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1da177e4 LT |
1 | /****************************************************************************** |
2 | * speedtch.c - Alcatel SpeedTouch USB xDSL modem driver | |
3 | * | |
4 | * Copyright (C) 2001, Alcatel | |
5 | * Copyright (C) 2003, Duncan Sands | |
6 | * Copyright (C) 2004, David Woodhouse | |
7 | * | |
48da7267 DS |
8 | * Based on "modem_run.c", copyright (C) 2001, Benoit Papillault |
9 | * | |
1da177e4 LT |
10 | * This program is free software; you can redistribute it and/or modify it |
11 | * under the terms of the GNU General Public License as published by the Free | |
12 | * Software Foundation; either version 2 of the License, or (at your option) | |
13 | * any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, but WITHOUT | |
16 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
17 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
18 | * more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License along with | |
21 | * this program; if not, write to the Free Software Foundation, Inc., 59 | |
22 | * Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
23 | * | |
24 | ******************************************************************************/ | |
25 | ||
48da7267 DS |
26 | #include <asm/page.h> |
27 | #include <linux/device.h> | |
28 | #include <linux/errno.h> | |
29 | #include <linux/firmware.h> | |
1da177e4 | 30 | #include <linux/gfp.h> |
48da7267 | 31 | #include <linux/init.h> |
1da177e4 | 32 | #include <linux/kernel.h> |
48da7267 DS |
33 | #include <linux/module.h> |
34 | #include <linux/moduleparam.h> | |
1da177e4 | 35 | #include <linux/slab.h> |
48da7267 DS |
36 | #include <linux/stat.h> |
37 | #include <linux/timer.h> | |
38 | #include <linux/workqueue.h> | |
1da177e4 | 39 | |
48da7267 | 40 | #include "usbatm.h" |
1da177e4 LT |
41 | |
42 | #define DRIVER_AUTHOR "Johan Verrept, Duncan Sands <duncan.sands@free.fr>" | |
48da7267 | 43 | #define DRIVER_VERSION "1.9" |
1da177e4 LT |
44 | #define DRIVER_DESC "Alcatel SpeedTouch USB driver version " DRIVER_VERSION |
45 | ||
46 | static const char speedtch_driver_name[] = "speedtch"; | |
47 | ||
48da7267 DS |
48 | #define CTRL_TIMEOUT 2000 /* milliseconds */ |
49 | #define DATA_TIMEOUT 2000 /* milliseconds */ | |
1da177e4 | 50 | |
48da7267 DS |
51 | #define OFFSET_7 0 /* size 1 */ |
52 | #define OFFSET_b 1 /* size 8 */ | |
53 | #define OFFSET_d 9 /* size 4 */ | |
54 | #define OFFSET_e 13 /* size 1 */ | |
55 | #define OFFSET_f 14 /* size 1 */ | |
56 | #define TOTAL 15 | |
1da177e4 | 57 | |
48da7267 DS |
58 | #define SIZE_7 1 |
59 | #define SIZE_b 8 | |
60 | #define SIZE_d 4 | |
61 | #define SIZE_e 1 | |
62 | #define SIZE_f 1 | |
1da177e4 | 63 | |
48da7267 DS |
64 | #define MIN_POLL_DELAY 5000 /* milliseconds */ |
65 | #define MAX_POLL_DELAY 60000 /* milliseconds */ | |
1da177e4 | 66 | |
48da7267 | 67 | #define RESUBMIT_DELAY 1000 /* milliseconds */ |
1da177e4 | 68 | |
48da7267 DS |
69 | #define DEFAULT_ALTSETTING 1 |
70 | #define DEFAULT_DL_512_FIRST 0 | |
71 | #define DEFAULT_SW_BUFFERING 0 | |
1da177e4 | 72 | |
48da7267 DS |
73 | static int altsetting = DEFAULT_ALTSETTING; |
74 | static int dl_512_first = DEFAULT_DL_512_FIRST; | |
75 | static int sw_buffering = DEFAULT_SW_BUFFERING; | |
1da177e4 | 76 | |
48da7267 DS |
77 | module_param(altsetting, int, S_IRUGO | S_IWUSR); |
78 | MODULE_PARM_DESC(altsetting, | |
79 | "Alternative setting for data interface (default: " | |
80 | __MODULE_STRING(DEFAULT_ALTSETTING) ")"); | |
1da177e4 | 81 | |
48da7267 DS |
82 | module_param(dl_512_first, bool, S_IRUGO | S_IWUSR); |
83 | MODULE_PARM_DESC(dl_512_first, | |
84 | "Read 512 bytes before sending firmware (default: " | |
85 | __MODULE_STRING(DEFAULT_DL_512_FIRST) ")"); | |
1da177e4 | 86 | |
48da7267 DS |
87 | module_param(sw_buffering, bool, S_IRUGO | S_IWUSR); |
88 | MODULE_PARM_DESC(sw_buffering, | |
89 | "Enable software buffering (default: " | |
90 | __MODULE_STRING(DEFAULT_SW_BUFFERING) ")"); | |
1da177e4 | 91 | |
48da7267 DS |
92 | #define ENDPOINT_INT 0x81 |
93 | #define ENDPOINT_DATA 0x07 | |
94 | #define ENDPOINT_FIRMWARE 0x05 | |
1da177e4 | 95 | |
48da7267 | 96 | #define hex2int(c) ( (c >= '0') && (c <= '9') ? (c - '0') : ((c & 0xf) + 9) ) |
1da177e4 LT |
97 | |
98 | struct speedtch_instance_data { | |
48da7267 DS |
99 | struct usbatm_data *usbatm; |
100 | ||
101 | struct work_struct status_checker; | |
1da177e4 | 102 | |
48da7267 DS |
103 | int poll_delay; /* milliseconds */ |
104 | ||
105 | struct timer_list resubmit_timer; | |
1da177e4 LT |
106 | struct urb *int_urb; |
107 | unsigned char int_data[16]; | |
1da177e4 | 108 | |
48da7267 | 109 | unsigned char scratch_buffer[TOTAL]; |
1da177e4 LT |
110 | }; |
111 | ||
112 | /*************** | |
113 | ** firmware ** | |
114 | ***************/ | |
115 | ||
48da7267 | 116 | static void speedtch_set_swbuff(struct speedtch_instance_data *instance, int state) |
1da177e4 | 117 | { |
48da7267 DS |
118 | struct usbatm_data *usbatm = instance->usbatm; |
119 | struct usb_device *usb_dev = usbatm->usb_dev; | |
1da177e4 LT |
120 | int ret; |
121 | ||
48da7267 DS |
122 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
123 | 0x32, 0x40, state ? 0x01 : 0x00, 0x00, NULL, 0, CTRL_TIMEOUT); | |
124 | if (ret < 0) | |
125 | usb_warn(usbatm, | |
126 | "%sabling SW buffering: usb_control_msg returned %d\n", | |
127 | state ? "En" : "Dis", ret); | |
128 | else | |
129 | dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis"); | |
1da177e4 LT |
130 | } |
131 | ||
132 | static void speedtch_test_sequence(struct speedtch_instance_data *instance) | |
133 | { | |
48da7267 DS |
134 | struct usbatm_data *usbatm = instance->usbatm; |
135 | struct usb_device *usb_dev = usbatm->usb_dev; | |
136 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
137 | int ret; |
138 | ||
139 | /* URB 147 */ | |
140 | buf[0] = 0x1c; | |
141 | buf[1] = 0x50; | |
48da7267 DS |
142 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
143 | 0x01, 0x40, 0x0b, 0x00, buf, 2, CTRL_TIMEOUT); | |
1da177e4 | 144 | if (ret < 0) |
48da7267 | 145 | usb_warn(usbatm, "%s failed on URB147: %d\n", __func__, ret); |
1da177e4 LT |
146 | |
147 | /* URB 148 */ | |
148 | buf[0] = 0x32; | |
149 | buf[1] = 0x00; | |
48da7267 DS |
150 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
151 | 0x01, 0x40, 0x02, 0x00, buf, 2, CTRL_TIMEOUT); | |
1da177e4 | 152 | if (ret < 0) |
48da7267 | 153 | usb_warn(usbatm, "%s failed on URB148: %d\n", __func__, ret); |
1da177e4 LT |
154 | |
155 | /* URB 149 */ | |
156 | buf[0] = 0x01; | |
157 | buf[1] = 0x00; | |
158 | buf[2] = 0x01; | |
48da7267 DS |
159 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
160 | 0x01, 0x40, 0x03, 0x00, buf, 3, CTRL_TIMEOUT); | |
1da177e4 | 161 | if (ret < 0) |
48da7267 | 162 | usb_warn(usbatm, "%s failed on URB149: %d\n", __func__, ret); |
1da177e4 LT |
163 | |
164 | /* URB 150 */ | |
165 | buf[0] = 0x01; | |
166 | buf[1] = 0x00; | |
167 | buf[2] = 0x01; | |
48da7267 DS |
168 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
169 | 0x01, 0x40, 0x04, 0x00, buf, 3, CTRL_TIMEOUT); | |
1da177e4 | 170 | if (ret < 0) |
48da7267 | 171 | usb_warn(usbatm, "%s failed on URB150: %d\n", __func__, ret); |
1da177e4 LT |
172 | } |
173 | ||
48da7267 DS |
174 | static int speedtch_upload_firmware(struct speedtch_instance_data *instance, |
175 | const struct firmware *fw1, | |
176 | const struct firmware *fw2) | |
1da177e4 | 177 | { |
48da7267 DS |
178 | unsigned char *buffer; |
179 | struct usbatm_data *usbatm = instance->usbatm; | |
180 | struct usb_interface *intf; | |
181 | struct usb_device *usb_dev = usbatm->usb_dev; | |
182 | int actual_length; | |
183 | int ret = 0; | |
184 | int offset; | |
185 | ||
186 | usb_dbg(usbatm, "%s entered\n", __func__); | |
187 | ||
188 | if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) { | |
189 | ret = -ENOMEM; | |
190 | usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__); | |
191 | goto out; | |
192 | } | |
193 | ||
194 | if (!(intf = usb_ifnum_to_if(usb_dev, 2))) { | |
195 | ret = -ENODEV; | |
196 | usb_dbg(usbatm, "%s: interface not found!\n", __func__); | |
197 | goto out_free; | |
198 | } | |
199 | ||
200 | /* URB 7 */ | |
201 | if (dl_512_first) { /* some modems need a read before writing the firmware */ | |
202 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
203 | buffer, 0x200, &actual_length, 2000); | |
204 | ||
205 | if (ret < 0 && ret != -ETIMEDOUT) | |
206 | usb_dbg(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret); | |
207 | else | |
208 | usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret); | |
209 | } | |
210 | ||
211 | /* URB 8 : both leds are static green */ | |
212 | for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) { | |
213 | int thislen = min_t(int, PAGE_SIZE, fw1->size - offset); | |
214 | memcpy(buffer, fw1->data + offset, thislen); | |
215 | ||
216 | ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
217 | buffer, thislen, &actual_length, DATA_TIMEOUT); | |
218 | ||
219 | if (ret < 0) { | |
220 | usb_dbg(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret); | |
221 | goto out_free; | |
222 | } | |
223 | usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size); | |
224 | } | |
225 | ||
226 | /* USB led blinking green, ADSL led off */ | |
227 | ||
228 | /* URB 11 */ | |
229 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
230 | buffer, 0x200, &actual_length, DATA_TIMEOUT); | |
1da177e4 | 231 | |
1da177e4 | 232 | if (ret < 0) { |
48da7267 DS |
233 | usb_dbg(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret); |
234 | goto out_free; | |
1da177e4 | 235 | } |
48da7267 | 236 | usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length); |
1da177e4 | 237 | |
48da7267 DS |
238 | /* URBs 12 to 139 - USB led blinking green, ADSL led off */ |
239 | for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) { | |
240 | int thislen = min_t(int, PAGE_SIZE, fw2->size - offset); | |
241 | memcpy(buffer, fw2->data + offset, thislen); | |
242 | ||
243 | ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
244 | buffer, thislen, &actual_length, DATA_TIMEOUT); | |
245 | ||
246 | if (ret < 0) { | |
247 | usb_dbg(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret); | |
248 | goto out_free; | |
249 | } | |
250 | } | |
251 | usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size); | |
252 | ||
253 | /* USB led static green, ADSL led static red */ | |
254 | ||
255 | /* URB 142 */ | |
256 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
257 | buffer, 0x200, &actual_length, DATA_TIMEOUT); | |
258 | ||
259 | if (ret < 0) { | |
260 | usb_dbg(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret); | |
261 | goto out_free; | |
262 | } | |
263 | ||
264 | /* success */ | |
265 | usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length); | |
266 | ||
267 | /* Delay to allow firmware to start up. We can do this here | |
268 | because we're in our own kernel thread anyway. */ | |
269 | msleep_interruptible(1000); | |
270 | ||
271 | /* Enable software buffering, if requested */ | |
272 | if (sw_buffering) | |
273 | speedtch_set_swbuff(instance, 1); | |
274 | ||
275 | /* Magic spell; don't ask us what this does */ | |
276 | speedtch_test_sequence(instance); | |
277 | ||
278 | ret = 0; | |
279 | ||
280 | out_free: | |
281 | free_page((unsigned long)buffer); | |
282 | out: | |
283 | return ret; | |
1da177e4 LT |
284 | } |
285 | ||
48da7267 DS |
286 | static int speedtch_find_firmware(struct usb_interface *intf, int phase, |
287 | const struct firmware **fw_p) | |
1da177e4 | 288 | { |
48da7267 DS |
289 | struct device *dev = &intf->dev; |
290 | const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice); | |
291 | const u8 major_revision = bcdDevice >> 8; | |
292 | const u8 minor_revision = bcdDevice & 0xff; | |
293 | char buf[24]; | |
1da177e4 | 294 | |
48da7267 DS |
295 | sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision); |
296 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
1da177e4 | 297 | |
48da7267 DS |
298 | if (request_firmware(fw_p, buf, dev)) { |
299 | sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision); | |
300 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
1da177e4 | 301 | |
48da7267 DS |
302 | if (request_firmware(fw_p, buf, dev)) { |
303 | sprintf(buf, "speedtch-%d.bin", phase); | |
304 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
305 | ||
306 | if (request_firmware(fw_p, buf, dev)) { | |
307 | dev_warn(dev, "no stage %d firmware found!\n", phase); | |
308 | return -ENOENT; | |
309 | } | |
310 | } | |
1da177e4 LT |
311 | } |
312 | ||
48da7267 | 313 | dev_info(dev, "found stage %d firmware %s\n", phase, buf); |
1da177e4 | 314 | |
48da7267 DS |
315 | return 0; |
316 | } | |
317 | ||
318 | static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface *intf) | |
319 | { | |
320 | const struct firmware *fw1, *fw2; | |
321 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
322 | int ret; | |
323 | ||
324 | if ((ret = speedtch_find_firmware(intf, 1, &fw1)) < 0) | |
325 | return ret; | |
326 | ||
327 | if ((ret = speedtch_find_firmware(intf, 2, &fw2)) < 0) { | |
328 | release_firmware(fw1); | |
329 | return ret; | |
1da177e4 | 330 | } |
1da177e4 | 331 | |
48da7267 DS |
332 | ret = speedtch_upload_firmware(instance, fw1, fw2); |
333 | ||
334 | release_firmware(fw2); | |
335 | release_firmware(fw1); | |
1da177e4 | 336 | |
48da7267 | 337 | return ret; |
1da177e4 LT |
338 | } |
339 | ||
48da7267 DS |
340 | |
341 | /********** | |
342 | ** ATM ** | |
343 | **********/ | |
344 | ||
345 | static int speedtch_read_status(struct speedtch_instance_data *instance) | |
1da177e4 | 346 | { |
48da7267 DS |
347 | struct usbatm_data *usbatm = instance->usbatm; |
348 | struct usb_device *usb_dev = usbatm->usb_dev; | |
349 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
350 | int ret; |
351 | ||
352 | memset(buf, 0, TOTAL); | |
353 | ||
48da7267 | 354 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
355 | 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, |
356 | CTRL_TIMEOUT); | |
357 | if (ret < 0) { | |
48da7267 | 358 | atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__); |
1da177e4 LT |
359 | return ret; |
360 | } | |
361 | ||
48da7267 | 362 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
363 | 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, |
364 | CTRL_TIMEOUT); | |
365 | if (ret < 0) { | |
48da7267 | 366 | atm_dbg(usbatm, "%s: MSG B failed\n", __func__); |
1da177e4 LT |
367 | return ret; |
368 | } | |
369 | ||
48da7267 | 370 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
371 | 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d, |
372 | CTRL_TIMEOUT); | |
373 | if (ret < 0) { | |
48da7267 | 374 | atm_dbg(usbatm, "%s: MSG D failed\n", __func__); |
1da177e4 LT |
375 | return ret; |
376 | } | |
377 | ||
48da7267 | 378 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
379 | 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e, |
380 | CTRL_TIMEOUT); | |
381 | if (ret < 0) { | |
48da7267 | 382 | atm_dbg(usbatm, "%s: MSG E failed\n", __func__); |
1da177e4 LT |
383 | return ret; |
384 | } | |
385 | ||
48da7267 | 386 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
387 | 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f, |
388 | CTRL_TIMEOUT); | |
389 | if (ret < 0) { | |
48da7267 | 390 | atm_dbg(usbatm, "%s: MSG F failed\n", __func__); |
1da177e4 LT |
391 | return ret; |
392 | } | |
393 | ||
394 | return 0; | |
395 | } | |
396 | ||
48da7267 | 397 | static int speedtch_start_synchro(struct speedtch_instance_data *instance) |
1da177e4 | 398 | { |
48da7267 DS |
399 | struct usbatm_data *usbatm = instance->usbatm; |
400 | struct usb_device *usb_dev = usbatm->usb_dev; | |
401 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
402 | int ret; |
403 | ||
48da7267 DS |
404 | atm_dbg(usbatm, "%s entered\n", __func__); |
405 | ||
406 | memset(buf, 0, 2); | |
407 | ||
408 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
409 | 0x12, 0xc0, 0x04, 0x00, | |
410 | buf, 2, CTRL_TIMEOUT); | |
411 | ||
412 | if (ret < 0) | |
413 | atm_warn(usbatm, "failed to start ADSL synchronisation: %d\n", ret); | |
414 | else | |
415 | atm_dbg(usbatm, "%s: modem prodded. %d bytes returned: %02x %02x\n", | |
416 | __func__, ret, buf[0], buf[1]); | |
417 | ||
418 | return ret; | |
419 | } | |
420 | ||
421 | static void speedtch_check_status(struct speedtch_instance_data *instance) | |
422 | { | |
423 | struct usbatm_data *usbatm = instance->usbatm; | |
424 | struct atm_dev *atm_dev = usbatm->atm_dev; | |
425 | unsigned char *buf = instance->scratch_buffer; | |
426 | int ret; | |
427 | ||
428 | atm_dbg(usbatm, "%s entered\n", __func__); | |
429 | ||
430 | ret = speedtch_read_status(instance); | |
431 | if (ret < 0) { | |
432 | atm_warn(usbatm, "error %d fetching device status\n", ret); | |
433 | if (instance->poll_delay < MAX_POLL_DELAY) | |
434 | instance->poll_delay *= 2; | |
1da177e4 LT |
435 | return; |
436 | } | |
437 | ||
48da7267 DS |
438 | if (instance->poll_delay > MIN_POLL_DELAY) |
439 | instance->poll_delay /= 2; | |
440 | ||
441 | atm_dbg(usbatm, "%s: line state %02x\n", __func__, buf[OFFSET_7]); | |
1da177e4 LT |
442 | |
443 | switch (buf[OFFSET_7]) { | |
444 | case 0: | |
48da7267 DS |
445 | if (atm_dev->signal != ATM_PHY_SIG_LOST) { |
446 | atm_dev->signal = ATM_PHY_SIG_LOST; | |
447 | atm_info(usbatm, "ADSL line is down\n"); | |
448 | /* It'll never resync again unless we ask it to... */ | |
449 | ret = speedtch_start_synchro(instance); | |
1da177e4 LT |
450 | } |
451 | break; | |
452 | ||
453 | case 0x08: | |
48da7267 DS |
454 | if (atm_dev->signal != ATM_PHY_SIG_UNKNOWN) { |
455 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; | |
456 | atm_info(usbatm, "ADSL line is blocked?\n"); | |
1da177e4 LT |
457 | } |
458 | break; | |
459 | ||
460 | case 0x10: | |
48da7267 DS |
461 | if (atm_dev->signal != ATM_PHY_SIG_LOST) { |
462 | atm_dev->signal = ATM_PHY_SIG_LOST; | |
463 | atm_info(usbatm, "ADSL line is synchronising\n"); | |
1da177e4 LT |
464 | } |
465 | break; | |
466 | ||
467 | case 0x20: | |
48da7267 | 468 | if (atm_dev->signal != ATM_PHY_SIG_FOUND) { |
1da177e4 LT |
469 | int down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8) |
470 | | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24); | |
471 | int up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8) | |
472 | | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24); | |
473 | ||
48da7267 | 474 | if (!(down_speed & 0x0000ffff) && !(up_speed & 0x0000ffff)) { |
1da177e4 LT |
475 | down_speed >>= 16; |
476 | up_speed >>= 16; | |
477 | } | |
1da177e4 | 478 | |
48da7267 DS |
479 | atm_dev->link_rate = down_speed * 1000 / 424; |
480 | atm_dev->signal = ATM_PHY_SIG_FOUND; | |
481 | ||
482 | atm_info(usbatm, | |
483 | "ADSL line is up (%d Kib/s down | %d Kib/s up)\n", | |
484 | down_speed, up_speed); | |
1da177e4 LT |
485 | } |
486 | break; | |
487 | ||
488 | default: | |
48da7267 DS |
489 | if (atm_dev->signal != ATM_PHY_SIG_UNKNOWN) { |
490 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; | |
491 | atm_info(usbatm, "Unknown line state %02x\n", buf[OFFSET_7]); | |
1da177e4 LT |
492 | } |
493 | break; | |
494 | } | |
495 | } | |
496 | ||
48da7267 | 497 | static void speedtch_status_poll(unsigned long data) |
1da177e4 LT |
498 | { |
499 | struct speedtch_instance_data *instance = (void *)data; | |
500 | ||
48da7267 DS |
501 | schedule_work(&instance->status_checker); |
502 | ||
503 | /* The following check is racy, but the race is harmless */ | |
504 | if (instance->poll_delay < MAX_POLL_DELAY) | |
505 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(instance->poll_delay)); | |
506 | else | |
507 | atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n"); | |
1da177e4 LT |
508 | } |
509 | ||
48da7267 | 510 | static void speedtch_resubmit_int(unsigned long data) |
1da177e4 | 511 | { |
48da7267 DS |
512 | struct speedtch_instance_data *instance = (void *)data; |
513 | struct urb *int_urb = instance->int_urb; | |
514 | int ret; | |
1da177e4 | 515 | |
48da7267 | 516 | atm_dbg(instance->usbatm, "%s entered\n", __func__); |
1da177e4 | 517 | |
48da7267 DS |
518 | if (int_urb) { |
519 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
520 | if (!ret) | |
521 | schedule_work(&instance->status_checker); | |
522 | else { | |
523 | atm_dbg(instance->usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); | |
524 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 | 525 | } |
1da177e4 | 526 | } |
48da7267 | 527 | } |
1da177e4 | 528 | |
48da7267 DS |
529 | static void speedtch_handle_int(struct urb *int_urb, struct pt_regs *regs) |
530 | { | |
531 | struct speedtch_instance_data *instance = int_urb->context; | |
532 | struct usbatm_data *usbatm = instance->usbatm; | |
533 | unsigned int count = int_urb->actual_length; | |
534 | int ret = int_urb->status; | |
1da177e4 | 535 | |
48da7267 DS |
536 | /* The magic interrupt for "up state" */ |
537 | const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 }; | |
538 | /* The magic interrupt for "down state" */ | |
539 | const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
540 | ||
541 | atm_dbg(usbatm, "%s entered\n", __func__); | |
1da177e4 LT |
542 | |
543 | if (ret < 0) { | |
48da7267 DS |
544 | atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, ret); |
545 | goto fail; | |
1da177e4 | 546 | } |
1da177e4 | 547 | |
48da7267 DS |
548 | if ((count == 6) && !memcmp(up_int, instance->int_data, 6)) { |
549 | del_timer(&instance->status_checker.timer); | |
550 | atm_info(usbatm, "DSL line goes up\n"); | |
551 | } else if ((count == 6) && !memcmp(down_int, instance->int_data, 6)) { | |
552 | atm_info(usbatm, "DSL line goes down\n"); | |
553 | } else { | |
554 | int i; | |
1da177e4 | 555 | |
48da7267 DS |
556 | atm_dbg(usbatm, "%s: unknown interrupt packet of length %d:", __func__, count); |
557 | for (i = 0; i < count; i++) | |
558 | printk(" %02x", instance->int_data[i]); | |
559 | printk("\n"); | |
560 | goto fail; | |
561 | } | |
1da177e4 | 562 | |
48da7267 DS |
563 | if ((int_urb = instance->int_urb)) { |
564 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
565 | schedule_work(&instance->status_checker); | |
1da177e4 | 566 | if (ret < 0) { |
48da7267 DS |
567 | atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); |
568 | goto fail; | |
1da177e4 LT |
569 | } |
570 | } | |
1da177e4 | 571 | |
1da177e4 LT |
572 | return; |
573 | ||
48da7267 DS |
574 | fail: |
575 | if ((int_urb = instance->int_urb)) | |
576 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 LT |
577 | } |
578 | ||
48da7267 | 579 | static int speedtch_atm_start(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 580 | { |
48da7267 DS |
581 | struct usb_device *usb_dev = usbatm->usb_dev; |
582 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
583 | int i, ret; | |
584 | unsigned char mac_str[13]; | |
1da177e4 | 585 | |
48da7267 | 586 | atm_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 587 | |
48da7267 DS |
588 | if ((ret = usb_set_interface(usb_dev, 1, altsetting)) < 0) { |
589 | atm_dbg(usbatm, "%s: usb_set_interface returned %d!\n", __func__, ret); | |
590 | return ret; | |
1da177e4 LT |
591 | } |
592 | ||
48da7267 DS |
593 | /* Set MAC address, it is stored in the serial number */ |
594 | memset(atm_dev->esi, 0, sizeof(atm_dev->esi)); | |
595 | if (usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) { | |
596 | for (i = 0; i < 6; i++) | |
597 | atm_dev->esi[i] = (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1])); | |
598 | } | |
1da177e4 | 599 | |
48da7267 DS |
600 | /* Start modem synchronisation */ |
601 | ret = speedtch_start_synchro(instance); | |
1da177e4 | 602 | |
48da7267 DS |
603 | /* Set up interrupt endpoint */ |
604 | if (instance->int_urb) { | |
605 | ret = usb_submit_urb(instance->int_urb, GFP_KERNEL); | |
606 | if (ret < 0) { | |
607 | /* Doesn't matter; we'll poll anyway */ | |
608 | atm_dbg(usbatm, "%s: submission of interrupt URB failed (%d)!\n", __func__, ret); | |
609 | usb_free_urb(instance->int_urb); | |
610 | instance->int_urb = NULL; | |
1da177e4 | 611 | } |
1da177e4 LT |
612 | } |
613 | ||
48da7267 DS |
614 | /* Start status polling */ |
615 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(1000)); | |
1da177e4 | 616 | |
1da177e4 LT |
617 | return 0; |
618 | } | |
1da177e4 | 619 | |
48da7267 | 620 | static void speedtch_atm_stop(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 621 | { |
48da7267 DS |
622 | struct speedtch_instance_data *instance = usbatm->driver_data; |
623 | struct urb *int_urb = instance->int_urb; | |
624 | ||
625 | atm_dbg(usbatm, "%s entered\n", __func__); | |
626 | ||
627 | del_timer_sync(&instance->status_checker.timer); | |
628 | ||
629 | /* | |
630 | * Since resubmit_timer and int_urb can schedule themselves and | |
631 | * each other, shutting them down correctly takes some care | |
632 | */ | |
633 | instance->int_urb = NULL; /* signal shutdown */ | |
634 | mb(); | |
635 | usb_kill_urb(int_urb); | |
636 | del_timer_sync(&instance->resubmit_timer); | |
637 | /* | |
638 | * At this point, speedtch_handle_int and speedtch_resubmit_int | |
639 | * can run or be running, but instance->int_urb == NULL means that | |
640 | * they will not reschedule | |
641 | */ | |
642 | usb_kill_urb(int_urb); | |
643 | del_timer_sync(&instance->resubmit_timer); | |
644 | usb_free_urb(int_urb); | |
1da177e4 | 645 | |
48da7267 DS |
646 | flush_scheduled_work(); |
647 | } | |
1da177e4 | 648 | |
1da177e4 | 649 | |
48da7267 DS |
650 | /********** |
651 | ** USB ** | |
652 | **********/ | |
1da177e4 | 653 | |
48da7267 DS |
654 | static struct usb_device_id speedtch_usb_ids[] = { |
655 | {USB_DEVICE(0x06b9, 0x4061)}, | |
656 | {} | |
657 | }; | |
1da177e4 | 658 | |
48da7267 | 659 | MODULE_DEVICE_TABLE(usb, speedtch_usb_ids); |
1da177e4 | 660 | |
48da7267 | 661 | static int speedtch_usb_probe(struct usb_interface *, const struct usb_device_id *); |
1da177e4 | 662 | |
48da7267 DS |
663 | static struct usb_driver speedtch_usb_driver = { |
664 | .owner = THIS_MODULE, | |
665 | .name = speedtch_driver_name, | |
666 | .probe = speedtch_usb_probe, | |
667 | .disconnect = usbatm_usb_disconnect, | |
668 | .id_table = speedtch_usb_ids | |
669 | }; | |
1da177e4 | 670 | |
48da7267 DS |
671 | static void speedtch_release_interfaces(struct usb_device *usb_dev, int num_interfaces) { |
672 | struct usb_interface *cur_intf; | |
673 | int i; | |
1da177e4 | 674 | |
48da7267 DS |
675 | for(i = 0; i < num_interfaces; i++) |
676 | if ((cur_intf = usb_ifnum_to_if(usb_dev, i))) { | |
677 | usb_set_intfdata(cur_intf, NULL); | |
678 | usb_driver_release_interface(&speedtch_usb_driver, cur_intf); | |
679 | } | |
1da177e4 LT |
680 | } |
681 | ||
48da7267 DS |
682 | static int speedtch_bind(struct usbatm_data *usbatm, |
683 | struct usb_interface *intf, | |
684 | const struct usb_device_id *id, | |
685 | int *need_heavy_init) | |
1da177e4 | 686 | { |
48da7267 DS |
687 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
688 | struct usb_interface *cur_intf; | |
689 | struct speedtch_instance_data *instance; | |
690 | int ifnum = intf->altsetting->desc.bInterfaceNumber; | |
691 | int num_interfaces = usb_dev->actconfig->desc.bNumInterfaces; | |
692 | int i, ret; | |
1da177e4 | 693 | |
48da7267 | 694 | usb_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 695 | |
48da7267 DS |
696 | if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) { |
697 | usb_dbg(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass); | |
1da177e4 LT |
698 | return -ENODEV; |
699 | } | |
700 | ||
48da7267 | 701 | /* claim all interfaces */ |
1da177e4 | 702 | |
48da7267 DS |
703 | for (i=0; i < num_interfaces; i++) { |
704 | cur_intf = usb_ifnum_to_if(usb_dev, i); | |
1da177e4 | 705 | |
48da7267 DS |
706 | if ((i != ifnum) && cur_intf) { |
707 | ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm); | |
1da177e4 | 708 | |
48da7267 DS |
709 | if (ret < 0) { |
710 | usb_dbg(usbatm, "%s: failed to claim interface %d (%d)\n", __func__, i, ret); | |
711 | speedtch_release_interfaces(usb_dev, i); | |
712 | return ret; | |
713 | } | |
714 | } | |
715 | } | |
1da177e4 | 716 | |
1da177e4 | 717 | instance = kmalloc(sizeof(*instance), GFP_KERNEL); |
48da7267 | 718 | |
1da177e4 | 719 | if (!instance) { |
48da7267 DS |
720 | usb_dbg(usbatm, "%s: no memory for instance data!\n", __func__); |
721 | ret = -ENOMEM; | |
722 | goto fail_release; | |
1da177e4 LT |
723 | } |
724 | ||
725 | memset(instance, 0, sizeof(struct speedtch_instance_data)); | |
726 | ||
48da7267 | 727 | instance->usbatm = usbatm; |
1da177e4 | 728 | |
48da7267 | 729 | INIT_WORK(&instance->status_checker, (void *)speedtch_check_status, instance); |
1da177e4 | 730 | |
48da7267 DS |
731 | instance->status_checker.timer.function = speedtch_status_poll; |
732 | instance->status_checker.timer.data = (unsigned long)instance; | |
733 | instance->poll_delay = MIN_POLL_DELAY; | |
1da177e4 | 734 | |
48da7267 DS |
735 | init_timer(&instance->resubmit_timer); |
736 | instance->resubmit_timer.function = speedtch_resubmit_int; | |
737 | instance->resubmit_timer.data = (unsigned long)instance; | |
1da177e4 | 738 | |
48da7267 | 739 | instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); |
1da177e4 | 740 | |
48da7267 DS |
741 | if (instance->int_urb) |
742 | usb_fill_int_urb(instance->int_urb, usb_dev, | |
743 | usb_rcvintpipe(usb_dev, ENDPOINT_INT), | |
744 | instance->int_data, sizeof(instance->int_data), | |
745 | speedtch_handle_int, instance, 50); | |
746 | else | |
747 | usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__); | |
1da177e4 | 748 | |
48da7267 DS |
749 | /* check whether the modem already seems to be alive */ |
750 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
751 | 0x12, 0xc0, 0x07, 0x00, | |
752 | instance->scratch_buffer + OFFSET_7, SIZE_7, 500); | |
1da177e4 | 753 | |
48da7267 | 754 | *need_heavy_init = (ret != SIZE_7); |
1da177e4 | 755 | |
48da7267 DS |
756 | usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, need_heavy_init ? "not" : "already"); |
757 | ||
758 | if (*need_heavy_init) | |
759 | if ((ret = usb_reset_device(usb_dev)) < 0) | |
760 | goto fail_free; | |
1da177e4 | 761 | |
48da7267 | 762 | usbatm->driver_data = instance; |
1da177e4 LT |
763 | |
764 | return 0; | |
765 | ||
48da7267 DS |
766 | fail_free: |
767 | usb_free_urb(instance->int_urb); | |
1da177e4 | 768 | kfree(instance); |
48da7267 DS |
769 | fail_release: |
770 | speedtch_release_interfaces(usb_dev, num_interfaces); | |
771 | return ret; | |
1da177e4 LT |
772 | } |
773 | ||
48da7267 | 774 | static void speedtch_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) |
1da177e4 | 775 | { |
48da7267 DS |
776 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
777 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
1da177e4 | 778 | |
48da7267 | 779 | usb_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 780 | |
48da7267 DS |
781 | speedtch_release_interfaces(usb_dev, usb_dev->actconfig->desc.bNumInterfaces); |
782 | usb_free_urb(instance->int_urb); | |
783 | kfree(instance); | |
1da177e4 LT |
784 | } |
785 | ||
48da7267 | 786 | |
1da177e4 LT |
787 | /*********** |
788 | ** init ** | |
789 | ***********/ | |
790 | ||
48da7267 DS |
791 | static struct usbatm_driver speedtch_usbatm_driver = { |
792 | .owner = THIS_MODULE, | |
793 | .driver_name = speedtch_driver_name, | |
794 | .bind = speedtch_bind, | |
795 | .heavy_init = speedtch_heavy_init, | |
796 | .unbind = speedtch_unbind, | |
797 | .atm_start = speedtch_atm_start, | |
798 | .atm_stop = speedtch_atm_stop, | |
799 | .in = ENDPOINT_DATA, | |
800 | .out = ENDPOINT_DATA | |
801 | }; | |
802 | ||
803 | static int speedtch_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
804 | { | |
805 | return usbatm_usb_probe(intf, id, &speedtch_usbatm_driver); | |
806 | } | |
807 | ||
1da177e4 LT |
808 | static int __init speedtch_usb_init(void) |
809 | { | |
48da7267 | 810 | dbg("%s: driver version %s", __func__, DRIVER_VERSION); |
1da177e4 LT |
811 | |
812 | return usb_register(&speedtch_usb_driver); | |
813 | } | |
814 | ||
815 | static void __exit speedtch_usb_cleanup(void) | |
816 | { | |
48da7267 | 817 | dbg("%s", __func__); |
1da177e4 LT |
818 | |
819 | usb_deregister(&speedtch_usb_driver); | |
820 | } | |
821 | ||
822 | module_init(speedtch_usb_init); | |
823 | module_exit(speedtch_usb_cleanup); | |
824 | ||
825 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
826 | MODULE_DESCRIPTION(DRIVER_DESC); | |
827 | MODULE_LICENSE("GPL"); | |
828 | MODULE_VERSION(DRIVER_VERSION); |