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_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
  28 #define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
  29 #define BDADDR_BCM4334B0 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb0, 0x34, 0x43}})
  30 #define BDADDR_BCM4345C5 (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0xc5, 0x45, 0x43}})
  31 #define BDADDR_BCM43341B (&(bdaddr_t) {{0xac, 0x1f, 0x00, 0x1b, 0x34, 0x43}})
  32
  33 #define BCM_FW_NAME_LEN                 64
  34 #define BCM_FW_NAME_COUNT_MAX           4
  35 /* For kmalloc-ing the fw-name array instead of putting it on the stack */
  36 typedef char bcm_fw_name[BCM_FW_NAME_LEN];
  37
  38 #ifdef CONFIG_EFI
  39 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
  40 {
  41         efi_guid_t guid = EFI_GUID(0x74b00bd9, 0x805a, 0x4d61, 0xb5, 0x1f,
  42                                    0x43, 0x26, 0x81, 0x23, 0xd1, 0x13);
  43         bdaddr_t efi_bdaddr, bdaddr;
  44         efi_status_t status;
  45         unsigned long len;
  46         int ret;
  47
  48         if (!efi_rt_services_supported(EFI_RT_SUPPORTED_GET_VARIABLE))
  49                 return -EOPNOTSUPP;
  50
  51         len = sizeof(efi_bdaddr);
  52         status = efi.get_variable(L"BDADDR", &guid, NULL, &len, &efi_bdaddr);
  53         if (status != EFI_SUCCESS)
  54                 return -ENXIO;
  55
  56         if (len != sizeof(efi_bdaddr))
  57                 return -EIO;
  58
  59         baswap(&bdaddr, &efi_bdaddr);
  60
  61         ret = btbcm_set_bdaddr(hdev, &bdaddr);
  62         if (ret)
  63                 return ret;
  64
  65         bt_dev_info(hdev, "BCM: Using EFI device address (%pMR)", &bdaddr);
  66         return 0;
  67 }
  68 #else
  69 static int btbcm_set_bdaddr_from_efi(struct hci_dev *hdev)
  70 {
  71         return -EOPNOTSUPP;
  72 }
  73 #endif
  74
  75 int btbcm_check_bdaddr(struct hci_dev *hdev)
  76 {
  77         struct hci_rp_read_bd_addr *bda;
  78         struct sk_buff *skb;
  79
  80         skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
  81                              HCI_INIT_TIMEOUT);
  82         if (IS_ERR(skb)) {
  83                 int err = PTR_ERR(skb);
  84
  85                 bt_dev_err(hdev, "BCM: Reading device address failed (%d)", err);
  86                 return err;
  87         }
  88
  89         if (skb->len != sizeof(*bda)) {
  90                 bt_dev_err(hdev, "BCM: Device address length mismatch");
  91                 kfree_skb(skb);
  92                 return -EIO;
  93         }
  94
  95         bda = (struct hci_rp_read_bd_addr *)skb->data;
  96
  97         /* Check if the address indicates a controller with either an
  98          * invalid or default address. In both cases the device needs
  99          * to be marked as not having a valid address.
 100          *
 101          * The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
 102          * with no configured address.
 103          *
 104          * The address 20:70:02:A0:00:00 indicates a BCM20702A1 controller
 105          * with no configured address.
 106          *
 107          * The address 20:76:A0:00:56:79 indicates a BCM2076B1 controller
 108          * with no configured address.
 109          *
 110          * The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
 111          * with waiting for configuration state.
 112          *
 113          * The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
 114          * with waiting for configuration state.
 115          *
 116          * The address 43:43:A0:12:1F:AC indicates a BCM43430A0 controller
 117          * with no configured address.
 118          */
 119         if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
 120             !bacmp(&bda->bdaddr, BDADDR_BCM20702A1) ||
 121             !bacmp(&bda->bdaddr, BDADDR_BCM2076B1) ||
 122             !bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
 123             !bacmp(&bda->bdaddr, BDADDR_BCM4330B1) ||
 124             !bacmp(&bda->bdaddr, BDADDR_BCM4334B0) ||
 125             !bacmp(&bda->bdaddr, BDADDR_BCM4345C5) ||
 126             !bacmp(&bda->bdaddr, BDADDR_BCM43430A0) ||
 127             !bacmp(&bda->bdaddr, BDADDR_BCM43341B)) {
 128                 /* Try falling back to BDADDR EFI variable */
 129                 if (btbcm_set_bdaddr_from_efi(hdev) != 0) {
 130                         bt_dev_info(hdev, "BCM: Using default device address (%pMR)",
 131                                     &bda->bdaddr);
 132                         set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
 133                 }
 134         }
 135
 136         kfree_skb(skb);
 137
 138         return 0;
 139 }
 140 EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
 141
 142 int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
 143 {
 144         struct sk_buff *skb;
 145         int err;
 146
 147         skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
 148         if (IS_ERR(skb)) {
 149                 err = PTR_ERR(skb);
 150                 bt_dev_err(hdev, "BCM: Change address command failed (%d)", err);
 151                 return err;
 152         }
 153         kfree_skb(skb);
 154
 155         return 0;
 156 }
 157 EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
 158
 159 int btbcm_read_pcm_int_params(struct hci_dev *hdev,
 160                               struct bcm_set_pcm_int_params *params)
 161 {
 162         struct sk_buff *skb;
 163         int err = 0;
 164
 165         skb = __hci_cmd_sync(hdev, 0xfc1d, 0, NULL, HCI_INIT_TIMEOUT);
 166         if (IS_ERR(skb)) {
 167                 err = PTR_ERR(skb);
 168                 bt_dev_err(hdev, "BCM: Read PCM int params failed (%d)", err);
 169                 return err;
 170         }
 171
 172         if (skb->len != 6 || skb->data[0]) {
 173                 bt_dev_err(hdev, "BCM: Read PCM int params length mismatch");
 174                 kfree_skb(skb);
 175                 return -EIO;
 176         }
 177
 178         if (params)
 179                 memcpy(params, skb->data + 1, 5);
 180
 181         kfree_skb(skb);
 182
 183         return 0;
 184 }
 185 EXPORT_SYMBOL_GPL(btbcm_read_pcm_int_params);
 186
 187 int btbcm_write_pcm_int_params(struct hci_dev *hdev,
 188                                const struct bcm_set_pcm_int_params *params)
 189 {
 190         struct sk_buff *skb;
 191         int err;
 192
 193         skb = __hci_cmd_sync(hdev, 0xfc1c, 5, params, HCI_INIT_TIMEOUT);
 194         if (IS_ERR(skb)) {
 195                 err = PTR_ERR(skb);
 196                 bt_dev_err(hdev, "BCM: Write PCM int params failed (%d)", err);
 197                 return err;
 198         }
 199         kfree_skb(skb);
 200
 201         return 0;
 202 }
 203 EXPORT_SYMBOL_GPL(btbcm_write_pcm_int_params);
 204
 205 int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
 206 {
 207         const struct hci_command_hdr *cmd;
 208         const u8 *fw_ptr;
 209         size_t fw_size;
 210         struct sk_buff *skb;
 211         u16 opcode;
 212         int err = 0;
 213
 214         /* Start Download */
 215         skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
 216         if (IS_ERR(skb)) {
 217                 err = PTR_ERR(skb);
 218                 bt_dev_err(hdev, "BCM: Download Minidrv command failed (%d)",
 219                            err);
 220                 goto done;
 221         }
 222         kfree_skb(skb);
 223
 224         /* 50 msec delay after Download Minidrv completes */
 225         msleep(50);
 226
 227         fw_ptr = fw->data;
 228         fw_size = fw->size;
 229
 230         while (fw_size >= sizeof(*cmd)) {
 231                 const u8 *cmd_param;
 232
 233                 cmd = (struct hci_command_hdr *)fw_ptr;
 234                 fw_ptr += sizeof(*cmd);
 235                 fw_size -= sizeof(*cmd);
 236
 237                 if (fw_size < cmd->plen) {
 238                         bt_dev_err(hdev, "BCM: Patch is corrupted");
 239                         err = -EINVAL;
 240                         goto done;
 241                 }
 242
 243                 cmd_param = fw_ptr;
 244                 fw_ptr += cmd->plen;
 245                 fw_size -= cmd->plen;
 246
 247                 opcode = le16_to_cpu(cmd->opcode);
 248
 249                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
 250                                      HCI_INIT_TIMEOUT);
 251                 if (IS_ERR(skb)) {
 252                         err = PTR_ERR(skb);
 253                         bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
 254                                    opcode, err);
 255                         goto done;
 256                 }
 257                 kfree_skb(skb);
 258         }
 259
 260         /* 250 msec delay after Launch Ram completes */
 261         msleep(250);
 262
 263 done:
 264         return err;
 265 }
 266 EXPORT_SYMBOL(btbcm_patchram);
 267
 268 static int btbcm_reset(struct hci_dev *hdev)
 269 {
 270         struct sk_buff *skb;
 271
 272         skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
 273         if (IS_ERR(skb)) {
 274                 int err = PTR_ERR(skb);
 275
 276                 bt_dev_err(hdev, "BCM: Reset failed (%d)", err);
 277                 return err;
 278         }
 279         kfree_skb(skb);
 280
 281         /* 100 msec delay for module to complete reset process */
 282         msleep(100);
 283
 284         return 0;
 285 }
 286
 287 static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
 288 {
 289         struct sk_buff *skb;
 290
 291         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
 292                              HCI_INIT_TIMEOUT);
 293         if (IS_ERR(skb)) {
 294                 bt_dev_err(hdev, "BCM: Reading local name failed (%ld)",
 295                            PTR_ERR(skb));
 296                 return skb;
 297         }
 298
 299         if (skb->len != sizeof(struct hci_rp_read_local_name)) {
 300                 bt_dev_err(hdev, "BCM: Local name length mismatch");
 301                 kfree_skb(skb);
 302                 return ERR_PTR(-EIO);
 303         }
 304
 305         return skb;
 306 }
 307
 308 static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
 309 {
 310         struct sk_buff *skb;
 311
 312         skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
 313                              HCI_INIT_TIMEOUT);
 314         if (IS_ERR(skb)) {
 315                 bt_dev_err(hdev, "BCM: Reading local version info failed (%ld)",
 316                            PTR_ERR(skb));
 317                 return skb;
 318         }
 319
 320         if (skb->len != sizeof(struct hci_rp_read_local_version)) {
 321                 bt_dev_err(hdev, "BCM: Local version length mismatch");
 322                 kfree_skb(skb);
 323                 return ERR_PTR(-EIO);
 324         }
 325
 326         return skb;
 327 }
 328
 329 static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
 330 {
 331         struct sk_buff *skb;
 332
 333         skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
 334         if (IS_ERR(skb)) {
 335                 bt_dev_err(hdev, "BCM: Read verbose config info failed (%ld)",
 336                            PTR_ERR(skb));
 337                 return skb;
 338         }
 339
 340         if (skb->len != 7) {
 341                 bt_dev_err(hdev, "BCM: Verbose config length mismatch");
 342                 kfree_skb(skb);
 343                 return ERR_PTR(-EIO);
 344         }
 345
 346         return skb;
 347 }
 348
 349 static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
 350 {
 351         struct sk_buff *skb;
 352
 353         skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
 354         if (IS_ERR(skb)) {
 355                 bt_dev_err(hdev, "BCM: Read controller features failed (%ld)",
 356                            PTR_ERR(skb));
 357                 return skb;
 358         }
 359
 360         if (skb->len != 9) {
 361                 bt_dev_err(hdev, "BCM: Controller features length mismatch");
 362                 kfree_skb(skb);
 363                 return ERR_PTR(-EIO);
 364         }
 365
 366         return skb;
 367 }
 368
 369 static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
 370 {
 371         struct sk_buff *skb;
 372
 373         skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
 374         if (IS_ERR(skb)) {
 375                 bt_dev_err(hdev, "BCM: Read USB product info failed (%ld)",
 376                            PTR_ERR(skb));
 377                 return skb;
 378         }
 379
 380         if (skb->len != 5) {
 381                 bt_dev_err(hdev, "BCM: USB product length mismatch");
 382                 kfree_skb(skb);
 383                 return ERR_PTR(-EIO);
 384         }
 385
 386         return skb;
 387 }
 388
 389 static const struct dmi_system_id disable_broken_read_transmit_power[] = {
 390         {
 391                  .matches = {
 392                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 393                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,1"),
 394                 },
 395         },
 396         {
 397                  .matches = {
 398                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 399                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,2"),
 400                 },
 401         },
 402         {
 403                  .matches = {
 404                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 405                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro16,4"),
 406                 },
 407         },
 408         {
 409                  .matches = {
 410                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 411                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,1"),
 412                 },
 413         },
 414         {
 415                  .matches = {
 416                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 417                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir8,2"),
 418                 },
 419         },
 420         {
 421                  .matches = {
 422                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 423                         DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,1"),
 424                 },
 425         },
 426         {
 427                  .matches = {
 428                         DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
 429                         DMI_MATCH(DMI_PRODUCT_NAME, "iMac20,2"),
 430                 },
 431         },
 432         { }
 433 };
 434
 435 static int btbcm_read_info(struct hci_dev *hdev)
 436 {
 437         struct sk_buff *skb;
 438
 439         /* Read Verbose Config Version Info */
 440         skb = btbcm_read_verbose_config(hdev);
 441         if (IS_ERR(skb))
 442                 return PTR_ERR(skb);
 443
 444         bt_dev_info(hdev, "BCM: chip id %u", skb->data[1]);
 445         kfree_skb(skb);
 446
 447         return 0;
 448 }
 449
 450 static int btbcm_print_controller_features(struct hci_dev *hdev)
 451 {
 452         struct sk_buff *skb;
 453
 454         /* Read Controller Features */
 455         skb = btbcm_read_controller_features(hdev);
 456         if (IS_ERR(skb))
 457                 return PTR_ERR(skb);
 458
 459         bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
 460         kfree_skb(skb);
 461
 462         /* Read DMI and disable broken Read LE Min/Max Tx Power */
 463         if (dmi_first_match(disable_broken_read_transmit_power))
 464                 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
 465
 466         return 0;
 467 }
 468
 469 static int btbcm_print_local_name(struct hci_dev *hdev)
 470 {
 471         struct sk_buff *skb;
 472
 473         /* Read Local Name */
 474         skb = btbcm_read_local_name(hdev);
 475         if (IS_ERR(skb))
 476                 return PTR_ERR(skb);
 477
 478         bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
 479         kfree_skb(skb);
 480
 481         return 0;
 482 }
 483
 484 struct bcm_subver_table {
 485         u16 subver;
 486         const char *name;
 487 };
 488
 489 static const struct bcm_subver_table bcm_uart_subver_table[] = {
 490         { 0x1111, "BCM4362A2"   },      /* 000.017.017 */
 491         { 0x4103, "BCM4330B1"   },      /* 002.001.003 */
 492         { 0x410d, "BCM4334B0"   },      /* 002.001.013 */
 493         { 0x410e, "BCM43341B0"  },      /* 002.001.014 */
 494         { 0x4204, "BCM2076B1"   },      /* 002.002.004 */
 495         { 0x4406, "BCM4324B3"   },      /* 002.004.006 */
 496         { 0x4606, "BCM4324B5"   },      /* 002.006.006 */
 497         { 0x6109, "BCM4335C0"   },      /* 003.001.009 */
 498         { 0x610c, "BCM4354"     },      /* 003.001.012 */
 499         { 0x2122, "BCM4343A0"   },      /* 001.001.034 */
 500         { 0x2209, "BCM43430A1"  },      /* 001.002.009 */
 501         { 0x6119, "BCM4345C0"   },      /* 003.001.025 */
 502         { 0x6606, "BCM4345C5"   },      /* 003.006.006 */
 503         { 0x230f, "BCM4356A2"   },      /* 001.003.015 */
 504         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
 505         { 0x420d, "BCM4349B1"   },      /* 002.002.013 */
 506         { 0x420e, "BCM4349B1"   },      /* 002.002.014 */
 507         { 0x4217, "BCM4329B1"   },      /* 002.002.023 */
 508         { 0x6106, "BCM4359C0"   },      /* 003.001.006 */
 509         { 0x4106, "BCM4335A0"   },      /* 002.001.006 */
 510         { 0x410c, "BCM43430B0"  },      /* 002.001.012 */
 511         { 0x2119, "BCM4373A0"   },      /* 001.001.025 */
 512         { }
 513 };
 514
 515 static const struct bcm_subver_table bcm_usb_subver_table[] = {
 516         { 0x2105, "BCM20703A1"  },      /* 001.001.005 */
 517         { 0x210b, "BCM43142A0"  },      /* 001.001.011 */
 518         { 0x2112, "BCM4314A0"   },      /* 001.001.018 */
 519         { 0x2118, "BCM20702A0"  },      /* 001.001.024 */
 520         { 0x2126, "BCM4335A0"   },      /* 001.001.038 */
 521         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
 522         { 0x230f, "BCM4356A2"   },      /* 001.003.015 */
 523         { 0x4106, "BCM4335B0"   },      /* 002.001.006 */
 524         { 0x410e, "BCM20702B0"  },      /* 002.001.014 */
 525         { 0x6109, "BCM4335C0"   },      /* 003.001.009 */
 526         { 0x610c, "BCM4354"     },      /* 003.001.012 */
 527         { 0x6607, "BCM4350C5"   },      /* 003.006.007 */
 528         { }
 529 };
 530
 531 /*
 532  * This currently only looks up the device tree board appendix,
 533  * but can be expanded to other mechanisms.
 534  */
 535 static const char *btbcm_get_board_name(struct device *dev)
 536 {
 537 #ifdef CONFIG_OF
 538         struct device_node *root;
 539         char *board_type;
 540         const char *tmp;
 541         int len;
 542         int i;
 543
 544         root = of_find_node_by_path("/");
 545         if (!root)
 546                 return NULL;
 547
 548         if (of_property_read_string_index(root, "compatible", 0, &tmp))
 549                 return NULL;
 550
 551         /* get rid of any '/' in the compatible string */
 552         len = strlen(tmp) + 1;
 553         board_type = devm_kzalloc(dev, len, GFP_KERNEL);
 554         strscpy(board_type, tmp, len);
 555         for (i = 0; i < len; i++) {
 556                 if (board_type[i] == '/')
 557                         board_type[i] = '-';
 558         }
 559         of_node_put(root);
 560
 561         return board_type;
 562 #else
 563         return NULL;
 564 #endif
 565 }
 566
 567 int btbcm_initialize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
 568 {
 569         u16 subver, rev, pid, vid;
 570         struct sk_buff *skb;
 571         struct hci_rp_read_local_version *ver;
 572         const struct bcm_subver_table *bcm_subver_table;
 573         const char *hw_name = NULL;
 574         const char *board_name;
 575         char postfix[16] = "";
 576         int fw_name_count = 0;
 577         bcm_fw_name *fw_name;
 578         const struct firmware *fw;
 579         int i, err;
 580
 581         board_name = btbcm_get_board_name(&hdev->dev);
 582
 583         /* Reset */
 584         err = btbcm_reset(hdev);
 585         if (err)
 586                 return err;
 587
 588         /* Read Local Version Info */
 589         skb = btbcm_read_local_version(hdev);
 590         if (IS_ERR(skb))
 591                 return PTR_ERR(skb);
 592
 593         ver = (struct hci_rp_read_local_version *)skb->data;
 594         rev = le16_to_cpu(ver->hci_rev);
 595         subver = le16_to_cpu(ver->lmp_subver);
 596         kfree_skb(skb);
 597
 598         /* Read controller information */
 599         if (!(*fw_load_done)) {
 600                 err = btbcm_read_info(hdev);
 601                 if (err)
 602                         return err;
 603         }
 604
 605         if (!use_autobaud_mode) {
 606                 err = btbcm_print_controller_features(hdev);
 607                 if (err)
 608                         return err;
 609
 610                 err = btbcm_print_local_name(hdev);
 611                 if (err)
 612                         return err;
 613         }
 614
 615         bcm_subver_table = (hdev->bus == HCI_USB) ? bcm_usb_subver_table :
 616                                                     bcm_uart_subver_table;
 617
 618         for (i = 0; bcm_subver_table[i].name; i++) {
 619                 if (subver == bcm_subver_table[i].subver) {
 620                         hw_name = bcm_subver_table[i].name;
 621                         break;
 622                 }
 623         }
 624
 625         bt_dev_info(hdev, "%s (%3.3u.%3.3u.%3.3u) build %4.4u",
 626                     hw_name ? hw_name : "BCM", (subver & 0xe000) >> 13,
 627                     (subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
 628
 629         if (*fw_load_done)
 630                 return 0;
 631
 632         if (hdev->bus == HCI_USB) {
 633                 /* Read USB Product Info */
 634                 skb = btbcm_read_usb_product(hdev);
 635                 if (IS_ERR(skb))
 636                         return PTR_ERR(skb);
 637
 638                 vid = get_unaligned_le16(skb->data + 1);
 639                 pid = get_unaligned_le16(skb->data + 3);
 640                 kfree_skb(skb);
 641
 642                 snprintf(postfix, sizeof(postfix), "-%4.4x-%4.4x", vid, pid);
 643         }
 644
 645         fw_name = kmalloc(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
 646         if (!fw_name)
 647                 return -ENOMEM;
 648
 649         if (hw_name) {
 650                 if (board_name) {
 651                         snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 652                                  "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
 653                         fw_name_count++;
 654                 }
 655                 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 656                          "brcm/%s%s.hcd", hw_name, postfix);
 657                 fw_name_count++;
 658         }
 659
 660         if (board_name) {
 661                 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 662                          "brcm/BCM%s.%s.hcd", postfix, board_name);
 663                 fw_name_count++;
 664         }
 665         snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 666                  "brcm/BCM%s.hcd", postfix);
 667         fw_name_count++;
 668
 669         for (i = 0; i < fw_name_count; i++) {
 670                 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
 671                 if (err == 0) {
 672                         bt_dev_info(hdev, "%s '%s' Patch",
 673                                     hw_name ? hw_name : "BCM", fw_name[i]);
 674                         *fw_load_done = true;
 675                         break;
 676                 }
 677         }
 678
 679         if (*fw_load_done) {
 680                 err = btbcm_patchram(hdev, fw);
 681                 if (err)
 682                         bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
 683
 684                 release_firmware(fw);
 685         } else {
 686                 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
 687                 for (i = 0; i < fw_name_count; i++)
 688                         bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
 689         }
 690
 691         kfree(fw_name);
 692         return 0;
 693 }
 694 EXPORT_SYMBOL_GPL(btbcm_initialize);
 695
 696 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
 697 {
 698         int err;
 699
 700         /* Re-initialize if necessary */
 701         if (*fw_load_done) {
 702                 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
 703                 if (err)
 704                         return err;
 705         }
 706
 707         btbcm_check_bdaddr(hdev);
 708
 709         set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 710
 711         return 0;
 712 }
 713 EXPORT_SYMBOL_GPL(btbcm_finalize);
 714
 715 int btbcm_setup_patchram(struct hci_dev *hdev)
 716 {
 717         bool fw_load_done = false;
 718         bool use_autobaud_mode = false;
 719         int err;
 720
 721         /* Initialize */
 722         err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
 723         if (err)
 724                 return err;
 725
 726         /* Re-initialize after loading Patch */
 727         return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
 728 }
 729 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
 730
 731 int btbcm_setup_apple(struct hci_dev *hdev)
 732 {
 733         struct sk_buff *skb;
 734         int err;
 735
 736         /* Reset */
 737         err = btbcm_reset(hdev);
 738         if (err)
 739                 return err;
 740
 741         /* Read Verbose Config Version Info */
 742         skb = btbcm_read_verbose_config(hdev);
 743         if (!IS_ERR(skb)) {
 744                 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
 745                             skb->data[1], get_unaligned_le16(skb->data + 5));
 746                 kfree_skb(skb);
 747         }
 748
 749         /* Read USB Product Info */
 750         skb = btbcm_read_usb_product(hdev);
 751         if (!IS_ERR(skb)) {
 752                 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
 753                             get_unaligned_le16(skb->data + 1),
 754                             get_unaligned_le16(skb->data + 3));
 755                 kfree_skb(skb);
 756         }
 757
 758         /* Read Controller Features */
 759         skb = btbcm_read_controller_features(hdev);
 760         if (!IS_ERR(skb)) {
 761                 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
 762                 kfree_skb(skb);
 763         }
 764
 765         /* Read Local Name */
 766         skb = btbcm_read_local_name(hdev);
 767         if (!IS_ERR(skb)) {
 768                 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
 769                 kfree_skb(skb);
 770         }
 771
 772         set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 773
 774         return 0;
 775 }
 776 EXPORT_SYMBOL_GPL(btbcm_setup_apple);
 777
 778 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
 779 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
 780 MODULE_VERSION(VERSION);
 781 MODULE_LICENSE("GPL");