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#include <linux/suspend.h>
24
25#include <linux/mmc/sdio_ids.h>
26#include <linux/mmc/sdio_func.h>
27#include <linux/module.h>
28#include <linux/devcoredump.h>
29
30#include <net/bluetooth/bluetooth.h>
31#include <net/bluetooth/hci_core.h>
32
33#include "btmrvl_drv.h"
34#include "btmrvl_sdio.h"
35
36#define VERSION "1.0"
37
38static struct memory_type_mapping mem_type_mapping_tbl[] = {
39 {"ITCM", NULL, 0, 0xF0},
40 {"DTCM", NULL, 0, 0xF1},
41 {"SQRAM", NULL, 0, 0xF2},
42 {"APU", NULL, 0, 0xF3},
43 {"CIU", NULL, 0, 0xF4},
44 {"ICU", NULL, 0, 0xF5},
45 {"MAC", NULL, 0, 0xF6},
46 {"EXT7", NULL, 0, 0xF7},
47 {"EXT8", NULL, 0, 0xF8},
48 {"EXT9", NULL, 0, 0xF9},
49 {"EXT10", NULL, 0, 0xFA},
50 {"EXT11", NULL, 0, 0xFB},
51 {"EXT12", NULL, 0, 0xFC},
52 {"EXT13", NULL, 0, 0xFD},
53 {"EXTLAST", NULL, 0, 0xFE},
54};
55
56static const struct of_device_id btmrvl_sdio_of_match_table[] = {
57 { .compatible = "marvell,sd8897-bt" },
58 { .compatible = "marvell,sd8997-bt" },
59 { }
60};
61
62static irqreturn_t btmrvl_wake_irq_bt(int irq, void *priv)
63{
64 struct btmrvl_sdio_card *card = priv;
65 struct device *dev = &card->func->dev;
66 struct btmrvl_plt_wake_cfg *cfg = card->plt_wake_cfg;
67
68 dev_info(dev, "wake by bt\n");
69 cfg->wake_by_bt = true;
70 disable_irq_nosync(irq);
71
72 pm_wakeup_event(dev, 0);
73 pm_system_wakeup();
74
75 return IRQ_HANDLED;
76}
77
78/* This function parses device tree node using mmc subnode devicetree API.
79 * The device node is saved in card->plt_of_node.
80 * If the device tree node exists and includes interrupts attributes, this
81 * function will request platform specific wakeup interrupt.
82 */
83static int btmrvl_sdio_probe_of(struct device *dev,
84 struct btmrvl_sdio_card *card)
85{
86 struct btmrvl_plt_wake_cfg *cfg;
87 int ret;
88
89 if (!dev->of_node ||
90 !of_match_node(btmrvl_sdio_of_match_table, dev->of_node)) {
91 dev_info(dev, "sdio device tree data not available\n");
92 return -1;
93 }
94
95 card->plt_of_node = dev->of_node;
96
97 card->plt_wake_cfg = devm_kzalloc(dev, sizeof(*card->plt_wake_cfg),
98 GFP_KERNEL);
99 cfg = card->plt_wake_cfg;
100 if (cfg && card->plt_of_node) {
101 cfg->irq_bt = irq_of_parse_and_map(card->plt_of_node, 0);
102 if (!cfg->irq_bt) {
103 dev_err(dev, "fail to parse irq_bt from device tree\n");
104 cfg->irq_bt = -1;
105 } else {
106 ret = devm_request_irq(dev, cfg->irq_bt,
107 btmrvl_wake_irq_bt,
108 0, "bt_wake", card);
109 if (ret) {
110 dev_err(dev,
111 "Failed to request irq_bt %d (%d)\n",
112 cfg->irq_bt, ret);
113 }
114 disable_irq(cfg->irq_bt);
115 }
116 }
117
118 return 0;
119}
120
121/* The btmrvl_sdio_remove() callback function is called
122 * when user removes this module from kernel space or ejects
123 * the card from the slot. The driver handles these 2 cases
124 * differently.
125 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
126 * command is sent to firmware and interrupt will be disabled.
127 * If the card is removed, there is no need to send command
128 * or disable interrupt.
129 *
130 * The variable 'user_rmmod' is used to distinguish these two
131 * scenarios. This flag is initialized as FALSE in case the card
132 * is removed, and will be set to TRUE for module removal when
133 * module_exit function is called.
134 */
135static u8 user_rmmod;
136static u8 sdio_ireg;
137
138static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
139 .cfg = 0x03,
140 .host_int_mask = 0x04,
141 .host_intstatus = 0x05,
142 .card_status = 0x20,
143 .sq_read_base_addr_a0 = 0x10,
144 .sq_read_base_addr_a1 = 0x11,
145 .card_fw_status0 = 0x40,
146 .card_fw_status1 = 0x41,
147 .card_rx_len = 0x42,
148 .card_rx_unit = 0x43,
149 .io_port_0 = 0x00,
150 .io_port_1 = 0x01,
151 .io_port_2 = 0x02,
152 .int_read_to_clear = false,
153};
154static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
155 .cfg = 0x00,
156 .host_int_mask = 0x02,
157 .host_intstatus = 0x03,
158 .card_status = 0x30,
159 .sq_read_base_addr_a0 = 0x40,
160 .sq_read_base_addr_a1 = 0x41,
161 .card_revision = 0x5c,
162 .card_fw_status0 = 0x60,
163 .card_fw_status1 = 0x61,
164 .card_rx_len = 0x62,
165 .card_rx_unit = 0x63,
166 .io_port_0 = 0x78,
167 .io_port_1 = 0x79,
168 .io_port_2 = 0x7a,
169 .int_read_to_clear = false,
170};
171
172static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
173 .cfg = 0x00,
174 .host_int_mask = 0x08,
175 .host_intstatus = 0x0C,
176 .card_status = 0x5C,
177 .sq_read_base_addr_a0 = 0x6C,
178 .sq_read_base_addr_a1 = 0x6D,
179 .card_revision = 0xC8,
180 .card_fw_status0 = 0x88,
181 .card_fw_status1 = 0x89,
182 .card_rx_len = 0x8A,
183 .card_rx_unit = 0x8B,
184 .io_port_0 = 0xE4,
185 .io_port_1 = 0xE5,
186 .io_port_2 = 0xE6,
187 .int_read_to_clear = true,
188 .host_int_rsr = 0x04,
189 .card_misc_cfg = 0xD8,
190};
191
192static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
193 .cfg = 0x00,
194 .host_int_mask = 0x02,
195 .host_intstatus = 0x03,
196 .card_status = 0x50,
197 .sq_read_base_addr_a0 = 0x60,
198 .sq_read_base_addr_a1 = 0x61,
199 .card_revision = 0xbc,
200 .card_fw_status0 = 0xc0,
201 .card_fw_status1 = 0xc1,
202 .card_rx_len = 0xc2,
203 .card_rx_unit = 0xc3,
204 .io_port_0 = 0xd8,
205 .io_port_1 = 0xd9,
206 .io_port_2 = 0xda,
207 .int_read_to_clear = true,
208 .host_int_rsr = 0x01,
209 .card_misc_cfg = 0xcc,
210 .fw_dump_ctrl = 0xe2,
211 .fw_dump_start = 0xe3,
212 .fw_dump_end = 0xea,
213};
214
215static const struct btmrvl_sdio_card_reg btmrvl_reg_8977 = {
216 .cfg = 0x00,
217 .host_int_mask = 0x08,
218 .host_intstatus = 0x0c,
219 .card_status = 0x5c,
220 .sq_read_base_addr_a0 = 0xf8,
221 .sq_read_base_addr_a1 = 0xf9,
222 .card_revision = 0xc8,
223 .card_fw_status0 = 0xe8,
224 .card_fw_status1 = 0xe9,
225 .card_rx_len = 0xea,
226 .card_rx_unit = 0xeb,
227 .io_port_0 = 0xe4,
228 .io_port_1 = 0xe5,
229 .io_port_2 = 0xe6,
230 .int_read_to_clear = true,
231 .host_int_rsr = 0x04,
232 .card_misc_cfg = 0xD8,
233 .fw_dump_ctrl = 0xf0,
234 .fw_dump_start = 0xf1,
235 .fw_dump_end = 0xf8,
236};
237
238static const struct btmrvl_sdio_card_reg btmrvl_reg_8997 = {
239 .cfg = 0x00,
240 .host_int_mask = 0x08,
241 .host_intstatus = 0x0c,
242 .card_status = 0x5c,
243 .sq_read_base_addr_a0 = 0xf8,
244 .sq_read_base_addr_a1 = 0xf9,
245 .card_revision = 0xc8,
246 .card_fw_status0 = 0xe8,
247 .card_fw_status1 = 0xe9,
248 .card_rx_len = 0xea,
249 .card_rx_unit = 0xeb,
250 .io_port_0 = 0xe4,
251 .io_port_1 = 0xe5,
252 .io_port_2 = 0xe6,
253 .int_read_to_clear = true,
254 .host_int_rsr = 0x04,
255 .card_misc_cfg = 0xD8,
256 .fw_dump_ctrl = 0xf0,
257 .fw_dump_start = 0xf1,
258 .fw_dump_end = 0xf8,
259};
260
261static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
262 .helper = "mrvl/sd8688_helper.bin",
263 .firmware = "mrvl/sd8688.bin",
264 .reg = &btmrvl_reg_8688,
265 .support_pscan_win_report = false,
266 .sd_blksz_fw_dl = 64,
267 .supports_fw_dump = false,
268};
269
270static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
271 .helper = NULL,
272 .firmware = "mrvl/sd8787_uapsta.bin",
273 .reg = &btmrvl_reg_87xx,
274 .support_pscan_win_report = false,
275 .sd_blksz_fw_dl = 256,
276 .supports_fw_dump = false,
277};
278
279static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
280 .helper = NULL,
281 .firmware = "mrvl/sd8797_uapsta.bin",
282 .reg = &btmrvl_reg_87xx,
283 .support_pscan_win_report = false,
284 .sd_blksz_fw_dl = 256,
285 .supports_fw_dump = false,
286};
287
288static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
289 .helper = NULL,
290 .firmware = "mrvl/sd8887_uapsta.bin",
291 .reg = &btmrvl_reg_8887,
292 .support_pscan_win_report = true,
293 .sd_blksz_fw_dl = 256,
294 .supports_fw_dump = false,
295};
296
297static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
298 .helper = NULL,
299 .firmware = "mrvl/sd8897_uapsta.bin",
300 .reg = &btmrvl_reg_8897,
301 .support_pscan_win_report = true,
302 .sd_blksz_fw_dl = 256,
303 .supports_fw_dump = true,
304};
305
306static const struct btmrvl_sdio_device btmrvl_sdio_sd8977 = {
307 .helper = NULL,
308 .firmware = "mrvl/sd8977_uapsta.bin",
309 .reg = &btmrvl_reg_8977,
310 .support_pscan_win_report = true,
311 .sd_blksz_fw_dl = 256,
312 .supports_fw_dump = true,
313};
314
315static const struct btmrvl_sdio_device btmrvl_sdio_sd8997 = {
316 .helper = NULL,
317 .firmware = "mrvl/sd8997_uapsta.bin",
318 .reg = &btmrvl_reg_8997,
319 .support_pscan_win_report = true,
320 .sd_blksz_fw_dl = 256,
321 .supports_fw_dump = true,
322};
323
324static const struct sdio_device_id btmrvl_sdio_ids[] = {
325 /* Marvell SD8688 Bluetooth device */
326 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9105),
327 .driver_data = (unsigned long)&btmrvl_sdio_sd8688 },
328 /* Marvell SD8787 Bluetooth device */
329 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911A),
330 .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
331 /* Marvell SD8787 Bluetooth AMP device */
332 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x911B),
333 .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
334 /* Marvell SD8797 Bluetooth device */
335 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912A),
336 .driver_data = (unsigned long)&btmrvl_sdio_sd8797 },
337 /* Marvell SD8887 Bluetooth device */
338 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9136),
339 .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
340 /* Marvell SD8897 Bluetooth device */
341 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x912E),
342 .driver_data = (unsigned long)&btmrvl_sdio_sd8897 },
343 /* Marvell SD8977 Bluetooth device */
344 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9146),
345 .driver_data = (unsigned long)&btmrvl_sdio_sd8977 },
346 /* Marvell SD8997 Bluetooth device */
347 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, 0x9142),
348 .driver_data = (unsigned long)&btmrvl_sdio_sd8997 },
349
350 { } /* Terminating entry */
351};
352
353MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
354
355static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
356{
357 u8 reg;
358 int ret;
359
360 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
361 if (!ret)
362 card->rx_unit = reg;
363
364 return ret;
365}
366
367static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
368{
369 u8 fws0, fws1;
370 int ret;
371
372 *dat = 0;
373
374 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
375 if (ret)
376 return -EIO;
377
378 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
379 if (ret)
380 return -EIO;
381
382 *dat = (((u16) fws1) << 8) | fws0;
383
384 return 0;
385}
386
387static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
388{
389 u8 reg;
390 int ret;
391
392 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
393 if (!ret)
394 *dat = (u16) reg << card->rx_unit;
395
396 return ret;
397}
398
399static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
400 u8 mask)
401{
402 int ret;
403
404 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
405 if (ret) {
406 BT_ERR("Unable to enable the host interrupt!");
407 ret = -EIO;
408 }
409
410 return ret;
411}
412
413static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
414 u8 mask)
415{
416 u8 host_int_mask;
417 int ret;
418
419 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
420 if (ret)
421 return -EIO;
422
423 host_int_mask &= ~mask;
424
425 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
426 if (ret < 0) {
427 BT_ERR("Unable to disable the host interrupt!");
428 return -EIO;
429 }
430
431 return 0;
432}
433
434static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
435{
436 unsigned int tries;
437 u8 status;
438 int ret;
439
440 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
441 status = sdio_readb(card->func, card->reg->card_status, &ret);
442 if (ret)
443 goto failed;
444 if ((status & bits) == bits)
445 return ret;
446
447 udelay(1);
448 }
449
450 ret = -ETIMEDOUT;
451
452failed:
453 BT_ERR("FAILED! ret=%d", ret);
454
455 return ret;
456}
457
458static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
459 int pollnum)
460{
461 u16 firmwarestat;
462 int tries, ret;
463
464 /* Wait for firmware to become ready */
465 for (tries = 0; tries < pollnum; tries++) {
466 sdio_claim_host(card->func);
467 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
468 sdio_release_host(card->func);
469 if (ret < 0)
470 continue;
471
472 if (firmwarestat == FIRMWARE_READY)
473 return 0;
474
475 msleep(100);
476 }
477
478 return -ETIMEDOUT;
479}
480
481static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
482{
483 const struct firmware *fw_helper = NULL;
484 const u8 *helper = NULL;
485 int ret;
486 void *tmphlprbuf = NULL;
487 int tmphlprbufsz, hlprblknow, helperlen;
488 u8 *helperbuf;
489 u32 tx_len;
490
491 ret = request_firmware(&fw_helper, card->helper,
492 &card->func->dev);
493 if ((ret < 0) || !fw_helper) {
494 BT_ERR("request_firmware(helper) failed, error code = %d",
495 ret);
496 ret = -ENOENT;
497 goto done;
498 }
499
500 helper = fw_helper->data;
501 helperlen = fw_helper->size;
502
503 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
504 helperlen, SDIO_BLOCK_SIZE);
505
506 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
507
508 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
509 if (!tmphlprbuf) {
510 BT_ERR("Unable to allocate buffer for helper."
511 " Terminating download");
512 ret = -ENOMEM;
513 goto done;
514 }
515
516 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
517
518 /* Perform helper data transfer */
519 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
520 - SDIO_HEADER_LEN;
521 hlprblknow = 0;
522
523 do {
524 ret = btmrvl_sdio_poll_card_status(card,
525 CARD_IO_READY | DN_LD_CARD_RDY);
526 if (ret < 0) {
527 BT_ERR("Helper download poll status timeout @ %d",
528 hlprblknow);
529 goto done;
530 }
531
532 /* Check if there is more data? */
533 if (hlprblknow >= helperlen)
534 break;
535
536 if (helperlen - hlprblknow < tx_len)
537 tx_len = helperlen - hlprblknow;
538
539 /* Little-endian */
540 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
541 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
542 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
543 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
544
545 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
546 tx_len);
547
548 /* Now send the data */
549 ret = sdio_writesb(card->func, card->ioport, helperbuf,
550 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
551 if (ret < 0) {
552 BT_ERR("IO error during helper download @ %d",
553 hlprblknow);
554 goto done;
555 }
556
557 hlprblknow += tx_len;
558 } while (true);
559
560 BT_DBG("Transferring helper image EOF block");
561
562 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
563
564 ret = sdio_writesb(card->func, card->ioport, helperbuf,
565 SDIO_BLOCK_SIZE);
566 if (ret < 0) {
567 BT_ERR("IO error in writing helper image EOF block");
568 goto done;
569 }
570
571 ret = 0;
572
573done:
574 kfree(tmphlprbuf);
575 release_firmware(fw_helper);
576 return ret;
577}
578
579static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
580{
581 const struct firmware *fw_firmware = NULL;
582 const u8 *firmware = NULL;
583 int firmwarelen, tmpfwbufsz, ret;
584 unsigned int tries, offset;
585 u8 base0, base1;
586 void *tmpfwbuf = NULL;
587 u8 *fwbuf;
588 u16 len, blksz_dl = card->sd_blksz_fw_dl;
589 int txlen = 0, tx_blocks = 0, count = 0;
590
591 ret = request_firmware(&fw_firmware, card->firmware,
592 &card->func->dev);
593 if ((ret < 0) || !fw_firmware) {
594 BT_ERR("request_firmware(firmware) failed, error code = %d",
595 ret);
596 ret = -ENOENT;
597 goto done;
598 }
599
600 firmware = fw_firmware->data;
601 firmwarelen = fw_firmware->size;
602
603 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
604
605 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
606 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
607 if (!tmpfwbuf) {
608 BT_ERR("Unable to allocate buffer for firmware."
609 " Terminating download");
610 ret = -ENOMEM;
611 goto done;
612 }
613
614 /* Ensure aligned firmware buffer */
615 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
616
617 /* Perform firmware data transfer */
618 offset = 0;
619 do {
620 ret = btmrvl_sdio_poll_card_status(card,
621 CARD_IO_READY | DN_LD_CARD_RDY);
622 if (ret < 0) {
623 BT_ERR("FW download with helper poll status"
624 " timeout @ %d", offset);
625 goto done;
626 }
627
628 /* Check if there is more data ? */
629 if (offset >= firmwarelen)
630 break;
631
632 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
633 base0 = sdio_readb(card->func,
634 card->reg->sq_read_base_addr_a0, &ret);
635 if (ret) {
636 BT_ERR("BASE0 register read failed:"
637 " base0 = 0x%04X(%d)."
638 " Terminating download",
639 base0, base0);
640 ret = -EIO;
641 goto done;
642 }
643 base1 = sdio_readb(card->func,
644 card->reg->sq_read_base_addr_a1, &ret);
645 if (ret) {
646 BT_ERR("BASE1 register read failed:"
647 " base1 = 0x%04X(%d)."
648 " Terminating download",
649 base1, base1);
650 ret = -EIO;
651 goto done;
652 }
653
654 len = (((u16) base1) << 8) | base0;
655 if (len)
656 break;
657
658 udelay(10);
659 }
660
661 if (!len)
662 break;
663 else if (len > BTM_UPLD_SIZE) {
664 BT_ERR("FW download failure @%d, invalid length %d",
665 offset, len);
666 ret = -EINVAL;
667 goto done;
668 }
669
670 txlen = len;
671
672 if (len & BIT(0)) {
673 count++;
674 if (count > MAX_WRITE_IOMEM_RETRY) {
675 BT_ERR("FW download failure @%d, "
676 "over max retry count", offset);
677 ret = -EIO;
678 goto done;
679 }
680 BT_ERR("FW CRC error indicated by the helper: "
681 "len = 0x%04X, txlen = %d", len, txlen);
682 len &= ~BIT(0);
683 /* Set txlen to 0 so as to resend from same offset */
684 txlen = 0;
685 } else {
686 count = 0;
687
688 /* Last block ? */
689 if (firmwarelen - offset < txlen)
690 txlen = firmwarelen - offset;
691
692 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
693
694 memcpy(fwbuf, &firmware[offset], txlen);
695 }
696
697 ret = sdio_writesb(card->func, card->ioport, fwbuf,
698 tx_blocks * blksz_dl);
699
700 if (ret < 0) {
701 BT_ERR("FW download, writesb(%d) failed @%d",
702 count, offset);
703 sdio_writeb(card->func, HOST_CMD53_FIN,
704 card->reg->cfg, &ret);
705 if (ret)
706 BT_ERR("writeb failed (CFG)");
707 }
708
709 offset += txlen;
710 } while (true);
711
712 BT_INFO("FW download over, size %d bytes", offset);
713
714 ret = 0;
715
716done:
717 kfree(tmpfwbuf);
718 release_firmware(fw_firmware);
719 return ret;
720}
721
722static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
723{
724 u16 buf_len = 0;
725 int ret, num_blocks, blksz;
726 struct sk_buff *skb = NULL;
727 u32 type;
728 u8 *payload;
729 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
730 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
731
732 if (!card || !card->func) {
733 BT_ERR("card or function is NULL!");
734 ret = -EINVAL;
735 goto exit;
736 }
737
738 /* Read the length of data to be transferred */
739 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
740 if (ret < 0) {
741 BT_ERR("read rx_len failed");
742 ret = -EIO;
743 goto exit;
744 }
745
746 blksz = SDIO_BLOCK_SIZE;
747 num_blocks = DIV_ROUND_UP(buf_len, blksz);
748
749 if (buf_len <= SDIO_HEADER_LEN
750 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
751 BT_ERR("invalid packet length: %d", buf_len);
752 ret = -EINVAL;
753 goto exit;
754 }
755
756 /* Allocate buffer */
757 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_KERNEL);
758 if (!skb) {
759 BT_ERR("No free skb");
760 ret = -ENOMEM;
761 goto exit;
762 }
763
764 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
765 skb_put(skb, (unsigned long) skb->data &
766 (BTSDIO_DMA_ALIGN - 1));
767 skb_pull(skb, (unsigned long) skb->data &
768 (BTSDIO_DMA_ALIGN - 1));
769 }
770
771 payload = skb->data;
772
773 ret = sdio_readsb(card->func, payload, card->ioport,
774 num_blocks * blksz);
775 if (ret < 0) {
776 BT_ERR("readsb failed: %d", ret);
777 ret = -EIO;
778 goto exit;
779 }
780
781 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
782 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
783 */
784
785 buf_len = payload[0];
786 buf_len |= payload[1] << 8;
787 buf_len |= payload[2] << 16;
788
789 if (buf_len > blksz * num_blocks) {
790 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
791 buf_len, blksz * num_blocks);
792 ret = -EIO;
793 goto exit;
794 }
795
796 type = payload[3];
797
798 switch (type) {
799 case HCI_ACLDATA_PKT:
800 case HCI_SCODATA_PKT:
801 case HCI_EVENT_PKT:
802 hci_skb_pkt_type(skb) = type;
803 skb_put(skb, buf_len);
804 skb_pull(skb, SDIO_HEADER_LEN);
805
806 if (type == HCI_EVENT_PKT) {
807 if (btmrvl_check_evtpkt(priv, skb))
808 hci_recv_frame(hdev, skb);
809 } else {
810 hci_recv_frame(hdev, skb);
811 }
812
813 hdev->stat.byte_rx += buf_len;
814 break;
815
816 case MRVL_VENDOR_PKT:
817 hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
818 skb_put(skb, buf_len);
819 skb_pull(skb, SDIO_HEADER_LEN);
820
821 if (btmrvl_process_event(priv, skb))
822 hci_recv_frame(hdev, skb);
823
824 hdev->stat.byte_rx += buf_len;
825 break;
826
827 default:
828 BT_ERR("Unknown packet type:%d", type);
829 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
830
831 kfree_skb(skb);
832 skb = NULL;
833 break;
834 }
835
836exit:
837 if (ret) {
838 hdev->stat.err_rx++;
839 kfree_skb(skb);
840 }
841
842 return ret;
843}
844
845static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
846{
847 ulong flags;
848 u8 ireg;
849 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
850
851 spin_lock_irqsave(&priv->driver_lock, flags);
852 ireg = sdio_ireg;
853 sdio_ireg = 0;
854 spin_unlock_irqrestore(&priv->driver_lock, flags);
855
856 sdio_claim_host(card->func);
857 if (ireg & DN_LD_HOST_INT_STATUS) {
858 if (priv->btmrvl_dev.tx_dnld_rdy)
859 BT_DBG("tx_done already received: "
860 " int_status=0x%x", ireg);
861 else
862 priv->btmrvl_dev.tx_dnld_rdy = true;
863 }
864
865 if (ireg & UP_LD_HOST_INT_STATUS)
866 btmrvl_sdio_card_to_host(priv);
867
868 sdio_release_host(card->func);
869
870 return 0;
871}
872
873static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
874{
875 struct btmrvl_adapter *adapter = card->priv->adapter;
876 int ret;
877
878 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
879 if (ret) {
880 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
881 return ret;
882 }
883
884 *ireg = adapter->hw_regs[card->reg->host_intstatus];
885 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
886
887 return 0;
888}
889
890static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
891{
892 int ret;
893
894 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
895 if (ret) {
896 BT_ERR("sdio_readb: read int status failed: %d", ret);
897 return ret;
898 }
899
900 if (*ireg) {
901 /*
902 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
903 * Clear the interrupt status register and re-enable the
904 * interrupt.
905 */
906 BT_DBG("int_status = 0x%x", *ireg);
907
908 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
909 UP_LD_HOST_INT_STATUS),
910 card->reg->host_intstatus, &ret);
911 if (ret) {
912 BT_ERR("sdio_writeb: clear int status failed: %d", ret);
913 return ret;
914 }
915 }
916
917 return 0;
918}
919
920static void btmrvl_sdio_interrupt(struct sdio_func *func)
921{
922 struct btmrvl_private *priv;
923 struct btmrvl_sdio_card *card;
924 ulong flags;
925 u8 ireg = 0;
926 int ret;
927
928 card = sdio_get_drvdata(func);
929 if (!card || !card->priv) {
930 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
931 func, card);
932 return;
933 }
934
935 priv = card->priv;
936
937 if (priv->surprise_removed)
938 return;
939
940 if (card->reg->int_read_to_clear)
941 ret = btmrvl_sdio_read_to_clear(card, &ireg);
942 else
943 ret = btmrvl_sdio_write_to_clear(card, &ireg);
944
945 if (ret)
946 return;
947
948 spin_lock_irqsave(&priv->driver_lock, flags);
949 sdio_ireg |= ireg;
950 spin_unlock_irqrestore(&priv->driver_lock, flags);
951
952 btmrvl_interrupt(priv);
953}
954
955static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
956{
957 struct sdio_func *func;
958 u8 reg;
959 int ret;
960
961 if (!card || !card->func) {
962 BT_ERR("Error: card or function is NULL!");
963 ret = -EINVAL;
964 goto failed;
965 }
966
967 func = card->func;
968
969 sdio_claim_host(func);
970
971 ret = sdio_enable_func(func);
972 if (ret) {
973 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
974 ret = -EIO;
975 goto release_host;
976 }
977
978 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
979 if (ret) {
980 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
981 ret = -EIO;
982 goto disable_func;
983 }
984
985 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
986 if (ret) {
987 BT_ERR("cannot set SDIO block size");
988 ret = -EIO;
989 goto release_irq;
990 }
991
992 reg = sdio_readb(func, card->reg->io_port_0, &ret);
993 if (ret < 0) {
994 ret = -EIO;
995 goto release_irq;
996 }
997
998 card->ioport = reg;
999
1000 reg = sdio_readb(func, card->reg->io_port_1, &ret);
1001 if (ret < 0) {
1002 ret = -EIO;
1003 goto release_irq;
1004 }
1005
1006 card->ioport |= (reg << 8);
1007
1008 reg = sdio_readb(func, card->reg->io_port_2, &ret);
1009 if (ret < 0) {
1010 ret = -EIO;
1011 goto release_irq;
1012 }
1013
1014 card->ioport |= (reg << 16);
1015
1016 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
1017
1018 if (card->reg->int_read_to_clear) {
1019 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
1020 if (ret < 0) {
1021 ret = -EIO;
1022 goto release_irq;
1023 }
1024 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
1025 if (ret < 0) {
1026 ret = -EIO;
1027 goto release_irq;
1028 }
1029
1030 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
1031 if (ret < 0) {
1032 ret = -EIO;
1033 goto release_irq;
1034 }
1035 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
1036 if (ret < 0) {
1037 ret = -EIO;
1038 goto release_irq;
1039 }
1040 }
1041
1042 sdio_set_drvdata(func, card);
1043
1044 sdio_release_host(func);
1045
1046 return 0;
1047
1048release_irq:
1049 sdio_release_irq(func);
1050
1051disable_func:
1052 sdio_disable_func(func);
1053
1054release_host:
1055 sdio_release_host(func);
1056
1057failed:
1058 return ret;
1059}
1060
1061static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
1062{
1063 if (card && card->func) {
1064 sdio_claim_host(card->func);
1065 sdio_release_irq(card->func);
1066 sdio_disable_func(card->func);
1067 sdio_release_host(card->func);
1068 sdio_set_drvdata(card->func, NULL);
1069 }
1070
1071 return 0;
1072}
1073
1074static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
1075{
1076 int ret;
1077
1078 if (!card || !card->func)
1079 return -EINVAL;
1080
1081 sdio_claim_host(card->func);
1082
1083 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
1084
1085 btmrvl_sdio_get_rx_unit(card);
1086
1087 sdio_release_host(card->func);
1088
1089 return ret;
1090}
1091
1092static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
1093{
1094 int ret;
1095
1096 if (!card || !card->func)
1097 return -EINVAL;
1098
1099 sdio_claim_host(card->func);
1100
1101 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
1102
1103 sdio_release_host(card->func);
1104
1105 return ret;
1106}
1107
1108static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
1109 u8 *payload, u16 nb)
1110{
1111 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1112 int ret = 0;
1113 int blksz;
1114 int i = 0;
1115 u8 *buf = NULL;
1116 void *tmpbuf = NULL;
1117 int tmpbufsz;
1118
1119 if (!card || !card->func) {
1120 BT_ERR("card or function is NULL!");
1121 return -EINVAL;
1122 }
1123
1124 blksz = DIV_ROUND_UP(nb, SDIO_BLOCK_SIZE) * SDIO_BLOCK_SIZE;
1125
1126 buf = payload;
1127 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1) ||
1128 nb < blksz) {
1129 tmpbufsz = ALIGN_SZ(blksz, BTSDIO_DMA_ALIGN) +
1130 BTSDIO_DMA_ALIGN;
1131 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
1132 if (!tmpbuf)
1133 return -ENOMEM;
1134 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
1135 memcpy(buf, payload, nb);
1136 }
1137
1138 sdio_claim_host(card->func);
1139
1140 do {
1141 /* Transfer data to card */
1142 ret = sdio_writesb(card->func, card->ioport, buf,
1143 blksz);
1144 if (ret < 0) {
1145 i++;
1146 BT_ERR("i=%d writesb failed: %d", i, ret);
1147 BT_ERR("hex: %*ph", nb, payload);
1148 ret = -EIO;
1149 if (i > MAX_WRITE_IOMEM_RETRY)
1150 goto exit;
1151 }
1152 } while (ret);
1153
1154 priv->btmrvl_dev.tx_dnld_rdy = false;
1155
1156exit:
1157 sdio_release_host(card->func);
1158 kfree(tmpbuf);
1159
1160 return ret;
1161}
1162
1163static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1164{
1165 int ret;
1166 u8 fws0;
1167 int pollnum = MAX_POLL_TRIES;
1168
1169 if (!card || !card->func) {
1170 BT_ERR("card or function is NULL!");
1171 return -EINVAL;
1172 }
1173
1174 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1175 BT_DBG("Firmware already downloaded!");
1176 return 0;
1177 }
1178
1179 sdio_claim_host(card->func);
1180
1181 /* Check if other function driver is downloading the firmware */
1182 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1183 if (ret) {
1184 BT_ERR("Failed to read FW downloading status!");
1185 ret = -EIO;
1186 goto done;
1187 }
1188 if (fws0) {
1189 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1190
1191 /* Give other function more time to download the firmware */
1192 pollnum *= 10;
1193 } else {
1194 if (card->helper) {
1195 ret = btmrvl_sdio_download_helper(card);
1196 if (ret) {
1197 BT_ERR("Failed to download helper!");
1198 ret = -EIO;
1199 goto done;
1200 }
1201 }
1202
1203 if (btmrvl_sdio_download_fw_w_helper(card)) {
1204 BT_ERR("Failed to download firmware!");
1205 ret = -EIO;
1206 goto done;
1207 }
1208 }
1209
1210 /*
1211 * winner or not, with this test the FW synchronizes when the
1212 * module can continue its initialization
1213 */
1214 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1215 BT_ERR("FW failed to be active in time!");
1216 ret = -ETIMEDOUT;
1217 goto done;
1218 }
1219
1220 sdio_release_host(card->func);
1221
1222 return 0;
1223
1224done:
1225 sdio_release_host(card->func);
1226 return ret;
1227}
1228
1229static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1230{
1231 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1232 int ret = 0;
1233
1234 if (!card || !card->func) {
1235 BT_ERR("card or function is NULL!");
1236 return -EINVAL;
1237 }
1238
1239 sdio_claim_host(card->func);
1240
1241 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1242
1243 sdio_release_host(card->func);
1244
1245 BT_DBG("wake up firmware");
1246
1247 return ret;
1248}
1249
1250static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1251{
1252 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1253 int ret = 0;
1254 unsigned int reg, reg_start, reg_end;
1255 char buf[256], *ptr;
1256 u8 loop, func, data;
1257 int MAX_LOOP = 2;
1258
1259 btmrvl_sdio_wakeup_fw(priv);
1260 sdio_claim_host(card->func);
1261
1262 for (loop = 0; loop < MAX_LOOP; loop++) {
1263 memset(buf, 0, sizeof(buf));
1264 ptr = buf;
1265
1266 if (loop == 0) {
1267 /* Read the registers of SDIO function0 */
1268 func = loop;
1269 reg_start = 0;
1270 reg_end = 9;
1271 } else {
1272 func = 2;
1273 reg_start = 0;
1274 reg_end = 0x09;
1275 }
1276
1277 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1278 func, reg_start, reg_end);
1279 for (reg = reg_start; reg <= reg_end; reg++) {
1280 if (func == 0)
1281 data = sdio_f0_readb(card->func, reg, &ret);
1282 else
1283 data = sdio_readb(card->func, reg, &ret);
1284
1285 if (!ret) {
1286 ptr += sprintf(ptr, "%02x ", data);
1287 } else {
1288 ptr += sprintf(ptr, "ERR");
1289 break;
1290 }
1291 }
1292
1293 BT_INFO("%s", buf);
1294 }
1295
1296 sdio_release_host(card->func);
1297}
1298
1299/* This function read/write firmware */
1300static enum
1301rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1302 u8 doneflag)
1303{
1304 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1305 int ret, tries;
1306 u8 ctrl_data = 0;
1307
1308 sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1309 &ret);
1310
1311 if (ret) {
1312 BT_ERR("SDIO write err");
1313 return RDWR_STATUS_FAILURE;
1314 }
1315
1316 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1317 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1318 &ret);
1319
1320 if (ret) {
1321 BT_ERR("SDIO read err");
1322 return RDWR_STATUS_FAILURE;
1323 }
1324
1325 if (ctrl_data == FW_DUMP_DONE)
1326 break;
1327 if (doneflag && ctrl_data == doneflag)
1328 return RDWR_STATUS_DONE;
1329 if (ctrl_data != FW_DUMP_HOST_READY) {
1330 BT_INFO("The ctrl reg was changed, re-try again!");
1331 sdio_writeb(card->func, FW_DUMP_HOST_READY,
1332 card->reg->fw_dump_ctrl, &ret);
1333 if (ret) {
1334 BT_ERR("SDIO write err");
1335 return RDWR_STATUS_FAILURE;
1336 }
1337 }
1338 usleep_range(100, 200);
1339 }
1340
1341 if (ctrl_data == FW_DUMP_HOST_READY) {
1342 BT_ERR("Fail to pull ctrl_data");
1343 return RDWR_STATUS_FAILURE;
1344 }
1345
1346 return RDWR_STATUS_SUCCESS;
1347}
1348
1349/* This function dump sdio register and memory data */
1350static void btmrvl_sdio_coredump(struct device *dev)
1351{
1352 struct sdio_func *func = dev_to_sdio_func(dev);
1353 struct btmrvl_sdio_card *card;
1354 struct btmrvl_private *priv;
1355 int ret = 0;
1356 unsigned int reg, reg_start, reg_end;
1357 enum rdwr_status stat;
1358 u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1359 u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
1360 u32 memory_size, fw_dump_len = 0;
1361
1362 card = sdio_get_drvdata(func);
1363 priv = card->priv;
1364
1365 /* dump sdio register first */
1366 btmrvl_sdio_dump_regs(priv);
1367
1368 if (!card->supports_fw_dump) {
1369 BT_ERR("Firmware dump not supported for this card!");
1370 return;
1371 }
1372
1373 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1374 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1375
1376 if (entry->mem_ptr) {
1377 vfree(entry->mem_ptr);
1378 entry->mem_ptr = NULL;
1379 }
1380 entry->mem_size = 0;
1381 }
1382
1383 btmrvl_sdio_wakeup_fw(priv);
1384 sdio_claim_host(card->func);
1385
1386 BT_INFO("== btmrvl firmware dump start ==");
1387
1388 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1389 if (stat == RDWR_STATUS_FAILURE)
1390 goto done;
1391
1392 reg = card->reg->fw_dump_start;
1393 /* Read the number of the memories which will dump */
1394 dump_num = sdio_readb(card->func, reg, &ret);
1395
1396 if (ret) {
1397 BT_ERR("SDIO read memory length err");
1398 goto done;
1399 }
1400
1401 /* Read the length of every memory which will dump */
1402 for (idx = 0; idx < dump_num; idx++) {
1403 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1404
1405 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1406 if (stat == RDWR_STATUS_FAILURE)
1407 goto done;
1408
1409 memory_size = 0;
1410 reg = card->reg->fw_dump_start;
1411 for (i = 0; i < 4; i++) {
1412 read_reg = sdio_readb(card->func, reg, &ret);
1413 if (ret) {
1414 BT_ERR("SDIO read err");
1415 goto done;
1416 }
1417 memory_size |= (read_reg << i*8);
1418 reg++;
1419 }
1420
1421 if (memory_size == 0) {
1422 BT_INFO("Firmware dump finished!");
1423 sdio_writeb(card->func, FW_DUMP_READ_DONE,
1424 card->reg->fw_dump_ctrl, &ret);
1425 if (ret) {
1426 BT_ERR("SDIO Write MEMDUMP_FINISH ERR");
1427 goto done;
1428 }
1429 break;
1430 }
1431
1432 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1433 entry->mem_ptr = vzalloc(memory_size + 1);
1434 entry->mem_size = memory_size;
1435 if (!entry->mem_ptr) {
1436 BT_ERR("Vzalloc %s failed", entry->mem_name);
1437 goto done;
1438 }
1439
1440 fw_dump_len += (strlen("========Start dump ") +
1441 strlen(entry->mem_name) +
1442 strlen("========\n") +
1443 (memory_size + 1) +
1444 strlen("\n========End dump========\n"));
1445
1446 dbg_ptr = entry->mem_ptr;
1447 end_ptr = dbg_ptr + memory_size;
1448
1449 doneflag = entry->done_flag;
1450 BT_INFO("Start %s output, please wait...",
1451 entry->mem_name);
1452
1453 do {
1454 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1455 if (stat == RDWR_STATUS_FAILURE)
1456 goto done;
1457
1458 reg_start = card->reg->fw_dump_start;
1459 reg_end = card->reg->fw_dump_end;
1460 for (reg = reg_start; reg <= reg_end; reg++) {
1461 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1462 if (ret) {
1463 BT_ERR("SDIO read err");
1464 goto done;
1465 }
1466 if (dbg_ptr < end_ptr)
1467 dbg_ptr++;
1468 else
1469 BT_ERR("Allocated buffer not enough");
1470 }
1471
1472 if (stat != RDWR_STATUS_DONE) {
1473 continue;
1474 } else {
1475 BT_INFO("%s done: size=0x%tx",
1476 entry->mem_name,
1477 dbg_ptr - entry->mem_ptr);
1478 break;
1479 }
1480 } while (1);
1481 }
1482
1483 BT_INFO("== btmrvl firmware dump end ==");
1484
1485done:
1486 sdio_release_host(card->func);
1487
1488 if (fw_dump_len == 0)
1489 return;
1490
1491 fw_dump_data = vzalloc(fw_dump_len+1);
1492 if (!fw_dump_data) {
1493 BT_ERR("Vzalloc fw_dump_data fail!");
1494 return;
1495 }
1496 fw_dump_ptr = fw_dump_data;
1497
1498 /* Dump all the memory data into single file, a userspace script will
1499 * be used to split all the memory data to multiple files
1500 */
1501 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1502 for (idx = 0; idx < dump_num; idx++) {
1503 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1504
1505 if (entry->mem_ptr) {
1506 strcpy(fw_dump_ptr, "========Start dump ");
1507 fw_dump_ptr += strlen("========Start dump ");
1508
1509 strcpy(fw_dump_ptr, entry->mem_name);
1510 fw_dump_ptr += strlen(entry->mem_name);
1511
1512 strcpy(fw_dump_ptr, "========\n");
1513 fw_dump_ptr += strlen("========\n");
1514
1515 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1516 fw_dump_ptr += entry->mem_size;
1517
1518 strcpy(fw_dump_ptr, "\n========End dump========\n");
1519 fw_dump_ptr += strlen("\n========End dump========\n");
1520
1521 vfree(mem_type_mapping_tbl[idx].mem_ptr);
1522 mem_type_mapping_tbl[idx].mem_ptr = NULL;
1523 }
1524 }
1525
1526 /* fw_dump_data will be free in device coredump release function
1527 * after 5 min
1528 */
1529 dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
1530 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1531}
1532
1533static int btmrvl_sdio_probe(struct sdio_func *func,
1534 const struct sdio_device_id *id)
1535{
1536 int ret = 0;
1537 struct btmrvl_private *priv = NULL;
1538 struct btmrvl_sdio_card *card = NULL;
1539
1540 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1541 id->vendor, id->device, id->class, func->num);
1542
1543 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1544 if (!card)
1545 return -ENOMEM;
1546
1547 card->func = func;
1548
1549 if (id->driver_data) {
1550 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1551 card->helper = data->helper;
1552 card->firmware = data->firmware;
1553 card->reg = data->reg;
1554 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1555 card->support_pscan_win_report = data->support_pscan_win_report;
1556 card->supports_fw_dump = data->supports_fw_dump;
1557 }
1558
1559 if (btmrvl_sdio_register_dev(card) < 0) {
1560 BT_ERR("Failed to register BT device!");
1561 return -ENODEV;
1562 }
1563
1564 /* Disable the interrupts on the card */
1565 btmrvl_sdio_disable_host_int(card);
1566
1567 if (btmrvl_sdio_download_fw(card)) {
1568 BT_ERR("Downloading firmware failed!");
1569 ret = -ENODEV;
1570 goto unreg_dev;
1571 }
1572
1573 btmrvl_sdio_enable_host_int(card);
1574
1575 /* Device tree node parsing and platform specific configuration*/
1576 btmrvl_sdio_probe_of(&func->dev, card);
1577
1578 priv = btmrvl_add_card(card);
1579 if (!priv) {
1580 BT_ERR("Initializing card failed!");
1581 ret = -ENODEV;
1582 goto disable_host_int;
1583 }
1584
1585 card->priv = priv;
1586
1587 /* Initialize the interface specific function pointers */
1588 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1589 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1590 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1591
1592 if (btmrvl_register_hdev(priv)) {
1593 BT_ERR("Register hdev failed!");
1594 ret = -ENODEV;
1595 goto disable_host_int;
1596 }
1597
1598 return 0;
1599
1600disable_host_int:
1601 btmrvl_sdio_disable_host_int(card);
1602unreg_dev:
1603 btmrvl_sdio_unregister_dev(card);
1604 return ret;
1605}
1606
1607static void btmrvl_sdio_remove(struct sdio_func *func)
1608{
1609 struct btmrvl_sdio_card *card;
1610
1611 if (func) {
1612 card = sdio_get_drvdata(func);
1613 if (card) {
1614 /* Send SHUTDOWN command & disable interrupt
1615 * if user removes the module.
1616 */
1617 if (user_rmmod) {
1618 btmrvl_send_module_cfg_cmd(card->priv,
1619 MODULE_SHUTDOWN_REQ);
1620 btmrvl_sdio_disable_host_int(card);
1621 }
1622 BT_DBG("unregister dev");
1623 card->priv->surprise_removed = true;
1624 btmrvl_sdio_unregister_dev(card);
1625 btmrvl_remove_card(card->priv);
1626 }
1627 }
1628}
1629
1630static int btmrvl_sdio_suspend(struct device *dev)
1631{
1632 struct sdio_func *func = dev_to_sdio_func(dev);
1633 struct btmrvl_sdio_card *card;
1634 struct btmrvl_private *priv;
1635 mmc_pm_flag_t pm_flags;
1636 struct hci_dev *hcidev;
1637
1638 if (func) {
1639 pm_flags = sdio_get_host_pm_caps(func);
1640 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1641 pm_flags);
1642 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1643 BT_ERR("%s: cannot remain alive while suspended",
1644 sdio_func_id(func));
1645 return -ENOSYS;
1646 }
1647 card = sdio_get_drvdata(func);
1648 if (!card || !card->priv) {
1649 BT_ERR("card or priv structure is not valid");
1650 return 0;
1651 }
1652 } else {
1653 BT_ERR("sdio_func is not specified");
1654 return 0;
1655 }
1656
1657 /* Enable platform specific wakeup interrupt */
1658 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
1659 card->plt_wake_cfg->wake_by_bt = false;
1660 enable_irq(card->plt_wake_cfg->irq_bt);
1661 enable_irq_wake(card->plt_wake_cfg->irq_bt);
1662 }
1663
1664 priv = card->priv;
1665 priv->adapter->is_suspending = true;
1666 hcidev = priv->btmrvl_dev.hcidev;
1667 BT_DBG("%s: SDIO suspend", hcidev->name);
1668 hci_suspend_dev(hcidev);
1669
1670 if (priv->adapter->hs_state != HS_ACTIVATED) {
1671 if (btmrvl_enable_hs(priv)) {
1672 BT_ERR("HS not activated, suspend failed!");
1673 /* Disable platform specific wakeup interrupt */
1674 if (card->plt_wake_cfg &&
1675 card->plt_wake_cfg->irq_bt >= 0) {
1676 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1677 disable_irq(card->plt_wake_cfg->irq_bt);
1678 }
1679
1680 priv->adapter->is_suspending = false;
1681 return -EBUSY;
1682 }
1683 }
1684
1685 priv->adapter->is_suspending = false;
1686 priv->adapter->is_suspended = true;
1687
1688 /* We will keep the power when hs enabled successfully */
1689 if (priv->adapter->hs_state == HS_ACTIVATED) {
1690 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1691 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1692 }
1693
1694 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1695 return 0;
1696}
1697
1698static int btmrvl_sdio_resume(struct device *dev)
1699{
1700 struct sdio_func *func = dev_to_sdio_func(dev);
1701 struct btmrvl_sdio_card *card;
1702 struct btmrvl_private *priv;
1703 mmc_pm_flag_t pm_flags;
1704 struct hci_dev *hcidev;
1705
1706 if (func) {
1707 pm_flags = sdio_get_host_pm_caps(func);
1708 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1709 pm_flags);
1710 card = sdio_get_drvdata(func);
1711 if (!card || !card->priv) {
1712 BT_ERR("card or priv structure is not valid");
1713 return 0;
1714 }
1715 } else {
1716 BT_ERR("sdio_func is not specified");
1717 return 0;
1718 }
1719 priv = card->priv;
1720
1721 if (!priv->adapter->is_suspended) {
1722 BT_DBG("device already resumed");
1723 return 0;
1724 }
1725
1726 priv->hw_wakeup_firmware(priv);
1727 priv->adapter->hs_state = HS_DEACTIVATED;
1728 hcidev = priv->btmrvl_dev.hcidev;
1729 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1730 priv->adapter->is_suspended = false;
1731 BT_DBG("%s: SDIO resume", hcidev->name);
1732 hci_resume_dev(hcidev);
1733
1734 /* Disable platform specific wakeup interrupt */
1735 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0) {
1736 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1737 disable_irq(card->plt_wake_cfg->irq_bt);
1738 if (card->plt_wake_cfg->wake_by_bt)
1739 /* Undo our disable, since interrupt handler already
1740 * did this.
1741 */
1742 enable_irq(card->plt_wake_cfg->irq_bt);
1743 }
1744
1745 return 0;
1746}
1747
1748static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1749 .suspend = btmrvl_sdio_suspend,
1750 .resume = btmrvl_sdio_resume,
1751};
1752
1753static struct sdio_driver bt_mrvl_sdio = {
1754 .name = "btmrvl_sdio",
1755 .id_table = btmrvl_sdio_ids,
1756 .probe = btmrvl_sdio_probe,
1757 .remove = btmrvl_sdio_remove,
1758 .drv = {
1759 .owner = THIS_MODULE,
1760 .coredump = btmrvl_sdio_coredump,
1761 .pm = &btmrvl_sdio_pm_ops,
1762 }
1763};
1764
1765static int __init btmrvl_sdio_init_module(void)
1766{
1767 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1768 BT_ERR("SDIO Driver Registration Failed");
1769 return -ENODEV;
1770 }
1771
1772 /* Clear the flag in case user removes the card. */
1773 user_rmmod = 0;
1774
1775 return 0;
1776}
1777
1778static void __exit btmrvl_sdio_exit_module(void)
1779{
1780 /* Set the flag as user is removing this module. */
1781 user_rmmod = 1;
1782
1783 sdio_unregister_driver(&bt_mrvl_sdio);
1784}
1785
1786module_init(btmrvl_sdio_init_module);
1787module_exit(btmrvl_sdio_exit_module);
1788
1789MODULE_AUTHOR("Marvell International Ltd.");
1790MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1791MODULE_VERSION(VERSION);
1792MODULE_LICENSE("GPL v2");
1793MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1794MODULE_FIRMWARE("mrvl/sd8688.bin");
1795MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1796MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1797MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1798MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
1799MODULE_FIRMWARE("mrvl/sd8977_uapsta.bin");
1800MODULE_FIRMWARE("mrvl/sd8997_uapsta.bin");
1801