vdev.h

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/* SPDX-License-Identifier: MIT */
/*
 * Author: Andreas Werner <kernel@andy89.org>
 * Date: 2016
 */
#ifndef VDEV_H_
#define VDEV_H_
#include <FreeRTOS.h>
#include <stdint.h>
#include <stdbool.h>
#include <system.h>
#include <semphr.h>
#include <hal.h>
struct vdev;
struct vdev_ops {
        struct vdev *(*vdev_init)(uint32_t index, struct virtio *virtio, uint8_t size, struct vring_config *config);
        int32_t vdev_deinit(struct vdev *vdev);
};
struct vdev_config {
        enum vdev_type id;
        uint32_t notifyid;
        uint32_t features;
        uint32_t configLen;
        void *config;
        uint8_t numOfVrings;
        struct vring_config vrings[0];
};
struct vring_config {
        uint32_t va;
        uint32_t da;
        uint32_t align;
        uint32_t notifyid;
};
struct vdev_generic {
        bool init;
        struct vdev_config config;
        struct virtio *virtio;
        const struct vdev_ops *ops;
#ifdef CONFIG_INSTANCE_NAME
 
        const char *name;
#endif
#ifdef CONFIG_VDEV_THREAD_SAVE
 
        SemaphoreHandle_t lock; 
#endif
};
inline struct vdev *vdev_init(uint32_t index, struct virtio *virtio, uint8_t size, struct vring_config *config) {
        HAL_DEFINE_GLOBAL_ARRAY(vdev);
        struct vdev_generic *gen = HAL_GET_DEV(vdev, index);
        if (gen == NULL) {
                return NULL;
        }
        return gen->ops->vdev_init(index, virtio, size, config);
}
inline int32_t vdev_deinit(struct vdev *vdev) {
        struct vdev_generic *gen = vdev;
        return gen->deinit(vdev);
}
inline int32_t vdev_getID(struct vdev *vdev) {
        struct vdev_generic *gen = vdev;
        return gen->config.id;
}
inline bool vdev_hasFeatures(struct vdev *vdev, uint32_t feature) {
        struct vdev_generic *gen = vdev;
        return (vdev.config->features & BIT(feature)) != 0;
}
#endif