New upstream version 17.11-rc3

[deb_dpdk.git] / lib / librte_vhost / iotlb.h

diff --git a/lib/librte_vhost/iotlb.h b/lib/librte_vhost/iotlb.h
new file mode 100644 (file)
index 0000000..f1a050e
--- /dev/null
+++ b/lib/librte_vhost/iotlb.h
@@ -0,0 +1,76 @@
+/*-
+ *   BSD LICENSE
+ *
+ *   Copyright (c) 2017 Red Hat, Inc.
+ *
+ *   Redistribution and use in source and binary forms, with or without
+ *   modification, are permitted provided that the following conditions
+ *   are met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in
+ *       the documentation and/or other materials provided with the
+ *       distribution.
+ *     * Neither the name of Intel Corporation nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+#ifndef _VHOST_IOTLB_H_
+#define _VHOST_IOTLB_H_
+
+#include <stdbool.h>
+
+#include "vhost.h"
+
+static __rte_always_inline void
+vhost_user_iotlb_rd_lock(struct vhost_virtqueue *vq)
+{
+       rte_rwlock_read_lock(&vq->iotlb_lock);
+}
+
+static __rte_always_inline void
+vhost_user_iotlb_rd_unlock(struct vhost_virtqueue *vq)
+{
+       rte_rwlock_read_unlock(&vq->iotlb_lock);
+}
+
+static __rte_always_inline void
+vhost_user_iotlb_wr_lock(struct vhost_virtqueue *vq)
+{
+       rte_rwlock_write_lock(&vq->iotlb_lock);
+}
+
+static __rte_always_inline void
+vhost_user_iotlb_wr_unlock(struct vhost_virtqueue *vq)
+{
+       rte_rwlock_write_unlock(&vq->iotlb_lock);
+}
+
+void vhost_user_iotlb_cache_insert(struct vhost_virtqueue *vq, uint64_t iova,
+                                       uint64_t uaddr, uint64_t size,
+                                       uint8_t perm);
+void vhost_user_iotlb_cache_remove(struct vhost_virtqueue *vq,
+                                       uint64_t iova, uint64_t size);
+uint64_t vhost_user_iotlb_cache_find(struct vhost_virtqueue *vq, uint64_t iova,
+                                       uint64_t *size, uint8_t perm);
+bool vhost_user_iotlb_pending_miss(struct vhost_virtqueue *vq, uint64_t iova,
+                                               uint8_t perm);
+void vhost_user_iotlb_pending_insert(struct vhost_virtqueue *vq, uint64_t iova,
+                                               uint8_t perm);
+int vhost_user_iotlb_init(struct virtio_net *dev, int vq_index);
+
+#endif /* _VHOST_IOTLB_H_ */