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 <linux/string.h> 15 #include <linux/unaligned.h> 16 17 #include <net/bluetooth/bluetooth.h> 18 #include <net/bluetooth/hci_core.h> 19 20 #include "btbcm.h" 21 22 #define VERSION "0.1" 23 24 #define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}}) 25 #define BDADDR_BCM20702A1 (&(bdaddr_t) {{0x00, 0x00, 0xa0, 0x02, 0x70, 0x20}}) 26 #define BDADDR_BCM2076B1 (&(bdaddr_t) {{0x79, 0x56, 0x00, 0xa0, 0x76, 0x20}}) 27 #define BDADDR_BCM43430A0 (&(bdaddr_t) {{0xac, 0x1f, 0x12, 0xa0, 0x43, 0x43}}) 28 #define BDADDR_BCM43430A1 (&(bdaddr_t) {{0xaa, 0xaa, 0xaa, 0xaa, 0xaa, 0xaa}}) 29 #define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}}) 30 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}}) 31 #define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}}) 32 #define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}}) 33 #define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}}) 34 35 #define BCM_FW_NAME_LEN 64 36 #define BCM_FW_NAME_COUNT_MAX 4 37 /* For kmalloc-ing the fw-name array instead of putting it on the stack */ 38 typedef char bcm_fw_name[BCM_FW_NAME_LEN]; 39 40 #ifdef CONFIG_EFI 41 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 42 { 43 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f, 44 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13); 45 bdaddr_t efi_bdaddr, bdaddr; 46 efi_status_t status; 47 unsigned long len; 48 int ret; 49 50 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 51 return -EOPNOTSUPP; 52 53 len = sizeof(efi_bdaddr); 54 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr); 55 if (status != EFI_SUCCESS) 56 return -ENXIO; 57 58 if (len != sizeof(efi_bdaddr)) 59 return -EIO; 60 61 baswap(&bdaddr, &efi_bdaddr); 62 63 ret = btbcm_set_bdaddr(hdev, &bdaddr); 64 if (ret) 65 return ret; 66 67 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr); 68 return 0; 69 } 70 #else 71 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 72 { 73 return -EOPNOTSUPP; 74 } 75 #endif 76 77 int btbcm_check_bdaddr(struct hci_dev *hdev) 78 { 79 struct hci_rp_read_bd_addr *bda; 80 struct sk_buff *skb; 81 82 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, 83 HCI_INIT_TIMEOUT); 84 if (IS_ERR(skb)) { 85 int err = PTR_ERR(skb); 86 87 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err); 88 return err; 89 } 90 91 if (skb->len != sizeof(*bda)) { 92 bt_dev_err(hdev, "BCM: Device address length mismatch"); 93 kfree_skb(skb); 94 return -EIO; 95 } 96 97 bda = (struct hci_rp_read_bd_addr *)skb->data; 98 99 /* Check if the address indicates a controller with either an 100 * invalid or default address. In both cases the device needs 101 * to be marked as not having a valid address. 102 * 103 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller 104 * with no configured address. 105 * 106 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller 107 * with no configured address. 108 * 109 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller 110 * with no configured address. 111 * 112 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller 113 * with waiting for configuration state. 114 * 115 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller 116 * with waiting for configuration state. 117 * 118 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller 119 * with no configured address. 120 * 121 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller 122 * with no configured address. 123 */ 124 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) || 125 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || 126 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) || 127 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || 128 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || 129 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) || 130 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) || 131 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || 132 !bacmp(&bda->bdaddr, BDADDR_BCM43430A1) || 133 !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) { 134 /* Try falling back to BDADDR EFI variable */ 135 if (btbcm_set_bdaddr_from_efi(hdev) != 0) { 136 bt_dev_info(hdev, "BCM: Using default device address (%pMR)", 137 &bda->bdaddr); 138 hci_set_quirk(hdev, HCI_QUIRK_INVALID_BDADDR); 139 } 140 } 141 142 kfree_skb(skb); 143 144 return 0; 145 } 146 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); 147 148 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 149 { 150 struct sk_buff *skb; 151 int err; 152 153 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); 154 if (IS_ERR(skb)) { 155 err = PTR_ERR(skb); 156 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err); 157 return err; 158 } 159 kfree_skb(skb); 160 161 return 0; 162 } 163 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); 164 165 int btbcm_read_pcm_int_params(struct hci_dev *hdev, 166 struct bcm_set_pcm_int_params *params) 167 { 168 struct sk_buff *skb; 169 int err = 0; 170 171 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); 172 if (IS_ERR(skb)) { 173 err = PTR_ERR(skb); 174 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); 175 return err; 176 } 177 178 if (skb->len != 6 || skb->data[0]) { 179 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); 180 kfree_skb(skb); 181 return -EIO; 182 } 183 184 if (params) 185 memcpy(params, skb->data + 1, 5); 186 187 kfree_skb(skb); 188 189 return 0; 190 } 191 EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); 192 193 int btbcm_write_pcm_int_params(struct hci_dev *hdev, 194 const struct bcm_set_pcm_int_params *params) 195 { 196 struct sk_buff *skb; 197 int err; 198 199 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); 200 if (IS_ERR(skb)) { 201 err = PTR_ERR(skb); 202 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); 203 return err; 204 } 205 kfree_skb(skb); 206 207 return 0; 208 } 209 EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); 210 211 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) 212 { 213 const struct hci_command_hdr *cmd; 214 const u8 *fw_ptr; 215 size_t fw_size; 216 struct sk_buff *skb; 217 u16 opcode; 218 int err = 0; 219 220 /* Start Download */ 221 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); 222 if (IS_ERR(skb)) { 223 err = PTR_ERR(skb); 224 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)", 225 err); 226 return err; 227 } 228 kfree_skb(skb); 229 230 /* 50 msec delay after Download Minidrv completes */ 231 msleep(50); 232 233 fw_ptr = fw->data; 234 fw_size = fw->size; 235 236 while (fw_size >= sizeof(*cmd)) { 237 const u8 *cmd_param; 238 239 cmd = (struct hci_command_hdr *)fw_ptr; 240 fw_ptr += sizeof(*cmd); 241 fw_size -= sizeof(*cmd); 242 243 if (fw_size < cmd->plen) { 244 bt_dev_err(hdev, "BCM: Patch is corrupted"); 245 return -EINVAL; 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 return err; 261 } 262 kfree_skb(skb); 263 } 264 265 /* 250 msec delay after Launch Ram completes */ 266 msleep(250); 267 268 return 0; 269 } 270 EXPORT_SYMBOL(btbcm_patchram); 271 272 static int btbcm_reset(struct hci_dev *hdev) 273 { 274 struct sk_buff *skb; 275 276 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 277 if (IS_ERR(skb)) { 278 int err = PTR_ERR(skb); 279 280 bt_dev_err(hdev, "BCM: Reset failed (%d)", err); 281 return err; 282 } 283 kfree_skb(skb); 284 285 /* 100 msec delay for module to complete reset process */ 286 msleep(100); 287 288 return 0; 289 } 290 291 static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev) 292 { 293 struct sk_buff *skb; 294 295 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL, 296 HCI_INIT_TIMEOUT); 297 if (IS_ERR(skb)) { 298 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)", 299 PTR_ERR(skb)); 300 return skb; 301 } 302 303 if (skb->len != sizeof(struct hci_rp_read_local_name)) { 304 bt_dev_err(hdev, "BCM: Local name length mismatch"); 305 kfree_skb(skb); 306 return ERR_PTR(-EIO); 307 } 308 309 return skb; 310 } 311 312 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev) 313 { 314 struct sk_buff *skb; 315 316 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 317 HCI_INIT_TIMEOUT); 318 if (IS_ERR(skb)) { 319 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)", 320 PTR_ERR(skb)); 321 return skb; 322 } 323 324 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 325 bt_dev_err(hdev, "BCM: Local version length mismatch"); 326 kfree_skb(skb); 327 return ERR_PTR(-EIO); 328 } 329 330 return skb; 331 } 332 333 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev) 334 { 335 struct sk_buff *skb; 336 337 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT); 338 if (IS_ERR(skb)) { 339 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)", 340 PTR_ERR(skb)); 341 return skb; 342 } 343 344 if (skb->len != 7) { 345 bt_dev_err(hdev, "BCM: Verbose config length mismatch"); 346 kfree_skb(skb); 347 return ERR_PTR(-EIO); 348 } 349 350 return skb; 351 } 352 353 static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev) 354 { 355 struct sk_buff *skb; 356 357 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT); 358 if (IS_ERR(skb)) { 359 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)", 360 PTR_ERR(skb)); 361 return skb; 362 } 363 364 if (skb->len != 9) { 365 bt_dev_err(hdev, "BCM: Controller features length mismatch"); 366 kfree_skb(skb); 367 return ERR_PTR(-EIO); 368 } 369 370 return skb; 371 } 372 373 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev) 374 { 375 struct sk_buff *skb; 376 377 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT); 378 if (IS_ERR(skb)) { 379 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)", 380 PTR_ERR(skb)); 381 return skb; 382 } 383 384 if (skb->len != 5) { 385 bt_dev_err(hdev, "BCM: USB product length mismatch"); 386 kfree_skb(skb); 387 return ERR_PTR(-EIO); 388 } 389 390 return skb; 391 } 392 393 static const struct dmi_system_id disable_broken_read_transmit_power[] = { 394 { 395 .matches = { 396 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 397 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"), 398 }, 399 }, 400 { 401 .matches = { 402 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 403 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"), 404 }, 405 }, 406 { 407 .matches = { 408 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 409 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"), 410 }, 411 }, 412 { 413 .matches = { 414 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 415 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"), 416 }, 417 }, 418 { 419 .matches = { 420 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 421 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"), 422 }, 423 }, 424 { 425 .matches = { 426 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 427 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"), 428 }, 429 }, 430 { 431 .matches = { 432 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 433 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"), 434 }, 435 }, 436 { } 437 }; 438 439 static int btbcm_read_info(struct hci_dev *hdev) 440 { 441 struct sk_buff *skb; 442 443 /* Read Verbose Config Version Info */ 444 skb = btbcm_read_verbose_config(hdev); 445 if (IS_ERR(skb)) 446 return PTR_ERR(skb); 447 448 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]); 449 kfree_skb(skb); 450 451 return 0; 452 } 453 454 static int btbcm_print_controller_features(struct hci_dev *hdev) 455 { 456 struct sk_buff *skb; 457 458 /* Read Controller Features */ 459 skb = btbcm_read_controller_features(hdev); 460 if (IS_ERR(skb)) 461 return PTR_ERR(skb); 462 463 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 464 kfree_skb(skb); 465 466 /* Read DMI and disable broken Read LE Min/Max Tx Power */ 467 if (dmi_first_match(disable_broken_read_transmit_power)) 468 hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER); 469 470 return 0; 471 } 472 473 static int btbcm_print_local_name(struct hci_dev *hdev) 474 { 475 struct sk_buff *skb; 476 477 /* Read Local Name */ 478 skb = btbcm_read_local_name(hdev); 479 if (IS_ERR(skb)) 480 return PTR_ERR(skb); 481 482 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 483 kfree_skb(skb); 484 485 return 0; 486 } 487 488 struct bcm_subver_table { 489 u16 subver; 490 const char *name; 491 }; 492 493 static const struct bcm_subver_table bcm_uart_subver_table[] = { 494 { 0x1111, "BCM4362A2" }, /* 000.017.017 */ 495 { 0x4103, "BCM4330B1" }, /* 002.001.003 */ 496 { 0x410d, "BCM4334B0" }, /* 002.001.013 */ 497 { 0x410e, "BCM43341B0" }, /* 002.001.014 */ 498 { 0x4204, "BCM2076B1" }, /* 002.002.004 */ 499 { 0x4406, "BCM4324B3" }, /* 002.004.006 */ 500 { 0x4606, "BCM4324B5" }, /* 002.006.006 */ 501 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 502 { 0x610c, "BCM4354" }, /* 003.001.012 */ 503 { 0x2122, "BCM4343A0" }, /* 001.001.034 */ 504 { 0x2209, "BCM43430A1" }, /* 001.002.009 */ 505 { 0x6119, "BCM4345C0" }, /* 003.001.025 */ 506 { 0x6606, "BCM4345C5" }, /* 003.006.006 */ 507 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 508 { 0x2310, "BCM4343A2" }, /* 001.003.016 */ 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 __free(device_node) = of_find_node_by_path("/"); 544 char *board_type; 545 const char *tmp; 546 547 if (!root) 548 return NULL; 549 550 if (of_property_read_string_index(root, "compatible", 0, &tmp)) 551 return NULL; 552 553 /* get rid of any '/' in the compatible string */ 554 board_type = devm_kstrdup(dev, tmp, GFP_KERNEL); 555 if (!board_type) 556 return NULL; 557 558 strreplace(board_type, '/', '-'); 559 560 return board_type; 561 #else 562 return NULL; 563 #endif 564 } 565 566 int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 567 { 568 u16 subver, rev, pid, vid; 569 struct sk_buff *skb; 570 struct hci_rp_read_local_version *ver; 571 const struct bcm_subver_table *bcm_subver_table; 572 const char *hw_name = NULL; 573 const char *board_name; 574 char postfix[16] = ""; 575 int fw_name_count = 0; 576 bcm_fw_name *fw_name; 577 const struct firmware *fw; 578 int i, err; 579 580 board_name = btbcm_get_board_name(&hdev->dev); 581 582 /* Reset */ 583 err = btbcm_reset(hdev); 584 if (err) 585 return err; 586 587 /* Read Local Version Info */ 588 skb = btbcm_read_local_version(hdev); 589 if (IS_ERR(skb)) 590 return PTR_ERR(skb); 591 592 ver = (struct hci_rp_read_local_version *)skb->data; 593 rev = le16_to_cpu(ver->hci_rev); 594 subver = le16_to_cpu(ver->lmp_subver); 595 kfree_skb(skb); 596 597 /* Read controller information */ 598 if (!(*fw_load_done)) { 599 err = btbcm_read_info(hdev); 600 if (err) 601 return err; 602 } 603 604 if (!use_autobaud_mode) { 605 err = btbcm_print_controller_features(hdev); 606 if (err) 607 return err; 608 609 err = btbcm_print_local_name(hdev); 610 if (err) 611 return err; 612 } 613 614 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table : 615 bcm_uart_subver_table; 616 617 for (i = 0; bcm_subver_table[i].name; i++) { 618 if (subver == bcm_subver_table[i].subver) { 619 hw_name = bcm_subver_table[i].name; 620 break; 621 } 622 } 623 624 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u", 625 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13, 626 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff); 627 628 if (*fw_load_done) 629 return 0; 630 631 if (hdev->bus == HCI_USB) { 632 /* Read USB Product Info */ 633 skb = btbcm_read_usb_product(hdev); 634 if (IS_ERR(skb)) 635 return PTR_ERR(skb); 636 637 vid = get_unaligned_le16(skb->data + 1); 638 pid = get_unaligned_le16(skb->data + 3); 639 kfree_skb(skb); 640 641 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid); 642 } 643 644 fw_name = kmalloc_array(BCM_FW_NAME_COUNT_MAX, 645 sizeof(*fw_name), 646 GFP_KERNEL); 647 if (!fw_name) 648 return -ENOMEM; 649 650 if (hw_name) { 651 if (board_name) { 652 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 653 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name); 654 fw_name_count++; 655 } 656 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 657 "brcm/%s%s.hcd", hw_name, postfix); 658 fw_name_count++; 659 } 660 661 if (board_name) { 662 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 663 "brcm/BCM%s.%s.hcd", postfix, board_name); 664 fw_name_count++; 665 } 666 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 667 "brcm/BCM%s.hcd", postfix); 668 fw_name_count++; 669 670 for (i = 0; i < fw_name_count; i++) { 671 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev); 672 if (err == 0) { 673 bt_dev_info(hdev, "%s '%s' Patch", 674 hw_name ? hw_name : "BCM", fw_name[i]); 675 *fw_load_done = true; 676 break; 677 } 678 } 679 680 if (*fw_load_done) { 681 err = btbcm_patchram(hdev, fw); 682 if (err) 683 bt_dev_info(hdev, "BCM: Patch failed (%d)", err); 684 685 release_firmware(fw); 686 } else { 687 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:"); 688 for (i = 0; i < fw_name_count; i++) 689 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]); 690 } 691 692 kfree(fw_name); 693 return 0; 694 } 695 EXPORT_SYMBOL_GPL(btbcm_initialize); 696 697 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 698 { 699 int err; 700 701 /* Re-initialize if necessary */ 702 if (*fw_load_done) { 703 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode); 704 if (err) 705 return err; 706 } 707 708 btbcm_check_bdaddr(hdev); 709 710 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER); 711 712 return 0; 713 } 714 EXPORT_SYMBOL_GPL(btbcm_finalize); 715 716 int btbcm_setup_patchram(struct hci_dev *hdev) 717 { 718 bool fw_load_done = false; 719 bool use_autobaud_mode = false; 720 int err; 721 722 /* Initialize */ 723 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode); 724 if (err) 725 return err; 726 727 /* Re-initialize after loading Patch */ 728 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode); 729 } 730 EXPORT_SYMBOL_GPL(btbcm_setup_patchram); 731 732 int btbcm_setup_apple(struct hci_dev *hdev) 733 { 734 struct sk_buff *skb; 735 int err; 736 737 /* Reset */ 738 err = btbcm_reset(hdev); 739 if (err) 740 return err; 741 742 /* Read Verbose Config Version Info */ 743 skb = btbcm_read_verbose_config(hdev); 744 if (!IS_ERR(skb)) { 745 bt_dev_info(hdev, "BCM: chip id %u build %4.4u", 746 skb->data[1], get_unaligned_le16(skb->data + 5)); 747 kfree_skb(skb); 748 } 749 750 /* Read USB Product Info */ 751 skb = btbcm_read_usb_product(hdev); 752 if (!IS_ERR(skb)) { 753 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x", 754 get_unaligned_le16(skb->data + 1), 755 get_unaligned_le16(skb->data + 3)); 756 kfree_skb(skb); 757 } 758 759 /* Read Controller Features */ 760 skb = btbcm_read_controller_features(hdev); 761 if (!IS_ERR(skb)) { 762 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 763 kfree_skb(skb); 764 } 765 766 /* Read Local Name */ 767 skb = btbcm_read_local_name(hdev); 768 if (!IS_ERR(skb)) { 769 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 770 kfree_skb(skb); 771 } 772 773 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER); 774 775 return 0; 776 } 777 EXPORT_SYMBOL_GPL(btbcm_setup_apple); 778 779 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 780 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); 781 MODULE_VERSION(VERSION); 782 MODULE_LICENSE("GPL"); 783