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Merge branches 'topic/slob/cleanups', 'topic/slob/fixes', 'topic/slub/core', 'topic...
[linux-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>
fd05e720 41#include <asm/unaligned.h>
1b0e6146
DS		 42
43#include "usbatm.h"
44
fa70fe44
SA		 45#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
46#define DRIVER_VERSION "0.3"
1b0e6146
DS		 47#define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
48
49static const char cxacru_driver_name[] = "cxacru";
50
51#define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
52#define CXACRU_EP_DATA 0x02 /* Bulk in/out */
53
54#define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
55
56/* Addresses */
57#define PLLFCLK_ADDR 0x00350068
58#define PLLBCLK_ADDR 0x0035006c
59#define SDRAMEN_ADDR 0x00350010
60#define FW_ADDR 0x00801000
61#define BR_ADDR 0x00180600
62#define SIG_ADDR 0x00180500
63#define BR_STACK_ADDR 0x00187f10
64
65/* Values */
66#define SDRAM_ENA 0x1
67
68#define CMD_TIMEOUT 2000 /* msecs */
fa70fe44 69#define POLL_INTERVAL 1 /* secs */
1b0e6146
DS		 70
71/* commands for interaction with the modem through the control channel before
72 * firmware is loaded */
73enum cxacru_fw_request {
74 FW_CMD_ERR,
75 FW_GET_VER,
76 FW_READ_MEM,
77 FW_WRITE_MEM,
78 FW_RMW_MEM,
79 FW_CHECKSUM_MEM,
80 FW_GOTO_MEM,
81};
82
83/* commands for interaction with the modem through the control channel once
84 * firmware is loaded */
85enum cxacru_cm_request {
86 CM_REQUEST_UNDEFINED = 0x80,
87 CM_REQUEST_TEST,
88 CM_REQUEST_CHIP_GET_MAC_ADDRESS,
89 CM_REQUEST_CHIP_GET_DP_VERSIONS,
90 CM_REQUEST_CHIP_ADSL_LINE_START,
91 CM_REQUEST_CHIP_ADSL_LINE_STOP,
92 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
93 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
94 CM_REQUEST_CARD_INFO_GET,
95 CM_REQUEST_CARD_DATA_GET,
96 CM_REQUEST_CARD_DATA_SET,
97 CM_REQUEST_COMMAND_HW_IO,
98 CM_REQUEST_INTERFACE_HW_IO,
99 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
100 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
101 CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
102 CM_REQUEST_CARD_GET_STATUS,
103 CM_REQUEST_CARD_GET_MAC_ADDRESS,
104 CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
105 CM_REQUEST_MAX,
106};
107
108/* reply codes to the commands above */
109enum cxacru_cm_status {
110 CM_STATUS_UNDEFINED,
111 CM_STATUS_SUCCESS,
112 CM_STATUS_ERROR,
113 CM_STATUS_UNSUPPORTED,
114 CM_STATUS_UNIMPLEMENTED,
115 CM_STATUS_PARAMETER_ERROR,
116 CM_STATUS_DBG_LOOPBACK,
117 CM_STATUS_MAX,
118};
119
120/* indices into CARD_INFO_GET return array */
121enum cxacru_info_idx {
122 CXINF_DOWNSTREAM_RATE,
123 CXINF_UPSTREAM_RATE,
124 CXINF_LINK_STATUS,
125 CXINF_LINE_STATUS,
126 CXINF_MAC_ADDRESS_HIGH,
127 CXINF_MAC_ADDRESS_LOW,
128 CXINF_UPSTREAM_SNR_MARGIN,
129 CXINF_DOWNSTREAM_SNR_MARGIN,
130 CXINF_UPSTREAM_ATTENUATION,
131 CXINF_DOWNSTREAM_ATTENUATION,
132 CXINF_TRANSMITTER_POWER,
133 CXINF_UPSTREAM_BITS_PER_FRAME,
134 CXINF_DOWNSTREAM_BITS_PER_FRAME,
135 CXINF_STARTUP_ATTEMPTS,
136 CXINF_UPSTREAM_CRC_ERRORS,
137 CXINF_DOWNSTREAM_CRC_ERRORS,
138 CXINF_UPSTREAM_FEC_ERRORS,
139 CXINF_DOWNSTREAM_FEC_ERRORS,
140 CXINF_UPSTREAM_HEC_ERRORS,
141 CXINF_DOWNSTREAM_HEC_ERRORS,
142 CXINF_LINE_STARTABLE,
143 CXINF_MODULATION,
144 CXINF_ADSL_HEADEND,
145 CXINF_ADSL_HEADEND_ENVIRONMENT,
146 CXINF_CONTROLLER_VERSION,
147 /* dunno what the missing two mean */
148 CXINF_MAX = 0x1c,
149};
150
6a02c996
SA		 151enum cxacru_poll_state {
152 CXPOLL_STOPPING,
153 CXPOLL_STOPPED,
154 CXPOLL_POLLING,
155 CXPOLL_SHUTDOWN
156};
157
1b0e6146
DS		 158struct cxacru_modem_type {
159 u32 pll_f_clk;
160 u32 pll_b_clk;
161 int boot_rom_patch;
162};
163
164struct cxacru_data {
165 struct usbatm_data *usbatm;
166
167 const struct cxacru_modem_type *modem_type;
168
169 int line_status;
6a02c996
SA		 170 struct mutex adsl_state_serialize;
171 int adsl_status;
c4028958 172 struct delayed_work poll_work;
fa70fe44 173 u32 card_info[CXINF_MAX];
6a02c996 174 struct mutex poll_state_serialize;
87e71b47 175 enum cxacru_poll_state poll_state;
1b0e6146
DS		 176
177 /* contol handles */
ab3c81ff 178 struct mutex cm_serialize;
1b0e6146
DS		 179 u8 *rcv_buf;
180 u8 *snd_buf;
181 struct urb *rcv_urb;
182 struct urb *snd_urb;
183 struct completion rcv_done;
184 struct completion snd_done;
185};
186
6a02c996
SA		 187static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
188 u8 *wdata, int wsize, u8 *rdata, int rsize);
189static void cxacru_poll_status(struct work_struct *work);
190
fa70fe44
SA		 191/* Card info exported through sysfs */
192#define CXACRU__ATTR_INIT(_name) \
193static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
194
6a02c996
SA		 195#define CXACRU_CMD_INIT(_name) \
196static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
197 cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
198
fa70fe44
SA		 199#define CXACRU_ATTR_INIT(_value, _type, _name) \
200static ssize_t cxacru_sysfs_show_##_name(struct device *dev, \
201 struct device_attribute *attr, char *buf) \
202{ \
203 struct usb_interface *intf = to_usb_interface(dev); \
204 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf); \
205 struct cxacru_data *instance = usbatm_instance->driver_data; \
206 return cxacru_sysfs_showattr_##_type(instance->card_info[_value], buf); \
207} \
208CXACRU__ATTR_INIT(_name)
209
210#define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
6a02c996 211#define CXACRU_CMD_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
fa70fe44
SA		 212#define CXACRU__ATTR_CREATE(_name) CXACRU_DEVICE_CREATE_FILE(_name)
213
214#define CXACRU_ATTR_REMOVE(_v, _t, _name) CXACRU_DEVICE_REMOVE_FILE(_name)
6a02c996 215#define CXACRU_CMD_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
fa70fe44
SA		 216#define CXACRU__ATTR_REMOVE(_name) CXACRU_DEVICE_REMOVE_FILE(_name)
217
218static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
219{
220 return snprintf(buf, PAGE_SIZE, "%u\n", value);
221}
222
223static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
224{
225 return snprintf(buf, PAGE_SIZE, "%d\n", value);
226}
227
228static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
229{
87e71b47
SA		 230 return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
231 value / 100, abs(value) % 100);
fa70fe44
SA		 232}
233
234static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
235{
87e71b47
SA		 236 static char *str[] = { "no", "yes" };
237 if (unlikely(value >= ARRAY_SIZE(str)))
238 return snprintf(buf, PAGE_SIZE, "%u\n", value);
239 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 240}
241
242static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
243{
87e71b47
SA		 244 static char *str[] = { NULL, "not connected", "connected", "lost" };
245 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
246 return snprintf(buf, PAGE_SIZE, "%u\n", value);
247 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 248}
249
250static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
251{
87e71b47
SA		 252 static char *str[] = { "down", "attempting to activate",
253 "training", "channel analysis", "exchange", "up",
254 "waiting", "initialising"
255 };
256 if (unlikely(value >= ARRAY_SIZE(str)))
257 return snprintf(buf, PAGE_SIZE, "%u\n", value);
258 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 259}
260
261static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
262{
87e71b47
SA		 263 static char *str[] = {
264 NULL,
265 "ANSI T1.413",
266 "ITU-T G.992.1 (G.DMT)",
267 "ITU-T G.992.2 (G.LITE)"
268 };
269 if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
270 return snprintf(buf, PAGE_SIZE, "%u\n", value);
271 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
fa70fe44
SA		 272}
273
274/*
275 * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
276 * this data is already in atm_dev there's no point.
277 *
278 * MAC_ADDRESS_HIGH = 0x????5544
279 * MAC_ADDRESS_LOW = 0x33221100
280 * Where 00-55 are bytes 0-5 of the MAC.
281 */
282static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
283 struct device_attribute *attr, char *buf)
284{
285 struct usb_interface *intf = to_usb_interface(dev);
286 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
287 struct atm_dev *atm_dev = usbatm_instance->atm_dev;
288
7c510e4b 289 return snprintf(buf, PAGE_SIZE, "%pM\n", atm_dev->esi);
fa70fe44
SA		 290}
291
6a02c996
SA		 292static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
293 struct device_attribute *attr, char *buf)
294{
295 struct usb_interface *intf = to_usb_interface(dev);
296 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
297 struct cxacru_data *instance = usbatm_instance->driver_data;
298 u32 value = instance->card_info[CXINF_LINE_STARTABLE];
299
87e71b47
SA		 300 static char *str[] = { "running", "stopped" };
301 if (unlikely(value >= ARRAY_SIZE(str)))
302 return snprintf(buf, PAGE_SIZE, "%u\n", value);
303 return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
6a02c996
SA		 304}
305
306static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
307 struct device_attribute *attr, const char *buf, size_t count)
308{
309 struct usb_interface *intf = to_usb_interface(dev);
310 struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
311 struct cxacru_data *instance = usbatm_instance->driver_data;
312 int ret;
313 int poll = -1;
314 char str_cmd[8];
315 int len = strlen(buf);
316
317 if (!capable(CAP_NET_ADMIN))
318 return -EACCES;
319
320 ret = sscanf(buf, "%7s", str_cmd);
321 if (ret != 1)
322 return -EINVAL;
323 ret = 0;
324
325 if (mutex_lock_interruptible(&instance->adsl_state_serialize))
326 return -ERESTARTSYS;
327
328 if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
329 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
330 if (ret < 0) {
331 atm_err(usbatm_instance, "change adsl state:"
332 " CHIP_ADSL_LINE_STOP returned %d\n", ret);
333
334 ret = -EIO;
335 } else {
336 ret = len;
337 poll = CXPOLL_STOPPED;
338 }
339 }
340
341 /* Line status is only updated every second
342 * and the device appears to only react to
343 * START/STOP every second too. Wait 1.5s to
344 * be sure that restart will have an effect. */
345 if (!strcmp(str_cmd, "restart"))
346 msleep(1500);
347
348 if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
349 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
350 if (ret < 0) {
351 atm_err(usbatm_instance, "change adsl state:"
352 " CHIP_ADSL_LINE_START returned %d\n", ret);
353
354 ret = -EIO;
355 } else {
356 ret = len;
357 poll = CXPOLL_POLLING;
358 }
359 }
360
361 if (!strcmp(str_cmd, "poll")) {
362 ret = len;
363 poll = CXPOLL_POLLING;
364 }
365
366 if (ret == 0) {
367 ret = -EINVAL;
368 poll = -1;
369 }
370
371 if (poll == CXPOLL_POLLING) {
372 mutex_lock(&instance->poll_state_serialize);
373 switch (instance->poll_state) {
374 case CXPOLL_STOPPED:
375 /* start polling */
376 instance->poll_state = CXPOLL_POLLING;
377 break;
378
379 case CXPOLL_STOPPING:
380 /* abort stop request */
381 instance->poll_state = CXPOLL_POLLING;
382 case CXPOLL_POLLING:
383 case CXPOLL_SHUTDOWN:
384 /* don't start polling */
385 poll = -1;
386 }
387 mutex_unlock(&instance->poll_state_serialize);
388 } else if (poll == CXPOLL_STOPPED) {
389 mutex_lock(&instance->poll_state_serialize);
390 /* request stop */
391 if (instance->poll_state == CXPOLL_POLLING)
392 instance->poll_state = CXPOLL_STOPPING;
393 mutex_unlock(&instance->poll_state_serialize);
394 }
395
396 mutex_unlock(&instance->adsl_state_serialize);
397
398 if (poll == CXPOLL_POLLING)
399 cxacru_poll_status(&instance->poll_work.work);
400
401 return ret;
402}
403
fa70fe44
SA		 404/*
405 * All device attributes are included in CXACRU_ALL_FILES
406 * so that the same list can be used multiple times:
407 * INIT (define the device attributes)
408 * CREATE (create all the device files)
409 * REMOVE (remove all the device files)
410 *
411 * With the last two being defined as needed in the functions
412 * they are used in before calling CXACRU_ALL_FILES()
413 */
414#define CXACRU_ALL_FILES(_action) \
415CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE, u32, downstream_rate); \
416CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE, u32, upstream_rate); \
417CXACRU_ATTR_##_action(CXINF_LINK_STATUS, LINK, link_status); \
418CXACRU_ATTR_##_action(CXINF_LINE_STATUS, LINE, line_status); \
419CXACRU__ATTR_##_action( mac_address); \
420CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN, dB, upstream_snr_margin); \
421CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN, dB, downstream_snr_margin); \
422CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION, dB, upstream_attenuation); \
423CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION, dB, downstream_attenuation); \
424CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER, s8, transmitter_power); \
425CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME, u32, upstream_bits_per_frame); \
426CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32, downstream_bits_per_frame); \
427CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS, u32, startup_attempts); \
428CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS, u32, upstream_crc_errors); \
429CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS, u32, downstream_crc_errors); \
430CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS, u32, upstream_fec_errors); \
431CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS, u32, downstream_fec_errors); \
432CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS, u32, upstream_hec_errors); \
433CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS, u32, downstream_hec_errors); \
434CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE, bool, line_startable); \
435CXACRU_ATTR_##_action(CXINF_MODULATION, MODU, modulation); \
436CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND, u32, adsl_headend); \
437CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT, u32, adsl_headend_environment); \
6a02c996
SA		 438CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION, u32, adsl_controller_version); \
439CXACRU_CMD_##_action( adsl_state);
fa70fe44
SA		 440
441CXACRU_ALL_FILES(INIT);
442
1b0e6146 443/* the following three functions are stolen from drivers/usb/core/message.c */
7d12e780 444static void cxacru_blocking_completion(struct urb *urb)
1b0e6146 445{
cdc97792 446 complete(urb->context);
1b0e6146
DS		 447}
448
449static void cxacru_timeout_kill(unsigned long data)
450{
451 usb_unlink_urb((struct urb *) data);
452}
453
454static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
455 int* actual_length)
456{
457 struct timer_list timer;
1b0e6146
DS		 458
459 init_timer(&timer);
460 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
461 timer.data = (unsigned long) urb;
462 timer.function = cxacru_timeout_kill;
463 add_timer(&timer);
464 wait_for_completion(done);
1b0e6146
DS		 465 del_timer_sync(&timer);
466
467 if (actual_length)
468 *actual_length = urb->actual_length;
3b79cc26 469 return urb->status; /* must read status after completion */
1b0e6146
DS		 470}
471
472static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
473 u8 *wdata, int wsize, u8 *rdata, int rsize)
474{
475 int ret, actlen;
476 int offb, offd;
477 const int stride = CMD_PACKET_SIZE - 4;
478 u8 *wbuf = instance->snd_buf;
479 u8 *rbuf = instance->rcv_buf;
480 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
481 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
482
483 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
4ac0718e
SA		 484 if (printk_ratelimit())
485 usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
486 wbuflen, rbuflen);
1b0e6146 487 ret = -ENOMEM;
eeafa64b 488 goto err;
1b0e6146
DS		 489 }
490
ab3c81ff 491 mutex_lock(&instance->cm_serialize);
1b0e6146
DS		 492
493 /* submit reading urb before the writing one */
494 init_completion(&instance->rcv_done);
495 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
496 if (ret < 0) {
4ac0718e
SA		 497 if (printk_ratelimit())
498 usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
499 cm, ret);
1b0e6146
DS		 500 goto fail;
501 }
502
503 memset(wbuf, 0, wbuflen);
504 /* handle wsize == 0 */
505 wbuf[0] = cm;
506 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
507 wbuf[offb] = cm;
508 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
509 }
510
511 instance->snd_urb->transfer_buffer_length = wbuflen;
512 init_completion(&instance->snd_done);
513 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
514 if (ret < 0) {
4ac0718e
SA		 515 if (printk_ratelimit())
516 usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
517 cm, ret);
1b0e6146
DS		 518 goto fail;
519 }
520
521 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
522 if (ret < 0) {
4ac0718e
SA		 523 if (printk_ratelimit())
524 usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
1b0e6146
DS		 525 goto fail;
526 }
527
528 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
529 if (ret < 0) {
4ac0718e
SA		 530 if (printk_ratelimit())
531 usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
1b0e6146
DS		 532 goto fail;
533 }
534 if (actlen % CMD_PACKET_SIZE || !actlen) {
4ac0718e
SA		 535 if (printk_ratelimit())
536 usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
537 cm, actlen);
1b0e6146
DS		 538 ret = -EIO;
539 goto fail;
540 }
541
542 /* check the return status and copy the data to the output buffer, if needed */
543 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
544 if (rbuf[offb] != cm) {
4ac0718e
SA		 545 if (printk_ratelimit())
546 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
547 rbuf[offb], cm);
1b0e6146
DS		 548 ret = -EIO;
549 goto fail;
550 }
551 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
4ac0718e
SA		 552 if (printk_ratelimit())
553 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
554 cm, rbuf[offb + 1]);
1b0e6146
DS		 555 ret = -EIO;
556 goto fail;
557 }
558 if (offd >= rsize)
559 break;
560 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
561 offd += stride;
562 }
563
564 ret = offd;
565 dbg("cm %#x", cm);
566fail:
ab3c81ff 567 mutex_unlock(&instance->cm_serialize);
eeafa64b 568err:
1b0e6146
DS		 569 return ret;
570}
571
572static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
573 u32 *data, int size)
574{
575 int ret, len;
fd05e720 576 __le32 *buf;
1b0e6146
DS		 577 int offb, offd;
578 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
579 int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
580
581 buf = kmalloc(buflen, GFP_KERNEL);
582 if (!buf)
583 return -ENOMEM;
584
585 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
586 if (ret < 0)
587 goto cleanup;
588
589 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
590 len = ret / 4;
591 for (offb = 0; offb < len; ) {
592 int l = le32_to_cpu(buf[offb++]);
593 if (l > stride || l > (len - offb) / 2) {
4ac0718e
SA		 594 if (printk_ratelimit())
595 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
596 cm, l);
1b0e6146
DS		 597 ret = -EIO;
598 goto cleanup;
599 }
600 while (l--) {
601 offd = le32_to_cpu(buf[offb++]);
602 if (offd >= size) {
4ac0718e 603 if (printk_ratelimit())
230ffc75 604 usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
4ac0718e 605 offd, cm);
1b0e6146
DS		 606 ret = -EIO;
607 goto cleanup;
608 }
609 data[offd] = le32_to_cpu(buf[offb++]);
610 }
611 }
612
613 ret = 0;
614
615cleanup:
616 kfree(buf);
617 return ret;
618}
619
620static int cxacru_card_status(struct cxacru_data *instance)
621{
622 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
623 if (ret < 0) { /* firmware not loaded */
624 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
625 return ret;
626 }
627 return 0;
628}
629
da1f82b5
SA		 630static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
631 struct atm_dev *atm_dev)
632{
633 struct usb_interface *intf = usbatm_instance->usb_intf;
634
635 #define CXACRU_DEVICE_REMOVE_FILE(_name) \
636 device_remove_file(&intf->dev, &dev_attr_##_name);
637 CXACRU_ALL_FILES(REMOVE);
638 #undef CXACRU_DEVICE_REMOVE_FILE
639}
640
1b0e6146
DS		 641static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
642 struct atm_dev *atm_dev)
643{
644 struct cxacru_data *instance = usbatm_instance->driver_data;
da1f82b5 645 struct usb_interface *intf = usbatm_instance->usb_intf;
1b0e6146
DS		 646 /*
647 struct atm_dev *atm_dev = usbatm_instance->atm_dev;
648 */
649 int ret;
6a02c996 650 int start_polling = 1;
1b0e6146
DS		 651
652 dbg("cxacru_atm_start");
653
654 /* Read MAC address */
655 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
656 atm_dev->esi, sizeof(atm_dev->esi));
657 if (ret < 0) {
0ec3c7e8 658 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
1b0e6146
DS		 659 return ret;
660 }
661
da1f82b5
SA		 662 #define CXACRU_DEVICE_CREATE_FILE(_name) \
663 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
664 if (unlikely(ret)) \
665 goto fail_sysfs;
666 CXACRU_ALL_FILES(CREATE);
667 #undef CXACRU_DEVICE_CREATE_FILE
668
1b0e6146 669 /* start ADSL */
6a02c996 670 mutex_lock(&instance->adsl_state_serialize);
1b0e6146 671 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
fd209e35 672 if (ret < 0)
0ec3c7e8 673 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
1b0e6146
DS		 674
675 /* Start status polling */
6a02c996
SA		 676 mutex_lock(&instance->poll_state_serialize);
677 switch (instance->poll_state) {
678 case CXPOLL_STOPPED:
679 /* start polling */
680 instance->poll_state = CXPOLL_POLLING;
681 break;
682
683 case CXPOLL_STOPPING:
684 /* abort stop request */
685 instance->poll_state = CXPOLL_POLLING;
686 case CXPOLL_POLLING:
687 case CXPOLL_SHUTDOWN:
688 /* don't start polling */
689 start_polling = 0;
690 }
691 mutex_unlock(&instance->poll_state_serialize);
692 mutex_unlock(&instance->adsl_state_serialize);
693
694 if (start_polling)
695 cxacru_poll_status(&instance->poll_work.work);
1b0e6146 696 return 0;
da1f82b5
SA		 697
698fail_sysfs:
699 usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
700 cxacru_remove_device_files(usbatm_instance, atm_dev);
701 return ret;
1b0e6146
DS		 702}
703
c4028958 704static void cxacru_poll_status(struct work_struct *work)
1b0e6146 705{
c4028958
DH		 706 struct cxacru_data *instance =
707 container_of(work, struct cxacru_data, poll_work.work);
1b0e6146 708 u32 buf[CXINF_MAX] = {};
0ec3c7e8
DS		 709 struct usbatm_data *usbatm = instance->usbatm;
710 struct atm_dev *atm_dev = usbatm->atm_dev;
6a02c996 711 int keep_polling = 1;
1b0e6146
DS		 712 int ret;
713
714 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
715 if (ret < 0) {
6a02c996
SA		 716 if (ret != -ESHUTDOWN)
717 atm_warn(usbatm, "poll status: error %d\n", ret);
718
719 mutex_lock(&instance->poll_state_serialize);
720 if (instance->poll_state != CXPOLL_SHUTDOWN) {
721 instance->poll_state = CXPOLL_STOPPED;
722
723 if (ret != -ESHUTDOWN)
724 atm_warn(usbatm, "polling disabled, set adsl_state"
725 " to 'start' or 'poll' to resume\n");
726 }
727 mutex_unlock(&instance->poll_state_serialize);
1b0e6146
DS		 728 goto reschedule;
729 }
730
fa70fe44
SA		 731 memcpy(instance->card_info, buf, sizeof(instance->card_info));
732
6a02c996
SA		 733 if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
734 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
735
736 switch (instance->adsl_status) {
737 case 0:
738 atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
739 break;
740
741 case 1:
742 atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
743 break;
744
745 default:
746 atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
747 break;
748 }
749 }
750
1b0e6146
DS		 751 if (instance->line_status == buf[CXINF_LINE_STATUS])
752 goto reschedule;
753
754 instance->line_status = buf[CXINF_LINE_STATUS];
755 switch (instance->line_status) {
756 case 0:
757 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 758 atm_info(usbatm, "ADSL line: down\n");
1b0e6146
DS		 759 break;
760
761 case 1:
762 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 763 atm_info(usbatm, "ADSL line: attempting to activate\n");
1b0e6146
DS		 764 break;
765
766 case 2:
767 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 768 atm_info(usbatm, "ADSL line: training\n");
1b0e6146
DS		 769 break;
770
771 case 3:
772 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 773 atm_info(usbatm, "ADSL line: channel analysis\n");
1b0e6146
DS		 774 break;
775
776 case 4:
777 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 778 atm_info(usbatm, "ADSL line: exchange\n");
1b0e6146
DS		 779 break;
780
781 case 5:
782 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
783 atm_dev->signal = ATM_PHY_SIG_FOUND;
784
0ec3c7e8 785 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
1b0e6146
DS		 786 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
787 break;
788
789 case 6:
790 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 791 atm_info(usbatm, "ADSL line: waiting\n");
1b0e6146
DS		 792 break;
793
794 case 7:
795 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 796 atm_info(usbatm, "ADSL line: initializing\n");
1b0e6146
DS		 797 break;
798
799 default:
800 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
0ec3c7e8 801 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
1b0e6146
DS		 802 break;
803 }
804reschedule:
6a02c996
SA		 805
806 mutex_lock(&instance->poll_state_serialize);
807 if (instance->poll_state == CXPOLL_STOPPING &&
808 instance->adsl_status == 1 && /* stopped */
809 instance->line_status == 0) /* down */
810 instance->poll_state = CXPOLL_STOPPED;
811
812 if (instance->poll_state == CXPOLL_STOPPED)
813 keep_polling = 0;
814 mutex_unlock(&instance->poll_state_serialize);
815
816 if (keep_polling)
817 schedule_delayed_work(&instance->poll_work,
818 round_jiffies_relative(POLL_INTERVAL*HZ));
1b0e6146
DS		 819}
820
821static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
3b216d18 822 u8 code1, u8 code2, u32 addr, const u8 *data, int size)
1b0e6146
DS		 823{
824 int ret;
825 u8 *buf;
826 int offd, offb;
827 const int stride = CMD_PACKET_SIZE - 8;
828
829 buf = (u8 *) __get_free_page(GFP_KERNEL);
830 if (!buf)
831 return -ENOMEM;
832
833 offb = offd = 0;
834 do {
835 int l = min_t(int, stride, size - offd);
836 buf[offb++] = fw;
837 buf[offb++] = l;
838 buf[offb++] = code1;
839 buf[offb++] = code2;
fd05e720 840 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb));
1b0e6146
DS		 841 offb += 4;
842 addr += l;
843 if(l)
844 memcpy(buf + offb, data + offd, l);
845 if (l < stride)
846 memset(buf + offb + l, 0, stride - l);
847 offb += stride;
848 offd += stride;
849 if ((offb >= PAGE_SIZE) || (offd >= size)) {
850 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
851 buf, offb, NULL, CMD_TIMEOUT);
852 if (ret < 0) {
853 dbg("sending fw %#x failed", fw);
854 goto cleanup;
855 }
856 offb = 0;
857 }
858 } while(offd < size);
859 dbg("sent fw %#x", fw);
860
861 ret = 0;
862
863cleanup:
864 free_page((unsigned long) buf);
865 return ret;
866}
867
868static void cxacru_upload_firmware(struct cxacru_data *instance,
869 const struct firmware *fw,
870 const struct firmware *bp,
871 const struct firmware *cf)
872{
873 int ret;
874 int off;
0ec3c7e8
DS		 875 struct usbatm_data *usbatm = instance->usbatm;
876 struct usb_device *usb_dev = usbatm->usb_dev;
fd05e720
AV		 877 __le16 signature[] = { usb_dev->descriptor.idVendor,
878 usb_dev->descriptor.idProduct };
879 __le32 val;
1b0e6146
DS		 880
881 dbg("cxacru_upload_firmware");
882
883 /* FirmwarePllFClkValue */
884 val = cpu_to_le32(instance->modem_type->pll_f_clk);
885 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
886 if (ret) {
0ec3c7e8 887 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
1b0e6146
DS		 888 return;
889 }
890
891 /* FirmwarePllBClkValue */
892 val = cpu_to_le32(instance->modem_type->pll_b_clk);
893 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
894 if (ret) {
0ec3c7e8 895 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
1b0e6146
DS		 896 return;
897 }
898
899 /* Enable SDRAM */
900 val = cpu_to_le32(SDRAM_ENA);
901 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
902 if (ret) {
0ec3c7e8 903 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
1b0e6146
DS		 904 return;
905 }
906
907 /* Firmware */
908 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
909 if (ret) {
0ec3c7e8 910 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
1b0e6146
DS		 911 return;
912 }
913
914 /* Boot ROM patch */
915 if (instance->modem_type->boot_rom_patch) {
916 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
917 if (ret) {
0ec3c7e8 918 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
1b0e6146
DS		 919 return;
920 }
921 }
922
923 /* Signature */
924 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
925 if (ret) {
0ec3c7e8 926 usb_err(usbatm, "Signature storing failed: %d\n", ret);
1b0e6146
DS		 927 return;
928 }
929
930 if (instance->modem_type->boot_rom_patch) {
931 val = cpu_to_le32(BR_ADDR);
932 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
933 }
934 else {
935 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
936 }
937 if (ret) {
0ec3c7e8 938 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
1b0e6146
DS		 939 return;
940 }
941
942 /* Delay to allow firmware to start up. */
943 msleep_interruptible(1000);
944
945 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
946 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
947 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
948 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
949
950 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
951 if (ret < 0) {
0ec3c7e8 952 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
1b0e6146
DS		 953 return;
954 }
955
956 /* Load config data (le32), doing one packet at a time */
957 if (cf)
958 for (off = 0; off < cf->size / 4; ) {
fd05e720 959 __le32 buf[CMD_PACKET_SIZE / 4 - 1];
1b0e6146
DS		 960 int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
961 buf[0] = cpu_to_le32(len);
962 for (i = 0; i < len; i++, off++) {
963 buf[i * 2 + 1] = cpu_to_le32(off);
964 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
965 }
966 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
967 (u8 *) buf, len, NULL, 0);
968 if (ret < 0) {
0ec3c7e8 969 usb_err(usbatm, "load config data failed: %d\n", ret);
1b0e6146
DS		 970 return;
971 }
972 }
973
974 msleep_interruptible(4000);
975}
976
977static int cxacru_find_firmware(struct cxacru_data *instance,
978 char* phase, const struct firmware **fw_p)
979{
0ec3c7e8
DS		 980 struct usbatm_data *usbatm = instance->usbatm;
981 struct device *dev = &usbatm->usb_intf->dev;
1b0e6146
DS		 982 char buf[16];
983
984 sprintf(buf, "cxacru-%s.bin", phase);
985 dbg("cxacru_find_firmware: looking for %s", buf);
986
987 if (request_firmware(fw_p, buf, dev)) {
0ec3c7e8 988 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
1b0e6146
DS		 989 return -ENOENT;
990 }
991
0ec3c7e8 992 usb_info(usbatm, "found firmware %s\n", buf);
1b0e6146
DS		 993
994 return 0;
995}
996
997static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
998 struct usb_interface *usb_intf)
999{
1b0e6146
DS		 1000 const struct firmware *fw, *bp, *cf;
1001 struct cxacru_data *instance = usbatm_instance->driver_data;
1002
1003 int ret = cxacru_find_firmware(instance, "fw", &fw);
1004 if (ret) {
0ec3c7e8 1005 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 1006 return ret;
1007 }
1008
1009 if (instance->modem_type->boot_rom_patch) {
1010 ret = cxacru_find_firmware(instance, "bp", &bp);
1011 if (ret) {
0ec3c7e8 1012 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 1013 release_firmware(fw);
1014 return ret;
1015 }
1016 }
1017
1018 if (cxacru_find_firmware(instance, "cf", &cf)) /* optional */
1019 cf = NULL;
1020
1021 cxacru_upload_firmware(instance, fw, bp, cf);
1022
1023 if (cf)
1024 release_firmware(cf);
1025 if (instance->modem_type->boot_rom_patch)
1026 release_firmware(bp);
1027 release_firmware(fw);
1028
1029 ret = cxacru_card_status(instance);
1030 if (ret)
1031 dbg("modem initialisation failed");
1032 else
1033 dbg("done setting up the modem");
1034
1035 return ret;
1036}
1037
1038static int cxacru_bind(struct usbatm_data *usbatm_instance,
35644b0c 1039 struct usb_interface *intf, const struct usb_device_id *id)
1b0e6146
DS		 1040{
1041 struct cxacru_data *instance;
1042 struct usb_device *usb_dev = interface_to_usbdev(intf);
1043 int ret;
1044
1045 /* instance init */
9a734efe 1046 instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1b0e6146
DS		 1047 if (!instance) {
1048 dbg("cxacru_bind: no memory for instance data");
1049 return -ENOMEM;
1050 }
1051
1b0e6146
DS		 1052 instance->usbatm = usbatm_instance;
1053 instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1054
6a02c996
SA		 1055 mutex_init(&instance->poll_state_serialize);
1056 instance->poll_state = CXPOLL_STOPPED;
1057 instance->line_status = -1;
1058 instance->adsl_status = -1;
1059
1060 mutex_init(&instance->adsl_state_serialize);
1061
1b0e6146
DS		 1062 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1063 if (!instance->rcv_buf) {
1064 dbg("cxacru_bind: no memory for rcv_buf");
1065 ret = -ENOMEM;
1066 goto fail;
1067 }
1068 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1069 if (!instance->snd_buf) {
1070 dbg("cxacru_bind: no memory for snd_buf");
1071 ret = -ENOMEM;
1072 goto fail;
1073 }
1074 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1075 if (!instance->rcv_urb) {
1076 dbg("cxacru_bind: no memory for rcv_urb");
1077 ret = -ENOMEM;
1078 goto fail;
1079 }
1080 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1081 if (!instance->snd_urb) {
1082 dbg("cxacru_bind: no memory for snd_urb");
1083 ret = -ENOMEM;
1084 goto fail;
1085 }
1086
1087 usb_fill_int_urb(instance->rcv_urb,
1088 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1089 instance->rcv_buf, PAGE_SIZE,
1090 cxacru_blocking_completion, &instance->rcv_done, 1);
1b0e6146
DS		 1091
1092 usb_fill_int_urb(instance->snd_urb,
1093 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1094 instance->snd_buf, PAGE_SIZE,
1095 cxacru_blocking_completion, &instance->snd_done, 4);
1b0e6146 1096
ab3c81ff 1097 mutex_init(&instance->cm_serialize);
1b0e6146 1098
c4028958 1099 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1b0e6146
DS		 1100
1101 usbatm_instance->driver_data = instance;
1102
35644b0c 1103 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1b0e6146
DS		 1104
1105 return 0;
1106
1107 fail:
1108 free_page((unsigned long) instance->snd_buf);
1109 free_page((unsigned long) instance->rcv_buf);
1110 usb_free_urb(instance->snd_urb);
1111 usb_free_urb(instance->rcv_urb);
1112 kfree(instance);
1113
1114 return ret;
1115}
1116
1117static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1118 struct usb_interface *intf)
1119{
1120 struct cxacru_data *instance = usbatm_instance->driver_data;
6a02c996 1121 int is_polling = 1;
1b0e6146
DS		 1122
1123 dbg("cxacru_unbind entered");
1124
1125 if (!instance) {
1126 dbg("cxacru_unbind: NULL instance!");
1127 return;
1128 }
1129
6a02c996
SA		 1130 mutex_lock(&instance->poll_state_serialize);
1131 BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1132
1133 /* ensure that status polling continues unless
1134 * it has already stopped */
1135 if (instance->poll_state == CXPOLL_STOPPED)
1136 is_polling = 0;
1137
1138 /* stop polling from being stopped or started */
1139 instance->poll_state = CXPOLL_SHUTDOWN;
1140 mutex_unlock(&instance->poll_state_serialize);
1141
1142 if (is_polling)
1143 cancel_rearming_delayed_work(&instance->poll_work);
1b0e6146
DS		 1144
1145 usb_kill_urb(instance->snd_urb);
1146 usb_kill_urb(instance->rcv_urb);
1147 usb_free_urb(instance->snd_urb);
1148 usb_free_urb(instance->rcv_urb);
1149
1150 free_page((unsigned long) instance->snd_buf);
1151 free_page((unsigned long) instance->rcv_buf);
fa70fe44 1152
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DS		 1153 kfree(instance);
1154
1155 usbatm_instance->driver_data = NULL;
1156}
1157
1158static const struct cxacru_modem_type cxacru_cafe = {
1159 .pll_f_clk = 0x02d874df,
1160 .pll_b_clk = 0x0196a51a,
1161 .boot_rom_patch = 1,
1162};
1163
1164static const struct cxacru_modem_type cxacru_cb00 = {
1165 .pll_f_clk = 0x5,
1166 .pll_b_clk = 0x3,
1167 .boot_rom_patch = 0,
1168};
1169
1170static const struct usb_device_id cxacru_usb_ids[] = {
1171 { /* V = Conexant P = ADSL modem (Euphrates project) */
1172 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
1173 },
1174 { /* V = Conexant P = ADSL modem (Hasbani project) */
1175 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
1176 },
1177 { /* V = Conexant P = ADSL modem */
1178 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1179 },
0ec3c7e8
DS		 1180 { /* V = Conexant P = ADSL modem (Well PTI-800) */
1181 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
1182 },
1b0e6146
DS		 1183 { /* V = Conexant P = ADSL modem */
1184 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
1185 },
44960af1
DS		 1186 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */
1187 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00
1188 },
1b0e6146
DS		 1189 { /* V = Olitec P = ADSL modem version 2 */
1190 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
1191 },
1192 { /* V = Olitec P = ADSL modem version 3 */
1193 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
1194 },
1195 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
1196 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
1197 },
1198 { /* V = Zoom P = 5510 */
1199 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
1200 },
1201 { /* V = Draytek P = Vigor 318 */
1202 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
1203 },
1204 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
1205 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
1206 },
1207 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
1208 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
1209 },
1210 { /* V = Aethra P = Starmodem UM1020 */
1211 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
1212 },
1213 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
1214 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
1215 },
1216 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
1217 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
1218 },
1219 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
1220 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
1221 },
1222 {}
1223};
1224
1225MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1226
1227static struct usbatm_driver cxacru_driver = {
1b0e6146
DS		 1228 .driver_name = cxacru_driver_name,
1229 .bind = cxacru_bind,
1230 .heavy_init = cxacru_heavy_init,
1231 .unbind = cxacru_unbind,
1232 .atm_start = cxacru_atm_start,
da1f82b5 1233 .atm_stop = cxacru_remove_device_files,
80aae7a1
DS		 1234 .bulk_in = CXACRU_EP_DATA,
1235 .bulk_out = CXACRU_EP_DATA,
1b0e6146
DS		 1236 .rx_padding = 3,
1237 .tx_padding = 11,
1238};
1239
1240static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1241{
1242 return usbatm_usb_probe(intf, id, &cxacru_driver);
1243}
1244
1245static struct usb_driver cxacru_usb_driver = {
1b0e6146
DS		 1246 .name = cxacru_driver_name,
1247 .probe = cxacru_usb_probe,
1248 .disconnect = usbatm_usb_disconnect,
1249 .id_table = cxacru_usb_ids
1250};
1251
1252static int __init cxacru_init(void)
1253{
1254 return usb_register(&cxacru_usb_driver);
1255}
1256
1257static void __exit cxacru_cleanup(void)
1258{
1259 usb_deregister(&cxacru_usb_driver);
1260}
1261
1262module_init(cxacru_init);
1263module_exit(cxacru_cleanup);
1264
1265MODULE_AUTHOR(DRIVER_AUTHOR);
1266MODULE_DESCRIPTION(DRIVER_DESC);
1267MODULE_LICENSE("GPL");
1268MODULE_VERSION(DRIVER_VERSION);
Linux 6.x block layer and io_uring tree(s)