178 lines
4.5 KiB
C
178 lines
4.5 KiB
C
/*
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*
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* Bluetooth support for Intel 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 <net/bluetooth/bluetooth.h>
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#include <net/bluetooth/hci_core.h>
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#include "btintel.h"
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#define VERSION "0.1"
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#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
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int btintel_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: Reading Intel 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: Intel 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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/* For some Intel based controllers, the default Bluetooth device
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* address 00:03:19:9E:8B:00 can be found. These controllers are
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* fully operational, but have the danger of duplicate addresses
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* and that in turn can cause problems with Bluetooth operation.
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*/
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if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
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BT_ERR("%s: Found Intel 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(btintel_check_bdaddr);
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int btintel_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, 0xfc31, 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: Changing Intel 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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kfree_skb(skb);
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return 0;
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}
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EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
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void btintel_hw_error(struct hci_dev *hdev, u8 code)
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{
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struct sk_buff *skb;
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u8 type = 0x00;
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BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
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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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BT_ERR("%s: Reset after hardware error failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return;
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}
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kfree_skb(skb);
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skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb)) {
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BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
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hdev->name, PTR_ERR(skb));
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return;
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}
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if (skb->len != 13) {
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BT_ERR("%s: Exception info size mismatch", hdev->name);
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kfree_skb(skb);
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return;
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}
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BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
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kfree_skb(skb);
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}
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EXPORT_SYMBOL_GPL(btintel_hw_error);
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void btintel_version_info(struct hci_dev *hdev, struct intel_version *ver)
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{
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const char *variant;
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switch (ver->fw_variant) {
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case 0x06:
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variant = "Bootloader";
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break;
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case 0x23:
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variant = "Firmware";
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break;
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default:
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return;
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}
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BT_INFO("%s: %s revision %u.%u build %u week %u %u", hdev->name,
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variant, ver->fw_revision >> 4, ver->fw_revision & 0x0f,
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ver->fw_build_num, ver->fw_build_ww, 2000 + ver->fw_build_yy);
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}
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EXPORT_SYMBOL_GPL(btintel_version_info);
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int btintel_secure_send(struct hci_dev *hdev, u8 fragment_type, u32 plen,
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const void *param)
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{
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while (plen > 0) {
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struct sk_buff *skb;
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u8 cmd_param[253], fragment_len = (plen > 252) ? 252 : plen;
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cmd_param[0] = fragment_type;
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memcpy(cmd_param + 1, param, fragment_len);
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skb = __hci_cmd_sync(hdev, 0xfc09, fragment_len + 1,
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cmd_param, HCI_INIT_TIMEOUT);
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if (IS_ERR(skb))
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return PTR_ERR(skb);
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kfree_skb(skb);
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plen -= fragment_len;
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param += fragment_len;
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}
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return 0;
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}
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EXPORT_SYMBOL_GPL(btintel_secure_send);
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MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
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MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
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MODULE_VERSION(VERSION);
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MODULE_LICENSE("GPL");
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MODULE_FIRMWARE("intel/ibt-11-5.sfi");
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MODULE_FIRMWARE("intel/ibt-11-5.ddc");
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