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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> | |
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 Kib/s down | %d Kib/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 | instance->rcv_urb->transfer_flags |= URB_ASYNC_UNLINK; | |
719 | ||
720 | usb_fill_int_urb(instance->snd_urb, | |
721 | usb_dev, usb_sndintpipe(usb_dev, CXACRU_EP_CMD), | |
722 | instance->snd_buf, PAGE_SIZE, | |
723 | cxacru_blocking_completion, &instance->snd_done, 4); | |
724 | instance->snd_urb->transfer_flags |= URB_ASYNC_UNLINK; | |
725 | ||
726 | init_MUTEX(&instance->cm_serialize); | |
727 | ||
728 | INIT_WORK(&instance->poll_work, (void *)cxacru_poll_status, instance); | |
729 | ||
730 | usbatm_instance->driver_data = instance; | |
731 | ||
732 | *need_heavy_init = cxacru_card_status(instance); | |
733 | ||
734 | return 0; | |
735 | ||
736 | fail: | |
737 | free_page((unsigned long) instance->snd_buf); | |
738 | free_page((unsigned long) instance->rcv_buf); | |
739 | usb_free_urb(instance->snd_urb); | |
740 | usb_free_urb(instance->rcv_urb); | |
741 | kfree(instance); | |
742 | ||
743 | return ret; | |
744 | } | |
745 | ||
746 | static void cxacru_unbind(struct usbatm_data *usbatm_instance, | |
747 | struct usb_interface *intf) | |
748 | { | |
749 | struct cxacru_data *instance = usbatm_instance->driver_data; | |
750 | ||
751 | dbg("cxacru_unbind entered"); | |
752 | ||
753 | if (!instance) { | |
754 | dbg("cxacru_unbind: NULL instance!"); | |
755 | return; | |
756 | } | |
757 | ||
758 | while (!cancel_delayed_work(&instance->poll_work)) | |
759 | flush_scheduled_work(); | |
760 | ||
761 | usb_kill_urb(instance->snd_urb); | |
762 | usb_kill_urb(instance->rcv_urb); | |
763 | usb_free_urb(instance->snd_urb); | |
764 | usb_free_urb(instance->rcv_urb); | |
765 | ||
766 | free_page((unsigned long) instance->snd_buf); | |
767 | free_page((unsigned long) instance->rcv_buf); | |
768 | kfree(instance); | |
769 | ||
770 | usbatm_instance->driver_data = NULL; | |
771 | } | |
772 | ||
773 | static const struct cxacru_modem_type cxacru_cafe = { | |
774 | .pll_f_clk = 0x02d874df, | |
775 | .pll_b_clk = 0x0196a51a, | |
776 | .boot_rom_patch = 1, | |
777 | }; | |
778 | ||
779 | static const struct cxacru_modem_type cxacru_cb00 = { | |
780 | .pll_f_clk = 0x5, | |
781 | .pll_b_clk = 0x3, | |
782 | .boot_rom_patch = 0, | |
783 | }; | |
784 | ||
785 | static const struct usb_device_id cxacru_usb_ids[] = { | |
786 | { /* V = Conexant P = ADSL modem (Euphrates project) */ | |
787 | USB_DEVICE(0x0572, 0xcafe), .driver_info = (unsigned long) &cxacru_cafe | |
788 | }, | |
789 | { /* V = Conexant P = ADSL modem (Hasbani project) */ | |
790 | USB_DEVICE(0x0572, 0xcb00), .driver_info = (unsigned long) &cxacru_cb00 | |
791 | }, | |
792 | { /* V = Conexant P = ADSL modem */ | |
793 | USB_DEVICE(0x0572, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 | |
794 | }, | |
795 | { /* V = Conexant P = ADSL modem */ | |
796 | USB_DEVICE(0x0572, 0xcb06), .driver_info = (unsigned long) &cxacru_cb00 | |
797 | }, | |
798 | { /* V = Olitec P = ADSL modem version 2 */ | |
799 | USB_DEVICE(0x08e3, 0x0100), .driver_info = (unsigned long) &cxacru_cafe | |
800 | }, | |
801 | { /* V = Olitec P = ADSL modem version 3 */ | |
802 | USB_DEVICE(0x08e3, 0x0102), .driver_info = (unsigned long) &cxacru_cb00 | |
803 | }, | |
804 | { /* V = Trust/Amigo Technology Co. P = AMX-CA86U */ | |
805 | USB_DEVICE(0x0eb0, 0x3457), .driver_info = (unsigned long) &cxacru_cafe | |
806 | }, | |
807 | { /* V = Zoom P = 5510 */ | |
808 | USB_DEVICE(0x1803, 0x5510), .driver_info = (unsigned long) &cxacru_cb00 | |
809 | }, | |
810 | { /* V = Draytek P = Vigor 318 */ | |
811 | USB_DEVICE(0x0675, 0x0200), .driver_info = (unsigned long) &cxacru_cb00 | |
812 | }, | |
813 | { /* V = Zyxel P = 630-C1 aka OMNI ADSL USB (Annex A) */ | |
814 | USB_DEVICE(0x0586, 0x330a), .driver_info = (unsigned long) &cxacru_cb00 | |
815 | }, | |
816 | { /* V = Zyxel P = 630-C3 aka OMNI ADSL USB (Annex B) */ | |
817 | USB_DEVICE(0x0586, 0x330b), .driver_info = (unsigned long) &cxacru_cb00 | |
818 | }, | |
819 | { /* V = Aethra P = Starmodem UM1020 */ | |
820 | USB_DEVICE(0x0659, 0x0020), .driver_info = (unsigned long) &cxacru_cb00 | |
821 | }, | |
822 | { /* V = Aztech Systems P = ? AKA Pirelli AUA-010 */ | |
823 | USB_DEVICE(0x0509, 0x0812), .driver_info = (unsigned long) &cxacru_cb00 | |
824 | }, | |
825 | { /* V = Netopia P = Cayman 3341(Annex A)/3351(Annex B) */ | |
826 | USB_DEVICE(0x100d, 0xcb01), .driver_info = (unsigned long) &cxacru_cb00 | |
827 | }, | |
828 | { /* V = Netopia P = Cayman 3342(Annex A)/3352(Annex B) */ | |
829 | USB_DEVICE(0x100d, 0x3342), .driver_info = (unsigned long) &cxacru_cb00 | |
830 | }, | |
831 | {} | |
832 | }; | |
833 | ||
834 | MODULE_DEVICE_TABLE(usb, cxacru_usb_ids); | |
835 | ||
836 | static struct usbatm_driver cxacru_driver = { | |
837 | .owner = THIS_MODULE, | |
838 | .driver_name = cxacru_driver_name, | |
839 | .bind = cxacru_bind, | |
840 | .heavy_init = cxacru_heavy_init, | |
841 | .unbind = cxacru_unbind, | |
842 | .atm_start = cxacru_atm_start, | |
843 | .in = CXACRU_EP_DATA, | |
844 | .out = CXACRU_EP_DATA, | |
845 | .rx_padding = 3, | |
846 | .tx_padding = 11, | |
847 | }; | |
848 | ||
849 | static int cxacru_usb_probe(struct usb_interface *intf, const struct usb_device_id *id) | |
850 | { | |
851 | return usbatm_usb_probe(intf, id, &cxacru_driver); | |
852 | } | |
853 | ||
854 | static struct usb_driver cxacru_usb_driver = { | |
855 | .owner = THIS_MODULE, | |
856 | .name = cxacru_driver_name, | |
857 | .probe = cxacru_usb_probe, | |
858 | .disconnect = usbatm_usb_disconnect, | |
859 | .id_table = cxacru_usb_ids | |
860 | }; | |
861 | ||
862 | static int __init cxacru_init(void) | |
863 | { | |
864 | return usb_register(&cxacru_usb_driver); | |
865 | } | |
866 | ||
867 | static void __exit cxacru_cleanup(void) | |
868 | { | |
869 | usb_deregister(&cxacru_usb_driver); | |
870 | } | |
871 | ||
872 | module_init(cxacru_init); | |
873 | module_exit(cxacru_cleanup); | |
874 | ||
875 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
876 | MODULE_DESCRIPTION(DRIVER_DESC); | |
877 | MODULE_LICENSE("GPL"); | |
878 | MODULE_VERSION(DRIVER_VERSION); |