lib/librte_vhost/iotlb.h

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright (c) 2017 Red Hat, Inc.
   3  */
   4
   5 #ifndef _VHOST_IOTLB_H_
   6 #define _VHOST_IOTLB_H_
   7
   8 #include <stdbool.h>
   9
  10 #include "vhost.h"
  11
  12 static __rte_always_inline void
  13 vhost_user_iotlb_rd_lock(struct vhost_virtqueue *vq)
  14 {
  15         rte_rwlock_read_lock(&vq->iotlb_lock);
  16 }
  17
  18 static __rte_always_inline void
  19 vhost_user_iotlb_rd_unlock(struct vhost_virtqueue *vq)
  20 {
  21         rte_rwlock_read_unlock(&vq->iotlb_lock);
  22 }
  23
  24 static __rte_always_inline void
  25 vhost_user_iotlb_wr_lock(struct vhost_virtqueue *vq)
  26 {
  27         rte_rwlock_write_lock(&vq->iotlb_lock);
  28 }
  29
  30 static __rte_always_inline void
  31 vhost_user_iotlb_wr_unlock(struct vhost_virtqueue *vq)
  32 {
  33         rte_rwlock_write_unlock(&vq->iotlb_lock);
  34 }
  35
  36 void vhost_user_iotlb_cache_insert(struct vhost_virtqueue *vq, uint64_t iova,
  37                                         uint64_t uaddr, uint64_t size,
  38                                         uint8_t perm);
  39 void vhost_user_iotlb_cache_remove(struct vhost_virtqueue *vq,
  40                                         uint64_t iova, uint64_t size);
  41 uint64_t vhost_user_iotlb_cache_find(struct vhost_virtqueue *vq, uint64_t iova,
  42                                         uint64_t *size, uint8_t perm);
  43 bool vhost_user_iotlb_pending_miss(struct vhost_virtqueue *vq, uint64_t iova,
  44                                                 uint8_t perm);
  45 void vhost_user_iotlb_pending_insert(struct vhost_virtqueue *vq, uint64_t iova,
  46                                                 uint8_t perm);
  47 void vhost_user_iotlb_pending_remove(struct vhost_virtqueue *vq, uint64_t iova,
  48                                                 uint64_t size, uint8_t perm);
  49 void vhost_user_iotlb_flush_all(struct vhost_virtqueue *vq);
  50 int vhost_user_iotlb_init(struct virtio_net *dev, int vq_index);
  51
  52 #endif /* _VHOST_IOTLB_H_ */