[PATCH] sparsemem base: teach discontig about sparse ranges
[usb.git] / drivers / usb / atm / speedtch.c
blob2a1697bfd69579c11543931813f10b1dd1ddde0e
1 /******************************************************************************
2 * speedtch.c - Alcatel SpeedTouch USB xDSL modem driver
4 * Copyright (C) 2001, Alcatel
5 * Copyright (C) 2003, Duncan Sands
6 * Copyright (C) 2004, David Woodhouse
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
18 * You should have received a copy of the GNU General Public License along with
19 * this program; if not, write to the Free Software Foundation, Inc., 59
20 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 ******************************************************************************/
24 #include <linux/module.h>
25 #include <linux/moduleparam.h>
26 #include <linux/gfp.h>
27 #include <linux/kernel.h>
28 #include <linux/sched.h>
29 #include <linux/timer.h>
30 #include <linux/errno.h>
31 #include <linux/proc_fs.h>
32 #include <linux/slab.h>
33 #include <linux/wait.h>
34 #include <linux/list.h>
35 #include <asm/processor.h>
36 #include <asm/uaccess.h>
37 #include <linux/smp_lock.h>
38 #include <linux/interrupt.h>
39 #include <linux/atm.h>
40 #include <linux/atmdev.h>
41 #include <linux/crc32.h>
42 #include <linux/init.h>
43 #include <linux/firmware.h>
45 #include "usb_atm.h"
47 #if defined(CONFIG_FW_LOADER) || defined(CONFIG_FW_LOADER_MODULE)
48 # define USE_FW_LOADER
49 #endif
51 #define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>"
52 #define DRIVER_VERSION "1.8"
53 #define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION
55 static const char speedtch_driver_name[] = "speedtch";
57 #define SPEEDTOUCH_VENDORID 0x06b9
58 #define SPEEDTOUCH_PRODUCTID 0x4061
60 /* Timeout in jiffies */
61 #define CTRL_TIMEOUT 2000
62 #define DATA_TIMEOUT 2000
64 #define OFFSET_7 0 /* size 1 */
65 #define OFFSET_b 1 /* size 8 */
66 #define OFFSET_d 9 /* size 4 */
67 #define OFFSET_e 13 /* size 1 */
68 #define OFFSET_f 14 /* size 1 */
69 #define TOTAL 15
71 #define SIZE_7 1
72 #define SIZE_b 8
73 #define SIZE_d 4
74 #define SIZE_e 1
75 #define SIZE_f 1
77 static int dl_512_first = 0;
78 static int sw_buffering = 0;
80 module_param(dl_512_first, bool, 0444);
81 MODULE_PARM_DESC(dl_512_first, "Read 512 bytes before sending firmware");
83 module_param(sw_buffering, uint, 0444);
84 MODULE_PARM_DESC(sw_buffering, "Enable software buffering");
86 #define UDSL_IOCTL_LINE_UP 1
87 #define UDSL_IOCTL_LINE_DOWN 2
89 #define SPEEDTCH_ENDPOINT_INT 0x81
90 #define SPEEDTCH_ENDPOINT_DATA 0x07
91 #define SPEEDTCH_ENDPOINT_FIRMWARE 0x05
93 #define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) )
95 static struct usb_device_id speedtch_usb_ids[] = {
96 {USB_DEVICE(SPEEDTOUCH_VENDORID, SPEEDTOUCH_PRODUCTID)},
100 MODULE_DEVICE_TABLE(usb, speedtch_usb_ids);
102 struct speedtch_instance_data {
103 struct udsl_instance_data u;
105 /* Status */
106 struct urb *int_urb;
107 unsigned char int_data[16];
108 struct work_struct poll_work;
109 struct timer_list poll_timer;
111 /* USB */
113 static int speedtch_usb_probe(struct usb_interface *intf,
114 const struct usb_device_id *id);
115 static void speedtch_usb_disconnect(struct usb_interface *intf);
116 static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
117 void *user_data);
118 static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs);
119 static void speedtch_poll_status(struct speedtch_instance_data *instance);
121 static struct usb_driver speedtch_usb_driver = {
122 .owner = THIS_MODULE,
123 .name = speedtch_driver_name,
124 .probe = speedtch_usb_probe,
125 .disconnect = speedtch_usb_disconnect,
126 .ioctl = speedtch_usb_ioctl,
127 .id_table = speedtch_usb_ids,
130 /***************
131 ** firmware **
132 ***************/
134 static void speedtch_got_firmware(struct speedtch_instance_data *instance,
135 int got_it)
137 int err;
138 struct usb_interface *intf;
140 down(&instance->u.serialize); /* vs self, speedtch_firmware_start */
141 if (instance->u.status == UDSL_LOADED_FIRMWARE)
142 goto out;
143 if (!got_it) {
144 instance->u.status = UDSL_NO_FIRMWARE;
145 goto out;
147 if ((err = usb_set_interface(instance->u.usb_dev, 1, 1)) < 0) {
148 dbg("speedtch_got_firmware: usb_set_interface returned %d!", err);
149 instance->u.status = UDSL_NO_FIRMWARE;
150 goto out;
153 /* Set up interrupt endpoint */
154 intf = usb_ifnum_to_if(instance->u.usb_dev, 0);
155 if (intf && !usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) {
157 instance->int_urb = usb_alloc_urb(0, GFP_KERNEL);
158 if (instance->int_urb) {
160 usb_fill_int_urb(instance->int_urb, instance->u.usb_dev,
161 usb_rcvintpipe(instance->u.usb_dev, SPEEDTCH_ENDPOINT_INT),
162 instance->int_data,
163 sizeof(instance->int_data),
164 speedtch_handle_int, instance, 50);
165 err = usb_submit_urb(instance->int_urb, GFP_KERNEL);
166 if (err) {
167 /* Doesn't matter; we'll poll anyway */
168 dbg("speedtch_got_firmware: Submission of interrupt URB failed %d", err);
169 usb_free_urb(instance->int_urb);
170 instance->int_urb = NULL;
171 usb_driver_release_interface(&speedtch_usb_driver, intf);
175 /* Start status polling */
176 mod_timer(&instance->poll_timer, jiffies + (1 * HZ));
178 instance->u.status = UDSL_LOADED_FIRMWARE;
179 tasklet_schedule(&instance->u.receive_tasklet);
180 out:
181 up(&instance->u.serialize);
182 wake_up_interruptible(&instance->u.firmware_waiters);
185 static int speedtch_set_swbuff(struct speedtch_instance_data *instance,
186 int state)
188 struct usb_device *dev = instance->u.usb_dev;
189 int ret;
191 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
192 0x32, 0x40, state ? 0x01 : 0x00,
193 0x00, NULL, 0, 100);
194 if (ret < 0) {
195 printk("Warning: %sabling SW buffering: usb_control_msg returned %d\n",
196 state ? "En" : "Dis", ret);
197 return ret;
200 dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis");
201 return 0;
204 static void speedtch_test_sequence(struct speedtch_instance_data *instance)
206 struct usb_device *dev = instance->u.usb_dev;
207 unsigned char buf[10];
208 int ret;
210 /* URB 147 */
211 buf[0] = 0x1c;
212 buf[1] = 0x50;
213 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
214 0x01, 0x40, 0x0b, 0x00, buf, 2, 100);
215 if (ret < 0)
216 printk(KERN_WARNING "%s failed on URB147: %d\n", __func__, ret);
218 /* URB 148 */
219 buf[0] = 0x32;
220 buf[1] = 0x00;
221 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
222 0x01, 0x40, 0x02, 0x00, buf, 2, 100);
223 if (ret < 0)
224 printk(KERN_WARNING "%s failed on URB148: %d\n", __func__, ret);
226 /* URB 149 */
227 buf[0] = 0x01;
228 buf[1] = 0x00;
229 buf[2] = 0x01;
230 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
231 0x01, 0x40, 0x03, 0x00, buf, 3, 100);
232 if (ret < 0)
233 printk(KERN_WARNING "%s failed on URB149: %d\n", __func__, ret);
235 /* URB 150 */
236 buf[0] = 0x01;
237 buf[1] = 0x00;
238 buf[2] = 0x01;
239 ret = usb_control_msg(dev, usb_sndctrlpipe(dev, 0),
240 0x01, 0x40, 0x04, 0x00, buf, 3, 100);
241 if (ret < 0)
242 printk(KERN_WARNING "%s failed on URB150: %d\n", __func__, ret);
245 static int speedtch_start_synchro(struct speedtch_instance_data *instance)
247 struct usb_device *dev = instance->u.usb_dev;
248 unsigned char buf[2];
249 int ret;
251 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
252 0x12, 0xc0, 0x04, 0x00,
253 buf, sizeof(buf), CTRL_TIMEOUT);
254 if (ret < 0) {
255 printk(KERN_WARNING "SpeedTouch: Failed to start ADSL synchronisation: %d\n", ret);
256 return ret;
259 dbg("speedtch_start_synchro: modem prodded. %d Bytes returned: %02x %02x", ret, buf[0], buf[1]);
260 return 0;
263 static void speedtch_handle_int(struct urb *urb, struct pt_regs *regs)
265 struct speedtch_instance_data *instance = urb->context;
266 unsigned int count = urb->actual_length;
267 int ret;
269 /* The magic interrupt for "up state" */
270 const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 };
271 /* The magic interrupt for "down state" */
272 const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 };
274 switch (urb->status) {
275 case 0:
276 /* success */
277 break;
278 case -ECONNRESET:
279 case -ENOENT:
280 case -ESHUTDOWN:
281 /* this urb is terminated; clean up */
282 dbg("%s - urb shutting down with status: %d", __func__, urb->status);
283 return;
284 default:
285 dbg("%s - nonzero urb status received: %d", __func__, urb->status);
286 goto exit;
289 if (count < 6) {
290 dbg("%s - int packet too short", __func__);
291 goto exit;
294 if (!memcmp(up_int, instance->int_data, 6)) {
295 del_timer(&instance->poll_timer);
296 printk(KERN_NOTICE "DSL line goes up\n");
297 } else if (!memcmp(down_int, instance->int_data, 6)) {
298 printk(KERN_NOTICE "DSL line goes down\n");
299 } else {
300 int i;
302 printk(KERN_DEBUG "Unknown interrupt packet of %d bytes:", count);
303 for (i = 0; i < count; i++)
304 printk(" %02x", instance->int_data[i]);
305 printk("\n");
307 schedule_work(&instance->poll_work);
309 exit:
310 rmb();
311 if (!instance->int_urb)
312 return;
314 ret = usb_submit_urb(urb, GFP_ATOMIC);
315 if (ret)
316 err("%s - usb_submit_urb failed with result %d", __func__, ret);
319 static int speedtch_get_status(struct speedtch_instance_data *instance,
320 unsigned char *buf)
322 struct usb_device *dev = instance->u.usb_dev;
323 int ret;
325 memset(buf, 0, TOTAL);
327 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
328 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7,
329 CTRL_TIMEOUT);
330 if (ret < 0) {
331 dbg("MSG 7 failed");
332 return ret;
335 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
336 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b,
337 CTRL_TIMEOUT);
338 if (ret < 0) {
339 dbg("MSG B failed");
340 return ret;
343 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
344 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d,
345 CTRL_TIMEOUT);
346 if (ret < 0) {
347 dbg("MSG D failed");
348 return ret;
351 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
352 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e,
353 CTRL_TIMEOUT);
354 if (ret < 0) {
355 dbg("MSG E failed");
356 return ret;
359 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
360 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f,
361 CTRL_TIMEOUT);
362 if (ret < 0) {
363 dbg("MSG F failed");
364 return ret;
367 return 0;
370 static void speedtch_poll_status(struct speedtch_instance_data *instance)
372 unsigned char buf[TOTAL];
373 int ret;
375 ret = speedtch_get_status(instance, buf);
376 if (ret) {
377 printk(KERN_WARNING
378 "SpeedTouch: Error %d fetching device status\n", ret);
379 return;
382 dbg("Line state %02x", buf[OFFSET_7]);
384 switch (buf[OFFSET_7]) {
385 case 0:
386 if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
387 instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
388 printk(KERN_NOTICE "ADSL line is down\n");
389 /* It'll never resync again unless we ask it to... */
390 speedtch_start_synchro(instance);
392 break;
394 case 0x08:
395 if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
396 instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
397 printk(KERN_NOTICE "ADSL line is blocked?\n");
399 break;
401 case 0x10:
402 if (instance->u.atm_dev->signal != ATM_PHY_SIG_LOST) {
403 instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
404 printk(KERN_NOTICE "ADSL line is synchronising\n");
406 break;
408 case 0x20:
409 if (instance->u.atm_dev->signal != ATM_PHY_SIG_FOUND) {
410 int down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8)
411 | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24);
412 int up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8)
413 | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24);
415 if (!(down_speed & 0x0000ffff) &&
416 !(up_speed & 0x0000ffff)) {
417 down_speed >>= 16;
418 up_speed >>= 16;
420 instance->u.atm_dev->link_rate = down_speed * 1000 / 424;
421 instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
423 printk(KERN_NOTICE
424 "ADSL line is up (%d Kib/s down | %d Kib/s up)\n",
425 down_speed, up_speed);
427 break;
429 default:
430 if (instance->u.atm_dev->signal != ATM_PHY_SIG_UNKNOWN) {
431 instance->u.atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
432 printk(KERN_NOTICE "Unknown line state %02x\n", buf[OFFSET_7]);
434 break;
438 static void speedtch_timer_poll(unsigned long data)
440 struct speedtch_instance_data *instance = (void *)data;
442 schedule_work(&instance->poll_work);
443 mod_timer(&instance->poll_timer, jiffies + (5 * HZ));
446 #ifdef USE_FW_LOADER
447 static void speedtch_upload_firmware(struct speedtch_instance_data *instance,
448 const struct firmware *fw1,
449 const struct firmware *fw2)
451 unsigned char *buffer;
452 struct usb_device *usb_dev = instance->u.usb_dev;
453 struct usb_interface *intf;
454 int actual_length, ret;
455 int offset;
457 dbg("speedtch_upload_firmware");
459 if (!(intf = usb_ifnum_to_if(usb_dev, 2))) {
460 dbg("speedtch_upload_firmware: interface not found!");
461 goto fail;
464 if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) {
465 dbg("speedtch_upload_firmware: no memory for buffer!");
466 goto fail;
469 /* A user-space firmware loader may already have claimed interface #2 */
470 if ((ret =
471 usb_driver_claim_interface(&speedtch_usb_driver, intf, NULL)) < 0) {
472 dbg("speedtch_upload_firmware: interface in use (%d)!", ret);
473 goto fail_free;
476 /* URB 7 */
477 if (dl_512_first) { /* some modems need a read before writing the firmware */
478 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
479 buffer, 0x200, &actual_length, 2000);
481 if (ret < 0 && ret != -ETIMEDOUT)
482 dbg("speedtch_upload_firmware: read BLOCK0 from modem failed (%d)!", ret);
483 else
484 dbg("speedtch_upload_firmware: BLOCK0 downloaded (%d bytes)", ret);
487 /* URB 8 : both leds are static green */
488 for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) {
489 int thislen = min_t(int, PAGE_SIZE, fw1->size - offset);
490 memcpy(buffer, fw1->data + offset, thislen);
492 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
493 buffer, thislen, &actual_length, DATA_TIMEOUT);
495 if (ret < 0) {
496 dbg("speedtch_upload_firmware: write BLOCK1 to modem failed (%d)!", ret);
497 goto fail_release;
499 dbg("speedtch_upload_firmware: BLOCK1 uploaded (%zu bytes)", fw1->size);
502 /* USB led blinking green, ADSL led off */
504 /* URB 11 */
505 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
506 buffer, 0x200, &actual_length, DATA_TIMEOUT);
508 if (ret < 0) {
509 dbg("speedtch_upload_firmware: read BLOCK2 from modem failed (%d)!", ret);
510 goto fail_release;
512 dbg("speedtch_upload_firmware: BLOCK2 downloaded (%d bytes)", actual_length);
514 /* URBs 12 to 139 - USB led blinking green, ADSL led off */
515 for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) {
516 int thislen = min_t(int, PAGE_SIZE, fw2->size - offset);
517 memcpy(buffer, fw2->data + offset, thislen);
519 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
520 buffer, thislen, &actual_length, DATA_TIMEOUT);
522 if (ret < 0) {
523 dbg("speedtch_upload_firmware: write BLOCK3 to modem failed (%d)!", ret);
524 goto fail_release;
527 dbg("speedtch_upload_firmware: BLOCK3 uploaded (%zu bytes)", fw2->size);
529 /* USB led static green, ADSL led static red */
531 /* URB 142 */
532 ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, SPEEDTCH_ENDPOINT_FIRMWARE),
533 buffer, 0x200, &actual_length, DATA_TIMEOUT);
535 if (ret < 0) {
536 dbg("speedtch_upload_firmware: read BLOCK4 from modem failed (%d)!", ret);
537 goto fail_release;
540 /* success */
541 dbg("speedtch_upload_firmware: BLOCK4 downloaded (%d bytes)", actual_length);
543 /* Delay to allow firmware to start up. We can do this here
544 because we're in our own kernel thread anyway. */
545 msleep(1000);
547 /* Enable software buffering, if requested */
548 if (sw_buffering)
549 speedtch_set_swbuff(instance, 1);
551 /* Magic spell; don't ask us what this does */
552 speedtch_test_sequence(instance);
554 /* Start modem synchronisation */
555 if (speedtch_start_synchro(instance))
556 dbg("speedtch_start_synchro: failed");
558 speedtch_got_firmware(instance, 1);
560 free_page((unsigned long)buffer);
561 return;
563 fail_release:
564 /* Only release interface #2 if uploading failed; we don't release it
565 we succeeded. This prevents the userspace tools from trying to load
566 the firmware themselves */
567 usb_driver_release_interface(&speedtch_usb_driver, intf);
568 fail_free:
569 free_page((unsigned long)buffer);
570 fail:
571 speedtch_got_firmware(instance, 0);
574 static int speedtch_find_firmware(struct speedtch_instance_data
575 *instance, int phase,
576 const struct firmware **fw_p)
578 char buf[24];
579 const u16 bcdDevice = le16_to_cpu(instance->u.usb_dev->descriptor.bcdDevice);
580 const u8 major_revision = bcdDevice >> 8;
581 const u8 minor_revision = bcdDevice & 0xff;
583 sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision);
584 dbg("speedtch_find_firmware: looking for %s", buf);
586 if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
587 sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision);
588 dbg("speedtch_find_firmware: looking for %s", buf);
590 if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
591 sprintf(buf, "speedtch-%d.bin", phase);
592 dbg("speedtch_find_firmware: looking for %s", buf);
594 if (request_firmware(fw_p, buf, &instance->u.usb_dev->dev)) {
595 dev_warn(&instance->u.usb_dev->dev, "no stage %d firmware found!", phase);
596 return -ENOENT;
601 dev_info(&instance->u.usb_dev->dev, "found stage %d firmware %s\n", phase, buf);
603 return 0;
606 static int speedtch_load_firmware(void *arg)
608 const struct firmware *fw1, *fw2;
609 struct speedtch_instance_data *instance = arg;
611 BUG_ON(!instance);
613 daemonize("firmware/speedtch");
615 if (!speedtch_find_firmware(instance, 1, &fw1)) {
616 if (!speedtch_find_firmware(instance, 2, &fw2)) {
617 speedtch_upload_firmware(instance, fw1, fw2);
618 release_firmware(fw2);
620 release_firmware(fw1);
623 /* In case we failed, set state back to NO_FIRMWARE so that
624 another later attempt may work. Otherwise, we never actually
625 manage to recover if, for example, the firmware is on /usr and
626 we look for it too early. */
627 speedtch_got_firmware(instance, 0);
629 module_put(THIS_MODULE);
630 udsl_put_instance(&instance->u);
631 return 0;
633 #endif /* USE_FW_LOADER */
635 static void speedtch_firmware_start(struct speedtch_instance_data *instance)
637 #ifdef USE_FW_LOADER
638 int ret;
639 #endif
641 dbg("speedtch_firmware_start");
643 down(&instance->u.serialize); /* vs self, speedtch_got_firmware */
645 if (instance->u.status >= UDSL_LOADING_FIRMWARE) {
646 up(&instance->u.serialize);
647 return;
650 instance->u.status = UDSL_LOADING_FIRMWARE;
651 up(&instance->u.serialize);
653 #ifdef USE_FW_LOADER
654 udsl_get_instance(&instance->u);
655 try_module_get(THIS_MODULE);
657 ret = kernel_thread(speedtch_load_firmware, instance,
658 CLONE_FS | CLONE_FILES);
660 if (ret >= 0)
661 return; /* OK */
663 dbg("speedtch_firmware_start: kernel_thread failed (%d)!", ret);
665 module_put(THIS_MODULE);
666 udsl_put_instance(&instance->u);
667 /* Just pretend it never happened... hope modem_run happens */
668 #endif /* USE_FW_LOADER */
670 speedtch_got_firmware(instance, 0);
673 static int speedtch_firmware_wait(struct udsl_instance_data *instance)
675 speedtch_firmware_start((void *)instance);
677 if (wait_event_interruptible(instance->firmware_waiters, instance->status != UDSL_LOADING_FIRMWARE) < 0)
678 return -ERESTARTSYS;
680 return (instance->status == UDSL_LOADED_FIRMWARE) ? 0 : -EAGAIN;
683 /**********
684 ** USB **
685 **********/
687 static int speedtch_usb_ioctl(struct usb_interface *intf, unsigned int code,
688 void *user_data)
690 struct speedtch_instance_data *instance = usb_get_intfdata(intf);
692 dbg("speedtch_usb_ioctl entered");
694 if (!instance) {
695 dbg("speedtch_usb_ioctl: NULL instance!");
696 return -ENODEV;
699 switch (code) {
700 case UDSL_IOCTL_LINE_UP:
701 instance->u.atm_dev->signal = ATM_PHY_SIG_FOUND;
702 speedtch_got_firmware(instance, 1);
703 return (instance->u.status == UDSL_LOADED_FIRMWARE) ? 0 : -EIO;
704 case UDSL_IOCTL_LINE_DOWN:
705 instance->u.atm_dev->signal = ATM_PHY_SIG_LOST;
706 return 0;
707 default:
708 return -ENOTTY;
712 static int speedtch_usb_probe(struct usb_interface *intf,
713 const struct usb_device_id *id)
715 struct usb_device *dev = interface_to_usbdev(intf);
716 int ifnum = intf->altsetting->desc.bInterfaceNumber;
717 struct speedtch_instance_data *instance;
718 unsigned char mac_str[13];
719 int ret, i;
720 char buf7[SIZE_7];
722 dbg("speedtch_usb_probe: trying device with vendor=0x%x, product=0x%x, ifnum %d",
723 le16_to_cpu(dev->descriptor.idVendor),
724 le16_to_cpu(dev->descriptor.idProduct), ifnum);
726 if ((dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) ||
727 (ifnum != 1))
728 return -ENODEV;
730 dbg("speedtch_usb_probe: device accepted");
732 /* instance init */
733 instance = kmalloc(sizeof(*instance), GFP_KERNEL);
734 if (!instance) {
735 dbg("speedtch_usb_probe: no memory for instance data!");
736 return -ENOMEM;
739 memset(instance, 0, sizeof(struct speedtch_instance_data));
741 if ((ret = usb_set_interface(dev, 0, 0)) < 0)
742 goto fail;
744 if ((ret = usb_set_interface(dev, 2, 0)) < 0)
745 goto fail;
747 instance->u.data_endpoint = SPEEDTCH_ENDPOINT_DATA;
748 instance->u.firmware_wait = speedtch_firmware_wait;
749 instance->u.driver_name = speedtch_driver_name;
751 ret = udsl_instance_setup(dev, &instance->u);
752 if (ret)
753 goto fail;
755 init_timer(&instance->poll_timer);
756 instance->poll_timer.function = speedtch_timer_poll;
757 instance->poll_timer.data = (unsigned long)instance;
759 INIT_WORK(&instance->poll_work, (void *)speedtch_poll_status, instance);
761 /* set MAC address, it is stored in the serial number */
762 memset(instance->u.atm_dev->esi, 0, sizeof(instance->u.atm_dev->esi));
763 if (usb_string(dev, dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) {
764 for (i = 0; i < 6; i++)
765 instance->u.atm_dev->esi[i] =
766 (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1]));
769 /* First check whether the modem already seems to be alive */
770 ret = usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
771 0x12, 0xc0, 0x07, 0x00, buf7, SIZE_7, 500);
773 if (ret == SIZE_7) {
774 dbg("firmware appears to be already loaded");
775 speedtch_got_firmware(instance, 1);
776 speedtch_poll_status(instance);
777 } else {
778 speedtch_firmware_start(instance);
781 usb_set_intfdata(intf, instance);
783 return 0;
785 fail:
786 kfree(instance);
788 return -ENOMEM;
791 static void speedtch_usb_disconnect(struct usb_interface *intf)
793 struct speedtch_instance_data *instance = usb_get_intfdata(intf);
795 dbg("speedtch_usb_disconnect entered");
797 if (!instance) {
798 dbg("speedtch_usb_disconnect: NULL instance!");
799 return;
802 /*QQ need to handle disconnects on interface #2 while uploading firmware */
803 /*QQ and what about interface #1? */
805 if (instance->int_urb) {
806 struct urb *int_urb = instance->int_urb;
807 instance->int_urb = NULL;
808 wmb();
809 usb_unlink_urb(int_urb);
810 usb_free_urb(int_urb);
813 instance->int_data[0] = 1;
814 del_timer_sync(&instance->poll_timer);
815 wmb();
816 flush_scheduled_work();
818 udsl_instance_disconnect(&instance->u);
820 /* clean up */
821 usb_set_intfdata(intf, NULL);
822 udsl_put_instance(&instance->u);
825 /***********
826 ** init **
827 ***********/
829 static int __init speedtch_usb_init(void)
831 dbg("speedtch_usb_init: driver version " DRIVER_VERSION);
833 return usb_register(&speedtch_usb_driver);
836 static void __exit speedtch_usb_cleanup(void)
838 dbg("speedtch_usb_cleanup entered");
840 usb_deregister(&speedtch_usb_driver);
843 module_init(speedtch_usb_init);
844 module_exit(speedtch_usb_cleanup);
846 MODULE_AUTHOR(DRIVER_AUTHOR);
847 MODULE_DESCRIPTION(DRIVER_DESC);
848 MODULE_LICENSE("GPL");
849 MODULE_VERSION(DRIVER_VERSION);