| #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; |
| bool force; |
| }; |
| |
| int vhost_dev_init(struct vhost_dev *hdev, int devfd, bool force); |
| void vhost_dev_cleanup(struct vhost_dev *hdev); |
| bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev); |
| int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev); |
| void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev); |
| |
| #endif |
