projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Merge master.kernel.org:/pub/scm/linux/kernel/git/lethal/sh-2.6.23
[linux-2.6-block.git] / drivers / usb / atm / cxacru.c
CommitLineData
1b0e6146
DS		 1/******************************************************************************
2 * cxacru.c - driver for USB ADSL modems based on
3 * Conexant AccessRunner chipset
4 *
5 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
6 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
6a02c996 7 * Copyright (C) 2007 Simon Arlott
1b0e6146
DS		 8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the Free
11 * Software Foundation; either version 2 of the License, or (at your option)
12 * any later version.
13 *
14 * This program is distributed in the hope that it will be useful, but WITHOUT
15 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * more details.
18 *
19 * You should have received a copy of the GNU General Public License along with
20 * this program; if not, write to the Free Software Foundation, Inc., 59
21 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22 *
23 ******************************************************************************/
24
25/*
26 * Credit is due for Josep Comas, who created the original patch to speedtch.c
27 * to support the different padding used by the AccessRunner (now generalized
28 * into usbatm), and the userspace firmware loading utility.
29 */
30
31#include <linux/module.h>
32#include <linux/moduleparam.h>
33#include <linux/kernel.h>
34#include <linux/timer.h>
35#include <linux/errno.h>
36#include <linux/slab.h>
37#include <linux/init.h>
fa70fe44 38#include <linux/device.h>
1b0e6146 39#include <linux/firmware.h>
ab3c81ff 40#include <linux/mutex.h>
1b0e6146
DS		 41
42#include "usbatm.h"
43
fa70fe44
SA		 44#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
45#define DRIVER_VERSION "0.3"
1b0e6146
DS		 46#define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
47
48static const char cxacru_driver_name[] = "cxacru";
49
50#define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
51#define CXACRU_EP_DATA 0x02 /* Bulk in/out */
52
53#define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
54
55/* Addresses */
56#define PLLFCLK_ADDR 0x00350068
57#define PLLBCLK_ADDR 0x0035006c
58#define SDRAMEN_ADDR 0x00350010
59#define FW_ADDR 0x00801000
60#define BR_ADDR 0x00180600
61#define SIG_ADDR 0x00180500
62#define BR_STACK_ADDR 0x00187f10
63
64/* Values */
65#define SDRAM_ENA 0x1
66
67#define CMD_TIMEOUT 2000 /* msecs */
fa70fe44 68#define POLL_INTERVAL 1 /* secs */
1b0e6146
DS		 69
70/* commands for interaction with the modem through the control channel before
71 * firmware is loaded */
72enum cxacru_fw_request {
73 FW_CMD_ERR,
74 FW_GET_VER,
75 FW_READ_MEM,
76 FW_WRITE_MEM,
77 FW_RMW_MEM,
78 FW_CHECKSUM_MEM,
79 FW_GOTO_MEM,
80};
81
82/* commands for interaction with the modem through the control channel once
83 * firmware is loaded */
84enum cxacru_cm_request {
85 CM_REQUEST_UNDEFINED = 0x80,
86 CM_REQUEST_TEST,
87 CM_REQUEST_CHIP_GET_MAC_ADDRESS,
88 CM_REQUEST_CHIP_GET_DP_VERSIONS,
89 CM_REQUEST_CHIP_ADSL_LINE_START,
90 CM_REQUEST_CHIP_ADSL_LINE_STOP,
91 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
92 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
93 CM_REQUEST_CARD_INFO_GET,
94 CM_REQUEST_CARD_DATA_GET,
95 CM_REQUEST_CARD_DATA_SET,
96 CM_REQUEST_COMMAND_HW_IO,
97 CM_REQUEST_INTERFACE_HW_IO,
98 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
99 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
100 CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
101 CM_REQUEST_CARD_GET_STATUS,
102 CM_REQUEST_CARD_GET_MAC_ADDRESS,
103 CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
104 CM_REQUEST_MAX,
105};
106
107/* reply codes to the commands above */
108enum cxacru_cm_status {
109 CM_STATUS_UNDEFINED,
110 CM_STATUS_SUCCESS,
111 CM_STATUS_ERROR,
112 CM_STATUS_UNSUPPORTED,
113 CM_STATUS_UNIMPLEMENTED,
114 CM_STATUS_PARAMETER_ERROR,
115 CM_STATUS_DBG_LOOPBACK,
116 CM_STATUS_MAX,
117};
118
119/* indices into CARD_INFO_GET return array */
120enum cxacru_info_idx {
121 CXINF_DOWNSTREAM_RATE,
122 CXINF_UPSTREAM_RATE,
123 CXINF_LINK_STATUS,
124 CXINF_LINE_STATUS,
125 CXINF_MAC_ADDRESS_HIGH,
126 CXINF_MAC_ADDRESS_LOW,
127 CXINF_UPSTREAM_SNR_MARGIN,
128 CXINF_DOWNSTREAM_SNR_MARGIN,
129 CXINF_UPSTREAM_ATTENUATION,
130 CXINF_DOWNSTREAM_ATTENUATION,
131 CXINF_TRANSMITTER_POWER,
132 CXINF_UPSTREAM_BITS_PER_FRAME,
133 CXINF_DOWNSTREAM_BITS_PER_FRAME,
134 CXINF_STARTUP_ATTEMPTS,
135 CXINF_UPSTREAM_CRC_ERRORS,
136 CXINF_DOWNSTREAM_CRC_ERRORS,
137 CXINF_UPSTREAM_FEC_ERRORS,
138 CXINF_DOWNSTREAM_FEC_ERRORS,
139 CXINF_UPSTREAM_HEC_ERRORS,
140 CXINF_DOWNSTREAM_HEC_ERRORS,
141 CXINF_LINE_STARTABLE,
142 CXINF_MODULATION,
143 CXINF_ADSL_HEADEND,
144 CXINF_ADSL_HEADEND_ENVIRONMENT,
145 CXINF_CONTROLLER_VERSION,
146 /* dunno what the missing two mean */
147 CXINF_MAX = 0x1c,
148};
149
6a02c996
SA		 150enum cxacru_poll_state {
151 CXPOLL_STOPPING,
152 CXPOLL_STOPPED,
153 CXPOLL_POLLING,
154 CXPOLL_SHUTDOWN
155};
156
1b0e6146
DS		 157struct cxacru_modem_type {
158 u32 pll_f_clk;
159 u32 pll_b_clk;
160 int boot_rom_patch;
161};
162
163struct cxacru_data {
164 struct usbatm_data *usbatm;
165
166 const struct cxacru_modem_type *modem_type;
167
168 int line_status;
6a02c996
SA		 169 struct mutex adsl_state_serialize;
170 int adsl_status;
c4028958 171 struct delayed_work poll_work;
fa70fe44 172 u32 card_info[CXINF_MAX];
6a02c996 173 struct mutex poll_state_serialize;
87e71b47 174 enum cxacru_poll_state poll_state;
1b0e6146
DS		 175
176 /* contol handles */
ab3c81ff 177 struct mutex cm_serialize;
1b0e6146
DS		 178 u8 *rcv_buf;
179 u8 *snd_buf;
180 struct urb *rcv_urb;
181 struct urb *snd_urb;
182 struct completion rcv_done;
183 struct completion snd_done;
184};
185
6a02c996
SA		 186static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
187 u8 *wdata, int wsize, u8 *rdata, int rsize);
188static void cxacru_poll_status(struct work_struct *work);
189
fa70fe44
SA		 190/* Card info exported through sysfs */
191#define CXACRU__ATTR_INIT(_name) \
192static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
193
6a02c996
SA		 194#define CXACRU_CMD_INIT(_name) \
195static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
196 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
197
fa70fe44
SA		 198#define CXACRU_ATTR_INIT(_value, _type, _name) \
199static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
200 struct device_attribute *attr, char *buf) \
201{ \
202 struct usb_interface *intf = to_usb_interface(dev); \
203 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf); \
204 struct cxacru_data *instance = usbatm_instance->driver_data; \
205 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
206} \
207CXACRU__ATTR_INIT(_name)
208
209#define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
6a02c996 210#define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
fa70fe44
SA		 211#define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
212
213#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
6a02c996 214#define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
fa70fe44
SA		 215#define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
216
217static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
218{
219 return snprintf(buf, PAGE_SIZE, "%u\n", value);
220}
221
222static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
223{
224 return snprintf(buf, PAGE_SIZE, "%d\n", value);
225}
226
227static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
228{
87e71b47
SA		 229 return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
230 value / 100, abs(value) % 100);
fa70fe44
SA		 231}
232
233static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
234{
87e71b47
SA		 235 static char *str[] = { "no", "yes" };
236 if (unlikely(value >= ARRAY_SIZE(str)))
237 return snprintf(buf, PAGE_SIZE, "%u\n", value);
238 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 239}
240
241static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
242{
87e71b47
SA		 243 static char *str[] = { NULL, "not connected", "connected", "lost" };
244 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
245 return snprintf(buf, PAGE_SIZE, "%u\n", value);
246 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 247}
248
249static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
250{
87e71b47
SA		 251 static char *str[] = { "down", "attempting to activate",
252 "training", "channel analysis", "exchange", "up",
253 "waiting", "initialising"
254 };
255 if (unlikely(value >= ARRAY_SIZE(str)))
256 return snprintf(buf, PAGE_SIZE, "%u\n", value);
257 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 258}
259
260static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
261{
87e71b47
SA		 262 static char *str[] = {
263 NULL,
264 "ANSI T1.413",
265 "ITU-T G.992.1 (G.DMT)",
266 "ITU-T G.992.2 (G.LITE)"
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]);
fa70fe44
SA		 271}
272
273/*
274 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
275 * this data is already in atm_dev there's no point.
276 *
277 * MAC_ADDRESS_HIGH = 0x????5544
278 * MAC_ADDRESS_LOW = 0x33221100
279 * Where 00-55 are bytes 0-5 of the MAC.
280 */
281static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
282 struct device_attribute *attr, char *buf)
283{
284 struct usb_interface *intf = to_usb_interface(dev);
285 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
286 struct atm_dev *atm_dev = usbatm_instance->atm_dev;
287
288 return snprintf(buf, PAGE_SIZE, "%02x:%02x:%02x:%02x:%02x:%02x\n",
289 atm_dev->esi[0], atm_dev->esi[1], atm_dev->esi[2],
290 atm_dev->esi[3], atm_dev->esi[4], atm_dev->esi[5]);
291}
292
6a02c996
SA		 293static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
294 struct device_attribute *attr, char *buf)
295{
296 struct usb_interface *intf = to_usb_interface(dev);
297 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
298 struct cxacru_data *instance = usbatm_instance->driver_data;
299 u32 value = instance->card_info[CXINF_LINE_STARTABLE];
300
87e71b47
SA		 301 static char *str[] = { "running", "stopped" };
302 if (unlikely(value >= ARRAY_SIZE(str)))
303 return snprintf(buf, PAGE_SIZE, "%u\n", value);
304 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
6a02c996
SA		 305}
306
307static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
308 struct device_attribute *attr, const char *buf, size_t count)
309{
310 struct usb_interface *intf = to_usb_interface(dev);
311 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
312 struct cxacru_data *instance = usbatm_instance->driver_data;
313 int ret;
314 int poll = -1;
315 char str_cmd[8];
316 int len = strlen(buf);
317
318 if (!capable(CAP_NET_ADMIN))
319 return -EACCES;
320
321 ret = sscanf(buf, "%7s", str_cmd);
322 if (ret != 1)
323 return -EINVAL;
324 ret = 0;
325
326 if (mutex_lock_interruptible(&instance->adsl_state_serialize))
327 return -ERESTARTSYS;
328
329 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
330 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
331 if (ret < 0) {
332 atm_err(usbatm_instance, "change adsl state:"
333 " CHIP_ADSL_LINE_STOP returned %d\n", ret);
334
335 ret = -EIO;
336 } else {
337 ret = len;
338 poll = CXPOLL_STOPPED;
339 }
340 }
341
342 /* Line status is only updated every second
343 * and the device appears to only react to
344 * START/STOP every second too. Wait 1.5s to
345 * be sure that restart will have an effect. */
346 if (!strcmp(str_cmd, "restart"))
347 msleep(1500);
348
349 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
350 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
351 if (ret < 0) {
352 atm_err(usbatm_instance, "change adsl state:"
353 " CHIP_ADSL_LINE_START returned %d\n", ret);
354
355 ret = -EIO;
356 } else {
357 ret = len;
358 poll = CXPOLL_POLLING;
359 }
360 }
361
362 if (!strcmp(str_cmd, "poll")) {
363 ret = len;
364 poll = CXPOLL_POLLING;
365 }
366
367 if (ret == 0) {
368 ret = -EINVAL;
369 poll = -1;
370 }
371
372 if (poll == CXPOLL_POLLING) {
373 mutex_lock(&instance->poll_state_serialize);
374 switch (instance->poll_state) {
375 case CXPOLL_STOPPED:
376 /* start polling */
377 instance->poll_state = CXPOLL_POLLING;
378 break;
379
380 case CXPOLL_STOPPING:
381 /* abort stop request */
382 instance->poll_state = CXPOLL_POLLING;
383 case CXPOLL_POLLING:
384 case CXPOLL_SHUTDOWN:
385 /* don't start polling */
386 poll = -1;
387 }
388 mutex_unlock(&instance->poll_state_serialize);
389 } else if (poll == CXPOLL_STOPPED) {
390 mutex_lock(&instance->poll_state_serialize);
391 /* request stop */
392 if (instance->poll_state == CXPOLL_POLLING)
393 instance->poll_state = CXPOLL_STOPPING;
394 mutex_unlock(&instance->poll_state_serialize);
395 }
396
397 mutex_unlock(&instance->adsl_state_serialize);
398
399 if (poll == CXPOLL_POLLING)
400 cxacru_poll_status(&instance->poll_work.work);
401
402 return ret;
403}
404
fa70fe44
SA		 405/*
406 * All device attributes are included in CXACRU_ALL_FILES
407 * so that the same list can be used multiple times:
408 * INIT (define the device attributes)
409 * CREATE (create all the device files)
410 * REMOVE (remove all the device files)
411 *
412 * With the last two being defined as needed in the functions
413 * they are used in before calling CXACRU_ALL_FILES()
414 */
415#define CXACRU_ALL_FILES(_action) \
416CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \
417CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \
418CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \
419CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \
420CXACRU__ATTR_##_action( mac_address); \
421CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \
422CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \
423CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \
424CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \
425CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \
426CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \
427CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \
428CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \
429CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \
430CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \
431CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \
432CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \
433CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \
434CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \
435CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \
436CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \
437CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \
438CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \
6a02c996
SA		 439CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \
440CXACRU_CMD_##_action( adsl_state);
fa70fe44
SA		 441
442CXACRU_ALL_FILES(INIT);
443
1b0e6146 444/* the following three functions are stolen from drivers/usb/core/message.c */
7d12e780 445static void cxacru_blocking_completion(struct urb *urb)
1b0e6146
DS		 446{
447 complete((struct completion *)urb->context);
448}
449
450static void cxacru_timeout_kill(unsigned long data)
451{
452 usb_unlink_urb((struct urb *) data);
453}
454
455static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
456 int* actual_length)
457{
458 struct timer_list timer;
1b0e6146
DS		 459
460 init_timer(&timer);
461 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
462 timer.data = (unsigned long) urb;
463 timer.function = cxacru_timeout_kill;
464 add_timer(&timer);
465 wait_for_completion(done);
1b0e6146
DS		 466 del_timer_sync(&timer);
467
468 if (actual_length)
469 *actual_length = urb->actual_length;
3b79cc26 470 return urb->status; /* must read status after completion */
1b0e6146
DS		 471}
472
473static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
474 u8 *wdata, int wsize, u8 *rdata, int rsize)
475{
476 int ret, actlen;
477 int offb, offd;
478 const int stride = CMD_PACKET_SIZE - 4;
479 u8 *wbuf = instance->snd_buf;
480 u8 *rbuf = instance->rcv_buf;
481 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
482 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
483
484 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
485 dbg("too big transfer requested");
486 ret = -ENOMEM;
487 goto fail;
488 }
489
ab3c81ff 490 mutex_lock(&instance->cm_serialize);
1b0e6146
DS		 491
492 /* submit reading urb before the writing one */
493 init_completion(&instance->rcv_done);
494 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
495 if (ret < 0) {
496 dbg("submitting read urb for cm %#x failed", cm);
497 ret = ret;
498 goto fail;
499 }
500
501 memset(wbuf, 0, wbuflen);
502 /* handle wsize == 0 */
503 wbuf[0] = cm;
504 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
505 wbuf[offb] = cm;
506 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
507 }
508
509 instance->snd_urb->transfer_buffer_length = wbuflen;
510 init_completion(&instance->snd_done);
511 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
512 if (ret < 0) {
513 dbg("submitting write urb for cm %#x failed", cm);
514 ret = ret;
515 goto fail;
516 }
517
518 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
519 if (ret < 0) {
520 dbg("sending cm %#x failed", cm);
521 ret = ret;
522 goto fail;
523 }
524
525 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
526 if (ret < 0) {
527 dbg("receiving cm %#x failed", cm);
528 ret = ret;
529 goto fail;
530 }
531 if (actlen % CMD_PACKET_SIZE || !actlen) {
532 dbg("response is not a positive multiple of %d: %#x",
533 CMD_PACKET_SIZE, actlen);
534 ret = -EIO;
535 goto fail;
536 }
537
538 /* check the return status and copy the data to the output buffer, if needed */
539 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
540 if (rbuf[offb] != cm) {
541 dbg("wrong cm %#x in response", rbuf[offb]);
542 ret = -EIO;
543 goto fail;
544 }
545 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
546 dbg("response failed: %#x", rbuf[offb + 1]);
547 ret = -EIO;
548 goto fail;
549 }
550 if (offd >= rsize)
551 break;
552 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
553 offd += stride;
554 }
555
556 ret = offd;
557 dbg("cm %#x", cm);
558fail:
ab3c81ff 559 mutex_unlock(&instance->cm_serialize);
1b0e6146
DS		 560 return ret;
561}
562
563static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
564 u32 *data, int size)
565{
566 int ret, len;
567 u32 *buf;
568 int offb, offd;
569 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
570 int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
571
572 buf = kmalloc(buflen, GFP_KERNEL);
573 if (!buf)
574 return -ENOMEM;
575
576 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
577 if (ret < 0)
578 goto cleanup;
579
580 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
581 len = ret / 4;
582 for (offb = 0; offb < len; ) {
583 int l = le32_to_cpu(buf[offb++]);
584 if (l > stride || l > (len - offb) / 2) {
585 dbg("wrong data length %#x in response", l);
586 ret = -EIO;
587 goto cleanup;
588 }
589 while (l--) {
590 offd = le32_to_cpu(buf[offb++]);
591 if (offd >= size) {
592 dbg("wrong index %#x in response", offd);
593 ret = -EIO;
594 goto cleanup;
595 }
596 data[offd] = le32_to_cpu(buf[offb++]);
597 }
598 }
599
600 ret = 0;
601
602cleanup:
603 kfree(buf);
604 return ret;
605}
606
607static int cxacru_card_status(struct cxacru_data *instance)
608{
609 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
610 if (ret < 0) { /* firmware not loaded */
611 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
612 return ret;
613 }
614 return 0;
615}
616
da1f82b5
SA		 617static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
618 struct atm_dev *atm_dev)
619{
620 struct usb_interface *intf = usbatm_instance->usb_intf;
621
622 #define CXACRU_DEVICE_REMOVE_FILE(_name) \
623 device_remove_file(&intf->dev, &dev_attr_##_name);
624 CXACRU_ALL_FILES(REMOVE);
625 #undef CXACRU_DEVICE_REMOVE_FILE
626}
627
1b0e6146
DS		 628static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
629 struct atm_dev *atm_dev)
630{
631 struct cxacru_data *instance = usbatm_instance->driver_data;
da1f82b5 632 struct usb_interface *intf = usbatm_instance->usb_intf;
1b0e6146
DS		 633 /*
634 struct atm_dev *atm_dev = usbatm_instance->atm_dev;
635 */
636 int ret;
6a02c996 637 int start_polling = 1;
1b0e6146
DS		 638
639 dbg("cxacru_atm_start");
640
641 /* Read MAC address */
642 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
643 atm_dev->esi, sizeof(atm_dev->esi));
644 if (ret < 0) {
0ec3c7e8 645 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
1b0e6146
DS		 646 return ret;
647 }
648
da1f82b5
SA		 649 #define CXACRU_DEVICE_CREATE_FILE(_name) \
650 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
651 if (unlikely(ret)) \
652 goto fail_sysfs;
653 CXACRU_ALL_FILES(CREATE);
654 #undef CXACRU_DEVICE_CREATE_FILE
655
1b0e6146 656 /* start ADSL */
6a02c996 657 mutex_lock(&instance->adsl_state_serialize);
1b0e6146 658 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
fd209e35 659 if (ret < 0)
0ec3c7e8 660 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
1b0e6146
DS		 661
662 /* Start status polling */
6a02c996
SA		 663 mutex_lock(&instance->poll_state_serialize);
664 switch (instance->poll_state) {
665 case CXPOLL_STOPPED:
666 /* start polling */
667 instance->poll_state = CXPOLL_POLLING;
668 break;
669
670 case CXPOLL_STOPPING:
671 /* abort stop request */
672 instance->poll_state = CXPOLL_POLLING;
673 case CXPOLL_POLLING:
674 case CXPOLL_SHUTDOWN:
675 /* don't start polling */
676 start_polling = 0;
677 }
678 mutex_unlock(&instance->poll_state_serialize);
679 mutex_unlock(&instance->adsl_state_serialize);
680
681 if (start_polling)
682 cxacru_poll_status(&instance->poll_work.work);
1b0e6146 683 return 0;
da1f82b5
SA		 684
685fail_sysfs:
686 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
687 cxacru_remove_device_files(usbatm_instance, atm_dev);
688 return ret;
1b0e6146
DS		 689}
690
c4028958 691static void cxacru_poll_status(struct work_struct *work)
1b0e6146 692{
c4028958
DH		 693 struct cxacru_data *instance =
694 container_of(work, struct cxacru_data, poll_work.work);
1b0e6146 695 u32 buf[CXINF_MAX] = {};
0ec3c7e8
DS		 696 struct usbatm_data *usbatm = instance->usbatm;
697 struct atm_dev *atm_dev = usbatm->atm_dev;
6a02c996 698 int keep_polling = 1;
1b0e6146
DS		 699 int ret;
700
701 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
702 if (ret < 0) {
6a02c996
SA		 703 if (ret != -ESHUTDOWN)
704 atm_warn(usbatm, "poll status: error %d\n", ret);
705
706 mutex_lock(&instance->poll_state_serialize);
707 if (instance->poll_state != CXPOLL_SHUTDOWN) {
708 instance->poll_state = CXPOLL_STOPPED;
709
710 if (ret != -ESHUTDOWN)
711 atm_warn(usbatm, "polling disabled, set adsl_state"
712 " to 'start' or 'poll' to resume\n");
713 }
714 mutex_unlock(&instance->poll_state_serialize);
1b0e6146
DS		 715 goto reschedule;
716 }
717
fa70fe44
SA		 718 memcpy(instance->card_info, buf, sizeof(instance->card_info));
719
6a02c996
SA		 720 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
721 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
722
723 switch (instance->adsl_status) {
724 case 0:
725 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
726 break;
727
728 case 1:
729 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
730 break;
731
732 default:
733 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
734 break;
735 }
736 }
737
1b0e6146
DS		 738 if (instance->line_status == buf[CXINF_LINE_STATUS])
739 goto reschedule;
740
741 instance->line_status = buf[CXINF_LINE_STATUS];
742 switch (instance->line_status) {
743 case 0:
744 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 745 atm_info(usbatm, "ADSL line: down\n");
1b0e6146
DS		 746 break;
747
748 case 1:
749 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 750 atm_info(usbatm, "ADSL line: attempting to activate\n");
1b0e6146
DS		 751 break;
752
753 case 2:
754 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 755 atm_info(usbatm, "ADSL line: training\n");
1b0e6146
DS		 756 break;
757
758 case 3:
759 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 760 atm_info(usbatm, "ADSL line: channel analysis\n");
1b0e6146
DS		 761 break;
762
763 case 4:
764 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 765 atm_info(usbatm, "ADSL line: exchange\n");
1b0e6146
DS		 766 break;
767
768 case 5:
769 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
770 atm_dev->signal = ATM_PHY_SIG_FOUND;
771
0ec3c7e8 772 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
1b0e6146
DS		 773 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
774 break;
775
776 case 6:
777 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 778 atm_info(usbatm, "ADSL line: waiting\n");
1b0e6146
DS		 779 break;
780
781 case 7:
782 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 783 atm_info(usbatm, "ADSL line: initializing\n");
1b0e6146
DS		 784 break;
785
786 default:
787 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
0ec3c7e8 788 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
1b0e6146
DS		 789 break;
790 }
791reschedule:
6a02c996
SA		 792
793 mutex_lock(&instance->poll_state_serialize);
794 if (instance->poll_state == CXPOLL_STOPPING &&
795 instance->adsl_status == 1 && /* stopped */
796 instance->line_status == 0) /* down */
797 instance->poll_state = CXPOLL_STOPPED;
798
799 if (instance->poll_state == CXPOLL_STOPPED)
800 keep_polling = 0;
801 mutex_unlock(&instance->poll_state_serialize);
802
803 if (keep_polling)
804 schedule_delayed_work(&instance->poll_work,
805 round_jiffies_relative(POLL_INTERVAL*HZ));
1b0e6146
DS		 806}
807
808static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
809 u8 code1, u8 code2, u32 addr, u8 *data, int size)
810{
811 int ret;
812 u8 *buf;
813 int offd, offb;
814 const int stride = CMD_PACKET_SIZE - 8;
815
816 buf = (u8 *) __get_free_page(GFP_KERNEL);
817 if (!buf)
818 return -ENOMEM;
819
820 offb = offd = 0;
821 do {
822 int l = min_t(int, stride, size - offd);
823 buf[offb++] = fw;
824 buf[offb++] = l;
825 buf[offb++] = code1;
826 buf[offb++] = code2;
827 *((u32 *) (buf + offb)) = cpu_to_le32(addr);
828 offb += 4;
829 addr += l;
830 if(l)
831 memcpy(buf + offb, data + offd, l);
832 if (l < stride)
833 memset(buf + offb + l, 0, stride - l);
834 offb += stride;
835 offd += stride;
836 if ((offb >= PAGE_SIZE) || (offd >= size)) {
837 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
838 buf, offb, NULL, CMD_TIMEOUT);
839 if (ret < 0) {
840 dbg("sending fw %#x failed", fw);
841 goto cleanup;
842 }
843 offb = 0;
844 }
845 } while(offd < size);
846 dbg("sent fw %#x", fw);
847
848 ret = 0;
849
850cleanup:
851 free_page((unsigned long) buf);
852 return ret;
853}
854
855static void cxacru_upload_firmware(struct cxacru_data *instance,
856 const struct firmware *fw,
857 const struct firmware *bp,
858 const struct firmware *cf)
859{
860 int ret;
861 int off;
0ec3c7e8
DS		 862 struct usbatm_data *usbatm = instance->usbatm;
863 struct usb_device *usb_dev = usbatm->usb_dev;
1b0e6146
DS		 864 u16 signature[] = { usb_dev->descriptor.idVendor, usb_dev->descriptor.idProduct };
865 u32 val;
866
867 dbg("cxacru_upload_firmware");
868
869 /* FirmwarePllFClkValue */
870 val = cpu_to_le32(instance->modem_type->pll_f_clk);
871 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
872 if (ret) {
0ec3c7e8 873 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
1b0e6146
DS		 874 return;
875 }
876
877 /* FirmwarePllBClkValue */
878 val = cpu_to_le32(instance->modem_type->pll_b_clk);
879 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
880 if (ret) {
0ec3c7e8 881 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
1b0e6146
DS		 882 return;
883 }
884
885 /* Enable SDRAM */
886 val = cpu_to_le32(SDRAM_ENA);
887 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
888 if (ret) {
0ec3c7e8 889 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
1b0e6146
DS		 890 return;
891 }
892
893 /* Firmware */
894 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
895 if (ret) {
0ec3c7e8 896 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
1b0e6146
DS		 897 return;
898 }
899
900 /* Boot ROM patch */
901 if (instance->modem_type->boot_rom_patch) {
902 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
903 if (ret) {
0ec3c7e8 904 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
1b0e6146
DS		 905 return;
906 }
907 }
908
909 /* Signature */
910 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
911 if (ret) {
0ec3c7e8 912 usb_err(usbatm, "Signature storing failed: %d\n", ret);
1b0e6146
DS		 913 return;
914 }
915
916 if (instance->modem_type->boot_rom_patch) {
917 val = cpu_to_le32(BR_ADDR);
918 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
919 }
920 else {
921 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
922 }
923 if (ret) {
0ec3c7e8 924 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
1b0e6146
DS		 925 return;
926 }
927
928 /* Delay to allow firmware to start up. */
929 msleep_interruptible(1000);
930
931 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
932 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
933 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
934 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
935
936 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
937 if (ret < 0) {
0ec3c7e8 938 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
1b0e6146
DS		 939 return;
940 }
941
942 /* Load config data (le32), doing one packet at a time */
943 if (cf)
944 for (off = 0; off < cf->size / 4; ) {
945 u32 buf[CMD_PACKET_SIZE / 4 - 1];
946 int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
947 buf[0] = cpu_to_le32(len);
948 for (i = 0; i < len; i++, off++) {
949 buf[i * 2 + 1] = cpu_to_le32(off);
950 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
951 }
952 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
953 (u8 *) buf, len, NULL, 0);
954 if (ret < 0) {
0ec3c7e8 955 usb_err(usbatm, "load config data failed: %d\n", ret);
1b0e6146
DS		 956 return;
957 }
958 }
959
960 msleep_interruptible(4000);
961}
962
963static int cxacru_find_firmware(struct cxacru_data *instance,
964 char* phase, const struct firmware **fw_p)
965{
0ec3c7e8
DS		 966 struct usbatm_data *usbatm = instance->usbatm;
967 struct device *dev = &usbatm->usb_intf->dev;
1b0e6146
DS		 968 char buf[16];
969
970 sprintf(buf, "cxacru-%s.bin", phase);
971 dbg("cxacru_find_firmware: looking for %s", buf);
972
973 if (request_firmware(fw_p, buf, dev)) {
0ec3c7e8 974 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
1b0e6146
DS		 975 return -ENOENT;
976 }
977
0ec3c7e8 978 usb_info(usbatm, "found firmware %s\n", buf);
1b0e6146
DS		 979
980 return 0;
981}
982
983static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
984 struct usb_interface *usb_intf)
985{
1b0e6146
DS		 986 const struct firmware *fw, *bp, *cf;
987 struct cxacru_data *instance = usbatm_instance->driver_data;
988
989 int ret = cxacru_find_firmware(instance, "fw", &fw);
990 if (ret) {
0ec3c7e8 991 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 992 return ret;
993 }
994
995 if (instance->modem_type->boot_rom_patch) {
996 ret = cxacru_find_firmware(instance, "bp", &bp);
997 if (ret) {
0ec3c7e8 998 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 999 release_firmware(fw);
1000 return ret;
1001 }
1002 }
1003
1004 if (cxacru_find_firmware(instance, "cf", &cf)) /* optional */
1005 cf = NULL;
1006
1007 cxacru_upload_firmware(instance, fw, bp, cf);
1008
1009 if (cf)
1010 release_firmware(cf);
1011 if (instance->modem_type->boot_rom_patch)
1012 release_firmware(bp);
1013 release_firmware(fw);
1014
1015 ret = cxacru_card_status(instance);
1016 if (ret)
1017 dbg("modem initialisation failed");
1018 else
1019 dbg("done setting up the modem");
1020
1021 return ret;
1022}
1023
1024static int cxacru_bind(struct usbatm_data *usbatm_instance,
35644b0c 1025 struct usb_interface *intf, const struct usb_device_id *id)
1b0e6146
DS		 1026{
1027 struct cxacru_data *instance;
1028 struct usb_device *usb_dev = interface_to_usbdev(intf);
1029 int ret;
1030
1031 /* instance init */
9a734efe 1032 instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1b0e6146
DS		 1033 if (!instance) {
1034 dbg("cxacru_bind: no memory for instance data");
1035 return -ENOMEM;
1036 }
1037
1b0e6146
DS		 1038 instance->usbatm = usbatm_instance;
1039 instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
fa70fe44 1040 memset(instance->card_info, 0, sizeof(instance->card_info));
1b0e6146 1041
6a02c996
SA		 1042 mutex_init(&instance->poll_state_serialize);
1043 instance->poll_state = CXPOLL_STOPPED;
1044 instance->line_status = -1;
1045 instance->adsl_status = -1;
1046
1047 mutex_init(&instance->adsl_state_serialize);
1048
1b0e6146
DS		 1049 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1050 if (!instance->rcv_buf) {
1051 dbg("cxacru_bind: no memory for rcv_buf");
1052 ret = -ENOMEM;
1053 goto fail;
1054 }
1055 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1056 if (!instance->snd_buf) {
1057 dbg("cxacru_bind: no memory for snd_buf");
1058 ret = -ENOMEM;
1059 goto fail;
1060 }
1061 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1062 if (!instance->rcv_urb) {
1063 dbg("cxacru_bind: no memory for rcv_urb");
1064 ret = -ENOMEM;
1065 goto fail;
1066 }
1067 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1068 if (!instance->snd_urb) {
1069 dbg("cxacru_bind: no memory for snd_urb");
1070 ret = -ENOMEM;
1071 goto fail;
1072 }
1073
1074 usb_fill_int_urb(instance->rcv_urb,
1075 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1076 instance->rcv_buf, PAGE_SIZE,
1077 cxacru_blocking_completion, &instance->rcv_done, 1);
1b0e6146
DS		 1078
1079 usb_fill_int_urb(instance->snd_urb,
1080 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1081 instance->snd_buf, PAGE_SIZE,
1082 cxacru_blocking_completion, &instance->snd_done, 4);
1b0e6146 1083
ab3c81ff 1084 mutex_init(&instance->cm_serialize);
1b0e6146 1085
c4028958 1086 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1b0e6146
DS		 1087
1088 usbatm_instance->driver_data = instance;
1089
35644b0c 1090 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1b0e6146
DS		 1091
1092 return 0;
1093
1094 fail:
1095 free_page((unsigned long) instance->snd_buf);
1096 free_page((unsigned long) instance->rcv_buf);
1097 usb_free_urb(instance->snd_urb);
1098 usb_free_urb(instance->rcv_urb);
1099 kfree(instance);
1100
1101 return ret;
1102}
1103
1104static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1105 struct usb_interface *intf)
1106{
1107 struct cxacru_data *instance = usbatm_instance->driver_data;
6a02c996 1108 int is_polling = 1;
1b0e6146
DS		 1109
1110 dbg("cxacru_unbind entered");
1111
1112 if (!instance) {
1113 dbg("cxacru_unbind: NULL instance!");
1114 return;
1115 }
1116
6a02c996
SA		 1117 mutex_lock(&instance->poll_state_serialize);
1118 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1119
1120 /* ensure that status polling continues unless
1121 * it has already stopped */
1122 if (instance->poll_state == CXPOLL_STOPPED)
1123 is_polling = 0;
1124
1125 /* stop polling from being stopped or started */
1126 instance->poll_state = CXPOLL_SHUTDOWN;
1127 mutex_unlock(&instance->poll_state_serialize);
1128
1129 if (is_polling)
1130 cancel_rearming_delayed_work(&instance->poll_work);
1b0e6146
DS		 1131
1132 usb_kill_urb(instance->snd_urb);
1133 usb_kill_urb(instance->rcv_urb);
1134 usb_free_urb(instance->snd_urb);
1135 usb_free_urb(instance->rcv_urb);
1136
1137 free_page((unsigned long) instance->snd_buf);
1138 free_page((unsigned long) instance->rcv_buf);
fa70fe44 1139
1b0e6146
DS		 1140 kfree(instance);
1141
1142 usbatm_instance->driver_data = NULL;
1143}
1144
1145static const struct cxacru_modem_type cxacru_cafe = {
1146 .pll_f_clk = 0x02d874df,
1147 .pll_b_clk = 0x0196a51a,
1148 .boot_rom_patch = 1,
1149};
1150
1151static const struct cxacru_modem_type cxacru_cb00 = {
1152 .pll_f_clk = 0x5,
1153 .pll_b_clk = 0x3,
1154 .boot_rom_patch = 0,
1155};
1156
1157static const struct usb_device_id cxacru_usb_ids[] = {
1158 { /* V = Conexant P = ADSL modem (Euphrates project) */
1159 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
1160 },
1161 { /* V = Conexant P = ADSL modem (Hasbani project) */
1162 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
1163 },
1164 { /* V = Conexant P = ADSL modem */
1165 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1166 },
0ec3c7e8
DS		 1167 { /* V = Conexant P = ADSL modem (Well PTI-800) */
1168 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
1169 },
1b0e6146
DS		 1170 { /* V = Conexant P = ADSL modem */
1171 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
1172 },
44960af1
DS		 1173 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */
1174 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00
1175 },
1b0e6146
DS		 1176 { /* V = Olitec P = ADSL modem version 2 */
1177 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
1178 },
1179 { /* V = Olitec P = ADSL modem version 3 */
1180 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
1181 },
1182 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
1183 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
1184 },
1185 { /* V = Zoom P = 5510 */
1186 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
1187 },
1188 { /* V = Draytek P = Vigor 318 */
1189 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
1190 },
1191 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
1192 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
1193 },
1194 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
1195 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
1196 },
1197 { /* V = Aethra P = Starmodem UM1020 */
1198 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
1199 },
1200 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
1201 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
1202 },
1203 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
1204 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1205 },
1206 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
1207 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
1208 },
1209 {}
1210};
1211
1212MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1213
1214static struct usbatm_driver cxacru_driver = {
1b0e6146
DS		 1215 .driver_name = cxacru_driver_name,
1216 .bind = cxacru_bind,
1217 .heavy_init = cxacru_heavy_init,
1218 .unbind = cxacru_unbind,
1219 .atm_start = cxacru_atm_start,
da1f82b5 1220 .atm_stop = cxacru_remove_device_files,
80aae7a1
DS		 1221 .bulk_in = CXACRU_EP_DATA,
1222 .bulk_out = CXACRU_EP_DATA,
1b0e6146
DS		 1223 .rx_padding = 3,
1224 .tx_padding = 11,
1225};
1226
1227static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1228{
1229 return usbatm_usb_probe(intf, id, &cxacru_driver);
1230}
1231
1232static struct usb_driver cxacru_usb_driver = {
1b0e6146
DS		 1233 .name = cxacru_driver_name,
1234 .probe = cxacru_usb_probe,
1235 .disconnect = usbatm_usb_disconnect,
1236 .id_table = cxacru_usb_ids
1237};
1238
1239static int __init cxacru_init(void)
1240{
1241 return usb_register(&cxacru_usb_driver);
1242}
1243
1244static void __exit cxacru_cleanup(void)
1245{
1246 usb_deregister(&cxacru_usb_driver);
1247}
1248
1249module_init(cxacru_init);
1250module_exit(cxacru_cleanup);
1251
1252MODULE_AUTHOR(DRIVER_AUTHOR);
1253MODULE_DESCRIPTION(DRIVER_DESC);
1254MODULE_LICENSE("GPL");
1255MODULE_VERSION(DRIVER_VERSION);
Linux 6.x block layer and io_uring tree(s)