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 IC_MATCH_FL_LMPSUBV (1 << 0) 36 #define IC_MATCH_FL_HCIREV (1 << 1) 37 #define IC_MATCH_FL_HCIVER (1 << 2) 38 #define IC_MATCH_FL_HCIBUS (1 << 3) 39 #define IC_MATCH_FL_CHIP_TYPE (1 << 4) 40 #define IC_INFO(lmps, hcir, hciv, bus) \ 41 .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \ 42 IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \ 43 .lmp_subver = (lmps), \ 44 .hci_rev = (hcir), \ 45 .hci_ver = (hciv), \ 46 .hci_bus = (bus) 47 48 #define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}}) 49 #define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}}) 50 #define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0x0D, 0x00, 0xb0}}) 51 52 #define RTL_PATCH_SNIPPETS 0x01 53 #define RTL_PATCH_DUMMY_HEADER 0x02 54 #define RTL_PATCH_SECURITY_HEADER 0x03 55 56 enum btrtl_chip_id { 57 CHIP_ID_8723A, 58 CHIP_ID_8723B, 59 CHIP_ID_8821A, 60 CHIP_ID_8761A, 61 CHIP_ID_8822B = 8, 62 CHIP_ID_8723D, 63 CHIP_ID_8821C, 64 CHIP_ID_8822C = 13, 65 CHIP_ID_8761B, 66 CHIP_ID_8852A = 18, 67 CHIP_ID_8852B = 20, 68 CHIP_ID_8852C = 25, 69 CHIP_ID_8851B = 36, 70 }; 71 72 struct id_table { 73 __u16 match_flags; 74 __u16 lmp_subver; 75 __u16 hci_rev; 76 __u8 hci_ver; 77 __u8 hci_bus; 78 __u8 chip_type; 79 bool config_needed; 80 bool has_rom_version; 81 bool has_msft_ext; 82 char *fw_name; 83 char *cfg_name; 84 }; 85 86 struct btrtl_device_info { 87 const struct id_table *ic_info; 88 u8 rom_version; 89 u8 *fw_data; 90 int fw_len; 91 u8 *cfg_data; 92 int cfg_len; 93 bool drop_fw; 94 int project_id; 95 u8 key_id; 96 struct list_head patch_subsecs; 97 }; 98 99 static const struct id_table ic_id_table[] = { 100 /* 8723A */ 101 { IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB), 102 .config_needed = false, 103 .has_rom_version = false, 104 .fw_name = "rtl_bt/rtl8723a_fw.bin", 105 .cfg_name = NULL }, 106 107 /* 8723BS */ 108 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), 109 .config_needed = true, 110 .has_rom_version = true, 111 .fw_name = "rtl_bt/rtl8723bs_fw.bin", 112 .cfg_name = "rtl_bt/rtl8723bs_config" }, 113 114 /* 8723B */ 115 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), 116 .config_needed = false, 117 .has_rom_version = true, 118 .fw_name = "rtl_bt/rtl8723b_fw.bin", 119 .cfg_name = "rtl_bt/rtl8723b_config" }, 120 121 /* 8723CS-CG */ 122 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | 123 IC_MATCH_FL_HCIBUS, 124 .lmp_subver = RTL_ROM_LMP_8703B, 125 .chip_type = RTL_CHIP_8723CS_CG, 126 .hci_bus = HCI_UART, 127 .config_needed = true, 128 .has_rom_version = true, 129 .fw_name = "rtl_bt/rtl8723cs_cg_fw.bin", 130 .cfg_name = "rtl_bt/rtl8723cs_cg_config" }, 131 132 /* 8723CS-VF */ 133 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | 134 IC_MATCH_FL_HCIBUS, 135 .lmp_subver = RTL_ROM_LMP_8703B, 136 .chip_type = RTL_CHIP_8723CS_VF, 137 .hci_bus = HCI_UART, 138 .config_needed = true, 139 .has_rom_version = true, 140 .fw_name = "rtl_bt/rtl8723cs_vf_fw.bin", 141 .cfg_name = "rtl_bt/rtl8723cs_vf_config" }, 142 143 /* 8723CS-XX */ 144 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | 145 IC_MATCH_FL_HCIBUS, 146 .lmp_subver = RTL_ROM_LMP_8703B, 147 .chip_type = RTL_CHIP_8723CS_XX, 148 .hci_bus = HCI_UART, 149 .config_needed = true, 150 .has_rom_version = true, 151 .fw_name = "rtl_bt/rtl8723cs_xx_fw.bin", 152 .cfg_name = "rtl_bt/rtl8723cs_xx_config" }, 153 154 /* 8723D */ 155 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), 156 .config_needed = true, 157 .has_rom_version = true, 158 .fw_name = "rtl_bt/rtl8723d_fw.bin", 159 .cfg_name = "rtl_bt/rtl8723d_config" }, 160 161 /* 8723DS */ 162 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), 163 .config_needed = true, 164 .has_rom_version = true, 165 .fw_name = "rtl_bt/rtl8723ds_fw.bin", 166 .cfg_name = "rtl_bt/rtl8723ds_config" }, 167 168 /* 8821A */ 169 { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), 170 .config_needed = false, 171 .has_rom_version = true, 172 .fw_name = "rtl_bt/rtl8821a_fw.bin", 173 .cfg_name = "rtl_bt/rtl8821a_config" }, 174 175 /* 8821C */ 176 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB), 177 .config_needed = false, 178 .has_rom_version = true, 179 .has_msft_ext = true, 180 .fw_name = "rtl_bt/rtl8821c_fw.bin", 181 .cfg_name = "rtl_bt/rtl8821c_config" }, 182 183 /* 8821CS */ 184 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART), 185 .config_needed = true, 186 .has_rom_version = true, 187 .has_msft_ext = true, 188 .fw_name = "rtl_bt/rtl8821cs_fw.bin", 189 .cfg_name = "rtl_bt/rtl8821cs_config" }, 190 191 /* 8761A */ 192 { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), 193 .config_needed = false, 194 .has_rom_version = true, 195 .fw_name = "rtl_bt/rtl8761a_fw.bin", 196 .cfg_name = "rtl_bt/rtl8761a_config" }, 197 198 /* 8761B */ 199 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART), 200 .config_needed = false, 201 .has_rom_version = true, 202 .has_msft_ext = true, 203 .fw_name = "rtl_bt/rtl8761b_fw.bin", 204 .cfg_name = "rtl_bt/rtl8761b_config" }, 205 206 /* 8761BU */ 207 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), 208 .config_needed = false, 209 .has_rom_version = true, 210 .fw_name = "rtl_bt/rtl8761bu_fw.bin", 211 .cfg_name = "rtl_bt/rtl8761bu_config" }, 212 213 /* 8822C with UART interface */ 214 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART), 215 .config_needed = true, 216 .has_rom_version = true, 217 .has_msft_ext = true, 218 .fw_name = "rtl_bt/rtl8822cs_fw.bin", 219 .cfg_name = "rtl_bt/rtl8822cs_config" }, 220 221 /* 8822C with UART interface */ 222 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART), 223 .config_needed = true, 224 .has_rom_version = true, 225 .has_msft_ext = true, 226 .fw_name = "rtl_bt/rtl8822cs_fw.bin", 227 .cfg_name = "rtl_bt/rtl8822cs_config" }, 228 229 /* 8822C with USB interface */ 230 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB), 231 .config_needed = false, 232 .has_rom_version = true, 233 .has_msft_ext = true, 234 .fw_name = "rtl_bt/rtl8822cu_fw.bin", 235 .cfg_name = "rtl_bt/rtl8822cu_config" }, 236 237 /* 8822B */ 238 { IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB), 239 .config_needed = true, 240 .has_rom_version = true, 241 .has_msft_ext = true, 242 .fw_name = "rtl_bt/rtl8822b_fw.bin", 243 .cfg_name = "rtl_bt/rtl8822b_config" }, 244 245 /* 8852A */ 246 { IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB), 247 .config_needed = false, 248 .has_rom_version = true, 249 .has_msft_ext = true, 250 .fw_name = "rtl_bt/rtl8852au_fw.bin", 251 .cfg_name = "rtl_bt/rtl8852au_config" }, 252 253 /* 8852B with UART interface */ 254 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART), 255 .config_needed = true, 256 .has_rom_version = true, 257 .has_msft_ext = true, 258 .fw_name = "rtl_bt/rtl8852bs_fw.bin", 259 .cfg_name = "rtl_bt/rtl8852bs_config" }, 260 261 /* 8852B */ 262 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB), 263 .config_needed = false, 264 .has_rom_version = true, 265 .has_msft_ext = true, 266 .fw_name = "rtl_bt/rtl8852bu_fw.bin", 267 .cfg_name = "rtl_bt/rtl8852bu_config" }, 268 269 /* 8852C */ 270 { IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB), 271 .config_needed = false, 272 .has_rom_version = true, 273 .has_msft_ext = true, 274 .fw_name = "rtl_bt/rtl8852cu_fw.bin", 275 .cfg_name = "rtl_bt/rtl8852cu_config" }, 276 277 /* 8851B */ 278 { IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB), 279 .config_needed = false, 280 .has_rom_version = true, 281 .has_msft_ext = false, 282 .fw_name = "rtl_bt/rtl8851bu_fw.bin", 283 .cfg_name = "rtl_bt/rtl8851bu_config" }, 284 }; 285 286 static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev, 287 u8 hci_ver, u8 hci_bus, 288 u8 chip_type) 289 { 290 int i; 291 292 for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) { 293 if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) && 294 (ic_id_table[i].lmp_subver != lmp_subver)) 295 continue; 296 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) && 297 (ic_id_table[i].hci_rev != hci_rev)) 298 continue; 299 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) && 300 (ic_id_table[i].hci_ver != hci_ver)) 301 continue; 302 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) && 303 (ic_id_table[i].hci_bus != hci_bus)) 304 continue; 305 if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) && 306 (ic_id_table[i].chip_type != chip_type)) 307 continue; 308 309 break; 310 } 311 if (i >= ARRAY_SIZE(ic_id_table)) 312 return NULL; 313 314 return &ic_id_table[i]; 315 } 316 317 static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev) 318 { 319 struct sk_buff *skb; 320 321 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 322 HCI_INIT_TIMEOUT); 323 if (IS_ERR(skb)) { 324 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)", 325 PTR_ERR(skb)); 326 return skb; 327 } 328 329 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 330 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch"); 331 kfree_skb(skb); 332 return ERR_PTR(-EIO); 333 } 334 335 return skb; 336 } 337 338 static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version) 339 { 340 struct rtl_rom_version_evt *rom_version; 341 struct sk_buff *skb; 342 343 /* Read RTL ROM version command */ 344 skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); 345 if (IS_ERR(skb)) { 346 rtl_dev_err(hdev, "Read ROM version failed (%ld)", 347 PTR_ERR(skb)); 348 return PTR_ERR(skb); 349 } 350 351 if (skb->len != sizeof(*rom_version)) { 352 rtl_dev_err(hdev, "version event length mismatch"); 353 kfree_skb(skb); 354 return -EIO; 355 } 356 357 rom_version = (struct rtl_rom_version_evt *)skb->data; 358 rtl_dev_info(hdev, "rom_version status=%x version=%x", 359 rom_version->status, rom_version->version); 360 361 *version = rom_version->version; 362 363 kfree_skb(skb); 364 return 0; 365 } 366 367 static int btrtl_vendor_read_reg16(struct hci_dev *hdev, 368 struct rtl_vendor_cmd *cmd, u8 *rp) 369 { 370 struct sk_buff *skb; 371 int err = 0; 372 373 skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd, 374 HCI_INIT_TIMEOUT); 375 if (IS_ERR(skb)) { 376 err = PTR_ERR(skb); 377 rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err); 378 return err; 379 } 380 381 if (skb->len != 3 || skb->data[0]) { 382 bt_dev_err(hdev, "RTL: Read reg16 length mismatch"); 383 kfree_skb(skb); 384 return -EIO; 385 } 386 387 if (rp) 388 memcpy(rp, skb->data + 1, 2); 389 390 kfree_skb(skb); 391 392 return 0; 393 } 394 395 static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len) 396 { 397 void *data = iov->data; 398 399 if (iov->len < len) 400 return NULL; 401 402 iov->data += len; 403 iov->len -= len; 404 405 return data; 406 } 407 408 static void btrtl_insert_ordered_subsec(struct rtl_subsection *node, 409 struct btrtl_device_info *btrtl_dev) 410 { 411 struct list_head *pos; 412 struct list_head *next; 413 struct rtl_subsection *subsec; 414 415 list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) { 416 subsec = list_entry(pos, struct rtl_subsection, list); 417 if (subsec->prio >= node->prio) 418 break; 419 } 420 __list_add(&node->list, pos->prev, pos); 421 } 422 423 static int btrtl_parse_section(struct hci_dev *hdev, 424 struct btrtl_device_info *btrtl_dev, u32 opcode, 425 u8 *data, u32 len) 426 { 427 struct rtl_section_hdr *hdr; 428 struct rtl_subsection *subsec; 429 struct rtl_common_subsec *common_subsec; 430 struct rtl_sec_hdr *sec_hdr; 431 int i; 432 u8 *ptr; 433 u16 num_subsecs; 434 u32 subsec_len; 435 int rc = 0; 436 struct rtl_iovec iov = { 437 .data = data, 438 .len = len, 439 }; 440 441 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); 442 if (!hdr) 443 return -EINVAL; 444 num_subsecs = le16_to_cpu(hdr->num); 445 446 for (i = 0; i < num_subsecs; i++) { 447 common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec)); 448 if (!common_subsec) 449 break; 450 subsec_len = le32_to_cpu(common_subsec->len); 451 452 rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x", 453 common_subsec->eco, subsec_len); 454 455 ptr = rtl_iov_pull_data(&iov, subsec_len); 456 if (!ptr) 457 break; 458 459 if (common_subsec->eco != btrtl_dev->rom_version + 1) 460 continue; 461 462 switch (opcode) { 463 case RTL_PATCH_SECURITY_HEADER: 464 sec_hdr = (void *)common_subsec; 465 if (sec_hdr->key_id != btrtl_dev->key_id) 466 continue; 467 break; 468 } 469 470 subsec = kzalloc(sizeof(*subsec), GFP_KERNEL); 471 if (!subsec) 472 return -ENOMEM; 473 subsec->opcode = opcode; 474 subsec->prio = common_subsec->prio; 475 subsec->len = subsec_len; 476 subsec->data = ptr; 477 btrtl_insert_ordered_subsec(subsec, btrtl_dev); 478 rc += subsec_len; 479 } 480 481 return rc; 482 } 483 484 static int rtlbt_parse_firmware_v2(struct hci_dev *hdev, 485 struct btrtl_device_info *btrtl_dev, 486 unsigned char **_buf) 487 { 488 struct rtl_epatch_header_v2 *hdr; 489 int rc; 490 u8 reg_val[2]; 491 u8 key_id; 492 u32 num_sections; 493 struct rtl_section *section; 494 struct rtl_subsection *entry, *tmp; 495 u32 section_len; 496 u32 opcode; 497 int len = 0; 498 int i; 499 u8 *ptr; 500 struct rtl_iovec iov = { 501 .data = btrtl_dev->fw_data, 502 .len = btrtl_dev->fw_len - 7, /* Cut the tail */ 503 }; 504 505 rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val); 506 if (rc < 0) 507 return -EIO; 508 key_id = reg_val[0]; 509 510 rtl_dev_dbg(hdev, "%s: key id %u", __func__, key_id); 511 512 btrtl_dev->key_id = key_id; 513 514 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); 515 if (!hdr) 516 return -EINVAL; 517 num_sections = le32_to_cpu(hdr->num_sections); 518 519 rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version), 520 *((u32 *)(hdr->fw_version + 4))); 521 522 for (i = 0; i < num_sections; i++) { 523 section = rtl_iov_pull_data(&iov, sizeof(*section)); 524 if (!section) 525 break; 526 section_len = le32_to_cpu(section->len); 527 opcode = le32_to_cpu(section->opcode); 528 529 rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode); 530 531 ptr = rtl_iov_pull_data(&iov, section_len); 532 if (!ptr) 533 break; 534 535 switch (opcode) { 536 case RTL_PATCH_SNIPPETS: 537 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 538 ptr, section_len); 539 break; 540 case RTL_PATCH_SECURITY_HEADER: 541 /* If key_id from chip is zero, ignore all security 542 * headers. 543 */ 544 if (!key_id) 545 break; 546 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 547 ptr, section_len); 548 break; 549 case RTL_PATCH_DUMMY_HEADER: 550 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 551 ptr, section_len); 552 break; 553 default: 554 rc = 0; 555 break; 556 } 557 if (rc < 0) { 558 rtl_dev_err(hdev, "RTL: Parse section (%u) err %d", 559 opcode, rc); 560 return rc; 561 } 562 len += rc; 563 } 564 565 if (!len) 566 return -ENODATA; 567 568 /* Allocate mem and copy all found subsecs. */ 569 ptr = kvmalloc(len, GFP_KERNEL); 570 if (!ptr) 571 return -ENOMEM; 572 573 len = 0; 574 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { 575 rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x", 576 entry->opcode, entry->data, entry->len); 577 memcpy(ptr + len, entry->data, entry->len); 578 len += entry->len; 579 } 580 581 if (!len) 582 return -EPERM; 583 584 *_buf = ptr; 585 return len; 586 } 587 588 static int rtlbt_parse_firmware(struct hci_dev *hdev, 589 struct btrtl_device_info *btrtl_dev, 590 unsigned char **_buf) 591 { 592 static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 }; 593 struct rtl_epatch_header *epatch_info; 594 unsigned char *buf; 595 int i, len; 596 size_t min_size; 597 u8 opcode, length, data; 598 int project_id = -1; 599 const unsigned char *fwptr, *chip_id_base; 600 const unsigned char *patch_length_base, *patch_offset_base; 601 u32 patch_offset = 0; 602 u16 patch_length, num_patches; 603 static const struct { 604 __u16 lmp_subver; 605 __u8 id; 606 } project_id_to_lmp_subver[] = { 607 { RTL_ROM_LMP_8723A, 0 }, 608 { RTL_ROM_LMP_8723B, 1 }, 609 { RTL_ROM_LMP_8821A, 2 }, 610 { RTL_ROM_LMP_8761A, 3 }, 611 { RTL_ROM_LMP_8703B, 7 }, 612 { RTL_ROM_LMP_8822B, 8 }, 613 { RTL_ROM_LMP_8723B, 9 }, /* 8723D */ 614 { RTL_ROM_LMP_8821A, 10 }, /* 8821C */ 615 { RTL_ROM_LMP_8822B, 13 }, /* 8822C */ 616 { RTL_ROM_LMP_8761A, 14 }, /* 8761B */ 617 { RTL_ROM_LMP_8852A, 18 }, /* 8852A */ 618 { RTL_ROM_LMP_8852A, 20 }, /* 8852B */ 619 { RTL_ROM_LMP_8852A, 25 }, /* 8852C */ 620 { RTL_ROM_LMP_8851B, 36 }, /* 8851B */ 621 }; 622 623 if (btrtl_dev->fw_len <= 8) 624 return -EINVAL; 625 626 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) 627 min_size = sizeof(struct rtl_epatch_header) + 628 sizeof(extension_sig) + 3; 629 else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) 630 min_size = sizeof(struct rtl_epatch_header_v2) + 631 sizeof(extension_sig) + 3; 632 else 633 return -EINVAL; 634 635 if (btrtl_dev->fw_len < min_size) 636 return -EINVAL; 637 638 fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig); 639 if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) { 640 rtl_dev_err(hdev, "extension section signature mismatch"); 641 return -EINVAL; 642 } 643 644 /* Loop from the end of the firmware parsing instructions, until 645 * we find an instruction that identifies the "project ID" for the 646 * hardware supported by this firwmare file. 647 * Once we have that, we double-check that project_id is suitable 648 * for the hardware we are working with. 649 */ 650 while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) { 651 opcode = *--fwptr; 652 length = *--fwptr; 653 data = *--fwptr; 654 655 BT_DBG("check op=%x len=%x data=%x", opcode, length, data); 656 657 if (opcode == 0xff) /* EOF */ 658 break; 659 660 if (length == 0) { 661 rtl_dev_err(hdev, "found instruction with length 0"); 662 return -EINVAL; 663 } 664 665 if (opcode == 0 && length == 1) { 666 project_id = data; 667 break; 668 } 669 670 fwptr -= length; 671 } 672 673 if (project_id < 0) { 674 rtl_dev_err(hdev, "failed to find version instruction"); 675 return -EINVAL; 676 } 677 678 /* Find project_id in table */ 679 for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) { 680 if (project_id == project_id_to_lmp_subver[i].id) { 681 btrtl_dev->project_id = project_id; 682 break; 683 } 684 } 685 686 if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) { 687 rtl_dev_err(hdev, "unknown project id %d", project_id); 688 return -EINVAL; 689 } 690 691 if (btrtl_dev->ic_info->lmp_subver != 692 project_id_to_lmp_subver[i].lmp_subver) { 693 rtl_dev_err(hdev, "firmware is for %x but this is a %x", 694 project_id_to_lmp_subver[i].lmp_subver, 695 btrtl_dev->ic_info->lmp_subver); 696 return -EINVAL; 697 } 698 699 if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) { 700 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) 701 return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf); 702 rtl_dev_err(hdev, "bad EPATCH signature"); 703 return -EINVAL; 704 } 705 706 epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data; 707 num_patches = le16_to_cpu(epatch_info->num_patches); 708 BT_DBG("fw_version=%x, num_patches=%d", 709 le32_to_cpu(epatch_info->fw_version), num_patches); 710 711 /* After the rtl_epatch_header there is a funky patch metadata section. 712 * Assuming 2 patches, the layout is: 713 * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2 714 * 715 * Find the right patch for this chip. 716 */ 717 min_size += 8 * num_patches; 718 if (btrtl_dev->fw_len < min_size) 719 return -EINVAL; 720 721 chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header); 722 patch_length_base = chip_id_base + (sizeof(u16) * num_patches); 723 patch_offset_base = patch_length_base + (sizeof(u16) * num_patches); 724 for (i = 0; i < num_patches; i++) { 725 u16 chip_id = get_unaligned_le16(chip_id_base + 726 (i * sizeof(u16))); 727 if (chip_id == btrtl_dev->rom_version + 1) { 728 patch_length = get_unaligned_le16(patch_length_base + 729 (i * sizeof(u16))); 730 patch_offset = get_unaligned_le32(patch_offset_base + 731 (i * sizeof(u32))); 732 break; 733 } 734 } 735 736 if (!patch_offset) { 737 rtl_dev_err(hdev, "didn't find patch for chip id %d", 738 btrtl_dev->rom_version); 739 return -EINVAL; 740 } 741 742 BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i); 743 min_size = patch_offset + patch_length; 744 if (btrtl_dev->fw_len < min_size) 745 return -EINVAL; 746 747 /* Copy the firmware into a new buffer and write the version at 748 * the end. 749 */ 750 len = patch_length; 751 buf = kvmalloc(patch_length, GFP_KERNEL); 752 if (!buf) 753 return -ENOMEM; 754 755 memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4); 756 memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4); 757 758 *_buf = buf; 759 return len; 760 } 761 762 static int rtl_download_firmware(struct hci_dev *hdev, 763 const unsigned char *data, int fw_len) 764 { 765 struct rtl_download_cmd *dl_cmd; 766 int frag_num = fw_len / RTL_FRAG_LEN + 1; 767 int frag_len = RTL_FRAG_LEN; 768 int ret = 0; 769 int i; 770 int j = 0; 771 struct sk_buff *skb; 772 struct hci_rp_read_local_version *rp; 773 774 dl_cmd = kmalloc(sizeof(struct rtl_download_cmd), GFP_KERNEL); 775 if (!dl_cmd) 776 return -ENOMEM; 777 778 for (i = 0; i < frag_num; i++) { 779 struct sk_buff *skb; 780 781 dl_cmd->index = j++; 782 if (dl_cmd->index == 0x7f) 783 j = 1; 784 785 if (i == (frag_num - 1)) { 786 dl_cmd->index |= 0x80; /* data end */ 787 frag_len = fw_len % RTL_FRAG_LEN; 788 } 789 rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i, 790 frag_num, dl_cmd->index); 791 memcpy(dl_cmd->data, data, frag_len); 792 793 /* Send download command */ 794 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd, 795 HCI_INIT_TIMEOUT); 796 if (IS_ERR(skb)) { 797 rtl_dev_err(hdev, "download fw command failed (%ld)", 798 PTR_ERR(skb)); 799 ret = PTR_ERR(skb); 800 goto out; 801 } 802 803 if (skb->len != sizeof(struct rtl_download_response)) { 804 rtl_dev_err(hdev, "download fw event length mismatch"); 805 kfree_skb(skb); 806 ret = -EIO; 807 goto out; 808 } 809 810 kfree_skb(skb); 811 data += RTL_FRAG_LEN; 812 } 813 814 skb = btrtl_read_local_version(hdev); 815 if (IS_ERR(skb)) { 816 ret = PTR_ERR(skb); 817 rtl_dev_err(hdev, "read local version failed"); 818 goto out; 819 } 820 821 rp = (struct hci_rp_read_local_version *)skb->data; 822 rtl_dev_info(hdev, "fw version 0x%04x%04x", 823 __le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver)); 824 kfree_skb(skb); 825 826 out: 827 kfree(dl_cmd); 828 return ret; 829 } 830 831 static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff) 832 { 833 const struct firmware *fw; 834 int ret; 835 836 rtl_dev_info(hdev, "loading %s", name); 837 ret = request_firmware(&fw, name, &hdev->dev); 838 if (ret < 0) 839 return ret; 840 ret = fw->size; 841 *buff = kvmalloc(fw->size, GFP_KERNEL); 842 if (*buff) 843 memcpy(*buff, fw->data, ret); 844 else 845 ret = -ENOMEM; 846 847 release_firmware(fw); 848 849 return ret; 850 } 851 852 static int btrtl_setup_rtl8723a(struct hci_dev *hdev, 853 struct btrtl_device_info *btrtl_dev) 854 { 855 if (btrtl_dev->fw_len < 8) 856 return -EINVAL; 857 858 /* Check that the firmware doesn't have the epatch signature 859 * (which is only for RTL8723B and newer). 860 */ 861 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) { 862 rtl_dev_err(hdev, "unexpected EPATCH signature!"); 863 return -EINVAL; 864 } 865 866 return rtl_download_firmware(hdev, btrtl_dev->fw_data, 867 btrtl_dev->fw_len); 868 } 869 870 static int btrtl_setup_rtl8723b(struct hci_dev *hdev, 871 struct btrtl_device_info *btrtl_dev) 872 { 873 unsigned char *fw_data = NULL; 874 int ret; 875 u8 *tbuff; 876 877 ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data); 878 if (ret < 0) 879 goto out; 880 881 if (btrtl_dev->cfg_len > 0) { 882 tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL); 883 if (!tbuff) { 884 ret = -ENOMEM; 885 goto out; 886 } 887 888 memcpy(tbuff, fw_data, ret); 889 kvfree(fw_data); 890 891 memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len); 892 ret += btrtl_dev->cfg_len; 893 894 fw_data = tbuff; 895 } 896 897 rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret); 898 899 ret = rtl_download_firmware(hdev, fw_data, ret); 900 901 out: 902 kvfree(fw_data); 903 return ret; 904 } 905 906 static bool rtl_has_chip_type(u16 lmp_subver) 907 { 908 switch (lmp_subver) { 909 case RTL_ROM_LMP_8703B: 910 return true; 911 default: 912 break; 913 } 914 915 return false; 916 } 917 918 static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type) 919 { 920 struct rtl_chip_type_evt *chip_type; 921 struct sk_buff *skb; 922 const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0}; 923 924 /* Read RTL chip type command */ 925 skb = __hci_cmd_sync(hdev, 0xfc61, 5, cmd_buf, HCI_INIT_TIMEOUT); 926 if (IS_ERR(skb)) { 927 rtl_dev_err(hdev, "Read chip type failed (%ld)", 928 PTR_ERR(skb)); 929 return PTR_ERR(skb); 930 } 931 932 chip_type = skb_pull_data(skb, sizeof(*chip_type)); 933 if (!chip_type) { 934 rtl_dev_err(hdev, "RTL chip type event length mismatch"); 935 kfree_skb(skb); 936 return -EIO; 937 } 938 939 rtl_dev_info(hdev, "chip_type status=%x type=%x", 940 chip_type->status, chip_type->type); 941 942 *type = chip_type->type & 0x0f; 943 944 kfree_skb(skb); 945 return 0; 946 } 947 948 void btrtl_free(struct btrtl_device_info *btrtl_dev) 949 { 950 struct rtl_subsection *entry, *tmp; 951 952 kvfree(btrtl_dev->fw_data); 953 kvfree(btrtl_dev->cfg_data); 954 955 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { 956 list_del(&entry->list); 957 kfree(entry); 958 } 959 960 kfree(btrtl_dev); 961 } 962 EXPORT_SYMBOL_GPL(btrtl_free); 963 964 struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, 965 const char *postfix) 966 { 967 struct btrtl_device_info *btrtl_dev; 968 struct sk_buff *skb; 969 struct hci_rp_read_local_version *resp; 970 char cfg_name[40]; 971 u16 hci_rev, lmp_subver; 972 u8 hci_ver, lmp_ver, chip_type = 0; 973 int ret; 974 u16 opcode; 975 u8 cmd[2]; 976 u8 reg_val[2]; 977 978 btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); 979 if (!btrtl_dev) { 980 ret = -ENOMEM; 981 goto err_alloc; 982 } 983 984 INIT_LIST_HEAD(&btrtl_dev->patch_subsecs); 985 986 check_version: 987 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val); 988 if (ret < 0) 989 goto err_free; 990 lmp_subver = get_unaligned_le16(reg_val); 991 992 if (lmp_subver == RTL_ROM_LMP_8822B) { 993 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val); 994 if (ret < 0) 995 goto err_free; 996 hci_rev = get_unaligned_le16(reg_val); 997 998 /* 8822E */ 999 if (hci_rev == 0x000e) { 1000 hci_ver = 0x0c; 1001 lmp_ver = 0x0c; 1002 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, 1003 hci_ver, hdev->bus, 1004 chip_type); 1005 goto next; 1006 } 1007 } 1008 1009 skb = btrtl_read_local_version(hdev); 1010 if (IS_ERR(skb)) { 1011 ret = PTR_ERR(skb); 1012 goto err_free; 1013 } 1014 1015 resp = (struct hci_rp_read_local_version *)skb->data; 1016 1017 hci_ver = resp->hci_ver; 1018 hci_rev = le16_to_cpu(resp->hci_rev); 1019 lmp_ver = resp->lmp_ver; 1020 lmp_subver = le16_to_cpu(resp->lmp_subver); 1021 1022 kfree_skb(skb); 1023 1024 if (rtl_has_chip_type(lmp_subver)) { 1025 ret = rtl_read_chip_type(hdev, &chip_type); 1026 if (ret) 1027 goto err_free; 1028 } 1029 1030 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver, 1031 hdev->bus, chip_type); 1032 1033 next: 1034 rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", 1035 hci_ver, hci_rev, 1036 lmp_ver, lmp_subver); 1037 1038 if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw) 1039 btrtl_dev->drop_fw = true; 1040 else 1041 btrtl_dev->drop_fw = false; 1042 1043 if (btrtl_dev->drop_fw) { 1044 opcode = hci_opcode_pack(0x3f, 0x66); 1045 cmd[0] = opcode & 0xff; 1046 cmd[1] = opcode >> 8; 1047 1048 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); 1049 if (!skb) 1050 goto err_free; 1051 1052 skb_put_data(skb, cmd, sizeof(cmd)); 1053 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 1054 1055 ret = hdev->send(hdev, skb); 1056 if (ret < 0) { 1057 bt_dev_err(hdev, "sending frame failed (%d)", ret); 1058 kfree_skb(skb); 1059 goto err_free; 1060 } 1061 1062 /* Ensure the above vendor command is sent to controller and 1063 * process has done. 1064 */ 1065 msleep(200); 1066 1067 goto check_version; 1068 } 1069 1070 if (!btrtl_dev->ic_info) { 1071 rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x", 1072 lmp_subver, hci_rev, hci_ver); 1073 return btrtl_dev; 1074 } 1075 1076 if (btrtl_dev->ic_info->has_rom_version) { 1077 ret = rtl_read_rom_version(hdev, &btrtl_dev->rom_version); 1078 if (ret) 1079 goto err_free; 1080 } 1081 1082 btrtl_dev->fw_len = rtl_load_file(hdev, btrtl_dev->ic_info->fw_name, 1083 &btrtl_dev->fw_data); 1084 if (btrtl_dev->fw_len < 0) { 1085 rtl_dev_err(hdev, "firmware file %s not found", 1086 btrtl_dev->ic_info->fw_name); 1087 ret = btrtl_dev->fw_len; 1088 goto err_free; 1089 } 1090 1091 if (btrtl_dev->ic_info->cfg_name) { 1092 if (postfix) { 1093 snprintf(cfg_name, sizeof(cfg_name), "%s-%s.bin", 1094 btrtl_dev->ic_info->cfg_name, postfix); 1095 } else { 1096 snprintf(cfg_name, sizeof(cfg_name), "%s.bin", 1097 btrtl_dev->ic_info->cfg_name); 1098 } 1099 btrtl_dev->cfg_len = rtl_load_file(hdev, cfg_name, 1100 &btrtl_dev->cfg_data); 1101 if (btrtl_dev->ic_info->config_needed && 1102 btrtl_dev->cfg_len <= 0) { 1103 rtl_dev_err(hdev, "mandatory config file %s not found", 1104 btrtl_dev->ic_info->cfg_name); 1105 ret = btrtl_dev->cfg_len; 1106 goto err_free; 1107 } 1108 } 1109 1110 /* The following chips supports the Microsoft vendor extension, 1111 * therefore set the corresponding VsMsftOpCode. 1112 */ 1113 if (btrtl_dev->ic_info->has_msft_ext) 1114 hci_set_msft_opcode(hdev, 0xFCF0); 1115 1116 return btrtl_dev; 1117 1118 err_free: 1119 btrtl_free(btrtl_dev); 1120 err_alloc: 1121 return ERR_PTR(ret); 1122 } 1123 EXPORT_SYMBOL_GPL(btrtl_initialize); 1124 1125 int btrtl_download_firmware(struct hci_dev *hdev, 1126 struct btrtl_device_info *btrtl_dev) 1127 { 1128 /* Match a set of subver values that correspond to stock firmware, 1129 * which is not compatible with standard btusb. 1130 * If matched, upload an alternative firmware that does conform to 1131 * standard btusb. Once that firmware is uploaded, the subver changes 1132 * to a different value. 1133 */ 1134 if (!btrtl_dev->ic_info) { 1135 rtl_dev_info(hdev, "assuming no firmware upload needed"); 1136 return 0; 1137 } 1138 1139 switch (btrtl_dev->ic_info->lmp_subver) { 1140 case RTL_ROM_LMP_8723A: 1141 return btrtl_setup_rtl8723a(hdev, btrtl_dev); 1142 case RTL_ROM_LMP_8723B: 1143 case RTL_ROM_LMP_8821A: 1144 case RTL_ROM_LMP_8761A: 1145 case RTL_ROM_LMP_8822B: 1146 case RTL_ROM_LMP_8852A: 1147 case RTL_ROM_LMP_8703B: 1148 case RTL_ROM_LMP_8851B: 1149 return btrtl_setup_rtl8723b(hdev, btrtl_dev); 1150 default: 1151 rtl_dev_info(hdev, "assuming no firmware upload needed"); 1152 return 0; 1153 } 1154 } 1155 EXPORT_SYMBOL_GPL(btrtl_download_firmware); 1156 1157 void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) 1158 { 1159 /* Enable controller to do both LE scan and BR/EDR inquiry 1160 * simultaneously. 1161 */ 1162 set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); 1163 1164 /* Enable central-peripheral role (able to create new connections with 1165 * an existing connection in slave role). 1166 */ 1167 /* Enable WBS supported for the specific Realtek devices. */ 1168 switch (btrtl_dev->project_id) { 1169 case CHIP_ID_8822C: 1170 case CHIP_ID_8852A: 1171 case CHIP_ID_8852B: 1172 case CHIP_ID_8852C: 1173 case CHIP_ID_8851B: 1174 set_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks); 1175 set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, &hdev->quirks); 1176 1177 /* RTL8852C needs to transmit mSBC data continuously without 1178 * the zero length of USB packets for the ALT 6 supported chips 1179 */ 1180 if (btrtl_dev->project_id == CHIP_ID_8852C) 1181 btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP); 1182 1183 hci_set_aosp_capable(hdev); 1184 break; 1185 default: 1186 rtl_dev_dbg(hdev, "Central-peripheral role not enabled."); 1187 rtl_dev_dbg(hdev, "WBS supported not enabled."); 1188 break; 1189 } 1190 1191 if (!btrtl_dev->ic_info) 1192 return; 1193 1194 switch (btrtl_dev->ic_info->lmp_subver) { 1195 case RTL_ROM_LMP_8703B: 1196 /* 8723CS reports two pages for local ext features, 1197 * but it doesn't support any features from page 2 - 1198 * it either responds with garbage or with error status 1199 */ 1200 set_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 1201 &hdev->quirks); 1202 break; 1203 default: 1204 break; 1205 } 1206 } 1207 EXPORT_SYMBOL_GPL(btrtl_set_quirks); 1208 1209 int btrtl_setup_realtek(struct hci_dev *hdev) 1210 { 1211 struct btrtl_device_info *btrtl_dev; 1212 int ret; 1213 1214 btrtl_dev = btrtl_initialize(hdev, NULL); 1215 if (IS_ERR(btrtl_dev)) 1216 return PTR_ERR(btrtl_dev); 1217 1218 ret = btrtl_download_firmware(hdev, btrtl_dev); 1219 1220 btrtl_set_quirks(hdev, btrtl_dev); 1221 1222 btrtl_free(btrtl_dev); 1223 return ret; 1224 } 1225 EXPORT_SYMBOL_GPL(btrtl_setup_realtek); 1226 1227 int btrtl_shutdown_realtek(struct hci_dev *hdev) 1228 { 1229 struct sk_buff *skb; 1230 int ret; 1231 1232 /* According to the vendor driver, BT must be reset on close to avoid 1233 * firmware crash. 1234 */ 1235 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 1236 if (IS_ERR(skb)) { 1237 ret = PTR_ERR(skb); 1238 bt_dev_err(hdev, "HCI reset during shutdown failed"); 1239 return ret; 1240 } 1241 kfree_skb(skb); 1242 1243 return 0; 1244 } 1245 EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek); 1246 1247 static unsigned int btrtl_convert_baudrate(u32 device_baudrate) 1248 { 1249 switch (device_baudrate) { 1250 case 0x0252a00a: 1251 return 230400; 1252 1253 case 0x05f75004: 1254 return 921600; 1255 1256 case 0x00005004: 1257 return 1000000; 1258 1259 case 0x04928002: 1260 case 0x01128002: 1261 return 1500000; 1262 1263 case 0x00005002: 1264 return 2000000; 1265 1266 case 0x0000b001: 1267 return 2500000; 1268 1269 case 0x04928001: 1270 return 3000000; 1271 1272 case 0x052a6001: 1273 return 3500000; 1274 1275 case 0x00005001: 1276 return 4000000; 1277 1278 case 0x0252c014: 1279 default: 1280 return 115200; 1281 } 1282 } 1283 1284 int btrtl_get_uart_settings(struct hci_dev *hdev, 1285 struct btrtl_device_info *btrtl_dev, 1286 unsigned int *controller_baudrate, 1287 u32 *device_baudrate, bool *flow_control) 1288 { 1289 struct rtl_vendor_config *config; 1290 struct rtl_vendor_config_entry *entry; 1291 int i, total_data_len; 1292 bool found = false; 1293 1294 total_data_len = btrtl_dev->cfg_len - sizeof(*config); 1295 if (total_data_len <= 0) { 1296 rtl_dev_warn(hdev, "no config loaded"); 1297 return -EINVAL; 1298 } 1299 1300 config = (struct rtl_vendor_config *)btrtl_dev->cfg_data; 1301 if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) { 1302 rtl_dev_err(hdev, "invalid config magic"); 1303 return -EINVAL; 1304 } 1305 1306 if (total_data_len < le16_to_cpu(config->total_len)) { 1307 rtl_dev_err(hdev, "config is too short"); 1308 return -EINVAL; 1309 } 1310 1311 for (i = 0; i < total_data_len; ) { 1312 entry = ((void *)config->entry) + i; 1313 1314 switch (le16_to_cpu(entry->offset)) { 1315 case 0xc: 1316 if (entry->len < sizeof(*device_baudrate)) { 1317 rtl_dev_err(hdev, "invalid UART config entry"); 1318 return -EINVAL; 1319 } 1320 1321 *device_baudrate = get_unaligned_le32(entry->data); 1322 *controller_baudrate = btrtl_convert_baudrate( 1323 *device_baudrate); 1324 1325 if (entry->len >= 13) 1326 *flow_control = !!(entry->data[12] & BIT(2)); 1327 else 1328 *flow_control = false; 1329 1330 found = true; 1331 break; 1332 1333 default: 1334 rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)", 1335 le16_to_cpu(entry->offset), entry->len); 1336 break; 1337 } 1338 1339 i += sizeof(*entry) + entry->len; 1340 } 1341 1342 if (!found) { 1343 rtl_dev_err(hdev, "no UART config entry found"); 1344 return -ENOENT; 1345 } 1346 1347 rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate); 1348 rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate); 1349 rtl_dev_dbg(hdev, "flow control %d", *flow_control); 1350 1351 return 0; 1352 } 1353 EXPORT_SYMBOL_GPL(btrtl_get_uart_settings); 1354 1355 MODULE_AUTHOR("Daniel Drake <drake@endlessm.com>"); 1356 MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION); 1357 MODULE_VERSION(VERSION); 1358 MODULE_LICENSE("GPL"); 1359 MODULE_FIRMWARE("rtl_bt/rtl8723a_fw.bin"); 1360 MODULE_FIRMWARE("rtl_bt/rtl8723b_fw.bin"); 1361 MODULE_FIRMWARE("rtl_bt/rtl8723b_config.bin"); 1362 MODULE_FIRMWARE("rtl_bt/rtl8723bs_fw.bin"); 1363 MODULE_FIRMWARE("rtl_bt/rtl8723bs_config.bin"); 1364 MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_fw.bin"); 1365 MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_config.bin"); 1366 MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_fw.bin"); 1367 MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_config.bin"); 1368 MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_fw.bin"); 1369 MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_config.bin"); 1370 MODULE_FIRMWARE("rtl_bt/rtl8723ds_fw.bin"); 1371 MODULE_FIRMWARE("rtl_bt/rtl8723ds_config.bin"); 1372 MODULE_FIRMWARE("rtl_bt/rtl8761a_fw.bin"); 1373 MODULE_FIRMWARE("rtl_bt/rtl8761a_config.bin"); 1374 MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin"); 1375 MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin"); 1376 MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin"); 1377 MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin"); 1378 MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin"); 1379 MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin"); 1380 MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin"); 1381 MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin"); 1382 MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin"); 1383 MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin"); 1384 MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin"); 1385 MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin"); 1386 MODULE_FIRMWARE("rtl_bt/rtl8851bu_fw.bin"); 1387 MODULE_FIRMWARE("rtl_bt/rtl8851bu_config.bin"); 1388