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tcp: fix tcp_trim_head() to adjust segment count with skb MSS
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / bluetooth / btmrvl_sdio.c
blob27b74b0d547b540043fd318917e2cb5d6ebe0591
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 SD8797 Bluetooth device */
114 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
115 .driver_data = (unsigned long) &btmrvl_sdio_sd8797 },
116
117 { } /* Terminating entry */
118 };
119
120 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
121
122 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
123 {
124 u8 reg;
125 int ret;
126
127 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
128 if (!ret)
129 card->rx_unit = reg;
130
131 return ret;
132 }
133
134 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
135 {
136 u8 fws0, fws1;
137 int ret;
138
139 *dat = 0;
140
141 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
142 if (ret)
143 return -EIO;
144
145 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
146 if (ret)
147 return -EIO;
148
149 *dat = (((u16) fws1) << 8) | fws0;
150
151 return 0;
152 }
153
154 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
155 {
156 u8 reg;
157 int ret;
158
159 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
160 if (!ret)
161 *dat = (u16) reg << card->rx_unit;
162
163 return ret;
164 }
165
166 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
167 u8 mask)
168 {
169 int ret;
170
171 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
172 if (ret) {
173 BT_ERR("Unable to enable the host interrupt!");
174 ret = -EIO;
175 }
176
177 return ret;
178 }
179
180 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
181 u8 mask)
182 {
183 u8 host_int_mask;
184 int ret;
185
186 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
187 if (ret)
188 return -EIO;
189
190 host_int_mask &= ~mask;
191
192 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
193 if (ret < 0) {
194 BT_ERR("Unable to disable the host interrupt!");
195 return -EIO;
196 }
197
198 return 0;
199 }
200
201 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
202 {
203 unsigned int tries;
204 u8 status;
205 int ret;
206
207 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
208 status = sdio_readb(card->func, card->reg->card_status, &ret);
209 if (ret)
210 goto failed;
211 if ((status & bits) == bits)
212 return ret;
213
214 udelay(1);
215 }
216
217 ret = -ETIMEDOUT;
218
219 failed:
220 BT_ERR("FAILED! ret=%d", ret);
221
222 return ret;
223 }
224
225 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
226 int pollnum)
227 {
228 int ret = -ETIMEDOUT;
229 u16 firmwarestat;
230 unsigned int tries;
231
232 /* Wait for firmware to become ready */
233 for (tries = 0; tries < pollnum; tries++) {
234 if (btmrvl_sdio_read_fw_status(card, &firmwarestat) < 0)
235 continue;
236
237 if (firmwarestat == FIRMWARE_READY) {
238 ret = 0;
239 break;
240 } else {
241 msleep(10);
242 }
243 }
244
245 return ret;
246 }
247
248 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
249 {
250 const struct firmware *fw_helper = NULL;
251 const u8 *helper = NULL;
252 int ret;
253 void *tmphlprbuf = NULL;
254 int tmphlprbufsz, hlprblknow, helperlen;
255 u8 *helperbuf;
256 u32 tx_len;
257
258 ret = request_firmware(&fw_helper, card->helper,
259 &card->func->dev);
260 if ((ret < 0) || !fw_helper) {
261 BT_ERR("request_firmware(helper) failed, error code = %d",
262 ret);
263 ret = -ENOENT;
264 goto done;
265 }
266
267 helper = fw_helper->data;
268 helperlen = fw_helper->size;
269
270 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
271 helperlen, SDIO_BLOCK_SIZE);
272
273 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
274
275 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
276 if (!tmphlprbuf) {
277 BT_ERR("Unable to allocate buffer for helper."
278 " Terminating download");
279 ret = -ENOMEM;
280 goto done;
281 }
282
283 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
284
285 /* Perform helper data transfer */
286 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
287 - SDIO_HEADER_LEN;
288 hlprblknow = 0;
289
290 do {
291 ret = btmrvl_sdio_poll_card_status(card,
292 CARD_IO_READY | DN_LD_CARD_RDY);
293 if (ret < 0) {
294 BT_ERR("Helper download poll status timeout @ %d",
295 hlprblknow);
296 goto done;
297 }
298
299 /* Check if there is more data? */
300 if (hlprblknow >= helperlen)
301 break;
302
303 if (helperlen - hlprblknow < tx_len)
304 tx_len = helperlen - hlprblknow;
305
306 /* Little-endian */
307 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
308 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
309 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
310 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
311
312 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
313 tx_len);
314
315 /* Now send the data */
316 ret = sdio_writesb(card->func, card->ioport, helperbuf,
317 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
318 if (ret < 0) {
319 BT_ERR("IO error during helper download @ %d",
320 hlprblknow);
321 goto done;
322 }
323
324 hlprblknow += tx_len;
325 } while (true);
326
327 BT_DBG("Transferring helper image EOF block");
328
329 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
330
331 ret = sdio_writesb(card->func, card->ioport, helperbuf,
332 SDIO_BLOCK_SIZE);
333 if (ret < 0) {
334 BT_ERR("IO error in writing helper image EOF block");
335 goto done;
336 }
337
338 ret = 0;
339
340 done:
341 kfree(tmphlprbuf);
342 if (fw_helper)
343 release_firmware(fw_helper);
344
345 return ret;
346 }
347
348 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
349 {
350 const struct firmware *fw_firmware = NULL;
351 const u8 *firmware = NULL;
352 int firmwarelen, tmpfwbufsz, ret;
353 unsigned int tries, offset;
354 u8 base0, base1;
355 void *tmpfwbuf = NULL;
356 u8 *fwbuf;
357 u16 len, blksz_dl = card->sd_blksz_fw_dl;
358 int txlen = 0, tx_blocks = 0, count = 0;
359
360 ret = request_firmware(&fw_firmware, card->firmware,
361 &card->func->dev);
362 if ((ret < 0) || !fw_firmware) {
363 BT_ERR("request_firmware(firmware) failed, error code = %d",
364 ret);
365 ret = -ENOENT;
366 goto done;
367 }
368
369 firmware = fw_firmware->data;
370 firmwarelen = fw_firmware->size;
371
372 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
373
374 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
375 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
376 if (!tmpfwbuf) {
377 BT_ERR("Unable to allocate buffer for firmware."
378 " Terminating download");
379 ret = -ENOMEM;
380 goto done;
381 }
382
383 /* Ensure aligned firmware buffer */
384 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
385
386 /* Perform firmware data transfer */
387 offset = 0;
388 do {
389 ret = btmrvl_sdio_poll_card_status(card,
390 CARD_IO_READY | DN_LD_CARD_RDY);
391 if (ret < 0) {
392 BT_ERR("FW download with helper poll status"
393 " timeout @ %d", offset);
394 goto done;
395 }
396
397 /* Check if there is more data ? */
398 if (offset >= firmwarelen)
399 break;
400
401 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
402 base0 = sdio_readb(card->func,
403 card->reg->sq_read_base_addr_a0, &ret);
404 if (ret) {
405 BT_ERR("BASE0 register read failed:"
406 " base0 = 0x%04X(%d)."
407 " Terminating download",
408 base0, base0);
409 ret = -EIO;
410 goto done;
411 }
412 base1 = sdio_readb(card->func,
413 card->reg->sq_read_base_addr_a1, &ret);
414 if (ret) {
415 BT_ERR("BASE1 register read failed:"
416 " base1 = 0x%04X(%d)."
417 " Terminating download",
418 base1, base1);
419 ret = -EIO;
420 goto done;
421 }
422
423 len = (((u16) base1) << 8) | base0;
424 if (len)
425 break;
426
427 udelay(10);
428 }
429
430 if (!len)
431 break;
432 else if (len > BTM_UPLD_SIZE) {
433 BT_ERR("FW download failure @%d, invalid length %d",
434 offset, len);
435 ret = -EINVAL;
436 goto done;
437 }
438
439 txlen = len;
440
441 if (len & BIT(0)) {
442 count++;
443 if (count > MAX_WRITE_IOMEM_RETRY) {
444 BT_ERR("FW download failure @%d, "
445 "over max retry count", offset);
446 ret = -EIO;
447 goto done;
448 }
449 BT_ERR("FW CRC error indicated by the helper: "
450 "len = 0x%04X, txlen = %d", len, txlen);
451 len &= ~BIT(0);
452 /* Set txlen to 0 so as to resend from same offset */
453 txlen = 0;
454 } else {
455 count = 0;
456
457 /* Last block ? */
458 if (firmwarelen - offset < txlen)
459 txlen = firmwarelen - offset;
460
461 tx_blocks = (txlen + blksz_dl - 1) / blksz_dl;
462
463 memcpy(fwbuf, &firmware[offset], txlen);
464 }
465
466 ret = sdio_writesb(card->func, card->ioport, fwbuf,
467 tx_blocks * blksz_dl);
468
469 if (ret < 0) {
470 BT_ERR("FW download, writesb(%d) failed @%d",
471 count, offset);
472 sdio_writeb(card->func, HOST_CMD53_FIN,
473 card->reg->cfg, &ret);
474 if (ret)
475 BT_ERR("writeb failed (CFG)");
476 }
477
478 offset += txlen;
479 } while (true);
480
481 BT_DBG("FW download over, size %d bytes", offset);
482
483 ret = 0;
484
485 done:
486 kfree(tmpfwbuf);
487
488 if (fw_firmware)
489 release_firmware(fw_firmware);
490
491 return ret;
492 }
493
494 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
495 {
496 u16 buf_len = 0;
497 int ret, buf_block_len, blksz;
498 struct sk_buff *skb = NULL;
499 u32 type;
500 u8 *payload = NULL;
501 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
502 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
503
504 if (!card || !card->func) {
505 BT_ERR("card or function is NULL!");
506 ret = -EINVAL;
507 goto exit;
508 }
509
510 /* Read the length of data to be transferred */
511 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
512 if (ret < 0) {
513 BT_ERR("read rx_len failed");
514 ret = -EIO;
515 goto exit;
516 }
517
518 blksz = SDIO_BLOCK_SIZE;
519 buf_block_len = (buf_len + blksz - 1) / blksz;
520
521 if (buf_len <= SDIO_HEADER_LEN
522 || (buf_block_len * blksz) > ALLOC_BUF_SIZE) {
523 BT_ERR("invalid packet length: %d", buf_len);
524 ret = -EINVAL;
525 goto exit;
526 }
527
528 /* Allocate buffer */
529 skb = bt_skb_alloc(buf_block_len * blksz + BTSDIO_DMA_ALIGN,
530 GFP_ATOMIC);
531 if (skb == NULL) {
532 BT_ERR("No free skb");
533 goto exit;
534 }
535
536 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
537 skb_put(skb, (unsigned long) skb->data &
538 (BTSDIO_DMA_ALIGN - 1));
539 skb_pull(skb, (unsigned long) skb->data &
540 (BTSDIO_DMA_ALIGN - 1));
541 }
542
543 payload = skb->data;
544
545 ret = sdio_readsb(card->func, payload, card->ioport,
546 buf_block_len * blksz);
547 if (ret < 0) {
548 BT_ERR("readsb failed: %d", ret);
549 ret = -EIO;
550 goto exit;
551 }
552
553 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
554 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
555 */
556
557 buf_len = payload[0];
558 buf_len |= (u16) payload[1] << 8;
559 type = payload[3];
560
561 switch (type) {
562 case HCI_ACLDATA_PKT:
563 case HCI_SCODATA_PKT:
564 case HCI_EVENT_PKT:
565 bt_cb(skb)->pkt_type = type;
566 skb->dev = (void *)hdev;
567 skb_put(skb, buf_len);
568 skb_pull(skb, SDIO_HEADER_LEN);
569
570 if (type == HCI_EVENT_PKT)
571 btmrvl_check_evtpkt(priv, skb);
572
573 hci_recv_frame(skb);
574 hdev->stat.byte_rx += buf_len;
575 break;
576
577 case MRVL_VENDOR_PKT:
578 bt_cb(skb)->pkt_type = HCI_VENDOR_PKT;
579 skb->dev = (void *)hdev;
580 skb_put(skb, buf_len);
581 skb_pull(skb, SDIO_HEADER_LEN);
582
583 if (btmrvl_process_event(priv, skb))
584 hci_recv_frame(skb);
585
586 hdev->stat.byte_rx += buf_len;
587 break;
588
589 default:
590 BT_ERR("Unknown packet type:%d", type);
591 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET, payload,
592 blksz * buf_block_len);
593
594 kfree_skb(skb);
595 skb = NULL;
596 break;
597 }
598
599 exit:
600 if (ret) {
601 hdev->stat.err_rx++;
602 if (skb)
603 kfree_skb(skb);
604 }
605
606 return ret;
607 }
608
609 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
610 {
611 ulong flags;
612 u8 ireg;
613 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
614
615 spin_lock_irqsave(&priv->driver_lock, flags);
616 ireg = sdio_ireg;
617 sdio_ireg = 0;
618 spin_unlock_irqrestore(&priv->driver_lock, flags);
619
620 sdio_claim_host(card->func);
621 if (ireg & DN_LD_HOST_INT_STATUS) {
622 if (priv->btmrvl_dev.tx_dnld_rdy)
623 BT_DBG("tx_done already received: "
624 " int_status=0x%x", ireg);
625 else
626 priv->btmrvl_dev.tx_dnld_rdy = true;
627 }
628
629 if (ireg & UP_LD_HOST_INT_STATUS)
630 btmrvl_sdio_card_to_host(priv);
631
632 sdio_release_host(card->func);
633
634 return 0;
635 }
636
637 static void btmrvl_sdio_interrupt(struct sdio_func *func)
638 {
639 struct btmrvl_private *priv;
640 struct btmrvl_sdio_card *card;
641 ulong flags;
642 u8 ireg = 0;
643 int ret;
644
645 card = sdio_get_drvdata(func);
646 if (!card || !card->priv) {
647 BT_ERR("sbi_interrupt(%p) card or priv is "
648 "NULL, card=%p\n", func, card);
649 return;
650 }
651
652 priv = card->priv;
653
654 ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
655 if (ret) {
656 BT_ERR("sdio_readb: read int status register failed");
657 return;
658 }
659
660 if (ireg != 0) {
661 /*
662 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
663 * Clear the interrupt status register and re-enable the
664 * interrupt.
665 */
666 BT_DBG("ireg = 0x%x", ireg);
667
668 sdio_writeb(card->func, ~(ireg) & (DN_LD_HOST_INT_STATUS |
669 UP_LD_HOST_INT_STATUS),
670 card->reg->host_intstatus, &ret);
671 if (ret) {
672 BT_ERR("sdio_writeb: clear int status register failed");
673 return;
674 }
675 }
676
677 spin_lock_irqsave(&priv->driver_lock, flags);
678 sdio_ireg |= ireg;
679 spin_unlock_irqrestore(&priv->driver_lock, flags);
680
681 btmrvl_interrupt(priv);
682 }
683
684 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
685 {
686 struct sdio_func *func;
687 u8 reg;
688 int ret = 0;
689
690 if (!card || !card->func) {
691 BT_ERR("Error: card or function is NULL!");
692 ret = -EINVAL;
693 goto failed;
694 }
695
696 func = card->func;
697
698 sdio_claim_host(func);
699
700 ret = sdio_enable_func(func);
701 if (ret) {
702 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
703 ret = -EIO;
704 goto release_host;
705 }
706
707 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
708 if (ret) {
709 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
710 ret = -EIO;
711 goto disable_func;
712 }
713
714 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
715 if (ret) {
716 BT_ERR("cannot set SDIO block size");
717 ret = -EIO;
718 goto release_irq;
719 }
720
721 reg = sdio_readb(func, card->reg->io_port_0, &ret);
722 if (ret < 0) {
723 ret = -EIO;
724 goto release_irq;
725 }
726
727 card->ioport = reg;
728
729 reg = sdio_readb(func, card->reg->io_port_1, &ret);
730 if (ret < 0) {
731 ret = -EIO;
732 goto release_irq;
733 }
734
735 card->ioport |= (reg << 8);
736
737 reg = sdio_readb(func, card->reg->io_port_2, &ret);
738 if (ret < 0) {
739 ret = -EIO;
740 goto release_irq;
741 }
742
743 card->ioport |= (reg << 16);
744
745 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
746
747 sdio_set_drvdata(func, card);
748
749 sdio_release_host(func);
750
751 return 0;
752
753 release_irq:
754 sdio_release_irq(func);
755
756 disable_func:
757 sdio_disable_func(func);
758
759 release_host:
760 sdio_release_host(func);
761
762 failed:
763 return ret;
764 }
765
766 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
767 {
768 if (card && card->func) {
769 sdio_claim_host(card->func);
770 sdio_release_irq(card->func);
771 sdio_disable_func(card->func);
772 sdio_release_host(card->func);
773 sdio_set_drvdata(card->func, NULL);
774 }
775
776 return 0;
777 }
778
779 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
780 {
781 int ret;
782
783 if (!card || !card->func)
784 return -EINVAL;
785
786 sdio_claim_host(card->func);
787
788 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
789
790 btmrvl_sdio_get_rx_unit(card);
791
792 sdio_release_host(card->func);
793
794 return ret;
795 }
796
797 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
798 {
799 int ret;
800
801 if (!card || !card->func)
802 return -EINVAL;
803
804 sdio_claim_host(card->func);
805
806 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
807
808 sdio_release_host(card->func);
809
810 return ret;
811 }
812
813 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
814 u8 *payload, u16 nb)
815 {
816 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
817 int ret = 0;
818 int buf_block_len;
819 int blksz;
820 int i = 0;
821 u8 *buf = NULL;
822 void *tmpbuf = NULL;
823 int tmpbufsz;
824
825 if (!card || !card->func) {
826 BT_ERR("card or function is NULL!");
827 return -EINVAL;
828 }
829
830 buf = payload;
831 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1)) {
832 tmpbufsz = ALIGN_SZ(nb, BTSDIO_DMA_ALIGN);
833 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
834 if (!tmpbuf)
835 return -ENOMEM;
836 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
837 memcpy(buf, payload, nb);
838 }
839
840 blksz = SDIO_BLOCK_SIZE;
841 buf_block_len = (nb + blksz - 1) / blksz;
842
843 sdio_claim_host(card->func);
844
845 do {
846 /* Transfer data to card */
847 ret = sdio_writesb(card->func, card->ioport, buf,
848 buf_block_len * blksz);
849 if (ret < 0) {
850 i++;
851 BT_ERR("i=%d writesb failed: %d", i, ret);
852 print_hex_dump_bytes("", DUMP_PREFIX_OFFSET,
853 payload, nb);
854 ret = -EIO;
855 if (i > MAX_WRITE_IOMEM_RETRY)
856 goto exit;
857 }
858 } while (ret);
859
860 priv->btmrvl_dev.tx_dnld_rdy = false;
861
862 exit:
863 sdio_release_host(card->func);
864 kfree(tmpbuf);
865
866 return ret;
867 }
868
869 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
870 {
871 int ret = 0;
872 u8 fws0;
873 int pollnum = MAX_POLL_TRIES;
874
875 if (!card || !card->func) {
876 BT_ERR("card or function is NULL!");
877 return -EINVAL;
878 }
879 sdio_claim_host(card->func);
880
881 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
882 BT_DBG("Firmware already downloaded!");
883 goto done;
884 }
885
886 /* Check if other function driver is downloading the firmware */
887 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
888 if (ret) {
889 BT_ERR("Failed to read FW downloading status!");
890 ret = -EIO;
891 goto done;
892 }
893 if (fws0) {
894 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
895
896 /* Give other function more time to download the firmware */
897 pollnum *= 10;
898 } else {
899 if (card->helper) {
900 ret = btmrvl_sdio_download_helper(card);
901 if (ret) {
902 BT_ERR("Failed to download helper!");
903 ret = -EIO;
904 goto done;
905 }
906 }
907
908 if (btmrvl_sdio_download_fw_w_helper(card)) {
909 BT_ERR("Failed to download firmware!");
910 ret = -EIO;
911 goto done;
912 }
913 }
914
915 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
916 BT_ERR("FW failed to be active in time!");
917 ret = -ETIMEDOUT;
918 goto done;
919 }
920
921 done:
922 sdio_release_host(card->func);
923
924 return ret;
925 }
926
927 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
928 {
929 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
930 int ret = 0;
931
932 if (!card || !card->func) {
933 BT_ERR("card or function is NULL!");
934 return -EINVAL;
935 }
936
937 sdio_claim_host(card->func);
938
939 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
940
941 sdio_release_host(card->func);
942
943 BT_DBG("wake up firmware");
944
945 return ret;
946 }
947
948 static int btmrvl_sdio_probe(struct sdio_func *func,
949 const struct sdio_device_id *id)
950 {
951 int ret = 0;
952 struct btmrvl_private *priv = NULL;
953 struct btmrvl_sdio_card *card = NULL;
954
955 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
956 id->vendor, id->device, id->class, func->num);
957
958 card = kzalloc(sizeof(*card), GFP_KERNEL);
959 if (!card) {
960 ret = -ENOMEM;
961 goto done;
962 }
963
964 card->func = func;
965
966 if (id->driver_data) {
967 struct btmrvl_sdio_device *data = (void *) id->driver_data;
968 card->helper = data->helper;
969 card->firmware = data->firmware;
970 card->reg = data->reg;
971 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
972 }
973
974 if (btmrvl_sdio_register_dev(card) < 0) {
975 BT_ERR("Failed to register BT device!");
976 ret = -ENODEV;
977 goto free_card;
978 }
979
980 /* Disable the interrupts on the card */
981 btmrvl_sdio_disable_host_int(card);
982
983 if (btmrvl_sdio_download_fw(card)) {
984 BT_ERR("Downloading firmware failed!");
985 ret = -ENODEV;
986 goto unreg_dev;
987 }
988
989 msleep(100);
990
991 btmrvl_sdio_enable_host_int(card);
992
993 priv = btmrvl_add_card(card);
994 if (!priv) {
995 BT_ERR("Initializing card failed!");
996 ret = -ENODEV;
997 goto disable_host_int;
998 }
999
1000 card->priv = priv;
1001
1002 /* Initialize the interface specific function pointers */
1003 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1004 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1005 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1006
1007 if (btmrvl_register_hdev(priv)) {
1008 BT_ERR("Register hdev failed!");
1009 ret = -ENODEV;
1010 goto disable_host_int;
1011 }
1012
1013 priv->btmrvl_dev.psmode = 1;
1014 btmrvl_enable_ps(priv);
1015
1016 return 0;
1017
1018 disable_host_int:
1019 btmrvl_sdio_disable_host_int(card);
1020 unreg_dev:
1021 btmrvl_sdio_unregister_dev(card);
1022 free_card:
1023 kfree(card);
1024 done:
1025 return ret;
1026 }
1027
1028 static void btmrvl_sdio_remove(struct sdio_func *func)
1029 {
1030 struct btmrvl_sdio_card *card;
1031
1032 if (func) {
1033 card = sdio_get_drvdata(func);
1034 if (card) {
1035 /* Send SHUTDOWN command & disable interrupt
1036 * if user removes the module.
1037 */
1038 if (user_rmmod) {
1039 btmrvl_send_module_cfg_cmd(card->priv,
1040 MODULE_SHUTDOWN_REQ);
1041 btmrvl_sdio_disable_host_int(card);
1042 }
1043 BT_DBG("unregester dev");
1044 btmrvl_sdio_unregister_dev(card);
1045 btmrvl_remove_card(card->priv);
1046 kfree(card);
1047 }
1048 }
1049 }
1050
1051 static struct sdio_driver bt_mrvl_sdio = {
1052 .name = "btmrvl_sdio",
1053 .id_table = btmrvl_sdio_ids,
1054 .probe = btmrvl_sdio_probe,
1055 .remove = btmrvl_sdio_remove,
1056 };
1057
1058 static int __init btmrvl_sdio_init_module(void)
1059 {
1060 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1061 BT_ERR("SDIO Driver Registration Failed");
1062 return -ENODEV;
1063 }
1064
1065 /* Clear the flag in case user removes the card. */
1066 user_rmmod = 0;
1067
1068 return 0;
1069 }
1070
1071 static void __exit btmrvl_sdio_exit_module(void)
1072 {
1073 /* Set the flag as user is removing this module. */
1074 user_rmmod = 1;
1075
1076 sdio_unregister_driver(&bt_mrvl_sdio);
1077 }
1078
1079 module_init(btmrvl_sdio_init_module);
1080 module_exit(btmrvl_sdio_exit_module);
1081
1082 MODULE_AUTHOR("Marvell International Ltd.");
1083 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1084 MODULE_VERSION(VERSION);
1085 MODULE_LICENSE("GPL v2");
1086 MODULE_FIRMWARE("sd8688_helper.bin");
1087 MODULE_FIRMWARE("sd8688.bin");
1088 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1089 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree