linux-stable/include/uapi/linux/virtio_bt.h
Igor Skalkin 47c50853bb virtio_bt: Fix alignment in configuration struct
The current version of the configuration structure has unaligned
16-bit fields, but according to the specification [1], access to
the configuration space must be aligned.

Add a second, aligned  version of the configuration structure
and a new feature bit indicating that this version is being used.

[1] https://docs.oasis-open.org/virtio/virtio/v1.1/virtio-v1.1.pdf

Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2022-12-12 14:19:23 -08:00

39 lines
957 B
C

/* SPDX-License-Identifier: BSD-3-Clause */
#ifndef _UAPI_LINUX_VIRTIO_BT_H
#define _UAPI_LINUX_VIRTIO_BT_H
#include <linux/virtio_types.h>
/* Feature bits */
#define VIRTIO_BT_F_VND_HCI 0 /* Indicates vendor command support */
#define VIRTIO_BT_F_MSFT_EXT 1 /* Indicates MSFT vendor support */
#define VIRTIO_BT_F_AOSP_EXT 2 /* Indicates AOSP vendor support */
#define VIRTIO_BT_F_CONFIG_V2 3 /* Use second version configuration */
enum virtio_bt_config_type {
VIRTIO_BT_CONFIG_TYPE_PRIMARY = 0,
VIRTIO_BT_CONFIG_TYPE_AMP = 1,
};
enum virtio_bt_config_vendor {
VIRTIO_BT_CONFIG_VENDOR_NONE = 0,
VIRTIO_BT_CONFIG_VENDOR_ZEPHYR = 1,
VIRTIO_BT_CONFIG_VENDOR_INTEL = 2,
VIRTIO_BT_CONFIG_VENDOR_REALTEK = 3,
};
struct virtio_bt_config {
__u8 type;
__u16 vendor;
__u16 msft_opcode;
} __attribute__((packed));
struct virtio_bt_config_v2 {
__u8 type;
__u8 alignment;
__u16 vendor;
__u16 msft_opcode;
};
#endif /* _UAPI_LINUX_VIRTIO_BT_H */