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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
62
63
64
65
66
67
68
69
70
71
72
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
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
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
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" },
271 { 0x410e, "BCM43341B0" },
272 { 0x4406, "BCM4324B3" },
273 { 0x610c, "BCM4354" },
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
286 err = btbcm_reset(hdev);
287 if (err)
288 return err;
289
290
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
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
341 err = btbcm_reset(hdev);
342 if (err)
343 return err;
344
345
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" },
372 { 0x2112, "BCM4314A0" },
373 { 0x2118, "BCM20702A0" },
374 { 0x2126, "BCM4335A0" },
375 { 0x220e, "BCM20702A1" },
376 { 0x230f, "BCM4354A2" },
377 { 0x4106, "BCM4335B0" },
378 { 0x410e, "BCM20702B0" },
379 { 0x6109, "BCM4335C0" },
380 { 0x610c, "BCM4354" },
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
395 err = btbcm_reset(hdev);
396 if (err)
397 return err;
398
399
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
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
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
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
478 err = btbcm_reset(hdev);
479 if (err)
480 return err;
481
482
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
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
519 err = btbcm_reset(hdev);
520 if (err)
521 return err;
522
523
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
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
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");
557
