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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 | |
dcf47f3b MH |
52 | static const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = { |
53 | .helper = "sd8688_helper.bin", | |
54 | .firmware = "sd8688.bin", | |
789221ec BZ |
55 | }; |
56 | ||
dcf47f3b MH |
57 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
58 | /* Marvell SD8688 Bluetooth device */ | |
59 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), | |
60 | .driver_data = (unsigned long) &btmrvl_sdio_sd6888 }, | |
789221ec | 61 | |
dcf47f3b | 62 | { } /* Terminating entry */ |
789221ec BZ |
63 | }; |
64 | ||
dcf47f3b MH |
65 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
66 | ||
789221ec BZ |
67 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
68 | { | |
69 | u8 reg; | |
70 | int ret; | |
71 | ||
789221ec BZ |
72 | reg = sdio_readb(card->func, CARD_RX_UNIT_REG, &ret); |
73 | if (!ret) | |
74 | card->rx_unit = reg; | |
75 | ||
789221ec BZ |
76 | return ret; |
77 | } | |
78 | ||
79 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) | |
80 | { | |
789221ec | 81 | u8 fws0, fws1; |
9374253f | 82 | int ret; |
789221ec BZ |
83 | |
84 | *dat = 0; | |
85 | ||
86 | fws0 = sdio_readb(card->func, CARD_FW_STATUS0_REG, &ret); | |
278be27f KV |
87 | if (ret) |
88 | return -EIO; | |
789221ec | 89 | |
278be27f | 90 | fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &ret); |
9374253f | 91 | if (ret) |
789221ec | 92 | return -EIO; |
789221ec BZ |
93 | |
94 | *dat = (((u16) fws1) << 8) | fws0; | |
95 | ||
789221ec BZ |
96 | return 0; |
97 | } | |
98 | ||
99 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) | |
100 | { | |
789221ec | 101 | u8 reg; |
9374253f | 102 | int ret; |
789221ec BZ |
103 | |
104 | reg = sdio_readb(card->func, CARD_RX_LEN_REG, &ret); | |
105 | if (!ret) | |
106 | *dat = (u16) reg << card->rx_unit; | |
107 | ||
789221ec BZ |
108 | return ret; |
109 | } | |
110 | ||
111 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 112 | u8 mask) |
789221ec BZ |
113 | { |
114 | int ret; | |
115 | ||
789221ec BZ |
116 | sdio_writeb(card->func, mask, HOST_INT_MASK_REG, &ret); |
117 | if (ret) { | |
118 | BT_ERR("Unable to enable the host interrupt!"); | |
119 | ret = -EIO; | |
120 | } | |
121 | ||
789221ec BZ |
122 | return ret; |
123 | } | |
124 | ||
125 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 126 | u8 mask) |
789221ec | 127 | { |
789221ec | 128 | u8 host_int_mask; |
9374253f | 129 | int ret; |
789221ec BZ |
130 | |
131 | host_int_mask = sdio_readb(card->func, HOST_INT_MASK_REG, &ret); | |
9374253f MH |
132 | if (ret) |
133 | return -EIO; | |
789221ec BZ |
134 | |
135 | host_int_mask &= ~mask; | |
136 | ||
137 | sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &ret); | |
138 | if (ret < 0) { | |
139 | BT_ERR("Unable to disable the host interrupt!"); | |
9374253f | 140 | return -EIO; |
789221ec BZ |
141 | } |
142 | ||
9374253f | 143 | return 0; |
789221ec BZ |
144 | } |
145 | ||
146 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) | |
147 | { | |
148 | unsigned int tries; | |
789221ec | 149 | u8 status; |
9374253f | 150 | int ret; |
789221ec BZ |
151 | |
152 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { | |
153 | status = sdio_readb(card->func, CARD_STATUS_REG, &ret); | |
154 | if (ret) | |
155 | goto failed; | |
156 | if ((status & bits) == bits) | |
9374253f | 157 | return ret; |
789221ec BZ |
158 | |
159 | udelay(1); | |
160 | } | |
161 | ||
162 | ret = -ETIMEDOUT; | |
163 | ||
164 | failed: | |
165 | BT_ERR("FAILED! ret=%d", ret); | |
166 | ||
789221ec BZ |
167 | return ret; |
168 | } | |
169 | ||
170 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, | |
dcf47f3b | 171 | int pollnum) |
789221ec BZ |
172 | { |
173 | int ret = -ETIMEDOUT; | |
174 | u16 firmwarestat; | |
175 | unsigned int tries; | |
176 | ||
789221ec BZ |
177 | /* Wait for firmware to become ready */ |
178 | for (tries = 0; tries < pollnum; tries++) { | |
179 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) | |
180 | continue; | |
181 | ||
182 | if (firmwarestat == FIRMWARE_READY) { | |
183 | ret = 0; | |
184 | break; | |
185 | } else { | |
186 | msleep(10); | |
187 | } | |
188 | } | |
189 | ||
789221ec BZ |
190 | return ret; |
191 | } | |
192 | ||
193 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) | |
194 | { | |
195 | const struct firmware *fw_helper = NULL; | |
196 | const u8 *helper = NULL; | |
197 | int ret; | |
198 | void *tmphlprbuf = NULL; | |
199 | int tmphlprbufsz, hlprblknow, helperlen; | |
200 | u8 *helperbuf; | |
201 | u32 tx_len; | |
202 | ||
789221ec | 203 | ret = request_firmware(&fw_helper, card->helper, |
dcf47f3b | 204 | &card->func->dev); |
789221ec BZ |
205 | if ((ret < 0) || !fw_helper) { |
206 | BT_ERR("request_firmware(helper) failed, error code = %d", | |
dcf47f3b | 207 | ret); |
789221ec BZ |
208 | ret = -ENOENT; |
209 | goto done; | |
210 | } | |
211 | ||
212 | helper = fw_helper->data; | |
213 | helperlen = fw_helper->size; | |
214 | ||
215 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", | |
dcf47f3b | 216 | helperlen, SDIO_BLOCK_SIZE); |
789221ec BZ |
217 | |
218 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
219 | ||
f8df39f1 | 220 | tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); |
789221ec BZ |
221 | if (!tmphlprbuf) { |
222 | BT_ERR("Unable to allocate buffer for helper." | |
223 | " Terminating download"); | |
224 | ret = -ENOMEM; | |
225 | goto done; | |
226 | } | |
227 | ||
789221ec BZ |
228 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); |
229 | ||
230 | /* Perform helper data transfer */ | |
231 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) | |
232 | - SDIO_HEADER_LEN; | |
233 | hlprblknow = 0; | |
234 | ||
235 | do { | |
236 | ret = btmrvl_sdio_poll_card_status(card, | |
237 | CARD_IO_READY | DN_LD_CARD_RDY); | |
238 | if (ret < 0) { | |
239 | BT_ERR("Helper download poll status timeout @ %d", | |
240 | hlprblknow); | |
241 | goto done; | |
242 | } | |
243 | ||
244 | /* Check if there is more data? */ | |
245 | if (hlprblknow >= helperlen) | |
246 | break; | |
247 | ||
248 | if (helperlen - hlprblknow < tx_len) | |
249 | tx_len = helperlen - hlprblknow; | |
250 | ||
251 | /* Little-endian */ | |
252 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); | |
253 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); | |
254 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); | |
255 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); | |
256 | ||
257 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], | |
258 | tx_len); | |
259 | ||
260 | /* Now send the data */ | |
dcf47f3b MH |
261 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
262 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); | |
789221ec BZ |
263 | if (ret < 0) { |
264 | BT_ERR("IO error during helper download @ %d", | |
265 | hlprblknow); | |
266 | goto done; | |
267 | } | |
268 | ||
269 | hlprblknow += tx_len; | |
270 | } while (true); | |
271 | ||
272 | BT_DBG("Transferring helper image EOF block"); | |
273 | ||
274 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); | |
275 | ||
276 | ret = sdio_writesb(card->func, card->ioport, helperbuf, | |
dcf47f3b | 277 | SDIO_BLOCK_SIZE); |
789221ec BZ |
278 | if (ret < 0) { |
279 | BT_ERR("IO error in writing helper image EOF block"); | |
280 | goto done; | |
281 | } | |
282 | ||
283 | ret = 0; | |
284 | ||
285 | done: | |
286 | kfree(tmphlprbuf); | |
287 | if (fw_helper) | |
288 | release_firmware(fw_helper); | |
289 | ||
789221ec BZ |
290 | return ret; |
291 | } | |
292 | ||
293 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) | |
294 | { | |
295 | const struct firmware *fw_firmware = NULL; | |
296 | const u8 *firmware = NULL; | |
297 | int firmwarelen, tmpfwbufsz, ret; | |
298 | unsigned int tries, offset; | |
299 | u8 base0, base1; | |
300 | void *tmpfwbuf = NULL; | |
301 | u8 *fwbuf; | |
302 | u16 len; | |
303 | int txlen = 0, tx_blocks = 0, count = 0; | |
304 | ||
789221ec | 305 | ret = request_firmware(&fw_firmware, card->firmware, |
dcf47f3b | 306 | &card->func->dev); |
789221ec BZ |
307 | if ((ret < 0) || !fw_firmware) { |
308 | BT_ERR("request_firmware(firmware) failed, error code = %d", | |
dcf47f3b | 309 | ret); |
789221ec BZ |
310 | ret = -ENOENT; |
311 | goto done; | |
312 | } | |
313 | ||
314 | firmware = fw_firmware->data; | |
315 | firmwarelen = fw_firmware->size; | |
316 | ||
317 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); | |
318 | ||
319 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
f8df39f1 | 320 | tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); |
789221ec BZ |
321 | if (!tmpfwbuf) { |
322 | BT_ERR("Unable to allocate buffer for firmware." | |
323 | " Terminating download"); | |
324 | ret = -ENOMEM; | |
325 | goto done; | |
326 | } | |
327 | ||
789221ec BZ |
328 | /* Ensure aligned firmware buffer */ |
329 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); | |
330 | ||
331 | /* Perform firmware data transfer */ | |
332 | offset = 0; | |
333 | do { | |
334 | ret = btmrvl_sdio_poll_card_status(card, | |
dcf47f3b | 335 | CARD_IO_READY | DN_LD_CARD_RDY); |
789221ec BZ |
336 | if (ret < 0) { |
337 | BT_ERR("FW download with helper poll status" | |
dcf47f3b | 338 | " timeout @ %d", offset); |
789221ec BZ |
339 | goto done; |
340 | } | |
341 | ||
342 | /* Check if there is more data ? */ | |
343 | if (offset >= firmwarelen) | |
344 | break; | |
345 | ||
346 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
347 | base0 = sdio_readb(card->func, | |
348 | SQ_READ_BASE_ADDRESS_A0_REG, &ret); | |
349 | if (ret) { | |
350 | BT_ERR("BASE0 register read failed:" | |
351 | " base0 = 0x%04X(%d)." | |
352 | " Terminating download", | |
353 | base0, base0); | |
354 | ret = -EIO; | |
355 | goto done; | |
356 | } | |
357 | base1 = sdio_readb(card->func, | |
358 | SQ_READ_BASE_ADDRESS_A1_REG, &ret); | |
359 | if (ret) { | |
360 | BT_ERR("BASE1 register read failed:" | |
361 | " base1 = 0x%04X(%d)." | |
362 | " Terminating download", | |
363 | base1, base1); | |
364 | ret = -EIO; | |
365 | goto done; | |
366 | } | |
367 | ||
368 | len = (((u16) base1) << 8) | base0; | |
369 | if (len) | |
370 | break; | |
371 | ||
372 | udelay(10); | |
373 | } | |
374 | ||
375 | if (!len) | |
376 | break; | |
377 | else if (len > BTM_UPLD_SIZE) { | |
378 | BT_ERR("FW download failure @%d, invalid length %d", | |
dcf47f3b | 379 | offset, len); |
789221ec BZ |
380 | ret = -EINVAL; |
381 | goto done; | |
382 | } | |
383 | ||
384 | txlen = len; | |
385 | ||
386 | if (len & BIT(0)) { | |
387 | count++; | |
388 | if (count > MAX_WRITE_IOMEM_RETRY) { | |
389 | BT_ERR("FW download failure @%d, " | |
390 | "over max retry count", offset); | |
391 | ret = -EIO; | |
392 | goto done; | |
393 | } | |
394 | BT_ERR("FW CRC error indicated by the helper: " | |
395 | "len = 0x%04X, txlen = %d", len, txlen); | |
396 | len &= ~BIT(0); | |
397 | /* Set txlen to 0 so as to resend from same offset */ | |
398 | txlen = 0; | |
399 | } else { | |
400 | count = 0; | |
401 | ||
402 | /* Last block ? */ | |
403 | if (firmwarelen - offset < txlen) | |
404 | txlen = firmwarelen - offset; | |
405 | ||
406 | tx_blocks = | |
407 | (txlen + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE; | |
408 | ||
409 | memcpy(fwbuf, &firmware[offset], txlen); | |
410 | } | |
411 | ||
412 | ret = sdio_writesb(card->func, card->ioport, fwbuf, | |
413 | tx_blocks * SDIO_BLOCK_SIZE); | |
414 | ||
415 | if (ret < 0) { | |
416 | BT_ERR("FW download, writesb(%d) failed @%d", | |
dcf47f3b | 417 | count, offset); |
789221ec | 418 | sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG, |
dcf47f3b | 419 | &ret); |
789221ec BZ |
420 | if (ret) |
421 | BT_ERR("writeb failed (CFG)"); | |
422 | } | |
423 | ||
424 | offset += txlen; | |
425 | } while (true); | |
426 | ||
427 | BT_DBG("FW download over, size %d bytes", offset); | |
428 | ||
429 | ret = 0; | |
430 | ||
431 | done: | |
432 | kfree(tmpfwbuf); | |
433 | ||
434 | if (fw_firmware) | |
435 | release_firmware(fw_firmware); | |
436 | ||
789221ec BZ |
437 | return ret; |
438 | } | |
439 | ||
440 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) | |
441 | { | |
442 | u16 buf_len = 0; | |
443 | int ret, buf_block_len, blksz; | |
444 | struct sk_buff *skb = NULL; | |
445 | u32 type; | |
446 | u8 *payload = NULL; | |
447 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; | |
448 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
449 | ||
789221ec BZ |
450 | if (!card || !card->func) { |
451 | BT_ERR("card or function is NULL!"); | |
452 | ret = -EINVAL; | |
453 | goto exit; | |
454 | } | |
455 | ||
456 | /* Read the length of data to be transferred */ | |
457 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); | |
458 | if (ret < 0) { | |
459 | BT_ERR("read rx_len failed"); | |
460 | ret = -EIO; | |
461 | goto exit; | |
462 | } | |
463 | ||
464 | blksz = SDIO_BLOCK_SIZE; | |
465 | buf_block_len = (buf_len + blksz - 1) / blksz; | |
466 | ||
467 | if (buf_len <= SDIO_HEADER_LEN | |
dcf47f3b | 468 | || (buf_block_len * blksz) > ALLOC_BUF_SIZE) { |
789221ec BZ |
469 | BT_ERR("invalid packet length: %d", buf_len); |
470 | ret = -EINVAL; | |
471 | goto exit; | |
472 | } | |
473 | ||
474 | /* Allocate buffer */ | |
475 | skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN, | |
dcf47f3b | 476 | GFP_ATOMIC); |
789221ec BZ |
477 | if (skb == NULL) { |
478 | BT_ERR("No free skb"); | |
479 | goto exit; | |
480 | } | |
481 | ||
3318b236 BZ |
482 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
483 | skb_put(skb, (unsigned long) skb->data & | |
484 | (BTSDIO_DMA_ALIGN - 1)); | |
485 | skb_pull(skb, (unsigned long) skb->data & | |
486 | (BTSDIO_DMA_ALIGN - 1)); | |
789221ec BZ |
487 | } |
488 | ||
3318b236 | 489 | payload = skb->data; |
789221ec BZ |
490 | |
491 | ret = sdio_readsb(card->func, payload, card->ioport, | |
492 | buf_block_len * blksz); | |
493 | if (ret < 0) { | |
494 | BT_ERR("readsb failed: %d", ret); | |
495 | ret = -EIO; | |
496 | goto exit; | |
497 | } | |
498 | ||
499 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] | |
500 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) | |
501 | */ | |
502 | ||
503 | buf_len = payload[0]; | |
504 | buf_len |= (u16) payload[1] << 8; | |
505 | type = payload[3]; | |
506 | ||
507 | switch (type) { | |
508 | case HCI_ACLDATA_PKT: | |
509 | case HCI_SCODATA_PKT: | |
510 | case HCI_EVENT_PKT: | |
511 | bt_cb(skb)->pkt_type = type; | |
512 | skb->dev = (void *)hdev; | |
513 | skb_put(skb, buf_len); | |
514 | skb_pull(skb, SDIO_HEADER_LEN); | |
515 | ||
516 | if (type == HCI_EVENT_PKT) | |
517 | btmrvl_check_evtpkt(priv, skb); | |
518 | ||
519 | hci_recv_frame(skb); | |
520 | hdev->stat.byte_rx += buf_len; | |
521 | break; | |
522 | ||
523 | case MRVL_VENDOR_PKT: | |
524 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; | |
525 | skb->dev = (void *)hdev; | |
526 | skb_put(skb, buf_len); | |
527 | skb_pull(skb, SDIO_HEADER_LEN); | |
528 | ||
529 | if (btmrvl_process_event(priv, skb)) | |
530 | hci_recv_frame(skb); | |
531 | ||
532 | hdev->stat.byte_rx += buf_len; | |
533 | break; | |
534 | ||
535 | default: | |
af901ca1 | 536 | BT_ERR("Unknown packet type:%d", type); |
789221ec | 537 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload, |
dcf47f3b | 538 | blksz * buf_block_len); |
789221ec BZ |
539 | |
540 | kfree_skb(skb); | |
541 | skb = NULL; | |
542 | break; | |
543 | } | |
544 | ||
545 | exit: | |
546 | if (ret) { | |
547 | hdev->stat.err_rx++; | |
548 | if (skb) | |
549 | kfree_skb(skb); | |
550 | } | |
551 | ||
789221ec BZ |
552 | return ret; |
553 | } | |
554 | ||
d1d10d78 | 555 | static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) |
789221ec | 556 | { |
d1d10d78 AK |
557 | ulong flags; |
558 | u8 ireg; | |
789221ec BZ |
559 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
560 | ||
d1d10d78 AK |
561 | spin_lock_irqsave(&priv->driver_lock, flags); |
562 | ireg = sdio_ireg; | |
563 | sdio_ireg = 0; | |
564 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
789221ec | 565 | |
d1d10d78 AK |
566 | sdio_claim_host(card->func); |
567 | if (ireg & DN_LD_HOST_INT_STATUS) { | |
789221ec BZ |
568 | if (priv->btmrvl_dev.tx_dnld_rdy) |
569 | BT_DBG("tx_done already received: " | |
d1d10d78 | 570 | " int_status=0x%x", ireg); |
789221ec BZ |
571 | else |
572 | priv->btmrvl_dev.tx_dnld_rdy = true; | |
573 | } | |
574 | ||
d1d10d78 | 575 | if (ireg & UP_LD_HOST_INT_STATUS) |
789221ec BZ |
576 | btmrvl_sdio_card_to_host(priv); |
577 | ||
d1d10d78 | 578 | sdio_release_host(card->func); |
789221ec | 579 | |
d1d10d78 | 580 | return 0; |
789221ec BZ |
581 | } |
582 | ||
583 | static void btmrvl_sdio_interrupt(struct sdio_func *func) | |
584 | { | |
585 | struct btmrvl_private *priv; | |
789221ec | 586 | struct btmrvl_sdio_card *card; |
d1d10d78 | 587 | ulong flags; |
789221ec | 588 | u8 ireg = 0; |
d1d10d78 | 589 | int ret; |
789221ec | 590 | |
789221ec | 591 | card = sdio_get_drvdata(func); |
d1d10d78 AK |
592 | if (!card || !card->priv) { |
593 | BT_ERR("sbi_interrupt(%p) card or priv is " | |
594 | "NULL, card=%p\n", func, card); | |
595 | return; | |
596 | } | |
789221ec | 597 | |
d1d10d78 | 598 | priv = card->priv; |
789221ec | 599 | |
d1d10d78 AK |
600 | ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret); |
601 | if (ret) { | |
602 | BT_ERR("sdio_readb: read int status register failed"); | |
603 | return; | |
789221ec | 604 | } |
d1d10d78 AK |
605 | |
606 | if (ireg != 0) { | |
607 | /* | |
608 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
609 | * Clear the interrupt status register and re-enable the | |
610 | * interrupt. | |
611 | */ | |
612 | BT_DBG("ireg = 0x%x", ireg); | |
613 | ||
614 | sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | | |
615 | UP_LD_HOST_INT_STATUS), | |
616 | HOST_INTSTATUS_REG, &ret); | |
617 | if (ret) { | |
618 | BT_ERR("sdio_writeb: clear int status register failed"); | |
619 | return; | |
620 | } | |
621 | } | |
622 | ||
623 | spin_lock_irqsave(&priv->driver_lock, flags); | |
624 | sdio_ireg |= ireg; | |
625 | spin_unlock_irqrestore(&priv->driver_lock, flags); | |
626 | ||
627 | btmrvl_interrupt(priv); | |
789221ec BZ |
628 | } |
629 | ||
630 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) | |
631 | { | |
789221ec | 632 | struct sdio_func *func; |
dcf47f3b MH |
633 | u8 reg; |
634 | int ret = 0; | |
789221ec | 635 | |
789221ec BZ |
636 | if (!card || !card->func) { |
637 | BT_ERR("Error: card or function is NULL!"); | |
638 | ret = -EINVAL; | |
639 | goto failed; | |
640 | } | |
641 | ||
642 | func = card->func; | |
643 | ||
789221ec BZ |
644 | sdio_claim_host(func); |
645 | ||
646 | ret = sdio_enable_func(func); | |
647 | if (ret) { | |
648 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); | |
649 | ret = -EIO; | |
650 | goto release_host; | |
651 | } | |
652 | ||
653 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); | |
654 | if (ret) { | |
655 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); | |
656 | ret = -EIO; | |
657 | goto disable_func; | |
658 | } | |
659 | ||
660 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); | |
661 | if (ret) { | |
662 | BT_ERR("cannot set SDIO block size"); | |
663 | ret = -EIO; | |
664 | goto release_irq; | |
665 | } | |
666 | ||
667 | reg = sdio_readb(func, IO_PORT_0_REG, &ret); | |
668 | if (ret < 0) { | |
669 | ret = -EIO; | |
670 | goto release_irq; | |
671 | } | |
672 | ||
673 | card->ioport = reg; | |
674 | ||
675 | reg = sdio_readb(func, IO_PORT_1_REG, &ret); | |
676 | if (ret < 0) { | |
677 | ret = -EIO; | |
678 | goto release_irq; | |
679 | } | |
680 | ||
681 | card->ioport |= (reg << 8); | |
682 | ||
683 | reg = sdio_readb(func, IO_PORT_2_REG, &ret); | |
684 | if (ret < 0) { | |
685 | ret = -EIO; | |
686 | goto release_irq; | |
687 | } | |
688 | ||
689 | card->ioport |= (reg << 16); | |
690 | ||
691 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); | |
692 | ||
693 | sdio_set_drvdata(func, card); | |
694 | ||
695 | sdio_release_host(func); | |
696 | ||
789221ec BZ |
697 | return 0; |
698 | ||
699 | release_irq: | |
700 | sdio_release_irq(func); | |
701 | ||
702 | disable_func: | |
703 | sdio_disable_func(func); | |
704 | ||
705 | release_host: | |
706 | sdio_release_host(func); | |
707 | ||
708 | failed: | |
789221ec BZ |
709 | return ret; |
710 | } | |
711 | ||
712 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) | |
713 | { | |
789221ec BZ |
714 | if (card && card->func) { |
715 | sdio_claim_host(card->func); | |
716 | sdio_release_irq(card->func); | |
717 | sdio_disable_func(card->func); | |
718 | sdio_release_host(card->func); | |
719 | sdio_set_drvdata(card->func, NULL); | |
720 | } | |
721 | ||
789221ec BZ |
722 | return 0; |
723 | } | |
724 | ||
725 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) | |
726 | { | |
727 | int ret; | |
728 | ||
9374253f | 729 | if (!card || !card->func) |
789221ec | 730 | return -EINVAL; |
789221ec BZ |
731 | |
732 | sdio_claim_host(card->func); | |
733 | ||
734 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); | |
735 | ||
736 | btmrvl_sdio_get_rx_unit(card); | |
737 | ||
738 | sdio_release_host(card->func); | |
739 | ||
789221ec BZ |
740 | return ret; |
741 | } | |
742 | ||
743 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) | |
744 | { | |
745 | int ret; | |
746 | ||
9374253f | 747 | if (!card || !card->func) |
789221ec | 748 | return -EINVAL; |
789221ec BZ |
749 | |
750 | sdio_claim_host(card->func); | |
751 | ||
752 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); | |
753 | ||
754 | sdio_release_host(card->func); | |
755 | ||
789221ec BZ |
756 | return ret; |
757 | } | |
758 | ||
759 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, | |
760 | u8 *payload, u16 nb) | |
761 | { | |
762 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
763 | int ret = 0; | |
764 | int buf_block_len; | |
765 | int blksz; | |
766 | int i = 0; | |
767 | u8 *buf = NULL; | |
768 | void *tmpbuf = NULL; | |
769 | int tmpbufsz; | |
770 | ||
789221ec BZ |
771 | if (!card || !card->func) { |
772 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
773 | return -EINVAL; |
774 | } | |
775 | ||
776 | buf = payload; | |
3318b236 | 777 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
789221ec | 778 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
5959809d JL |
779 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
780 | if (!tmpbuf) | |
781 | return -ENOMEM; | |
789221ec BZ |
782 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
783 | memcpy(buf, payload, nb); | |
784 | } | |
785 | ||
786 | blksz = SDIO_BLOCK_SIZE; | |
787 | buf_block_len = (nb + blksz - 1) / blksz; | |
788 | ||
789 | sdio_claim_host(card->func); | |
790 | ||
791 | do { | |
792 | /* Transfer data to card */ | |
793 | ret = sdio_writesb(card->func, card->ioport, buf, | |
794 | buf_block_len * blksz); | |
795 | if (ret < 0) { | |
796 | i++; | |
797 | BT_ERR("i=%d writesb failed: %d", i, ret); | |
798 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
799 | payload, nb); | |
800 | ret = -EIO; | |
801 | if (i > MAX_WRITE_IOMEM_RETRY) | |
802 | goto exit; | |
803 | } | |
804 | } while (ret); | |
805 | ||
806 | priv->btmrvl_dev.tx_dnld_rdy = false; | |
807 | ||
808 | exit: | |
809 | sdio_release_host(card->func); | |
88d1a0cf | 810 | kfree(tmpbuf); |
789221ec | 811 | |
789221ec BZ |
812 | return ret; |
813 | } | |
814 | ||
815 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) | |
816 | { | |
817 | int ret = 0; | |
818 | ||
789221ec BZ |
819 | if (!card || !card->func) { |
820 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
821 | return -EINVAL; |
822 | } | |
823 | sdio_claim_host(card->func); | |
824 | ||
825 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { | |
826 | BT_DBG("Firmware already downloaded!"); | |
827 | goto done; | |
828 | } | |
829 | ||
830 | ret = btmrvl_sdio_download_helper(card); | |
831 | if (ret) { | |
832 | BT_ERR("Failed to download helper!"); | |
833 | ret = -EIO; | |
834 | goto done; | |
835 | } | |
836 | ||
837 | if (btmrvl_sdio_download_fw_w_helper(card)) { | |
838 | BT_ERR("Failed to download firmware!"); | |
839 | ret = -EIO; | |
840 | goto done; | |
841 | } | |
842 | ||
843 | if (btmrvl_sdio_verify_fw_download(card, MAX_POLL_TRIES)) { | |
844 | BT_ERR("FW failed to be active in time!"); | |
845 | ret = -ETIMEDOUT; | |
846 | goto done; | |
847 | } | |
848 | ||
849 | done: | |
850 | sdio_release_host(card->func); | |
851 | ||
789221ec BZ |
852 | return ret; |
853 | } | |
854 | ||
855 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) | |
856 | { | |
857 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
858 | int ret = 0; | |
859 | ||
789221ec BZ |
860 | if (!card || !card->func) { |
861 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
862 | return -EINVAL; |
863 | } | |
864 | ||
865 | sdio_claim_host(card->func); | |
866 | ||
867 | sdio_writeb(card->func, HOST_POWER_UP, CONFIG_REG, &ret); | |
868 | ||
869 | sdio_release_host(card->func); | |
870 | ||
871 | BT_DBG("wake up firmware"); | |
872 | ||
789221ec BZ |
873 | return ret; |
874 | } | |
875 | ||
876 | static int btmrvl_sdio_probe(struct sdio_func *func, | |
dcf47f3b | 877 | const struct sdio_device_id *id) |
789221ec BZ |
878 | { |
879 | int ret = 0; | |
880 | struct btmrvl_private *priv = NULL; | |
881 | struct btmrvl_sdio_card *card = NULL; | |
882 | ||
789221ec BZ |
883 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", |
884 | id->vendor, id->device, id->class, func->num); | |
885 | ||
886 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
887 | if (!card) { | |
888 | ret = -ENOMEM; | |
889 | goto done; | |
890 | } | |
891 | ||
892 | card->func = func; | |
893 | ||
dcf47f3b MH |
894 | if (id->driver_data) { |
895 | struct btmrvl_sdio_device *data = (void *) id->driver_data; | |
896 | card->helper = data->helper; | |
897 | card->firmware = data->firmware; | |
898 | } | |
899 | ||
789221ec BZ |
900 | if (btmrvl_sdio_register_dev(card) < 0) { |
901 | BT_ERR("Failed to register BT device!"); | |
902 | ret = -ENODEV; | |
903 | goto free_card; | |
904 | } | |
905 | ||
906 | /* Disable the interrupts on the card */ | |
907 | btmrvl_sdio_disable_host_int(card); | |
908 | ||
909 | if (btmrvl_sdio_download_fw(card)) { | |
910 | BT_ERR("Downloading firmware failed!"); | |
911 | ret = -ENODEV; | |
912 | goto unreg_dev; | |
913 | } | |
914 | ||
915 | msleep(100); | |
916 | ||
917 | btmrvl_sdio_enable_host_int(card); | |
918 | ||
919 | priv = btmrvl_add_card(card); | |
920 | if (!priv) { | |
921 | BT_ERR("Initializing card failed!"); | |
922 | ret = -ENODEV; | |
923 | goto disable_host_int; | |
924 | } | |
925 | ||
926 | card->priv = priv; | |
927 | ||
928 | /* Initialize the interface specific function pointers */ | |
929 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; | |
930 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; | |
d1d10d78 | 931 | priv->hw_process_int_status = btmrvl_sdio_process_int_status; |
789221ec | 932 | |
64061607 BZ |
933 | if (btmrvl_register_hdev(priv)) { |
934 | BT_ERR("Register hdev failed!"); | |
935 | ret = -ENODEV; | |
936 | goto disable_host_int; | |
937 | } | |
938 | ||
32fd6398 AK |
939 | priv->btmrvl_dev.psmode = 1; |
940 | btmrvl_enable_ps(priv); | |
789221ec | 941 | |
789221ec BZ |
942 | return 0; |
943 | ||
944 | disable_host_int: | |
945 | btmrvl_sdio_disable_host_int(card); | |
946 | unreg_dev: | |
947 | btmrvl_sdio_unregister_dev(card); | |
948 | free_card: | |
949 | kfree(card); | |
950 | done: | |
789221ec BZ |
951 | return ret; |
952 | } | |
953 | ||
954 | static void btmrvl_sdio_remove(struct sdio_func *func) | |
955 | { | |
956 | struct btmrvl_sdio_card *card; | |
957 | ||
789221ec BZ |
958 | if (func) { |
959 | card = sdio_get_drvdata(func); | |
960 | if (card) { | |
961 | /* Send SHUTDOWN command & disable interrupt | |
962 | * if user removes the module. | |
963 | */ | |
964 | if (user_rmmod) { | |
965 | btmrvl_send_module_cfg_cmd(card->priv, | |
966 | MODULE_SHUTDOWN_REQ); | |
967 | btmrvl_sdio_disable_host_int(card); | |
968 | } | |
969 | BT_DBG("unregester dev"); | |
970 | btmrvl_sdio_unregister_dev(card); | |
971 | btmrvl_remove_card(card->priv); | |
972 | kfree(card); | |
973 | } | |
974 | } | |
789221ec BZ |
975 | } |
976 | ||
977 | static struct sdio_driver bt_mrvl_sdio = { | |
978 | .name = "btmrvl_sdio", | |
979 | .id_table = btmrvl_sdio_ids, | |
980 | .probe = btmrvl_sdio_probe, | |
981 | .remove = btmrvl_sdio_remove, | |
982 | }; | |
983 | ||
8e5b2308 | 984 | static int __init btmrvl_sdio_init_module(void) |
789221ec | 985 | { |
789221ec BZ |
986 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
987 | BT_ERR("SDIO Driver Registration Failed"); | |
789221ec BZ |
988 | return -ENODEV; |
989 | } | |
990 | ||
991 | /* Clear the flag in case user removes the card. */ | |
992 | user_rmmod = 0; | |
993 | ||
789221ec BZ |
994 | return 0; |
995 | } | |
996 | ||
8e5b2308 | 997 | static void __exit btmrvl_sdio_exit_module(void) |
789221ec | 998 | { |
789221ec BZ |
999 | /* Set the flag as user is removing this module. */ |
1000 | user_rmmod = 1; | |
1001 | ||
1002 | sdio_unregister_driver(&bt_mrvl_sdio); | |
789221ec BZ |
1003 | } |
1004 | ||
1005 | module_init(btmrvl_sdio_init_module); | |
1006 | module_exit(btmrvl_sdio_exit_module); | |
1007 | ||
1008 | MODULE_AUTHOR("Marvell International Ltd."); | |
9666fb35 | 1009 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
789221ec BZ |
1010 | MODULE_VERSION(VERSION); |
1011 | MODULE_LICENSE("GPL v2"); | |
2861453b BH |
1012 | MODULE_FIRMWARE("sd8688_helper.bin"); |
1013 | MODULE_FIRMWARE("sd8688.bin"); |