tree-wide: fix assorted typos all over the place
[linux-2.6.git] / drivers / usb / atm / cxacru.c
1 /******************************************************************************
2  *  cxacru.c  -  driver for USB ADSL modems based on
3  *               Conexant AccessRunner chipset
4  *
5  *  Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
6  *  Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
7  *  Copyright (C) 2007 Simon Arlott
8  *
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>
38 #include <linux/device.h>
39 #include <linux/firmware.h>
40 #include <linux/mutex.h>
41 #include <asm/unaligned.h>
42
43 #include "usbatm.h"
44
45 #define DRIVER_AUTHOR   "Roman Kagan, David Woodhouse, Duncan Sands, Simon Arlott"
46 #define DRIVER_VERSION  "0.3"
47 #define DRIVER_DESC     "Conexant AccessRunner ADSL USB modem driver"
48
49 static 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 */
69 #define POLL_INTERVAL   1       /* secs */
70
71 /* commands for interaction with the modem through the control channel before
72  * firmware is loaded  */
73 enum 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  */
85 enum 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 */
109 enum 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 */
121 enum 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
151 enum cxacru_poll_state {
152         CXPOLL_STOPPING,
153         CXPOLL_STOPPED,
154         CXPOLL_POLLING,
155         CXPOLL_SHUTDOWN
156 };
157
158 struct cxacru_modem_type {
159         u32 pll_f_clk;
160         u32 pll_b_clk;
161         int boot_rom_patch;
162 };
163
164 struct cxacru_data {
165         struct usbatm_data *usbatm;
166
167         const struct cxacru_modem_type *modem_type;
168
169         int line_status;
170         struct mutex adsl_state_serialize;
171         int adsl_status;
172         struct delayed_work poll_work;
173         u32 card_info[CXINF_MAX];
174         struct mutex poll_state_serialize;
175         enum cxacru_poll_state poll_state;
176
177         /* contol handles */
178         struct mutex cm_serialize;
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
187 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
188         u8 *wdata, int wsize, u8 *rdata, int rsize);
189 static void cxacru_poll_status(struct work_struct *work);
190
191 /* Card info exported through sysfs */
192 #define CXACRU__ATTR_INIT(_name) \
193 static DEVICE_ATTR(_name, S_IRUGO, cxacru_sysfs_show_##_name, NULL)
194
195 #define CXACRU_CMD_INIT(_name) \
196 static DEVICE_ATTR(_name, S_IWUSR | S_IRUGO, \
197         cxacru_sysfs_show_##_name, cxacru_sysfs_store_##_name)
198
199 #define CXACRU_ATTR_INIT(_value, _type, _name) \
200 static 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 } \
208 CXACRU__ATTR_INIT(_name)
209
210 #define CXACRU_ATTR_CREATE(_v, _t, _name) CXACRU_DEVICE_CREATE_FILE(_name)
211 #define CXACRU_CMD_CREATE(_name)          CXACRU_DEVICE_CREATE_FILE(_name)
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)
215 #define CXACRU_CMD_REMOVE(_name)          CXACRU_DEVICE_REMOVE_FILE(_name)
216 #define CXACRU__ATTR_REMOVE(_name)        CXACRU_DEVICE_REMOVE_FILE(_name)
217
218 static ssize_t cxacru_sysfs_showattr_u32(u32 value, char *buf)
219 {
220         return snprintf(buf, PAGE_SIZE, "%u\n", value);
221 }
222
223 static ssize_t cxacru_sysfs_showattr_s8(s8 value, char *buf)
224 {
225         return snprintf(buf, PAGE_SIZE, "%d\n", value);
226 }
227
228 static ssize_t cxacru_sysfs_showattr_dB(s16 value, char *buf)
229 {
230         if (likely(value >= 0)) {
231                 return snprintf(buf, PAGE_SIZE, "%u.%02u\n",
232                                         value / 100, value % 100);
233         } else {
234                 value = -value;
235                 return snprintf(buf, PAGE_SIZE, "-%u.%02u\n",
236                                         value / 100, value % 100);
237         }
238 }
239
240 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
241 {
242         static char *str[] = { "no", "yes" };
243         if (unlikely(value >= ARRAY_SIZE(str)))
244                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
245         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
246 }
247
248 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
249 {
250         static char *str[] = { NULL, "not connected", "connected", "lost" };
251         if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
252                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
253         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
254 }
255
256 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
257 {
258         static char *str[] = { "down", "attempting to activate",
259                 "training", "channel analysis", "exchange", "up",
260                 "waiting", "initialising"
261         };
262         if (unlikely(value >= ARRAY_SIZE(str)))
263                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
264         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
265 }
266
267 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
268 {
269         static char *str[] = {
270                         NULL,
271                         "ANSI T1.413",
272                         "ITU-T G.992.1 (G.DMT)",
273                         "ITU-T G.992.2 (G.LITE)"
274         };
275         if (unlikely(value >= ARRAY_SIZE(str) || str[value] == NULL))
276                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
277         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
278 }
279
280 /*
281  * This could use MAC_ADDRESS_HIGH and MAC_ADDRESS_LOW, but since
282  * this data is already in atm_dev there's no point.
283  *
284  * MAC_ADDRESS_HIGH = 0x????5544
285  * MAC_ADDRESS_LOW  = 0x33221100
286  * Where 00-55 are bytes 0-5 of the MAC.
287  */
288 static ssize_t cxacru_sysfs_show_mac_address(struct device *dev,
289         struct device_attribute *attr, char *buf)
290 {
291         struct usb_interface *intf = to_usb_interface(dev);
292         struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
293         struct atm_dev *atm_dev = usbatm_instance->atm_dev;
294
295         return snprintf(buf, PAGE_SIZE, "%pM\n", atm_dev->esi);
296 }
297
298 static ssize_t cxacru_sysfs_show_adsl_state(struct device *dev,
299         struct device_attribute *attr, char *buf)
300 {
301         struct usb_interface *intf = to_usb_interface(dev);
302         struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
303         struct cxacru_data *instance = usbatm_instance->driver_data;
304         u32 value = instance->card_info[CXINF_LINE_STARTABLE];
305
306         static char *str[] = { "running", "stopped" };
307         if (unlikely(value >= ARRAY_SIZE(str)))
308                 return snprintf(buf, PAGE_SIZE, "%u\n", value);
309         return snprintf(buf, PAGE_SIZE, "%s\n", str[value]);
310 }
311
312 static ssize_t cxacru_sysfs_store_adsl_state(struct device *dev,
313         struct device_attribute *attr, const char *buf, size_t count)
314 {
315         struct usb_interface *intf = to_usb_interface(dev);
316         struct usbatm_data *usbatm_instance = usb_get_intfdata(intf);
317         struct cxacru_data *instance = usbatm_instance->driver_data;
318         int ret;
319         int poll = -1;
320         char str_cmd[8];
321         int len = strlen(buf);
322
323         if (!capable(CAP_NET_ADMIN))
324                 return -EACCES;
325
326         ret = sscanf(buf, "%7s", str_cmd);
327         if (ret != 1)
328                 return -EINVAL;
329         ret = 0;
330
331         if (mutex_lock_interruptible(&instance->adsl_state_serialize))
332                 return -ERESTARTSYS;
333
334         if (!strcmp(str_cmd, "stop") || !strcmp(str_cmd, "restart")) {
335                 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_STOP, NULL, 0, NULL, 0);
336                 if (ret < 0) {
337                         atm_err(usbatm_instance, "change adsl state:"
338                                 " CHIP_ADSL_LINE_STOP returned %d\n", ret);
339
340                         ret = -EIO;
341                 } else {
342                         ret = len;
343                         poll = CXPOLL_STOPPED;
344                 }
345         }
346
347         /* Line status is only updated every second
348          * and the device appears to only react to
349          * START/STOP every second too. Wait 1.5s to
350          * be sure that restart will have an effect. */
351         if (!strcmp(str_cmd, "restart"))
352                 msleep(1500);
353
354         if (!strcmp(str_cmd, "start") || !strcmp(str_cmd, "restart")) {
355                 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
356                 if (ret < 0) {
357                         atm_err(usbatm_instance, "change adsl state:"
358                                 " CHIP_ADSL_LINE_START returned %d\n", ret);
359
360                         ret = -EIO;
361                 } else {
362                         ret = len;
363                         poll = CXPOLL_POLLING;
364                 }
365         }
366
367         if (!strcmp(str_cmd, "poll")) {
368                 ret = len;
369                 poll = CXPOLL_POLLING;
370         }
371
372         if (ret == 0) {
373                 ret = -EINVAL;
374                 poll = -1;
375         }
376
377         if (poll == CXPOLL_POLLING) {
378                 mutex_lock(&instance->poll_state_serialize);
379                 switch (instance->poll_state) {
380                 case CXPOLL_STOPPED:
381                         /* start polling */
382                         instance->poll_state = CXPOLL_POLLING;
383                         break;
384
385                 case CXPOLL_STOPPING:
386                         /* abort stop request */
387                         instance->poll_state = CXPOLL_POLLING;
388                 case CXPOLL_POLLING:
389                 case CXPOLL_SHUTDOWN:
390                         /* don't start polling */
391                         poll = -1;
392                 }
393                 mutex_unlock(&instance->poll_state_serialize);
394         } else if (poll == CXPOLL_STOPPED) {
395                 mutex_lock(&instance->poll_state_serialize);
396                 /* request stop */
397                 if (instance->poll_state == CXPOLL_POLLING)
398                         instance->poll_state = CXPOLL_STOPPING;
399                 mutex_unlock(&instance->poll_state_serialize);
400         }
401
402         mutex_unlock(&instance->adsl_state_serialize);
403
404         if (poll == CXPOLL_POLLING)
405                 cxacru_poll_status(&instance->poll_work.work);
406
407         return ret;
408 }
409
410 /*
411  * All device attributes are included in CXACRU_ALL_FILES
412  * so that the same list can be used multiple times:
413  *     INIT   (define the device attributes)
414  *     CREATE (create all the device files)
415  *     REMOVE (remove all the device files)
416  *
417  * With the last two being defined as needed in the functions
418  * they are used in before calling CXACRU_ALL_FILES()
419  */
420 #define CXACRU_ALL_FILES(_action) \
421 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE,           u32,  downstream_rate); \
422 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE,             u32,  upstream_rate); \
423 CXACRU_ATTR_##_action(CXINF_LINK_STATUS,               LINK, link_status); \
424 CXACRU_ATTR_##_action(CXINF_LINE_STATUS,               LINE, line_status); \
425 CXACRU__ATTR_##_action(                                      mac_address); \
426 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN,       dB,   upstream_snr_margin); \
427 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN,     dB,   downstream_snr_margin); \
428 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION,      dB,   upstream_attenuation); \
429 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION,    dB,   downstream_attenuation); \
430 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER,         s8,   transmitter_power); \
431 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME,   u32,  upstream_bits_per_frame); \
432 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32,  downstream_bits_per_frame); \
433 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS,          u32,  startup_attempts); \
434 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS,       u32,  upstream_crc_errors); \
435 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS,     u32,  downstream_crc_errors); \
436 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS,       u32,  upstream_fec_errors); \
437 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS,     u32,  downstream_fec_errors); \
438 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS,       u32,  upstream_hec_errors); \
439 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS,     u32,  downstream_hec_errors); \
440 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE,            bool, line_startable); \
441 CXACRU_ATTR_##_action(CXINF_MODULATION,                MODU, modulation); \
442 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND,              u32,  adsl_headend); \
443 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT,  u32,  adsl_headend_environment); \
444 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION,        u32,  adsl_controller_version); \
445 CXACRU_CMD_##_action(                                        adsl_state);
446
447 CXACRU_ALL_FILES(INIT);
448
449 /* the following three functions are stolen from drivers/usb/core/message.c */
450 static void cxacru_blocking_completion(struct urb *urb)
451 {
452         complete(urb->context);
453 }
454
455 static void cxacru_timeout_kill(unsigned long data)
456 {
457         usb_unlink_urb((struct urb *) data);
458 }
459
460 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
461                                  int* actual_length)
462 {
463         struct timer_list timer;
464
465         init_timer(&timer);
466         timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
467         timer.data = (unsigned long) urb;
468         timer.function = cxacru_timeout_kill;
469         add_timer(&timer);
470         wait_for_completion(done);
471         del_timer_sync(&timer);
472
473         if (actual_length)
474                 *actual_length = urb->actual_length;
475         return urb->status; /* must read status after completion */
476 }
477
478 static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
479                      u8 *wdata, int wsize, u8 *rdata, int rsize)
480 {
481         int ret, actlen;
482         int offb, offd;
483         const int stride = CMD_PACKET_SIZE - 4;
484         u8 *wbuf = instance->snd_buf;
485         u8 *rbuf = instance->rcv_buf;
486         int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
487         int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
488
489         if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
490                 if (printk_ratelimit())
491                         usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
492                                 wbuflen, rbuflen);
493                 ret = -ENOMEM;
494                 goto err;
495         }
496
497         mutex_lock(&instance->cm_serialize);
498
499         /* submit reading urb before the writing one */
500         init_completion(&instance->rcv_done);
501         ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
502         if (ret < 0) {
503                 if (printk_ratelimit())
504                         usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
505                                 cm, ret);
506                 goto fail;
507         }
508
509         memset(wbuf, 0, wbuflen);
510         /* handle wsize == 0 */
511         wbuf[0] = cm;
512         for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
513                 wbuf[offb] = cm;
514                 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
515         }
516
517         instance->snd_urb->transfer_buffer_length = wbuflen;
518         init_completion(&instance->snd_done);
519         ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
520         if (ret < 0) {
521                 if (printk_ratelimit())
522                         usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
523                                 cm, ret);
524                 goto fail;
525         }
526
527         ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
528         if (ret < 0) {
529                 if (printk_ratelimit())
530                         usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
531                 goto fail;
532         }
533
534         ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
535         if (ret < 0) {
536                 if (printk_ratelimit())
537                         usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
538                 goto fail;
539         }
540         if (actlen % CMD_PACKET_SIZE || !actlen) {
541                 if (printk_ratelimit())
542                         usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
543                                 cm, actlen);
544                 ret = -EIO;
545                 goto fail;
546         }
547
548         /* check the return status and copy the data to the output buffer, if needed */
549         for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
550                 if (rbuf[offb] != cm) {
551                         if (printk_ratelimit())
552                                 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
553                                         rbuf[offb], cm);
554                         ret = -EIO;
555                         goto fail;
556                 }
557                 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
558                         if (printk_ratelimit())
559                                 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
560                                         cm, rbuf[offb + 1]);
561                         ret = -EIO;
562                         goto fail;
563                 }
564                 if (offd >= rsize)
565                         break;
566                 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
567                 offd += stride;
568         }
569
570         ret = offd;
571         dbg("cm %#x", cm);
572 fail:
573         mutex_unlock(&instance->cm_serialize);
574 err:
575         return ret;
576 }
577
578 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
579                                u32 *data, int size)
580 {
581         int ret, len;
582         __le32 *buf;
583         int offb, offd;
584         const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
585         int buflen =  ((size - 1) / stride + 1 + size * 2) * 4;
586
587         buf = kmalloc(buflen, GFP_KERNEL);
588         if (!buf)
589                 return -ENOMEM;
590
591         ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
592         if (ret < 0)
593                 goto cleanup;
594
595         /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
596         len = ret / 4;
597         for (offb = 0; offb < len; ) {
598                 int l = le32_to_cpu(buf[offb++]);
599                 if (l > stride || l > (len - offb) / 2) {
600                         if (printk_ratelimit())
601                                 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
602                                         cm, l);
603                         ret = -EIO;
604                         goto cleanup;
605                 }
606                 while (l--) {
607                         offd = le32_to_cpu(buf[offb++]);
608                         if (offd >= size) {
609                                 if (printk_ratelimit())
610                                         usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
611                                                 offd, cm);
612                                 ret = -EIO;
613                                 goto cleanup;
614                         }
615                         data[offd] = le32_to_cpu(buf[offb++]);
616                 }
617         }
618
619         ret = 0;
620
621 cleanup:
622         kfree(buf);
623         return ret;
624 }
625
626 static int cxacru_card_status(struct cxacru_data *instance)
627 {
628         int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
629         if (ret < 0) {          /* firmware not loaded */
630                 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
631                 return ret;
632         }
633         return 0;
634 }
635
636 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
637                 struct atm_dev *atm_dev)
638 {
639         struct usb_interface *intf = usbatm_instance->usb_intf;
640
641         #define CXACRU_DEVICE_REMOVE_FILE(_name) \
642                 device_remove_file(&intf->dev, &dev_attr_##_name);
643         CXACRU_ALL_FILES(REMOVE);
644         #undef CXACRU_DEVICE_REMOVE_FILE
645 }
646
647 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
648                 struct atm_dev *atm_dev)
649 {
650         struct cxacru_data *instance = usbatm_instance->driver_data;
651         struct usb_interface *intf = usbatm_instance->usb_intf;
652         /*
653         struct atm_dev *atm_dev = usbatm_instance->atm_dev;
654         */
655         int ret;
656         int start_polling = 1;
657
658         dbg("cxacru_atm_start");
659
660         /* Read MAC address */
661         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
662                         atm_dev->esi, sizeof(atm_dev->esi));
663         if (ret < 0) {
664                 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
665                 return ret;
666         }
667
668         #define CXACRU_DEVICE_CREATE_FILE(_name) \
669                 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
670                 if (unlikely(ret)) \
671                         goto fail_sysfs;
672         CXACRU_ALL_FILES(CREATE);
673         #undef CXACRU_DEVICE_CREATE_FILE
674
675         /* start ADSL */
676         mutex_lock(&instance->adsl_state_serialize);
677         ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
678         if (ret < 0)
679                 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
680
681         /* Start status polling */
682         mutex_lock(&instance->poll_state_serialize);
683         switch (instance->poll_state) {
684         case CXPOLL_STOPPED:
685                 /* start polling */
686                 instance->poll_state = CXPOLL_POLLING;
687                 break;
688
689         case CXPOLL_STOPPING:
690                 /* abort stop request */
691                 instance->poll_state = CXPOLL_POLLING;
692         case CXPOLL_POLLING:
693         case CXPOLL_SHUTDOWN:
694                 /* don't start polling */
695                 start_polling = 0;
696         }
697         mutex_unlock(&instance->poll_state_serialize);
698         mutex_unlock(&instance->adsl_state_serialize);
699
700         if (start_polling)
701                 cxacru_poll_status(&instance->poll_work.work);
702         return 0;
703
704 fail_sysfs:
705         usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
706         cxacru_remove_device_files(usbatm_instance, atm_dev);
707         return ret;
708 }
709
710 static void cxacru_poll_status(struct work_struct *work)
711 {
712         struct cxacru_data *instance =
713                 container_of(work, struct cxacru_data, poll_work.work);
714         u32 buf[CXINF_MAX] = {};
715         struct usbatm_data *usbatm = instance->usbatm;
716         struct atm_dev *atm_dev = usbatm->atm_dev;
717         int keep_polling = 1;
718         int ret;
719
720         ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
721         if (ret < 0) {
722                 if (ret != -ESHUTDOWN)
723                         atm_warn(usbatm, "poll status: error %d\n", ret);
724
725                 mutex_lock(&instance->poll_state_serialize);
726                 if (instance->poll_state != CXPOLL_SHUTDOWN) {
727                         instance->poll_state = CXPOLL_STOPPED;
728
729                         if (ret != -ESHUTDOWN)
730                                 atm_warn(usbatm, "polling disabled, set adsl_state"
731                                                 " to 'start' or 'poll' to resume\n");
732                 }
733                 mutex_unlock(&instance->poll_state_serialize);
734                 goto reschedule;
735         }
736
737         memcpy(instance->card_info, buf, sizeof(instance->card_info));
738
739         if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
740                 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
741
742                 switch (instance->adsl_status) {
743                 case 0:
744                         atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
745                         break;
746
747                 case 1:
748                         atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
749                         break;
750
751                 default:
752                         atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
753                         break;
754                 }
755         }
756
757         if (instance->line_status == buf[CXINF_LINE_STATUS])
758                 goto reschedule;
759
760         instance->line_status = buf[CXINF_LINE_STATUS];
761         switch (instance->line_status) {
762         case 0:
763                 atm_dev->signal = ATM_PHY_SIG_LOST;
764                 atm_info(usbatm, "ADSL line: down\n");
765                 break;
766
767         case 1:
768                 atm_dev->signal = ATM_PHY_SIG_LOST;
769                 atm_info(usbatm, "ADSL line: attempting to activate\n");
770                 break;
771
772         case 2:
773                 atm_dev->signal = ATM_PHY_SIG_LOST;
774                 atm_info(usbatm, "ADSL line: training\n");
775                 break;
776
777         case 3:
778                 atm_dev->signal = ATM_PHY_SIG_LOST;
779                 atm_info(usbatm, "ADSL line: channel analysis\n");
780                 break;
781
782         case 4:
783                 atm_dev->signal = ATM_PHY_SIG_LOST;
784                 atm_info(usbatm, "ADSL line: exchange\n");
785                 break;
786
787         case 5:
788                 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
789                 atm_dev->signal = ATM_PHY_SIG_FOUND;
790
791                 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
792                      buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
793                 break;
794
795         case 6:
796                 atm_dev->signal = ATM_PHY_SIG_LOST;
797                 atm_info(usbatm, "ADSL line: waiting\n");
798                 break;
799
800         case 7:
801                 atm_dev->signal = ATM_PHY_SIG_LOST;
802                 atm_info(usbatm, "ADSL line: initializing\n");
803                 break;
804
805         default:
806                 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
807                 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
808                 break;
809         }
810 reschedule:
811
812         mutex_lock(&instance->poll_state_serialize);
813         if (instance->poll_state == CXPOLL_STOPPING &&
814                                 instance->adsl_status == 1 && /* stopped */
815                                 instance->line_status == 0) /* down */
816                 instance->poll_state = CXPOLL_STOPPED;
817
818         if (instance->poll_state == CXPOLL_STOPPED)
819                 keep_polling = 0;
820         mutex_unlock(&instance->poll_state_serialize);
821
822         if (keep_polling)
823                 schedule_delayed_work(&instance->poll_work,
824                                 round_jiffies_relative(POLL_INTERVAL*HZ));
825 }
826
827 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
828                      u8 code1, u8 code2, u32 addr, const u8 *data, int size)
829 {
830         int ret;
831         u8 *buf;
832         int offd, offb;
833         const int stride = CMD_PACKET_SIZE - 8;
834
835         buf = (u8 *) __get_free_page(GFP_KERNEL);
836         if (!buf)
837                 return -ENOMEM;
838
839         offb = offd = 0;
840         do {
841                 int l = min_t(int, stride, size - offd);
842                 buf[offb++] = fw;
843                 buf[offb++] = l;
844                 buf[offb++] = code1;
845                 buf[offb++] = code2;
846                 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb));
847                 offb += 4;
848                 addr += l;
849                 if(l)
850                         memcpy(buf + offb, data + offd, l);
851                 if (l < stride)
852                         memset(buf + offb + l, 0, stride - l);
853                 offb += stride;
854                 offd += stride;
855                 if ((offb >= PAGE_SIZE) || (offd >= size)) {
856                         ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
857                                            buf, offb, NULL, CMD_TIMEOUT);
858                         if (ret < 0) {
859                                 dbg("sending fw %#x failed", fw);
860                                 goto cleanup;
861                         }
862                         offb = 0;
863                 }
864         } while(offd < size);
865         dbg("sent fw %#x", fw);
866
867         ret = 0;
868
869 cleanup:
870         free_page((unsigned long) buf);
871         return ret;
872 }
873
874 static void cxacru_upload_firmware(struct cxacru_data *instance,
875                                    const struct firmware *fw,
876                                    const struct firmware *bp,
877                                    const struct firmware *cf)
878 {
879         int ret;
880         int off;
881         struct usbatm_data *usbatm = instance->usbatm;
882         struct usb_device *usb_dev = usbatm->usb_dev;
883         __le16 signature[] = { usb_dev->descriptor.idVendor,
884                                usb_dev->descriptor.idProduct };
885         __le32 val;
886
887         dbg("cxacru_upload_firmware");
888
889         /* FirmwarePllFClkValue */
890         val = cpu_to_le32(instance->modem_type->pll_f_clk);
891         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
892         if (ret) {
893                 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
894                 return;
895         }
896
897         /* FirmwarePllBClkValue */
898         val = cpu_to_le32(instance->modem_type->pll_b_clk);
899         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
900         if (ret) {
901                 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
902                 return;
903         }
904
905         /* Enable SDRAM */
906         val = cpu_to_le32(SDRAM_ENA);
907         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
908         if (ret) {
909                 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
910                 return;
911         }
912
913         /* Firmware */
914         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
915         if (ret) {
916                 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
917                 return;
918         }
919
920         /* Boot ROM patch */
921         if (instance->modem_type->boot_rom_patch) {
922                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
923                 if (ret) {
924                         usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
925                         return;
926                 }
927         }
928
929         /* Signature */
930         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
931         if (ret) {
932                 usb_err(usbatm, "Signature storing failed: %d\n", ret);
933                 return;
934         }
935
936         if (instance->modem_type->boot_rom_patch) {
937                 val = cpu_to_le32(BR_ADDR);
938                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
939         }
940         else {
941                 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
942         }
943         if (ret) {
944                 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
945                 return;
946         }
947
948         /* Delay to allow firmware to start up. */
949         msleep_interruptible(1000);
950
951         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
952         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
953         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
954         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
955
956         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
957         if (ret < 0) {
958                 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
959                 return;
960         }
961
962         /* Load config data (le32), doing one packet at a time */
963         if (cf)
964                 for (off = 0; off < cf->size / 4; ) {
965                         __le32 buf[CMD_PACKET_SIZE / 4 - 1];
966                         int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
967                         buf[0] = cpu_to_le32(len);
968                         for (i = 0; i < len; i++, off++) {
969                                 buf[i * 2 + 1] = cpu_to_le32(off);
970                                 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
971                         }
972                         ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
973                                         (u8 *) buf, len, NULL, 0);
974                         if (ret < 0) {
975                                 usb_err(usbatm, "load config data failed: %d\n", ret);
976                                 return;
977                         }
978                 }
979
980         msleep_interruptible(4000);
981 }
982
983 static int cxacru_find_firmware(struct cxacru_data *instance,
984                                 char* phase, const struct firmware **fw_p)
985 {
986         struct usbatm_data *usbatm = instance->usbatm;
987         struct device *dev = &usbatm->usb_intf->dev;
988         char buf[16];
989
990         sprintf(buf, "cxacru-%s.bin", phase);
991         dbg("cxacru_find_firmware: looking for %s", buf);
992
993         if (request_firmware(fw_p, buf, dev)) {
994                 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
995                 return -ENOENT;
996         }
997
998         usb_info(usbatm, "found firmware %s\n", buf);
999
1000         return 0;
1001 }
1002
1003 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
1004                              struct usb_interface *usb_intf)
1005 {
1006         const struct firmware *fw, *bp, *cf;
1007         struct cxacru_data *instance = usbatm_instance->driver_data;
1008
1009         int ret = cxacru_find_firmware(instance, "fw", &fw);
1010         if (ret) {
1011                 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1012                 return ret;
1013         }
1014
1015         if (instance->modem_type->boot_rom_patch) {
1016                 ret = cxacru_find_firmware(instance, "bp", &bp);
1017                 if (ret) {
1018                         usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1019                         release_firmware(fw);
1020                         return ret;
1021                 }
1022         }
1023
1024         if (cxacru_find_firmware(instance, "cf", &cf))          /* optional */
1025                 cf = NULL;
1026
1027         cxacru_upload_firmware(instance, fw, bp, cf);
1028
1029         if (cf)
1030                 release_firmware(cf);
1031         if (instance->modem_type->boot_rom_patch)
1032                 release_firmware(bp);
1033         release_firmware(fw);
1034
1035         ret = cxacru_card_status(instance);
1036         if (ret)
1037                 dbg("modem initialisation failed");
1038         else
1039                 dbg("done setting up the modem");
1040
1041         return ret;
1042 }
1043
1044 static int cxacru_bind(struct usbatm_data *usbatm_instance,
1045                        struct usb_interface *intf, const struct usb_device_id *id)
1046 {
1047         struct cxacru_data *instance;
1048         struct usb_device *usb_dev = interface_to_usbdev(intf);
1049         int ret;
1050
1051         /* instance init */
1052         instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1053         if (!instance) {
1054                 dbg("cxacru_bind: no memory for instance data");
1055                 return -ENOMEM;
1056         }
1057
1058         instance->usbatm = usbatm_instance;
1059         instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1060
1061         mutex_init(&instance->poll_state_serialize);
1062         instance->poll_state = CXPOLL_STOPPED;
1063         instance->line_status = -1;
1064         instance->adsl_status = -1;
1065
1066         mutex_init(&instance->adsl_state_serialize);
1067
1068         instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1069         if (!instance->rcv_buf) {
1070                 dbg("cxacru_bind: no memory for rcv_buf");
1071                 ret = -ENOMEM;
1072                 goto fail;
1073         }
1074         instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1075         if (!instance->snd_buf) {
1076                 dbg("cxacru_bind: no memory for snd_buf");
1077                 ret = -ENOMEM;
1078                 goto fail;
1079         }
1080         instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1081         if (!instance->rcv_urb) {
1082                 dbg("cxacru_bind: no memory for rcv_urb");
1083                 ret = -ENOMEM;
1084                 goto fail;
1085         }
1086         instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1087         if (!instance->snd_urb) {
1088                 dbg("cxacru_bind: no memory for snd_urb");
1089                 ret = -ENOMEM;
1090                 goto fail;
1091         }
1092
1093         usb_fill_int_urb(instance->rcv_urb,
1094                         usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1095                         instance->rcv_buf, PAGE_SIZE,
1096                         cxacru_blocking_completion, &instance->rcv_done, 1);
1097
1098         usb_fill_int_urb(instance->snd_urb,
1099                         usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1100                         instance->snd_buf, PAGE_SIZE,
1101                         cxacru_blocking_completion, &instance->snd_done, 4);
1102
1103         mutex_init(&instance->cm_serialize);
1104
1105         INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1106
1107         usbatm_instance->driver_data = instance;
1108
1109         usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1110
1111         return 0;
1112
1113  fail:
1114         free_page((unsigned long) instance->snd_buf);
1115         free_page((unsigned long) instance->rcv_buf);
1116         usb_free_urb(instance->snd_urb);
1117         usb_free_urb(instance->rcv_urb);
1118         kfree(instance);
1119
1120         return ret;
1121 }
1122
1123 static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1124                 struct usb_interface *intf)
1125 {
1126         struct cxacru_data *instance = usbatm_instance->driver_data;
1127         int is_polling = 1;
1128
1129         dbg("cxacru_unbind entered");
1130
1131         if (!instance) {
1132                 dbg("cxacru_unbind: NULL instance!");
1133                 return;
1134         }
1135
1136         mutex_lock(&instance->poll_state_serialize);
1137         BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1138
1139         /* ensure that status polling continues unless
1140          * it has already stopped */
1141         if (instance->poll_state == CXPOLL_STOPPED)
1142                 is_polling = 0;
1143
1144         /* stop polling from being stopped or started */
1145         instance->poll_state = CXPOLL_SHUTDOWN;
1146         mutex_unlock(&instance->poll_state_serialize);
1147
1148         if (is_polling)
1149                 cancel_rearming_delayed_work(&instance->poll_work);
1150
1151         usb_kill_urb(instance->snd_urb);
1152         usb_kill_urb(instance->rcv_urb);
1153         usb_free_urb(instance->snd_urb);
1154         usb_free_urb(instance->rcv_urb);
1155
1156         free_page((unsigned long) instance->snd_buf);
1157         free_page((unsigned long) instance->rcv_buf);
1158
1159         kfree(instance);
1160
1161         usbatm_instance->driver_data = NULL;
1162 }
1163
1164 static const struct cxacru_modem_type cxacru_cafe = {
1165         .pll_f_clk = 0x02d874df,
1166         .pll_b_clk = 0x0196a51a,
1167         .boot_rom_patch = 1,
1168 };
1169
1170 static const struct cxacru_modem_type cxacru_cb00 = {
1171         .pll_f_clk = 0x5,
1172         .pll_b_clk = 0x3,
1173         .boot_rom_patch = 0,
1174 };
1175
1176 static const struct usb_device_id cxacru_usb_ids[] = {
1177         { /* V = Conexant                       P = ADSL modem (Euphrates project)      */
1178                 USB_DEVICE(0x0572, 0xcafe),     .driver_info = (unsigned long) &cxacru_cafe
1179         },
1180         { /* V = Conexant                       P = ADSL modem (Hasbani project)        */
1181                 USB_DEVICE(0x0572, 0xcb00),     .driver_info = (unsigned long) &cxacru_cb00
1182         },
1183         { /* V = Conexant                       P = ADSL modem                          */
1184                 USB_DEVICE(0x0572, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
1185         },
1186         { /* V = Conexant                       P = ADSL modem (Well PTI-800) */
1187                 USB_DEVICE(0x0572, 0xcb02),     .driver_info = (unsigned long) &cxacru_cb00
1188         },
1189         { /* V = Conexant                       P = ADSL modem                          */
1190                 USB_DEVICE(0x0572, 0xcb06),     .driver_info = (unsigned long) &cxacru_cb00
1191         },
1192         { /* V = Conexant                       P = ADSL modem (ZTE ZXDSL 852)          */
1193                 USB_DEVICE(0x0572, 0xcb07),     .driver_info = (unsigned long) &cxacru_cb00
1194         },
1195         { /* V = Olitec                         P = ADSL modem version 2                */
1196                 USB_DEVICE(0x08e3, 0x0100),     .driver_info = (unsigned long) &cxacru_cafe
1197         },
1198         { /* V = Olitec                         P = ADSL modem version 3                */
1199                 USB_DEVICE(0x08e3, 0x0102),     .driver_info = (unsigned long) &cxacru_cb00
1200         },
1201         { /* V = Trust/Amigo Technology Co.     P = AMX-CA86U                           */
1202                 USB_DEVICE(0x0eb0, 0x3457),     .driver_info = (unsigned long) &cxacru_cafe
1203         },
1204         { /* V = Zoom                           P = 5510                                */
1205                 USB_DEVICE(0x1803, 0x5510),     .driver_info = (unsigned long) &cxacru_cb00
1206         },
1207         { /* V = Draytek                        P = Vigor 318                           */
1208                 USB_DEVICE(0x0675, 0x0200),     .driver_info = (unsigned long) &cxacru_cb00
1209         },
1210         { /* V = Zyxel                          P = 630-C1 aka OMNI ADSL USB (Annex A)  */
1211                 USB_DEVICE(0x0586, 0x330a),     .driver_info = (unsigned long) &cxacru_cb00
1212         },
1213         { /* V = Zyxel                          P = 630-C3 aka OMNI ADSL USB (Annex B)  */
1214                 USB_DEVICE(0x0586, 0x330b),     .driver_info = (unsigned long) &cxacru_cb00
1215         },
1216         { /* V = Aethra                         P = Starmodem UM1020                    */
1217                 USB_DEVICE(0x0659, 0x0020),     .driver_info = (unsigned long) &cxacru_cb00
1218         },
1219         { /* V = Aztech Systems                 P = ? AKA Pirelli AUA-010               */
1220                 USB_DEVICE(0x0509, 0x0812),     .driver_info = (unsigned long) &cxacru_cb00
1221         },
1222         { /* V = Netopia                        P = Cayman 3341(Annex A)/3351(Annex B)  */
1223                 USB_DEVICE(0x100d, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
1224         },
1225         { /* V = Netopia                        P = Cayman 3342(Annex A)/3352(Annex B)  */
1226                 USB_DEVICE(0x100d, 0x3342),     .driver_info = (unsigned long) &cxacru_cb00
1227         },
1228         {}
1229 };
1230
1231 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1232
1233 static struct usbatm_driver cxacru_driver = {
1234         .driver_name    = cxacru_driver_name,
1235         .bind           = cxacru_bind,
1236         .heavy_init     = cxacru_heavy_init,
1237         .unbind         = cxacru_unbind,
1238         .atm_start      = cxacru_atm_start,
1239         .atm_stop       = cxacru_remove_device_files,
1240         .bulk_in        = CXACRU_EP_DATA,
1241         .bulk_out       = CXACRU_EP_DATA,
1242         .rx_padding     = 3,
1243         .tx_padding     = 11,
1244 };
1245
1246 static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1247 {
1248         return usbatm_usb_probe(intf, id, &cxacru_driver);
1249 }
1250
1251 static struct usb_driver cxacru_usb_driver = {
1252         .name           = cxacru_driver_name,
1253         .probe          = cxacru_usb_probe,
1254         .disconnect     = usbatm_usb_disconnect,
1255         .id_table       = cxacru_usb_ids
1256 };
1257
1258 static int __init cxacru_init(void)
1259 {
1260         return usb_register(&cxacru_usb_driver);
1261 }
1262
1263 static void __exit cxacru_cleanup(void)
1264 {
1265         usb_deregister(&cxacru_usb_driver);
1266 }
1267
1268 module_init(cxacru_init);
1269 module_exit(cxacru_cleanup);
1270
1271 MODULE_AUTHOR(DRIVER_AUTHOR);
1272 MODULE_DESCRIPTION(DRIVER_DESC);
1273 MODULE_LICENSE("GPL");
1274 MODULE_VERSION(DRIVER_VERSION);