1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * 4 * Bluetooth support for Broadcom devices 5 * 6 * Copyright (C) 2015 Intel Corporation 7 */ 8 9 #include <linux/module.h> 10 #include <linux/firmware.h> 11 #include <asm/unaligned.h> 12 13 #include <net/bluetooth/bluetooth.h> 14 #include <net/bluetooth/hci_core.h> 15 16 #include "btbcm.h" 17 18 #define VERSION "0.1" 19 20 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) 21 #define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}}) 22 #define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}}) 23 #define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}}) 24 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}}) 25 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}}) 26 #define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}}) 27 #define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}}) 28 #define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}}) 29 30 #define BCM_FW_NAME_LEN 64 31 #define BCM_FW_NAME_COUNT_MAX 2 32 /* For kmalloc-ing the fw-name array instead of putting it on the stack */ 33 typedef char bcm_fw_name[BCM_FW_NAME_LEN]; 34 35 int btbcm_check_bdaddr(struct hci_dev *hdev) 36 { 37 struct hci_rp_read_bd_addr *bda; 38 struct sk_buff *skb; 39 40 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, 41 HCI_INIT_TIMEOUT); 42 if (IS_ERR(skb)) { 43 int err = PTR_ERR(skb); 44 45 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err); 46 return err; 47 } 48 49 if (skb->len != sizeof(*bda)) { 50 bt_dev_err(hdev, "BCM: Device address length mismatch"); 51 kfree_skb(skb); 52 return -EIO; 53 } 54 55 bda = (struct hci_rp_read_bd_addr *)skb->data; 56 57 /* Check if the address indicates a controller with either an 58 * invalid or default address. In both cases the device needs 59 * to be marked as not having a valid address. 60 * 61 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller 62 * with no configured address. 63 * 64 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller 65 * with no configured address. 66 * 67 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller 68 * with no configured address. 69 * 70 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller 71 * with waiting for configuration state. 72 * 73 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller 74 * with waiting for configuration state. 75 * 76 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller 77 * with no configured address. 78 */ 79 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) || 80 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || 81 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) || 82 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || 83 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || 84 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) || 85 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) || 86 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || 87 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) { 88 bt_dev_info(hdev, "BCM: Using default device address (%pMR)", 89 &bda->bdaddr); 90 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 91 } 92 93 kfree_skb(skb); 94 95 return 0; 96 } 97 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); 98 99 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 100 { 101 struct sk_buff *skb; 102 int err; 103 104 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); 105 if (IS_ERR(skb)) { 106 err = PTR_ERR(skb); 107 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err); 108 return err; 109 } 110 kfree_skb(skb); 111 112 return 0; 113 } 114 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); 115 116 int btbcm_read_pcm_int_params(struct hci_dev *hdev, 117 struct bcm_set_pcm_int_params *params) 118 { 119 struct sk_buff *skb; 120 int err = 0; 121 122 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); 123 if (IS_ERR(skb)) { 124 err = PTR_ERR(skb); 125 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); 126 return err; 127 } 128 129 if (skb->len != 6 || skb->data[0]) { 130 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); 131 kfree_skb(skb); 132 return -EIO; 133 } 134 135 if (params) 136 memcpy(params, skb->data + 1, 5); 137 138 kfree_skb(skb); 139 140 return 0; 141 } 142 EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); 143 144 int btbcm_write_pcm_int_params(struct hci_dev *hdev, 145 const struct bcm_set_pcm_int_params *params) 146 { 147 struct sk_buff *skb; 148 int err; 149 150 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); 151 if (IS_ERR(skb)) { 152 err = PTR_ERR(skb); 153 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); 154 return err; 155 } 156 kfree_skb(skb); 157 158 return 0; 159 } 160 EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); 161 162 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) 163 { 164 const struct hci_command_hdr *cmd; 165 const u8 *fw_ptr; 166 size_t fw_size; 167 struct sk_buff *skb; 168 u16 opcode; 169 int err = 0; 170 171 /* Start Download */ 172 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); 173 if (IS_ERR(skb)) { 174 err = PTR_ERR(skb); 175 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)", 176 err); 177 goto done; 178 } 179 kfree_skb(skb); 180 181 /* 50 msec delay after Download Minidrv completes */ 182 msleep(50); 183 184 fw_ptr = fw->data; 185 fw_size = fw->size; 186 187 while (fw_size >= sizeof(*cmd)) { 188 const u8 *cmd_param; 189 190 cmd = (struct hci_command_hdr *)fw_ptr; 191 fw_ptr += sizeof(*cmd); 192 fw_size -= sizeof(*cmd); 193 194 if (fw_size < cmd->plen) { 195 bt_dev_err(hdev, "BCM: Patch is corrupted"); 196 err = -EINVAL; 197 goto done; 198 } 199 200 cmd_param = fw_ptr; 201 fw_ptr += cmd->plen; 202 fw_size -= cmd->plen; 203 204 opcode = le16_to_cpu(cmd->opcode); 205 206 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param, 207 HCI_INIT_TIMEOUT); 208 if (IS_ERR(skb)) { 209 err = PTR_ERR(skb); 210 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)", 211 opcode, err); 212 goto done; 213 } 214 kfree_skb(skb); 215 } 216 217 /* 250 msec delay after Launch Ram completes */ 218 msleep(250); 219 220 done: 221 return err; 222 } 223 EXPORT_SYMBOL(btbcm_patchram); 224 225 static int btbcm_reset(struct hci_dev *hdev) 226 { 227 struct sk_buff *skb; 228 229 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 230 if (IS_ERR(skb)) { 231 int err = PTR_ERR(skb); 232 233 bt_dev_err(hdev, "BCM: Reset failed (%d)", err); 234 return err; 235 } 236 kfree_skb(skb); 237 238 /* 100 msec delay for module to complete reset process */ 239 msleep(100); 240 241 return 0; 242 } 243 244 static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev) 245 { 246 struct sk_buff *skb; 247 248 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL, 249 HCI_INIT_TIMEOUT); 250 if (IS_ERR(skb)) { 251 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)", 252 PTR_ERR(skb)); 253 return skb; 254 } 255 256 if (skb->len != sizeof(struct hci_rp_read_local_name)) { 257 bt_dev_err(hdev, "BCM: Local name length mismatch"); 258 kfree_skb(skb); 259 return ERR_PTR(-EIO); 260 } 261 262 return skb; 263 } 264 265 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev) 266 { 267 struct sk_buff *skb; 268 269 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 270 HCI_INIT_TIMEOUT); 271 if (IS_ERR(skb)) { 272 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)", 273 PTR_ERR(skb)); 274 return skb; 275 } 276 277 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 278 bt_dev_err(hdev, "BCM: Local version length mismatch"); 279 kfree_skb(skb); 280 return ERR_PTR(-EIO); 281 } 282 283 return skb; 284 } 285 286 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev) 287 { 288 struct sk_buff *skb; 289 290 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT); 291 if (IS_ERR(skb)) { 292 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)", 293 PTR_ERR(skb)); 294 return skb; 295 } 296 297 if (skb->len != 7) { 298 bt_dev_err(hdev, "BCM: Verbose config length mismatch"); 299 kfree_skb(skb); 300 return ERR_PTR(-EIO); 301 } 302 303 return skb; 304 } 305 306 static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev) 307 { 308 struct sk_buff *skb; 309 310 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT); 311 if (IS_ERR(skb)) { 312 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)", 313 PTR_ERR(skb)); 314 return skb; 315 } 316 317 if (skb->len != 9) { 318 bt_dev_err(hdev, "BCM: Controller features length mismatch"); 319 kfree_skb(skb); 320 return ERR_PTR(-EIO); 321 } 322 323 return skb; 324 } 325 326 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev) 327 { 328 struct sk_buff *skb; 329 330 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT); 331 if (IS_ERR(skb)) { 332 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)", 333 PTR_ERR(skb)); 334 return skb; 335 } 336 337 if (skb->len != 5) { 338 bt_dev_err(hdev, "BCM: USB product length mismatch"); 339 kfree_skb(skb); 340 return ERR_PTR(-EIO); 341 } 342 343 return skb; 344 } 345 346 static int btbcm_read_info(struct hci_dev *hdev) 347 { 348 struct sk_buff *skb; 349 350 /* Read Verbose Config Version Info */ 351 skb = btbcm_read_verbose_config(hdev); 352 if (IS_ERR(skb)) 353 return PTR_ERR(skb); 354 355 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]); 356 kfree_skb(skb); 357 358 /* Read Controller Features */ 359 skb = btbcm_read_controller_features(hdev); 360 if (IS_ERR(skb)) 361 return PTR_ERR(skb); 362 363 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 364 kfree_skb(skb); 365 366 return 0; 367 } 368 369 static int btbcm_print_local_name(struct hci_dev *hdev) 370 { 371 struct sk_buff *skb; 372 373 /* Read Local Name */ 374 skb = btbcm_read_local_name(hdev); 375 if (IS_ERR(skb)) 376 return PTR_ERR(skb); 377 378 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 379 kfree_skb(skb); 380 381 return 0; 382 } 383 384 struct bcm_subver_table { 385 u16 subver; 386 const char *name; 387 }; 388 389 static const struct bcm_subver_table bcm_uart_subver_table[] = { 390 { 0x4103, "BCM4330B1" }, /* 002.001.003 */ 391 { 0x410d, "BCM4334B0" }, /* 002.001.013 */ 392 { 0x410e, "BCM43341B0" }, /* 002.001.014 */ 393 { 0x4204, "BCM2076B1" }, /* 002.002.004 */ 394 { 0x4406, "BCM4324B3" }, /* 002.004.006 */ 395 { 0x4606, "BCM4324B5" }, /* 002.006.006 */ 396 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 397 { 0x610c, "BCM4354" }, /* 003.001.012 */ 398 { 0x2122, "BCM4343A0" }, /* 001.001.034 */ 399 { 0x2209, "BCM43430A1" }, /* 001.002.009 */ 400 { 0x6119, "BCM4345C0" }, /* 003.001.025 */ 401 { 0x6606, "BCM4345C5" }, /* 003.006.006 */ 402 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 403 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 404 { 0x4217, "BCM4329B1" }, /* 002.002.023 */ 405 { 0x6106, "BCM4359C0" }, /* 003.001.006 */ 406 { 0x4106, "BCM4335A0" }, /* 002.001.006 */ 407 { 0x410c, "BCM43430B0" }, /* 002.001.012 */ 408 { } 409 }; 410 411 static const struct bcm_subver_table bcm_usb_subver_table[] = { 412 { 0x2105, "BCM20703A1" }, /* 001.001.005 */ 413 { 0x210b, "BCM43142A0" }, /* 001.001.011 */ 414 { 0x2112, "BCM4314A0" }, /* 001.001.018 */ 415 { 0x2118, "BCM20702A0" }, /* 001.001.024 */ 416 { 0x2126, "BCM4335A0" }, /* 001.001.038 */ 417 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 418 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 419 { 0x4106, "BCM4335B0" }, /* 002.001.006 */ 420 { 0x410e, "BCM20702B0" }, /* 002.001.014 */ 421 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 422 { 0x610c, "BCM4354" }, /* 003.001.012 */ 423 { 0x6607, "BCM4350C5" }, /* 003.006.007 */ 424 { } 425 }; 426 427 int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done) 428 { 429 u16 subver, rev, pid, vid; 430 struct sk_buff *skb; 431 struct hci_rp_read_local_version *ver; 432 const struct bcm_subver_table *bcm_subver_table; 433 const char *hw_name = NULL; 434 char postfix[16] = ""; 435 int fw_name_count = 0; 436 bcm_fw_name *fw_name; 437 const struct firmware *fw; 438 int i, err; 439 440 /* Reset */ 441 err = btbcm_reset(hdev); 442 if (err) 443 return err; 444 445 /* Read Local Version Info */ 446 skb = btbcm_read_local_version(hdev); 447 if (IS_ERR(skb)) 448 return PTR_ERR(skb); 449 450 ver = (struct hci_rp_read_local_version *)skb->data; 451 rev = le16_to_cpu(ver->hci_rev); 452 subver = le16_to_cpu(ver->lmp_subver); 453 kfree_skb(skb); 454 455 /* Read controller information */ 456 if (!(*fw_load_done)) { 457 err = btbcm_read_info(hdev); 458 if (err) 459 return err; 460 } 461 err = btbcm_print_local_name(hdev); 462 if (err) 463 return err; 464 465 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table : 466 bcm_uart_subver_table; 467 468 for (i = 0; bcm_subver_table[i].name; i++) { 469 if (subver == bcm_subver_table[i].subver) { 470 hw_name = bcm_subver_table[i].name; 471 break; 472 } 473 } 474 475 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u", 476 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13, 477 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff); 478 479 if (*fw_load_done) 480 return 0; 481 482 if (hdev->bus == HCI_USB) { 483 /* Read USB Product Info */ 484 skb = btbcm_read_usb_product(hdev); 485 if (IS_ERR(skb)) 486 return PTR_ERR(skb); 487 488 vid = get_unaligned_le16(skb->data + 1); 489 pid = get_unaligned_le16(skb->data + 3); 490 kfree_skb(skb); 491 492 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid); 493 } 494 495 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL); 496 if (!fw_name) 497 return -ENOMEM; 498 499 if (hw_name) { 500 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 501 "brcm/%s%s.hcd", hw_name, postfix); 502 fw_name_count++; 503 } 504 505 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 506 "brcm/BCM%s.hcd", postfix); 507 fw_name_count++; 508 509 for (i = 0; i < fw_name_count; i++) { 510 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev); 511 if (err == 0) { 512 bt_dev_info(hdev, "%s '%s' Patch", 513 hw_name ? hw_name : "BCM", fw_name[i]); 514 *fw_load_done = true; 515 break; 516 } 517 } 518 519 if (*fw_load_done) { 520 err = btbcm_patchram(hdev, fw); 521 if (err) 522 bt_dev_info(hdev, "BCM: Patch failed (%d)", err); 523 524 release_firmware(fw); 525 } else { 526 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:"); 527 for (i = 0; i < fw_name_count; i++) 528 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]); 529 } 530 531 kfree(fw_name); 532 return 0; 533 } 534 EXPORT_SYMBOL_GPL(btbcm_initialize); 535 536 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done) 537 { 538 int err; 539 540 /* Re-initialize if necessary */ 541 if (*fw_load_done) { 542 err = btbcm_initialize(hdev, fw_load_done); 543 if (err) 544 return err; 545 } 546 547 btbcm_check_bdaddr(hdev); 548 549 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 550 551 return 0; 552 } 553 EXPORT_SYMBOL_GPL(btbcm_finalize); 554 555 int btbcm_setup_patchram(struct hci_dev *hdev) 556 { 557 bool fw_load_done = false; 558 int err; 559 560 /* Initialize */ 561 err = btbcm_initialize(hdev, &fw_load_done); 562 if (err) 563 return err; 564 565 /* Re-initialize after loading Patch */ 566 return btbcm_finalize(hdev, &fw_load_done); 567 } 568 EXPORT_SYMBOL_GPL(btbcm_setup_patchram); 569 570 int btbcm_setup_apple(struct hci_dev *hdev) 571 { 572 struct sk_buff *skb; 573 int err; 574 575 /* Reset */ 576 err = btbcm_reset(hdev); 577 if (err) 578 return err; 579 580 /* Read Verbose Config Version Info */ 581 skb = btbcm_read_verbose_config(hdev); 582 if (!IS_ERR(skb)) { 583 bt_dev_info(hdev, "BCM: chip id %u build %4.4u", 584 skb->data[1], get_unaligned_le16(skb->data + 5)); 585 kfree_skb(skb); 586 } 587 588 /* Read USB Product Info */ 589 skb = btbcm_read_usb_product(hdev); 590 if (!IS_ERR(skb)) { 591 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x", 592 get_unaligned_le16(skb->data + 1), 593 get_unaligned_le16(skb->data + 3)); 594 kfree_skb(skb); 595 } 596 597 /* Read Controller Features */ 598 skb = btbcm_read_controller_features(hdev); 599 if (!IS_ERR(skb)) { 600 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 601 kfree_skb(skb); 602 } 603 604 /* Read Local Name */ 605 skb = btbcm_read_local_name(hdev); 606 if (!IS_ERR(skb)) { 607 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 608 kfree_skb(skb); 609 } 610 611 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 612 613 return 0; 614 } 615 EXPORT_SYMBOL_GPL(btbcm_setup_apple); 616 617 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 618 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); 619 MODULE_VERSION(VERSION); 620 MODULE_LICENSE("GPL"); 621