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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> | |
22 | ||
23 | #include <linux/mmc/sdio_ids.h> | |
24 | #include <linux/mmc/sdio_func.h> | |
25 | ||
26 | #include <net/bluetooth/bluetooth.h> | |
27 | #include <net/bluetooth/hci_core.h> | |
28 | ||
29 | #include "btmrvl_drv.h" | |
30 | #include "btmrvl_sdio.h" | |
31 | ||
32 | #define VERSION "1.0" | |
33 | ||
789221ec BZ |
34 | /* The btmrvl_sdio_remove() callback function is called |
35 | * when user removes this module from kernel space or ejects | |
36 | * the card from the slot. The driver handles these 2 cases | |
37 | * differently. | |
38 | * If the user is removing the module, a MODULE_SHUTDOWN_REQ | |
39 | * command is sent to firmware and interrupt will be disabled. | |
40 | * If the card is removed, there is no need to send command | |
41 | * or disable interrupt. | |
42 | * | |
43 | * The variable 'user_rmmod' is used to distinguish these two | |
44 | * scenarios. This flag is initialized as FALSE in case the card | |
45 | * is removed, and will be set to TRUE for module removal when | |
46 | * module_exit function is called. | |
47 | */ | |
48 | static u8 user_rmmod; | |
49 | ||
dcf47f3b MH |
50 | static const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = { |
51 | .helper = "sd8688_helper.bin", | |
52 | .firmware = "sd8688.bin", | |
789221ec BZ |
53 | }; |
54 | ||
dcf47f3b MH |
55 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
56 | /* Marvell SD8688 Bluetooth device */ | |
57 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), | |
58 | .driver_data = (unsigned long) &btmrvl_sdio_sd6888 }, | |
789221ec | 59 | |
dcf47f3b | 60 | { } /* Terminating entry */ |
789221ec BZ |
61 | }; |
62 | ||
dcf47f3b MH |
63 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
64 | ||
789221ec BZ |
65 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
66 | { | |
67 | u8 reg; | |
68 | int ret; | |
69 | ||
789221ec BZ |
70 | reg = sdio_readb(card->func, CARD_RX_UNIT_REG, &ret); |
71 | if (!ret) | |
72 | card->rx_unit = reg; | |
73 | ||
789221ec BZ |
74 | return ret; |
75 | } | |
76 | ||
77 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) | |
78 | { | |
789221ec | 79 | u8 fws0, fws1; |
9374253f | 80 | int ret; |
789221ec BZ |
81 | |
82 | *dat = 0; | |
83 | ||
84 | fws0 = sdio_readb(card->func, CARD_FW_STATUS0_REG, &ret); | |
85 | ||
86 | if (!ret) | |
87 | fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &ret); | |
88 | ||
9374253f | 89 | if (ret) |
789221ec | 90 | return -EIO; |
789221ec BZ |
91 | |
92 | *dat = (((u16) fws1) << 8) | fws0; | |
93 | ||
789221ec BZ |
94 | return 0; |
95 | } | |
96 | ||
97 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) | |
98 | { | |
789221ec | 99 | u8 reg; |
9374253f | 100 | int ret; |
789221ec BZ |
101 | |
102 | reg = sdio_readb(card->func, CARD_RX_LEN_REG, &ret); | |
103 | if (!ret) | |
104 | *dat = (u16) reg << card->rx_unit; | |
105 | ||
789221ec BZ |
106 | return ret; |
107 | } | |
108 | ||
109 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 110 | u8 mask) |
789221ec BZ |
111 | { |
112 | int ret; | |
113 | ||
789221ec BZ |
114 | sdio_writeb(card->func, mask, HOST_INT_MASK_REG, &ret); |
115 | if (ret) { | |
116 | BT_ERR("Unable to enable the host interrupt!"); | |
117 | ret = -EIO; | |
118 | } | |
119 | ||
789221ec BZ |
120 | return ret; |
121 | } | |
122 | ||
123 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 124 | u8 mask) |
789221ec | 125 | { |
789221ec | 126 | u8 host_int_mask; |
9374253f | 127 | int ret; |
789221ec BZ |
128 | |
129 | host_int_mask = sdio_readb(card->func, HOST_INT_MASK_REG, &ret); | |
9374253f MH |
130 | if (ret) |
131 | return -EIO; | |
789221ec BZ |
132 | |
133 | host_int_mask &= ~mask; | |
134 | ||
135 | sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &ret); | |
136 | if (ret < 0) { | |
137 | BT_ERR("Unable to disable the host interrupt!"); | |
9374253f | 138 | return -EIO; |
789221ec BZ |
139 | } |
140 | ||
9374253f | 141 | return 0; |
789221ec BZ |
142 | } |
143 | ||
144 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) | |
145 | { | |
146 | unsigned int tries; | |
789221ec | 147 | u8 status; |
9374253f | 148 | int ret; |
789221ec BZ |
149 | |
150 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { | |
151 | status = sdio_readb(card->func, CARD_STATUS_REG, &ret); | |
152 | if (ret) | |
153 | goto failed; | |
154 | if ((status & bits) == bits) | |
9374253f | 155 | return ret; |
789221ec BZ |
156 | |
157 | udelay(1); | |
158 | } | |
159 | ||
160 | ret = -ETIMEDOUT; | |
161 | ||
162 | failed: | |
163 | BT_ERR("FAILED! ret=%d", ret); | |
164 | ||
789221ec BZ |
165 | return ret; |
166 | } | |
167 | ||
168 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, | |
dcf47f3b | 169 | int pollnum) |
789221ec BZ |
170 | { |
171 | int ret = -ETIMEDOUT; | |
172 | u16 firmwarestat; | |
173 | unsigned int tries; | |
174 | ||
789221ec BZ |
175 | /* Wait for firmware to become ready */ |
176 | for (tries = 0; tries < pollnum; tries++) { | |
177 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) | |
178 | continue; | |
179 | ||
180 | if (firmwarestat == FIRMWARE_READY) { | |
181 | ret = 0; | |
182 | break; | |
183 | } else { | |
184 | msleep(10); | |
185 | } | |
186 | } | |
187 | ||
789221ec BZ |
188 | return ret; |
189 | } | |
190 | ||
191 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) | |
192 | { | |
193 | const struct firmware *fw_helper = NULL; | |
194 | const u8 *helper = NULL; | |
195 | int ret; | |
196 | void *tmphlprbuf = NULL; | |
197 | int tmphlprbufsz, hlprblknow, helperlen; | |
198 | u8 *helperbuf; | |
199 | u32 tx_len; | |
200 | ||
789221ec | 201 | ret = request_firmware(&fw_helper, card->helper, |
dcf47f3b | 202 | &card->func->dev); |
789221ec BZ |
203 | if ((ret < 0) || !fw_helper) { |
204 | BT_ERR("request_firmware(helper) failed, error code = %d", | |
dcf47f3b | 205 | ret); |
789221ec BZ |
206 | ret = -ENOENT; |
207 | goto done; | |
208 | } | |
209 | ||
210 | helper = fw_helper->data; | |
211 | helperlen = fw_helper->size; | |
212 | ||
213 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", | |
dcf47f3b | 214 | helperlen, SDIO_BLOCK_SIZE); |
789221ec BZ |
215 | |
216 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
217 | ||
218 | tmphlprbuf = kmalloc(tmphlprbufsz, GFP_KERNEL); | |
219 | if (!tmphlprbuf) { | |
220 | BT_ERR("Unable to allocate buffer for helper." | |
221 | " Terminating download"); | |
222 | ret = -ENOMEM; | |
223 | goto done; | |
224 | } | |
225 | ||
226 | memset(tmphlprbuf, 0, tmphlprbufsz); | |
227 | ||
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); | |
320 | tmpfwbuf = kmalloc(tmpfwbufsz, GFP_KERNEL); | |
321 | if (!tmpfwbuf) { | |
322 | BT_ERR("Unable to allocate buffer for firmware." | |
323 | " Terminating download"); | |
324 | ret = -ENOMEM; | |
325 | goto done; | |
326 | } | |
327 | ||
328 | memset(tmpfwbuf, 0, tmpfwbufsz); | |
329 | ||
330 | /* Ensure aligned firmware buffer */ | |
331 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); | |
332 | ||
333 | /* Perform firmware data transfer */ | |
334 | offset = 0; | |
335 | do { | |
336 | ret = btmrvl_sdio_poll_card_status(card, | |
dcf47f3b | 337 | CARD_IO_READY | DN_LD_CARD_RDY); |
789221ec BZ |
338 | if (ret < 0) { |
339 | BT_ERR("FW download with helper poll status" | |
dcf47f3b | 340 | " timeout @ %d", offset); |
789221ec BZ |
341 | goto done; |
342 | } | |
343 | ||
344 | /* Check if there is more data ? */ | |
345 | if (offset >= firmwarelen) | |
346 | break; | |
347 | ||
348 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
349 | base0 = sdio_readb(card->func, | |
350 | SQ_READ_BASE_ADDRESS_A0_REG, &ret); | |
351 | if (ret) { | |
352 | BT_ERR("BASE0 register read failed:" | |
353 | " base0 = 0x%04X(%d)." | |
354 | " Terminating download", | |
355 | base0, base0); | |
356 | ret = -EIO; | |
357 | goto done; | |
358 | } | |
359 | base1 = sdio_readb(card->func, | |
360 | SQ_READ_BASE_ADDRESS_A1_REG, &ret); | |
361 | if (ret) { | |
362 | BT_ERR("BASE1 register read failed:" | |
363 | " base1 = 0x%04X(%d)." | |
364 | " Terminating download", | |
365 | base1, base1); | |
366 | ret = -EIO; | |
367 | goto done; | |
368 | } | |
369 | ||
370 | len = (((u16) base1) << 8) | base0; | |
371 | if (len) | |
372 | break; | |
373 | ||
374 | udelay(10); | |
375 | } | |
376 | ||
377 | if (!len) | |
378 | break; | |
379 | else if (len > BTM_UPLD_SIZE) { | |
380 | BT_ERR("FW download failure @%d, invalid length %d", | |
dcf47f3b | 381 | offset, len); |
789221ec BZ |
382 | ret = -EINVAL; |
383 | goto done; | |
384 | } | |
385 | ||
386 | txlen = len; | |
387 | ||
388 | if (len & BIT(0)) { | |
389 | count++; | |
390 | if (count > MAX_WRITE_IOMEM_RETRY) { | |
391 | BT_ERR("FW download failure @%d, " | |
392 | "over max retry count", offset); | |
393 | ret = -EIO; | |
394 | goto done; | |
395 | } | |
396 | BT_ERR("FW CRC error indicated by the helper: " | |
397 | "len = 0x%04X, txlen = %d", len, txlen); | |
398 | len &= ~BIT(0); | |
399 | /* Set txlen to 0 so as to resend from same offset */ | |
400 | txlen = 0; | |
401 | } else { | |
402 | count = 0; | |
403 | ||
404 | /* Last block ? */ | |
405 | if (firmwarelen - offset < txlen) | |
406 | txlen = firmwarelen - offset; | |
407 | ||
408 | tx_blocks = | |
409 | (txlen + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE; | |
410 | ||
411 | memcpy(fwbuf, &firmware[offset], txlen); | |
412 | } | |
413 | ||
414 | ret = sdio_writesb(card->func, card->ioport, fwbuf, | |
415 | tx_blocks * SDIO_BLOCK_SIZE); | |
416 | ||
417 | if (ret < 0) { | |
418 | BT_ERR("FW download, writesb(%d) failed @%d", | |
dcf47f3b | 419 | count, offset); |
789221ec | 420 | sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG, |
dcf47f3b | 421 | &ret); |
789221ec BZ |
422 | if (ret) |
423 | BT_ERR("writeb failed (CFG)"); | |
424 | } | |
425 | ||
426 | offset += txlen; | |
427 | } while (true); | |
428 | ||
429 | BT_DBG("FW download over, size %d bytes", offset); | |
430 | ||
431 | ret = 0; | |
432 | ||
433 | done: | |
434 | kfree(tmpfwbuf); | |
435 | ||
436 | if (fw_firmware) | |
437 | release_firmware(fw_firmware); | |
438 | ||
789221ec BZ |
439 | return ret; |
440 | } | |
441 | ||
442 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) | |
443 | { | |
444 | u16 buf_len = 0; | |
445 | int ret, buf_block_len, blksz; | |
446 | struct sk_buff *skb = NULL; | |
447 | u32 type; | |
448 | u8 *payload = NULL; | |
449 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; | |
450 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
451 | ||
789221ec BZ |
452 | if (!card || !card->func) { |
453 | BT_ERR("card or function is NULL!"); | |
454 | ret = -EINVAL; | |
455 | goto exit; | |
456 | } | |
457 | ||
458 | /* Read the length of data to be transferred */ | |
459 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); | |
460 | if (ret < 0) { | |
461 | BT_ERR("read rx_len failed"); | |
462 | ret = -EIO; | |
463 | goto exit; | |
464 | } | |
465 | ||
466 | blksz = SDIO_BLOCK_SIZE; | |
467 | buf_block_len = (buf_len + blksz - 1) / blksz; | |
468 | ||
469 | if (buf_len <= SDIO_HEADER_LEN | |
dcf47f3b | 470 | || (buf_block_len * blksz) > ALLOC_BUF_SIZE) { |
789221ec BZ |
471 | BT_ERR("invalid packet length: %d", buf_len); |
472 | ret = -EINVAL; | |
473 | goto exit; | |
474 | } | |
475 | ||
476 | /* Allocate buffer */ | |
477 | skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN, | |
dcf47f3b | 478 | GFP_ATOMIC); |
789221ec BZ |
479 | if (skb == NULL) { |
480 | BT_ERR("No free skb"); | |
481 | goto exit; | |
482 | } | |
483 | ||
3318b236 BZ |
484 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
485 | skb_put(skb, (unsigned long) skb->data & | |
486 | (BTSDIO_DMA_ALIGN - 1)); | |
487 | skb_pull(skb, (unsigned long) skb->data & | |
488 | (BTSDIO_DMA_ALIGN - 1)); | |
789221ec BZ |
489 | } |
490 | ||
3318b236 | 491 | payload = skb->data; |
789221ec BZ |
492 | |
493 | ret = sdio_readsb(card->func, payload, card->ioport, | |
494 | buf_block_len * blksz); | |
495 | if (ret < 0) { | |
496 | BT_ERR("readsb failed: %d", ret); | |
497 | ret = -EIO; | |
498 | goto exit; | |
499 | } | |
500 | ||
501 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] | |
502 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) | |
503 | */ | |
504 | ||
505 | buf_len = payload[0]; | |
506 | buf_len |= (u16) payload[1] << 8; | |
507 | type = payload[3]; | |
508 | ||
509 | switch (type) { | |
510 | case HCI_ACLDATA_PKT: | |
511 | case HCI_SCODATA_PKT: | |
512 | case HCI_EVENT_PKT: | |
513 | bt_cb(skb)->pkt_type = type; | |
514 | skb->dev = (void *)hdev; | |
515 | skb_put(skb, buf_len); | |
516 | skb_pull(skb, SDIO_HEADER_LEN); | |
517 | ||
518 | if (type == HCI_EVENT_PKT) | |
519 | btmrvl_check_evtpkt(priv, skb); | |
520 | ||
521 | hci_recv_frame(skb); | |
522 | hdev->stat.byte_rx += buf_len; | |
523 | break; | |
524 | ||
525 | case MRVL_VENDOR_PKT: | |
526 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; | |
527 | skb->dev = (void *)hdev; | |
528 | skb_put(skb, buf_len); | |
529 | skb_pull(skb, SDIO_HEADER_LEN); | |
530 | ||
531 | if (btmrvl_process_event(priv, skb)) | |
532 | hci_recv_frame(skb); | |
533 | ||
534 | hdev->stat.byte_rx += buf_len; | |
535 | break; | |
536 | ||
537 | default: | |
af901ca1 | 538 | BT_ERR("Unknown packet type:%d", type); |
789221ec | 539 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload, |
dcf47f3b | 540 | blksz * buf_block_len); |
789221ec BZ |
541 | |
542 | kfree_skb(skb); | |
543 | skb = NULL; | |
544 | break; | |
545 | } | |
546 | ||
547 | exit: | |
548 | if (ret) { | |
549 | hdev->stat.err_rx++; | |
550 | if (skb) | |
551 | kfree_skb(skb); | |
552 | } | |
553 | ||
789221ec BZ |
554 | return ret; |
555 | } | |
556 | ||
557 | static int btmrvl_sdio_get_int_status(struct btmrvl_private *priv, u8 * ireg) | |
558 | { | |
559 | int ret; | |
560 | u8 sdio_ireg = 0; | |
561 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
562 | ||
789221ec BZ |
563 | *ireg = 0; |
564 | ||
565 | sdio_ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret); | |
566 | if (ret) { | |
567 | BT_ERR("sdio_readb: read int status register failed"); | |
568 | ret = -EIO; | |
569 | goto done; | |
570 | } | |
571 | ||
572 | if (sdio_ireg != 0) { | |
573 | /* | |
574 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
575 | * Clear the interrupt status register and re-enable the | |
576 | * interrupt. | |
577 | */ | |
578 | BT_DBG("sdio_ireg = 0x%x", sdio_ireg); | |
579 | ||
580 | sdio_writeb(card->func, ~(sdio_ireg) & (DN_LD_HOST_INT_STATUS | | |
581 | UP_LD_HOST_INT_STATUS), | |
582 | HOST_INTSTATUS_REG, &ret); | |
583 | if (ret) { | |
584 | BT_ERR("sdio_writeb: clear int status register " | |
585 | "failed"); | |
586 | ret = -EIO; | |
587 | goto done; | |
588 | } | |
589 | } | |
590 | ||
591 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
592 | if (priv->btmrvl_dev.tx_dnld_rdy) | |
593 | BT_DBG("tx_done already received: " | |
594 | " int_status=0x%x", sdio_ireg); | |
595 | else | |
596 | priv->btmrvl_dev.tx_dnld_rdy = true; | |
597 | } | |
598 | ||
599 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) | |
600 | btmrvl_sdio_card_to_host(priv); | |
601 | ||
602 | *ireg = sdio_ireg; | |
603 | ||
604 | ret = 0; | |
605 | ||
606 | done: | |
789221ec BZ |
607 | return ret; |
608 | } | |
609 | ||
610 | static void btmrvl_sdio_interrupt(struct sdio_func *func) | |
611 | { | |
612 | struct btmrvl_private *priv; | |
613 | struct hci_dev *hcidev; | |
614 | struct btmrvl_sdio_card *card; | |
615 | u8 ireg = 0; | |
616 | ||
789221ec BZ |
617 | card = sdio_get_drvdata(func); |
618 | if (card && card->priv) { | |
619 | priv = card->priv; | |
620 | hcidev = priv->btmrvl_dev.hcidev; | |
621 | ||
622 | if (btmrvl_sdio_get_int_status(priv, &ireg)) | |
623 | BT_ERR("reading HOST_INT_STATUS_REG failed"); | |
624 | else | |
625 | BT_DBG("HOST_INT_STATUS_REG %#x", ireg); | |
626 | ||
627 | btmrvl_interrupt(priv); | |
628 | } | |
789221ec BZ |
629 | } |
630 | ||
631 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) | |
632 | { | |
789221ec | 633 | struct sdio_func *func; |
dcf47f3b MH |
634 | u8 reg; |
635 | int ret = 0; | |
789221ec | 636 | |
789221ec BZ |
637 | if (!card || !card->func) { |
638 | BT_ERR("Error: card or function is NULL!"); | |
639 | ret = -EINVAL; | |
640 | goto failed; | |
641 | } | |
642 | ||
643 | func = card->func; | |
644 | ||
789221ec BZ |
645 | sdio_claim_host(func); |
646 | ||
647 | ret = sdio_enable_func(func); | |
648 | if (ret) { | |
649 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); | |
650 | ret = -EIO; | |
651 | goto release_host; | |
652 | } | |
653 | ||
654 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); | |
655 | if (ret) { | |
656 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); | |
657 | ret = -EIO; | |
658 | goto disable_func; | |
659 | } | |
660 | ||
661 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); | |
662 | if (ret) { | |
663 | BT_ERR("cannot set SDIO block size"); | |
664 | ret = -EIO; | |
665 | goto release_irq; | |
666 | } | |
667 | ||
668 | reg = sdio_readb(func, IO_PORT_0_REG, &ret); | |
669 | if (ret < 0) { | |
670 | ret = -EIO; | |
671 | goto release_irq; | |
672 | } | |
673 | ||
674 | card->ioport = reg; | |
675 | ||
676 | reg = sdio_readb(func, IO_PORT_1_REG, &ret); | |
677 | if (ret < 0) { | |
678 | ret = -EIO; | |
679 | goto release_irq; | |
680 | } | |
681 | ||
682 | card->ioport |= (reg << 8); | |
683 | ||
684 | reg = sdio_readb(func, IO_PORT_2_REG, &ret); | |
685 | if (ret < 0) { | |
686 | ret = -EIO; | |
687 | goto release_irq; | |
688 | } | |
689 | ||
690 | card->ioport |= (reg << 16); | |
691 | ||
692 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); | |
693 | ||
694 | sdio_set_drvdata(func, card); | |
695 | ||
696 | sdio_release_host(func); | |
697 | ||
789221ec BZ |
698 | return 0; |
699 | ||
700 | release_irq: | |
701 | sdio_release_irq(func); | |
702 | ||
703 | disable_func: | |
704 | sdio_disable_func(func); | |
705 | ||
706 | release_host: | |
707 | sdio_release_host(func); | |
708 | ||
709 | failed: | |
789221ec BZ |
710 | return ret; |
711 | } | |
712 | ||
713 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) | |
714 | { | |
789221ec BZ |
715 | if (card && card->func) { |
716 | sdio_claim_host(card->func); | |
717 | sdio_release_irq(card->func); | |
718 | sdio_disable_func(card->func); | |
719 | sdio_release_host(card->func); | |
720 | sdio_set_drvdata(card->func, NULL); | |
721 | } | |
722 | ||
789221ec BZ |
723 | return 0; |
724 | } | |
725 | ||
726 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) | |
727 | { | |
728 | int ret; | |
729 | ||
9374253f | 730 | if (!card || !card->func) |
789221ec | 731 | return -EINVAL; |
789221ec BZ |
732 | |
733 | sdio_claim_host(card->func); | |
734 | ||
735 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); | |
736 | ||
737 | btmrvl_sdio_get_rx_unit(card); | |
738 | ||
739 | sdio_release_host(card->func); | |
740 | ||
789221ec BZ |
741 | return ret; |
742 | } | |
743 | ||
744 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) | |
745 | { | |
746 | int ret; | |
747 | ||
9374253f | 748 | if (!card || !card->func) |
789221ec | 749 | return -EINVAL; |
789221ec BZ |
750 | |
751 | sdio_claim_host(card->func); | |
752 | ||
753 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); | |
754 | ||
755 | sdio_release_host(card->func); | |
756 | ||
789221ec BZ |
757 | return ret; |
758 | } | |
759 | ||
760 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, | |
761 | u8 *payload, u16 nb) | |
762 | { | |
763 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
764 | int ret = 0; | |
765 | int buf_block_len; | |
766 | int blksz; | |
767 | int i = 0; | |
768 | u8 *buf = NULL; | |
769 | void *tmpbuf = NULL; | |
770 | int tmpbufsz; | |
771 | ||
789221ec BZ |
772 | if (!card || !card->func) { |
773 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
774 | return -EINVAL; |
775 | } | |
776 | ||
777 | buf = payload; | |
3318b236 | 778 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
789221ec | 779 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
5959809d JL |
780 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
781 | if (!tmpbuf) | |
782 | return -ENOMEM; | |
789221ec BZ |
783 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
784 | memcpy(buf, payload, nb); | |
785 | } | |
786 | ||
787 | blksz = SDIO_BLOCK_SIZE; | |
788 | buf_block_len = (nb + blksz - 1) / blksz; | |
789 | ||
790 | sdio_claim_host(card->func); | |
791 | ||
792 | do { | |
793 | /* Transfer data to card */ | |
794 | ret = sdio_writesb(card->func, card->ioport, buf, | |
795 | buf_block_len * blksz); | |
796 | if (ret < 0) { | |
797 | i++; | |
798 | BT_ERR("i=%d writesb failed: %d", i, ret); | |
799 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
800 | payload, nb); | |
801 | ret = -EIO; | |
802 | if (i > MAX_WRITE_IOMEM_RETRY) | |
803 | goto exit; | |
804 | } | |
805 | } while (ret); | |
806 | ||
807 | priv->btmrvl_dev.tx_dnld_rdy = false; | |
808 | ||
809 | exit: | |
810 | sdio_release_host(card->func); | |
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; | |
931 | ||
789221ec | 932 | btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); |
32fd6398 AK |
933 | priv->btmrvl_dev.psmode = 1; |
934 | btmrvl_enable_ps(priv); | |
789221ec | 935 | |
789221ec BZ |
936 | return 0; |
937 | ||
938 | disable_host_int: | |
939 | btmrvl_sdio_disable_host_int(card); | |
940 | unreg_dev: | |
941 | btmrvl_sdio_unregister_dev(card); | |
942 | free_card: | |
943 | kfree(card); | |
944 | done: | |
789221ec BZ |
945 | return ret; |
946 | } | |
947 | ||
948 | static void btmrvl_sdio_remove(struct sdio_func *func) | |
949 | { | |
950 | struct btmrvl_sdio_card *card; | |
951 | ||
789221ec BZ |
952 | if (func) { |
953 | card = sdio_get_drvdata(func); | |
954 | if (card) { | |
955 | /* Send SHUTDOWN command & disable interrupt | |
956 | * if user removes the module. | |
957 | */ | |
958 | if (user_rmmod) { | |
959 | btmrvl_send_module_cfg_cmd(card->priv, | |
960 | MODULE_SHUTDOWN_REQ); | |
961 | btmrvl_sdio_disable_host_int(card); | |
962 | } | |
963 | BT_DBG("unregester dev"); | |
964 | btmrvl_sdio_unregister_dev(card); | |
965 | btmrvl_remove_card(card->priv); | |
966 | kfree(card); | |
967 | } | |
968 | } | |
789221ec BZ |
969 | } |
970 | ||
971 | static struct sdio_driver bt_mrvl_sdio = { | |
972 | .name = "btmrvl_sdio", | |
973 | .id_table = btmrvl_sdio_ids, | |
974 | .probe = btmrvl_sdio_probe, | |
975 | .remove = btmrvl_sdio_remove, | |
976 | }; | |
977 | ||
978 | static int btmrvl_sdio_init_module(void) | |
979 | { | |
789221ec BZ |
980 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
981 | BT_ERR("SDIO Driver Registration Failed"); | |
789221ec BZ |
982 | return -ENODEV; |
983 | } | |
984 | ||
985 | /* Clear the flag in case user removes the card. */ | |
986 | user_rmmod = 0; | |
987 | ||
789221ec BZ |
988 | return 0; |
989 | } | |
990 | ||
991 | static void btmrvl_sdio_exit_module(void) | |
992 | { | |
789221ec BZ |
993 | /* Set the flag as user is removing this module. */ |
994 | user_rmmod = 1; | |
995 | ||
996 | sdio_unregister_driver(&bt_mrvl_sdio); | |
789221ec BZ |
997 | } |
998 | ||
999 | module_init(btmrvl_sdio_init_module); | |
1000 | module_exit(btmrvl_sdio_exit_module); | |
1001 | ||
1002 | MODULE_AUTHOR("Marvell International Ltd."); | |
9666fb35 | 1003 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
789221ec BZ |
1004 | MODULE_VERSION(VERSION); |
1005 | MODULE_LICENSE("GPL v2"); | |
2861453b BH |
1006 | MODULE_FIRMWARE("sd8688_helper.bin"); |
1007 | MODULE_FIRMWARE("sd8688.bin"); |