hci_drv.h

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (C) 2025 Google Corporation
 4 */
 5
 6#ifndef __HCI_DRV_H
 7#define __HCI_DRV_H
 8
 9#include <linux/types.h>
10
11#include <net/bluetooth/bluetooth.h>
12#include <net/bluetooth/hci.h>
13
14struct hci_drv_cmd_hdr {
15	__le16	opcode;
16	__le16	len;
17} __packed;
18
19struct hci_drv_ev_hdr {
20	__le16	opcode;
21	__le16	len;
22} __packed;
23
24#define HCI_DRV_EV_CMD_STATUS	0x0000
25struct hci_drv_ev_cmd_status {
26	__le16	opcode;
27	__u8	status;
28} __packed;
29
30#define HCI_DRV_EV_CMD_COMPLETE	0x0001
31struct hci_drv_ev_cmd_complete {
32	__le16	opcode;
33	__u8	status;
34	__u8	data[];
35} __packed;
36
37#define HCI_DRV_STATUS_SUCCESS			0x00
38#define HCI_DRV_STATUS_UNSPECIFIED_ERROR	0x01
39#define HCI_DRV_STATUS_UNKNOWN_COMMAND		0x02
40#define HCI_DRV_STATUS_INVALID_PARAMETERS	0x03
41
42#define HCI_DRV_MAX_DRIVER_NAME_LENGTH	32
43
44/* Common commands that make sense on all drivers start from 0x0000 */
45#define HCI_DRV_OP_READ_INFO	0x0000
46#define HCI_DRV_READ_INFO_SIZE	0
47struct hci_drv_rp_read_info {
48	__u8	driver_name[HCI_DRV_MAX_DRIVER_NAME_LENGTH];
49	__le16	num_supported_commands;
50	__le16	supported_commands[] __counted_by_le(num_supported_commands);
51} __packed;
52
53/* Driver specific OGF (Opcode Group Field)
54 * Commands in this group may have different meanings across different drivers.
55 */
56#define HCI_DRV_OGF_DRIVER_SPECIFIC	0x01
57
58int hci_drv_cmd_status(struct hci_dev *hdev, u16 cmd, u8 status);
59int hci_drv_cmd_complete(struct hci_dev *hdev, u16 cmd, u8 status, void *rp,
60			 size_t rp_len);
61int hci_drv_process_cmd(struct hci_dev *hdev, struct sk_buff *cmd_skb);
62
63struct hci_drv_handler {
64	int (*func)(struct hci_dev *hdev, void *data, u16 data_len);
65	size_t data_len;
66};
67
68struct hci_drv {
69	size_t common_handler_count;
70	const struct hci_drv_handler *common_handlers;
71
72	size_t specific_handler_count;
73	const struct hci_drv_handler *specific_handlers;
74};
75
76#endif /* __HCI_DRV_H */