973bb97e5a
The handling of hardware error has support for providing a vendor specific callback to deal with the error. Move the Intel specific function out of the USB driver into the generic module so that it can also be utilized by the UART driver. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
129 lines
3.4 KiB
C
129 lines
3.4 KiB
C
/*
|
|
*
|
|
* Bluetooth support for Intel devices
|
|
*
|
|
* Copyright (C) 2015 Intel Corporation
|
|
*
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
|
|
#include <net/bluetooth/bluetooth.h>
|
|
#include <net/bluetooth/hci_core.h>
|
|
|
|
#include "btintel.h"
|
|
|
|
#define VERSION "0.1"
|
|
|
|
#define BDADDR_INTEL (&(bdaddr_t) {{0x00, 0x8b, 0x9e, 0x19, 0x03, 0x00}})
|
|
|
|
int btintel_check_bdaddr(struct hci_dev *hdev)
|
|
{
|
|
struct hci_rp_read_bd_addr *bda;
|
|
struct sk_buff *skb;
|
|
|
|
skb = __hci_cmd_sync(hdev, HCI_OP_READ_BD_ADDR, 0, NULL,
|
|
HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb)) {
|
|
int err = PTR_ERR(skb);
|
|
BT_ERR("%s: Reading Intel device address failed (%d)",
|
|
hdev->name, err);
|
|
return err;
|
|
}
|
|
|
|
if (skb->len != sizeof(*bda)) {
|
|
BT_ERR("%s: Intel device address length mismatch", hdev->name);
|
|
kfree_skb(skb);
|
|
return -EIO;
|
|
}
|
|
|
|
bda = (struct hci_rp_read_bd_addr *)skb->data;
|
|
|
|
/* For some Intel based controllers, the default Bluetooth device
|
|
* address 00:03:19:9E:8B:00 can be found. These controllers are
|
|
* fully operational, but have the danger of duplicate addresses
|
|
* and that in turn can cause problems with Bluetooth operation.
|
|
*/
|
|
if (!bacmp(&bda->bdaddr, BDADDR_INTEL)) {
|
|
BT_ERR("%s: Found Intel default device address (%pMR)",
|
|
hdev->name, &bda->bdaddr);
|
|
set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
|
|
}
|
|
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btintel_check_bdaddr);
|
|
|
|
int btintel_set_bdaddr(struct hci_dev *hdev, const bdaddr_t *bdaddr)
|
|
{
|
|
struct sk_buff *skb;
|
|
int err;
|
|
|
|
skb = __hci_cmd_sync(hdev, 0xfc31, 6, bdaddr, HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb)) {
|
|
err = PTR_ERR(skb);
|
|
BT_ERR("%s: Changing Intel device address failed (%d)",
|
|
hdev->name, err);
|
|
return err;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(btintel_set_bdaddr);
|
|
|
|
void btintel_hw_error(struct hci_dev *hdev, u8 code)
|
|
{
|
|
struct sk_buff *skb;
|
|
u8 type = 0x00;
|
|
|
|
BT_ERR("%s: Hardware error 0x%2.2x", hdev->name, code);
|
|
|
|
skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb)) {
|
|
BT_ERR("%s: Reset after hardware error failed (%ld)",
|
|
hdev->name, PTR_ERR(skb));
|
|
return;
|
|
}
|
|
kfree_skb(skb);
|
|
|
|
skb = __hci_cmd_sync(hdev, 0xfc22, 1, &type, HCI_INIT_TIMEOUT);
|
|
if (IS_ERR(skb)) {
|
|
BT_ERR("%s: Retrieving Intel exception info failed (%ld)",
|
|
hdev->name, PTR_ERR(skb));
|
|
return;
|
|
}
|
|
|
|
if (skb->len != 13) {
|
|
BT_ERR("%s: Exception info size mismatch", hdev->name);
|
|
kfree_skb(skb);
|
|
return;
|
|
}
|
|
|
|
BT_ERR("%s: Exception info %s", hdev->name, (char *)(skb->data + 1));
|
|
|
|
kfree_skb(skb);
|
|
}
|
|
EXPORT_SYMBOL_GPL(btintel_hw_error);
|
|
|
|
MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
|
|
MODULE_DESCRIPTION("Bluetooth support for Intel devices ver " VERSION);
|
|
MODULE_VERSION(VERSION);
|
|
MODULE_LICENSE("GPL");
|