606 lines
14 KiB
C
606 lines
14 KiB
C
/*
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*
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* Bluetooth support for Broadcom devices
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*
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* Copyright (C) 2015 Intel Corporation
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <linux/module.h>
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#include <linux/firmware.h>
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#include <asm/unaligned.h>
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#include <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btbcm.h"
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#define VERSION "0.1"
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#define BDADDR_BCM20702A0 (&(bdaddr_t) {{0x00, 0xa0, 0x02, 0x70, 0x20, 0x00}})
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#define BDADDR_BCM4324B3 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb3, 0x24, 0x43}})
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#define BDADDR_BCM4330B1 (&(bdaddr_t) {{0x00, 0x00, 0x00, 0xb1, 0x30, 0x43}})
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int btbcm_check_bdaddr(struct hci_dev *hdev)
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{
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struct hci_rp_read_bd_addr *bda;
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Reading device address failed (%d)",
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hdev->name, err);
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return err;
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}
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if (skb->len != sizeof(*bda)) {
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BT_ERR("%s: BCM: Device address length mismatch", hdev->name);
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kfree_skb(skb);
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return -EIO;
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}
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bda = (struct hci_rp_read_bd_addr *)skb->data;
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/* Check if the address indicates a controller with either an
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* invalid or default address. In both cases the device needs
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* to be marked as not having a valid address.
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*
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* The address 00:20:70:02:A0:00 indicates a BCM20702A0 controller
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* with no configured address.
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*
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* The address 43:24:B3:00:00:00 indicates a BCM4324B3 controller
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* with waiting for configuration state.
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*
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* The address 43:30:B1:00:00:00 indicates a BCM4330B1 controller
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* with waiting for configuration state.
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*/
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if (!bacmp(&bda->bdaddr, BDADDR_BCM20702A0) ||
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!bacmp(&bda->bdaddr, BDADDR_BCM4324B3) ||
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!bacmp(&bda->bdaddr, BDADDR_BCM4330B1)) {
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BT_INFO("%s: BCM: Using default device address (%pMR)",
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hdev->name, &bda->bdaddr);
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set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_check_bdaddr);
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int btbcm_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
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{
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struct sk_buff *skb;
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int err;
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skb = __hci_cmd_sync(hdev, 0xfc01, 6, bdaddr, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Change address command failed (%d)",
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hdev->name, err);
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return err;
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}
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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_set_bdaddr);
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int btbcm_patchram(struct hci_dev *hdev, const struct firmware *fw)
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{
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const struct hci_command_hdr *cmd;
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const u8 *fw_ptr;
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size_t fw_size;
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struct sk_buff *skb;
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u16 opcode;
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int err = 0;
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/* Start Download */
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skb = __hci_cmd_sync(hdev, 0xfc2e, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Download Minidrv command failed (%d)",
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hdev->name, err);
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goto done;
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}
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kfree_skb(skb);
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/* 50 msec delay after Download Minidrv completes */
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msleep(50);
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fw_ptr = fw->data;
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fw_size = fw->size;
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while (fw_size >= sizeof(*cmd)) {
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const u8 *cmd_param;
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cmd = (struct hci_command_hdr *)fw_ptr;
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fw_ptr += sizeof(*cmd);
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fw_size -= sizeof(*cmd);
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if (fw_size < cmd->plen) {
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BT_ERR("%s: BCM: Patch is corrupted", hdev->name);
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err = -EINVAL;
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goto done;
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}
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cmd_param = fw_ptr;
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fw_ptr += cmd->plen;
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fw_size -= cmd->plen;
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opcode = le16_to_cpu(cmd->opcode);
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skb = __hci_cmd_sync(hdev, opcode, cmd->plen, cmd_param,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Patch command %04x failed (%d)",
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hdev->name, opcode, err);
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goto done;
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}
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kfree_skb(skb);
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}
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/* 250 msec delay after Launch Ram completes */
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msleep(250);
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done:
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return err;
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}
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EXPORT_SYMBOL(btbcm_patchram);
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static int btbcm_reset(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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int err = PTR_ERR(skb);
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BT_ERR("%s: BCM: Reset failed (%d)", hdev->name, err);
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return err;
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}
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kfree_skb(skb);
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/* 100 msec delay for module to complete reset process */
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msleep(100);
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return 0;
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}
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static struct sk_buff *btbcm_read_local_name(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_NAME, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Reading local name failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != sizeof(struct hci_rp_read_local_name)) {
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BT_ERR("%s: BCM: Local name length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_local_version(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
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HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Reading local version info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != sizeof(struct hci_rp_read_local_version)) {
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BT_ERR("%s: BCM: Local version length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_verbose_config(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, 0xfc79, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Read verbose config info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != 7) {
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BT_ERR("%s: BCM: Verbose config length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_controller_features(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, 0xfc6e, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Read controller features failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != 9) {
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BT_ERR("%s: BCM: Controller features length mismatch",
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hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static struct sk_buff *btbcm_read_usb_product(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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skb = __hci_cmd_sync(hdev, 0xfc5a, 0, NULL, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: BCM: Read USB product info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return skb;
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}
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if (skb->len != 5) {
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BT_ERR("%s: BCM: USB product length mismatch", hdev->name);
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kfree_skb(skb);
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return ERR_PTR(-EIO);
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}
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return skb;
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}
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static int btbcm_read_info(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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/* Read Verbose Config Version Info */
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skb = btbcm_read_verbose_config(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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BT_INFO("%s: BCM: chip id %u", hdev->name, skb->data[1]);
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kfree_skb(skb);
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/* Read Controller Features */
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skb = btbcm_read_controller_features(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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BT_INFO("%s: BCM: features 0x%2.2x", hdev->name, skb->data[1]);
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kfree_skb(skb);
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/* Read Local Name */
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skb = btbcm_read_local_name(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
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kfree_skb(skb);
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return 0;
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}
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static const struct {
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u16 subver;
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const char *name;
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} bcm_uart_subver_table[] = {
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{ 0x4103, "BCM4330B1" }, /* 002.001.003 */
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{ 0x410e, "BCM43341B0" }, /* 002.001.014 */
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{ 0x4406, "BCM4324B3" }, /* 002.004.006 */
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{ 0x610c, "BCM4354" }, /* 003.001.012 */
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{ 0x2209, "BCM43430A1" }, /* 001.002.009 */
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{ }
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};
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int btbcm_initialize(struct hci_dev *hdev, char *fw_name, size_t len)
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{
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u16 subver, rev;
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const char *hw_name = NULL;
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struct sk_buff *skb;
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struct hci_rp_read_local_version *ver;
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int i, err;
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/* Reset */
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err = btbcm_reset(hdev);
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if (err)
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return err;
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/* Read Local Version Info */
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skb = btbcm_read_local_version(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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ver = (struct hci_rp_read_local_version *)skb->data;
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rev = le16_to_cpu(ver->hci_rev);
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subver = le16_to_cpu(ver->lmp_subver);
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kfree_skb(skb);
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/* Read controller information */
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err = btbcm_read_info(hdev);
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if (err)
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return err;
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switch ((rev & 0xf000) >> 12) {
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case 0:
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case 1:
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case 3:
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for (i = 0; bcm_uart_subver_table[i].name; i++) {
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if (subver == bcm_uart_subver_table[i].subver) {
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hw_name = bcm_uart_subver_table[i].name;
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break;
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}
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}
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snprintf(fw_name, len, "brcm/%s.hcd", hw_name ? : "BCM");
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break;
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default:
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return 0;
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}
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BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
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hw_name ? : "BCM", (subver & 0xe000) >> 13,
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(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_initialize);
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int btbcm_finalize(struct hci_dev *hdev)
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{
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struct sk_buff *skb;
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struct hci_rp_read_local_version *ver;
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u16 subver, rev;
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int err;
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/* Reset */
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err = btbcm_reset(hdev);
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if (err)
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return err;
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/* Read Local Version Info */
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skb = btbcm_read_local_version(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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ver = (struct hci_rp_read_local_version *)skb->data;
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rev = le16_to_cpu(ver->hci_rev);
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subver = le16_to_cpu(ver->lmp_subver);
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kfree_skb(skb);
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BT_INFO("%s: BCM (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
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(subver & 0xe000) >> 13, (subver & 0x1f00) >> 8,
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(subver & 0x00ff), rev & 0x0fff);
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btbcm_check_bdaddr(hdev);
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set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btbcm_finalize);
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static const struct {
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u16 subver;
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const char *name;
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} bcm_usb_subver_table[] = {
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{ 0x210b, "BCM43142A0" }, /* 001.001.011 */
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{ 0x2112, "BCM4314A0" }, /* 001.001.018 */
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{ 0x2118, "BCM20702A0" }, /* 001.001.024 */
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{ 0x2126, "BCM4335A0" }, /* 001.001.038 */
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{ 0x220e, "BCM20702A1" }, /* 001.002.014 */
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{ 0x230f, "BCM4354A2" }, /* 001.003.015 */
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{ 0x4106, "BCM4335B0" }, /* 002.001.006 */
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{ 0x410e, "BCM20702B0" }, /* 002.001.014 */
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{ 0x6109, "BCM4335C0" }, /* 003.001.009 */
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{ 0x610c, "BCM4354" }, /* 003.001.012 */
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{ }
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};
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int btbcm_setup_patchram(struct hci_dev *hdev)
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{
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char fw_name[64];
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const struct firmware *fw;
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u16 subver, rev, pid, vid;
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const char *hw_name = NULL;
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struct sk_buff *skb;
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struct hci_rp_read_local_version *ver;
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int i, err;
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/* Reset */
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err = btbcm_reset(hdev);
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if (err)
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return err;
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/* Read Local Version Info */
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skb = btbcm_read_local_version(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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ver = (struct hci_rp_read_local_version *)skb->data;
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rev = le16_to_cpu(ver->hci_rev);
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subver = le16_to_cpu(ver->lmp_subver);
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kfree_skb(skb);
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/* Read controller information */
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err = btbcm_read_info(hdev);
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if (err)
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return err;
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switch ((rev & 0xf000) >> 12) {
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case 0:
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case 3:
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for (i = 0; bcm_uart_subver_table[i].name; i++) {
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if (subver == bcm_uart_subver_table[i].subver) {
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hw_name = bcm_uart_subver_table[i].name;
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break;
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}
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}
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snprintf(fw_name, sizeof(fw_name), "brcm/%s.hcd",
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hw_name ? : "BCM");
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break;
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case 1:
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case 2:
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/* Read USB Product Info */
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skb = btbcm_read_usb_product(hdev);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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vid = get_unaligned_le16(skb->data + 1);
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pid = get_unaligned_le16(skb->data + 3);
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kfree_skb(skb);
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for (i = 0; bcm_usb_subver_table[i].name; i++) {
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if (subver == bcm_usb_subver_table[i].subver) {
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hw_name = bcm_usb_subver_table[i].name;
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break;
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}
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}
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snprintf(fw_name, sizeof(fw_name), "brcm/%s-%4.4x-%4.4x.hcd",
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hw_name ? : "BCM", vid, pid);
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break;
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default:
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return 0;
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}
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BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
|
|
hw_name ? : "BCM", (subver & 0xe000) >> 13,
|
|
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
|
|
|
|
err = request_firmware(&fw, fw_name, &hdev->dev);
|
|
if (err < 0) {
|
|
BT_INFO("%s: BCM: Patch %s not found", hdev->name, fw_name);
|
|
goto done;
|
|
}
|
|
|
|
btbcm_patchram(hdev, fw);
|
|
|
|
release_firmware(fw);
|
|
|
|
/* Reset */
|
|
err = btbcm_reset(hdev);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Read Local Version Info */
|
|
skb = btbcm_read_local_version(hdev);
|
|
if (IS_ERR(skb))
|
|
return PTR_ERR(skb);
|
|
|
|
ver = (struct hci_rp_read_local_version *)skb->data;
|
|
rev = le16_to_cpu(ver->hci_rev);
|
|
subver = le16_to_cpu(ver->lmp_subver);
|
|
kfree_skb(skb);
|
|
|
|
BT_INFO("%s: %s (%3.3u.%3.3u.%3.3u) build %4.4u", hdev->name,
|
|
hw_name ? : "BCM", (subver & 0xe000) >> 13,
|
|
(subver & 0x1f00) >> 8, (subver & 0x00ff), rev & 0x0fff);
|
|
|
|
/* Read Local Name */
|
|
skb = btbcm_read_local_name(hdev);
|
|
if (IS_ERR(skb))
|
|
return PTR_ERR(skb);
|
|
|
|
BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
|
|
kfree_skb(skb);
|
|
|
|
done:
|
|
btbcm_check_bdaddr(hdev);
|
|
|
|
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btbcm_setup_patchram);
|
|
|
|
int btbcm_setup_apple(struct hci_dev *hdev)
|
|
{
|
|
struct sk_buff *skb;
|
|
int err;
|
|
|
|
/* Reset */
|
|
err = btbcm_reset(hdev);
|
|
if (err)
|
|
return err;
|
|
|
|
/* Read Verbose Config Version Info */
|
|
skb = btbcm_read_verbose_config(hdev);
|
|
if (!IS_ERR(skb)) {
|
|
BT_INFO("%s: BCM: chip id %u build %4.4u", hdev->name,
|
|
skb->data[1], get_unaligned_le16(skb->data + 5));
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/* Read USB Product Info */
|
|
skb = btbcm_read_usb_product(hdev);
|
|
if (!IS_ERR(skb)) {
|
|
BT_INFO("%s: BCM: product %4.4x:%4.4x", hdev->name,
|
|
get_unaligned_le16(skb->data + 1),
|
|
get_unaligned_le16(skb->data + 3));
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/* Read Controller Features */
|
|
skb = btbcm_read_controller_features(hdev);
|
|
if (!IS_ERR(skb)) {
|
|
BT_INFO("%s: BCM: features 0x%2.2x", hdev->name, skb->data[1]);
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
/* Read Local Name */
|
|
skb = btbcm_read_local_name(hdev);
|
|
if (!IS_ERR(skb)) {
|
|
BT_INFO("%s: %s", hdev->name, (char *)(skb->data + 1));
|
|
kfree_skb(skb);
|
|
}
|
|
|
|
set_bit(HCI_QUIRK_STRICT_DUPLICATE_FILTER, &hdev->quirks);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btbcm_setup_apple);
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Bluetooth support for Broadcom devices ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|