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[deliverable/linux.git] / drivers / usb / atm / cxacru.c
CommitLineData
1b0e6146
DS		 1/******************************************************************************
2 * cxacru.c - driver for USB ADSL modems based on
3 * Conexant AccessRunner chipset
4 *
5 * Copyright (C) 2004 David Woodhouse, Duncan Sands, Roman Kagan
6 * Copyright (C) 2005 Duncan Sands, Roman Kagan (rkagan % mail ! ru)
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the Free
10 * Software Foundation; either version 2 of the License, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful, but WITHOUT
14 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * more details.
17 *
18 * You should have received a copy of the GNU General Public License along with
19 * this program; if not, write to the Free Software Foundation, Inc., 59
20 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 *
22 ******************************************************************************/
23
24/*
25 * Credit is due for Josep Comas, who created the original patch to speedtch.c
26 * to support the different padding used by the AccessRunner (now generalized
27 * into usbatm), and the userspace firmware loading utility.
28 */
29
30#include <linux/module.h>
31#include <linux/moduleparam.h>
32#include <linux/kernel.h>
33#include <linux/timer.h>
34#include <linux/errno.h>
35#include <linux/slab.h>
36#include <linux/init.h>
37#include <linux/device.h> /* FIXME: linux/firmware.h should include it itself */
38#include <linux/firmware.h>
ab3c81ff 39#include <linux/mutex.h>
1b0e6146
DS		 40
41#include "usbatm.h"
42
43#define DRIVER_AUTHOR "Roman Kagan, David Woodhouse, Duncan Sands"
44#define DRIVER_VERSION "0.2"
45#define DRIVER_DESC "Conexant AccessRunner ADSL USB modem driver"
46
47static const char cxacru_driver_name[] = "cxacru";
48
49#define CXACRU_EP_CMD 0x01 /* Bulk/interrupt in/out */
50#define CXACRU_EP_DATA 0x02 /* Bulk in/out */
51
52#define CMD_PACKET_SIZE 64 /* Should be maxpacket(ep)? */
53
54/* Addresses */
55#define PLLFCLK_ADDR 0x00350068
56#define PLLBCLK_ADDR 0x0035006c
57#define SDRAMEN_ADDR 0x00350010
58#define FW_ADDR 0x00801000
59#define BR_ADDR 0x00180600
60#define SIG_ADDR 0x00180500
61#define BR_STACK_ADDR 0x00187f10
62
63/* Values */
64#define SDRAM_ENA 0x1
65
66#define CMD_TIMEOUT 2000 /* msecs */
67#define POLL_INTERVAL 5000 /* msecs */
68
69/* commands for interaction with the modem through the control channel before
70 * firmware is loaded */
71enum cxacru_fw_request {
72 FW_CMD_ERR,
73 FW_GET_VER,
74 FW_READ_MEM,
75 FW_WRITE_MEM,
76 FW_RMW_MEM,
77 FW_CHECKSUM_MEM,
78 FW_GOTO_MEM,
79};
80
81/* commands for interaction with the modem through the control channel once
82 * firmware is loaded */
83enum cxacru_cm_request {
84 CM_REQUEST_UNDEFINED = 0x80,
85 CM_REQUEST_TEST,
86 CM_REQUEST_CHIP_GET_MAC_ADDRESS,
87 CM_REQUEST_CHIP_GET_DP_VERSIONS,
88 CM_REQUEST_CHIP_ADSL_LINE_START,
89 CM_REQUEST_CHIP_ADSL_LINE_STOP,
90 CM_REQUEST_CHIP_ADSL_LINE_GET_STATUS,
91 CM_REQUEST_CHIP_ADSL_LINE_GET_SPEED,
92 CM_REQUEST_CARD_INFO_GET,
93 CM_REQUEST_CARD_DATA_GET,
94 CM_REQUEST_CARD_DATA_SET,
95 CM_REQUEST_COMMAND_HW_IO,
96 CM_REQUEST_INTERFACE_HW_IO,
97 CM_REQUEST_CARD_SERIAL_DATA_PATH_GET,
98 CM_REQUEST_CARD_SERIAL_DATA_PATH_SET,
99 CM_REQUEST_CARD_CONTROLLER_VERSION_GET,
100 CM_REQUEST_CARD_GET_STATUS,
101 CM_REQUEST_CARD_GET_MAC_ADDRESS,
102 CM_REQUEST_CARD_GET_DATA_LINK_STATUS,
103 CM_REQUEST_MAX,
104};
105
106/* reply codes to the commands above */
107enum cxacru_cm_status {
108 CM_STATUS_UNDEFINED,
109 CM_STATUS_SUCCESS,
110 CM_STATUS_ERROR,
111 CM_STATUS_UNSUPPORTED,
112 CM_STATUS_UNIMPLEMENTED,
113 CM_STATUS_PARAMETER_ERROR,
114 CM_STATUS_DBG_LOOPBACK,
115 CM_STATUS_MAX,
116};
117
118/* indices into CARD_INFO_GET return array */
119enum cxacru_info_idx {
120 CXINF_DOWNSTREAM_RATE,
121 CXINF_UPSTREAM_RATE,
122 CXINF_LINK_STATUS,
123 CXINF_LINE_STATUS,
124 CXINF_MAC_ADDRESS_HIGH,
125 CXINF_MAC_ADDRESS_LOW,
126 CXINF_UPSTREAM_SNR_MARGIN,
127 CXINF_DOWNSTREAM_SNR_MARGIN,
128 CXINF_UPSTREAM_ATTENUATION,
129 CXINF_DOWNSTREAM_ATTENUATION,
130 CXINF_TRANSMITTER_POWER,
131 CXINF_UPSTREAM_BITS_PER_FRAME,
132 CXINF_DOWNSTREAM_BITS_PER_FRAME,
133 CXINF_STARTUP_ATTEMPTS,
134 CXINF_UPSTREAM_CRC_ERRORS,
135 CXINF_DOWNSTREAM_CRC_ERRORS,
136 CXINF_UPSTREAM_FEC_ERRORS,
137 CXINF_DOWNSTREAM_FEC_ERRORS,
138 CXINF_UPSTREAM_HEC_ERRORS,
139 CXINF_DOWNSTREAM_HEC_ERRORS,
140 CXINF_LINE_STARTABLE,
141 CXINF_MODULATION,
142 CXINF_ADSL_HEADEND,
143 CXINF_ADSL_HEADEND_ENVIRONMENT,
144 CXINF_CONTROLLER_VERSION,
145 /* dunno what the missing two mean */
146 CXINF_MAX = 0x1c,
147};
148
149struct cxacru_modem_type {
150 u32 pll_f_clk;
151 u32 pll_b_clk;
152 int boot_rom_patch;
153};
154
155struct cxacru_data {
156 struct usbatm_data *usbatm;
157
158 const struct cxacru_modem_type *modem_type;
159
160 int line_status;
c4028958 161 struct delayed_work poll_work;
1b0e6146
DS		 162
163 /* contol handles */
ab3c81ff 164 struct mutex cm_serialize;
1b0e6146
DS		 165 u8 *rcv_buf;
166 u8 *snd_buf;
167 struct urb *rcv_urb;
168 struct urb *snd_urb;
169 struct completion rcv_done;
170 struct completion snd_done;
171};
172
173/* the following three functions are stolen from drivers/usb/core/message.c */
7d12e780 174static void cxacru_blocking_completion(struct urb *urb)
1b0e6146
DS		 175{
176 complete((struct completion *)urb->context);
177}
178
179static void cxacru_timeout_kill(unsigned long data)
180{
181 usb_unlink_urb((struct urb *) data);
182}
183
184static int cxacru_start_wait_urb(struct urb *urb, struct completion *done,
185 int* actual_length)
186{
187 struct timer_list timer;
188 int status;
189
190 init_timer(&timer);
191 timer.expires = jiffies + msecs_to_jiffies(CMD_TIMEOUT);
192 timer.data = (unsigned long) urb;
193 timer.function = cxacru_timeout_kill;
194 add_timer(&timer);
195 wait_for_completion(done);
196 status = urb->status;
197 if (status == -ECONNRESET)
198 status = -ETIMEDOUT;
199 del_timer_sync(&timer);
200
201 if (actual_length)
202 *actual_length = urb->actual_length;
203 return status;
204}
205
206static int cxacru_cm(struct cxacru_data *instance, enum cxacru_cm_request cm,
207 u8 *wdata, int wsize, u8 *rdata, int rsize)
208{
209 int ret, actlen;
210 int offb, offd;
211 const int stride = CMD_PACKET_SIZE - 4;
212 u8 *wbuf = instance->snd_buf;
213 u8 *rbuf = instance->rcv_buf;
214 int wbuflen = ((wsize - 1) / stride + 1) * CMD_PACKET_SIZE;
215 int rbuflen = ((rsize - 1) / stride + 1) * CMD_PACKET_SIZE;
216
217 if (wbuflen > PAGE_SIZE || rbuflen > PAGE_SIZE) {
218 dbg("too big transfer requested");
219 ret = -ENOMEM;
220 goto fail;
221 }
222
ab3c81ff 223 mutex_lock(&instance->cm_serialize);
1b0e6146
DS		 224
225 /* submit reading urb before the writing one */
226 init_completion(&instance->rcv_done);
227 ret = usb_submit_urb(instance->rcv_urb, GFP_KERNEL);
228 if (ret < 0) {
229 dbg("submitting read urb for cm %#x failed", cm);
230 ret = ret;
231 goto fail;
232 }
233
234 memset(wbuf, 0, wbuflen);
235 /* handle wsize == 0 */
236 wbuf[0] = cm;
237 for (offb = offd = 0; offd < wsize; offd += stride, offb += CMD_PACKET_SIZE) {
238 wbuf[offb] = cm;
239 memcpy(wbuf + offb + 4, wdata + offd, min_t(int, stride, wsize - offd));
240 }
241
242 instance->snd_urb->transfer_buffer_length = wbuflen;
243 init_completion(&instance->snd_done);
244 ret = usb_submit_urb(instance->snd_urb, GFP_KERNEL);
245 if (ret < 0) {
246 dbg("submitting write urb for cm %#x failed", cm);
247 ret = ret;
248 goto fail;
249 }
250
251 ret = cxacru_start_wait_urb(instance->snd_urb, &instance->snd_done, NULL);
252 if (ret < 0) {
253 dbg("sending cm %#x failed", cm);
254 ret = ret;
255 goto fail;
256 }
257
258 ret = cxacru_start_wait_urb(instance->rcv_urb, &instance->rcv_done, &actlen);
259 if (ret < 0) {
260 dbg("receiving cm %#x failed", cm);
261 ret = ret;
262 goto fail;
263 }
264 if (actlen % CMD_PACKET_SIZE || !actlen) {
265 dbg("response is not a positive multiple of %d: %#x",
266 CMD_PACKET_SIZE, actlen);
267 ret = -EIO;
268 goto fail;
269 }
270
271 /* check the return status and copy the data to the output buffer, if needed */
272 for (offb = offd = 0; offd < rsize && offb < actlen; offb += CMD_PACKET_SIZE) {
273 if (rbuf[offb] != cm) {
274 dbg("wrong cm %#x in response", rbuf[offb]);
275 ret = -EIO;
276 goto fail;
277 }
278 if (rbuf[offb + 1] != CM_STATUS_SUCCESS) {
279 dbg("response failed: %#x", rbuf[offb + 1]);
280 ret = -EIO;
281 goto fail;
282 }
283 if (offd >= rsize)
284 break;
285 memcpy(rdata + offd, rbuf + offb + 4, min_t(int, stride, rsize - offd));
286 offd += stride;
287 }
288
289 ret = offd;
290 dbg("cm %#x", cm);
291fail:
ab3c81ff 292 mutex_unlock(&instance->cm_serialize);
1b0e6146
DS		 293 return ret;
294}
295
296static int cxacru_cm_get_array(struct cxacru_data *instance, enum cxacru_cm_request cm,
297 u32 *data, int size)
298{
299 int ret, len;
300 u32 *buf;
301 int offb, offd;
302 const int stride = CMD_PACKET_SIZE / (4 * 2) - 1;
303 int buflen = ((size - 1) / stride + 1 + size * 2) * 4;
304
305 buf = kmalloc(buflen, GFP_KERNEL);
306 if (!buf)
307 return -ENOMEM;
308
309 ret = cxacru_cm(instance, cm, NULL, 0, (u8 *) buf, buflen);
310 if (ret < 0)
311 goto cleanup;
312
313 /* len > 0 && len % 4 == 0 guaranteed by cxacru_cm() */
314 len = ret / 4;
315 for (offb = 0; offb < len; ) {
316 int l = le32_to_cpu(buf[offb++]);
317 if (l > stride || l > (len - offb) / 2) {
318 dbg("wrong data length %#x in response", l);
319 ret = -EIO;
320 goto cleanup;
321 }
322 while (l--) {
323 offd = le32_to_cpu(buf[offb++]);
324 if (offd >= size) {
325 dbg("wrong index %#x in response", offd);
326 ret = -EIO;
327 goto cleanup;
328 }
329 data[offd] = le32_to_cpu(buf[offb++]);
330 }
331 }
332
333 ret = 0;
334
335cleanup:
336 kfree(buf);
337 return ret;
338}
339
340static int cxacru_card_status(struct cxacru_data *instance)
341{
342 int ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
343 if (ret < 0) { /* firmware not loaded */
344 dbg("cxacru_adsl_start: CARD_GET_STATUS returned %d", ret);
345 return ret;
346 }
347 return 0;
348}
349
c4028958 350static void cxacru_poll_status(struct work_struct *work);
1b0e6146
DS		 351
352static int cxacru_atm_start(struct usbatm_data *usbatm_instance,
353 struct atm_dev *atm_dev)
354{
355 struct cxacru_data *instance = usbatm_instance->driver_data;
1b0e6146
DS		 356 /*
357 struct atm_dev *atm_dev = usbatm_instance->atm_dev;
358 */
359 int ret;
360
361 dbg("cxacru_atm_start");
362
363 /* Read MAC address */
364 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_MAC_ADDRESS, NULL, 0,
365 atm_dev->esi, sizeof(atm_dev->esi));
366 if (ret < 0) {
0ec3c7e8 367 atm_err(usbatm_instance, "cxacru_atm_start: CARD_GET_MAC_ADDRESS returned %d\n", ret);
1b0e6146
DS		 368 return ret;
369 }
370
371 /* start ADSL */
372 ret = cxacru_cm(instance, CM_REQUEST_CHIP_ADSL_LINE_START, NULL, 0, NULL, 0);
373 if (ret < 0) {
0ec3c7e8 374 atm_err(usbatm_instance, "cxacru_atm_start: CHIP_ADSL_LINE_START returned %d\n", ret);
1b0e6146
DS		 375 return ret;
376 }
377
378 /* Start status polling */
c4028958 379 cxacru_poll_status(&instance->poll_work.work);
1b0e6146
DS		 380 return 0;
381}
382
c4028958 383static void cxacru_poll_status(struct work_struct *work)
1b0e6146 384{
c4028958
DH		 385 struct cxacru_data *instance =
386 container_of(work, struct cxacru_data, poll_work.work);
1b0e6146 387 u32 buf[CXINF_MAX] = {};
0ec3c7e8
DS		 388 struct usbatm_data *usbatm = instance->usbatm;
389 struct atm_dev *atm_dev = usbatm->atm_dev;
1b0e6146
DS		 390 int ret;
391
392 ret = cxacru_cm_get_array(instance, CM_REQUEST_CARD_INFO_GET, buf, CXINF_MAX);
393 if (ret < 0) {
0ec3c7e8 394 atm_warn(usbatm, "poll status: error %d\n", ret);
1b0e6146
DS		 395 goto reschedule;
396 }
397
398 if (instance->line_status == buf[CXINF_LINE_STATUS])
399 goto reschedule;
400
401 instance->line_status = buf[CXINF_LINE_STATUS];
402 switch (instance->line_status) {
403 case 0:
404 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 405 atm_info(usbatm, "ADSL line: down\n");
1b0e6146
DS		 406 break;
407
408 case 1:
409 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 410 atm_info(usbatm, "ADSL line: attempting to activate\n");
1b0e6146
DS		 411 break;
412
413 case 2:
414 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 415 atm_info(usbatm, "ADSL line: training\n");
1b0e6146
DS		 416 break;
417
418 case 3:
419 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 420 atm_info(usbatm, "ADSL line: channel analysis\n");
1b0e6146
DS		 421 break;
422
423 case 4:
424 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 425 atm_info(usbatm, "ADSL line: exchange\n");
1b0e6146
DS		 426 break;
427
428 case 5:
429 atm_dev->link_rate = buf[CXINF_DOWNSTREAM_RATE] * 1000 / 424;
430 atm_dev->signal = ATM_PHY_SIG_FOUND;
431
0ec3c7e8 432 atm_info(usbatm, "ADSL line: up (%d kb/s down | %d kb/s up)\n",
1b0e6146
DS		 433 buf[CXINF_DOWNSTREAM_RATE], buf[CXINF_UPSTREAM_RATE]);
434 break;
435
436 case 6:
437 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 438 atm_info(usbatm, "ADSL line: waiting\n");
1b0e6146
DS		 439 break;
440
441 case 7:
442 atm_dev->signal = ATM_PHY_SIG_LOST;
0ec3c7e8 443 atm_info(usbatm, "ADSL line: initializing\n");
1b0e6146
DS		 444 break;
445
446 default:
447 atm_dev->signal = ATM_PHY_SIG_UNKNOWN;
0ec3c7e8 448 atm_info(usbatm, "Unknown line state %02x\n", instance->line_status);
1b0e6146
DS		 449 break;
450 }
451reschedule:
452 schedule_delayed_work(&instance->poll_work, msecs_to_jiffies(POLL_INTERVAL));
453}
454
455static int cxacru_fw(struct usb_device *usb_dev, enum cxacru_fw_request fw,
456 u8 code1, u8 code2, u32 addr, u8 *data, int size)
457{
458 int ret;
459 u8 *buf;
460 int offd, offb;
461 const int stride = CMD_PACKET_SIZE - 8;
462
463 buf = (u8 *) __get_free_page(GFP_KERNEL);
464 if (!buf)
465 return -ENOMEM;
466
467 offb = offd = 0;
468 do {
469 int l = min_t(int, stride, size - offd);
470 buf[offb++] = fw;
471 buf[offb++] = l;
472 buf[offb++] = code1;
473 buf[offb++] = code2;
474 *((u32 *) (buf + offb)) = cpu_to_le32(addr);
475 offb += 4;
476 addr += l;
477 if(l)
478 memcpy(buf + offb, data + offd, l);
479 if (l < stride)
480 memset(buf + offb + l, 0, stride - l);
481 offb += stride;
482 offd += stride;
483 if ((offb >= PAGE_SIZE) || (offd >= size)) {
484 ret = usb_bulk_msg(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD),
485 buf, offb, NULL, CMD_TIMEOUT);
486 if (ret < 0) {
487 dbg("sending fw %#x failed", fw);
488 goto cleanup;
489 }
490 offb = 0;
491 }
492 } while(offd < size);
493 dbg("sent fw %#x", fw);
494
495 ret = 0;
496
497cleanup:
498 free_page((unsigned long) buf);
499 return ret;
500}
501
502static void cxacru_upload_firmware(struct cxacru_data *instance,
503 const struct firmware *fw,
504 const struct firmware *bp,
505 const struct firmware *cf)
506{
507 int ret;
508 int off;
0ec3c7e8
DS		 509 struct usbatm_data *usbatm = instance->usbatm;
510 struct usb_device *usb_dev = usbatm->usb_dev;
1b0e6146
DS		 511 u16 signature[] = { usb_dev->descriptor.idVendor, usb_dev->descriptor.idProduct };
512 u32 val;
513
514 dbg("cxacru_upload_firmware");
515
516 /* FirmwarePllFClkValue */
517 val = cpu_to_le32(instance->modem_type->pll_f_clk);
518 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLFCLK_ADDR, (u8 *) &val, 4);
519 if (ret) {
0ec3c7e8 520 usb_err(usbatm, "FirmwarePllFClkValue failed: %d\n", ret);
1b0e6146
DS		 521 return;
522 }
523
524 /* FirmwarePllBClkValue */
525 val = cpu_to_le32(instance->modem_type->pll_b_clk);
526 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, PLLBCLK_ADDR, (u8 *) &val, 4);
527 if (ret) {
0ec3c7e8 528 usb_err(usbatm, "FirmwarePllBClkValue failed: %d\n", ret);
1b0e6146
DS		 529 return;
530 }
531
532 /* Enable SDRAM */
533 val = cpu_to_le32(SDRAM_ENA);
534 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SDRAMEN_ADDR, (u8 *) &val, 4);
535 if (ret) {
0ec3c7e8 536 usb_err(usbatm, "Enable SDRAM failed: %d\n", ret);
1b0e6146
DS		 537 return;
538 }
539
540 /* Firmware */
541 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, FW_ADDR, fw->data, fw->size);
542 if (ret) {
0ec3c7e8 543 usb_err(usbatm, "Firmware upload failed: %d\n", ret);
1b0e6146
DS		 544 return;
545 }
546
547 /* Boot ROM patch */
548 if (instance->modem_type->boot_rom_patch) {
549 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_ADDR, bp->data, bp->size);
550 if (ret) {
0ec3c7e8 551 usb_err(usbatm, "Boot ROM patching failed: %d\n", ret);
1b0e6146
DS		 552 return;
553 }
554 }
555
556 /* Signature */
557 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, SIG_ADDR, (u8 *) signature, 4);
558 if (ret) {
0ec3c7e8 559 usb_err(usbatm, "Signature storing failed: %d\n", ret);
1b0e6146
DS		 560 return;
561 }
562
563 if (instance->modem_type->boot_rom_patch) {
564 val = cpu_to_le32(BR_ADDR);
565 ret = cxacru_fw(usb_dev, FW_WRITE_MEM, 0x2, 0x0, BR_STACK_ADDR, (u8 *) &val, 4);
566 }
567 else {
568 ret = cxacru_fw(usb_dev, FW_GOTO_MEM, 0x0, 0x0, FW_ADDR, NULL, 0);
569 }
570 if (ret) {
0ec3c7e8 571 usb_err(usbatm, "Passing control to firmware failed: %d\n", ret);
1b0e6146
DS		 572 return;
573 }
574
575 /* Delay to allow firmware to start up. */
576 msleep_interruptible(1000);
577
578 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_CMD));
579 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_CMD));
580 usb_clear_halt(usb_dev, usb_sndbulkpipe(usb_dev, CXACRU_EP_DATA));
581 usb_clear_halt(usb_dev, usb_rcvbulkpipe(usb_dev, CXACRU_EP_DATA));
582
583 ret = cxacru_cm(instance, CM_REQUEST_CARD_GET_STATUS, NULL, 0, NULL, 0);
584 if (ret < 0) {
0ec3c7e8 585 usb_err(usbatm, "modem failed to initialize: %d\n", ret);
1b0e6146
DS		 586 return;
587 }
588
589 /* Load config data (le32), doing one packet at a time */
590 if (cf)
591 for (off = 0; off < cf->size / 4; ) {
592 u32 buf[CMD_PACKET_SIZE / 4 - 1];
593 int i, len = min_t(int, cf->size / 4 - off, CMD_PACKET_SIZE / 4 / 2 - 1);
594 buf[0] = cpu_to_le32(len);
595 for (i = 0; i < len; i++, off++) {
596 buf[i * 2 + 1] = cpu_to_le32(off);
597 memcpy(buf + i * 2 + 2, cf->data + off * 4, 4);
598 }
599 ret = cxacru_cm(instance, CM_REQUEST_CARD_DATA_SET,
600 (u8 *) buf, len, NULL, 0);
601 if (ret < 0) {
0ec3c7e8 602 usb_err(usbatm, "load config data failed: %d\n", ret);
1b0e6146
DS		 603 return;
604 }
605 }
606
607 msleep_interruptible(4000);
608}
609
610static int cxacru_find_firmware(struct cxacru_data *instance,
611 char* phase, const struct firmware **fw_p)
612{
0ec3c7e8
DS		 613 struct usbatm_data *usbatm = instance->usbatm;
614 struct device *dev = &usbatm->usb_intf->dev;
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DS		 615 char buf[16];
616
617 sprintf(buf, "cxacru-%s.bin", phase);
618 dbg("cxacru_find_firmware: looking for %s", buf);
619
620 if (request_firmware(fw_p, buf, dev)) {
0ec3c7e8 621 usb_dbg(usbatm, "no stage %s firmware found\n", phase);
1b0e6146
DS		 622 return -ENOENT;
623 }
624
0ec3c7e8 625 usb_info(usbatm, "found firmware %s\n", buf);
1b0e6146
DS		 626
627 return 0;
628}
629
630static int cxacru_heavy_init(struct usbatm_data *usbatm_instance,
631 struct usb_interface *usb_intf)
632{
1b0e6146
DS		 633 const struct firmware *fw, *bp, *cf;
634 struct cxacru_data *instance = usbatm_instance->driver_data;
635
636 int ret = cxacru_find_firmware(instance, "fw", &fw);
637 if (ret) {
0ec3c7e8 638 usb_warn(usbatm_instance, "firmware (cxacru-fw.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 639 return ret;
640 }
641
642 if (instance->modem_type->boot_rom_patch) {
643 ret = cxacru_find_firmware(instance, "bp", &bp);
644 if (ret) {
0ec3c7e8 645 usb_warn(usbatm_instance, "boot ROM patch (cxacru-bp.bin) unavailable (system misconfigured?)\n");
1b0e6146
DS		 646 release_firmware(fw);
647 return ret;
648 }
649 }
650
651 if (cxacru_find_firmware(instance, "cf", &cf)) /* optional */
652 cf = NULL;
653
654 cxacru_upload_firmware(instance, fw, bp, cf);
655
656 if (cf)
657 release_firmware(cf);
658 if (instance->modem_type->boot_rom_patch)
659 release_firmware(bp);
660 release_firmware(fw);
661
662 ret = cxacru_card_status(instance);
663 if (ret)
664 dbg("modem initialisation failed");
665 else
666 dbg("done setting up the modem");
667
668 return ret;
669}
670
671static int cxacru_bind(struct usbatm_data *usbatm_instance,
35644b0c 672 struct usb_interface *intf, const struct usb_device_id *id)
1b0e6146
DS		 673{
674 struct cxacru_data *instance;
675 struct usb_device *usb_dev = interface_to_usbdev(intf);
676 int ret;
677
678 /* instance init */
9a734efe 679 instance = kzalloc(sizeof(*instance), GFP_KERNEL);
1b0e6146
DS		 680 if (!instance) {
681 dbg("cxacru_bind: no memory for instance data");
682 return -ENOMEM;
683 }
684
1b0e6146
DS		 685 instance->usbatm = usbatm_instance;
686 instance->modem_type = (struct cxacru_modem_type *) id->driver_info;
687
688 instance->rcv_buf = (u8 *) __get_free_page(GFP_KERNEL);
689 if (!instance->rcv_buf) {
690 dbg("cxacru_bind: no memory for rcv_buf");
691 ret = -ENOMEM;
692 goto fail;
693 }
694 instance->snd_buf = (u8 *) __get_free_page(GFP_KERNEL);
695 if (!instance->snd_buf) {
696 dbg("cxacru_bind: no memory for snd_buf");
697 ret = -ENOMEM;
698 goto fail;
699 }
700 instance->rcv_urb = usb_alloc_urb(0, GFP_KERNEL);
701 if (!instance->rcv_urb) {
702 dbg("cxacru_bind: no memory for rcv_urb");
703 ret = -ENOMEM;
704 goto fail;
705 }
706 instance->snd_urb = usb_alloc_urb(0, GFP_KERNEL);
707 if (!instance->snd_urb) {
708 dbg("cxacru_bind: no memory for snd_urb");
709 ret = -ENOMEM;
710 goto fail;
711 }
712
713 usb_fill_int_urb(instance->rcv_urb,
714 usb_dev, usb_rcvintpipe(usb_dev, CXACRU_EP_CMD),
715 instance->rcv_buf, PAGE_SIZE,
716 cxacru_blocking_completion, &instance->rcv_done, 1);
1b0e6146
DS		 717
718 usb_fill_int_urb(instance->snd_urb,
719 usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD),
720 instance->snd_buf, PAGE_SIZE,
721 cxacru_blocking_completion, &instance->snd_done, 4);
1b0e6146 722
ab3c81ff 723 mutex_init(&instance->cm_serialize);
1b0e6146 724
c4028958 725 INIT_DELAYED_WORK(&instance->poll_work, cxacru_poll_status);
1b0e6146
DS		 726
727 usbatm_instance->driver_data = instance;
728
35644b0c 729 usbatm_instance->flags = (cxacru_card_status(instance) ? 0 : UDSL_SKIP_HEAVY_INIT);
1b0e6146
DS		 730
731 return 0;
732
733 fail:
734 free_page((unsigned long) instance->snd_buf);
735 free_page((unsigned long) instance->rcv_buf);
736 usb_free_urb(instance->snd_urb);
737 usb_free_urb(instance->rcv_urb);
738 kfree(instance);
739
740 return ret;
741}
742
743static void cxacru_unbind(struct usbatm_data *usbatm_instance,
744 struct usb_interface *intf)
745{
746 struct cxacru_data *instance = usbatm_instance->driver_data;
747
748 dbg("cxacru_unbind entered");
749
750 if (!instance) {
751 dbg("cxacru_unbind: NULL instance!");
752 return;
753 }
754
755 while (!cancel_delayed_work(&instance->poll_work))
756 flush_scheduled_work();
757
758 usb_kill_urb(instance->snd_urb);
759 usb_kill_urb(instance->rcv_urb);
760 usb_free_urb(instance->snd_urb);
761 usb_free_urb(instance->rcv_urb);
762
763 free_page((unsigned long) instance->snd_buf);
764 free_page((unsigned long) instance->rcv_buf);
765 kfree(instance);
766
767 usbatm_instance->driver_data = NULL;
768}
769
770static const struct cxacru_modem_type cxacru_cafe = {
771 .pll_f_clk = 0x02d874df,
772 .pll_b_clk = 0x0196a51a,
773 .boot_rom_patch = 1,
774};
775
776static const struct cxacru_modem_type cxacru_cb00 = {
777 .pll_f_clk = 0x5,
778 .pll_b_clk = 0x3,
779 .boot_rom_patch = 0,
780};
781
782static const struct usb_device_id cxacru_usb_ids[] = {
783 { /* V = Conexant P = ADSL modem (Euphrates project) */
784 USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe
785 },
786 { /* V = Conexant P = ADSL modem (Hasbani project) */
787 USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00
788 },
789 { /* V = Conexant P = ADSL modem */
790 USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
791 },
0ec3c7e8
DS		 792 { /* V = Conexant P = ADSL modem (Well PTI-800) */
793 USB_DEVICE(0x0572, 0xcb02), .driver_info = (unsigned long) &cxacru_cb00
794 },
1b0e6146
DS		 795 { /* V = Conexant P = ADSL modem */
796 USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00
797 },
44960af1
DS		 798 { /* V = Conexant P = ADSL modem (ZTE ZXDSL 852) */
799 USB_DEVICE(0x0572, 0xcb07), .driver_info = (unsigned long) &cxacru_cb00
800 },
1b0e6146
DS		 801 { /* V = Olitec P = ADSL modem version 2 */
802 USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe
803 },
804 { /* V = Olitec P = ADSL modem version 3 */
805 USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00
806 },
807 { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */
808 USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe
809 },
810 { /* V = Zoom P = 5510 */
811 USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00
812 },
813 { /* V = Draytek P = Vigor 318 */
814 USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00
815 },
816 { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */
817 USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00
818 },
819 { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */
820 USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00
821 },
822 { /* V = Aethra P = Starmodem UM1020 */
823 USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00
824 },
825 { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */
826 USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00
827 },
828 { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */
829 USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00
830 },
831 { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */
832 USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00
833 },
834 {}
835};
836
837MODULE_DEVICE_TABLE(usb, cxacru_usb_ids);
838
839static struct usbatm_driver cxacru_driver = {
1b0e6146
DS		 840 .driver_name = cxacru_driver_name,
841 .bind = cxacru_bind,
842 .heavy_init = cxacru_heavy_init,
843 .unbind = cxacru_unbind,
844 .atm_start = cxacru_atm_start,
80aae7a1
DS		 845 .bulk_in = CXACRU_EP_DATA,
846 .bulk_out = CXACRU_EP_DATA,
1b0e6146
DS		 847 .rx_padding = 3,
848 .tx_padding = 11,
849};
850
851static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id)
852{
853 return usbatm_usb_probe(intf, id, &cxacru_driver);
854}
855
856static struct usb_driver cxacru_usb_driver = {
1b0e6146
DS		 857 .name = cxacru_driver_name,
858 .probe = cxacru_usb_probe,
859 .disconnect = usbatm_usb_disconnect,
860 .id_table = cxacru_usb_ids
861};
862
863static int __init cxacru_init(void)
864{
865 return usb_register(&cxacru_usb_driver);
866}
867
868static void __exit cxacru_cleanup(void)
869{
870 usb_deregister(&cxacru_usb_driver);
871}
872
873module_init(cxacru_init);
874module_exit(cxacru_cleanup);
875
876MODULE_AUTHOR(DRIVER_AUTHOR);
877MODULE_DESCRIPTION(DRIVER_DESC);
878MODULE_LICENSE("GPL");
879MODULE_VERSION(DRIVER_VERSION);
Linux kernel - Deliverables
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