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789221ec BZ |
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> | |
5a0e3ad6 | 22 | #include <linux/slab.h> |
789221ec BZ |
23 | |
24 | #include <linux/mmc/sdio_ids.h> | |
25 | #include <linux/mmc/sdio_func.h> | |
26 | ||
27 | #include <net/bluetooth/bluetooth.h> | |
28 | #include <net/bluetooth/hci_core.h> | |
29 | ||
30 | #include "btmrvl_drv.h" | |
31 | #include "btmrvl_sdio.h" | |
32 | ||
33 | #define VERSION "1.0" | |
34 | ||
789221ec BZ |
35 | /* The btmrvl_sdio_remove() callback function is called |
36 | * when user removes this module from kernel space or ejects | |
37 | * the card from the slot. The driver handles these 2 cases | |
38 | * differently. | |
39 | * If the user is removing the module, a MODULE_SHUTDOWN_REQ | |
40 | * command is sent to firmware and interrupt will be disabled. | |
41 | * If the card is removed, there is no need to send command | |
42 | * or disable interrupt. | |
43 | * | |
44 | * The variable 'user_rmmod' is used to distinguish these two | |
45 | * scenarios. This flag is initialized as FALSE in case the card | |
46 | * is removed, and will be set to TRUE for module removal when | |
47 | * module_exit function is called. | |
48 | */ | |
49 | static u8 user_rmmod; | |
d1d10d78 | 50 | static u8 sdio_ireg; |
789221ec | 51 | |
9f72c1d9 KG |
52 | static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = { |
53 | .cfg = 0x03, | |
54 | .host_int_mask = 0x04, | |
55 | .host_intstatus = 0x05, | |
56 | .card_status = 0x20, | |
57 | .sq_read_base_addr_a0 = 0x10, | |
58 | .sq_read_base_addr_a1 = 0x11, | |
59 | .card_fw_status0 = 0x40, | |
60 | .card_fw_status1 = 0x41, | |
61 | .card_rx_len = 0x42, | |
62 | .card_rx_unit = 0x43, | |
63 | .io_port_0 = 0x00, | |
64 | .io_port_1 = 0x01, | |
65 | .io_port_2 = 0x02, | |
66 | }; | |
67 | static const struct btmrvl_sdio_card_reg btmrvl_reg_8787 = { | |
68 | .cfg = 0x00, | |
69 | .host_int_mask = 0x02, | |
70 | .host_intstatus = 0x03, | |
71 | .card_status = 0x30, | |
72 | .sq_read_base_addr_a0 = 0x40, | |
73 | .sq_read_base_addr_a1 = 0x41, | |
74 | .card_revision = 0x5c, | |
75 | .card_fw_status0 = 0x60, | |
76 | .card_fw_status1 = 0x61, | |
77 | .card_rx_len = 0x62, | |
78 | .card_rx_unit = 0x63, | |
79 | .io_port_0 = 0x78, | |
80 | .io_port_1 = 0x79, | |
81 | .io_port_2 = 0x7a, | |
82 | }; | |
83 | ||
c675786a | 84 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { |
dcf47f3b MH |
85 | .helper = "sd8688_helper.bin", |
86 | .firmware = "sd8688.bin", | |
9f72c1d9 KG |
87 | .reg = &btmrvl_reg_8688, |
88 | .sd_blksz_fw_dl = 64, | |
89 | }; | |
90 | ||
91 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { | |
92 | .helper = NULL, | |
93 | .firmware = "mrvl/sd8787_uapsta.bin", | |
94 | .reg = &btmrvl_reg_8787, | |
95 | .sd_blksz_fw_dl = 256, | |
789221ec BZ |
96 | }; |
97 | ||
dcf47f3b MH |
98 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
99 | /* Marvell SD8688 Bluetooth device */ | |
100 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), | |
c675786a | 101 | .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, |
9f72c1d9 KG |
102 | /* Marvell SD8787 Bluetooth device */ |
103 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), | |
104 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, | |
789221ec | 105 | |
dcf47f3b | 106 | { } /* Terminating entry */ |
789221ec BZ |
107 | }; |
108 | ||
dcf47f3b MH |
109 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
110 | ||
789221ec BZ |
111 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
112 | { | |
113 | u8 reg; | |
114 | int ret; | |
115 | ||
9f72c1d9 | 116 | reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); |
789221ec BZ |
117 | if (!ret) |
118 | card->rx_unit = reg; | |
119 | ||
789221ec BZ |
120 | return ret; |
121 | } | |
122 | ||
123 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) | |
124 | { | |
789221ec | 125 | u8 fws0, fws1; |
9374253f | 126 | int ret; |
789221ec BZ |
127 | |
128 | *dat = 0; | |
129 | ||
9f72c1d9 | 130 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); |
278be27f KV |
131 | if (ret) |
132 | return -EIO; | |
789221ec | 133 | |
9f72c1d9 | 134 | fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); |
9374253f | 135 | if (ret) |
789221ec | 136 | return -EIO; |
789221ec BZ |
137 | |
138 | *dat = (((u16) fws1) << 8) | fws0; | |
139 | ||
789221ec BZ |
140 | return 0; |
141 | } | |
142 | ||
143 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) | |
144 | { | |
789221ec | 145 | u8 reg; |
9374253f | 146 | int ret; |
789221ec | 147 | |
9f72c1d9 | 148 | reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); |
789221ec BZ |
149 | if (!ret) |
150 | *dat = (u16) reg << card->rx_unit; | |
151 | ||
789221ec BZ |
152 | return ret; |
153 | } | |
154 | ||
155 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 156 | u8 mask) |
789221ec BZ |
157 | { |
158 | int ret; | |
159 | ||
9f72c1d9 | 160 | sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); |
789221ec BZ |
161 | if (ret) { |
162 | BT_ERR("Unable to enable the host interrupt!"); | |
163 | ret = -EIO; | |
164 | } | |
165 | ||
789221ec BZ |
166 | return ret; |
167 | } | |
168 | ||
169 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 170 | u8 mask) |
789221ec | 171 | { |
789221ec | 172 | u8 host_int_mask; |
9374253f | 173 | int ret; |
789221ec | 174 | |
9f72c1d9 | 175 | host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); |
9374253f MH |
176 | if (ret) |
177 | return -EIO; | |
789221ec BZ |
178 | |
179 | host_int_mask &= ~mask; | |
180 | ||
9f72c1d9 | 181 | sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); |
789221ec BZ |
182 | if (ret < 0) { |
183 | BT_ERR("Unable to disable the host interrupt!"); | |
9374253f | 184 | return -EIO; |
789221ec BZ |
185 | } |
186 | ||
9374253f | 187 | return 0; |
789221ec BZ |
188 | } |
189 | ||
190 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) | |
191 | { | |
192 | unsigned int tries; | |
789221ec | 193 | u8 status; |
9374253f | 194 | int ret; |
789221ec BZ |
195 | |
196 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { | |
9f72c1d9 | 197 | status = sdio_readb(card->func, card->reg->card_status, &ret); |
789221ec BZ |
198 | if (ret) |
199 | goto failed; | |
200 | if ((status & bits) == bits) | |
9374253f | 201 | return ret; |
789221ec BZ |
202 | |
203 | udelay(1); | |
204 | } | |
205 | ||
206 | ret = -ETIMEDOUT; | |
207 | ||
208 | failed: | |
209 | BT_ERR("FAILED! ret=%d", ret); | |
210 | ||
789221ec BZ |
211 | return ret; |
212 | } | |
213 | ||
214 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, | |
dcf47f3b | 215 | int pollnum) |
789221ec BZ |
216 | { |
217 | int ret = -ETIMEDOUT; | |
218 | u16 firmwarestat; | |
219 | unsigned int tries; | |
220 | ||
789221ec BZ |
221 | /* Wait for firmware to become ready */ |
222 | for (tries = 0; tries < pollnum; tries++) { | |
223 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) | |
224 | continue; | |
225 | ||
226 | if (firmwarestat == FIRMWARE_READY) { | |
227 | ret = 0; | |
228 | break; | |
229 | } else { | |
230 | msleep(10); | |
231 | } | |
232 | } | |
233 | ||
789221ec BZ |
234 | return ret; |
235 | } | |
236 | ||
237 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) | |
238 | { | |
239 | const struct firmware *fw_helper = NULL; | |
240 | const u8 *helper = NULL; | |
241 | int ret; | |
242 | void *tmphlprbuf = NULL; | |
243 | int tmphlprbufsz, hlprblknow, helperlen; | |
244 | u8 *helperbuf; | |
245 | u32 tx_len; | |
246 | ||
789221ec | 247 | ret = request_firmware(&fw_helper, card->helper, |
dcf47f3b | 248 | &card->func->dev); |
789221ec BZ |
249 | if ((ret < 0) || !fw_helper) { |
250 | BT_ERR("request_firmware(helper) failed, error code = %d", | |
dcf47f3b | 251 | ret); |
789221ec BZ |
252 | ret = -ENOENT; |
253 | goto done; | |
254 | } | |
255 | ||
256 | helper = fw_helper->data; | |
257 | helperlen = fw_helper->size; | |
258 | ||
259 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", | |
dcf47f3b | 260 | helperlen, SDIO_BLOCK_SIZE); |
789221ec BZ |
261 | |
262 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
263 | ||
f8df39f1 | 264 | tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); |
789221ec BZ |
265 | if (!tmphlprbuf) { |
266 | BT_ERR("Unable to allocate buffer for helper." | |
267 | " Terminating download"); | |
268 | ret = -ENOMEM; | |
269 | goto done; | |
270 | } | |
271 | ||
789221ec BZ |
272 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); |
273 | ||
274 | /* Perform helper data transfer */ | |
275 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) | |
276 | - SDIO_HEADER_LEN; | |
277 | hlprblknow = 0; | |
278 | ||
279 | do { | |
280 | ret = btmrvl_sdio_poll_card_status(card, | |
281 | CARD_IO_READY | DN_LD_CARD_RDY); | |
282 | if (ret < 0) { | |
283 | BT_ERR("Helper download poll status timeout @ %d", | |
284 | hlprblknow); | |
285 | goto done; | |
286 | } | |
287 | ||
288 | /* Check if there is more data? */ | |
289 | if (hlprblknow >= helperlen) | |
290 | break; | |
291 | ||
292 | if (helperlen - hlprblknow < tx_len) | |
293 | tx_len = helperlen - hlprblknow; | |
294 | ||
295 | /* Little-endian */ | |
296 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); | |
297 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); | |
298 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); | |
299 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); | |
300 | ||
301 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], | |
302 | tx_len); | |
303 | ||
304 | /* Now send the data */ | |
dcf47f3b MH |
305 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
306 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); | |
789221ec BZ |
307 | if (ret < 0) { |
308 | BT_ERR("IO error during helper download @ %d", | |
309 | hlprblknow); | |
310 | goto done; | |
311 | } | |
312 | ||
313 | hlprblknow += tx_len; | |
314 | } while (true); | |
315 | ||
316 | BT_DBG("Transferring helper image EOF block"); | |
317 | ||
318 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); | |
319 | ||
320 | ret = sdio_writesb(card->func, card->ioport, helperbuf, | |
dcf47f3b | 321 | SDIO_BLOCK_SIZE); |
789221ec BZ |
322 | if (ret < 0) { |
323 | BT_ERR("IO error in writing helper image EOF block"); | |
324 | goto done; | |
325 | } | |
326 | ||
327 | ret = 0; | |
328 | ||
329 | done: | |
330 | kfree(tmphlprbuf); | |
331 | if (fw_helper) | |
332 | release_firmware(fw_helper); | |
333 | ||
789221ec BZ |
334 | return ret; |
335 | } | |
336 | ||
337 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) | |
338 | { | |
339 | const struct firmware *fw_firmware = NULL; | |
340 | const u8 *firmware = NULL; | |
341 | int firmwarelen, tmpfwbufsz, ret; | |
342 | unsigned int tries, offset; | |
343 | u8 base0, base1; | |
344 | void *tmpfwbuf = NULL; | |
345 | u8 *fwbuf; | |
9f72c1d9 | 346 | u16 len, blksz_dl = card->sd_blksz_fw_dl; |
789221ec BZ |
347 | int txlen = 0, tx_blocks = 0, count = 0; |
348 | ||
789221ec | 349 | ret = request_firmware(&fw_firmware, card->firmware, |
dcf47f3b | 350 | &card->func->dev); |
789221ec BZ |
351 | if ((ret < 0) || !fw_firmware) { |
352 | BT_ERR("request_firmware(firmware) failed, error code = %d", | |
dcf47f3b | 353 | ret); |
789221ec BZ |
354 | ret = -ENOENT; |
355 | goto done; | |
356 | } | |
357 | ||
358 | firmware = fw_firmware->data; | |
359 | firmwarelen = fw_firmware->size; | |
360 | ||
361 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); | |
362 | ||
363 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
f8df39f1 | 364 | tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); |
789221ec BZ |
365 | if (!tmpfwbuf) { |
366 | BT_ERR("Unable to allocate buffer for firmware." | |
367 | " Terminating download"); | |
368 | ret = -ENOMEM; | |
369 | goto done; | |
370 | } | |
371 | ||
789221ec BZ |
372 | /* Ensure aligned firmware buffer */ |
373 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); | |
374 | ||
375 | /* Perform firmware data transfer */ | |
376 | offset = 0; | |
377 | do { | |
378 | ret = btmrvl_sdio_poll_card_status(card, | |
dcf47f3b | 379 | CARD_IO_READY | DN_LD_CARD_RDY); |
789221ec BZ |
380 | if (ret < 0) { |
381 | BT_ERR("FW download with helper poll status" | |
dcf47f3b | 382 | " timeout @ %d", offset); |
789221ec BZ |
383 | goto done; |
384 | } | |
385 | ||
386 | /* Check if there is more data ? */ | |
387 | if (offset >= firmwarelen) | |
388 | break; | |
389 | ||
390 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
391 | base0 = sdio_readb(card->func, | |
9f72c1d9 | 392 | card->reg->sq_read_base_addr_a0, &ret); |
789221ec BZ |
393 | if (ret) { |
394 | BT_ERR("BASE0 register read failed:" | |
395 | " base0 = 0x%04X(%d)." | |
396 | " Terminating download", | |
397 | base0, base0); | |
398 | ret = -EIO; | |
399 | goto done; | |
400 | } | |
401 | base1 = sdio_readb(card->func, | |
9f72c1d9 | 402 | card->reg->sq_read_base_addr_a1, &ret); |
789221ec BZ |
403 | if (ret) { |
404 | BT_ERR("BASE1 register read failed:" | |
405 | " base1 = 0x%04X(%d)." | |
406 | " Terminating download", | |
407 | base1, base1); | |
408 | ret = -EIO; | |
409 | goto done; | |
410 | } | |
411 | ||
412 | len = (((u16) base1) << 8) | base0; | |
413 | if (len) | |
414 | break; | |
415 | ||
416 | udelay(10); | |
417 | } | |
418 | ||
419 | if (!len) | |
420 | break; | |
421 | else if (len > BTM_UPLD_SIZE) { | |
422 | BT_ERR("FW download failure @%d, invalid length %d", | |
dcf47f3b | 423 | offset, len); |
789221ec BZ |
424 | ret = -EINVAL; |
425 | goto done; | |
426 | } | |
427 | ||
428 | txlen = len; | |
429 | ||
430 | if (len & BIT(0)) { | |
431 | count++; | |
432 | if (count > MAX_WRITE_IOMEM_RETRY) { | |
433 | BT_ERR("FW download failure @%d, " | |
434 | "over max retry count", offset); | |
435 | ret = -EIO; | |
436 | goto done; | |
437 | } | |
438 | BT_ERR("FW CRC error indicated by the helper: " | |
439 | "len = 0x%04X, txlen = %d", len, txlen); | |
440 | len &= ~BIT(0); | |
441 | /* Set txlen to 0 so as to resend from same offset */ | |
442 | txlen = 0; | |
443 | } else { | |
444 | count = 0; | |
445 | ||
446 | /* Last block ? */ | |
447 | if (firmwarelen - offset < txlen) | |
448 | txlen = firmwarelen - offset; | |
449 | ||
9f72c1d9 | 450 | tx_blocks = (txlen + blksz_dl - 1) / blksz_dl; |
789221ec BZ |
451 | |
452 | memcpy(fwbuf, &firmware[offset], txlen); | |
453 | } | |
454 | ||
455 | ret = sdio_writesb(card->func, card->ioport, fwbuf, | |
9f72c1d9 | 456 | tx_blocks * blksz_dl); |
789221ec BZ |
457 | |
458 | if (ret < 0) { | |
459 | BT_ERR("FW download, writesb(%d) failed @%d", | |
dcf47f3b | 460 | count, offset); |
9f72c1d9 KG |
461 | sdio_writeb(card->func, HOST_CMD53_FIN, |
462 | card->reg->cfg, &ret); | |
789221ec BZ |
463 | if (ret) |
464 | BT_ERR("writeb failed (CFG)"); | |
465 | } | |
466 | ||
467 | offset += txlen; | |
468 | } while (true); | |
469 | ||
470 | BT_DBG("FW download over, size %d bytes", offset); | |
471 | ||
472 | ret = 0; | |
473 | ||
474 | done: | |
475 | kfree(tmpfwbuf); | |
476 | ||
477 | if (fw_firmware) | |
478 | release_firmware(fw_firmware); | |
479 | ||
789221ec BZ |
480 | return ret; |
481 | } | |
482 | ||
483 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) | |
484 | { | |
485 | u16 buf_len = 0; | |
486 | int ret, buf_block_len, blksz; | |
487 | struct sk_buff *skb = NULL; | |
488 | u32 type; | |
489 | u8 *payload = NULL; | |
490 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; | |
491 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
492 | ||
789221ec BZ |
493 | if (!card || !card->func) { |
494 | BT_ERR("card or function is NULL!"); | |
495 | ret = -EINVAL; | |
496 | goto exit; | |
497 | } | |
498 | ||
499 | /* Read the length of data to be transferred */ | |
500 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); | |
501 | if (ret < 0) { | |
502 | BT_ERR("read rx_len failed"); | |
503 | ret = -EIO; | |
504 | goto exit; | |
505 | } | |
506 | ||
507 | blksz = SDIO_BLOCK_SIZE; | |
508 | buf_block_len = (buf_len + blksz - 1) / blksz; | |
509 | ||
510 | if (buf_len <= SDIO_HEADER_LEN | |
dcf47f3b | 511 | || (buf_block_len * blksz) > ALLOC_BUF_SIZE) { |
789221ec BZ |
512 | BT_ERR("invalid packet length: %d", buf_len); |
513 | ret = -EINVAL; | |
514 | goto exit; | |
515 | } | |
516 | ||
517 | /* Allocate buffer */ | |
518 | skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN, | |
dcf47f3b | 519 | GFP_ATOMIC); |
789221ec BZ |
520 | if (skb == NULL) { |
521 | BT_ERR("No free skb"); | |
522 | goto exit; | |
523 | } | |
524 | ||
3318b236 BZ |
525 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
526 | skb_put(skb, (unsigned long) skb->data & | |
527 | (BTSDIO_DMA_ALIGN - 1)); | |
528 | skb_pull(skb, (unsigned long) skb->data & | |
529 | (BTSDIO_DMA_ALIGN - 1)); | |
789221ec BZ |
530 | } |
531 | ||
3318b236 | 532 | payload = skb->data; |
789221ec BZ |
533 | |
534 | ret = sdio_readsb(card->func, payload, card->ioport, | |
535 | buf_block_len * blksz); | |
536 | if (ret < 0) { | |
537 | BT_ERR("readsb failed: %d", ret); | |
538 | ret = -EIO; | |
539 | goto exit; | |
540 | } | |
541 | ||
542 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] | |
543 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) | |
544 | */ | |
545 | ||
546 | buf_len = payload[0]; | |
547 | buf_len |= (u16) payload[1] << 8; | |
548 | type = payload[3]; | |
549 | ||
550 | switch (type) { | |
551 | case HCI_ACLDATA_PKT: | |
552 | case HCI_SCODATA_PKT: | |
553 | case HCI_EVENT_PKT: | |
554 | bt_cb(skb)->pkt_type = type; | |
555 | skb->dev = (void *)hdev; | |
556 | skb_put(skb, buf_len); | |
557 | skb_pull(skb, SDIO_HEADER_LEN); | |
558 | ||
559 | if (type == HCI_EVENT_PKT) | |
560 | btmrvl_check_evtpkt(priv, skb); | |
561 | ||
562 | hci_recv_frame(skb); | |
563 | hdev->stat.byte_rx += buf_len; | |
564 | break; | |
565 | ||
566 | case MRVL_VENDOR_PKT: | |
567 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; | |
568 | skb->dev = (void *)hdev; | |
569 | skb_put(skb, buf_len); | |
570 | skb_pull(skb, SDIO_HEADER_LEN); | |
571 | ||
572 | if (btmrvl_process_event(priv, skb)) | |
573 | hci_recv_frame(skb); | |
574 | ||
575 | hdev->stat.byte_rx += buf_len; | |
576 | break; | |
577 | ||
578 | default: | |
af901ca1 | 579 | BT_ERR("Unknown packet type:%d", type); |
789221ec | 580 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload, |
dcf47f3b | 581 | blksz * buf_block_len); |
789221ec BZ |
582 | |
583 | kfree_skb(skb); | |
584 | skb = NULL; | |
585 | break; | |
586 | } | |
587 | ||
588 | exit: | |
589 | if (ret) { | |
590 | hdev->stat.err_rx++; | |
591 | if (skb) | |
592 | kfree_skb(skb); | |
593 | } | |
594 | ||
789221ec BZ |
595 | return ret; |
596 | } | |
597 | ||
d1d10d78 | 598 | static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) |
789221ec | 599 | { |
d1d10d78 AK |
600 | ulong flags; |
601 | u8 ireg; | |
789221ec BZ |
602 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
603 | ||
d1d10d78 AK |
604 | spin_lock_irqsave(&priv->driver_lock, flags); |
605 | ireg = sdio_ireg; | |
606 | sdio_ireg = 0; | |
607 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
789221ec | 608 | |
d1d10d78 AK |
609 | sdio_claim_host(card->func); |
610 | if (ireg & DN_LD_HOST_INT_STATUS) { | |
789221ec BZ |
611 | if (priv->btmrvl_dev.tx_dnld_rdy) |
612 | BT_DBG("tx_done already received: " | |
d1d10d78 | 613 | " int_status=0x%x", ireg); |
789221ec BZ |
614 | else |
615 | priv->btmrvl_dev.tx_dnld_rdy = true; | |
616 | } | |
617 | ||
d1d10d78 | 618 | if (ireg & UP_LD_HOST_INT_STATUS) |
789221ec BZ |
619 | btmrvl_sdio_card_to_host(priv); |
620 | ||
d1d10d78 | 621 | sdio_release_host(card->func); |
789221ec | 622 | |
d1d10d78 | 623 | return 0; |
789221ec BZ |
624 | } |
625 | ||
626 | static void btmrvl_sdio_interrupt(struct sdio_func *func) | |
627 | { | |
628 | struct btmrvl_private *priv; | |
789221ec | 629 | struct btmrvl_sdio_card *card; |
d1d10d78 | 630 | ulong flags; |
789221ec | 631 | u8 ireg = 0; |
d1d10d78 | 632 | int ret; |
789221ec | 633 | |
789221ec | 634 | card = sdio_get_drvdata(func); |
d1d10d78 AK |
635 | if (!card || !card->priv) { |
636 | BT_ERR("sbi_interrupt(%p) card or priv is " | |
637 | "NULL, card=%p\n", func, card); | |
638 | return; | |
639 | } | |
789221ec | 640 | |
d1d10d78 | 641 | priv = card->priv; |
789221ec | 642 | |
9f72c1d9 | 643 | ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); |
d1d10d78 AK |
644 | if (ret) { |
645 | BT_ERR("sdio_readb: read int status register failed"); | |
646 | return; | |
789221ec | 647 | } |
d1d10d78 AK |
648 | |
649 | if (ireg != 0) { | |
650 | /* | |
651 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
652 | * Clear the interrupt status register and re-enable the | |
653 | * interrupt. | |
654 | */ | |
655 | BT_DBG("ireg = 0x%x", ireg); | |
656 | ||
657 | sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | | |
658 | UP_LD_HOST_INT_STATUS), | |
9f72c1d9 | 659 | card->reg->host_intstatus, &ret); |
d1d10d78 AK |
660 | if (ret) { |
661 | BT_ERR("sdio_writeb: clear int status register failed"); | |
662 | return; | |
663 | } | |
664 | } | |
665 | ||
666 | spin_lock_irqsave(&priv->driver_lock, flags); | |
667 | sdio_ireg |= ireg; | |
668 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
669 | ||
670 | btmrvl_interrupt(priv); | |
789221ec BZ |
671 | } |
672 | ||
673 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) | |
674 | { | |
789221ec | 675 | struct sdio_func *func; |
dcf47f3b MH |
676 | u8 reg; |
677 | int ret = 0; | |
789221ec | 678 | |
789221ec BZ |
679 | if (!card || !card->func) { |
680 | BT_ERR("Error: card or function is NULL!"); | |
681 | ret = -EINVAL; | |
682 | goto failed; | |
683 | } | |
684 | ||
685 | func = card->func; | |
686 | ||
789221ec BZ |
687 | sdio_claim_host(func); |
688 | ||
689 | ret = sdio_enable_func(func); | |
690 | if (ret) { | |
691 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); | |
692 | ret = -EIO; | |
693 | goto release_host; | |
694 | } | |
695 | ||
696 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); | |
697 | if (ret) { | |
698 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); | |
699 | ret = -EIO; | |
700 | goto disable_func; | |
701 | } | |
702 | ||
703 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); | |
704 | if (ret) { | |
705 | BT_ERR("cannot set SDIO block size"); | |
706 | ret = -EIO; | |
707 | goto release_irq; | |
708 | } | |
709 | ||
9f72c1d9 | 710 | reg = sdio_readb(func, card->reg->io_port_0, &ret); |
789221ec BZ |
711 | if (ret < 0) { |
712 | ret = -EIO; | |
713 | goto release_irq; | |
714 | } | |
715 | ||
716 | card->ioport = reg; | |
717 | ||
9f72c1d9 | 718 | reg = sdio_readb(func, card->reg->io_port_1, &ret); |
789221ec BZ |
719 | if (ret < 0) { |
720 | ret = -EIO; | |
721 | goto release_irq; | |
722 | } | |
723 | ||
724 | card->ioport |= (reg << 8); | |
725 | ||
9f72c1d9 | 726 | reg = sdio_readb(func, card->reg->io_port_2, &ret); |
789221ec BZ |
727 | if (ret < 0) { |
728 | ret = -EIO; | |
729 | goto release_irq; | |
730 | } | |
731 | ||
732 | card->ioport |= (reg << 16); | |
733 | ||
734 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); | |
735 | ||
736 | sdio_set_drvdata(func, card); | |
737 | ||
738 | sdio_release_host(func); | |
739 | ||
789221ec BZ |
740 | return 0; |
741 | ||
742 | release_irq: | |
743 | sdio_release_irq(func); | |
744 | ||
745 | disable_func: | |
746 | sdio_disable_func(func); | |
747 | ||
748 | release_host: | |
749 | sdio_release_host(func); | |
750 | ||
751 | failed: | |
789221ec BZ |
752 | return ret; |
753 | } | |
754 | ||
755 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) | |
756 | { | |
789221ec BZ |
757 | if (card && card->func) { |
758 | sdio_claim_host(card->func); | |
759 | sdio_release_irq(card->func); | |
760 | sdio_disable_func(card->func); | |
761 | sdio_release_host(card->func); | |
762 | sdio_set_drvdata(card->func, NULL); | |
763 | } | |
764 | ||
789221ec BZ |
765 | return 0; |
766 | } | |
767 | ||
768 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) | |
769 | { | |
770 | int ret; | |
771 | ||
9374253f | 772 | if (!card || !card->func) |
789221ec | 773 | return -EINVAL; |
789221ec BZ |
774 | |
775 | sdio_claim_host(card->func); | |
776 | ||
777 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); | |
778 | ||
779 | btmrvl_sdio_get_rx_unit(card); | |
780 | ||
781 | sdio_release_host(card->func); | |
782 | ||
789221ec BZ |
783 | return ret; |
784 | } | |
785 | ||
786 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) | |
787 | { | |
788 | int ret; | |
789 | ||
9374253f | 790 | if (!card || !card->func) |
789221ec | 791 | return -EINVAL; |
789221ec BZ |
792 | |
793 | sdio_claim_host(card->func); | |
794 | ||
795 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); | |
796 | ||
797 | sdio_release_host(card->func); | |
798 | ||
789221ec BZ |
799 | return ret; |
800 | } | |
801 | ||
802 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, | |
803 | u8 *payload, u16 nb) | |
804 | { | |
805 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
806 | int ret = 0; | |
807 | int buf_block_len; | |
808 | int blksz; | |
809 | int i = 0; | |
810 | u8 *buf = NULL; | |
811 | void *tmpbuf = NULL; | |
812 | int tmpbufsz; | |
813 | ||
789221ec BZ |
814 | if (!card || !card->func) { |
815 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
816 | return -EINVAL; |
817 | } | |
818 | ||
819 | buf = payload; | |
3318b236 | 820 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
789221ec | 821 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
5959809d JL |
822 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
823 | if (!tmpbuf) | |
824 | return -ENOMEM; | |
789221ec BZ |
825 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
826 | memcpy(buf, payload, nb); | |
827 | } | |
828 | ||
829 | blksz = SDIO_BLOCK_SIZE; | |
830 | buf_block_len = (nb + blksz - 1) / blksz; | |
831 | ||
832 | sdio_claim_host(card->func); | |
833 | ||
834 | do { | |
835 | /* Transfer data to card */ | |
836 | ret = sdio_writesb(card->func, card->ioport, buf, | |
837 | buf_block_len * blksz); | |
838 | if (ret < 0) { | |
839 | i++; | |
840 | BT_ERR("i=%d writesb failed: %d", i, ret); | |
841 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
842 | payload, nb); | |
843 | ret = -EIO; | |
844 | if (i > MAX_WRITE_IOMEM_RETRY) | |
845 | goto exit; | |
846 | } | |
847 | } while (ret); | |
848 | ||
849 | priv->btmrvl_dev.tx_dnld_rdy = false; | |
850 | ||
851 | exit: | |
852 | sdio_release_host(card->func); | |
88d1a0cf | 853 | kfree(tmpbuf); |
789221ec | 854 | |
789221ec BZ |
855 | return ret; |
856 | } | |
857 | ||
858 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) | |
859 | { | |
860 | int ret = 0; | |
9f72c1d9 KG |
861 | u8 fws0; |
862 | int pollnum = MAX_POLL_TRIES; | |
789221ec | 863 | |
789221ec BZ |
864 | if (!card || !card->func) { |
865 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
866 | return -EINVAL; |
867 | } | |
868 | sdio_claim_host(card->func); | |
869 | ||
870 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { | |
871 | BT_DBG("Firmware already downloaded!"); | |
872 | goto done; | |
873 | } | |
874 | ||
9f72c1d9 KG |
875 | /* Check if other function driver is downloading the firmware */ |
876 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); | |
789221ec | 877 | if (ret) { |
9f72c1d9 | 878 | BT_ERR("Failed to read FW downloading status!"); |
789221ec BZ |
879 | ret = -EIO; |
880 | goto done; | |
881 | } | |
9f72c1d9 KG |
882 | if (fws0) { |
883 | BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); | |
884 | ||
885 | /* Give other function more time to download the firmware */ | |
886 | pollnum *= 10; | |
887 | } else { | |
888 | if (card->helper) { | |
889 | ret = btmrvl_sdio_download_helper(card); | |
890 | if (ret) { | |
891 | BT_ERR("Failed to download helper!"); | |
892 | ret = -EIO; | |
893 | goto done; | |
894 | } | |
895 | } | |
789221ec | 896 | |
9f72c1d9 KG |
897 | if (btmrvl_sdio_download_fw_w_helper(card)) { |
898 | BT_ERR("Failed to download firmware!"); | |
899 | ret = -EIO; | |
900 | goto done; | |
901 | } | |
789221ec BZ |
902 | } |
903 | ||
9f72c1d9 | 904 | if (btmrvl_sdio_verify_fw_download(card, pollnum)) { |
789221ec BZ |
905 | BT_ERR("FW failed to be active in time!"); |
906 | ret = -ETIMEDOUT; | |
907 | goto done; | |
908 | } | |
909 | ||
910 | done: | |
911 | sdio_release_host(card->func); | |
912 | ||
789221ec BZ |
913 | return ret; |
914 | } | |
915 | ||
916 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) | |
917 | { | |
918 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
919 | int ret = 0; | |
920 | ||
789221ec BZ |
921 | if (!card || !card->func) { |
922 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
923 | return -EINVAL; |
924 | } | |
925 | ||
926 | sdio_claim_host(card->func); | |
927 | ||
9f72c1d9 | 928 | sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); |
789221ec BZ |
929 | |
930 | sdio_release_host(card->func); | |
931 | ||
932 | BT_DBG("wake up firmware"); | |
933 | ||
789221ec BZ |
934 | return ret; |
935 | } | |
936 | ||
937 | static int btmrvl_sdio_probe(struct sdio_func *func, | |
dcf47f3b | 938 | const struct sdio_device_id *id) |
789221ec BZ |
939 | { |
940 | int ret = 0; | |
941 | struct btmrvl_private *priv = NULL; | |
942 | struct btmrvl_sdio_card *card = NULL; | |
943 | ||
789221ec BZ |
944 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", |
945 | id->vendor, id->device, id->class, func->num); | |
946 | ||
947 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
948 | if (!card) { | |
949 | ret = -ENOMEM; | |
950 | goto done; | |
951 | } | |
952 | ||
953 | card->func = func; | |
954 | ||
dcf47f3b MH |
955 | if (id->driver_data) { |
956 | struct btmrvl_sdio_device *data = (void *) id->driver_data; | |
9f72c1d9 | 957 | card->helper = data->helper; |
dcf47f3b | 958 | card->firmware = data->firmware; |
9f72c1d9 KG |
959 | card->reg = data->reg; |
960 | card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; | |
dcf47f3b MH |
961 | } |
962 | ||
789221ec BZ |
963 | if (btmrvl_sdio_register_dev(card) < 0) { |
964 | BT_ERR("Failed to register BT device!"); | |
965 | ret = -ENODEV; | |
966 | goto free_card; | |
967 | } | |
968 | ||
969 | /* Disable the interrupts on the card */ | |
970 | btmrvl_sdio_disable_host_int(card); | |
971 | ||
972 | if (btmrvl_sdio_download_fw(card)) { | |
973 | BT_ERR("Downloading firmware failed!"); | |
974 | ret = -ENODEV; | |
975 | goto unreg_dev; | |
976 | } | |
977 | ||
978 | msleep(100); | |
979 | ||
980 | btmrvl_sdio_enable_host_int(card); | |
981 | ||
982 | priv = btmrvl_add_card(card); | |
983 | if (!priv) { | |
984 | BT_ERR("Initializing card failed!"); | |
985 | ret = -ENODEV; | |
986 | goto disable_host_int; | |
987 | } | |
988 | ||
989 | card->priv = priv; | |
990 | ||
991 | /* Initialize the interface specific function pointers */ | |
992 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; | |
993 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; | |
d1d10d78 | 994 | priv->hw_process_int_status = btmrvl_sdio_process_int_status; |
789221ec | 995 | |
64061607 BZ |
996 | if (btmrvl_register_hdev(priv)) { |
997 | BT_ERR("Register hdev failed!"); | |
998 | ret = -ENODEV; | |
999 | goto disable_host_int; | |
1000 | } | |
1001 | ||
32fd6398 AK |
1002 | priv->btmrvl_dev.psmode = 1; |
1003 | btmrvl_enable_ps(priv); | |
789221ec | 1004 | |
789221ec BZ |
1005 | return 0; |
1006 | ||
1007 | disable_host_int: | |
1008 | btmrvl_sdio_disable_host_int(card); | |
1009 | unreg_dev: | |
1010 | btmrvl_sdio_unregister_dev(card); | |
1011 | free_card: | |
1012 | kfree(card); | |
1013 | done: | |
789221ec BZ |
1014 | return ret; |
1015 | } | |
1016 | ||
1017 | static void btmrvl_sdio_remove(struct sdio_func *func) | |
1018 | { | |
1019 | struct btmrvl_sdio_card *card; | |
1020 | ||
789221ec BZ |
1021 | if (func) { |
1022 | card = sdio_get_drvdata(func); | |
1023 | if (card) { | |
1024 | /* Send SHUTDOWN command & disable interrupt | |
1025 | * if user removes the module. | |
1026 | */ | |
1027 | if (user_rmmod) { | |
1028 | btmrvl_send_module_cfg_cmd(card->priv, | |
1029 | MODULE_SHUTDOWN_REQ); | |
1030 | btmrvl_sdio_disable_host_int(card); | |
1031 | } | |
1032 | BT_DBG("unregester dev"); | |
1033 | btmrvl_sdio_unregister_dev(card); | |
1034 | btmrvl_remove_card(card->priv); | |
1035 | kfree(card); | |
1036 | } | |
1037 | } | |
789221ec BZ |
1038 | } |
1039 | ||
1040 | static struct sdio_driver bt_mrvl_sdio = { | |
1041 | .name = "btmrvl_sdio", | |
1042 | .id_table = btmrvl_sdio_ids, | |
1043 | .probe = btmrvl_sdio_probe, | |
1044 | .remove = btmrvl_sdio_remove, | |
1045 | }; | |
1046 | ||
8e5b2308 | 1047 | static int __init btmrvl_sdio_init_module(void) |
789221ec | 1048 | { |
789221ec BZ |
1049 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
1050 | BT_ERR("SDIO Driver Registration Failed"); | |
789221ec BZ |
1051 | return -ENODEV; |
1052 | } | |
1053 | ||
1054 | /* Clear the flag in case user removes the card. */ | |
1055 | user_rmmod = 0; | |
1056 | ||
789221ec BZ |
1057 | return 0; |
1058 | } | |
1059 | ||
8e5b2308 | 1060 | static void __exit btmrvl_sdio_exit_module(void) |
789221ec | 1061 | { |
789221ec BZ |
1062 | /* Set the flag as user is removing this module. */ |
1063 | user_rmmod = 1; | |
1064 | ||
1065 | sdio_unregister_driver(&bt_mrvl_sdio); | |
789221ec BZ |
1066 | } |
1067 | ||
1068 | module_init(btmrvl_sdio_init_module); | |
1069 | module_exit(btmrvl_sdio_exit_module); | |
1070 | ||
1071 | MODULE_AUTHOR("Marvell International Ltd."); | |
9666fb35 | 1072 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
789221ec BZ |
1073 | MODULE_VERSION(VERSION); |
1074 | MODULE_LICENSE("GPL v2"); | |
2861453b BH |
1075 | MODULE_FIRMWARE("sd8688_helper.bin"); |
1076 | MODULE_FIRMWARE("sd8688.bin"); | |
9f72c1d9 | 1077 | MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); |