Root/
1 | /** |
2 | * Marvell BT-over-SDIO driver: SDIO interface related functions. |
3 | * |
4 | * Copyright (C) 2009, Marvell International Ltd. |
5 | * |
6 | * This software file (the "File") is distributed by Marvell International |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
8 | * (the "License"). You may use, redistribute and/or modify this File in |
9 | * accordance with the terms and conditions of the License, a copy of which |
10 | * is available by writing to the Free Software Foundation, Inc., |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
13 | * |
14 | * |
15 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
17 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
18 | * this warranty disclaimer. |
19 | **/ |
20 | |
21 | #include <linux/firmware.h> |
22 | #include <linux/slab.h> |
23 | |
24 | #include <linux/mmc/sdio_ids.h> |
25 | #include <linux/mmc/sdio_func.h> |
26 | #include <linux/module.h> |
27 | |
28 | #include <net/bluetooth/bluetooth.h> |
29 | #include <net/bluetooth/hci_core.h> |
30 | |
31 | #include "btmrvl_drv.h" |
32 | #include "btmrvl_sdio.h" |
33 | |
34 | #define VERSION "1.0" |
35 | |
36 | /* The btmrvl_sdio_remove() callback function is called |
37 | * when user removes this module from kernel space or ejects |
38 | * the card from the slot. The driver handles these 2 cases |
39 | * differently. |
40 | * If the user is removing the module, a MODULE_SHUTDOWN_REQ |
41 | * command is sent to firmware and interrupt will be disabled. |
42 | * If the card is removed, there is no need to send command |
43 | * or disable interrupt. |
44 | * |
45 | * The variable 'user_rmmod' is used to distinguish these two |
46 | * scenarios. This flag is initialized as FALSE in case the card |
47 | * is removed, and will be set to TRUE for module removal when |
48 | * module_exit function is called. |
49 | */ |
50 | static u8 user_rmmod; |
51 | static u8 sdio_ireg; |
52 | |
53 | static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = { |
54 | .cfg = 0x03, |
55 | .host_int_mask = 0x04, |
56 | .host_intstatus = 0x05, |
57 | .card_status = 0x20, |
58 | .sq_read_base_addr_a0 = 0x10, |
59 | .sq_read_base_addr_a1 = 0x11, |
60 | .card_fw_status0 = 0x40, |
61 | .card_fw_status1 = 0x41, |
62 | .card_rx_len = 0x42, |
63 | .card_rx_unit = 0x43, |
64 | .io_port_0 = 0x00, |
65 | .io_port_1 = 0x01, |
66 | .io_port_2 = 0x02, |
67 | }; |
68 | static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = { |
69 | .cfg = 0x00, |
70 | .host_int_mask = 0x02, |
71 | .host_intstatus = 0x03, |
72 | .card_status = 0x30, |
73 | .sq_read_base_addr_a0 = 0x40, |
74 | .sq_read_base_addr_a1 = 0x41, |
75 | .card_revision = 0x5c, |
76 | .card_fw_status0 = 0x60, |
77 | .card_fw_status1 = 0x61, |
78 | .card_rx_len = 0x62, |
79 | .card_rx_unit = 0x63, |
80 | .io_port_0 = 0x78, |
81 | .io_port_1 = 0x79, |
82 | .io_port_2 = 0x7a, |
83 | }; |
84 | |
85 | static const struct btmrvl_sdio_card_reg btmrvl_reg_88xx = { |
86 | .cfg = 0x00, |
87 | .host_int_mask = 0x02, |
88 | .host_intstatus = 0x03, |
89 | .card_status = 0x50, |
90 | .sq_read_base_addr_a0 = 0x60, |
91 | .sq_read_base_addr_a1 = 0x61, |
92 | .card_revision = 0xbc, |
93 | .card_fw_status0 = 0xc0, |
94 | .card_fw_status1 = 0xc1, |
95 | .card_rx_len = 0xc2, |
96 | .card_rx_unit = 0xc3, |
97 | .io_port_0 = 0xd8, |
98 | .io_port_1 = 0xd9, |
99 | .io_port_2 = 0xda, |
100 | }; |
101 | |
102 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { |
103 | .helper = "mrvl/sd8688_helper.bin", |
104 | .firmware = "mrvl/sd8688.bin", |
105 | .reg = &btmrvl_reg_8688, |
106 | .sd_blksz_fw_dl = 64, |
107 | }; |
108 | |
109 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { |
110 | .helper = NULL, |
111 | .firmware = "mrvl/sd8787_uapsta.bin", |
112 | .reg = &btmrvl_reg_87xx, |
113 | .sd_blksz_fw_dl = 256, |
114 | }; |
115 | |
116 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { |
117 | .helper = NULL, |
118 | .firmware = "mrvl/sd8797_uapsta.bin", |
119 | .reg = &btmrvl_reg_87xx, |
120 | .sd_blksz_fw_dl = 256, |
121 | }; |
122 | |
123 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = { |
124 | .helper = NULL, |
125 | .firmware = "mrvl/sd8897_uapsta.bin", |
126 | .reg = &btmrvl_reg_88xx, |
127 | .sd_blksz_fw_dl = 256, |
128 | }; |
129 | |
130 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
131 | /* Marvell SD8688 Bluetooth device */ |
132 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), |
133 | .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, |
134 | /* Marvell SD8787 Bluetooth device */ |
135 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), |
136 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, |
137 | /* Marvell SD8787 Bluetooth AMP device */ |
138 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B), |
139 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, |
140 | /* Marvell SD8797 Bluetooth device */ |
141 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), |
142 | .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, |
143 | /* Marvell SD8897 Bluetooth device */ |
144 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E), |
145 | .driver_data = (unsigned long) &btmrvl_sdio_sd8897 }, |
146 | |
147 | { } /* Terminating entry */ |
148 | }; |
149 | |
150 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
151 | |
152 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
153 | { |
154 | u8 reg; |
155 | int ret; |
156 | |
157 | reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); |
158 | if (!ret) |
159 | card->rx_unit = reg; |
160 | |
161 | return ret; |
162 | } |
163 | |
164 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) |
165 | { |
166 | u8 fws0, fws1; |
167 | int ret; |
168 | |
169 | *dat = 0; |
170 | |
171 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); |
172 | if (ret) |
173 | return -EIO; |
174 | |
175 | fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); |
176 | if (ret) |
177 | return -EIO; |
178 | |
179 | *dat = (((u16) fws1) << 8) | fws0; |
180 | |
181 | return 0; |
182 | } |
183 | |
184 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) |
185 | { |
186 | u8 reg; |
187 | int ret; |
188 | |
189 | reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); |
190 | if (!ret) |
191 | *dat = (u16) reg << card->rx_unit; |
192 | |
193 | return ret; |
194 | } |
195 | |
196 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, |
197 | u8 mask) |
198 | { |
199 | int ret; |
200 | |
201 | sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); |
202 | if (ret) { |
203 | BT_ERR("Unable to enable the host interrupt!"); |
204 | ret = -EIO; |
205 | } |
206 | |
207 | return ret; |
208 | } |
209 | |
210 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, |
211 | u8 mask) |
212 | { |
213 | u8 host_int_mask; |
214 | int ret; |
215 | |
216 | host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); |
217 | if (ret) |
218 | return -EIO; |
219 | |
220 | host_int_mask &= ~mask; |
221 | |
222 | sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); |
223 | if (ret < 0) { |
224 | BT_ERR("Unable to disable the host interrupt!"); |
225 | return -EIO; |
226 | } |
227 | |
228 | return 0; |
229 | } |
230 | |
231 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) |
232 | { |
233 | unsigned int tries; |
234 | u8 status; |
235 | int ret; |
236 | |
237 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { |
238 | status = sdio_readb(card->func, card->reg->card_status, &ret); |
239 | if (ret) |
240 | goto failed; |
241 | if ((status & bits) == bits) |
242 | return ret; |
243 | |
244 | udelay(1); |
245 | } |
246 | |
247 | ret = -ETIMEDOUT; |
248 | |
249 | failed: |
250 | BT_ERR("FAILED! ret=%d", ret); |
251 | |
252 | return ret; |
253 | } |
254 | |
255 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, |
256 | int pollnum) |
257 | { |
258 | u16 firmwarestat; |
259 | int tries, ret; |
260 | |
261 | /* Wait for firmware to become ready */ |
262 | for (tries = 0; tries < pollnum; tries++) { |
263 | sdio_claim_host(card->func); |
264 | ret = btmrvl_sdio_read_fw_status(card, &firmwarestat); |
265 | sdio_release_host(card->func); |
266 | if (ret < 0) |
267 | continue; |
268 | |
269 | if (firmwarestat == FIRMWARE_READY) |
270 | return 0; |
271 | |
272 | msleep(10); |
273 | } |
274 | |
275 | return -ETIMEDOUT; |
276 | } |
277 | |
278 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) |
279 | { |
280 | const struct firmware *fw_helper = NULL; |
281 | const u8 *helper = NULL; |
282 | int ret; |
283 | void *tmphlprbuf = NULL; |
284 | int tmphlprbufsz, hlprblknow, helperlen; |
285 | u8 *helperbuf; |
286 | u32 tx_len; |
287 | |
288 | ret = request_firmware(&fw_helper, card->helper, |
289 | &card->func->dev); |
290 | if ((ret < 0) || !fw_helper) { |
291 | BT_ERR("request_firmware(helper) failed, error code = %d", |
292 | ret); |
293 | ret = -ENOENT; |
294 | goto done; |
295 | } |
296 | |
297 | helper = fw_helper->data; |
298 | helperlen = fw_helper->size; |
299 | |
300 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", |
301 | helperlen, SDIO_BLOCK_SIZE); |
302 | |
303 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); |
304 | |
305 | tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); |
306 | if (!tmphlprbuf) { |
307 | BT_ERR("Unable to allocate buffer for helper." |
308 | " Terminating download"); |
309 | ret = -ENOMEM; |
310 | goto done; |
311 | } |
312 | |
313 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); |
314 | |
315 | /* Perform helper data transfer */ |
316 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) |
317 | - SDIO_HEADER_LEN; |
318 | hlprblknow = 0; |
319 | |
320 | do { |
321 | ret = btmrvl_sdio_poll_card_status(card, |
322 | CARD_IO_READY | DN_LD_CARD_RDY); |
323 | if (ret < 0) { |
324 | BT_ERR("Helper download poll status timeout @ %d", |
325 | hlprblknow); |
326 | goto done; |
327 | } |
328 | |
329 | /* Check if there is more data? */ |
330 | if (hlprblknow >= helperlen) |
331 | break; |
332 | |
333 | if (helperlen - hlprblknow < tx_len) |
334 | tx_len = helperlen - hlprblknow; |
335 | |
336 | /* Little-endian */ |
337 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); |
338 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); |
339 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); |
340 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); |
341 | |
342 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], |
343 | tx_len); |
344 | |
345 | /* Now send the data */ |
346 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
347 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); |
348 | if (ret < 0) { |
349 | BT_ERR("IO error during helper download @ %d", |
350 | hlprblknow); |
351 | goto done; |
352 | } |
353 | |
354 | hlprblknow += tx_len; |
355 | } while (true); |
356 | |
357 | BT_DBG("Transferring helper image EOF block"); |
358 | |
359 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); |
360 | |
361 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
362 | SDIO_BLOCK_SIZE); |
363 | if (ret < 0) { |
364 | BT_ERR("IO error in writing helper image EOF block"); |
365 | goto done; |
366 | } |
367 | |
368 | ret = 0; |
369 | |
370 | done: |
371 | kfree(tmphlprbuf); |
372 | release_firmware(fw_helper); |
373 | return ret; |
374 | } |
375 | |
376 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) |
377 | { |
378 | const struct firmware *fw_firmware = NULL; |
379 | const u8 *firmware = NULL; |
380 | int firmwarelen, tmpfwbufsz, ret; |
381 | unsigned int tries, offset; |
382 | u8 base0, base1; |
383 | void *tmpfwbuf = NULL; |
384 | u8 *fwbuf; |
385 | u16 len, blksz_dl = card->sd_blksz_fw_dl; |
386 | int txlen = 0, tx_blocks = 0, count = 0; |
387 | |
388 | ret = request_firmware(&fw_firmware, card->firmware, |
389 | &card->func->dev); |
390 | if ((ret < 0) || !fw_firmware) { |
391 | BT_ERR("request_firmware(firmware) failed, error code = %d", |
392 | ret); |
393 | ret = -ENOENT; |
394 | goto done; |
395 | } |
396 | |
397 | firmware = fw_firmware->data; |
398 | firmwarelen = fw_firmware->size; |
399 | |
400 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); |
401 | |
402 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); |
403 | tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); |
404 | if (!tmpfwbuf) { |
405 | BT_ERR("Unable to allocate buffer for firmware." |
406 | " Terminating download"); |
407 | ret = -ENOMEM; |
408 | goto done; |
409 | } |
410 | |
411 | /* Ensure aligned firmware buffer */ |
412 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); |
413 | |
414 | /* Perform firmware data transfer */ |
415 | offset = 0; |
416 | do { |
417 | ret = btmrvl_sdio_poll_card_status(card, |
418 | CARD_IO_READY | DN_LD_CARD_RDY); |
419 | if (ret < 0) { |
420 | BT_ERR("FW download with helper poll status" |
421 | " timeout @ %d", offset); |
422 | goto done; |
423 | } |
424 | |
425 | /* Check if there is more data ? */ |
426 | if (offset >= firmwarelen) |
427 | break; |
428 | |
429 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
430 | base0 = sdio_readb(card->func, |
431 | card->reg->sq_read_base_addr_a0, &ret); |
432 | if (ret) { |
433 | BT_ERR("BASE0 register read failed:" |
434 | " base0 = 0x%04X(%d)." |
435 | " Terminating download", |
436 | base0, base0); |
437 | ret = -EIO; |
438 | goto done; |
439 | } |
440 | base1 = sdio_readb(card->func, |
441 | card->reg->sq_read_base_addr_a1, &ret); |
442 | if (ret) { |
443 | BT_ERR("BASE1 register read failed:" |
444 | " base1 = 0x%04X(%d)." |
445 | " Terminating download", |
446 | base1, base1); |
447 | ret = -EIO; |
448 | goto done; |
449 | } |
450 | |
451 | len = (((u16) base1) << 8) | base0; |
452 | if (len) |
453 | break; |
454 | |
455 | udelay(10); |
456 | } |
457 | |
458 | if (!len) |
459 | break; |
460 | else if (len > BTM_UPLD_SIZE) { |
461 | BT_ERR("FW download failure @%d, invalid length %d", |
462 | offset, len); |
463 | ret = -EINVAL; |
464 | goto done; |
465 | } |
466 | |
467 | txlen = len; |
468 | |
469 | if (len & BIT(0)) { |
470 | count++; |
471 | if (count > MAX_WRITE_IOMEM_RETRY) { |
472 | BT_ERR("FW download failure @%d, " |
473 | "over max retry count", offset); |
474 | ret = -EIO; |
475 | goto done; |
476 | } |
477 | BT_ERR("FW CRC error indicated by the helper: " |
478 | "len = 0x%04X, txlen = %d", len, txlen); |
479 | len &= ~BIT(0); |
480 | /* Set txlen to 0 so as to resend from same offset */ |
481 | txlen = 0; |
482 | } else { |
483 | count = 0; |
484 | |
485 | /* Last block ? */ |
486 | if (firmwarelen - offset < txlen) |
487 | txlen = firmwarelen - offset; |
488 | |
489 | tx_blocks = DIV_ROUND_UP(txlen, blksz_dl); |
490 | |
491 | memcpy(fwbuf, &firmware[offset], txlen); |
492 | } |
493 | |
494 | ret = sdio_writesb(card->func, card->ioport, fwbuf, |
495 | tx_blocks * blksz_dl); |
496 | |
497 | if (ret < 0) { |
498 | BT_ERR("FW download, writesb(%d) failed @%d", |
499 | count, offset); |
500 | sdio_writeb(card->func, HOST_CMD53_FIN, |
501 | card->reg->cfg, &ret); |
502 | if (ret) |
503 | BT_ERR("writeb failed (CFG)"); |
504 | } |
505 | |
506 | offset += txlen; |
507 | } while (true); |
508 | |
509 | BT_DBG("FW download over, size %d bytes", offset); |
510 | |
511 | ret = 0; |
512 | |
513 | done: |
514 | kfree(tmpfwbuf); |
515 | release_firmware(fw_firmware); |
516 | return ret; |
517 | } |
518 | |
519 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) |
520 | { |
521 | u16 buf_len = 0; |
522 | int ret, num_blocks, blksz; |
523 | struct sk_buff *skb = NULL; |
524 | u32 type; |
525 | u8 *payload = NULL; |
526 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; |
527 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
528 | |
529 | if (!card || !card->func) { |
530 | BT_ERR("card or function is NULL!"); |
531 | ret = -EINVAL; |
532 | goto exit; |
533 | } |
534 | |
535 | /* Read the length of data to be transferred */ |
536 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); |
537 | if (ret < 0) { |
538 | BT_ERR("read rx_len failed"); |
539 | ret = -EIO; |
540 | goto exit; |
541 | } |
542 | |
543 | blksz = SDIO_BLOCK_SIZE; |
544 | num_blocks = DIV_ROUND_UP(buf_len, blksz); |
545 | |
546 | if (buf_len <= SDIO_HEADER_LEN |
547 | || (num_blocks * blksz) > ALLOC_BUF_SIZE) { |
548 | BT_ERR("invalid packet length: %d", buf_len); |
549 | ret = -EINVAL; |
550 | goto exit; |
551 | } |
552 | |
553 | /* Allocate buffer */ |
554 | skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC); |
555 | if (skb == NULL) { |
556 | BT_ERR("No free skb"); |
557 | ret = -ENOMEM; |
558 | goto exit; |
559 | } |
560 | |
561 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
562 | skb_put(skb, (unsigned long) skb->data & |
563 | (BTSDIO_DMA_ALIGN - 1)); |
564 | skb_pull(skb, (unsigned long) skb->data & |
565 | (BTSDIO_DMA_ALIGN - 1)); |
566 | } |
567 | |
568 | payload = skb->data; |
569 | |
570 | ret = sdio_readsb(card->func, payload, card->ioport, |
571 | num_blocks * blksz); |
572 | if (ret < 0) { |
573 | BT_ERR("readsb failed: %d", ret); |
574 | ret = -EIO; |
575 | goto exit; |
576 | } |
577 | |
578 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] |
579 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) |
580 | */ |
581 | |
582 | buf_len = payload[0]; |
583 | buf_len |= payload[1] << 8; |
584 | buf_len |= payload[2] << 16; |
585 | |
586 | if (buf_len > blksz * num_blocks) { |
587 | BT_ERR("Skip incorrect packet: hdrlen %d buffer %d", |
588 | buf_len, blksz * num_blocks); |
589 | ret = -EIO; |
590 | goto exit; |
591 | } |
592 | |
593 | type = payload[3]; |
594 | |
595 | switch (type) { |
596 | case HCI_ACLDATA_PKT: |
597 | case HCI_SCODATA_PKT: |
598 | case HCI_EVENT_PKT: |
599 | bt_cb(skb)->pkt_type = type; |
600 | skb->dev = (void *)hdev; |
601 | skb_put(skb, buf_len); |
602 | skb_pull(skb, SDIO_HEADER_LEN); |
603 | |
604 | if (type == HCI_EVENT_PKT) { |
605 | if (btmrvl_check_evtpkt(priv, skb)) |
606 | hci_recv_frame(skb); |
607 | } else { |
608 | hci_recv_frame(skb); |
609 | } |
610 | |
611 | hdev->stat.byte_rx += buf_len; |
612 | break; |
613 | |
614 | case MRVL_VENDOR_PKT: |
615 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; |
616 | skb->dev = (void *)hdev; |
617 | skb_put(skb, buf_len); |
618 | skb_pull(skb, SDIO_HEADER_LEN); |
619 | |
620 | if (btmrvl_process_event(priv, skb)) |
621 | hci_recv_frame(skb); |
622 | |
623 | hdev->stat.byte_rx += buf_len; |
624 | break; |
625 | |
626 | default: |
627 | BT_ERR("Unknown packet type:%d", type); |
628 | BT_ERR("hex: %*ph", blksz * num_blocks, payload); |
629 | |
630 | kfree_skb(skb); |
631 | skb = NULL; |
632 | break; |
633 | } |
634 | |
635 | exit: |
636 | if (ret) { |
637 | hdev->stat.err_rx++; |
638 | kfree_skb(skb); |
639 | } |
640 | |
641 | return ret; |
642 | } |
643 | |
644 | static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) |
645 | { |
646 | ulong flags; |
647 | u8 ireg; |
648 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
649 | |
650 | spin_lock_irqsave(&priv->driver_lock, flags); |
651 | ireg = sdio_ireg; |
652 | sdio_ireg = 0; |
653 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
654 | |
655 | sdio_claim_host(card->func); |
656 | if (ireg & DN_LD_HOST_INT_STATUS) { |
657 | if (priv->btmrvl_dev.tx_dnld_rdy) |
658 | BT_DBG("tx_done already received: " |
659 | " int_status=0x%x", ireg); |
660 | else |
661 | priv->btmrvl_dev.tx_dnld_rdy = true; |
662 | } |
663 | |
664 | if (ireg & UP_LD_HOST_INT_STATUS) |
665 | btmrvl_sdio_card_to_host(priv); |
666 | |
667 | sdio_release_host(card->func); |
668 | |
669 | return 0; |
670 | } |
671 | |
672 | static void btmrvl_sdio_interrupt(struct sdio_func *func) |
673 | { |
674 | struct btmrvl_private *priv; |
675 | struct btmrvl_sdio_card *card; |
676 | ulong flags; |
677 | u8 ireg = 0; |
678 | int ret; |
679 | |
680 | card = sdio_get_drvdata(func); |
681 | if (!card || !card->priv) { |
682 | BT_ERR("sbi_interrupt(%p) card or priv is " |
683 | "NULL, card=%p\n", func, card); |
684 | return; |
685 | } |
686 | |
687 | priv = card->priv; |
688 | |
689 | ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); |
690 | if (ret) { |
691 | BT_ERR("sdio_readb: read int status register failed"); |
692 | return; |
693 | } |
694 | |
695 | if (ireg != 0) { |
696 | /* |
697 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS |
698 | * Clear the interrupt status register and re-enable the |
699 | * interrupt. |
700 | */ |
701 | BT_DBG("ireg = 0x%x", ireg); |
702 | |
703 | sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | |
704 | UP_LD_HOST_INT_STATUS), |
705 | card->reg->host_intstatus, &ret); |
706 | if (ret) { |
707 | BT_ERR("sdio_writeb: clear int status register failed"); |
708 | return; |
709 | } |
710 | } |
711 | |
712 | spin_lock_irqsave(&priv->driver_lock, flags); |
713 | sdio_ireg |= ireg; |
714 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
715 | |
716 | btmrvl_interrupt(priv); |
717 | } |
718 | |
719 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) |
720 | { |
721 | struct sdio_func *func; |
722 | u8 reg; |
723 | int ret = 0; |
724 | |
725 | if (!card || !card->func) { |
726 | BT_ERR("Error: card or function is NULL!"); |
727 | ret = -EINVAL; |
728 | goto failed; |
729 | } |
730 | |
731 | func = card->func; |
732 | |
733 | sdio_claim_host(func); |
734 | |
735 | ret = sdio_enable_func(func); |
736 | if (ret) { |
737 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); |
738 | ret = -EIO; |
739 | goto release_host; |
740 | } |
741 | |
742 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); |
743 | if (ret) { |
744 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); |
745 | ret = -EIO; |
746 | goto disable_func; |
747 | } |
748 | |
749 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); |
750 | if (ret) { |
751 | BT_ERR("cannot set SDIO block size"); |
752 | ret = -EIO; |
753 | goto release_irq; |
754 | } |
755 | |
756 | reg = sdio_readb(func, card->reg->io_port_0, &ret); |
757 | if (ret < 0) { |
758 | ret = -EIO; |
759 | goto release_irq; |
760 | } |
761 | |
762 | card->ioport = reg; |
763 | |
764 | reg = sdio_readb(func, card->reg->io_port_1, &ret); |
765 | if (ret < 0) { |
766 | ret = -EIO; |
767 | goto release_irq; |
768 | } |
769 | |
770 | card->ioport |= (reg << 8); |
771 | |
772 | reg = sdio_readb(func, card->reg->io_port_2, &ret); |
773 | if (ret < 0) { |
774 | ret = -EIO; |
775 | goto release_irq; |
776 | } |
777 | |
778 | card->ioport |= (reg << 16); |
779 | |
780 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); |
781 | |
782 | sdio_set_drvdata(func, card); |
783 | |
784 | sdio_release_host(func); |
785 | |
786 | return 0; |
787 | |
788 | release_irq: |
789 | sdio_release_irq(func); |
790 | |
791 | disable_func: |
792 | sdio_disable_func(func); |
793 | |
794 | release_host: |
795 | sdio_release_host(func); |
796 | |
797 | failed: |
798 | return ret; |
799 | } |
800 | |
801 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) |
802 | { |
803 | if (card && card->func) { |
804 | sdio_claim_host(card->func); |
805 | sdio_release_irq(card->func); |
806 | sdio_disable_func(card->func); |
807 | sdio_release_host(card->func); |
808 | sdio_set_drvdata(card->func, NULL); |
809 | } |
810 | |
811 | return 0; |
812 | } |
813 | |
814 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) |
815 | { |
816 | int ret; |
817 | |
818 | if (!card || !card->func) |
819 | return -EINVAL; |
820 | |
821 | sdio_claim_host(card->func); |
822 | |
823 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); |
824 | |
825 | btmrvl_sdio_get_rx_unit(card); |
826 | |
827 | sdio_release_host(card->func); |
828 | |
829 | return ret; |
830 | } |
831 | |
832 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) |
833 | { |
834 | int ret; |
835 | |
836 | if (!card || !card->func) |
837 | return -EINVAL; |
838 | |
839 | sdio_claim_host(card->func); |
840 | |
841 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); |
842 | |
843 | sdio_release_host(card->func); |
844 | |
845 | return ret; |
846 | } |
847 | |
848 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, |
849 | u8 *payload, u16 nb) |
850 | { |
851 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
852 | int ret = 0; |
853 | int buf_block_len; |
854 | int blksz; |
855 | int i = 0; |
856 | u8 *buf = NULL; |
857 | void *tmpbuf = NULL; |
858 | int tmpbufsz; |
859 | |
860 | if (!card || !card->func) { |
861 | BT_ERR("card or function is NULL!"); |
862 | return -EINVAL; |
863 | } |
864 | |
865 | buf = payload; |
866 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
867 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
868 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
869 | if (!tmpbuf) |
870 | return -ENOMEM; |
871 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
872 | memcpy(buf, payload, nb); |
873 | } |
874 | |
875 | blksz = SDIO_BLOCK_SIZE; |
876 | buf_block_len = DIV_ROUND_UP(nb, blksz); |
877 | |
878 | sdio_claim_host(card->func); |
879 | |
880 | do { |
881 | /* Transfer data to card */ |
882 | ret = sdio_writesb(card->func, card->ioport, buf, |
883 | buf_block_len * blksz); |
884 | if (ret < 0) { |
885 | i++; |
886 | BT_ERR("i=%d writesb failed: %d", i, ret); |
887 | BT_ERR("hex: %*ph", nb, payload); |
888 | ret = -EIO; |
889 | if (i > MAX_WRITE_IOMEM_RETRY) |
890 | goto exit; |
891 | } |
892 | } while (ret); |
893 | |
894 | priv->btmrvl_dev.tx_dnld_rdy = false; |
895 | |
896 | exit: |
897 | sdio_release_host(card->func); |
898 | kfree(tmpbuf); |
899 | |
900 | return ret; |
901 | } |
902 | |
903 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) |
904 | { |
905 | int ret; |
906 | u8 fws0; |
907 | int pollnum = MAX_POLL_TRIES; |
908 | |
909 | if (!card || !card->func) { |
910 | BT_ERR("card or function is NULL!"); |
911 | return -EINVAL; |
912 | } |
913 | |
914 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { |
915 | BT_DBG("Firmware already downloaded!"); |
916 | return 0; |
917 | } |
918 | |
919 | sdio_claim_host(card->func); |
920 | |
921 | /* Check if other function driver is downloading the firmware */ |
922 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); |
923 | if (ret) { |
924 | BT_ERR("Failed to read FW downloading status!"); |
925 | ret = -EIO; |
926 | goto done; |
927 | } |
928 | if (fws0) { |
929 | BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); |
930 | |
931 | /* Give other function more time to download the firmware */ |
932 | pollnum *= 10; |
933 | } else { |
934 | if (card->helper) { |
935 | ret = btmrvl_sdio_download_helper(card); |
936 | if (ret) { |
937 | BT_ERR("Failed to download helper!"); |
938 | ret = -EIO; |
939 | goto done; |
940 | } |
941 | } |
942 | |
943 | if (btmrvl_sdio_download_fw_w_helper(card)) { |
944 | BT_ERR("Failed to download firmware!"); |
945 | ret = -EIO; |
946 | goto done; |
947 | } |
948 | } |
949 | |
950 | sdio_release_host(card->func); |
951 | |
952 | /* |
953 | * winner or not, with this test the FW synchronizes when the |
954 | * module can continue its initialization |
955 | */ |
956 | if (btmrvl_sdio_verify_fw_download(card, pollnum)) { |
957 | BT_ERR("FW failed to be active in time!"); |
958 | return -ETIMEDOUT; |
959 | } |
960 | |
961 | return 0; |
962 | |
963 | done: |
964 | sdio_release_host(card->func); |
965 | return ret; |
966 | } |
967 | |
968 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) |
969 | { |
970 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
971 | int ret = 0; |
972 | |
973 | if (!card || !card->func) { |
974 | BT_ERR("card or function is NULL!"); |
975 | return -EINVAL; |
976 | } |
977 | |
978 | sdio_claim_host(card->func); |
979 | |
980 | sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); |
981 | |
982 | sdio_release_host(card->func); |
983 | |
984 | BT_DBG("wake up firmware"); |
985 | |
986 | return ret; |
987 | } |
988 | |
989 | static int btmrvl_sdio_probe(struct sdio_func *func, |
990 | const struct sdio_device_id *id) |
991 | { |
992 | int ret = 0; |
993 | struct btmrvl_private *priv = NULL; |
994 | struct btmrvl_sdio_card *card = NULL; |
995 | |
996 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", |
997 | id->vendor, id->device, id->class, func->num); |
998 | |
999 | card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); |
1000 | if (!card) |
1001 | return -ENOMEM; |
1002 | |
1003 | card->func = func; |
1004 | |
1005 | if (id->driver_data) { |
1006 | struct btmrvl_sdio_device *data = (void *) id->driver_data; |
1007 | card->helper = data->helper; |
1008 | card->firmware = data->firmware; |
1009 | card->reg = data->reg; |
1010 | card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; |
1011 | } |
1012 | |
1013 | if (btmrvl_sdio_register_dev(card) < 0) { |
1014 | BT_ERR("Failed to register BT device!"); |
1015 | return -ENODEV; |
1016 | } |
1017 | |
1018 | /* Disable the interrupts on the card */ |
1019 | btmrvl_sdio_disable_host_int(card); |
1020 | |
1021 | if (btmrvl_sdio_download_fw(card)) { |
1022 | BT_ERR("Downloading firmware failed!"); |
1023 | ret = -ENODEV; |
1024 | goto unreg_dev; |
1025 | } |
1026 | |
1027 | btmrvl_sdio_enable_host_int(card); |
1028 | |
1029 | priv = btmrvl_add_card(card); |
1030 | if (!priv) { |
1031 | BT_ERR("Initializing card failed!"); |
1032 | ret = -ENODEV; |
1033 | goto disable_host_int; |
1034 | } |
1035 | |
1036 | card->priv = priv; |
1037 | |
1038 | /* Initialize the interface specific function pointers */ |
1039 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; |
1040 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; |
1041 | priv->hw_process_int_status = btmrvl_sdio_process_int_status; |
1042 | |
1043 | if (btmrvl_register_hdev(priv)) { |
1044 | BT_ERR("Register hdev failed!"); |
1045 | ret = -ENODEV; |
1046 | goto disable_host_int; |
1047 | } |
1048 | |
1049 | priv->btmrvl_dev.psmode = 1; |
1050 | btmrvl_enable_ps(priv); |
1051 | |
1052 | priv->btmrvl_dev.gpio_gap = 0xffff; |
1053 | btmrvl_send_hscfg_cmd(priv); |
1054 | |
1055 | return 0; |
1056 | |
1057 | disable_host_int: |
1058 | btmrvl_sdio_disable_host_int(card); |
1059 | unreg_dev: |
1060 | btmrvl_sdio_unregister_dev(card); |
1061 | return ret; |
1062 | } |
1063 | |
1064 | static void btmrvl_sdio_remove(struct sdio_func *func) |
1065 | { |
1066 | struct btmrvl_sdio_card *card; |
1067 | |
1068 | if (func) { |
1069 | card = sdio_get_drvdata(func); |
1070 | if (card) { |
1071 | /* Send SHUTDOWN command & disable interrupt |
1072 | * if user removes the module. |
1073 | */ |
1074 | if (user_rmmod) { |
1075 | btmrvl_send_module_cfg_cmd(card->priv, |
1076 | MODULE_SHUTDOWN_REQ); |
1077 | btmrvl_sdio_disable_host_int(card); |
1078 | } |
1079 | BT_DBG("unregester dev"); |
1080 | btmrvl_sdio_unregister_dev(card); |
1081 | btmrvl_remove_card(card->priv); |
1082 | } |
1083 | } |
1084 | } |
1085 | |
1086 | static int btmrvl_sdio_suspend(struct device *dev) |
1087 | { |
1088 | struct sdio_func *func = dev_to_sdio_func(dev); |
1089 | struct btmrvl_sdio_card *card; |
1090 | struct btmrvl_private *priv; |
1091 | mmc_pm_flag_t pm_flags; |
1092 | struct hci_dev *hcidev; |
1093 | |
1094 | if (func) { |
1095 | pm_flags = sdio_get_host_pm_caps(func); |
1096 | BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func), |
1097 | pm_flags); |
1098 | if (!(pm_flags & MMC_PM_KEEP_POWER)) { |
1099 | BT_ERR("%s: cannot remain alive while suspended", |
1100 | sdio_func_id(func)); |
1101 | return -ENOSYS; |
1102 | } |
1103 | card = sdio_get_drvdata(func); |
1104 | if (!card || !card->priv) { |
1105 | BT_ERR("card or priv structure is not valid"); |
1106 | return 0; |
1107 | } |
1108 | } else { |
1109 | BT_ERR("sdio_func is not specified"); |
1110 | return 0; |
1111 | } |
1112 | |
1113 | priv = card->priv; |
1114 | |
1115 | if (priv->adapter->hs_state != HS_ACTIVATED) { |
1116 | if (btmrvl_enable_hs(priv)) { |
1117 | BT_ERR("HS not actived, suspend failed!"); |
1118 | return -EBUSY; |
1119 | } |
1120 | } |
1121 | hcidev = priv->btmrvl_dev.hcidev; |
1122 | BT_DBG("%s: SDIO suspend", hcidev->name); |
1123 | hci_suspend_dev(hcidev); |
1124 | skb_queue_purge(&priv->adapter->tx_queue); |
1125 | |
1126 | priv->adapter->is_suspended = true; |
1127 | |
1128 | /* We will keep the power when hs enabled successfully */ |
1129 | if (priv->adapter->hs_state == HS_ACTIVATED) { |
1130 | BT_DBG("suspend with MMC_PM_KEEP_POWER"); |
1131 | return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
1132 | } else { |
1133 | BT_DBG("suspend without MMC_PM_KEEP_POWER"); |
1134 | return 0; |
1135 | } |
1136 | } |
1137 | |
1138 | static int btmrvl_sdio_resume(struct device *dev) |
1139 | { |
1140 | struct sdio_func *func = dev_to_sdio_func(dev); |
1141 | struct btmrvl_sdio_card *card; |
1142 | struct btmrvl_private *priv; |
1143 | mmc_pm_flag_t pm_flags; |
1144 | struct hci_dev *hcidev; |
1145 | |
1146 | if (func) { |
1147 | pm_flags = sdio_get_host_pm_caps(func); |
1148 | BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func), |
1149 | pm_flags); |
1150 | card = sdio_get_drvdata(func); |
1151 | if (!card || !card->priv) { |
1152 | BT_ERR("card or priv structure is not valid"); |
1153 | return 0; |
1154 | } |
1155 | } else { |
1156 | BT_ERR("sdio_func is not specified"); |
1157 | return 0; |
1158 | } |
1159 | priv = card->priv; |
1160 | |
1161 | if (!priv->adapter->is_suspended) { |
1162 | BT_DBG("device already resumed"); |
1163 | return 0; |
1164 | } |
1165 | |
1166 | priv->adapter->is_suspended = false; |
1167 | hcidev = priv->btmrvl_dev.hcidev; |
1168 | BT_DBG("%s: SDIO resume", hcidev->name); |
1169 | hci_resume_dev(hcidev); |
1170 | priv->hw_wakeup_firmware(priv); |
1171 | priv->adapter->hs_state = HS_DEACTIVATED; |
1172 | BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name); |
1173 | |
1174 | return 0; |
1175 | } |
1176 | |
1177 | static const struct dev_pm_ops btmrvl_sdio_pm_ops = { |
1178 | .suspend = btmrvl_sdio_suspend, |
1179 | .resume = btmrvl_sdio_resume, |
1180 | }; |
1181 | |
1182 | static struct sdio_driver bt_mrvl_sdio = { |
1183 | .name = "btmrvl_sdio", |
1184 | .id_table = btmrvl_sdio_ids, |
1185 | .probe = btmrvl_sdio_probe, |
1186 | .remove = btmrvl_sdio_remove, |
1187 | .drv = { |
1188 | .owner = THIS_MODULE, |
1189 | .pm = &btmrvl_sdio_pm_ops, |
1190 | } |
1191 | }; |
1192 | |
1193 | static int __init btmrvl_sdio_init_module(void) |
1194 | { |
1195 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
1196 | BT_ERR("SDIO Driver Registration Failed"); |
1197 | return -ENODEV; |
1198 | } |
1199 | |
1200 | /* Clear the flag in case user removes the card. */ |
1201 | user_rmmod = 0; |
1202 | |
1203 | return 0; |
1204 | } |
1205 | |
1206 | static void __exit btmrvl_sdio_exit_module(void) |
1207 | { |
1208 | /* Set the flag as user is removing this module. */ |
1209 | user_rmmod = 1; |
1210 | |
1211 | sdio_unregister_driver(&bt_mrvl_sdio); |
1212 | } |
1213 | |
1214 | module_init(btmrvl_sdio_init_module); |
1215 | module_exit(btmrvl_sdio_exit_module); |
1216 | |
1217 | MODULE_AUTHOR("Marvell International Ltd."); |
1218 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
1219 | MODULE_VERSION(VERSION); |
1220 | MODULE_LICENSE("GPL v2"); |
1221 | MODULE_FIRMWARE("mrvl/sd8688_helper.bin"); |
1222 | MODULE_FIRMWARE("mrvl/sd8688.bin"); |
1223 | MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); |
1224 | MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin"); |
1225 | MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin"); |
1226 |
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jz-2.6.34
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jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9