New upstream version 18.05

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

diff --git a/lib/librte_vhost/rte_vdpa.h b/lib/librte_vhost/rte_vdpa.h
new file mode 100644 (file)
index 0000000..90465ca
--- /dev/null
+++ b/lib/librte_vhost/rte_vdpa.h
@@ -0,0 +1,87 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef _RTE_VDPA_H_
+#define _RTE_VDPA_H_
+
+/**
+ * @file
+ *
+ * Device specific vhost lib
+ */
+
+#include <rte_pci.h>
+#include "rte_vhost.h"
+
+#define MAX_VDPA_NAME_LEN 128
+
+enum vdpa_addr_type {
+       PCI_ADDR,
+       VDPA_ADDR_MAX
+};
+
+struct rte_vdpa_dev_addr {
+       enum vdpa_addr_type type;
+       union {
+               uint8_t __dummy[64];
+               struct rte_pci_addr pci_addr;
+       };
+};
+
+struct rte_vdpa_dev_ops {
+       /* Get capabilities of this device */
+       int (*get_queue_num)(int did, uint32_t *queue_num);
+       int (*get_features)(int did, uint64_t *features);
+       int (*get_protocol_features)(int did, uint64_t *protocol_features);
+
+       /* Driver configure/close the device */
+       int (*dev_conf)(int vid);
+       int (*dev_close)(int vid);
+
+       /* Enable/disable this vring */
+       int (*set_vring_state)(int vid, int vring, int state);
+
+       /* Set features when changed */
+       int (*set_features)(int vid);
+
+       /* Destination operations when migration done */
+       int (*migration_done)(int vid);
+
+       /* Get the vfio group fd */
+       int (*get_vfio_group_fd)(int vid);
+
+       /* Get the vfio device fd */
+       int (*get_vfio_device_fd)(int vid);
+
+       /* Get the notify area info of the queue */
+       int (*get_notify_area)(int vid, int qid,
+                       uint64_t *offset, uint64_t *size);
+
+       /* Reserved for future extension */
+       void *reserved[5];
+};
+
+struct rte_vdpa_device {
+       struct rte_vdpa_dev_addr addr;
+       struct rte_vdpa_dev_ops *ops;
+} __rte_cache_aligned;
+
+/* Register a vdpa device, return did if successful, -1 on failure */
+int __rte_experimental
+rte_vdpa_register_device(struct rte_vdpa_dev_addr *addr,
+               struct rte_vdpa_dev_ops *ops);
+
+/* Unregister a vdpa device, return -1 on failure */
+int __rte_experimental
+rte_vdpa_unregister_device(int did);
+
+/* Find did of a vdpa device, return -1 on failure */
+int __rte_experimental
+rte_vdpa_find_device_id(struct rte_vdpa_dev_addr *addr);
+
+/* Find a vdpa device based on did */
+struct rte_vdpa_device * __rte_experimental
+rte_vdpa_get_device(int did);
+
+#endif /* _RTE_VDPA_H_ */