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