hci_lockstep.h

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/*
 * Copyright (c) 2026 Silicon Laboratories Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef ZEPHYR_INCLUDE_DRIVERS_BLUETOOTH_HCI_LOCKSTEP_H_
#define ZEPHYR_INCLUDE_DRIVERS_BLUETOOTH_HCI_LOCKSTEP_H_
 
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
 
#include <zephyr/bluetooth/hci_pkt.h>
#include <zephyr/device.h>
#include <zephyr/kernel.h>
#include <zephyr/net_buf.h>
 
#ifdef __cplusplus
extern "C" {
#endif


typedef int (*bt_hci_lockstep_send_t)(const struct device *dev, const uint8_t *pkt, size_t len);

struct bt_hci_lockstep {
        const struct device *dev;
        bt_hci_lockstep_send_t send;
        struct k_sem changed;
        struct k_spinlock lock;
        struct net_buf_simple *rsp;
        uint16_t opcode;
        uint8_t state;
        uint8_t status;

        k_timeout_t timeout;
};

void bt_hci_lockstep_init(struct bt_hci_lockstep *ls, const struct device *dev,
                          bt_hci_lockstep_send_t send);

bool bt_hci_lockstep_feed(struct bt_hci_lockstep *ls, const uint8_t *pkt, size_t len);

int bt_hci_lockstep_cmd_send_sync(struct bt_hci_lockstep *ls, uint16_t opcode,
                                  struct net_buf_simple *cmd, struct net_buf_simple *rsp);

 
#ifdef __cplusplus
}
#endif
 
#endif /* ZEPHYR_INCLUDE_DRIVERS_BLUETOOTH_HCI_LOCKSTEP_H_ */