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 #define BDADDR_BCM4384B0 (&(bdaddr_t) {{0x93, 0x76, 0x00, 0xb0, 0x84, 0x43}}) 35 36 #define BCM_FW_NAME_LEN 64 37 #define BCM_FW_NAME_COUNT_MAX 4 38 /* For kmalloc-ing the fw-name array instead of putting it on the stack */ 39 typedef char bcm_fw_name[BCM_FW_NAME_LEN]; 40 41 #ifdef CONFIG_EFI 42 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 43 { 44 efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f, 45 0x43, 0x26, 0x81, 0x23, 0xd1, 0x13); 46 bdaddr_t efi_bdaddr, bdaddr; 47 efi_status_t status; 48 unsigned long len; 49 int ret; 50 51 if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE)) 52 return -EOPNOTSUPP; 53 54 len = sizeof(efi_bdaddr); 55 status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr); 56 if (status != EFI_SUCCESS) 57 return -ENXIO; 58 59 if (len != sizeof(efi_bdaddr)) 60 return -EIO; 61 62 baswap(&bdaddr, &efi_bdaddr); 63 64 ret = btbcm_set_bdaddr(hdev, &bdaddr); 65 if (ret) 66 return ret; 67 68 bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr); 69 return 0; 70 } 71 #else 72 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev) 73 { 74 return -EOPNOTSUPP; 75 } 76 #endif 77 78 int btbcm_check_bdaddr(struct hci_dev *hdev) 79 { 80 struct hci_rp_read_bd_addr *bda; 81 struct sk_buff *skb; 82 83 skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL, 84 HCI_INIT_TIMEOUT); 85 if (IS_ERR(skb)) { 86 int err = PTR_ERR(skb); 87 88 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err); 89 return err; 90 } 91 92 if (skb->len != sizeof(*bda)) { 93 bt_dev_err(hdev, "BCM: Device address length mismatch"); 94 kfree_skb(skb); 95 return -EIO; 96 } 97 98 bda = (struct hci_rp_read_bd_addr *)skb->data; 99 100 /* Check if the address indicates a controller with either an 101 * invalid or default address. In both cases the device needs 102 * to be marked as not having a valid address. 103 * 104 * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller 105 * with no configured address. 106 * 107 * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller 108 * with no configured address. 109 * 110 * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller 111 * with no configured address. 112 * 113 * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller 114 * with waiting for configuration state. 115 * 116 * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller 117 * with waiting for configuration state. 118 * 119 * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller 120 * with no configured address. 121 * 122 * The address AA:AA:AA:AA:AA:AA indicates a BCM43430A1 controller 123 * with no configured address. 124 */ 125 if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) || 126 !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) || 127 !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) || 128 !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) || 129 !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) || 130 !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) || 131 !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) || 132 !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) || 133 !bacmp(&bda->bdaddr, BDADDR_BCM43430A1) || 134 !bacmp(&bda->bdaddr, BDADDR_BCM43341B) || 135 !bacmp(&bda->bdaddr, BDADDR_BCM4384B0)) { 136 /* Try falling back to BDADDR EFI variable */ 137 if (btbcm_set_bdaddr_from_efi(hdev) != 0) { 138 bt_dev_info(hdev, "BCM: Using default device address (%pMR)", 139 &bda->bdaddr); 140 hci_set_quirk(hdev, HCI_QUIRK_INVALID_BDADDR); 141 } 142 } 143 144 kfree_skb(skb); 145 146 return 0; 147 } 148 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr); 149 150 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr) 151 { 152 struct sk_buff *skb; 153 int err; 154 155 skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT); 156 if (IS_ERR(skb)) { 157 err = PTR_ERR(skb); 158 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err); 159 return err; 160 } 161 kfree_skb(skb); 162 163 return 0; 164 } 165 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr); 166 167 int btbcm_read_pcm_int_params(struct hci_dev *hdev, 168 struct bcm_set_pcm_int_params *params) 169 { 170 struct sk_buff *skb; 171 int err = 0; 172 173 skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT); 174 if (IS_ERR(skb)) { 175 err = PTR_ERR(skb); 176 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err); 177 return err; 178 } 179 180 if (skb->len != 6 || skb->data[0]) { 181 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch"); 182 kfree_skb(skb); 183 return -EIO; 184 } 185 186 if (params) 187 memcpy(params, skb->data + 1, 5); 188 189 kfree_skb(skb); 190 191 return 0; 192 } 193 EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params); 194 195 int btbcm_write_pcm_int_params(struct hci_dev *hdev, 196 const struct bcm_set_pcm_int_params *params) 197 { 198 struct sk_buff *skb; 199 int err; 200 201 skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT); 202 if (IS_ERR(skb)) { 203 err = PTR_ERR(skb); 204 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err); 205 return err; 206 } 207 kfree_skb(skb); 208 209 return 0; 210 } 211 EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params); 212 213 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw) 214 { 215 const struct hci_command_hdr *cmd; 216 const u8 *fw_ptr; 217 size_t fw_size; 218 struct sk_buff *skb; 219 u16 opcode; 220 int err = 0; 221 222 /* Start Download */ 223 skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT); 224 if (IS_ERR(skb)) { 225 err = PTR_ERR(skb); 226 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)", 227 err); 228 return err; 229 } 230 kfree_skb(skb); 231 232 /* 50 msec delay after Download Minidrv completes */ 233 msleep(50); 234 235 fw_ptr = fw->data; 236 fw_size = fw->size; 237 238 while (fw_size >= sizeof(*cmd)) { 239 const u8 *cmd_param; 240 241 cmd = (struct hci_command_hdr *)fw_ptr; 242 fw_ptr += sizeof(*cmd); 243 fw_size -= sizeof(*cmd); 244 245 if (fw_size < cmd->plen) { 246 bt_dev_err(hdev, "BCM: Patch is corrupted"); 247 return -EINVAL; 248 } 249 250 cmd_param = fw_ptr; 251 fw_ptr += cmd->plen; 252 fw_size -= cmd->plen; 253 254 opcode = le16_to_cpu(cmd->opcode); 255 256 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param, 257 HCI_INIT_TIMEOUT); 258 if (IS_ERR(skb)) { 259 err = PTR_ERR(skb); 260 bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)", 261 opcode, err); 262 return err; 263 } 264 kfree_skb(skb); 265 } 266 267 /* 250 msec delay after Launch Ram completes */ 268 msleep(250); 269 270 return 0; 271 } 272 EXPORT_SYMBOL(btbcm_patchram); 273 274 static int btbcm_reset(struct hci_dev *hdev) 275 { 276 struct sk_buff *skb; 277 278 skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT); 279 if (IS_ERR(skb)) { 280 int err = PTR_ERR(skb); 281 282 bt_dev_err(hdev, "BCM: Reset failed (%d)", err); 283 return err; 284 } 285 kfree_skb(skb); 286 287 /* 100 msec delay for module to complete reset process */ 288 msleep(100); 289 290 return 0; 291 } 292 293 static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev) 294 { 295 struct sk_buff *skb; 296 297 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL, 298 HCI_INIT_TIMEOUT); 299 if (IS_ERR(skb)) { 300 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)", 301 PTR_ERR(skb)); 302 return skb; 303 } 304 305 if (skb->len != sizeof(struct hci_rp_read_local_name)) { 306 bt_dev_err(hdev, "BCM: Local name length mismatch"); 307 kfree_skb(skb); 308 return ERR_PTR(-EIO); 309 } 310 311 return skb; 312 } 313 314 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev) 315 { 316 struct sk_buff *skb; 317 318 skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL, 319 HCI_INIT_TIMEOUT); 320 if (IS_ERR(skb)) { 321 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)", 322 PTR_ERR(skb)); 323 return skb; 324 } 325 326 if (skb->len != sizeof(struct hci_rp_read_local_version)) { 327 bt_dev_err(hdev, "BCM: Local version length mismatch"); 328 kfree_skb(skb); 329 return ERR_PTR(-EIO); 330 } 331 332 return skb; 333 } 334 335 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev) 336 { 337 struct sk_buff *skb; 338 339 skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT); 340 if (IS_ERR(skb)) { 341 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)", 342 PTR_ERR(skb)); 343 return skb; 344 } 345 346 if (skb->len != 7) { 347 bt_dev_err(hdev, "BCM: Verbose config length mismatch"); 348 kfree_skb(skb); 349 return ERR_PTR(-EIO); 350 } 351 352 return skb; 353 } 354 355 static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev) 356 { 357 struct sk_buff *skb; 358 359 skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT); 360 if (IS_ERR(skb)) { 361 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)", 362 PTR_ERR(skb)); 363 return skb; 364 } 365 366 if (skb->len != 9) { 367 bt_dev_err(hdev, "BCM: Controller features length mismatch"); 368 kfree_skb(skb); 369 return ERR_PTR(-EIO); 370 } 371 372 return skb; 373 } 374 375 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev) 376 { 377 struct sk_buff *skb; 378 379 skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT); 380 if (IS_ERR(skb)) { 381 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)", 382 PTR_ERR(skb)); 383 return skb; 384 } 385 386 if (skb->len != 5) { 387 bt_dev_err(hdev, "BCM: USB product length mismatch"); 388 kfree_skb(skb); 389 return ERR_PTR(-EIO); 390 } 391 392 return skb; 393 } 394 395 static const struct dmi_system_id disable_broken_read_transmit_power[] = { 396 { 397 .matches = { 398 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 399 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"), 400 }, 401 }, 402 { 403 .matches = { 404 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 405 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"), 406 }, 407 }, 408 { 409 .matches = { 410 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 411 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"), 412 }, 413 }, 414 { 415 .matches = { 416 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 417 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"), 418 }, 419 }, 420 { 421 .matches = { 422 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 423 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"), 424 }, 425 }, 426 { 427 .matches = { 428 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 429 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"), 430 }, 431 }, 432 { 433 .matches = { 434 DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."), 435 DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"), 436 }, 437 }, 438 { } 439 }; 440 441 static int btbcm_read_info(struct hci_dev *hdev) 442 { 443 struct sk_buff *skb; 444 445 /* Read Verbose Config Version Info */ 446 skb = btbcm_read_verbose_config(hdev); 447 if (IS_ERR(skb)) 448 return PTR_ERR(skb); 449 450 bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]); 451 kfree_skb(skb); 452 453 return 0; 454 } 455 456 static int btbcm_print_controller_features(struct hci_dev *hdev) 457 { 458 struct sk_buff *skb; 459 460 /* Read Controller Features */ 461 skb = btbcm_read_controller_features(hdev); 462 if (IS_ERR(skb)) 463 return PTR_ERR(skb); 464 465 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 466 kfree_skb(skb); 467 468 /* Read DMI and disable broken Read LE Min/Max Tx Power */ 469 if (dmi_first_match(disable_broken_read_transmit_power)) 470 hci_set_quirk(hdev, HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER); 471 472 return 0; 473 } 474 475 static int btbcm_print_local_name(struct hci_dev *hdev) 476 { 477 struct sk_buff *skb; 478 479 /* Read Local Name */ 480 skb = btbcm_read_local_name(hdev); 481 if (IS_ERR(skb)) 482 return PTR_ERR(skb); 483 484 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 485 kfree_skb(skb); 486 487 return 0; 488 } 489 490 struct bcm_subver_table { 491 u16 subver; 492 const char *name; 493 }; 494 495 static const struct bcm_subver_table bcm_uart_subver_table[] = { 496 { 0x1111, "BCM4362A2" }, /* 000.017.017 */ 497 { 0x4103, "BCM4330B1" }, /* 002.001.003 */ 498 { 0x410d, "BCM4334B0" }, /* 002.001.013 */ 499 { 0x410e, "BCM43341B0" }, /* 002.001.014 */ 500 { 0x4204, "BCM2076B1" }, /* 002.002.004 */ 501 { 0x4406, "BCM4324B3" }, /* 002.004.006 */ 502 { 0x4606, "BCM4324B5" }, /* 002.006.006 */ 503 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 504 { 0x610c, "BCM4354" }, /* 003.001.012 */ 505 { 0x2122, "BCM4343A0" }, /* 001.001.034 */ 506 { 0x2209, "BCM43430A1" }, /* 001.002.009 */ 507 { 0x6119, "BCM4345C0" }, /* 003.001.025 */ 508 { 0x6606, "BCM4345C5" }, /* 003.006.006 */ 509 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 510 { 0x2310, "BCM4343A2" }, /* 001.003.016 */ 511 { 0x2409, "BCM4356A3" }, /* 001.004.009 */ 512 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 513 { 0x420d, "BCM4349B1" }, /* 002.002.013 */ 514 { 0x420e, "BCM4349B1" }, /* 002.002.014 */ 515 { 0x4217, "BCM4329B1" }, /* 002.002.023 */ 516 { 0x6106, "BCM4359C0" }, /* 003.001.006 */ 517 { 0x4106, "BCM4335A0" }, /* 002.001.006 */ 518 { 0x410c, "BCM43430B0" }, /* 002.001.012 */ 519 { 0x2119, "BCM4373A0" }, /* 001.001.025 */ 520 { 0x2128, "BCM4384A0" }, /* 001.001.040 */ 521 { 0x4119, "BCM4384B0" }, /* 002.001.025 */ 522 { } 523 }; 524 525 static const struct bcm_subver_table bcm_usb_subver_table[] = { 526 { 0x2105, "BCM20703A1" }, /* 001.001.005 */ 527 { 0x210b, "BCM43142A0" }, /* 001.001.011 */ 528 { 0x2112, "BCM4314A0" }, /* 001.001.018 */ 529 { 0x2118, "BCM20702A0" }, /* 001.001.024 */ 530 { 0x2126, "BCM4335A0" }, /* 001.001.038 */ 531 { 0x220e, "BCM20702A1" }, /* 001.002.014 */ 532 { 0x230f, "BCM4356A2" }, /* 001.003.015 */ 533 { 0x4106, "BCM4335B0" }, /* 002.001.006 */ 534 { 0x410e, "BCM20702B0" }, /* 002.001.014 */ 535 { 0x6109, "BCM4335C0" }, /* 003.001.009 */ 536 { 0x610c, "BCM4354" }, /* 003.001.012 */ 537 { 0x6607, "BCM4350C5" }, /* 003.006.007 */ 538 { } 539 }; 540 541 /* 542 * This currently only looks up the device tree board appendix, 543 * but can be expanded to other mechanisms. 544 */ 545 static const char *btbcm_get_board_name(struct device *dev) 546 { 547 #ifdef CONFIG_OF 548 struct device_node *root __free(device_node) = of_find_node_by_path("/"); 549 char *board_type; 550 const char *tmp; 551 552 if (!root) 553 return NULL; 554 555 if (of_property_read_string_index(root, "compatible", 0, &tmp)) 556 return NULL; 557 558 /* get rid of any '/' in the compatible string */ 559 board_type = devm_kstrdup(dev, tmp, GFP_KERNEL); 560 if (!board_type) 561 return NULL; 562 563 strreplace(board_type, '/', '-'); 564 565 return board_type; 566 #else 567 return NULL; 568 #endif 569 } 570 571 int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 572 { 573 u16 subver, rev, pid, vid; 574 struct sk_buff *skb; 575 struct hci_rp_read_local_version *ver; 576 const struct bcm_subver_table *bcm_subver_table; 577 const char *hw_name = NULL; 578 const char *board_name; 579 char postfix[16] = ""; 580 int fw_name_count = 0; 581 bcm_fw_name *fw_name; 582 const struct firmware *fw; 583 int i, err; 584 585 board_name = btbcm_get_board_name(&hdev->dev); 586 587 /* Reset */ 588 err = btbcm_reset(hdev); 589 if (err) 590 return err; 591 592 /* Read Local Version Info */ 593 skb = btbcm_read_local_version(hdev); 594 if (IS_ERR(skb)) 595 return PTR_ERR(skb); 596 597 ver = (struct hci_rp_read_local_version *)skb->data; 598 rev = le16_to_cpu(ver->hci_rev); 599 subver = le16_to_cpu(ver->lmp_subver); 600 kfree_skb(skb); 601 602 /* Read controller information */ 603 if (!(*fw_load_done)) { 604 err = btbcm_read_info(hdev); 605 if (err) 606 return err; 607 } 608 609 if (!use_autobaud_mode) { 610 err = btbcm_print_controller_features(hdev); 611 if (err) 612 return err; 613 614 err = btbcm_print_local_name(hdev); 615 if (err) 616 return err; 617 } 618 619 bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table : 620 bcm_uart_subver_table; 621 622 for (i = 0; bcm_subver_table[i].name; i++) { 623 if (subver == bcm_subver_table[i].subver) { 624 hw_name = bcm_subver_table[i].name; 625 break; 626 } 627 } 628 629 bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u", 630 hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13, 631 (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff); 632 633 if (*fw_load_done) 634 return 0; 635 636 if (hdev->bus == HCI_USB) { 637 /* Read USB Product Info */ 638 skb = btbcm_read_usb_product(hdev); 639 if (IS_ERR(skb)) 640 return PTR_ERR(skb); 641 642 vid = get_unaligned_le16(skb->data + 1); 643 pid = get_unaligned_le16(skb->data + 3); 644 kfree_skb(skb); 645 646 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid); 647 } 648 649 fw_name = kmalloc_array(BCM_FW_NAME_COUNT_MAX, 650 sizeof(*fw_name), 651 GFP_KERNEL); 652 if (!fw_name) 653 return -ENOMEM; 654 655 if (hw_name) { 656 if (board_name) { 657 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 658 "brcm/%s%s.%s.hcd", hw_name, postfix, board_name); 659 fw_name_count++; 660 } 661 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 662 "brcm/%s%s.hcd", hw_name, postfix); 663 fw_name_count++; 664 } 665 666 if (board_name) { 667 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 668 "brcm/BCM%s.%s.hcd", postfix, board_name); 669 fw_name_count++; 670 } 671 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN, 672 "brcm/BCM%s.hcd", postfix); 673 fw_name_count++; 674 675 for (i = 0; i < fw_name_count; i++) { 676 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev); 677 if (err == 0) { 678 bt_dev_info(hdev, "%s '%s' Patch", 679 hw_name ? hw_name : "BCM", fw_name[i]); 680 *fw_load_done = true; 681 break; 682 } 683 } 684 685 if (*fw_load_done) { 686 err = btbcm_patchram(hdev, fw); 687 if (err) 688 bt_dev_info(hdev, "BCM: Patch failed (%d)", err); 689 690 release_firmware(fw); 691 } else { 692 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:"); 693 for (i = 0; i < fw_name_count; i++) 694 bt_dev_err(hdev, "BCM: '%s'", fw_name[i]); 695 } 696 697 kfree(fw_name); 698 return 0; 699 } 700 EXPORT_SYMBOL_GPL(btbcm_initialize); 701 702 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode) 703 { 704 int err; 705 706 /* Re-initialize if necessary */ 707 if (*fw_load_done) { 708 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode); 709 if (err) 710 return err; 711 } 712 713 btbcm_check_bdaddr(hdev); 714 715 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER); 716 717 return 0; 718 } 719 EXPORT_SYMBOL_GPL(btbcm_finalize); 720 721 int btbcm_setup_patchram(struct hci_dev *hdev) 722 { 723 bool fw_load_done = false; 724 bool use_autobaud_mode = false; 725 int err; 726 727 /* Initialize */ 728 err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode); 729 if (err) 730 return err; 731 732 /* Re-initialize after loading Patch */ 733 return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode); 734 } 735 EXPORT_SYMBOL_GPL(btbcm_setup_patchram); 736 737 int btbcm_setup_apple(struct hci_dev *hdev) 738 { 739 struct sk_buff *skb; 740 int err; 741 742 /* Reset */ 743 err = btbcm_reset(hdev); 744 if (err) 745 return err; 746 747 /* Read Verbose Config Version Info */ 748 skb = btbcm_read_verbose_config(hdev); 749 if (!IS_ERR(skb)) { 750 bt_dev_info(hdev, "BCM: chip id %u build %4.4u", 751 skb->data[1], get_unaligned_le16(skb->data + 5)); 752 kfree_skb(skb); 753 } 754 755 /* Read USB Product Info */ 756 skb = btbcm_read_usb_product(hdev); 757 if (!IS_ERR(skb)) { 758 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x", 759 get_unaligned_le16(skb->data + 1), 760 get_unaligned_le16(skb->data + 3)); 761 kfree_skb(skb); 762 } 763 764 /* Read Controller Features */ 765 skb = btbcm_read_controller_features(hdev); 766 if (!IS_ERR(skb)) { 767 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]); 768 kfree_skb(skb); 769 } 770 771 /* Read Local Name */ 772 skb = btbcm_read_local_name(hdev); 773 if (!IS_ERR(skb)) { 774 bt_dev_info(hdev, "%s", (char *)(skb->data + 1)); 775 kfree_skb(skb); 776 } 777 778 hci_set_quirk(hdev, HCI_QUIRK_STRICT_DUPLICATE_FILTER); 779 780 return 0; 781 } 782 EXPORT_SYMBOL_GPL(btbcm_setup_apple); 783 784 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); 785 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION); 786 MODULE_VERSION(VERSION); 787 MODULE_LICENSE("GPL"); 788