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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/include/net/bluetooth/hci_drv.h
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * Copyright (C) 2025 Google Corporation

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 */

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#ifndef __HCI_DRV_H

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#define __HCI_DRV_H

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#include <linux/types.h>

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#include <net/bluetooth/bluetooth.h>

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#include <net/bluetooth/hci.h>

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struct hci_drv_cmd_hdr {

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	__le16	opcode;

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	__le16	len;

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} __packed;

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struct hci_drv_ev_hdr {

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	__le16	opcode;

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	__le16	len;

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} __packed;

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#define HCI_DRV_EV_CMD_STATUS	0x0000

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struct hci_drv_ev_cmd_status {

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	__le16	opcode;

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	__u8	status;

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} __packed;

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#define HCI_DRV_EV_CMD_COMPLETE	0x0001

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struct hci_drv_ev_cmd_complete {

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	__le16	opcode;

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	__u8	status;

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	__u8	data[];

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} __packed;

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#define HCI_DRV_STATUS_SUCCESS			0x00

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#define HCI_DRV_STATUS_UNSPECIFIED_ERROR	0x01

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#define HCI_DRV_STATUS_UNKNOWN_COMMAND		0x02

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#define HCI_DRV_STATUS_INVALID_PARAMETERS	0x03

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#define HCI_DRV_MAX_DRIVER_NAME_LENGTH	32

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/* Common commands that make sense on all drivers start from 0x0000 */

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#define HCI_DRV_OP_READ_INFO	0x0000

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#define HCI_DRV_READ_INFO_SIZE	0

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struct hci_drv_rp_read_info {

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	__u8	driver_name[HCI_DRV_MAX_DRIVER_NAME_LENGTH];

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	__le16	num_supported_commands;

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	__le16	supported_commands[];

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} __packed;

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/* Driver specific OGF (Opcode Group Field)

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 * Commands in this group may have different meanings across different drivers.

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 */

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#define HCI_DRV_OGF_DRIVER_SPECIFIC	0x01

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int hci_drv_cmd_status(struct hci_dev *hdev, u16 cmd, u8 status);

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int hci_drv_cmd_complete(struct hci_dev *hdev, u16 cmd, u8 status, void *rp,

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			 size_t rp_len);

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int hci_drv_process_cmd(struct hci_dev *hdev, struct sk_buff *cmd_skb);

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struct hci_drv_handler {

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	int (*func)(struct hci_dev *hdev, void *data, u16 data_len);

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	size_t data_len;

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};

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struct hci_drv {

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	size_t common_handler_count;

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	const struct hci_drv_handler *common_handlers;

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	size_t specific_handler_count;

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	const struct hci_drv_handler *specific_handlers;

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};

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#endif /* __HCI_DRV_H */

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