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Bluetooth: Fix last few compiler warning within Marvell core driver
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / bluetooth / btmrvl_sdio.c
CommitLineData
789221ec
BZ		 1/**
2 * Marvell BT-over-SDIO driver: SDIO interface related functions.
3 *
4 * Copyright (C) 2009, Marvell International Ltd.
5 *
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
13 *
14 *
15 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
17 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
18 * this warranty disclaimer.
19 **/
20
21#include <linux/firmware.h>
22
23#include <linux/mmc/sdio_ids.h>
24#include <linux/mmc/sdio_func.h>
25
26#include <net/bluetooth/bluetooth.h>
27#include <net/bluetooth/hci_core.h>
28
29#include "btmrvl_drv.h"
30#include "btmrvl_sdio.h"
31
32#define VERSION "1.0"
33
789221ec
BZ		 34/* The btmrvl_sdio_remove() callback function is called
35 * when user removes this module from kernel space or ejects
36 * the card from the slot. The driver handles these 2 cases
37 * differently.
38 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
39 * command is sent to firmware and interrupt will be disabled.
40 * If the card is removed, there is no need to send command
41 * or disable interrupt.
42 *
43 * The variable 'user_rmmod' is used to distinguish these two
44 * scenarios. This flag is initialized as FALSE in case the card
45 * is removed, and will be set to TRUE for module removal when
46 * module_exit function is called.
47 */
48static u8 user_rmmod;
49
dcf47f3b
MH		 50static const struct btmrvl_sdio_device btmrvl_sdio_sd6888 = {
51 .helper = "sd8688_helper.bin",
52 .firmware = "sd8688.bin",
789221ec
BZ		 53};
54
dcf47f3b
MH		 55static const struct sdio_device_id btmrvl_sdio_ids[] = {
56 /* Marvell SD8688 Bluetooth device */
57 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
58 .driver_data = (unsigned long) &btmrvl_sdio_sd6888 },
789221ec 59
dcf47f3b 60 { } /* Terminating entry */
789221ec
BZ		 61};
62
dcf47f3b
MH		 63MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
64
789221ec
BZ		 65static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
66{
67 u8 reg;
68 int ret;
69
70 BT_DBG("Enter");
71
72 reg = sdio_readb(card->func, CARD_RX_UNIT_REG, &ret);
73 if (!ret)
74 card->rx_unit = reg;
75
76 BT_DBG("Leave");
77
78 return ret;
79}
80
81static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
82{
83 int ret;
84 u8 fws0, fws1;
85
86 BT_DBG("Enter");
87
88 *dat = 0;
89
90 fws0 = sdio_readb(card->func, CARD_FW_STATUS0_REG, &ret);
91
92 if (!ret)
93 fws1 = sdio_readb(card->func, CARD_FW_STATUS1_REG, &ret);
94
95 if (ret) {
96 BT_DBG("Leave");
97 return -EIO;
98 }
99
100 *dat = (((u16) fws1) << 8) | fws0;
101
102 BT_DBG("Leave");
103
104 return 0;
105}
106
107static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
108{
109 int ret;
110 u8 reg;
111
112 BT_DBG("Enter");
113
114 reg = sdio_readb(card->func, CARD_RX_LEN_REG, &ret);
115 if (!ret)
116 *dat = (u16) reg << card->rx_unit;
117
118 BT_DBG("Leave");
119
120 return ret;
121}
122
123static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
dcf47f3b 124 u8 mask)
789221ec
BZ		 125{
126 int ret;
127
128 BT_DBG("Enter");
129
130 sdio_writeb(card->func, mask, HOST_INT_MASK_REG, &ret);
131 if (ret) {
132 BT_ERR("Unable to enable the host interrupt!");
133 ret = -EIO;
134 }
135
136 BT_DBG("Leave");
137
138 return ret;
139}
140
141static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
dcf47f3b 142 u8 mask)
789221ec
BZ		 143{
144 int ret;
145 u8 host_int_mask;
146
147 BT_DBG("Enter");
148
149 host_int_mask = sdio_readb(card->func, HOST_INT_MASK_REG, &ret);
150 if (ret) {
151 ret = -EIO;
152 goto done;
153 }
154
155 host_int_mask &= ~mask;
156
157 sdio_writeb(card->func, host_int_mask, HOST_INT_MASK_REG, &ret);
158 if (ret < 0) {
159 BT_ERR("Unable to disable the host interrupt!");
160 ret = -EIO;
161 goto done;
162 }
163
164 ret = 0;
165
166done:
167 BT_DBG("Leave");
168
169 return ret;
170}
171
172static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
173{
174 unsigned int tries;
175 int ret;
176 u8 status;
177
178 BT_DBG("Enter");
179
180 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
181 status = sdio_readb(card->func, CARD_STATUS_REG, &ret);
182 if (ret)
183 goto failed;
184 if ((status & bits) == bits)
185 goto done;
186
187 udelay(1);
188 }
189
190 ret = -ETIMEDOUT;
191
192failed:
193 BT_ERR("FAILED! ret=%d", ret);
194
195done:
196 BT_DBG("Leave");
197
198 return ret;
199}
200
201static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
dcf47f3b 202 int pollnum)
789221ec
BZ		 203{
204 int ret = -ETIMEDOUT;
205 u16 firmwarestat;
206 unsigned int tries;
207
208 BT_DBG("Enter");
209
210 /* Wait for firmware to become ready */
211 for (tries = 0; tries < pollnum; tries++) {
212 if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
213 continue;
214
215 if (firmwarestat == FIRMWARE_READY) {
216 ret = 0;
217 break;
218 } else {
219 msleep(10);
220 }
221 }
222
223 BT_DBG("Leave");
224
225 return ret;
226}
227
228static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
229{
230 const struct firmware *fw_helper = NULL;
231 const u8 *helper = NULL;
232 int ret;
233 void *tmphlprbuf = NULL;
234 int tmphlprbufsz, hlprblknow, helperlen;
235 u8 *helperbuf;
236 u32 tx_len;
237
238 BT_DBG("Enter");
239
240 ret = request_firmware(&fw_helper, card->helper,
dcf47f3b 241 &card->func->dev);
789221ec
BZ		 242 if ((ret < 0) || !fw_helper) {
243 BT_ERR("request_firmware(helper) failed, error code = %d",
dcf47f3b 244 ret);
789221ec
BZ		 245 ret = -ENOENT;
246 goto done;
247 }
248
249 helper = fw_helper->data;
250 helperlen = fw_helper->size;
251
252 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
dcf47f3b 253 helperlen, SDIO_BLOCK_SIZE);
789221ec
BZ		 254
255 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
256
257 tmphlprbuf = kmalloc(tmphlprbufsz, GFP_KERNEL);
258 if (!tmphlprbuf) {
259 BT_ERR("Unable to allocate buffer for helper."
260 " Terminating download");
261 ret = -ENOMEM;
262 goto done;
263 }
264
265 memset(tmphlprbuf, 0, tmphlprbufsz);
266
267 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
268
269 /* Perform helper data transfer */
270 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
271 - SDIO_HEADER_LEN;
272 hlprblknow = 0;
273
274 do {
275 ret = btmrvl_sdio_poll_card_status(card,
276 CARD_IO_READY | DN_LD_CARD_RDY);
277 if (ret < 0) {
278 BT_ERR("Helper download poll status timeout @ %d",
279 hlprblknow);
280 goto done;
281 }
282
283 /* Check if there is more data? */
284 if (hlprblknow >= helperlen)
285 break;
286
287 if (helperlen - hlprblknow < tx_len)
288 tx_len = helperlen - hlprblknow;
289
290 /* Little-endian */
291 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
292 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
293 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
294 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
295
296 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
297 tx_len);
298
299 /* Now send the data */
dcf47f3b
MH		 300 ret = sdio_writesb(card->func, card->ioport, helperbuf,
301 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
789221ec
BZ		 302 if (ret < 0) {
303 BT_ERR("IO error during helper download @ %d",
304 hlprblknow);
305 goto done;
306 }
307
308 hlprblknow += tx_len;
309 } while (true);
310
311 BT_DBG("Transferring helper image EOF block");
312
313 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
314
315 ret = sdio_writesb(card->func, card->ioport, helperbuf,
dcf47f3b 316 SDIO_BLOCK_SIZE);
789221ec
BZ		 317 if (ret < 0) {
318 BT_ERR("IO error in writing helper image EOF block");
319 goto done;
320 }
321
322 ret = 0;
323
324done:
325 kfree(tmphlprbuf);
326 if (fw_helper)
327 release_firmware(fw_helper);
328
329 BT_DBG("Leave");
330
331 return ret;
332}
333
334static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
335{
336 const struct firmware *fw_firmware = NULL;
337 const u8 *firmware = NULL;
338 int firmwarelen, tmpfwbufsz, ret;
339 unsigned int tries, offset;
340 u8 base0, base1;
341 void *tmpfwbuf = NULL;
342 u8 *fwbuf;
343 u16 len;
344 int txlen = 0, tx_blocks = 0, count = 0;
345
346 BT_DBG("Enter");
347
348 ret = request_firmware(&fw_firmware, card->firmware,
dcf47f3b 349 &card->func->dev);
789221ec
BZ		 350 if ((ret < 0) || !fw_firmware) {
351 BT_ERR("request_firmware(firmware) failed, error code = %d",
dcf47f3b 352 ret);
789221ec
BZ		 353 ret = -ENOENT;
354 goto done;
355 }
356
357 firmware = fw_firmware->data;
358 firmwarelen = fw_firmware->size;
359
360 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
361
362 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
363 tmpfwbuf = kmalloc(tmpfwbufsz, GFP_KERNEL);
364 if (!tmpfwbuf) {
365 BT_ERR("Unable to allocate buffer for firmware."
366 " Terminating download");
367 ret = -ENOMEM;
368 goto done;
369 }
370
371 memset(tmpfwbuf, 0, tmpfwbufsz);
372
373 /* Ensure aligned firmware buffer */
374 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
375
376 /* Perform firmware data transfer */
377 offset = 0;
378 do {
379 ret = btmrvl_sdio_poll_card_status(card,
dcf47f3b 380 CARD_IO_READY | DN_LD_CARD_RDY);
789221ec
BZ		 381 if (ret < 0) {
382 BT_ERR("FW download with helper poll status"
dcf47f3b 383 " timeout @ %d", offset);
789221ec
BZ		 384 goto done;
385 }
386
387 /* Check if there is more data ? */
388 if (offset >= firmwarelen)
389 break;
390
391 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
392 base0 = sdio_readb(card->func,
393 SQ_READ_BASE_ADDRESS_A0_REG, &ret);
394 if (ret) {
395 BT_ERR("BASE0 register read failed:"
396 " base0 = 0x%04X(%d)."
397 " Terminating download",
398 base0, base0);
399 ret = -EIO;
400 goto done;
401 }
402 base1 = sdio_readb(card->func,
403 SQ_READ_BASE_ADDRESS_A1_REG, &ret);
404 if (ret) {
405 BT_ERR("BASE1 register read failed:"
406 " base1 = 0x%04X(%d)."
407 " Terminating download",
408 base1, base1);
409 ret = -EIO;
410 goto done;
411 }
412
413 len = (((u16) base1) << 8) | base0;
414 if (len)
415 break;
416
417 udelay(10);
418 }
419
420 if (!len)
421 break;
422 else if (len > BTM_UPLD_SIZE) {
423 BT_ERR("FW download failure @%d, invalid length %d",
dcf47f3b 424 offset, len);
789221ec
BZ		 425 ret = -EINVAL;
426 goto done;
427 }
428
429 txlen = len;
430
431 if (len & BIT(0)) {
432 count++;
433 if (count > MAX_WRITE_IOMEM_RETRY) {
434 BT_ERR("FW download failure @%d, "
435 "over max retry count", offset);
436 ret = -EIO;
437 goto done;
438 }
439 BT_ERR("FW CRC error indicated by the helper: "
440 "len = 0x%04X, txlen = %d", len, txlen);
441 len &= ~BIT(0);
442 /* Set txlen to 0 so as to resend from same offset */
443 txlen = 0;
444 } else {
445 count = 0;
446
447 /* Last block ? */
448 if (firmwarelen - offset < txlen)
449 txlen = firmwarelen - offset;
450
451 tx_blocks =
452 (txlen + SDIO_BLOCK_SIZE - 1) / SDIO_BLOCK_SIZE;
453
454 memcpy(fwbuf, &firmware[offset], txlen);
455 }
456
457 ret = sdio_writesb(card->func, card->ioport, fwbuf,
458 tx_blocks * SDIO_BLOCK_SIZE);
459
460 if (ret < 0) {
461 BT_ERR("FW download, writesb(%d) failed @%d",
dcf47f3b 462 count, offset);
789221ec 463 sdio_writeb(card->func, HOST_CMD53_FIN, CONFIG_REG,
dcf47f3b 464 &ret);
789221ec
BZ		 465 if (ret)
466 BT_ERR("writeb failed (CFG)");
467 }
468
469 offset += txlen;
470 } while (true);
471
472 BT_DBG("FW download over, size %d bytes", offset);
473
474 ret = 0;
475
476done:
477 kfree(tmpfwbuf);
478
479 if (fw_firmware)
480 release_firmware(fw_firmware);
481
482 BT_DBG("Leave");
483
484 return ret;
485}
486
487static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
488{
489 u16 buf_len = 0;
490 int ret, buf_block_len, blksz;
491 struct sk_buff *skb = NULL;
492 u32 type;
493 u8 *payload = NULL;
494 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
495 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
496
497 BT_DBG("Enter");
498
499 if (!card || !card->func) {
500 BT_ERR("card or function is NULL!");
501 ret = -EINVAL;
502 goto exit;
503 }
504
505 /* Read the length of data to be transferred */
506 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
507 if (ret < 0) {
508 BT_ERR("read rx_len failed");
509 ret = -EIO;
510 goto exit;
511 }
512
513 blksz = SDIO_BLOCK_SIZE;
514 buf_block_len = (buf_len + blksz - 1) / blksz;
515
516 if (buf_len <= SDIO_HEADER_LEN
dcf47f3b 517 || (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
789221ec
BZ		 518 BT_ERR("invalid packet length: %d", buf_len);
519 ret = -EINVAL;
520 goto exit;
521 }
522
523 /* Allocate buffer */
524 skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN,
dcf47f3b 525 GFP_ATOMIC);
789221ec
BZ		 526 if (skb == NULL) {
527 BT_ERR("No free skb");
528 goto exit;
529 }
530
531 if ((u32) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
532 skb_put(skb, (u32) skb->data & (BTSDIO_DMA_ALIGN - 1));
533 skb_pull(skb, (u32) skb->data & (BTSDIO_DMA_ALIGN - 1));
534 }
535
536 payload = skb->tail;
537
538 ret = sdio_readsb(card->func, payload, card->ioport,
539 buf_block_len * blksz);
540 if (ret < 0) {
541 BT_ERR("readsb failed: %d", ret);
542 ret = -EIO;
543 goto exit;
544 }
545
546 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
547 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
548 */
549
550 buf_len = payload[0];
551 buf_len |= (u16) payload[1] << 8;
552 type = payload[3];
553
554 switch (type) {
555 case HCI_ACLDATA_PKT:
556 case HCI_SCODATA_PKT:
557 case HCI_EVENT_PKT:
558 bt_cb(skb)->pkt_type = type;
559 skb->dev = (void *)hdev;
560 skb_put(skb, buf_len);
561 skb_pull(skb, SDIO_HEADER_LEN);
562
563 if (type == HCI_EVENT_PKT)
564 btmrvl_check_evtpkt(priv, skb);
565
566 hci_recv_frame(skb);
567 hdev->stat.byte_rx += buf_len;
568 break;
569
570 case MRVL_VENDOR_PKT:
571 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
572 skb->dev = (void *)hdev;
573 skb_put(skb, buf_len);
574 skb_pull(skb, SDIO_HEADER_LEN);
575
576 if (btmrvl_process_event(priv, skb))
577 hci_recv_frame(skb);
578
579 hdev->stat.byte_rx += buf_len;
580 break;
581
582 default:
583 BT_ERR("Unknow packet type:%d", type);
584 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
dcf47f3b 585 blksz * buf_block_len);
789221ec
BZ		 586
587 kfree_skb(skb);
588 skb = NULL;
589 break;
590 }
591
592exit:
593 if (ret) {
594 hdev->stat.err_rx++;
595 if (skb)
596 kfree_skb(skb);
597 }
598
599 BT_DBG("Leave");
600
601 return ret;
602}
603
604static int btmrvl_sdio_get_int_status(struct btmrvl_private *priv, u8 * ireg)
605{
606 int ret;
607 u8 sdio_ireg = 0;
608 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
609
610 BT_DBG("Enter");
611
612 *ireg = 0;
613
614 sdio_ireg = sdio_readb(card->func, HOST_INTSTATUS_REG, &ret);
615 if (ret) {
616 BT_ERR("sdio_readb: read int status register failed");
617 ret = -EIO;
618 goto done;
619 }
620
621 if (sdio_ireg != 0) {
622 /*
623 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
624 * Clear the interrupt status register and re-enable the
625 * interrupt.
626 */
627 BT_DBG("sdio_ireg = 0x%x", sdio_ireg);
628
629 sdio_writeb(card->func, ~(sdio_ireg) & (DN_LD_HOST_INT_STATUS |
630 UP_LD_HOST_INT_STATUS),
631 HOST_INTSTATUS_REG, &ret);
632 if (ret) {
633 BT_ERR("sdio_writeb: clear int status register "
634 "failed");
635 ret = -EIO;
636 goto done;
637 }
638 }
639
640 if (sdio_ireg & DN_LD_HOST_INT_STATUS) {
641 if (priv->btmrvl_dev.tx_dnld_rdy)
642 BT_DBG("tx_done already received: "
643 " int_status=0x%x", sdio_ireg);
644 else
645 priv->btmrvl_dev.tx_dnld_rdy = true;
646 }
647
648 if (sdio_ireg & UP_LD_HOST_INT_STATUS)
649 btmrvl_sdio_card_to_host(priv);
650
651 *ireg = sdio_ireg;
652
653 ret = 0;
654
655done:
656 BT_DBG("Leave");
657
658 return ret;
659}
660
661static void btmrvl_sdio_interrupt(struct sdio_func *func)
662{
663 struct btmrvl_private *priv;
664 struct hci_dev *hcidev;
665 struct btmrvl_sdio_card *card;
666 u8 ireg = 0;
667
668 BT_DBG("Enter");
669
670 card = sdio_get_drvdata(func);
671 if (card && card->priv) {
672 priv = card->priv;
673 hcidev = priv->btmrvl_dev.hcidev;
674
675 if (btmrvl_sdio_get_int_status(priv, &ireg))
676 BT_ERR("reading HOST_INT_STATUS_REG failed");
677 else
678 BT_DBG("HOST_INT_STATUS_REG %#x", ireg);
679
680 btmrvl_interrupt(priv);
681 }
682
683 BT_DBG("Leave");
684}
685
686static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
687{
789221ec 688 struct sdio_func *func;
dcf47f3b
MH		 689 u8 reg;
690 int ret = 0;
789221ec
BZ		 691
692 BT_DBG("Enter");
693
694 if (!card || !card->func) {
695 BT_ERR("Error: card or function is NULL!");
696 ret = -EINVAL;
697 goto failed;
698 }
699
700 func = card->func;
701
789221ec
BZ		 702 sdio_claim_host(func);
703
704 ret = sdio_enable_func(func);
705 if (ret) {
706 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
707 ret = -EIO;
708 goto release_host;
709 }
710
711 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
712 if (ret) {
713 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
714 ret = -EIO;
715 goto disable_func;
716 }
717
718 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
719 if (ret) {
720 BT_ERR("cannot set SDIO block size");
721 ret = -EIO;
722 goto release_irq;
723 }
724
725 reg = sdio_readb(func, IO_PORT_0_REG, &ret);
726 if (ret < 0) {
727 ret = -EIO;
728 goto release_irq;
729 }
730
731 card->ioport = reg;
732
733 reg = sdio_readb(func, IO_PORT_1_REG, &ret);
734 if (ret < 0) {
735 ret = -EIO;
736 goto release_irq;
737 }
738
739 card->ioport |= (reg << 8);
740
741 reg = sdio_readb(func, IO_PORT_2_REG, &ret);
742 if (ret < 0) {
743 ret = -EIO;
744 goto release_irq;
745 }
746
747 card->ioport |= (reg << 16);
748
749 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
750
751 sdio_set_drvdata(func, card);
752
753 sdio_release_host(func);
754
755 BT_DBG("Leave");
756 return 0;
757
758release_irq:
759 sdio_release_irq(func);
760
761disable_func:
762 sdio_disable_func(func);
763
764release_host:
765 sdio_release_host(func);
766
767failed:
768 BT_DBG("Leave");
769 return ret;
770}
771
772static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
773{
774 BT_DBG("Enter");
775
776 if (card && card->func) {
777 sdio_claim_host(card->func);
778 sdio_release_irq(card->func);
779 sdio_disable_func(card->func);
780 sdio_release_host(card->func);
781 sdio_set_drvdata(card->func, NULL);
782 }
783
784 BT_DBG("Leave");
785
786 return 0;
787}
788
789static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
790{
791 int ret;
792
793 BT_DBG("Enter");
794
795 if (!card || !card->func) {
796 BT_DBG("Leave");
797 return -EINVAL;
798 }
799
800 sdio_claim_host(card->func);
801
802 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
803
804 btmrvl_sdio_get_rx_unit(card);
805
806 sdio_release_host(card->func);
807
808 BT_DBG("Leave");
809
810 return ret;
811}
812
813static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
814{
815 int ret;
816
817 BT_DBG("Enter");
818
819 if (!card || !card->func) {
820 BT_DBG("Leave");
821 return -EINVAL;
822 }
823
824 sdio_claim_host(card->func);
825
826 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
827
828 sdio_release_host(card->func);
829
830 BT_DBG("Leave");
831
832 return ret;
833}
834
835static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
836 u8 *payload, u16 nb)
837{
838 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
839 int ret = 0;
840 int buf_block_len;
841 int blksz;
842 int i = 0;
843 u8 *buf = NULL;
844 void *tmpbuf = NULL;
845 int tmpbufsz;
846
847 BT_DBG("Enter");
848
849 if (!card || !card->func) {
850 BT_ERR("card or function is NULL!");
851 BT_DBG("Leave");
852 return -EINVAL;
853 }
854
855 buf = payload;
856 if ((u32) payload & (BTSDIO_DMA_ALIGN - 1)) {
857 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
858 tmpbuf = kmalloc(tmpbufsz, GFP_KERNEL);
859 memset(tmpbuf, 0, tmpbufsz);
860 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
861 memcpy(buf, payload, nb);
862 }
863
864 blksz = SDIO_BLOCK_SIZE;
865 buf_block_len = (nb + blksz - 1) / blksz;
866
867 sdio_claim_host(card->func);
868
869 do {
870 /* Transfer data to card */
871 ret = sdio_writesb(card->func, card->ioport, buf,
872 buf_block_len * blksz);
873 if (ret < 0) {
874 i++;
875 BT_ERR("i=%d writesb failed: %d", i, ret);
876 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
877 payload, nb);
878 ret = -EIO;
879 if (i > MAX_WRITE_IOMEM_RETRY)
880 goto exit;
881 }
882 } while (ret);
883
884 priv->btmrvl_dev.tx_dnld_rdy = false;
885
886exit:
887 sdio_release_host(card->func);
888
889 BT_DBG("Leave");
890
891 return ret;
892}
893
894static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
895{
896 int ret = 0;
897
898 BT_DBG("Enter");
899
900 if (!card || !card->func) {
901 BT_ERR("card or function is NULL!");
902 BT_DBG("Leave");
903 return -EINVAL;
904 }
905 sdio_claim_host(card->func);
906
907 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
908 BT_DBG("Firmware already downloaded!");
909 goto done;
910 }
911
912 ret = btmrvl_sdio_download_helper(card);
913 if (ret) {
914 BT_ERR("Failed to download helper!");
915 ret = -EIO;
916 goto done;
917 }
918
919 if (btmrvl_sdio_download_fw_w_helper(card)) {
920 BT_ERR("Failed to download firmware!");
921 ret = -EIO;
922 goto done;
923 }
924
925 if (btmrvl_sdio_verify_fw_download(card, MAX_POLL_TRIES)) {
926 BT_ERR("FW failed to be active in time!");
927 ret = -ETIMEDOUT;
928 goto done;
929 }
930
931done:
932 sdio_release_host(card->func);
933
934 BT_DBG("Leave");
935
936 return ret;
937}
938
939static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
940{
941 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
942 int ret = 0;
943
944 BT_DBG("Enter");
945
946 if (!card || !card->func) {
947 BT_ERR("card or function is NULL!");
948 BT_DBG("Leave");
949 return -EINVAL;
950 }
951
952 sdio_claim_host(card->func);
953
954 sdio_writeb(card->func, HOST_POWER_UP, CONFIG_REG, &ret);
955
956 sdio_release_host(card->func);
957
958 BT_DBG("wake up firmware");
959
960 BT_DBG("Leave");
961
962 return ret;
963}
964
965static int btmrvl_sdio_probe(struct sdio_func *func,
dcf47f3b 966 const struct sdio_device_id *id)
789221ec
BZ		 967{
968 int ret = 0;
969 struct btmrvl_private *priv = NULL;
970 struct btmrvl_sdio_card *card = NULL;
971
972 BT_DBG("Enter");
973
974 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
975 id->vendor, id->device, id->class, func->num);
976
977 card = kzalloc(sizeof(*card), GFP_KERNEL);
978 if (!card) {
979 ret = -ENOMEM;
980 goto done;
981 }
982
983 card->func = func;
984
dcf47f3b
MH		 985 if (id->driver_data) {
986 struct btmrvl_sdio_device *data = (void *) id->driver_data;
987 card->helper = data->helper;
988 card->firmware = data->firmware;
989 }
990
789221ec
BZ		 991 if (btmrvl_sdio_register_dev(card) < 0) {
992 BT_ERR("Failed to register BT device!");
993 ret = -ENODEV;
994 goto free_card;
995 }
996
997 /* Disable the interrupts on the card */
998 btmrvl_sdio_disable_host_int(card);
999
1000 if (btmrvl_sdio_download_fw(card)) {
1001 BT_ERR("Downloading firmware failed!");
1002 ret = -ENODEV;
1003 goto unreg_dev;
1004 }
1005
1006 msleep(100);
1007
1008 btmrvl_sdio_enable_host_int(card);
1009
1010 priv = btmrvl_add_card(card);
1011 if (!priv) {
1012 BT_ERR("Initializing card failed!");
1013 ret = -ENODEV;
1014 goto disable_host_int;
1015 }
1016
1017 card->priv = priv;
1018
1019 /* Initialize the interface specific function pointers */
1020 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1021 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1022
789221ec
BZ		 1023 btmrvl_send_module_cfg_cmd(priv, MODULE_BRINGUP_REQ);
1024
1025 BT_DBG("Leave");
1026
1027 return 0;
1028
1029disable_host_int:
1030 btmrvl_sdio_disable_host_int(card);
1031unreg_dev:
1032 btmrvl_sdio_unregister_dev(card);
1033free_card:
1034 kfree(card);
1035done:
1036 BT_DBG("Leave");
1037
1038 return ret;
1039}
1040
1041static void btmrvl_sdio_remove(struct sdio_func *func)
1042{
1043 struct btmrvl_sdio_card *card;
1044
1045 BT_DBG("Enter");
1046
1047 if (func) {
1048 card = sdio_get_drvdata(func);
1049 if (card) {
1050 /* Send SHUTDOWN command & disable interrupt
1051 * if user removes the module.
1052 */
1053 if (user_rmmod) {
1054 btmrvl_send_module_cfg_cmd(card->priv,
1055 MODULE_SHUTDOWN_REQ);
1056 btmrvl_sdio_disable_host_int(card);
1057 }
1058 BT_DBG("unregester dev");
1059 btmrvl_sdio_unregister_dev(card);
1060 btmrvl_remove_card(card->priv);
1061 kfree(card);
1062 }
1063 }
1064
1065 BT_DBG("Leave");
1066}
1067
1068static struct sdio_driver bt_mrvl_sdio = {
1069 .name = "btmrvl_sdio",
1070 .id_table = btmrvl_sdio_ids,
1071 .probe = btmrvl_sdio_probe,
1072 .remove = btmrvl_sdio_remove,
1073};
1074
1075static int btmrvl_sdio_init_module(void)
1076{
1077 BT_DBG("Enter");
1078
1079 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1080 BT_ERR("SDIO Driver Registration Failed");
1081 BT_DBG("Leave");
1082 return -ENODEV;
1083 }
1084
1085 /* Clear the flag in case user removes the card. */
1086 user_rmmod = 0;
1087
1088 BT_DBG("Leave");
1089
1090 return 0;
1091}
1092
1093static void btmrvl_sdio_exit_module(void)
1094{
1095 BT_DBG("Enter");
1096
1097 /* Set the flag as user is removing this module. */
1098 user_rmmod = 1;
1099
1100 sdio_unregister_driver(&bt_mrvl_sdio);
1101
1102 BT_DBG("Leave");
1103}
1104
1105module_init(btmrvl_sdio_init_module);
1106module_exit(btmrvl_sdio_exit_module);
1107
1108MODULE_AUTHOR("Marvell International Ltd.");
9666fb35 1109MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
789221ec
BZ		 1110MODULE_VERSION(VERSION);
1111MODULE_LICENSE("GPL v2");
kernel source for telekom puls (alcatel/mediatek)