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Merge branch 'akpm' (patches from Andrew)
[mirror_ubuntu-artful-kernel.git] / drivers / bluetooth / btmrvl_sdio.c
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 #include <linux/devcoredump.h>
28
29 #include <net/bluetooth/bluetooth.h>
30 #include <net/bluetooth/hci_core.h>
31
32 #include "btmrvl_drv.h"
33 #include "btmrvl_sdio.h"
34
35 #define VERSION "1.0"
36
37 static struct memory_type_mapping mem_type_mapping_tbl[] = {
38 {"ITCM", NULL, 0, 0xF0},
39 {"DTCM", NULL, 0, 0xF1},
40 {"SQRAM", NULL, 0, 0xF2},
41 {"APU", NULL, 0, 0xF3},
42 {"CIU", NULL, 0, 0xF4},
43 {"ICU", NULL, 0, 0xF5},
44 {"MAC", NULL, 0, 0xF6},
45 {"EXT7", NULL, 0, 0xF7},
46 {"EXT8", NULL, 0, 0xF8},
47 {"EXT9", NULL, 0, 0xF9},
48 {"EXT10", NULL, 0, 0xFA},
49 {"EXT11", NULL, 0, 0xFB},
50 {"EXT12", NULL, 0, 0xFC},
51 {"EXT13", NULL, 0, 0xFD},
52 {"EXTLAST", NULL, 0, 0xFE},
53 };
54
55 /* The btmrvl_sdio_remove() callback function is called
56 * when user removes this module from kernel space or ejects
57 * the card from the slot. The driver handles these 2 cases
58 * differently.
59 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
60 * command is sent to firmware and interrupt will be disabled.
61 * If the card is removed, there is no need to send command
62 * or disable interrupt.
63 *
64 * The variable 'user_rmmod' is used to distinguish these two
65 * scenarios. This flag is initialized as FALSE in case the card
66 * is removed, and will be set to TRUE for module removal when
67 * module_exit function is called.
68 */
69 static u8 user_rmmod;
70 static u8 sdio_ireg;
71
72 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
73 .cfg = 0x03,
74 .host_int_mask = 0x04,
75 .host_intstatus = 0x05,
76 .card_status = 0x20,
77 .sq_read_base_addr_a0 = 0x10,
78 .sq_read_base_addr_a1 = 0x11,
79 .card_fw_status0 = 0x40,
80 .card_fw_status1 = 0x41,
81 .card_rx_len = 0x42,
82 .card_rx_unit = 0x43,
83 .io_port_0 = 0x00,
84 .io_port_1 = 0x01,
85 .io_port_2 = 0x02,
86 .int_read_to_clear = false,
87 };
88 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
89 .cfg = 0x00,
90 .host_int_mask = 0x02,
91 .host_intstatus = 0x03,
92 .card_status = 0x30,
93 .sq_read_base_addr_a0 = 0x40,
94 .sq_read_base_addr_a1 = 0x41,
95 .card_revision = 0x5c,
96 .card_fw_status0 = 0x60,
97 .card_fw_status1 = 0x61,
98 .card_rx_len = 0x62,
99 .card_rx_unit = 0x63,
100 .io_port_0 = 0x78,
101 .io_port_1 = 0x79,
102 .io_port_2 = 0x7a,
103 .int_read_to_clear = false,
104 };
105
106 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
107 .cfg = 0x00,
108 .host_int_mask = 0x08,
109 .host_intstatus = 0x0C,
110 .card_status = 0x5C,
111 .sq_read_base_addr_a0 = 0x6C,
112 .sq_read_base_addr_a1 = 0x6D,
113 .card_revision = 0xC8,
114 .card_fw_status0 = 0x88,
115 .card_fw_status1 = 0x89,
116 .card_rx_len = 0x8A,
117 .card_rx_unit = 0x8B,
118 .io_port_0 = 0xE4,
119 .io_port_1 = 0xE5,
120 .io_port_2 = 0xE6,
121 .int_read_to_clear = true,
122 .host_int_rsr = 0x04,
123 .card_misc_cfg = 0xD8,
124 };
125
126 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
127 .cfg = 0x00,
128 .host_int_mask = 0x02,
129 .host_intstatus = 0x03,
130 .card_status = 0x50,
131 .sq_read_base_addr_a0 = 0x60,
132 .sq_read_base_addr_a1 = 0x61,
133 .card_revision = 0xbc,
134 .card_fw_status0 = 0xc0,
135 .card_fw_status1 = 0xc1,
136 .card_rx_len = 0xc2,
137 .card_rx_unit = 0xc3,
138 .io_port_0 = 0xd8,
139 .io_port_1 = 0xd9,
140 .io_port_2 = 0xda,
141 .int_read_to_clear = true,
142 .host_int_rsr = 0x01,
143 .card_misc_cfg = 0xcc,
144 .fw_dump_ctrl = 0xe2,
145 .fw_dump_start = 0xe3,
146 .fw_dump_end = 0xea,
147 };
148
149 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
150 .helper = "mrvl/sd8688_helper.bin",
151 .firmware = "mrvl/sd8688.bin",
152 .reg = &btmrvl_reg_8688,
153 .support_pscan_win_report = false,
154 .sd_blksz_fw_dl = 64,
155 .supports_fw_dump = false,
156 };
157
158 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
159 .helper = NULL,
160 .firmware = "mrvl/sd8787_uapsta.bin",
161 .reg = &btmrvl_reg_87xx,
162 .support_pscan_win_report = false,
163 .sd_blksz_fw_dl = 256,
164 .supports_fw_dump = false,
165 };
166
167 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
168 .helper = NULL,
169 .firmware = "mrvl/sd8797_uapsta.bin",
170 .reg = &btmrvl_reg_87xx,
171 .support_pscan_win_report = false,
172 .sd_blksz_fw_dl = 256,
173 .supports_fw_dump = false,
174 };
175
176 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
177 .helper = NULL,
178 .firmware = "mrvl/sd8887_uapsta.bin",
179 .reg = &btmrvl_reg_8887,
180 .support_pscan_win_report = true,
181 .sd_blksz_fw_dl = 256,
182 .supports_fw_dump = false,
183 };
184
185 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
186 .helper = NULL,
187 .firmware = "mrvl/sd8897_uapsta.bin",
188 .reg = &btmrvl_reg_8897,
189 .support_pscan_win_report = true,
190 .sd_blksz_fw_dl = 256,
191 .supports_fw_dump = true,
192 };
193
194 static const struct sdio_device_id btmrvl_sdio_ids[] = {
195 /* Marvell SD8688 Bluetooth device */
196 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
197 .driver_data = (unsigned long) &btmrvl_sdio_sd8688 },
198 /* Marvell SD8787 Bluetooth device */
199 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
200 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
201 /* Marvell SD8787 Bluetooth AMP device */
202 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
203 .driver_data = (unsigned long) &btmrvl_sdio_sd8787 },
204 /* Marvell SD8797 Bluetooth device */
205 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
206 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
207 /* Marvell SD8887 Bluetooth device */
208 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
209 .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
210 /* Marvell SD8897 Bluetooth device */
211 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
212 .driver_data = (unsigned long) &btmrvl_sdio_sd8897 },
213
214 { } /* Terminating entry */
215 };
216
217 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
218
219 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
220 {
221 u8 reg;
222 int ret;
223
224 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
225 if (!ret)
226 card->rx_unit = reg;
227
228 return ret;
229 }
230
231 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
232 {
233 u8 fws0, fws1;
234 int ret;
235
236 *dat = 0;
237
238 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
239 if (ret)
240 return -EIO;
241
242 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
243 if (ret)
244 return -EIO;
245
246 *dat = (((u16) fws1) << 8) | fws0;
247
248 return 0;
249 }
250
251 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
252 {
253 u8 reg;
254 int ret;
255
256 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
257 if (!ret)
258 *dat = (u16) reg << card->rx_unit;
259
260 return ret;
261 }
262
263 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
264 u8 mask)
265 {
266 int ret;
267
268 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
269 if (ret) {
270 BT_ERR("Unable to enable the host interrupt!");
271 ret = -EIO;
272 }
273
274 return ret;
275 }
276
277 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
278 u8 mask)
279 {
280 u8 host_int_mask;
281 int ret;
282
283 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
284 if (ret)
285 return -EIO;
286
287 host_int_mask &= ~mask;
288
289 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
290 if (ret < 0) {
291 BT_ERR("Unable to disable the host interrupt!");
292 return -EIO;
293 }
294
295 return 0;
296 }
297
298 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
299 {
300 unsigned int tries;
301 u8 status;
302 int ret;
303
304 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
305 status = sdio_readb(card->func, card->reg->card_status, &ret);
306 if (ret)
307 goto failed;
308 if ((status & bits) == bits)
309 return ret;
310
311 udelay(1);
312 }
313
314 ret = -ETIMEDOUT;
315
316 failed:
317 BT_ERR("FAILED! ret=%d", ret);
318
319 return ret;
320 }
321
322 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
323 int pollnum)
324 {
325 u16 firmwarestat;
326 int tries, ret;
327
328 /* Wait for firmware to become ready */
329 for (tries = 0; tries < pollnum; tries++) {
330 sdio_claim_host(card->func);
331 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
332 sdio_release_host(card->func);
333 if (ret < 0)
334 continue;
335
336 if (firmwarestat == FIRMWARE_READY)
337 return 0;
338
339 msleep(10);
340 }
341
342 return -ETIMEDOUT;
343 }
344
345 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
346 {
347 const struct firmware *fw_helper = NULL;
348 const u8 *helper = NULL;
349 int ret;
350 void *tmphlprbuf = NULL;
351 int tmphlprbufsz, hlprblknow, helperlen;
352 u8 *helperbuf;
353 u32 tx_len;
354
355 ret = request_firmware(&fw_helper, card->helper,
356 &card->func->dev);
357 if ((ret < 0) || !fw_helper) {
358 BT_ERR("request_firmware(helper) failed, error code = %d",
359 ret);
360 ret = -ENOENT;
361 goto done;
362 }
363
364 helper = fw_helper->data;
365 helperlen = fw_helper->size;
366
367 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
368 helperlen, SDIO_BLOCK_SIZE);
369
370 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
371
372 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
373 if (!tmphlprbuf) {
374 BT_ERR("Unable to allocate buffer for helper."
375 " Terminating download");
376 ret = -ENOMEM;
377 goto done;
378 }
379
380 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
381
382 /* Perform helper data transfer */
383 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
384 - SDIO_HEADER_LEN;
385 hlprblknow = 0;
386
387 do {
388 ret = btmrvl_sdio_poll_card_status(card,
389 CARD_IO_READY | DN_LD_CARD_RDY);
390 if (ret < 0) {
391 BT_ERR("Helper download poll status timeout @ %d",
392 hlprblknow);
393 goto done;
394 }
395
396 /* Check if there is more data? */
397 if (hlprblknow >= helperlen)
398 break;
399
400 if (helperlen - hlprblknow < tx_len)
401 tx_len = helperlen - hlprblknow;
402
403 /* Little-endian */
404 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
405 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
406 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
407 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
408
409 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
410 tx_len);
411
412 /* Now send the data */
413 ret = sdio_writesb(card->func, card->ioport, helperbuf,
414 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
415 if (ret < 0) {
416 BT_ERR("IO error during helper download @ %d",
417 hlprblknow);
418 goto done;
419 }
420
421 hlprblknow += tx_len;
422 } while (true);
423
424 BT_DBG("Transferring helper image EOF block");
425
426 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
427
428 ret = sdio_writesb(card->func, card->ioport, helperbuf,
429 SDIO_BLOCK_SIZE);
430 if (ret < 0) {
431 BT_ERR("IO error in writing helper image EOF block");
432 goto done;
433 }
434
435 ret = 0;
436
437 done:
438 kfree(tmphlprbuf);
439 release_firmware(fw_helper);
440 return ret;
441 }
442
443 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
444 {
445 const struct firmware *fw_firmware = NULL;
446 const u8 *firmware = NULL;
447 int firmwarelen, tmpfwbufsz, ret;
448 unsigned int tries, offset;
449 u8 base0, base1;
450 void *tmpfwbuf = NULL;
451 u8 *fwbuf;
452 u16 len, blksz_dl = card->sd_blksz_fw_dl;
453 int txlen = 0, tx_blocks = 0, count = 0;
454
455 ret = request_firmware(&fw_firmware, card->firmware,
456 &card->func->dev);
457 if ((ret < 0) || !fw_firmware) {
458 BT_ERR("request_firmware(firmware) failed, error code = %d",
459 ret);
460 ret = -ENOENT;
461 goto done;
462 }
463
464 firmware = fw_firmware->data;
465 firmwarelen = fw_firmware->size;
466
467 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
468
469 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
470 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
471 if (!tmpfwbuf) {
472 BT_ERR("Unable to allocate buffer for firmware."
473 " Terminating download");
474 ret = -ENOMEM;
475 goto done;
476 }
477
478 /* Ensure aligned firmware buffer */
479 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
480
481 /* Perform firmware data transfer */
482 offset = 0;
483 do {
484 ret = btmrvl_sdio_poll_card_status(card,
485 CARD_IO_READY | DN_LD_CARD_RDY);
486 if (ret < 0) {
487 BT_ERR("FW download with helper poll status"
488 " timeout @ %d", offset);
489 goto done;
490 }
491
492 /* Check if there is more data ? */
493 if (offset >= firmwarelen)
494 break;
495
496 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
497 base0 = sdio_readb(card->func,
498 card->reg->sq_read_base_addr_a0, &ret);
499 if (ret) {
500 BT_ERR("BASE0 register read failed:"
501 " base0 = 0x%04X(%d)."
502 " Terminating download",
503 base0, base0);
504 ret = -EIO;
505 goto done;
506 }
507 base1 = sdio_readb(card->func,
508 card->reg->sq_read_base_addr_a1, &ret);
509 if (ret) {
510 BT_ERR("BASE1 register read failed:"
511 " base1 = 0x%04X(%d)."
512 " Terminating download",
513 base1, base1);
514 ret = -EIO;
515 goto done;
516 }
517
518 len = (((u16) base1) << 8) | base0;
519 if (len)
520 break;
521
522 udelay(10);
523 }
524
525 if (!len)
526 break;
527 else if (len > BTM_UPLD_SIZE) {
528 BT_ERR("FW download failure @%d, invalid length %d",
529 offset, len);
530 ret = -EINVAL;
531 goto done;
532 }
533
534 txlen = len;
535
536 if (len & BIT(0)) {
537 count++;
538 if (count > MAX_WRITE_IOMEM_RETRY) {
539 BT_ERR("FW download failure @%d, "
540 "over max retry count", offset);
541 ret = -EIO;
542 goto done;
543 }
544 BT_ERR("FW CRC error indicated by the helper: "
545 "len = 0x%04X, txlen = %d", len, txlen);
546 len &= ~BIT(0);
547 /* Set txlen to 0 so as to resend from same offset */
548 txlen = 0;
549 } else {
550 count = 0;
551
552 /* Last block ? */
553 if (firmwarelen - offset < txlen)
554 txlen = firmwarelen - offset;
555
556 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
557
558 memcpy(fwbuf, &firmware[offset], txlen);
559 }
560
561 ret = sdio_writesb(card->func, card->ioport, fwbuf,
562 tx_blocks * blksz_dl);
563
564 if (ret < 0) {
565 BT_ERR("FW download, writesb(%d) failed @%d",
566 count, offset);
567 sdio_writeb(card->func, HOST_CMD53_FIN,
568 card->reg->cfg, &ret);
569 if (ret)
570 BT_ERR("writeb failed (CFG)");
571 }
572
573 offset += txlen;
574 } while (true);
575
576 BT_DBG("FW download over, size %d bytes", offset);
577
578 ret = 0;
579
580 done:
581 kfree(tmpfwbuf);
582 release_firmware(fw_firmware);
583 return ret;
584 }
585
586 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
587 {
588 u16 buf_len = 0;
589 int ret, num_blocks, blksz;
590 struct sk_buff *skb = NULL;
591 u32 type;
592 u8 *payload = NULL;
593 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
594 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
595
596 if (!card || !card->func) {
597 BT_ERR("card or function is NULL!");
598 ret = -EINVAL;
599 goto exit;
600 }
601
602 /* Read the length of data to be transferred */
603 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
604 if (ret < 0) {
605 BT_ERR("read rx_len failed");
606 ret = -EIO;
607 goto exit;
608 }
609
610 blksz = SDIO_BLOCK_SIZE;
611 num_blocks = DIV_ROUND_UP(buf_len, blksz);
612
613 if (buf_len <= SDIO_HEADER_LEN
614 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
615 BT_ERR("invalid packet length: %d", buf_len);
616 ret = -EINVAL;
617 goto exit;
618 }
619
620 /* Allocate buffer */
621 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_ATOMIC);
622 if (skb == NULL) {
623 BT_ERR("No free skb");
624 ret = -ENOMEM;
625 goto exit;
626 }
627
628 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
629 skb_put(skb, (unsigned long) skb->data &
630 (BTSDIO_DMA_ALIGN - 1));
631 skb_pull(skb, (unsigned long) skb->data &
632 (BTSDIO_DMA_ALIGN - 1));
633 }
634
635 payload = skb->data;
636
637 ret = sdio_readsb(card->func, payload, card->ioport,
638 num_blocks * blksz);
639 if (ret < 0) {
640 BT_ERR("readsb failed: %d", ret);
641 ret = -EIO;
642 goto exit;
643 }
644
645 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
646 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
647 */
648
649 buf_len = payload[0];
650 buf_len |= payload[1] << 8;
651 buf_len |= payload[2] << 16;
652
653 if (buf_len > blksz * num_blocks) {
654 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
655 buf_len, blksz * num_blocks);
656 ret = -EIO;
657 goto exit;
658 }
659
660 type = payload[3];
661
662 switch (type) {
663 case HCI_ACLDATA_PKT:
664 case HCI_SCODATA_PKT:
665 case HCI_EVENT_PKT:
666 bt_cb(skb)->pkt_type = type;
667 skb_put(skb, buf_len);
668 skb_pull(skb, SDIO_HEADER_LEN);
669
670 if (type == HCI_EVENT_PKT) {
671 if (btmrvl_check_evtpkt(priv, skb))
672 hci_recv_frame(hdev, skb);
673 } else {
674 hci_recv_frame(hdev, skb);
675 }
676
677 hdev->stat.byte_rx += buf_len;
678 break;
679
680 case MRVL_VENDOR_PKT:
681 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
682 skb_put(skb, buf_len);
683 skb_pull(skb, SDIO_HEADER_LEN);
684
685 if (btmrvl_process_event(priv, skb))
686 hci_recv_frame(hdev, skb);
687
688 hdev->stat.byte_rx += buf_len;
689 break;
690
691 default:
692 BT_ERR("Unknown packet type:%d", type);
693 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
694
695 kfree_skb(skb);
696 skb = NULL;
697 break;
698 }
699
700 exit:
701 if (ret) {
702 hdev->stat.err_rx++;
703 kfree_skb(skb);
704 }
705
706 return ret;
707 }
708
709 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
710 {
711 ulong flags;
712 u8 ireg;
713 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
714
715 spin_lock_irqsave(&priv->driver_lock, flags);
716 ireg = sdio_ireg;
717 sdio_ireg = 0;
718 spin_unlock_irqrestore(&priv->driver_lock, flags);
719
720 sdio_claim_host(card->func);
721 if (ireg & DN_LD_HOST_INT_STATUS) {
722 if (priv->btmrvl_dev.tx_dnld_rdy)
723 BT_DBG("tx_done already received: "
724 " int_status=0x%x", ireg);
725 else
726 priv->btmrvl_dev.tx_dnld_rdy = true;
727 }
728
729 if (ireg & UP_LD_HOST_INT_STATUS)
730 btmrvl_sdio_card_to_host(priv);
731
732 sdio_release_host(card->func);
733
734 return 0;
735 }
736
737 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
738 {
739 struct btmrvl_adapter *adapter = card->priv->adapter;
740 int ret;
741
742 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
743 if (ret) {
744 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
745 return ret;
746 }
747
748 *ireg = adapter->hw_regs[card->reg->host_intstatus];
749 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
750
751 return 0;
752 }
753
754 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
755 {
756 int ret;
757
758 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
759 if (ret) {
760 BT_ERR("sdio_readb: read int status failed: %d", ret);
761 return ret;
762 }
763
764 if (*ireg) {
765 /*
766 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
767 * Clear the interrupt status register and re-enable the
768 * interrupt.
769 */
770 BT_DBG("int_status = 0x%x", *ireg);
771
772 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
773 UP_LD_HOST_INT_STATUS),
774 card->reg->host_intstatus, &ret);
775 if (ret) {
776 BT_ERR("sdio_writeb: clear int status failed: %d", ret);
777 return ret;
778 }
779 }
780
781 return 0;
782 }
783
784 static void btmrvl_sdio_interrupt(struct sdio_func *func)
785 {
786 struct btmrvl_private *priv;
787 struct btmrvl_sdio_card *card;
788 ulong flags;
789 u8 ireg = 0;
790 int ret;
791
792 card = sdio_get_drvdata(func);
793 if (!card || !card->priv) {
794 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
795 func, card);
796 return;
797 }
798
799 priv = card->priv;
800
801 if (card->reg->int_read_to_clear)
802 ret = btmrvl_sdio_read_to_clear(card, &ireg);
803 else
804 ret = btmrvl_sdio_write_to_clear(card, &ireg);
805
806 if (ret)
807 return;
808
809 spin_lock_irqsave(&priv->driver_lock, flags);
810 sdio_ireg |= ireg;
811 spin_unlock_irqrestore(&priv->driver_lock, flags);
812
813 btmrvl_interrupt(priv);
814 }
815
816 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
817 {
818 struct sdio_func *func;
819 u8 reg;
820 int ret = 0;
821
822 if (!card || !card->func) {
823 BT_ERR("Error: card or function is NULL!");
824 ret = -EINVAL;
825 goto failed;
826 }
827
828 func = card->func;
829
830 sdio_claim_host(func);
831
832 ret = sdio_enable_func(func);
833 if (ret) {
834 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
835 ret = -EIO;
836 goto release_host;
837 }
838
839 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
840 if (ret) {
841 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
842 ret = -EIO;
843 goto disable_func;
844 }
845
846 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
847 if (ret) {
848 BT_ERR("cannot set SDIO block size");
849 ret = -EIO;
850 goto release_irq;
851 }
852
853 reg = sdio_readb(func, card->reg->io_port_0, &ret);
854 if (ret < 0) {
855 ret = -EIO;
856 goto release_irq;
857 }
858
859 card->ioport = reg;
860
861 reg = sdio_readb(func, card->reg->io_port_1, &ret);
862 if (ret < 0) {
863 ret = -EIO;
864 goto release_irq;
865 }
866
867 card->ioport |= (reg << 8);
868
869 reg = sdio_readb(func, card->reg->io_port_2, &ret);
870 if (ret < 0) {
871 ret = -EIO;
872 goto release_irq;
873 }
874
875 card->ioport |= (reg << 16);
876
877 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
878
879 if (card->reg->int_read_to_clear) {
880 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
881 if (ret < 0) {
882 ret = -EIO;
883 goto release_irq;
884 }
885 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
886 if (ret < 0) {
887 ret = -EIO;
888 goto release_irq;
889 }
890
891 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
892 if (ret < 0) {
893 ret = -EIO;
894 goto release_irq;
895 }
896 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
897 if (ret < 0) {
898 ret = -EIO;
899 goto release_irq;
900 }
901 }
902
903 sdio_set_drvdata(func, card);
904
905 sdio_release_host(func);
906
907 return 0;
908
909 release_irq:
910 sdio_release_irq(func);
911
912 disable_func:
913 sdio_disable_func(func);
914
915 release_host:
916 sdio_release_host(func);
917
918 failed:
919 return ret;
920 }
921
922 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
923 {
924 if (card && card->func) {
925 sdio_claim_host(card->func);
926 sdio_release_irq(card->func);
927 sdio_disable_func(card->func);
928 sdio_release_host(card->func);
929 sdio_set_drvdata(card->func, NULL);
930 }
931
932 return 0;
933 }
934
935 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
936 {
937 int ret;
938
939 if (!card || !card->func)
940 return -EINVAL;
941
942 sdio_claim_host(card->func);
943
944 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
945
946 btmrvl_sdio_get_rx_unit(card);
947
948 sdio_release_host(card->func);
949
950 return ret;
951 }
952
953 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
954 {
955 int ret;
956
957 if (!card || !card->func)
958 return -EINVAL;
959
960 sdio_claim_host(card->func);
961
962 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
963
964 sdio_release_host(card->func);
965
966 return ret;
967 }
968
969 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
970 u8 *payload, u16 nb)
971 {
972 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
973 int ret = 0;
974 int buf_block_len;
975 int blksz;
976 int i = 0;
977 u8 *buf = NULL;
978 void *tmpbuf = NULL;
979 int tmpbufsz;
980
981 if (!card || !card->func) {
982 BT_ERR("card or function is NULL!");
983 return -EINVAL;
984 }
985
986 buf = payload;
987 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
988 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
989 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
990 if (!tmpbuf)
991 return -ENOMEM;
992 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
993 memcpy(buf, payload, nb);
994 }
995
996 blksz = SDIO_BLOCK_SIZE;
997 buf_block_len = DIV_ROUND_UP(nb, blksz);
998
999 sdio_claim_host(card->func);
1000
1001 do {
1002 /* Transfer data to card */
1003 ret = sdio_writesb(card->func, card->ioport, buf,
1004 buf_block_len * blksz);
1005 if (ret < 0) {
1006 i++;
1007 BT_ERR("i=%d writesb failed: %d", i, ret);
1008 BT_ERR("hex: %*ph", nb, payload);
1009 ret = -EIO;
1010 if (i > MAX_WRITE_IOMEM_RETRY)
1011 goto exit;
1012 }
1013 } while (ret);
1014
1015 priv->btmrvl_dev.tx_dnld_rdy = false;
1016
1017 exit:
1018 sdio_release_host(card->func);
1019 kfree(tmpbuf);
1020
1021 return ret;
1022 }
1023
1024 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1025 {
1026 int ret;
1027 u8 fws0;
1028 int pollnum = MAX_POLL_TRIES;
1029
1030 if (!card || !card->func) {
1031 BT_ERR("card or function is NULL!");
1032 return -EINVAL;
1033 }
1034
1035 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1036 BT_DBG("Firmware already downloaded!");
1037 return 0;
1038 }
1039
1040 sdio_claim_host(card->func);
1041
1042 /* Check if other function driver is downloading the firmware */
1043 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1044 if (ret) {
1045 BT_ERR("Failed to read FW downloading status!");
1046 ret = -EIO;
1047 goto done;
1048 }
1049 if (fws0) {
1050 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1051
1052 /* Give other function more time to download the firmware */
1053 pollnum *= 10;
1054 } else {
1055 if (card->helper) {
1056 ret = btmrvl_sdio_download_helper(card);
1057 if (ret) {
1058 BT_ERR("Failed to download helper!");
1059 ret = -EIO;
1060 goto done;
1061 }
1062 }
1063
1064 if (btmrvl_sdio_download_fw_w_helper(card)) {
1065 BT_ERR("Failed to download firmware!");
1066 ret = -EIO;
1067 goto done;
1068 }
1069 }
1070
1071 sdio_release_host(card->func);
1072
1073 /*
1074 * winner or not, with this test the FW synchronizes when the
1075 * module can continue its initialization
1076 */
1077 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1078 BT_ERR("FW failed to be active in time!");
1079 return -ETIMEDOUT;
1080 }
1081
1082 return 0;
1083
1084 done:
1085 sdio_release_host(card->func);
1086 return ret;
1087 }
1088
1089 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1090 {
1091 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1092 int ret = 0;
1093
1094 if (!card || !card->func) {
1095 BT_ERR("card or function is NULL!");
1096 return -EINVAL;
1097 }
1098
1099 sdio_claim_host(card->func);
1100
1101 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1102
1103 sdio_release_host(card->func);
1104
1105 BT_DBG("wake up firmware");
1106
1107 return ret;
1108 }
1109
1110 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1111 {
1112 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1113 int ret = 0;
1114 unsigned int reg, reg_start, reg_end;
1115 char buf[256], *ptr;
1116 u8 loop, func, data;
1117 int MAX_LOOP = 2;
1118
1119 btmrvl_sdio_wakeup_fw(priv);
1120 sdio_claim_host(card->func);
1121
1122 for (loop = 0; loop < MAX_LOOP; loop++) {
1123 memset(buf, 0, sizeof(buf));
1124 ptr = buf;
1125
1126 if (loop == 0) {
1127 /* Read the registers of SDIO function0 */
1128 func = loop;
1129 reg_start = 0;
1130 reg_end = 9;
1131 } else {
1132 func = 2;
1133 reg_start = 0;
1134 reg_end = 0x09;
1135 }
1136
1137 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1138 func, reg_start, reg_end);
1139 for (reg = reg_start; reg <= reg_end; reg++) {
1140 if (func == 0)
1141 data = sdio_f0_readb(card->func, reg, &ret);
1142 else
1143 data = sdio_readb(card->func, reg, &ret);
1144
1145 if (!ret) {
1146 ptr += sprintf(ptr, "%02x ", data);
1147 } else {
1148 ptr += sprintf(ptr, "ERR");
1149 break;
1150 }
1151 }
1152
1153 BT_INFO("%s", buf);
1154 }
1155
1156 sdio_release_host(card->func);
1157 }
1158
1159 /* This function read/write firmware */
1160 static enum
1161 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1162 u8 doneflag)
1163 {
1164 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1165 int ret, tries;
1166 u8 ctrl_data = 0;
1167
1168 sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1169 &ret);
1170
1171 if (ret) {
1172 BT_ERR("SDIO write err");
1173 return RDWR_STATUS_FAILURE;
1174 }
1175
1176 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1177 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1178 &ret);
1179
1180 if (ret) {
1181 BT_ERR("SDIO read err");
1182 return RDWR_STATUS_FAILURE;
1183 }
1184
1185 if (ctrl_data == FW_DUMP_DONE)
1186 break;
1187 if (doneflag && ctrl_data == doneflag)
1188 return RDWR_STATUS_DONE;
1189 if (ctrl_data != FW_DUMP_HOST_READY) {
1190 BT_INFO("The ctrl reg was changed, re-try again!");
1191 sdio_writeb(card->func, FW_DUMP_HOST_READY,
1192 card->reg->fw_dump_ctrl, &ret);
1193 if (ret) {
1194 BT_ERR("SDIO write err");
1195 return RDWR_STATUS_FAILURE;
1196 }
1197 }
1198 usleep_range(100, 200);
1199 }
1200
1201 if (ctrl_data == FW_DUMP_HOST_READY) {
1202 BT_ERR("Fail to pull ctrl_data");
1203 return RDWR_STATUS_FAILURE;
1204 }
1205
1206 return RDWR_STATUS_SUCCESS;
1207 }
1208
1209 /* This function dump sdio register and memory data */
1210 static void btmrvl_sdio_dump_firmware(struct btmrvl_private *priv)
1211 {
1212 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1213 int ret = 0;
1214 unsigned int reg, reg_start, reg_end;
1215 enum rdwr_status stat;
1216 u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1217 u8 dump_num, idx, i, read_reg, doneflag = 0;
1218 u32 memory_size, fw_dump_len = 0;
1219
1220 /* dump sdio register first */
1221 btmrvl_sdio_dump_regs(priv);
1222
1223 if (!card->supports_fw_dump) {
1224 BT_ERR("Firmware dump not supported for this card!");
1225 return;
1226 }
1227
1228 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1229 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1230
1231 if (entry->mem_ptr) {
1232 vfree(entry->mem_ptr);
1233 entry->mem_ptr = NULL;
1234 }
1235 entry->mem_size = 0;
1236 }
1237
1238 btmrvl_sdio_wakeup_fw(priv);
1239 sdio_claim_host(card->func);
1240
1241 BT_INFO("== btmrvl firmware dump start ==");
1242
1243 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1244 if (stat == RDWR_STATUS_FAILURE)
1245 goto done;
1246
1247 reg = card->reg->fw_dump_start;
1248 /* Read the number of the memories which will dump */
1249 dump_num = sdio_readb(card->func, reg, &ret);
1250
1251 if (ret) {
1252 BT_ERR("SDIO read memory length err");
1253 goto done;
1254 }
1255
1256 /* Read the length of every memory which will dump */
1257 for (idx = 0; idx < dump_num; idx++) {
1258 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1259
1260 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1261 if (stat == RDWR_STATUS_FAILURE)
1262 goto done;
1263
1264 memory_size = 0;
1265 reg = card->reg->fw_dump_start;
1266 for (i = 0; i < 4; i++) {
1267 read_reg = sdio_readb(card->func, reg, &ret);
1268 if (ret) {
1269 BT_ERR("SDIO read err");
1270 goto done;
1271 }
1272 memory_size |= (read_reg << i*8);
1273 reg++;
1274 }
1275
1276 if (memory_size == 0) {
1277 BT_INFO("Firmware dump finished!");
1278 break;
1279 }
1280
1281 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1282 entry->mem_ptr = vzalloc(memory_size + 1);
1283 entry->mem_size = memory_size;
1284 if (!entry->mem_ptr) {
1285 BT_ERR("Vzalloc %s failed", entry->mem_name);
1286 goto done;
1287 }
1288
1289 fw_dump_len += (strlen("========Start dump ") +
1290 strlen(entry->mem_name) +
1291 strlen("========\n") +
1292 (memory_size + 1) +
1293 strlen("\n========End dump========\n"));
1294
1295 dbg_ptr = entry->mem_ptr;
1296 end_ptr = dbg_ptr + memory_size;
1297
1298 doneflag = entry->done_flag;
1299 BT_INFO("Start %s output, please wait...",
1300 entry->mem_name);
1301
1302 do {
1303 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1304 if (stat == RDWR_STATUS_FAILURE)
1305 goto done;
1306
1307 reg_start = card->reg->fw_dump_start;
1308 reg_end = card->reg->fw_dump_end;
1309 for (reg = reg_start; reg <= reg_end; reg++) {
1310 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1311 if (ret) {
1312 BT_ERR("SDIO read err");
1313 goto done;
1314 }
1315 if (dbg_ptr < end_ptr)
1316 dbg_ptr++;
1317 else
1318 BT_ERR("Allocated buffer not enough");
1319 }
1320
1321 if (stat != RDWR_STATUS_DONE) {
1322 continue;
1323 } else {
1324 BT_INFO("%s done: size=0x%tx",
1325 entry->mem_name,
1326 dbg_ptr - entry->mem_ptr);
1327 break;
1328 }
1329 } while (1);
1330 }
1331
1332 BT_INFO("== btmrvl firmware dump end ==");
1333
1334 done:
1335 sdio_release_host(card->func);
1336
1337 if (fw_dump_len == 0)
1338 return;
1339
1340 fw_dump_data = vzalloc(fw_dump_len+1);
1341 if (!fw_dump_data) {
1342 BT_ERR("Vzalloc fw_dump_data fail!");
1343 return;
1344 }
1345 fw_dump_ptr = fw_dump_data;
1346
1347 /* Dump all the memory data into single file, a userspace script will
1348 be used to split all the memory data to multiple files*/
1349 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1350 for (idx = 0; idx < dump_num; idx++) {
1351 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1352
1353 if (entry->mem_ptr) {
1354 strcpy(fw_dump_ptr, "========Start dump ");
1355 fw_dump_ptr += strlen("========Start dump ");
1356
1357 strcpy(fw_dump_ptr, entry->mem_name);
1358 fw_dump_ptr += strlen(entry->mem_name);
1359
1360 strcpy(fw_dump_ptr, "========\n");
1361 fw_dump_ptr += strlen("========\n");
1362
1363 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1364 fw_dump_ptr += entry->mem_size;
1365
1366 strcpy(fw_dump_ptr, "\n========End dump========\n");
1367 fw_dump_ptr += strlen("\n========End dump========\n");
1368
1369 vfree(mem_type_mapping_tbl[idx].mem_ptr);
1370 mem_type_mapping_tbl[idx].mem_ptr = NULL;
1371 }
1372 }
1373
1374 /* fw_dump_data will be free in device coredump release function
1375 after 5 min*/
1376 dev_coredumpv(&priv->btmrvl_dev.hcidev->dev, fw_dump_data,
1377 fw_dump_len, GFP_KERNEL);
1378 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1379 }
1380
1381 static int btmrvl_sdio_probe(struct sdio_func *func,
1382 const struct sdio_device_id *id)
1383 {
1384 int ret = 0;
1385 struct btmrvl_private *priv = NULL;
1386 struct btmrvl_sdio_card *card = NULL;
1387
1388 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1389 id->vendor, id->device, id->class, func->num);
1390
1391 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1392 if (!card)
1393 return -ENOMEM;
1394
1395 card->func = func;
1396
1397 if (id->driver_data) {
1398 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1399 card->helper = data->helper;
1400 card->firmware = data->firmware;
1401 card->reg = data->reg;
1402 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1403 card->support_pscan_win_report = data->support_pscan_win_report;
1404 card->supports_fw_dump = data->supports_fw_dump;
1405 }
1406
1407 if (btmrvl_sdio_register_dev(card) < 0) {
1408 BT_ERR("Failed to register BT device!");
1409 return -ENODEV;
1410 }
1411
1412 /* Disable the interrupts on the card */
1413 btmrvl_sdio_disable_host_int(card);
1414
1415 if (btmrvl_sdio_download_fw(card)) {
1416 BT_ERR("Downloading firmware failed!");
1417 ret = -ENODEV;
1418 goto unreg_dev;
1419 }
1420
1421 btmrvl_sdio_enable_host_int(card);
1422
1423 priv = btmrvl_add_card(card);
1424 if (!priv) {
1425 BT_ERR("Initializing card failed!");
1426 ret = -ENODEV;
1427 goto disable_host_int;
1428 }
1429
1430 card->priv = priv;
1431
1432 /* Initialize the interface specific function pointers */
1433 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1434 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1435 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1436 priv->firmware_dump = btmrvl_sdio_dump_firmware;
1437
1438 if (btmrvl_register_hdev(priv)) {
1439 BT_ERR("Register hdev failed!");
1440 ret = -ENODEV;
1441 goto disable_host_int;
1442 }
1443
1444 return 0;
1445
1446 disable_host_int:
1447 btmrvl_sdio_disable_host_int(card);
1448 unreg_dev:
1449 btmrvl_sdio_unregister_dev(card);
1450 return ret;
1451 }
1452
1453 static void btmrvl_sdio_remove(struct sdio_func *func)
1454 {
1455 struct btmrvl_sdio_card *card;
1456
1457 if (func) {
1458 card = sdio_get_drvdata(func);
1459 if (card) {
1460 /* Send SHUTDOWN command & disable interrupt
1461 * if user removes the module.
1462 */
1463 if (user_rmmod) {
1464 btmrvl_send_module_cfg_cmd(card->priv,
1465 MODULE_SHUTDOWN_REQ);
1466 btmrvl_sdio_disable_host_int(card);
1467 }
1468 BT_DBG("unregester dev");
1469 btmrvl_sdio_unregister_dev(card);
1470 btmrvl_remove_card(card->priv);
1471 }
1472 }
1473 }
1474
1475 static int btmrvl_sdio_suspend(struct device *dev)
1476 {
1477 struct sdio_func *func = dev_to_sdio_func(dev);
1478 struct btmrvl_sdio_card *card;
1479 struct btmrvl_private *priv;
1480 mmc_pm_flag_t pm_flags;
1481 struct hci_dev *hcidev;
1482
1483 if (func) {
1484 pm_flags = sdio_get_host_pm_caps(func);
1485 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1486 pm_flags);
1487 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1488 BT_ERR("%s: cannot remain alive while suspended",
1489 sdio_func_id(func));
1490 return -ENOSYS;
1491 }
1492 card = sdio_get_drvdata(func);
1493 if (!card || !card->priv) {
1494 BT_ERR("card or priv structure is not valid");
1495 return 0;
1496 }
1497 } else {
1498 BT_ERR("sdio_func is not specified");
1499 return 0;
1500 }
1501
1502 priv = card->priv;
1503 hcidev = priv->btmrvl_dev.hcidev;
1504 BT_DBG("%s: SDIO suspend", hcidev->name);
1505 hci_suspend_dev(hcidev);
1506 skb_queue_purge(&priv->adapter->tx_queue);
1507
1508 if (priv->adapter->hs_state != HS_ACTIVATED) {
1509 if (btmrvl_enable_hs(priv)) {
1510 BT_ERR("HS not actived, suspend failed!");
1511 return -EBUSY;
1512 }
1513 }
1514
1515 priv->adapter->is_suspended = true;
1516
1517 /* We will keep the power when hs enabled successfully */
1518 if (priv->adapter->hs_state == HS_ACTIVATED) {
1519 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1520 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1521 } else {
1522 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1523 return 0;
1524 }
1525 }
1526
1527 static int btmrvl_sdio_resume(struct device *dev)
1528 {
1529 struct sdio_func *func = dev_to_sdio_func(dev);
1530 struct btmrvl_sdio_card *card;
1531 struct btmrvl_private *priv;
1532 mmc_pm_flag_t pm_flags;
1533 struct hci_dev *hcidev;
1534
1535 if (func) {
1536 pm_flags = sdio_get_host_pm_caps(func);
1537 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1538 pm_flags);
1539 card = sdio_get_drvdata(func);
1540 if (!card || !card->priv) {
1541 BT_ERR("card or priv structure is not valid");
1542 return 0;
1543 }
1544 } else {
1545 BT_ERR("sdio_func is not specified");
1546 return 0;
1547 }
1548 priv = card->priv;
1549
1550 if (!priv->adapter->is_suspended) {
1551 BT_DBG("device already resumed");
1552 return 0;
1553 }
1554
1555 priv->hw_wakeup_firmware(priv);
1556 priv->adapter->hs_state = HS_DEACTIVATED;
1557 hcidev = priv->btmrvl_dev.hcidev;
1558 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1559 priv->adapter->is_suspended = false;
1560 BT_DBG("%s: SDIO resume", hcidev->name);
1561 hci_resume_dev(hcidev);
1562
1563 return 0;
1564 }
1565
1566 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1567 .suspend = btmrvl_sdio_suspend,
1568 .resume = btmrvl_sdio_resume,
1569 };
1570
1571 static struct sdio_driver bt_mrvl_sdio = {
1572 .name = "btmrvl_sdio",
1573 .id_table = btmrvl_sdio_ids,
1574 .probe = btmrvl_sdio_probe,
1575 .remove = btmrvl_sdio_remove,
1576 .drv = {
1577 .owner = THIS_MODULE,
1578 .pm = &btmrvl_sdio_pm_ops,
1579 }
1580 };
1581
1582 static int __init btmrvl_sdio_init_module(void)
1583 {
1584 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1585 BT_ERR("SDIO Driver Registration Failed");
1586 return -ENODEV;
1587 }
1588
1589 /* Clear the flag in case user removes the card. */
1590 user_rmmod = 0;
1591
1592 return 0;
1593 }
1594
1595 static void __exit btmrvl_sdio_exit_module(void)
1596 {
1597 /* Set the flag as user is removing this module. */
1598 user_rmmod = 1;
1599
1600 sdio_unregister_driver(&bt_mrvl_sdio);
1601 }
1602
1603 module_init(btmrvl_sdio_init_module);
1604 module_exit(btmrvl_sdio_exit_module);
1605
1606 MODULE_AUTHOR("Marvell International Ltd.");
1607 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1608 MODULE_VERSION(VERSION);
1609 MODULE_LICENSE("GPL v2");
1610 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1611 MODULE_FIRMWARE("mrvl/sd8688.bin");
1612 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1613 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1614 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1615 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
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