Archipelago » qemu

#ifndef VHOST_H

#define VHOST_H

#include "hw/hw.h"

#include "hw/virtio.h"

/* Generic structures common for any vhost based device. */

struct vhost_virtqueue {

    int kick;

    int call;

    void *desc;

    void *avail;

    void *used;

    int num;

    unsigned long long used_phys;

    unsigned used_size;

    void *ring;

    unsigned long long ring_phys;

    unsigned ring_size;

};

typedef unsigned long vhost_log_chunk_t;

#define VHOST_LOG_PAGE 0x1000

#define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t))

#define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS)

struct vhost_memory;

struct vhost_dev {

    CPUPhysMemoryClient client;

    int control;

    struct vhost_memory *mem;

    struct vhost_virtqueue *vqs;

    int nvqs;

    unsigned long long features;

    unsigned long long acked_features;

    unsigned long long backend_features;

    bool started;

    bool log_enabled;

    vhost_log_chunk_t *log;

    unsigned long long log_size;

};

int vhost_dev_init(struct vhost_dev *hdev, int devfd);

void vhost_dev_cleanup(struct vhost_dev *hdev);

int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev);

void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev);

#endif