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Linux 5.9.7
[linux/fpc-iii.git] / drivers / bluetooth / btmrvl_sdio.c
blobd15fd5be0216b47099e02f2c256d076073bf6cce
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
38 static 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
56 static const struct of_device_id btmrvl_sdio_of_match_table[] = {
57 { .compatible = "marvell,sd8897-bt" },
58 { .compatible = "marvell,sd8997-bt" },
59 { }
60 };
61
62 static 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 */
83 static 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
115 /* Configure wakeup (enabled by default) */
116 device_init_wakeup(dev, true);
117 disable_irq(cfg->irq_bt);
118 }
119 }
120
121 return 0;
122 }
123
124 /* The btmrvl_sdio_remove() callback function is called
125 * when user removes this module from kernel space or ejects
126 * the card from the slot. The driver handles these 2 cases
127 * differently.
128 * If the user is removing the module, a MODULE_SHUTDOWN_REQ
129 * command is sent to firmware and interrupt will be disabled.
130 * If the card is removed, there is no need to send command
131 * or disable interrupt.
132 *
133 * The variable 'user_rmmod' is used to distinguish these two
134 * scenarios. This flag is initialized as FALSE in case the card
135 * is removed, and will be set to TRUE for module removal when
136 * module_exit function is called.
137 */
138 static u8 user_rmmod;
139 static u8 sdio_ireg;
140
141 static const struct btmrvl_sdio_card_reg btmrvl_reg_8688 = {
142 .cfg = 0x03,
143 .host_int_mask = 0x04,
144 .host_intstatus = 0x05,
145 .card_status = 0x20,
146 .sq_read_base_addr_a0 = 0x10,
147 .sq_read_base_addr_a1 = 0x11,
148 .card_fw_status0 = 0x40,
149 .card_fw_status1 = 0x41,
150 .card_rx_len = 0x42,
151 .card_rx_unit = 0x43,
152 .io_port_0 = 0x00,
153 .io_port_1 = 0x01,
154 .io_port_2 = 0x02,
155 .int_read_to_clear = false,
156 };
157 static const struct btmrvl_sdio_card_reg btmrvl_reg_87xx = {
158 .cfg = 0x00,
159 .host_int_mask = 0x02,
160 .host_intstatus = 0x03,
161 .card_status = 0x30,
162 .sq_read_base_addr_a0 = 0x40,
163 .sq_read_base_addr_a1 = 0x41,
164 .card_revision = 0x5c,
165 .card_fw_status0 = 0x60,
166 .card_fw_status1 = 0x61,
167 .card_rx_len = 0x62,
168 .card_rx_unit = 0x63,
169 .io_port_0 = 0x78,
170 .io_port_1 = 0x79,
171 .io_port_2 = 0x7a,
172 .int_read_to_clear = false,
173 };
174
175 static const struct btmrvl_sdio_card_reg btmrvl_reg_8887 = {
176 .cfg = 0x00,
177 .host_int_mask = 0x08,
178 .host_intstatus = 0x0C,
179 .card_status = 0x5C,
180 .sq_read_base_addr_a0 = 0x6C,
181 .sq_read_base_addr_a1 = 0x6D,
182 .card_revision = 0xC8,
183 .card_fw_status0 = 0x88,
184 .card_fw_status1 = 0x89,
185 .card_rx_len = 0x8A,
186 .card_rx_unit = 0x8B,
187 .io_port_0 = 0xE4,
188 .io_port_1 = 0xE5,
189 .io_port_2 = 0xE6,
190 .int_read_to_clear = true,
191 .host_int_rsr = 0x04,
192 .card_misc_cfg = 0xD8,
193 };
194
195 static const struct btmrvl_sdio_card_reg btmrvl_reg_8897 = {
196 .cfg = 0x00,
197 .host_int_mask = 0x02,
198 .host_intstatus = 0x03,
199 .card_status = 0x50,
200 .sq_read_base_addr_a0 = 0x60,
201 .sq_read_base_addr_a1 = 0x61,
202 .card_revision = 0xbc,
203 .card_fw_status0 = 0xc0,
204 .card_fw_status1 = 0xc1,
205 .card_rx_len = 0xc2,
206 .card_rx_unit = 0xc3,
207 .io_port_0 = 0xd8,
208 .io_port_1 = 0xd9,
209 .io_port_2 = 0xda,
210 .int_read_to_clear = true,
211 .host_int_rsr = 0x01,
212 .card_misc_cfg = 0xcc,
213 .fw_dump_ctrl = 0xe2,
214 .fw_dump_start = 0xe3,
215 .fw_dump_end = 0xea,
216 };
217
218 static const struct btmrvl_sdio_card_reg btmrvl_reg_8977 = {
219 .cfg = 0x00,
220 .host_int_mask = 0x08,
221 .host_intstatus = 0x0c,
222 .card_status = 0x5c,
223 .sq_read_base_addr_a0 = 0xf8,
224 .sq_read_base_addr_a1 = 0xf9,
225 .card_revision = 0xc8,
226 .card_fw_status0 = 0xe8,
227 .card_fw_status1 = 0xe9,
228 .card_rx_len = 0xea,
229 .card_rx_unit = 0xeb,
230 .io_port_0 = 0xe4,
231 .io_port_1 = 0xe5,
232 .io_port_2 = 0xe6,
233 .int_read_to_clear = true,
234 .host_int_rsr = 0x04,
235 .card_misc_cfg = 0xD8,
236 .fw_dump_ctrl = 0xf0,
237 .fw_dump_start = 0xf1,
238 .fw_dump_end = 0xf8,
239 };
240
241 static const struct btmrvl_sdio_card_reg btmrvl_reg_8987 = {
242 .cfg = 0x00,
243 .host_int_mask = 0x08,
244 .host_intstatus = 0x0c,
245 .card_status = 0x5c,
246 .sq_read_base_addr_a0 = 0xf8,
247 .sq_read_base_addr_a1 = 0xf9,
248 .card_revision = 0xc8,
249 .card_fw_status0 = 0xe8,
250 .card_fw_status1 = 0xe9,
251 .card_rx_len = 0xea,
252 .card_rx_unit = 0xeb,
253 .io_port_0 = 0xe4,
254 .io_port_1 = 0xe5,
255 .io_port_2 = 0xe6,
256 .int_read_to_clear = true,
257 .host_int_rsr = 0x04,
258 .card_misc_cfg = 0xd8,
259 .fw_dump_ctrl = 0xf0,
260 .fw_dump_start = 0xf1,
261 .fw_dump_end = 0xf8,
262 };
263
264 static const struct btmrvl_sdio_card_reg btmrvl_reg_8997 = {
265 .cfg = 0x00,
266 .host_int_mask = 0x08,
267 .host_intstatus = 0x0c,
268 .card_status = 0x5c,
269 .sq_read_base_addr_a0 = 0xf8,
270 .sq_read_base_addr_a1 = 0xf9,
271 .card_revision = 0xc8,
272 .card_fw_status0 = 0xe8,
273 .card_fw_status1 = 0xe9,
274 .card_rx_len = 0xea,
275 .card_rx_unit = 0xeb,
276 .io_port_0 = 0xe4,
277 .io_port_1 = 0xe5,
278 .io_port_2 = 0xe6,
279 .int_read_to_clear = true,
280 .host_int_rsr = 0x04,
281 .card_misc_cfg = 0xD8,
282 .fw_dump_ctrl = 0xf0,
283 .fw_dump_start = 0xf1,
284 .fw_dump_end = 0xf8,
285 };
286
287 static const struct btmrvl_sdio_device btmrvl_sdio_sd8688 = {
288 .helper = "mrvl/sd8688_helper.bin",
289 .firmware = "mrvl/sd8688.bin",
290 .reg = &btmrvl_reg_8688,
291 .support_pscan_win_report = false,
292 .sd_blksz_fw_dl = 64,
293 .supports_fw_dump = false,
294 };
295
296 static const struct btmrvl_sdio_device btmrvl_sdio_sd8787 = {
297 .helper = NULL,
298 .firmware = "mrvl/sd8787_uapsta.bin",
299 .reg = &btmrvl_reg_87xx,
300 .support_pscan_win_report = false,
301 .sd_blksz_fw_dl = 256,
302 .supports_fw_dump = false,
303 };
304
305 static const struct btmrvl_sdio_device btmrvl_sdio_sd8797 = {
306 .helper = NULL,
307 .firmware = "mrvl/sd8797_uapsta.bin",
308 .reg = &btmrvl_reg_87xx,
309 .support_pscan_win_report = false,
310 .sd_blksz_fw_dl = 256,
311 .supports_fw_dump = false,
312 };
313
314 static const struct btmrvl_sdio_device btmrvl_sdio_sd8887 = {
315 .helper = NULL,
316 .firmware = "mrvl/sd8887_uapsta.bin",
317 .reg = &btmrvl_reg_8887,
318 .support_pscan_win_report = true,
319 .sd_blksz_fw_dl = 256,
320 .supports_fw_dump = false,
321 };
322
323 static const struct btmrvl_sdio_device btmrvl_sdio_sd8897 = {
324 .helper = NULL,
325 .firmware = "mrvl/sd8897_uapsta.bin",
326 .reg = &btmrvl_reg_8897,
327 .support_pscan_win_report = true,
328 .sd_blksz_fw_dl = 256,
329 .supports_fw_dump = true,
330 };
331
332 static const struct btmrvl_sdio_device btmrvl_sdio_sd8977 = {
333 .helper = NULL,
334 .firmware = "mrvl/sdsd8977_combo_v2.bin",
335 .reg = &btmrvl_reg_8977,
336 .support_pscan_win_report = true,
337 .sd_blksz_fw_dl = 256,
338 .supports_fw_dump = true,
339 };
340
341 static const struct btmrvl_sdio_device btmrvl_sdio_sd8987 = {
342 .helper = NULL,
343 .firmware = "mrvl/sd8987_uapsta.bin",
344 .reg = &btmrvl_reg_8987,
345 .support_pscan_win_report = true,
346 .sd_blksz_fw_dl = 256,
347 .supports_fw_dump = true,
348 };
349
350 static const struct btmrvl_sdio_device btmrvl_sdio_sd8997 = {
351 .helper = NULL,
352 .firmware = "mrvl/sdsd8997_combo_v4.bin",
353 .reg = &btmrvl_reg_8997,
354 .support_pscan_win_report = true,
355 .sd_blksz_fw_dl = 256,
356 .supports_fw_dump = true,
357 };
358
359 static const struct sdio_device_id btmrvl_sdio_ids[] = {
360 /* Marvell SD8688 Bluetooth device */
361 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8688_BT),
362 .driver_data = (unsigned long)&btmrvl_sdio_sd8688 },
363 /* Marvell SD8787 Bluetooth device */
364 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787_BT),
365 .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
366 /* Marvell SD8787 Bluetooth AMP device */
367 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8787_BT_AMP),
368 .driver_data = (unsigned long)&btmrvl_sdio_sd8787 },
369 /* Marvell SD8797 Bluetooth device */
370 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8797_BT),
371 .driver_data = (unsigned long)&btmrvl_sdio_sd8797 },
372 /* Marvell SD8887 Bluetooth device */
373 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8887_BT),
374 .driver_data = (unsigned long)&btmrvl_sdio_sd8887 },
375 /* Marvell SD8897 Bluetooth device */
376 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8897_BT),
377 .driver_data = (unsigned long)&btmrvl_sdio_sd8897 },
378 /* Marvell SD8977 Bluetooth device */
379 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8977_BT),
380 .driver_data = (unsigned long)&btmrvl_sdio_sd8977 },
381 /* Marvell SD8987 Bluetooth device */
382 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8987_BT),
383 .driver_data = (unsigned long)&btmrvl_sdio_sd8987 },
384 /* Marvell SD8997 Bluetooth device */
385 { SDIO_DEVICE(SDIO_VENDOR_ID_MARVELL, SDIO_DEVICE_ID_MARVELL_8997_BT),
386 .driver_data = (unsigned long)&btmrvl_sdio_sd8997 },
387
388 { } /* Terminating entry */
389 };
390
391 MODULE_DEVICE_TABLE(sdio, btmrvl_sdio_ids);
392
393 static int btmrvl_sdio_get_rx_unit(struct btmrvl_sdio_card *card)
394 {
395 u8 reg;
396 int ret;
397
398 reg = sdio_readb(card->func, card->reg->card_rx_unit, &ret);
399 if (!ret)
400 card->rx_unit = reg;
401
402 return ret;
403 }
404
405 static int btmrvl_sdio_read_fw_status(struct btmrvl_sdio_card *card, u16 *dat)
406 {
407 u8 fws0, fws1;
408 int ret;
409
410 *dat = 0;
411
412 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
413 if (ret)
414 return -EIO;
415
416 fws1 = sdio_readb(card->func, card->reg->card_fw_status1, &ret);
417 if (ret)
418 return -EIO;
419
420 *dat = (((u16) fws1) << 8) | fws0;
421
422 return 0;
423 }
424
425 static int btmrvl_sdio_read_rx_len(struct btmrvl_sdio_card *card, u16 *dat)
426 {
427 u8 reg;
428 int ret;
429
430 reg = sdio_readb(card->func, card->reg->card_rx_len, &ret);
431 if (!ret)
432 *dat = (u16) reg << card->rx_unit;
433
434 return ret;
435 }
436
437 static int btmrvl_sdio_enable_host_int_mask(struct btmrvl_sdio_card *card,
438 u8 mask)
439 {
440 int ret;
441
442 sdio_writeb(card->func, mask, card->reg->host_int_mask, &ret);
443 if (ret) {
444 BT_ERR("Unable to enable the host interrupt!");
445 ret = -EIO;
446 }
447
448 return ret;
449 }
450
451 static int btmrvl_sdio_disable_host_int_mask(struct btmrvl_sdio_card *card,
452 u8 mask)
453 {
454 u8 host_int_mask;
455 int ret;
456
457 host_int_mask = sdio_readb(card->func, card->reg->host_int_mask, &ret);
458 if (ret)
459 return -EIO;
460
461 host_int_mask &= ~mask;
462
463 sdio_writeb(card->func, host_int_mask, card->reg->host_int_mask, &ret);
464 if (ret < 0) {
465 BT_ERR("Unable to disable the host interrupt!");
466 return -EIO;
467 }
468
469 return 0;
470 }
471
472 static int btmrvl_sdio_poll_card_status(struct btmrvl_sdio_card *card, u8 bits)
473 {
474 unsigned int tries;
475 u8 status;
476 int ret;
477
478 for (tries = 0; tries < MAX_POLL_TRIES * 1000; tries++) {
479 status = sdio_readb(card->func, card->reg->card_status, &ret);
480 if (ret)
481 goto failed;
482 if ((status & bits) == bits)
483 return ret;
484
485 udelay(1);
486 }
487
488 ret = -ETIMEDOUT;
489
490 failed:
491 BT_ERR("FAILED! ret=%d", ret);
492
493 return ret;
494 }
495
496 static int btmrvl_sdio_verify_fw_download(struct btmrvl_sdio_card *card,
497 int pollnum)
498 {
499 u16 firmwarestat;
500 int tries, ret;
501
502 /* Wait for firmware to become ready */
503 for (tries = 0; tries < pollnum; tries++) {
504 sdio_claim_host(card->func);
505 ret = btmrvl_sdio_read_fw_status(card, &firmwarestat);
506 sdio_release_host(card->func);
507 if (ret < 0)
508 continue;
509
510 if (firmwarestat == FIRMWARE_READY)
511 return 0;
512
513 msleep(100);
514 }
515
516 return -ETIMEDOUT;
517 }
518
519 static int btmrvl_sdio_download_helper(struct btmrvl_sdio_card *card)
520 {
521 const struct firmware *fw_helper = NULL;
522 const u8 *helper = NULL;
523 int ret;
524 void *tmphlprbuf = NULL;
525 int tmphlprbufsz, hlprblknow, helperlen;
526 u8 *helperbuf;
527 u32 tx_len;
528
529 ret = request_firmware(&fw_helper, card->helper,
530 &card->func->dev);
531 if ((ret < 0) || !fw_helper) {
532 BT_ERR("request_firmware(helper) failed, error code = %d",
533 ret);
534 ret = -ENOENT;
535 goto done;
536 }
537
538 helper = fw_helper->data;
539 helperlen = fw_helper->size;
540
541 BT_DBG("Downloading helper image (%d bytes), block size %d bytes",
542 helperlen, SDIO_BLOCK_SIZE);
543
544 tmphlprbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
545
546 tmphlprbuf = kzalloc(tmphlprbufsz, GFP_KERNEL);
547 if (!tmphlprbuf) {
548 BT_ERR("Unable to allocate buffer for helper."
549 " Terminating download");
550 ret = -ENOMEM;
551 goto done;
552 }
553
554 helperbuf = (u8 *) ALIGN_ADDR(tmphlprbuf, BTSDIO_DMA_ALIGN);
555
556 /* Perform helper data transfer */
557 tx_len = (FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE)
558 - SDIO_HEADER_LEN;
559 hlprblknow = 0;
560
561 do {
562 ret = btmrvl_sdio_poll_card_status(card,
563 CARD_IO_READY | DN_LD_CARD_RDY);
564 if (ret < 0) {
565 BT_ERR("Helper download poll status timeout @ %d",
566 hlprblknow);
567 goto done;
568 }
569
570 /* Check if there is more data? */
571 if (hlprblknow >= helperlen)
572 break;
573
574 if (helperlen - hlprblknow < tx_len)
575 tx_len = helperlen - hlprblknow;
576
577 /* Little-endian */
578 helperbuf[0] = ((tx_len & 0x000000ff) >> 0);
579 helperbuf[1] = ((tx_len & 0x0000ff00) >> 8);
580 helperbuf[2] = ((tx_len & 0x00ff0000) >> 16);
581 helperbuf[3] = ((tx_len & 0xff000000) >> 24);
582
583 memcpy(&helperbuf[SDIO_HEADER_LEN], &helper[hlprblknow],
584 tx_len);
585
586 /* Now send the data */
587 ret = sdio_writesb(card->func, card->ioport, helperbuf,
588 FIRMWARE_TRANSFER_NBLOCK * SDIO_BLOCK_SIZE);
589 if (ret < 0) {
590 BT_ERR("IO error during helper download @ %d",
591 hlprblknow);
592 goto done;
593 }
594
595 hlprblknow += tx_len;
596 } while (true);
597
598 BT_DBG("Transferring helper image EOF block");
599
600 memset(helperbuf, 0x0, SDIO_BLOCK_SIZE);
601
602 ret = sdio_writesb(card->func, card->ioport, helperbuf,
603 SDIO_BLOCK_SIZE);
604 if (ret < 0) {
605 BT_ERR("IO error in writing helper image EOF block");
606 goto done;
607 }
608
609 ret = 0;
610
611 done:
612 kfree(tmphlprbuf);
613 release_firmware(fw_helper);
614 return ret;
615 }
616
617 static int btmrvl_sdio_download_fw_w_helper(struct btmrvl_sdio_card *card)
618 {
619 const struct firmware *fw_firmware = NULL;
620 const u8 *firmware = NULL;
621 int firmwarelen, tmpfwbufsz, ret;
622 unsigned int tries, offset;
623 u8 base0, base1;
624 void *tmpfwbuf = NULL;
625 u8 *fwbuf;
626 u16 len, blksz_dl = card->sd_blksz_fw_dl;
627 int txlen = 0, tx_blocks = 0, count = 0;
628
629 ret = request_firmware(&fw_firmware, card->firmware,
630 &card->func->dev);
631 if ((ret < 0) || !fw_firmware) {
632 BT_ERR("request_firmware(firmware) failed, error code = %d",
633 ret);
634 ret = -ENOENT;
635 goto done;
636 }
637
638 firmware = fw_firmware->data;
639 firmwarelen = fw_firmware->size;
640
641 BT_DBG("Downloading FW image (%d bytes)", firmwarelen);
642
643 tmpfwbufsz = ALIGN_SZ(BTM_UPLD_SIZE, BTSDIO_DMA_ALIGN);
644 tmpfwbuf = kzalloc(tmpfwbufsz, GFP_KERNEL);
645 if (!tmpfwbuf) {
646 BT_ERR("Unable to allocate buffer for firmware."
647 " Terminating download");
648 ret = -ENOMEM;
649 goto done;
650 }
651
652 /* Ensure aligned firmware buffer */
653 fwbuf = (u8 *) ALIGN_ADDR(tmpfwbuf, BTSDIO_DMA_ALIGN);
654
655 /* Perform firmware data transfer */
656 offset = 0;
657 do {
658 ret = btmrvl_sdio_poll_card_status(card,
659 CARD_IO_READY | DN_LD_CARD_RDY);
660 if (ret < 0) {
661 BT_ERR("FW download with helper poll status"
662 " timeout @ %d", offset);
663 goto done;
664 }
665
666 /* Check if there is more data ? */
667 if (offset >= firmwarelen)
668 break;
669
670 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
671 base0 = sdio_readb(card->func,
672 card->reg->sq_read_base_addr_a0, &ret);
673 if (ret) {
674 BT_ERR("BASE0 register read failed:"
675 " base0 = 0x%04X(%d)."
676 " Terminating download",
677 base0, base0);
678 ret = -EIO;
679 goto done;
680 }
681 base1 = sdio_readb(card->func,
682 card->reg->sq_read_base_addr_a1, &ret);
683 if (ret) {
684 BT_ERR("BASE1 register read failed:"
685 " base1 = 0x%04X(%d)."
686 " Terminating download",
687 base1, base1);
688 ret = -EIO;
689 goto done;
690 }
691
692 len = (((u16) base1) << 8) | base0;
693 if (len)
694 break;
695
696 udelay(10);
697 }
698
699 if (!len)
700 break;
701 else if (len > BTM_UPLD_SIZE) {
702 BT_ERR("FW download failure @%d, invalid length %d",
703 offset, len);
704 ret = -EINVAL;
705 goto done;
706 }
707
708 txlen = len;
709
710 if (len & BIT(0)) {
711 count++;
712 if (count > MAX_WRITE_IOMEM_RETRY) {
713 BT_ERR("FW download failure @%d, "
714 "over max retry count", offset);
715 ret = -EIO;
716 goto done;
717 }
718 BT_ERR("FW CRC error indicated by the helper: "
719 "len = 0x%04X, txlen = %d", len, txlen);
720 len &= ~BIT(0);
721 /* Set txlen to 0 so as to resend from same offset */
722 txlen = 0;
723 } else {
724 count = 0;
725
726 /* Last block ? */
727 if (firmwarelen - offset < txlen)
728 txlen = firmwarelen - offset;
729
730 tx_blocks = DIV_ROUND_UP(txlen, blksz_dl);
731
732 memcpy(fwbuf, &firmware[offset], txlen);
733 }
734
735 ret = sdio_writesb(card->func, card->ioport, fwbuf,
736 tx_blocks * blksz_dl);
737
738 if (ret < 0) {
739 BT_ERR("FW download, writesb(%d) failed @%d",
740 count, offset);
741 sdio_writeb(card->func, HOST_CMD53_FIN,
742 card->reg->cfg, &ret);
743 if (ret)
744 BT_ERR("writeb failed (CFG)");
745 }
746
747 offset += txlen;
748 } while (true);
749
750 BT_INFO("FW download over, size %d bytes", offset);
751
752 ret = 0;
753
754 done:
755 kfree(tmpfwbuf);
756 release_firmware(fw_firmware);
757 return ret;
758 }
759
760 static int btmrvl_sdio_card_to_host(struct btmrvl_private *priv)
761 {
762 u16 buf_len = 0;
763 int ret, num_blocks, blksz;
764 struct sk_buff *skb = NULL;
765 u32 type;
766 u8 *payload;
767 struct hci_dev *hdev = priv->btmrvl_dev.hcidev;
768 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
769
770 if (!card || !card->func) {
771 BT_ERR("card or function is NULL!");
772 ret = -EINVAL;
773 goto exit;
774 }
775
776 /* Read the length of data to be transferred */
777 ret = btmrvl_sdio_read_rx_len(card, &buf_len);
778 if (ret < 0) {
779 BT_ERR("read rx_len failed");
780 ret = -EIO;
781 goto exit;
782 }
783
784 blksz = SDIO_BLOCK_SIZE;
785 num_blocks = DIV_ROUND_UP(buf_len, blksz);
786
787 if (buf_len <= SDIO_HEADER_LEN
788 || (num_blocks * blksz) > ALLOC_BUF_SIZE) {
789 BT_ERR("invalid packet length: %d", buf_len);
790 ret = -EINVAL;
791 goto exit;
792 }
793
794 /* Allocate buffer */
795 skb = bt_skb_alloc(num_blocks * blksz + BTSDIO_DMA_ALIGN, GFP_KERNEL);
796 if (!skb) {
797 BT_ERR("No free skb");
798 ret = -ENOMEM;
799 goto exit;
800 }
801
802 if ((unsigned long) skb->data & (BTSDIO_DMA_ALIGN - 1)) {
803 skb_put(skb, (unsigned long) skb->data &
804 (BTSDIO_DMA_ALIGN - 1));
805 skb_pull(skb, (unsigned long) skb->data &
806 (BTSDIO_DMA_ALIGN - 1));
807 }
808
809 payload = skb->data;
810
811 ret = sdio_readsb(card->func, payload, card->ioport,
812 num_blocks * blksz);
813 if (ret < 0) {
814 BT_ERR("readsb failed: %d", ret);
815 ret = -EIO;
816 goto exit;
817 }
818
819 /* This is SDIO specific header length: byte[2][1][0], type: byte[3]
820 * (HCI_COMMAND = 1, ACL_DATA = 2, SCO_DATA = 3, 0xFE = Vendor)
821 */
822
823 buf_len = payload[0];
824 buf_len |= payload[1] << 8;
825 buf_len |= payload[2] << 16;
826
827 if (buf_len > blksz * num_blocks) {
828 BT_ERR("Skip incorrect packet: hdrlen %d buffer %d",
829 buf_len, blksz * num_blocks);
830 ret = -EIO;
831 goto exit;
832 }
833
834 type = payload[3];
835
836 switch (type) {
837 case HCI_ACLDATA_PKT:
838 case HCI_SCODATA_PKT:
839 case HCI_EVENT_PKT:
840 hci_skb_pkt_type(skb) = type;
841 skb_put(skb, buf_len);
842 skb_pull(skb, SDIO_HEADER_LEN);
843
844 if (type == HCI_EVENT_PKT) {
845 if (btmrvl_check_evtpkt(priv, skb))
846 hci_recv_frame(hdev, skb);
847 } else {
848 hci_recv_frame(hdev, skb);
849 }
850
851 hdev->stat.byte_rx += buf_len;
852 break;
853
854 case MRVL_VENDOR_PKT:
855 hci_skb_pkt_type(skb) = HCI_VENDOR_PKT;
856 skb_put(skb, buf_len);
857 skb_pull(skb, SDIO_HEADER_LEN);
858
859 if (btmrvl_process_event(priv, skb))
860 hci_recv_frame(hdev, skb);
861
862 hdev->stat.byte_rx += buf_len;
863 break;
864
865 default:
866 BT_ERR("Unknown packet type:%d", type);
867 BT_ERR("hex: %*ph", blksz * num_blocks, payload);
868
869 kfree_skb(skb);
870 skb = NULL;
871 break;
872 }
873
874 exit:
875 if (ret) {
876 hdev->stat.err_rx++;
877 kfree_skb(skb);
878 }
879
880 return ret;
881 }
882
883 static int btmrvl_sdio_process_int_status(struct btmrvl_private *priv)
884 {
885 ulong flags;
886 u8 ireg;
887 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
888
889 spin_lock_irqsave(&priv->driver_lock, flags);
890 ireg = sdio_ireg;
891 sdio_ireg = 0;
892 spin_unlock_irqrestore(&priv->driver_lock, flags);
893
894 sdio_claim_host(card->func);
895 if (ireg & DN_LD_HOST_INT_STATUS) {
896 if (priv->btmrvl_dev.tx_dnld_rdy)
897 BT_DBG("tx_done already received: "
898 " int_status=0x%x", ireg);
899 else
900 priv->btmrvl_dev.tx_dnld_rdy = true;
901 }
902
903 if (ireg & UP_LD_HOST_INT_STATUS)
904 btmrvl_sdio_card_to_host(priv);
905
906 sdio_release_host(card->func);
907
908 return 0;
909 }
910
911 static int btmrvl_sdio_read_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
912 {
913 struct btmrvl_adapter *adapter = card->priv->adapter;
914 int ret;
915
916 ret = sdio_readsb(card->func, adapter->hw_regs, 0, SDIO_BLOCK_SIZE);
917 if (ret) {
918 BT_ERR("sdio_readsb: read int hw_regs failed: %d", ret);
919 return ret;
920 }
921
922 *ireg = adapter->hw_regs[card->reg->host_intstatus];
923 BT_DBG("hw_regs[%#x]=%#x", card->reg->host_intstatus, *ireg);
924
925 return 0;
926 }
927
928 static int btmrvl_sdio_write_to_clear(struct btmrvl_sdio_card *card, u8 *ireg)
929 {
930 int ret;
931
932 *ireg = sdio_readb(card->func, card->reg->host_intstatus, &ret);
933 if (ret) {
934 BT_ERR("sdio_readb: read int status failed: %d", ret);
935 return ret;
936 }
937
938 if (*ireg) {
939 /*
940 * DN_LD_HOST_INT_STATUS and/or UP_LD_HOST_INT_STATUS
941 * Clear the interrupt status register and re-enable the
942 * interrupt.
943 */
944 BT_DBG("int_status = 0x%x", *ireg);
945
946 sdio_writeb(card->func, ~(*ireg) & (DN_LD_HOST_INT_STATUS |
947 UP_LD_HOST_INT_STATUS),
948 card->reg->host_intstatus, &ret);
949 if (ret) {
950 BT_ERR("sdio_writeb: clear int status failed: %d", ret);
951 return ret;
952 }
953 }
954
955 return 0;
956 }
957
958 static void btmrvl_sdio_interrupt(struct sdio_func *func)
959 {
960 struct btmrvl_private *priv;
961 struct btmrvl_sdio_card *card;
962 ulong flags;
963 u8 ireg = 0;
964 int ret;
965
966 card = sdio_get_drvdata(func);
967 if (!card || !card->priv) {
968 BT_ERR("sbi_interrupt(%p) card or priv is NULL, card=%p",
969 func, card);
970 return;
971 }
972
973 priv = card->priv;
974
975 if (priv->surprise_removed)
976 return;
977
978 if (card->reg->int_read_to_clear)
979 ret = btmrvl_sdio_read_to_clear(card, &ireg);
980 else
981 ret = btmrvl_sdio_write_to_clear(card, &ireg);
982
983 if (ret)
984 return;
985
986 spin_lock_irqsave(&priv->driver_lock, flags);
987 sdio_ireg |= ireg;
988 spin_unlock_irqrestore(&priv->driver_lock, flags);
989
990 btmrvl_interrupt(priv);
991 }
992
993 static int btmrvl_sdio_register_dev(struct btmrvl_sdio_card *card)
994 {
995 struct sdio_func *func;
996 u8 reg;
997 int ret;
998
999 if (!card || !card->func) {
1000 BT_ERR("Error: card or function is NULL!");
1001 ret = -EINVAL;
1002 goto failed;
1003 }
1004
1005 func = card->func;
1006
1007 sdio_claim_host(func);
1008
1009 ret = sdio_enable_func(func);
1010 if (ret) {
1011 BT_ERR("sdio_enable_func() failed: ret=%d", ret);
1012 ret = -EIO;
1013 goto release_host;
1014 }
1015
1016 ret = sdio_claim_irq(func, btmrvl_sdio_interrupt);
1017 if (ret) {
1018 BT_ERR("sdio_claim_irq failed: ret=%d", ret);
1019 ret = -EIO;
1020 goto disable_func;
1021 }
1022
1023 ret = sdio_set_block_size(card->func, SDIO_BLOCK_SIZE);
1024 if (ret) {
1025 BT_ERR("cannot set SDIO block size");
1026 ret = -EIO;
1027 goto release_irq;
1028 }
1029
1030 reg = sdio_readb(func, card->reg->io_port_0, &ret);
1031 if (ret < 0) {
1032 ret = -EIO;
1033 goto release_irq;
1034 }
1035
1036 card->ioport = reg;
1037
1038 reg = sdio_readb(func, card->reg->io_port_1, &ret);
1039 if (ret < 0) {
1040 ret = -EIO;
1041 goto release_irq;
1042 }
1043
1044 card->ioport |= (reg << 8);
1045
1046 reg = sdio_readb(func, card->reg->io_port_2, &ret);
1047 if (ret < 0) {
1048 ret = -EIO;
1049 goto release_irq;
1050 }
1051
1052 card->ioport |= (reg << 16);
1053
1054 BT_DBG("SDIO FUNC%d IO port: 0x%x", func->num, card->ioport);
1055
1056 if (card->reg->int_read_to_clear) {
1057 reg = sdio_readb(func, card->reg->host_int_rsr, &ret);
1058 if (ret < 0) {
1059 ret = -EIO;
1060 goto release_irq;
1061 }
1062 sdio_writeb(func, reg | 0x3f, card->reg->host_int_rsr, &ret);
1063 if (ret < 0) {
1064 ret = -EIO;
1065 goto release_irq;
1066 }
1067
1068 reg = sdio_readb(func, card->reg->card_misc_cfg, &ret);
1069 if (ret < 0) {
1070 ret = -EIO;
1071 goto release_irq;
1072 }
1073 sdio_writeb(func, reg | 0x10, card->reg->card_misc_cfg, &ret);
1074 if (ret < 0) {
1075 ret = -EIO;
1076 goto release_irq;
1077 }
1078 }
1079
1080 sdio_set_drvdata(func, card);
1081
1082 sdio_release_host(func);
1083
1084 return 0;
1085
1086 release_irq:
1087 sdio_release_irq(func);
1088
1089 disable_func:
1090 sdio_disable_func(func);
1091
1092 release_host:
1093 sdio_release_host(func);
1094
1095 failed:
1096 return ret;
1097 }
1098
1099 static int btmrvl_sdio_unregister_dev(struct btmrvl_sdio_card *card)
1100 {
1101 if (card && card->func) {
1102 sdio_claim_host(card->func);
1103 sdio_release_irq(card->func);
1104 sdio_disable_func(card->func);
1105 sdio_release_host(card->func);
1106 sdio_set_drvdata(card->func, NULL);
1107 }
1108
1109 return 0;
1110 }
1111
1112 static int btmrvl_sdio_enable_host_int(struct btmrvl_sdio_card *card)
1113 {
1114 int ret;
1115
1116 if (!card || !card->func)
1117 return -EINVAL;
1118
1119 sdio_claim_host(card->func);
1120
1121 ret = btmrvl_sdio_enable_host_int_mask(card, HIM_ENABLE);
1122
1123 btmrvl_sdio_get_rx_unit(card);
1124
1125 sdio_release_host(card->func);
1126
1127 return ret;
1128 }
1129
1130 static int btmrvl_sdio_disable_host_int(struct btmrvl_sdio_card *card)
1131 {
1132 int ret;
1133
1134 if (!card || !card->func)
1135 return -EINVAL;
1136
1137 sdio_claim_host(card->func);
1138
1139 ret = btmrvl_sdio_disable_host_int_mask(card, HIM_DISABLE);
1140
1141 sdio_release_host(card->func);
1142
1143 return ret;
1144 }
1145
1146 static int btmrvl_sdio_host_to_card(struct btmrvl_private *priv,
1147 u8 *payload, u16 nb)
1148 {
1149 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1150 int ret = 0;
1151 int blksz;
1152 int i = 0;
1153 u8 *buf = NULL;
1154 void *tmpbuf = NULL;
1155 int tmpbufsz;
1156
1157 if (!card || !card->func) {
1158 BT_ERR("card or function is NULL!");
1159 return -EINVAL;
1160 }
1161
1162 blksz = DIV_ROUND_UP(nb, SDIO_BLOCK_SIZE) * SDIO_BLOCK_SIZE;
1163
1164 buf = payload;
1165 if ((unsigned long) payload & (BTSDIO_DMA_ALIGN - 1) ||
1166 nb < blksz) {
1167 tmpbufsz = ALIGN_SZ(blksz, BTSDIO_DMA_ALIGN) +
1168 BTSDIO_DMA_ALIGN;
1169 tmpbuf = kzalloc(tmpbufsz, GFP_KERNEL);
1170 if (!tmpbuf)
1171 return -ENOMEM;
1172 buf = (u8 *) ALIGN_ADDR(tmpbuf, BTSDIO_DMA_ALIGN);
1173 memcpy(buf, payload, nb);
1174 }
1175
1176 sdio_claim_host(card->func);
1177
1178 do {
1179 /* Transfer data to card */
1180 ret = sdio_writesb(card->func, card->ioport, buf,
1181 blksz);
1182 if (ret < 0) {
1183 i++;
1184 BT_ERR("i=%d writesb failed: %d", i, ret);
1185 BT_ERR("hex: %*ph", nb, payload);
1186 ret = -EIO;
1187 if (i > MAX_WRITE_IOMEM_RETRY)
1188 goto exit;
1189 }
1190 } while (ret);
1191
1192 priv->btmrvl_dev.tx_dnld_rdy = false;
1193
1194 exit:
1195 sdio_release_host(card->func);
1196 kfree(tmpbuf);
1197
1198 return ret;
1199 }
1200
1201 static int btmrvl_sdio_download_fw(struct btmrvl_sdio_card *card)
1202 {
1203 int ret;
1204 u8 fws0;
1205 int pollnum = MAX_POLL_TRIES;
1206
1207 if (!card || !card->func) {
1208 BT_ERR("card or function is NULL!");
1209 return -EINVAL;
1210 }
1211
1212 if (!btmrvl_sdio_verify_fw_download(card, 1)) {
1213 BT_DBG("Firmware already downloaded!");
1214 return 0;
1215 }
1216
1217 sdio_claim_host(card->func);
1218
1219 /* Check if other function driver is downloading the firmware */
1220 fws0 = sdio_readb(card->func, card->reg->card_fw_status0, &ret);
1221 if (ret) {
1222 BT_ERR("Failed to read FW downloading status!");
1223 ret = -EIO;
1224 goto done;
1225 }
1226 if (fws0) {
1227 BT_DBG("BT not the winner (%#x). Skip FW downloading", fws0);
1228
1229 /* Give other function more time to download the firmware */
1230 pollnum *= 10;
1231 } else {
1232 if (card->helper) {
1233 ret = btmrvl_sdio_download_helper(card);
1234 if (ret) {
1235 BT_ERR("Failed to download helper!");
1236 ret = -EIO;
1237 goto done;
1238 }
1239 }
1240
1241 if (btmrvl_sdio_download_fw_w_helper(card)) {
1242 BT_ERR("Failed to download firmware!");
1243 ret = -EIO;
1244 goto done;
1245 }
1246 }
1247
1248 /*
1249 * winner or not, with this test the FW synchronizes when the
1250 * module can continue its initialization
1251 */
1252 if (btmrvl_sdio_verify_fw_download(card, pollnum)) {
1253 BT_ERR("FW failed to be active in time!");
1254 ret = -ETIMEDOUT;
1255 goto done;
1256 }
1257
1258 sdio_release_host(card->func);
1259
1260 return 0;
1261
1262 done:
1263 sdio_release_host(card->func);
1264 return ret;
1265 }
1266
1267 static int btmrvl_sdio_wakeup_fw(struct btmrvl_private *priv)
1268 {
1269 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1270 int ret = 0;
1271
1272 if (!card || !card->func) {
1273 BT_ERR("card or function is NULL!");
1274 return -EINVAL;
1275 }
1276
1277 sdio_claim_host(card->func);
1278
1279 sdio_writeb(card->func, HOST_POWER_UP, card->reg->cfg, &ret);
1280
1281 sdio_release_host(card->func);
1282
1283 BT_DBG("wake up firmware");
1284
1285 return ret;
1286 }
1287
1288 static void btmrvl_sdio_dump_regs(struct btmrvl_private *priv)
1289 {
1290 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1291 int ret = 0;
1292 unsigned int reg, reg_start, reg_end;
1293 char buf[256], *ptr;
1294 u8 loop, func, data;
1295 int MAX_LOOP = 2;
1296
1297 btmrvl_sdio_wakeup_fw(priv);
1298 sdio_claim_host(card->func);
1299
1300 for (loop = 0; loop < MAX_LOOP; loop++) {
1301 memset(buf, 0, sizeof(buf));
1302 ptr = buf;
1303
1304 if (loop == 0) {
1305 /* Read the registers of SDIO function0 */
1306 func = loop;
1307 reg_start = 0;
1308 reg_end = 9;
1309 } else {
1310 func = 2;
1311 reg_start = 0;
1312 reg_end = 0x09;
1313 }
1314
1315 ptr += sprintf(ptr, "SDIO Func%d (%#x-%#x): ",
1316 func, reg_start, reg_end);
1317 for (reg = reg_start; reg <= reg_end; reg++) {
1318 if (func == 0)
1319 data = sdio_f0_readb(card->func, reg, &ret);
1320 else
1321 data = sdio_readb(card->func, reg, &ret);
1322
1323 if (!ret) {
1324 ptr += sprintf(ptr, "%02x ", data);
1325 } else {
1326 ptr += sprintf(ptr, "ERR");
1327 break;
1328 }
1329 }
1330
1331 BT_INFO("%s", buf);
1332 }
1333
1334 sdio_release_host(card->func);
1335 }
1336
1337 /* This function read/write firmware */
1338 static enum
1339 rdwr_status btmrvl_sdio_rdwr_firmware(struct btmrvl_private *priv,
1340 u8 doneflag)
1341 {
1342 struct btmrvl_sdio_card *card = priv->btmrvl_dev.card;
1343 int ret, tries;
1344 u8 ctrl_data = 0;
1345
1346 sdio_writeb(card->func, FW_DUMP_HOST_READY, card->reg->fw_dump_ctrl,
1347 &ret);
1348
1349 if (ret) {
1350 BT_ERR("SDIO write err");
1351 return RDWR_STATUS_FAILURE;
1352 }
1353
1354 for (tries = 0; tries < MAX_POLL_TRIES; tries++) {
1355 ctrl_data = sdio_readb(card->func, card->reg->fw_dump_ctrl,
1356 &ret);
1357
1358 if (ret) {
1359 BT_ERR("SDIO read err");
1360 return RDWR_STATUS_FAILURE;
1361 }
1362
1363 if (ctrl_data == FW_DUMP_DONE)
1364 break;
1365 if (doneflag && ctrl_data == doneflag)
1366 return RDWR_STATUS_DONE;
1367 if (ctrl_data != FW_DUMP_HOST_READY) {
1368 BT_INFO("The ctrl reg was changed, re-try again!");
1369 sdio_writeb(card->func, FW_DUMP_HOST_READY,
1370 card->reg->fw_dump_ctrl, &ret);
1371 if (ret) {
1372 BT_ERR("SDIO write err");
1373 return RDWR_STATUS_FAILURE;
1374 }
1375 }
1376 usleep_range(100, 200);
1377 }
1378
1379 if (ctrl_data == FW_DUMP_HOST_READY) {
1380 BT_ERR("Fail to pull ctrl_data");
1381 return RDWR_STATUS_FAILURE;
1382 }
1383
1384 return RDWR_STATUS_SUCCESS;
1385 }
1386
1387 /* This function dump sdio register and memory data */
1388 static void btmrvl_sdio_coredump(struct device *dev)
1389 {
1390 struct sdio_func *func = dev_to_sdio_func(dev);
1391 struct btmrvl_sdio_card *card;
1392 struct btmrvl_private *priv;
1393 int ret = 0;
1394 unsigned int reg, reg_start, reg_end;
1395 enum rdwr_status stat;
1396 u8 *dbg_ptr, *end_ptr, *fw_dump_data, *fw_dump_ptr;
1397 u8 dump_num = 0, idx, i, read_reg, doneflag = 0;
1398 u32 memory_size, fw_dump_len = 0;
1399
1400 card = sdio_get_drvdata(func);
1401 priv = card->priv;
1402
1403 /* dump sdio register first */
1404 btmrvl_sdio_dump_regs(priv);
1405
1406 if (!card->supports_fw_dump) {
1407 BT_ERR("Firmware dump not supported for this card!");
1408 return;
1409 }
1410
1411 for (idx = 0; idx < ARRAY_SIZE(mem_type_mapping_tbl); idx++) {
1412 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1413
1414 if (entry->mem_ptr) {
1415 vfree(entry->mem_ptr);
1416 entry->mem_ptr = NULL;
1417 }
1418 entry->mem_size = 0;
1419 }
1420
1421 btmrvl_sdio_wakeup_fw(priv);
1422 sdio_claim_host(card->func);
1423
1424 BT_INFO("== btmrvl firmware dump start ==");
1425
1426 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1427 if (stat == RDWR_STATUS_FAILURE)
1428 goto done;
1429
1430 reg = card->reg->fw_dump_start;
1431 /* Read the number of the memories which will dump */
1432 dump_num = sdio_readb(card->func, reg, &ret);
1433
1434 if (ret) {
1435 BT_ERR("SDIO read memory length err");
1436 goto done;
1437 }
1438
1439 /* Read the length of every memory which will dump */
1440 for (idx = 0; idx < dump_num; idx++) {
1441 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1442
1443 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1444 if (stat == RDWR_STATUS_FAILURE)
1445 goto done;
1446
1447 memory_size = 0;
1448 reg = card->reg->fw_dump_start;
1449 for (i = 0; i < 4; i++) {
1450 read_reg = sdio_readb(card->func, reg, &ret);
1451 if (ret) {
1452 BT_ERR("SDIO read err");
1453 goto done;
1454 }
1455 memory_size |= (read_reg << i*8);
1456 reg++;
1457 }
1458
1459 if (memory_size == 0) {
1460 BT_INFO("Firmware dump finished!");
1461 sdio_writeb(card->func, FW_DUMP_READ_DONE,
1462 card->reg->fw_dump_ctrl, &ret);
1463 if (ret) {
1464 BT_ERR("SDIO Write MEMDUMP_FINISH ERR");
1465 goto done;
1466 }
1467 break;
1468 }
1469
1470 BT_INFO("%s_SIZE=0x%x", entry->mem_name, memory_size);
1471 entry->mem_ptr = vzalloc(memory_size + 1);
1472 entry->mem_size = memory_size;
1473 if (!entry->mem_ptr) {
1474 BT_ERR("Vzalloc %s failed", entry->mem_name);
1475 goto done;
1476 }
1477
1478 fw_dump_len += (strlen("========Start dump ") +
1479 strlen(entry->mem_name) +
1480 strlen("========\n") +
1481 (memory_size + 1) +
1482 strlen("\n========End dump========\n"));
1483
1484 dbg_ptr = entry->mem_ptr;
1485 end_ptr = dbg_ptr + memory_size;
1486
1487 doneflag = entry->done_flag;
1488 BT_INFO("Start %s output, please wait...",
1489 entry->mem_name);
1490
1491 do {
1492 stat = btmrvl_sdio_rdwr_firmware(priv, doneflag);
1493 if (stat == RDWR_STATUS_FAILURE)
1494 goto done;
1495
1496 reg_start = card->reg->fw_dump_start;
1497 reg_end = card->reg->fw_dump_end;
1498 for (reg = reg_start; reg <= reg_end; reg++) {
1499 *dbg_ptr = sdio_readb(card->func, reg, &ret);
1500 if (ret) {
1501 BT_ERR("SDIO read err");
1502 goto done;
1503 }
1504 if (dbg_ptr < end_ptr)
1505 dbg_ptr++;
1506 else
1507 BT_ERR("Allocated buffer not enough");
1508 }
1509
1510 if (stat != RDWR_STATUS_DONE) {
1511 continue;
1512 } else {
1513 BT_INFO("%s done: size=0x%tx",
1514 entry->mem_name,
1515 dbg_ptr - entry->mem_ptr);
1516 break;
1517 }
1518 } while (1);
1519 }
1520
1521 BT_INFO("== btmrvl firmware dump end ==");
1522
1523 done:
1524 sdio_release_host(card->func);
1525
1526 if (fw_dump_len == 0)
1527 return;
1528
1529 fw_dump_data = vzalloc(fw_dump_len+1);
1530 if (!fw_dump_data) {
1531 BT_ERR("Vzalloc fw_dump_data fail!");
1532 return;
1533 }
1534 fw_dump_ptr = fw_dump_data;
1535
1536 /* Dump all the memory data into single file, a userspace script will
1537 * be used to split all the memory data to multiple files
1538 */
1539 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump start");
1540 for (idx = 0; idx < dump_num; idx++) {
1541 struct memory_type_mapping *entry = &mem_type_mapping_tbl[idx];
1542
1543 if (entry->mem_ptr) {
1544 strcpy(fw_dump_ptr, "========Start dump ");
1545 fw_dump_ptr += strlen("========Start dump ");
1546
1547 strcpy(fw_dump_ptr, entry->mem_name);
1548 fw_dump_ptr += strlen(entry->mem_name);
1549
1550 strcpy(fw_dump_ptr, "========\n");
1551 fw_dump_ptr += strlen("========\n");
1552
1553 memcpy(fw_dump_ptr, entry->mem_ptr, entry->mem_size);
1554 fw_dump_ptr += entry->mem_size;
1555
1556 strcpy(fw_dump_ptr, "\n========End dump========\n");
1557 fw_dump_ptr += strlen("\n========End dump========\n");
1558
1559 vfree(mem_type_mapping_tbl[idx].mem_ptr);
1560 mem_type_mapping_tbl[idx].mem_ptr = NULL;
1561 }
1562 }
1563
1564 /* fw_dump_data will be free in device coredump release function
1565 * after 5 min
1566 */
1567 dev_coredumpv(&card->func->dev, fw_dump_data, fw_dump_len, GFP_KERNEL);
1568 BT_INFO("== btmrvl firmware dump to /sys/class/devcoredump end");
1569 }
1570
1571 static int btmrvl_sdio_probe(struct sdio_func *func,
1572 const struct sdio_device_id *id)
1573 {
1574 int ret = 0;
1575 struct btmrvl_private *priv = NULL;
1576 struct btmrvl_sdio_card *card = NULL;
1577
1578 BT_INFO("vendor=0x%x, device=0x%x, class=%d, fn=%d",
1579 id->vendor, id->device, id->class, func->num);
1580
1581 card = devm_kzalloc(&func->dev, sizeof(*card), GFP_KERNEL);
1582 if (!card)
1583 return -ENOMEM;
1584
1585 card->func = func;
1586
1587 if (id->driver_data) {
1588 struct btmrvl_sdio_device *data = (void *) id->driver_data;
1589 card->helper = data->helper;
1590 card->firmware = data->firmware;
1591 card->reg = data->reg;
1592 card->sd_blksz_fw_dl = data->sd_blksz_fw_dl;
1593 card->support_pscan_win_report = data->support_pscan_win_report;
1594 card->supports_fw_dump = data->supports_fw_dump;
1595 }
1596
1597 if (btmrvl_sdio_register_dev(card) < 0) {
1598 BT_ERR("Failed to register BT device!");
1599 return -ENODEV;
1600 }
1601
1602 /* Disable the interrupts on the card */
1603 btmrvl_sdio_disable_host_int(card);
1604
1605 if (btmrvl_sdio_download_fw(card)) {
1606 BT_ERR("Downloading firmware failed!");
1607 ret = -ENODEV;
1608 goto unreg_dev;
1609 }
1610
1611 btmrvl_sdio_enable_host_int(card);
1612
1613 /* Device tree node parsing and platform specific configuration*/
1614 btmrvl_sdio_probe_of(&func->dev, card);
1615
1616 priv = btmrvl_add_card(card);
1617 if (!priv) {
1618 BT_ERR("Initializing card failed!");
1619 ret = -ENODEV;
1620 goto disable_host_int;
1621 }
1622
1623 card->priv = priv;
1624
1625 /* Initialize the interface specific function pointers */
1626 priv->hw_host_to_card = btmrvl_sdio_host_to_card;
1627 priv->hw_wakeup_firmware = btmrvl_sdio_wakeup_fw;
1628 priv->hw_process_int_status = btmrvl_sdio_process_int_status;
1629
1630 if (btmrvl_register_hdev(priv)) {
1631 BT_ERR("Register hdev failed!");
1632 ret = -ENODEV;
1633 goto disable_host_int;
1634 }
1635
1636 return 0;
1637
1638 disable_host_int:
1639 btmrvl_sdio_disable_host_int(card);
1640 unreg_dev:
1641 btmrvl_sdio_unregister_dev(card);
1642 return ret;
1643 }
1644
1645 static void btmrvl_sdio_remove(struct sdio_func *func)
1646 {
1647 struct btmrvl_sdio_card *card;
1648
1649 if (func) {
1650 card = sdio_get_drvdata(func);
1651 if (card) {
1652 /* Send SHUTDOWN command & disable interrupt
1653 * if user removes the module.
1654 */
1655 if (user_rmmod) {
1656 btmrvl_send_module_cfg_cmd(card->priv,
1657 MODULE_SHUTDOWN_REQ);
1658 btmrvl_sdio_disable_host_int(card);
1659 }
1660
1661 BT_DBG("unregister dev");
1662 card->priv->surprise_removed = true;
1663 btmrvl_sdio_unregister_dev(card);
1664 btmrvl_remove_card(card->priv);
1665 }
1666 }
1667 }
1668
1669 static int btmrvl_sdio_suspend(struct device *dev)
1670 {
1671 struct sdio_func *func = dev_to_sdio_func(dev);
1672 struct btmrvl_sdio_card *card;
1673 struct btmrvl_private *priv;
1674 mmc_pm_flag_t pm_flags;
1675 struct hci_dev *hcidev;
1676
1677 if (func) {
1678 pm_flags = sdio_get_host_pm_caps(func);
1679 BT_DBG("%s: suspend: PM flags = 0x%x", sdio_func_id(func),
1680 pm_flags);
1681 if (!(pm_flags & MMC_PM_KEEP_POWER)) {
1682 BT_ERR("%s: cannot remain alive while suspended",
1683 sdio_func_id(func));
1684 return -ENOSYS;
1685 }
1686 card = sdio_get_drvdata(func);
1687 if (!card || !card->priv) {
1688 BT_ERR("card or priv structure is not valid");
1689 return 0;
1690 }
1691 } else {
1692 BT_ERR("sdio_func is not specified");
1693 return 0;
1694 }
1695
1696 /* Enable platform specific wakeup interrupt */
1697 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0 &&
1698 device_may_wakeup(dev)) {
1699 card->plt_wake_cfg->wake_by_bt = false;
1700 enable_irq(card->plt_wake_cfg->irq_bt);
1701 enable_irq_wake(card->plt_wake_cfg->irq_bt);
1702 }
1703
1704 priv = card->priv;
1705 priv->adapter->is_suspending = true;
1706 hcidev = priv->btmrvl_dev.hcidev;
1707 BT_DBG("%s: SDIO suspend", hcidev->name);
1708 hci_suspend_dev(hcidev);
1709
1710 if (priv->adapter->hs_state != HS_ACTIVATED) {
1711 if (btmrvl_enable_hs(priv)) {
1712 BT_ERR("HS not activated, suspend failed!");
1713 /* Disable platform specific wakeup interrupt */
1714 if (card->plt_wake_cfg &&
1715 card->plt_wake_cfg->irq_bt >= 0 &&
1716 device_may_wakeup(dev)) {
1717 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1718 disable_irq(card->plt_wake_cfg->irq_bt);
1719 }
1720
1721 priv->adapter->is_suspending = false;
1722 return -EBUSY;
1723 }
1724 }
1725
1726 priv->adapter->is_suspending = false;
1727 priv->adapter->is_suspended = true;
1728
1729 /* We will keep the power when hs enabled successfully */
1730 if (priv->adapter->hs_state == HS_ACTIVATED) {
1731 BT_DBG("suspend with MMC_PM_KEEP_POWER");
1732 return sdio_set_host_pm_flags(func, MMC_PM_KEEP_POWER);
1733 }
1734
1735 BT_DBG("suspend without MMC_PM_KEEP_POWER");
1736 return 0;
1737 }
1738
1739 static int btmrvl_sdio_resume(struct device *dev)
1740 {
1741 struct sdio_func *func = dev_to_sdio_func(dev);
1742 struct btmrvl_sdio_card *card;
1743 struct btmrvl_private *priv;
1744 mmc_pm_flag_t pm_flags;
1745 struct hci_dev *hcidev;
1746
1747 if (func) {
1748 pm_flags = sdio_get_host_pm_caps(func);
1749 BT_DBG("%s: resume: PM flags = 0x%x", sdio_func_id(func),
1750 pm_flags);
1751 card = sdio_get_drvdata(func);
1752 if (!card || !card->priv) {
1753 BT_ERR("card or priv structure is not valid");
1754 return 0;
1755 }
1756 } else {
1757 BT_ERR("sdio_func is not specified");
1758 return 0;
1759 }
1760 priv = card->priv;
1761
1762 if (!priv->adapter->is_suspended) {
1763 BT_DBG("device already resumed");
1764 return 0;
1765 }
1766
1767 priv->hw_wakeup_firmware(priv);
1768 priv->adapter->hs_state = HS_DEACTIVATED;
1769 hcidev = priv->btmrvl_dev.hcidev;
1770 BT_DBG("%s: HS DEACTIVATED in resume!", hcidev->name);
1771 priv->adapter->is_suspended = false;
1772 BT_DBG("%s: SDIO resume", hcidev->name);
1773 hci_resume_dev(hcidev);
1774
1775 /* Disable platform specific wakeup interrupt */
1776 if (card->plt_wake_cfg && card->plt_wake_cfg->irq_bt >= 0 &&
1777 device_may_wakeup(dev)) {
1778 disable_irq_wake(card->plt_wake_cfg->irq_bt);
1779 disable_irq(card->plt_wake_cfg->irq_bt);
1780 if (card->plt_wake_cfg->wake_by_bt)
1781 /* Undo our disable, since interrupt handler already
1782 * did this.
1783 */
1784 enable_irq(card->plt_wake_cfg->irq_bt);
1785 }
1786
1787 return 0;
1788 }
1789
1790 static const struct dev_pm_ops btmrvl_sdio_pm_ops = {
1791 .suspend = btmrvl_sdio_suspend,
1792 .resume = btmrvl_sdio_resume,
1793 };
1794
1795 static struct sdio_driver bt_mrvl_sdio = {
1796 .name = "btmrvl_sdio",
1797 .id_table = btmrvl_sdio_ids,
1798 .probe = btmrvl_sdio_probe,
1799 .remove = btmrvl_sdio_remove,
1800 .drv = {
1801 .owner = THIS_MODULE,
1802 .coredump = btmrvl_sdio_coredump,
1803 .pm = &btmrvl_sdio_pm_ops,
1804 }
1805 };
1806
1807 static int __init btmrvl_sdio_init_module(void)
1808 {
1809 if (sdio_register_driver(&bt_mrvl_sdio) != 0) {
1810 BT_ERR("SDIO Driver Registration Failed");
1811 return -ENODEV;
1812 }
1813
1814 /* Clear the flag in case user removes the card. */
1815 user_rmmod = 0;
1816
1817 return 0;
1818 }
1819
1820 static void __exit btmrvl_sdio_exit_module(void)
1821 {
1822 /* Set the flag as user is removing this module. */
1823 user_rmmod = 1;
1824
1825 sdio_unregister_driver(&bt_mrvl_sdio);
1826 }
1827
1828 module_init(btmrvl_sdio_init_module);
1829 module_exit(btmrvl_sdio_exit_module);
1830
1831 MODULE_AUTHOR("Marvell International Ltd.");
1832 MODULE_DESCRIPTION("Marvell BT-over-SDIO driver ver " VERSION);
1833 MODULE_VERSION(VERSION);
1834 MODULE_LICENSE("GPL v2");
1835 MODULE_FIRMWARE("mrvl/sd8688_helper.bin");
1836 MODULE_FIRMWARE("mrvl/sd8688.bin");
1837 MODULE_FIRMWARE("mrvl/sd8787_uapsta.bin");
1838 MODULE_FIRMWARE("mrvl/sd8797_uapsta.bin");
1839 MODULE_FIRMWARE("mrvl/sd8887_uapsta.bin");
1840 MODULE_FIRMWARE("mrvl/sd8897_uapsta.bin");
1841 MODULE_FIRMWARE("mrvl/sdsd8977_combo_v2.bin");
1842 MODULE_FIRMWARE("mrvl/sd8987_uapsta.bin");
1843 MODULE_FIRMWARE("mrvl/sdsd8997_combo_v4.bin");
Linux with added FPC-III support