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