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/efi.h> 10 #include <linux/module.h> 11 #include <linux/firmware.h> 12 #include <linux/dmi.h> 13 #include <linux/of.h> 14 #include <asm/unaligned.h> 15 16 #include <net/bluetooth/bluetooth.h> 17 #include <net/bluetooth/hci_core.h> 18 19 #include "btbcm.h" 20 21 #define VERSION "0.1" 22 23 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) 24 #define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}}) 25 #define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}}) 26 #define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}}) 27 #define BDADDR_BCM43430A1 (&(bdaddr_t) {{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa}}) 28 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}}) 29 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}}) 30 #define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}}) 31 #define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}}) 32 #define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}}) 33 34 #define BCM_FW_NAME_LEN 64 35 #define BCM_FW_NAME_COUNT_MAX 4 36 /* For kmalloc-ing the fw-name array instead of putting it on the stack */ 37 typedef char bcm_fw_name[BCM_FW_NAME_LEN]; 38 39 #ifdef CONFIG_EFI 40 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 41 { 42 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f, 43 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13); 44 bdaddr_t efi_bdaddr, bdaddr; 45 efi_status_t status; 46 unsigned long len; 47 int ret; 48 49 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 50 return -EOPNOTSUPP; 51 52 len = sizeof(efi_bdaddr); 53 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr); 54 if (status != EFI_SUCCESS) 55 return -ENXIO; 56 57 if (len != sizeof(efi_bdaddr)) 58 return -EIO; 59 60 baswap(&bdaddr, &efi_bdaddr); 61 62 ret = btbcm_set_bdaddr(hdev, &bdaddr); 63 if (ret) 64 return ret; 65 66 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr); 67 return 0; 68 } 69 #else 70 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 71 { 72 return -EOPNOTSUPP; 73 } 74 #endif 75 76 int btbcm_check_bdaddr(struct hci_dev *hdev) 77 { 78 struct hci_rp_read_bd_addr *bda; 79 struct sk_buff *skb; 80 81 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, 82 HCI_INIT_TIMEOUT); 83 if (IS_ERR(skb)) { 84 int err = PTR_ERR(skb); 85 86 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err); 87 return err; 88 } 89 90 if (skb->len != sizeof(*bda)) { 91 bt_dev_err(hdev, "BCM: Device address length mismatch"); 92 kfree_skb(skb); 93 return -EIO; 94 } 95 96 bda = (struct hci_rp_read_bd_addr *)skb->data; 97 98 /* Check if the address indicates a controller with either an 99 * invalid or default address. In both cases the device needs 100 * to be marked as not having a valid address. 101 * 102 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller 103 * with no configured address. 104 * 105 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller 106 * with no configured address. 107 * 108 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller 109 * with no configured address. 110 * 111 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller 112 * with waiting for configuration state. 113 * 114 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller 115 * with waiting for configuration state. 116 * 117 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller 118 * with no configured address. 119 * 120 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller 121 * with no configured address. 122 */ 123 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) || 124 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || 125 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) || 126 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || 127 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || 128 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) || 129 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) || 130 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || 131 !bacmp(&bda->bdaddr, BDADDR_BCM43430A1) || 132 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) { 133 /* Try falling back to BDADDR EFI variable */ 134 if (btbcm_set_bdaddr_from_efi(hdev) != 0) { 135 bt_dev_info(hdev, "BCM: Using default device address (%pMR)", 136 &bda->bdaddr); 137 set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks); 138 } 139 } 140 141 kfree_skb(skb); 142 143 return 0; 144 } 145 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); 146 147 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 148 { 149 struct sk_buff *skb; 150 int err; 151 152 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); 153 if (IS_ERR(skb)) { 154 err = PTR_ERR(skb); 155 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err); 156 return err; 157 } 158 kfree_skb(skb); 159 160 return 0; 161 } 162 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); 163 164 int btbcm_read_pcm_int_params(struct hci_dev *hdev, 165 struct bcm_set_pcm_int_params *params) 166 { 167 struct sk_buff *skb; 168 int err = 0; 169 170 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); 171 if (IS_ERR(skb)) { 172 err = PTR_ERR(skb); 173 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); 174 return err; 175 } 176 177 if (skb->len != 6 || skb->data[0]) { 178 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); 179 kfree_skb(skb); 180 return -EIO; 181 } 182 183 if (params) 184 memcpy(params, skb->data + 1, 5); 185 186 kfree_skb(skb); 187 188 return 0; 189 } 190 EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); 191 192 int btbcm_write_pcm_int_params(struct hci_dev *hdev, 193 const struct bcm_set_pcm_int_params *params) 194 { 195 struct sk_buff *skb; 196 int err; 197 198 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); 199 if (IS_ERR(skb)) { 200 err = PTR_ERR(skb); 201 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); 202 return err; 203 } 204 kfree_skb(skb); 205 206 return 0; 207 } 208 EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); 209 210 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) 211 { 212 const struct hci_command_hdr *cmd; 213 const u8 *fw_ptr; 214 size_t fw_size; 215 struct sk_buff *skb; 216 u16 opcode; 217 int err = 0; 218 219 /* Start Download */ 220 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); 221 if (IS_ERR(skb)) { 222 err = PTR_ERR(skb); 223 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)", 224 err); 225 goto done; 226 } 227 kfree_skb(skb); 228 229 /* 50 msec delay after Download Minidrv completes */ 230 msleep(50); 231 232 fw_ptr = fw->data; 233 fw_size = fw->size; 234 235 while (fw_size >= sizeof(*cmd)) { 236 const u8 *cmd_param; 237 238 cmd = (struct hci_command_hdr *)fw_ptr; 239 fw_ptr += sizeof(*cmd); 240 fw_size -= sizeof(*cmd); 241 242 if (fw_size < cmd->plen) { 243 bt_dev_err(hdev, "BCM: Patch is corrupted"); 244 err = -EINVAL; 245 goto done; 246 } 247 248 cmd_param = fw_ptr; 249 fw_ptr += cmd->plen; 250 fw_size -= cmd->plen; 251 252 opcode = le16_to_cpu(cmd->opcode); 253 254 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param, 255 HCI_INIT_TIMEOUT); 256 if (IS_ERR(skb)) { 257 err = PTR_ERR(skb); 258 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)", 259 opcode, err); 260 goto done; 261 } 262 kfree_skb(skb); 263 } 264 265 /* 250 msec delay after Launch Ram completes */ 266 msleep(250); 267 268 done: 269 return err; 270 } 271 EXPORT_SYMBOL(btbcm_patchram); 272 273 static int btbcm_reset(struct hci_dev *hdev) 274 { 275 struct sk_buff *skb; 276 277 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 278 if (IS_ERR(skb)) { 279 int err = PTR_ERR(skb); 280 281 bt_dev_err(hdev, "BCM: Reset failed (%d)", err); 282 return err; 283 } 284 kfree_skb(skb); 285 286 /* 100 msec delay for module to complete reset process */ 287 msleep(100); 288 289 return 0; 290 } 291 292 static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev) 293 { 294 struct sk_buff *skb; 295 296 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL, 297 HCI_INIT_TIMEOUT); 298 if (IS_ERR(skb)) { 299 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)", 300 PTR_ERR(skb)); 301 return skb; 302 } 303 304 if (skb->len != sizeof(struct hci_rp_read_local_name)) { 305 bt_dev_err(hdev, "BCM: Local name length mismatch"); 306 kfree_skb(skb); 307 return ERR_PTR(-EIO); 308 } 309 310 return skb; 311 } 312 313 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev) 314 { 315 struct sk_buff *skb; 316 317 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 318 HCI_INIT_TIMEOUT); 319 if (IS_ERR(skb)) { 320 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)", 321 PTR_ERR(skb)); 322 return skb; 323 } 324 325 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 326 bt_dev_err(hdev, "BCM: Local version length mismatch"); 327 kfree_skb(skb); 328 return ERR_PTR(-EIO); 329 } 330 331 return skb; 332 } 333 334 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev) 335 { 336 struct sk_buff *skb; 337 338 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT); 339 if (IS_ERR(skb)) { 340 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)", 341 PTR_ERR(skb)); 342 return skb; 343 } 344 345 if (skb->len != 7) { 346 bt_dev_err(hdev, "BCM: Verbose config length mismatch"); 347 kfree_skb(skb); 348 return ERR_PTR(-EIO); 349 } 350 351 return skb; 352 } 353 354 static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev) 355 { 356 struct sk_buff *skb; 357 358 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT); 359 if (IS_ERR(skb)) { 360 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)", 361 PTR_ERR(skb)); 362 return skb; 363 } 364 365 if (skb->len != 9) { 366 bt_dev_err(hdev, "BCM: Controller features length mismatch"); 367 kfree_skb(skb); 368 return ERR_PTR(-EIO); 369 } 370 371 return skb; 372 } 373 374 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev) 375 { 376 struct sk_buff *skb; 377 378 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT); 379 if (IS_ERR(skb)) { 380 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)", 381 PTR_ERR(skb)); 382 return skb; 383 } 384 385 if (skb->len != 5) { 386 bt_dev_err(hdev, "BCM: USB product length mismatch"); 387 kfree_skb(skb); 388 return ERR_PTR(-EIO); 389 } 390 391 return skb; 392 } 393 394 static const struct dmi_system_id disable_broken_read_transmit_power[] = { 395 { 396 .matches = { 397 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 398 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"), 399 }, 400 }, 401 { 402 .matches = { 403 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 404 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"), 405 }, 406 }, 407 { 408 .matches = { 409 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 410 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"), 411 }, 412 }, 413 { 414 .matches = { 415 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 416 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"), 417 }, 418 }, 419 { 420 .matches = { 421 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 422 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"), 423 }, 424 }, 425 { 426 .matches = { 427 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 428 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"), 429 }, 430 }, 431 { 432 .matches = { 433 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 434 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"), 435 }, 436 }, 437 { } 438 }; 439 440 static int btbcm_read_info(struct hci_dev *hdev) 441 { 442 struct sk_buff *skb; 443 444 /* Read Verbose Config Version Info */ 445 skb = btbcm_read_verbose_config(hdev); 446 if (IS_ERR(skb)) 447 return PTR_ERR(skb); 448 449 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]); 450 kfree_skb(skb); 451 452 return 0; 453 } 454 455 static int btbcm_print_controller_features(struct hci_dev *hdev) 456 { 457 struct sk_buff *skb; 458 459 /* Read Controller Features */ 460 skb = btbcm_read_controller_features(hdev); 461 if (IS_ERR(skb)) 462 return PTR_ERR(skb); 463 464 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 465 kfree_skb(skb); 466 467 /* Read DMI and disable broken Read LE Min/Max Tx Power */ 468 if (dmi_first_match(disable_broken_read_transmit_power)) 469 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks); 470 471 return 0; 472 } 473 474 static int btbcm_print_local_name(struct hci_dev *hdev) 475 { 476 struct sk_buff *skb; 477 478 /* Read Local Name */ 479 skb = btbcm_read_local_name(hdev); 480 if (IS_ERR(skb)) 481 return PTR_ERR(skb); 482 483 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 484 kfree_skb(skb); 485 486 return 0; 487 } 488 489 struct bcm_subver_table { 490 u16 subver; 491 const char *name; 492 }; 493 494 static const struct bcm_subver_table bcm_uart_subver_table[] = { 495 { 0x1111, "BCM4362A2" }, /* 000.017.017 */ 496 { 0x4103, "BCM4330B1" }, /* 002.001.003 */ 497 { 0x410d, "BCM4334B0" }, /* 002.001.013 */ 498 { 0x410e, "BCM43341B0" }, /* 002.001.014 */ 499 { 0x4204, "BCM2076B1" }, /* 002.002.004 */ 500 { 0x4406, "BCM4324B3" }, /* 002.004.006 */ 501 { 0x4606, "BCM4324B5" }, /* 002.006.006 */ 502 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 503 { 0x610c, "BCM4354" }, /* 003.001.012 */ 504 { 0x2122, "BCM4343A0" }, /* 001.001.034 */ 505 { 0x2209, "BCM43430A1" }, /* 001.002.009 */ 506 { 0x6119, "BCM4345C0" }, /* 003.001.025 */ 507 { 0x6606, "BCM4345C5" }, /* 003.006.006 */ 508 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 509 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 510 { 0x420d, "BCM4349B1" }, /* 002.002.013 */ 511 { 0x420e, "BCM4349B1" }, /* 002.002.014 */ 512 { 0x4217, "BCM4329B1" }, /* 002.002.023 */ 513 { 0x6106, "BCM4359C0" }, /* 003.001.006 */ 514 { 0x4106, "BCM4335A0" }, /* 002.001.006 */ 515 { 0x410c, "BCM43430B0" }, /* 002.001.012 */ 516 { 0x2119, "BCM4373A0" }, /* 001.001.025 */ 517 { } 518 }; 519 520 static const struct bcm_subver_table bcm_usb_subver_table[] = { 521 { 0x2105, "BCM20703A1" }, /* 001.001.005 */ 522 { 0x210b, "BCM43142A0" }, /* 001.001.011 */ 523 { 0x2112, "BCM4314A0" }, /* 001.001.018 */ 524 { 0x2118, "BCM20702A0" }, /* 001.001.024 */ 525 { 0x2126, "BCM4335A0" }, /* 001.001.038 */ 526 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 527 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 528 { 0x4106, "BCM4335B0" }, /* 002.001.006 */ 529 { 0x410e, "BCM20702B0" }, /* 002.001.014 */ 530 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 531 { 0x610c, "BCM4354" }, /* 003.001.012 */ 532 { 0x6607, "BCM4350C5" }, /* 003.006.007 */ 533 { } 534 }; 535 536 /* 537 * This currently only looks up the device tree board appendix, 538 * but can be expanded to other mechanisms. 539 */ 540 static const char *btbcm_get_board_name(struct device *dev) 541 { 542 #ifdef CONFIG_OF 543 struct device_node *root; 544 char *board_type; 545 const char *tmp; 546 int len; 547 int i; 548 549 root = of_find_node_by_path("/"); 550 if (!root) 551 return NULL; 552 553 if (of_property_read_string_index(root, "compatible", 0, &tmp)) 554 return NULL; 555 556 /* get rid of any '/' in the compatible string */ 557 len = strlen(tmp) + 1; 558 board_type = devm_kzalloc(dev, len, GFP_KERNEL); 559 strscpy(board_type, tmp, len); 560 for (i = 0; i < len; i++) { 561 if (board_type[i] == '/') 562 board_type[i] = '-'; 563 } 564 of_node_put(root); 565 566 return board_type; 567 #else 568 return NULL; 569 #endif 570 } 571 572 int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 573 { 574 u16 subver, rev, pid, vid; 575 struct sk_buff *skb; 576 struct hci_rp_read_local_version *ver; 577 const struct bcm_subver_table *bcm_subver_table; 578 const char *hw_name = NULL; 579 const char *board_name; 580 char postfix[16] = ""; 581 int fw_name_count = 0; 582 bcm_fw_name *fw_name; 583 const struct firmware *fw; 584 int i, err; 585 586 board_name = btbcm_get_board_name(&hdev->dev); 587 588 /* Reset */ 589 err = btbcm_reset(hdev); 590 if (err) 591 return err; 592 593 /* Read Local Version Info */ 594 skb = btbcm_read_local_version(hdev); 595 if (IS_ERR(skb)) 596 return PTR_ERR(skb); 597 598 ver = (struct hci_rp_read_local_version *)skb->data; 599 rev = le16_to_cpu(ver->hci_rev); 600 subver = le16_to_cpu(ver->lmp_subver); 601 kfree_skb(skb); 602 603 /* Read controller information */ 604 if (!(*fw_load_done)) { 605 err = btbcm_read_info(hdev); 606 if (err) 607 return err; 608 } 609 610 if (!use_autobaud_mode) { 611 err = btbcm_print_controller_features(hdev); 612 if (err) 613 return err; 614 615 err = btbcm_print_local_name(hdev); 616 if (err) 617 return err; 618 } 619 620 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table : 621 bcm_uart_subver_table; 622 623 for (i = 0; bcm_subver_table[i].name; i++) { 624 if (subver == bcm_subver_table[i].subver) { 625 hw_name = bcm_subver_table[i].name; 626 break; 627 } 628 } 629 630 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u", 631 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13, 632 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff); 633 634 if (*fw_load_done) 635 return 0; 636 637 if (hdev->bus == HCI_USB) { 638 /* Read USB Product Info */ 639 skb = btbcm_read_usb_product(hdev); 640 if (IS_ERR(skb)) 641 return PTR_ERR(skb); 642 643 vid = get_unaligned_le16(skb->data + 1); 644 pid = get_unaligned_le16(skb->data + 3); 645 kfree_skb(skb); 646 647 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid); 648 } 649 650 fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL); 651 if (!fw_name) 652 return -ENOMEM; 653 654 if (hw_name) { 655 if (board_name) { 656 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 657 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name); 658 fw_name_count++; 659 } 660 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 661 "brcm/%s%s.hcd", hw_name, postfix); 662 fw_name_count++; 663 } 664 665 if (board_name) { 666 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 667 "brcm/BCM%s.%s.hcd", postfix, board_name); 668 fw_name_count++; 669 } 670 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 671 "brcm/BCM%s.hcd", postfix); 672 fw_name_count++; 673 674 for (i = 0; i < fw_name_count; i++) { 675 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev); 676 if (err == 0) { 677 bt_dev_info(hdev, "%s '%s' Patch", 678 hw_name ? hw_name : "BCM", fw_name[i]); 679 *fw_load_done = true; 680 break; 681 } 682 } 683 684 if (*fw_load_done) { 685 err = btbcm_patchram(hdev, fw); 686 if (err) 687 bt_dev_info(hdev, "BCM: Patch failed (%d)", err); 688 689 release_firmware(fw); 690 } else { 691 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:"); 692 for (i = 0; i < fw_name_count; i++) 693 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]); 694 } 695 696 kfree(fw_name); 697 return 0; 698 } 699 EXPORT_SYMBOL_GPL(btbcm_initialize); 700 701 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 702 { 703 int err; 704 705 /* Re-initialize if necessary */ 706 if (*fw_load_done) { 707 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode); 708 if (err) 709 return err; 710 } 711 712 btbcm_check_bdaddr(hdev); 713 714 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 715 716 return 0; 717 } 718 EXPORT_SYMBOL_GPL(btbcm_finalize); 719 720 int btbcm_setup_patchram(struct hci_dev *hdev) 721 { 722 bool fw_load_done = false; 723 bool use_autobaud_mode = false; 724 int err; 725 726 /* Initialize */ 727 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode); 728 if (err) 729 return err; 730 731 /* Re-initialize after loading Patch */ 732 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode); 733 } 734 EXPORT_SYMBOL_GPL(btbcm_setup_patchram); 735 736 int btbcm_setup_apple(struct hci_dev *hdev) 737 { 738 struct sk_buff *skb; 739 int err; 740 741 /* Reset */ 742 err = btbcm_reset(hdev); 743 if (err) 744 return err; 745 746 /* Read Verbose Config Version Info */ 747 skb = btbcm_read_verbose_config(hdev); 748 if (!IS_ERR(skb)) { 749 bt_dev_info(hdev, "BCM: chip id %u build %4.4u", 750 skb->data[1], get_unaligned_le16(skb->data + 5)); 751 kfree_skb(skb); 752 } 753 754 /* Read USB Product Info */ 755 skb = btbcm_read_usb_product(hdev); 756 if (!IS_ERR(skb)) { 757 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x", 758 get_unaligned_le16(skb->data + 1), 759 get_unaligned_le16(skb->data + 3)); 760 kfree_skb(skb); 761 } 762 763 /* Read Controller Features */ 764 skb = btbcm_read_controller_features(hdev); 765 if (!IS_ERR(skb)) { 766 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 767 kfree_skb(skb); 768 } 769 770 /* Read Local Name */ 771 skb = btbcm_read_local_name(hdev); 772 if (!IS_ERR(skb)) { 773 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 774 kfree_skb(skb); 775 } 776 777 set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks); 778 779 return 0; 780 } 781 EXPORT_SYMBOL_GPL(btbcm_setup_apple); 782 783 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 784 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); 785 MODULE_VERSION(VERSION); 786 MODULE_LICENSE("GPL"); 787