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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 <linux/dmi.h>
12#include <linux/of.h>
13#include <asm/unaligned.h>
14
15#include <net/bluetooth/bluetooth.h>
16#include <net/bluetooth/hci_core.h>
17
18#include "btbcm.h"
19
20#define VERSION "0.1"
21
22#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
23#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
24#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
25#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
26#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
27#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
28#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
29#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
30#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
31
32#define BCM_FW_NAME_LEN 64
33#define BCM_FW_NAME_COUNT_MAX 4
34/* For kmalloc-ing the fw-name array instead of putting it on the stack */
35typedef char bcm_fw_name[BCM_FW_NAME_LEN];
36
37int btbcm_check_bdaddr(struct hci_dev *hdev)
38{
39 struct hci_rp_read_bd_addr *bda;
40 struct sk_buff *skb;
41
42 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
43 HCI_INIT_TIMEOUT);
44 if (IS_ERR(skb)) {
45 int err = PTR_ERR(skb);
46
47 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
48 return err;
49 }
50
51 if (skb->len != sizeof(*bda)) {
52 bt_dev_err(hdev, "BCM: Device address length mismatch");
53 kfree_skb(skb);
54 return -EIO;
55 }
56
57 bda = (struct hci_rp_read_bd_addr *)skb->data;
58
59 /* Check if the address indicates a controller with either an
60 * invalid or default address. In both cases the device needs
61 * to be marked as not having a valid address.
62 *
63 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
64 * with no configured address.
65 *
66 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
67 * with no configured address.
68 *
69 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
70 * with no configured address.
71 *
72 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
73 * with waiting for configuration state.
74 *
75 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
76 * with waiting for configuration state.
77 *
78 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
79 * with no configured address.
80 */
81 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
82 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
83 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
84 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
85 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
86 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
87 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
88 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
89 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
90 bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
91 &bda->bdaddr);
92 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
93 }
94
95 kfree_skb(skb);
96
97 return 0;
98}
99EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
100
101int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
102{
103 struct sk_buff *skb;
104 int err;
105
106 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
107 if (IS_ERR(skb)) {
108 err = PTR_ERR(skb);
109 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
110 return err;
111 }
112 kfree_skb(skb);
113
114 return 0;
115}
116EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
117
118int btbcm_read_pcm_int_params(struct hci_dev *hdev,
119 struct bcm_set_pcm_int_params *params)
120{
121 struct sk_buff *skb;
122 int err = 0;
123
124 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
125 if (IS_ERR(skb)) {
126 err = PTR_ERR(skb);
127 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
128 return err;
129 }
130
131 if (skb->len != 6 || skb->data[0]) {
132 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
133 kfree_skb(skb);
134 return -EIO;
135 }
136
137 if (params)
138 memcpy(params, skb->data + 1, 5);
139
140 kfree_skb(skb);
141
142 return 0;
143}
144EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
145
146int btbcm_write_pcm_int_params(struct hci_dev *hdev,
147 const struct bcm_set_pcm_int_params *params)
148{
149 struct sk_buff *skb;
150 int err;
151
152 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
153 if (IS_ERR(skb)) {
154 err = PTR_ERR(skb);
155 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
156 return err;
157 }
158 kfree_skb(skb);
159
160 return 0;
161}
162EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
163
164int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
165{
166 const struct hci_command_hdr *cmd;
167 const u8 *fw_ptr;
168 size_t fw_size;
169 struct sk_buff *skb;
170 u16 opcode;
171 int err = 0;
172
173 /* Start Download */
174 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
175 if (IS_ERR(skb)) {
176 err = PTR_ERR(skb);
177 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
178 err);
179 goto done;
180 }
181 kfree_skb(skb);
182
183 /* 50 msec delay after Download Minidrv completes */
184 msleep(50);
185
186 fw_ptr = fw->data;
187 fw_size = fw->size;
188
189 while (fw_size >= sizeof(*cmd)) {
190 const u8 *cmd_param;
191
192 cmd = (struct hci_command_hdr *)fw_ptr;
193 fw_ptr += sizeof(*cmd);
194 fw_size -= sizeof(*cmd);
195
196 if (fw_size < cmd->plen) {
197 bt_dev_err(hdev, "BCM: Patch is corrupted");
198 err = -EINVAL;
199 goto done;
200 }
201
202 cmd_param = fw_ptr;
203 fw_ptr += cmd->plen;
204 fw_size -= cmd->plen;
205
206 opcode = le16_to_cpu(cmd->opcode);
207
208 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
209 HCI_INIT_TIMEOUT);
210 if (IS_ERR(skb)) {
211 err = PTR_ERR(skb);
212 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
213 opcode, err);
214 goto done;
215 }
216 kfree_skb(skb);
217 }
218
219 /* 250 msec delay after Launch Ram completes */
220 msleep(250);
221
222done:
223 return err;
224}
225EXPORT_SYMBOL(btbcm_patchram);
226
227static int btbcm_reset(struct hci_dev *hdev)
228{
229 struct sk_buff *skb;
230
231 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
232 if (IS_ERR(skb)) {
233 int err = PTR_ERR(skb);
234
235 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
236 return err;
237 }
238 kfree_skb(skb);
239
240 /* 100 msec delay for module to complete reset process */
241 msleep(100);
242
243 return 0;
244}
245
246static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
247{
248 struct sk_buff *skb;
249
250 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
251 HCI_INIT_TIMEOUT);
252 if (IS_ERR(skb)) {
253 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
254 PTR_ERR(skb));
255 return skb;
256 }
257
258 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
259 bt_dev_err(hdev, "BCM: Local name length mismatch");
260 kfree_skb(skb);
261 return ERR_PTR(-EIO);
262 }
263
264 return skb;
265}
266
267static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
268{
269 struct sk_buff *skb;
270
271 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
272 HCI_INIT_TIMEOUT);
273 if (IS_ERR(skb)) {
274 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
275 PTR_ERR(skb));
276 return skb;
277 }
278
279 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
280 bt_dev_err(hdev, "BCM: Local version length mismatch");
281 kfree_skb(skb);
282 return ERR_PTR(-EIO);
283 }
284
285 return skb;
286}
287
288static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
289{
290 struct sk_buff *skb;
291
292 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
293 if (IS_ERR(skb)) {
294 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
295 PTR_ERR(skb));
296 return skb;
297 }
298
299 if (skb->len != 7) {
300 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
301 kfree_skb(skb);
302 return ERR_PTR(-EIO);
303 }
304
305 return skb;
306}
307
308static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
309{
310 struct sk_buff *skb;
311
312 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
313 if (IS_ERR(skb)) {
314 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
315 PTR_ERR(skb));
316 return skb;
317 }
318
319 if (skb->len != 9) {
320 bt_dev_err(hdev, "BCM: Controller features length mismatch");
321 kfree_skb(skb);
322 return ERR_PTR(-EIO);
323 }
324
325 return skb;
326}
327
328static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
329{
330 struct sk_buff *skb;
331
332 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
333 if (IS_ERR(skb)) {
334 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
335 PTR_ERR(skb));
336 return skb;
337 }
338
339 if (skb->len != 5) {
340 bt_dev_err(hdev, "BCM: USB product length mismatch");
341 kfree_skb(skb);
342 return ERR_PTR(-EIO);
343 }
344
345 return skb;
346}
347
348static const struct dmi_system_id disable_broken_read_transmit_power[] = {
349 {
350 .matches = {
351 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
352 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
353 },
354 },
355 {
356 .matches = {
357 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
358 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
359 },
360 },
361 {
362 .matches = {
363 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
364 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
365 },
366 },
367 {
368 .matches = {
369 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
370 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
371 },
372 },
373 {
374 .matches = {
375 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
376 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
377 },
378 },
379 {
380 .matches = {
381 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
382 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
383 },
384 },
385 {
386 .matches = {
387 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
388 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
389 },
390 },
391 { }
392};
393
394static int btbcm_read_info(struct hci_dev *hdev)
395{
396 struct sk_buff *skb;
397
398 /* Read Verbose Config Version Info */
399 skb = btbcm_read_verbose_config(hdev);
400 if (IS_ERR(skb))
401 return PTR_ERR(skb);
402
403 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
404 kfree_skb(skb);
405
406 return 0;
407}
408
409static int btbcm_print_controller_features(struct hci_dev *hdev)
410{
411 struct sk_buff *skb;
412
413 /* Read Controller Features */
414 skb = btbcm_read_controller_features(hdev);
415 if (IS_ERR(skb))
416 return PTR_ERR(skb);
417
418 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
419 kfree_skb(skb);
420
421 /* Read DMI and disable broken Read LE Min/Max Tx Power */
422 if (dmi_first_match(disable_broken_read_transmit_power))
423 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
424
425 return 0;
426}
427
428static int btbcm_print_local_name(struct hci_dev *hdev)
429{
430 struct sk_buff *skb;
431
432 /* Read Local Name */
433 skb = btbcm_read_local_name(hdev);
434 if (IS_ERR(skb))
435 return PTR_ERR(skb);
436
437 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
438 kfree_skb(skb);
439
440 return 0;
441}
442
443struct bcm_subver_table {
444 u16 subver;
445 const char *name;
446};
447
448static const struct bcm_subver_table bcm_uart_subver_table[] = {
449 { 0x1111, "BCM4362A2" }, /* 000.017.017 */
450 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
451 { 0x410d, "BCM4334B0" }, /* 002.001.013 */
452 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
453 { 0x4204, "BCM2076B1" }, /* 002.002.004 */
454 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
455 { 0x4606, "BCM4324B5" }, /* 002.006.006 */
456 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
457 { 0x610c, "BCM4354" }, /* 003.001.012 */
458 { 0x2122, "BCM4343A0" }, /* 001.001.034 */
459 { 0x2209, "BCM43430A1" }, /* 001.002.009 */
460 { 0x6119, "BCM4345C0" }, /* 003.001.025 */
461 { 0x6606, "BCM4345C5" }, /* 003.006.006 */
462 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
463 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
464 { 0x420d, "BCM4349B1" }, /* 002.002.013 */
465 { 0x420e, "BCM4349B1" }, /* 002.002.014 */
466 { 0x4217, "BCM4329B1" }, /* 002.002.023 */
467 { 0x6106, "BCM4359C0" }, /* 003.001.006 */
468 { 0x4106, "BCM4335A0" }, /* 002.001.006 */
469 { 0x410c, "BCM43430B0" }, /* 002.001.012 */
470 { 0x2119, "BCM4373A0" }, /* 001.001.025 */
471 { }
472};
473
474static const struct bcm_subver_table bcm_usb_subver_table[] = {
475 { 0x2105, "BCM20703A1" }, /* 001.001.005 */
476 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
477 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
478 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
479 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
480 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
481 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
482 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
483 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
484 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
485 { 0x610c, "BCM4354" }, /* 003.001.012 */
486 { 0x6607, "BCM4350C5" }, /* 003.006.007 */
487 { }
488};
489
490/*
491 * This currently only looks up the device tree board appendix,
492 * but can be expanded to other mechanisms.
493 */
494static const char *btbcm_get_board_name(struct device *dev)
495{
496#ifdef CONFIG_OF
497 struct device_node *root;
498 char *board_type;
499 const char *tmp;
500 int len;
501 int i;
502
503 root = of_find_node_by_path("/");
504 if (!root)
505 return NULL;
506
507 if (of_property_read_string_index(root, "compatible", 0, &tmp))
508 return NULL;
509
510 /* get rid of any '/' in the compatible string */
511 len = strlen(tmp) + 1;
512 board_type = devm_kzalloc(dev, len, GFP_KERNEL);
513 strscpy(board_type, tmp, len);
514 for (i = 0; i < board_type[i]; i++) {
515 if (board_type[i] == '/')
516 board_type[i] = '-';
517 }
518 of_node_put(root);
519
520 return board_type;
521#else
522 return NULL;
523#endif
524}
525
526int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
527{
528 u16 subver, rev, pid, vid;
529 struct sk_buff *skb;
530 struct hci_rp_read_local_version *ver;
531 const struct bcm_subver_table *bcm_subver_table;
532 const char *hw_name = NULL;
533 const char *board_name;
534 char postfix[16] = "";
535 int fw_name_count = 0;
536 bcm_fw_name *fw_name;
537 const struct firmware *fw;
538 int i, err;
539
540 board_name = btbcm_get_board_name(&hdev->dev);
541
542 /* Reset */
543 err = btbcm_reset(hdev);
544 if (err)
545 return err;
546
547 /* Read Local Version Info */
548 skb = btbcm_read_local_version(hdev);
549 if (IS_ERR(skb))
550 return PTR_ERR(skb);
551
552 ver = (struct hci_rp_read_local_version *)skb->data;
553 rev = le16_to_cpu(ver->hci_rev);
554 subver = le16_to_cpu(ver->lmp_subver);
555 kfree_skb(skb);
556
557 /* Read controller information */
558 if (!(*fw_load_done)) {
559 err = btbcm_read_info(hdev);
560 if (err)
561 return err;
562 }
563
564 if (!use_autobaud_mode) {
565 err = btbcm_print_controller_features(hdev);
566 if (err)
567 return err;
568
569 err = btbcm_print_local_name(hdev);
570 if (err)
571 return err;
572 }
573
574 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
575 bcm_uart_subver_table;
576
577 for (i = 0; bcm_subver_table[i].name; i++) {
578 if (subver == bcm_subver_table[i].subver) {
579 hw_name = bcm_subver_table[i].name;
580 break;
581 }
582 }
583
584 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
585 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
586 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
587
588 if (*fw_load_done)
589 return 0;
590
591 if (hdev->bus == HCI_USB) {
592 /* Read USB Product Info */
593 skb = btbcm_read_usb_product(hdev);
594 if (IS_ERR(skb))
595 return PTR_ERR(skb);
596
597 vid = get_unaligned_le16(skb->data + 1);
598 pid = get_unaligned_le16(skb->data + 3);
599 kfree_skb(skb);
600
601 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
602 }
603
604 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
605 if (!fw_name)
606 return -ENOMEM;
607
608 if (hw_name) {
609 if (board_name) {
610 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
611 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
612 fw_name_count++;
613 }
614 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
615 "brcm/%s%s.hcd", hw_name, postfix);
616 fw_name_count++;
617 }
618
619 if (board_name) {
620 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
621 "brcm/BCM%s.%s.hcd", postfix, board_name);
622 fw_name_count++;
623 }
624 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
625 "brcm/BCM%s.hcd", postfix);
626 fw_name_count++;
627
628 for (i = 0; i < fw_name_count; i++) {
629 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
630 if (err == 0) {
631 bt_dev_info(hdev, "%s '%s' Patch",
632 hw_name ? hw_name : "BCM", fw_name[i]);
633 *fw_load_done = true;
634 break;
635 }
636 }
637
638 if (*fw_load_done) {
639 err = btbcm_patchram(hdev, fw);
640 if (err)
641 bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
642
643 release_firmware(fw);
644 } else {
645 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
646 for (i = 0; i < fw_name_count; i++)
647 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
648 }
649
650 kfree(fw_name);
651 return 0;
652}
653EXPORT_SYMBOL_GPL(btbcm_initialize);
654
655int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
656{
657 int err;
658
659 /* Re-initialize if necessary */
660 if (*fw_load_done) {
661 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
662 if (err)
663 return err;
664 }
665
666 btbcm_check_bdaddr(hdev);
667
668 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
669
670 return 0;
671}
672EXPORT_SYMBOL_GPL(btbcm_finalize);
673
674int btbcm_setup_patchram(struct hci_dev *hdev)
675{
676 bool fw_load_done = false;
677 bool use_autobaud_mode = false;
678 int err;
679
680 /* Initialize */
681 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
682 if (err)
683 return err;
684
685 /* Re-initialize after loading Patch */
686 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
687}
688EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
689
690int btbcm_setup_apple(struct hci_dev *hdev)
691{
692 struct sk_buff *skb;
693 int err;
694
695 /* Reset */
696 err = btbcm_reset(hdev);
697 if (err)
698 return err;
699
700 /* Read Verbose Config Version Info */
701 skb = btbcm_read_verbose_config(hdev);
702 if (!IS_ERR(skb)) {
703 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
704 skb->data[1], get_unaligned_le16(skb->data + 5));
705 kfree_skb(skb);
706 }
707
708 /* Read USB Product Info */
709 skb = btbcm_read_usb_product(hdev);
710 if (!IS_ERR(skb)) {
711 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
712 get_unaligned_le16(skb->data + 1),
713 get_unaligned_le16(skb->data + 3));
714 kfree_skb(skb);
715 }
716
717 /* Read Controller Features */
718 skb = btbcm_read_controller_features(hdev);
719 if (!IS_ERR(skb)) {
720 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
721 kfree_skb(skb);
722 }
723
724 /* Read Local Name */
725 skb = btbcm_read_local_name(hdev);
726 if (!IS_ERR(skb)) {
727 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
728 kfree_skb(skb);
729 }
730
731 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
732
733 return 0;
734}
735EXPORT_SYMBOL_GPL(btbcm_setup_apple);
736
737MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
738MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
739MODULE_VERSION(VERSION);
740MODULE_LICENSE("GPL");
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 <asm/unaligned.h>
15
16#include <net/bluetooth/bluetooth.h>
17#include <net/bluetooth/hci_core.h>
18
19#include "btbcm.h"
20
21#define VERSION "0.1"
22
23#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
24#define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}})
25#define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}})
26#define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}})
27#define BDADDR_BCM43430A1 (&(bdaddr_t) {{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa}})
28#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
29#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
30#define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
31#define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
32#define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
33
34#define BCM_FW_NAME_LEN 64
35#define BCM_FW_NAME_COUNT_MAX 4
36/* For kmalloc-ing the fw-name array instead of putting it on the stack */
37typedef char bcm_fw_name[BCM_FW_NAME_LEN];
38
39#ifdef CONFIG_EFI
40static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
41{
42 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
43 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
44 bdaddr_t efi_bdaddr, bdaddr;
45 efi_status_t status;
46 unsigned long len;
47 int ret;
48
49 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
50 return -EOPNOTSUPP;
51
52 len = sizeof(efi_bdaddr);
53 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
54 if (status != EFI_SUCCESS)
55 return -ENXIO;
56
57 if (len != sizeof(efi_bdaddr))
58 return -EIO;
59
60 baswap(&bdaddr, &efi_bdaddr);
61
62 ret = btbcm_set_bdaddr(hdev, &bdaddr);
63 if (ret)
64 return ret;
65
66 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
67 return 0;
68}
69#else
70static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
71{
72 return -EOPNOTSUPP;
73}
74#endif
75
76int btbcm_check_bdaddr(struct hci_dev *hdev)
77{
78 struct hci_rp_read_bd_addr *bda;
79 struct sk_buff *skb;
80
81 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
82 HCI_INIT_TIMEOUT);
83 if (IS_ERR(skb)) {
84 int err = PTR_ERR(skb);
85
86 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
87 return err;
88 }
89
90 if (skb->len != sizeof(*bda)) {
91 bt_dev_err(hdev, "BCM: Device address length mismatch");
92 kfree_skb(skb);
93 return -EIO;
94 }
95
96 bda = (struct hci_rp_read_bd_addr *)skb->data;
97
98 /* Check if the address indicates a controller with either an
99 * invalid or default address. In both cases the device needs
100 * to be marked as not having a valid address.
101 *
102 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
103 * with no configured address.
104 *
105 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
106 * with no configured address.
107 *
108 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
109 * with no configured address.
110 *
111 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
112 * with waiting for configuration state.
113 *
114 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
115 * with waiting for configuration state.
116 *
117 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
118 * with no configured address.
119 *
120 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller
121 * with no configured address.
122 */
123 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
124 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
125 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
126 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
127 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
128 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
129 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
130 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
131 !bacmp(&bda->bdaddr, BDADDR_BCM43430A1) ||
132 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
133 /* Try falling back to BDADDR EFI variable */
134 if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
135 bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
136 &bda->bdaddr);
137 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
138 }
139 }
140
141 kfree_skb(skb);
142
143 return 0;
144}
145EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
146
147int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
148{
149 struct sk_buff *skb;
150 int err;
151
152 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
153 if (IS_ERR(skb)) {
154 err = PTR_ERR(skb);
155 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
156 return err;
157 }
158 kfree_skb(skb);
159
160 return 0;
161}
162EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
163
164int btbcm_read_pcm_int_params(struct hci_dev *hdev,
165 struct bcm_set_pcm_int_params *params)
166{
167 struct sk_buff *skb;
168 int err = 0;
169
170 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
171 if (IS_ERR(skb)) {
172 err = PTR_ERR(skb);
173 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
174 return err;
175 }
176
177 if (skb->len != 6 || skb->data[0]) {
178 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
179 kfree_skb(skb);
180 return -EIO;
181 }
182
183 if (params)
184 memcpy(params, skb->data + 1, 5);
185
186 kfree_skb(skb);
187
188 return 0;
189}
190EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
191
192int btbcm_write_pcm_int_params(struct hci_dev *hdev,
193 const struct bcm_set_pcm_int_params *params)
194{
195 struct sk_buff *skb;
196 int err;
197
198 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
199 if (IS_ERR(skb)) {
200 err = PTR_ERR(skb);
201 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
202 return err;
203 }
204 kfree_skb(skb);
205
206 return 0;
207}
208EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
209
210int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
211{
212 const struct hci_command_hdr *cmd;
213 const u8 *fw_ptr;
214 size_t fw_size;
215 struct sk_buff *skb;
216 u16 opcode;
217 int err = 0;
218
219 /* Start Download */
220 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
221 if (IS_ERR(skb)) {
222 err = PTR_ERR(skb);
223 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
224 err);
225 goto done;
226 }
227 kfree_skb(skb);
228
229 /* 50 msec delay after Download Minidrv completes */
230 msleep(50);
231
232 fw_ptr = fw->data;
233 fw_size = fw->size;
234
235 while (fw_size >= sizeof(*cmd)) {
236 const u8 *cmd_param;
237
238 cmd = (struct hci_command_hdr *)fw_ptr;
239 fw_ptr += sizeof(*cmd);
240 fw_size -= sizeof(*cmd);
241
242 if (fw_size < cmd->plen) {
243 bt_dev_err(hdev, "BCM: Patch is corrupted");
244 err = -EINVAL;
245 goto done;
246 }
247
248 cmd_param = fw_ptr;
249 fw_ptr += cmd->plen;
250 fw_size -= cmd->plen;
251
252 opcode = le16_to_cpu(cmd->opcode);
253
254 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
255 HCI_INIT_TIMEOUT);
256 if (IS_ERR(skb)) {
257 err = PTR_ERR(skb);
258 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
259 opcode, err);
260 goto done;
261 }
262 kfree_skb(skb);
263 }
264
265 /* 250 msec delay after Launch Ram completes */
266 msleep(250);
267
268done:
269 return err;
270}
271EXPORT_SYMBOL(btbcm_patchram);
272
273static int btbcm_reset(struct hci_dev *hdev)
274{
275 struct sk_buff *skb;
276
277 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
278 if (IS_ERR(skb)) {
279 int err = PTR_ERR(skb);
280
281 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
282 return err;
283 }
284 kfree_skb(skb);
285
286 /* 100 msec delay for module to complete reset process */
287 msleep(100);
288
289 return 0;
290}
291
292static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
293{
294 struct sk_buff *skb;
295
296 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
297 HCI_INIT_TIMEOUT);
298 if (IS_ERR(skb)) {
299 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
300 PTR_ERR(skb));
301 return skb;
302 }
303
304 if (skb->len != sizeof(struct hci_rp_read_local_name)) {
305 bt_dev_err(hdev, "BCM: Local name length mismatch");
306 kfree_skb(skb);
307 return ERR_PTR(-EIO);
308 }
309
310 return skb;
311}
312
313static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
314{
315 struct sk_buff *skb;
316
317 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
318 HCI_INIT_TIMEOUT);
319 if (IS_ERR(skb)) {
320 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
321 PTR_ERR(skb));
322 return skb;
323 }
324
325 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
326 bt_dev_err(hdev, "BCM: Local version length mismatch");
327 kfree_skb(skb);
328 return ERR_PTR(-EIO);
329 }
330
331 return skb;
332}
333
334static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
335{
336 struct sk_buff *skb;
337
338 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
339 if (IS_ERR(skb)) {
340 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
341 PTR_ERR(skb));
342 return skb;
343 }
344
345 if (skb->len != 7) {
346 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
347 kfree_skb(skb);
348 return ERR_PTR(-EIO);
349 }
350
351 return skb;
352}
353
354static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
355{
356 struct sk_buff *skb;
357
358 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
359 if (IS_ERR(skb)) {
360 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
361 PTR_ERR(skb));
362 return skb;
363 }
364
365 if (skb->len != 9) {
366 bt_dev_err(hdev, "BCM: Controller features length mismatch");
367 kfree_skb(skb);
368 return ERR_PTR(-EIO);
369 }
370
371 return skb;
372}
373
374static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
375{
376 struct sk_buff *skb;
377
378 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
379 if (IS_ERR(skb)) {
380 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
381 PTR_ERR(skb));
382 return skb;
383 }
384
385 if (skb->len != 5) {
386 bt_dev_err(hdev, "BCM: USB product length mismatch");
387 kfree_skb(skb);
388 return ERR_PTR(-EIO);
389 }
390
391 return skb;
392}
393
394static const struct dmi_system_id disable_broken_read_transmit_power[] = {
395 {
396 .matches = {
397 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
398 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
399 },
400 },
401 {
402 .matches = {
403 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
404 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
405 },
406 },
407 {
408 .matches = {
409 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
410 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
411 },
412 },
413 {
414 .matches = {
415 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
416 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
417 },
418 },
419 {
420 .matches = {
421 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
422 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
423 },
424 },
425 {
426 .matches = {
427 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
428 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
429 },
430 },
431 {
432 .matches = {
433 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
434 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
435 },
436 },
437 { }
438};
439
440static int btbcm_read_info(struct hci_dev *hdev)
441{
442 struct sk_buff *skb;
443
444 /* Read Verbose Config Version Info */
445 skb = btbcm_read_verbose_config(hdev);
446 if (IS_ERR(skb))
447 return PTR_ERR(skb);
448
449 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
450 kfree_skb(skb);
451
452 return 0;
453}
454
455static int btbcm_print_controller_features(struct hci_dev *hdev)
456{
457 struct sk_buff *skb;
458
459 /* Read Controller Features */
460 skb = btbcm_read_controller_features(hdev);
461 if (IS_ERR(skb))
462 return PTR_ERR(skb);
463
464 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
465 kfree_skb(skb);
466
467 /* Read DMI and disable broken Read LE Min/Max Tx Power */
468 if (dmi_first_match(disable_broken_read_transmit_power))
469 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
470
471 return 0;
472}
473
474static int btbcm_print_local_name(struct hci_dev *hdev)
475{
476 struct sk_buff *skb;
477
478 /* Read Local Name */
479 skb = btbcm_read_local_name(hdev);
480 if (IS_ERR(skb))
481 return PTR_ERR(skb);
482
483 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
484 kfree_skb(skb);
485
486 return 0;
487}
488
489struct bcm_subver_table {
490 u16 subver;
491 const char *name;
492};
493
494static const struct bcm_subver_table bcm_uart_subver_table[] = {
495 { 0x1111, "BCM4362A2" }, /* 000.017.017 */
496 { 0x4103, "BCM4330B1" }, /* 002.001.003 */
497 { 0x410d, "BCM4334B0" }, /* 002.001.013 */
498 { 0x410e, "BCM43341B0" }, /* 002.001.014 */
499 { 0x4204, "BCM2076B1" }, /* 002.002.004 */
500 { 0x4406, "BCM4324B3" }, /* 002.004.006 */
501 { 0x4606, "BCM4324B5" }, /* 002.006.006 */
502 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
503 { 0x610c, "BCM4354" }, /* 003.001.012 */
504 { 0x2122, "BCM4343A0" }, /* 001.001.034 */
505 { 0x2209, "BCM43430A1" }, /* 001.002.009 */
506 { 0x6119, "BCM4345C0" }, /* 003.001.025 */
507 { 0x6606, "BCM4345C5" }, /* 003.006.006 */
508 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
509 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
510 { 0x420d, "BCM4349B1" }, /* 002.002.013 */
511 { 0x420e, "BCM4349B1" }, /* 002.002.014 */
512 { 0x4217, "BCM4329B1" }, /* 002.002.023 */
513 { 0x6106, "BCM4359C0" }, /* 003.001.006 */
514 { 0x4106, "BCM4335A0" }, /* 002.001.006 */
515 { 0x410c, "BCM43430B0" }, /* 002.001.012 */
516 { 0x2119, "BCM4373A0" }, /* 001.001.025 */
517 { }
518};
519
520static const struct bcm_subver_table bcm_usb_subver_table[] = {
521 { 0x2105, "BCM20703A1" }, /* 001.001.005 */
522 { 0x210b, "BCM43142A0" }, /* 001.001.011 */
523 { 0x2112, "BCM4314A0" }, /* 001.001.018 */
524 { 0x2118, "BCM20702A0" }, /* 001.001.024 */
525 { 0x2126, "BCM4335A0" }, /* 001.001.038 */
526 { 0x220e, "BCM20702A1" }, /* 001.002.014 */
527 { 0x230f, "BCM4356A2" }, /* 001.003.015 */
528 { 0x4106, "BCM4335B0" }, /* 002.001.006 */
529 { 0x410e, "BCM20702B0" }, /* 002.001.014 */
530 { 0x6109, "BCM4335C0" }, /* 003.001.009 */
531 { 0x610c, "BCM4354" }, /* 003.001.012 */
532 { 0x6607, "BCM4350C5" }, /* 003.006.007 */
533 { }
534};
535
536/*
537 * This currently only looks up the device tree board appendix,
538 * but can be expanded to other mechanisms.
539 */
540static const char *btbcm_get_board_name(struct device *dev)
541{
542#ifdef CONFIG_OF
543 struct device_node *root;
544 char *board_type;
545 const char *tmp;
546 int len;
547 int i;
548
549 root = of_find_node_by_path("/");
550 if (!root)
551 return NULL;
552
553 if (of_property_read_string_index(root, "compatible", 0, &tmp))
554 return NULL;
555
556 /* get rid of any '/' in the compatible string */
557 len = strlen(tmp) + 1;
558 board_type = devm_kzalloc(dev, len, GFP_KERNEL);
559 strscpy(board_type, tmp, len);
560 for (i = 0; i < len; i++) {
561 if (board_type[i] == '/')
562 board_type[i] = '-';
563 }
564 of_node_put(root);
565
566 return board_type;
567#else
568 return NULL;
569#endif
570}
571
572int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
573{
574 u16 subver, rev, pid, vid;
575 struct sk_buff *skb;
576 struct hci_rp_read_local_version *ver;
577 const struct bcm_subver_table *bcm_subver_table;
578 const char *hw_name = NULL;
579 const char *board_name;
580 char postfix[16] = "";
581 int fw_name_count = 0;
582 bcm_fw_name *fw_name;
583 const struct firmware *fw;
584 int i, err;
585
586 board_name = btbcm_get_board_name(&hdev->dev);
587
588 /* Reset */
589 err = btbcm_reset(hdev);
590 if (err)
591 return err;
592
593 /* Read Local Version Info */
594 skb = btbcm_read_local_version(hdev);
595 if (IS_ERR(skb))
596 return PTR_ERR(skb);
597
598 ver = (struct hci_rp_read_local_version *)skb->data;
599 rev = le16_to_cpu(ver->hci_rev);
600 subver = le16_to_cpu(ver->lmp_subver);
601 kfree_skb(skb);
602
603 /* Read controller information */
604 if (!(*fw_load_done)) {
605 err = btbcm_read_info(hdev);
606 if (err)
607 return err;
608 }
609
610 if (!use_autobaud_mode) {
611 err = btbcm_print_controller_features(hdev);
612 if (err)
613 return err;
614
615 err = btbcm_print_local_name(hdev);
616 if (err)
617 return err;
618 }
619
620 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
621 bcm_uart_subver_table;
622
623 for (i = 0; bcm_subver_table[i].name; i++) {
624 if (subver == bcm_subver_table[i].subver) {
625 hw_name = bcm_subver_table[i].name;
626 break;
627 }
628 }
629
630 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
631 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
632 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
633
634 if (*fw_load_done)
635 return 0;
636
637 if (hdev->bus == HCI_USB) {
638 /* Read USB Product Info */
639 skb = btbcm_read_usb_product(hdev);
640 if (IS_ERR(skb))
641 return PTR_ERR(skb);
642
643 vid = get_unaligned_le16(skb->data + 1);
644 pid = get_unaligned_le16(skb->data + 3);
645 kfree_skb(skb);
646
647 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
648 }
649
650 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
651 if (!fw_name)
652 return -ENOMEM;
653
654 if (hw_name) {
655 if (board_name) {
656 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
657 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
658 fw_name_count++;
659 }
660 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
661 "brcm/%s%s.hcd", hw_name, postfix);
662 fw_name_count++;
663 }
664
665 if (board_name) {
666 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
667 "brcm/BCM%s.%s.hcd", postfix, board_name);
668 fw_name_count++;
669 }
670 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
671 "brcm/BCM%s.hcd", postfix);
672 fw_name_count++;
673
674 for (i = 0; i < fw_name_count; i++) {
675 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
676 if (err == 0) {
677 bt_dev_info(hdev, "%s '%s' Patch",
678 hw_name ? hw_name : "BCM", fw_name[i]);
679 *fw_load_done = true;
680 break;
681 }
682 }
683
684 if (*fw_load_done) {
685 err = btbcm_patchram(hdev, fw);
686 if (err)
687 bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
688
689 release_firmware(fw);
690 } else {
691 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
692 for (i = 0; i < fw_name_count; i++)
693 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
694 }
695
696 kfree(fw_name);
697 return 0;
698}
699EXPORT_SYMBOL_GPL(btbcm_initialize);
700
701int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
702{
703 int err;
704
705 /* Re-initialize if necessary */
706 if (*fw_load_done) {
707 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
708 if (err)
709 return err;
710 }
711
712 btbcm_check_bdaddr(hdev);
713
714 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
715
716 return 0;
717}
718EXPORT_SYMBOL_GPL(btbcm_finalize);
719
720int btbcm_setup_patchram(struct hci_dev *hdev)
721{
722 bool fw_load_done = false;
723 bool use_autobaud_mode = false;
724 int err;
725
726 /* Initialize */
727 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
728 if (err)
729 return err;
730
731 /* Re-initialize after loading Patch */
732 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
733}
734EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
735
736int btbcm_setup_apple(struct hci_dev *hdev)
737{
738 struct sk_buff *skb;
739 int err;
740
741 /* Reset */
742 err = btbcm_reset(hdev);
743 if (err)
744 return err;
745
746 /* Read Verbose Config Version Info */
747 skb = btbcm_read_verbose_config(hdev);
748 if (!IS_ERR(skb)) {
749 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
750 skb->data[1], get_unaligned_le16(skb->data + 5));
751 kfree_skb(skb);
752 }
753
754 /* Read USB Product Info */
755 skb = btbcm_read_usb_product(hdev);
756 if (!IS_ERR(skb)) {
757 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
758 get_unaligned_le16(skb->data + 1),
759 get_unaligned_le16(skb->data + 3));
760 kfree_skb(skb);
761 }
762
763 /* Read Controller Features */
764 skb = btbcm_read_controller_features(hdev);
765 if (!IS_ERR(skb)) {
766 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
767 kfree_skb(skb);
768 }
769
770 /* Read Local Name */
771 skb = btbcm_read_local_name(hdev);
772 if (!IS_ERR(skb)) {
773 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
774 kfree_skb(skb);
775 }
776
777 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
778
779 return 0;
780}
781EXPORT_SYMBOL_GPL(btbcm_setup_apple);
782
783MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
784MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
785MODULE_VERSION(VERSION);
786MODULE_LICENSE("GPL");