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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_device btmrvl_sdio_sd8688 = { | |
86 | .helper = "sd8688_helper.bin", | |
87 | .firmware = "sd8688.bin", | |
88 | .reg = &btmrvl_reg_8688, | |
89 | .sd_blksz_fw_dl = 64, | |
90 | }; | |
91 | ||
92 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { | |
93 | .helper = NULL, | |
94 | .firmware = "mrvl/sd8787_uapsta.bin", | |
95 | .reg = &btmrvl_reg_87xx, | |
96 | .sd_blksz_fw_dl = 256, | |
97 | }; | |
98 | ||
99 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { | |
100 | .helper = NULL, | |
101 | .firmware = "mrvl/sd8797_uapsta.bin", | |
102 | .reg = &btmrvl_reg_87xx, | |
103 | .sd_blksz_fw_dl = 256, | |
104 | }; | |
105 | ||
106 | static const struct sdio_device_id btmrvl_sdio_ids[] = { | |
107 | /* Marvell SD8688 Bluetooth device */ | |
108 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), | |
109 | .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, | |
110 | /* Marvell SD8787 Bluetooth device */ | |
111 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), | |
112 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, | |
113 | /* Marvell SD8797 Bluetooth device */ | |
114 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), | |
115 | .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, | |
116 | ||
117 | { } /* Terminating entry */ | |
118 | }; | |
119 | ||
120 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); | |
121 | ||
122 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) | |
123 | { | |
124 | u8 reg; | |
125 | int ret; | |
126 | ||
127 | reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); | |
128 | if (!ret) | |
129 | card->rx_unit = reg; | |
130 | ||
131 | return ret; | |
132 | } | |
133 | ||
134 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) | |
135 | { | |
136 | u8 fws0, fws1; | |
137 | int ret; | |
138 | ||
139 | *dat = 0; | |
140 | ||
141 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); | |
142 | if (ret) | |
143 | return -EIO; | |
144 | ||
145 | fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); | |
146 | if (ret) | |
147 | return -EIO; | |
148 | ||
149 | *dat = (((u16) fws1) << 8) | fws0; | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) | |
155 | { | |
156 | u8 reg; | |
157 | int ret; | |
158 | ||
159 | reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); | |
160 | if (!ret) | |
161 | *dat = (u16) reg << card->rx_unit; | |
162 | ||
163 | return ret; | |
164 | } | |
165 | ||
166 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, | |
167 | u8 mask) | |
168 | { | |
169 | int ret; | |
170 | ||
171 | sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); | |
172 | if (ret) { | |
173 | BT_ERR("Unable to enable the host interrupt!"); | |
174 | ret = -EIO; | |
175 | } | |
176 | ||
177 | return ret; | |
178 | } | |
179 | ||
180 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, | |
181 | u8 mask) | |
182 | { | |
183 | u8 host_int_mask; | |
184 | int ret; | |
185 | ||
186 | host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); | |
187 | if (ret) | |
188 | return -EIO; | |
189 | ||
190 | host_int_mask &= ~mask; | |
191 | ||
192 | sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); | |
193 | if (ret < 0) { | |
194 | BT_ERR("Unable to disable the host interrupt!"); | |
195 | return -EIO; | |
196 | } | |
197 | ||
198 | return 0; | |
199 | } | |
200 | ||
201 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) | |
202 | { | |
203 | unsigned int tries; | |
204 | u8 status; | |
205 | int ret; | |
206 | ||
207 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { | |
208 | status = sdio_readb(card->func, card->reg->card_status, &ret); | |
209 | if (ret) | |
210 | goto failed; | |
211 | if ((status & bits) == bits) | |
212 | return ret; | |
213 | ||
214 | udelay(1); | |
215 | } | |
216 | ||
217 | ret = -ETIMEDOUT; | |
218 | ||
219 | failed: | |
220 | BT_ERR("FAILED! ret=%d", ret); | |
221 | ||
222 | return ret; | |
223 | } | |
224 | ||
225 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, | |
226 | int pollnum) | |
227 | { | |
228 | int ret = -ETIMEDOUT; | |
229 | u16 firmwarestat; | |
230 | unsigned int tries; | |
231 | ||
232 | /* Wait for firmware to become ready */ | |
233 | for (tries = 0; tries < pollnum; tries++) { | |
234 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) | |
235 | continue; | |
236 | ||
237 | if (firmwarestat == FIRMWARE_READY) { | |
238 | ret = 0; | |
239 | break; | |
240 | } else { | |
241 | msleep(10); | |
242 | } | |
243 | } | |
244 | ||
245 | return ret; | |
246 | } | |
247 | ||
248 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) | |
249 | { | |
250 | const struct firmware *fw_helper = NULL; | |
251 | const u8 *helper = NULL; | |
252 | int ret; | |
253 | void *tmphlprbuf = NULL; | |
254 | int tmphlprbufsz, hlprblknow, helperlen; | |
255 | u8 *helperbuf; | |
256 | u32 tx_len; | |
257 | ||
258 | ret = request_firmware(&fw_helper, card->helper, | |
259 | &card->func->dev); | |
260 | if ((ret < 0) || !fw_helper) { | |
261 | BT_ERR("request_firmware(helper) failed, error code = %d", | |
262 | ret); | |
263 | ret = -ENOENT; | |
264 | goto done; | |
265 | } | |
266 | ||
267 | helper = fw_helper->data; | |
268 | helperlen = fw_helper->size; | |
269 | ||
270 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", | |
271 | helperlen, SDIO_BLOCK_SIZE); | |
272 | ||
273 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
274 | ||
275 | tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); | |
276 | if (!tmphlprbuf) { | |
277 | BT_ERR("Unable to allocate buffer for helper." | |
278 | " Terminating download"); | |
279 | ret = -ENOMEM; | |
280 | goto done; | |
281 | } | |
282 | ||
283 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); | |
284 | ||
285 | /* Perform helper data transfer */ | |
286 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) | |
287 | - SDIO_HEADER_LEN; | |
288 | hlprblknow = 0; | |
289 | ||
290 | do { | |
291 | ret = btmrvl_sdio_poll_card_status(card, | |
292 | CARD_IO_READY | DN_LD_CARD_RDY); | |
293 | if (ret < 0) { | |
294 | BT_ERR("Helper download poll status timeout @ %d", | |
295 | hlprblknow); | |
296 | goto done; | |
297 | } | |
298 | ||
299 | /* Check if there is more data? */ | |
300 | if (hlprblknow >= helperlen) | |
301 | break; | |
302 | ||
303 | if (helperlen - hlprblknow < tx_len) | |
304 | tx_len = helperlen - hlprblknow; | |
305 | ||
306 | /* Little-endian */ | |
307 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); | |
308 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); | |
309 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); | |
310 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); | |
311 | ||
312 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], | |
313 | tx_len); | |
314 | ||
315 | /* Now send the data */ | |
316 | ret = sdio_writesb(card->func, card->ioport, helperbuf, | |
317 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); | |
318 | if (ret < 0) { | |
319 | BT_ERR("IO error during helper download @ %d", | |
320 | hlprblknow); | |
321 | goto done; | |
322 | } | |
323 | ||
324 | hlprblknow += tx_len; | |
325 | } while (true); | |
326 | ||
327 | BT_DBG("Transferring helper image EOF block"); | |
328 | ||
329 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); | |
330 | ||
331 | ret = sdio_writesb(card->func, card->ioport, helperbuf, | |
332 | SDIO_BLOCK_SIZE); | |
333 | if (ret < 0) { | |
334 | BT_ERR("IO error in writing helper image EOF block"); | |
335 | goto done; | |
336 | } | |
337 | ||
338 | ret = 0; | |
339 | ||
340 | done: | |
341 | kfree(tmphlprbuf); | |
342 | if (fw_helper) | |
343 | release_firmware(fw_helper); | |
344 | ||
345 | return ret; | |
346 | } | |
347 | ||
348 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) | |
349 | { | |
350 | const struct firmware *fw_firmware = NULL; | |
351 | const u8 *firmware = NULL; | |
352 | int firmwarelen, tmpfwbufsz, ret; | |
353 | unsigned int tries, offset; | |
354 | u8 base0, base1; | |
355 | void *tmpfwbuf = NULL; | |
356 | u8 *fwbuf; | |
357 | u16 len, blksz_dl = card->sd_blksz_fw_dl; | |
358 | int txlen = 0, tx_blocks = 0, count = 0; | |
359 | ||
360 | ret = request_firmware(&fw_firmware, card->firmware, | |
361 | &card->func->dev); | |
362 | if ((ret < 0) || !fw_firmware) { | |
363 | BT_ERR("request_firmware(firmware) failed, error code = %d", | |
364 | ret); | |
365 | ret = -ENOENT; | |
366 | goto done; | |
367 | } | |
368 | ||
369 | firmware = fw_firmware->data; | |
370 | firmwarelen = fw_firmware->size; | |
371 | ||
372 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); | |
373 | ||
374 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
375 | tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); | |
376 | if (!tmpfwbuf) { | |
377 | BT_ERR("Unable to allocate buffer for firmware." | |
378 | " Terminating download"); | |
379 | ret = -ENOMEM; | |
380 | goto done; | |
381 | } | |
382 | ||
383 | /* Ensure aligned firmware buffer */ | |
384 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); | |
385 | ||
386 | /* Perform firmware data transfer */ | |
387 | offset = 0; | |
388 | do { | |
389 | ret = btmrvl_sdio_poll_card_status(card, | |
390 | CARD_IO_READY | DN_LD_CARD_RDY); | |
391 | if (ret < 0) { | |
392 | BT_ERR("FW download with helper poll status" | |
393 | " timeout @ %d", offset); | |
394 | goto done; | |
395 | } | |
396 | ||
397 | /* Check if there is more data ? */ | |
398 | if (offset >= firmwarelen) | |
399 | break; | |
400 | ||
401 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
402 | base0 = sdio_readb(card->func, | |
403 | card->reg->sq_read_base_addr_a0, &ret); | |
404 | if (ret) { | |
405 | BT_ERR("BASE0 register read failed:" | |
406 | " base0 = 0x%04X(%d)." | |
407 | " Terminating download", | |
408 | base0, base0); | |
409 | ret = -EIO; | |
410 | goto done; | |
411 | } | |
412 | base1 = sdio_readb(card->func, | |
413 | card->reg->sq_read_base_addr_a1, &ret); | |
414 | if (ret) { | |
415 | BT_ERR("BASE1 register read failed:" | |
416 | " base1 = 0x%04X(%d)." | |
417 | " Terminating download", | |
418 | base1, base1); | |
419 | ret = -EIO; | |
420 | goto done; | |
421 | } | |
422 | ||
423 | len = (((u16) base1) << 8) | base0; | |
424 | if (len) | |
425 | break; | |
426 | ||
427 | udelay(10); | |
428 | } | |
429 | ||
430 | if (!len) | |
431 | break; | |
432 | else if (len > BTM_UPLD_SIZE) { | |
433 | BT_ERR("FW download failure @%d, invalid length %d", | |
434 | offset, len); | |
435 | ret = -EINVAL; | |
436 | goto done; | |
437 | } | |
438 | ||
439 | txlen = len; | |
440 | ||
441 | if (len & BIT(0)) { | |
442 | count++; | |
443 | if (count > MAX_WRITE_IOMEM_RETRY) { | |
444 | BT_ERR("FW download failure @%d, " | |
445 | "over max retry count", offset); | |
446 | ret = -EIO; | |
447 | goto done; | |
448 | } | |
449 | BT_ERR("FW CRC error indicated by the helper: " | |
450 | "len = 0x%04X, txlen = %d", len, txlen); | |
451 | len &= ~BIT(0); | |
452 | /* Set txlen to 0 so as to resend from same offset */ | |
453 | txlen = 0; | |
454 | } else { | |
455 | count = 0; | |
456 | ||
457 | /* Last block ? */ | |
458 | if (firmwarelen - offset < txlen) | |
459 | txlen = firmwarelen - offset; | |
460 | ||
461 | tx_blocks = (txlen + blksz_dl - 1) / blksz_dl; | |
462 | ||
463 | memcpy(fwbuf, &firmware[offset], txlen); | |
464 | } | |
465 | ||
466 | ret = sdio_writesb(card->func, card->ioport, fwbuf, | |
467 | tx_blocks * blksz_dl); | |
468 | ||
469 | if (ret < 0) { | |
470 | BT_ERR("FW download, writesb(%d) failed @%d", | |
471 | count, offset); | |
472 | sdio_writeb(card->func, HOST_CMD53_FIN, | |
473 | card->reg->cfg, &ret); | |
474 | if (ret) | |
475 | BT_ERR("writeb failed (CFG)"); | |
476 | } | |
477 | ||
478 | offset += txlen; | |
479 | } while (true); | |
480 | ||
481 | BT_DBG("FW download over, size %d bytes", offset); | |
482 | ||
483 | ret = 0; | |
484 | ||
485 | done: | |
486 | kfree(tmpfwbuf); | |
487 | ||
488 | if (fw_firmware) | |
489 | release_firmware(fw_firmware); | |
490 | ||
491 | return ret; | |
492 | } | |
493 | ||
494 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) | |
495 | { | |
496 | u16 buf_len = 0; | |
497 | int ret, buf_block_len, blksz; | |
498 | struct sk_buff *skb = NULL; | |
499 | u32 type; | |
500 | u8 *payload = NULL; | |
501 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; | |
502 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
503 | ||
504 | if (!card || !card->func) { | |
505 | BT_ERR("card or function is NULL!"); | |
506 | ret = -EINVAL; | |
507 | goto exit; | |
508 | } | |
509 | ||
510 | /* Read the length of data to be transferred */ | |
511 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); | |
512 | if (ret < 0) { | |
513 | BT_ERR("read rx_len failed"); | |
514 | ret = -EIO; | |
515 | goto exit; | |
516 | } | |
517 | ||
518 | blksz = SDIO_BLOCK_SIZE; | |
519 | buf_block_len = (buf_len + blksz - 1) / blksz; | |
520 | ||
521 | if (buf_len <= SDIO_HEADER_LEN | |
522 | || (buf_block_len * blksz) > ALLOC_BUF_SIZE) { | |
523 | BT_ERR("invalid packet length: %d", buf_len); | |
524 | ret = -EINVAL; | |
525 | goto exit; | |
526 | } | |
527 | ||
528 | /* Allocate buffer */ | |
529 | skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN, | |
530 | GFP_ATOMIC); | |
531 | if (skb == NULL) { | |
532 | BT_ERR("No free skb"); | |
533 | goto exit; | |
534 | } | |
535 | ||
536 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { | |
537 | skb_put(skb, (unsigned long) skb->data & | |
538 | (BTSDIO_DMA_ALIGN - 1)); | |
539 | skb_pull(skb, (unsigned long) skb->data & | |
540 | (BTSDIO_DMA_ALIGN - 1)); | |
541 | } | |
542 | ||
543 | payload = skb->data; | |
544 | ||
545 | ret = sdio_readsb(card->func, payload, card->ioport, | |
546 | buf_block_len * blksz); | |
547 | if (ret < 0) { | |
548 | BT_ERR("readsb failed: %d", ret); | |
549 | ret = -EIO; | |
550 | goto exit; | |
551 | } | |
552 | ||
553 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] | |
554 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) | |
555 | */ | |
556 | ||
557 | buf_len = payload[0]; | |
558 | buf_len |= (u16) payload[1] << 8; | |
559 | type = payload[3]; | |
560 | ||
561 | switch (type) { | |
562 | case HCI_ACLDATA_PKT: | |
563 | case HCI_SCODATA_PKT: | |
564 | case HCI_EVENT_PKT: | |
565 | bt_cb(skb)->pkt_type = type; | |
566 | skb->dev = (void *)hdev; | |
567 | skb_put(skb, buf_len); | |
568 | skb_pull(skb, SDIO_HEADER_LEN); | |
569 | ||
570 | if (type == HCI_EVENT_PKT) | |
571 | btmrvl_check_evtpkt(priv, skb); | |
572 | ||
573 | hci_recv_frame(skb); | |
574 | hdev->stat.byte_rx += buf_len; | |
575 | break; | |
576 | ||
577 | case MRVL_VENDOR_PKT: | |
578 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; | |
579 | skb->dev = (void *)hdev; | |
580 | skb_put(skb, buf_len); | |
581 | skb_pull(skb, SDIO_HEADER_LEN); | |
582 | ||
583 | if (btmrvl_process_event(priv, skb)) | |
584 | hci_recv_frame(skb); | |
585 | ||
586 | hdev->stat.byte_rx += buf_len; | |
587 | break; | |
588 | ||
589 | default: | |
590 | BT_ERR("Unknown packet type:%d", type); | |
591 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload, | |
592 | blksz * buf_block_len); | |
593 | ||
594 | kfree_skb(skb); | |
595 | skb = NULL; | |
596 | break; | |
597 | } | |
598 | ||
599 | exit: | |
600 | if (ret) { | |
601 | hdev->stat.err_rx++; | |
602 | if (skb) | |
603 | kfree_skb(skb); | |
604 | } | |
605 | ||
606 | return ret; | |
607 | } | |
608 | ||
609 | static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) | |
610 | { | |
611 | ulong flags; | |
612 | u8 ireg; | |
613 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
614 | ||
615 | spin_lock_irqsave(&priv->driver_lock, flags); | |
616 | ireg = sdio_ireg; | |
617 | sdio_ireg = 0; | |
618 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
619 | ||
620 | sdio_claim_host(card->func); | |
621 | if (ireg & DN_LD_HOST_INT_STATUS) { | |
622 | if (priv->btmrvl_dev.tx_dnld_rdy) | |
623 | BT_DBG("tx_done already received: " | |
624 | " int_status=0x%x", ireg); | |
625 | else | |
626 | priv->btmrvl_dev.tx_dnld_rdy = true; | |
627 | } | |
628 | ||
629 | if (ireg & UP_LD_HOST_INT_STATUS) | |
630 | btmrvl_sdio_card_to_host(priv); | |
631 | ||
632 | sdio_release_host(card->func); | |
633 | ||
634 | return 0; | |
635 | } | |
636 | ||
637 | static void btmrvl_sdio_interrupt(struct sdio_func *func) | |
638 | { | |
639 | struct btmrvl_private *priv; | |
640 | struct btmrvl_sdio_card *card; | |
641 | ulong flags; | |
642 | u8 ireg = 0; | |
643 | int ret; | |
644 | ||
645 | card = sdio_get_drvdata(func); | |
646 | if (!card || !card->priv) { | |
647 | BT_ERR("sbi_interrupt(%p) card or priv is " | |
648 | "NULL, card=%p\n", func, card); | |
649 | return; | |
650 | } | |
651 | ||
652 | priv = card->priv; | |
653 | ||
654 | ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); | |
655 | if (ret) { | |
656 | BT_ERR("sdio_readb: read int status register failed"); | |
657 | return; | |
658 | } | |
659 | ||
660 | if (ireg != 0) { | |
661 | /* | |
662 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
663 | * Clear the interrupt status register and re-enable the | |
664 | * interrupt. | |
665 | */ | |
666 | BT_DBG("ireg = 0x%x", ireg); | |
667 | ||
668 | sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | | |
669 | UP_LD_HOST_INT_STATUS), | |
670 | card->reg->host_intstatus, &ret); | |
671 | if (ret) { | |
672 | BT_ERR("sdio_writeb: clear int status register failed"); | |
673 | return; | |
674 | } | |
675 | } | |
676 | ||
677 | spin_lock_irqsave(&priv->driver_lock, flags); | |
678 | sdio_ireg |= ireg; | |
679 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
680 | ||
681 | btmrvl_interrupt(priv); | |
682 | } | |
683 | ||
684 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) | |
685 | { | |
686 | struct sdio_func *func; | |
687 | u8 reg; | |
688 | int ret = 0; | |
689 | ||
690 | if (!card || !card->func) { | |
691 | BT_ERR("Error: card or function is NULL!"); | |
692 | ret = -EINVAL; | |
693 | goto failed; | |
694 | } | |
695 | ||
696 | func = card->func; | |
697 | ||
698 | sdio_claim_host(func); | |
699 | ||
700 | ret = sdio_enable_func(func); | |
701 | if (ret) { | |
702 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); | |
703 | ret = -EIO; | |
704 | goto release_host; | |
705 | } | |
706 | ||
707 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); | |
708 | if (ret) { | |
709 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); | |
710 | ret = -EIO; | |
711 | goto disable_func; | |
712 | } | |
713 | ||
714 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); | |
715 | if (ret) { | |
716 | BT_ERR("cannot set SDIO block size"); | |
717 | ret = -EIO; | |
718 | goto release_irq; | |
719 | } | |
720 | ||
721 | reg = sdio_readb(func, card->reg->io_port_0, &ret); | |
722 | if (ret < 0) { | |
723 | ret = -EIO; | |
724 | goto release_irq; | |
725 | } | |
726 | ||
727 | card->ioport = reg; | |
728 | ||
729 | reg = sdio_readb(func, card->reg->io_port_1, &ret); | |
730 | if (ret < 0) { | |
731 | ret = -EIO; | |
732 | goto release_irq; | |
733 | } | |
734 | ||
735 | card->ioport |= (reg << 8); | |
736 | ||
737 | reg = sdio_readb(func, card->reg->io_port_2, &ret); | |
738 | if (ret < 0) { | |
739 | ret = -EIO; | |
740 | goto release_irq; | |
741 | } | |
742 | ||
743 | card->ioport |= (reg << 16); | |
744 | ||
745 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); | |
746 | ||
747 | sdio_set_drvdata(func, card); | |
748 | ||
749 | sdio_release_host(func); | |
750 | ||
751 | return 0; | |
752 | ||
753 | release_irq: | |
754 | sdio_release_irq(func); | |
755 | ||
756 | disable_func: | |
757 | sdio_disable_func(func); | |
758 | ||
759 | release_host: | |
760 | sdio_release_host(func); | |
761 | ||
762 | failed: | |
763 | return ret; | |
764 | } | |
765 | ||
766 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) | |
767 | { | |
768 | if (card && card->func) { | |
769 | sdio_claim_host(card->func); | |
770 | sdio_release_irq(card->func); | |
771 | sdio_disable_func(card->func); | |
772 | sdio_release_host(card->func); | |
773 | sdio_set_drvdata(card->func, NULL); | |
774 | } | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) | |
780 | { | |
781 | int ret; | |
782 | ||
783 | if (!card || !card->func) | |
784 | return -EINVAL; | |
785 | ||
786 | sdio_claim_host(card->func); | |
787 | ||
788 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); | |
789 | ||
790 | btmrvl_sdio_get_rx_unit(card); | |
791 | ||
792 | sdio_release_host(card->func); | |
793 | ||
794 | return ret; | |
795 | } | |
796 | ||
797 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) | |
798 | { | |
799 | int ret; | |
800 | ||
801 | if (!card || !card->func) | |
802 | return -EINVAL; | |
803 | ||
804 | sdio_claim_host(card->func); | |
805 | ||
806 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); | |
807 | ||
808 | sdio_release_host(card->func); | |
809 | ||
810 | return ret; | |
811 | } | |
812 | ||
813 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, | |
814 | u8 *payload, u16 nb) | |
815 | { | |
816 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
817 | int ret = 0; | |
818 | int buf_block_len; | |
819 | int blksz; | |
820 | int i = 0; | |
821 | u8 *buf = NULL; | |
822 | void *tmpbuf = NULL; | |
823 | int tmpbufsz; | |
824 | ||
825 | if (!card || !card->func) { | |
826 | BT_ERR("card or function is NULL!"); | |
827 | return -EINVAL; | |
828 | } | |
829 | ||
830 | buf = payload; | |
831 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { | |
832 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); | |
833 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); | |
834 | if (!tmpbuf) | |
835 | return -ENOMEM; | |
836 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); | |
837 | memcpy(buf, payload, nb); | |
838 | } | |
839 | ||
840 | blksz = SDIO_BLOCK_SIZE; | |
841 | buf_block_len = (nb + blksz - 1) / blksz; | |
842 | ||
843 | sdio_claim_host(card->func); | |
844 | ||
845 | do { | |
846 | /* Transfer data to card */ | |
847 | ret = sdio_writesb(card->func, card->ioport, buf, | |
848 | buf_block_len * blksz); | |
849 | if (ret < 0) { | |
850 | i++; | |
851 | BT_ERR("i=%d writesb failed: %d", i, ret); | |
852 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
853 | payload, nb); | |
854 | ret = -EIO; | |
855 | if (i > MAX_WRITE_IOMEM_RETRY) | |
856 | goto exit; | |
857 | } | |
858 | } while (ret); | |
859 | ||
860 | priv->btmrvl_dev.tx_dnld_rdy = false; | |
861 | ||
862 | exit: | |
863 | sdio_release_host(card->func); | |
864 | kfree(tmpbuf); | |
865 | ||
866 | return ret; | |
867 | } | |
868 | ||
869 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) | |
870 | { | |
871 | int ret = 0; | |
872 | u8 fws0; | |
873 | int pollnum = MAX_POLL_TRIES; | |
874 | ||
875 | if (!card || !card->func) { | |
876 | BT_ERR("card or function is NULL!"); | |
877 | return -EINVAL; | |
878 | } | |
879 | sdio_claim_host(card->func); | |
880 | ||
881 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { | |
882 | BT_DBG("Firmware already downloaded!"); | |
883 | goto done; | |
884 | } | |
885 | ||
886 | /* Check if other function driver is downloading the firmware */ | |
887 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); | |
888 | if (ret) { | |
889 | BT_ERR("Failed to read FW downloading status!"); | |
890 | ret = -EIO; | |
891 | goto done; | |
892 | } | |
893 | if (fws0) { | |
894 | BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); | |
895 | ||
896 | /* Give other function more time to download the firmware */ | |
897 | pollnum *= 10; | |
898 | } else { | |
899 | if (card->helper) { | |
900 | ret = btmrvl_sdio_download_helper(card); | |
901 | if (ret) { | |
902 | BT_ERR("Failed to download helper!"); | |
903 | ret = -EIO; | |
904 | goto done; | |
905 | } | |
906 | } | |
907 | ||
908 | if (btmrvl_sdio_download_fw_w_helper(card)) { | |
909 | BT_ERR("Failed to download firmware!"); | |
910 | ret = -EIO; | |
911 | goto done; | |
912 | } | |
913 | } | |
914 | ||
915 | if (btmrvl_sdio_verify_fw_download(card, pollnum)) { | |
916 | BT_ERR("FW failed to be active in time!"); | |
917 | ret = -ETIMEDOUT; | |
918 | goto done; | |
919 | } | |
920 | ||
921 | done: | |
922 | sdio_release_host(card->func); | |
923 | ||
924 | return ret; | |
925 | } | |
926 | ||
927 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) | |
928 | { | |
929 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
930 | int ret = 0; | |
931 | ||
932 | if (!card || !card->func) { | |
933 | BT_ERR("card or function is NULL!"); | |
934 | return -EINVAL; | |
935 | } | |
936 | ||
937 | sdio_claim_host(card->func); | |
938 | ||
939 | sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); | |
940 | ||
941 | sdio_release_host(card->func); | |
942 | ||
943 | BT_DBG("wake up firmware"); | |
944 | ||
945 | return ret; | |
946 | } | |
947 | ||
948 | static int btmrvl_sdio_probe(struct sdio_func *func, | |
949 | const struct sdio_device_id *id) | |
950 | { | |
951 | int ret = 0; | |
952 | struct btmrvl_private *priv = NULL; | |
953 | struct btmrvl_sdio_card *card = NULL; | |
954 | ||
955 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", | |
956 | id->vendor, id->device, id->class, func->num); | |
957 | ||
958 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
959 | if (!card) { | |
960 | ret = -ENOMEM; | |
961 | goto done; | |
962 | } | |
963 | ||
964 | card->func = func; | |
965 | ||
966 | if (id->driver_data) { | |
967 | struct btmrvl_sdio_device *data = (void *) id->driver_data; | |
968 | card->helper = data->helper; | |
969 | card->firmware = data->firmware; | |
970 | card->reg = data->reg; | |
971 | card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; | |
972 | } | |
973 | ||
974 | if (btmrvl_sdio_register_dev(card) < 0) { | |
975 | BT_ERR("Failed to register BT device!"); | |
976 | ret = -ENODEV; | |
977 | goto free_card; | |
978 | } | |
979 | ||
980 | /* Disable the interrupts on the card */ | |
981 | btmrvl_sdio_disable_host_int(card); | |
982 | ||
983 | if (btmrvl_sdio_download_fw(card)) { | |
984 | BT_ERR("Downloading firmware failed!"); | |
985 | ret = -ENODEV; | |
986 | goto unreg_dev; | |
987 | } | |
988 | ||
989 | msleep(100); | |
990 | ||
991 | btmrvl_sdio_enable_host_int(card); | |
992 | ||
993 | priv = btmrvl_add_card(card); | |
994 | if (!priv) { | |
995 | BT_ERR("Initializing card failed!"); | |
996 | ret = -ENODEV; | |
997 | goto disable_host_int; | |
998 | } | |
999 | ||
1000 | card->priv = priv; | |
1001 | ||
1002 | /* Initialize the interface specific function pointers */ | |
1003 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; | |
1004 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; | |
1005 | priv->hw_process_int_status = btmrvl_sdio_process_int_status; | |
1006 | ||
1007 | if (btmrvl_register_hdev(priv)) { | |
1008 | BT_ERR("Register hdev failed!"); | |
1009 | ret = -ENODEV; | |
1010 | goto disable_host_int; | |
1011 | } | |
1012 | ||
1013 | priv->btmrvl_dev.psmode = 1; | |
1014 | btmrvl_enable_ps(priv); | |
1015 | ||
1016 | return 0; | |
1017 | ||
1018 | disable_host_int: | |
1019 | btmrvl_sdio_disable_host_int(card); | |
1020 | unreg_dev: | |
1021 | btmrvl_sdio_unregister_dev(card); | |
1022 | free_card: | |
1023 | kfree(card); | |
1024 | done: | |
1025 | return ret; | |
1026 | } | |
1027 | ||
1028 | static void btmrvl_sdio_remove(struct sdio_func *func) | |
1029 | { | |
1030 | struct btmrvl_sdio_card *card; | |
1031 | ||
1032 | if (func) { | |
1033 | card = sdio_get_drvdata(func); | |
1034 | if (card) { | |
1035 | /* Send SHUTDOWN command & disable interrupt | |
1036 | * if user removes the module. | |
1037 | */ | |
1038 | if (user_rmmod) { | |
1039 | btmrvl_send_module_cfg_cmd(card->priv, | |
1040 | MODULE_SHUTDOWN_REQ); | |
1041 | btmrvl_sdio_disable_host_int(card); | |
1042 | } | |
1043 | BT_DBG("unregester dev"); | |
1044 | btmrvl_sdio_unregister_dev(card); | |
1045 | btmrvl_remove_card(card->priv); | |
1046 | kfree(card); | |
1047 | } | |
1048 | } | |
1049 | } | |
1050 | ||
1051 | static struct sdio_driver bt_mrvl_sdio = { | |
1052 | .name = "btmrvl_sdio", | |
1053 | .id_table = btmrvl_sdio_ids, | |
1054 | .probe = btmrvl_sdio_probe, | |
1055 | .remove = btmrvl_sdio_remove, | |
1056 | }; | |
1057 | ||
1058 | static int __init btmrvl_sdio_init_module(void) | |
1059 | { | |
1060 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { | |
1061 | BT_ERR("SDIO Driver Registration Failed"); | |
1062 | return -ENODEV; | |
1063 | } | |
1064 | ||
1065 | /* Clear the flag in case user removes the card. */ | |
1066 | user_rmmod = 0; | |
1067 | ||
1068 | return 0; | |
1069 | } | |
1070 | ||
1071 | static void __exit btmrvl_sdio_exit_module(void) | |
1072 | { | |
1073 | /* Set the flag as user is removing this module. */ | |
1074 | user_rmmod = 1; | |
1075 | ||
1076 | sdio_unregister_driver(&bt_mrvl_sdio); | |
1077 | } | |
1078 | ||
1079 | module_init(btmrvl_sdio_init_module); | |
1080 | module_exit(btmrvl_sdio_exit_module); | |
1081 | ||
1082 | MODULE_AUTHOR("Marvell International Ltd."); | |
1083 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); | |
1084 | MODULE_VERSION(VERSION); | |
1085 | MODULE_LICENSE("GPL v2"); | |
1086 | MODULE_FIRMWARE("sd8688_helper.bin"); | |
1087 | MODULE_FIRMWARE("sd8688.bin"); | |
1088 | MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); | |
1089 | MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin"); |