projects / qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| d5970055 MT |
1 | #ifndef VHOST_H |
| 2 | #define VHOST_H | |
| 3 | ||
| 4 | #include "hw/hw.h" | |
| 5 | #include "hw/virtio.h" | |
| 022c62cb | 6 | #include "exec/memory.h" |
| d5970055 MT |
7 | |
| 8 | /* Generic structures common for any vhost based device. */ | |
| 9 | struct vhost_virtqueue { | |
| 10 | int kick; | |
| 11 | int call; | |
| 12 | void *desc; | |
| 13 | void *avail; | |
| 14 | void *used; | |
| 15 | int num; | |
| 16 | unsigned long long used_phys; | |
| 17 | unsigned used_size; | |
| 18 | void *ring; | |
| 19 | unsigned long long ring_phys; | |
| 20 | unsigned ring_size; | |
| f56a1247 | 21 | EventNotifier masked_notifier; |
| d5970055 MT |
22 | }; |
| 23 | ||
| 24 | typedef unsigned long vhost_log_chunk_t; | |
| 25 | #define VHOST_LOG_PAGE 0x1000 | |
| 26 | #define VHOST_LOG_BITS (8 * sizeof(vhost_log_chunk_t)) | |
| 27 | #define VHOST_LOG_CHUNK (VHOST_LOG_PAGE * VHOST_LOG_BITS) | |
| 28 | ||
| 29 | struct vhost_memory; | |
| 30 | struct vhost_dev { | |
| 04097f7c | 31 | MemoryListener memory_listener; |
| d5970055 MT |
32 | int control; |
| 33 | struct vhost_memory *mem; | |
| 2817b260 AK |
34 | int n_mem_sections; |
| 35 | MemoryRegionSection *mem_sections; | |
| d5970055 MT |
36 | struct vhost_virtqueue *vqs; |
| 37 | int nvqs; | |
| a9f98bb5 JW |
38 | /* the first virtuque which would be used by this vhost dev */ |
| 39 | int vq_index; | |
| d5970055 MT |
40 | unsigned long long features; |
| 41 | unsigned long long acked_features; | |
| 42 | unsigned long long backend_features; | |
| 43 | bool started; | |
| 44 | bool log_enabled; | |
| 45 | vhost_log_chunk_t *log; | |
| 46 | unsigned long long log_size; | |
| 5430a28f | 47 | bool force; |
| d5970055 MT |
48 | }; |
| 49 | ||
| 1241ed94 SH |
50 | int vhost_dev_init(struct vhost_dev *hdev, int devfd, const char *devpath, |
| 51 | bool force); | |
| d5970055 | 52 | void vhost_dev_cleanup(struct vhost_dev *hdev); |
| 5430a28f | 53 | bool vhost_dev_query(struct vhost_dev *hdev, VirtIODevice *vdev); |
| d5970055 MT |
54 | int vhost_dev_start(struct vhost_dev *hdev, VirtIODevice *vdev); |
| 55 | void vhost_dev_stop(struct vhost_dev *hdev, VirtIODevice *vdev); | |
| b0b3db79 MT |
56 | int vhost_dev_enable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); |
| 57 | void vhost_dev_disable_notifiers(struct vhost_dev *hdev, VirtIODevice *vdev); | |
| d5970055 | 58 | |
| f56a1247 MT |
59 | /* Test and clear masked event pending status. |
| 60 | * Should be called after unmask to avoid losing events. | |
| 61 | */ | |
| 62 | bool vhost_virtqueue_pending(struct vhost_dev *hdev, int n); | |
| 63 | ||
| 64 | /* Mask/unmask events from this vq. | |
| 65 | */ | |
| 66 | void vhost_virtqueue_mask(struct vhost_dev *hdev, VirtIODevice *vdev, int n, | |
| 67 | bool mask); | |
| d5970055 | 68 | #endif |