USB: otg: gpio_vbus transceiver stub
[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         return snprintf(buf, PAGE_SIZE, "%d.%02u\n",
231                                         value / 100, abs(value) % 100);
232 }
233
234 static ssize_t cxacru_sysfs_showattr_bool(u32 value, char *buf)
235 {
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]);
240 }
241
242 static ssize_t cxacru_sysfs_showattr_LINK(u32 value, char *buf)
243 {
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]);
248 }
249
250 static ssize_t cxacru_sysfs_showattr_LINE(u32 value, char *buf)
251 {
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]);
259 }
260
261 static ssize_t cxacru_sysfs_showattr_MODU(u32 value, char *buf)
262 {
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]);
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  */
282 static 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
289         return snprintf(buf, PAGE_SIZE, "%pM\n", atm_dev->esi);
290 }
291
292 static 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
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]);
304 }
305
306 static 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
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) \
415 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_RATE,           u32,  downstream_rate); \
416 CXACRU_ATTR_##_action(CXINF_UPSTREAM_RATE,             u32,  upstream_rate); \
417 CXACRU_ATTR_##_action(CXINF_LINK_STATUS,               LINK, link_status); \
418 CXACRU_ATTR_##_action(CXINF_LINE_STATUS,               LINE, line_status); \
419 CXACRU__ATTR_##_action(                                      mac_address); \
420 CXACRU_ATTR_##_action(CXINF_UPSTREAM_SNR_MARGIN,       dB,   upstream_snr_margin); \
421 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_SNR_MARGIN,     dB,   downstream_snr_margin); \
422 CXACRU_ATTR_##_action(CXINF_UPSTREAM_ATTENUATION,      dB,   upstream_attenuation); \
423 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_ATTENUATION,    dB,   downstream_attenuation); \
424 CXACRU_ATTR_##_action(CXINF_TRANSMITTER_POWER,         s8,   transmitter_power); \
425 CXACRU_ATTR_##_action(CXINF_UPSTREAM_BITS_PER_FRAME,   u32,  upstream_bits_per_frame); \
426 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_BITS_PER_FRAME, u32,  downstream_bits_per_frame); \
427 CXACRU_ATTR_##_action(CXINF_STARTUP_ATTEMPTS,          u32,  startup_attempts); \
428 CXACRU_ATTR_##_action(CXINF_UPSTREAM_CRC_ERRORS,       u32,  upstream_crc_errors); \
429 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_CRC_ERRORS,     u32,  downstream_crc_errors); \
430 CXACRU_ATTR_##_action(CXINF_UPSTREAM_FEC_ERRORS,       u32,  upstream_fec_errors); \
431 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_FEC_ERRORS,     u32,  downstream_fec_errors); \
432 CXACRU_ATTR_##_action(CXINF_UPSTREAM_HEC_ERRORS,       u32,  upstream_hec_errors); \
433 CXACRU_ATTR_##_action(CXINF_DOWNSTREAM_HEC_ERRORS,     u32,  downstream_hec_errors); \
434 CXACRU_ATTR_##_action(CXINF_LINE_STARTABLE,            bool, line_startable); \
435 CXACRU_ATTR_##_action(CXINF_MODULATION,                MODU, modulation); \
436 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND,              u32,  adsl_headend); \
437 CXACRU_ATTR_##_action(CXINF_ADSL_HEADEND_ENVIRONMENT,  u32,  adsl_headend_environment); \
438 CXACRU_ATTR_##_action(CXINF_CONTROLLER_VERSION,        u32,  adsl_controller_version); \
439 CXACRU_CMD_##_action(                                        adsl_state);
440
441 CXACRU_ALL_FILES(INIT);
442
443 /* the following three functions are stolen from drivers/usb/core/message.c */
444 static void cxacru_blocking_completion(struct urb *urb)
445 {
446         complete(urb->context);
447 }
448
449 static void cxacru_timeout_kill(unsigned long data)
450 {
451         usb_unlink_urb((struct urb *) data);
452 }
453
454 static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
455                                  int* actual_length)
456 {
457         struct timer_list timer;
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);
465         del_timer_sync(&timer);
466
467         if (actual_length)
468                 *actual_length = urb->actual_length;
469         return urb->status; /* must read status after completion */
470 }
471
472 static 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) {
484                 if (printk_ratelimit())
485                         usb_err(instance->usbatm, "requested transfer size too large (%d, %d)\n",
486                                 wbuflen, rbuflen);
487                 ret = -ENOMEM;
488                 goto fail;
489         }
490
491         mutex_lock(&instance->cm_serialize);
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) {
497                 if (printk_ratelimit())
498                         usb_err(instance->usbatm, "submit of read urb for cm %#x failed (%d)\n",
499                                 cm, ret);
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) {
515                 if (printk_ratelimit())
516                         usb_err(instance->usbatm, "submit of write urb for cm %#x failed (%d)\n",
517                                 cm, ret);
518                 goto fail;
519         }
520
521         ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
522         if (ret < 0) {
523                 if (printk_ratelimit())
524                         usb_err(instance->usbatm, "send of cm %#x failed (%d)\n", cm, ret);
525                 goto fail;
526         }
527
528         ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
529         if (ret < 0) {
530                 if (printk_ratelimit())
531                         usb_err(instance->usbatm, "receive of cm %#x failed (%d)\n", cm, ret);
532                 goto fail;
533         }
534         if (actlen % CMD_PACKET_SIZE || !actlen) {
535                 if (printk_ratelimit())
536                         usb_err(instance->usbatm, "invalid response length to cm %#x: %d\n",
537                                 cm, actlen);
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) {
545                         if (printk_ratelimit())
546                                 usb_err(instance->usbatm, "wrong cm %#x in response to cm %#x\n",
547                                         rbuf[offb], cm);
548                         ret = -EIO;
549                         goto fail;
550                 }
551                 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
552                         if (printk_ratelimit())
553                                 usb_err(instance->usbatm, "response to cm %#x failed: %#x\n",
554                                         cm, rbuf[offb + 1]);
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);
566 fail:
567         mutex_unlock(&instance->cm_serialize);
568         return ret;
569 }
570
571 static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
572                                u32 *data, int size)
573 {
574         int ret, len;
575         __le32 *buf;
576         int offb, offd;
577         const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
578         int buflen =  ((size - 1) / stride + 1 + size * 2) * 4;
579
580         buf = kmalloc(buflen, GFP_KERNEL);
581         if (!buf)
582                 return -ENOMEM;
583
584         ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
585         if (ret < 0)
586                 goto cleanup;
587
588         /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
589         len = ret / 4;
590         for (offb = 0; offb < len; ) {
591                 int l = le32_to_cpu(buf[offb++]);
592                 if (l > stride || l > (len - offb) / 2) {
593                         if (printk_ratelimit())
594                                 usb_err(instance->usbatm, "invalid data length from cm %#x: %d\n",
595                                         cm, l);
596                         ret = -EIO;
597                         goto cleanup;
598                 }
599                 while (l--) {
600                         offd = le32_to_cpu(buf[offb++]);
601                         if (offd >= size) {
602                                 if (printk_ratelimit())
603                                         usb_err(instance->usbatm, "wrong index %#x in response to cm %#x\n",
604                                                 offd, cm);
605                                 ret = -EIO;
606                                 goto cleanup;
607                         }
608                         data[offd] = le32_to_cpu(buf[offb++]);
609                 }
610         }
611
612         ret = 0;
613
614 cleanup:
615         kfree(buf);
616         return ret;
617 }
618
619 static int cxacru_card_status(struct cxacru_data *instance)
620 {
621         int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
622         if (ret < 0) {          /* firmware not loaded */
623                 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
624                 return ret;
625         }
626         return 0;
627 }
628
629 static void cxacru_remove_device_files(struct usbatm_data *usbatm_instance,
630                 struct atm_dev *atm_dev)
631 {
632         struct usb_interface *intf = usbatm_instance->usb_intf;
633
634         #define CXACRU_DEVICE_REMOVE_FILE(_name) \
635                 device_remove_file(&intf->dev, &dev_attr_##_name);
636         CXACRU_ALL_FILES(REMOVE);
637         #undef CXACRU_DEVICE_REMOVE_FILE
638 }
639
640 static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
641                 struct atm_dev *atm_dev)
642 {
643         struct cxacru_data *instance = usbatm_instance->driver_data;
644         struct usb_interface *intf = usbatm_instance->usb_intf;
645         /*
646         struct atm_dev *atm_dev = usbatm_instance->atm_dev;
647         */
648         int ret;
649         int start_polling = 1;
650
651         dbg("cxacru_atm_start");
652
653         /* Read MAC address */
654         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
655                         atm_dev->esi, sizeof(atm_dev->esi));
656         if (ret < 0) {
657                 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
658                 return ret;
659         }
660
661         #define CXACRU_DEVICE_CREATE_FILE(_name) \
662                 ret = device_create_file(&intf->dev, &dev_attr_##_name); \
663                 if (unlikely(ret)) \
664                         goto fail_sysfs;
665         CXACRU_ALL_FILES(CREATE);
666         #undef CXACRU_DEVICE_CREATE_FILE
667
668         /* start ADSL */
669         mutex_lock(&instance->adsl_state_serialize);
670         ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
671         if (ret < 0)
672                 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
673
674         /* Start status polling */
675         mutex_lock(&instance->poll_state_serialize);
676         switch (instance->poll_state) {
677         case CXPOLL_STOPPED:
678                 /* start polling */
679                 instance->poll_state = CXPOLL_POLLING;
680                 break;
681
682         case CXPOLL_STOPPING:
683                 /* abort stop request */
684                 instance->poll_state = CXPOLL_POLLING;
685         case CXPOLL_POLLING:
686         case CXPOLL_SHUTDOWN:
687                 /* don't start polling */
688                 start_polling = 0;
689         }
690         mutex_unlock(&instance->poll_state_serialize);
691         mutex_unlock(&instance->adsl_state_serialize);
692
693         if (start_polling)
694                 cxacru_poll_status(&instance->poll_work.work);
695         return 0;
696
697 fail_sysfs:
698         usb_err(usbatm_instance, "cxacru_atm_start: device_create_file failed (%d)\n", ret);
699         cxacru_remove_device_files(usbatm_instance, atm_dev);
700         return ret;
701 }
702
703 static void cxacru_poll_status(struct work_struct *work)
704 {
705         struct cxacru_data *instance =
706                 container_of(work, struct cxacru_data, poll_work.work);
707         u32 buf[CXINF_MAX] = {};
708         struct usbatm_data *usbatm = instance->usbatm;
709         struct atm_dev *atm_dev = usbatm->atm_dev;
710         int keep_polling = 1;
711         int ret;
712
713         ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
714         if (ret < 0) {
715                 if (ret != -ESHUTDOWN)
716                         atm_warn(usbatm, "poll status: error %d\n", ret);
717
718                 mutex_lock(&instance->poll_state_serialize);
719                 if (instance->poll_state != CXPOLL_SHUTDOWN) {
720                         instance->poll_state = CXPOLL_STOPPED;
721
722                         if (ret != -ESHUTDOWN)
723                                 atm_warn(usbatm, "polling disabled, set adsl_state"
724                                                 " to 'start' or 'poll' to resume\n");
725                 }
726                 mutex_unlock(&instance->poll_state_serialize);
727                 goto reschedule;
728         }
729
730         memcpy(instance->card_info, buf, sizeof(instance->card_info));
731
732         if (instance->adsl_status != buf[CXINF_LINE_STARTABLE]) {
733                 instance->adsl_status = buf[CXINF_LINE_STARTABLE];
734
735                 switch (instance->adsl_status) {
736                 case 0:
737                         atm_printk(KERN_INFO, usbatm, "ADSL state: running\n");
738                         break;
739
740                 case 1:
741                         atm_printk(KERN_INFO, usbatm, "ADSL state: stopped\n");
742                         break;
743
744                 default:
745                         atm_printk(KERN_INFO, usbatm, "Unknown adsl status %02x\n", instance->adsl_status);
746                         break;
747                 }
748         }
749
750         if (instance->line_status == buf[CXINF_LINE_STATUS])
751                 goto reschedule;
752
753         instance->line_status = buf[CXINF_LINE_STATUS];
754         switch (instance->line_status) {
755         case 0:
756                 atm_dev->signal = ATM_PHY_SIG_LOST;
757                 atm_info(usbatm, "ADSL line: down\n");
758                 break;
759
760         case 1:
761                 atm_dev->signal = ATM_PHY_SIG_LOST;
762                 atm_info(usbatm, "ADSL line: attempting to activate\n");
763                 break;
764
765         case 2:
766                 atm_dev->signal = ATM_PHY_SIG_LOST;
767                 atm_info(usbatm, "ADSL line: training\n");
768                 break;
769
770         case 3:
771                 atm_dev->signal = ATM_PHY_SIG_LOST;
772                 atm_info(usbatm, "ADSL line: channel analysis\n");
773                 break;
774
775         case 4:
776                 atm_dev->signal = ATM_PHY_SIG_LOST;
777                 atm_info(usbatm, "ADSL line: exchange\n");
778                 break;
779
780         case 5:
781                 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
782                 atm_dev->signal = ATM_PHY_SIG_FOUND;
783
784                 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
785                      buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
786                 break;
787
788         case 6:
789                 atm_dev->signal = ATM_PHY_SIG_LOST;
790                 atm_info(usbatm, "ADSL line: waiting\n");
791                 break;
792
793         case 7:
794                 atm_dev->signal = ATM_PHY_SIG_LOST;
795                 atm_info(usbatm, "ADSL line: initializing\n");
796                 break;
797
798         default:
799                 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
800                 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
801                 break;
802         }
803 reschedule:
804
805         mutex_lock(&instance->poll_state_serialize);
806         if (instance->poll_state == CXPOLL_STOPPING &&
807                                 instance->adsl_status == 1 && /* stopped */
808                                 instance->line_status == 0) /* down */
809                 instance->poll_state = CXPOLL_STOPPED;
810
811         if (instance->poll_state == CXPOLL_STOPPED)
812                 keep_polling = 0;
813         mutex_unlock(&instance->poll_state_serialize);
814
815         if (keep_polling)
816                 schedule_delayed_work(&instance->poll_work,
817                                 round_jiffies_relative(POLL_INTERVAL*HZ));
818 }
819
820 static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
821                      u8 code1, u8 code2, u32 addr, const u8 *data, int size)
822 {
823         int ret;
824         u8 *buf;
825         int offd, offb;
826         const int stride = CMD_PACKET_SIZE - 8;
827
828         buf = (u8 *) __get_free_page(GFP_KERNEL);
829         if (!buf)
830                 return -ENOMEM;
831
832         offb = offd = 0;
833         do {
834                 int l = min_t(int, stride, size - offd);
835                 buf[offb++] = fw;
836                 buf[offb++] = l;
837                 buf[offb++] = code1;
838                 buf[offb++] = code2;
839                 put_unaligned(cpu_to_le32(addr), (__le32 *)(buf + offb));
840                 offb += 4;
841                 addr += l;
842                 if(l)
843                         memcpy(buf + offb, data + offd, l);
844                 if (l < stride)
845                         memset(buf + offb + l, 0, stride - l);
846                 offb += stride;
847                 offd += stride;
848                 if ((offb >= PAGE_SIZE) || (offd >= size)) {
849                         ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
850                                            buf, offb, NULL, CMD_TIMEOUT);
851                         if (ret < 0) {
852                                 dbg("sending fw %#x failed", fw);
853                                 goto cleanup;
854                         }
855                         offb = 0;
856                 }
857         } while(offd < size);
858         dbg("sent fw %#x", fw);
859
860         ret = 0;
861
862 cleanup:
863         free_page((unsigned long) buf);
864         return ret;
865 }
866
867 static void cxacru_upload_firmware(struct cxacru_data *instance,
868                                    const struct firmware *fw,
869                                    const struct firmware *bp,
870                                    const struct firmware *cf)
871 {
872         int ret;
873         int off;
874         struct usbatm_data *usbatm = instance->usbatm;
875         struct usb_device *usb_dev = usbatm->usb_dev;
876         __le16 signature[] = { usb_dev->descriptor.idVendor,
877                                usb_dev->descriptor.idProduct };
878         __le32 val;
879
880         dbg("cxacru_upload_firmware");
881
882         /* FirmwarePllFClkValue */
883         val = cpu_to_le32(instance->modem_type->pll_f_clk);
884         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
885         if (ret) {
886                 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
887                 return;
888         }
889
890         /* FirmwarePllBClkValue */
891         val = cpu_to_le32(instance->modem_type->pll_b_clk);
892         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
893         if (ret) {
894                 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
895                 return;
896         }
897
898         /* Enable SDRAM */
899         val = cpu_to_le32(SDRAM_ENA);
900         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
901         if (ret) {
902                 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
903                 return;
904         }
905
906         /* Firmware */
907         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
908         if (ret) {
909                 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
910                 return;
911         }
912
913         /* Boot ROM patch */
914         if (instance->modem_type->boot_rom_patch) {
915                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
916                 if (ret) {
917                         usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
918                         return;
919                 }
920         }
921
922         /* Signature */
923         ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
924         if (ret) {
925                 usb_err(usbatm, "Signature storing failed: %d\n", ret);
926                 return;
927         }
928
929         if (instance->modem_type->boot_rom_patch) {
930                 val = cpu_to_le32(BR_ADDR);
931                 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
932         }
933         else {
934                 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
935         }
936         if (ret) {
937                 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
938                 return;
939         }
940
941         /* Delay to allow firmware to start up. */
942         msleep_interruptible(1000);
943
944         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
945         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
946         usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
947         usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
948
949         ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
950         if (ret < 0) {
951                 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
952                 return;
953         }
954
955         /* Load config data (le32), doing one packet at a time */
956         if (cf)
957                 for (off = 0; off < cf->size / 4; ) {
958                         __le32 buf[CMD_PACKET_SIZE / 4 - 1];
959                         int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
960                         buf[0] = cpu_to_le32(len);
961                         for (i = 0; i < len; i++, off++) {
962                                 buf[i * 2 + 1] = cpu_to_le32(off);
963                                 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
964                         }
965                         ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
966                                         (u8 *) buf, len, NULL, 0);
967                         if (ret < 0) {
968                                 usb_err(usbatm, "load config data failed: %d\n", ret);
969                                 return;
970                         }
971                 }
972
973         msleep_interruptible(4000);
974 }
975
976 static int cxacru_find_firmware(struct cxacru_data *instance,
977                                 char* phase, const struct firmware **fw_p)
978 {
979         struct usbatm_data *usbatm = instance->usbatm;
980         struct device *dev = &usbatm->usb_intf->dev;
981         char buf[16];
982
983         sprintf(buf, "cxacru-%s.bin", phase);
984         dbg("cxacru_find_firmware: looking for %s", buf);
985
986         if (request_firmware(fw_p, buf, dev)) {
987                 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
988                 return -ENOENT;
989         }
990
991         usb_info(usbatm, "found firmware %s\n", buf);
992
993         return 0;
994 }
995
996 static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
997                              struct usb_interface *usb_intf)
998 {
999         const struct firmware *fw, *bp, *cf;
1000         struct cxacru_data *instance = usbatm_instance->driver_data;
1001
1002         int ret = cxacru_find_firmware(instance, "fw", &fw);
1003         if (ret) {
1004                 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1005                 return ret;
1006         }
1007
1008         if (instance->modem_type->boot_rom_patch) {
1009                 ret = cxacru_find_firmware(instance, "bp", &bp);
1010                 if (ret) {
1011                         usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1012                         release_firmware(fw);
1013                         return ret;
1014                 }
1015         }
1016
1017         if (cxacru_find_firmware(instance, "cf", &cf))          /* optional */
1018                 cf = NULL;
1019
1020         cxacru_upload_firmware(instance, fw, bp, cf);
1021
1022         if (cf)
1023                 release_firmware(cf);
1024         if (instance->modem_type->boot_rom_patch)
1025                 release_firmware(bp);
1026         release_firmware(fw);
1027
1028         ret = cxacru_card_status(instance);
1029         if (ret)
1030                 dbg("modem initialisation failed");
1031         else
1032                 dbg("done setting up the modem");
1033
1034         return ret;
1035 }
1036
1037 static int cxacru_bind(struct usbatm_data *usbatm_instance,
1038                        struct usb_interface *intf, const struct usb_device_id *id)
1039 {
1040         struct cxacru_data *instance;
1041         struct usb_device *usb_dev = interface_to_usbdev(intf);
1042         int ret;
1043
1044         /* instance init */
1045         instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1046         if (!instance) {
1047                 dbg("cxacru_bind: no memory for instance data");
1048                 return -ENOMEM;
1049         }
1050
1051         instance->usbatm = usbatm_instance;
1052         instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
1053
1054         mutex_init(&instance->poll_state_serialize);
1055         instance->poll_state = CXPOLL_STOPPED;
1056         instance->line_status = -1;
1057         instance->adsl_status = -1;
1058
1059         mutex_init(&instance->adsl_state_serialize);
1060
1061         instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
1062         if (!instance->rcv_buf) {
1063                 dbg("cxacru_bind: no memory for rcv_buf");
1064                 ret = -ENOMEM;
1065                 goto fail;
1066         }
1067         instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
1068         if (!instance->snd_buf) {
1069                 dbg("cxacru_bind: no memory for snd_buf");
1070                 ret = -ENOMEM;
1071                 goto fail;
1072         }
1073         instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
1074         if (!instance->rcv_urb) {
1075                 dbg("cxacru_bind: no memory for rcv_urb");
1076                 ret = -ENOMEM;
1077                 goto fail;
1078         }
1079         instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
1080         if (!instance->snd_urb) {
1081                 dbg("cxacru_bind: no memory for snd_urb");
1082                 ret = -ENOMEM;
1083                 goto fail;
1084         }
1085
1086         usb_fill_int_urb(instance->rcv_urb,
1087                         usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
1088                         instance->rcv_buf, PAGE_SIZE,
1089                         cxacru_blocking_completion, &instance->rcv_done, 1);
1090
1091         usb_fill_int_urb(instance->snd_urb,
1092                         usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
1093                         instance->snd_buf, PAGE_SIZE,
1094                         cxacru_blocking_completion, &instance->snd_done, 4);
1095
1096         mutex_init(&instance->cm_serialize);
1097
1098         INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1099
1100         usbatm_instance->driver_data = instance;
1101
1102         usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1103
1104         return 0;
1105
1106  fail:
1107         free_page((unsigned long) instance->snd_buf);
1108         free_page((unsigned long) instance->rcv_buf);
1109         usb_free_urb(instance->snd_urb);
1110         usb_free_urb(instance->rcv_urb);
1111         kfree(instance);
1112
1113         return ret;
1114 }
1115
1116 static void cxacru_unbind(struct usbatm_data *usbatm_instance,
1117                 struct usb_interface *intf)
1118 {
1119         struct cxacru_data *instance = usbatm_instance->driver_data;
1120         int is_polling = 1;
1121
1122         dbg("cxacru_unbind entered");
1123
1124         if (!instance) {
1125                 dbg("cxacru_unbind: NULL instance!");
1126                 return;
1127         }
1128
1129         mutex_lock(&instance->poll_state_serialize);
1130         BUG_ON(instance->poll_state == CXPOLL_SHUTDOWN);
1131
1132         /* ensure that status polling continues unless
1133          * it has already stopped */
1134         if (instance->poll_state == CXPOLL_STOPPED)
1135                 is_polling = 0;
1136
1137         /* stop polling from being stopped or started */
1138         instance->poll_state = CXPOLL_SHUTDOWN;
1139         mutex_unlock(&instance->poll_state_serialize);
1140
1141         if (is_polling)
1142                 cancel_rearming_delayed_work(&instance->poll_work);
1143
1144         usb_kill_urb(instance->snd_urb);
1145         usb_kill_urb(instance->rcv_urb);
1146         usb_free_urb(instance->snd_urb);
1147         usb_free_urb(instance->rcv_urb);
1148
1149         free_page((unsigned long) instance->snd_buf);
1150         free_page((unsigned long) instance->rcv_buf);
1151
1152         kfree(instance);
1153
1154         usbatm_instance->driver_data = NULL;
1155 }
1156
1157 static const struct cxacru_modem_type cxacru_cafe = {
1158         .pll_f_clk = 0x02d874df,
1159         .pll_b_clk = 0x0196a51a,
1160         .boot_rom_patch = 1,
1161 };
1162
1163 static const struct cxacru_modem_type cxacru_cb00 = {
1164         .pll_f_clk = 0x5,
1165         .pll_b_clk = 0x3,
1166         .boot_rom_patch = 0,
1167 };
1168
1169 static const struct usb_device_id cxacru_usb_ids[] = {
1170         { /* V = Conexant                       P = ADSL modem (Euphrates project)      */
1171                 USB_DEVICE(0x0572, 0xcafe),     .driver_info = (unsigned long) &cxacru_cafe
1172         },
1173         { /* V = Conexant                       P = ADSL modem (Hasbani project)        */
1174                 USB_DEVICE(0x0572, 0xcb00),     .driver_info = (unsigned long) &cxacru_cb00
1175         },
1176         { /* V = Conexant                       P = ADSL modem                          */
1177                 USB_DEVICE(0x0572, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
1178         },
1179         { /* V = Conexant                       P = ADSL modem (Well PTI-800) */
1180                 USB_DEVICE(0x0572, 0xcb02),     .driver_info = (unsigned long) &cxacru_cb00
1181         },
1182         { /* V = Conexant                       P = ADSL modem                          */
1183                 USB_DEVICE(0x0572, 0xcb06),     .driver_info = (unsigned long) &cxacru_cb00
1184         },
1185         { /* V = Conexant                       P = ADSL modem (ZTE ZXDSL 852)          */
1186                 USB_DEVICE(0x0572, 0xcb07),     .driver_info = (unsigned long) &cxacru_cb00
1187         },
1188         { /* V = Olitec                         P = ADSL modem version 2                */
1189                 USB_DEVICE(0x08e3, 0x0100),     .driver_info = (unsigned long) &cxacru_cafe
1190         },
1191         { /* V = Olitec                         P = ADSL modem version 3                */
1192                 USB_DEVICE(0x08e3, 0x0102),     .driver_info = (unsigned long) &cxacru_cb00
1193         },
1194         { /* V = Trust/Amigo Technology Co.     P = AMX-CA86U                           */
1195                 USB_DEVICE(0x0eb0, 0x3457),     .driver_info = (unsigned long) &cxacru_cafe
1196         },
1197         { /* V = Zoom                           P = 5510                                */
1198                 USB_DEVICE(0x1803, 0x5510),     .driver_info = (unsigned long) &cxacru_cb00
1199         },
1200         { /* V = Draytek                        P = Vigor 318                           */
1201                 USB_DEVICE(0x0675, 0x0200),     .driver_info = (unsigned long) &cxacru_cb00
1202         },
1203         { /* V = Zyxel                          P = 630-C1 aka OMNI ADSL USB (Annex A)  */
1204                 USB_DEVICE(0x0586, 0x330a),     .driver_info = (unsigned long) &cxacru_cb00
1205         },
1206         { /* V = Zyxel                          P = 630-C3 aka OMNI ADSL USB (Annex B)  */
1207                 USB_DEVICE(0x0586, 0x330b),     .driver_info = (unsigned long) &cxacru_cb00
1208         },
1209         { /* V = Aethra                         P = Starmodem UM1020                    */
1210                 USB_DEVICE(0x0659, 0x0020),     .driver_info = (unsigned long) &cxacru_cb00
1211         },
1212         { /* V = Aztech Systems                 P = ? AKA Pirelli AUA-010               */
1213                 USB_DEVICE(0x0509, 0x0812),     .driver_info = (unsigned long) &cxacru_cb00
1214         },
1215         { /* V = Netopia                        P = Cayman 3341(Annex A)/3351(Annex B)  */
1216                 USB_DEVICE(0x100d, 0xcb01),     .driver_info = (unsigned long) &cxacru_cb00
1217         },
1218         { /* V = Netopia                        P = Cayman 3342(Annex A)/3352(Annex B)  */
1219                 USB_DEVICE(0x100d, 0x3342),     .driver_info = (unsigned long) &cxacru_cb00
1220         },
1221         {}
1222 };
1223
1224 MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
1225
1226 static struct usbatm_driver cxacru_driver = {
1227         .driver_name    = cxacru_driver_name,
1228         .bind           = cxacru_bind,
1229         .heavy_init     = cxacru_heavy_init,
1230         .unbind         = cxacru_unbind,
1231         .atm_start      = cxacru_atm_start,
1232         .atm_stop       = cxacru_remove_device_files,
1233         .bulk_in        = CXACRU_EP_DATA,
1234         .bulk_out       = CXACRU_EP_DATA,
1235         .rx_padding     = 3,
1236         .tx_padding     = 11,
1237 };
1238
1239 static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
1240 {
1241         return usbatm_usb_probe(intf, id, &cxacru_driver);
1242 }
1243
1244 static struct usb_driver cxacru_usb_driver = {
1245         .name           = cxacru_driver_name,
1246         .probe          = cxacru_usb_probe,
1247         .disconnect     = usbatm_usb_disconnect,
1248         .id_table       = cxacru_usb_ids
1249 };
1250
1251 static int __init cxacru_init(void)
1252 {
1253         return usb_register(&cxacru_usb_driver);
1254 }
1255
1256 static void __exit cxacru_cleanup(void)
1257 {
1258         usb_deregister(&cxacru_usb_driver);
1259 }
1260
1261 module_init(cxacru_init);
1262 module_exit(cxacru_cleanup);
1263
1264 MODULE_AUTHOR(DRIVER_AUTHOR);
1265 MODULE_DESCRIPTION(DRIVER_DESC);
1266 MODULE_LICENSE("GPL");
1267 MODULE_VERSION(DRIVER_VERSION);