1 /*- 2 * BSD LICENSE 3 * 4 * Copyright (c) 2017 Red Hat, Inc. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 10 * * Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * * Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * * Neither the name of Intel Corporation nor the names of its 17 * contributors may be used to endorse or promote products derived 18 * from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 #ifndef _VHOST_IOTLB_H_ 33 #define _VHOST_IOTLB_H_ 34 35 #include <stdbool.h> 36 37 #include "vhost.h" 38 39 static __rte_always_inline void 40 vhost_user_iotlb_rd_lock(struct vhost_virtqueue *vq) 41 { 42 rte_rwlock_read_lock(&vq->iotlb_lock); 43 } 44 45 static __rte_always_inline void 46 vhost_user_iotlb_rd_unlock(struct vhost_virtqueue *vq) 47 { 48 rte_rwlock_read_unlock(&vq->iotlb_lock); 49 } 50 51 static __rte_always_inline void 52 vhost_user_iotlb_wr_lock(struct vhost_virtqueue *vq) 53 { 54 rte_rwlock_write_lock(&vq->iotlb_lock); 55 } 56 57 static __rte_always_inline void 58 vhost_user_iotlb_wr_unlock(struct vhost_virtqueue *vq) 59 { 60 rte_rwlock_write_unlock(&vq->iotlb_lock); 61 } 62 63 void vhost_user_iotlb_cache_insert(struct vhost_virtqueue *vq, uint64_t iova, 64 uint64_t uaddr, uint64_t size, 65 uint8_t perm); 66 void vhost_user_iotlb_cache_remove(struct vhost_virtqueue *vq, 67 uint64_t iova, uint64_t size); 68 uint64_t vhost_user_iotlb_cache_find(struct vhost_virtqueue *vq, uint64_t iova, 69 uint64_t *size, uint8_t perm); 70 bool vhost_user_iotlb_pending_miss(struct vhost_virtqueue *vq, uint64_t iova, 71 uint8_t perm); 72 void vhost_user_iotlb_pending_insert(struct vhost_virtqueue *vq, uint64_t iova, 73 uint8_t perm); 74 void vhost_user_iotlb_pending_remove(struct vhost_virtqueue *vq, uint64_t iova, 75 uint64_t size, uint8_t perm); 76 void vhost_user_iotlb_flush_all(struct vhost_virtqueue *vq); 77 int vhost_user_iotlb_init(struct virtio_net *dev, int vq_index); 78 79 #endif /* _VHOST_IOTLB_H_ */ 80