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Merge tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[mirror_ubuntu-bionic-kernel.git] / drivers / usb / atm / cxacru.c
1 // SPDX-License-Identifier: GPL-2.0+
2 /******************************************************************************
3 * cxacru.c - driver for USB ADSL modems based on
4 * Conexant AccessRunner chipset
5 *
6 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
7 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
8 * Copyright (C) 2007 Simon Arlott
9 * Copyright (C) 2009 Simon Arlott
10 ******************************************************************************/
11
12 /*
13 * Credit is due for Josep Comas, who created the original patch to speedtch.c
14 * to support the different padding used by the AccessRunner (now generalized
15 * into usbatm), and the userspace firmware loading utility.
16 */
17
18 #include <linux/module.h>
19 #include <linux/moduleparam.h>
20 #include <linux/kernel.h>
21 #include <linux/timer.h>
22 #include <linux/errno.h>
23 #include <linux/slab.h>
24 #include <linux/device.h>
25 #include <linux/firmware.h>
26 #include <linux/mutex.h>
27 #include <asm/unaligned.h>
28
29 #include "usbatm.h"
30
31 #define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
32 #define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
33
34 static const char cxacru_driver_name[] = "cxacru";
35
36 #define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
37 #define CXACRU_EP_DATA 0x02 /* Bulk in/out */
38
39 #define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
40 #define CMD_MAX_CONFIG ((CMD_PACKET_SIZE / 4 - 1) / 2)
41
42 /* Addresses */
43 #define PLLFCLK_ADDR 0x00350068
44 #define PLLBCLK_ADDR 0x0035006c
45 #define SDRAMEN_ADDR 0x00350010
46 #define FW_ADDR 0x00801000
47 #define BR_ADDR 0x00180600
48 #define SIG_ADDR 0x00180500
49 #define BR_STACK_ADDR 0x00187f10
50
51 /* Values */
52 #define SDRAM_ENA 0x1
53
54 #define CMD_TIMEOUT 2000 /* msecs */
55 #define POLL_INTERVAL 1 /* secs */
56
57 /* commands for interaction with the modem through the control channel before
58 * firmware is loaded */
59 enum cxacru_fw_request {
60 FW_CMD_ERR,
61 FW_GET_VER,
62 FW_READ_MEM,
63 FW_WRITE_MEM,
64 FW_RMW_MEM,
65 FW_CHECKSUM_MEM,
66 FW_GOTO_MEM,
67 };
68
69 /* commands for interaction with the modem through the control channel once
70 * firmware is loaded */
71 enum cxacru_cm_request {
72 CM_REQUEST_UNDEFINED = 0x80,
73 CM_REQUEST_TEST,
74 CM_REQUEST_CHIP_GET_MAC_ADDRESS,
75 CM_REQUEST_CHIP_GET_DP_VERSIONS,
76 CM_REQUEST_CHIP_ADSL_LINE_START,
77 CM_REQUEST_CHIP_ADSL_LINE_STOP,
78 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
79 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
80 CM_REQUEST_CARD_INFO_GET,
81 CM_REQUEST_CARD_DATA_GET,
82 CM_REQUEST_CARD_DATA_SET,
83 CM_REQUEST_COMMAND_HW_IO,
84 CM_REQUEST_INTERFACE_HW_IO,
85 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
86 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
87 CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
88 CM_REQUEST_CARD_GET_STATUS,
89 CM_REQUEST_CARD_GET_MAC_ADDRESS,
90 CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
91 CM_REQUEST_MAX,
92 };
93
94 /* commands for interaction with the flash memory
95 *
96 * read: response is the contents of the first 60 bytes of flash memory
97 * write: request contains the 60 bytes of data to write to flash memory
98 * response is the contents of the first 60 bytes of flash memory
99 *
100 * layout: PP PP VV VV MM MM MM MM MM MM ?? ?? SS SS SS SS SS SS SS SS
101 * SS SS SS SS SS SS SS SS 00 00 00 00 00 00 00 00 00 00 00 00
102 * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
103 *
104 * P: le16 USB Product ID
105 * V: le16 USB Vendor ID
106 * M: be48 MAC Address
107 * S: le16 ASCII Serial Number
108 */
109 enum cxacru_cm_flash {
110 CM_FLASH_READ = 0xa1,
111 CM_FLASH_WRITE = 0xa2
112 };
113
114 /* reply codes to the commands above */
115 enum cxacru_cm_status {
116 CM_STATUS_UNDEFINED,
117 CM_STATUS_SUCCESS,
118 CM_STATUS_ERROR,
119 CM_STATUS_UNSUPPORTED,
120 CM_STATUS_UNIMPLEMENTED,
121 CM_STATUS_PARAMETER_ERROR,
122 CM_STATUS_DBG_LOOPBACK,
123 CM_STATUS_MAX,
124 };
125
126 /* indices into CARD_INFO_GET return array */
127 enum cxacru_info_idx {
128 CXINF_DOWNSTREAM_RATE,
129 CXINF_UPSTREAM_RATE,
130 CXINF_LINK_STATUS,
131 CXINF_LINE_STATUS,
132 CXINF_MAC_ADDRESS_HIGH,
133 CXINF_MAC_ADDRESS_LOW,
134 CXINF_UPSTREAM_SNR_MARGIN,
135 CXINF_DOWNSTREAM_SNR_MARGIN,
136 CXINF_UPSTREAM_ATTENUATION,
137 CXINF_DOWNSTREAM_ATTENUATION,
138 CXINF_TRANSMITTER_POWER,
139 CXINF_UPSTREAM_BITS_PER_FRAME,
140 CXINF_DOWNSTREAM_BITS_PER_FRAME,
141 CXINF_STARTUP_ATTEMPTS,
142 CXINF_UPSTREAM_CRC_ERRORS,
143 CXINF_DOWNSTREAM_CRC_ERRORS,
144 CXINF_UPSTREAM_FEC_ERRORS,
145 CXINF_DOWNSTREAM_FEC_ERRORS,
146 CXINF_UPSTREAM_HEC_ERRORS,
147 CXINF_DOWNSTREAM_HEC_ERRORS,
148 CXINF_LINE_STARTABLE,
149 CXINF_MODULATION,
150 CXINF_ADSL_HEADEND,
151 CXINF_ADSL_HEADEND_ENVIRONMENT,
152 CXINF_CONTROLLER_VERSION,
153 /* dunno what the missing two mean */
154 CXINF_MAX = 0x1c,
155 };
156
157 enum cxacru_poll_state {
158 CXPOLL_STOPPING,
159 CXPOLL_STOPPED,
160 CXPOLL_POLLING,
161 CXPOLL_SHUTDOWN
162 };
163
164 struct cxacru_modem_type {
165 u32 pll_f_clk;
166 u32 pll_b_clk;
167 int boot_rom_patch;
168 };
169
170 struct cxacru_data {
171 struct usbatm_data *usbatm;
172
173 const struct cxacru_modem_type *modem_type;
174
175 int line_status;
176 struct mutex adsl_state_serialize;
177 int adsl_status;
178 struct delayed_work poll_work;
179 u32 card_info[CXINF_MAX];
180 struct mutex poll_state_serialize;
181 enum cxacru_poll_state poll_state;
182
183 /* contol handles */
184 struct mutex cm_serialize;
185 u8 *rcv_buf;
186 u8 *snd_buf;
187 struct urb *rcv_urb;
188 struct urb *snd_urb;
189 struct completion rcv_done;
190 struct completion snd_done;
191 };
192
193 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
194 u8 *wdata, int wsize, u8 *rdata, int rsize);
195 static void cxacru_poll_status(struct work_struct *work);
196
197 /* Card info exported through sysfs */
198 #define CXACRU__ATTR_INIT(_name) \
199 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
200
201 #define CXACRU_CMD_INIT(_name) \
202 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
203 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
204
205 #define CXACRU_SET_INIT(_name) \
206 static DEVICE_ATTR(_name, S_IWUSR, \
207 NULL, cxacru_sysfs_store_##_name)
208
209 #define CXACRU_ATTR_INIT(_value, _type, _name) \
210 static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
211 struct device_attribute *attr, char *buf) \
212 { \
213 struct cxacru_data *instance = to_usbatm_driver_data(\
214 to_usb_interface(dev)); \
215 \
216 if (instance == NULL) \
217 return -ENODEV; \
218 \
219 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
220 } \
221 CXACRU__ATTR_INIT(_name)
222
223 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
224 #define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
225 #define CXACRU_SET_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
226 #define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
227
228 #define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
229 #define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
230 #define CXACRU_SET_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
231 #define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
232
233 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
234 {
235 return snprintf(buf, PAGE_SIZE, "%u\n", value);
236 }
237
238 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
239 {
240 return snprintf(buf, PAGE_SIZE, "%d\n", value);
241 }
242
243 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
244 {
245 if (likely(value >= 0)) {
246 return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
247 value / 100, value % 100);
248 } else {
249 value = -value;
250 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n",
251 value / 100, value % 100);
252 }
253 }
254
255 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
256 {
257 static char *str[] = { "no", "yes" };
258
259 if (unlikely(value >= ARRAY_SIZE(str)))
260 return snprintf(buf, PAGE_SIZE, "%u\n", value);
261 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
262 }
263
264 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
265 {
266 static char *str[] = { NULL, "not connected", "connected", "lost" };
267
268 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
269 return snprintf(buf, PAGE_SIZE, "%u\n", value);
270 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
271 }
272
273 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
274 {
275 static char *str[] = { "down", "attempting to activate",
276 "training", "channel analysis", "exchange", "up",
277 "waiting", "initialising"
278 };
279 if (unlikely(value >= ARRAY_SIZE(str)))
280 return snprintf(buf, PAGE_SIZE, "%u\n", value);
281 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
282 }
283
284 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
285 {
286 static char *str[] = {
287 "",
288 "ANSI T1.413",
289 "ITU-T G.992.1 (G.DMT)",
290 "ITU-T G.992.2 (G.LITE)"
291 };
292 if (unlikely(value >= ARRAY_SIZE(str)))
293 return snprintf(buf, PAGE_SIZE, "%u\n", value);
294 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
295 }
296
297 /*
298 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
299 * this data is already in atm_dev there's no point.
300 *
301 * MAC_ADDRESS_HIGH = 0x????5544
302 * MAC_ADDRESS_LOW = 0x33221100
303 * Where 00-55 are bytes 0-5 of the MAC.
304 */
305 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
306 struct device_attribute *attr, char *buf)
307 {
308 struct cxacru_data *instance = to_usbatm_driver_data(
309 to_usb_interface(dev));
310
311 if (instance == NULL || instance->usbatm->atm_dev == NULL)
312 return -ENODEV;
313
314 return snprintf(buf, PAGE_SIZE, "%pM\n",
315 instance->usbatm->atm_dev->esi);
316 }
317
318 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
319 struct device_attribute *attr, char *buf)
320 {
321 static char *str[] = { "running", "stopped" };
322 struct cxacru_data *instance = to_usbatm_driver_data(
323 to_usb_interface(dev));
324 u32 value;
325
326 if (instance == NULL)
327 return -ENODEV;
328
329 value = instance->card_info[CXINF_LINE_STARTABLE];
330 if (unlikely(value >= ARRAY_SIZE(str)))
331 return snprintf(buf, PAGE_SIZE, "%u\n", value);
332 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
333 }
334
335 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
336 struct device_attribute *attr, const char *buf, size_t count)
337 {
338 struct cxacru_data *instance = to_usbatm_driver_data(
339 to_usb_interface(dev));
340 int ret;
341 int poll = -1;
342 char str_cmd[8];
343 int len = strlen(buf);
344
345 if (!capable(CAP_NET_ADMIN))
346 return -EACCES;
347
348 ret = sscanf(buf, "%7s", str_cmd);
349 if (ret != 1)
350 return -EINVAL;
351 ret = 0;
352
353 if (instance == NULL)
354 return -ENODEV;
355
356 if (mutex_lock_interruptible(&instance->adsl_state_serialize))
357 return -ERESTARTSYS;
358
359 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
360 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
361 if (ret < 0) {
362 atm_err(instance->usbatm, "change adsl state:"
363 " CHIP_ADSL_LINE_STOP returned %d\n", ret);
364
365 ret = -EIO;
366 } else {
367 ret = len;
368 poll = CXPOLL_STOPPED;
369 }
370 }
371
372 /* Line status is only updated every second
373 * and the device appears to only react to
374 * START/STOP every second too. Wait 1.5s to
375 * be sure that restart will have an effect. */
376 if (!strcmp(str_cmd, "restart"))
377 msleep(1500);
378
379 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
380 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
381 if (ret < 0) {
382 atm_err(instance->usbatm, "change adsl state:"
383 " CHIP_ADSL_LINE_START returned %d\n", ret);
384
385 ret = -EIO;
386 } else {
387 ret = len;
388 poll = CXPOLL_POLLING;
389 }
390 }
391
392 if (!strcmp(str_cmd, "poll")) {
393 ret = len;
394 poll = CXPOLL_POLLING;
395 }
396
397 if (ret == 0) {
398 ret = -EINVAL;
399 poll = -1;
400 }
401
402 if (poll == CXPOLL_POLLING) {
403 mutex_lock(&instance->poll_state_serialize);
404 switch (instance->poll_state) {
405 case CXPOLL_STOPPED:
406 /* start polling */
407 instance->poll_state = CXPOLL_POLLING;
408 break;
409
410 case CXPOLL_STOPPING:
411 /* abort stop request */
412 instance->poll_state = CXPOLL_POLLING;
413 /* fall through */
414 case CXPOLL_POLLING:
415 case CXPOLL_SHUTDOWN:
416 /* don't start polling */
417 poll = -1;
418 }
419 mutex_unlock(&instance->poll_state_serialize);
420 } else if (poll == CXPOLL_STOPPED) {
421 mutex_lock(&instance->poll_state_serialize);
422 /* request stop */
423 if (instance->poll_state == CXPOLL_POLLING)
424 instance->poll_state = CXPOLL_STOPPING;
425 mutex_unlock(&instance->poll_state_serialize);
426 }
427
428 mutex_unlock(&instance->adsl_state_serialize);
429
430 if (poll == CXPOLL_POLLING)
431 cxacru_poll_status(&instance->poll_work.work);
432
433 return ret;
434 }
435
436 /* CM_REQUEST_CARD_DATA_GET times out, so no show attribute */
437
438 static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev,
439 struct device_attribute *attr, const char *buf, size_t count)
440 {
441 struct cxacru_data *instance = to_usbatm_driver_data(
442 to_usb_interface(dev));
443 int len = strlen(buf);
444 int ret, pos, num;
445 __le32 data[CMD_PACKET_SIZE / 4];
446
447 if (!capable(CAP_NET_ADMIN))
448 return -EACCES;
449
450 if (instance == NULL)
451 return -ENODEV;
452
453 pos = 0;
454 num = 0;
455 while (pos < len) {
456 int tmp;
457 u32 index;
458 u32 value;
459
460 ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp);
461 if (ret < 2)
462 return -EINVAL;
463 if (index > 0x7f)
464 return -EINVAL;
465 if (tmp < 0 || tmp > len - pos)
466 return -EINVAL;
467 pos += tmp;
468
469 /* skip trailing newline */
470 if (buf[pos] == '\n' && pos == len-1)
471 pos++;
472
473 data[num * 2 + 1] = cpu_to_le32(index);
474 data[num * 2 + 2] = cpu_to_le32(value);
475 num++;
476
477 /* send config values when data buffer is full
478 * or no more data
479 */
480 if (pos >= len || num >= CMD_MAX_CONFIG) {
481 char log[CMD_MAX_CONFIG * 12 + 1]; /* %02x=%08x */
482
483 data[0] = cpu_to_le32(num);
484 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
485 (u8 *) data, 4 + num * 8, NULL, 0);
486 if (ret < 0) {
487 atm_err(instance->usbatm,
488 "set card data returned %d\n", ret);
489 return -EIO;
490 }
491
492 for (tmp = 0; tmp < num; tmp++)
493 snprintf(log + tmp*12, 13, " %02x=%08x",
494 le32_to_cpu(data[tmp * 2 + 1]),
495 le32_to_cpu(data[tmp * 2 + 2]));
496 atm_info(instance->usbatm, "config%s\n", log);
497 num = 0;
498 }
499 }
500
501 return len;
502 }
503
504 /*
505 * All device attributes are included in CXACRU_ALL_FILES
506 * so that the same list can be used multiple times:
507 * INIT (define the device attributes)
508 * CREATE (create all the device files)
509 * REMOVE (remove all the device files)
510 *
511 * With the last two being defined as needed in the functions
512 * they are used in before calling CXACRU_ALL_FILES()
513 */
514 #define CXACRU_ALL_FILES(_action) \
515 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \
516 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \
517 CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \
518 CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \
519 CXACRU__ATTR_##_action( mac_address); \
520 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \
521 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \
522 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \
523 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \
524 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \
525 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \
526 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \
527 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \
528 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \
529 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \
530 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \
531 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \
532 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \
533 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \
534 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \
535 CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \
536 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \
537 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \
538 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \
539 CXACRU_CMD_##_action( adsl_state); \
540 CXACRU_SET_##_action( adsl_config);
541
542 CXACRU_ALL_FILES(INIT);
543
544 /* the following three functions are stolen from drivers/usb/core/message.c */
545 static void cxacru_blocking_completion(struct urb *urb)
546 {
547 complete(urb->context);
548 }
549
550 struct cxacru_timer {
551 struct timer_list timer;
552 struct urb *urb;
553 };
554
555 static void cxacru_timeout_kill(struct timer_list *t)
556 {
557 struct cxacru_timer *timer = from_timer(timer, t, timer);
558
559 usb_unlink_urb(timer->urb);
560 }
561
562 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
563 int *actual_length)
564 {
565 struct cxacru_timer timer = {
566 .urb = urb,
567 };
568
569 timer_setup_on_stack(&timer.timer, cxacru_timeout_kill, 0);
570 mod_timer(&timer.timer, jiffies + msecs_to_jiffies(CMD_TIMEOUT));
571 wait_for_completion(done);
572 del_timer_sync(&timer.timer);
573 destroy_timer_on_stack(&timer.timer);
574
575 if (actual_length)
576 *actual_length = urb->actual_length;
577 return urb->status; /* must read status after completion */
578 }
579
580 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
581 u8 *wdata, int wsize, u8 *rdata, int rsize)
582 {
583 int ret, actlen;
584 int offb, offd;
585 const int stride = CMD_PACKET_SIZE - 4;
586 u8 *wbuf = instance->snd_buf;
587 u8 *rbuf = instance->rcv_buf;
588 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
589 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
590
591 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
592 if (printk_ratelimit())
593 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
594 wbuflen, rbuflen);
595 ret = -ENOMEM;
596 goto err;
597 }
598
599 mutex_lock(&instance->cm_serialize);
600
601 /* submit reading urb before the writing one */
602 init_completion(&instance->rcv_done);
603 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
604 if (ret < 0) {
605 if (printk_ratelimit())
606 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
607 cm, ret);
608 goto fail;
609 }
610
611 memset(wbuf, 0, wbuflen);
612 /* handle wsize == 0 */
613 wbuf[0] = cm;
614 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
615 wbuf[offb] = cm;
616 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
617 }
618
619 instance->snd_urb->transfer_buffer_length = wbuflen;
620 init_completion(&instance->snd_done);
621 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
622 if (ret < 0) {
623 if (printk_ratelimit())
624 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
625 cm, ret);
626 goto fail;
627 }
628
629 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
630 if (ret < 0) {
631 if (printk_ratelimit())
632 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
633 goto fail;
634 }
635
636 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
637 if (ret < 0) {
638 if (printk_ratelimit())
639 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
640 goto fail;
641 }
642 if (actlen % CMD_PACKET_SIZE || !actlen) {
643 if (printk_ratelimit())
644 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
645 cm, actlen);
646 ret = -EIO;
647 goto fail;
648 }
649
650 /* check the return status and copy the data to the output buffer, if needed */
651 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
652 if (rbuf[offb] != cm) {
653 if (printk_ratelimit())
654 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
655 rbuf[offb], cm);
656 ret = -EIO;
657 goto fail;
658 }
659 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
660 if (printk_ratelimit())
661 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
662 cm, rbuf[offb + 1]);
663 ret = -EIO;
664 goto fail;
665 }
666 if (offd >= rsize)
667 break;
668 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
669 offd += stride;
670 }
671
672 ret = offd;
673 usb_dbg(instance->usbatm, "cm %#x\n", cm);
674 fail:
675 mutex_unlock(&instance->cm_serialize);
676 err:
677 return ret;
678 }
679
680 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
681 u32 *data, int size)
682 {
683 int ret, len;
684 __le32 *buf;
685 int offb;
686 unsigned int offd;
687 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
688 int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
689
690 buf = kmalloc(buflen, GFP_KERNEL);
691 if (!buf)
692 return -ENOMEM;
693
694 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
695 if (ret < 0)
696 goto cleanup;
697
698 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
699 len = ret / 4;
700 for (offb = 0; offb < len; ) {
701 int l = le32_to_cpu(buf[offb++]);
702
703 if (l < 0 || l > stride || l > (len - offb) / 2) {
704 if (printk_ratelimit())
705 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
706 cm, l);
707 ret = -EIO;
708 goto cleanup;
709 }
710 while (l--) {
711 offd = le32_to_cpu(buf[offb++]);
712 if (offd >= size) {
713 if (printk_ratelimit())
714 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
715 offd, cm);
716 ret = -EIO;
717 goto cleanup;
718 }
719 data[offd] = le32_to_cpu(buf[offb++]);
720 }
721 }
722
723 ret = 0;
724
725 cleanup:
726 kfree(buf);
727 return ret;
728 }
729
730 static int cxacru_card_status(struct cxacru_data *instance)
731 {
732 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
733
734 if (ret < 0) { /* firmware not loaded */
735 usb_dbg(instance->usbatm, "cxacru_adsl_start: CARD_GET_STATUS returned %d\n", ret);
736 return ret;
737 }
738 return 0;
739 }
740
741 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
742 struct atm_dev *atm_dev)
743 {
744 struct usb_interface *intf = usbatm_instance->usb_intf;
745
746 #define CXACRU_DEVICE_REMOVE_FILE(_name) \
747 device_remove_file(&intf->dev, &dev_attr_##_name);
748 CXACRU_ALL_FILES(REMOVE);
749 #undef CXACRU_DEVICE_REMOVE_FILE
750 }
751
752 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
753 struct atm_dev *atm_dev)
754 {
755 struct cxacru_data *instance = usbatm_instance->driver_data;
756 struct usb_interface *intf = usbatm_instance->usb_intf;
757 int ret;
758 int start_polling = 1;
759
760 dev_dbg(&intf->dev, "%s\n", __func__);
761
762 /* Read MAC address */
763 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
764 atm_dev->esi, sizeof(atm_dev->esi));
765 if (ret < 0) {
766 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
767 return ret;
768 }
769
770 #define CXACRU_DEVICE_CREATE_FILE(_name) \
771 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
772 if (unlikely(ret)) \
773 goto fail_sysfs;
774 CXACRU_ALL_FILES(CREATE);
775 #undef CXACRU_DEVICE_CREATE_FILE
776
777 /* start ADSL */
778 mutex_lock(&instance->adsl_state_serialize);
779 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
780 if (ret < 0)
781 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
782
783 /* Start status polling */
784 mutex_lock(&instance->poll_state_serialize);
785 switch (instance->poll_state) {
786 case CXPOLL_STOPPED:
787 /* start polling */
788 instance->poll_state = CXPOLL_POLLING;
789 break;
790
791 case CXPOLL_STOPPING:
792 /* abort stop request */
793 instance->poll_state = CXPOLL_POLLING;
794 /* fall through */
795 case CXPOLL_POLLING:
796 case CXPOLL_SHUTDOWN:
797 /* don't start polling */
798 start_polling = 0;
799 }
800 mutex_unlock(&instance->poll_state_serialize);
801 mutex_unlock(&instance->adsl_state_serialize);
802
803 printk(KERN_INFO "%s%d: %s %pM\n", atm_dev->type, atm_dev->number,
804 usbatm_instance->description, atm_dev->esi);
805
806 if (start_polling)
807 cxacru_poll_status(&instance->poll_work.work);
808 return 0;
809
810 fail_sysfs:
811 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
812 cxacru_remove_device_files(usbatm_instance, atm_dev);
813 return ret;
814 }
815
816 static void cxacru_poll_status(struct work_struct *work)
817 {
818 struct cxacru_data *instance =
819 container_of(work, struct cxacru_data, poll_work.work);
820 u32 buf[CXINF_MAX] = {};
821 struct usbatm_data *usbatm = instance->usbatm;
822 struct atm_dev *atm_dev = usbatm->atm_dev;
823 int keep_polling = 1;
824 int ret;
825
826 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
827 if (ret < 0) {
828 if (ret != -ESHUTDOWN)
829 atm_warn(usbatm, "poll status: error %d\n", ret);
830
831 mutex_lock(&instance->poll_state_serialize);
832 if (instance->poll_state != CXPOLL_SHUTDOWN) {
833 instance->poll_state = CXPOLL_STOPPED;
834
835 if (ret != -ESHUTDOWN)
836 atm_warn(usbatm, "polling disabled, set adsl_state"
837 " to 'start' or 'poll' to resume\n");
838 }
839 mutex_unlock(&instance->poll_state_serialize);
840 goto reschedule;
841 }
842
843 memcpy(instance->card_info, buf, sizeof(instance->card_info));
844
845 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
846 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
847
848 switch (instance->adsl_status) {
849 case 0:
850 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
851 break;
852
853 case 1:
854 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
855 break;
856
857 default:
858 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
859 break;
860 }
861 }
862
863 if (instance->line_status == buf[CXINF_LINE_STATUS])
864 goto reschedule;
865
866 instance->line_status = buf[CXINF_LINE_STATUS];
867 switch (instance->line_status) {
868 case 0:
869 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
870 atm_info(usbatm, "ADSL line: down\n");
871 break;
872
873 case 1:
874 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
875 atm_info(usbatm, "ADSL line: attempting to activate\n");
876 break;
877
878 case 2:
879 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
880 atm_info(usbatm, "ADSL line: training\n");
881 break;
882
883 case 3:
884 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
885 atm_info(usbatm, "ADSL line: channel analysis\n");
886 break;
887
888 case 4:
889 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
890 atm_info(usbatm, "ADSL line: exchange\n");
891 break;
892
893 case 5:
894 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
895 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_FOUND);
896
897 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
898 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
899 break;
900
901 case 6:
902 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
903 atm_info(usbatm, "ADSL line: waiting\n");
904 break;
905
906 case 7:
907 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_LOST);
908 atm_info(usbatm, "ADSL line: initializing\n");
909 break;
910
911 default:
912 atm_dev_signal_change(atm_dev, ATM_PHY_SIG_UNKNOWN);
913 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
914 break;
915 }
916 reschedule:
917
918 mutex_lock(&instance->poll_state_serialize);
919 if (instance->poll_state == CXPOLL_STOPPING &&
920 instance->adsl_status == 1 && /* stopped */
921 instance->line_status == 0) /* down */
922 instance->poll_state = CXPOLL_STOPPED;
923
924 if (instance->poll_state == CXPOLL_STOPPED)
925 keep_polling = 0;
926 mutex_unlock(&instance->poll_state_serialize);
927
928 if (keep_polling)
929 schedule_delayed_work(&instance->poll_work,
930 round_jiffies_relative(POLL_INTERVAL*HZ));
931 }
932
933 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
934 u8 code1, u8 code2, u32 addr, const u8 *data, int size)
935 {
936 int ret;
937 u8 *buf;
938 int offd, offb;
939 const int stride = CMD_PACKET_SIZE - 8;
940
941 buf = (u8 *) __get_free_page(GFP_KERNEL);
942 if (!buf)
943 return -ENOMEM;
944
945 offb = offd = 0;
946 do {
947 int l = min_t(int, stride, size - offd);
948
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 int ret = cxacru_find_firmware(instance, "fw", &fw);
1096
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 return -ENOMEM;
1138
1139 instance->usbatm = usbatm_instance;
1140 instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1141
1142 mutex_init(&instance->poll_state_serialize);
1143 instance->poll_state = CXPOLL_STOPPED;
1144 instance->line_status = -1;
1145 instance->adsl_status = -1;
1146
1147 mutex_init(&instance->adsl_state_serialize);
1148
1149 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1150 if (!instance->rcv_buf) {
1151 usb_dbg(usbatm_instance, "cxacru_bind: no memory for rcv_buf\n");
1152 ret = -ENOMEM;
1153 goto fail;
1154 }
1155 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1156 if (!instance->snd_buf) {
1157 usb_dbg(usbatm_instance, "cxacru_bind: no memory for snd_buf\n");
1158 ret = -ENOMEM;
1159 goto fail;
1160 }
1161 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1162 if (!instance->rcv_urb) {
1163 ret = -ENOMEM;
1164 goto fail;
1165 }
1166 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1167 if (!instance->snd_urb) {
1168 ret = -ENOMEM;
1169 goto fail;
1170 }
1171
1172 if (!cmd_ep) {
1173 usb_dbg(usbatm_instance, "cxacru_bind: no command endpoint\n");
1174 ret = -ENODEV;
1175 goto fail;
1176 }
1177
1178 if ((cmd_ep->desc.bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
1179 == USB_ENDPOINT_XFER_INT) {
1180 usb_fill_int_urb(instance->rcv_urb,
1181 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1182 instance->rcv_buf, PAGE_SIZE,
1183 cxacru_blocking_completion, &instance->rcv_done, 1);
1184
1185 usb_fill_int_urb(instance->snd_urb,
1186 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1187 instance->snd_buf, PAGE_SIZE,
1188 cxacru_blocking_completion, &instance->snd_done, 4);
1189 } else {
1190 usb_fill_bulk_urb(instance->rcv_urb,
1191 usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD),
1192 instance->rcv_buf, PAGE_SIZE,
1193 cxacru_blocking_completion, &instance->rcv_done);
1194
1195 usb_fill_bulk_urb(instance->snd_urb,
1196 usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
1197 instance->snd_buf, PAGE_SIZE,
1198 cxacru_blocking_completion, &instance->snd_done);
1199 }
1200
1201 mutex_init(&instance->cm_serialize);
1202
1203 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1204
1205 usbatm_instance->driver_data = instance;
1206
1207 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1208
1209 return 0;
1210
1211 fail:
1212 free_page((unsigned long) instance->snd_buf);
1213 free_page((unsigned long) instance->rcv_buf);
1214 usb_free_urb(instance->snd_urb);
1215 usb_free_urb(instance->rcv_urb);
1216 kfree(instance);
1217
1218 return ret;
1219 }
1220
1221 static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1222 struct usb_interface *intf)
1223 {
1224 struct cxacru_data *instance = usbatm_instance->driver_data;
1225 int is_polling = 1;
1226
1227 usb_dbg(usbatm_instance, "cxacru_unbind entered\n");
1228
1229 if (!instance) {
1230 usb_dbg(usbatm_instance, "cxacru_unbind: NULL instance!\n");
1231 return;
1232 }
1233
1234 mutex_lock(&instance->poll_state_serialize);
1235 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1236
1237 /* ensure that status polling continues unless
1238 * it has already stopped */
1239 if (instance->poll_state == CXPOLL_STOPPED)
1240 is_polling = 0;
1241
1242 /* stop polling from being stopped or started */
1243 instance->poll_state = CXPOLL_SHUTDOWN;
1244 mutex_unlock(&instance->poll_state_serialize);
1245
1246 if (is_polling)
1247 cancel_delayed_work_sync(&instance->poll_work);
1248
1249 usb_kill_urb(instance->snd_urb);
1250 usb_kill_urb(instance->rcv_urb);
1251 usb_free_urb(instance->snd_urb);
1252 usb_free_urb(instance->rcv_urb);
1253
1254 free_page((unsigned long) instance->snd_buf);
1255 free_page((unsigned long) instance->rcv_buf);
1256
1257 kfree(instance);
1258
1259 usbatm_instance->driver_data = NULL;
1260 }
1261
1262 static const struct cxacru_modem_type cxacru_cafe = {
1263 .pll_f_clk = 0x02d874df,
1264 .pll_b_clk = 0x0196a51a,
1265 .boot_rom_patch = 1,
1266 };
1267
1268 static const struct cxacru_modem_type cxacru_cb00 = {
1269 .pll_f_clk = 0x5,
1270 .pll_b_clk = 0x3,
1271 .boot_rom_patch = 0,
1272 };
1273
1274 static const struct usb_device_id cxacru_usb_ids[] = {
1275 { /* V = Conexant P = ADSL modem (Euphrates project) */
1276 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
1277 },
1278 { /* V = Conexant P = ADSL modem (Hasbani project) */
1279 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
1280 },
1281 { /* V = Conexant P = ADSL modem */
1282 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1283 },
1284 { /* V = Conexant P = ADSL modem (Well PTI-800) */
1285 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
1286 },
1287 { /* V = Conexant P = ADSL modem */
1288 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
1289 },
1290 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */
1291 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00
1292 },
1293 { /* V = Olitec P = ADSL modem version 2 */
1294 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
1295 },
1296 { /* V = Olitec P = ADSL modem version 3 */
1297 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
1298 },
1299 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
1300 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
1301 },
1302 { /* V = Zoom P = 5510 */
1303 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
1304 },
1305 { /* V = Draytek P = Vigor 318 */
1306 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
1307 },
1308 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
1309 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
1310 },
1311 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
1312 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
1313 },
1314 { /* V = Aethra P = Starmodem UM1020 */
1315 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
1316 },
1317 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
1318 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
1319 },
1320 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
1321 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1322 },
1323 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
1324 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
1325 },
1326 {}
1327 };
1328
1329 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1330
1331 static struct usbatm_driver cxacru_driver = {
1332 .driver_name = cxacru_driver_name,
1333 .bind = cxacru_bind,
1334 .heavy_init = cxacru_heavy_init,
1335 .unbind = cxacru_unbind,
1336 .atm_start = cxacru_atm_start,
1337 .atm_stop = cxacru_remove_device_files,
1338 .bulk_in = CXACRU_EP_DATA,
1339 .bulk_out = CXACRU_EP_DATA,
1340 .rx_padding = 3,
1341 .tx_padding = 11,
1342 };
1343
1344 static int cxacru_usb_probe(struct usb_interface *intf,
1345 const struct usb_device_id *id)
1346 {
1347 struct usb_device *usb_dev = interface_to_usbdev(intf);
1348 char buf[15];
1349
1350 /* Avoid ADSL routers (cx82310_eth).
1351 * Abort if bDeviceClass is 0xff and iProduct is "USB NET CARD".
1352 */
1353 if (usb_dev->descriptor.bDeviceClass == USB_CLASS_VENDOR_SPEC
1354 && usb_string(usb_dev, usb_dev->descriptor.iProduct,
1355 buf, sizeof(buf)) > 0) {
1356 if (!strcmp(buf, "USB NET CARD")) {
1357 dev_info(&intf->dev, "ignoring cx82310_eth device\n");
1358 return -ENODEV;
1359 }
1360 }
1361
1362 return usbatm_usb_probe(intf, id, &cxacru_driver);
1363 }
1364
1365 static struct usb_driver cxacru_usb_driver = {
1366 .name = cxacru_driver_name,
1367 .probe = cxacru_usb_probe,
1368 .disconnect = usbatm_usb_disconnect,
1369 .id_table = cxacru_usb_ids
1370 };
1371
1372 module_usb_driver(cxacru_usb_driver);
1373
1374 MODULE_AUTHOR(DRIVER_AUTHOR);
1375 MODULE_DESCRIPTION(DRIVER_DESC);
1376 MODULE_LICENSE("GPL");
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