1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2022 Intel Corporation 3 */ 4 5 #ifndef _VDPA_BLK_COMPACT_H_ 6 #define _VDPA_BLK_COMPACT_H_ 7 8 #include <rte_vhost.h> 9 10 /* Feature bits */ 11 #define VIRTIO_BLK_F_SIZE_MAX 1 /* Indicates maximum segment size */ 12 #define VIRTIO_BLK_F_SEG_MAX 2 /* Indicates maximum # of segments */ 13 #define VIRTIO_BLK_F_GEOMETRY 4 /* Legacy geometry available */ 14 #define VIRTIO_BLK_F_BLK_SIZE 6 /* Block size of disk is available */ 15 #define VIRTIO_BLK_F_TOPOLOGY 10 /* Topology information is available */ 16 #define VIRTIO_BLK_F_MQ 12 /* support more than one vq */ 17 18 /* Legacy feature bits */ 19 #define VIRTIO_BLK_F_BARRIER 0 /* Does host support barriers? */ 20 #define VIRTIO_BLK_F_SCSI 7 /* Supports scsi command passthru */ 21 #define VIRTIO_BLK_F_CONFIG_WCE 11 /* Writeback mode available in config */ 22 23 #define VHOST_BLK_FEATURES_BASE ((1ULL << VHOST_F_LOG_ALL) | \ 24 (1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \ 25 (1ULL << VIRTIO_RING_F_INDIRECT_DESC) | \ 26 (1ULL << VIRTIO_RING_F_EVENT_IDX) | \ 27 (1ULL << VHOST_USER_F_PROTOCOL_FEATURES) | \ 28 (1ULL << VIRTIO_F_VERSION_1)) 29 30 #define VHOST_BLK_DISABLED_FEATURES_BASE ((1ULL << VIRTIO_F_NOTIFY_ON_EMPTY) | \ 31 (1ULL << VIRTIO_RING_F_EVENT_IDX)) 32 33 #define VHOST_BLK_FEATURES (VHOST_BLK_FEATURES_BASE | \ 34 (1ULL << VIRTIO_BLK_F_SIZE_MAX) | (1ULL << VIRTIO_BLK_F_SEG_MAX) | \ 35 (1ULL << VIRTIO_BLK_F_GEOMETRY) | (1ULL << VIRTIO_BLK_F_BLK_SIZE) | \ 36 (1ULL << VIRTIO_BLK_F_TOPOLOGY) | (1ULL << VIRTIO_BLK_F_BARRIER) | \ 37 (1ULL << VIRTIO_BLK_F_SCSI) | (1ULL << VIRTIO_BLK_F_CONFIG_WCE) | \ 38 (1ULL << VIRTIO_BLK_F_MQ)) 39 40 /* Not supported features */ 41 #define VHOST_BLK_DISABLED_FEATURES (VHOST_BLK_DISABLED_FEATURES_BASE | \ 42 (1ULL << VIRTIO_BLK_F_GEOMETRY) | (1ULL << VIRTIO_BLK_F_BARRIER) | \ 43 (1ULL << VIRTIO_BLK_F_SCSI) | (1ULL << VIRTIO_BLK_F_CONFIG_WCE)) 44 45 /* Vhost-blk support protocol features */ 46 #define VHOST_BLK_PROTOCOL_FEATURES \ 47 ((1ULL << VHOST_USER_PROTOCOL_F_LOG_SHMFD) | \ 48 (1ULL << VHOST_USER_PROTOCOL_F_CONFIG)) 49 50 #endif /* _VDPA_BLK_COMPACT_H_ */ 51