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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; | |
50 | ||
dcf47f3b MH |
51 | static const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = { |
52 | .helper = "sd8688_helper.bin", | |
53 | .firmware = "sd8688.bin", | |
789221ec BZ |
54 | }; |
55 | ||
dcf47f3b MH |
56 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
57 | /* Marvell SD8688 Bluetooth device */ | |
58 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), | |
59 | .driver_data = (unsigned long) &btmrvl_sdio_sd6888 }, | |
789221ec | 60 | |
dcf47f3b | 61 | { } /* Terminating entry */ |
789221ec BZ |
62 | }; |
63 | ||
dcf47f3b MH |
64 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
65 | ||
789221ec BZ |
66 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
67 | { | |
68 | u8 reg; | |
69 | int ret; | |
70 | ||
789221ec BZ |
71 | reg = sdio_readb(card->func, CARD_RX_UNIT_REG, &ret); |
72 | if (!ret) | |
73 | card->rx_unit = reg; | |
74 | ||
789221ec BZ |
75 | return ret; |
76 | } | |
77 | ||
78 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) | |
79 | { | |
789221ec | 80 | u8 fws0, fws1; |
9374253f | 81 | int ret; |
789221ec BZ |
82 | |
83 | *dat = 0; | |
84 | ||
85 | fws0 = sdio_readb(card->func, CARD_FW_STATUS0_REG, &ret); | |
86 | ||
87 | if (!ret) | |
88 | fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &ret); | |
89 | ||
9374253f | 90 | if (ret) |
789221ec | 91 | return -EIO; |
789221ec BZ |
92 | |
93 | *dat = (((u16) fws1) << 8) | fws0; | |
94 | ||
789221ec BZ |
95 | return 0; |
96 | } | |
97 | ||
98 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) | |
99 | { | |
789221ec | 100 | u8 reg; |
9374253f | 101 | int ret; |
789221ec BZ |
102 | |
103 | reg = sdio_readb(card->func, CARD_RX_LEN_REG, &ret); | |
104 | if (!ret) | |
105 | *dat = (u16) reg << card->rx_unit; | |
106 | ||
789221ec BZ |
107 | return ret; |
108 | } | |
109 | ||
110 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 111 | u8 mask) |
789221ec BZ |
112 | { |
113 | int ret; | |
114 | ||
789221ec BZ |
115 | sdio_writeb(card->func, mask, HOST_INT_MASK_REG, &ret); |
116 | if (ret) { | |
117 | BT_ERR("Unable to enable the host interrupt!"); | |
118 | ret = -EIO; | |
119 | } | |
120 | ||
789221ec BZ |
121 | return ret; |
122 | } | |
123 | ||
124 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, | |
dcf47f3b | 125 | u8 mask) |
789221ec | 126 | { |
789221ec | 127 | u8 host_int_mask; |
9374253f | 128 | int ret; |
789221ec BZ |
129 | |
130 | host_int_mask = sdio_readb(card->func, HOST_INT_MASK_REG, &ret); | |
9374253f MH |
131 | if (ret) |
132 | return -EIO; | |
789221ec BZ |
133 | |
134 | host_int_mask &= ~mask; | |
135 | ||
136 | sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &ret); | |
137 | if (ret < 0) { | |
138 | BT_ERR("Unable to disable the host interrupt!"); | |
9374253f | 139 | return -EIO; |
789221ec BZ |
140 | } |
141 | ||
9374253f | 142 | return 0; |
789221ec BZ |
143 | } |
144 | ||
145 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) | |
146 | { | |
147 | unsigned int tries; | |
789221ec | 148 | u8 status; |
9374253f | 149 | int ret; |
789221ec BZ |
150 | |
151 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { | |
152 | status = sdio_readb(card->func, CARD_STATUS_REG, &ret); | |
153 | if (ret) | |
154 | goto failed; | |
155 | if ((status & bits) == bits) | |
9374253f | 156 | return ret; |
789221ec BZ |
157 | |
158 | udelay(1); | |
159 | } | |
160 | ||
161 | ret = -ETIMEDOUT; | |
162 | ||
163 | failed: | |
164 | BT_ERR("FAILED! ret=%d", ret); | |
165 | ||
789221ec BZ |
166 | return ret; |
167 | } | |
168 | ||
169 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, | |
dcf47f3b | 170 | int pollnum) |
789221ec BZ |
171 | { |
172 | int ret = -ETIMEDOUT; | |
173 | u16 firmwarestat; | |
174 | unsigned int tries; | |
175 | ||
789221ec BZ |
176 | /* Wait for firmware to become ready */ |
177 | for (tries = 0; tries < pollnum; tries++) { | |
178 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) | |
179 | continue; | |
180 | ||
181 | if (firmwarestat == FIRMWARE_READY) { | |
182 | ret = 0; | |
183 | break; | |
184 | } else { | |
185 | msleep(10); | |
186 | } | |
187 | } | |
188 | ||
789221ec BZ |
189 | return ret; |
190 | } | |
191 | ||
192 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) | |
193 | { | |
194 | const struct firmware *fw_helper = NULL; | |
195 | const u8 *helper = NULL; | |
196 | int ret; | |
197 | void *tmphlprbuf = NULL; | |
198 | int tmphlprbufsz, hlprblknow, helperlen; | |
199 | u8 *helperbuf; | |
200 | u32 tx_len; | |
201 | ||
789221ec | 202 | ret = request_firmware(&fw_helper, card->helper, |
dcf47f3b | 203 | &card->func->dev); |
789221ec BZ |
204 | if ((ret < 0) || !fw_helper) { |
205 | BT_ERR("request_firmware(helper) failed, error code = %d", | |
dcf47f3b | 206 | ret); |
789221ec BZ |
207 | ret = -ENOENT; |
208 | goto done; | |
209 | } | |
210 | ||
211 | helper = fw_helper->data; | |
212 | helperlen = fw_helper->size; | |
213 | ||
214 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", | |
dcf47f3b | 215 | helperlen, SDIO_BLOCK_SIZE); |
789221ec BZ |
216 | |
217 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
218 | ||
219 | tmphlprbuf = kmalloc(tmphlprbufsz, GFP_KERNEL); | |
220 | if (!tmphlprbuf) { | |
221 | BT_ERR("Unable to allocate buffer for helper." | |
222 | " Terminating download"); | |
223 | ret = -ENOMEM; | |
224 | goto done; | |
225 | } | |
226 | ||
227 | memset(tmphlprbuf, 0, tmphlprbufsz); | |
228 | ||
229 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); | |
230 | ||
231 | /* Perform helper data transfer */ | |
232 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) | |
233 | - SDIO_HEADER_LEN; | |
234 | hlprblknow = 0; | |
235 | ||
236 | do { | |
237 | ret = btmrvl_sdio_poll_card_status(card, | |
238 | CARD_IO_READY | DN_LD_CARD_RDY); | |
239 | if (ret < 0) { | |
240 | BT_ERR("Helper download poll status timeout @ %d", | |
241 | hlprblknow); | |
242 | goto done; | |
243 | } | |
244 | ||
245 | /* Check if there is more data? */ | |
246 | if (hlprblknow >= helperlen) | |
247 | break; | |
248 | ||
249 | if (helperlen - hlprblknow < tx_len) | |
250 | tx_len = helperlen - hlprblknow; | |
251 | ||
252 | /* Little-endian */ | |
253 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); | |
254 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); | |
255 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); | |
256 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); | |
257 | ||
258 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], | |
259 | tx_len); | |
260 | ||
261 | /* Now send the data */ | |
dcf47f3b MH |
262 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
263 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); | |
789221ec BZ |
264 | if (ret < 0) { |
265 | BT_ERR("IO error during helper download @ %d", | |
266 | hlprblknow); | |
267 | goto done; | |
268 | } | |
269 | ||
270 | hlprblknow += tx_len; | |
271 | } while (true); | |
272 | ||
273 | BT_DBG("Transferring helper image EOF block"); | |
274 | ||
275 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); | |
276 | ||
277 | ret = sdio_writesb(card->func, card->ioport, helperbuf, | |
dcf47f3b | 278 | SDIO_BLOCK_SIZE); |
789221ec BZ |
279 | if (ret < 0) { |
280 | BT_ERR("IO error in writing helper image EOF block"); | |
281 | goto done; | |
282 | } | |
283 | ||
284 | ret = 0; | |
285 | ||
286 | done: | |
287 | kfree(tmphlprbuf); | |
288 | if (fw_helper) | |
289 | release_firmware(fw_helper); | |
290 | ||
789221ec BZ |
291 | return ret; |
292 | } | |
293 | ||
294 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) | |
295 | { | |
296 | const struct firmware *fw_firmware = NULL; | |
297 | const u8 *firmware = NULL; | |
298 | int firmwarelen, tmpfwbufsz, ret; | |
299 | unsigned int tries, offset; | |
300 | u8 base0, base1; | |
301 | void *tmpfwbuf = NULL; | |
302 | u8 *fwbuf; | |
303 | u16 len; | |
304 | int txlen = 0, tx_blocks = 0, count = 0; | |
305 | ||
789221ec | 306 | ret = request_firmware(&fw_firmware, card->firmware, |
dcf47f3b | 307 | &card->func->dev); |
789221ec BZ |
308 | if ((ret < 0) || !fw_firmware) { |
309 | BT_ERR("request_firmware(firmware) failed, error code = %d", | |
dcf47f3b | 310 | ret); |
789221ec BZ |
311 | ret = -ENOENT; |
312 | goto done; | |
313 | } | |
314 | ||
315 | firmware = fw_firmware->data; | |
316 | firmwarelen = fw_firmware->size; | |
317 | ||
318 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); | |
319 | ||
320 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); | |
321 | tmpfwbuf = kmalloc(tmpfwbufsz, GFP_KERNEL); | |
322 | if (!tmpfwbuf) { | |
323 | BT_ERR("Unable to allocate buffer for firmware." | |
324 | " Terminating download"); | |
325 | ret = -ENOMEM; | |
326 | goto done; | |
327 | } | |
328 | ||
329 | memset(tmpfwbuf, 0, tmpfwbufsz); | |
330 | ||
331 | /* Ensure aligned firmware buffer */ | |
332 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); | |
333 | ||
334 | /* Perform firmware data transfer */ | |
335 | offset = 0; | |
336 | do { | |
337 | ret = btmrvl_sdio_poll_card_status(card, | |
dcf47f3b | 338 | CARD_IO_READY | DN_LD_CARD_RDY); |
789221ec BZ |
339 | if (ret < 0) { |
340 | BT_ERR("FW download with helper poll status" | |
dcf47f3b | 341 | " timeout @ %d", offset); |
789221ec BZ |
342 | goto done; |
343 | } | |
344 | ||
345 | /* Check if there is more data ? */ | |
346 | if (offset >= firmwarelen) | |
347 | break; | |
348 | ||
349 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { | |
350 | base0 = sdio_readb(card->func, | |
351 | SQ_READ_BASE_ADDRESS_A0_REG, &ret); | |
352 | if (ret) { | |
353 | BT_ERR("BASE0 register read failed:" | |
354 | " base0 = 0x%04X(%d)." | |
355 | " Terminating download", | |
356 | base0, base0); | |
357 | ret = -EIO; | |
358 | goto done; | |
359 | } | |
360 | base1 = sdio_readb(card->func, | |
361 | SQ_READ_BASE_ADDRESS_A1_REG, &ret); | |
362 | if (ret) { | |
363 | BT_ERR("BASE1 register read failed:" | |
364 | " base1 = 0x%04X(%d)." | |
365 | " Terminating download", | |
366 | base1, base1); | |
367 | ret = -EIO; | |
368 | goto done; | |
369 | } | |
370 | ||
371 | len = (((u16) base1) << 8) | base0; | |
372 | if (len) | |
373 | break; | |
374 | ||
375 | udelay(10); | |
376 | } | |
377 | ||
378 | if (!len) | |
379 | break; | |
380 | else if (len > BTM_UPLD_SIZE) { | |
381 | BT_ERR("FW download failure @%d, invalid length %d", | |
dcf47f3b | 382 | offset, len); |
789221ec BZ |
383 | ret = -EINVAL; |
384 | goto done; | |
385 | } | |
386 | ||
387 | txlen = len; | |
388 | ||
389 | if (len & BIT(0)) { | |
390 | count++; | |
391 | if (count > MAX_WRITE_IOMEM_RETRY) { | |
392 | BT_ERR("FW download failure @%d, " | |
393 | "over max retry count", offset); | |
394 | ret = -EIO; | |
395 | goto done; | |
396 | } | |
397 | BT_ERR("FW CRC error indicated by the helper: " | |
398 | "len = 0x%04X, txlen = %d", len, txlen); | |
399 | len &= ~BIT(0); | |
400 | /* Set txlen to 0 so as to resend from same offset */ | |
401 | txlen = 0; | |
402 | } else { | |
403 | count = 0; | |
404 | ||
405 | /* Last block ? */ | |
406 | if (firmwarelen - offset < txlen) | |
407 | txlen = firmwarelen - offset; | |
408 | ||
409 | tx_blocks = | |
410 | (txlen + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE; | |
411 | ||
412 | memcpy(fwbuf, &firmware[offset], txlen); | |
413 | } | |
414 | ||
415 | ret = sdio_writesb(card->func, card->ioport, fwbuf, | |
416 | tx_blocks * SDIO_BLOCK_SIZE); | |
417 | ||
418 | if (ret < 0) { | |
419 | BT_ERR("FW download, writesb(%d) failed @%d", | |
dcf47f3b | 420 | count, offset); |
789221ec | 421 | sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG, |
dcf47f3b | 422 | &ret); |
789221ec BZ |
423 | if (ret) |
424 | BT_ERR("writeb failed (CFG)"); | |
425 | } | |
426 | ||
427 | offset += txlen; | |
428 | } while (true); | |
429 | ||
430 | BT_DBG("FW download over, size %d bytes", offset); | |
431 | ||
432 | ret = 0; | |
433 | ||
434 | done: | |
435 | kfree(tmpfwbuf); | |
436 | ||
437 | if (fw_firmware) | |
438 | release_firmware(fw_firmware); | |
439 | ||
789221ec BZ |
440 | return ret; |
441 | } | |
442 | ||
443 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) | |
444 | { | |
445 | u16 buf_len = 0; | |
446 | int ret, buf_block_len, blksz; | |
447 | struct sk_buff *skb = NULL; | |
448 | u32 type; | |
449 | u8 *payload = NULL; | |
450 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; | |
451 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
452 | ||
789221ec BZ |
453 | if (!card || !card->func) { |
454 | BT_ERR("card or function is NULL!"); | |
455 | ret = -EINVAL; | |
456 | goto exit; | |
457 | } | |
458 | ||
459 | /* Read the length of data to be transferred */ | |
460 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); | |
461 | if (ret < 0) { | |
462 | BT_ERR("read rx_len failed"); | |
463 | ret = -EIO; | |
464 | goto exit; | |
465 | } | |
466 | ||
467 | blksz = SDIO_BLOCK_SIZE; | |
468 | buf_block_len = (buf_len + blksz - 1) / blksz; | |
469 | ||
470 | if (buf_len <= SDIO_HEADER_LEN | |
dcf47f3b | 471 | || (buf_block_len * blksz) > ALLOC_BUF_SIZE) { |
789221ec BZ |
472 | BT_ERR("invalid packet length: %d", buf_len); |
473 | ret = -EINVAL; | |
474 | goto exit; | |
475 | } | |
476 | ||
477 | /* Allocate buffer */ | |
478 | skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN, | |
dcf47f3b | 479 | GFP_ATOMIC); |
789221ec BZ |
480 | if (skb == NULL) { |
481 | BT_ERR("No free skb"); | |
482 | goto exit; | |
483 | } | |
484 | ||
3318b236 BZ |
485 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
486 | skb_put(skb, (unsigned long) skb->data & | |
487 | (BTSDIO_DMA_ALIGN - 1)); | |
488 | skb_pull(skb, (unsigned long) skb->data & | |
489 | (BTSDIO_DMA_ALIGN - 1)); | |
789221ec BZ |
490 | } |
491 | ||
3318b236 | 492 | payload = skb->data; |
789221ec BZ |
493 | |
494 | ret = sdio_readsb(card->func, payload, card->ioport, | |
495 | buf_block_len * blksz); | |
496 | if (ret < 0) { | |
497 | BT_ERR("readsb failed: %d", ret); | |
498 | ret = -EIO; | |
499 | goto exit; | |
500 | } | |
501 | ||
502 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] | |
503 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) | |
504 | */ | |
505 | ||
506 | buf_len = payload[0]; | |
507 | buf_len |= (u16) payload[1] << 8; | |
508 | type = payload[3]; | |
509 | ||
510 | switch (type) { | |
511 | case HCI_ACLDATA_PKT: | |
512 | case HCI_SCODATA_PKT: | |
513 | case HCI_EVENT_PKT: | |
514 | bt_cb(skb)->pkt_type = type; | |
515 | skb->dev = (void *)hdev; | |
516 | skb_put(skb, buf_len); | |
517 | skb_pull(skb, SDIO_HEADER_LEN); | |
518 | ||
519 | if (type == HCI_EVENT_PKT) | |
520 | btmrvl_check_evtpkt(priv, skb); | |
521 | ||
522 | hci_recv_frame(skb); | |
523 | hdev->stat.byte_rx += buf_len; | |
524 | break; | |
525 | ||
526 | case MRVL_VENDOR_PKT: | |
527 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; | |
528 | skb->dev = (void *)hdev; | |
529 | skb_put(skb, buf_len); | |
530 | skb_pull(skb, SDIO_HEADER_LEN); | |
531 | ||
532 | if (btmrvl_process_event(priv, skb)) | |
533 | hci_recv_frame(skb); | |
534 | ||
535 | hdev->stat.byte_rx += buf_len; | |
536 | break; | |
537 | ||
538 | default: | |
af901ca1 | 539 | BT_ERR("Unknown packet type:%d", type); |
789221ec | 540 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload, |
dcf47f3b | 541 | blksz * buf_block_len); |
789221ec BZ |
542 | |
543 | kfree_skb(skb); | |
544 | skb = NULL; | |
545 | break; | |
546 | } | |
547 | ||
548 | exit: | |
549 | if (ret) { | |
550 | hdev->stat.err_rx++; | |
551 | if (skb) | |
552 | kfree_skb(skb); | |
553 | } | |
554 | ||
789221ec BZ |
555 | return ret; |
556 | } | |
557 | ||
558 | static int btmrvl_sdio_get_int_status(struct btmrvl_private *priv, u8 * ireg) | |
559 | { | |
560 | int ret; | |
561 | u8 sdio_ireg = 0; | |
562 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
563 | ||
789221ec BZ |
564 | *ireg = 0; |
565 | ||
566 | sdio_ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret); | |
567 | if (ret) { | |
568 | BT_ERR("sdio_readb: read int status register failed"); | |
569 | ret = -EIO; | |
570 | goto done; | |
571 | } | |
572 | ||
573 | if (sdio_ireg != 0) { | |
574 | /* | |
575 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS | |
576 | * Clear the interrupt status register and re-enable the | |
577 | * interrupt. | |
578 | */ | |
579 | BT_DBG("sdio_ireg = 0x%x", sdio_ireg); | |
580 | ||
581 | sdio_writeb(card->func, ~(sdio_ireg) & (DN_LD_HOST_INT_STATUS | | |
582 | UP_LD_HOST_INT_STATUS), | |
583 | HOST_INTSTATUS_REG, &ret); | |
584 | if (ret) { | |
585 | BT_ERR("sdio_writeb: clear int status register " | |
586 | "failed"); | |
587 | ret = -EIO; | |
588 | goto done; | |
589 | } | |
590 | } | |
591 | ||
592 | if (sdio_ireg & DN_LD_HOST_INT_STATUS) { | |
593 | if (priv->btmrvl_dev.tx_dnld_rdy) | |
594 | BT_DBG("tx_done already received: " | |
595 | " int_status=0x%x", sdio_ireg); | |
596 | else | |
597 | priv->btmrvl_dev.tx_dnld_rdy = true; | |
598 | } | |
599 | ||
600 | if (sdio_ireg & UP_LD_HOST_INT_STATUS) | |
601 | btmrvl_sdio_card_to_host(priv); | |
602 | ||
603 | *ireg = sdio_ireg; | |
604 | ||
605 | ret = 0; | |
606 | ||
607 | done: | |
789221ec BZ |
608 | return ret; |
609 | } | |
610 | ||
611 | static void btmrvl_sdio_interrupt(struct sdio_func *func) | |
612 | { | |
613 | struct btmrvl_private *priv; | |
614 | struct hci_dev *hcidev; | |
615 | struct btmrvl_sdio_card *card; | |
616 | u8 ireg = 0; | |
617 | ||
789221ec BZ |
618 | card = sdio_get_drvdata(func); |
619 | if (card && card->priv) { | |
620 | priv = card->priv; | |
621 | hcidev = priv->btmrvl_dev.hcidev; | |
622 | ||
623 | if (btmrvl_sdio_get_int_status(priv, &ireg)) | |
624 | BT_ERR("reading HOST_INT_STATUS_REG failed"); | |
625 | else | |
626 | BT_DBG("HOST_INT_STATUS_REG %#x", ireg); | |
627 | ||
628 | btmrvl_interrupt(priv); | |
629 | } | |
789221ec BZ |
630 | } |
631 | ||
632 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) | |
633 | { | |
789221ec | 634 | struct sdio_func *func; |
dcf47f3b MH |
635 | u8 reg; |
636 | int ret = 0; | |
789221ec | 637 | |
789221ec BZ |
638 | if (!card || !card->func) { |
639 | BT_ERR("Error: card or function is NULL!"); | |
640 | ret = -EINVAL; | |
641 | goto failed; | |
642 | } | |
643 | ||
644 | func = card->func; | |
645 | ||
789221ec BZ |
646 | sdio_claim_host(func); |
647 | ||
648 | ret = sdio_enable_func(func); | |
649 | if (ret) { | |
650 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); | |
651 | ret = -EIO; | |
652 | goto release_host; | |
653 | } | |
654 | ||
655 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); | |
656 | if (ret) { | |
657 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); | |
658 | ret = -EIO; | |
659 | goto disable_func; | |
660 | } | |
661 | ||
662 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); | |
663 | if (ret) { | |
664 | BT_ERR("cannot set SDIO block size"); | |
665 | ret = -EIO; | |
666 | goto release_irq; | |
667 | } | |
668 | ||
669 | reg = sdio_readb(func, IO_PORT_0_REG, &ret); | |
670 | if (ret < 0) { | |
671 | ret = -EIO; | |
672 | goto release_irq; | |
673 | } | |
674 | ||
675 | card->ioport = reg; | |
676 | ||
677 | reg = sdio_readb(func, IO_PORT_1_REG, &ret); | |
678 | if (ret < 0) { | |
679 | ret = -EIO; | |
680 | goto release_irq; | |
681 | } | |
682 | ||
683 | card->ioport |= (reg << 8); | |
684 | ||
685 | reg = sdio_readb(func, IO_PORT_2_REG, &ret); | |
686 | if (ret < 0) { | |
687 | ret = -EIO; | |
688 | goto release_irq; | |
689 | } | |
690 | ||
691 | card->ioport |= (reg << 16); | |
692 | ||
693 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); | |
694 | ||
695 | sdio_set_drvdata(func, card); | |
696 | ||
697 | sdio_release_host(func); | |
698 | ||
789221ec BZ |
699 | return 0; |
700 | ||
701 | release_irq: | |
702 | sdio_release_irq(func); | |
703 | ||
704 | disable_func: | |
705 | sdio_disable_func(func); | |
706 | ||
707 | release_host: | |
708 | sdio_release_host(func); | |
709 | ||
710 | failed: | |
789221ec BZ |
711 | return ret; |
712 | } | |
713 | ||
714 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) | |
715 | { | |
789221ec BZ |
716 | if (card && card->func) { |
717 | sdio_claim_host(card->func); | |
718 | sdio_release_irq(card->func); | |
719 | sdio_disable_func(card->func); | |
720 | sdio_release_host(card->func); | |
721 | sdio_set_drvdata(card->func, NULL); | |
722 | } | |
723 | ||
789221ec BZ |
724 | return 0; |
725 | } | |
726 | ||
727 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) | |
728 | { | |
729 | int ret; | |
730 | ||
9374253f | 731 | if (!card || !card->func) |
789221ec | 732 | return -EINVAL; |
789221ec BZ |
733 | |
734 | sdio_claim_host(card->func); | |
735 | ||
736 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); | |
737 | ||
738 | btmrvl_sdio_get_rx_unit(card); | |
739 | ||
740 | sdio_release_host(card->func); | |
741 | ||
789221ec BZ |
742 | return ret; |
743 | } | |
744 | ||
745 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) | |
746 | { | |
747 | int ret; | |
748 | ||
9374253f | 749 | if (!card || !card->func) |
789221ec | 750 | return -EINVAL; |
789221ec BZ |
751 | |
752 | sdio_claim_host(card->func); | |
753 | ||
754 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); | |
755 | ||
756 | sdio_release_host(card->func); | |
757 | ||
789221ec BZ |
758 | return ret; |
759 | } | |
760 | ||
761 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, | |
762 | u8 *payload, u16 nb) | |
763 | { | |
764 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
765 | int ret = 0; | |
766 | int buf_block_len; | |
767 | int blksz; | |
768 | int i = 0; | |
769 | u8 *buf = NULL; | |
770 | void *tmpbuf = NULL; | |
771 | int tmpbufsz; | |
772 | ||
789221ec BZ |
773 | if (!card || !card->func) { |
774 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
775 | return -EINVAL; |
776 | } | |
777 | ||
778 | buf = payload; | |
3318b236 | 779 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
789221ec | 780 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
5959809d JL |
781 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
782 | if (!tmpbuf) | |
783 | return -ENOMEM; | |
789221ec BZ |
784 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
785 | memcpy(buf, payload, nb); | |
786 | } | |
787 | ||
788 | blksz = SDIO_BLOCK_SIZE; | |
789 | buf_block_len = (nb + blksz - 1) / blksz; | |
790 | ||
791 | sdio_claim_host(card->func); | |
792 | ||
793 | do { | |
794 | /* Transfer data to card */ | |
795 | ret = sdio_writesb(card->func, card->ioport, buf, | |
796 | buf_block_len * blksz); | |
797 | if (ret < 0) { | |
798 | i++; | |
799 | BT_ERR("i=%d writesb failed: %d", i, ret); | |
800 | print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, | |
801 | payload, nb); | |
802 | ret = -EIO; | |
803 | if (i > MAX_WRITE_IOMEM_RETRY) | |
804 | goto exit; | |
805 | } | |
806 | } while (ret); | |
807 | ||
808 | priv->btmrvl_dev.tx_dnld_rdy = false; | |
809 | ||
810 | exit: | |
811 | sdio_release_host(card->func); | |
88d1a0cf | 812 | kfree(tmpbuf); |
789221ec | 813 | |
789221ec BZ |
814 | return ret; |
815 | } | |
816 | ||
817 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) | |
818 | { | |
819 | int ret = 0; | |
820 | ||
789221ec BZ |
821 | if (!card || !card->func) { |
822 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
823 | return -EINVAL; |
824 | } | |
825 | sdio_claim_host(card->func); | |
826 | ||
827 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { | |
828 | BT_DBG("Firmware already downloaded!"); | |
829 | goto done; | |
830 | } | |
831 | ||
832 | ret = btmrvl_sdio_download_helper(card); | |
833 | if (ret) { | |
834 | BT_ERR("Failed to download helper!"); | |
835 | ret = -EIO; | |
836 | goto done; | |
837 | } | |
838 | ||
839 | if (btmrvl_sdio_download_fw_w_helper(card)) { | |
840 | BT_ERR("Failed to download firmware!"); | |
841 | ret = -EIO; | |
842 | goto done; | |
843 | } | |
844 | ||
845 | if (btmrvl_sdio_verify_fw_download(card, MAX_POLL_TRIES)) { | |
846 | BT_ERR("FW failed to be active in time!"); | |
847 | ret = -ETIMEDOUT; | |
848 | goto done; | |
849 | } | |
850 | ||
851 | done: | |
852 | sdio_release_host(card->func); | |
853 | ||
789221ec BZ |
854 | return ret; |
855 | } | |
856 | ||
857 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) | |
858 | { | |
859 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; | |
860 | int ret = 0; | |
861 | ||
789221ec BZ |
862 | if (!card || !card->func) { |
863 | BT_ERR("card or function is NULL!"); | |
789221ec BZ |
864 | return -EINVAL; |
865 | } | |
866 | ||
867 | sdio_claim_host(card->func); | |
868 | ||
869 | sdio_writeb(card->func, HOST_POWER_UP, CONFIG_REG, &ret); | |
870 | ||
871 | sdio_release_host(card->func); | |
872 | ||
873 | BT_DBG("wake up firmware"); | |
874 | ||
789221ec BZ |
875 | return ret; |
876 | } | |
877 | ||
878 | static int btmrvl_sdio_probe(struct sdio_func *func, | |
dcf47f3b | 879 | const struct sdio_device_id *id) |
789221ec BZ |
880 | { |
881 | int ret = 0; | |
882 | struct btmrvl_private *priv = NULL; | |
883 | struct btmrvl_sdio_card *card = NULL; | |
884 | ||
789221ec BZ |
885 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", |
886 | id->vendor, id->device, id->class, func->num); | |
887 | ||
888 | card = kzalloc(sizeof(*card), GFP_KERNEL); | |
889 | if (!card) { | |
890 | ret = -ENOMEM; | |
891 | goto done; | |
892 | } | |
893 | ||
894 | card->func = func; | |
895 | ||
dcf47f3b MH |
896 | if (id->driver_data) { |
897 | struct btmrvl_sdio_device *data = (void *) id->driver_data; | |
898 | card->helper = data->helper; | |
899 | card->firmware = data->firmware; | |
900 | } | |
901 | ||
789221ec BZ |
902 | if (btmrvl_sdio_register_dev(card) < 0) { |
903 | BT_ERR("Failed to register BT device!"); | |
904 | ret = -ENODEV; | |
905 | goto free_card; | |
906 | } | |
907 | ||
908 | /* Disable the interrupts on the card */ | |
909 | btmrvl_sdio_disable_host_int(card); | |
910 | ||
911 | if (btmrvl_sdio_download_fw(card)) { | |
912 | BT_ERR("Downloading firmware failed!"); | |
913 | ret = -ENODEV; | |
914 | goto unreg_dev; | |
915 | } | |
916 | ||
917 | msleep(100); | |
918 | ||
919 | btmrvl_sdio_enable_host_int(card); | |
920 | ||
921 | priv = btmrvl_add_card(card); | |
922 | if (!priv) { | |
923 | BT_ERR("Initializing card failed!"); | |
924 | ret = -ENODEV; | |
925 | goto disable_host_int; | |
926 | } | |
927 | ||
928 | card->priv = priv; | |
929 | ||
930 | /* Initialize the interface specific function pointers */ | |
931 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; | |
932 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; | |
933 | ||
789221ec | 934 | btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ); |
32fd6398 AK |
935 | priv->btmrvl_dev.psmode = 1; |
936 | btmrvl_enable_ps(priv); | |
789221ec | 937 | |
789221ec BZ |
938 | return 0; |
939 | ||
940 | disable_host_int: | |
941 | btmrvl_sdio_disable_host_int(card); | |
942 | unreg_dev: | |
943 | btmrvl_sdio_unregister_dev(card); | |
944 | free_card: | |
945 | kfree(card); | |
946 | done: | |
789221ec BZ |
947 | return ret; |
948 | } | |
949 | ||
950 | static void btmrvl_sdio_remove(struct sdio_func *func) | |
951 | { | |
952 | struct btmrvl_sdio_card *card; | |
953 | ||
789221ec BZ |
954 | if (func) { |
955 | card = sdio_get_drvdata(func); | |
956 | if (card) { | |
957 | /* Send SHUTDOWN command & disable interrupt | |
958 | * if user removes the module. | |
959 | */ | |
960 | if (user_rmmod) { | |
961 | btmrvl_send_module_cfg_cmd(card->priv, | |
962 | MODULE_SHUTDOWN_REQ); | |
963 | btmrvl_sdio_disable_host_int(card); | |
964 | } | |
965 | BT_DBG("unregester dev"); | |
966 | btmrvl_sdio_unregister_dev(card); | |
967 | btmrvl_remove_card(card->priv); | |
968 | kfree(card); | |
969 | } | |
970 | } | |
789221ec BZ |
971 | } |
972 | ||
973 | static struct sdio_driver bt_mrvl_sdio = { | |
974 | .name = "btmrvl_sdio", | |
975 | .id_table = btmrvl_sdio_ids, | |
976 | .probe = btmrvl_sdio_probe, | |
977 | .remove = btmrvl_sdio_remove, | |
978 | }; | |
979 | ||
8e5b2308 | 980 | static int __init btmrvl_sdio_init_module(void) |
789221ec | 981 | { |
789221ec BZ |
982 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
983 | BT_ERR("SDIO Driver Registration Failed"); | |
789221ec BZ |
984 | return -ENODEV; |
985 | } | |
986 | ||
987 | /* Clear the flag in case user removes the card. */ | |
988 | user_rmmod = 0; | |
989 | ||
789221ec BZ |
990 | return 0; |
991 | } | |
992 | ||
8e5b2308 | 993 | static void __exit btmrvl_sdio_exit_module(void) |
789221ec | 994 | { |
789221ec BZ |
995 | /* Set the flag as user is removing this module. */ |
996 | user_rmmod = 1; | |
997 | ||
998 | sdio_unregister_driver(&bt_mrvl_sdio); | |
789221ec BZ |
999 | } |
1000 | ||
1001 | module_init(btmrvl_sdio_init_module); | |
1002 | module_exit(btmrvl_sdio_exit_module); | |
1003 | ||
1004 | MODULE_AUTHOR("Marvell International Ltd."); | |
9666fb35 | 1005 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
789221ec BZ |
1006 | MODULE_VERSION(VERSION); |
1007 | MODULE_LICENSE("GPL v2"); | |
2861453b BH |
1008 | MODULE_FIRMWARE("sd8688_helper.bin"); |
1009 | MODULE_FIRMWARE("sd8688.bin"); |