2 * USB FTDI client driver for Elan Digital Systems's Uxxx adapters
4 * Copyright(C) 2006 Elan Digital Systems Limited
5 * http://www.elandigitalsystems.com
7 * Author and Maintainer - Tony Olech - Elan Digital Systems
8 * tony.olech@elandigitalsystems.com
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.
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
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.
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)
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.
38 #include <linux/kernel.h>
39 #include <linux/errno.h>
40 #include <linux/init.h>
41 #include <linux/list.h>
42 #include <linux/ioctl.h>
43 #include <linux/slab.h>
44 #include <linux/module.h>
45 #include <linux/kref.h>
46 #include <asm/uaccess.h>
47 #include <linux/usb.h>
48 #include <linux/workqueue.h>
49 #include <linux/platform_device.h>
50 MODULE_AUTHOR("Tony Olech");
51 MODULE_DESCRIPTION("FTDI ELAN driver");
52 MODULE_LICENSE("GPL");
53 #define INT_MODULE_PARM(n, v) static int n = v;module_param(n, int, 0444)
54 extern struct platform_driver u132_platform_driver
;
55 static struct workqueue_struct
*status_queue
;
56 static struct workqueue_struct
*command_queue
;
57 static struct workqueue_struct
*respond_queue
;
59 * ftdi_module_lock exists to protect access to global variables
62 static struct semaphore ftdi_module_lock
;
63 static int ftdi_instances
= 0;
64 static struct list_head ftdi_static_list
;
66 * end of the global variables protected by ftdi_module_lock
69 #define TD_DEVNOTRESP 5
70 /* Define these values to match your devices*/
71 #define USB_FTDI_ELAN_VENDOR_ID 0x0403
72 #define USB_FTDI_ELAN_PRODUCT_ID 0xd6ea
73 /* table of devices that work with this driver*/
74 static struct usb_device_id ftdi_elan_table
[] = {
75 {USB_DEVICE(USB_FTDI_ELAN_VENDOR_ID
, USB_FTDI_ELAN_PRODUCT_ID
)},
76 { /* Terminating entry */ }
79 MODULE_DEVICE_TABLE(usb
, ftdi_elan_table
);
80 /* only the jtag(firmware upgrade device) interface requires
81 * a device file and corresponding minor number, but the
82 * interface is created unconditionally - I suppose it could
83 * be configured or not according to a module parameter.
84 * But since we(now) require one interface per device,
85 * and since it unlikely that a normal installation would
86 * require more than a couple of elan-ftdi devices, 8 seems
87 * like a reasonable limit to have here, and if someone
88 * really requires more than 8 devices, then they can frig the
91 #define USB_FTDI_ELAN_MINOR_BASE 192
92 #define COMMAND_BITS 5
93 #define COMMAND_SIZE (1<<COMMAND_BITS)
94 #define COMMAND_MASK (COMMAND_SIZE-1)
104 #define RESPOND_BITS 5
105 #define RESPOND_SIZE (1<<RESPOND_BITS)
106 #define RESPOND_MASK (RESPOND_SIZE-1)
107 struct u132_respond
{
112 struct completion wait_completion
;
127 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
128 int toggle_bits
, int error_count
, int condition_code
,
129 int repeat_number
, int halted
, int skipped
, int actual
,
132 /* Structure to hold all of our device specific stuff*/
134 struct list_head ftdi_list
;
135 struct semaphore u132_lock
;
138 struct u132_command command
[COMMAND_SIZE
];
141 struct u132_respond respond
[RESPOND_SIZE
];
142 struct u132_target target
[4];
143 char device_name
[16];
144 unsigned synchronized
:1;
145 unsigned enumerated
:1;
146 unsigned registered
:1;
147 unsigned initialized
:1;
148 unsigned card_ejected
:1;
154 int status_queue_delay
;
155 struct semaphore sw_lock
;
156 struct usb_device
*udev
;
157 struct usb_interface
*interface
;
158 struct usb_class_driver
*class;
159 struct work_struct status_work
;
160 struct work_struct command_work
;
161 struct work_struct respond_work
;
162 struct u132_platform_data platform_data
;
163 struct resource resources
[0];
164 struct platform_device platform_dev
;
165 unsigned char *bulk_in_buffer
;
169 __u8 bulk_in_endpointAddr
;
170 __u8 bulk_out_endpointAddr
;
173 u8 response
[4 + 1024];
178 #define kref_to_usb_ftdi(d) container_of(d, struct usb_ftdi, kref)
179 #define platform_device_to_usb_ftdi(d) container_of(d, struct usb_ftdi, \
181 static struct usb_driver ftdi_elan_driver
;
182 static void ftdi_elan_delete(struct kref
*kref
)
184 struct usb_ftdi
*ftdi
= kref_to_usb_ftdi(kref
);
185 dev_warn(&ftdi
->udev
->dev
, "FREEING ftdi=%p\n", ftdi
);
186 usb_put_dev(ftdi
->udev
);
187 ftdi
->disconnected
+= 1;
188 down(&ftdi_module_lock
);
189 list_del_init(&ftdi
->ftdi_list
);
191 up(&ftdi_module_lock
);
192 kfree(ftdi
->bulk_in_buffer
);
193 ftdi
->bulk_in_buffer
= NULL
;
196 static void ftdi_elan_put_kref(struct usb_ftdi
*ftdi
)
198 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
201 static void ftdi_elan_get_kref(struct usb_ftdi
*ftdi
)
203 kref_get(&ftdi
->kref
);
206 static void ftdi_elan_init_kref(struct usb_ftdi
*ftdi
)
208 kref_init(&ftdi
->kref
);
211 static void ftdi_status_requeue_work(struct usb_ftdi
*ftdi
, unsigned int delta
)
214 if (queue_delayed_work(status_queue
, &ftdi
->status_work
, delta
))
216 } else if (queue_work(status_queue
, &ftdi
->status_work
))
218 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
222 static void ftdi_status_queue_work(struct usb_ftdi
*ftdi
, unsigned int delta
)
225 if (queue_delayed_work(status_queue
, &ftdi
->status_work
, delta
))
226 kref_get(&ftdi
->kref
);
227 } else if (queue_work(status_queue
, &ftdi
->status_work
))
228 kref_get(&ftdi
->kref
);
232 static void ftdi_status_cancel_work(struct usb_ftdi
*ftdi
)
234 if (cancel_delayed_work(&ftdi
->status_work
))
235 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
238 static void ftdi_command_requeue_work(struct usb_ftdi
*ftdi
, unsigned int delta
)
241 if (queue_delayed_work(command_queue
, &ftdi
->command_work
,
244 } else if (queue_work(command_queue
, &ftdi
->command_work
))
246 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
250 static void ftdi_command_queue_work(struct usb_ftdi
*ftdi
, unsigned int delta
)
253 if (queue_delayed_work(command_queue
, &ftdi
->command_work
,
255 kref_get(&ftdi
->kref
);
256 } else if (queue_work(command_queue
, &ftdi
->command_work
))
257 kref_get(&ftdi
->kref
);
261 static void ftdi_command_cancel_work(struct usb_ftdi
*ftdi
)
263 if (cancel_delayed_work(&ftdi
->command_work
))
264 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
267 static void ftdi_response_requeue_work(struct usb_ftdi
*ftdi
,
271 if (queue_delayed_work(respond_queue
, &ftdi
->respond_work
,
274 } else if (queue_work(respond_queue
, &ftdi
->respond_work
))
276 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
280 static void ftdi_respond_queue_work(struct usb_ftdi
*ftdi
, unsigned int delta
)
283 if (queue_delayed_work(respond_queue
, &ftdi
->respond_work
,
285 kref_get(&ftdi
->kref
);
286 } else if (queue_work(respond_queue
, &ftdi
->respond_work
))
287 kref_get(&ftdi
->kref
);
291 static void ftdi_response_cancel_work(struct usb_ftdi
*ftdi
)
293 if (cancel_delayed_work(&ftdi
->respond_work
))
294 kref_put(&ftdi
->kref
, ftdi_elan_delete
);
297 void ftdi_elan_gone_away(struct platform_device
*pdev
)
299 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
300 ftdi
->gone_away
+= 1;
301 ftdi_elan_put_kref(ftdi
);
305 EXPORT_SYMBOL_GPL(ftdi_elan_gone_away
);
306 void ftdi_release_platform_dev(struct device
*dev
)
311 static void ftdi_elan_do_callback(struct usb_ftdi
*ftdi
,
312 struct u132_target
*target
, u8
*buffer
, int length
);
313 static void ftdi_elan_kick_command_queue(struct usb_ftdi
*ftdi
);
314 static void ftdi_elan_kick_respond_queue(struct usb_ftdi
*ftdi
);
315 static int ftdi_elan_setupOHCI(struct usb_ftdi
*ftdi
);
316 static int ftdi_elan_checkingPCI(struct usb_ftdi
*ftdi
);
317 static int ftdi_elan_enumeratePCI(struct usb_ftdi
*ftdi
);
318 static int ftdi_elan_synchronize(struct usb_ftdi
*ftdi
);
319 static int ftdi_elan_stuck_waiting(struct usb_ftdi
*ftdi
);
320 static int ftdi_elan_command_engine(struct usb_ftdi
*ftdi
);
321 static int ftdi_elan_respond_engine(struct usb_ftdi
*ftdi
);
322 static int ftdi_elan_hcd_init(struct usb_ftdi
*ftdi
)
325 if (ftdi
->platform_dev
.dev
.parent
)
327 ftdi_elan_get_kref(ftdi
);
328 ftdi
->platform_data
.potpg
= 100;
329 ftdi
->platform_data
.reset
= NULL
;
330 ftdi
->platform_dev
.id
= ftdi
->sequence_num
;
331 ftdi
->platform_dev
.resource
= ftdi
->resources
;
332 ftdi
->platform_dev
.num_resources
= ARRAY_SIZE(ftdi
->resources
);
333 ftdi
->platform_dev
.dev
.platform_data
= &ftdi
->platform_data
;
334 ftdi
->platform_dev
.dev
.parent
= NULL
;
335 ftdi
->platform_dev
.dev
.release
= ftdi_release_platform_dev
;
336 ftdi
->platform_dev
.dev
.dma_mask
= NULL
;
337 snprintf(ftdi
->device_name
, sizeof(ftdi
->device_name
), "u132_hcd");
338 ftdi
->platform_dev
.name
= ftdi
->device_name
;
339 dev_info(&ftdi
->udev
->dev
, "requesting module '%s'\n", "u132_hcd");
340 request_module("u132_hcd");
341 dev_info(&ftdi
->udev
->dev
, "registering '%s'\n",
342 ftdi
->platform_dev
.name
);
343 result
= platform_device_register(&ftdi
->platform_dev
);
347 static void ftdi_elan_abandon_completions(struct usb_ftdi
*ftdi
)
349 down(&ftdi
->u132_lock
);
350 while (ftdi
->respond_next
> ftdi
->respond_head
) {
351 struct u132_respond
*respond
= &ftdi
->respond
[RESPOND_MASK
&
352 ftdi
->respond_head
++];
353 *respond
->result
= -ESHUTDOWN
;
355 complete(&respond
->wait_completion
);
356 } up(&ftdi
->u132_lock
);
359 static void ftdi_elan_abandon_targets(struct usb_ftdi
*ftdi
)
362 down(&ftdi
->u132_lock
);
363 while (ed_number
-- > 0) {
364 struct u132_target
*target
= &ftdi
->target
[ed_number
];
365 if (target
->active
== 1) {
366 target
->condition_code
= TD_DEVNOTRESP
;
367 up(&ftdi
->u132_lock
);
368 ftdi_elan_do_callback(ftdi
, target
, NULL
, 0);
369 down(&ftdi
->u132_lock
);
375 up(&ftdi
->u132_lock
);
378 static void ftdi_elan_flush_targets(struct usb_ftdi
*ftdi
)
381 down(&ftdi
->u132_lock
);
382 while (ed_number
-- > 0) {
383 struct u132_target
*target
= &ftdi
->target
[ed_number
];
384 target
->abandoning
= 1;
385 wait_1
:if (target
->active
== 1) {
386 int command_size
= ftdi
->command_next
-
388 if (command_size
< COMMAND_SIZE
) {
389 struct u132_command
*command
= &ftdi
->command
[
390 COMMAND_MASK
& ftdi
->command_next
];
391 command
->header
= 0x80 | (ed_number
<< 5) | 0x4;
392 command
->length
= 0x00;
393 command
->address
= 0x00;
394 command
->width
= 0x00;
395 command
->follows
= 0;
397 command
->buffer
= &command
->value
;
398 ftdi
->command_next
+= 1;
399 ftdi_elan_kick_command_queue(ftdi
);
401 up(&ftdi
->u132_lock
);
403 down(&ftdi
->u132_lock
);
407 wait_2
:if (target
->active
== 1) {
408 int command_size
= ftdi
->command_next
-
410 if (command_size
< COMMAND_SIZE
) {
411 struct u132_command
*command
= &ftdi
->command
[
412 COMMAND_MASK
& ftdi
->command_next
];
413 command
->header
= 0x90 | (ed_number
<< 5);
414 command
->length
= 0x00;
415 command
->address
= 0x00;
416 command
->width
= 0x00;
417 command
->follows
= 0;
419 command
->buffer
= &command
->value
;
420 ftdi
->command_next
+= 1;
421 ftdi_elan_kick_command_queue(ftdi
);
423 up(&ftdi
->u132_lock
);
425 down(&ftdi
->u132_lock
);
433 up(&ftdi
->u132_lock
);
436 static void ftdi_elan_cancel_targets(struct usb_ftdi
*ftdi
)
439 down(&ftdi
->u132_lock
);
440 while (ed_number
-- > 0) {
441 struct u132_target
*target
= &ftdi
->target
[ed_number
];
442 target
->abandoning
= 1;
443 wait
:if (target
->active
== 1) {
444 int command_size
= ftdi
->command_next
-
446 if (command_size
< COMMAND_SIZE
) {
447 struct u132_command
*command
= &ftdi
->command
[
448 COMMAND_MASK
& ftdi
->command_next
];
449 command
->header
= 0x80 | (ed_number
<< 5) | 0x4;
450 command
->length
= 0x00;
451 command
->address
= 0x00;
452 command
->width
= 0x00;
453 command
->follows
= 0;
455 command
->buffer
= &command
->value
;
456 ftdi
->command_next
+= 1;
457 ftdi_elan_kick_command_queue(ftdi
);
459 up(&ftdi
->u132_lock
);
461 down(&ftdi
->u132_lock
);
469 up(&ftdi
->u132_lock
);
472 static void ftdi_elan_kick_command_queue(struct usb_ftdi
*ftdi
)
474 ftdi_command_queue_work(ftdi
, 0);
478 static void ftdi_elan_command_work(void *data
)
480 struct usb_ftdi
*ftdi
= data
;
481 if (ftdi
->disconnected
> 0) {
482 ftdi_elan_put_kref(ftdi
);
485 int retval
= ftdi_elan_command_engine(ftdi
);
486 if (retval
== -ESHUTDOWN
) {
487 ftdi
->disconnected
+= 1;
488 } else if (retval
== -ENODEV
) {
489 ftdi
->disconnected
+= 1;
491 dev_err(&ftdi
->udev
->dev
, "command error %d\n", retval
);
492 ftdi_command_requeue_work(ftdi
, msecs_to_jiffies(10));
497 static void ftdi_elan_kick_respond_queue(struct usb_ftdi
*ftdi
)
499 ftdi_respond_queue_work(ftdi
, 0);
503 static void ftdi_elan_respond_work(void *data
)
505 struct usb_ftdi
*ftdi
= data
;
506 if (ftdi
->disconnected
> 0) {
507 ftdi_elan_put_kref(ftdi
);
510 int retval
= ftdi_elan_respond_engine(ftdi
);
512 } else if (retval
== -ESHUTDOWN
) {
513 ftdi
->disconnected
+= 1;
514 } else if (retval
== -ENODEV
) {
515 ftdi
->disconnected
+= 1;
516 } else if (retval
== -ENODEV
) {
517 ftdi
->disconnected
+= 1;
518 } else if (retval
== -EILSEQ
) {
519 ftdi
->disconnected
+= 1;
521 ftdi
->disconnected
+= 1;
522 dev_err(&ftdi
->udev
->dev
, "respond error %d\n", retval
);
524 if (ftdi
->disconnected
> 0) {
525 ftdi_elan_abandon_completions(ftdi
);
526 ftdi_elan_abandon_targets(ftdi
);
528 ftdi_response_requeue_work(ftdi
, msecs_to_jiffies(10));
535 * the sw_lock is initially held and will be freed
536 * after the FTDI has been synchronized
539 static void ftdi_elan_status_work(void *data
)
541 struct usb_ftdi
*ftdi
= data
;
542 int work_delay_in_msec
= 0;
543 if (ftdi
->disconnected
> 0) {
544 ftdi_elan_put_kref(ftdi
);
546 } else if (ftdi
->synchronized
== 0) {
547 down(&ftdi
->sw_lock
);
548 if (ftdi_elan_synchronize(ftdi
) == 0) {
549 ftdi
->synchronized
= 1;
550 ftdi_command_queue_work(ftdi
, 1);
551 ftdi_respond_queue_work(ftdi
, 1);
553 work_delay_in_msec
= 100;
555 dev_err(&ftdi
->udev
->dev
, "synchronize failed\n");
557 work_delay_in_msec
= 10 *1000;
559 } else if (ftdi
->stuck_status
> 0) {
560 if (ftdi_elan_stuck_waiting(ftdi
) == 0) {
561 ftdi
->stuck_status
= 0;
562 ftdi
->synchronized
= 0;
563 } else if ((ftdi
->stuck_status
++ % 60) == 1) {
564 dev_err(&ftdi
->udev
->dev
, "WRONG type of card inserted "
565 "- please remove\n");
567 dev_err(&ftdi
->udev
->dev
, "WRONG type of card inserted "
568 "- checked %d times\n", ftdi
->stuck_status
);
569 work_delay_in_msec
= 100;
570 } else if (ftdi
->enumerated
== 0) {
571 if (ftdi_elan_enumeratePCI(ftdi
) == 0) {
572 ftdi
->enumerated
= 1;
573 work_delay_in_msec
= 250;
575 work_delay_in_msec
= 1000;
576 } else if (ftdi
->initialized
== 0) {
577 if (ftdi_elan_setupOHCI(ftdi
) == 0) {
578 ftdi
->initialized
= 1;
579 work_delay_in_msec
= 500;
581 dev_err(&ftdi
->udev
->dev
, "initialized failed - trying "
582 "again in 10 seconds\n");
583 work_delay_in_msec
= 10 *1000;
585 } else if (ftdi
->registered
== 0) {
586 work_delay_in_msec
= 10;
587 if (ftdi_elan_hcd_init(ftdi
) == 0) {
588 ftdi
->registered
= 1;
590 dev_err(&ftdi
->udev
->dev
, "register failed\n");
591 work_delay_in_msec
= 250;
593 if (ftdi_elan_checkingPCI(ftdi
) == 0) {
594 work_delay_in_msec
= 250;
595 } else if (ftdi
->controlreg
& 0x00400000) {
596 if (ftdi
->gone_away
> 0) {
597 dev_err(&ftdi
->udev
->dev
, "PCI device eject con"
598 "firmed platform_dev.dev.parent=%p plat"
600 ftdi
->platform_dev
.dev
.parent
,
601 &ftdi
->platform_dev
.dev
);
602 platform_device_unregister(&ftdi
->platform_dev
);
603 ftdi
->platform_dev
.dev
.parent
= NULL
;
604 ftdi
->registered
= 0;
605 ftdi
->enumerated
= 0;
606 ftdi
->card_ejected
= 0;
607 ftdi
->initialized
= 0;
610 ftdi_elan_flush_targets(ftdi
);
611 work_delay_in_msec
= 250;
613 dev_err(&ftdi
->udev
->dev
, "PCI device has disappeared\n"
615 ftdi_elan_cancel_targets(ftdi
);
616 work_delay_in_msec
= 500;
617 ftdi
->enumerated
= 0;
618 ftdi
->initialized
= 0;
621 if (ftdi
->disconnected
> 0) {
622 ftdi_elan_put_kref(ftdi
);
625 ftdi_status_requeue_work(ftdi
,
626 msecs_to_jiffies(work_delay_in_msec
));
633 * file_operations for the jtag interface
635 * the usage count for the device is incremented on open()
636 * and decremented on release()
638 static int ftdi_elan_open(struct inode
*inode
, struct file
*file
)
640 int subminor
= iminor(inode
);
641 struct usb_interface
*interface
= usb_find_interface(&ftdi_elan_driver
,
644 printk(KERN_ERR
"can't find device for minor %d\n", subminor
);
647 struct usb_ftdi
*ftdi
= usb_get_intfdata(interface
);
651 if (down_interruptible(&ftdi
->sw_lock
)) {
654 ftdi_elan_get_kref(ftdi
);
655 file
->private_data
= ftdi
;
662 static int ftdi_elan_release(struct inode
*inode
, struct file
*file
)
664 struct usb_ftdi
*ftdi
= (struct usb_ftdi
*)file
->private_data
;
667 up(&ftdi
->sw_lock
); /* decrement the count on our device */
668 ftdi_elan_put_kref(ftdi
);
673 #define FTDI_ELAN_IOC_MAGIC 0xA1
674 #define FTDI_ELAN_IOCDEBUG _IOC(_IOC_WRITE, FTDI_ELAN_IOC_MAGIC, 1, 132)
675 static int ftdi_elan_ioctl(struct inode
*inode
, struct file
*file
,
676 unsigned int cmd
, unsigned long arg
)
679 case FTDI_ELAN_IOCDEBUG
:{
681 int size
= strncpy_from_user(line
,
682 (const char __user
*)arg
, sizeof(line
));
686 printk(KERN_ERR
"TODO: ioctl %s\n", line
);
698 * blocking bulk reads are used to get data from the device
701 static ssize_t
ftdi_elan_read(struct file
*file
, char __user
*buffer
,
702 size_t count
, loff_t
*ppos
)
704 char data
[30 *3 + 4];
706 int m
= (sizeof(data
) - 1) / 3;
708 int retry_on_empty
= 10;
709 int retry_on_timeout
= 5;
710 struct usb_ftdi
*ftdi
= (struct usb_ftdi
*)file
->private_data
;
711 if (ftdi
->disconnected
> 0) {
715 have
:if (ftdi
->bulk_in_left
> 0) {
717 char *p
= ++ftdi
->bulk_in_last
+ ftdi
->bulk_in_buffer
;
718 ftdi
->bulk_in_left
-= 1;
719 if (bytes_read
< m
) {
720 d
+= sprintf(d
, " %02X", 0x000000FF & *p
);
721 } else if (bytes_read
> m
) {
723 d
+= sprintf(d
, " ..");
724 if (copy_to_user(buffer
++, p
, 1)) {
733 more
:if (count
> 0) {
734 int packet_bytes
= 0;
735 int retval
= usb_bulk_msg(ftdi
->udev
,
736 usb_rcvbulkpipe(ftdi
->udev
, ftdi
->bulk_in_endpointAddr
),
737 ftdi
->bulk_in_buffer
, ftdi
->bulk_in_size
,
738 &packet_bytes
, msecs_to_jiffies(50));
739 if (packet_bytes
> 2) {
740 ftdi
->bulk_in_left
= packet_bytes
- 2;
741 ftdi
->bulk_in_last
= 1;
743 } else if (retval
== -ETIMEDOUT
) {
744 if (retry_on_timeout
-- > 0) {
746 } else if (bytes_read
> 0) {
750 } else if (retval
== 0) {
751 if (retry_on_empty
-- > 0) {
761 static void ftdi_elan_write_bulk_callback(struct urb
*urb
)
763 struct usb_ftdi
*ftdi
= (struct usb_ftdi
*)urb
->context
;
764 if (urb
->status
&& !(urb
->status
== -ENOENT
|| urb
->status
==
765 -ECONNRESET
|| urb
->status
== -ESHUTDOWN
)) {
766 dev_err(&ftdi
->udev
->dev
, "urb=%p write bulk status received: %"
767 "d\n", urb
, urb
->status
);
769 usb_buffer_free(urb
->dev
, urb
->transfer_buffer_length
,
770 urb
->transfer_buffer
, urb
->transfer_dma
);
773 static int fill_buffer_with_all_queued_commands(struct usb_ftdi
*ftdi
,
774 char *buf
, int command_size
, int total_size
)
778 int I
= command_size
;
779 int i
= ftdi
->command_head
;
781 struct u132_command
*command
= &ftdi
->command
[COMMAND_MASK
&
783 int F
= command
->follows
;
784 u8
*f
= command
->buffer
;
785 if (command
->header
& 0x80) {
786 ed_commands
|= 1 << (0x3 & (command
->header
>> 5));
788 buf
[b
++] = command
->header
;
789 buf
[b
++] = (command
->length
>> 0) & 0x00FF;
790 buf
[b
++] = (command
->length
>> 8) & 0x00FF;
791 buf
[b
++] = command
->address
;
792 buf
[b
++] = command
->width
;
800 static int ftdi_elan_total_command_size(struct usb_ftdi
*ftdi
, int command_size
)
803 int I
= command_size
;
804 int i
= ftdi
->command_head
;
806 struct u132_command
*command
= &ftdi
->command
[COMMAND_MASK
&
808 total_size
+= 5 + command
->follows
;
812 static int ftdi_elan_command_engine(struct usb_ftdi
*ftdi
)
819 int command_size
= ftdi
->command_next
- ftdi
->command_head
;
820 if (command_size
== 0)
822 total_size
= ftdi_elan_total_command_size(ftdi
, command_size
);
823 urb
= usb_alloc_urb(0, GFP_KERNEL
);
825 dev_err(&ftdi
->udev
->dev
, "could not get a urb to write %d comm"
826 "ands totaling %d bytes to the Uxxx\n", command_size
,
830 buf
= usb_buffer_alloc(ftdi
->udev
, total_size
, GFP_KERNEL
,
833 dev_err(&ftdi
->udev
->dev
, "could not get a buffer to write %d c"
834 "ommands totaling %d bytes to the Uxxx\n", command_size
,
839 ed_commands
= fill_buffer_with_all_queued_commands(ftdi
, buf
,
840 command_size
, total_size
);
841 usb_fill_bulk_urb(urb
, ftdi
->udev
, usb_sndbulkpipe(ftdi
->udev
,
842 ftdi
->bulk_out_endpointAddr
), buf
, total_size
,
843 ftdi_elan_write_bulk_callback
, ftdi
);
844 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
846 char diag
[40 *3 + 4];
850 int s
= (sizeof(diag
) - 1) / 3;
852 while (s
-- > 0 && m
-- > 0) {
853 if (s
> 0 || m
== 0) {
854 d
+= sprintf(d
, " %02X", *c
++);
856 d
+= sprintf(d
, " ..");
859 retval
= usb_submit_urb(urb
, GFP_KERNEL
);
861 dev_err(&ftdi
->udev
->dev
, "failed %d to submit urb %p to write "
862 "%d commands totaling %d bytes to the Uxxx\n", retval
,
863 urb
, command_size
, total_size
);
864 usb_buffer_free(ftdi
->udev
, total_size
, buf
, urb
->transfer_dma
);
868 usb_free_urb(urb
); /* release our reference to this urb,
869 the USB core will eventually free it entirely */
870 ftdi
->command_head
+= command_size
;
871 ftdi_elan_kick_respond_queue(ftdi
);
875 static void ftdi_elan_do_callback(struct usb_ftdi
*ftdi
,
876 struct u132_target
*target
, u8
*buffer
, int length
)
878 struct urb
*urb
= target
->urb
;
879 int halted
= target
->halted
;
880 int skipped
= target
->skipped
;
881 int actual
= target
->actual
;
882 int non_null
= target
->non_null
;
883 int toggle_bits
= target
->toggle_bits
;
884 int error_count
= target
->error_count
;
885 int condition_code
= target
->condition_code
;
886 int repeat_number
= target
->repeat_number
;
887 void (*callback
) (void *, struct urb
*, u8
*, int, int, int, int, int,
888 int, int, int, int) = target
->callback
;
890 target
->callback
= NULL
;
891 (*callback
) (target
->endp
, urb
, buffer
, length
, toggle_bits
,
892 error_count
, condition_code
, repeat_number
, halted
, skipped
,
896 static char *have_ed_set_response(struct usb_ftdi
*ftdi
,
897 struct u132_target
*target
, u16 ed_length
, int ed_number
, int ed_type
,
900 int payload
= (ed_length
>> 0) & 0x07FF;
901 down(&ftdi
->u132_lock
);
903 target
->non_null
= (ed_length
>> 15) & 0x0001;
904 target
->repeat_number
= (ed_length
>> 11) & 0x000F;
905 if (ed_type
== 0x02) {
906 if (payload
== 0 || target
->abandoning
> 0) {
907 target
->abandoning
= 0;
908 up(&ftdi
->u132_lock
);
909 ftdi_elan_do_callback(ftdi
, target
, 4 + ftdi
->response
,
914 return ftdi
->response
;
916 ftdi
->expected
= 4 + payload
;
918 up(&ftdi
->u132_lock
);
921 } else if (ed_type
== 0x03) {
922 if (payload
== 0 || target
->abandoning
> 0) {
923 target
->abandoning
= 0;
924 up(&ftdi
->u132_lock
);
925 ftdi_elan_do_callback(ftdi
, target
, 4 + ftdi
->response
,
930 return ftdi
->response
;
932 ftdi
->expected
= 4 + payload
;
934 up(&ftdi
->u132_lock
);
937 } else if (ed_type
== 0x01) {
938 target
->abandoning
= 0;
939 up(&ftdi
->u132_lock
);
940 ftdi_elan_do_callback(ftdi
, target
, 4 + ftdi
->response
,
945 return ftdi
->response
;
947 target
->abandoning
= 0;
948 up(&ftdi
->u132_lock
);
949 ftdi_elan_do_callback(ftdi
, target
, 4 + ftdi
->response
,
954 return ftdi
->response
;
958 static char *have_ed_get_response(struct usb_ftdi
*ftdi
,
959 struct u132_target
*target
, u16 ed_length
, int ed_number
, int ed_type
,
962 down(&ftdi
->u132_lock
);
963 target
->condition_code
= TD_DEVNOTRESP
;
964 target
->actual
= (ed_length
>> 0) & 0x01FF;
965 target
->non_null
= (ed_length
>> 15) & 0x0001;
966 target
->repeat_number
= (ed_length
>> 11) & 0x000F;
967 up(&ftdi
->u132_lock
);
969 ftdi_elan_do_callback(ftdi
, target
, NULL
, 0);
970 target
->abandoning
= 0;
974 return ftdi
->response
;
979 * The engine tries to empty the FTDI fifo
981 * all responses found in the fifo data are dispatched thus
982 * the response buffer can only ever hold a maximum sized
983 * response from the Uxxx.
986 static int ftdi_elan_respond_engine(struct usb_ftdi
*ftdi
)
988 u8
*b
= ftdi
->response
+ ftdi
->recieved
;
990 int retry_on_empty
= 1;
991 int retry_on_timeout
= 3;
992 int empty_packets
= 0;
994 int packet_bytes
= 0;
995 int retval
= usb_bulk_msg(ftdi
->udev
,
996 usb_rcvbulkpipe(ftdi
->udev
, ftdi
->bulk_in_endpointAddr
),
997 ftdi
->bulk_in_buffer
, ftdi
->bulk_in_size
,
998 &packet_bytes
, msecs_to_jiffies(500));
999 char diag
[30 *3 + 4];
1001 int m
= packet_bytes
;
1002 u8
*c
= ftdi
->bulk_in_buffer
;
1003 int s
= (sizeof(diag
) - 1) / 3;
1005 while (s
-- > 0 && m
-- > 0) {
1006 if (s
> 0 || m
== 0) {
1007 d
+= sprintf(d
, " %02X", *c
++);
1009 d
+= sprintf(d
, " ..");
1011 if (packet_bytes
> 2) {
1012 ftdi
->bulk_in_left
= packet_bytes
- 2;
1013 ftdi
->bulk_in_last
= 1;
1015 } else if (retval
== -ETIMEDOUT
) {
1016 if (retry_on_timeout
-- > 0) {
1017 dev_err(&ftdi
->udev
->dev
, "TIMED OUT with packe"
1018 "t_bytes = %d with total %d bytes%s\n",
1019 packet_bytes
, bytes_read
, diag
);
1021 } else if (bytes_read
> 0) {
1022 dev_err(&ftdi
->udev
->dev
, "ONLY %d bytes%s\n",
1026 dev_err(&ftdi
->udev
->dev
, "TIMED OUT with packe"
1027 "t_bytes = %d with total %d bytes%s\n",
1028 packet_bytes
, bytes_read
, diag
);
1031 } else if (retval
== -EILSEQ
) {
1032 dev_err(&ftdi
->udev
->dev
, "error = %d with packet_bytes"
1033 " = %d with total %d bytes%s\n", retval
,
1034 packet_bytes
, bytes_read
, diag
);
1036 } else if (retval
) {
1037 dev_err(&ftdi
->udev
->dev
, "error = %d with packet_bytes"
1038 " = %d with total %d bytes%s\n", retval
,
1039 packet_bytes
, bytes_read
, diag
);
1041 } else if (packet_bytes
== 2) {
1042 unsigned char s0
= ftdi
->bulk_in_buffer
[0];
1043 unsigned char s1
= ftdi
->bulk_in_buffer
[1];
1045 if (s0
== 0x31 && s1
== 0x60) {
1046 if (retry_on_empty
-- > 0) {
1050 } else if (s0
== 0x31 && s1
== 0x00) {
1051 if (retry_on_empty
-- > 0) {
1056 if (retry_on_empty
-- > 0) {
1061 } else if (packet_bytes
== 1) {
1062 if (retry_on_empty
-- > 0) {
1067 if (retry_on_empty
-- > 0) {
1076 have
:if (ftdi
->bulk_in_left
> 0) {
1077 u8 c
= ftdi
->bulk_in_buffer
[++ftdi
->bulk_in_last
];
1079 ftdi
->bulk_in_left
-= 1;
1080 if (ftdi
->recieved
== 0 && c
== 0xFF) {
1084 if (++ftdi
->recieved
< ftdi
->expected
) {
1086 } else if (ftdi
->ed_found
) {
1087 int ed_number
= (ftdi
->response
[0] >> 5) & 0x03;
1088 u16 ed_length
= (ftdi
->response
[2] << 8) |
1090 struct u132_target
*target
= &ftdi
->target
[ed_number
];
1091 int payload
= (ed_length
>> 0) & 0x07FF;
1092 char diag
[30 *3 + 4];
1095 u8
*c
= 4 + ftdi
->response
;
1096 int s
= (sizeof(diag
) - 1) / 3;
1098 while (s
-- > 0 && m
-- > 0) {
1099 if (s
> 0 || m
== 0) {
1100 d
+= sprintf(d
, " %02X", *c
++);
1102 d
+= sprintf(d
, " ..");
1104 ftdi_elan_do_callback(ftdi
, target
, 4 + ftdi
->response
,
1111 } else if (ftdi
->expected
== 8) {
1113 int respond_head
= ftdi
->respond_head
++;
1114 struct u132_respond
*respond
= &ftdi
->respond
[
1115 RESPOND_MASK
& respond_head
];
1116 u32 data
= ftdi
->response
[7];
1118 data
|= ftdi
->response
[6];
1120 data
|= ftdi
->response
[5];
1122 data
|= ftdi
->response
[4];
1123 *respond
->value
= data
;
1124 *respond
->result
= 0;
1125 complete(&respond
->wait_completion
);
1130 buscmd
= (ftdi
->response
[0] >> 0) & 0x0F;
1131 if (buscmd
== 0x00) {
1132 } else if (buscmd
== 0x02) {
1133 } else if (buscmd
== 0x06) {
1134 } else if (buscmd
== 0x0A) {
1136 dev_err(&ftdi
->udev
->dev
, "Uxxx unknown(%0X) va"
1137 "lue = %08X\n", buscmd
, data
);
1140 if ((ftdi
->response
[0] & 0x80) == 0x00) {
1144 int ed_number
= (ftdi
->response
[0] >> 5) & 0x03;
1145 int ed_type
= (ftdi
->response
[0] >> 0) & 0x03;
1146 u16 ed_length
= (ftdi
->response
[2] << 8) |
1148 struct u132_target
*target
= &ftdi
->target
[
1150 target
->halted
= (ftdi
->response
[0] >> 3) &
1152 target
->skipped
= (ftdi
->response
[0] >> 2) &
1154 target
->toggle_bits
= (ftdi
->response
[3] >> 6)
1156 target
->error_count
= (ftdi
->response
[3] >> 4)
1158 target
->condition_code
= (ftdi
->response
[
1160 if ((ftdi
->response
[0] & 0x10) == 0x00) {
1161 b
= have_ed_set_response(ftdi
, target
,
1162 ed_length
, ed_number
, ed_type
,
1166 b
= have_ed_get_response(ftdi
, target
,
1167 ed_length
, ed_number
, ed_type
,
1179 * create a urb, and a buffer for it, and copy the data to the urb
1182 static ssize_t
ftdi_elan_write(struct file
*file
,
1183 const char __user
*user_buffer
, size_t count
,
1189 char data
[30 *3 + 4];
1191 const char __user
*s
= user_buffer
;
1192 int m
= (sizeof(data
) - 1) / 3;
1193 struct usb_ftdi
*ftdi
= (struct usb_ftdi
*)file
->private_data
;
1194 if (ftdi
->disconnected
> 0) {
1200 urb
= usb_alloc_urb(0, GFP_KERNEL
);
1205 buf
= usb_buffer_alloc(ftdi
->udev
, count
, GFP_KERNEL
,
1206 &urb
->transfer_dma
);
1211 if (copy_from_user(buf
, user_buffer
, count
)) {
1215 usb_fill_bulk_urb(urb
, ftdi
->udev
, usb_sndbulkpipe(ftdi
->udev
,
1216 ftdi
->bulk_out_endpointAddr
), buf
, count
,
1217 ftdi_elan_write_bulk_callback
, ftdi
);
1218 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
1219 retval
= usb_submit_urb(urb
, GFP_KERNEL
);
1221 dev_err(&ftdi
->udev
->dev
, "failed submitting write urb, error %"
1230 d
+= sprintf(d
, " %02X", 0x000000FF & *s
++);
1232 d
+= sprintf(d
, " ..");
1236 d
+= sprintf(d
, " %02X", 0x000000FF & *s
++);
1240 error_4
: error_3
:usb_buffer_free(ftdi
->udev
, count
, buf
,
1242 error_2
:usb_free_urb(urb
);
1243 error_1
:return retval
;
1246 static struct file_operations ftdi_elan_fops
= {
1247 .owner
= THIS_MODULE
,
1248 .llseek
= no_llseek
,
1249 .ioctl
= ftdi_elan_ioctl
,
1250 .read
= ftdi_elan_read
,
1251 .write
= ftdi_elan_write
,
1252 .open
= ftdi_elan_open
,
1253 .release
= ftdi_elan_release
,
1257 * usb class driver info in order to get a minor number from the usb core,
1258 * and to have the device registered with the driver core
1260 static struct usb_class_driver ftdi_elan_jtag_class
= {
1261 .name
= "ftdi-%d-jtag",
1262 .fops
= &ftdi_elan_fops
,
1263 .minor_base
= USB_FTDI_ELAN_MINOR_BASE
,
1267 * the following definitions are for the
1268 * ELAN FPGA state machgine processor that
1269 * lies on the other side of the FTDI chip
1271 #define cPCIu132rd 0x0
1272 #define cPCIu132wr 0x1
1273 #define cPCIiord 0x2
1274 #define cPCIiowr 0x3
1275 #define cPCImemrd 0x6
1276 #define cPCImemwr 0x7
1277 #define cPCIcfgrd 0xA
1278 #define cPCIcfgwr 0xB
1279 #define cPCInull 0xF
1280 #define cU132cmd_status 0x0
1281 #define cU132flash 0x1
1282 #define cPIDsetup 0x0
1285 #define cPIDinonce 0x3
1286 #define cCCnoerror 0x0
1288 #define cCCbitstuff 0x2
1289 #define cCCtoggle 0x3
1290 #define cCCstall 0x4
1291 #define cCCnoresp 0x5
1292 #define cCCbadpid1 0x6
1293 #define cCCbadpid2 0x7
1294 #define cCCdataoverrun 0x8
1295 #define cCCdataunderrun 0x9
1296 #define cCCbuffoverrun 0xC
1297 #define cCCbuffunderrun 0xD
1298 #define cCCnotaccessed 0xF
1299 static int ftdi_elan_write_reg(struct usb_ftdi
*ftdi
, u32 data
)
1301 wait
:if (ftdi
->disconnected
> 0) {
1305 down(&ftdi
->u132_lock
);
1306 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1307 if (command_size
< COMMAND_SIZE
) {
1308 struct u132_command
*command
= &ftdi
->command
[
1309 COMMAND_MASK
& ftdi
->command_next
];
1310 command
->header
= 0x00 | cPCIu132wr
;
1311 command
->length
= 0x04;
1312 command
->address
= 0x00;
1313 command
->width
= 0x00;
1314 command
->follows
= 4;
1315 command
->value
= data
;
1316 command
->buffer
= &command
->value
;
1317 ftdi
->command_next
+= 1;
1318 ftdi_elan_kick_command_queue(ftdi
);
1319 up(&ftdi
->u132_lock
);
1322 up(&ftdi
->u132_lock
);
1329 static int ftdi_elan_write_config(struct usb_ftdi
*ftdi
, int config_offset
,
1332 u8 addressofs
= config_offset
/ 4;
1333 wait
:if (ftdi
->disconnected
> 0) {
1337 down(&ftdi
->u132_lock
);
1338 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1339 if (command_size
< COMMAND_SIZE
) {
1340 struct u132_command
*command
= &ftdi
->command
[
1341 COMMAND_MASK
& ftdi
->command_next
];
1342 command
->header
= 0x00 | (cPCIcfgwr
& 0x0F);
1343 command
->length
= 0x04;
1344 command
->address
= addressofs
;
1345 command
->width
= 0x00 | (width
& 0x0F);
1346 command
->follows
= 4;
1347 command
->value
= data
;
1348 command
->buffer
= &command
->value
;
1349 ftdi
->command_next
+= 1;
1350 ftdi_elan_kick_command_queue(ftdi
);
1351 up(&ftdi
->u132_lock
);
1354 up(&ftdi
->u132_lock
);
1361 static int ftdi_elan_write_pcimem(struct usb_ftdi
*ftdi
, int mem_offset
,
1364 u8 addressofs
= mem_offset
/ 4;
1365 wait
:if (ftdi
->disconnected
> 0) {
1369 down(&ftdi
->u132_lock
);
1370 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1371 if (command_size
< COMMAND_SIZE
) {
1372 struct u132_command
*command
= &ftdi
->command
[
1373 COMMAND_MASK
& ftdi
->command_next
];
1374 command
->header
= 0x00 | (cPCImemwr
& 0x0F);
1375 command
->length
= 0x04;
1376 command
->address
= addressofs
;
1377 command
->width
= 0x00 | (width
& 0x0F);
1378 command
->follows
= 4;
1379 command
->value
= data
;
1380 command
->buffer
= &command
->value
;
1381 ftdi
->command_next
+= 1;
1382 ftdi_elan_kick_command_queue(ftdi
);
1383 up(&ftdi
->u132_lock
);
1386 up(&ftdi
->u132_lock
);
1393 int usb_ftdi_elan_write_pcimem(struct platform_device
*pdev
, int mem_offset
,
1396 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1397 return ftdi_elan_write_pcimem(ftdi
, mem_offset
, width
, data
);
1401 EXPORT_SYMBOL_GPL(usb_ftdi_elan_write_pcimem
);
1402 static int ftdi_elan_read_reg(struct usb_ftdi
*ftdi
, u32
*data
)
1404 wait
:if (ftdi
->disconnected
> 0) {
1409 down(&ftdi
->u132_lock
);
1410 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1411 respond_size
= ftdi
->respond_next
- ftdi
->respond_head
;
1412 if (command_size
< COMMAND_SIZE
&& respond_size
< RESPOND_SIZE
)
1414 struct u132_command
*command
= &ftdi
->command
[
1415 COMMAND_MASK
& ftdi
->command_next
];
1416 struct u132_respond
*respond
= &ftdi
->respond
[
1417 RESPOND_MASK
& ftdi
->respond_next
];
1418 int result
= -ENODEV
;
1419 respond
->result
= &result
;
1420 respond
->header
= command
->header
= 0x00 | cPCIu132rd
;
1421 command
->length
= 0x04;
1422 respond
->address
= command
->address
= cU132cmd_status
;
1423 command
->width
= 0x00;
1424 command
->follows
= 0;
1426 command
->buffer
= NULL
;
1427 respond
->value
= data
;
1428 init_completion(&respond
->wait_completion
);
1429 ftdi
->command_next
+= 1;
1430 ftdi
->respond_next
+= 1;
1431 ftdi_elan_kick_command_queue(ftdi
);
1432 up(&ftdi
->u132_lock
);
1433 wait_for_completion(&respond
->wait_completion
);
1436 up(&ftdi
->u132_lock
);
1443 int usb_ftdi_elan_read_reg(struct platform_device
*pdev
, u32
*data
)
1445 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1446 return ftdi_elan_read_reg(ftdi
, data
);
1450 EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_reg
);
1451 static int ftdi_elan_read_config(struct usb_ftdi
*ftdi
, int config_offset
,
1452 u8 width
, u32
*data
)
1454 u8 addressofs
= config_offset
/ 4;
1455 wait
:if (ftdi
->disconnected
> 0) {
1460 down(&ftdi
->u132_lock
);
1461 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1462 respond_size
= ftdi
->respond_next
- ftdi
->respond_head
;
1463 if (command_size
< COMMAND_SIZE
&& respond_size
< RESPOND_SIZE
)
1465 struct u132_command
*command
= &ftdi
->command
[
1466 COMMAND_MASK
& ftdi
->command_next
];
1467 struct u132_respond
*respond
= &ftdi
->respond
[
1468 RESPOND_MASK
& ftdi
->respond_next
];
1469 int result
= -ENODEV
;
1470 respond
->result
= &result
;
1471 respond
->header
= command
->header
= 0x00 | (cPCIcfgrd
&
1473 command
->length
= 0x04;
1474 respond
->address
= command
->address
= addressofs
;
1475 command
->width
= 0x00 | (width
& 0x0F);
1476 command
->follows
= 0;
1478 command
->buffer
= NULL
;
1479 respond
->value
= data
;
1480 init_completion(&respond
->wait_completion
);
1481 ftdi
->command_next
+= 1;
1482 ftdi
->respond_next
+= 1;
1483 ftdi_elan_kick_command_queue(ftdi
);
1484 up(&ftdi
->u132_lock
);
1485 wait_for_completion(&respond
->wait_completion
);
1488 up(&ftdi
->u132_lock
);
1495 static int ftdi_elan_read_pcimem(struct usb_ftdi
*ftdi
, int mem_offset
,
1496 u8 width
, u32
*data
)
1498 u8 addressofs
= mem_offset
/ 4;
1499 wait
:if (ftdi
->disconnected
> 0) {
1504 down(&ftdi
->u132_lock
);
1505 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1506 respond_size
= ftdi
->respond_next
- ftdi
->respond_head
;
1507 if (command_size
< COMMAND_SIZE
&& respond_size
< RESPOND_SIZE
)
1509 struct u132_command
*command
= &ftdi
->command
[
1510 COMMAND_MASK
& ftdi
->command_next
];
1511 struct u132_respond
*respond
= &ftdi
->respond
[
1512 RESPOND_MASK
& ftdi
->respond_next
];
1513 int result
= -ENODEV
;
1514 respond
->result
= &result
;
1515 respond
->header
= command
->header
= 0x00 | (cPCImemrd
&
1517 command
->length
= 0x04;
1518 respond
->address
= command
->address
= addressofs
;
1519 command
->width
= 0x00 | (width
& 0x0F);
1520 command
->follows
= 0;
1522 command
->buffer
= NULL
;
1523 respond
->value
= data
;
1524 init_completion(&respond
->wait_completion
);
1525 ftdi
->command_next
+= 1;
1526 ftdi
->respond_next
+= 1;
1527 ftdi_elan_kick_command_queue(ftdi
);
1528 up(&ftdi
->u132_lock
);
1529 wait_for_completion(&respond
->wait_completion
);
1532 up(&ftdi
->u132_lock
);
1539 int usb_ftdi_elan_read_pcimem(struct platform_device
*pdev
, int mem_offset
,
1540 u8 width
, u32
*data
)
1542 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1543 if (ftdi
->initialized
== 0) {
1546 return ftdi_elan_read_pcimem(ftdi
, mem_offset
, width
, data
);
1550 EXPORT_SYMBOL_GPL(usb_ftdi_elan_read_pcimem
);
1551 static int ftdi_elan_edset_setup(struct usb_ftdi
*ftdi
, u8 ed_number
,
1552 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1553 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1554 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1555 int halted
, int skipped
, int actual
, int non_null
))
1557 u8 ed
= ed_number
- 1;
1558 wait
:if (ftdi
->disconnected
> 0) {
1560 } else if (ftdi
->initialized
== 0) {
1564 down(&ftdi
->u132_lock
);
1565 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1566 if (command_size
< COMMAND_SIZE
) {
1567 struct u132_target
*target
= &ftdi
->target
[ed
];
1568 struct u132_command
*command
= &ftdi
->command
[
1569 COMMAND_MASK
& ftdi
->command_next
];
1570 command
->header
= 0x80 | (ed
<< 5);
1571 command
->length
= 0x8007;
1572 command
->address
= (toggle_bits
<< 6) | (ep_number
<< 2)
1574 command
->width
= usb_maxpacket(urb
->dev
, urb
->pipe
,
1575 usb_pipeout(urb
->pipe
));
1576 command
->follows
= 8;
1578 command
->buffer
= urb
->setup_packet
;
1579 target
->callback
= callback
;
1580 target
->endp
= endp
;
1583 ftdi
->command_next
+= 1;
1584 ftdi_elan_kick_command_queue(ftdi
);
1585 up(&ftdi
->u132_lock
);
1588 up(&ftdi
->u132_lock
);
1595 int usb_ftdi_elan_edset_setup(struct platform_device
*pdev
, u8 ed_number
,
1596 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1597 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1598 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1599 int halted
, int skipped
, int actual
, int non_null
))
1601 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1602 return ftdi_elan_edset_setup(ftdi
, ed_number
, endp
, urb
, address
,
1603 ep_number
, toggle_bits
, callback
);
1607 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_setup
);
1608 static int ftdi_elan_edset_input(struct usb_ftdi
*ftdi
, u8 ed_number
,
1609 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1610 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1611 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1612 int halted
, int skipped
, int actual
, int non_null
))
1614 u8 ed
= ed_number
- 1;
1615 wait
:if (ftdi
->disconnected
> 0) {
1617 } else if (ftdi
->initialized
== 0) {
1621 down(&ftdi
->u132_lock
);
1622 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1623 if (command_size
< COMMAND_SIZE
) {
1624 struct u132_target
*target
= &ftdi
->target
[ed
];
1625 struct u132_command
*command
= &ftdi
->command
[
1626 COMMAND_MASK
& ftdi
->command_next
];
1627 int remaining_length
= urb
->transfer_buffer_length
-
1629 command
->header
= 0x82 | (ed
<< 5);
1630 if (remaining_length
== 0) {
1631 command
->length
= 0x0000;
1632 } else if (remaining_length
> 1024) {
1633 command
->length
= 0x8000 | 1023;
1635 command
->length
= 0x8000 | (remaining_length
-
1637 command
->address
= (toggle_bits
<< 6) | (ep_number
<< 2)
1639 command
->width
= usb_maxpacket(urb
->dev
, urb
->pipe
,
1640 usb_pipeout(urb
->pipe
));
1641 command
->follows
= 0;
1643 command
->buffer
= NULL
;
1644 target
->callback
= callback
;
1645 target
->endp
= endp
;
1648 ftdi
->command_next
+= 1;
1649 ftdi_elan_kick_command_queue(ftdi
);
1650 up(&ftdi
->u132_lock
);
1653 up(&ftdi
->u132_lock
);
1660 int usb_ftdi_elan_edset_input(struct platform_device
*pdev
, u8 ed_number
,
1661 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1662 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1663 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1664 int halted
, int skipped
, int actual
, int non_null
))
1666 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1667 return ftdi_elan_edset_input(ftdi
, ed_number
, endp
, urb
, address
,
1668 ep_number
, toggle_bits
, callback
);
1672 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_input
);
1673 static int ftdi_elan_edset_empty(struct usb_ftdi
*ftdi
, u8 ed_number
,
1674 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1675 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1676 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1677 int halted
, int skipped
, int actual
, int non_null
))
1679 u8 ed
= ed_number
- 1;
1680 wait
:if (ftdi
->disconnected
> 0) {
1682 } else if (ftdi
->initialized
== 0) {
1686 down(&ftdi
->u132_lock
);
1687 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1688 if (command_size
< COMMAND_SIZE
) {
1689 struct u132_target
*target
= &ftdi
->target
[ed
];
1690 struct u132_command
*command
= &ftdi
->command
[
1691 COMMAND_MASK
& ftdi
->command_next
];
1692 command
->header
= 0x81 | (ed
<< 5);
1693 command
->length
= 0x0000;
1694 command
->address
= (toggle_bits
<< 6) | (ep_number
<< 2)
1696 command
->width
= usb_maxpacket(urb
->dev
, urb
->pipe
,
1697 usb_pipeout(urb
->pipe
));
1698 command
->follows
= 0;
1700 command
->buffer
= NULL
;
1701 target
->callback
= callback
;
1702 target
->endp
= endp
;
1705 ftdi
->command_next
+= 1;
1706 ftdi_elan_kick_command_queue(ftdi
);
1707 up(&ftdi
->u132_lock
);
1710 up(&ftdi
->u132_lock
);
1717 int usb_ftdi_elan_edset_empty(struct platform_device
*pdev
, u8 ed_number
,
1718 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1719 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1720 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1721 int halted
, int skipped
, int actual
, int non_null
))
1723 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1724 return ftdi_elan_edset_empty(ftdi
, ed_number
, endp
, urb
, address
,
1725 ep_number
, toggle_bits
, callback
);
1729 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_empty
);
1730 static int ftdi_elan_edset_output(struct usb_ftdi
*ftdi
, u8 ed_number
,
1731 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1732 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1733 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1734 int halted
, int skipped
, int actual
, int non_null
))
1736 u8 ed
= ed_number
- 1;
1737 wait
:if (ftdi
->disconnected
> 0) {
1739 } else if (ftdi
->initialized
== 0) {
1743 down(&ftdi
->u132_lock
);
1744 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1745 if (command_size
< COMMAND_SIZE
) {
1749 char data
[30 *3 + 4];
1751 int m
= (sizeof(data
) - 1) / 3;
1753 struct u132_target
*target
= &ftdi
->target
[ed
];
1754 struct u132_command
*command
= &ftdi
->command
[
1755 COMMAND_MASK
& ftdi
->command_next
];
1756 command
->header
= 0x81 | (ed
<< 5);
1757 command
->address
= (toggle_bits
<< 6) | (ep_number
<< 2)
1759 command
->width
= usb_maxpacket(urb
->dev
, urb
->pipe
,
1760 usb_pipeout(urb
->pipe
));
1761 command
->follows
= min(1024,
1762 urb
->transfer_buffer_length
-
1763 urb
->actual_length
);
1765 command
->buffer
= urb
->transfer_buffer
+
1767 command
->length
= 0x8000 | (command
->follows
- 1);
1768 b
= command
->buffer
;
1769 urb_size
= command
->follows
;
1771 while (urb_size
-- > 0) {
1773 } else if (i
++ < m
) {
1774 int w
= sprintf(d
, " %02X", *b
++);
1778 d
+= sprintf(d
, " ..");
1780 target
->callback
= callback
;
1781 target
->endp
= endp
;
1784 ftdi
->command_next
+= 1;
1785 ftdi_elan_kick_command_queue(ftdi
);
1786 up(&ftdi
->u132_lock
);
1789 up(&ftdi
->u132_lock
);
1796 int usb_ftdi_elan_edset_output(struct platform_device
*pdev
, u8 ed_number
,
1797 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1798 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1799 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1800 int halted
, int skipped
, int actual
, int non_null
))
1802 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1803 return ftdi_elan_edset_output(ftdi
, ed_number
, endp
, urb
, address
,
1804 ep_number
, toggle_bits
, callback
);
1808 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_output
);
1809 static int ftdi_elan_edset_single(struct usb_ftdi
*ftdi
, u8 ed_number
,
1810 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1811 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1812 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1813 int halted
, int skipped
, int actual
, int non_null
))
1815 u8 ed
= ed_number
- 1;
1816 wait
:if (ftdi
->disconnected
> 0) {
1818 } else if (ftdi
->initialized
== 0) {
1822 down(&ftdi
->u132_lock
);
1823 command_size
= ftdi
->command_next
- ftdi
->command_head
;
1824 if (command_size
< COMMAND_SIZE
) {
1825 int remaining_length
= urb
->transfer_buffer_length
-
1827 struct u132_target
*target
= &ftdi
->target
[ed
];
1828 struct u132_command
*command
= &ftdi
->command
[
1829 COMMAND_MASK
& ftdi
->command_next
];
1830 command
->header
= 0x83 | (ed
<< 5);
1831 if (remaining_length
== 0) {
1832 command
->length
= 0x0000;
1833 } else if (remaining_length
> 1024) {
1834 command
->length
= 0x8000 | 1023;
1836 command
->length
= 0x8000 | (remaining_length
-
1838 command
->address
= (toggle_bits
<< 6) | (ep_number
<< 2)
1840 command
->width
= usb_maxpacket(urb
->dev
, urb
->pipe
,
1841 usb_pipeout(urb
->pipe
));
1842 command
->follows
= 0;
1844 command
->buffer
= NULL
;
1845 target
->callback
= callback
;
1846 target
->endp
= endp
;
1849 ftdi
->command_next
+= 1;
1850 ftdi_elan_kick_command_queue(ftdi
);
1851 up(&ftdi
->u132_lock
);
1854 up(&ftdi
->u132_lock
);
1861 int usb_ftdi_elan_edset_single(struct platform_device
*pdev
, u8 ed_number
,
1862 void *endp
, struct urb
*urb
, u8 address
, u8 ep_number
, u8 toggle_bits
,
1863 void (*callback
) (void *endp
, struct urb
*urb
, u8
*buf
, int len
,
1864 int toggle_bits
, int error_count
, int condition_code
, int repeat_number
,
1865 int halted
, int skipped
, int actual
, int non_null
))
1867 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1868 return ftdi_elan_edset_single(ftdi
, ed_number
, endp
, urb
, address
,
1869 ep_number
, toggle_bits
, callback
);
1873 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_single
);
1874 static int ftdi_elan_edset_flush(struct usb_ftdi
*ftdi
, u8 ed_number
,
1877 u8 ed
= ed_number
- 1;
1878 if (ftdi
->disconnected
> 0) {
1880 } else if (ftdi
->initialized
== 0) {
1883 struct u132_target
*target
= &ftdi
->target
[ed
];
1884 down(&ftdi
->u132_lock
);
1885 if (target
->abandoning
> 0) {
1886 up(&ftdi
->u132_lock
);
1889 target
->abandoning
= 1;
1890 wait_1
:if (target
->active
== 1) {
1891 int command_size
= ftdi
->command_next
-
1893 if (command_size
< COMMAND_SIZE
) {
1894 struct u132_command
*command
=
1895 &ftdi
->command
[COMMAND_MASK
&
1896 ftdi
->command_next
];
1897 command
->header
= 0x80 | (ed
<< 5) |
1899 command
->length
= 0x00;
1900 command
->address
= 0x00;
1901 command
->width
= 0x00;
1902 command
->follows
= 0;
1904 command
->buffer
= &command
->value
;
1905 ftdi
->command_next
+= 1;
1906 ftdi_elan_kick_command_queue(ftdi
);
1908 up(&ftdi
->u132_lock
);
1910 down(&ftdi
->u132_lock
);
1914 up(&ftdi
->u132_lock
);
1920 int usb_ftdi_elan_edset_flush(struct platform_device
*pdev
, u8 ed_number
,
1923 struct usb_ftdi
*ftdi
= platform_device_to_usb_ftdi(pdev
);
1924 return ftdi_elan_edset_flush(ftdi
, ed_number
, endp
);
1928 EXPORT_SYMBOL_GPL(usb_ftdi_elan_edset_flush
);
1929 static int ftdi_elan_flush_input_fifo(struct usb_ftdi
*ftdi
)
1931 int retry_on_empty
= 10;
1932 int retry_on_timeout
= 5;
1933 int retry_on_status
= 20;
1935 int packet_bytes
= 0;
1936 int retval
= usb_bulk_msg(ftdi
->udev
,
1937 usb_rcvbulkpipe(ftdi
->udev
, ftdi
->bulk_in_endpointAddr
),
1938 ftdi
->bulk_in_buffer
, ftdi
->bulk_in_size
,
1939 &packet_bytes
, msecs_to_jiffies(100));
1940 if (packet_bytes
> 2) {
1941 char diag
[30 *3 + 4];
1943 int m
= (sizeof(diag
) - 1) / 3;
1944 char *b
= ftdi
->bulk_in_buffer
;
1947 while (packet_bytes
-- > 0) {
1949 if (bytes_read
< m
) {
1950 d
+= sprintf(d
, " %02X",
1952 } else if (bytes_read
> m
) {
1954 d
+= sprintf(d
, " ..");
1959 } else if (packet_bytes
> 1) {
1960 char s1
= ftdi
->bulk_in_buffer
[0];
1961 char s2
= ftdi
->bulk_in_buffer
[1];
1962 if (s1
== 0x31 && s2
== 0x60) {
1964 } else if (retry_on_status
-- > 0) {
1967 dev_err(&ftdi
->udev
->dev
, "STATUS ERROR retry l"
1971 } else if (packet_bytes
> 0) {
1972 char b1
= ftdi
->bulk_in_buffer
[0];
1973 dev_err(&ftdi
->udev
->dev
, "only one byte flushed from F"
1974 "TDI = %02X\n", b1
);
1975 if (retry_on_status
-- > 0) {
1978 dev_err(&ftdi
->udev
->dev
, "STATUS ERROR retry l"
1982 } else if (retval
== -ETIMEDOUT
) {
1983 if (retry_on_timeout
-- > 0) {
1986 dev_err(&ftdi
->udev
->dev
, "TIMED OUT retry limi"
1990 } else if (retval
== 0) {
1991 if (retry_on_empty
-- > 0) {
1994 dev_err(&ftdi
->udev
->dev
, "empty packet retry l"
1999 dev_err(&ftdi
->udev
->dev
, "error = %d\n", retval
);
2008 * send the long flush sequence
2011 static int ftdi_elan_synchronize_flush(struct usb_ftdi
*ftdi
)
2018 urb
= usb_alloc_urb(0, GFP_KERNEL
);
2020 dev_err(&ftdi
->udev
->dev
, "could not alloc a urb for flush sequ"
2024 buf
= usb_buffer_alloc(ftdi
->udev
, I
, GFP_KERNEL
, &urb
->transfer_dma
);
2026 dev_err(&ftdi
->udev
->dev
, "could not get a buffer for flush seq"
2033 usb_fill_bulk_urb(urb
, ftdi
->udev
, usb_sndbulkpipe(ftdi
->udev
,
2034 ftdi
->bulk_out_endpointAddr
), buf
, i
,
2035 ftdi_elan_write_bulk_callback
, ftdi
);
2036 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
2037 retval
= usb_submit_urb(urb
, GFP_KERNEL
);
2039 dev_err(&ftdi
->udev
->dev
, "failed to submit urb containing the "
2040 "flush sequence\n");
2041 usb_buffer_free(ftdi
->udev
, i
, buf
, urb
->transfer_dma
);
2051 * send the reset sequence
2054 static int ftdi_elan_synchronize_reset(struct usb_ftdi
*ftdi
)
2061 urb
= usb_alloc_urb(0, GFP_KERNEL
);
2063 dev_err(&ftdi
->udev
->dev
, "could not get a urb for the reset se"
2067 buf
= usb_buffer_alloc(ftdi
->udev
, I
, GFP_KERNEL
, &urb
->transfer_dma
);
2069 dev_err(&ftdi
->udev
->dev
, "could not get a buffer for the reset"
2078 usb_fill_bulk_urb(urb
, ftdi
->udev
, usb_sndbulkpipe(ftdi
->udev
,
2079 ftdi
->bulk_out_endpointAddr
), buf
, i
,
2080 ftdi_elan_write_bulk_callback
, ftdi
);
2081 urb
->transfer_flags
|= URB_NO_TRANSFER_DMA_MAP
;
2082 retval
= usb_submit_urb(urb
, GFP_KERNEL
);
2084 dev_err(&ftdi
->udev
->dev
, "failed to submit urb containing the "
2085 "reset sequence\n");
2086 usb_buffer_free(ftdi
->udev
, i
, buf
, urb
->transfer_dma
);
2094 static int ftdi_elan_synchronize(struct usb_ftdi
*ftdi
)
2098 int retry_on_timeout
= 5;
2099 int retry_on_empty
= 10;
2101 retval
= ftdi_elan_flush_input_fifo(ftdi
);
2104 ftdi
->bulk_in_left
= 0;
2105 ftdi
->bulk_in_last
= -1;
2106 while (long_stop
-- > 0) {
2109 retval
= ftdi_elan_synchronize_flush(ftdi
);
2112 retval
= ftdi_elan_flush_input_fifo(ftdi
);
2115 reset
:retval
= ftdi_elan_synchronize_reset(ftdi
);
2121 int packet_bytes
= 0;
2122 retval
= usb_bulk_msg(ftdi
->udev
,
2123 usb_rcvbulkpipe(ftdi
->udev
,
2124 ftdi
->bulk_in_endpointAddr
),
2125 ftdi
->bulk_in_buffer
, ftdi
->bulk_in_size
,
2126 &packet_bytes
, msecs_to_jiffies(500));
2127 if (packet_bytes
> 2) {
2128 char diag
[30 *3 + 4];
2130 int m
= (sizeof(diag
) - 1) / 3;
2131 char *b
= ftdi
->bulk_in_buffer
;
2133 unsigned char c
= 0;
2135 while (packet_bytes
-- > 0) {
2137 if (bytes_read
< m
) {
2138 d
+= sprintf(d
, " %02X", c
);
2139 } else if (bytes_read
> m
) {
2141 d
+= sprintf(d
, " ..");
2150 } else if (read_stop
-- > 0) {
2153 dev_err(&ftdi
->udev
->dev
, "retr"
2154 "y limit reached\n");
2158 } else if (packet_bytes
> 1) {
2159 unsigned char s1
= ftdi
->bulk_in_buffer
[0];
2160 unsigned char s2
= ftdi
->bulk_in_buffer
[1];
2161 if (s1
== 0x31 && s2
== 0x00) {
2162 if (read_stuck
-- > 0) {
2166 } else if (s1
== 0x31 && s2
== 0x60) {
2167 if (read_stop
-- > 0) {
2170 dev_err(&ftdi
->udev
->dev
, "retr"
2171 "y limit reached\n");
2175 if (read_stop
-- > 0) {
2178 dev_err(&ftdi
->udev
->dev
, "retr"
2179 "y limit reached\n");
2183 } else if (packet_bytes
> 0) {
2184 if (read_stop
-- > 0) {
2187 dev_err(&ftdi
->udev
->dev
, "retry limit "
2191 } else if (retval
== -ETIMEDOUT
) {
2192 if (retry_on_timeout
-- > 0) {
2195 dev_err(&ftdi
->udev
->dev
, "TIMED OUT re"
2196 "try limit reached\n");
2199 } else if (retval
== 0) {
2200 if (retry_on_empty
-- > 0) {
2203 dev_err(&ftdi
->udev
->dev
, "empty packet"
2204 " retry limit reached\n");
2209 dev_err(&ftdi
->udev
->dev
, "error = %d\n",
2211 if (read_stop
-- > 0) {
2214 dev_err(&ftdi
->udev
->dev
, "retry limit "
2221 dev_err(&ftdi
->udev
->dev
, "failed to synchronize\n");
2225 static int ftdi_elan_stuck_waiting(struct usb_ftdi
*ftdi
)
2227 int retry_on_empty
= 10;
2228 int retry_on_timeout
= 5;
2229 int retry_on_status
= 50;
2231 int packet_bytes
= 0;
2232 int retval
= usb_bulk_msg(ftdi
->udev
,
2233 usb_rcvbulkpipe(ftdi
->udev
, ftdi
->bulk_in_endpointAddr
),
2234 ftdi
->bulk_in_buffer
, ftdi
->bulk_in_size
,
2235 &packet_bytes
, msecs_to_jiffies(1000));
2236 if (packet_bytes
> 2) {
2237 char diag
[30 *3 + 4];
2239 int m
= (sizeof(diag
) - 1) / 3;
2240 char *b
= ftdi
->bulk_in_buffer
;
2243 while (packet_bytes
-- > 0) {
2245 if (bytes_read
< m
) {
2246 d
+= sprintf(d
, " %02X",
2248 } else if (bytes_read
> m
) {
2250 d
+= sprintf(d
, " ..");
2255 } else if (packet_bytes
> 1) {
2256 char s1
= ftdi
->bulk_in_buffer
[0];
2257 char s2
= ftdi
->bulk_in_buffer
[1];
2258 if (s1
== 0x31 && s2
== 0x60) {
2260 } else if (retry_on_status
-- > 0) {
2265 } else if (packet_bytes
> 0) {
2266 char b1
= ftdi
->bulk_in_buffer
[0];
2267 dev_err(&ftdi
->udev
->dev
, "only one byte flushed from F"
2268 "TDI = %02X\n", b1
);
2269 if (retry_on_status
-- > 0) {
2273 dev_err(&ftdi
->udev
->dev
, "STATUS ERROR retry l"
2277 } else if (retval
== -ETIMEDOUT
) {
2278 if (retry_on_timeout
-- > 0) {
2281 dev_err(&ftdi
->udev
->dev
, "TIMED OUT retry limi"
2285 } else if (retval
== 0) {
2286 if (retry_on_empty
-- > 0) {
2289 dev_err(&ftdi
->udev
->dev
, "empty packet retry l"
2294 dev_err(&ftdi
->udev
->dev
, "error = %d\n", retval
);
2301 static int ftdi_elan_checkingPCI(struct usb_ftdi
*ftdi
)
2303 int UxxxStatus
= ftdi_elan_read_reg(ftdi
, &ftdi
->controlreg
);
2306 if (ftdi
->controlreg
& 0x00400000) {
2307 if (ftdi
->card_ejected
) {
2309 ftdi
->card_ejected
= 1;
2310 dev_err(&ftdi
->udev
->dev
, "CARD EJECTED - controlreg = "
2311 "%08X\n", ftdi
->controlreg
);
2315 u8 fn
= ftdi
->function
- 1;
2316 int activePCIfn
= fn
<< 8;
2321 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2325 pciVID
= pcidata
& 0xFFFF;
2326 pciPID
= (pcidata
>> 16) & 0xFFFF;
2327 if (pciVID
== ftdi
->platform_data
.vendor
&& pciPID
==
2328 ftdi
->platform_data
.device
) {
2331 dev_err(&ftdi
->udev
->dev
, "vendor=%04X pciVID=%04X devi"
2332 "ce=%04X pciPID=%04X\n",
2333 ftdi
->platform_data
.vendor
, pciVID
,
2334 ftdi
->platform_data
.device
, pciPID
);
2340 static int ftdi_elan_enumeratePCI(struct usb_ftdi
*ftdi
)
2349 int activePCIfn
= 0;
2352 UxxxStatus
= ftdi_elan_read_reg(ftdi
, &controlreg
);
2355 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x00000000L
);
2359 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x00000200L
| 0x100);
2362 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x00000200L
| 0x500);
2365 UxxxStatus
= ftdi_elan_read_reg(ftdi
, &controlreg
);
2368 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x0000020CL
| 0x000);
2371 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x0000020DL
| 0x000);
2375 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x0000020FL
| 0x000);
2378 UxxxStatus
= ftdi_elan_read_reg(ftdi
, &controlreg
);
2381 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x0000025FL
| 0x800);
2384 UxxxStatus
= ftdi_elan_read_reg(ftdi
, &controlreg
);
2387 UxxxStatus
= ftdi_elan_read_reg(ftdi
, &controlreg
);
2391 for (fn
= 0; (fn
< 4) && (!foundOHCI
); fn
++) {
2392 activePCIfn
= fn
<< 8;
2393 ftdi
->function
= fn
+ 1;
2394 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2398 pciVID
= pcidata
& 0xFFFF;
2399 pciPID
= (pcidata
>> 16) & 0xFFFF;
2400 if ((pciVID
== 0x1045) && (pciPID
== 0xc861)) {
2402 } else if ((pciVID
== 0x1033) && (pciPID
== 0x0035)) {
2404 } else if ((pciVID
== 0x10b9) && (pciPID
== 0x5237)) {
2406 } else if ((pciVID
== 0x11c1) && (pciPID
== 0x5802)) {
2408 } else if ((pciVID
== 0x11AB) && (pciPID
== 0x1FA6)) {
2411 if (foundOHCI
== 0) {
2414 ftdi
->platform_data
.vendor
= pciVID
;
2415 ftdi
->platform_data
.device
= pciPID
;
2416 UxxxStatus
= ftdi_elan_write_reg(ftdi
, 0x0000025FL
| 0x2800);
2420 UxxxStatus
= ftdi_elan_write_config(ftdi
, activePCIfn
| reg
, 0,
2424 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2428 UxxxStatus
= ftdi_elan_write_config(ftdi
, activePCIfn
| reg
, 0,
2432 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2437 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2441 latence_timer
&= 0xFFFF00FF;
2442 latence_timer
|= 0x00001600;
2443 UxxxStatus
= ftdi_elan_write_config(ftdi
, activePCIfn
| reg
, 0x00,
2447 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2452 UxxxStatus
= ftdi_elan_write_config(ftdi
, activePCIfn
| reg
, 0x00,
2456 UxxxStatus
= ftdi_elan_read_config(ftdi
, activePCIfn
| reg
, 0,
2463 static int ftdi_elan_setupOHCI(struct usb_ftdi
*ftdi
)
2468 int reset_repeat
= 0;
2470 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x0e, 0x01);
2474 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2479 if (reset_repeat
++ > 100) {
2489 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x11000000);
2492 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2496 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x2edf);
2499 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2503 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x2edf2edf);
2506 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2510 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0xA0);
2513 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2518 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x0e, 0x04);
2521 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2525 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2529 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2533 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x00001200);
2536 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2540 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2544 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2548 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x28002edf);
2551 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2556 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x10000);
2560 power_check
:U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2563 if (!(pcidata
& 1)) {
2569 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2573 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2577 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x02);
2580 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2584 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x10);
2587 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2593 U132Status
= ftdi_elan_write_pcimem(ftdi
, reg
, 0x00, 0x02);
2598 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2603 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2607 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2610 dump_regs
:for (reg
= 0; reg
<= 0x54; reg
+= 4) {
2611 U132Status
= ftdi_elan_read_pcimem(ftdi
, reg
, 0, &pcidata
);
2620 * we use only the first bulk-in and bulk-out endpoints
2622 static int ftdi_elan_probe(struct usb_interface
*interface
,
2623 const struct usb_device_id
*id
)
2625 struct usb_host_interface
*iface_desc
;
2626 struct usb_endpoint_descriptor
*endpoint
;
2629 int retval
= -ENOMEM
;
2630 struct usb_ftdi
*ftdi
= kmalloc(sizeof(struct usb_ftdi
), GFP_KERNEL
);
2632 printk(KERN_ERR
"Out of memory\n");
2635 memset(ftdi
, 0x00, sizeof(struct usb_ftdi
));
2636 down(&ftdi_module_lock
);
2637 list_add_tail(&ftdi
->ftdi_list
, &ftdi_static_list
);
2638 ftdi
->sequence_num
= ++ftdi_instances
;
2639 up(&ftdi_module_lock
);
2640 ftdi_elan_init_kref(ftdi
);
2641 init_MUTEX(&ftdi
->sw_lock
);
2642 ftdi
->udev
= usb_get_dev(interface_to_usbdev(interface
));
2643 ftdi
->interface
= interface
;
2644 init_MUTEX(&ftdi
->u132_lock
);
2646 iface_desc
= interface
->cur_altsetting
;
2647 for (i
= 0; i
< iface_desc
->desc
.bNumEndpoints
; ++i
) {
2648 endpoint
= &iface_desc
->endpoint
[i
].desc
;
2649 if (!ftdi
->bulk_in_endpointAddr
&&
2650 ((endpoint
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
)
2651 == USB_DIR_IN
) && ((endpoint
->bmAttributes
&
2652 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_BULK
))
2654 buffer_size
= le16_to_cpu(endpoint
->wMaxPacketSize
);
2655 ftdi
->bulk_in_size
= buffer_size
;
2656 ftdi
->bulk_in_endpointAddr
= endpoint
->bEndpointAddress
;
2657 ftdi
->bulk_in_buffer
= kmalloc(buffer_size
, GFP_KERNEL
);
2658 if (!ftdi
->bulk_in_buffer
) {
2659 dev_err(&ftdi
->udev
->dev
, "Could not allocate b"
2665 if (!ftdi
->bulk_out_endpointAddr
&&
2666 ((endpoint
->bEndpointAddress
& USB_ENDPOINT_DIR_MASK
)
2667 == USB_DIR_OUT
) && ((endpoint
->bmAttributes
&
2668 USB_ENDPOINT_XFERTYPE_MASK
) == USB_ENDPOINT_XFER_BULK
))
2670 ftdi
->bulk_out_endpointAddr
=
2671 endpoint
->bEndpointAddress
;
2674 if (!(ftdi
->bulk_in_endpointAddr
&& ftdi
->bulk_out_endpointAddr
)) {
2675 dev_err(&ftdi
->udev
->dev
, "Could not find both bulk-in and bulk"
2676 "-out endpoints\n");
2680 dev_info(&ftdi
->udev
->dev
, "interface %d has I=%02X O=%02X\n",
2681 iface_desc
->desc
.bInterfaceNumber
, ftdi
->bulk_in_endpointAddr
,
2682 ftdi
->bulk_out_endpointAddr
);
2683 usb_set_intfdata(interface
, ftdi
);
2684 if (iface_desc
->desc
.bInterfaceNumber
== 0 &&
2685 ftdi
->bulk_in_endpointAddr
== 0x81 &&
2686 ftdi
->bulk_out_endpointAddr
== 0x02) {
2687 retval
= usb_register_dev(interface
, &ftdi_elan_jtag_class
);
2689 dev_err(&ftdi
->udev
->dev
, "Not able to get a minor for "
2691 usb_set_intfdata(interface
, NULL
);
2695 ftdi
->class = &ftdi_elan_jtag_class
;
2696 dev_info(&ftdi
->udev
->dev
, "USB FDTI=%p JTAG interface "
2697 "%d now attached to ftdi%d\n", ftdi
,
2698 iface_desc
->desc
.bInterfaceNumber
,
2702 } else if (iface_desc
->desc
.bInterfaceNumber
== 1 &&
2703 ftdi
->bulk_in_endpointAddr
== 0x83 &&
2704 ftdi
->bulk_out_endpointAddr
== 0x04) {
2706 dev_info(&ftdi
->udev
->dev
, "USB FDTI=%p ELAN interface %d now a"
2707 "ctivated\n", ftdi
, iface_desc
->desc
.bInterfaceNumber
);
2708 INIT_WORK(&ftdi
->status_work
, ftdi_elan_status_work
,
2710 INIT_WORK(&ftdi
->command_work
, ftdi_elan_command_work
,
2712 INIT_WORK(&ftdi
->respond_work
, ftdi_elan_respond_work
,
2714 ftdi_status_queue_work(ftdi
, msecs_to_jiffies(3 *1000));
2717 dev_err(&ftdi
->udev
->dev
,
2718 "Could not find ELAN's U132 device\n");
2723 ftdi_elan_put_kref(ftdi
);
2728 static void ftdi_elan_disconnect(struct usb_interface
*interface
)
2730 struct usb_ftdi
*ftdi
= usb_get_intfdata(interface
);
2731 ftdi
->disconnected
+= 1;
2733 int minor
= interface
->minor
;
2734 struct usb_class_driver
*class = ftdi
->class;
2735 usb_set_intfdata(interface
, NULL
);
2736 usb_deregister_dev(interface
, class);
2737 dev_info(&ftdi
->udev
->dev
, "USB FTDI U132 jtag interface on min"
2738 "or %d now disconnected\n", minor
);
2740 ftdi_status_cancel_work(ftdi
);
2741 ftdi_command_cancel_work(ftdi
);
2742 ftdi_response_cancel_work(ftdi
);
2743 ftdi_elan_abandon_completions(ftdi
);
2744 ftdi_elan_abandon_targets(ftdi
);
2745 if (ftdi
->registered
) {
2746 platform_device_unregister(&ftdi
->platform_dev
);
2747 ftdi
->synchronized
= 0;
2748 ftdi
->enumerated
= 0;
2749 ftdi
->registered
= 0;
2751 flush_workqueue(status_queue
);
2752 flush_workqueue(command_queue
);
2753 flush_workqueue(respond_queue
);
2754 ftdi
->disconnected
+= 1;
2755 usb_set_intfdata(interface
, NULL
);
2756 dev_info(&ftdi
->udev
->dev
, "USB FTDI U132 host controller inter"
2757 "face now disconnected\n");
2759 ftdi_elan_put_kref(ftdi
);
2762 static struct usb_driver ftdi_elan_driver
= {
2763 .name
= "ftdi-elan",
2764 .probe
= ftdi_elan_probe
,
2765 .disconnect
= ftdi_elan_disconnect
,
2766 .id_table
= ftdi_elan_table
,
2768 static int __init
ftdi_elan_init(void)
2771 printk(KERN_INFO
"driver %s built at %s on %s\n", ftdi_elan_driver
.name
,
2772 __TIME__
, __DATE__
);
2773 init_MUTEX(&ftdi_module_lock
);
2774 INIT_LIST_HEAD(&ftdi_static_list
);
2775 status_queue
= create_singlethread_workqueue("ftdi-status-control");
2776 command_queue
= create_singlethread_workqueue("ftdi-command-engine");
2777 respond_queue
= create_singlethread_workqueue("ftdi-respond-engine");
2778 result
= usb_register(&ftdi_elan_driver
);
2780 printk(KERN_ERR
"usb_register failed. Error number %d\n",
2785 static void __exit
ftdi_elan_exit(void)
2787 struct usb_ftdi
*ftdi
;
2788 struct usb_ftdi
*temp
;
2789 usb_deregister(&ftdi_elan_driver
);
2790 printk(KERN_INFO
"ftdi_u132 driver deregistered\n");
2791 list_for_each_entry_safe(ftdi
, temp
, &ftdi_static_list
, ftdi_list
) {
2792 ftdi_status_cancel_work(ftdi
);
2793 ftdi_command_cancel_work(ftdi
);
2794 ftdi_response_cancel_work(ftdi
);
2795 } flush_workqueue(status_queue
);
2796 destroy_workqueue(status_queue
);
2797 status_queue
= NULL
;
2798 flush_workqueue(command_queue
);
2799 destroy_workqueue(command_queue
);
2800 command_queue
= NULL
;
2801 flush_workqueue(respond_queue
);
2802 destroy_workqueue(respond_queue
);
2803 respond_queue
= NULL
;
2807 module_init(ftdi_elan_init
);
2808 module_exit(ftdi_elan_exit
);