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1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 *
4 * Bluetooth support for Broadcom devices
5 *
6 * Copyright (C) 2015 Intel Corporation
7 */
8
9#include <linux/module.h>
10#include <linux/firmware.h>
11#include <asm/unaligned.h>
12
13#include <net/bluetooth/bluetooth.h>
14#include <net/bluetooth/hci_core.h>
15
16#include "btbcm.h"
17
18#define VERSION "0.1"
19
20#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
21#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
22#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
23#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
24#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
25#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
26#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
27#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
28#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
29
30#define BCM_FW_NAME_LEN 64
31#define BCM_FW_NAME_COUNT_MAX 2
32/* For kmalloc-ing the fw-name array instead of putting it on the stack */
33typedef char bcm_fw_name[BCM_FW_NAME_LEN];
34
35int btbcm_check_bdaddr(struct hci_dev *hdev)
36{
37 struct hci_rp_read_bd_addr *bda;
38 struct sk_buff *skb;
39
40 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
41 HCI_INIT_TIMEOUT);
42 if (IS_ERR(skb)) {
43 int err = PTR_ERR(skb);
44
45 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
46 return err;
47 }
48
49 if (skb->len != sizeof(*bda)) {
50 bt_dev_err(hdev, "BCM: Device address length mismatch");
51 kfree_skb(skb);
52 return -EIO;
53 }
54
55 bda = (struct hci_rp_read_bd_addr *)skb->data;
56
57 /* Check if the address indicates a controller with either an
58 * invalid or default address. In both cases the device needs
59 * to be marked as not having a valid address.
60 *
61 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
62 * with no configured address.
63 *
64 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
65 * with no configured address.
66 *
67 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
68 * with no configured address.
69 *
70 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
71 * with waiting for configuration state.
72 *
73 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
74 * with waiting for configuration state.
75 *
76 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
77 * with no configured address.
78 */
79 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
80 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
81 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
82 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
83 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
84 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
85 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
86 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
87 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
88 bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
89 &bda->bdaddr);
90 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
91 }
92
93 kfree_skb(skb);
94
95 return 0;
96}
97EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
98
99int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
100{
101 struct sk_buff *skb;
102 int err;
103
104 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
105 if (IS_ERR(skb)) {
106 err = PTR_ERR(skb);
107 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
108 return err;
109 }
110 kfree_skb(skb);
111
112 return 0;
113}
114EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
115
116int btbcm_read_pcm_int_params(struct hci_dev *hdev,
117 struct bcm_set_pcm_int_params *params)
118{
119 struct sk_buff *skb;
120 int err = 0;
121
122 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
123 if (IS_ERR(skb)) {
124 err = PTR_ERR(skb);
125 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
126 return err;
127 }
128
129 if (skb->len != 6 || skb->data[0]) {
130 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
131 kfree_skb(skb);
132 return -EIO;
133 }
134
135 if (params)
136 memcpy(params, skb->data + 1, 5);
137
138 kfree_skb(skb);
139
140 return 0;
141}
142EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
143
144int btbcm_write_pcm_int_params(struct hci_dev *hdev,
145 const struct bcm_set_pcm_int_params *params)
146{
147 struct sk_buff *skb;
148 int err;
149
150 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
151 if (IS_ERR(skb)) {
152 err = PTR_ERR(skb);
153 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
154 return err;
155 }
156 kfree_skb(skb);
157
158 return 0;
159}
160EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
161
162int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
163{
164 const struct hci_command_hdr *cmd;
165 const u8 *fw_ptr;
166 size_t fw_size;
167 struct sk_buff *skb;
168 u16 opcode;
169 int err = 0;
170
171 /* Start Download */
172 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
173 if (IS_ERR(skb)) {
174 err = PTR_ERR(skb);
175 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
176 err);
177 goto done;
178 }
179 kfree_skb(skb);
180
181 /* 50 msec delay after Download Minidrv completes */
182 msleep(50);
183
184 fw_ptr = fw->data;
185 fw_size = fw->size;
186
187 while (fw_size >= sizeof(*cmd)) {
188 const u8 *cmd_param;
189
190 cmd = (struct hci_command_hdr *)fw_ptr;
191 fw_ptr += sizeof(*cmd);
192 fw_size -= sizeof(*cmd);
193
194 if (fw_size < cmd->plen) {
195 bt_dev_err(hdev, "BCM: Patch is corrupted");
196 err = -EINVAL;
197 goto done;
198 }
199
200 cmd_param = fw_ptr;
201 fw_ptr += cmd->plen;
202 fw_size -= cmd->plen;
203
204 opcode = le16_to_cpu(cmd->opcode);
205
206 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
207 HCI_INIT_TIMEOUT);
208 if (IS_ERR(skb)) {
209 err = PTR_ERR(skb);
210 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
211 opcode, err);
212 goto done;
213 }
214 kfree_skb(skb);
215 }
216
217 /* 250 msec delay after Launch Ram completes */
218 msleep(250);
219
220done:
221 return err;
222}
223EXPORT_SYMBOL(btbcm_patchram);
224
225static int btbcm_reset(struct hci_dev *hdev)
226{
227 struct sk_buff *skb;
228
229 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
230 if (IS_ERR(skb)) {
231 int err = PTR_ERR(skb);
232
233 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
234 return err;
235 }
236 kfree_skb(skb);
237
238 /* 100 msec delay for module to complete reset process */
239 msleep(100);
240
241 return 0;
242}
243
244static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
245{
246 struct sk_buff *skb;
247
248 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
249 HCI_INIT_TIMEOUT);
250 if (IS_ERR(skb)) {
251 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
252 PTR_ERR(skb));
253 return skb;
254 }
255
256 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
257 bt_dev_err(hdev, "BCM: Local name length mismatch");
258 kfree_skb(skb);
259 return ERR_PTR(-EIO);
260 }
261
262 return skb;
263}
264
265static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
266{
267 struct sk_buff *skb;
268
269 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
270 HCI_INIT_TIMEOUT);
271 if (IS_ERR(skb)) {
272 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
273 PTR_ERR(skb));
274 return skb;
275 }
276
277 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
278 bt_dev_err(hdev, "BCM: Local version length mismatch");
279 kfree_skb(skb);
280 return ERR_PTR(-EIO);
281 }
282
283 return skb;
284}
285
286static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
287{
288 struct sk_buff *skb;
289
290 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
291 if (IS_ERR(skb)) {
292 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
293 PTR_ERR(skb));
294 return skb;
295 }
296
297 if (skb->len != 7) {
298 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
299 kfree_skb(skb);
300 return ERR_PTR(-EIO);
301 }
302
303 return skb;
304}
305
306static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
307{
308 struct sk_buff *skb;
309
310 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
311 if (IS_ERR(skb)) {
312 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
313 PTR_ERR(skb));
314 return skb;
315 }
316
317 if (skb->len != 9) {
318 bt_dev_err(hdev, "BCM: Controller features length mismatch");
319 kfree_skb(skb);
320 return ERR_PTR(-EIO);
321 }
322
323 return skb;
324}
325
326static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
327{
328 struct sk_buff *skb;
329
330 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
331 if (IS_ERR(skb)) {
332 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
333 PTR_ERR(skb));
334 return skb;
335 }
336
337 if (skb->len != 5) {
338 bt_dev_err(hdev, "BCM: USB product length mismatch");
339 kfree_skb(skb);
340 return ERR_PTR(-EIO);
341 }
342
343 return skb;
344}
345
346static int btbcm_read_info(struct hci_dev *hdev)
347{
348 struct sk_buff *skb;
349
350 /* Read Verbose Config Version Info */
351 skb = btbcm_read_verbose_config(hdev);
352 if (IS_ERR(skb))
353 return PTR_ERR(skb);
354
355 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
356 kfree_skb(skb);
357
358 /* Read Controller Features */
359 skb = btbcm_read_controller_features(hdev);
360 if (IS_ERR(skb))
361 return PTR_ERR(skb);
362
363 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
364 kfree_skb(skb);
365
366 return 0;
367}
368
369static int btbcm_print_local_name(struct hci_dev *hdev)
370{
371 struct sk_buff *skb;
372
373 /* Read Local Name */
374 skb = btbcm_read_local_name(hdev);
375 if (IS_ERR(skb))
376 return PTR_ERR(skb);
377
378 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
379 kfree_skb(skb);
380
381 return 0;
382}
383
384struct bcm_subver_table {
385 u16 subver;
386 const char *name;
387};
388
389static const struct bcm_subver_table bcm_uart_subver_table[] = {
390 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
391 { 0x410d, "BCM4334B0" }, /* 002.001.013 */
392 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
393 { 0x4204, "BCM2076B1" }, /* 002.002.004 */
394 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
395 { 0x4606, "BCM4324B5" }, /* 002.006.006 */
396 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
397 { 0x610c, "BCM4354" }, /* 003.001.012 */
398 { 0x2122, "BCM4343A0" }, /* 001.001.034 */
399 { 0x2209, "BCM43430A1" }, /* 001.002.009 */
400 { 0x6119, "BCM4345C0" }, /* 003.001.025 */
401 { 0x6606, "BCM4345C5" }, /* 003.006.006 */
402 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
403 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
404 { 0x4217, "BCM4329B1" }, /* 002.002.023 */
405 { 0x6106, "BCM4359C0" }, /* 003.001.006 */
406 { 0x4106, "BCM4335A0" }, /* 002.001.006 */
407 { }
408};
409
410static const struct bcm_subver_table bcm_usb_subver_table[] = {
411 { 0x2105, "BCM20703A1" }, /* 001.001.005 */
412 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
413 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
414 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
415 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
416 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
417 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
418 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
419 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
420 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
421 { 0x610c, "BCM4354" }, /* 003.001.012 */
422 { 0x6607, "BCM4350C5" }, /* 003.006.007 */
423 { }
424};
425
426int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done)
427{
428 u16 subver, rev, pid, vid;
429 struct sk_buff *skb;
430 struct hci_rp_read_local_version *ver;
431 const struct bcm_subver_table *bcm_subver_table;
432 const char *hw_name = NULL;
433 char postfix[16] = "";
434 int fw_name_count = 0;
435 bcm_fw_name *fw_name;
436 const struct firmware *fw;
437 int i, err;
438
439 /* Reset */
440 err = btbcm_reset(hdev);
441 if (err)
442 return err;
443
444 /* Read Local Version Info */
445 skb = btbcm_read_local_version(hdev);
446 if (IS_ERR(skb))
447 return PTR_ERR(skb);
448
449 ver = (struct hci_rp_read_local_version *)skb->data;
450 rev = le16_to_cpu(ver->hci_rev);
451 subver = le16_to_cpu(ver->lmp_subver);
452 kfree_skb(skb);
453
454 /* Read controller information */
455 if (!(*fw_load_done)) {
456 err = btbcm_read_info(hdev);
457 if (err)
458 return err;
459 }
460 err = btbcm_print_local_name(hdev);
461 if (err)
462 return err;
463
464 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
465 bcm_uart_subver_table;
466
467 for (i = 0; bcm_subver_table[i].name; i++) {
468 if (subver == bcm_subver_table[i].subver) {
469 hw_name = bcm_subver_table[i].name;
470 break;
471 }
472 }
473
474 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
475 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
476 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
477
478 if (*fw_load_done)
479 return 0;
480
481 if (hdev->bus == HCI_USB) {
482 /* Read USB Product Info */
483 skb = btbcm_read_usb_product(hdev);
484 if (IS_ERR(skb))
485 return PTR_ERR(skb);
486
487 vid = get_unaligned_le16(skb->data + 1);
488 pid = get_unaligned_le16(skb->data + 3);
489 kfree_skb(skb);
490
491 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
492 }
493
494 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
495 if (!fw_name)
496 return -ENOMEM;
497
498 if (hw_name) {
499 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
500 "brcm/%s%s.hcd", hw_name, postfix);
501 fw_name_count++;
502 }
503
504 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
505 "brcm/BCM%s.hcd", postfix);
506 fw_name_count++;
507
508 for (i = 0; i < fw_name_count; i++) {
509 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
510 if (err == 0) {
511 bt_dev_info(hdev, "%s '%s' Patch",
512 hw_name ? hw_name : "BCM", fw_name[i]);
513 *fw_load_done = true;
514 break;
515 }
516 }
517
518 if (*fw_load_done) {
519 err = btbcm_patchram(hdev, fw);
520 if (err)
521 bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
522
523 release_firmware(fw);
524 } else {
525 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
526 for (i = 0; i < fw_name_count; i++)
527 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
528 }
529
530 kfree(fw_name);
531 return 0;
532}
533EXPORT_SYMBOL_GPL(btbcm_initialize);
534
535int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done)
536{
537 int err;
538
539 /* Re-initialize if necessary */
540 if (*fw_load_done) {
541 err = btbcm_initialize(hdev, fw_load_done);
542 if (err)
543 return err;
544 }
545
546 btbcm_check_bdaddr(hdev);
547
548 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
549
550 return 0;
551}
552EXPORT_SYMBOL_GPL(btbcm_finalize);
553
554int btbcm_setup_patchram(struct hci_dev *hdev)
555{
556 bool fw_load_done = false;
557 int err;
558
559 /* Initialize */
560 err = btbcm_initialize(hdev, &fw_load_done);
561 if (err)
562 return err;
563
564 /* Re-initialize after loading Patch */
565 return btbcm_finalize(hdev, &fw_load_done);
566}
567EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
568
569int btbcm_setup_apple(struct hci_dev *hdev)
570{
571 struct sk_buff *skb;
572 int err;
573
574 /* Reset */
575 err = btbcm_reset(hdev);
576 if (err)
577 return err;
578
579 /* Read Verbose Config Version Info */
580 skb = btbcm_read_verbose_config(hdev);
581 if (!IS_ERR(skb)) {
582 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
583 skb->data[1], get_unaligned_le16(skb->data + 5));
584 kfree_skb(skb);
585 }
586
587 /* Read USB Product Info */
588 skb = btbcm_read_usb_product(hdev);
589 if (!IS_ERR(skb)) {
590 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
591 get_unaligned_le16(skb->data + 1),
592 get_unaligned_le16(skb->data + 3));
593 kfree_skb(skb);
594 }
595
596 /* Read Controller Features */
597 skb = btbcm_read_controller_features(hdev);
598 if (!IS_ERR(skb)) {
599 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
600 kfree_skb(skb);
601 }
602
603 /* Read Local Name */
604 skb = btbcm_read_local_name(hdev);
605 if (!IS_ERR(skb)) {
606 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
607 kfree_skb(skb);
608 }
609
610 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
611
612 return 0;
613}
614EXPORT_SYMBOL_GPL(btbcm_setup_apple);
615
616MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
617MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
618MODULE_VERSION(VERSION);
619MODULE_LICENSE("GPL");
1/*
2 *
3 * Bluetooth support for Broadcom devices
4 *
5 * Copyright (C) 2015 Intel Corporation
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 */
23
24#include <linux/module.h>
25#include <linux/firmware.h>
26#include <asm/unaligned.h>
27
28#include <net/bluetooth/bluetooth.h>
29#include <net/bluetooth/hci_core.h>
30
31#include "btbcm.h"
32
33#define VERSION "0.1"
34
35#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
36#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
37#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
38
39int btbcm_check_bdaddr(struct hci_dev *hdev)
40{
41 struct hci_rp_read_bd_addr *bda;
42 struct sk_buff *skb;
43
44 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
45 HCI_INIT_TIMEOUT);
46 if (IS_ERR(skb)) {
47 int err = PTR_ERR(skb);
48 BT_ERR("%s: BCM: Reading device address failed (%d)",
49 hdev->name, err);
50 return err;
51 }
52
53 if (skb->len != sizeof(*bda)) {
54 BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
55 kfree_skb(skb);
56 return -EIO;
57 }
58
59 bda = (struct hci_rp_read_bd_addr *)skb->data;
60
61 /* Check if the address indicates a controller with either an
62 * invalid or default address. In both cases the device needs
63 * to be marked as not having a valid address.
64 *
65 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
66 * with no configured address.
67 *
68 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
69 * with waiting for configuration state.
70 *
71 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
72 * with waiting for configuration state.
73 */
74 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
75 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
76 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
77 BT_INFO("%s: BCM: Using default device address (%pMR)",
78 hdev->name, &bda->bdaddr);
79 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
80 }
81
82 kfree_skb(skb);
83
84 return 0;
85}
86EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
87
88int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
89{
90 struct sk_buff *skb;
91 int err;
92
93 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
94 if (IS_ERR(skb)) {
95 err = PTR_ERR(skb);
96 BT_ERR("%s: BCM: Change address command failed (%d)",
97 hdev->name, err);
98 return err;
99 }
100 kfree_skb(skb);
101
102 return 0;
103}
104EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
105
106int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
107{
108 const struct hci_command_hdr *cmd;
109 const u8 *fw_ptr;
110 size_t fw_size;
111 struct sk_buff *skb;
112 u16 opcode;
113 int err = 0;
114
115 /* Start Download */
116 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
117 if (IS_ERR(skb)) {
118 err = PTR_ERR(skb);
119 BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
120 hdev->name, err);
121 goto done;
122 }
123 kfree_skb(skb);
124
125 /* 50 msec delay after Download Minidrv completes */
126 msleep(50);
127
128 fw_ptr = fw->data;
129 fw_size = fw->size;
130
131 while (fw_size >= sizeof(*cmd)) {
132 const u8 *cmd_param;
133
134 cmd = (struct hci_command_hdr *)fw_ptr;
135 fw_ptr += sizeof(*cmd);
136 fw_size -= sizeof(*cmd);
137
138 if (fw_size < cmd->plen) {
139 BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
140 err = -EINVAL;
141 goto done;
142 }
143
144 cmd_param = fw_ptr;
145 fw_ptr += cmd->plen;
146 fw_size -= cmd->plen;
147
148 opcode = le16_to_cpu(cmd->opcode);
149
150 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
151 HCI_INIT_TIMEOUT);
152 if (IS_ERR(skb)) {
153 err = PTR_ERR(skb);
154 BT_ERR("%s: BCM: Patch command %04x failed (%d)",
155 hdev->name, opcode, err);
156 goto done;
157 }
158 kfree_skb(skb);
159 }
160
161 /* 250 msec delay after Launch Ram completes */
162 msleep(250);
163
164done:
165 return err;
166}
167EXPORT_SYMBOL(btbcm_patchram);
168
169static int btbcm_reset(struct hci_dev *hdev)
170{
171 struct sk_buff *skb;
172
173 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
174 if (IS_ERR(skb)) {
175 int err = PTR_ERR(skb);
176 BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
177 return err;
178 }
179 kfree_skb(skb);
180
181 return 0;
182}
183
184static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
185{
186 struct sk_buff *skb;
187
188 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
189 HCI_INIT_TIMEOUT);
190 if (IS_ERR(skb)) {
191 BT_ERR("%s: BCM: Reading local name failed (%ld)",
192 hdev->name, PTR_ERR(skb));
193 return skb;
194 }
195
196 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
197 BT_ERR("%s: BCM: Local name length mismatch", hdev->name);
198 kfree_skb(skb);
199 return ERR_PTR(-EIO);
200 }
201
202 return skb;
203}
204
205static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
206{
207 struct sk_buff *skb;
208
209 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
210 HCI_INIT_TIMEOUT);
211 if (IS_ERR(skb)) {
212 BT_ERR("%s: BCM: Reading local version info failed (%ld)",
213 hdev->name, PTR_ERR(skb));
214 return skb;
215 }
216
217 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
218 BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
219 kfree_skb(skb);
220 return ERR_PTR(-EIO);
221 }
222
223 return skb;
224}
225
226static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
227{
228 struct sk_buff *skb;
229
230 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
231 if (IS_ERR(skb)) {
232 BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
233 hdev->name, PTR_ERR(skb));
234 return skb;
235 }
236
237 if (skb->len != 7) {
238 BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
239 kfree_skb(skb);
240 return ERR_PTR(-EIO);
241 }
242
243 return skb;
244}
245
246static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
247{
248 struct sk_buff *skb;
249
250 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
251 if (IS_ERR(skb)) {
252 BT_ERR("%s: BCM: Read USB product info failed (%ld)",
253 hdev->name, PTR_ERR(skb));
254 return skb;
255 }
256
257 if (skb->len != 5) {
258 BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
259 kfree_skb(skb);
260 return ERR_PTR(-EIO);
261 }
262
263 return skb;
264}
265
266static const struct {
267 u16 subver;
268 const char *name;
269} bcm_uart_subver_table[] = {
270 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
271 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
272 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
273 { 0x610c, "BCM4354" }, /* 003.001.012 */
274 { }
275};
276
277int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
278{
279 u16 subver, rev;
280 const char *hw_name = NULL;
281 struct sk_buff *skb;
282 struct hci_rp_read_local_version *ver;
283 int i, err;
284
285 /* Reset */
286 err = btbcm_reset(hdev);
287 if (err)
288 return err;
289
290 /* Read Local Version Info */
291 skb = btbcm_read_local_version(hdev);
292 if (IS_ERR(skb))
293 return PTR_ERR(skb);
294
295 ver = (struct hci_rp_read_local_version *)skb->data;
296 rev = le16_to_cpu(ver->hci_rev);
297 subver = le16_to_cpu(ver->lmp_subver);
298 kfree_skb(skb);
299
300 /* Read Verbose Config Version Info */
301 skb = btbcm_read_verbose_config(hdev);
302 if (IS_ERR(skb))
303 return PTR_ERR(skb);
304
305 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
306 kfree_skb(skb);
307
308 switch ((rev & 0xf000) >> 12) {
309 case 0:
310 case 1:
311 case 3:
312 for (i = 0; bcm_uart_subver_table[i].name; i++) {
313 if (subver == bcm_uart_subver_table[i].subver) {
314 hw_name = bcm_uart_subver_table[i].name;
315 break;
316 }
317 }
318
319 snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
320 break;
321 default:
322 return 0;
323 }
324
325 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
326 hw_name ? : "BCM", (subver & 0xe000) >> 13,
327 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
328
329 return 0;
330}
331EXPORT_SYMBOL_GPL(btbcm_initialize);
332
333int btbcm_finalize(struct hci_dev *hdev)
334{
335 struct sk_buff *skb;
336 struct hci_rp_read_local_version *ver;
337 u16 subver, rev;
338 int err;
339
340 /* Reset */
341 err = btbcm_reset(hdev);
342 if (err)
343 return err;
344
345 /* Read Local Version Info */
346 skb = btbcm_read_local_version(hdev);
347 if (IS_ERR(skb))
348 return PTR_ERR(skb);
349
350 ver = (struct hci_rp_read_local_version *)skb->data;
351 rev = le16_to_cpu(ver->hci_rev);
352 subver = le16_to_cpu(ver->lmp_subver);
353 kfree_skb(skb);
354
355 BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
356 (subver & 0xe000) >> 13, (subver & 0x1f00) >> 8,
357 (subver & 0x00ff), rev & 0x0fff);
358
359 btbcm_check_bdaddr(hdev);
360
361 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
362
363 return 0;
364}
365EXPORT_SYMBOL_GPL(btbcm_finalize);
366
367static const struct {
368 u16 subver;
369 const char *name;
370} bcm_usb_subver_table[] = {
371 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
372 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
373 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
374 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
375 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
376 { 0x230f, "BCM4354A2" }, /* 001.003.015 */
377 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
378 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
379 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
380 { 0x610c, "BCM4354" }, /* 003.001.012 */
381 { }
382};
383
384int btbcm_setup_patchram(struct hci_dev *hdev)
385{
386 char fw_name[64];
387 const struct firmware *fw;
388 u16 subver, rev, pid, vid;
389 const char *hw_name = NULL;
390 struct sk_buff *skb;
391 struct hci_rp_read_local_version *ver;
392 int i, err;
393
394 /* Reset */
395 err = btbcm_reset(hdev);
396 if (err)
397 return err;
398
399 /* Read Local Version Info */
400 skb = btbcm_read_local_version(hdev);
401 if (IS_ERR(skb))
402 return PTR_ERR(skb);
403
404 ver = (struct hci_rp_read_local_version *)skb->data;
405 rev = le16_to_cpu(ver->hci_rev);
406 subver = le16_to_cpu(ver->lmp_subver);
407 kfree_skb(skb);
408
409 /* Read Verbose Config Version Info */
410 skb = btbcm_read_verbose_config(hdev);
411 if (IS_ERR(skb))
412 return PTR_ERR(skb);
413
414 BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
415 kfree_skb(skb);
416
417 /* Read Local Name */
418 skb = btbcm_read_local_name(hdev);
419 if (IS_ERR(skb))
420 return PTR_ERR(skb);
421
422 BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
423 kfree_skb(skb);
424
425 switch ((rev & 0xf000) >> 12) {
426 case 0:
427 case 3:
428 for (i = 0; bcm_uart_subver_table[i].name; i++) {
429 if (subver == bcm_uart_subver_table[i].subver) {
430 hw_name = bcm_uart_subver_table[i].name;
431 break;
432 }
433 }
434
435 snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
436 hw_name ? : "BCM");
437 break;
438 case 1:
439 case 2:
440 /* Read USB Product Info */
441 skb = btbcm_read_usb_product(hdev);
442 if (IS_ERR(skb))
443 return PTR_ERR(skb);
444
445 vid = get_unaligned_le16(skb->data + 1);
446 pid = get_unaligned_le16(skb->data + 3);
447 kfree_skb(skb);
448
449 for (i = 0; bcm_usb_subver_table[i].name; i++) {
450 if (subver == bcm_usb_subver_table[i].subver) {
451 hw_name = bcm_usb_subver_table[i].name;
452 break;
453 }
454 }
455
456 snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
457 hw_name ? : "BCM", vid, pid);
458 break;
459 default:
460 return 0;
461 }
462
463 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
464 hw_name ? : "BCM", (subver & 0xe000) >> 13,
465 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
466
467 err = request_firmware(&fw, fw_name, &hdev->dev);
468 if (err < 0) {
469 BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
470 goto done;
471 }
472
473 btbcm_patchram(hdev, fw);
474
475 release_firmware(fw);
476
477 /* Reset */
478 err = btbcm_reset(hdev);
479 if (err)
480 return err;
481
482 /* Read Local Version Info */
483 skb = btbcm_read_local_version(hdev);
484 if (IS_ERR(skb))
485 return PTR_ERR(skb);
486
487 ver = (struct hci_rp_read_local_version *)skb->data;
488 rev = le16_to_cpu(ver->hci_rev);
489 subver = le16_to_cpu(ver->lmp_subver);
490 kfree_skb(skb);
491
492 BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
493 hw_name ? : "BCM", (subver & 0xe000) >> 13,
494 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
495
496 /* Read Local Name */
497 skb = btbcm_read_local_name(hdev);
498 if (IS_ERR(skb))
499 return PTR_ERR(skb);
500
501 BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
502 kfree_skb(skb);
503
504done:
505 btbcm_check_bdaddr(hdev);
506
507 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
508
509 return 0;
510}
511EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
512
513int btbcm_setup_apple(struct hci_dev *hdev)
514{
515 struct sk_buff *skb;
516 int err;
517
518 /* Reset */
519 err = btbcm_reset(hdev);
520 if (err)
521 return err;
522
523 /* Read Verbose Config Version Info */
524 skb = btbcm_read_verbose_config(hdev);
525 if (!IS_ERR(skb)) {
526 BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name,
527 skb->data[1], get_unaligned_le16(skb->data + 5));
528 kfree_skb(skb);
529 }
530
531 /* Read USB Product Info */
532 skb = btbcm_read_usb_product(hdev);
533 if (!IS_ERR(skb)) {
534 BT_INFO("%s: BCM: product %4.4x:%4.4x", hdev->name,
535 get_unaligned_le16(skb->data + 1),
536 get_unaligned_le16(skb->data + 3));
537 kfree_skb(skb);
538 }
539
540 /* Read Local Name */
541 skb = btbcm_read_local_name(hdev);
542 if (!IS_ERR(skb)) {
543 BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
544 kfree_skb(skb);
545 }
546
547 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
548
549 return 0;
550}
551EXPORT_SYMBOL_GPL(btbcm_setup_apple);
552
553MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
554MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
555MODULE_VERSION(VERSION);
556MODULE_LICENSE("GPL");