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