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Merge tag 'for-linus-v3.10-rc3' of git://oss.sgi.com/xfs/xfs
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / usb / atm / cxacru.c
1 /******************************************************************************
2 * cxacru.c - driver for USB ADSL modems based on
3 * Conexant AccessRunner chipset
4 *
5 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
6 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
7 * Copyright (C) 2007 Simon Arlott
8 * Copyright (C) 2009 Simon Arlott
9 *
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
26 /*
27 * Credit is due for Josep Comas, who created the original patch to speedtch.c
28 * to support the different padding used by the AccessRunner (now generalized
29 * into usbatm), and the userspace firmware loading utility.
30 */
31
32 #include <linux/module.h>
33 #include <linux/moduleparam.h>
34 #include <linux/kernel.h>
35 #include <linux/timer.h>
36 #include <linux/errno.h>
37 #include <linux/slab.h>
38 #include <linux/init.h>
39 #include <linux/device.h>
40 #include <linux/firmware.h>
41 #include <linux/mutex.h>
42 #include <asm/unaligned.h>
43
44 #include "usbatm.h"
45
46 #define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
47 #define DRIVER_VERSION "0.4"
48 #define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
49
50 static const char cxacru_driver_name[] = "cxacru";
51
52 #define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
53 #define CXACRU_EP_DATA 0x02 /* Bulk in/out */
54
55 #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
56 #define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2)
57
58 /* Addresses */
59 #define PLLFCLK_ADDR 0x00350068
60 #define PLLBCLK_ADDR 0x0035006c
61 #define SDRAMEN_ADDR 0x00350010
62 #define FW_ADDR 0x00801000
63 #define BR_ADDR 0x00180600
64 #define SIG_ADDR 0x00180500
65 #define BR_STACK_ADDR 0x00187f10
66
67 /* Values */
68 #define SDRAM_ENA 0x1
69
70 #define CMD_TIMEOUT 2000 /* msecs */
71 #define POLL_INTERVAL 1 /* secs */
72
73 /* commands for interaction with the modem through the control channel before
74 * firmware is loaded */
75 enum cxacru_fw_request {
76 FW_CMD_ERR,
77 FW_GET_VER,
78 FW_READ_MEM,
79 FW_WRITE_MEM,
80 FW_RMW_MEM,
81 FW_CHECKSUM_MEM,
82 FW_GOTO_MEM,
83 };
84
85 /* commands for interaction with the modem through the control channel once
86 * firmware is loaded */
87 enum cxacru_cm_request {
88 CM_REQUEST_UNDEFINED = 0x80,
89 CM_REQUEST_TEST,
90 CM_REQUEST_CHIP_GET_MAC_ADDRESS,
91 CM_REQUEST_CHIP_GET_DP_VERSIONS,
92 CM_REQUEST_CHIP_ADSL_LINE_START,
93 CM_REQUEST_CHIP_ADSL_LINE_STOP,
94 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
95 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
96 CM_REQUEST_CARD_INFO_GET,
97 CM_REQUEST_CARD_DATA_GET,
98 CM_REQUEST_CARD_DATA_SET,
99 CM_REQUEST_COMMAND_HW_IO,
100 CM_REQUEST_INTERFACE_HW_IO,
101 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
102 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
103 CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
104 CM_REQUEST_CARD_GET_STATUS,
105 CM_REQUEST_CARD_GET_MAC_ADDRESS,
106 CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
107 CM_REQUEST_MAX,
108 };
109
110 /* commands for interaction with the flash memory
111 *
112 * read: response is the contents of the first 60 bytes of flash memory
113 * write: request contains the 60 bytes of data to write to flash memory
114 * response is the contents of the first 60 bytes of flash memory
115 *
116 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS
117 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00
118 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
119 *
120 * P: le16 USB Product ID
121 * V: le16 USB Vendor ID
122 * M: be48 MAC Address
123 * S: le16 ASCII Serial Number
124 */
125 enum cxacru_cm_flash {
126 CM_FLASH_READ = 0xa1,
127 CM_FLASH_WRITE = 0xa2
128 };
129
130 /* reply codes to the commands above */
131 enum cxacru_cm_status {
132 CM_STATUS_UNDEFINED,
133 CM_STATUS_SUCCESS,
134 CM_STATUS_ERROR,
135 CM_STATUS_UNSUPPORTED,
136 CM_STATUS_UNIMPLEMENTED,
137 CM_STATUS_PARAMETER_ERROR,
138 CM_STATUS_DBG_LOOPBACK,
139 CM_STATUS_MAX,
140 };
141
142 /* indices into CARD_INFO_GET return array */
143 enum cxacru_info_idx {
144 CXINF_DOWNSTREAM_RATE,
145 CXINF_UPSTREAM_RATE,
146 CXINF_LINK_STATUS,
147 CXINF_LINE_STATUS,
148 CXINF_MAC_ADDRESS_HIGH,
149 CXINF_MAC_ADDRESS_LOW,
150 CXINF_UPSTREAM_SNR_MARGIN,
151 CXINF_DOWNSTREAM_SNR_MARGIN,
152 CXINF_UPSTREAM_ATTENUATION,
153 CXINF_DOWNSTREAM_ATTENUATION,
154 CXINF_TRANSMITTER_POWER,
155 CXINF_UPSTREAM_BITS_PER_FRAME,
156 CXINF_DOWNSTREAM_BITS_PER_FRAME,
157 CXINF_STARTUP_ATTEMPTS,
158 CXINF_UPSTREAM_CRC_ERRORS,
159 CXINF_DOWNSTREAM_CRC_ERRORS,
160 CXINF_UPSTREAM_FEC_ERRORS,
161 CXINF_DOWNSTREAM_FEC_ERRORS,
162 CXINF_UPSTREAM_HEC_ERRORS,
163 CXINF_DOWNSTREAM_HEC_ERRORS,
164 CXINF_LINE_STARTABLE,
165 CXINF_MODULATION,
166 CXINF_ADSL_HEADEND,
167 CXINF_ADSL_HEADEND_ENVIRONMENT,
168 CXINF_CONTROLLER_VERSION,
169 /* dunno what the missing two mean */
170 CXINF_MAX = 0x1c,
171 };
172
173 enum cxacru_poll_state {
174 CXPOLL_STOPPING,
175 CXPOLL_STOPPED,
176 CXPOLL_POLLING,
177 CXPOLL_SHUTDOWN
178 };
179
180 struct cxacru_modem_type {
181 u32 pll_f_clk;
182 u32 pll_b_clk;
183 int boot_rom_patch;
184 };
185
186 struct cxacru_data {
187 struct usbatm_data *usbatm;
188
189 const struct cxacru_modem_type *modem_type;
190
191 int line_status;
192 struct mutex adsl_state_serialize;
193 int adsl_status;
194 struct delayed_work poll_work;
195 u32 card_info[CXINF_MAX];
196 struct mutex poll_state_serialize;
197 enum cxacru_poll_state poll_state;
198
199 /* contol handles */
200 struct mutex cm_serialize;
201 u8 *rcv_buf;
202 u8 *snd_buf;
203 struct urb *rcv_urb;
204 struct urb *snd_urb;
205 struct completion rcv_done;
206 struct completion snd_done;
207 };
208
209 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
210 u8 *wdata, int wsize, u8 *rdata, int rsize);
211 static void cxacru_poll_status(struct work_struct *work);
212
213 /* Card info exported through sysfs */
214 #define CXACRU__ATTR_INIT(_name) \
215 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
216
217 #define CXACRU_CMD_INIT(_name) \
218 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
219 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
220
221 #define CXACRU_SET_INIT(_name) \
222 static DEVICE_ATTR(_name, S_IWUSR, \
223 NULL, cxacru_sysfs_store_##_name)
224
225 #define CXACRU_ATTR_INIT(_value, _type, _name) \
226 static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
227 struct device_attribute *attr, char *buf) \
228 { \
229 struct cxacru_data *instance = to_usbatm_driver_data(\
230 to_usb_interface(dev)); \
231 \
232 if (instance == NULL) \
233 return -ENODEV; \
234 \
235 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
236 } \
237 CXACRU__ATTR_INIT(_name)
238
239 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
240 #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
241 #define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
242 #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
243
244 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
245 #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
246 #define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
247 #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
248
249 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
250 {
251 return snprintf(buf, PAGE_SIZE, "%u\n", value);
252 }
253
254 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
255 {
256 return snprintf(buf, PAGE_SIZE, "%d\n", value);
257 }
258
259 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
260 {
261 if (likely(value >= 0)) {
262 return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
263 value / 100, value % 100);
264 } else {
265 value = -value;
266 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n",
267 value / 100, value % 100);
268 }
269 }
270
271 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
272 {
273 static char *str[] = { "no", "yes" };
274 if (unlikely(value >= ARRAY_SIZE(str)))
275 return snprintf(buf, PAGE_SIZE, "%u\n", value);
276 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
277 }
278
279 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
280 {
281 static char *str[] = { NULL, "not connected", "connected", "lost" };
282 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
283 return snprintf(buf, PAGE_SIZE, "%u\n", value);
284 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
285 }
286
287 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
288 {
289 static char *str[] = { "down", "attempting to activate",
290 "training", "channel analysis", "exchange", "up",
291 "waiting", "initialising"
292 };
293 if (unlikely(value >= ARRAY_SIZE(str)))
294 return snprintf(buf, PAGE_SIZE, "%u\n", value);
295 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
296 }
297
298 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
299 {
300 static char *str[] = {
301 "",
302 "ANSI T1.413",
303 "ITU-T G.992.1 (G.DMT)",
304 "ITU-T G.992.2 (G.LITE)"
305 };
306 if (unlikely(value >= ARRAY_SIZE(str)))
307 return snprintf(buf, PAGE_SIZE, "%u\n", value);
308 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
309 }
310
311 /*
312 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
313 * this data is already in atm_dev there's no point.
314 *
315 * MAC_ADDRESS_HIGH = 0x????5544
316 * MAC_ADDRESS_LOW = 0x33221100
317 * Where 00-55 are bytes 0-5 of the MAC.
318 */
319 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
320 struct device_attribute *attr, char *buf)
321 {
322 struct cxacru_data *instance = to_usbatm_driver_data(
323 to_usb_interface(dev));
324
325 if (instance == NULL || instance->usbatm->atm_dev == NULL)
326 return -ENODEV;
327
328 return snprintf(buf, PAGE_SIZE, "%pM\n",
329 instance->usbatm->atm_dev->esi);
330 }
331
332 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
333 struct device_attribute *attr, char *buf)
334 {
335 static char *str[] = { "running", "stopped" };
336 struct cxacru_data *instance = to_usbatm_driver_data(
337 to_usb_interface(dev));
338 u32 value;
339
340 if (instance == NULL)
341 return -ENODEV;
342
343 value = instance->card_info[CXINF_LINE_STARTABLE];
344 if (unlikely(value >= ARRAY_SIZE(str)))
345 return snprintf(buf, PAGE_SIZE, "%u\n", value);
346 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
347 }
348
349 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
350 struct device_attribute *attr, const char *buf, size_t count)
351 {
352 struct cxacru_data *instance = to_usbatm_driver_data(
353 to_usb_interface(dev));
354 int ret;
355 int poll = -1;
356 char str_cmd[8];
357 int len = strlen(buf);
358
359 if (!capable(CAP_NET_ADMIN))
360 return -EACCES;
361
362 ret = sscanf(buf, "%7s", str_cmd);
363 if (ret != 1)
364 return -EINVAL;
365 ret = 0;
366
367 if (instance == NULL)
368 return -ENODEV;
369
370 if (mutex_lock_interruptible(&instance->adsl_state_serialize))
371 return -ERESTARTSYS;
372
373 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
374 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
375 if (ret < 0) {
376 atm_err(instance->usbatm, "change adsl state:"
377 " CHIP_ADSL_LINE_STOP returned %d\n", ret);
378
379 ret = -EIO;
380 } else {
381 ret = len;
382 poll = CXPOLL_STOPPED;
383 }
384 }
385
386 /* Line status is only updated every second
387 * and the device appears to only react to
388 * START/STOP every second too. Wait 1.5s to
389 * be sure that restart will have an effect. */
390 if (!strcmp(str_cmd, "restart"))
391 msleep(1500);
392
393 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
394 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
395 if (ret < 0) {
396 atm_err(instance->usbatm, "change adsl state:"
397 " CHIP_ADSL_LINE_START returned %d\n", ret);
398
399 ret = -EIO;
400 } else {
401 ret = len;
402 poll = CXPOLL_POLLING;
403 }
404 }
405
406 if (!strcmp(str_cmd, "poll")) {
407 ret = len;
408 poll = CXPOLL_POLLING;
409 }
410
411 if (ret == 0) {
412 ret = -EINVAL;
413 poll = -1;
414 }
415
416 if (poll == CXPOLL_POLLING) {
417 mutex_lock(&instance->poll_state_serialize);
418 switch (instance->poll_state) {
419 case CXPOLL_STOPPED:
420 /* start polling */
421 instance->poll_state = CXPOLL_POLLING;
422 break;
423
424 case CXPOLL_STOPPING:
425 /* abort stop request */
426 instance->poll_state = CXPOLL_POLLING;
427 case CXPOLL_POLLING:
428 case CXPOLL_SHUTDOWN:
429 /* don't start polling */
430 poll = -1;
431 }
432 mutex_unlock(&instance->poll_state_serialize);
433 } else if (poll == CXPOLL_STOPPED) {
434 mutex_lock(&instance->poll_state_serialize);
435 /* request stop */
436 if (instance->poll_state == CXPOLL_POLLING)
437 instance->poll_state = CXPOLL_STOPPING;
438 mutex_unlock(&instance->poll_state_serialize);
439 }
440
441 mutex_unlock(&instance->adsl_state_serialize);
442
443 if (poll == CXPOLL_POLLING)
444 cxacru_poll_status(&instance->poll_work.work);
445
446 return ret;
447 }
448
449 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */
450
451 static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev,
452 struct device_attribute *attr, const char *buf, size_t count)
453 {
454 struct cxacru_data *instance = to_usbatm_driver_data(
455 to_usb_interface(dev));
456 int len = strlen(buf);
457 int ret, pos, num;
458 __le32 data[CMD_PACKET_SIZE / 4];
459
460 if (!capable(CAP_NET_ADMIN))
461 return -EACCES;
462
463 if (instance == NULL)
464 return -ENODEV;
465
466 pos = 0;
467 num = 0;
468 while (pos < len) {
469 int tmp;
470 u32 index;
471 u32 value;
472
473 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp);
474 if (ret < 2)
475 return -EINVAL;
476 if (index < 0 || index > 0x7f)
477 return -EINVAL;
478 pos += tmp;
479
480 /* skip trailing newline */
481 if (buf[pos] == '\n' && pos == len-1)
482 pos++;
483
484 data[num * 2 + 1] = cpu_to_le32(index);
485 data[num * 2 + 2] = cpu_to_le32(value);
486 num++;
487
488 /* send config values when data buffer is full
489 * or no more data
490 */
491 if (pos >= len || num >= CMD_MAX_CONFIG) {
492 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */
493
494 data[0] = cpu_to_le32(num);
495 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
496 (u8 *) data, 4 + num * 8, NULL, 0);
497 if (ret < 0) {
498 atm_err(instance->usbatm,
499 "set card data returned %d\n", ret);
500 return -EIO;
501 }
502
503 for (tmp = 0; tmp < num; tmp++)
504 snprintf(log + tmp*12, 13, " %02x=%08x",
505 le32_to_cpu(data[tmp * 2 + 1]),
506 le32_to_cpu(data[tmp * 2 + 2]));
507 atm_info(instance->usbatm, "config%s\n", log);
508 num = 0;
509 }
510 }
511
512 return len;
513 }
514
515 /*
516 * All device attributes are included in CXACRU_ALL_FILES
517 * so that the same list can be used multiple times:
518 * INIT (define the device attributes)
519 * CREATE (create all the device files)
520 * REMOVE (remove all the device files)
521 *
522 * With the last two being defined as needed in the functions
523 * they are used in before calling CXACRU_ALL_FILES()
524 */
525 #define CXACRU_ALL_FILES(_action) \
526 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \
527 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \
528 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \
529 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \
530 CXACRU__ATTR_##_action( mac_address); \
531 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \
532 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \
533 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \
534 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \
535 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \
536 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \
537 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \
538 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \
539 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \
540 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \
541 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \
542 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \
543 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \
544 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \
545 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \
546 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \
547 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \
548 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \
549 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \
550 CXACRU_CMD_##_action( adsl_state); \
551 CXACRU_SET_##_action( adsl_config);
552
553 CXACRU_ALL_FILES(INIT);
554
555 /* the following three functions are stolen from drivers/usb/core/message.c */
556 static void cxacru_blocking_completion(struct urb *urb)
557 {
558 complete(urb->context);
559 }
560
561 static void cxacru_timeout_kill(unsigned long data)
562 {
563 usb_unlink_urb((struct urb *) data);
564 }
565
566 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
567 int *actual_length)
568 {
569 struct timer_list timer;
570
571 init_timer(&timer);
572 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
573 timer.data = (unsigned long) urb;
574 timer.function = cxacru_timeout_kill;
575 add_timer(&timer);
576 wait_for_completion(done);
577 del_timer_sync(&timer);
578
579 if (actual_length)
580 *actual_length = urb->actual_length;
581 return urb->status; /* must read status after completion */
582 }
583
584 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
585 u8 *wdata, int wsize, u8 *rdata, int rsize)
586 {
587 int ret, actlen;
588 int offb, offd;
589 const int stride = CMD_PACKET_SIZE - 4;
590 u8 *wbuf = instance->snd_buf;
591 u8 *rbuf = instance->rcv_buf;
592 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
593 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
594
595 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
596 if (printk_ratelimit())
597 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
598 wbuflen, rbuflen);
599 ret = -ENOMEM;
600 goto err;
601 }
602
603 mutex_lock(&instance->cm_serialize);
604
605 /* submit reading urb before the writing one */
606 init_completion(&instance->rcv_done);
607 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
608 if (ret < 0) {
609 if (printk_ratelimit())
610 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
611 cm, ret);
612 goto fail;
613 }
614
615 memset(wbuf, 0, wbuflen);
616 /* handle wsize == 0 */
617 wbuf[0] = cm;
618 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
619 wbuf[offb] = cm;
620 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
621 }
622
623 instance->snd_urb->transfer_buffer_length = wbuflen;
624 init_completion(&instance->snd_done);
625 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
626 if (ret < 0) {
627 if (printk_ratelimit())
628 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
629 cm, ret);
630 goto fail;
631 }
632
633 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
634 if (ret < 0) {
635 if (printk_ratelimit())
636 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
637 goto fail;
638 }
639
640 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
641 if (ret < 0) {
642 if (printk_ratelimit())
643 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
644 goto fail;
645 }
646 if (actlen % CMD_PACKET_SIZE || !actlen) {
647 if (printk_ratelimit())
648 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
649 cm, actlen);
650 ret = -EIO;
651 goto fail;
652 }
653
654 /* check the return status and copy the data to the output buffer, if needed */
655 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
656 if (rbuf[offb] != cm) {
657 if (printk_ratelimit())
658 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
659 rbuf[offb], cm);
660 ret = -EIO;
661 goto fail;
662 }
663 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
664 if (printk_ratelimit())
665 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
666 cm, rbuf[offb + 1]);
667 ret = -EIO;
668 goto fail;
669 }
670 if (offd >= rsize)
671 break;
672 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
673 offd += stride;
674 }
675
676 ret = offd;
677 usb_dbg(instance->usbatm, "cm %#x\n", cm);
678 fail:
679 mutex_unlock(&instance->cm_serialize);
680 err:
681 return ret;
682 }
683
684 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
685 u32 *data, int size)
686 {
687 int ret, len;
688 __le32 *buf;
689 int offb;
690 unsigned int offd;
691 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
692 int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
693
694 buf = kmalloc(buflen, GFP_KERNEL);
695 if (!buf)
696 return -ENOMEM;
697
698 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
699 if (ret < 0)
700 goto cleanup;
701
702 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
703 len = ret / 4;
704 for (offb = 0; offb < len; ) {
705 int l = le32_to_cpu(buf[offb++]);
706 if (l < 0 || l > stride || l > (len - offb) / 2) {
707 if (printk_ratelimit())
708 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
709 cm, l);
710 ret = -EIO;
711 goto cleanup;
712 }
713 while (l--) {
714 offd = le32_to_cpu(buf[offb++]);
715 if (offd >= size) {
716 if (printk_ratelimit())
717 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
718 offd, cm);
719 ret = -EIO;
720 goto cleanup;
721 }
722 data[offd] = le32_to_cpu(buf[offb++]);
723 }
724 }
725
726 ret = 0;
727
728 cleanup:
729 kfree(buf);
730 return ret;
731 }
732
733 static int cxacru_card_status(struct cxacru_data *instance)
734 {
735 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
736 if (ret < 0) { /* firmware not loaded */
737 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret);
738 return ret;
739 }
740 return 0;
741 }
742
743 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
744 struct atm_dev *atm_dev)
745 {
746 struct usb_interface *intf = usbatm_instance->usb_intf;
747
748 #define CXACRU_DEVICE_REMOVE_FILE(_name) \
749 device_remove_file(&intf->dev, &dev_attr_##_name);
750 CXACRU_ALL_FILES(REMOVE);
751 #undef CXACRU_DEVICE_REMOVE_FILE
752 }
753
754 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
755 struct atm_dev *atm_dev)
756 {
757 struct cxacru_data *instance = usbatm_instance->driver_data;
758 struct usb_interface *intf = usbatm_instance->usb_intf;
759 int ret;
760 int start_polling = 1;
761
762 dev_dbg(&intf->dev, "%s\n", __func__);
763
764 /* Read MAC address */
765 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
766 atm_dev->esi, sizeof(atm_dev->esi));
767 if (ret < 0) {
768 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
769 return ret;
770 }
771
772 #define CXACRU_DEVICE_CREATE_FILE(_name) \
773 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
774 if (unlikely(ret)) \
775 goto fail_sysfs;
776 CXACRU_ALL_FILES(CREATE);
777 #undef CXACRU_DEVICE_CREATE_FILE
778
779 /* start ADSL */
780 mutex_lock(&instance->adsl_state_serialize);
781 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
782 if (ret < 0)
783 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
784
785 /* Start status polling */
786 mutex_lock(&instance->poll_state_serialize);
787 switch (instance->poll_state) {
788 case CXPOLL_STOPPED:
789 /* start polling */
790 instance->poll_state = CXPOLL_POLLING;
791 break;
792
793 case CXPOLL_STOPPING:
794 /* abort stop request */
795 instance->poll_state = CXPOLL_POLLING;
796 case CXPOLL_POLLING:
797 case CXPOLL_SHUTDOWN:
798 /* don't start polling */
799 start_polling = 0;
800 }
801 mutex_unlock(&instance->poll_state_serialize);
802 mutex_unlock(&instance->adsl_state_serialize);
803
804 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number,
805 usbatm_instance->description, atm_dev->esi);
806
807 if (start_polling)
808 cxacru_poll_status(&instance->poll_work.work);
809 return 0;
810
811 fail_sysfs:
812 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
813 cxacru_remove_device_files(usbatm_instance, atm_dev);
814 return ret;
815 }
816
817 static void cxacru_poll_status(struct work_struct *work)
818 {
819 struct cxacru_data *instance =
820 container_of(work, struct cxacru_data, poll_work.work);
821 u32 buf[CXINF_MAX] = {};
822 struct usbatm_data *usbatm = instance->usbatm;
823 struct atm_dev *atm_dev = usbatm->atm_dev;
824 int keep_polling = 1;
825 int ret;
826
827 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
828 if (ret < 0) {
829 if (ret != -ESHUTDOWN)
830 atm_warn(usbatm, "poll status: error %d\n", ret);
831
832 mutex_lock(&instance->poll_state_serialize);
833 if (instance->poll_state != CXPOLL_SHUTDOWN) {
834 instance->poll_state = CXPOLL_STOPPED;
835
836 if (ret != -ESHUTDOWN)
837 atm_warn(usbatm, "polling disabled, set adsl_state"
838 " to 'start' or 'poll' to resume\n");
839 }
840 mutex_unlock(&instance->poll_state_serialize);
841 goto reschedule;
842 }
843
844 memcpy(instance->card_info, buf, sizeof(instance->card_info));
845
846 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
847 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
848
849 switch (instance->adsl_status) {
850 case 0:
851 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
852 break;
853
854 case 1:
855 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
856 break;
857
858 default:
859 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
860 break;
861 }
862 }
863
864 if (instance->line_status == buf[CXINF_LINE_STATUS])
865 goto reschedule;
866
867 instance->line_status = buf[CXINF_LINE_STATUS];
868 switch (instance->line_status) {
869 case 0:
870 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
871 atm_info(usbatm, "ADSL line: down\n");
872 break;
873
874 case 1:
875 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
876 atm_info(usbatm, "ADSL line: attempting to activate\n");
877 break;
878
879 case 2:
880 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
881 atm_info(usbatm, "ADSL line: training\n");
882 break;
883
884 case 3:
885 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
886 atm_info(usbatm, "ADSL line: channel analysis\n");
887 break;
888
889 case 4:
890 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
891 atm_info(usbatm, "ADSL line: exchange\n");
892 break;
893
894 case 5:
895 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
896 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND);
897
898 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
899 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
900 break;
901
902 case 6:
903 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
904 atm_info(usbatm, "ADSL line: waiting\n");
905 break;
906
907 case 7:
908 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
909 atm_info(usbatm, "ADSL line: initializing\n");
910 break;
911
912 default:
913 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN);
914 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
915 break;
916 }
917 reschedule:
918
919 mutex_lock(&instance->poll_state_serialize);
920 if (instance->poll_state == CXPOLL_STOPPING &&
921 instance->adsl_status == 1 && /* stopped */
922 instance->line_status == 0) /* down */
923 instance->poll_state = CXPOLL_STOPPED;
924
925 if (instance->poll_state == CXPOLL_STOPPED)
926 keep_polling = 0;
927 mutex_unlock(&instance->poll_state_serialize);
928
929 if (keep_polling)
930 schedule_delayed_work(&instance->poll_work,
931 round_jiffies_relative(POLL_INTERVAL*HZ));
932 }
933
934 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
935 u8 code1, u8 code2, u32 addr, const u8 *data, int size)
936 {
937 int ret;
938 u8 *buf;
939 int offd, offb;
940 const int stride = CMD_PACKET_SIZE - 8;
941
942 buf = (u8 *) __get_free_page(GFP_KERNEL);
943 if (!buf)
944 return -ENOMEM;
945
946 offb = offd = 0;
947 do {
948 int l = min_t(int, stride, size - offd);
949 buf[offb++] = fw;
950 buf[offb++] = l;
951 buf[offb++] = code1;
952 buf[offb++] = code2;
953 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb));
954 offb += 4;
955 addr += l;
956 if (l)
957 memcpy(buf + offb, data + offd, l);
958 if (l < stride)
959 memset(buf + offb + l, 0, stride - l);
960 offb += stride;
961 offd += stride;
962 if ((offb >= PAGE_SIZE) || (offd >= size)) {
963 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
964 buf, offb, NULL, CMD_TIMEOUT);
965 if (ret < 0) {
966 dev_dbg(&usb_dev->dev, "sending fw %#x failed\n", fw);
967 goto cleanup;
968 }
969 offb = 0;
970 }
971 } while (offd < size);
972 dev_dbg(&usb_dev->dev, "sent fw %#x\n", fw);
973
974 ret = 0;
975
976 cleanup:
977 free_page((unsigned long) buf);
978 return ret;
979 }
980
981 static void cxacru_upload_firmware(struct cxacru_data *instance,
982 const struct firmware *fw,
983 const struct firmware *bp)
984 {
985 int ret;
986 struct usbatm_data *usbatm = instance->usbatm;
987 struct usb_device *usb_dev = usbatm->usb_dev;
988 __le16 signature[] = { usb_dev->descriptor.idVendor,
989 usb_dev->descriptor.idProduct };
990 __le32 val;
991
992 usb_dbg(usbatm, "%s\n", __func__);
993
994 /* FirmwarePllFClkValue */
995 val = cpu_to_le32(instance->modem_type->pll_f_clk);
996 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
997 if (ret) {
998 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
999 return;
1000 }
1001
1002 /* FirmwarePllBClkValue */
1003 val = cpu_to_le32(instance->modem_type->pll_b_clk);
1004 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
1005 if (ret) {
1006 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
1007 return;
1008 }
1009
1010 /* Enable SDRAM */
1011 val = cpu_to_le32(SDRAM_ENA);
1012 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
1013 if (ret) {
1014 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
1015 return;
1016 }
1017
1018 /* Firmware */
1019 usb_info(usbatm, "loading firmware\n");
1020 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
1021 if (ret) {
1022 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
1023 return;
1024 }
1025
1026 /* Boot ROM patch */
1027 if (instance->modem_type->boot_rom_patch) {
1028 usb_info(usbatm, "loading boot ROM patch\n");
1029 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
1030 if (ret) {
1031 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
1032 return;
1033 }
1034 }
1035
1036 /* Signature */
1037 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
1038 if (ret) {
1039 usb_err(usbatm, "Signature storing failed: %d\n", ret);
1040 return;
1041 }
1042
1043 usb_info(usbatm, "starting device\n");
1044 if (instance->modem_type->boot_rom_patch) {
1045 val = cpu_to_le32(BR_ADDR);
1046 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
1047 } else {
1048 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
1049 }
1050 if (ret) {
1051 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
1052 return;
1053 }
1054
1055 /* Delay to allow firmware to start up. */
1056 msleep_interruptible(1000);
1057
1058 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
1059 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
1060 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
1061 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
1062
1063 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
1064 if (ret < 0) {
1065 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
1066 return;
1067 }
1068 }
1069
1070 static int cxacru_find_firmware(struct cxacru_data *instance,
1071 char *phase, const struct firmware **fw_p)
1072 {
1073 struct usbatm_data *usbatm = instance->usbatm;
1074 struct device *dev = &usbatm->usb_intf->dev;
1075 char buf[16];
1076
1077 sprintf(buf, "cxacru-%s.bin", phase);
1078 usb_dbg(usbatm, "cxacru_find_firmware: looking for %s\n", buf);
1079
1080 if (request_firmware(fw_p, buf, dev)) {
1081 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
1082 return -ENOENT;
1083 }
1084
1085 usb_info(usbatm, "found firmware %s\n", buf);
1086
1087 return 0;
1088 }
1089
1090 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
1091 struct usb_interface *usb_intf)
1092 {
1093 const struct firmware *fw, *bp;
1094 struct cxacru_data *instance = usbatm_instance->driver_data;
1095
1096 int ret = cxacru_find_firmware(instance, "fw", &fw);
1097 if (ret) {
1098 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1099 return ret;
1100 }
1101
1102 if (instance->modem_type->boot_rom_patch) {
1103 ret = cxacru_find_firmware(instance, "bp", &bp);
1104 if (ret) {
1105 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1106 release_firmware(fw);
1107 return ret;
1108 }
1109 }
1110
1111 cxacru_upload_firmware(instance, fw, bp);
1112
1113 if (instance->modem_type->boot_rom_patch)
1114 release_firmware(bp);
1115 release_firmware(fw);
1116
1117 ret = cxacru_card_status(instance);
1118 if (ret)
1119 usb_dbg(usbatm_instance, "modem initialisation failed\n");
1120 else
1121 usb_dbg(usbatm_instance, "done setting up the modem\n");
1122
1123 return ret;
1124 }
1125
1126 static int cxacru_bind(struct usbatm_data *usbatm_instance,
1127 struct usb_interface *intf, const struct usb_device_id *id)
1128 {
1129 struct cxacru_data *instance;
1130 struct usb_device *usb_dev = interface_to_usbdev(intf);
1131 struct usb_host_endpoint *cmd_ep = usb_dev->ep_in[CXACRU_EP_CMD];
1132 int ret;
1133
1134 /* instance init */
1135 instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1136 if (!instance) {
1137 usb_dbg(usbatm_instance, "cxacru_bind: no memory for instance data\n");
1138 return -ENOMEM;
1139 }
1140
1141 instance->usbatm = usbatm_instance;
1142 instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1143
1144 mutex_init(&instance->poll_state_serialize);
1145 instance->poll_state = CXPOLL_STOPPED;
1146 instance->line_status = -1;
1147 instance->adsl_status = -1;
1148
1149 mutex_init(&instance->adsl_state_serialize);
1150
1151 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1152 if (!instance->rcv_buf) {
1153 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n");
1154 ret = -ENOMEM;
1155 goto fail;
1156 }
1157 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1158 if (!instance->snd_buf) {
1159 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n");
1160 ret = -ENOMEM;
1161 goto fail;
1162 }
1163 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1164 if (!instance->rcv_urb) {
1165 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_urb\n");
1166 ret = -ENOMEM;
1167 goto fail;
1168 }
1169 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1170 if (!instance->snd_urb) {
1171 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_urb\n");
1172 ret = -ENOMEM;
1173 goto fail;
1174 }
1175
1176 if (!cmd_ep) {
1177 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n");
1178 ret = -ENODEV;
1179 goto fail;
1180 }
1181
1182 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1183 == USB_ENDPOINT_XFER_INT) {
1184 usb_fill_int_urb(instance->rcv_urb,
1185 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1186 instance->rcv_buf, PAGE_SIZE,
1187 cxacru_blocking_completion, &instance->rcv_done, 1);
1188
1189 usb_fill_int_urb(instance->snd_urb,
1190 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1191 instance->snd_buf, PAGE_SIZE,
1192 cxacru_blocking_completion, &instance->snd_done, 4);
1193 } else {
1194 usb_fill_bulk_urb(instance->rcv_urb,
1195 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD),
1196 instance->rcv_buf, PAGE_SIZE,
1197 cxacru_blocking_completion, &instance->rcv_done);
1198
1199 usb_fill_bulk_urb(instance->snd_urb,
1200 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
1201 instance->snd_buf, PAGE_SIZE,
1202 cxacru_blocking_completion, &instance->snd_done);
1203 }
1204
1205 mutex_init(&instance->cm_serialize);
1206
1207 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1208
1209 usbatm_instance->driver_data = instance;
1210
1211 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1212
1213 return 0;
1214
1215 fail:
1216 free_page((unsigned long) instance->snd_buf);
1217 free_page((unsigned long) instance->rcv_buf);
1218 usb_free_urb(instance->snd_urb);
1219 usb_free_urb(instance->rcv_urb);
1220 kfree(instance);
1221
1222 return ret;
1223 }
1224
1225 static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1226 struct usb_interface *intf)
1227 {
1228 struct cxacru_data *instance = usbatm_instance->driver_data;
1229 int is_polling = 1;
1230
1231 usb_dbg(usbatm_instance, "cxacru_unbind entered\n");
1232
1233 if (!instance) {
1234 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n");
1235 return;
1236 }
1237
1238 mutex_lock(&instance->poll_state_serialize);
1239 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1240
1241 /* ensure that status polling continues unless
1242 * it has already stopped */
1243 if (instance->poll_state == CXPOLL_STOPPED)
1244 is_polling = 0;
1245
1246 /* stop polling from being stopped or started */
1247 instance->poll_state = CXPOLL_SHUTDOWN;
1248 mutex_unlock(&instance->poll_state_serialize);
1249
1250 if (is_polling)
1251 cancel_delayed_work_sync(&instance->poll_work);
1252
1253 usb_kill_urb(instance->snd_urb);
1254 usb_kill_urb(instance->rcv_urb);
1255 usb_free_urb(instance->snd_urb);
1256 usb_free_urb(instance->rcv_urb);
1257
1258 free_page((unsigned long) instance->snd_buf);
1259 free_page((unsigned long) instance->rcv_buf);
1260
1261 kfree(instance);
1262
1263 usbatm_instance->driver_data = NULL;
1264 }
1265
1266 static const struct cxacru_modem_type cxacru_cafe = {
1267 .pll_f_clk = 0x02d874df,
1268 .pll_b_clk = 0x0196a51a,
1269 .boot_rom_patch = 1,
1270 };
1271
1272 static const struct cxacru_modem_type cxacru_cb00 = {
1273 .pll_f_clk = 0x5,
1274 .pll_b_clk = 0x3,
1275 .boot_rom_patch = 0,
1276 };
1277
1278 static const struct usb_device_id cxacru_usb_ids[] = {
1279 { /* V = Conexant P = ADSL modem (Euphrates project) */
1280 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
1281 },
1282 { /* V = Conexant P = ADSL modem (Hasbani project) */
1283 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
1284 },
1285 { /* V = Conexant P = ADSL modem */
1286 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1287 },
1288 { /* V = Conexant P = ADSL modem (Well PTI-800) */
1289 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
1290 },
1291 { /* V = Conexant P = ADSL modem */
1292 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
1293 },
1294 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */
1295 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00
1296 },
1297 { /* V = Olitec P = ADSL modem version 2 */
1298 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
1299 },
1300 { /* V = Olitec P = ADSL modem version 3 */
1301 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
1302 },
1303 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
1304 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
1305 },
1306 { /* V = Zoom P = 5510 */
1307 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
1308 },
1309 { /* V = Draytek P = Vigor 318 */
1310 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
1311 },
1312 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
1313 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
1314 },
1315 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
1316 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
1317 },
1318 { /* V = Aethra P = Starmodem UM1020 */
1319 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
1320 },
1321 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
1322 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
1323 },
1324 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
1325 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1326 },
1327 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
1328 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
1329 },
1330 {}
1331 };
1332
1333 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1334
1335 static struct usbatm_driver cxacru_driver = {
1336 .driver_name = cxacru_driver_name,
1337 .bind = cxacru_bind,
1338 .heavy_init = cxacru_heavy_init,
1339 .unbind = cxacru_unbind,
1340 .atm_start = cxacru_atm_start,
1341 .atm_stop = cxacru_remove_device_files,
1342 .bulk_in = CXACRU_EP_DATA,
1343 .bulk_out = CXACRU_EP_DATA,
1344 .rx_padding = 3,
1345 .tx_padding = 11,
1346 };
1347
1348 static int cxacru_usb_probe(struct usb_interface *intf,
1349 const struct usb_device_id *id)
1350 {
1351 struct usb_device *usb_dev = interface_to_usbdev(intf);
1352 char buf[15];
1353
1354 /* Avoid ADSL routers (cx82310_eth).
1355 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD".
1356 */
1357 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC
1358 && usb_string(usb_dev, usb_dev->descriptor.iProduct,
1359 buf, sizeof(buf)) > 0) {
1360 if (!strcmp(buf, "USB NET CARD")) {
1361 dev_info(&intf->dev, "ignoring cx82310_eth device\n");
1362 return -ENODEV;
1363 }
1364 }
1365
1366 return usbatm_usb_probe(intf, id, &cxacru_driver);
1367 }
1368
1369 static struct usb_driver cxacru_usb_driver = {
1370 .name = cxacru_driver_name,
1371 .probe = cxacru_usb_probe,
1372 .disconnect = usbatm_usb_disconnect,
1373 .id_table = cxacru_usb_ids
1374 };
1375
1376 module_usb_driver(cxacru_usb_driver);
1377
1378 MODULE_AUTHOR(DRIVER_AUTHOR);
1379 MODULE_DESCRIPTION(DRIVER_DESC);
1380 MODULE_LICENSE("GPL");
1381 MODULE_VERSION(DRIVER_VERSION);
kernel source for telekom puls (alcatel/mediatek)