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[thirdparty/kernel/stable.git] / drivers / bluetooth / btrtl.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Bluetooth support for Realtek devices
4 *
5 * Copyright (C) 2015 Endless Mobile, Inc.
6 */
7
8 #include <linux/module.h>
9 #include <linux/firmware.h>
10 #include <asm/unaligned.h>
11 #include <linux/usb.h>
12
13 #include <net/bluetooth/bluetooth.h>
14 #include <net/bluetooth/hci_core.h>
15
16 #include "btrtl.h"
17
18 #define VERSION "0.1"
19
20 #define RTL_CHIP_8723CS_CG 3
21 #define RTL_CHIP_8723CS_VF 4
22 #define RTL_CHIP_8723CS_XX 5
23 #define RTL_EPATCH_SIGNATURE "Realtech"
24 #define RTL_EPATCH_SIGNATURE_V2 "RTBTCore"
25 #define RTL_ROM_LMP_8703B 0x8703
26 #define RTL_ROM_LMP_8723A 0x1200
27 #define RTL_ROM_LMP_8723B 0x8723
28 #define RTL_ROM_LMP_8821A 0x8821
29 #define RTL_ROM_LMP_8761A 0x8761
30 #define RTL_ROM_LMP_8822B 0x8822
31 #define RTL_ROM_LMP_8852A 0x8852
32 #define RTL_ROM_LMP_8851B 0x8851
33 #define RTL_CONFIG_MAGIC 0x8723ab55
34
35 #define RTL_VSC_OP_COREDUMP 0xfcff
36
37 #define IC_MATCH_FL_LMPSUBV (1 << 0)
38 #define IC_MATCH_FL_HCIREV (1 << 1)
39 #define IC_MATCH_FL_HCIVER (1 << 2)
40 #define IC_MATCH_FL_HCIBUS (1 << 3)
41 #define IC_MATCH_FL_CHIP_TYPE (1 << 4)
42 #define IC_INFO(lmps, hcir, hciv, bus) \
43 .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \
44 IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \
45 .lmp_subver = (lmps), \
46 .hci_rev = (hcir), \
47 .hci_ver = (hciv), \
48 .hci_bus = (bus)
49
50 #define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}})
51 #define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}})
52 #define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}})
53
54 #define RTL_PATCH_SNIPPETS 0x01
55 #define RTL_PATCH_DUMMY_HEADER 0x02
56 #define RTL_PATCH_SECURITY_HEADER 0x03
57
58 enum btrtl_chip_id {
59 CHIP_ID_8723A,
60 CHIP_ID_8723B,
61 CHIP_ID_8821A,
62 CHIP_ID_8761A,
63 CHIP_ID_8822B = 8,
64 CHIP_ID_8723D,
65 CHIP_ID_8821C,
66 CHIP_ID_8822C = 13,
67 CHIP_ID_8761B,
68 CHIP_ID_8852A = 18,
69 CHIP_ID_8852B = 20,
70 CHIP_ID_8852C = 25,
71 CHIP_ID_8851B = 36,
72 };
73
74 struct id_table {
75 __u16 match_flags;
76 __u16 lmp_subver;
77 __u16 hci_rev;
78 __u8 hci_ver;
79 __u8 hci_bus;
80 __u8 chip_type;
81 bool config_needed;
82 bool has_rom_version;
83 bool has_msft_ext;
84 char *fw_name;
85 char *cfg_name;
86 char *hw_info;
87 };
88
89 struct btrtl_device_info {
90 const struct id_table *ic_info;
91 u8 rom_version;
92 u8 *fw_data;
93 int fw_len;
94 u8 *cfg_data;
95 int cfg_len;
96 bool drop_fw;
97 int project_id;
98 u8 key_id;
99 struct list_head patch_subsecs;
100 };
101
102 static const struct id_table ic_id_table[] = {
103 /* 8723A */
104 { IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB),
105 .config_needed = false,
106 .has_rom_version = false,
107 .fw_name = "rtl_bt/rtl8723a_fw",
108 .cfg_name = NULL,
109 .hw_info = "rtl8723au" },
110
111 /* 8723BS */
112 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART),
113 .config_needed = true,
114 .has_rom_version = true,
115 .fw_name = "rtl_bt/rtl8723bs_fw",
116 .cfg_name = "rtl_bt/rtl8723bs_config",
117 .hw_info = "rtl8723bs" },
118
119 /* 8723B */
120 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB),
121 .config_needed = false,
122 .has_rom_version = true,
123 .fw_name = "rtl_bt/rtl8723b_fw",
124 .cfg_name = "rtl_bt/rtl8723b_config",
125 .hw_info = "rtl8723bu" },
126
127 /* 8723CS-CG */
128 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
129 IC_MATCH_FL_HCIBUS,
130 .lmp_subver = RTL_ROM_LMP_8703B,
131 .chip_type = RTL_CHIP_8723CS_CG,
132 .hci_bus = HCI_UART,
133 .config_needed = true,
134 .has_rom_version = true,
135 .fw_name = "rtl_bt/rtl8723cs_cg_fw",
136 .cfg_name = "rtl_bt/rtl8723cs_cg_config",
137 .hw_info = "rtl8723cs-cg" },
138
139 /* 8723CS-VF */
140 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
141 IC_MATCH_FL_HCIBUS,
142 .lmp_subver = RTL_ROM_LMP_8703B,
143 .chip_type = RTL_CHIP_8723CS_VF,
144 .hci_bus = HCI_UART,
145 .config_needed = true,
146 .has_rom_version = true,
147 .fw_name = "rtl_bt/rtl8723cs_vf_fw",
148 .cfg_name = "rtl_bt/rtl8723cs_vf_config",
149 .hw_info = "rtl8723cs-vf" },
150
151 /* 8723CS-XX */
152 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE |
153 IC_MATCH_FL_HCIBUS,
154 .lmp_subver = RTL_ROM_LMP_8703B,
155 .chip_type = RTL_CHIP_8723CS_XX,
156 .hci_bus = HCI_UART,
157 .config_needed = true,
158 .has_rom_version = true,
159 .fw_name = "rtl_bt/rtl8723cs_xx_fw",
160 .cfg_name = "rtl_bt/rtl8723cs_xx_config",
161 .hw_info = "rtl8723cs" },
162
163 /* 8723D */
164 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB),
165 .config_needed = true,
166 .has_rom_version = true,
167 .fw_name = "rtl_bt/rtl8723d_fw",
168 .cfg_name = "rtl_bt/rtl8723d_config",
169 .hw_info = "rtl8723du" },
170
171 /* 8723DS */
172 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART),
173 .config_needed = true,
174 .has_rom_version = true,
175 .fw_name = "rtl_bt/rtl8723ds_fw",
176 .cfg_name = "rtl_bt/rtl8723ds_config",
177 .hw_info = "rtl8723ds" },
178
179 /* 8821A */
180 { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB),
181 .config_needed = false,
182 .has_rom_version = true,
183 .fw_name = "rtl_bt/rtl8821a_fw",
184 .cfg_name = "rtl_bt/rtl8821a_config",
185 .hw_info = "rtl8821au" },
186
187 /* 8821C */
188 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB),
189 .config_needed = false,
190 .has_rom_version = true,
191 .has_msft_ext = true,
192 .fw_name = "rtl_bt/rtl8821c_fw",
193 .cfg_name = "rtl_bt/rtl8821c_config",
194 .hw_info = "rtl8821cu" },
195
196 /* 8821CS */
197 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART),
198 .config_needed = true,
199 .has_rom_version = true,
200 .has_msft_ext = true,
201 .fw_name = "rtl_bt/rtl8821cs_fw",
202 .cfg_name = "rtl_bt/rtl8821cs_config",
203 .hw_info = "rtl8821cs" },
204
205 /* 8761A */
206 { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB),
207 .config_needed = false,
208 .has_rom_version = true,
209 .fw_name = "rtl_bt/rtl8761a_fw",
210 .cfg_name = "rtl_bt/rtl8761a_config",
211 .hw_info = "rtl8761au" },
212
213 /* 8761B */
214 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART),
215 .config_needed = false,
216 .has_rom_version = true,
217 .has_msft_ext = true,
218 .fw_name = "rtl_bt/rtl8761b_fw",
219 .cfg_name = "rtl_bt/rtl8761b_config",
220 .hw_info = "rtl8761btv" },
221
222 /* 8761BU */
223 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB),
224 .config_needed = false,
225 .has_rom_version = true,
226 .fw_name = "rtl_bt/rtl8761bu_fw",
227 .cfg_name = "rtl_bt/rtl8761bu_config",
228 .hw_info = "rtl8761bu" },
229
230 /* 8822C with UART interface */
231 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART),
232 .config_needed = true,
233 .has_rom_version = true,
234 .has_msft_ext = true,
235 .fw_name = "rtl_bt/rtl8822cs_fw",
236 .cfg_name = "rtl_bt/rtl8822cs_config",
237 .hw_info = "rtl8822cs" },
238
239 /* 8822C with UART interface */
240 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART),
241 .config_needed = true,
242 .has_rom_version = true,
243 .has_msft_ext = true,
244 .fw_name = "rtl_bt/rtl8822cs_fw",
245 .cfg_name = "rtl_bt/rtl8822cs_config",
246 .hw_info = "rtl8822cs" },
247
248 /* 8822C with USB interface */
249 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB),
250 .config_needed = false,
251 .has_rom_version = true,
252 .has_msft_ext = true,
253 .fw_name = "rtl_bt/rtl8822cu_fw",
254 .cfg_name = "rtl_bt/rtl8822cu_config",
255 .hw_info = "rtl8822cu" },
256
257 /* 8822B */
258 { IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB),
259 .config_needed = true,
260 .has_rom_version = true,
261 .has_msft_ext = true,
262 .fw_name = "rtl_bt/rtl8822b_fw",
263 .cfg_name = "rtl_bt/rtl8822b_config",
264 .hw_info = "rtl8822bu" },
265
266 /* 8852A */
267 { IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB),
268 .config_needed = false,
269 .has_rom_version = true,
270 .has_msft_ext = true,
271 .fw_name = "rtl_bt/rtl8852au_fw",
272 .cfg_name = "rtl_bt/rtl8852au_config",
273 .hw_info = "rtl8852au" },
274
275 /* 8852B with UART interface */
276 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART),
277 .config_needed = true,
278 .has_rom_version = true,
279 .has_msft_ext = true,
280 .fw_name = "rtl_bt/rtl8852bs_fw",
281 .cfg_name = "rtl_bt/rtl8852bs_config",
282 .hw_info = "rtl8852bs" },
283
284 /* 8852B */
285 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB),
286 .config_needed = false,
287 .has_rom_version = true,
288 .has_msft_ext = true,
289 .fw_name = "rtl_bt/rtl8852bu_fw",
290 .cfg_name = "rtl_bt/rtl8852bu_config",
291 .hw_info = "rtl8852bu" },
292
293 /* 8852C */
294 { IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB),
295 .config_needed = false,
296 .has_rom_version = true,
297 .has_msft_ext = true,
298 .fw_name = "rtl_bt/rtl8852cu_fw",
299 .cfg_name = "rtl_bt/rtl8852cu_config",
300 .hw_info = "rtl8852cu" },
301
302 /* 8851B */
303 { IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB),
304 .config_needed = false,
305 .has_rom_version = true,
306 .has_msft_ext = false,
307 .fw_name = "rtl_bt/rtl8851bu_fw",
308 .cfg_name = "rtl_bt/rtl8851bu_config",
309 .hw_info = "rtl8851bu" },
310 };
311
312 static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev,
313 u8 hci_ver, u8 hci_bus,
314 u8 chip_type)
315 {
316 int i;
317
318 for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) {
319 if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) &&
320 (ic_id_table[i].lmp_subver != lmp_subver))
321 continue;
322 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) &&
323 (ic_id_table[i].hci_rev != hci_rev))
324 continue;
325 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) &&
326 (ic_id_table[i].hci_ver != hci_ver))
327 continue;
328 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) &&
329 (ic_id_table[i].hci_bus != hci_bus))
330 continue;
331 if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) &&
332 (ic_id_table[i].chip_type != chip_type))
333 continue;
334
335 break;
336 }
337 if (i >= ARRAY_SIZE(ic_id_table))
338 return NULL;
339
340 return &ic_id_table[i];
341 }
342
343 static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev)
344 {
345 struct sk_buff *skb;
346
347 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
348 HCI_INIT_TIMEOUT);
349 if (IS_ERR(skb)) {
350 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)",
351 PTR_ERR(skb));
352 return skb;
353 }
354
355 if (skb->len != sizeof(struct hci_rp_read_local_version)) {
356 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch");
357 kfree_skb(skb);
358 return ERR_PTR(-EIO);
359 }
360
361 return skb;
362 }
363
364 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version)
365 {
366 struct rtl_rom_version_evt *rom_version;
367 struct sk_buff *skb;
368
369 /* Read RTL ROM version command */
370 skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT);
371 if (IS_ERR(skb)) {
372 rtl_dev_err(hdev, "Read ROM version failed (%ld)",
373 PTR_ERR(skb));
374 return PTR_ERR(skb);
375 }
376
377 if (skb->len != sizeof(*rom_version)) {
378 rtl_dev_err(hdev, "version event length mismatch");
379 kfree_skb(skb);
380 return -EIO;
381 }
382
383 rom_version = (struct rtl_rom_version_evt *)skb->data;
384 rtl_dev_info(hdev, "rom_version status=%x version=%x",
385 rom_version->status, rom_version->version);
386
387 *version = rom_version->version;
388
389 kfree_skb(skb);
390 return 0;
391 }
392
393 static int btrtl_vendor_read_reg16(struct hci_dev *hdev,
394 struct rtl_vendor_cmd *cmd, u8 *rp)
395 {
396 struct sk_buff *skb;
397 int err = 0;
398
399 skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd,
400 HCI_INIT_TIMEOUT);
401 if (IS_ERR(skb)) {
402 err = PTR_ERR(skb);
403 rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err);
404 return err;
405 }
406
407 if (skb->len != 3 || skb->data[0]) {
408 bt_dev_err(hdev, "RTL: Read reg16 length mismatch");
409 kfree_skb(skb);
410 return -EIO;
411 }
412
413 if (rp)
414 memcpy(rp, skb->data + 1, 2);
415
416 kfree_skb(skb);
417
418 return 0;
419 }
420
421 static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len)
422 {
423 void *data = iov->data;
424
425 if (iov->len < len)
426 return NULL;
427
428 iov->data += len;
429 iov->len -= len;
430
431 return data;
432 }
433
434 static void btrtl_insert_ordered_subsec(struct rtl_subsection *node,
435 struct btrtl_device_info *btrtl_dev)
436 {
437 struct list_head *pos;
438 struct list_head *next;
439 struct rtl_subsection *subsec;
440
441 list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) {
442 subsec = list_entry(pos, struct rtl_subsection, list);
443 if (subsec->prio >= node->prio)
444 break;
445 }
446 __list_add(&node->list, pos->prev, pos);
447 }
448
449 static int btrtl_parse_section(struct hci_dev *hdev,
450 struct btrtl_device_info *btrtl_dev, u32 opcode,
451 u8 *data, u32 len)
452 {
453 struct rtl_section_hdr *hdr;
454 struct rtl_subsection *subsec;
455 struct rtl_common_subsec *common_subsec;
456 struct rtl_sec_hdr *sec_hdr;
457 int i;
458 u8 *ptr;
459 u16 num_subsecs;
460 u32 subsec_len;
461 int rc = 0;
462 struct rtl_iovec iov = {
463 .data = data,
464 .len = len,
465 };
466
467 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
468 if (!hdr)
469 return -EINVAL;
470 num_subsecs = le16_to_cpu(hdr->num);
471
472 for (i = 0; i < num_subsecs; i++) {
473 common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec));
474 if (!common_subsec)
475 break;
476 subsec_len = le32_to_cpu(common_subsec->len);
477
478 rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x",
479 common_subsec->eco, subsec_len);
480
481 ptr = rtl_iov_pull_data(&iov, subsec_len);
482 if (!ptr)
483 break;
484
485 if (common_subsec->eco != btrtl_dev->rom_version + 1)
486 continue;
487
488 switch (opcode) {
489 case RTL_PATCH_SECURITY_HEADER:
490 sec_hdr = (void *)common_subsec;
491 if (sec_hdr->key_id != btrtl_dev->key_id)
492 continue;
493 break;
494 }
495
496 subsec = kzalloc(sizeof(*subsec), GFP_KERNEL);
497 if (!subsec)
498 return -ENOMEM;
499 subsec->opcode = opcode;
500 subsec->prio = common_subsec->prio;
501 subsec->len = subsec_len;
502 subsec->data = ptr;
503 btrtl_insert_ordered_subsec(subsec, btrtl_dev);
504 rc += subsec_len;
505 }
506
507 return rc;
508 }
509
510 static int rtlbt_parse_firmware_v2(struct hci_dev *hdev,
511 struct btrtl_device_info *btrtl_dev,
512 unsigned char **_buf)
513 {
514 struct rtl_epatch_header_v2 *hdr;
515 int rc;
516 u8 reg_val[2];
517 u8 key_id;
518 u32 num_sections;
519 struct rtl_section *section;
520 struct rtl_subsection *entry, *tmp;
521 u32 section_len;
522 u32 opcode;
523 int len = 0;
524 int i;
525 u8 *ptr;
526 struct rtl_iovec iov = {
527 .data = btrtl_dev->fw_data,
528 .len = btrtl_dev->fw_len - 7, /* Cut the tail */
529 };
530
531 rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val);
532 if (rc < 0)
533 return -EIO;
534 key_id = reg_val[0];
535
536 rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id);
537
538 btrtl_dev->key_id = key_id;
539
540 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr));
541 if (!hdr)
542 return -EINVAL;
543 num_sections = le32_to_cpu(hdr->num_sections);
544
545 rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version),
546 *((u32 *)(hdr->fw_version + 4)));
547
548 for (i = 0; i < num_sections; i++) {
549 section = rtl_iov_pull_data(&iov, sizeof(*section));
550 if (!section)
551 break;
552 section_len = le32_to_cpu(section->len);
553 opcode = le32_to_cpu(section->opcode);
554
555 rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode);
556
557 ptr = rtl_iov_pull_data(&iov, section_len);
558 if (!ptr)
559 break;
560
561 switch (opcode) {
562 case RTL_PATCH_SNIPPETS:
563 rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
564 ptr, section_len);
565 break;
566 case RTL_PATCH_SECURITY_HEADER:
567 /* If key_id from chip is zero, ignore all security
568 * headers.
569 */
570 if (!key_id)
571 break;
572 rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
573 ptr, section_len);
574 break;
575 case RTL_PATCH_DUMMY_HEADER:
576 rc = btrtl_parse_section(hdev, btrtl_dev, opcode,
577 ptr, section_len);
578 break;
579 default:
580 rc = 0;
581 break;
582 }
583 if (rc < 0) {
584 rtl_dev_err(hdev, "RTL: Parse section (%u) err %d",
585 opcode, rc);
586 return rc;
587 }
588 len += rc;
589 }
590
591 if (!len)
592 return -ENODATA;
593
594 /* Allocate mem and copy all found subsecs. */
595 ptr = kvmalloc(len, GFP_KERNEL);
596 if (!ptr)
597 return -ENOMEM;
598
599 len = 0;
600 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) {
601 rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x",
602 entry->opcode, entry->data, entry->len);
603 memcpy(ptr + len, entry->data, entry->len);
604 len += entry->len;
605 }
606
607 if (!len)
608 return -EPERM;
609
610 *_buf = ptr;
611 return len;
612 }
613
614 static int rtlbt_parse_firmware(struct hci_dev *hdev,
615 struct btrtl_device_info *btrtl_dev,
616 unsigned char **_buf)
617 {
618 static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 };
619 struct btrealtek_data *coredump_info = hci_get_priv(hdev);
620 struct rtl_epatch_header *epatch_info;
621 unsigned char *buf;
622 int i, len;
623 size_t min_size;
624 u8 opcode, length, data;
625 int project_id = -1;
626 const unsigned char *fwptr, *chip_id_base;
627 const unsigned char *patch_length_base, *patch_offset_base;
628 u32 patch_offset = 0;
629 u16 patch_length, num_patches;
630 static const struct {
631 __u16 lmp_subver;
632 __u8 id;
633 } project_id_to_lmp_subver[] = {
634 { RTL_ROM_LMP_8723A, 0 },
635 { RTL_ROM_LMP_8723B, 1 },
636 { RTL_ROM_LMP_8821A, 2 },
637 { RTL_ROM_LMP_8761A, 3 },
638 { RTL_ROM_LMP_8703B, 7 },
639 { RTL_ROM_LMP_8822B, 8 },
640 { RTL_ROM_LMP_8723B, 9 }, /* 8723D */
641 { RTL_ROM_LMP_8821A, 10 }, /* 8821C */
642 { RTL_ROM_LMP_8822B, 13 }, /* 8822C */
643 { RTL_ROM_LMP_8761A, 14 }, /* 8761B */
644 { RTL_ROM_LMP_8852A, 18 }, /* 8852A */
645 { RTL_ROM_LMP_8852A, 20 }, /* 8852B */
646 { RTL_ROM_LMP_8852A, 25 }, /* 8852C */
647 { RTL_ROM_LMP_8851B, 36 }, /* 8851B */
648 };
649
650 if (btrtl_dev->fw_len <= 8)
651 return -EINVAL;
652
653 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8))
654 min_size = sizeof(struct rtl_epatch_header) +
655 sizeof(extension_sig) + 3;
656 else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
657 min_size = sizeof(struct rtl_epatch_header_v2) +
658 sizeof(extension_sig) + 3;
659 else
660 return -EINVAL;
661
662 if (btrtl_dev->fw_len < min_size)
663 return -EINVAL;
664
665 fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig);
666 if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) {
667 rtl_dev_err(hdev, "extension section signature mismatch");
668 return -EINVAL;
669 }
670
671 /* Loop from the end of the firmware parsing instructions, until
672 * we find an instruction that identifies the "project ID" for the
673 * hardware supported by this firwmare file.
674 * Once we have that, we double-check that project_id is suitable
675 * for the hardware we are working with.
676 */
677 while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) {
678 opcode = *--fwptr;
679 length = *--fwptr;
680 data = *--fwptr;
681
682 BT_DBG("check op=%x len=%x data=%x", opcode, length, data);
683
684 if (opcode == 0xff) /* EOF */
685 break;
686
687 if (length == 0) {
688 rtl_dev_err(hdev, "found instruction with length 0");
689 return -EINVAL;
690 }
691
692 if (opcode == 0 && length == 1) {
693 project_id = data;
694 break;
695 }
696
697 fwptr -= length;
698 }
699
700 if (project_id < 0) {
701 rtl_dev_err(hdev, "failed to find version instruction");
702 return -EINVAL;
703 }
704
705 /* Find project_id in table */
706 for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) {
707 if (project_id == project_id_to_lmp_subver[i].id) {
708 btrtl_dev->project_id = project_id;
709 break;
710 }
711 }
712
713 if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) {
714 rtl_dev_err(hdev, "unknown project id %d", project_id);
715 return -EINVAL;
716 }
717
718 if (btrtl_dev->ic_info->lmp_subver !=
719 project_id_to_lmp_subver[i].lmp_subver) {
720 rtl_dev_err(hdev, "firmware is for %x but this is a %x",
721 project_id_to_lmp_subver[i].lmp_subver,
722 btrtl_dev->ic_info->lmp_subver);
723 return -EINVAL;
724 }
725
726 if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) {
727 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8))
728 return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf);
729 rtl_dev_err(hdev, "bad EPATCH signature");
730 return -EINVAL;
731 }
732
733 epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data;
734 num_patches = le16_to_cpu(epatch_info->num_patches);
735
736 BT_DBG("fw_version=%x, num_patches=%d",
737 le32_to_cpu(epatch_info->fw_version), num_patches);
738 coredump_info->rtl_dump.fw_version = le32_to_cpu(epatch_info->fw_version);
739
740 /* After the rtl_epatch_header there is a funky patch metadata section.
741 * Assuming 2 patches, the layout is:
742 * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2
743 *
744 * Find the right patch for this chip.
745 */
746 min_size += 8 * num_patches;
747 if (btrtl_dev->fw_len < min_size)
748 return -EINVAL;
749
750 chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header);
751 patch_length_base = chip_id_base + (sizeof(u16) * num_patches);
752 patch_offset_base = patch_length_base + (sizeof(u16) * num_patches);
753 for (i = 0; i < num_patches; i++) {
754 u16 chip_id = get_unaligned_le16(chip_id_base +
755 (i * sizeof(u16)));
756 if (chip_id == btrtl_dev->rom_version + 1) {
757 patch_length = get_unaligned_le16(patch_length_base +
758 (i * sizeof(u16)));
759 patch_offset = get_unaligned_le32(patch_offset_base +
760 (i * sizeof(u32)));
761 break;
762 }
763 }
764
765 if (!patch_offset) {
766 rtl_dev_err(hdev, "didn't find patch for chip id %d",
767 btrtl_dev->rom_version);
768 return -EINVAL;
769 }
770
771 BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i);
772 min_size = patch_offset + patch_length;
773 if (btrtl_dev->fw_len < min_size)
774 return -EINVAL;
775
776 /* Copy the firmware into a new buffer and write the version at
777 * the end.
778 */
779 len = patch_length;
780 buf = kvmalloc(patch_length, GFP_KERNEL);
781 if (!buf)
782 return -ENOMEM;
783
784 memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4);
785 memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4);
786
787 *_buf = buf;
788 return len;
789 }
790
791 static int rtl_download_firmware(struct hci_dev *hdev,
792 const unsigned char *data, int fw_len)
793 {
794 struct rtl_download_cmd *dl_cmd;
795 int frag_num = fw_len / RTL_FRAG_LEN + 1;
796 int frag_len = RTL_FRAG_LEN;
797 int ret = 0;
798 int i;
799 int j = 0;
800 struct sk_buff *skb;
801 struct hci_rp_read_local_version *rp;
802
803 dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL);
804 if (!dl_cmd)
805 return -ENOMEM;
806
807 for (i = 0; i < frag_num; i++) {
808 struct sk_buff *skb;
809
810 dl_cmd->index = j++;
811 if (dl_cmd->index == 0x7f)
812 j = 1;
813
814 if (i == (frag_num - 1)) {
815 dl_cmd->index |= 0x80; /* data end */
816 frag_len = fw_len % RTL_FRAG_LEN;
817 }
818 rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i,
819 frag_num, dl_cmd->index);
820 memcpy(dl_cmd->data, data, frag_len);
821
822 /* Send download command */
823 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd,
824 HCI_INIT_TIMEOUT);
825 if (IS_ERR(skb)) {
826 rtl_dev_err(hdev, "download fw command failed (%ld)",
827 PTR_ERR(skb));
828 ret = PTR_ERR(skb);
829 goto out;
830 }
831
832 if (skb->len != sizeof(struct rtl_download_response)) {
833 rtl_dev_err(hdev, "download fw event length mismatch");
834 kfree_skb(skb);
835 ret = -EIO;
836 goto out;
837 }
838
839 kfree_skb(skb);
840 data += RTL_FRAG_LEN;
841 }
842
843 skb = btrtl_read_local_version(hdev);
844 if (IS_ERR(skb)) {
845 ret = PTR_ERR(skb);
846 rtl_dev_err(hdev, "read local version failed");
847 goto out;
848 }
849
850 rp = (struct hci_rp_read_local_version *)skb->data;
851 rtl_dev_info(hdev, "fw version 0x%04x%04x",
852 __le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver));
853 kfree_skb(skb);
854
855 out:
856 kfree(dl_cmd);
857 return ret;
858 }
859
860 static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff)
861 {
862 const struct firmware *fw;
863 int ret;
864
865 rtl_dev_info(hdev, "loading %s", name);
866 ret = request_firmware(&fw, name, &hdev->dev);
867 if (ret < 0)
868 return ret;
869 ret = fw->size;
870 *buff = kvmalloc(fw->size, GFP_KERNEL);
871 if (*buff)
872 memcpy(*buff, fw->data, ret);
873 else
874 ret = -ENOMEM;
875
876 release_firmware(fw);
877
878 return ret;
879 }
880
881 static int btrtl_setup_rtl8723a(struct hci_dev *hdev,
882 struct btrtl_device_info *btrtl_dev)
883 {
884 if (btrtl_dev->fw_len < 8)
885 return -EINVAL;
886
887 /* Check that the firmware doesn't have the epatch signature
888 * (which is only for RTL8723B and newer).
889 */
890 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) {
891 rtl_dev_err(hdev, "unexpected EPATCH signature!");
892 return -EINVAL;
893 }
894
895 return rtl_download_firmware(hdev, btrtl_dev->fw_data,
896 btrtl_dev->fw_len);
897 }
898
899 static int btrtl_setup_rtl8723b(struct hci_dev *hdev,
900 struct btrtl_device_info *btrtl_dev)
901 {
902 unsigned char *fw_data = NULL;
903 int ret;
904 u8 *tbuff;
905
906 ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data);
907 if (ret < 0)
908 goto out;
909
910 if (btrtl_dev->cfg_len > 0) {
911 tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL);
912 if (!tbuff) {
913 ret = -ENOMEM;
914 goto out;
915 }
916
917 memcpy(tbuff, fw_data, ret);
918 kvfree(fw_data);
919
920 memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len);
921 ret += btrtl_dev->cfg_len;
922
923 fw_data = tbuff;
924 }
925
926 rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret);
927
928 ret = rtl_download_firmware(hdev, fw_data, ret);
929
930 out:
931 kvfree(fw_data);
932 return ret;
933 }
934
935 static void btrtl_coredump(struct hci_dev *hdev)
936 {
937 static const u8 param[] = { 0x00, 0x00 };
938
939 __hci_cmd_send(hdev, RTL_VSC_OP_COREDUMP, sizeof(param), param);
940 }
941
942 static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb)
943 {
944 struct btrealtek_data *coredump_info = hci_get_priv(hdev);
945 char buf[80];
946
947 if (coredump_info->rtl_dump.controller)
948 snprintf(buf, sizeof(buf), "Controller Name: %s\n",
949 coredump_info->rtl_dump.controller);
950 else
951 snprintf(buf, sizeof(buf), "Controller Name: Unknown\n");
952 skb_put_data(skb, buf, strlen(buf));
953
954 snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n",
955 coredump_info->rtl_dump.fw_version);
956 skb_put_data(skb, buf, strlen(buf));
957
958 snprintf(buf, sizeof(buf), "Driver: %s\n", coredump_info->rtl_dump.driver_name);
959 skb_put_data(skb, buf, strlen(buf));
960
961 snprintf(buf, sizeof(buf), "Vendor: Realtek\n");
962 skb_put_data(skb, buf, strlen(buf));
963 }
964
965 static int btrtl_register_devcoredump_support(struct hci_dev *hdev)
966 {
967 int err;
968
969 err = hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL);
970
971 return err;
972 }
973
974 void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name)
975 {
976 struct btrealtek_data *coredump_info = hci_get_priv(hdev);
977
978 coredump_info->rtl_dump.driver_name = driver_name;
979 }
980 EXPORT_SYMBOL_GPL(btrtl_set_driver_name);
981
982 static bool rtl_has_chip_type(u16 lmp_subver)
983 {
984 switch (lmp_subver) {
985 case RTL_ROM_LMP_8703B:
986 return true;
987 default:
988 break;
989 }
990
991 return false;
992 }
993
994 static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type)
995 {
996 struct rtl_chip_type_evt *chip_type;
997 struct sk_buff *skb;
998 const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0};
999
1000 /* Read RTL chip type command */
1001 skb = __hci_cmd_sync(hdev, 0xfc61, 5, cmd_buf, HCI_INIT_TIMEOUT);
1002 if (IS_ERR(skb)) {
1003 rtl_dev_err(hdev, "Read chip type failed (%ld)",
1004 PTR_ERR(skb));
1005 return PTR_ERR(skb);
1006 }
1007
1008 chip_type = skb_pull_data(skb, sizeof(*chip_type));
1009 if (!chip_type) {
1010 rtl_dev_err(hdev, "RTL chip type event length mismatch");
1011 kfree_skb(skb);
1012 return -EIO;
1013 }
1014
1015 rtl_dev_info(hdev, "chip_type status=%x type=%x",
1016 chip_type->status, chip_type->type);
1017
1018 *type = chip_type->type & 0x0f;
1019
1020 kfree_skb(skb);
1021 return 0;
1022 }
1023
1024 void btrtl_free(struct btrtl_device_info *btrtl_dev)
1025 {
1026 struct rtl_subsection *entry, *tmp;
1027
1028 kvfree(btrtl_dev->fw_data);
1029 kvfree(btrtl_dev->cfg_data);
1030
1031 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) {
1032 list_del(&entry->list);
1033 kfree(entry);
1034 }
1035
1036 kfree(btrtl_dev);
1037 }
1038 EXPORT_SYMBOL_GPL(btrtl_free);
1039
1040 struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev,
1041 const char *postfix)
1042 {
1043 struct btrealtek_data *coredump_info = hci_get_priv(hdev);
1044 struct btrtl_device_info *btrtl_dev;
1045 struct sk_buff *skb;
1046 struct hci_rp_read_local_version *resp;
1047 struct hci_command_hdr *cmd;
1048 char fw_name[40];
1049 char cfg_name[40];
1050 u16 hci_rev, lmp_subver;
1051 u8 hci_ver, lmp_ver, chip_type = 0;
1052 int ret;
1053 u8 reg_val[2];
1054
1055 btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL);
1056 if (!btrtl_dev) {
1057 ret = -ENOMEM;
1058 goto err_alloc;
1059 }
1060
1061 INIT_LIST_HEAD(&btrtl_dev->patch_subsecs);
1062
1063 check_version:
1064 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val);
1065 if (ret < 0)
1066 goto err_free;
1067 lmp_subver = get_unaligned_le16(reg_val);
1068
1069 if (lmp_subver == RTL_ROM_LMP_8822B) {
1070 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val);
1071 if (ret < 0)
1072 goto err_free;
1073 hci_rev = get_unaligned_le16(reg_val);
1074
1075 /* 8822E */
1076 if (hci_rev == 0x000e) {
1077 hci_ver = 0x0c;
1078 lmp_ver = 0x0c;
1079 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev,
1080 hci_ver, hdev->bus,
1081 chip_type);
1082 goto next;
1083 }
1084 }
1085
1086 skb = btrtl_read_local_version(hdev);
1087 if (IS_ERR(skb)) {
1088 ret = PTR_ERR(skb);
1089 goto err_free;
1090 }
1091
1092 resp = (struct hci_rp_read_local_version *)skb->data;
1093
1094 hci_ver = resp->hci_ver;
1095 hci_rev = le16_to_cpu(resp->hci_rev);
1096 lmp_ver = resp->lmp_ver;
1097 lmp_subver = le16_to_cpu(resp->lmp_subver);
1098
1099 kfree_skb(skb);
1100
1101 if (rtl_has_chip_type(lmp_subver)) {
1102 ret = rtl_read_chip_type(hdev, &chip_type);
1103 if (ret)
1104 goto err_free;
1105 }
1106
1107 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver,
1108 hdev->bus, chip_type);
1109
1110 next:
1111 rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x",
1112 hci_ver, hci_rev,
1113 lmp_ver, lmp_subver);
1114
1115 if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw)
1116 btrtl_dev->drop_fw = true;
1117 else
1118 btrtl_dev->drop_fw = false;
1119
1120 if (btrtl_dev->drop_fw) {
1121 skb = bt_skb_alloc(sizeof(*cmd), GFP_KERNEL);
1122 if (!skb)
1123 goto err_free;
1124
1125 cmd = skb_put(skb, HCI_COMMAND_HDR_SIZE);
1126 cmd->opcode = cpu_to_le16(0xfc66);
1127 cmd->plen = 0;
1128
1129 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT;
1130
1131 ret = hdev->send(hdev, skb);
1132 if (ret < 0) {
1133 bt_dev_err(hdev, "sending frame failed (%d)", ret);
1134 kfree_skb(skb);
1135 goto err_free;
1136 }
1137
1138 /* Ensure the above vendor command is sent to controller and
1139 * process has done.
1140 */
1141 msleep(200);
1142
1143 goto check_version;
1144 }
1145
1146 if (!btrtl_dev->ic_info) {
1147 rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x",
1148 lmp_subver, hci_rev, hci_ver);
1149 return btrtl_dev;
1150 }
1151
1152 if (btrtl_dev->ic_info->has_rom_version) {
1153 ret = rtl_read_rom_version(hdev, &btrtl_dev->rom_version);
1154 if (ret)
1155 goto err_free;
1156 }
1157
1158 if (!btrtl_dev->ic_info->fw_name) {
1159 ret = -ENOMEM;
1160 goto err_free;
1161 }
1162
1163 btrtl_dev->fw_len = -EIO;
1164 if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) {
1165 snprintf(fw_name, sizeof(fw_name), "%s_v2.bin",
1166 btrtl_dev->ic_info->fw_name);
1167 btrtl_dev->fw_len = rtl_load_file(hdev, fw_name,
1168 &btrtl_dev->fw_data);
1169 }
1170
1171 if (btrtl_dev->fw_len < 0) {
1172 snprintf(fw_name, sizeof(fw_name), "%s.bin",
1173 btrtl_dev->ic_info->fw_name);
1174 btrtl_dev->fw_len = rtl_load_file(hdev, fw_name,
1175 &btrtl_dev->fw_data);
1176 }
1177
1178 if (btrtl_dev->fw_len < 0) {
1179 rtl_dev_err(hdev, "firmware file %s not found",
1180 btrtl_dev->ic_info->fw_name);
1181 ret = btrtl_dev->fw_len;
1182 goto err_free;
1183 }
1184
1185 if (btrtl_dev->ic_info->cfg_name) {
1186 if (postfix) {
1187 snprintf(cfg_name, sizeof(cfg_name), "%s-%s.bin",
1188 btrtl_dev->ic_info->cfg_name, postfix);
1189 } else {
1190 snprintf(cfg_name, sizeof(cfg_name), "%s.bin",
1191 btrtl_dev->ic_info->cfg_name);
1192 }
1193 btrtl_dev->cfg_len = rtl_load_file(hdev, cfg_name,
1194 &btrtl_dev->cfg_data);
1195 if (btrtl_dev->ic_info->config_needed &&
1196 btrtl_dev->cfg_len <= 0) {
1197 rtl_dev_err(hdev, "mandatory config file %s not found",
1198 btrtl_dev->ic_info->cfg_name);
1199 ret = btrtl_dev->cfg_len;
1200 goto err_free;
1201 }
1202 }
1203
1204 /* The following chips supports the Microsoft vendor extension,
1205 * therefore set the corresponding VsMsftOpCode.
1206 */
1207 if (btrtl_dev->ic_info->has_msft_ext)
1208 hci_set_msft_opcode(hdev, 0xFCF0);
1209
1210 if (btrtl_dev->ic_info)
1211 coredump_info->rtl_dump.controller = btrtl_dev->ic_info->hw_info;
1212
1213 return btrtl_dev;
1214
1215 err_free:
1216 btrtl_free(btrtl_dev);
1217 err_alloc:
1218 return ERR_PTR(ret);
1219 }
1220 EXPORT_SYMBOL_GPL(btrtl_initialize);
1221
1222 int btrtl_download_firmware(struct hci_dev *hdev,
1223 struct btrtl_device_info *btrtl_dev)
1224 {
1225 int err = 0;
1226
1227 /* Match a set of subver values that correspond to stock firmware,
1228 * which is not compatible with standard btusb.
1229 * If matched, upload an alternative firmware that does conform to
1230 * standard btusb. Once that firmware is uploaded, the subver changes
1231 * to a different value.
1232 */
1233 if (!btrtl_dev->ic_info) {
1234 rtl_dev_info(hdev, "assuming no firmware upload needed");
1235 err = 0;
1236 goto done;
1237 }
1238
1239 switch (btrtl_dev->ic_info->lmp_subver) {
1240 case RTL_ROM_LMP_8723A:
1241 err = btrtl_setup_rtl8723a(hdev, btrtl_dev);
1242 break;
1243 case RTL_ROM_LMP_8723B:
1244 case RTL_ROM_LMP_8821A:
1245 case RTL_ROM_LMP_8761A:
1246 case RTL_ROM_LMP_8822B:
1247 case RTL_ROM_LMP_8852A:
1248 case RTL_ROM_LMP_8703B:
1249 case RTL_ROM_LMP_8851B:
1250 err = btrtl_setup_rtl8723b(hdev, btrtl_dev);
1251 break;
1252 default:
1253 rtl_dev_info(hdev, "assuming no firmware upload needed");
1254 break;
1255 }
1256
1257 done:
1258 if (!err)
1259 err = btrtl_register_devcoredump_support(hdev);
1260
1261 return err;
1262 }
1263 EXPORT_SYMBOL_GPL(btrtl_download_firmware);
1264
1265 void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev)
1266 {
1267 /* Enable controller to do both LE scan and BR/EDR inquiry
1268 * simultaneously.
1269 */
1270 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks);
1271
1272 /* Enable central-peripheral role (able to create new connections with
1273 * an existing connection in slave role).
1274 */
1275 /* Enable WBS supported for the specific Realtek devices. */
1276 switch (btrtl_dev->project_id) {
1277 case CHIP_ID_8822C:
1278 case CHIP_ID_8852A:
1279 case CHIP_ID_8852B:
1280 case CHIP_ID_8852C:
1281 case CHIP_ID_8851B:
1282 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks);
1283 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks);
1284
1285 /* RTL8852C needs to transmit mSBC data continuously without
1286 * the zero length of USB packets for the ALT 6 supported chips
1287 */
1288 if (btrtl_dev->project_id == CHIP_ID_8852C)
1289 btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP);
1290
1291 if (btrtl_dev->project_id == CHIP_ID_8852A ||
1292 btrtl_dev->project_id == CHIP_ID_8852C)
1293 set_bit(HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER, &hdev->quirks);
1294
1295 hci_set_aosp_capable(hdev);
1296 break;
1297 default:
1298 rtl_dev_dbg(hdev, "Central-peripheral role not enabled.");
1299 rtl_dev_dbg(hdev, "WBS supported not enabled.");
1300 break;
1301 }
1302
1303 if (!btrtl_dev->ic_info)
1304 return;
1305
1306 switch (btrtl_dev->ic_info->lmp_subver) {
1307 case RTL_ROM_LMP_8703B:
1308 /* 8723CS reports two pages for local ext features,
1309 * but it doesn't support any features from page 2 -
1310 * it either responds with garbage or with error status
1311 */
1312 set_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2,
1313 &hdev->quirks);
1314 break;
1315 default:
1316 break;
1317 }
1318 }
1319 EXPORT_SYMBOL_GPL(btrtl_set_quirks);
1320
1321 int btrtl_setup_realtek(struct hci_dev *hdev)
1322 {
1323 struct btrtl_device_info *btrtl_dev;
1324 int ret;
1325
1326 btrtl_dev = btrtl_initialize(hdev, NULL);
1327 if (IS_ERR(btrtl_dev))
1328 return PTR_ERR(btrtl_dev);
1329
1330 ret = btrtl_download_firmware(hdev, btrtl_dev);
1331
1332 btrtl_set_quirks(hdev, btrtl_dev);
1333
1334 btrtl_free(btrtl_dev);
1335 return ret;
1336 }
1337 EXPORT_SYMBOL_GPL(btrtl_setup_realtek);
1338
1339 int btrtl_shutdown_realtek(struct hci_dev *hdev)
1340 {
1341 struct sk_buff *skb;
1342 int ret;
1343
1344 /* According to the vendor driver, BT must be reset on close to avoid
1345 * firmware crash.
1346 */
1347 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
1348 if (IS_ERR(skb)) {
1349 ret = PTR_ERR(skb);
1350 bt_dev_err(hdev, "HCI reset during shutdown failed");
1351 return ret;
1352 }
1353 kfree_skb(skb);
1354
1355 return 0;
1356 }
1357 EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek);
1358
1359 static unsigned int btrtl_convert_baudrate(u32 device_baudrate)
1360 {
1361 switch (device_baudrate) {
1362 case 0x0252a00a:
1363 return 230400;
1364
1365 case 0x05f75004:
1366 return 921600;
1367
1368 case 0x00005004:
1369 return 1000000;
1370
1371 case 0x04928002:
1372 case 0x01128002:
1373 return 1500000;
1374
1375 case 0x00005002:
1376 return 2000000;
1377
1378 case 0x0000b001:
1379 return 2500000;
1380
1381 case 0x04928001:
1382 return 3000000;
1383
1384 case 0x052a6001:
1385 return 3500000;
1386
1387 case 0x00005001:
1388 return 4000000;
1389
1390 case 0x0252c014:
1391 default:
1392 return 115200;
1393 }
1394 }
1395
1396 int btrtl_get_uart_settings(struct hci_dev *hdev,
1397 struct btrtl_device_info *btrtl_dev,
1398 unsigned int *controller_baudrate,
1399 u32 *device_baudrate, bool *flow_control)
1400 {
1401 struct rtl_vendor_config *config;
1402 struct rtl_vendor_config_entry *entry;
1403 int i, total_data_len;
1404 bool found = false;
1405
1406 total_data_len = btrtl_dev->cfg_len - sizeof(*config);
1407 if (total_data_len <= 0) {
1408 rtl_dev_warn(hdev, "no config loaded");
1409 return -EINVAL;
1410 }
1411
1412 config = (struct rtl_vendor_config *)btrtl_dev->cfg_data;
1413 if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) {
1414 rtl_dev_err(hdev, "invalid config magic");
1415 return -EINVAL;
1416 }
1417
1418 if (total_data_len < le16_to_cpu(config->total_len)) {
1419 rtl_dev_err(hdev, "config is too short");
1420 return -EINVAL;
1421 }
1422
1423 for (i = 0; i < total_data_len; ) {
1424 entry = ((void *)config->entry) + i;
1425
1426 switch (le16_to_cpu(entry->offset)) {
1427 case 0xc:
1428 if (entry->len < sizeof(*device_baudrate)) {
1429 rtl_dev_err(hdev, "invalid UART config entry");
1430 return -EINVAL;
1431 }
1432
1433 *device_baudrate = get_unaligned_le32(entry->data);
1434 *controller_baudrate = btrtl_convert_baudrate(
1435 *device_baudrate);
1436
1437 if (entry->len >= 13)
1438 *flow_control = !!(entry->data[12] & BIT(2));
1439 else
1440 *flow_control = false;
1441
1442 found = true;
1443 break;
1444
1445 default:
1446 rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)",
1447 le16_to_cpu(entry->offset), entry->len);
1448 break;
1449 }
1450
1451 i += sizeof(*entry) + entry->len;
1452 }
1453
1454 if (!found) {
1455 rtl_dev_err(hdev, "no UART config entry found");
1456 return -ENOENT;
1457 }
1458
1459 rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate);
1460 rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate);
1461 rtl_dev_dbg(hdev, "flow control %d", *flow_control);
1462
1463 return 0;
1464 }
1465 EXPORT_SYMBOL_GPL(btrtl_get_uart_settings);
1466
1467 MODULE_AUTHOR("Daniel Drake <drake@endlessm.com>");
1468 MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION);
1469 MODULE_VERSION(VERSION);
1470 MODULE_LICENSE("GPL");
1471 MODULE_FIRMWARE("rtl_bt/rtl8723a_fw.bin");
1472 MODULE_FIRMWARE("rtl_bt/rtl8723b_fw.bin");
1473 MODULE_FIRMWARE("rtl_bt/rtl8723b_config.bin");
1474 MODULE_FIRMWARE("rtl_bt/rtl8723bs_fw.bin");
1475 MODULE_FIRMWARE("rtl_bt/rtl8723bs_config.bin");
1476 MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_fw.bin");
1477 MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_config.bin");
1478 MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_fw.bin");
1479 MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_config.bin");
1480 MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_fw.bin");
1481 MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_config.bin");
1482 MODULE_FIRMWARE("rtl_bt/rtl8723d_fw.bin");
1483 MODULE_FIRMWARE("rtl_bt/rtl8723d_config.bin");
1484 MODULE_FIRMWARE("rtl_bt/rtl8723ds_fw.bin");
1485 MODULE_FIRMWARE("rtl_bt/rtl8723ds_config.bin");
1486 MODULE_FIRMWARE("rtl_bt/rtl8761a_fw.bin");
1487 MODULE_FIRMWARE("rtl_bt/rtl8761a_config.bin");
1488 MODULE_FIRMWARE("rtl_bt/rtl8761b_fw.bin");
1489 MODULE_FIRMWARE("rtl_bt/rtl8761b_config.bin");
1490 MODULE_FIRMWARE("rtl_bt/rtl8761bu_fw.bin");
1491 MODULE_FIRMWARE("rtl_bt/rtl8761bu_config.bin");
1492 MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin");
1493 MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin");
1494 MODULE_FIRMWARE("rtl_bt/rtl8821c_fw.bin");
1495 MODULE_FIRMWARE("rtl_bt/rtl8821c_config.bin");
1496 MODULE_FIRMWARE("rtl_bt/rtl8821cs_fw.bin");
1497 MODULE_FIRMWARE("rtl_bt/rtl8821cs_config.bin");
1498 MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin");
1499 MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin");
1500 MODULE_FIRMWARE("rtl_bt/rtl8822cs_fw.bin");
1501 MODULE_FIRMWARE("rtl_bt/rtl8822cs_config.bin");
1502 MODULE_FIRMWARE("rtl_bt/rtl8822cu_fw.bin");
1503 MODULE_FIRMWARE("rtl_bt/rtl8822cu_config.bin");
1504 MODULE_FIRMWARE("rtl_bt/rtl8851bu_fw.bin");
1505 MODULE_FIRMWARE("rtl_bt/rtl8851bu_config.bin");
1506 MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin");
1507 MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin");
1508 MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin");
1509 MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin");
1510 MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin");
1511 MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin");
1512 MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin");
1513 MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin");
1514 MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin");
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git