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btrtl.c
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linux-6.19.14/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 <linux/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_ROM_LMP_8922A 0x8922 34#define RTL_CONFIG_MAGIC 0x8723ab55 35 36#define RTL_VSC_OP_COREDUMP 0xfcff 37 38#define IC_MATCH_FL_LMPSUBV (1 << 0) 39#define IC_MATCH_FL_HCIREV (1 << 1) 40#define IC_MATCH_FL_HCIVER (1 << 2) 41#define IC_MATCH_FL_HCIBUS (1 << 3) 42#define IC_MATCH_FL_CHIP_TYPE (1 << 4) 43#define IC_INFO(lmps, hcir, hciv, bus) \ 44 .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_HCIREV | \ 45 IC_MATCH_FL_HCIVER | IC_MATCH_FL_HCIBUS, \ 46 .lmp_subver = (lmps), \ 47 .hci_rev = (hcir), \ 48 .hci_ver = (hciv), \ 49 .hci_bus = (bus) 50 51#define RTL_CHIP_SUBVER (&(struct rtl_vendor_cmd) {{0x10, 0x38, 0x04, 0x28, 0x80}}) 52#define RTL_CHIP_REV (&(struct rtl_vendor_cmd) {{0x10, 0x3A, 0x04, 0x28, 0x80}}) 53#define RTL_SEC_PROJ (&(struct rtl_vendor_cmd) {{0x10, 0xA4, 0xAD, 0x00, 0xb0}}) 54 55#define RTL_PATCH_SNIPPETS 0x01 56#define RTL_PATCH_DUMMY_HEADER 0x02 57#define RTL_PATCH_SECURITY_HEADER 0x03 58 59enum btrtl_chip_id { 60 CHIP_ID_8723A, 61 CHIP_ID_8723B, 62 CHIP_ID_8821A, 63 CHIP_ID_8761A, 64 CHIP_ID_8822B = 8, 65 CHIP_ID_8723D, 66 CHIP_ID_8821C, 67 CHIP_ID_8822C = 13, 68 CHIP_ID_8761B, 69 CHIP_ID_8852A = 18, 70 CHIP_ID_8852B = 20, 71 CHIP_ID_8852C = 25, 72 CHIP_ID_8851B = 36, 73 CHIP_ID_8922A = 44, 74 CHIP_ID_8852BT = 47, 75 CHIP_ID_8761C = 51, 76}; 77 78struct id_table { 79 __u16 match_flags; 80 __u16 lmp_subver; 81 __u16 hci_rev; 82 __u8 hci_ver; 83 __u8 hci_bus; 84 __u8 chip_type; 85 bool config_needed; 86 bool has_rom_version; 87 bool has_msft_ext; 88 char *fw_name; 89 char *cfg_name; 90 char *hw_info; 91}; 92 93struct btrtl_device_info { 94 const struct id_table *ic_info; 95 u8 rom_version; 96 u8 *fw_data; 97 int fw_len; 98 u8 *cfg_data; 99 int cfg_len; 100 bool drop_fw; 101 int project_id; 102 u8 key_id; 103 struct list_head patch_subsecs; 104}; 105 106static const struct id_table ic_id_table[] = { 107 /* 8723A */ 108 { IC_INFO(RTL_ROM_LMP_8723A, 0xb, 0x6, HCI_USB), 109 .config_needed = false, 110 .has_rom_version = false, 111 .fw_name = "rtl_bt/rtl8723a_fw", 112 .cfg_name = NULL, 113 .hw_info = "rtl8723au" }, 114 115 /* 8723BS */ 116 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_UART), 117 .config_needed = true, 118 .has_rom_version = true, 119 .fw_name = "rtl_bt/rtl8723bs_fw", 120 .cfg_name = "rtl_bt/rtl8723bs_config", 121 .hw_info = "rtl8723bs" }, 122 123 /* 8723B */ 124 { IC_INFO(RTL_ROM_LMP_8723B, 0xb, 0x6, HCI_USB), 125 .config_needed = false, 126 .has_rom_version = true, 127 .fw_name = "rtl_bt/rtl8723b_fw", 128 .cfg_name = "rtl_bt/rtl8723b_config", 129 .hw_info = "rtl8723bu" }, 130 131 /* 8723CS-CG */ 132 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | 133 IC_MATCH_FL_HCIBUS, 134 .lmp_subver = RTL_ROM_LMP_8703B, 135 .chip_type = RTL_CHIP_8723CS_CG, 136 .hci_bus = HCI_UART, 137 .config_needed = true, 138 .has_rom_version = true, 139 .fw_name = "rtl_bt/rtl8723cs_cg_fw", 140 .cfg_name = "rtl_bt/rtl8723cs_cg_config", 141 .hw_info = "rtl8723cs-cg" }, 142 143 /* 8723CS-VF */ 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_VF, 148 .hci_bus = HCI_UART, 149 .config_needed = true, 150 .has_rom_version = true, 151 .fw_name = "rtl_bt/rtl8723cs_vf_fw", 152 .cfg_name = "rtl_bt/rtl8723cs_vf_config", 153 .hw_info = "rtl8723cs-vf" }, 154 155 /* 8723CS-XX */ 156 { .match_flags = IC_MATCH_FL_LMPSUBV | IC_MATCH_FL_CHIP_TYPE | 157 IC_MATCH_FL_HCIBUS, 158 .lmp_subver = RTL_ROM_LMP_8703B, 159 .chip_type = RTL_CHIP_8723CS_XX, 160 .hci_bus = HCI_UART, 161 .config_needed = true, 162 .has_rom_version = true, 163 .fw_name = "rtl_bt/rtl8723cs_xx_fw", 164 .cfg_name = "rtl_bt/rtl8723cs_xx_config", 165 .hw_info = "rtl8723cs" }, 166 167 /* 8723D */ 168 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_USB), 169 .config_needed = true, 170 .has_rom_version = true, 171 .fw_name = "rtl_bt/rtl8723d_fw", 172 .cfg_name = "rtl_bt/rtl8723d_config", 173 .hw_info = "rtl8723du" }, 174 175 /* 8723DS */ 176 { IC_INFO(RTL_ROM_LMP_8723B, 0xd, 0x8, HCI_UART), 177 .config_needed = true, 178 .has_rom_version = true, 179 .fw_name = "rtl_bt/rtl8723ds_fw", 180 .cfg_name = "rtl_bt/rtl8723ds_config", 181 .hw_info = "rtl8723ds" }, 182 183 /* 8821A */ 184 { IC_INFO(RTL_ROM_LMP_8821A, 0xa, 0x6, HCI_USB), 185 .config_needed = false, 186 .has_rom_version = true, 187 .fw_name = "rtl_bt/rtl8821a_fw", 188 .cfg_name = "rtl_bt/rtl8821a_config", 189 .hw_info = "rtl8821au" }, 190 191 /* 8821C */ 192 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_USB), 193 .config_needed = false, 194 .has_rom_version = true, 195 .has_msft_ext = true, 196 .fw_name = "rtl_bt/rtl8821c_fw", 197 .cfg_name = "rtl_bt/rtl8821c_config", 198 .hw_info = "rtl8821cu" }, 199 200 /* 8821CS */ 201 { IC_INFO(RTL_ROM_LMP_8821A, 0xc, 0x8, HCI_UART), 202 .config_needed = true, 203 .has_rom_version = true, 204 .has_msft_ext = true, 205 .fw_name = "rtl_bt/rtl8821cs_fw", 206 .cfg_name = "rtl_bt/rtl8821cs_config", 207 .hw_info = "rtl8821cs" }, 208 209 /* 8761A */ 210 { IC_INFO(RTL_ROM_LMP_8761A, 0xa, 0x6, HCI_USB), 211 .config_needed = false, 212 .has_rom_version = true, 213 .fw_name = "rtl_bt/rtl8761a_fw", 214 .cfg_name = "rtl_bt/rtl8761a_config", 215 .hw_info = "rtl8761au" }, 216 217 /* 8761B */ 218 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_UART), 219 .config_needed = false, 220 .has_rom_version = true, 221 .has_msft_ext = true, 222 .fw_name = "rtl_bt/rtl8761b_fw", 223 .cfg_name = "rtl_bt/rtl8761b_config", 224 .hw_info = "rtl8761btv" }, 225 226 /* 8761BU */ 227 { IC_INFO(RTL_ROM_LMP_8761A, 0xb, 0xa, HCI_USB), 228 .config_needed = false, 229 .has_rom_version = true, 230 .fw_name = "rtl_bt/rtl8761bu_fw", 231 .cfg_name = "rtl_bt/rtl8761bu_config", 232 .hw_info = "rtl8761bu" }, 233 234 /* 8761CU */ 235 { IC_INFO(RTL_ROM_LMP_8761A, 0x0e, 0, HCI_USB), 236 .config_needed = false, 237 .has_rom_version = true, 238 .fw_name = "rtl_bt/rtl8761cu_fw", 239 .cfg_name = "rtl_bt/rtl8761cu_config", 240 .hw_info = "rtl8761cu" }, 241 242 /* 8822C with UART interface */ 243 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0x8, HCI_UART), 244 .config_needed = true, 245 .has_rom_version = true, 246 .has_msft_ext = true, 247 .fw_name = "rtl_bt/rtl8822cs_fw", 248 .cfg_name = "rtl_bt/rtl8822cs_config", 249 .hw_info = "rtl8822cs" }, 250 251 /* 8822C with UART interface */ 252 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_UART), 253 .config_needed = true, 254 .has_rom_version = true, 255 .has_msft_ext = true, 256 .fw_name = "rtl_bt/rtl8822cs_fw", 257 .cfg_name = "rtl_bt/rtl8822cs_config", 258 .hw_info = "rtl8822cs" }, 259 260 /* 8822C with USB interface */ 261 { IC_INFO(RTL_ROM_LMP_8822B, 0xc, 0xa, HCI_USB), 262 .config_needed = false, 263 .has_rom_version = true, 264 .has_msft_ext = true, 265 .fw_name = "rtl_bt/rtl8822cu_fw", 266 .cfg_name = "rtl_bt/rtl8822cu_config", 267 .hw_info = "rtl8822cu" }, 268 269 /* 8822B */ 270 { IC_INFO(RTL_ROM_LMP_8822B, 0xb, 0x7, HCI_USB), 271 .config_needed = true, 272 .has_rom_version = true, 273 .has_msft_ext = true, 274 .fw_name = "rtl_bt/rtl8822b_fw", 275 .cfg_name = "rtl_bt/rtl8822b_config", 276 .hw_info = "rtl8822bu" }, 277 278 /* 8852A */ 279 { IC_INFO(RTL_ROM_LMP_8852A, 0xa, 0xb, HCI_USB), 280 .config_needed = false, 281 .has_rom_version = true, 282 .has_msft_ext = true, 283 .fw_name = "rtl_bt/rtl8852au_fw", 284 .cfg_name = "rtl_bt/rtl8852au_config", 285 .hw_info = "rtl8852au" }, 286 287 /* 8852B with UART interface */ 288 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_UART), 289 .config_needed = true, 290 .has_rom_version = true, 291 .has_msft_ext = true, 292 .fw_name = "rtl_bt/rtl8852bs_fw", 293 .cfg_name = "rtl_bt/rtl8852bs_config", 294 .hw_info = "rtl8852bs" }, 295 296 /* 8852B */ 297 { IC_INFO(RTL_ROM_LMP_8852A, 0xb, 0xb, HCI_USB), 298 .config_needed = false, 299 .has_rom_version = true, 300 .has_msft_ext = true, 301 .fw_name = "rtl_bt/rtl8852bu_fw", 302 .cfg_name = "rtl_bt/rtl8852bu_config", 303 .hw_info = "rtl8852bu" }, 304 305 /* 8852C */ 306 { IC_INFO(RTL_ROM_LMP_8852A, 0xc, 0xc, HCI_USB), 307 .config_needed = false, 308 .has_rom_version = true, 309 .has_msft_ext = true, 310 .fw_name = "rtl_bt/rtl8852cu_fw", 311 .cfg_name = "rtl_bt/rtl8852cu_config", 312 .hw_info = "rtl8852cu" }, 313 314 /* 8851B */ 315 { IC_INFO(RTL_ROM_LMP_8851B, 0xb, 0xc, HCI_USB), 316 .config_needed = false, 317 .has_rom_version = true, 318 .has_msft_ext = false, 319 .fw_name = "rtl_bt/rtl8851bu_fw", 320 .cfg_name = "rtl_bt/rtl8851bu_config", 321 .hw_info = "rtl8851bu" }, 322 323 /* 8922A */ 324 { IC_INFO(RTL_ROM_LMP_8922A, 0xa, 0xc, HCI_USB), 325 .config_needed = false, 326 .has_rom_version = true, 327 .has_msft_ext = true, 328 .fw_name = "rtl_bt/rtl8922au_fw", 329 .cfg_name = "rtl_bt/rtl8922au_config", 330 .hw_info = "rtl8922au" }, 331 332 /* 8852BT/8852BE-VT */ 333 { IC_INFO(RTL_ROM_LMP_8852A, 0x87, 0xc, HCI_USB), 334 .config_needed = false, 335 .has_rom_version = true, 336 .has_msft_ext = true, 337 .fw_name = "rtl_bt/rtl8852btu_fw", 338 .cfg_name = "rtl_bt/rtl8852btu_config", 339 .hw_info = "rtl8852btu" }, 340 }; 341 342static const struct id_table *btrtl_match_ic(u16 lmp_subver, u16 hci_rev, 343 u8 hci_ver, u8 hci_bus, 344 u8 chip_type) 345{ 346 int i; 347 348 for (i = 0; i < ARRAY_SIZE(ic_id_table); i++) { 349 if ((ic_id_table[i].match_flags & IC_MATCH_FL_LMPSUBV) && 350 (ic_id_table[i].lmp_subver != lmp_subver)) 351 continue; 352 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIREV) && 353 (ic_id_table[i].hci_rev != hci_rev)) 354 continue; 355 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIVER) && 356 (ic_id_table[i].hci_ver != hci_ver) && 357 (ic_id_table[i].hci_ver != 0)) 358 continue; 359 if ((ic_id_table[i].match_flags & IC_MATCH_FL_HCIBUS) && 360 (ic_id_table[i].hci_bus != hci_bus)) 361 continue; 362 if ((ic_id_table[i].match_flags & IC_MATCH_FL_CHIP_TYPE) && 363 (ic_id_table[i].chip_type != chip_type)) 364 continue; 365 366 break; 367 } 368 if (i >= ARRAY_SIZE(ic_id_table)) 369 return NULL; 370 371 return &ic_id_table[i]; 372} 373 374static struct sk_buff *btrtl_read_local_version(struct hci_dev *hdev) 375{ 376 struct sk_buff *skb; 377 378 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 379 HCI_INIT_TIMEOUT); 380 if (IS_ERR(skb)) { 381 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION failed (%ld)", 382 PTR_ERR(skb)); 383 return skb; 384 } 385 386 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 387 rtl_dev_err(hdev, "HCI_OP_READ_LOCAL_VERSION event length mismatch"); 388 kfree_skb(skb); 389 return ERR_PTR(-EIO); 390 } 391 392 return skb; 393} 394 395static int rtl_read_rom_version(struct hci_dev *hdev, u8 *version) 396{ 397 struct rtl_rom_version_evt *rom_version; 398 struct sk_buff *skb; 399 400 /* Read RTL ROM version command */ 401 skb = __hci_cmd_sync(hdev, 0xfc6d, 0, NULL, HCI_INIT_TIMEOUT); 402 if (IS_ERR(skb)) { 403 rtl_dev_err(hdev, "Read ROM version failed (%ld)", 404 PTR_ERR(skb)); 405 return PTR_ERR(skb); 406 } 407 408 if (skb->len != sizeof(*rom_version)) { 409 rtl_dev_err(hdev, "version event length mismatch"); 410 kfree_skb(skb); 411 return -EIO; 412 } 413 414 rom_version = (struct rtl_rom_version_evt *)skb->data; 415 rtl_dev_info(hdev, "rom_version status=%x version=%x", 416 rom_version->status, rom_version->version); 417 418 *version = rom_version->version; 419 420 kfree_skb(skb); 421 return 0; 422} 423 424static int btrtl_vendor_read_reg16(struct hci_dev *hdev, 425 struct rtl_vendor_cmd *cmd, u8 *rp) 426{ 427 struct sk_buff *skb; 428 int err = 0; 429 430 skb = __hci_cmd_sync(hdev, 0xfc61, sizeof(*cmd), cmd, 431 HCI_INIT_TIMEOUT); 432 if (IS_ERR(skb)) { 433 err = PTR_ERR(skb); 434 rtl_dev_err(hdev, "RTL: Read reg16 failed (%d)", err); 435 return err; 436 } 437 438 if (skb->len != 3 || skb->data[0]) { 439 bt_dev_err(hdev, "RTL: Read reg16 length mismatch"); 440 kfree_skb(skb); 441 return -EIO; 442 } 443 444 if (rp) 445 memcpy(rp, skb->data + 1, 2); 446 447 kfree_skb(skb); 448 449 return 0; 450} 451 452static void *rtl_iov_pull_data(struct rtl_iovec *iov, u32 len) 453{ 454 void *data = iov->data; 455 456 if (iov->len < len) 457 return NULL; 458 459 iov->data += len; 460 iov->len -= len; 461 462 return data; 463} 464 465static void btrtl_insert_ordered_subsec(struct rtl_subsection *node, 466 struct btrtl_device_info *btrtl_dev) 467{ 468 struct list_head *pos; 469 struct list_head *next; 470 struct rtl_subsection *subsec; 471 472 list_for_each_safe(pos, next, &btrtl_dev->patch_subsecs) { 473 subsec = list_entry(pos, struct rtl_subsection, list); 474 if (subsec->prio >= node->prio) 475 break; 476 } 477 __list_add(&node->list, pos->prev, pos); 478} 479 480static int btrtl_parse_section(struct hci_dev *hdev, 481 struct btrtl_device_info *btrtl_dev, u32 opcode, 482 u8 *data, u32 len) 483{ 484 struct rtl_section_hdr *hdr; 485 struct rtl_subsection *subsec; 486 struct rtl_common_subsec *common_subsec; 487 struct rtl_sec_hdr *sec_hdr; 488 int i; 489 u8 *ptr; 490 u16 num_subsecs; 491 u32 subsec_len; 492 int rc = 0; 493 struct rtl_iovec iov = { 494 .data = data, 495 .len = len, 496 }; 497 498 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); 499 if (!hdr) 500 return -EINVAL; 501 num_subsecs = le16_to_cpu(hdr->num); 502 503 for (i = 0; i < num_subsecs; i++) { 504 common_subsec = rtl_iov_pull_data(&iov, sizeof(*common_subsec)); 505 if (!common_subsec) 506 break; 507 subsec_len = le32_to_cpu(common_subsec->len); 508 509 rtl_dev_dbg(hdev, "subsec, eco 0x%02x, len %08x", 510 common_subsec->eco, subsec_len); 511 512 ptr = rtl_iov_pull_data(&iov, subsec_len); 513 if (!ptr) 514 break; 515 516 if (common_subsec->eco != btrtl_dev->rom_version + 1) 517 continue; 518 519 switch (opcode) { 520 case RTL_PATCH_SECURITY_HEADER: 521 sec_hdr = (void *)common_subsec; 522 if (sec_hdr->key_id != btrtl_dev->key_id) 523 continue; 524 break; 525 } 526 527 subsec = kzalloc(sizeof(*subsec), GFP_KERNEL); 528 if (!subsec) 529 return -ENOMEM; 530 subsec->opcode = opcode; 531 subsec->prio = common_subsec->prio; 532 subsec->len = subsec_len; 533 subsec->data = ptr; 534 btrtl_insert_ordered_subsec(subsec, btrtl_dev); 535 rc += subsec_len; 536 } 537 538 return rc; 539} 540 541static int rtlbt_parse_firmware_v2(struct hci_dev *hdev, 542 struct btrtl_device_info *btrtl_dev, 543 unsigned char **_buf) 544{ 545 struct rtl_epatch_header_v2 *hdr; 546 int rc; 547 u8 key_id; 548 u32 num_sections; 549 struct rtl_section *section; 550 struct rtl_subsection *entry, *tmp; 551 u32 section_len; 552 u32 opcode; 553 int len = 0; 554 int i; 555 u8 *ptr; 556 struct rtl_iovec iov = { 557 .data = btrtl_dev->fw_data, 558 .len = btrtl_dev->fw_len - 7, /* Cut the tail */ 559 }; 560 561 key_id = btrtl_dev->key_id; 562 563 hdr = rtl_iov_pull_data(&iov, sizeof(*hdr)); 564 if (!hdr) 565 return -EINVAL; 566 num_sections = le32_to_cpu(hdr->num_sections); 567 568 rtl_dev_dbg(hdev, "FW version %08x-%08x", *((u32 *)hdr->fw_version), 569 *((u32 *)(hdr->fw_version + 4))); 570 571 for (i = 0; i < num_sections; i++) { 572 section = rtl_iov_pull_data(&iov, sizeof(*section)); 573 if (!section) 574 break; 575 section_len = le32_to_cpu(section->len); 576 opcode = le32_to_cpu(section->opcode); 577 578 rtl_dev_dbg(hdev, "opcode 0x%04x", section->opcode); 579 580 ptr = rtl_iov_pull_data(&iov, section_len); 581 if (!ptr) 582 break; 583 584 switch (opcode) { 585 case RTL_PATCH_SNIPPETS: 586 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 587 ptr, section_len); 588 break; 589 case RTL_PATCH_SECURITY_HEADER: 590 /* If key_id from chip is zero, ignore all security 591 * headers. 592 */ 593 if (!key_id) 594 break; 595 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 596 ptr, section_len); 597 break; 598 case RTL_PATCH_DUMMY_HEADER: 599 rc = btrtl_parse_section(hdev, btrtl_dev, opcode, 600 ptr, section_len); 601 break; 602 default: 603 rc = 0; 604 break; 605 } 606 if (rc < 0) { 607 rtl_dev_err(hdev, "RTL: Parse section (%u) err %d", 608 opcode, rc); 609 return rc; 610 } 611 len += rc; 612 } 613 614 if (!len) 615 return -ENODATA; 616 617 /* Allocate mem and copy all found subsecs. */ 618 ptr = kvmalloc(len, GFP_KERNEL); 619 if (!ptr) 620 return -ENOMEM; 621 622 len = 0; 623 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { 624 rtl_dev_dbg(hdev, "RTL: opcode %08x, addr %p, len 0x%x", 625 entry->opcode, entry->data, entry->len); 626 memcpy(ptr + len, entry->data, entry->len); 627 len += entry->len; 628 } 629 630 if (!len) { 631 kvfree(ptr); 632 return -EPERM; 633 } 634 635 *_buf = ptr; 636 return len; 637} 638 639static int rtlbt_parse_firmware(struct hci_dev *hdev, 640 struct btrtl_device_info *btrtl_dev, 641 unsigned char **_buf) 642{ 643 static const u8 extension_sig[] = { 0x51, 0x04, 0xfd, 0x77 }; 644 struct btrealtek_data *coredump_info = hci_get_priv(hdev); 645 struct rtl_epatch_header *epatch_info; 646 unsigned char *buf; 647 int i, len; 648 size_t min_size; 649 u8 opcode, length, data; 650 int project_id = -1; 651 const unsigned char *fwptr, *chip_id_base; 652 const unsigned char *patch_length_base, *patch_offset_base; 653 u32 patch_offset = 0; 654 u16 patch_length, num_patches; 655 static const struct { 656 __u16 lmp_subver; 657 __u8 id; 658 } project_id_to_lmp_subver[] = { 659 { RTL_ROM_LMP_8723A, 0 }, 660 { RTL_ROM_LMP_8723B, 1 }, 661 { RTL_ROM_LMP_8821A, 2 }, 662 { RTL_ROM_LMP_8761A, 3 }, 663 { RTL_ROM_LMP_8703B, 7 }, 664 { RTL_ROM_LMP_8822B, 8 }, 665 { RTL_ROM_LMP_8723B, 9 }, /* 8723D */ 666 { RTL_ROM_LMP_8821A, 10 }, /* 8821C */ 667 { RTL_ROM_LMP_8822B, 13 }, /* 8822C */ 668 { RTL_ROM_LMP_8761A, 14 }, /* 8761B */ 669 { RTL_ROM_LMP_8852A, 18 }, /* 8852A */ 670 { RTL_ROM_LMP_8852A, 20 }, /* 8852B */ 671 { RTL_ROM_LMP_8852A, 25 }, /* 8852C */ 672 { RTL_ROM_LMP_8851B, 36 }, /* 8851B */ 673 { RTL_ROM_LMP_8922A, 44 }, /* 8922A */ 674 { RTL_ROM_LMP_8852A, 47 }, /* 8852BT */ 675 { RTL_ROM_LMP_8761A, 51 }, /* 8761C */ 676 }; 677 678 if (btrtl_dev->fw_len <= 8) 679 return -EINVAL; 680 681 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) 682 min_size = sizeof(struct rtl_epatch_header) + 683 sizeof(extension_sig) + 3; 684 else if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) 685 min_size = sizeof(struct rtl_epatch_header_v2) + 686 sizeof(extension_sig) + 3; 687 else 688 return -EINVAL; 689 690 if (btrtl_dev->fw_len < min_size) 691 return -EINVAL; 692 693 fwptr = btrtl_dev->fw_data + btrtl_dev->fw_len - sizeof(extension_sig); 694 if (memcmp(fwptr, extension_sig, sizeof(extension_sig)) != 0) { 695 rtl_dev_err(hdev, "extension section signature mismatch"); 696 return -EINVAL; 697 } 698 699 /* Loop from the end of the firmware parsing instructions, until 700 * we find an instruction that identifies the "project ID" for the 701 * hardware supported by this firmware file. 702 * Once we have that, we double-check that project_id is suitable 703 * for the hardware we are working with. 704 */ 705 while (fwptr >= btrtl_dev->fw_data + (sizeof(*epatch_info) + 3)) { 706 opcode = *--fwptr; 707 length = *--fwptr; 708 data = *--fwptr; 709 710 BT_DBG("check op=%x len=%x data=%x", opcode, length, data); 711 712 if (opcode == 0xff) /* EOF */ 713 break; 714 715 if (length == 0) { 716 rtl_dev_err(hdev, "found instruction with length 0"); 717 return -EINVAL; 718 } 719 720 if (opcode == 0 && length == 1) { 721 project_id = data; 722 break; 723 } 724 725 fwptr -= length; 726 } 727 728 if (project_id < 0) { 729 rtl_dev_err(hdev, "failed to find version instruction"); 730 return -EINVAL; 731 } 732 733 /* Find project_id in table */ 734 for (i = 0; i < ARRAY_SIZE(project_id_to_lmp_subver); i++) { 735 if (project_id == project_id_to_lmp_subver[i].id) { 736 btrtl_dev->project_id = project_id; 737 break; 738 } 739 } 740 741 if (i >= ARRAY_SIZE(project_id_to_lmp_subver)) { 742 rtl_dev_err(hdev, "unknown project id %d", project_id); 743 return -EINVAL; 744 } 745 746 if (btrtl_dev->ic_info->lmp_subver != 747 project_id_to_lmp_subver[i].lmp_subver) { 748 rtl_dev_err(hdev, "firmware is for %x but this is a %x", 749 project_id_to_lmp_subver[i].lmp_subver, 750 btrtl_dev->ic_info->lmp_subver); 751 return -EINVAL; 752 } 753 754 if (memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8) != 0) { 755 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE_V2, 8)) 756 return rtlbt_parse_firmware_v2(hdev, btrtl_dev, _buf); 757 rtl_dev_err(hdev, "bad EPATCH signature"); 758 return -EINVAL; 759 } 760 761 epatch_info = (struct rtl_epatch_header *)btrtl_dev->fw_data; 762 num_patches = le16_to_cpu(epatch_info->num_patches); 763 764 BT_DBG("fw_version=%x, num_patches=%d", 765 le32_to_cpu(epatch_info->fw_version), num_patches); 766 coredump_info->rtl_dump.fw_version = le32_to_cpu(epatch_info->fw_version); 767 768 /* After the rtl_epatch_header there is a funky patch metadata section. 769 * Assuming 2 patches, the layout is: 770 * ChipID1 ChipID2 PatchLength1 PatchLength2 PatchOffset1 PatchOffset2 771 * 772 * Find the right patch for this chip. 773 */ 774 min_size += 8 * num_patches; 775 if (btrtl_dev->fw_len < min_size) 776 return -EINVAL; 777 778 chip_id_base = btrtl_dev->fw_data + sizeof(struct rtl_epatch_header); 779 patch_length_base = chip_id_base + (sizeof(u16) * num_patches); 780 patch_offset_base = patch_length_base + (sizeof(u16) * num_patches); 781 for (i = 0; i < num_patches; i++) { 782 u16 chip_id = get_unaligned_le16(chip_id_base + 783 (i * sizeof(u16))); 784 if (chip_id == btrtl_dev->rom_version + 1) { 785 patch_length = get_unaligned_le16(patch_length_base + 786 (i * sizeof(u16))); 787 patch_offset = get_unaligned_le32(patch_offset_base + 788 (i * sizeof(u32))); 789 break; 790 } 791 } 792 793 if (!patch_offset) { 794 rtl_dev_err(hdev, "didn't find patch for chip id %d", 795 btrtl_dev->rom_version); 796 return -EINVAL; 797 } 798 799 BT_DBG("length=%x offset=%x index %d", patch_length, patch_offset, i); 800 min_size = patch_offset + patch_length; 801 if (btrtl_dev->fw_len < min_size) 802 return -EINVAL; 803 804 /* Copy the firmware into a new buffer and write the version at 805 * the end. 806 */ 807 len = patch_length; 808 buf = kvmalloc(patch_length, GFP_KERNEL); 809 if (!buf) 810 return -ENOMEM; 811 812 memcpy(buf, btrtl_dev->fw_data + patch_offset, patch_length - 4); 813 memcpy(buf + patch_length - 4, &epatch_info->fw_version, 4); 814 815 *_buf = buf; 816 return len; 817} 818 819static int rtl_download_firmware(struct hci_dev *hdev, 820 const unsigned char *data, int fw_len) 821{ 822 struct rtl_download_cmd *dl_cmd; 823 int frag_num = fw_len / RTL_FRAG_LEN + 1; 824 int frag_len = RTL_FRAG_LEN; 825 int ret = 0; 826 int i; 827 int j = 0; 828 struct sk_buff *skb; 829 struct hci_rp_read_local_version *rp; 830 831 dl_cmd = kmalloc(sizeof(*dl_cmd), GFP_KERNEL); 832 if (!dl_cmd) 833 return -ENOMEM; 834 835 for (i = 0; i < frag_num; i++) { 836 struct sk_buff *skb; 837 838 dl_cmd->index = j++; 839 if (dl_cmd->index == 0x7f) 840 j = 1; 841 842 if (i == (frag_num - 1)) { 843 dl_cmd->index |= 0x80; /* data end */ 844 frag_len = fw_len % RTL_FRAG_LEN; 845 } 846 rtl_dev_dbg(hdev, "download fw (%d/%d). index = %d", i, 847 frag_num, dl_cmd->index); 848 memcpy(dl_cmd->data, data, frag_len); 849 850 /* Send download command */ 851 skb = __hci_cmd_sync(hdev, 0xfc20, frag_len + 1, dl_cmd, 852 HCI_INIT_TIMEOUT); 853 if (IS_ERR(skb)) { 854 rtl_dev_err(hdev, "download fw command failed (%ld)", 855 PTR_ERR(skb)); 856 ret = PTR_ERR(skb); 857 goto out; 858 } 859 860 if (skb->len != sizeof(struct rtl_download_response)) { 861 rtl_dev_err(hdev, "download fw event length mismatch"); 862 kfree_skb(skb); 863 ret = -EIO; 864 goto out; 865 } 866 867 kfree_skb(skb); 868 data += RTL_FRAG_LEN; 869 } 870 871 skb = btrtl_read_local_version(hdev); 872 if (IS_ERR(skb)) { 873 ret = PTR_ERR(skb); 874 rtl_dev_err(hdev, "read local version failed"); 875 goto out; 876 } 877 878 rp = (struct hci_rp_read_local_version *)skb->data; 879 rtl_dev_info(hdev, "fw version 0x%04x%04x", 880 __le16_to_cpu(rp->hci_rev), __le16_to_cpu(rp->lmp_subver)); 881 kfree_skb(skb); 882 883out: 884 kfree(dl_cmd); 885 return ret; 886} 887 888static int rtl_load_file(struct hci_dev *hdev, const char *name, u8 **buff) 889{ 890 const struct firmware *fw; 891 int ret; 892 893 rtl_dev_info(hdev, "loading %s", name); 894 ret = request_firmware(&fw, name, &hdev->dev); 895 if (ret < 0) 896 return ret; 897 ret = fw->size; 898 *buff = kvmemdup(fw->data, fw->size, GFP_KERNEL); 899 if (!*buff) 900 ret = -ENOMEM; 901 902 release_firmware(fw); 903 904 return ret; 905} 906 907static int btrtl_setup_rtl8723a(struct hci_dev *hdev, 908 struct btrtl_device_info *btrtl_dev) 909{ 910 if (btrtl_dev->fw_len < 8) 911 return -EINVAL; 912 913 /* Check that the firmware doesn't have the epatch signature 914 * (which is only for RTL8723B and newer). 915 */ 916 if (!memcmp(btrtl_dev->fw_data, RTL_EPATCH_SIGNATURE, 8)) { 917 rtl_dev_err(hdev, "unexpected EPATCH signature!"); 918 return -EINVAL; 919 } 920 921 return rtl_download_firmware(hdev, btrtl_dev->fw_data, 922 btrtl_dev->fw_len); 923} 924 925static int btrtl_setup_rtl8723b(struct hci_dev *hdev, 926 struct btrtl_device_info *btrtl_dev) 927{ 928 unsigned char *fw_data = NULL; 929 int ret; 930 u8 *tbuff; 931 932 ret = rtlbt_parse_firmware(hdev, btrtl_dev, &fw_data); 933 if (ret < 0) 934 goto out; 935 936 if (btrtl_dev->cfg_len > 0) { 937 tbuff = kvzalloc(ret + btrtl_dev->cfg_len, GFP_KERNEL); 938 if (!tbuff) { 939 ret = -ENOMEM; 940 goto out; 941 } 942 943 memcpy(tbuff, fw_data, ret); 944 kvfree(fw_data); 945 946 memcpy(tbuff + ret, btrtl_dev->cfg_data, btrtl_dev->cfg_len); 947 ret += btrtl_dev->cfg_len; 948 949 fw_data = tbuff; 950 } 951 952 rtl_dev_info(hdev, "cfg_sz %d, total sz %d", btrtl_dev->cfg_len, ret); 953 954 ret = rtl_download_firmware(hdev, fw_data, ret); 955 956out: 957 kvfree(fw_data); 958 return ret; 959} 960 961static void btrtl_coredump(struct hci_dev *hdev) 962{ 963 static const u8 param[] = { 0x00, 0x00 }; 964 965 __hci_cmd_send(hdev, RTL_VSC_OP_COREDUMP, sizeof(param), param); 966} 967 968static void btrtl_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb) 969{ 970 struct btrealtek_data *coredump_info = hci_get_priv(hdev); 971 char buf[80]; 972 973 if (coredump_info->rtl_dump.controller) 974 snprintf(buf, sizeof(buf), "Controller Name: %s\n", 975 coredump_info->rtl_dump.controller); 976 else 977 snprintf(buf, sizeof(buf), "Controller Name: Unknown\n"); 978 skb_put_data(skb, buf, strlen(buf)); 979 980 snprintf(buf, sizeof(buf), "Firmware Version: 0x%X\n", 981 coredump_info->rtl_dump.fw_version); 982 skb_put_data(skb, buf, strlen(buf)); 983 984 snprintf(buf, sizeof(buf), "Driver: %s\n", coredump_info->rtl_dump.driver_name); 985 skb_put_data(skb, buf, strlen(buf)); 986 987 snprintf(buf, sizeof(buf), "Vendor: Realtek\n"); 988 skb_put_data(skb, buf, strlen(buf)); 989} 990 991static void btrtl_register_devcoredump_support(struct hci_dev *hdev) 992{ 993 hci_devcd_register(hdev, btrtl_coredump, btrtl_dmp_hdr, NULL); 994 995} 996 997void btrtl_set_driver_name(struct hci_dev *hdev, const char *driver_name) 998{ 999 struct btrealtek_data *coredump_info = hci_get_priv(hdev); 1000 1001 coredump_info->rtl_dump.driver_name = driver_name; 1002} 1003EXPORT_SYMBOL_GPL(btrtl_set_driver_name); 1004 1005static bool rtl_has_chip_type(u16 lmp_subver) 1006{ 1007 switch (lmp_subver) { 1008 case RTL_ROM_LMP_8703B: 1009 return true; 1010 default: 1011 break; 1012 } 1013 1014 return false; 1015} 1016 1017static int rtl_read_chip_type(struct hci_dev *hdev, u8 *type) 1018{ 1019 struct rtl_chip_type_evt *chip_type; 1020 struct sk_buff *skb; 1021 const unsigned char cmd_buf[] = {0x00, 0x94, 0xa0, 0x00, 0xb0}; 1022 1023 /* Read RTL chip type command */ 1024 skb = __hci_cmd_sync(hdev, 0xfc61, 5, cmd_buf, HCI_INIT_TIMEOUT); 1025 if (IS_ERR(skb)) { 1026 rtl_dev_err(hdev, "Read chip type failed (%ld)", 1027 PTR_ERR(skb)); 1028 return PTR_ERR(skb); 1029 } 1030 1031 chip_type = skb_pull_data(skb, sizeof(*chip_type)); 1032 if (!chip_type) { 1033 rtl_dev_err(hdev, "RTL chip type event length mismatch"); 1034 kfree_skb(skb); 1035 return -EIO; 1036 } 1037 1038 rtl_dev_info(hdev, "chip_type status=%x type=%x", 1039 chip_type->status, chip_type->type); 1040 1041 *type = chip_type->type & 0x0f; 1042 1043 kfree_skb(skb); 1044 return 0; 1045} 1046 1047void btrtl_free(struct btrtl_device_info *btrtl_dev) 1048{ 1049 struct rtl_subsection *entry, *tmp; 1050 1051 kvfree(btrtl_dev->fw_data); 1052 kvfree(btrtl_dev->cfg_data); 1053 1054 list_for_each_entry_safe(entry, tmp, &btrtl_dev->patch_subsecs, list) { 1055 list_del(&entry->list); 1056 kfree(entry); 1057 } 1058 1059 kfree(btrtl_dev); 1060} 1061EXPORT_SYMBOL_GPL(btrtl_free); 1062 1063struct btrtl_device_info *btrtl_initialize(struct hci_dev *hdev, 1064 const char *postfix) 1065{ 1066 struct btrealtek_data *coredump_info = hci_get_priv(hdev); 1067 struct btrtl_device_info *btrtl_dev; 1068 struct sk_buff *skb; 1069 struct hci_rp_read_local_version *resp; 1070 struct hci_command_hdr *cmd; 1071 char fw_name[40]; 1072 char cfg_name[40]; 1073 u16 hci_rev, lmp_subver; 1074 u8 hci_ver, lmp_ver, chip_type = 0; 1075 int ret; 1076 int rc; 1077 u8 key_id; 1078 u8 reg_val[2]; 1079 1080 btrtl_dev = kzalloc(sizeof(*btrtl_dev), GFP_KERNEL); 1081 if (!btrtl_dev) { 1082 ret = -ENOMEM; 1083 goto err_alloc; 1084 } 1085 1086 INIT_LIST_HEAD(&btrtl_dev->patch_subsecs); 1087 1088check_version: 1089 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_SUBVER, reg_val); 1090 if (ret < 0) 1091 goto err_free; 1092 lmp_subver = get_unaligned_le16(reg_val); 1093 1094 if (lmp_subver == RTL_ROM_LMP_8822B) { 1095 ret = btrtl_vendor_read_reg16(hdev, RTL_CHIP_REV, reg_val); 1096 if (ret < 0) 1097 goto err_free; 1098 hci_rev = get_unaligned_le16(reg_val); 1099 1100 /* 8822E */ 1101 if (hci_rev == 0x000e) { 1102 hci_ver = 0x0c; 1103 lmp_ver = 0x0c; 1104 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, 1105 hci_ver, hdev->bus, 1106 chip_type); 1107 goto next; 1108 } 1109 } 1110 1111 skb = btrtl_read_local_version(hdev); 1112 if (IS_ERR(skb)) { 1113 ret = PTR_ERR(skb); 1114 goto err_free; 1115 } 1116 1117 resp = (struct hci_rp_read_local_version *)skb->data; 1118 1119 hci_ver = resp->hci_ver; 1120 hci_rev = le16_to_cpu(resp->hci_rev); 1121 lmp_ver = resp->lmp_ver; 1122 lmp_subver = le16_to_cpu(resp->lmp_subver); 1123 1124 kfree_skb(skb); 1125 1126 if (rtl_has_chip_type(lmp_subver)) { 1127 ret = rtl_read_chip_type(hdev, &chip_type); 1128 if (ret) 1129 goto err_free; 1130 } 1131 1132 btrtl_dev->ic_info = btrtl_match_ic(lmp_subver, hci_rev, hci_ver, 1133 hdev->bus, chip_type); 1134 1135next: 1136 rtl_dev_info(hdev, "examining hci_ver=%02x hci_rev=%04x lmp_ver=%02x lmp_subver=%04x", 1137 hci_ver, hci_rev, 1138 lmp_ver, lmp_subver); 1139 1140 if (!btrtl_dev->ic_info && !btrtl_dev->drop_fw) 1141 btrtl_dev->drop_fw = true; 1142 else 1143 btrtl_dev->drop_fw = false; 1144 1145 if (btrtl_dev->drop_fw) { 1146 skb = bt_skb_alloc(sizeof(*cmd), GFP_KERNEL); 1147 if (!skb) 1148 goto err_free; 1149 1150 cmd = skb_put(skb, HCI_COMMAND_HDR_SIZE); 1151 cmd->opcode = cpu_to_le16(0xfc66); 1152 cmd->plen = 0; 1153 1154 hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; 1155 1156 ret = hdev->send(hdev, skb); 1157 if (ret < 0) { 1158 bt_dev_err(hdev, "sending frame failed (%d)", ret); 1159 kfree_skb(skb); 1160 goto err_free; 1161 } 1162 1163 /* Ensure the above vendor command is sent to controller and 1164 * process has done. 1165 */ 1166 msleep(200); 1167 1168 goto check_version; 1169 } 1170 1171 if (!btrtl_dev->ic_info) { 1172 rtl_dev_info(hdev, "unknown IC info, lmp subver %04x, hci rev %04x, hci ver %04x", 1173 lmp_subver, hci_rev, hci_ver); 1174 return btrtl_dev; 1175 } 1176 1177 if (btrtl_dev->ic_info->has_rom_version) { 1178 ret = rtl_read_rom_version(hdev, &btrtl_dev->rom_version); 1179 if (ret) 1180 goto err_free; 1181 } 1182 1183 if (!btrtl_dev->ic_info->fw_name) { 1184 ret = -ENOMEM; 1185 goto err_free; 1186 } 1187 1188 rc = btrtl_vendor_read_reg16(hdev, RTL_SEC_PROJ, reg_val); 1189 if (rc < 0) 1190 goto err_free; 1191 1192 key_id = reg_val[0]; 1193 btrtl_dev->key_id = key_id; 1194 rtl_dev_info(hdev, "%s: key id %u", __func__, key_id); 1195 1196 btrtl_dev->fw_len = -EIO; 1197 if (lmp_subver == RTL_ROM_LMP_8852A && hci_rev == 0x000c) { 1198 snprintf(fw_name, sizeof(fw_name), "%s_v2.bin", 1199 btrtl_dev->ic_info->fw_name); 1200 btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, 1201 &btrtl_dev->fw_data); 1202 } 1203 1204 if (btrtl_dev->fw_len < 0) { 1205 snprintf(fw_name, sizeof(fw_name), "%s.bin", 1206 btrtl_dev->ic_info->fw_name); 1207 btrtl_dev->fw_len = rtl_load_file(hdev, fw_name, 1208 &btrtl_dev->fw_data); 1209 } 1210 1211 if (btrtl_dev->fw_len < 0) { 1212 rtl_dev_err(hdev, "firmware file %s not found", 1213 btrtl_dev->ic_info->fw_name); 1214 ret = btrtl_dev->fw_len; 1215 goto err_free; 1216 } 1217 1218 if (btrtl_dev->ic_info->cfg_name && !btrtl_dev->key_id) { 1219 if (postfix) { 1220 snprintf(cfg_name, sizeof(cfg_name), "%s-%s.bin", 1221 btrtl_dev->ic_info->cfg_name, postfix); 1222 } else { 1223 snprintf(cfg_name, sizeof(cfg_name), "%s.bin", 1224 btrtl_dev->ic_info->cfg_name); 1225 } 1226 btrtl_dev->cfg_len = rtl_load_file(hdev, cfg_name, 1227 &btrtl_dev->cfg_data); 1228 if (btrtl_dev->ic_info->config_needed && 1229 btrtl_dev->cfg_len <= 0) { 1230 rtl_dev_err(hdev, "mandatory config file %s not found", 1231 btrtl_dev->ic_info->cfg_name); 1232 ret = btrtl_dev->cfg_len; 1233 if (!ret) 1234 ret = -EINVAL; 1235 goto err_free; 1236 } 1237 } 1238 1239 /* The following chips supports the Microsoft vendor extension, 1240 * therefore set the corresponding VsMsftOpCode. 1241 */ 1242 if (btrtl_dev->ic_info->has_msft_ext) 1243 hci_set_msft_opcode(hdev, 0xFCF0); 1244 1245 if (btrtl_dev->ic_info) 1246 coredump_info->rtl_dump.controller = btrtl_dev->ic_info->hw_info; 1247 1248 return btrtl_dev; 1249 1250err_free: 1251 btrtl_free(btrtl_dev); 1252err_alloc: 1253 return ERR_PTR(ret); 1254} 1255EXPORT_SYMBOL_GPL(btrtl_initialize); 1256 1257int btrtl_download_firmware(struct hci_dev *hdev, 1258 struct btrtl_device_info *btrtl_dev) 1259{ 1260 int err = 0; 1261 1262 /* Match a set of subver values that correspond to stock firmware, 1263 * which is not compatible with standard btusb. 1264 * If matched, upload an alternative firmware that does conform to 1265 * standard btusb. Once that firmware is uploaded, the subver changes 1266 * to a different value. 1267 */ 1268 if (!btrtl_dev->ic_info) { 1269 rtl_dev_info(hdev, "assuming no firmware upload needed"); 1270 err = 0; 1271 goto done; 1272 } 1273 1274 switch (btrtl_dev->ic_info->lmp_subver) { 1275 case RTL_ROM_LMP_8723A: 1276 err = btrtl_setup_rtl8723a(hdev, btrtl_dev); 1277 break; 1278 case RTL_ROM_LMP_8723B: 1279 case RTL_ROM_LMP_8821A: 1280 case RTL_ROM_LMP_8761A: 1281 case RTL_ROM_LMP_8822B: 1282 case RTL_ROM_LMP_8852A: 1283 case RTL_ROM_LMP_8703B: 1284 case RTL_ROM_LMP_8851B: 1285 case RTL_ROM_LMP_8922A: 1286 err = btrtl_setup_rtl8723b(hdev, btrtl_dev); 1287 break; 1288 default: 1289 rtl_dev_info(hdev, "assuming no firmware upload needed"); 1290 break; 1291 } 1292 1293done: 1294 btrtl_register_devcoredump_support(hdev); 1295 1296 return err; 1297} 1298EXPORT_SYMBOL_GPL(btrtl_download_firmware); 1299 1300void btrtl_set_quirks(struct hci_dev *hdev, struct btrtl_device_info *btrtl_dev) 1301{ 1302 /* Enable controller to do both LE scan and BR/EDR inquiry 1303 * simultaneously. 1304 */ 1305 hci_set_quirk(hdev, HCI_QUIRK_SIMULTANEOUS_DISCOVERY); 1306 1307 /* Enable central-peripheral role (able to create new connections with 1308 * an existing connection in slave role). 1309 */ 1310 /* Enable WBS supported for the specific Realtek devices. */ 1311 switch (btrtl_dev->project_id) { 1312 case CHIP_ID_8822C: 1313 case CHIP_ID_8852A: 1314 case CHIP_ID_8852B: 1315 case CHIP_ID_8852C: 1316 case CHIP_ID_8851B: 1317 case CHIP_ID_8922A: 1318 case CHIP_ID_8852BT: 1319 case CHIP_ID_8761C: 1320 hci_set_quirk(hdev, HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED); 1321 1322 /* RTL8852C needs to transmit mSBC data continuously without 1323 * the zero length of USB packets for the ALT 6 supported chips 1324 */ 1325 if (btrtl_dev->project_id == CHIP_ID_8852C) 1326 btrealtek_set_flag(hdev, REALTEK_ALT6_CONTINUOUS_TX_CHIP); 1327 1328 if (btrtl_dev->project_id == CHIP_ID_8852A || 1329 btrtl_dev->project_id == CHIP_ID_8852B || 1330 btrtl_dev->project_id == CHIP_ID_8852C) 1331 hci_set_quirk(hdev, 1332 HCI_QUIRK_USE_MSFT_EXT_ADDRESS_FILTER); 1333 1334 hci_set_aosp_capable(hdev); 1335 break; 1336 default: 1337 rtl_dev_dbg(hdev, "Central-peripheral role not enabled."); 1338 rtl_dev_dbg(hdev, "WBS supported not enabled."); 1339 break; 1340 } 1341 1342 if (!btrtl_dev->ic_info) 1343 return; 1344 1345 switch (btrtl_dev->ic_info->lmp_subver) { 1346 case RTL_ROM_LMP_8703B: 1347 /* 8723CS reports two pages for local ext features, 1348 * but it doesn't support any features from page 2 - 1349 * it either responds with garbage or with error status 1350 */ 1351 hci_set_quirk(hdev, HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2); 1352 break; 1353 default: 1354 break; 1355 } 1356} 1357EXPORT_SYMBOL_GPL(btrtl_set_quirks); 1358 1359int btrtl_setup_realtek(struct hci_dev *hdev) 1360{ 1361 struct btrtl_device_info *btrtl_dev; 1362 int ret; 1363 1364 btrtl_dev = btrtl_initialize(hdev, NULL); 1365 if (IS_ERR(btrtl_dev)) 1366 return PTR_ERR(btrtl_dev); 1367 1368 ret = btrtl_download_firmware(hdev, btrtl_dev); 1369 1370 btrtl_set_quirks(hdev, btrtl_dev); 1371 1372 if (btrtl_dev->ic_info) { 1373 hci_set_hw_info(hdev, 1374 "RTL lmp_subver=%u hci_rev=%u hci_ver=%u hci_bus=%u", 1375 btrtl_dev->ic_info->lmp_subver, 1376 btrtl_dev->ic_info->hci_rev, 1377 btrtl_dev->ic_info->hci_ver, 1378 btrtl_dev->ic_info->hci_bus); 1379 } 1380 1381 btrtl_free(btrtl_dev); 1382 return ret; 1383} 1384EXPORT_SYMBOL_GPL(btrtl_setup_realtek); 1385 1386int btrtl_shutdown_realtek(struct hci_dev *hdev) 1387{ 1388 struct sk_buff *skb; 1389 int ret; 1390 1391 /* According to the vendor driver, BT must be reset on close to avoid 1392 * firmware crash. 1393 */ 1394 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_CMD_TIMEOUT); 1395 if (IS_ERR(skb)) { 1396 ret = PTR_ERR(skb); 1397 bt_dev_err(hdev, "HCI reset during shutdown failed"); 1398 return ret; 1399 } 1400 kfree_skb(skb); 1401 1402 return 0; 1403} 1404EXPORT_SYMBOL_GPL(btrtl_shutdown_realtek); 1405 1406static unsigned int btrtl_convert_baudrate(u32 device_baudrate) 1407{ 1408 switch (device_baudrate) { 1409 case 0x0252a00a: 1410 return 230400; 1411 1412 case 0x05f75004: 1413 return 921600; 1414 1415 case 0x00005004: 1416 return 1000000; 1417 1418 case 0x04928002: 1419 case 0x01128002: 1420 return 1500000; 1421 1422 case 0x00005002: 1423 return 2000000; 1424 1425 case 0x0000b001: 1426 return 2500000; 1427 1428 case 0x04928001: 1429 return 3000000; 1430 1431 case 0x052a6001: 1432 return 3500000; 1433 1434 case 0x00005001: 1435 return 4000000; 1436 1437 case 0x0252c014: 1438 default: 1439 return 115200; 1440 } 1441} 1442 1443int btrtl_get_uart_settings(struct hci_dev *hdev, 1444 struct btrtl_device_info *btrtl_dev, 1445 unsigned int *controller_baudrate, 1446 u32 *device_baudrate, bool *flow_control) 1447{ 1448 struct rtl_vendor_config *config; 1449 struct rtl_vendor_config_entry *entry; 1450 int i, total_data_len; 1451 bool found = false; 1452 1453 total_data_len = btrtl_dev->cfg_len - sizeof(*config); 1454 if (total_data_len <= 0) { 1455 rtl_dev_warn(hdev, "no config loaded"); 1456 return -EINVAL; 1457 } 1458 1459 config = (struct rtl_vendor_config *)btrtl_dev->cfg_data; 1460 if (le32_to_cpu(config->signature) != RTL_CONFIG_MAGIC) { 1461 rtl_dev_err(hdev, "invalid config magic"); 1462 return -EINVAL; 1463 } 1464 1465 if (total_data_len < le16_to_cpu(config->total_len)) { 1466 rtl_dev_err(hdev, "config is too short"); 1467 return -EINVAL; 1468 } 1469 1470 for (i = 0; i < total_data_len; ) { 1471 entry = ((void *)config->entry) + i; 1472 1473 switch (le16_to_cpu(entry->offset)) { 1474 case 0xc: 1475 if (entry->len < sizeof(*device_baudrate)) { 1476 rtl_dev_err(hdev, "invalid UART config entry"); 1477 return -EINVAL; 1478 } 1479 1480 *device_baudrate = get_unaligned_le32(entry->data); 1481 *controller_baudrate = btrtl_convert_baudrate( 1482 *device_baudrate); 1483 1484 if (entry->len >= 13) 1485 *flow_control = !!(entry->data[12] & BIT(2)); 1486 else 1487 *flow_control = false; 1488 1489 found = true; 1490 break; 1491 1492 default: 1493 rtl_dev_dbg(hdev, "skipping config entry 0x%x (len %u)", 1494 le16_to_cpu(entry->offset), entry->len); 1495 break; 1496 } 1497 1498 i += sizeof(*entry) + entry->len; 1499 } 1500 1501 if (!found) { 1502 rtl_dev_err(hdev, "no UART config entry found"); 1503 return -ENOENT; 1504 } 1505 1506 rtl_dev_dbg(hdev, "device baudrate = 0x%08x", *device_baudrate); 1507 rtl_dev_dbg(hdev, "controller baudrate = %u", *controller_baudrate); 1508 rtl_dev_dbg(hdev, "flow control %d", *flow_control); 1509 1510 return 0; 1511} 1512EXPORT_SYMBOL_GPL(btrtl_get_uart_settings); 1513 1514MODULE_AUTHOR("Daniel Drake <drake@endlessm.com>"); 1515MODULE_DESCRIPTION("Bluetooth support for Realtek devices ver " VERSION); 1516MODULE_VERSION(VERSION); 1517MODULE_LICENSE("GPL"); 1518MODULE_FIRMWARE("rtl_bt/rtl8723a_fw.bin"); 1519MODULE_FIRMWARE("rtl_bt/rtl8723b_fw.bin"); 1520MODULE_FIRMWARE("rtl_bt/rtl8723b_config.bin"); 1521MODULE_FIRMWARE("rtl_bt/rtl8723bs_fw.bin"); 1522MODULE_FIRMWARE("rtl_bt/rtl8723bs_config.bin"); 1523MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_fw.bin"); 1524MODULE_FIRMWARE("rtl_bt/rtl8723cs_cg_config.bin"); 1525MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_fw.bin"); 1526MODULE_FIRMWARE("rtl_bt/rtl8723cs_vf_config.bin"); 1527MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_fw.bin"); 1528MODULE_FIRMWARE("rtl_bt/rtl8723cs_xx_config.bin"); 1529MODULE_FIRMWARE("rtl_bt/rtl8723d_fw.bin"); 1530MODULE_FIRMWARE("rtl_bt/rtl8723d_config.bin"); 1531MODULE_FIRMWARE("rtl_bt/rtl8723ds_fw.bin"); 1532MODULE_FIRMWARE("rtl_bt/rtl8723ds_config.bin"); 1533MODULE_FIRMWARE("rtl_bt/rtl8761a_fw.bin"); 1534MODULE_FIRMWARE("rtl_bt/rtl8761a_config.bin"); 1535MODULE_FIRMWARE("rtl_bt/rtl8761b_fw.bin"); 1536MODULE_FIRMWARE("rtl_bt/rtl8761b_config.bin"); 1537MODULE_FIRMWARE("rtl_bt/rtl8761bu_fw.bin"); 1538MODULE_FIRMWARE("rtl_bt/rtl8761bu_config.bin"); 1539MODULE_FIRMWARE("rtl_bt/rtl8761cu_fw.bin"); 1540MODULE_FIRMWARE("rtl_bt/rtl8761cu_config.bin"); 1541MODULE_FIRMWARE("rtl_bt/rtl8821a_fw.bin"); 1542MODULE_FIRMWARE("rtl_bt/rtl8821a_config.bin"); 1543MODULE_FIRMWARE("rtl_bt/rtl8821c_fw.bin"); 1544MODULE_FIRMWARE("rtl_bt/rtl8821c_config.bin"); 1545MODULE_FIRMWARE("rtl_bt/rtl8821cs_fw.bin"); 1546MODULE_FIRMWARE("rtl_bt/rtl8821cs_config.bin"); 1547MODULE_FIRMWARE("rtl_bt/rtl8822b_fw.bin"); 1548MODULE_FIRMWARE("rtl_bt/rtl8822b_config.bin"); 1549MODULE_FIRMWARE("rtl_bt/rtl8822cs_fw.bin"); 1550MODULE_FIRMWARE("rtl_bt/rtl8822cs_config.bin"); 1551MODULE_FIRMWARE("rtl_bt/rtl8822cu_fw.bin"); 1552MODULE_FIRMWARE("rtl_bt/rtl8822cu_config.bin"); 1553MODULE_FIRMWARE("rtl_bt/rtl8851bu_fw.bin"); 1554MODULE_FIRMWARE("rtl_bt/rtl8851bu_config.bin"); 1555MODULE_FIRMWARE("rtl_bt/rtl8852au_fw.bin"); 1556MODULE_FIRMWARE("rtl_bt/rtl8852au_config.bin"); 1557MODULE_FIRMWARE("rtl_bt/rtl8852bs_fw.bin"); 1558MODULE_FIRMWARE("rtl_bt/rtl8852bs_config.bin"); 1559MODULE_FIRMWARE("rtl_bt/rtl8852bu_fw.bin"); 1560MODULE_FIRMWARE("rtl_bt/rtl8852bu_config.bin"); 1561MODULE_FIRMWARE("rtl_bt/rtl8852btu_fw.bin"); 1562MODULE_FIRMWARE("rtl_bt/rtl8852btu_config.bin"); 1563MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw.bin"); 1564MODULE_FIRMWARE("rtl_bt/rtl8852cu_fw_v2.bin"); 1565MODULE_FIRMWARE("rtl_bt/rtl8852cu_config.bin"); 1566MODULE_FIRMWARE("rtl_bt/rtl8922au_fw.bin"); 1567MODULE_FIRMWARE("rtl_bt/rtl8922au_config.bin");
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