Root/
1 | /** |
2 | * Marvell BT-over-SDIO driver: SDIO interface related functions. |
3 | * |
4 | * Copyright (C) 2009, Marvell International Ltd. |
5 | * |
6 | * This software file (the "File") is distributed by Marvell International |
7 | * Ltd. under the terms of the GNU General Public License Version 2, June 1991 |
8 | * (the "License"). You may use, redistribute and/or modify this File in |
9 | * accordance with the terms and conditions of the License, a copy of which |
10 | * is available by writing to the Free Software Foundation, Inc., |
11 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the |
12 | * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. |
13 | * |
14 | * |
15 | * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE |
17 | * ARE EXPRESSLY DISCLAIMED. The License provides additional details about |
18 | * this warranty disclaimer. |
19 | **/ |
20 | |
21 | #include <linux/firmware.h> |
22 | #include <linux/slab.h> |
23 | |
24 | #include <linux/mmc/sdio_ids.h> |
25 | #include <linux/mmc/sdio_func.h> |
26 | #include <linux/module.h> |
27 | |
28 | #include <net/bluetooth/bluetooth.h> |
29 | #include <net/bluetooth/hci_core.h> |
30 | |
31 | #include "btmrvl_drv.h" |
32 | #include "btmrvl_sdio.h" |
33 | |
34 | #define VERSION "1.0" |
35 | |
36 | /* The btmrvl_sdio_remove() callback function is called |
37 | * when user removes this module from kernel space or ejects |
38 | * the card from the slot. The driver handles these 2 cases |
39 | * differently. |
40 | * If the user is removing the module, a MODULE_SHUTDOWN_REQ |
41 | * command is sent to firmware and interrupt will be disabled. |
42 | * If the card is removed, there is no need to send command |
43 | * or disable interrupt. |
44 | * |
45 | * The variable 'user_rmmod' is used to distinguish these two |
46 | * scenarios. This flag is initialized as FALSE in case the card |
47 | * is removed, and will be set to TRUE for module removal when |
48 | * module_exit function is called. |
49 | */ |
50 | static u8 user_rmmod; |
51 | static u8 sdio_ireg; |
52 | |
53 | static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = { |
54 | .cfg = 0x03, |
55 | .host_int_mask = 0x04, |
56 | .host_intstatus = 0x05, |
57 | .card_status = 0x20, |
58 | .sq_read_base_addr_a0 = 0x10, |
59 | .sq_read_base_addr_a1 = 0x11, |
60 | .card_fw_status0 = 0x40, |
61 | .card_fw_status1 = 0x41, |
62 | .card_rx_len = 0x42, |
63 | .card_rx_unit = 0x43, |
64 | .io_port_0 = 0x00, |
65 | .io_port_1 = 0x01, |
66 | .io_port_2 = 0x02, |
67 | }; |
68 | static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = { |
69 | .cfg = 0x00, |
70 | .host_int_mask = 0x02, |
71 | .host_intstatus = 0x03, |
72 | .card_status = 0x30, |
73 | .sq_read_base_addr_a0 = 0x40, |
74 | .sq_read_base_addr_a1 = 0x41, |
75 | .card_revision = 0x5c, |
76 | .card_fw_status0 = 0x60, |
77 | .card_fw_status1 = 0x61, |
78 | .card_rx_len = 0x62, |
79 | .card_rx_unit = 0x63, |
80 | .io_port_0 = 0x78, |
81 | .io_port_1 = 0x79, |
82 | .io_port_2 = 0x7a, |
83 | }; |
84 | |
85 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = { |
86 | .helper = "sd8688_helper.bin", |
87 | .firmware = "sd8688.bin", |
88 | .reg = &btmrvl_reg_8688, |
89 | .sd_blksz_fw_dl = 64, |
90 | }; |
91 | |
92 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = { |
93 | .helper = NULL, |
94 | .firmware = "mrvl/sd8787_uapsta.bin", |
95 | .reg = &btmrvl_reg_87xx, |
96 | .sd_blksz_fw_dl = 256, |
97 | }; |
98 | |
99 | static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = { |
100 | .helper = NULL, |
101 | .firmware = "mrvl/sd8797_uapsta.bin", |
102 | .reg = &btmrvl_reg_87xx, |
103 | .sd_blksz_fw_dl = 256, |
104 | }; |
105 | |
106 | static const struct sdio_device_id btmrvl_sdio_ids[] = { |
107 | /* Marvell SD8688 Bluetooth device */ |
108 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105), |
109 | .driver_data = (unsigned long) &btmrvl_sdio_sd8688 }, |
110 | /* Marvell SD8787 Bluetooth device */ |
111 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A), |
112 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, |
113 | /* Marvell SD8787 Bluetooth AMP device */ |
114 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B), |
115 | .driver_data = (unsigned long) &btmrvl_sdio_sd8787 }, |
116 | /* Marvell SD8797 Bluetooth device */ |
117 | { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A), |
118 | .driver_data = (unsigned long) &btmrvl_sdio_sd8797 }, |
119 | |
120 | { } /* Terminating entry */ |
121 | }; |
122 | |
123 | MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids); |
124 | |
125 | static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card) |
126 | { |
127 | u8 reg; |
128 | int ret; |
129 | |
130 | reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret); |
131 | if (!ret) |
132 | card->rx_unit = reg; |
133 | |
134 | return ret; |
135 | } |
136 | |
137 | static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat) |
138 | { |
139 | u8 fws0, fws1; |
140 | int ret; |
141 | |
142 | *dat = 0; |
143 | |
144 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); |
145 | if (ret) |
146 | return -EIO; |
147 | |
148 | fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret); |
149 | if (ret) |
150 | return -EIO; |
151 | |
152 | *dat = (((u16) fws1) << 8) | fws0; |
153 | |
154 | return 0; |
155 | } |
156 | |
157 | static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat) |
158 | { |
159 | u8 reg; |
160 | int ret; |
161 | |
162 | reg = sdio_readb(card->func, card->reg->card_rx_len, &ret); |
163 | if (!ret) |
164 | *dat = (u16) reg << card->rx_unit; |
165 | |
166 | return ret; |
167 | } |
168 | |
169 | static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card, |
170 | u8 mask) |
171 | { |
172 | int ret; |
173 | |
174 | sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret); |
175 | if (ret) { |
176 | BT_ERR("Unable to enable the host interrupt!"); |
177 | ret = -EIO; |
178 | } |
179 | |
180 | return ret; |
181 | } |
182 | |
183 | static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card, |
184 | u8 mask) |
185 | { |
186 | u8 host_int_mask; |
187 | int ret; |
188 | |
189 | host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret); |
190 | if (ret) |
191 | return -EIO; |
192 | |
193 | host_int_mask &= ~mask; |
194 | |
195 | sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret); |
196 | if (ret < 0) { |
197 | BT_ERR("Unable to disable the host interrupt!"); |
198 | return -EIO; |
199 | } |
200 | |
201 | return 0; |
202 | } |
203 | |
204 | static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits) |
205 | { |
206 | unsigned int tries; |
207 | u8 status; |
208 | int ret; |
209 | |
210 | for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) { |
211 | status = sdio_readb(card->func, card->reg->card_status, &ret); |
212 | if (ret) |
213 | goto failed; |
214 | if ((status & bits) == bits) |
215 | return ret; |
216 | |
217 | udelay(1); |
218 | } |
219 | |
220 | ret = -ETIMEDOUT; |
221 | |
222 | failed: |
223 | BT_ERR("FAILED! ret=%d", ret); |
224 | |
225 | return ret; |
226 | } |
227 | |
228 | static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card, |
229 | int pollnum) |
230 | { |
231 | int ret = -ETIMEDOUT; |
232 | u16 firmwarestat; |
233 | unsigned int tries; |
234 | |
235 | /* Wait for firmware to become ready */ |
236 | for (tries = 0; tries < pollnum; tries++) { |
237 | if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0) |
238 | continue; |
239 | |
240 | if (firmwarestat == FIRMWARE_READY) { |
241 | ret = 0; |
242 | break; |
243 | } else { |
244 | msleep(10); |
245 | } |
246 | } |
247 | |
248 | return ret; |
249 | } |
250 | |
251 | static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card) |
252 | { |
253 | const struct firmware *fw_helper = NULL; |
254 | const u8 *helper = NULL; |
255 | int ret; |
256 | void *tmphlprbuf = NULL; |
257 | int tmphlprbufsz, hlprblknow, helperlen; |
258 | u8 *helperbuf; |
259 | u32 tx_len; |
260 | |
261 | ret = request_firmware(&fw_helper, card->helper, |
262 | &card->func->dev); |
263 | if ((ret < 0) || !fw_helper) { |
264 | BT_ERR("request_firmware(helper) failed, error code = %d", |
265 | ret); |
266 | ret = -ENOENT; |
267 | goto done; |
268 | } |
269 | |
270 | helper = fw_helper->data; |
271 | helperlen = fw_helper->size; |
272 | |
273 | BT_DBG("Downloading helper image (%d bytes), block size %d bytes", |
274 | helperlen, SDIO_BLOCK_SIZE); |
275 | |
276 | tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); |
277 | |
278 | tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL); |
279 | if (!tmphlprbuf) { |
280 | BT_ERR("Unable to allocate buffer for helper." |
281 | " Terminating download"); |
282 | ret = -ENOMEM; |
283 | goto done; |
284 | } |
285 | |
286 | helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN); |
287 | |
288 | /* Perform helper data transfer */ |
289 | tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE) |
290 | - SDIO_HEADER_LEN; |
291 | hlprblknow = 0; |
292 | |
293 | do { |
294 | ret = btmrvl_sdio_poll_card_status(card, |
295 | CARD_IO_READY | DN_LD_CARD_RDY); |
296 | if (ret < 0) { |
297 | BT_ERR("Helper download poll status timeout @ %d", |
298 | hlprblknow); |
299 | goto done; |
300 | } |
301 | |
302 | /* Check if there is more data? */ |
303 | if (hlprblknow >= helperlen) |
304 | break; |
305 | |
306 | if (helperlen - hlprblknow < tx_len) |
307 | tx_len = helperlen - hlprblknow; |
308 | |
309 | /* Little-endian */ |
310 | helperbuf[0] = ((tx_len & 0x000000ff) >> 0); |
311 | helperbuf[1] = ((tx_len & 0x0000ff00) >> 8); |
312 | helperbuf[2] = ((tx_len & 0x00ff0000) >> 16); |
313 | helperbuf[3] = ((tx_len & 0xff000000) >> 24); |
314 | |
315 | memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow], |
316 | tx_len); |
317 | |
318 | /* Now send the data */ |
319 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
320 | FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE); |
321 | if (ret < 0) { |
322 | BT_ERR("IO error during helper download @ %d", |
323 | hlprblknow); |
324 | goto done; |
325 | } |
326 | |
327 | hlprblknow += tx_len; |
328 | } while (true); |
329 | |
330 | BT_DBG("Transferring helper image EOF block"); |
331 | |
332 | memset(helperbuf, 0x0, SDIO_BLOCK_SIZE); |
333 | |
334 | ret = sdio_writesb(card->func, card->ioport, helperbuf, |
335 | SDIO_BLOCK_SIZE); |
336 | if (ret < 0) { |
337 | BT_ERR("IO error in writing helper image EOF block"); |
338 | goto done; |
339 | } |
340 | |
341 | ret = 0; |
342 | |
343 | done: |
344 | kfree(tmphlprbuf); |
345 | release_firmware(fw_helper); |
346 | return ret; |
347 | } |
348 | |
349 | static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card) |
350 | { |
351 | const struct firmware *fw_firmware = NULL; |
352 | const u8 *firmware = NULL; |
353 | int firmwarelen, tmpfwbufsz, ret; |
354 | unsigned int tries, offset; |
355 | u8 base0, base1; |
356 | void *tmpfwbuf = NULL; |
357 | u8 *fwbuf; |
358 | u16 len, blksz_dl = card->sd_blksz_fw_dl; |
359 | int txlen = 0, tx_blocks = 0, count = 0; |
360 | |
361 | ret = request_firmware(&fw_firmware, card->firmware, |
362 | &card->func->dev); |
363 | if ((ret < 0) || !fw_firmware) { |
364 | BT_ERR("request_firmware(firmware) failed, error code = %d", |
365 | ret); |
366 | ret = -ENOENT; |
367 | goto done; |
368 | } |
369 | |
370 | firmware = fw_firmware->data; |
371 | firmwarelen = fw_firmware->size; |
372 | |
373 | BT_DBG("Downloading FW image (%d bytes)", firmwarelen); |
374 | |
375 | tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN); |
376 | tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL); |
377 | if (!tmpfwbuf) { |
378 | BT_ERR("Unable to allocate buffer for firmware." |
379 | " Terminating download"); |
380 | ret = -ENOMEM; |
381 | goto done; |
382 | } |
383 | |
384 | /* Ensure aligned firmware buffer */ |
385 | fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN); |
386 | |
387 | /* Perform firmware data transfer */ |
388 | offset = 0; |
389 | do { |
390 | ret = btmrvl_sdio_poll_card_status(card, |
391 | CARD_IO_READY | DN_LD_CARD_RDY); |
392 | if (ret < 0) { |
393 | BT_ERR("FW download with helper poll status" |
394 | " timeout @ %d", offset); |
395 | goto done; |
396 | } |
397 | |
398 | /* Check if there is more data ? */ |
399 | if (offset >= firmwarelen) |
400 | break; |
401 | |
402 | for (tries = 0; tries < MAX_POLL_TRIES; tries++) { |
403 | base0 = sdio_readb(card->func, |
404 | card->reg->sq_read_base_addr_a0, &ret); |
405 | if (ret) { |
406 | BT_ERR("BASE0 register read failed:" |
407 | " base0 = 0x%04X(%d)." |
408 | " Terminating download", |
409 | base0, base0); |
410 | ret = -EIO; |
411 | goto done; |
412 | } |
413 | base1 = sdio_readb(card->func, |
414 | card->reg->sq_read_base_addr_a1, &ret); |
415 | if (ret) { |
416 | BT_ERR("BASE1 register read failed:" |
417 | " base1 = 0x%04X(%d)." |
418 | " Terminating download", |
419 | base1, base1); |
420 | ret = -EIO; |
421 | goto done; |
422 | } |
423 | |
424 | len = (((u16) base1) << 8) | base0; |
425 | if (len) |
426 | break; |
427 | |
428 | udelay(10); |
429 | } |
430 | |
431 | if (!len) |
432 | break; |
433 | else if (len > BTM_UPLD_SIZE) { |
434 | BT_ERR("FW download failure @%d, invalid length %d", |
435 | offset, len); |
436 | ret = -EINVAL; |
437 | goto done; |
438 | } |
439 | |
440 | txlen = len; |
441 | |
442 | if (len & BIT(0)) { |
443 | count++; |
444 | if (count > MAX_WRITE_IOMEM_RETRY) { |
445 | BT_ERR("FW download failure @%d, " |
446 | "over max retry count", offset); |
447 | ret = -EIO; |
448 | goto done; |
449 | } |
450 | BT_ERR("FW CRC error indicated by the helper: " |
451 | "len = 0x%04X, txlen = %d", len, txlen); |
452 | len &= ~BIT(0); |
453 | /* Set txlen to 0 so as to resend from same offset */ |
454 | txlen = 0; |
455 | } else { |
456 | count = 0; |
457 | |
458 | /* Last block ? */ |
459 | if (firmwarelen - offset < txlen) |
460 | txlen = firmwarelen - offset; |
461 | |
462 | tx_blocks = (txlen + blksz_dl - 1) / blksz_dl; |
463 | |
464 | memcpy(fwbuf, &firmware[offset], txlen); |
465 | } |
466 | |
467 | ret = sdio_writesb(card->func, card->ioport, fwbuf, |
468 | tx_blocks * blksz_dl); |
469 | |
470 | if (ret < 0) { |
471 | BT_ERR("FW download, writesb(%d) failed @%d", |
472 | count, offset); |
473 | sdio_writeb(card->func, HOST_CMD53_FIN, |
474 | card->reg->cfg, &ret); |
475 | if (ret) |
476 | BT_ERR("writeb failed (CFG)"); |
477 | } |
478 | |
479 | offset += txlen; |
480 | } while (true); |
481 | |
482 | BT_DBG("FW download over, size %d bytes", offset); |
483 | |
484 | ret = 0; |
485 | |
486 | done: |
487 | kfree(tmpfwbuf); |
488 | release_firmware(fw_firmware); |
489 | return ret; |
490 | } |
491 | |
492 | static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv) |
493 | { |
494 | u16 buf_len = 0; |
495 | int ret, num_blocks, blksz; |
496 | struct sk_buff *skb = NULL; |
497 | u32 type; |
498 | u8 *payload = NULL; |
499 | struct hci_dev *hdev = priv->btmrvl_dev.hcidev; |
500 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
501 | |
502 | if (!card || !card->func) { |
503 | BT_ERR("card or function is NULL!"); |
504 | ret = -EINVAL; |
505 | goto exit; |
506 | } |
507 | |
508 | /* Read the length of data to be transferred */ |
509 | ret = btmrvl_sdio_read_rx_len(card, &buf_len); |
510 | if (ret < 0) { |
511 | BT_ERR("read rx_len failed"); |
512 | ret = -EIO; |
513 | goto exit; |
514 | } |
515 | |
516 | blksz = SDIO_BLOCK_SIZE; |
517 | num_blocks = DIV_ROUND_UP(buf_len, blksz); |
518 | |
519 | if (buf_len <= SDIO_HEADER_LEN |
520 | || (num_blocks * blksz) > ALLOC_BUF_SIZE) { |
521 | BT_ERR("invalid packet length: %d", buf_len); |
522 | ret = -EINVAL; |
523 | goto exit; |
524 | } |
525 | |
526 | /* Allocate buffer */ |
527 | skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC); |
528 | if (skb == NULL) { |
529 | BT_ERR("No free skb"); |
530 | goto exit; |
531 | } |
532 | |
533 | if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) { |
534 | skb_put(skb, (unsigned long) skb->data & |
535 | (BTSDIO_DMA_ALIGN - 1)); |
536 | skb_pull(skb, (unsigned long) skb->data & |
537 | (BTSDIO_DMA_ALIGN - 1)); |
538 | } |
539 | |
540 | payload = skb->data; |
541 | |
542 | ret = sdio_readsb(card->func, payload, card->ioport, |
543 | num_blocks * blksz); |
544 | if (ret < 0) { |
545 | BT_ERR("readsb failed: %d", ret); |
546 | ret = -EIO; |
547 | goto exit; |
548 | } |
549 | |
550 | /* This is SDIO specific header length: byte[2][1][0], type: byte[3] |
551 | * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor) |
552 | */ |
553 | |
554 | buf_len = payload[0]; |
555 | buf_len |= payload[1] << 8; |
556 | buf_len |= payload[2] << 16; |
557 | |
558 | if (buf_len > blksz * num_blocks) { |
559 | BT_ERR("Skip incorrect packet: hdrlen %d buffer %d", |
560 | buf_len, blksz * num_blocks); |
561 | ret = -EIO; |
562 | goto exit; |
563 | } |
564 | |
565 | type = payload[3]; |
566 | |
567 | switch (type) { |
568 | case HCI_ACLDATA_PKT: |
569 | case HCI_SCODATA_PKT: |
570 | case HCI_EVENT_PKT: |
571 | bt_cb(skb)->pkt_type = type; |
572 | skb->dev = (void *)hdev; |
573 | skb_put(skb, buf_len); |
574 | skb_pull(skb, SDIO_HEADER_LEN); |
575 | |
576 | if (type == HCI_EVENT_PKT) { |
577 | if (btmrvl_check_evtpkt(priv, skb)) |
578 | hci_recv_frame(skb); |
579 | } else { |
580 | hci_recv_frame(skb); |
581 | } |
582 | |
583 | hdev->stat.byte_rx += buf_len; |
584 | break; |
585 | |
586 | case MRVL_VENDOR_PKT: |
587 | bt_cb(skb)->pkt_type = HCI_VENDOR_PKT; |
588 | skb->dev = (void *)hdev; |
589 | skb_put(skb, buf_len); |
590 | skb_pull(skb, SDIO_HEADER_LEN); |
591 | |
592 | if (btmrvl_process_event(priv, skb)) |
593 | hci_recv_frame(skb); |
594 | |
595 | hdev->stat.byte_rx += buf_len; |
596 | break; |
597 | |
598 | default: |
599 | BT_ERR("Unknown packet type:%d", type); |
600 | BT_ERR("hex: %*ph", blksz * num_blocks, payload); |
601 | |
602 | kfree_skb(skb); |
603 | skb = NULL; |
604 | break; |
605 | } |
606 | |
607 | exit: |
608 | if (ret) { |
609 | hdev->stat.err_rx++; |
610 | kfree_skb(skb); |
611 | } |
612 | |
613 | return ret; |
614 | } |
615 | |
616 | static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv) |
617 | { |
618 | ulong flags; |
619 | u8 ireg; |
620 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
621 | |
622 | spin_lock_irqsave(&priv->driver_lock, flags); |
623 | ireg = sdio_ireg; |
624 | sdio_ireg = 0; |
625 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
626 | |
627 | sdio_claim_host(card->func); |
628 | if (ireg & DN_LD_HOST_INT_STATUS) { |
629 | if (priv->btmrvl_dev.tx_dnld_rdy) |
630 | BT_DBG("tx_done already received: " |
631 | " int_status=0x%x", ireg); |
632 | else |
633 | priv->btmrvl_dev.tx_dnld_rdy = true; |
634 | } |
635 | |
636 | if (ireg & UP_LD_HOST_INT_STATUS) |
637 | btmrvl_sdio_card_to_host(priv); |
638 | |
639 | sdio_release_host(card->func); |
640 | |
641 | return 0; |
642 | } |
643 | |
644 | static void btmrvl_sdio_interrupt(struct sdio_func *func) |
645 | { |
646 | struct btmrvl_private *priv; |
647 | struct btmrvl_sdio_card *card; |
648 | ulong flags; |
649 | u8 ireg = 0; |
650 | int ret; |
651 | |
652 | card = sdio_get_drvdata(func); |
653 | if (!card || !card->priv) { |
654 | BT_ERR("sbi_interrupt(%p) card or priv is " |
655 | "NULL, card=%p\n", func, card); |
656 | return; |
657 | } |
658 | |
659 | priv = card->priv; |
660 | |
661 | ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret); |
662 | if (ret) { |
663 | BT_ERR("sdio_readb: read int status register failed"); |
664 | return; |
665 | } |
666 | |
667 | if (ireg != 0) { |
668 | /* |
669 | * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS |
670 | * Clear the interrupt status register and re-enable the |
671 | * interrupt. |
672 | */ |
673 | BT_DBG("ireg = 0x%x", ireg); |
674 | |
675 | sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS | |
676 | UP_LD_HOST_INT_STATUS), |
677 | card->reg->host_intstatus, &ret); |
678 | if (ret) { |
679 | BT_ERR("sdio_writeb: clear int status register failed"); |
680 | return; |
681 | } |
682 | } |
683 | |
684 | spin_lock_irqsave(&priv->driver_lock, flags); |
685 | sdio_ireg |= ireg; |
686 | spin_unlock_irqrestore(&priv->driver_lock, flags); |
687 | |
688 | btmrvl_interrupt(priv); |
689 | } |
690 | |
691 | static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card) |
692 | { |
693 | struct sdio_func *func; |
694 | u8 reg; |
695 | int ret = 0; |
696 | |
697 | if (!card || !card->func) { |
698 | BT_ERR("Error: card or function is NULL!"); |
699 | ret = -EINVAL; |
700 | goto failed; |
701 | } |
702 | |
703 | func = card->func; |
704 | |
705 | sdio_claim_host(func); |
706 | |
707 | ret = sdio_enable_func(func); |
708 | if (ret) { |
709 | BT_ERR("sdio_enable_func() failed: ret=%d", ret); |
710 | ret = -EIO; |
711 | goto release_host; |
712 | } |
713 | |
714 | ret = sdio_claim_irq(func, btmrvl_sdio_interrupt); |
715 | if (ret) { |
716 | BT_ERR("sdio_claim_irq failed: ret=%d", ret); |
717 | ret = -EIO; |
718 | goto disable_func; |
719 | } |
720 | |
721 | ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE); |
722 | if (ret) { |
723 | BT_ERR("cannot set SDIO block size"); |
724 | ret = -EIO; |
725 | goto release_irq; |
726 | } |
727 | |
728 | reg = sdio_readb(func, card->reg->io_port_0, &ret); |
729 | if (ret < 0) { |
730 | ret = -EIO; |
731 | goto release_irq; |
732 | } |
733 | |
734 | card->ioport = reg; |
735 | |
736 | reg = sdio_readb(func, card->reg->io_port_1, &ret); |
737 | if (ret < 0) { |
738 | ret = -EIO; |
739 | goto release_irq; |
740 | } |
741 | |
742 | card->ioport |= (reg << 8); |
743 | |
744 | reg = sdio_readb(func, card->reg->io_port_2, &ret); |
745 | if (ret < 0) { |
746 | ret = -EIO; |
747 | goto release_irq; |
748 | } |
749 | |
750 | card->ioport |= (reg << 16); |
751 | |
752 | BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport); |
753 | |
754 | sdio_set_drvdata(func, card); |
755 | |
756 | sdio_release_host(func); |
757 | |
758 | return 0; |
759 | |
760 | release_irq: |
761 | sdio_release_irq(func); |
762 | |
763 | disable_func: |
764 | sdio_disable_func(func); |
765 | |
766 | release_host: |
767 | sdio_release_host(func); |
768 | |
769 | failed: |
770 | return ret; |
771 | } |
772 | |
773 | static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card) |
774 | { |
775 | if (card && card->func) { |
776 | sdio_claim_host(card->func); |
777 | sdio_release_irq(card->func); |
778 | sdio_disable_func(card->func); |
779 | sdio_release_host(card->func); |
780 | sdio_set_drvdata(card->func, NULL); |
781 | } |
782 | |
783 | return 0; |
784 | } |
785 | |
786 | static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card) |
787 | { |
788 | int ret; |
789 | |
790 | if (!card || !card->func) |
791 | return -EINVAL; |
792 | |
793 | sdio_claim_host(card->func); |
794 | |
795 | ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE); |
796 | |
797 | btmrvl_sdio_get_rx_unit(card); |
798 | |
799 | sdio_release_host(card->func); |
800 | |
801 | return ret; |
802 | } |
803 | |
804 | static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card) |
805 | { |
806 | int ret; |
807 | |
808 | if (!card || !card->func) |
809 | return -EINVAL; |
810 | |
811 | sdio_claim_host(card->func); |
812 | |
813 | ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE); |
814 | |
815 | sdio_release_host(card->func); |
816 | |
817 | return ret; |
818 | } |
819 | |
820 | static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv, |
821 | u8 *payload, u16 nb) |
822 | { |
823 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
824 | int ret = 0; |
825 | int buf_block_len; |
826 | int blksz; |
827 | int i = 0; |
828 | u8 *buf = NULL; |
829 | void *tmpbuf = NULL; |
830 | int tmpbufsz; |
831 | |
832 | if (!card || !card->func) { |
833 | BT_ERR("card or function is NULL!"); |
834 | return -EINVAL; |
835 | } |
836 | |
837 | buf = payload; |
838 | if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) { |
839 | tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN); |
840 | tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL); |
841 | if (!tmpbuf) |
842 | return -ENOMEM; |
843 | buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN); |
844 | memcpy(buf, payload, nb); |
845 | } |
846 | |
847 | blksz = SDIO_BLOCK_SIZE; |
848 | buf_block_len = (nb + blksz - 1) / blksz; |
849 | |
850 | sdio_claim_host(card->func); |
851 | |
852 | do { |
853 | /* Transfer data to card */ |
854 | ret = sdio_writesb(card->func, card->ioport, buf, |
855 | buf_block_len * blksz); |
856 | if (ret < 0) { |
857 | i++; |
858 | BT_ERR("i=%d writesb failed: %d", i, ret); |
859 | BT_ERR("hex: %*ph", nb, payload); |
860 | ret = -EIO; |
861 | if (i > MAX_WRITE_IOMEM_RETRY) |
862 | goto exit; |
863 | } |
864 | } while (ret); |
865 | |
866 | priv->btmrvl_dev.tx_dnld_rdy = false; |
867 | |
868 | exit: |
869 | sdio_release_host(card->func); |
870 | kfree(tmpbuf); |
871 | |
872 | return ret; |
873 | } |
874 | |
875 | static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card) |
876 | { |
877 | int ret = 0; |
878 | u8 fws0; |
879 | int pollnum = MAX_POLL_TRIES; |
880 | |
881 | if (!card || !card->func) { |
882 | BT_ERR("card or function is NULL!"); |
883 | return -EINVAL; |
884 | } |
885 | sdio_claim_host(card->func); |
886 | |
887 | if (!btmrvl_sdio_verify_fw_download(card, 1)) { |
888 | BT_DBG("Firmware already downloaded!"); |
889 | goto done; |
890 | } |
891 | |
892 | /* Check if other function driver is downloading the firmware */ |
893 | fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret); |
894 | if (ret) { |
895 | BT_ERR("Failed to read FW downloading status!"); |
896 | ret = -EIO; |
897 | goto done; |
898 | } |
899 | if (fws0) { |
900 | BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0); |
901 | |
902 | /* Give other function more time to download the firmware */ |
903 | pollnum *= 10; |
904 | } else { |
905 | if (card->helper) { |
906 | ret = btmrvl_sdio_download_helper(card); |
907 | if (ret) { |
908 | BT_ERR("Failed to download helper!"); |
909 | ret = -EIO; |
910 | goto done; |
911 | } |
912 | } |
913 | |
914 | if (btmrvl_sdio_download_fw_w_helper(card)) { |
915 | BT_ERR("Failed to download firmware!"); |
916 | ret = -EIO; |
917 | goto done; |
918 | } |
919 | } |
920 | |
921 | if (btmrvl_sdio_verify_fw_download(card, pollnum)) { |
922 | BT_ERR("FW failed to be active in time!"); |
923 | ret = -ETIMEDOUT; |
924 | goto done; |
925 | } |
926 | |
927 | done: |
928 | sdio_release_host(card->func); |
929 | |
930 | return ret; |
931 | } |
932 | |
933 | static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv) |
934 | { |
935 | struct btmrvl_sdio_card *card = priv->btmrvl_dev.card; |
936 | int ret = 0; |
937 | |
938 | if (!card || !card->func) { |
939 | BT_ERR("card or function is NULL!"); |
940 | return -EINVAL; |
941 | } |
942 | |
943 | sdio_claim_host(card->func); |
944 | |
945 | sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret); |
946 | |
947 | sdio_release_host(card->func); |
948 | |
949 | BT_DBG("wake up firmware"); |
950 | |
951 | return ret; |
952 | } |
953 | |
954 | static int btmrvl_sdio_probe(struct sdio_func *func, |
955 | const struct sdio_device_id *id) |
956 | { |
957 | int ret = 0; |
958 | struct btmrvl_private *priv = NULL; |
959 | struct btmrvl_sdio_card *card = NULL; |
960 | |
961 | BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d", |
962 | id->vendor, id->device, id->class, func->num); |
963 | |
964 | card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL); |
965 | if (!card) |
966 | return -ENOMEM; |
967 | |
968 | card->func = func; |
969 | |
970 | if (id->driver_data) { |
971 | struct btmrvl_sdio_device *data = (void *) id->driver_data; |
972 | card->helper = data->helper; |
973 | card->firmware = data->firmware; |
974 | card->reg = data->reg; |
975 | card->sd_blksz_fw_dl = data->sd_blksz_fw_dl; |
976 | } |
977 | |
978 | if (btmrvl_sdio_register_dev(card) < 0) { |
979 | BT_ERR("Failed to register BT device!"); |
980 | return -ENODEV; |
981 | } |
982 | |
983 | /* Disable the interrupts on the card */ |
984 | btmrvl_sdio_disable_host_int(card); |
985 | |
986 | if (btmrvl_sdio_download_fw(card)) { |
987 | BT_ERR("Downloading firmware failed!"); |
988 | ret = -ENODEV; |
989 | goto unreg_dev; |
990 | } |
991 | |
992 | msleep(100); |
993 | |
994 | btmrvl_sdio_enable_host_int(card); |
995 | |
996 | priv = btmrvl_add_card(card); |
997 | if (!priv) { |
998 | BT_ERR("Initializing card failed!"); |
999 | ret = -ENODEV; |
1000 | goto disable_host_int; |
1001 | } |
1002 | |
1003 | card->priv = priv; |
1004 | |
1005 | /* Initialize the interface specific function pointers */ |
1006 | priv->hw_host_to_card = btmrvl_sdio_host_to_card; |
1007 | priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw; |
1008 | priv->hw_process_int_status = btmrvl_sdio_process_int_status; |
1009 | |
1010 | if (btmrvl_register_hdev(priv)) { |
1011 | BT_ERR("Register hdev failed!"); |
1012 | ret = -ENODEV; |
1013 | goto disable_host_int; |
1014 | } |
1015 | |
1016 | priv->btmrvl_dev.psmode = 1; |
1017 | btmrvl_enable_ps(priv); |
1018 | |
1019 | priv->btmrvl_dev.gpio_gap = 0xffff; |
1020 | btmrvl_send_hscfg_cmd(priv); |
1021 | |
1022 | return 0; |
1023 | |
1024 | disable_host_int: |
1025 | btmrvl_sdio_disable_host_int(card); |
1026 | unreg_dev: |
1027 | btmrvl_sdio_unregister_dev(card); |
1028 | return ret; |
1029 | } |
1030 | |
1031 | static void btmrvl_sdio_remove(struct sdio_func *func) |
1032 | { |
1033 | struct btmrvl_sdio_card *card; |
1034 | |
1035 | if (func) { |
1036 | card = sdio_get_drvdata(func); |
1037 | if (card) { |
1038 | /* Send SHUTDOWN command & disable interrupt |
1039 | * if user removes the module. |
1040 | */ |
1041 | if (user_rmmod) { |
1042 | btmrvl_send_module_cfg_cmd(card->priv, |
1043 | MODULE_SHUTDOWN_REQ); |
1044 | btmrvl_sdio_disable_host_int(card); |
1045 | } |
1046 | BT_DBG("unregester dev"); |
1047 | btmrvl_sdio_unregister_dev(card); |
1048 | btmrvl_remove_card(card->priv); |
1049 | } |
1050 | } |
1051 | } |
1052 | |
1053 | static int btmrvl_sdio_suspend(struct device *dev) |
1054 | { |
1055 | struct sdio_func *func = dev_to_sdio_func(dev); |
1056 | struct btmrvl_sdio_card *card; |
1057 | struct btmrvl_private *priv; |
1058 | mmc_pm_flag_t pm_flags; |
1059 | struct hci_dev *hcidev; |
1060 | |
1061 | if (func) { |
1062 | pm_flags = sdio_get_host_pm_caps(func); |
1063 | BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func), |
1064 | pm_flags); |
1065 | if (!(pm_flags & MMC_PM_KEEP_POWER)) { |
1066 | BT_ERR("%s: cannot remain alive while suspended", |
1067 | sdio_func_id(func)); |
1068 | return -ENOSYS; |
1069 | } |
1070 | card = sdio_get_drvdata(func); |
1071 | if (!card || !card->priv) { |
1072 | BT_ERR("card or priv structure is not valid"); |
1073 | return 0; |
1074 | } |
1075 | } else { |
1076 | BT_ERR("sdio_func is not specified"); |
1077 | return 0; |
1078 | } |
1079 | |
1080 | priv = card->priv; |
1081 | |
1082 | if (priv->adapter->hs_state != HS_ACTIVATED) { |
1083 | if (btmrvl_enable_hs(priv)) { |
1084 | BT_ERR("HS not actived, suspend failed!"); |
1085 | return -EBUSY; |
1086 | } |
1087 | } |
1088 | hcidev = priv->btmrvl_dev.hcidev; |
1089 | BT_DBG("%s: SDIO suspend", hcidev->name); |
1090 | hci_suspend_dev(hcidev); |
1091 | skb_queue_purge(&priv->adapter->tx_queue); |
1092 | |
1093 | priv->adapter->is_suspended = true; |
1094 | |
1095 | /* We will keep the power when hs enabled successfully */ |
1096 | if (priv->adapter->hs_state == HS_ACTIVATED) { |
1097 | BT_DBG("suspend with MMC_PM_KEEP_POWER"); |
1098 | return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER); |
1099 | } else { |
1100 | BT_DBG("suspend without MMC_PM_KEEP_POWER"); |
1101 | return 0; |
1102 | } |
1103 | } |
1104 | |
1105 | static int btmrvl_sdio_resume(struct device *dev) |
1106 | { |
1107 | struct sdio_func *func = dev_to_sdio_func(dev); |
1108 | struct btmrvl_sdio_card *card; |
1109 | struct btmrvl_private *priv; |
1110 | mmc_pm_flag_t pm_flags; |
1111 | struct hci_dev *hcidev; |
1112 | |
1113 | if (func) { |
1114 | pm_flags = sdio_get_host_pm_caps(func); |
1115 | BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func), |
1116 | pm_flags); |
1117 | card = sdio_get_drvdata(func); |
1118 | if (!card || !card->priv) { |
1119 | BT_ERR("card or priv structure is not valid"); |
1120 | return 0; |
1121 | } |
1122 | } else { |
1123 | BT_ERR("sdio_func is not specified"); |
1124 | return 0; |
1125 | } |
1126 | priv = card->priv; |
1127 | |
1128 | if (!priv->adapter->is_suspended) { |
1129 | BT_DBG("device already resumed"); |
1130 | return 0; |
1131 | } |
1132 | |
1133 | priv->adapter->is_suspended = false; |
1134 | hcidev = priv->btmrvl_dev.hcidev; |
1135 | BT_DBG("%s: SDIO resume", hcidev->name); |
1136 | hci_resume_dev(hcidev); |
1137 | priv->hw_wakeup_firmware(priv); |
1138 | priv->adapter->hs_state = HS_DEACTIVATED; |
1139 | BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name); |
1140 | |
1141 | return 0; |
1142 | } |
1143 | |
1144 | static const struct dev_pm_ops btmrvl_sdio_pm_ops = { |
1145 | .suspend = btmrvl_sdio_suspend, |
1146 | .resume = btmrvl_sdio_resume, |
1147 | }; |
1148 | |
1149 | static struct sdio_driver bt_mrvl_sdio = { |
1150 | .name = "btmrvl_sdio", |
1151 | .id_table = btmrvl_sdio_ids, |
1152 | .probe = btmrvl_sdio_probe, |
1153 | .remove = btmrvl_sdio_remove, |
1154 | .drv = { |
1155 | .owner = THIS_MODULE, |
1156 | .pm = &btmrvl_sdio_pm_ops, |
1157 | } |
1158 | }; |
1159 | |
1160 | static int __init btmrvl_sdio_init_module(void) |
1161 | { |
1162 | if (sdio_register_driver(&bt_mrvl_sdio) != 0) { |
1163 | BT_ERR("SDIO Driver Registration Failed"); |
1164 | return -ENODEV; |
1165 | } |
1166 | |
1167 | /* Clear the flag in case user removes the card. */ |
1168 | user_rmmod = 0; |
1169 | |
1170 | return 0; |
1171 | } |
1172 | |
1173 | static void __exit btmrvl_sdio_exit_module(void) |
1174 | { |
1175 | /* Set the flag as user is removing this module. */ |
1176 | user_rmmod = 1; |
1177 | |
1178 | sdio_unregister_driver(&bt_mrvl_sdio); |
1179 | } |
1180 | |
1181 | module_init(btmrvl_sdio_init_module); |
1182 | module_exit(btmrvl_sdio_exit_module); |
1183 | |
1184 | MODULE_AUTHOR("Marvell International Ltd."); |
1185 | MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION); |
1186 | MODULE_VERSION(VERSION); |
1187 | MODULE_LICENSE("GPL v2"); |
1188 | MODULE_FIRMWARE("sd8688_helper.bin"); |
1189 | MODULE_FIRMWARE("sd8688.bin"); |
1190 | MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin"); |
1191 | MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin"); |
1192 |
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