ceph/src/spdk/dpdk/lib/librte_vhost/iotlb.h

   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_ */