1 #ifndef _LINUX_VIRTIO_CONFIG_H 2 #define _LINUX_VIRTIO_CONFIG_H 3 /* Virtio devices use a standardized configuration space to define their 4 * features and pass configuration information, but each implementation can 5 * store and access that space differently. */ 6 #include <linux/types.h> 7 8 /* Status byte for guest to report progress, and synchronize features. */ 9 /* We have seen device and processed generic fields (VIRTIO_CONFIG_F_VIRTIO) */ 10 #define VIRTIO_CONFIG_S_ACKNOWLEDGE 1 11 /* We have found a driver for the device. */ 12 #define VIRTIO_CONFIG_S_DRIVER 2 13 /* Driver has used its parts of the config, and is happy */ 14 #define VIRTIO_CONFIG_S_DRIVER_OK 4 15 /* We've given up on this device. */ 16 #define VIRTIO_CONFIG_S_FAILED 0x80 17 18 /* Do we get callbacks when the ring is completely used, even if we've 19 * suppressed them? */ 20 #define VIRTIO_F_NOTIFY_ON_EMPTY 24 21 22 #endif /* _LINUX_VIRTIO_CONFIG_H */ 23