74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
/*
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* Copyright (C) 2018-2022 Intel Corporation.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*
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*/
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/* This file provides common routines to interface with VBS-K kernel modules */
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#ifndef _VIRTIO_KERNEL_H_
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#define _VIRTIO_KERNEL_H_
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#include "vbs_common_if.h" /* data format between VBS-U & VBS-K */
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/**
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* @brief APIs for virtio backend in kernel module
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*
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* @addtogroup acrn_virtio
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* @{
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*/
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enum VBS_K_STATUS {
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VIRTIO_DEV_INITIAL = 1, /* initial status */
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VIRTIO_DEV_PRE_INIT, /* detected thru cmdline option */
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VIRTIO_DEV_INIT_FAILED, /* init failed */
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VIRTIO_DEV_INIT_SUCCESS, /* init success */
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VIRTIO_DEV_START_FAILED, /* start failed */
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VIRTIO_DEV_STARTED, /* start success */
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};
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/* Return codes */
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#define VIRTIO_SUCCESS 0
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#define VIRTIO_ERROR_REENTER 1
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#define VIRTIO_ERROR_FD_OPEN_FAILED 2
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#define VIRTIO_ERROR_MEM_ALLOC_FAILED 3
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#define VIRTIO_ERROR_START 4
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#define VIRTIO_ERROR_GENERAL 5
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/* VBS-K common ops */
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/**
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* @brief Virtio kernel module reset.
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*
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* @param fd File descriptor representing virtio backend in kernel module.
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*
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* @return 0 on OK and non-zero on error.
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*/
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int vbs_kernel_reset(int fd);
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/**
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* @brief Virtio kernel module start.
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*
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* @param fd File descriptor representing virtio backend in kernel module.
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* @param dev Pointer to struct vbs_dev_info.
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* @param vqs Pointer to struct vbs_vqs_info.
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*
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* @return 0 on OK and non-zero on error.
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*/
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int vbs_kernel_start(int fd, struct vbs_dev_info *dev,
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struct vbs_vqs_info *vqs);
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/**
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* @brief Virtio kernel module stop.
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*
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* @param fd File descriptor representing virtio backend in kernel module.
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*
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* @return 0 on OK and non-zero on error.
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*/
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int vbs_kernel_stop(int fd);
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/**
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* @}
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*/
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#endif
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