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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 | |
1a7aad15 DS |
103 | unsigned char last_status; |
104 | ||
48da7267 DS |
105 | int poll_delay; /* milliseconds */ |
106 | ||
107 | struct timer_list resubmit_timer; | |
1da177e4 LT |
108 | struct urb *int_urb; |
109 | unsigned char int_data[16]; | |
1da177e4 | 110 | |
48da7267 | 111 | unsigned char scratch_buffer[TOTAL]; |
1da177e4 LT |
112 | }; |
113 | ||
114 | /*************** | |
115 | ** firmware ** | |
116 | ***************/ | |
117 | ||
48da7267 | 118 | static void speedtch_set_swbuff(struct speedtch_instance_data *instance, int state) |
1da177e4 | 119 | { |
48da7267 DS |
120 | struct usbatm_data *usbatm = instance->usbatm; |
121 | struct usb_device *usb_dev = usbatm->usb_dev; | |
1da177e4 LT |
122 | int ret; |
123 | ||
48da7267 DS |
124 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
125 | 0x32, 0x40, state ? 0x01 : 0x00, 0x00, NULL, 0, CTRL_TIMEOUT); | |
126 | if (ret < 0) | |
127 | usb_warn(usbatm, | |
128 | "%sabling SW buffering: usb_control_msg returned %d\n", | |
129 | state ? "En" : "Dis", ret); | |
130 | else | |
131 | dbg("speedtch_set_swbuff: %sbled SW buffering", state ? "En" : "Dis"); | |
1da177e4 LT |
132 | } |
133 | ||
134 | static void speedtch_test_sequence(struct speedtch_instance_data *instance) | |
135 | { | |
48da7267 DS |
136 | struct usbatm_data *usbatm = instance->usbatm; |
137 | struct usb_device *usb_dev = usbatm->usb_dev; | |
138 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
139 | int ret; |
140 | ||
141 | /* URB 147 */ | |
142 | buf[0] = 0x1c; | |
143 | buf[1] = 0x50; | |
48da7267 DS |
144 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
145 | 0x01, 0x40, 0x0b, 0x00, buf, 2, CTRL_TIMEOUT); | |
1da177e4 | 146 | if (ret < 0) |
48da7267 | 147 | usb_warn(usbatm, "%s failed on URB147: %d\n", __func__, ret); |
1da177e4 LT |
148 | |
149 | /* URB 148 */ | |
150 | buf[0] = 0x32; | |
151 | buf[1] = 0x00; | |
48da7267 DS |
152 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
153 | 0x01, 0x40, 0x02, 0x00, buf, 2, CTRL_TIMEOUT); | |
1da177e4 | 154 | if (ret < 0) |
48da7267 | 155 | usb_warn(usbatm, "%s failed on URB148: %d\n", __func__, ret); |
1da177e4 LT |
156 | |
157 | /* URB 149 */ | |
158 | buf[0] = 0x01; | |
159 | buf[1] = 0x00; | |
160 | buf[2] = 0x01; | |
48da7267 DS |
161 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
162 | 0x01, 0x40, 0x03, 0x00, buf, 3, CTRL_TIMEOUT); | |
1da177e4 | 163 | if (ret < 0) |
48da7267 | 164 | usb_warn(usbatm, "%s failed on URB149: %d\n", __func__, ret); |
1da177e4 LT |
165 | |
166 | /* URB 150 */ | |
167 | buf[0] = 0x01; | |
168 | buf[1] = 0x00; | |
169 | buf[2] = 0x01; | |
48da7267 DS |
170 | ret = usb_control_msg(usb_dev, usb_sndctrlpipe(usb_dev, 0), |
171 | 0x01, 0x40, 0x04, 0x00, buf, 3, CTRL_TIMEOUT); | |
1da177e4 | 172 | if (ret < 0) |
48da7267 | 173 | usb_warn(usbatm, "%s failed on URB150: %d\n", __func__, ret); |
1da177e4 LT |
174 | } |
175 | ||
48da7267 DS |
176 | static int speedtch_upload_firmware(struct speedtch_instance_data *instance, |
177 | const struct firmware *fw1, | |
178 | const struct firmware *fw2) | |
1da177e4 | 179 | { |
48da7267 DS |
180 | unsigned char *buffer; |
181 | struct usbatm_data *usbatm = instance->usbatm; | |
182 | struct usb_interface *intf; | |
183 | struct usb_device *usb_dev = usbatm->usb_dev; | |
184 | int actual_length; | |
185 | int ret = 0; | |
186 | int offset; | |
187 | ||
188 | usb_dbg(usbatm, "%s entered\n", __func__); | |
189 | ||
190 | if (!(buffer = (unsigned char *)__get_free_page(GFP_KERNEL))) { | |
191 | ret = -ENOMEM; | |
192 | usb_dbg(usbatm, "%s: no memory for buffer!\n", __func__); | |
193 | goto out; | |
194 | } | |
195 | ||
196 | if (!(intf = usb_ifnum_to_if(usb_dev, 2))) { | |
197 | ret = -ENODEV; | |
198 | usb_dbg(usbatm, "%s: interface not found!\n", __func__); | |
199 | goto out_free; | |
200 | } | |
201 | ||
202 | /* URB 7 */ | |
203 | if (dl_512_first) { /* some modems need a read before writing the firmware */ | |
204 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
205 | buffer, 0x200, &actual_length, 2000); | |
206 | ||
207 | if (ret < 0 && ret != -ETIMEDOUT) | |
208 | usb_dbg(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret); | |
209 | else | |
210 | usb_dbg(usbatm, "%s: BLOCK0 downloaded (%d bytes)\n", __func__, ret); | |
211 | } | |
212 | ||
213 | /* URB 8 : both leds are static green */ | |
214 | for (offset = 0; offset < fw1->size; offset += PAGE_SIZE) { | |
215 | int thislen = min_t(int, PAGE_SIZE, fw1->size - offset); | |
216 | memcpy(buffer, fw1->data + offset, thislen); | |
217 | ||
218 | ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
219 | buffer, thislen, &actual_length, DATA_TIMEOUT); | |
220 | ||
221 | if (ret < 0) { | |
222 | usb_dbg(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret); | |
223 | goto out_free; | |
224 | } | |
225 | usb_dbg(usbatm, "%s: BLOCK1 uploaded (%zu bytes)\n", __func__, fw1->size); | |
226 | } | |
227 | ||
228 | /* USB led blinking green, ADSL led off */ | |
229 | ||
230 | /* URB 11 */ | |
231 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
232 | buffer, 0x200, &actual_length, DATA_TIMEOUT); | |
1da177e4 | 233 | |
1da177e4 | 234 | if (ret < 0) { |
48da7267 DS |
235 | usb_dbg(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret); |
236 | goto out_free; | |
1da177e4 | 237 | } |
48da7267 | 238 | usb_dbg(usbatm, "%s: BLOCK2 downloaded (%d bytes)\n", __func__, actual_length); |
1da177e4 | 239 | |
48da7267 DS |
240 | /* URBs 12 to 139 - USB led blinking green, ADSL led off */ |
241 | for (offset = 0; offset < fw2->size; offset += PAGE_SIZE) { | |
242 | int thislen = min_t(int, PAGE_SIZE, fw2->size - offset); | |
243 | memcpy(buffer, fw2->data + offset, thislen); | |
244 | ||
245 | ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
246 | buffer, thislen, &actual_length, DATA_TIMEOUT); | |
247 | ||
248 | if (ret < 0) { | |
249 | usb_dbg(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret); | |
250 | goto out_free; | |
251 | } | |
252 | } | |
253 | usb_dbg(usbatm, "%s: BLOCK3 uploaded (%zu bytes)\n", __func__, fw2->size); | |
254 | ||
255 | /* USB led static green, ADSL led static red */ | |
256 | ||
257 | /* URB 142 */ | |
258 | ret = usb_bulk_msg(usb_dev, usb_rcvbulkpipe(usb_dev, ENDPOINT_FIRMWARE), | |
259 | buffer, 0x200, &actual_length, DATA_TIMEOUT); | |
260 | ||
261 | if (ret < 0) { | |
262 | usb_dbg(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret); | |
263 | goto out_free; | |
264 | } | |
265 | ||
266 | /* success */ | |
267 | usb_dbg(usbatm, "%s: BLOCK4 downloaded (%d bytes)\n", __func__, actual_length); | |
268 | ||
269 | /* Delay to allow firmware to start up. We can do this here | |
270 | because we're in our own kernel thread anyway. */ | |
271 | msleep_interruptible(1000); | |
272 | ||
273 | /* Enable software buffering, if requested */ | |
274 | if (sw_buffering) | |
275 | speedtch_set_swbuff(instance, 1); | |
276 | ||
277 | /* Magic spell; don't ask us what this does */ | |
278 | speedtch_test_sequence(instance); | |
279 | ||
280 | ret = 0; | |
281 | ||
282 | out_free: | |
283 | free_page((unsigned long)buffer); | |
284 | out: | |
285 | return ret; | |
1da177e4 LT |
286 | } |
287 | ||
48da7267 DS |
288 | static int speedtch_find_firmware(struct usb_interface *intf, int phase, |
289 | const struct firmware **fw_p) | |
1da177e4 | 290 | { |
48da7267 DS |
291 | struct device *dev = &intf->dev; |
292 | const u16 bcdDevice = le16_to_cpu(interface_to_usbdev(intf)->descriptor.bcdDevice); | |
293 | const u8 major_revision = bcdDevice >> 8; | |
294 | const u8 minor_revision = bcdDevice & 0xff; | |
295 | char buf[24]; | |
1da177e4 | 296 | |
48da7267 DS |
297 | sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision); |
298 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
1da177e4 | 299 | |
48da7267 DS |
300 | if (request_firmware(fw_p, buf, dev)) { |
301 | sprintf(buf, "speedtch-%d.bin.%x", phase, major_revision); | |
302 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
1da177e4 | 303 | |
48da7267 DS |
304 | if (request_firmware(fw_p, buf, dev)) { |
305 | sprintf(buf, "speedtch-%d.bin", phase); | |
306 | dev_dbg(dev, "%s: looking for %s\n", __func__, buf); | |
307 | ||
308 | if (request_firmware(fw_p, buf, dev)) { | |
309 | dev_warn(dev, "no stage %d firmware found!\n", phase); | |
310 | return -ENOENT; | |
311 | } | |
312 | } | |
1da177e4 LT |
313 | } |
314 | ||
48da7267 | 315 | dev_info(dev, "found stage %d firmware %s\n", phase, buf); |
1da177e4 | 316 | |
48da7267 DS |
317 | return 0; |
318 | } | |
319 | ||
320 | static int speedtch_heavy_init(struct usbatm_data *usbatm, struct usb_interface *intf) | |
321 | { | |
322 | const struct firmware *fw1, *fw2; | |
323 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
324 | int ret; | |
325 | ||
326 | if ((ret = speedtch_find_firmware(intf, 1, &fw1)) < 0) | |
327 | return ret; | |
328 | ||
329 | if ((ret = speedtch_find_firmware(intf, 2, &fw2)) < 0) { | |
330 | release_firmware(fw1); | |
331 | return ret; | |
1da177e4 | 332 | } |
1da177e4 | 333 | |
48da7267 DS |
334 | ret = speedtch_upload_firmware(instance, fw1, fw2); |
335 | ||
336 | release_firmware(fw2); | |
337 | release_firmware(fw1); | |
1da177e4 | 338 | |
48da7267 | 339 | return ret; |
1da177e4 LT |
340 | } |
341 | ||
48da7267 DS |
342 | |
343 | /********** | |
344 | ** ATM ** | |
345 | **********/ | |
346 | ||
347 | static int speedtch_read_status(struct speedtch_instance_data *instance) | |
1da177e4 | 348 | { |
48da7267 DS |
349 | struct usbatm_data *usbatm = instance->usbatm; |
350 | struct usb_device *usb_dev = usbatm->usb_dev; | |
351 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
352 | int ret; |
353 | ||
354 | memset(buf, 0, TOTAL); | |
355 | ||
48da7267 | 356 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
357 | 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, |
358 | CTRL_TIMEOUT); | |
359 | if (ret < 0) { | |
48da7267 | 360 | atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__); |
1da177e4 LT |
361 | return ret; |
362 | } | |
363 | ||
48da7267 | 364 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
365 | 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, |
366 | CTRL_TIMEOUT); | |
367 | if (ret < 0) { | |
48da7267 | 368 | atm_dbg(usbatm, "%s: MSG B failed\n", __func__); |
1da177e4 LT |
369 | return ret; |
370 | } | |
371 | ||
48da7267 | 372 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
373 | 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d, |
374 | CTRL_TIMEOUT); | |
375 | if (ret < 0) { | |
48da7267 | 376 | atm_dbg(usbatm, "%s: MSG D failed\n", __func__); |
1da177e4 LT |
377 | return ret; |
378 | } | |
379 | ||
48da7267 | 380 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
381 | 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e, |
382 | CTRL_TIMEOUT); | |
383 | if (ret < 0) { | |
48da7267 | 384 | atm_dbg(usbatm, "%s: MSG E failed\n", __func__); |
1da177e4 LT |
385 | return ret; |
386 | } | |
387 | ||
48da7267 | 388 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
389 | 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f, |
390 | CTRL_TIMEOUT); | |
391 | if (ret < 0) { | |
48da7267 | 392 | atm_dbg(usbatm, "%s: MSG F failed\n", __func__); |
1da177e4 LT |
393 | return ret; |
394 | } | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
48da7267 | 399 | static int speedtch_start_synchro(struct speedtch_instance_data *instance) |
1da177e4 | 400 | { |
48da7267 DS |
401 | struct usbatm_data *usbatm = instance->usbatm; |
402 | struct usb_device *usb_dev = usbatm->usb_dev; | |
403 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
404 | int ret; |
405 | ||
48da7267 DS |
406 | atm_dbg(usbatm, "%s entered\n", __func__); |
407 | ||
408 | memset(buf, 0, 2); | |
409 | ||
410 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
411 | 0x12, 0xc0, 0x04, 0x00, | |
412 | buf, 2, CTRL_TIMEOUT); | |
413 | ||
414 | if (ret < 0) | |
415 | atm_warn(usbatm, "failed to start ADSL synchronisation: %d\n", ret); | |
416 | else | |
417 | atm_dbg(usbatm, "%s: modem prodded. %d bytes returned: %02x %02x\n", | |
418 | __func__, ret, buf[0], buf[1]); | |
419 | ||
420 | return ret; | |
421 | } | |
422 | ||
423 | static void speedtch_check_status(struct speedtch_instance_data *instance) | |
424 | { | |
425 | struct usbatm_data *usbatm = instance->usbatm; | |
426 | struct atm_dev *atm_dev = usbatm->atm_dev; | |
427 | unsigned char *buf = instance->scratch_buffer; | |
1a7aad15 DS |
428 | int down_speed, up_speed, ret; |
429 | unsigned char status; | |
48da7267 DS |
430 | |
431 | atm_dbg(usbatm, "%s entered\n", __func__); | |
432 | ||
433 | ret = speedtch_read_status(instance); | |
434 | if (ret < 0) { | |
435 | atm_warn(usbatm, "error %d fetching device status\n", ret); | |
cd5c08fb | 436 | instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY); |
1da177e4 LT |
437 | return; |
438 | } | |
439 | ||
cd5c08fb | 440 | instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY); |
48da7267 | 441 | |
1a7aad15 | 442 | status = buf[OFFSET_7]; |
1da177e4 | 443 | |
1a7aad15 DS |
444 | atm_dbg(usbatm, "%s: line state %02x\n", __func__, status); |
445 | ||
446 | if ((status != instance->last_status) || !status) { | |
447 | switch (status) { | |
448 | case 0: | |
48da7267 | 449 | atm_dev->signal = ATM_PHY_SIG_LOST; |
1a7aad15 | 450 | if (instance->last_status) |
52fbae2a | 451 | atm_info(usbatm, "ADSL line is down\n"); |
1a7aad15 | 452 | /* It may never resync again unless we ask it to... */ |
48da7267 | 453 | ret = speedtch_start_synchro(instance); |
1a7aad15 | 454 | break; |
1da177e4 | 455 | |
1a7aad15 | 456 | case 0x08: |
48da7267 | 457 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; |
52fbae2a | 458 | atm_info(usbatm, "ADSL line is blocked?\n"); |
1a7aad15 | 459 | break; |
1da177e4 | 460 | |
1a7aad15 | 461 | case 0x10: |
48da7267 | 462 | atm_dev->signal = ATM_PHY_SIG_LOST; |
52fbae2a | 463 | atm_info(usbatm, "ADSL line is synchronising\n"); |
1a7aad15 | 464 | break; |
1da177e4 | 465 | |
1a7aad15 DS |
466 | case 0x20: |
467 | down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8) | |
1da177e4 | 468 | | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24); |
1a7aad15 | 469 | up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8) |
1da177e4 LT |
470 | | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24); |
471 | ||
48da7267 | 472 | if (!(down_speed & 0x0000ffff) && !(up_speed & 0x0000ffff)) { |
1da177e4 LT |
473 | down_speed >>= 16; |
474 | up_speed >>= 16; | |
475 | } | |
1da177e4 | 476 | |
48da7267 DS |
477 | atm_dev->link_rate = down_speed * 1000 / 424; |
478 | atm_dev->signal = ATM_PHY_SIG_FOUND; | |
479 | ||
480 | atm_info(usbatm, | |
322a95bc | 481 | "ADSL line is up (%d kb/s down | %d kb/s up)\n", |
48da7267 | 482 | down_speed, up_speed); |
1a7aad15 | 483 | break; |
1da177e4 | 484 | |
1a7aad15 | 485 | default: |
48da7267 | 486 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; |
1a7aad15 DS |
487 | atm_info(usbatm, "Unknown line state %02x\n", status); |
488 | break; | |
1da177e4 | 489 | } |
1a7aad15 DS |
490 | |
491 | instance->last_status = status; | |
1da177e4 LT |
492 | } |
493 | } | |
494 | ||
48da7267 | 495 | static void speedtch_status_poll(unsigned long data) |
1da177e4 LT |
496 | { |
497 | struct speedtch_instance_data *instance = (void *)data; | |
498 | ||
48da7267 DS |
499 | schedule_work(&instance->status_checker); |
500 | ||
501 | /* The following check is racy, but the race is harmless */ | |
502 | if (instance->poll_delay < MAX_POLL_DELAY) | |
503 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(instance->poll_delay)); | |
504 | else | |
52fbae2a | 505 | atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n"); |
1da177e4 LT |
506 | } |
507 | ||
48da7267 | 508 | static void speedtch_resubmit_int(unsigned long data) |
1da177e4 | 509 | { |
48da7267 DS |
510 | struct speedtch_instance_data *instance = (void *)data; |
511 | struct urb *int_urb = instance->int_urb; | |
512 | int ret; | |
1da177e4 | 513 | |
48da7267 | 514 | atm_dbg(instance->usbatm, "%s entered\n", __func__); |
1da177e4 | 515 | |
48da7267 DS |
516 | if (int_urb) { |
517 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
518 | if (!ret) | |
519 | schedule_work(&instance->status_checker); | |
520 | else { | |
521 | atm_dbg(instance->usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); | |
522 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 | 523 | } |
1da177e4 | 524 | } |
48da7267 | 525 | } |
1da177e4 | 526 | |
48da7267 DS |
527 | static void speedtch_handle_int(struct urb *int_urb, struct pt_regs *regs) |
528 | { | |
529 | struct speedtch_instance_data *instance = int_urb->context; | |
530 | struct usbatm_data *usbatm = instance->usbatm; | |
531 | unsigned int count = int_urb->actual_length; | |
532 | int ret = int_urb->status; | |
1da177e4 | 533 | |
48da7267 DS |
534 | /* The magic interrupt for "up state" */ |
535 | const static unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 }; | |
536 | /* The magic interrupt for "down state" */ | |
537 | const static unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 }; | |
538 | ||
539 | atm_dbg(usbatm, "%s entered\n", __func__); | |
1da177e4 LT |
540 | |
541 | if (ret < 0) { | |
48da7267 DS |
542 | atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, ret); |
543 | goto fail; | |
1da177e4 | 544 | } |
1da177e4 | 545 | |
48da7267 DS |
546 | if ((count == 6) && !memcmp(up_int, instance->int_data, 6)) { |
547 | del_timer(&instance->status_checker.timer); | |
52fbae2a | 548 | atm_info(usbatm, "DSL line goes up\n"); |
48da7267 | 549 | } else if ((count == 6) && !memcmp(down_int, instance->int_data, 6)) { |
52fbae2a | 550 | atm_info(usbatm, "DSL line goes down\n"); |
48da7267 DS |
551 | } else { |
552 | int i; | |
1da177e4 | 553 | |
48da7267 DS |
554 | atm_dbg(usbatm, "%s: unknown interrupt packet of length %d:", __func__, count); |
555 | for (i = 0; i < count; i++) | |
556 | printk(" %02x", instance->int_data[i]); | |
557 | printk("\n"); | |
558 | goto fail; | |
559 | } | |
1da177e4 | 560 | |
48da7267 DS |
561 | if ((int_urb = instance->int_urb)) { |
562 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
563 | schedule_work(&instance->status_checker); | |
1da177e4 | 564 | if (ret < 0) { |
48da7267 DS |
565 | atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); |
566 | goto fail; | |
1da177e4 LT |
567 | } |
568 | } | |
1da177e4 | 569 | |
1da177e4 LT |
570 | return; |
571 | ||
48da7267 DS |
572 | fail: |
573 | if ((int_urb = instance->int_urb)) | |
574 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 LT |
575 | } |
576 | ||
48da7267 | 577 | static int speedtch_atm_start(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 578 | { |
48da7267 DS |
579 | struct usb_device *usb_dev = usbatm->usb_dev; |
580 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
581 | int i, ret; | |
582 | unsigned char mac_str[13]; | |
1da177e4 | 583 | |
48da7267 | 584 | atm_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 585 | |
48da7267 DS |
586 | if ((ret = usb_set_interface(usb_dev, 1, altsetting)) < 0) { |
587 | atm_dbg(usbatm, "%s: usb_set_interface returned %d!\n", __func__, ret); | |
588 | return ret; | |
1da177e4 LT |
589 | } |
590 | ||
48da7267 DS |
591 | /* Set MAC address, it is stored in the serial number */ |
592 | memset(atm_dev->esi, 0, sizeof(atm_dev->esi)); | |
593 | if (usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) { | |
594 | for (i = 0; i < 6; i++) | |
595 | atm_dev->esi[i] = (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1])); | |
596 | } | |
1da177e4 | 597 | |
48da7267 DS |
598 | /* Start modem synchronisation */ |
599 | ret = speedtch_start_synchro(instance); | |
1da177e4 | 600 | |
48da7267 DS |
601 | /* Set up interrupt endpoint */ |
602 | if (instance->int_urb) { | |
603 | ret = usb_submit_urb(instance->int_urb, GFP_KERNEL); | |
604 | if (ret < 0) { | |
605 | /* Doesn't matter; we'll poll anyway */ | |
606 | atm_dbg(usbatm, "%s: submission of interrupt URB failed (%d)!\n", __func__, ret); | |
607 | usb_free_urb(instance->int_urb); | |
608 | instance->int_urb = NULL; | |
1da177e4 | 609 | } |
1da177e4 LT |
610 | } |
611 | ||
48da7267 DS |
612 | /* Start status polling */ |
613 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(1000)); | |
1da177e4 | 614 | |
1da177e4 LT |
615 | return 0; |
616 | } | |
1da177e4 | 617 | |
48da7267 | 618 | static void speedtch_atm_stop(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 619 | { |
48da7267 DS |
620 | struct speedtch_instance_data *instance = usbatm->driver_data; |
621 | struct urb *int_urb = instance->int_urb; | |
622 | ||
623 | atm_dbg(usbatm, "%s entered\n", __func__); | |
624 | ||
625 | del_timer_sync(&instance->status_checker.timer); | |
626 | ||
627 | /* | |
628 | * Since resubmit_timer and int_urb can schedule themselves and | |
629 | * each other, shutting them down correctly takes some care | |
630 | */ | |
631 | instance->int_urb = NULL; /* signal shutdown */ | |
632 | mb(); | |
633 | usb_kill_urb(int_urb); | |
634 | del_timer_sync(&instance->resubmit_timer); | |
635 | /* | |
636 | * At this point, speedtch_handle_int and speedtch_resubmit_int | |
637 | * can run or be running, but instance->int_urb == NULL means that | |
638 | * they will not reschedule | |
639 | */ | |
640 | usb_kill_urb(int_urb); | |
641 | del_timer_sync(&instance->resubmit_timer); | |
642 | usb_free_urb(int_urb); | |
1da177e4 | 643 | |
48da7267 DS |
644 | flush_scheduled_work(); |
645 | } | |
1da177e4 | 646 | |
1da177e4 | 647 | |
48da7267 DS |
648 | /********** |
649 | ** USB ** | |
650 | **********/ | |
1da177e4 | 651 | |
48da7267 DS |
652 | static struct usb_device_id speedtch_usb_ids[] = { |
653 | {USB_DEVICE(0x06b9, 0x4061)}, | |
654 | {} | |
655 | }; | |
1da177e4 | 656 | |
48da7267 | 657 | MODULE_DEVICE_TABLE(usb, speedtch_usb_ids); |
1da177e4 | 658 | |
48da7267 | 659 | static int speedtch_usb_probe(struct usb_interface *, const struct usb_device_id *); |
1da177e4 | 660 | |
48da7267 DS |
661 | static struct usb_driver speedtch_usb_driver = { |
662 | .owner = THIS_MODULE, | |
663 | .name = speedtch_driver_name, | |
664 | .probe = speedtch_usb_probe, | |
665 | .disconnect = usbatm_usb_disconnect, | |
666 | .id_table = speedtch_usb_ids | |
667 | }; | |
1da177e4 | 668 | |
48da7267 DS |
669 | static void speedtch_release_interfaces(struct usb_device *usb_dev, int num_interfaces) { |
670 | struct usb_interface *cur_intf; | |
671 | int i; | |
1da177e4 | 672 | |
48da7267 DS |
673 | for(i = 0; i < num_interfaces; i++) |
674 | if ((cur_intf = usb_ifnum_to_if(usb_dev, i))) { | |
675 | usb_set_intfdata(cur_intf, NULL); | |
676 | usb_driver_release_interface(&speedtch_usb_driver, cur_intf); | |
677 | } | |
1da177e4 LT |
678 | } |
679 | ||
48da7267 DS |
680 | static int speedtch_bind(struct usbatm_data *usbatm, |
681 | struct usb_interface *intf, | |
682 | const struct usb_device_id *id, | |
683 | int *need_heavy_init) | |
1da177e4 | 684 | { |
48da7267 DS |
685 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
686 | struct usb_interface *cur_intf; | |
687 | struct speedtch_instance_data *instance; | |
688 | int ifnum = intf->altsetting->desc.bInterfaceNumber; | |
689 | int num_interfaces = usb_dev->actconfig->desc.bNumInterfaces; | |
690 | int i, ret; | |
1da177e4 | 691 | |
48da7267 | 692 | usb_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 693 | |
48da7267 DS |
694 | if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) { |
695 | usb_dbg(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass); | |
1da177e4 LT |
696 | return -ENODEV; |
697 | } | |
698 | ||
48da7267 | 699 | /* claim all interfaces */ |
1da177e4 | 700 | |
48da7267 DS |
701 | for (i=0; i < num_interfaces; i++) { |
702 | cur_intf = usb_ifnum_to_if(usb_dev, i); | |
1da177e4 | 703 | |
48da7267 DS |
704 | if ((i != ifnum) && cur_intf) { |
705 | ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm); | |
1da177e4 | 706 | |
48da7267 DS |
707 | if (ret < 0) { |
708 | usb_dbg(usbatm, "%s: failed to claim interface %d (%d)\n", __func__, i, ret); | |
709 | speedtch_release_interfaces(usb_dev, i); | |
710 | return ret; | |
711 | } | |
712 | } | |
713 | } | |
1da177e4 | 714 | |
1da177e4 | 715 | instance = kmalloc(sizeof(*instance), GFP_KERNEL); |
48da7267 | 716 | |
1da177e4 | 717 | if (!instance) { |
48da7267 DS |
718 | usb_dbg(usbatm, "%s: no memory for instance data!\n", __func__); |
719 | ret = -ENOMEM; | |
720 | goto fail_release; | |
1da177e4 LT |
721 | } |
722 | ||
723 | memset(instance, 0, sizeof(struct speedtch_instance_data)); | |
724 | ||
48da7267 | 725 | instance->usbatm = usbatm; |
1da177e4 | 726 | |
48da7267 | 727 | INIT_WORK(&instance->status_checker, (void *)speedtch_check_status, instance); |
1da177e4 | 728 | |
48da7267 DS |
729 | instance->status_checker.timer.function = speedtch_status_poll; |
730 | instance->status_checker.timer.data = (unsigned long)instance; | |
1a7aad15 | 731 | instance->last_status = 0xff; |
48da7267 | 732 | instance->poll_delay = MIN_POLL_DELAY; |
1da177e4 | 733 | |
48da7267 DS |
734 | init_timer(&instance->resubmit_timer); |
735 | instance->resubmit_timer.function = speedtch_resubmit_int; | |
736 | instance->resubmit_timer.data = (unsigned long)instance; | |
1da177e4 | 737 | |
48da7267 | 738 | instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); |
1da177e4 | 739 | |
48da7267 DS |
740 | if (instance->int_urb) |
741 | usb_fill_int_urb(instance->int_urb, usb_dev, | |
742 | usb_rcvintpipe(usb_dev, ENDPOINT_INT), | |
743 | instance->int_data, sizeof(instance->int_data), | |
744 | speedtch_handle_int, instance, 50); | |
745 | else | |
746 | usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__); | |
1da177e4 | 747 | |
48da7267 DS |
748 | /* check whether the modem already seems to be alive */ |
749 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
750 | 0x12, 0xc0, 0x07, 0x00, | |
751 | instance->scratch_buffer + OFFSET_7, SIZE_7, 500); | |
1da177e4 | 752 | |
48da7267 | 753 | *need_heavy_init = (ret != SIZE_7); |
1da177e4 | 754 | |
48da7267 DS |
755 | usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, need_heavy_init ? "not" : "already"); |
756 | ||
757 | if (*need_heavy_init) | |
758 | if ((ret = usb_reset_device(usb_dev)) < 0) | |
759 | goto fail_free; | |
1da177e4 | 760 | |
48da7267 | 761 | usbatm->driver_data = instance; |
1da177e4 LT |
762 | |
763 | return 0; | |
764 | ||
48da7267 DS |
765 | fail_free: |
766 | usb_free_urb(instance->int_urb); | |
1da177e4 | 767 | kfree(instance); |
48da7267 DS |
768 | fail_release: |
769 | speedtch_release_interfaces(usb_dev, num_interfaces); | |
770 | return ret; | |
1da177e4 LT |
771 | } |
772 | ||
48da7267 | 773 | static void speedtch_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) |
1da177e4 | 774 | { |
48da7267 DS |
775 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
776 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
1da177e4 | 777 | |
48da7267 | 778 | usb_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 779 | |
48da7267 DS |
780 | speedtch_release_interfaces(usb_dev, usb_dev->actconfig->desc.bNumInterfaces); |
781 | usb_free_urb(instance->int_urb); | |
782 | kfree(instance); | |
1da177e4 LT |
783 | } |
784 | ||
48da7267 | 785 | |
1da177e4 LT |
786 | /*********** |
787 | ** init ** | |
788 | ***********/ | |
789 | ||
48da7267 DS |
790 | static struct usbatm_driver speedtch_usbatm_driver = { |
791 | .owner = THIS_MODULE, | |
792 | .driver_name = speedtch_driver_name, | |
793 | .bind = speedtch_bind, | |
794 | .heavy_init = speedtch_heavy_init, | |
795 | .unbind = speedtch_unbind, | |
796 | .atm_start = speedtch_atm_start, | |
797 | .atm_stop = speedtch_atm_stop, | |
798 | .in = ENDPOINT_DATA, | |
799 | .out = ENDPOINT_DATA | |
800 | }; | |
801 | ||
802 | static int speedtch_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
803 | { | |
804 | return usbatm_usb_probe(intf, id, &speedtch_usbatm_driver); | |
805 | } | |
806 | ||
1da177e4 LT |
807 | static int __init speedtch_usb_init(void) |
808 | { | |
48da7267 | 809 | dbg("%s: driver version %s", __func__, DRIVER_VERSION); |
1da177e4 LT |
810 | |
811 | return usb_register(&speedtch_usb_driver); | |
812 | } | |
813 | ||
814 | static void __exit speedtch_usb_cleanup(void) | |
815 | { | |
48da7267 | 816 | dbg("%s", __func__); |
1da177e4 LT |
817 | |
818 | usb_deregister(&speedtch_usb_driver); | |
819 | } | |
820 | ||
821 | module_init(speedtch_usb_init); | |
822 | module_exit(speedtch_usb_cleanup); | |
823 | ||
824 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
825 | MODULE_DESCRIPTION(DRIVER_DESC); | |
826 | MODULE_LICENSE("GPL"); | |
827 | MODULE_VERSION(DRIVER_VERSION); |