(ftdi, msecs_to_jiffies(10));
514 return;
515 }
516 }
517
518
519 /*
520 * the sw_lock is initially held and will be freed
521 * after the FTDI has been synchronized
522 *
523 */
524 static void ftdi_elan_status_work(struct work_struct *work)
525 {
526 struct usb_ftdi *ftdi =
527 container_of(work, struct usb_ftdi, status_work.work);
528 int work_delay_in_msec = 0;
529 if (ftdi->disconnected > 0) {
530 ftdi_elan_put_kref(ftdi);
531 return;
532 } else if (ftdi->synchronized == 0) {
533 down(&ftdi->sw_lock);
534 if (ftdi_elan_synchronize(ftdi) == 0) {
535 ftdi->synchronized = 1;
536 ftdi_command_queue_work(ftdi, 1);
537 ftdi_respond_queue_work(ftdi, 1);
538 up(&ftdi->sw_lock);
539 work_delay_in_msec = 100;
540 } else {
541 dev_err(&ftdi->udev->dev, "synchronize failed\n");
542 up(&ftdi->sw_lock);
543 work_delay_in_msec = 10 *1000;
544 }
545 } else if (ftdi->stuck_status > 0) {
546 if (ftdi_elan_stuck_waiting(ftdi) == 0) {
547 ftdi->stuck_status = 0;
548 ftdi->synchronized = 0;
549 } else if ((ftdi->stuck_status++ % 60) == 1) {
550 dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
551 "- please remove\n");
552 } else
553 dev_err(&ftdi->udev->dev, "WRONG type of card inserted "
554 "- checked %d times\n", ftdi->stuck_status);
555 work_delay_in_msec = 100;
556 } else if (ftdi->enumerated == 0) {
557 if (ftdi_elan_enumeratePCI(ftdi) == 0) {
558 ftdi->enumerated = 1;
559 work_delay_in_msec = 250;
560 } else
561 work_delay_in_msec = 1000;
562 } else if (ftdi->initialized == 0) {
563 if (ftdi_elan_setupOHCI(ftdi) == 0) {
564 ftdi->initialized = 1;
565 work_delay_in_msec = 500;
566 } else {
567 dev_err(&ftdi->udev->dev, "initialized failed - trying "
568 "again in 10 seconds\n");
569 work_delay_in_msec = 1 *1000;
570 }
571 } else if (ftdi->registered == 0) {
572 work_delay_in_msec = 10;
573 if (ftdi_elan_hcd_init(ftdi) == 0) {
574 ftdi->registered = 1;
575 } else
576 dev_err(&ftdi->udev->dev, "register failed\n");
577 work_delay_in_msec = 250;
578 } else {
579 if (ftdi_elan_checkingPCI(ftdi) == 0) {
580 work_delay_in_msec = 250;
581 } else if (ftdi->controlreg & 0x00400000) {
582 if (ftdi->gone_away > 0) {
583 dev_err(&ftdi->udev->dev, "PCI device eject con"
584 "firmed platform_dev.dev.parent=%p plat"
585 "form_dev.dev=%p\n",
586 ftdi->platform_dev.dev.parent,
587 &ftdi->platform_dev.dev);
588 platform_device_unregister(&ftdi->platform_dev);
589 ftdi->platform_dev.dev.parent = NULL;
590 ftdi->registered = 0;
591 ftdi->enumerated = 0;
592 ftdi->card_ejected = 0;
593 ftdi->initialized = 0;
594 ftdi->gone_away = 0;
595 } else
596 ftdi_elan_flush_targets(ftdi);
597 work_delay_in_msec = 250;
598 } else {
599 dev_err(&ftdi->udev->dev, "PCI device has disappeared\n"
600 );
601 ftdi_elan_cancel_targets(ftdi);
602 work_delay_in_msec = 500;
603 ftdi->enumerated = 0;
604 ftdi->initialized = 0;
605 }
606 }
607 if (ftdi->disconnected > 0) {
608 ftdi_elan_put_kref(ftdi);
609 return;
610 } else {
611 ftdi_status_requeue_work(ftdi,
612 msecs_to_jiffies(work_delay_in_msec));
613 return;
614 }
615 }
616
617
618 /*
619 * file_operations for the jtag interface
620 *
621 * the usage count for the device is incremented on open()
622 * and decremented on release()
623 */
624 static int ftdi_elan_open(struct inode *inode, struct file *file)
625 {
626 int subminor = iminor(inode);
627 struct usb_interface *interface = usb_find_interface(&ftdi_elan_driver,
628 subminor);
629 if (!interface) {
630 printk(KERN_ERR "can't find device for minor %d\n", subminor);
631 return -ENODEV;
632 } else {
633 struct usb_ftdi *ftdi = usb_get_intfdata(interface);
634 if (!ftdi) {
635 return -ENODEV;
636 } else {
637 if (down_interruptible(&ftdi->sw_lock)) {
638 return -EINTR;
639 } else {
640 ftdi_elan_get_kref(ftdi);
641 file->private_data = ftdi;
642 return 0;
643 }
644 }
645 }
646 }
647
648 static int ftdi_elan_release(struct inode *inode, struct file *file)
649 {
650 struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
651 if (ftdi == NULL)
652 return -ENODEV;
653 up(&ftdi->sw_lock); /* decrement the count on our device */
654 ftdi_elan_put_kref(ftdi);
655 return 0;
656 }
657
658
659 #define FTDI_ELAN_IOC_MAGIC 0xA1
660 #define FTDI_ELAN_IOCDEBUG _IOC(_IOC_WRITE, FTDI_ELAN_IOC_MAGIC, 1, 132)
661 static int ftdi_elan_ioctl(struct inode *inode, struct file *file,
662 unsigned int cmd, unsigned long arg)
663 {
664 switch (cmd) {
665 case FTDI_ELAN_IOCDEBUG:{
666 char line[132];
667 int size = strncpy_from_user(line,
668 (const char __user *)arg, sizeof(line));
669 if (size < 0) {
670 return -EINVAL;
671 } else {
672 printk(KERN_ERR "TODO: ioctl %s\n", line);
673 return 0;
674 }
675 }
676 default:
677 return -EFAULT;
678 }
679 }
680
681
682 /*
683 *
684 * blocking bulk reads are used to get data from the device
685 *
686 */
687 static ssize_t ftdi_elan_read(struct file *file, char __user *buffer,
688 size_t count, loff_t *ppos)
689 {
690 char data[30 *3 + 4];
691 char *d = data;
692 int m = (sizeof(data) - 1) / 3;
693 int bytes_read = 0;
694 int retry_on_empty = 10;
695 int retry_on_timeout = 5;
696 struct usb_ftdi *ftdi = (struct usb_ftdi *)file->private_data;
697 if (ftdi->disconnected > 0) {
698 return -ENODEV;
699 }
700 data[0] = 0;
701 have:if (ftdi->bulk_in_left > 0) {
702 if (count-- > 0) {
703 char *p = ++ftdi->bulk_in_last + ftdi->bulk_in_buffer;
704 ftdi->bulk_in_left -= 1;
705 if (bytes_read < m) {
706 d += sprintf(d, " %02X", 0x000000FF & *p);
707 } else if (bytes_read > m) {
708 } else
709 d += sprintf(d, " ..");
710 if (copy_to_user(buffer++, p, 1)) {
711 return -EFAULT;
712 } else {
713 bytes_read += 1;
714 goto have;
715 }
716 } else
717 return bytes_read;
718 }
719 more:if (count > 0) {
720 int packet_bytes = 0;
721 int retval = usb_bulk_msg(ftdi->udev,
722 usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
723 ftdi->bulk_in_buffer, ftdi->bulk_in_size,
724 &packet_bytes, msecs_to_jiffies(50));
725 if (packet_bytes > 2) {
726 ftdi->bulk_in_left = packet_bytes - 2;
727 ftdi->bulk_in_last = 1;
728 goto have;
729 } else if (retval == -ETIMEDOUT) {
730 if (retry_on_timeout-- > 0) {
731 goto more;
732 } else if (bytes_read > 0) {
733 return bytes_read;
734 } else
735 return retval;
736 } else if (retval == 0) {
737 if (retry_on_empty-- > 0) {
738 goto more;
739 } else
740 return bytes_read;
741 } else
742 return retval;
743 } else
744 return bytes_read;
745 }
746
747 static void ftdi_elan_write_bulk_callback(struct urb *urb)
748 {
749 struct usb_ftdi *ftdi = (struct usb_ftdi *)urb->context;
750 int status = urb->status;
751
752 if (status && !(status == -ENOENT || status == -ECONNRESET ||
753 status == -ESHUTDOWN)) {
754 dev_err(&ftdi->udev->dev, "urb=%p write bulk status received: %"
755 "d\n", urb, status);
756 }
757 usb_buffer_free(urb->dev, urb->transfer_buffer_length,
758 urb->transfer_buffer, urb->transfer_dma);
759 }
760
761 static int fill_buffer_with_all_queued_commands(struct usb_ftdi *ftdi,
762 char *buf, int command_size, int total_size)
763 {
764 int ed_commands = 0;
765 int b = 0;
766 int I = command_size;
767 int i = ftdi->command_head;
768 while (I-- > 0) {
769 struct u132_command *command = &ftdi->command[COMMAND_MASK &
770 i++];
771 int F = command->follows;
772 u8 *f = command->buffer;
773 if (command->header & 0x80) {
774 ed_commands |= 1 << (0x3 & (command->header >> 5));
775 }
776 buf[b++] = command->header;
777 buf[b++] = (command->length >> 0) & 0x00FF;
778 buf[b++] = (command->length >> 8) & 0x00FF;
779 buf[b++] = command->address;
780 buf[b++] = command->width;
781 while (F-- > 0) {
782 buf[b++] = *f++;
783 }
784 }
785 return ed_commands;
786 }
787
788 static int ftdi_elan_total_command_size(struct usb_ftdi *ftdi, int command_size)
789 {
790 int total_size = 0;
791 int I = command_size;
792 int i = ftdi->command_head;
793 while (I-- > 0) {
794 struct u132_command *command = &ftdi->command[COMMAND_MASK &
795 i++];
796 total_size += 5 + command->follows;
797 } return total_size;
798 }
799
800 static int ftdi_elan_command_engine(struct usb_ftdi *ftdi)
801 {
802 int retval;
803 char *buf;
804 int ed_commands;
805 int total_size;
806 struct urb *urb;
807 int command_size = ftdi->command_next - ftdi->command_head;
808 if (command_size == 0)
809 return 0;
810 total_size = ftdi_elan_total_command_size(ftdi, command_size);
811 urb = usb_alloc_urb(0, GFP_KERNEL);
812 if (!urb) {
813 dev_err(&ftdi->udev->dev, "could not get a urb to write %d comm"
814 "ands totaling %d bytes to the Uxxx\n", command_size,
815 total_size);
816 return -ENOMEM;
817 }
818 buf = usb_buffer_alloc(ftdi->udev, total_size, GFP_KERNEL,
819 &urb->transfer_dma);
820 if (!buf) {
821 dev_err(&ftdi->udev->dev, "could not get a buffer to write %d c"
822 "ommands totaling %d bytes to the Uxxx\n", command_size,
823 total_size);
824 usb_free_urb(urb);
825 return -ENOMEM;
826 }
827 ed_commands = fill_buffer_with_all_queued_commands(ftdi, buf,
828 command_size, total_size);
829 usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
830 ftdi->bulk_out_endpointAddr), buf, total_size,
831 ftdi_elan_write_bulk_callback, ftdi);
832 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
833 if (ed_commands) {
834 char diag[40 *3 + 4];
835 char *d = diag;
836 int m = total_size;
837 u8 *c = buf;
838 int s = (sizeof(diag) - 1) / 3;
839 diag[0] = 0;
840 while (s-- > 0 && m-- > 0) {
841 if (s > 0 || m == 0) {
842 d += sprintf(d, " %02X", *c++);
843 } else
844 d += sprintf(d, " ..");
845 }
846 }
847 retval = usb_submit_urb(urb, GFP_KERNEL);
848 if (retval) {
849 dev_err(&ftdi->udev->dev, "failed %d to submit urb %p to write "
850 "%d commands totaling %d bytes to the Uxxx\n", retval,
851 urb, command_size, total_size);
852 usb_buffer_free(ftdi->udev, total_size, buf, urb->transfer_dma);
853 usb_free_urb(urb);
854 return retval;
855 }
856 usb_free_urb(urb); /* release our reference to this urb,
857 the USB core will eventually free it entirely */
858 ftdi->command_head += command_size;
859 ftdi_elan_kick_respond_queue(ftdi);
860 return 0;
861 }
862
863 static void ftdi_elan_do_callback(struct usb_ftdi *ftdi,
864 struct u132_target *target, u8 *buffer, int length)
865 {
866 struct urb *urb = target->urb;
867 int halted = target->halted;
868 int skipped = target->skipped;
869 int actual = target->actual;
870 int non_null = target->non_null;
871 int toggle_bits = target->toggle_bits;
872 int error_count = target->error_count;
873 int condition_code = target->condition_code;
874 int repeat_number = target->repeat_number;
875 void (*callback) (void *, struct urb *, u8 *, int, int, int, int, int,
876 int, int, int, int) = target->callback;
877 target->active -= 1;
878 target->callback = NULL;
879 (*callback) (target->endp, urb, buffer, length, toggle_bits,
880 error_count, condition_code, repeat_number, halted, skipped,
881 actual, non_null);
882 }
883
884 static char *have_ed_set_response(struct usb_ftdi *ftdi,
885 struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
886 char *b)
887 {
888 int payload = (ed_length >> 0) & 0x07FF;
889 mutex_lock(&ftdi->u132_lock);
890 target->actual = 0;
891 target->non_null = (ed_length >> 15) & 0x0001;
892 target->repeat_number = (ed_length >> 11) & 0x000F;
893 if (ed_type == 0x02) {
894 if (payload == 0 || target->abandoning > 0) {
895 target->abandoning = 0;
896 mutex_unlock(&ftdi->u132_lock);
897 ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
898 payload);
899 ftdi->recieved = 0;
900 ftdi->expected = 4;
901 ftdi->ed_found = 0;
902 return ftdi->response;
903 } else {
904 ftdi->expected = 4 + payload;
905 ftdi->ed_found = 1;
906 mutex_unlock(&ftdi->u132_lock);
907 return b;
908 }
909 } else if (ed_type == 0x03) {
910 if (payload == 0 || target->abandoning > 0) {
911 target->abandoning = 0;
912 mutex_unlock(&ftdi->u132_lock);
913 ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
914 payload);
915 ftdi->recieved = 0;
916 ftdi->expected = 4;
917 ftdi->ed_found = 0;
918 return ftdi->response;
919 } else {
920 ftdi->expected = 4 + payload;
921 ftdi->ed_found = 1;
922 mutex_unlock(&ftdi->u132_lock);
923 return b;
924 }
925 } else if (ed_type == 0x01) {
926 target->abandoning = 0;
927 mutex_unlock(&ftdi->u132_lock);
928 ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
929 payload);
930 ftdi->recieved = 0;
931 ftdi->expected = 4;
932 ftdi->ed_found = 0;
933 return ftdi->response;
934 } else {
935 target->abandoning = 0;
936 mutex_unlock(&ftdi->u132_lock);
937 ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
938 payload);
939 ftdi->recieved = 0;
940 ftdi->expected = 4;
941 ftdi->ed_found = 0;
942 return ftdi->response;
943 }
944 }
945
946 static char *have_ed_get_response(struct usb_ftdi *ftdi,
947 struct u132_target *target, u16 ed_length, int ed_number, int ed_type,
948 char *b)
949 {
950 mutex_lock(&ftdi->u132_lock);
951 target->condition_code = TD_DEVNOTRESP;
952 target->actual = (ed_length >> 0) & 0x01FF;
953 target->non_null = (ed_length >> 15) & 0x0001;
954 target->repeat_number = (ed_length >> 11) & 0x000F;
955 mutex_unlock(&ftdi->u132_lock);
956 if (target->active)
957 ftdi_elan_do_callback(ftdi, target, NULL, 0);
958 target->abandoning = 0;
959 ftdi->recieved = 0;
960 ftdi->expected = 4;
961 ftdi->ed_found = 0;
962 return ftdi->response;
963 }
964
965
966 /*
967 * The engine tries to empty the FTDI fifo
968 *
969 * all responses found in the fifo data are dispatched thus
970 * the response buffer can only ever hold a maximum sized
971 * response from the Uxxx.
972 *
973 */
974 static int ftdi_elan_respond_engine(struct usb_ftdi *ftdi)
975 {
976 u8 *b = ftdi->response + ftdi->recieved;
977 int bytes_read = 0;
978 int retry_on_empty = 1;
979 int retry_on_timeout = 3;
980 int empty_packets = 0;
981 read:{
982 int packet_bytes = 0;
983 int retval = usb_bulk_msg(ftdi->udev,
984 usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
985 ftdi->bulk_in_buffer, ftdi->bulk_in_size,
986 &packet_bytes, msecs_to_jiffies(500));
987 char diag[30 *3 + 4];
988 char *d = diag;
989 int m = packet_bytes;
990 u8 *c = ftdi->bulk_in_buffer;
991 int s = (sizeof(diag) - 1) / 3;
992 diag[0] = 0;
993 while (s-- > 0 && m-- > 0) {
994 if (s > 0 || m == 0) {
995 d += sprintf(d, " %02X", *c++);
996 } else
997 d += sprintf(d, " ..");
998 }
999 if (packet_bytes > 2) {
1000 ftdi->bulk_in_left = packet_bytes - 2;
1001 ftdi->bulk_in_last = 1;
1002 goto have;
1003 } else if (retval == -ETIMEDOUT) {
1004 if (retry_on_timeout-- > 0) {
1005 dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
1006 "t_bytes = %d with total %d bytes%s\n",
1007 packet_bytes, bytes_read, diag);
1008 goto more;
1009 } else if (bytes_read > 0) {
1010 dev_err(&ftdi->udev->dev, "ONLY %d bytes%s\n",
1011 bytes_read, diag);
1012 return -ENOMEM;
1013 } else {
1014 dev_err(&ftdi->udev->dev, "TIMED OUT with packe"
1015 "t_bytes = %d with total %d bytes%s\n",
1016 packet_bytes, bytes_read, diag);
1017 return -ENOMEM;
1018 }
1019 } else if (retval == -EILSEQ) {
1020 dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
1021 " = %d with total %d bytes%s\n", retval,
1022 packet_bytes, bytes_read, diag);
1023 return retval;
1024 } else if (retval) {
1025 dev_err(&ftdi->udev->dev, "error = %d with packet_bytes"
1026 " = %d with total %d bytes%s\n", retval,
1027 packet_bytes, bytes_read, diag);
1028 return retval;
1029 } else if (packet_bytes == 2) {
1030 unsigned char s0 = ftdi->bulk_in_buffer[0];
1031 unsigned char s1 = ftdi->bulk_in_buffer[1];
1032 empty_packets += 1;
1033 if (s0 == 0x31 && s1 == 0x60) {
1034 if (retry_on_empty-- > 0) {
1035 goto more;
1036 } else
1037 return 0;
1038 } else if (s0 == 0x31 && s1 == 0x00) {
1039 if (retry_on_empty-- > 0) {
1040 goto more;
1041 } else
1042 return 0;
1043 } else {
1044 if (retry_on_empty-- > 0) {
1045 goto more;
1046 } else
1047 return 0;
1048 }
1049 } else if (packet_bytes == 1) {
1050 if (retry_on_empty-- > 0) {
1051 goto more;
1052 } else
1053 return 0;
1054 } else {
1055 if (retry_on_empty-- > 0) {
1056 goto more;
1057 } else
1058 return 0;
1059 }
1060 }
1061 more:{
1062 goto read;
1063 }
1064 have:if (ftdi->bulk_in_left > 0) {
1065 u8 c = ftdi->bulk_in_buffer[++ftdi->bulk_in_last];
1066 bytes_read += 1;
1067 ftdi->bulk_in_left -= 1;
1068 if (ftdi->recieved == 0 && c == 0xFF) {
1069 goto have;
1070 } else
1071 *b++ = c;
1072 if (++ftdi->recieved < ftdi->expected) {
1073 goto have;
1074 } else if (ftdi->ed_found) {
1075 int ed_number = (ftdi->response[0] >> 5) & 0x03;
1076 u16 ed_length = (ftdi->response[2] << 8) |
1077 ftdi->response[1];
1078 struct u132_target *target = &ftdi->target[ed_number];
1079 int payload = (ed_length >> 0) & 0x07FF;
1080 char diag[30 *3 + 4];
1081 char *d = diag;
1082 int m = payload;
1083 u8 *c = 4 + ftdi->response;
1084 int s = (sizeof(diag) - 1) / 3;
1085 diag[0] = 0;
1086 while (s-- > 0 && m-- > 0) {
1087 if (s > 0 || m == 0) {
1088 d += sprintf(d, " %02X", *c++);
1089 } else
1090 d += sprintf(d, " ..");
1091 }
1092 ftdi_elan_do_callback(ftdi, target, 4 + ftdi->response,
1093 payload);
1094 ftdi->recieved = 0;
1095 ftdi->expected = 4;
1096 ftdi->ed_found = 0;
1097 b = ftdi->response;
1098 goto have;
1099 } else if (ftdi->expected == 8) {
1100 u8 buscmd;
1101 int respond_head = ftdi->respond_head++;
1102 struct u132_respond *respond = &ftdi->respond[
1103 RESPOND_MASK & respond_head];
1104 u32 data = ftdi->response[7];
1105 data <<= 8;
1106 data |= ftdi->response[6];
1107 data <<= 8;
1108 data |= ftdi->response[5];
1109 data <<= 8;
1110 data |= ftdi->response[4];
1111 *respond->value = data;
1112 *respond->result = 0;
1113 complete(&respond->wait_completion);
1114 ftdi->recieved = 0;
1115 ftdi->expected = 4;
1116 ftdi->ed_found = 0;
1117 b = ftdi->response;
1118 buscmd = (ftdi->response[0] >> 0) & 0x0F;
1119 if (buscmd == 0x00) {
1120 } else if (buscmd == 0x02) {
1121 } else if (buscmd == 0x06) {
1122 } else if (buscmd == 0x0A) {
1123 } else
1124 dev_err(&ftdi->udev->dev, "Uxxx unknown(%0X) va"
1125 "lue = %08X\n", buscmd, data);
1126 goto have;
1127 } else {
1128 if ((ftdi->response[0] & 0x80) == 0x00) {
1129 ftdi->expected = 8;
1130 goto have;
1131 } else {
1132 int ed_number = (ftdi->response[0] >> 5) & 0x03;
1133 int ed_type = (ftdi->response[0] >> 0) & 0x03;
1134 u16 ed_length = (ftdi->response[2] << 8) |
1135 ftdi->response[1];
1136 struct u132_target *target = &ftdi->target[
1137 ed_number];
1138 target->halted = (ftdi->response[0] >> 3) &
1139 0x01;
1140 target->skipped = (ftdi->response[0] >> 2) &
1141 0x01;
1142 target->toggle_bits = (ftdi->response[3] >> 6)
1143 & 0x03;
1144 target->error_count = (ftdi->response[3] >> 4)
1145 & 0x03;
1146 target->condition_code = (ftdi->response[
1147 3] >> 0) & 0x0F;
1148 if ((ftdi->response[0] & 0x10) == 0x00) {
1149 b = have_ed_set_response(ftdi, target,
1150 ed_length, ed_number, ed_type,
1151 b);
1152 goto have;
1153 } else {
1154 b = have_ed_get_response(ftdi, target,
1155 ed_length, ed_number, ed_type,
1156 b);
1157 goto have;
1158 }
1159 }
1160 }
1161 } else
1162 goto more;
1163 }
1164
1165
1166 /*
1167 * create a urb, and a buffer for it, and copy the data to the urb
1168 *
1169 */
1170 static ssize_t ftdi_elan_write(struct file *file,
1171 const char __user *user_buffer, size_t count,
1172 loff_t *ppos)
1173 {
1174 int retval = 0;
1175 struct urb *urb;
1176 char *buf;
1177 struct usb_ftdi *ftdi = file->private_data;
1178
1179 if (ftdi->disconnected > 0) {
1180 return -ENODEV;
1181 }
1182 if (count == 0) {
1183 goto exit;
1184 }
1185 urb = usb_alloc_urb(0, GFP_KERNEL);
1186 if (!urb) {
1187 retval = -ENOMEM;
1188 goto error_1;
1189 }
1190 buf = usb_buffer_alloc(ftdi->udev, count, GFP_KERNEL,
1191 &urb->transfer_dma);
1192 if (!buf) {
1193 retval = -ENOMEM;
1194 goto error_2;
1195 }
1196 if (copy_from_user(buf, user_buffer, count)) {
1197 retval = -EFAULT;
1198 goto error_3;
1199 }
1200 usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
1201 ftdi->bulk_out_endpointAddr), buf, count,
1202 ftdi_elan_write_bulk_callback, ftdi);
1203 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1204 retval = usb_submit_urb(urb, GFP_KERNEL);
1205 if (retval) {
1206 dev_err(&ftdi->udev->dev, "failed submitting write urb, error %"
1207 "d\n", retval);
1208 goto error_3;
1209 }
1210 usb_free_urb(urb);
1211
1212 exit:
1213 return count;
1214 error_3:
1215 usb_buffer_free(ftdi->udev, count, buf, urb->transfer_dma);
1216 error_2:
1217 usb_free_urb(urb);
1218 error_1:
1219 return retval;
1220 }
1221
1222 static const struct file_operations ftdi_elan_fops = {
1223 .owner = THIS_MODULE,
1224 .llseek = no_llseek,
1225 .ioctl = ftdi_elan_ioctl,
1226 .read = ftdi_elan_read,
1227 .write = ftdi_elan_write,
1228 .open = ftdi_elan_open,
1229 .release = ftdi_elan_release,
1230 };
1231
1232 /*
1233 * usb class driver info in order to get a minor number from the usb core,
1234 * and to have the device registered with the driver core
1235 */
1236 static struct usb_class_driver ftdi_elan_jtag_class = {
1237 .name = "ftdi-%d-jtag",
1238 .fops = &ftdi_elan_fops,
1239 .minor_base = USB_FTDI_ELAN_MINOR_BASE,
1240 };
1241
1242 /*
1243 * the following definitions are for the
1244 * ELAN FPGA state machgine processor that
1245 * lies on the other side of the FTDI chip
1246 */
1247 #define cPCIu132rd 0x0
1248 #define cPCIu132wr 0x1
1249 #define cPCIiord 0x2
1250 #define cPCIiowr 0x3
1251 #define cPCImemrd 0x6
1252 #define cPCImemwr 0x7
1253 #define cPCIcfgrd 0xA
1254 #define cPCIcfgwr 0xB
1255 #define cPCInull 0xF
1256 #define cU132cmd_status 0x0
1257 #define cU132flash 0x1
1258 #define cPIDsetup 0x0
1259 #define cPIDout 0x1
1260 #define cPIDin 0x2
1261 #define cPIDinonce 0x3
1262 #define cCCnoerror 0x0
1263 #define cCCcrc 0x1
1264 #define cCCbitstuff 0x2
1265 #define cCCtoggle 0x3
1266 #define cCCstall 0x4
1267 #define cCCnoresp 0x5
1268 #define cCCbadpid1 0x6
1269 #define cCCbadpid2 0x7
1270 #define cCCdataoverrun 0x8
1271 #define cCCdataunderrun 0x9
1272 #define cCCbuffoverrun 0xC
1273 #define cCCbuffunderrun 0xD
1274 #define cCCnotaccessed 0xF
1275 static int ftdi_elan_write_reg(struct usb_ftdi *ftdi, u32 data)
1276 {
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 | cPCIu132wr;
1287 command->length = 0x04;
1288 command->address = 0x00;
1289 command->width = 0x00;
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 }
1303 }
1304
1305 static int ftdi_elan_write_config(struct usb_ftdi *ftdi, int config_offset,
1306 u8 width, u32 data)
1307 {
1308 u8 addressofs = config_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 | (cPCIcfgwr & 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 }
1335 }
1336
1337 static int ftdi_elan_write_pcimem(struct usb_ftdi *ftdi, int mem_offset,
1338 u8 width, u32 data)
1339 {
1340 u8 addressofs = mem_offset / 4;
1341 wait:if (ftdi->disconnected > 0) {
1342 return -ENODEV;
1343 } else {
1344 int command_size;
1345 mutex_lock(&ftdi->u132_lock);
1346 command_size = ftdi->command_next - ftdi->command_head;
1347 if (command_size < COMMAND_SIZE) {
1348 struct u132_command *command = &ftdi->command[
1349 COMMAND_MASK & ftdi->command_next];
1350 command->header = 0x00 | (cPCImemwr & 0x0F);
1351 command->length = 0x04;
1352 command->address = addressofs;
1353 command->width = 0x00 | (width & 0x0F);
1354 command->follows = 4;
1355 command->value = data;
1356 command->buffer = &command->value;
1357 ftdi->command_next += 1;
1358 ftdi_elan_kick_command_queue(ftdi);
1359 mutex_unlock(&ftdi->u132_lock);
1360 return 0;
1361 } else {
1362 mutex_unlock(&ftdi->u132_lock);
1363 msleep(100);
1364 goto wait;
1365 }
1366 }
1367 }
1368
1369 int usb_ftdi_elan_write_pcimem(struct platform_device *pdev, int mem_offset,
1370 u8 width, u32 data)
1371 {
1372 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1373 return ftdi_elan_write_pcimem(ftdi, mem_offset, width, data);
1374 }
1375
1376
1377 EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem);
1378 static int ftdi_elan_read_reg(struct usb_ftdi *ftdi, u32 *data)
1379 {
1380 wait:if (ftdi->disconnected > 0) {
1381 return -ENODEV;
1382 } else {
1383 int command_size;
1384 int respond_size;
1385 mutex_lock(&ftdi->u132_lock);
1386 command_size = ftdi->command_next - ftdi->command_head;
1387 respond_size = ftdi->respond_next - ftdi->respond_head;
1388 if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
1389 {
1390 struct u132_command *command = &ftdi->command[
1391 COMMAND_MASK & ftdi->command_next];
1392 struct u132_respond *respond = &ftdi->respond[
1393 RESPOND_MASK & ftdi->respond_next];
1394 int result = -ENODEV;
1395 respond->result = &result;
1396 respond->header = command->header = 0x00 | cPCIu132rd;
1397 command->length = 0x04;
1398 respond->address = command->address = cU132cmd_status;
1399 command->width = 0x00;
1400 command->follows = 0;
1401 command->value = 0;
1402 command->buffer = NULL;
1403 respond->value = data;
1404 init_completion(&respond->wait_completion);
1405 ftdi->command_next += 1;
1406 ftdi->respond_next += 1;
1407 ftdi_elan_kick_command_queue(ftdi);
1408 mutex_unlock(&ftdi->u132_lock);
1409 wait_for_completion(&respond->wait_completion);
1410 return result;
1411 } else {
1412 mutex_unlock(&ftdi->u132_lock);
1413 msleep(100);
1414 goto wait;
1415 }
1416 }
1417 }
1418
1419 static int ftdi_elan_read_config(struct usb_ftdi *ftdi, int config_offset,
1420 u8 width, u32 *data)
1421 {
1422 u8 addressofs = config_offset / 4;
1423 wait:if (ftdi->disconnected > 0) {
1424 return -ENODEV;
1425 } else {
1426 int command_size;
1427 int respond_size;
1428 mutex_lock(&ftdi->u132_lock);
1429 command_size = ftdi->command_next - ftdi->command_head;
1430 respond_size = ftdi->respond_next - ftdi->respond_head;
1431 if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
1432 {
1433 struct u132_command *command = &ftdi->command[
1434 COMMAND_MASK & ftdi->command_next];
1435 struct u132_respond *respond = &ftdi->respond[
1436 RESPOND_MASK & ftdi->respond_next];
1437 int result = -ENODEV;
1438 respond->result = &result;
1439 respond->header = command->header = 0x00 | (cPCIcfgrd &
1440 0x0F);
1441 command->length = 0x04;
1442 respond->address = command->address = addressofs;
1443 command->width = 0x00 | (width & 0x0F);
1444 command->follows = 0;
1445 command->value = 0;
1446 command->buffer = NULL;
1447 respond->value = data;
1448 init_completion(&respond->wait_completion);
1449 ftdi->command_next += 1;
1450 ftdi->respond_next += 1;
1451 ftdi_elan_kick_command_queue(ftdi);
1452 mutex_unlock(&ftdi->u132_lock);
1453 wait_for_completion(&respond->wait_completion);
1454 return result;
1455 } else {
1456 mutex_unlock(&ftdi->u132_lock);
1457 msleep(100);
1458 goto wait;
1459 }
1460 }
1461 }
1462
1463 static int ftdi_elan_read_pcimem(struct usb_ftdi *ftdi, int mem_offset,
1464 u8 width, u32 *data)
1465 {
1466 u8 addressofs = mem_offset / 4;
1467 wait:if (ftdi->disconnected > 0) {
1468 return -ENODEV;
1469 } else {
1470 int command_size;
1471 int respond_size;
1472 mutex_lock(&ftdi->u132_lock);
1473 command_size = ftdi->command_next - ftdi->command_head;
1474 respond_size = ftdi->respond_next - ftdi->respond_head;
1475 if (command_size < COMMAND_SIZE && respond_size < RESPOND_SIZE)
1476 {
1477 struct u132_command *command = &ftdi->command[
1478 COMMAND_MASK & ftdi->command_next];
1479 struct u132_respond *respond = &ftdi->respond[
1480 RESPOND_MASK & ftdi->respond_next];
1481 int result = -ENODEV;
1482 respond->result = &result;
1483 respond->header = command->header = 0x00 | (cPCImemrd &
1484 0x0F);
1485 command->length = 0x04;
1486 respond->address = command->address = addressofs;
1487 command->width = 0x00 | (width & 0x0F);
1488 command->follows = 0;
1489 command->value = 0;
1490 command->buffer = NULL;
1491 respond->value = data;
1492 init_completion(&respond->wait_completion);
1493 ftdi->command_next += 1;
1494 ftdi->respond_next += 1;
1495 ftdi_elan_kick_command_queue(ftdi);
1496 mutex_unlock(&ftdi->u132_lock);
1497 wait_for_completion(&respond->wait_completion);
1498 return result;
1499 } else {
1500 mutex_unlock(&ftdi->u132_lock);
1501 msleep(100);
1502 goto wait;
1503 }
1504 }
1505 }
1506
1507 int usb_ftdi_elan_read_pcimem(struct platform_device *pdev, int mem_offset,
1508 u8 width, u32 *data)
1509 {
1510 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1511 if (ftdi->initialized == 0) {
1512 return -ENODEV;
1513 } else
1514 return ftdi_elan_read_pcimem(ftdi, mem_offset, width, data);
1515 }
1516
1517
1518 EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem);
1519 static int ftdi_elan_edset_setup(struct usb_ftdi *ftdi, u8 ed_number,
1520 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1521 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1522 int toggle_bits, int error_count, int condition_code, int repeat_number,
1523 int halted, int skipped, int actual, int non_null))
1524 {
1525 u8 ed = ed_number - 1;
1526 wait:if (ftdi->disconnected > 0) {
1527 return -ENODEV;
1528 } else if (ftdi->initialized == 0) {
1529 return -ENODEV;
1530 } else {
1531 int command_size;
1532 mutex_lock(&ftdi->u132_lock);
1533 command_size = ftdi->command_next - ftdi->command_head;
1534 if (command_size < COMMAND_SIZE) {
1535 struct u132_target *target = &ftdi->target[ed];
1536 struct u132_command *command = &ftdi->command[
1537 COMMAND_MASK & ftdi->command_next];
1538 command->header = 0x80 | (ed << 5);
1539 command->length = 0x8007;
1540 command->address = (toggle_bits << 6) | (ep_number << 2)
1541 | (address << 0);
1542 command->width = usb_maxpacket(urb->dev, urb->pipe,
1543 usb_pipeout(urb->pipe));
1544 command->follows = 8;
1545 command->value = 0;
1546 command->buffer = urb->setup_packet;
1547 target->callback = callback;
1548 target->endp = endp;
1549 target->urb = urb;
1550 target->active = 1;
1551 ftdi->command_next += 1;
1552 ftdi_elan_kick_command_queue(ftdi);
1553 mutex_unlock(&ftdi->u132_lock);
1554 return 0;
1555 } else {
1556 mutex_unlock(&ftdi->u132_lock);
1557 msleep(100);
1558 goto wait;
1559 }
1560 }
1561 }
1562
1563 int usb_ftdi_elan_edset_setup(struct platform_device *pdev, u8 ed_number,
1564 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1565 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1566 int toggle_bits, int error_count, int condition_code, int repeat_number,
1567 int halted, int skipped, int actual, int non_null))
1568 {
1569 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1570 return ftdi_elan_edset_setup(ftdi, ed_number, endp, urb, address,
1571 ep_number, toggle_bits, callback);
1572 }
1573
1574
1575 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup);
1576 static int ftdi_elan_edset_input(struct usb_ftdi *ftdi, u8 ed_number,
1577 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1578 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1579 int toggle_bits, int error_count, int condition_code, int repeat_number,
1580 int halted, int skipped, int actual, int non_null))
1581 {
1582 u8 ed = ed_number - 1;
1583 wait:if (ftdi->disconnected > 0) {
1584 return -ENODEV;
1585 } else if (ftdi->initialized == 0) {
1586 return -ENODEV;
1587 } else {
1588 int command_size;
1589 mutex_lock(&ftdi->u132_lock);
1590 command_size = ftdi->command_next - ftdi->command_head;
1591 if (command_size < COMMAND_SIZE) {
1592 struct u132_target *target = &ftdi->target[ed];
1593 struct u132_command *command = &ftdi->command[
1594 COMMAND_MASK & ftdi->command_next];
1595 int remaining_length = urb->transfer_buffer_length -
1596 urb->actual_length;
1597 command->header = 0x82 | (ed << 5);
1598 if (remaining_length == 0) {
1599 command->length = 0x0000;
1600 } else if (remaining_length > 1024) {
1601 command->length = 0x8000 | 1023;
1602 } else
1603 command->length = 0x8000 | (remaining_length -
1604 1);
1605 command->address = (toggle_bits << 6) | (ep_number << 2)
1606 | (address << 0);
1607 command->width = usb_maxpacket(urb->dev, urb->pipe,
1608 usb_pipeout(urb->pipe));
1609 command->follows = 0;
1610 command->value = 0;
1611 command->buffer = NULL;
1612 target->callback = callback;
1613 target->endp = endp;
1614 target->urb = urb;
1615 target->active = 1;
1616 ftdi->command_next += 1;
1617 ftdi_elan_kick_command_queue(ftdi);
1618 mutex_unlock(&ftdi->u132_lock);
1619 return 0;
1620 } else {
1621 mutex_unlock(&ftdi->u132_lock);
1622 msleep(100);
1623 goto wait;
1624 }
1625 }
1626 }
1627
1628 int usb_ftdi_elan_edset_input(struct platform_device *pdev, u8 ed_number,
1629 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1630 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1631 int toggle_bits, int error_count, int condition_code, int repeat_number,
1632 int halted, int skipped, int actual, int non_null))
1633 {
1634 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1635 return ftdi_elan_edset_input(ftdi, ed_number, endp, urb, address,
1636 ep_number, toggle_bits, callback);
1637 }
1638
1639
1640 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input);
1641 static int ftdi_elan_edset_empty(struct usb_ftdi *ftdi, u8 ed_number,
1642 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1643 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1644 int toggle_bits, int error_count, int condition_code, int repeat_number,
1645 int halted, int skipped, int actual, int non_null))
1646 {
1647 u8 ed = ed_number - 1;
1648 wait:if (ftdi->disconnected > 0) {
1649 return -ENODEV;
1650 } else if (ftdi->initialized == 0) {
1651 return -ENODEV;
1652 } else {
1653 int command_size;
1654 mutex_lock(&ftdi->u132_lock);
1655 command_size = ftdi->command_next - ftdi->command_head;
1656 if (command_size < COMMAND_SIZE) {
1657 struct u132_target *target = &ftdi->target[ed];
1658 struct u132_command *command = &ftdi->command[
1659 COMMAND_MASK & ftdi->command_next];
1660 command->header = 0x81 | (ed << 5);
1661 command->length = 0x0000;
1662 command->address = (toggle_bits << 6) | (ep_number << 2)
1663 | (address << 0);
1664 command->width = usb_maxpacket(urb->dev, urb->pipe,
1665 usb_pipeout(urb->pipe));
1666 command->follows = 0;
1667 command->value = 0;
1668 command->buffer = NULL;
1669 target->callback = callback;
1670 target->endp = endp;
1671 target->urb = urb;
1672 target->active = 1;
1673 ftdi->command_next += 1;
1674 ftdi_elan_kick_command_queue(ftdi);
1675 mutex_unlock(&ftdi->u132_lock);
1676 return 0;
1677 } else {
1678 mutex_unlock(&ftdi->u132_lock);
1679 msleep(100);
1680 goto wait;
1681 }
1682 }
1683 }
1684
1685 int usb_ftdi_elan_edset_empty(struct platform_device *pdev, u8 ed_number,
1686 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1687 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1688 int toggle_bits, int error_count, int condition_code, int repeat_number,
1689 int halted, int skipped, int actual, int non_null))
1690 {
1691 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1692 return ftdi_elan_edset_empty(ftdi, ed_number, endp, urb, address,
1693 ep_number, toggle_bits, callback);
1694 }
1695
1696
1697 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty);
1698 static int ftdi_elan_edset_output(struct usb_ftdi *ftdi, u8 ed_number,
1699 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1700 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1701 int toggle_bits, int error_count, int condition_code, int repeat_number,
1702 int halted, int skipped, int actual, int non_null))
1703 {
1704 u8 ed = ed_number - 1;
1705 wait:if (ftdi->disconnected > 0) {
1706 return -ENODEV;
1707 } else if (ftdi->initialized == 0) {
1708 return -ENODEV;
1709 } else {
1710 int command_size;
1711 mutex_lock(&ftdi->u132_lock);
1712 command_size = ftdi->command_next - ftdi->command_head;
1713 if (command_size < COMMAND_SIZE) {
1714 u8 *b;
1715 u16 urb_size;
1716 int i = 0;
1717 char data[30 *3 + 4];
1718 char *d = data;
1719 int m = (sizeof(data) - 1) / 3;
1720 int l = 0;
1721 struct u132_target *target = &ftdi->target[ed];
1722 struct u132_command *command = &ftdi->command[
1723 COMMAND_MASK & ftdi->command_next];
1724 command->header = 0x81 | (ed << 5);
1725 command->address = (toggle_bits << 6) | (ep_number << 2)
1726 | (address << 0);
1727 command->width = usb_maxpacket(urb->dev, urb->pipe,
1728 usb_pipeout(urb->pipe));
1729 command->follows = min(1024,
1730 urb->transfer_buffer_length -
1731 urb->actual_length);
1732 command->value = 0;
1733 command->buffer = urb->transfer_buffer +
1734 urb->actual_length;
1735 command->length = 0x8000 | (command->follows - 1);
1736 b = command->buffer;
1737 urb_size = command->follows;
1738 data[0] = 0;
1739 while (urb_size-- > 0) {
1740 if (i > m) {
1741 } else if (i++ < m) {
1742 int w = sprintf(d, " %02X", *b++);
1743 d += w;
1744 l += w;
1745 } else
1746 d += sprintf(d, " ..");
1747 }
1748 target->callback = callback;
1749 target->endp = endp;
1750 target->urb = urb;
1751 target->active = 1;
1752 ftdi->command_next += 1;
1753 ftdi_elan_kick_command_queue(ftdi);
1754 mutex_unlock(&ftdi->u132_lock);
1755 return 0;
1756 } else {
1757 mutex_unlock(&ftdi->u132_lock);
1758 msleep(100);
1759 goto wait;
1760 }
1761 }
1762 }
1763
1764 int usb_ftdi_elan_edset_output(struct platform_device *pdev, u8 ed_number,
1765 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1766 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1767 int toggle_bits, int error_count, int condition_code, int repeat_number,
1768 int halted, int skipped, int actual, int non_null))
1769 {
1770 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1771 return ftdi_elan_edset_output(ftdi, ed_number, endp, urb, address,
1772 ep_number, toggle_bits, callback);
1773 }
1774
1775
1776 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output);
1777 static int ftdi_elan_edset_single(struct usb_ftdi *ftdi, u8 ed_number,
1778 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1779 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1780 int toggle_bits, int error_count, int condition_code, int repeat_number,
1781 int halted, int skipped, int actual, int non_null))
1782 {
1783 u8 ed = ed_number - 1;
1784 wait:if (ftdi->disconnected > 0) {
1785 return -ENODEV;
1786 } else if (ftdi->initialized == 0) {
1787 return -ENODEV;
1788 } else {
1789 int command_size;
1790 mutex_lock(&ftdi->u132_lock);
1791 command_size = ftdi->command_next - ftdi->command_head;
1792 if (command_size < COMMAND_SIZE) {
1793 int remaining_length = urb->transfer_buffer_length -
1794 urb->actual_length;
1795 struct u132_target *target = &ftdi->target[ed];
1796 struct u132_command *command = &ftdi->command[
1797 COMMAND_MASK & ftdi->command_next];
1798 command->header = 0x83 | (ed << 5);
1799 if (remaining_length == 0) {
1800 command->length = 0x0000;
1801 } else if (remaining_length > 1024) {
1802 command->length = 0x8000 | 1023;
1803 } else
1804 command->length = 0x8000 | (remaining_length -
1805 1);
1806 command->address = (toggle_bits << 6) | (ep_number << 2)
1807 | (address << 0);
1808 command->width = usb_maxpacket(urb->dev, urb->pipe,
1809 usb_pipeout(urb->pipe));
1810 command->follows = 0;
1811 command->value = 0;
1812 command->buffer = NULL;
1813 target->callback = callback;
1814 target->endp = endp;
1815 target->urb = urb;
1816 target->active = 1;
1817 ftdi->command_next += 1;
1818 ftdi_elan_kick_command_queue(ftdi);
1819 mutex_unlock(&ftdi->u132_lock);
1820 return 0;
1821 } else {
1822 mutex_unlock(&ftdi->u132_lock);
1823 msleep(100);
1824 goto wait;
1825 }
1826 }
1827 }
1828
1829 int usb_ftdi_elan_edset_single(struct platform_device *pdev, u8 ed_number,
1830 void *endp, struct urb *urb, u8 address, u8 ep_number, u8 toggle_bits,
1831 void (*callback) (void *endp, struct urb *urb, u8 *buf, int len,
1832 int toggle_bits, int error_count, int condition_code, int repeat_number,
1833 int halted, int skipped, int actual, int non_null))
1834 {
1835 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1836 return ftdi_elan_edset_single(ftdi, ed_number, endp, urb, address,
1837 ep_number, toggle_bits, callback);
1838 }
1839
1840
1841 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single);
1842 static int ftdi_elan_edset_flush(struct usb_ftdi *ftdi, u8 ed_number,
1843 void *endp)
1844 {
1845 u8 ed = ed_number - 1;
1846 if (ftdi->disconnected > 0) {
1847 return -ENODEV;
1848 } else if (ftdi->initialized == 0) {
1849 return -ENODEV;
1850 } else {
1851 struct u132_target *target = &ftdi->target[ed];
1852 mutex_lock(&ftdi->u132_lock);
1853 if (target->abandoning > 0) {
1854 mutex_unlock(&ftdi->u132_lock);
1855 return 0;
1856 } else {
1857 target->abandoning = 1;
1858 wait_1:if (target->active == 1) {
1859 int command_size = ftdi->command_next -
1860 ftdi->command_head;
1861 if (command_size < COMMAND_SIZE) {
1862 struct u132_command *command =
1863 &ftdi->command[COMMAND_MASK &
1864 ftdi->command_next];
1865 command->header = 0x80 | (ed << 5) |
1866 0x4;
1867 command->length = 0x00;
1868 command->address = 0x00;
1869 command->width = 0x00;
1870 command->follows = 0;
1871 command->value = 0;
1872 command->buffer = &command->value;
1873 ftdi->command_next += 1;
1874 ftdi_elan_kick_command_queue(ftdi);
1875 } else {
1876 mutex_unlock(&ftdi->u132_lock);
1877 msleep(100);
1878 mutex_lock(&ftdi->u132_lock);
1879 goto wait_1;
1880 }
1881 }
1882 mutex_unlock(&ftdi->u132_lock);
1883 return 0;
1884 }
1885 }
1886 }
1887
1888 int usb_ftdi_elan_edset_flush(struct platform_device *pdev, u8 ed_number,
1889 void *endp)
1890 {
1891 struct usb_ftdi *ftdi = platform_device_to_usb_ftdi(pdev);
1892 return ftdi_elan_edset_flush(ftdi, ed_number, endp);
1893 }
1894
1895
1896 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush);
1897 static int ftdi_elan_flush_input_fifo(struct usb_ftdi *ftdi)
1898 {
1899 int retry_on_empty = 10;
1900 int retry_on_timeout = 5;
1901 int retry_on_status = 20;
1902 more:{
1903 int packet_bytes = 0;
1904 int retval = usb_bulk_msg(ftdi->udev,
1905 usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
1906 ftdi->bulk_in_buffer, ftdi->bulk_in_size,
1907 &packet_bytes, msecs_to_jiffies(100));
1908 if (packet_bytes > 2) {
1909 char diag[30 *3 + 4];
1910 char *d = diag;
1911 int m = (sizeof(diag) - 1) / 3;
1912 char *b = ftdi->bulk_in_buffer;
1913 int bytes_read = 0;
1914 diag[0] = 0;
1915 while (packet_bytes-- > 0) {
1916 char c = *b++;
1917 if (bytes_read < m) {
1918 d += sprintf(d, " %02X",
1919 0x000000FF & c);
1920 } else if (bytes_read > m) {
1921 } else
1922 d += sprintf(d, " ..");
1923 bytes_read += 1;
1924 continue;
1925 }
1926 goto more;
1927 } else if (packet_bytes > 1) {
1928 char s1 = ftdi->bulk_in_buffer[0];
1929 char s2 = ftdi->bulk_in_buffer[1];
1930 if (s1 == 0x31 && s2 == 0x60) {
1931 return 0;
1932 } else if (retry_on_status-- > 0) {
1933 goto more;
1934 } else {
1935 dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
1936 "imit reached\n");
1937 return -EFAULT;
1938 }
1939 } else if (packet_bytes > 0) {
1940 char b1 = ftdi->bulk_in_buffer[0];
1941 dev_err(&ftdi->udev->dev, "only one byte flushed from F"
1942 "TDI = %02X\n", b1);
1943 if (retry_on_status-- > 0) {
1944 goto more;
1945 } else {
1946 dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
1947 "imit reached\n");
1948 return -EFAULT;
1949 }
1950 } else if (retval == -ETIMEDOUT) {
1951 if (retry_on_timeout-- > 0) {
1952 goto more;
1953 } else {
1954 dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
1955 "t reached\n");
1956 return -ENOMEM;
1957 }
1958 } else if (retval == 0) {
1959 if (retry_on_empty-- > 0) {
1960 goto more;
1961 } else {
1962 dev_err(&ftdi->udev->dev, "empty packet retry l"
1963 "imit reached\n");
1964 return -ENOMEM;
1965 }
1966 } else {
1967 dev_err(&ftdi->udev->dev, "error = %d\n", retval);
1968 return retval;
1969 }
1970 }
1971 return -1;
1972 }
1973
1974
1975 /*
1976 * send the long flush sequence
1977 *
1978 */
1979 static int ftdi_elan_synchronize_flush(struct usb_ftdi *ftdi)
1980 {
1981 int retval;
1982 struct urb *urb;
1983 char *buf;
1984 int I = 257;
1985 int i = 0;
1986 urb = usb_alloc_urb(0, GFP_KERNEL);
1987 if (!urb) {
1988 dev_err(&ftdi->udev->dev, "could not alloc a urb for flush sequ"
1989 "ence\n");
1990 return -ENOMEM;
1991 }
1992 buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
1993 if (!buf) {
1994 dev_err(&ftdi->udev->dev, "could not get a buffer for flush seq"
1995 "uence\n");
1996 usb_free_urb(urb);
1997 return -ENOMEM;
1998 }
1999 while (I-- > 0)
2000 buf[i++] = 0x55;
2001 usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
2002 ftdi->bulk_out_endpointAddr), buf, i,
2003 ftdi_elan_write_bulk_callback, ftdi);
2004 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2005 retval = usb_submit_urb(urb, GFP_KERNEL);
2006 if (retval) {
2007 dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
2008 "flush sequence\n");
2009 usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
2010 usb_free_urb(urb);
2011 return -ENOMEM;
2012 }
2013 usb_free_urb(urb);
2014 return 0;
2015 }
2016
2017
2018 /*
2019 * send the reset sequence
2020 *
2021 */
2022 static int ftdi_elan_synchronize_reset(struct usb_ftdi *ftdi)
2023 {
2024 int retval;
2025 struct urb *urb;
2026 char *buf;
2027 int I = 4;
2028 int i = 0;
2029 urb = usb_alloc_urb(0, GFP_KERNEL);
2030 if (!urb) {
2031 dev_err(&ftdi->udev->dev, "could not get a urb for the reset se"
2032 "quence\n");
2033 return -ENOMEM;
2034 }
2035 buf = usb_buffer_alloc(ftdi->udev, I, GFP_KERNEL, &urb->transfer_dma);
2036 if (!buf) {
2037 dev_err(&ftdi->udev->dev, "could not get a buffer for the reset"
2038 " sequence\n");
2039 usb_free_urb(urb);
2040 return -ENOMEM;
2041 }
2042 buf[i++] = 0x55;
2043 buf[i++] = 0xAA;
2044 buf[i++] = 0x5A;
2045 buf[i++] = 0xA5;
2046 usb_fill_bulk_urb(urb, ftdi->udev, usb_sndbulkpipe(ftdi->udev,
2047 ftdi->bulk_out_endpointAddr), buf, i,
2048 ftdi_elan_write_bulk_callback, ftdi);
2049 urb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
2050 retval = usb_submit_urb(urb, GFP_KERNEL);
2051 if (retval) {
2052 dev_err(&ftdi->udev->dev, "failed to submit urb containing the "
2053 "reset sequence\n");
2054 usb_buffer_free(ftdi->udev, i, buf, urb->transfer_dma);
2055 usb_free_urb(urb);
2056 return -ENOMEM;
2057 }
2058 usb_free_urb(urb);
2059 return 0;
2060 }
2061
2062 static int ftdi_elan_synchronize(struct usb_ftdi *ftdi)
2063 {
2064 int retval;
2065 int long_stop = 10;
2066 int retry_on_timeout = 5;
2067 int retry_on_empty = 10;
2068 int err_count = 0;
2069 retval = ftdi_elan_flush_input_fifo(ftdi);
2070 if (retval)
2071 return retval;
2072 ftdi->bulk_in_left = 0;
2073 ftdi->bulk_in_last = -1;
2074 while (long_stop-- > 0) {
2075 int read_stop;
2076 int read_stuck;
2077 retval = ftdi_elan_synchronize_flush(ftdi);
2078 if (retval)
2079 return retval;
2080 retval = ftdi_elan_flush_input_fifo(ftdi);
2081 if (retval)
2082 return retval;
2083 reset:retval = ftdi_elan_synchronize_reset(ftdi);
2084 if (retval)
2085 return retval;
2086 read_stop = 100;
2087 read_stuck = 10;
2088 read:{
2089 int packet_bytes = 0;
2090 retval = usb_bulk_msg(ftdi->udev,
2091 usb_rcvbulkpipe(ftdi->udev,
2092 ftdi->bulk_in_endpointAddr),
2093 ftdi->bulk_in_buffer, ftdi->bulk_in_size,
2094 &packet_bytes, msecs_to_jiffies(500));
2095 if (packet_bytes > 2) {
2096 char diag[30 *3 + 4];
2097 char *d = diag;
2098 int m = (sizeof(diag) - 1) / 3;
2099 char *b = ftdi->bulk_in_buffer;
2100 int bytes_read = 0;
2101 unsigned char c = 0;
2102 diag[0] = 0;
2103 while (packet_bytes-- > 0) {
2104 c = *b++;
2105 if (bytes_read < m) {
2106 d += sprintf(d, " %02X", c);
2107 } else if (bytes_read > m) {
2108 } else
2109 d += sprintf(d, " ..");
2110 bytes_read += 1;
2111 continue;
2112 }
2113 if (c == 0x7E) {
2114 return 0;
2115 } else {
2116 if (c == 0x55) {
2117 goto read;
2118 } else if (read_stop-- > 0) {
2119 goto read;
2120 } else {
2121 dev_err(&ftdi->udev->dev, "retr"
2122 "y limit reached\n");
2123 continue;
2124 }
2125 }
2126 } else if (packet_bytes > 1) {
2127 unsigned char s1 = ftdi->bulk_in_buffer[0];
2128 unsigned char s2 = ftdi->bulk_in_buffer[1];
2129 if (s1 == 0x31 && s2 == 0x00) {
2130 if (read_stuck-- > 0) {
2131 goto read;
2132 } else
2133 goto reset;
2134 } else if (s1 == 0x31 && s2 == 0x60) {
2135 if (read_stop-- > 0) {
2136 goto read;
2137 } else {
2138 dev_err(&ftdi->udev->dev, "retr"
2139 "y limit reached\n");
2140 continue;
2141 }
2142 } else {
2143 if (read_stop-- > 0) {
2144 goto read;
2145 } else {
2146 dev_err(&ftdi->udev->dev, "retr"
2147 "y limit reached\n");
2148 continue;
2149 }
2150 }
2151 } else if (packet_bytes > 0) {
2152 if (read_stop-- > 0) {
2153 goto read;
2154 } else {
2155 dev_err(&ftdi->udev->dev, "retry limit "
2156 "reached\n");
2157 continue;
2158 }
2159 } else if (retval == -ETIMEDOUT) {
2160 if (retry_on_timeout-- > 0) {
2161 goto read;
2162 } else {
2163 dev_err(&ftdi->udev->dev, "TIMED OUT re"
2164 "try limit reached\n");
2165 continue;
2166 }
2167 } else if (retval == 0) {
2168 if (retry_on_empty-- > 0) {
2169 goto read;
2170 } else {
2171 dev_err(&ftdi->udev->dev, "empty packet"
2172 " retry limit reached\n");
2173 continue;
2174 }
2175 } else {
2176 err_count += 1;
2177 dev_err(&ftdi->udev->dev, "error = %d\n",
2178 retval);
2179 if (read_stop-- > 0) {
2180 goto read;
2181 } else {
2182 dev_err(&ftdi->udev->dev, "retry limit "
2183 "reached\n");
2184 continue;
2185 }
2186 }
2187 }
2188 }
2189 dev_err(&ftdi->udev->dev, "failed to synchronize\n");
2190 return -EFAULT;
2191 }
2192
2193 static int ftdi_elan_stuck_waiting(struct usb_ftdi *ftdi)
2194 {
2195 int retry_on_empty = 10;
2196 int retry_on_timeout = 5;
2197 int retry_on_status = 50;
2198 more:{
2199 int packet_bytes = 0;
2200 int retval = usb_bulk_msg(ftdi->udev,
2201 usb_rcvbulkpipe(ftdi->udev, ftdi->bulk_in_endpointAddr),
2202 ftdi->bulk_in_buffer, ftdi->bulk_in_size,
2203 &packet_bytes, msecs_to_jiffies(1000));
2204 if (packet_bytes > 2) {
2205 char diag[30 *3 + 4];
2206 char *d = diag;
2207 int m = (sizeof(diag) - 1) / 3;
2208 char *b = ftdi->bulk_in_buffer;
2209 int bytes_read = 0;
2210 diag[0] = 0;
2211 while (packet_bytes-- > 0) {
2212 char c = *b++;
2213 if (bytes_read < m) {
2214 d += sprintf(d, " %02X",
2215 0x000000FF & c);
2216 } else if (bytes_read > m) {
2217 } else
2218 d += sprintf(d, " ..");
2219 bytes_read += 1;
2220 continue;
2221 }
2222 goto more;
2223 } else if (packet_bytes > 1) {
2224 char s1 = ftdi->bulk_in_buffer[0];
2225 char s2 = ftdi->bulk_in_buffer[1];
2226 if (s1 == 0x31 && s2 == 0x60) {
2227 return 0;
2228 } else if (retry_on_status-- > 0) {
2229 msleep(5);
2230 goto more;
2231 } else
2232 return -EFAULT;
2233 } else if (packet_bytes > 0) {
2234 char b1 = ftdi->bulk_in_buffer[0];
2235 dev_err(&ftdi->udev->dev, "only one byte flushed from F"
2236 "TDI = %02X\n", b1);
2237 if (retry_on_status-- > 0) {
2238 msleep(5);
2239 goto more;
2240 } else {
2241 dev_err(&ftdi->udev->dev, "STATUS ERROR retry l"
2242 "imit reached\n");
2243 return -EFAULT;
2244 }
2245 } else if (retval == -ETIMEDOUT) {
2246 if (retry_on_timeout-- > 0) {
2247 goto more;
2248 } else {
2249 dev_err(&ftdi->udev->dev, "TIMED OUT retry limi"
2250 "t reached\n");
2251 return -ENOMEM;
2252 }
2253 } else if (retval == 0) {
2254 if (retry_on_empty-- > 0) {
2255 goto more;
2256 } else {
2257 dev_err(&ftdi->udev->dev, "empty packet retry l"
2258 "imit reached\n");
2259 return -ENOMEM;
2260 }
2261 } else {
2262 dev_err(&ftdi->udev->dev, "error = %d\n", retval);
2263 return -ENOMEM;
2264 }
2265 }
2266 return -1;
2267 }
2268
2269 static int ftdi_elan_checkingPCI(struct usb_ftdi *ftdi)
2270 {
2271 int UxxxStatus = ftdi_elan_read_reg(ftdi, &ftdi->controlreg);
2272 if (UxxxStatus)
2273 return UxxxStatus;
2274 if (ftdi->controlreg & 0x00400000) {
2275 if (ftdi->card_ejected) {
2276 } else {
2277 ftdi->card_ejected = 1;
2278 dev_err(&ftdi->udev->dev, "CARD EJECTED - controlreg = "
2279 "%08X\n", ftdi->controlreg);
2280 }
2281 return -ENODEV;
2282 } else {
2283 u8 fn = ftdi->function - 1;
2284 int activePCIfn = fn << 8;
2285 u32 pcidata;
2286 u32 pciVID;
2287 u32 pciPID;
2288 int reg = 0;
2289 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2290 &pcidata);
2291 if (UxxxStatus)
2292 return UxxxStatus;
2293 pciVID = pcidata & 0xFFFF;
2294 pciPID = (pcidata >> 16) & 0xFFFF;
2295 if (pciVID == ftdi->platform_data.vendor && pciPID ==
2296 ftdi->platform_data.device) {
2297 return 0;
2298 } else {
2299 dev_err(&ftdi->udev->dev, "vendor=%04X pciVID=%04X devi"
2300 "ce=%04X pciPID=%04X\n",
2301 ftdi->platform_data.vendor, pciVID,
2302 ftdi->platform_data.device, pciPID);
2303 return -ENODEV;
2304 }
2305 }
2306 }
2307
2308
2309 #define ftdi_read_pcimem(ftdi, member, data) ftdi_elan_read_pcimem(ftdi, \
2310 offsetof(struct ohci_regs, member), 0, data);
2311 #define ftdi_write_pcimem(ftdi, member, data) ftdi_elan_write_pcimem(ftdi, \
2312 offsetof(struct ohci_regs, member), 0, data);
2313
2314 #define OHCI_CONTROL_INIT OHCI_CTRL_CBSR
2315 #define OHCI_INTR_INIT (OHCI_INTR_MIE | OHCI_INTR_UE | OHCI_INTR_RD | \
2316 OHCI_INTR_WDH)
2317 static int ftdi_elan_check_controller(struct usb_ftdi *ftdi, int quirk)
2318 {
2319 int devices = 0;
2320 int retval;
2321 u32 hc_control;
2322 int num_ports;
2323 u32 control;
2324 u32 rh_a = -1;
2325 u32 status;
2326 u32 fminterval;
2327 u32 hc_fminterval;
2328 u32 periodicstart;
2329 u32 cmdstatus;
2330 u32 roothub_a;
2331 int mask = OHCI_INTR_INIT;
2332 int sleep_time = 0;
2333 int reset_timeout = 30; /* ... allow extra time */
2334 int temp;
2335 retval = ftdi_write_pcimem(ftdi, intrdisable, OHCI_INTR_MIE);
2336 if (retval)
2337 return retval;
2338 retval = ftdi_read_pcimem(ftdi, control, &control);
2339 if (retval)
2340 return retval;
2341 retval = ftdi_read_pcimem(ftdi, roothub.a, &rh_a);
2342 if (retval)
2343 return retval;
2344 num_ports = rh_a & RH_A_NDP;
2345 retval = ftdi_read_pcimem(ftdi, fminterval, &hc_fminterval);
2346 if (retval)
2347 return retval;
2348 hc_fminterval &= 0x3fff;
2349 if (hc_fminterval != FI) {
2350 }
2351 hc_fminterval |= FSMP(hc_fminterval) << 16;
2352 retval = ftdi_read_pcimem(ftdi, control, &hc_control);
2353 if (retval)
2354 return retval;
2355 switch (hc_control & OHCI_CTRL_HCFS) {
2356 case OHCI_USB_OPER:
2357 sleep_time = 0;
2358 break;
2359 case OHCI_USB_SUSPEND:
2360 case OHCI_USB_RESUME:
2361 hc_control &= OHCI_CTRL_RWC;
2362 hc_control |= OHCI_USB_RESUME;
2363 sleep_time = 10;
2364 break;
2365 default:
2366 hc_control &= OHCI_CTRL_RWC;
2367 hc_control |= OHCI_USB_RESET;
2368 sleep_time = 50;
2369 break;
2370 }
2371 retval = ftdi_write_pcimem(ftdi, control, hc_control);
2372 if (retval)
2373 return retval;
2374 retval = ftdi_read_pcimem(ftdi, control, &control);
2375 if (retval)
2376 return retval;
2377 msleep(sleep_time);
2378 retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a);
2379 if (retval)
2380 return retval;
2381 if (!(roothub_a & RH_A_NPS)) { /* power down each port */
2382 for (temp = 0; temp < num_ports; temp++) {
2383 retval = ftdi_write_pcimem(ftdi,
2384 roothub.portstatus[temp], RH_PS_LSDA);
2385 if (retval)
2386 return retval;
2387 }
2388 }
2389 retval = ftdi_read_pcimem(ftdi, control, &control);
2390 if (retval)
2391 return retval;
2392 retry:retval = ftdi_read_pcimem(ftdi, cmdstatus, &status);
2393 if (retval)
2394 return retval;
2395 retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_HCR);
2396 if (retval)
2397 return retval;
2398 extra:{
2399 retval = ftdi_read_pcimem(ftdi, cmdstatus, &status);
2400 if (retval)
2401 return retval;
2402 if (0 != (status & OHCI_HCR)) {
2403 if (--reset_timeout == 0) {
2404 dev_err(&ftdi->udev->dev, "USB HC reset timed o"
2405 "ut!\n");
2406 return -ENODEV;
2407 } else {
2408 msleep(5);
2409 goto extra;
2410 }
2411 }
2412 }
2413 if (quirk & OHCI_QUIRK_INITRESET) {
2414 retval = ftdi_write_pcimem(ftdi, control, hc_control);
2415 if (retval)
2416 return retval;
2417 retval = ftdi_read_pcimem(ftdi, control, &control);
2418 if (retval)
2419 return retval;
2420 }
2421 retval = ftdi_write_pcimem(ftdi, ed_controlhead, 0x00000000);
2422 if (retval)
2423 return retval;
2424 retval = ftdi_write_pcimem(ftdi, ed_bulkhead, 0x11000000);
2425 if (retval)
2426 return retval;
2427 retval = ftdi_write_pcimem(ftdi, hcca, 0x00000000);
2428 if (retval)
2429 return retval;
2430 retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval);
2431 if (retval)
2432 return retval;
2433 retval = ftdi_write_pcimem(ftdi, fminterval,
2434 ((fminterval & FIT) ^ FIT) | hc_fminterval);
2435 if (retval)
2436 return retval;
2437 retval = ftdi_write_pcimem(ftdi, periodicstart,
2438 ((9 *hc_fminterval) / 10) & 0x3fff);
2439 if (retval)
2440 return retval;
2441 retval = ftdi_read_pcimem(ftdi, fminterval, &fminterval);
2442 if (retval)
2443 return retval;
2444 retval = ftdi_read_pcimem(ftdi, periodicstart, &periodicstart);
2445 if (retval)
2446 return retval;
2447 if (0 == (fminterval & 0x3fff0000) || 0 == periodicstart) {
2448 if (!(quirk & OHCI_QUIRK_INITRESET)) {
2449 quirk |= OHCI_QUIRK_INITRESET;
2450 goto retry;
2451 } else
2452 dev_err(&ftdi->udev->dev, "init err(%08x %04x)\n",
2453 fminterval, periodicstart);
2454 } /* start controller operations */
2455 hc_control &= OHCI_CTRL_RWC;
2456 hc_control |= OHCI_CONTROL_INIT | OHCI_CTRL_BLE | OHCI_USB_OPER;
2457 retval = ftdi_write_pcimem(ftdi, control, hc_control);
2458 if (retval)
2459 return retval;
2460 retval = ftdi_write_pcimem(ftdi, cmdstatus, OHCI_BLF);
2461 if (retval)
2462 return retval;
2463 retval = ftdi_read_pcimem(ftdi, cmdstatus, &cmdstatus);
2464 if (retval)
2465 return retval;
2466 retval = ftdi_read_pcimem(ftdi, control, &control);
2467 if (retval)
2468 return retval;
2469 retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_DRWE);
2470 if (retval)
2471 return retval;
2472 retval = ftdi_write_pcimem(ftdi, intrstatus, mask);
2473 if (retval)
2474 return retval;
2475 retval = ftdi_write_pcimem(ftdi, intrdisable,
2476 OHCI_INTR_MIE | OHCI_INTR_OC | OHCI_INTR_RHSC | OHCI_INTR_FNO |
2477 OHCI_INTR_UE | OHCI_INTR_RD | OHCI_INTR_SF | OHCI_INTR_WDH |
2478 OHCI_INTR_SO);
2479 if (retval)
2480 return retval; /* handle root hub init quirks ... */
2481 retval = ftdi_read_pcimem(ftdi, roothub.a, &roothub_a);
2482 if (retval)
2483 return retval;
2484 roothub_a &= ~(RH_A_PSM | RH_A_OCPM);
2485 if (quirk & OHCI_QUIRK_SUPERIO) {
2486 roothub_a |= RH_A_NOCP;
2487 roothub_a &= ~(RH_A_POTPGT | RH_A_NPS);
2488 retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a);
2489 if (retval)
2490 return retval;
2491 } else if ((quirk & OHCI_QUIRK_AMD756) || distrust_firmware) {
2492 roothub_a |= RH_A_NPS;
2493 retval = ftdi_write_pcimem(ftdi, roothub.a, roothub_a);
2494 if (retval)
2495 return retval;
2496 }
2497 retval = ftdi_write_pcimem(ftdi, roothub.status, RH_HS_LPSC);
2498 if (retval)
2499 return retval;
2500 retval = ftdi_write_pcimem(ftdi, roothub.b,
2501 (roothub_a & RH_A_NPS) ? 0 : RH_B_PPCM);
2502 if (retval)
2503 return retval;
2504 retval = ftdi_read_pcimem(ftdi, control, &control);
2505 if (retval)
2506 return retval;
2507 mdelay((roothub_a >> 23) & 0x1fe);
2508 for (temp = 0; temp < num_ports; temp++) {
2509 u32 portstatus;
2510 retval = ftdi_read_pcimem(ftdi, roothub.portstatus[temp],
2511 &portstatus);
2512 if (retval)
2513 return retval;
2514 if (1 & portstatus)
2515 devices += 1;
2516 }
2517 return devices;
2518 }
2519
2520 static int ftdi_elan_setup_controller(struct usb_ftdi *ftdi, int fn)
2521 {
2522 u32 latence_timer;
2523 int UxxxStatus;
2524 u32 pcidata;
2525 int reg = 0;
2526 int activePCIfn = fn << 8;
2527 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800);
2528 if (UxxxStatus)
2529 return UxxxStatus;
2530 reg = 16;
2531 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
2532 0xFFFFFFFF);
2533 if (UxxxStatus)
2534 return UxxxStatus;
2535 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2536 &pcidata);
2537 if (UxxxStatus)
2538 return UxxxStatus;
2539 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
2540 0xF0000000);
2541 if (UxxxStatus)
2542 return UxxxStatus;
2543 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2544 &pcidata);
2545 if (UxxxStatus)
2546 return UxxxStatus;
2547 reg = 12;
2548 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2549 &latence_timer);
2550 if (UxxxStatus)
2551 return UxxxStatus;
2552 latence_timer &= 0xFFFF00FF;
2553 latence_timer |= 0x00001600;
2554 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
2555 latence_timer);
2556 if (UxxxStatus)
2557 return UxxxStatus;
2558 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2559 &pcidata);
2560 if (UxxxStatus)
2561 return UxxxStatus;
2562 reg = 4;
2563 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
2564 0x06);
2565 if (UxxxStatus)
2566 return UxxxStatus;
2567 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2568 &pcidata);
2569 if (UxxxStatus)
2570 return UxxxStatus;
2571 for (reg = 0; reg <= 0x54; reg += 4) {
2572 UxxxStatus = ftdi_elan_read_pcimem(ftdi, reg, 0, &pcidata);
2573 if (UxxxStatus)
2574 return UxxxStatus;
2575 }
2576 return 0;
2577 }
2578
2579 static int ftdi_elan_close_controller(struct usb_ftdi *ftdi, int fn)
2580 {
2581 u32 latence_timer;
2582 int UxxxStatus;
2583 u32 pcidata;
2584 int reg = 0;
2585 int activePCIfn = fn << 8;
2586 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x2800);
2587 if (UxxxStatus)
2588 return UxxxStatus;
2589 reg = 16;
2590 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
2591 0xFFFFFFFF);
2592 if (UxxxStatus)
2593 return UxxxStatus;
2594 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2595 &pcidata);
2596 if (UxxxStatus)
2597 return UxxxStatus;
2598 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0,
2599 0x00000000);
2600 if (UxxxStatus)
2601 return UxxxStatus;
2602 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2603 &pcidata);
2604 if (UxxxStatus)
2605 return UxxxStatus;
2606 reg = 12;
2607 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2608 &latence_timer);
2609 if (UxxxStatus)
2610 return UxxxStatus;
2611 latence_timer &= 0xFFFF00FF;
2612 latence_timer |= 0x00001600;
2613 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
2614 latence_timer);
2615 if (UxxxStatus)
2616 return UxxxStatus;
2617 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2618 &pcidata);
2619 if (UxxxStatus)
2620 return UxxxStatus;
2621 reg = 4;
2622 UxxxStatus = ftdi_elan_write_config(ftdi, activePCIfn | reg, 0x00,
2623 0x00);
2624 if (UxxxStatus)
2625 return UxxxStatus;
2626 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2627 &pcidata);
2628 if (UxxxStatus)
2629 return UxxxStatus;
2630 return 0;
2631 }
2632
2633 static int ftdi_elan_found_controller(struct usb_ftdi *ftdi, int fn, int quirk)
2634 {
2635 int result;
2636 int UxxxStatus;
2637 UxxxStatus = ftdi_elan_setup_controller(ftdi, fn);
2638 if (UxxxStatus)
2639 return UxxxStatus;
2640 result = ftdi_elan_check_controller(ftdi, quirk);
2641 UxxxStatus = ftdi_elan_close_controller(ftdi, fn);
2642 if (UxxxStatus)
2643 return UxxxStatus;
2644 return result;
2645 }
2646
2647 static int ftdi_elan_enumeratePCI(struct usb_ftdi *ftdi)
2648 {
2649 u32 controlreg;
2650 u8 sensebits;
2651 int UxxxStatus;
2652 UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
2653 if (UxxxStatus)
2654 return UxxxStatus;
2655 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000000L);
2656 if (UxxxStatus)
2657 return UxxxStatus;
2658 msleep(750);
2659 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x100);
2660 if (UxxxStatus)
2661 return UxxxStatus;
2662 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x00000200L | 0x500);
2663 if (UxxxStatus)
2664 return UxxxStatus;
2665 UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
2666 if (UxxxStatus)
2667 return UxxxStatus;
2668 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020CL | 0x000);
2669 if (UxxxStatus)
2670 return UxxxStatus;
2671 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020DL | 0x000);
2672 if (UxxxStatus)
2673 return UxxxStatus;
2674 msleep(250);
2675 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000020FL | 0x000);
2676 if (UxxxStatus)
2677 return UxxxStatus;
2678 UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
2679 if (UxxxStatus)
2680 return UxxxStatus;
2681 UxxxStatus = ftdi_elan_write_reg(ftdi, 0x0000025FL | 0x800);
2682 if (UxxxStatus)
2683 return UxxxStatus;
2684 UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
2685 if (UxxxStatus)
2686 return UxxxStatus;
2687 UxxxStatus = ftdi_elan_read_reg(ftdi, &controlreg);
2688 if (UxxxStatus)
2689 return UxxxStatus;
2690 msleep(1000);
2691 sensebits = (controlreg >> 16) & 0x000F;
2692 if (0x0D == sensebits)
2693 return 0;
2694 else
2695 return - ENXIO;
2696 }
2697
2698 static int ftdi_elan_setupOHCI(struct usb_ftdi *ftdi)
2699 {
2700 int UxxxStatus;
2701 u32 pcidata;
2702 int reg = 0;
2703 u8 fn;
2704 int activePCIfn = 0;
2705 int max_devices = 0;
2706 int controllers = 0;
2707 int unrecognized = 0;
2708 ftdi->function = 0;
2709 for (fn = 0; (fn < 4); fn++) {
2710 u32 pciVID = 0;
2711 u32 pciPID = 0;
2712 int devices = 0;
2713 activePCIfn = fn << 8;
2714 UxxxStatus = ftdi_elan_read_config(ftdi, activePCIfn | reg, 0,
2715 &pcidata);
2716 if (UxxxStatus)
2717 return UxxxStatus;
2718 pciVID = pcidata & 0xFFFF;
2719 pciPID = (pcidata >> 16) & 0xFFFF;
2720 if ((pciVID == PCI_VENDOR_ID_OPTI) && (pciPID == 0xc861)) {
2721 devices = ftdi_elan_found_controller(ftdi, fn, 0);
2722 controllers += 1;
2723 } else if ((pciVID == PCI_VENDOR_ID_NEC) && (pciPID == 0x0035))
2724 {
2725 devices = ftdi_elan_found_controller(ftdi, fn, 0);
2726 controllers += 1;
2727 } else if ((pciVID == PCI_VENDOR_ID_AL) && (pciPID == 0x5237)) {
2728 devices = ftdi_elan_found_controller(ftdi, fn, 0);
2729 controllers += 1;
2730 } else if ((pciVID == PCI_VENDOR_ID_ATT) && (pciPID == 0x5802))
2731 {
2732 devices = ftdi_elan_found_controller(ftdi, fn, 0);
2733 controllers += 1;
2734 } else if (pciVID == PCI_VENDOR_ID_AMD && pciPID == 0x740c) {
2735 devices = ftdi_elan_found_controller(ftdi, fn,
2736 OHCI_QUIRK_AMD756);
2737 controllers += 1;
2738 } else if (pciVID == PCI_VENDOR_ID_COMPAQ && pciPID == 0xa0f8) {
2739 devices = ftdi_elan_found_controller(ftdi, fn,
2740 OHCI_QUIRK_ZFMICRO);
2741 controllers += 1;
2742 } else if (0 == pcidata) {
2743 } else
2744 unrecognized += 1;
2745 if (devices > max_devices) {
2746 max_devices = devices;
2747 ftdi->function = fn + 1;
2748 ftdi->platform_data.vendor = pciVID;
2749 ftdi->platform_data.device = pciPID;
2750 }
2751 }
2752 if (ftdi->function > 0) {
2753 UxxxStatus = ftdi_elan_setup_controller(ftdi,
2754 ftdi->function - 1);
2755 if (UxxxStatus)
2756 return UxxxStatus;
2757 return 0;
2758 } else if (controllers > 0) {
2759 return -ENXIO;
2760 } else if (unrecognized > 0) {
2761 return -ENXIO;
2762 } else {
2763 ftdi->enumerated = 0;
2764 return -ENXIO;
2765 }
2766 }
2767
2768
2769 /*
2770 * we use only the first bulk-in and bulk-out endpoints
2771 */
2772 static int ftdi_elan_probe(struct usb_interface *interface,
2773 const struct usb_device_id *id)
2774 {
2775 struct usb_host_interface *iface_desc;
2776 struct usb_endpoint_descriptor *endpoint;
2777 size_t buffer_size;
2778 int i;
2779 int retval = -ENOMEM;
2780 struct usb_ftdi *ftdi;
2781
2782 ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL);
2783 if (!ftdi) {
2784 printk(KERN_ERR "Out of memory\n");
2785 return -ENOMEM;
2786 }
2787
2788 mutex_lock(&ftdi_module_lock);
2789 list_add_tail(&ftdi->ftdi_list, &ftdi_static_list);
2790 ftdi->sequence_num = ++ftdi_instances;
2791 mutex_unlock(&ftdi_module_lock);
2792 ftdi_elan_init_kref(ftdi);
2793 init_MUTEX(&ftdi->sw_lock);
2794 ftdi->udev = usb_get_dev(interface_to_usbdev(interface));
2795 ftdi->interface = interface;
2796 mutex_init(&ftdi->u132_lock);
2797 ftdi->expected = 4;
2798 iface_desc = interface->cur_altsetting;
2799 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2800 endpoint = &iface_desc->endpoint[i].desc;
2801 if (!ftdi->bulk_in_endpointAddr &&
2802 usb_endpoint_is_bulk_in(endpoint)) {
2803 buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
2804 ftdi->bulk_in_size = buffer_size;
2805 ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress;
2806 ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL);
2807 if (!ftdi->bulk_in_buffer) {
2808 dev_err(&ftdi->udev->dev, "Could not allocate b"
2809 "ulk_in_buffer\n");
2810 retval = -ENOMEM;
2811 goto error;
2812 }
2813 }
2814 if (!ftdi->bulk_out_endpointAddr &&
2815 usb_endpoint_is_bulk_out(endpoint)) {
2816 ftdi->bulk_out_endpointAddr =
2817 endpoint->bEndpointAddress;
2818 }
2819 }
2820 if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) {
2821 dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk"
2822 "-out endpoints\n");
2823 retval = -ENODEV;
2824 goto error;
2825 }
2826 dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n",
2827 iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr,
2828 ftdi->bulk_out_endpointAddr);
2829 usb_set_intfdata(interface, ftdi);
2830 if (iface_desc->desc.bInterfaceNumber == 0 &&
2831 ftdi->bulk_in_endpointAddr == 0x81 &&
2832 ftdi->bulk_out_endpointAddr == 0x02) {
2833 retval = usb_register_dev(interface, &ftdi_elan_jtag_class);
2834 if (retval) {
2835 dev_err(&ftdi->udev->dev, "Not able to get a minor for "
2836 "this device.\n");
2837 usb_set_intfdata(interface, NULL);
2838 retval = -ENOMEM;
2839 goto error;
2840 } else {
2841 ftdi->class = &ftdi_elan_jtag_class;
2842 dev_info(&ftdi->udev->dev, "USB FDTI=%p JTAG interface "
2843 "%d now attached to ftdi%d\n", ftdi,
2844 iface_desc->desc.bInterfaceNumber,
2845 interface->minor);
2846 return 0;
2847 }
2848 } else if (iface_desc->desc.bInterfaceNumber == 1 &&
2849 ftdi->bulk_in_endpointAddr == 0x83 &&
2850 ftdi->bulk_out_endpointAddr == 0x04) {
2851 ftdi->class = NULL;
2852 dev_info(&ftdi->udev->dev, "USB FDTI=%p ELAN interface %d now a"
2853 "ctivated\n", ftdi, iface_desc->desc.bInterfaceNumber);
2854 INIT_DELAYED_WORK(&ftdi->status_work, ftdi_elan_status_work);
2855 INIT_DELAYED_WORK(&ftdi->command_work, ftdi_elan_command_work);
2856 INIT_DELAYED_WORK(&ftdi->respond_work, ftdi_elan_respond_work);
2857 ftdi_status_queue_work(ftdi, msecs_to_jiffies(3 *1000));
2858 return 0;
2859 } else {
2860 dev_err(&ftdi->udev->dev,
2861 "Could not find ELAN's U132 device\n");
2862 retval = -ENODEV;
2863 goto error;
2864 }
2865 error:if (ftdi) {
2866 ftdi_elan_put_kref(ftdi);
2867 }
2868 return retval;
2869 }
2870
2871 static void ftdi_elan_disconnect(struct usb_interface *interface)
2872 {
2873 struct usb_ftdi *ftdi = usb_get_intfdata(interface);
2874 ftdi->disconnected += 1;
2875 if (ftdi->class) {
2876 int minor = interface->minor;
2877 struct usb_class_driver *class = ftdi->class;
2878 usb_set_intfdata(interface, NULL);
2879 usb_deregister_dev(interface, class);
2880 dev_info(&ftdi->udev->dev, "USB FTDI U132 jtag interface on min"
2881 "or %d now disconnected\n", minor);
2882 } else {
2883 ftdi_status_cancel_work(ftdi);
2884 ftdi_command_cancel_work(ftdi);
2885 ftdi_response_cancel_work(ftdi);
2886 ftdi_elan_abandon_completions(ftdi);
2887 ftdi_elan_abandon_targets(ftdi);
2888 if (ftdi->registered) {
2889 platform_device_unregister(&ftdi->platform_dev);
2890 ftdi->synchronized = 0;
2891 ftdi->enumerated = 0;
2892 ftdi->initialized = 0;
2893 ftdi->registered = 0;
2894 }
2895 flush_workqueue(status_queue);
2896 flush_workqueue(command_queue);
2897 flush_workqueue(respond_queue);
2898 ftdi->disconnected += 1;
2899 usb_set_intfdata(interface, NULL);
2900 dev_info(&ftdi->udev->dev, "USB FTDI U132 host controller inter"
2901 "face now disconnected\n");
2902 }
2903 ftdi_elan_put_kref(ftdi);
2904 }
2905
2906 static struct usb_driver ftdi_elan_driver = {
2907 .name = "ftdi-elan",
2908 .probe = ftdi_elan_probe,
2909 .disconnect = ftdi_elan_disconnect,
2910 .id_table = ftdi_elan_table,
2911 };
2912 static int __init ftdi_elan_init(void)
2913 {
2914 int result;
2915 printk(KERN_INFO "driver %s built at %s on %s\n", ftdi_elan_driver.name,
2916 __TIME__, __DATE__);
2917 mutex_init(&ftdi_module_lock);
2918 INIT_LIST_HEAD(&ftdi_static_list);
2919 status_queue = create_singlethread_workqueue("ftdi-status-control");
2920 if (!status_queue)
2921 goto err_status_queue;
2922 command_queue = create_singlethread_workqueue("ftdi-command-engine");
2923 if (!command_queue)
2924 goto err_command_queue;
2925 respond_queue = create_singlethread_workqueue("ftdi-respond-engine");
2926 if (!respond_queue)
2927 goto err_respond_queue;
2928 result = usb_register(&ftdi_elan_driver);
2929 if (result) {
2930 destroy_workqueue(status_queue);
2931 destroy_workqueue(command_queue);
2932 destroy_workqueue(respond_queue);
2933 printk(KERN_ERR "usb_register failed. Error number %d\n",
2934 result);
2935 }
2936 return result;
2937
2938 err_respond_queue:
2939 destroy_workqueue(command_queue);
2940 err_command_queue:
2941 destroy_workqueue(status_queue);
2942 err_status_queue:
2943 printk(KERN_ERR "%s couldn't create workqueue\n", ftdi_elan_driver.name);
2944 return -ENOMEM;
2945 }
2946
2947 static void __exit ftdi_elan_exit(void)
2948 {
2949 struct usb_ftdi *ftdi;
2950 struct usb_ftdi *temp;
2951 usb_deregister(&ftdi_elan_driver);
2952 printk(KERN_INFO "ftdi_u132 driver deregistered\n");
2953 list_for_each_entry_safe(ftdi, temp, &ftdi_static_list, ftdi_list) {
2954 ftdi_status_cancel_work(ftdi);
2955 ftdi_command_cancel_work(ftdi);
2956 ftdi_response_cancel_work(ftdi);
2957 } flush_workqueue(status_queue);
2958 destroy_workqueue(status_queue);
2959 status_queue = NULL;
2960 flush_workqueue(command_queue);
2961 destroy_workqueue(command_queue);
2962 command_queue = NULL;
2963 flush_workqueue(respond_queue);
2964 destroy_workqueue(respond_queue);
2965 respond_queue = NULL;
2966 }
2967
2968
2969 module_init(ftdi_elan_init);
2970 module_exit(ftdi_elan_exit);
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