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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) | |
0ec3c7e8 | 208 | usb_warn(usbatm, "%s: read BLOCK0 from modem failed (%d)!\n", __func__, ret); |
48da7267 DS |
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) { | |
0ec3c7e8 | 222 | usb_err(usbatm, "%s: write BLOCK1 to modem failed (%d)!\n", __func__, ret); |
48da7267 DS |
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) { |
0ec3c7e8 | 235 | usb_err(usbatm, "%s: read BLOCK2 from modem failed (%d)!\n", __func__, ret); |
48da7267 | 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) { | |
0ec3c7e8 | 249 | usb_err(usbatm, "%s: write BLOCK3 to modem failed (%d)!\n", __func__, ret); |
48da7267 DS |
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) { | |
0ec3c7e8 | 262 | usb_err(usbatm, "%s: read BLOCK4 from modem failed (%d)!\n", __func__, ret); |
48da7267 DS |
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 | ||
0ec3c7e8 DS |
288 | static int speedtch_find_firmware(struct usbatm_data *usbatm, struct usb_interface *intf, |
289 | int phase, 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 | 297 | sprintf(buf, "speedtch-%d.bin.%x.%02x", phase, major_revision, minor_revision); |
0ec3c7e8 | 298 | usb_dbg(usbatm, "%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); | |
0ec3c7e8 | 302 | usb_dbg(usbatm, "%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); | |
0ec3c7e8 | 306 | usb_dbg(usbatm, "%s: looking for %s\n", __func__, buf); |
48da7267 DS |
307 | |
308 | if (request_firmware(fw_p, buf, dev)) { | |
0ec3c7e8 | 309 | usb_err(usbatm, "%s: no stage %d firmware found!\n", __func__, phase); |
48da7267 DS |
310 | return -ENOENT; |
311 | } | |
312 | } | |
1da177e4 LT |
313 | } |
314 | ||
0ec3c7e8 | 315 | usb_info(usbatm, "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 | ||
0ec3c7e8 DS |
326 | if ((ret = speedtch_find_firmware(usbatm, intf, 1, &fw1)) < 0) |
327 | return ret; | |
48da7267 | 328 | |
0ec3c7e8 | 329 | if ((ret = speedtch_find_firmware(usbatm, intf, 2, &fw2)) < 0) { |
48da7267 DS |
330 | release_firmware(fw1); |
331 | return ret; | |
1da177e4 | 332 | } |
1da177e4 | 333 | |
0ec3c7e8 DS |
334 | if ((ret = speedtch_upload_firmware(instance, fw1, fw2)) < 0) |
335 | usb_err(usbatm, "%s: firmware upload failed (%d)!\n", __func__, ret); | |
48da7267 DS |
336 | |
337 | release_firmware(fw2); | |
338 | release_firmware(fw1); | |
1da177e4 | 339 | |
48da7267 | 340 | return ret; |
1da177e4 LT |
341 | } |
342 | ||
48da7267 DS |
343 | |
344 | /********** | |
345 | ** ATM ** | |
346 | **********/ | |
347 | ||
348 | static int speedtch_read_status(struct speedtch_instance_data *instance) | |
1da177e4 | 349 | { |
48da7267 DS |
350 | struct usbatm_data *usbatm = instance->usbatm; |
351 | struct usb_device *usb_dev = usbatm->usb_dev; | |
352 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
353 | int ret; |
354 | ||
355 | memset(buf, 0, TOTAL); | |
356 | ||
48da7267 | 357 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
358 | 0x12, 0xc0, 0x07, 0x00, buf + OFFSET_7, SIZE_7, |
359 | CTRL_TIMEOUT); | |
360 | if (ret < 0) { | |
48da7267 | 361 | atm_dbg(usbatm, "%s: MSG 7 failed\n", __func__); |
1da177e4 LT |
362 | return ret; |
363 | } | |
364 | ||
48da7267 | 365 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
366 | 0x12, 0xc0, 0x0b, 0x00, buf + OFFSET_b, SIZE_b, |
367 | CTRL_TIMEOUT); | |
368 | if (ret < 0) { | |
48da7267 | 369 | atm_dbg(usbatm, "%s: MSG B failed\n", __func__); |
1da177e4 LT |
370 | return ret; |
371 | } | |
372 | ||
48da7267 | 373 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
374 | 0x12, 0xc0, 0x0d, 0x00, buf + OFFSET_d, SIZE_d, |
375 | CTRL_TIMEOUT); | |
376 | if (ret < 0) { | |
48da7267 | 377 | atm_dbg(usbatm, "%s: MSG D failed\n", __func__); |
1da177e4 LT |
378 | return ret; |
379 | } | |
380 | ||
48da7267 | 381 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
382 | 0x01, 0xc0, 0x0e, 0x00, buf + OFFSET_e, SIZE_e, |
383 | CTRL_TIMEOUT); | |
384 | if (ret < 0) { | |
48da7267 | 385 | atm_dbg(usbatm, "%s: MSG E failed\n", __func__); |
1da177e4 LT |
386 | return ret; |
387 | } | |
388 | ||
48da7267 | 389 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), |
1da177e4 LT |
390 | 0x01, 0xc0, 0x0f, 0x00, buf + OFFSET_f, SIZE_f, |
391 | CTRL_TIMEOUT); | |
392 | if (ret < 0) { | |
48da7267 | 393 | atm_dbg(usbatm, "%s: MSG F failed\n", __func__); |
1da177e4 LT |
394 | return ret; |
395 | } | |
396 | ||
397 | return 0; | |
398 | } | |
399 | ||
48da7267 | 400 | static int speedtch_start_synchro(struct speedtch_instance_data *instance) |
1da177e4 | 401 | { |
48da7267 DS |
402 | struct usbatm_data *usbatm = instance->usbatm; |
403 | struct usb_device *usb_dev = usbatm->usb_dev; | |
404 | unsigned char *buf = instance->scratch_buffer; | |
1da177e4 LT |
405 | int ret; |
406 | ||
48da7267 DS |
407 | atm_dbg(usbatm, "%s entered\n", __func__); |
408 | ||
409 | memset(buf, 0, 2); | |
410 | ||
411 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
412 | 0x12, 0xc0, 0x04, 0x00, | |
413 | buf, 2, CTRL_TIMEOUT); | |
414 | ||
415 | if (ret < 0) | |
416 | atm_warn(usbatm, "failed to start ADSL synchronisation: %d\n", ret); | |
417 | else | |
418 | atm_dbg(usbatm, "%s: modem prodded. %d bytes returned: %02x %02x\n", | |
419 | __func__, ret, buf[0], buf[1]); | |
420 | ||
421 | return ret; | |
422 | } | |
423 | ||
424 | static void speedtch_check_status(struct speedtch_instance_data *instance) | |
425 | { | |
426 | struct usbatm_data *usbatm = instance->usbatm; | |
427 | struct atm_dev *atm_dev = usbatm->atm_dev; | |
428 | unsigned char *buf = instance->scratch_buffer; | |
1a7aad15 DS |
429 | int down_speed, up_speed, ret; |
430 | unsigned char status; | |
48da7267 | 431 | |
0ec3c7e8 | 432 | #ifdef VERBOSE_DEBUG |
48da7267 | 433 | atm_dbg(usbatm, "%s entered\n", __func__); |
0ec3c7e8 | 434 | #endif |
48da7267 DS |
435 | |
436 | ret = speedtch_read_status(instance); | |
437 | if (ret < 0) { | |
438 | atm_warn(usbatm, "error %d fetching device status\n", ret); | |
cd5c08fb | 439 | instance->poll_delay = min(2 * instance->poll_delay, MAX_POLL_DELAY); |
1da177e4 LT |
440 | return; |
441 | } | |
442 | ||
cd5c08fb | 443 | instance->poll_delay = max(instance->poll_delay / 2, MIN_POLL_DELAY); |
48da7267 | 444 | |
1a7aad15 | 445 | status = buf[OFFSET_7]; |
1da177e4 | 446 | |
1a7aad15 | 447 | if ((status != instance->last_status) || !status) { |
0ec3c7e8 DS |
448 | atm_dbg(usbatm, "%s: line state 0x%02x\n", __func__, status); |
449 | ||
1a7aad15 DS |
450 | switch (status) { |
451 | case 0: | |
48da7267 | 452 | atm_dev->signal = ATM_PHY_SIG_LOST; |
1a7aad15 | 453 | if (instance->last_status) |
52fbae2a | 454 | atm_info(usbatm, "ADSL line is down\n"); |
1a7aad15 | 455 | /* It may never resync again unless we ask it to... */ |
48da7267 | 456 | ret = speedtch_start_synchro(instance); |
1a7aad15 | 457 | break; |
1da177e4 | 458 | |
1a7aad15 | 459 | case 0x08: |
48da7267 | 460 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; |
52fbae2a | 461 | atm_info(usbatm, "ADSL line is blocked?\n"); |
1a7aad15 | 462 | break; |
1da177e4 | 463 | |
1a7aad15 | 464 | case 0x10: |
48da7267 | 465 | atm_dev->signal = ATM_PHY_SIG_LOST; |
52fbae2a | 466 | atm_info(usbatm, "ADSL line is synchronising\n"); |
1a7aad15 | 467 | break; |
1da177e4 | 468 | |
1a7aad15 DS |
469 | case 0x20: |
470 | down_speed = buf[OFFSET_b] | (buf[OFFSET_b + 1] << 8) | |
1da177e4 | 471 | | (buf[OFFSET_b + 2] << 16) | (buf[OFFSET_b + 3] << 24); |
1a7aad15 | 472 | up_speed = buf[OFFSET_b + 4] | (buf[OFFSET_b + 5] << 8) |
1da177e4 LT |
473 | | (buf[OFFSET_b + 6] << 16) | (buf[OFFSET_b + 7] << 24); |
474 | ||
48da7267 | 475 | if (!(down_speed & 0x0000ffff) && !(up_speed & 0x0000ffff)) { |
1da177e4 LT |
476 | down_speed >>= 16; |
477 | up_speed >>= 16; | |
478 | } | |
1da177e4 | 479 | |
48da7267 DS |
480 | atm_dev->link_rate = down_speed * 1000 / 424; |
481 | atm_dev->signal = ATM_PHY_SIG_FOUND; | |
482 | ||
483 | atm_info(usbatm, | |
322a95bc | 484 | "ADSL line is up (%d kb/s down | %d kb/s up)\n", |
48da7267 | 485 | down_speed, up_speed); |
1a7aad15 | 486 | break; |
1da177e4 | 487 | |
1a7aad15 | 488 | default: |
48da7267 | 489 | atm_dev->signal = ATM_PHY_SIG_UNKNOWN; |
0ec3c7e8 | 490 | atm_info(usbatm, "unknown line state %02x\n", status); |
1a7aad15 | 491 | break; |
1da177e4 | 492 | } |
1a7aad15 DS |
493 | |
494 | instance->last_status = status; | |
1da177e4 LT |
495 | } |
496 | } | |
497 | ||
48da7267 | 498 | static void speedtch_status_poll(unsigned long data) |
1da177e4 LT |
499 | { |
500 | struct speedtch_instance_data *instance = (void *)data; | |
501 | ||
48da7267 DS |
502 | schedule_work(&instance->status_checker); |
503 | ||
504 | /* The following check is racy, but the race is harmless */ | |
505 | if (instance->poll_delay < MAX_POLL_DELAY) | |
506 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(instance->poll_delay)); | |
507 | else | |
52fbae2a | 508 | atm_warn(instance->usbatm, "Too many failures - disabling line status polling\n"); |
1da177e4 LT |
509 | } |
510 | ||
48da7267 | 511 | static void speedtch_resubmit_int(unsigned long data) |
1da177e4 | 512 | { |
48da7267 DS |
513 | struct speedtch_instance_data *instance = (void *)data; |
514 | struct urb *int_urb = instance->int_urb; | |
515 | int ret; | |
1da177e4 | 516 | |
48da7267 | 517 | atm_dbg(instance->usbatm, "%s entered\n", __func__); |
1da177e4 | 518 | |
48da7267 DS |
519 | if (int_urb) { |
520 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
521 | if (!ret) | |
522 | schedule_work(&instance->status_checker); | |
523 | else { | |
524 | atm_dbg(instance->usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); | |
525 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 | 526 | } |
1da177e4 | 527 | } |
48da7267 | 528 | } |
1da177e4 | 529 | |
48da7267 DS |
530 | static void speedtch_handle_int(struct urb *int_urb, struct pt_regs *regs) |
531 | { | |
532 | struct speedtch_instance_data *instance = int_urb->context; | |
533 | struct usbatm_data *usbatm = instance->usbatm; | |
534 | unsigned int count = int_urb->actual_length; | |
535 | int ret = int_urb->status; | |
1da177e4 | 536 | |
48da7267 | 537 | /* The magic interrupt for "up state" */ |
3c6bee1d | 538 | static const unsigned char up_int[6] = { 0xa1, 0x00, 0x01, 0x00, 0x00, 0x00 }; |
48da7267 | 539 | /* The magic interrupt for "down state" */ |
3c6bee1d | 540 | static const unsigned char down_int[6] = { 0xa1, 0x00, 0x00, 0x00, 0x00, 0x00 }; |
48da7267 DS |
541 | |
542 | atm_dbg(usbatm, "%s entered\n", __func__); | |
1da177e4 LT |
543 | |
544 | if (ret < 0) { | |
48da7267 DS |
545 | atm_dbg(usbatm, "%s: nonzero urb status %d!\n", __func__, ret); |
546 | goto fail; | |
1da177e4 | 547 | } |
1da177e4 | 548 | |
48da7267 DS |
549 | if ((count == 6) && !memcmp(up_int, instance->int_data, 6)) { |
550 | del_timer(&instance->status_checker.timer); | |
52fbae2a | 551 | atm_info(usbatm, "DSL line goes up\n"); |
48da7267 | 552 | } else if ((count == 6) && !memcmp(down_int, instance->int_data, 6)) { |
52fbae2a | 553 | atm_info(usbatm, "DSL line goes down\n"); |
48da7267 DS |
554 | } else { |
555 | int i; | |
1da177e4 | 556 | |
48da7267 DS |
557 | atm_dbg(usbatm, "%s: unknown interrupt packet of length %d:", __func__, count); |
558 | for (i = 0; i < count; i++) | |
559 | printk(" %02x", instance->int_data[i]); | |
560 | printk("\n"); | |
561 | goto fail; | |
562 | } | |
1da177e4 | 563 | |
48da7267 DS |
564 | if ((int_urb = instance->int_urb)) { |
565 | ret = usb_submit_urb(int_urb, GFP_ATOMIC); | |
566 | schedule_work(&instance->status_checker); | |
1da177e4 | 567 | if (ret < 0) { |
48da7267 DS |
568 | atm_dbg(usbatm, "%s: usb_submit_urb failed with result %d\n", __func__, ret); |
569 | goto fail; | |
1da177e4 LT |
570 | } |
571 | } | |
1da177e4 | 572 | |
1da177e4 LT |
573 | return; |
574 | ||
48da7267 DS |
575 | fail: |
576 | if ((int_urb = instance->int_urb)) | |
577 | mod_timer(&instance->resubmit_timer, jiffies + msecs_to_jiffies(RESUBMIT_DELAY)); | |
1da177e4 LT |
578 | } |
579 | ||
48da7267 | 580 | static int speedtch_atm_start(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 581 | { |
48da7267 DS |
582 | struct usb_device *usb_dev = usbatm->usb_dev; |
583 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
584 | int i, ret; | |
585 | unsigned char mac_str[13]; | |
1da177e4 | 586 | |
48da7267 | 587 | atm_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 588 | |
48da7267 DS |
589 | if ((ret = usb_set_interface(usb_dev, 1, altsetting)) < 0) { |
590 | atm_dbg(usbatm, "%s: usb_set_interface returned %d!\n", __func__, ret); | |
591 | return ret; | |
1da177e4 LT |
592 | } |
593 | ||
48da7267 DS |
594 | /* Set MAC address, it is stored in the serial number */ |
595 | memset(atm_dev->esi, 0, sizeof(atm_dev->esi)); | |
596 | if (usb_string(usb_dev, usb_dev->descriptor.iSerialNumber, mac_str, sizeof(mac_str)) == 12) { | |
597 | for (i = 0; i < 6; i++) | |
598 | atm_dev->esi[i] = (hex2int(mac_str[i * 2]) * 16) + (hex2int(mac_str[i * 2 + 1])); | |
599 | } | |
1da177e4 | 600 | |
48da7267 DS |
601 | /* Start modem synchronisation */ |
602 | ret = speedtch_start_synchro(instance); | |
1da177e4 | 603 | |
48da7267 DS |
604 | /* Set up interrupt endpoint */ |
605 | if (instance->int_urb) { | |
606 | ret = usb_submit_urb(instance->int_urb, GFP_KERNEL); | |
607 | if (ret < 0) { | |
608 | /* Doesn't matter; we'll poll anyway */ | |
609 | atm_dbg(usbatm, "%s: submission of interrupt URB failed (%d)!\n", __func__, ret); | |
610 | usb_free_urb(instance->int_urb); | |
611 | instance->int_urb = NULL; | |
1da177e4 | 612 | } |
1da177e4 LT |
613 | } |
614 | ||
48da7267 DS |
615 | /* Start status polling */ |
616 | mod_timer(&instance->status_checker.timer, jiffies + msecs_to_jiffies(1000)); | |
1da177e4 | 617 | |
1da177e4 LT |
618 | return 0; |
619 | } | |
1da177e4 | 620 | |
48da7267 | 621 | static void speedtch_atm_stop(struct usbatm_data *usbatm, struct atm_dev *atm_dev) |
1da177e4 | 622 | { |
48da7267 DS |
623 | struct speedtch_instance_data *instance = usbatm->driver_data; |
624 | struct urb *int_urb = instance->int_urb; | |
625 | ||
626 | atm_dbg(usbatm, "%s entered\n", __func__); | |
627 | ||
628 | del_timer_sync(&instance->status_checker.timer); | |
629 | ||
630 | /* | |
631 | * Since resubmit_timer and int_urb can schedule themselves and | |
632 | * each other, shutting them down correctly takes some care | |
633 | */ | |
634 | instance->int_urb = NULL; /* signal shutdown */ | |
635 | mb(); | |
636 | usb_kill_urb(int_urb); | |
637 | del_timer_sync(&instance->resubmit_timer); | |
638 | /* | |
639 | * At this point, speedtch_handle_int and speedtch_resubmit_int | |
640 | * can run or be running, but instance->int_urb == NULL means that | |
641 | * they will not reschedule | |
642 | */ | |
643 | usb_kill_urb(int_urb); | |
644 | del_timer_sync(&instance->resubmit_timer); | |
645 | usb_free_urb(int_urb); | |
1da177e4 | 646 | |
48da7267 DS |
647 | flush_scheduled_work(); |
648 | } | |
1da177e4 | 649 | |
1da177e4 | 650 | |
48da7267 DS |
651 | /********** |
652 | ** USB ** | |
653 | **********/ | |
1da177e4 | 654 | |
48da7267 DS |
655 | static struct usb_device_id speedtch_usb_ids[] = { |
656 | {USB_DEVICE(0x06b9, 0x4061)}, | |
657 | {} | |
658 | }; | |
1da177e4 | 659 | |
48da7267 | 660 | MODULE_DEVICE_TABLE(usb, speedtch_usb_ids); |
1da177e4 | 661 | |
48da7267 | 662 | static int speedtch_usb_probe(struct usb_interface *, const struct usb_device_id *); |
1da177e4 | 663 | |
48da7267 | 664 | static struct usb_driver speedtch_usb_driver = { |
48da7267 DS |
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 | |
0ec3c7e8 DS |
696 | /* sanity checks */ |
697 | ||
48da7267 | 698 | if (usb_dev->descriptor.bDeviceClass != USB_CLASS_VENDOR_SPEC) { |
0ec3c7e8 | 699 | usb_err(usbatm, "%s: wrong device class %d\n", __func__, usb_dev->descriptor.bDeviceClass); |
1da177e4 LT |
700 | return -ENODEV; |
701 | } | |
702 | ||
48da7267 | 703 | /* claim all interfaces */ |
1da177e4 | 704 | |
48da7267 DS |
705 | for (i=0; i < num_interfaces; i++) { |
706 | cur_intf = usb_ifnum_to_if(usb_dev, i); | |
1da177e4 | 707 | |
48da7267 DS |
708 | if ((i != ifnum) && cur_intf) { |
709 | ret = usb_driver_claim_interface(&speedtch_usb_driver, cur_intf, usbatm); | |
1da177e4 | 710 | |
48da7267 | 711 | if (ret < 0) { |
0ec3c7e8 | 712 | usb_err(usbatm, "%s: failed to claim interface %2d (%d)!\n", __func__, i, ret); |
48da7267 DS |
713 | speedtch_release_interfaces(usb_dev, i); |
714 | return ret; | |
715 | } | |
716 | } | |
717 | } | |
1da177e4 | 718 | |
1da177e4 | 719 | instance = kmalloc(sizeof(*instance), GFP_KERNEL); |
48da7267 | 720 | |
1da177e4 | 721 | if (!instance) { |
0ec3c7e8 | 722 | usb_err(usbatm, "%s: no memory for instance data!\n", __func__); |
48da7267 DS |
723 | ret = -ENOMEM; |
724 | goto fail_release; | |
1da177e4 LT |
725 | } |
726 | ||
727 | memset(instance, 0, sizeof(struct speedtch_instance_data)); | |
728 | ||
48da7267 | 729 | instance->usbatm = usbatm; |
1da177e4 | 730 | |
48da7267 | 731 | INIT_WORK(&instance->status_checker, (void *)speedtch_check_status, instance); |
1da177e4 | 732 | |
48da7267 DS |
733 | instance->status_checker.timer.function = speedtch_status_poll; |
734 | instance->status_checker.timer.data = (unsigned long)instance; | |
1a7aad15 | 735 | instance->last_status = 0xff; |
48da7267 | 736 | instance->poll_delay = MIN_POLL_DELAY; |
1da177e4 | 737 | |
48da7267 DS |
738 | init_timer(&instance->resubmit_timer); |
739 | instance->resubmit_timer.function = speedtch_resubmit_int; | |
740 | instance->resubmit_timer.data = (unsigned long)instance; | |
1da177e4 | 741 | |
48da7267 | 742 | instance->int_urb = usb_alloc_urb(0, GFP_KERNEL); |
1da177e4 | 743 | |
48da7267 DS |
744 | if (instance->int_urb) |
745 | usb_fill_int_urb(instance->int_urb, usb_dev, | |
746 | usb_rcvintpipe(usb_dev, ENDPOINT_INT), | |
747 | instance->int_data, sizeof(instance->int_data), | |
748 | speedtch_handle_int, instance, 50); | |
749 | else | |
750 | usb_dbg(usbatm, "%s: no memory for interrupt urb!\n", __func__); | |
1da177e4 | 751 | |
48da7267 DS |
752 | /* check whether the modem already seems to be alive */ |
753 | ret = usb_control_msg(usb_dev, usb_rcvctrlpipe(usb_dev, 0), | |
754 | 0x12, 0xc0, 0x07, 0x00, | |
755 | instance->scratch_buffer + OFFSET_7, SIZE_7, 500); | |
1da177e4 | 756 | |
48da7267 | 757 | *need_heavy_init = (ret != SIZE_7); |
1da177e4 | 758 | |
48da7267 DS |
759 | usb_dbg(usbatm, "%s: firmware %s loaded\n", __func__, need_heavy_init ? "not" : "already"); |
760 | ||
761 | if (*need_heavy_init) | |
0ec3c7e8 DS |
762 | if ((ret = usb_reset_device(usb_dev)) < 0) { |
763 | usb_err(usbatm, "%s: device reset failed (%d)!\n", __func__, ret); | |
48da7267 | 764 | goto fail_free; |
0ec3c7e8 | 765 | } |
1da177e4 | 766 | |
48da7267 | 767 | usbatm->driver_data = instance; |
1da177e4 LT |
768 | |
769 | return 0; | |
770 | ||
48da7267 DS |
771 | fail_free: |
772 | usb_free_urb(instance->int_urb); | |
1da177e4 | 773 | kfree(instance); |
48da7267 DS |
774 | fail_release: |
775 | speedtch_release_interfaces(usb_dev, num_interfaces); | |
776 | return ret; | |
1da177e4 LT |
777 | } |
778 | ||
48da7267 | 779 | static void speedtch_unbind(struct usbatm_data *usbatm, struct usb_interface *intf) |
1da177e4 | 780 | { |
48da7267 DS |
781 | struct usb_device *usb_dev = interface_to_usbdev(intf); |
782 | struct speedtch_instance_data *instance = usbatm->driver_data; | |
1da177e4 | 783 | |
48da7267 | 784 | usb_dbg(usbatm, "%s entered\n", __func__); |
1da177e4 | 785 | |
48da7267 DS |
786 | speedtch_release_interfaces(usb_dev, usb_dev->actconfig->desc.bNumInterfaces); |
787 | usb_free_urb(instance->int_urb); | |
788 | kfree(instance); | |
1da177e4 LT |
789 | } |
790 | ||
48da7267 | 791 | |
1da177e4 LT |
792 | /*********** |
793 | ** init ** | |
794 | ***********/ | |
795 | ||
48da7267 DS |
796 | static struct usbatm_driver speedtch_usbatm_driver = { |
797 | .owner = THIS_MODULE, | |
798 | .driver_name = speedtch_driver_name, | |
799 | .bind = speedtch_bind, | |
800 | .heavy_init = speedtch_heavy_init, | |
801 | .unbind = speedtch_unbind, | |
802 | .atm_start = speedtch_atm_start, | |
803 | .atm_stop = speedtch_atm_stop, | |
804 | .in = ENDPOINT_DATA, | |
805 | .out = ENDPOINT_DATA | |
806 | }; | |
807 | ||
808 | static int speedtch_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
809 | { | |
810 | return usbatm_usb_probe(intf, id, &speedtch_usbatm_driver); | |
811 | } | |
812 | ||
1da177e4 LT |
813 | static int __init speedtch_usb_init(void) |
814 | { | |
48da7267 | 815 | dbg("%s: driver version %s", __func__, DRIVER_VERSION); |
1da177e4 LT |
816 | |
817 | return usb_register(&speedtch_usb_driver); | |
818 | } | |
819 | ||
820 | static void __exit speedtch_usb_cleanup(void) | |
821 | { | |
48da7267 | 822 | dbg("%s", __func__); |
1da177e4 LT |
823 | |
824 | usb_deregister(&speedtch_usb_driver); | |
825 | } | |
826 | ||
827 | module_init(speedtch_usb_init); | |
828 | module_exit(speedtch_usb_cleanup); | |
829 | ||
830 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
831 | MODULE_DESCRIPTION(DRIVER_DESC); | |
832 | MODULE_LICENSE("GPL"); | |
833 | MODULE_VERSION(DRIVER_VERSION); |