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/efi.h>
10#include <linux/module.h>
11#include <linux/firmware.h>
12#include <linux/dmi.h>
13#include <linux/of.h>
14#include <linux/string.h>
15#include <linux/unaligned.h>
16
17#include <net/bluetooth/bluetooth.h>
18#include <net/bluetooth/hci_core.h>
19
20#include "btbcm.h"
21
22#define VERSION "0.1"
23
24#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
25#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
26#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
27#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
28#define BDADDR_BCM43430A1 (&(bdaddr_t) {{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa}})
29#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
30#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
31#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
32#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
33#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
34
35#define BCM_FW_NAME_LEN 64
36#define BCM_FW_NAME_COUNT_MAX 4
37/* For kmalloc-ing the fw-name array instead of putting it on the stack */
38typedef char bcm_fw_name[BCM_FW_NAME_LEN];
39
40#ifdef CONFIG_EFI
41static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
42{
43 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
44 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
45 bdaddr_t efi_bdaddr, bdaddr;
46 efi_status_t status;
47 unsigned long len;
48 int ret;
49
50 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
51 return -EOPNOTSUPP;
52
53 len = sizeof(efi_bdaddr);
54 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
55 if (status != EFI_SUCCESS)
56 return -ENXIO;
57
58 if (len != sizeof(efi_bdaddr))
59 return -EIO;
60
61 baswap(dst: &bdaddr, src: &efi_bdaddr);
62
63 ret = btbcm_set_bdaddr(hdev, bdaddr: &bdaddr);
64 if (ret)
65 return ret;
66
67 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
68 return 0;
69}
70#else
71static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
72{
73 return -EOPNOTSUPP;
74}
75#endif
76
77int btbcm_check_bdaddr(struct hci_dev *hdev)
78{
79 struct hci_rp_read_bd_addr *bda;
80 struct sk_buff *skb;
81
82 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, plen: 0, NULL,
83 HCI_INIT_TIMEOUT);
84 if (IS_ERR(ptr: skb)) {
85 int err = PTR_ERR(ptr: skb);
86
87 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
88 return err;
89 }
90
91 if (skb->len != sizeof(*bda)) {
92 bt_dev_err(hdev, "BCM: Device address length mismatch");
93 kfree_skb(skb);
94 return -EIO;
95 }
96
97 bda = (struct hci_rp_read_bd_addr *)skb->data;
98
99 /* Check if the address indicates a controller with either an
100 * invalid or default address. In both cases the device needs
101 * to be marked as not having a valid address.
102 *
103 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
104 * with no configured address.
105 *
106 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
107 * with no configured address.
108 *
109 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
110 * with no configured address.
111 *
112 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
113 * with waiting for configuration state.
114 *
115 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
116 * with waiting for configuration state.
117 *
118 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
119 * with no configured address.
120 *
121 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller
122 * with no configured address.
123 */
124 if (!bacmp(ba1: &bda->bdaddr, BDADDR_BCM20702A0) ||
125 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM20702A1) ||
126 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM2076B1) ||
127 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM4324B3) ||
128 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM4330B1) ||
129 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM4334B0) ||
130 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM4345C5) ||
131 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM43430A0) ||
132 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM43430A1) ||
133 !bacmp(ba1: &bda->bdaddr, BDADDR_BCM43341B)) {
134 /* Try falling back to BDADDR EFI variable */
135 if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
136 bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
137 &bda->bdaddr);
138 hci_set_quirk(hdev, HCI_QUIRK_INVALID_BDADDR);
139 }
140 }
141
142 kfree_skb(skb);
143
144 return 0;
145}
146EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
147
148int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
149{
150 struct sk_buff *skb;
151 int err;
152
153 skb = __hci_cmd_sync(hdev, opcode: 0xfc01, plen: 6, param: bdaddr, HCI_INIT_TIMEOUT);
154 if (IS_ERR(ptr: skb)) {
155 err = PTR_ERR(ptr: skb);
156 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
157 return err;
158 }
159 kfree_skb(skb);
160
161 return 0;
162}
163EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
164
165int btbcm_read_pcm_int_params(struct hci_dev *hdev,
166 struct bcm_set_pcm_int_params *params)
167{
168 struct sk_buff *skb;
169 int err = 0;
170
171 skb = __hci_cmd_sync(hdev, opcode: 0xfc1d, plen: 0, NULL, HCI_INIT_TIMEOUT);
172 if (IS_ERR(ptr: skb)) {
173 err = PTR_ERR(ptr: skb);
174 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
175 return err;
176 }
177
178 if (skb->len != 6 || skb->data[0]) {
179 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
180 kfree_skb(skb);
181 return -EIO;
182 }
183
184 if (params)
185 memcpy(params, skb->data + 1, 5);
186
187 kfree_skb(skb);
188
189 return 0;
190}
191EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
192
193int btbcm_write_pcm_int_params(struct hci_dev *hdev,
194 const struct bcm_set_pcm_int_params *params)
195{
196 struct sk_buff *skb;
197 int err;
198
199 skb = __hci_cmd_sync(hdev, opcode: 0xfc1c, plen: 5, param: params, HCI_INIT_TIMEOUT);
200 if (IS_ERR(ptr: skb)) {
201 err = PTR_ERR(ptr: skb);
202 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
203 return err;
204 }
205 kfree_skb(skb);
206
207 return 0;
208}
209EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
210
211int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
212{
213 const struct hci_command_hdr *cmd;
214 const u8 *fw_ptr;
215 size_t fw_size;
216 struct sk_buff *skb;
217 u16 opcode;
218 int err = 0;
219
220 /* Start Download */
221 skb = __hci_cmd_sync(hdev, opcode: 0xfc2e, plen: 0, NULL, HCI_INIT_TIMEOUT);
222 if (IS_ERR(ptr: skb)) {
223 err = PTR_ERR(ptr: skb);
224 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
225 err);
226 goto done;
227 }
228 kfree_skb(skb);
229
230 /* 50 msec delay after Download Minidrv completes */
231 msleep(msecs: 50);
232
233 fw_ptr = fw->data;
234 fw_size = fw->size;
235
236 while (fw_size >= sizeof(*cmd)) {
237 const u8 *cmd_param;
238
239 cmd = (struct hci_command_hdr *)fw_ptr;
240 fw_ptr += sizeof(*cmd);
241 fw_size -= sizeof(*cmd);
242
243 if (fw_size < cmd->plen) {
244 bt_dev_err(hdev, "BCM: Patch is corrupted");
245 err = -EINVAL;
246 goto done;
247 }
248
249 cmd_param = fw_ptr;
250 fw_ptr += cmd->plen;
251 fw_size -= cmd->plen;
252
253 opcode = le16_to_cpu(cmd->opcode);
254
255 skb = __hci_cmd_sync(hdev, opcode, plen: cmd->plen, param: cmd_param,
256 HCI_INIT_TIMEOUT);
257 if (IS_ERR(ptr: skb)) {
258 err = PTR_ERR(ptr: skb);
259 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
260 opcode, err);
261 goto done;
262 }
263 kfree_skb(skb);
264 }
265
266 /* 250 msec delay after Launch Ram completes */
267 msleep(msecs: 250);
268
269done:
270 return err;
271}
272EXPORT_SYMBOL(btbcm_patchram);
273
274static int btbcm_reset(struct hci_dev *hdev)
275{
276 struct sk_buff *skb;
277
278 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, plen: 0, NULL, HCI_INIT_TIMEOUT);
279 if (IS_ERR(ptr: skb)) {
280 int err = PTR_ERR(ptr: skb);
281
282 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
283 return err;
284 }
285 kfree_skb(skb);
286
287 /* 100 msec delay for module to complete reset process */
288 msleep(msecs: 100);
289
290 return 0;
291}
292
293static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
294{
295 struct sk_buff *skb;
296
297 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, plen: 0, NULL,
298 HCI_INIT_TIMEOUT);
299 if (IS_ERR(ptr: skb)) {
300 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
301 PTR_ERR(skb));
302 return skb;
303 }
304
305 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
306 bt_dev_err(hdev, "BCM: Local name length mismatch");
307 kfree_skb(skb);
308 return ERR_PTR(error: -EIO);
309 }
310
311 return skb;
312}
313
314static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
315{
316 struct sk_buff *skb;
317
318 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, plen: 0, NULL,
319 HCI_INIT_TIMEOUT);
320 if (IS_ERR(ptr: skb)) {
321 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
322 PTR_ERR(skb));
323 return skb;
324 }
325
326 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
327 bt_dev_err(hdev, "BCM: Local version length mismatch");
328 kfree_skb(skb);
329 return ERR_PTR(error: -EIO);
330 }
331
332 return skb;
333}
334
335static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
336{
337 struct sk_buff *skb;
338
339 skb = __hci_cmd_sync(hdev, opcode: 0xfc79, plen: 0, NULL, HCI_INIT_TIMEOUT);
340 if (IS_ERR(ptr: skb)) {
341 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
342 PTR_ERR(skb));
343 return skb;
344 }
345
346 if (skb->len != 7) {
347 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
348 kfree_skb(skb);
349 return ERR_PTR(error: -EIO);
350 }
351
352 return skb;
353}
354
355static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
356{
357 struct sk_buff *skb;
358
359 skb = __hci_cmd_sync(hdev, opcode: 0xfc6e, plen: 0, NULL, HCI_INIT_TIMEOUT);
360 if (IS_ERR(ptr: skb)) {
361 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
362 PTR_ERR(skb));
363 return skb;
364 }
365
366 if (skb->len != 9) {
367 bt_dev_err(hdev, "BCM: Controller features length mismatch");
368 kfree_skb(skb);
369 return ERR_PTR(error: -EIO);
370 }
371
372 return skb;
373}
374
375static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
376{
377 struct sk_buff *skb;
378
379 skb = __hci_cmd_sync(hdev, opcode: 0xfc5a, plen: 0, NULL, HCI_INIT_TIMEOUT);
380 if (IS_ERR(ptr: skb)) {
381 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
382 PTR_ERR(skb));
383 return skb;
384 }
385
386 if (skb->len != 5) {
387 bt_dev_err(hdev, "BCM: USB product length mismatch");
388 kfree_skb(skb);
389 return ERR_PTR(error: -EIO);
390 }
391
392 return skb;
393}
394
395static const struct dmi_system_id disable_broken_read_transmit_power[] = {
396 {
397 .matches = {
398 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
399 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
400 },
401 },
402 {
403 .matches = {
404 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
405 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
406 },
407 },
408 {
409 .matches = {
410 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
411 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
412 },
413 },
414 {
415 .matches = {
416 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
417 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
418 },
419 },
420 {
421 .matches = {
422 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
423 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
424 },
425 },
426 {
427 .matches = {
428 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
429 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
430 },
431 },
432 {
433 .matches = {
434 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
435 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
436 },
437 },
438 { }
439};
440
441static int btbcm_read_info(struct hci_dev *hdev)
442{
443 struct sk_buff *skb;
444
445 /* Read Verbose Config Version Info */
446 skb = btbcm_read_verbose_config(hdev);
447 if (IS_ERR(ptr: skb))
448 return PTR_ERR(ptr: skb);
449
450 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
451 kfree_skb(skb);
452
453 return 0;
454}
455
456static int btbcm_print_controller_features(struct hci_dev *hdev)
457{
458 struct sk_buff *skb;
459
460 /* Read Controller Features */
461 skb = btbcm_read_controller_features(hdev);
462 if (IS_ERR(ptr: skb))
463 return PTR_ERR(ptr: skb);
464
465 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
466 kfree_skb(skb);
467
468 /* Read DMI and disable broken Read LE Min/Max Tx Power */
469 if (dmi_first_match(list: disable_broken_read_transmit_power))
470 hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER);
471
472 return 0;
473}
474
475static int btbcm_print_local_name(struct hci_dev *hdev)
476{
477 struct sk_buff *skb;
478
479 /* Read Local Name */
480 skb = btbcm_read_local_name(hdev);
481 if (IS_ERR(ptr: skb))
482 return PTR_ERR(ptr: skb);
483
484 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
485 kfree_skb(skb);
486
487 return 0;
488}
489
490struct bcm_subver_table {
491 u16 subver;
492 const char *name;
493};
494
495static const struct bcm_subver_table bcm_uart_subver_table[] = {
496 { 0x1111, "BCM4362A2" }, /* 000.017.017 */
497 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
498 { 0x410d, "BCM4334B0" }, /* 002.001.013 */
499 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
500 { 0x4204, "BCM2076B1" }, /* 002.002.004 */
501 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
502 { 0x4606, "BCM4324B5" }, /* 002.006.006 */
503 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
504 { 0x610c, "BCM4354" }, /* 003.001.012 */
505 { 0x2122, "BCM4343A0" }, /* 001.001.034 */
506 { 0x2209, "BCM43430A1" }, /* 001.002.009 */
507 { 0x6119, "BCM4345C0" }, /* 003.001.025 */
508 { 0x6606, "BCM4345C5" }, /* 003.006.006 */
509 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
510 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
511 { 0x420d, "BCM4349B1" }, /* 002.002.013 */
512 { 0x420e, "BCM4349B1" }, /* 002.002.014 */
513 { 0x4217, "BCM4329B1" }, /* 002.002.023 */
514 { 0x6106, "BCM4359C0" }, /* 003.001.006 */
515 { 0x4106, "BCM4335A0" }, /* 002.001.006 */
516 { 0x410c, "BCM43430B0" }, /* 002.001.012 */
517 { 0x2119, "BCM4373A0" }, /* 001.001.025 */
518 { }
519};
520
521static const struct bcm_subver_table bcm_usb_subver_table[] = {
522 { 0x2105, "BCM20703A1" }, /* 001.001.005 */
523 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
524 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
525 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
526 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
527 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
528 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
529 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
530 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
531 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
532 { 0x610c, "BCM4354" }, /* 003.001.012 */
533 { 0x6607, "BCM4350C5" }, /* 003.006.007 */
534 { }
535};
536
537/*
538 * This currently only looks up the device tree board appendix,
539 * but can be expanded to other mechanisms.
540 */
541static const char *btbcm_get_board_name(struct device *dev)
542{
543#ifdef CONFIG_OF
544 struct device_node *root __free(device_node) = of_find_node_by_path(path: "/");
545 char *board_type;
546 const char *tmp;
547
548 if (!root)
549 return NULL;
550
551 if (of_property_read_string_index(np: root, propname: "compatible", index: 0, output: &tmp))
552 return NULL;
553
554 /* get rid of any '/' in the compatible string */
555 board_type = devm_kstrdup(dev, s: tmp, GFP_KERNEL);
556 if (!board_type)
557 return NULL;
558
559 strreplace(str: board_type, old: '/', new: '-');
560
561 return board_type;
562#else
563 return NULL;
564#endif
565}
566
567int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
568{
569 u16 subver, rev, pid, vid;
570 struct sk_buff *skb;
571 struct hci_rp_read_local_version *ver;
572 const struct bcm_subver_table *bcm_subver_table;
573 const char *hw_name = NULL;
574 const char *board_name;
575 char postfix[16] = "";
576 int fw_name_count = 0;
577 bcm_fw_name *fw_name;
578 const struct firmware *fw;
579 int i, err;
580
581 board_name = btbcm_get_board_name(dev: &hdev->dev);
582
583 /* Reset */
584 err = btbcm_reset(hdev);
585 if (err)
586 return err;
587
588 /* Read Local Version Info */
589 skb = btbcm_read_local_version(hdev);
590 if (IS_ERR(ptr: skb))
591 return PTR_ERR(ptr: skb);
592
593 ver = (struct hci_rp_read_local_version *)skb->data;
594 rev = le16_to_cpu(ver->hci_rev);
595 subver = le16_to_cpu(ver->lmp_subver);
596 kfree_skb(skb);
597
598 /* Read controller information */
599 if (!(*fw_load_done)) {
600 err = btbcm_read_info(hdev);
601 if (err)
602 return err;
603 }
604
605 if (!use_autobaud_mode) {
606 err = btbcm_print_controller_features(hdev);
607 if (err)
608 return err;
609
610 err = btbcm_print_local_name(hdev);
611 if (err)
612 return err;
613 }
614
615 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
616 bcm_uart_subver_table;
617
618 for (i = 0; bcm_subver_table[i].name; i++) {
619 if (subver == bcm_subver_table[i].subver) {
620 hw_name = bcm_subver_table[i].name;
621 break;
622 }
623 }
624
625 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
626 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
627 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
628
629 if (*fw_load_done)
630 return 0;
631
632 if (hdev->bus == HCI_USB) {
633 /* Read USB Product Info */
634 skb = btbcm_read_usb_product(hdev);
635 if (IS_ERR(ptr: skb))
636 return PTR_ERR(ptr: skb);
637
638 vid = get_unaligned_le16(p: skb->data + 1);
639 pid = get_unaligned_le16(p: skb->data + 3);
640 kfree_skb(skb);
641
642 snprintf(buf: postfix, size: sizeof(postfix), fmt: "-%4.4x-%4.4x", vid, pid);
643 }
644
645 fw_name = kmalloc_array(BCM_FW_NAME_COUNT_MAX,
646 sizeof(*fw_name),
647 GFP_KERNEL);
648 if (!fw_name)
649 return -ENOMEM;
650
651 if (hw_name) {
652 if (board_name) {
653 snprintf(buf: fw_name[fw_name_count], BCM_FW_NAME_LEN,
654 fmt: "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
655 fw_name_count++;
656 }
657 snprintf(buf: fw_name[fw_name_count], BCM_FW_NAME_LEN,
658 fmt: "brcm/%s%s.hcd", hw_name, postfix);
659 fw_name_count++;
660 }
661
662 if (board_name) {
663 snprintf(buf: fw_name[fw_name_count], BCM_FW_NAME_LEN,
664 fmt: "brcm/BCM%s.%s.hcd", postfix, board_name);
665 fw_name_count++;
666 }
667 snprintf(buf: fw_name[fw_name_count], BCM_FW_NAME_LEN,
668 fmt: "brcm/BCM%s.hcd", postfix);
669 fw_name_count++;
670
671 for (i = 0; i < fw_name_count; i++) {
672 err = firmware_request_nowarn(fw: &fw, name: fw_name[i], device: &hdev->dev);
673 if (err == 0) {
674 bt_dev_info(hdev, "%s '%s' Patch",
675 hw_name ? hw_name : "BCM", fw_name[i]);
676 *fw_load_done = true;
677 break;
678 }
679 }
680
681 if (*fw_load_done) {
682 err = btbcm_patchram(hdev, fw);
683 if (err)
684 bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
685
686 release_firmware(fw);
687 } else {
688 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
689 for (i = 0; i < fw_name_count; i++)
690 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
691 }
692
693 kfree(objp: fw_name);
694 return 0;
695}
696EXPORT_SYMBOL_GPL(btbcm_initialize);
697
698int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
699{
700 int err;
701
702 /* Re-initialize if necessary */
703 if (*fw_load_done) {
704 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
705 if (err)
706 return err;
707 }
708
709 btbcm_check_bdaddr(hdev);
710
711 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER);
712
713 return 0;
714}
715EXPORT_SYMBOL_GPL(btbcm_finalize);
716
717int btbcm_setup_patchram(struct hci_dev *hdev)
718{
719 bool fw_load_done = false;
720 bool use_autobaud_mode = false;
721 int err;
722
723 /* Initialize */
724 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
725 if (err)
726 return err;
727
728 /* Re-initialize after loading Patch */
729 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
730}
731EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
732
733int btbcm_setup_apple(struct hci_dev *hdev)
734{
735 struct sk_buff *skb;
736 int err;
737
738 /* Reset */
739 err = btbcm_reset(hdev);
740 if (err)
741 return err;
742
743 /* Read Verbose Config Version Info */
744 skb = btbcm_read_verbose_config(hdev);
745 if (!IS_ERR(ptr: skb)) {
746 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
747 skb->data[1], get_unaligned_le16(skb->data + 5));
748 kfree_skb(skb);
749 }
750
751 /* Read USB Product Info */
752 skb = btbcm_read_usb_product(hdev);
753 if (!IS_ERR(ptr: skb)) {
754 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
755 get_unaligned_le16(skb->data + 1),
756 get_unaligned_le16(skb->data + 3));
757 kfree_skb(skb);
758 }
759
760 /* Read Controller Features */
761 skb = btbcm_read_controller_features(hdev);
762 if (!IS_ERR(ptr: skb)) {
763 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
764 kfree_skb(skb);
765 }
766
767 /* Read Local Name */
768 skb = btbcm_read_local_name(hdev);
769 if (!IS_ERR(ptr: skb)) {
770 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
771 kfree_skb(skb);
772 }
773
774 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER);
775
776 return 0;
777}
778EXPORT_SYMBOL_GPL(btbcm_setup_apple);
779
780MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
781MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
782MODULE_VERSION(VERSION);
783MODULE_LICENSE("GPL");
784

source code of linux/drivers/bluetooth/btbcm.c