drivers/bluetooth/btbcm.c

   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");