-
Notifications
You must be signed in to change notification settings - Fork 54.9k
/
Copy pathbtrtl.c
1514 lines (1277 loc) · 37.9 KB
/
btrtl.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Bluetooth support for Realtek devices
*
* Copyright (C) 2015 Endless Mobile, Inc.
*/
#include <linux/module.h>
#include <linux/firmware.h>
#include <asm/unaligned.h>
#include <linux/usb.h>
#include <net/bluetooth/bluetooth.h>
#include <net/bluetooth/hci_core.h>
#include "btrtl.h"
#define VERSION "0.1"
#define RTL_CHIP_8723CS_CG 3
#define RTL_CHIP_8723CS_VF 4
#define RTL_CHIP_8723CS_XX 5
#define RTL_EPATCH_SIGNATURE "Realtech"
#define RTL_EPATCH_SIGNATURE_V2 "RTBTCore"
#define RTL_ROM_LMP_8703B 0x8703
#define RTL_ROM_LMP_8723A 0x1200
#define RTL_ROM_LMP_8723B 0x8723
#define RTL_ROM_LMP_8821A 0x8821
#define RTL_ROM_LMP_8761A 0x8761
#define RTL_ROM_LMP_8822B 0x8822
#define RTL_ROM_LMP_8852A 0x8852
#define RTL_ROM_LMP_8851B 0x8851
#define RTL_CONFIG_MAGIC 0x8723ab55
#define RTL_VSC_OP_COREDUMP 0xfcff
#define IC_MATCH_FL_LMPSUBV (1 << 0)
#define IC_MATCH_FL_HCIREV (1 << 1)
#define IC_MATCH_FL_HCIVER (1 << 2)
#define IC_MATCH_FL_HCIBUS (1 << 3)
#define IC_MATCH_FL_CHIP_TYPE (1 << 4)
#define IC_INFO(lmps, hcir, hciv, bus) \
.match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \
IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \
.lmp_subver = (lmps), \
.hci_rev = (hcir), \
.hci_ver = (hciv), \
.hci_bus = (bus)
#define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}})
#define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}})
#define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}})
#define RTL_PATCH_SNIPPETS 0x01
#define RTL_PATCH_DUMMY_HEADER 0x02
#define RTL_PATCH_SECURITY_HEADER 0x03
enum btrtl_chip_id {
CHIP_ID_8723A,
CHIP_ID_8723B,
CHIP_ID_8821A,
CHIP_ID_8761A,
CHIP_ID_8822B = 8,
CHIP_ID_8723D,
CHIP_ID_8821C,
CHIP_ID_8822C = 13,
CHIP_ID_8761B,
CHIP_ID_8852A = 18,
CHIP_ID_8852B = 20,
CHIP_ID_8852C = 25,
CHIP_ID_8851B = 36,
};
struct id_table {
__u16 match_flags;
__u16 lmp_subver;
__u16 hci_rev;
__u8 hci_ver;
__u8 hci_bus;
__u8 chip_type;
bool config_needed;
bool has_rom_version;
bool has_msft_ext;
char *fw_name;
char *cfg_name;
char *hw_info;
};
struct btrtl_device_info {
const struct id_table *ic_info;
u8 rom_version;
u8 *fw_data;
int fw_len;
u8 *cfg_data;
int cfg_len;
bool drop_fw;
int project_id;
u8 key_id;
struct list_head patch_subsecs;
};
static const struct id_table ic_id_table[] = {
/* 8723A */
{ IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB),
.config_needed = false,
.has_rom_version = false,
.fw_name = "rtl_bt/rtl8723a_fw",
.cfg_name = NULL,
.hw_info = "rtl8723au" },
/* 8723BS */
{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723bs_fw",
.cfg_name = "rtl_bt/rtl8723bs_config",
.hw_info = "rtl8723bs" },
/* 8723B */
{ IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723b_fw",
.cfg_name = "rtl_bt/rtl8723b_config",
.hw_info = "rtl8723bu" },
/* 8723CS-CG */
{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
IC_MATCH_FL_HCIBUS,
.lmp_subver = RTL_ROM_LMP_8703B,
.chip_type = RTL_CHIP_8723CS_CG,
.hci_bus = HCI_UART,
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_cg_fw",
.cfg_name = "rtl_bt/rtl8723cs_cg_config",
.hw_info = "rtl8723cs-cg" },
/* 8723CS-VF */
{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
IC_MATCH_FL_HCIBUS,
.lmp_subver = RTL_ROM_LMP_8703B,
.chip_type = RTL_CHIP_8723CS_VF,
.hci_bus = HCI_UART,
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_vf_fw",
.cfg_name = "rtl_bt/rtl8723cs_vf_config",
.hw_info = "rtl8723cs-vf" },
/* 8723CS-XX */
{ .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
IC_MATCH_FL_HCIBUS,
.lmp_subver = RTL_ROM_LMP_8703B,
.chip_type = RTL_CHIP_8723CS_XX,
.hci_bus = HCI_UART,
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723cs_xx_fw",
.cfg_name = "rtl_bt/rtl8723cs_xx_config",
.hw_info = "rtl8723cs" },
/* 8723D */
{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB),
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723d_fw",
.cfg_name = "rtl_bt/rtl8723d_config",
.hw_info = "rtl8723du" },
/* 8723DS */
{ IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8723ds_fw",
.cfg_name = "rtl_bt/rtl8723ds_config",
.hw_info = "rtl8723ds" },
/* 8821A */
{ IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8821a_fw",
.cfg_name = "rtl_bt/rtl8821a_config",
.hw_info = "rtl8821au" },
/* 8821C */
{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8821c_fw",
.cfg_name = "rtl_bt/rtl8821c_config",
.hw_info = "rtl8821cu" },
/* 8821CS */
{ IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8821cs_fw",
.cfg_name = "rtl_bt/rtl8821cs_config",
.hw_info = "rtl8821cs" },
/* 8761A */
{ IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8761a_fw",
.cfg_name = "rtl_bt/rtl8761a_config",
.hw_info = "rtl8761au" },
/* 8761B */
{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8761b_fw",
.cfg_name = "rtl_bt/rtl8761b_config",
.hw_info = "rtl8761btv" },
/* 8761BU */
{ IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.fw_name = "rtl_bt/rtl8761bu_fw",
.cfg_name = "rtl_bt/rtl8761bu_config",
.hw_info = "rtl8761bu" },
/* 8822C with UART interface */
{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cs_fw",
.cfg_name = "rtl_bt/rtl8822cs_config",
.hw_info = "rtl8822cs" },
/* 8822C with UART interface */
{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cs_fw",
.cfg_name = "rtl_bt/rtl8822cs_config",
.hw_info = "rtl8822cs" },
/* 8822C with USB interface */
{ IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822cu_fw",
.cfg_name = "rtl_bt/rtl8822cu_config",
.hw_info = "rtl8822cu" },
/* 8822B */
{ IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB),
.config_needed = true,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8822b_fw",
.cfg_name = "rtl_bt/rtl8822b_config",
.hw_info = "rtl8822bu" },
/* 8852A */
{ IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852au_fw",
.cfg_name = "rtl_bt/rtl8852au_config",
.hw_info = "rtl8852au" },
/* 8852B with UART interface */
{ IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART),
.config_needed = true,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852bs_fw",
.cfg_name = "rtl_bt/rtl8852bs_config",
.hw_info = "rtl8852bs" },
/* 8852B */
{ IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852bu_fw",
.cfg_name = "rtl_bt/rtl8852bu_config",
.hw_info = "rtl8852bu" },
/* 8852C */
{ IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = true,
.fw_name = "rtl_bt/rtl8852cu_fw",
.cfg_name = "rtl_bt/rtl8852cu_config",
.hw_info = "rtl8852cu" },
/* 8851B */
{ IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB),
.config_needed = false,
.has_rom_version = true,
.has_msft_ext = false,
.fw_name = "rtl_bt/rtl8851bu_fw",
.cfg_name = "rtl_bt/rtl8851bu_config",
.hw_info = "rtl8851bu" },
};
static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
u8 hci_ver, u8 hci_bus,
u8 chip_type)
{
int i;
for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) {
if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) &&
(ic_id_table[i].lmp_subver != lmp_subver))
continue;
if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) &&
(ic_id_table[i].hci_rev != hci_rev))
continue;
if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) &&
(ic_id_table[i].hci_ver != hci_ver))
continue;
if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) &&
(ic_id_table[i].hci_bus != hci_bus))
continue;
if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) &&
(ic_id_table[i].chip_type != chip_type))
continue;
break;
}
if (i >= ARRAY_SIZE(ic_id_table))
return NULL;
return &ic_id_table[i];
}
static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)",
PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_version)) {
rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch");
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
{
struct rtl_rom_version_evt *rom_version;
struct sk_buff *skb;
/* Read RTL ROM version command */
skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
rtl_dev_err(hdev, "Read ROM version failed (%ld)",
PTR_ERR(skb));
return PTR_ERR(skb);
}
if (skb->len != sizeof(*rom_version)) {
rtl_dev_err(hdev, "version event length mismatch");
kfree_skb(skb);
return -EIO;
}
rom_version = (struct rtl_rom_version_evt *)skb->data;
rtl_dev_info(hdev, "rom_version status=%x version=%x",
rom_version->status, rom_version->version);
*version = rom_version->version;
kfree_skb(skb);
return 0;
}
static int btrtl_vendor_read_reg16(struct hci_dev *hdev,
struct rtl_vendor_cmd *cmd, u8 *rp)
{
struct sk_buff *skb;
int err = 0;
skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
err = PTR_ERR(skb);
rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err);
return err;
}
if (skb->len != 3 || skb->data[0]) {
bt_dev_err(hdev, "RTL: Read reg16 length mismatch");
kfree_skb(skb);
return -EIO;
}
if (rp)
memcpy(rp, skb->data + 1, 2);
kfree_skb(skb);
return 0;
}
static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len)
{
void *data = iov->data;
if (iov->len < len)
return NULL;
iov->data += len;
iov->len -= len;
return data;
}
static void btrtl_insert_ordered_subsec(struct rtl_subsection *node,
struct btrtl_device_info *btrtl_dev)
{
struct list_head *pos;
struct list_head *next;
struct rtl_subsection *subsec;
list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) {
subsec = list_entry(pos, struct rtl_subsection, list);
if (subsec->prio >= node->prio)
break;
}
__list_add(&node->list, pos->prev, pos);
}
static int btrtl_parse_section(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev, u32 opcode,
u8 *data, u32 len)
{
struct rtl_section_hdr *hdr;
struct rtl_subsection *subsec;
struct rtl_common_subsec *common_subsec;
struct rtl_sec_hdr *sec_hdr;
int i;
u8 *ptr;
u16 num_subsecs;
u32 subsec_len;
int rc = 0;
struct rtl_iovec iov = {
.data = data,
.len = len,
};
hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
if (!hdr)
return -EINVAL;
num_subsecs = le16_to_cpu(hdr->num);
for (i = 0; i < num_subsecs; i++) {
common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec));
if (!common_subsec)
break;
subsec_len = le32_to_cpu(common_subsec->len);
rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x",
common_subsec->eco, subsec_len);
ptr = rtl_iov_pull_data(&iov, subsec_len);
if (!ptr)
break;
if (common_subsec->eco != btrtl_dev->rom_version + 1)
continue;
switch (opcode) {
case RTL_PATCH_SECURITY_HEADER:
sec_hdr = (void *)common_subsec;
if (sec_hdr->key_id != btrtl_dev->key_id)
continue;
break;
}
subsec = kzalloc(sizeof(*subsec), GFP_KERNEL);
if (!subsec)
return -ENOMEM;
subsec->opcode = opcode;
subsec->prio = common_subsec->prio;
subsec->len = subsec_len;
subsec->data = ptr;
btrtl_insert_ordered_subsec(subsec, btrtl_dev);
rc += subsec_len;
}
return rc;
}
static int rtlbt_parse_firmware_v2(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev,
unsigned char **_buf)
{
struct rtl_epatch_header_v2 *hdr;
int rc;
u8 reg_val[2];
u8 key_id;
u32 num_sections;
struct rtl_section *section;
struct rtl_subsection *entry, *tmp;
u32 section_len;
u32 opcode;
int len = 0;
int i;
u8 *ptr;
struct rtl_iovec iov = {
.data = btrtl_dev->fw_data,
.len = btrtl_dev->fw_len - 7, /* Cut the tail */
};
rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val);
if (rc < 0)
return -EIO;
key_id = reg_val[0];
rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id);
btrtl_dev->key_id = key_id;
hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
if (!hdr)
return -EINVAL;
num_sections = le32_to_cpu(hdr->num_sections);
rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version),
*((u32 *)(hdr->fw_version + 4)));
for (i = 0; i < num_sections; i++) {
section = rtl_iov_pull_data(&iov, sizeof(*section));
if (!section)
break;
section_len = le32_to_cpu(section->len);
opcode = le32_to_cpu(section->opcode);
rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode);
ptr = rtl_iov_pull_data(&iov, section_len);
if (!ptr)
break;
switch (opcode) {
case RTL_PATCH_SNIPPETS:
rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
ptr, section_len);
break;
case RTL_PATCH_SECURITY_HEADER:
/* If key_id from chip is zero, ignore all security
* headers.
*/
if (!key_id)
break;
rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
ptr, section_len);
break;
case RTL_PATCH_DUMMY_HEADER:
rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
ptr, section_len);
break;
default:
rc = 0;
break;
}
if (rc < 0) {
rtl_dev_err(hdev, "RTL: Parse section (%u) err %d",
opcode, rc);
return rc;
}
len += rc;
}
if (!len)
return -ENODATA;
/* Allocate mem and copy all found subsecs. */
ptr = kvmalloc(len, GFP_KERNEL);
if (!ptr)
return -ENOMEM;
len = 0;
list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) {
rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x",
entry->opcode, entry->data, entry->len);
memcpy(ptr + len, entry->data, entry->len);
len += entry->len;
}
if (!len)
return -EPERM;
*_buf = ptr;
return len;
}
static int rtlbt_parse_firmware(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev,
unsigned char **_buf)
{
static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
struct btrealtek_data *coredump_info = hci_get_priv(hdev);
struct rtl_epatch_header *epatch_info;
unsigned char *buf;
int i, len;
size_t min_size;
u8 opcode, length, data;
int project_id = -1;
const unsigned char *fwptr, *chip_id_base;
const unsigned char *patch_length_base, *patch_offset_base;
u32 patch_offset = 0;
u16 patch_length, num_patches;
static const struct {
__u16 lmp_subver;
__u8 id;
} project_id_to_lmp_subver[] = {
{ RTL_ROM_LMP_8723A, 0 },
{ RTL_ROM_LMP_8723B, 1 },
{ RTL_ROM_LMP_8821A, 2 },
{ RTL_ROM_LMP_8761A, 3 },
{ RTL_ROM_LMP_8703B, 7 },
{ RTL_ROM_LMP_8822B, 8 },
{ RTL_ROM_LMP_8723B, 9 }, /* 8723D */
{ RTL_ROM_LMP_8821A, 10 }, /* 8821C */
{ RTL_ROM_LMP_8822B, 13 }, /* 8822C */
{ RTL_ROM_LMP_8761A, 14 }, /* 8761B */
{ RTL_ROM_LMP_8852A, 18 }, /* 8852A */
{ RTL_ROM_LMP_8852A, 20 }, /* 8852B */
{ RTL_ROM_LMP_8852A, 25 }, /* 8852C */
{ RTL_ROM_LMP_8851B, 36 }, /* 8851B */
};
if (btrtl_dev->fw_len <= 8)
return -EINVAL;
if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8))
min_size = sizeof(struct rtl_epatch_header) +
sizeof(extension_sig) + 3;
else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
min_size = sizeof(struct rtl_epatch_header_v2) +
sizeof(extension_sig) + 3;
else
return -EINVAL;
if (btrtl_dev->fw_len < min_size)
return -EINVAL;
fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig);
if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
rtl_dev_err(hdev, "extension section signature mismatch");
return -EINVAL;
}
/* Loop from the end of the firmware parsing instructions, until
* we find an instruction that identifies the "project ID" for the
* hardware supported by this firwmare file.
* Once we have that, we double-check that project_id is suitable
* for the hardware we are working with.
*/
while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) {
opcode = *--fwptr;
length = *--fwptr;
data = *--fwptr;
BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
if (opcode == 0xff) /* EOF */
break;
if (length == 0) {
rtl_dev_err(hdev, "found instruction with length 0");
return -EINVAL;
}
if (opcode == 0 && length == 1) {
project_id = data;
break;
}
fwptr -= length;
}
if (project_id < 0) {
rtl_dev_err(hdev, "failed to find version instruction");
return -EINVAL;
}
/* Find project_id in table */
for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) {
if (project_id == project_id_to_lmp_subver[i].id) {
btrtl_dev->project_id = project_id;
break;
}
}
if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) {
rtl_dev_err(hdev, "unknown project id %d", project_id);
return -EINVAL;
}
if (btrtl_dev->ic_info->lmp_subver !=
project_id_to_lmp_subver[i].lmp_subver) {
rtl_dev_err(hdev, "firmware is for %x but this is a %x",
project_id_to_lmp_subver[i].lmp_subver,
btrtl_dev->ic_info->lmp_subver);
return -EINVAL;
}
if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) {
if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf);
rtl_dev_err(hdev, "bad EPATCH signature");
return -EINVAL;
}
epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
num_patches = le16_to_cpu(epatch_info->num_patches);
BT_DBG("fw_version=%x, num_patches=%d",
le32_to_cpu(epatch_info->fw_version), num_patches);
coredump_info->rtl_dump.fw_version = le32_to_cpu(epatch_info->fw_version);
/* After the rtl_epatch_header there is a funky patch metadata section.
* Assuming 2 patches, the layout is:
* ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
*
* Find the right patch for this chip.
*/
min_size += 8 * num_patches;
if (btrtl_dev->fw_len < min_size)
return -EINVAL;
chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header);
patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
for (i = 0; i < num_patches; i++) {
u16 chip_id = get_unaligned_le16(chip_id_base +
(i * sizeof(u16)));
if (chip_id == btrtl_dev->rom_version + 1) {
patch_length = get_unaligned_le16(patch_length_base +
(i * sizeof(u16)));
patch_offset = get_unaligned_le32(patch_offset_base +
(i * sizeof(u32)));
break;
}
}
if (!patch_offset) {
rtl_dev_err(hdev, "didn't find patch for chip id %d",
btrtl_dev->rom_version);
return -EINVAL;
}
BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
min_size = patch_offset + patch_length;
if (btrtl_dev->fw_len < min_size)
return -EINVAL;
/* Copy the firmware into a new buffer and write the version at
* the end.
*/
len = patch_length;
buf = kvmalloc(patch_length, GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4);
memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
*_buf = buf;
return len;
}
static int rtl_download_firmware(struct hci_dev *hdev,
const unsigned char *data, int fw_len)
{
struct rtl_download_cmd *dl_cmd;
int frag_num = fw_len / RTL_FRAG_LEN + 1;
int frag_len = RTL_FRAG_LEN;
int ret = 0;
int i;
int j = 0;
struct sk_buff *skb;
struct hci_rp_read_local_version *rp;
dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
if (!dl_cmd)
return -ENOMEM;
for (i = 0; i < frag_num; i++) {
struct sk_buff *skb;
dl_cmd->index = j++;
if (dl_cmd->index == 0x7f)
j = 1;
if (i == (frag_num - 1)) {
dl_cmd->index |= 0x80; /* data end */
frag_len = fw_len % RTL_FRAG_LEN;
}
rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i,
frag_num, dl_cmd->index);
memcpy(dl_cmd->data, data, frag_len);
/* Send download command */
skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
rtl_dev_err(hdev, "download fw command failed (%ld)",
PTR_ERR(skb));
ret = PTR_ERR(skb);
goto out;
}
if (skb->len != sizeof(struct rtl_download_response)) {
rtl_dev_err(hdev, "download fw event length mismatch");
kfree_skb(skb);
ret = -EIO;
goto out;
}
kfree_skb(skb);
data += RTL_FRAG_LEN;
}
skb = btrtl_read_local_version(hdev);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
rtl_dev_err(hdev, "read local version failed");
goto out;
}
rp = (struct hci_rp_read_local_version *)skb->data;
rtl_dev_info(hdev, "fw version 0x%04x%04x",
__le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver));
kfree_skb(skb);
out:
kfree(dl_cmd);
return ret;
}
static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff)
{
const struct firmware *fw;
int ret;
rtl_dev_info(hdev, "loading %s", name);
ret = request_firmware(&fw, name, &hdev->dev);
if (ret < 0)
return ret;
ret = fw->size;
*buff = kvmalloc(fw->size, GFP_KERNEL);
if (*buff)
memcpy(*buff, fw->data, ret);
else
ret = -ENOMEM;
release_firmware(fw);
return ret;
}
static int btrtl_setup_rtl8723a(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev)
{
if (btrtl_dev->fw_len < 8)
return -EINVAL;
/* Check that the firmware doesn't have the epatch signature
* (which is only for RTL8723B and newer).
*/
if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) {
rtl_dev_err(hdev, "unexpected EPATCH signature!");
return -EINVAL;
}
return rtl_download_firmware(hdev, btrtl_dev->fw_data,
btrtl_dev->fw_len);
}
static int btrtl_setup_rtl8723b(struct hci_dev *hdev,
struct btrtl_device_info *btrtl_dev)
{
unsigned char *fw_data = NULL;
int ret;
u8 *tbuff;
ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data);
if (ret < 0)
goto out;
if (btrtl_dev->cfg_len > 0) {
tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL);
if (!tbuff) {
ret = -ENOMEM;
goto out;
}
memcpy(tbuff, fw_data, ret);
kvfree(fw_data);
memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len);
ret += btrtl_dev->cfg_len;
fw_data = tbuff;
}
rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret);
ret = rtl_download_firmware(hdev, fw_data, ret);
out:
kvfree(fw_data);
return ret;
}
static void btrtl_coredump(struct hci_dev *hdev)
{
static const u8 param[] = { 0x00, 0x00 };
__hci_cmd_send(hdev, RTL_VSC_OP_COREDUMP, sizeof(param), param);
}
static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb)
{
struct btrealtek_data *coredump_info = hci_get_priv(hdev);
char buf[80];
if (coredump_info->rtl_dump.controller)
snprintf(buf, sizeof(buf), "Controller Name: %s\n",
coredump_info->rtl_dump.controller);
else
snprintf(buf, sizeof(buf), "Controller Name: Unknown\n");
skb_put_data(skb, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n",
coredump_info->rtl_dump.fw_version);
skb_put_data(skb, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Driver: %s\n", coredump_info->rtl_dump.driver_name);
skb_put_data(skb, buf, strlen(buf));
snprintf(buf, sizeof(buf), "Vendor: Realtek\n");
skb_put_data(skb, buf, strlen(buf));
}
static int btrtl_register_devcoredump_support(struct hci_dev *hdev)
{
int err;
err = hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL);
return err;
}
void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name)
{
struct btrealtek_data *coredump_info = hci_get_priv(hdev);
coredump_info->rtl_dump.driver_name = driver_name;
}
EXPORT_SYMBOL_GPL(btrtl_set_driver_name);
static bool rtl_has_chip_type(u16 lmp_subver)
{
switch (lmp_subver) {
case RTL_ROM_LMP_8703B:
return true;
default:
break;
}
return false;
}
static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type)
{
struct rtl_chip_type_evt *chip_type;
struct sk_buff *skb;
const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0};
/* Read RTL chip type command */