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 <linux/string.h>
  15 #include <asm/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                         set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
 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                 goto done;
 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                         err = -EINVAL;
 246                         goto done;
 247                 }
 248
 249                 cmd_param = fw_ptr;
 250                 fw_ptr += cmd->plen;
 251                 fw_size -= cmd->plen;
 252
 253                 opcode = le16_to_cpu(cmd->opcode);
 254
 255                 skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
 256                                      HCI_INIT_TIMEOUT);
 257                 if (IS_ERR(skb)) {
 258                         err = PTR_ERR(skb);
 259                         bt_dev_err(hdev, "BCM: Patch command %04x failed (%d)",
 260                                    opcode, err);
 261                         goto done;
 262                 }
 263                 kfree_skb(skb);
 264         }
 265
 266         /* 250 msec delay after Launch Ram completes */
 267         msleep(250);
 268
 269 done:
 270         return err;
 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                 set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
 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         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
 511         { 0x420d, "BCM4349B1"   },      /* 002.002.013 */
 512         { 0x420e, "BCM4349B1"   },      /* 002.002.014 */
 513         { 0x4217, "BCM4329B1"   },      /* 002.002.023 */
 514         { 0x6106, "BCM4359C0"   },      /* 003.001.006 */
 515         { 0x4106, "BCM4335A0"   },      /* 002.001.006 */
 516         { 0x410c, "BCM43430B0"  },      /* 002.001.012 */
 517         { 0x2119, "BCM4373A0"   },      /* 001.001.025 */
 518         { }
 519 };
 520
 521 static const struct bcm_subver_table bcm_usb_subver_table[] = {
 522         { 0x2105, "BCM20703A1"  },      /* 001.001.005 */
 523         { 0x210b, "BCM43142A0"  },      /* 001.001.011 */
 524         { 0x2112, "BCM4314A0"   },      /* 001.001.018 */
 525         { 0x2118, "BCM20702A0"  },      /* 001.001.024 */
 526         { 0x2126, "BCM4335A0"   },      /* 001.001.038 */
 527         { 0x220e, "BCM20702A1"  },      /* 001.002.014 */
 528         { 0x230f, "BCM4356A2"   },      /* 001.003.015 */
 529         { 0x4106, "BCM4335B0"   },      /* 002.001.006 */
 530         { 0x410e, "BCM20702B0"  },      /* 002.001.014 */
 531         { 0x6109, "BCM4335C0"   },      /* 003.001.009 */
 532         { 0x610c, "BCM4354"     },      /* 003.001.012 */
 533         { 0x6607, "BCM4350C5"   },      /* 003.006.007 */
 534         { }
 535 };
 536
 537 /*
 538  * This currently only looks up the device tree board appendix,
 539  * but can be expanded to other mechanisms.
 540  */
 541 static const char *btbcm_get_board_name(struct device *dev)
 542 {
 543 #ifdef CONFIG_OF
 544         struct device_node *root;
 545         char *board_type;
 546         const char *tmp;
 547
 548         root = of_find_node_by_path("/");
 549         if (!root)
 550                 return NULL;
 551
 552         if (of_property_read_string_index(root, "compatible", 0, &tmp))
 553                 return NULL;
 554
 555         /* get rid of any '/' in the compatible string */
 556         board_type = devm_kstrdup(dev, tmp, GFP_KERNEL);
 557         strreplace(board_type, '/', '-');
 558         of_node_put(root);
 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(BCM_FW_NAME_COUNT_MAX * BCM_FW_NAME_LEN, GFP_KERNEL);
 645         if (!fw_name)
 646                 return -ENOMEM;
 647
 648         if (hw_name) {
 649                 if (board_name) {
 650                         snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 651                                  "brcm/%s%s.%s.hcd", hw_name, postfix, board_name);
 652                         fw_name_count++;
 653                 }
 654                 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 655                          "brcm/%s%s.hcd", hw_name, postfix);
 656                 fw_name_count++;
 657         }
 658
 659         if (board_name) {
 660                 snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 661                          "brcm/BCM%s.%s.hcd", postfix, board_name);
 662                 fw_name_count++;
 663         }
 664         snprintf(fw_name[fw_name_count], BCM_FW_NAME_LEN,
 665                  "brcm/BCM%s.hcd", postfix);
 666         fw_name_count++;
 667
 668         for (i = 0; i < fw_name_count; i++) {
 669                 err = firmware_request_nowarn(&fw, fw_name[i], &hdev->dev);
 670                 if (err == 0) {
 671                         bt_dev_info(hdev, "%s '%s' Patch",
 672                                     hw_name ? hw_name : "BCM", fw_name[i]);
 673                         *fw_load_done = true;
 674                         break;
 675                 }
 676         }
 677
 678         if (*fw_load_done) {
 679                 err = btbcm_patchram(hdev, fw);
 680                 if (err)
 681                         bt_dev_info(hdev, "BCM: Patch failed (%d)", err);
 682
 683                 release_firmware(fw);
 684         } else {
 685                 bt_dev_err(hdev, "BCM: firmware Patch file not found, tried:");
 686                 for (i = 0; i < fw_name_count; i++)
 687                         bt_dev_err(hdev, "BCM: '%s'", fw_name[i]);
 688         }
 689
 690         kfree(fw_name);
 691         return 0;
 692 }
 693 EXPORT_SYMBOL_GPL(btbcm_initialize);
 694
 695 int btbcm_finalize(struct hci_dev *hdev, bool *fw_load_done, bool use_autobaud_mode)
 696 {
 697         int err;
 698
 699         /* Re-initialize if necessary */
 700         if (*fw_load_done) {
 701                 err = btbcm_initialize(hdev, fw_load_done, use_autobaud_mode);
 702                 if (err)
 703                         return err;
 704         }
 705
 706         btbcm_check_bdaddr(hdev);
 707
 708         set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 709
 710         return 0;
 711 }
 712 EXPORT_SYMBOL_GPL(btbcm_finalize);
 713
 714 int btbcm_setup_patchram(struct hci_dev *hdev)
 715 {
 716         bool fw_load_done = false;
 717         bool use_autobaud_mode = false;
 718         int err;
 719
 720         /* Initialize */
 721         err = btbcm_initialize(hdev, &fw_load_done, use_autobaud_mode);
 722         if (err)
 723                 return err;
 724
 725         /* Re-initialize after loading Patch */
 726         return btbcm_finalize(hdev, &fw_load_done, use_autobaud_mode);
 727 }
 728 EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
 729
 730 int btbcm_setup_apple(struct hci_dev *hdev)
 731 {
 732         struct sk_buff *skb;
 733         int err;
 734
 735         /* Reset */
 736         err = btbcm_reset(hdev);
 737         if (err)
 738                 return err;
 739
 740         /* Read Verbose Config Version Info */
 741         skb = btbcm_read_verbose_config(hdev);
 742         if (!IS_ERR(skb)) {
 743                 bt_dev_info(hdev, "BCM: chip id %u build %4.4u",
 744                             skb->data[1], get_unaligned_le16(skb->data + 5));
 745                 kfree_skb(skb);
 746         }
 747
 748         /* Read USB Product Info */
 749         skb = btbcm_read_usb_product(hdev);
 750         if (!IS_ERR(skb)) {
 751                 bt_dev_info(hdev, "BCM: product %4.4x:%4.4x",
 752                             get_unaligned_le16(skb->data + 1),
 753                             get_unaligned_le16(skb->data + 3));
 754                 kfree_skb(skb);
 755         }
 756
 757         /* Read Controller Features */
 758         skb = btbcm_read_controller_features(hdev);
 759         if (!IS_ERR(skb)) {
 760                 bt_dev_info(hdev, "BCM: features 0x%2.2x", skb->data[1]);
 761                 kfree_skb(skb);
 762         }
 763
 764         /* Read Local Name */
 765         skb = btbcm_read_local_name(hdev);
 766         if (!IS_ERR(skb)) {
 767                 bt_dev_info(hdev, "%s", (char *)(skb->data + 1));
 768                 kfree_skb(skb);
 769         }
 770
 771         set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
 772
 773         return 0;
 774 }
 775 EXPORT_SYMBOL_GPL(btbcm_setup_apple);
 776
 777 MODULE_AUTHOR("Marcel Holtmann <[email protected]>");
 778 MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
 779 MODULE_VERSION(VERSION);
 780 MODULE_LICENSE("GPL");