providers/vmw_pvrdma/pvrdma.h - linux-rdma/rdma-core - Git at Google

 /*
  * Copyright (c) 2012-2016 VMware, Inc.  All rights reserved.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of EITHER the GNU General Public License
  * version 2 as published by the Free Software Foundation or the BSD
  * 2-Clause License. This program is distributed in the hope that it
  * will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  * See the GNU General Public License version 2 for more details at
  * http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program available in the file COPYING in the main
  * directory of this source tree.
  *
  * The BSD 2-Clause License
  *
  *     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.
  *
  * 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 HOLDER 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 __PVRDMA_H__
 #define __PVRDMA_H__

 #include <config.h>
 #include <endian.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <pthread.h>
 #include <unistd.h>
 #include <sys/mman.h>
 #include <infiniband/driver.h>
 #include <ccan/minmax.h>
 #include <util/compiler.h>

 #include "pvrdma-abi.h"
 #include "pvrdma_ring.h"

 #define PFX "pvrdma: "

 enum {
 	PVRDMA_OPCODE_NOP			= 0x00,
 	PVRDMA_OPCODE_SEND_INVAL		= 0x01,
 	PVRDMA_OPCODE_RDMA_WRITE		= 0x08,
 	PVRDMA_OPCODE_RDMA_WRITE_IMM		= 0x09,
 	PVRDMA_OPCODE_SEND			= 0x0a,
 	PVRDMA_OPCODE_SEND_IMM			= 0x0b,
 	PVRDMA_OPCODE_LSO			= 0x0e,
 	PVRDMA_OPCODE_RDMA_READ			= 0x10,
 	PVRDMA_OPCODE_ATOMIC_CS			= 0x11,
 	PVRDMA_OPCODE_ATOMIC_FA			= 0x12,
 	PVRDMA_OPCODE_ATOMIC_MASK_CS		= 0x14,
 	PVRDMA_OPCODE_ATOMIC_MASK_FA		= 0x15,
 	PVRDMA_OPCODE_BIND_MW			= 0x18,
 	PVRDMA_OPCODE_FMR			= 0x19,
 	PVRDMA_OPCODE_LOCAL_INVAL		= 0x1b,
 	PVRDMA_OPCODE_CONFIG_CMD		= 0x1f,

 	PVRDMA_RECV_OPCODE_RDMA_WRITE_IMM	= 0x00,
 	PVRDMA_RECV_OPCODE_SEND			= 0x01,
 	PVRDMA_RECV_OPCODE_SEND_IMM		= 0x02,
 	PVRDMA_RECV_OPCODE_SEND_INVAL		= 0x03,

 	PVRDMA_CQE_OPCODE_ERROR			= 0x1e,
 	PVRDMA_CQE_OPCODE_RESIZE		= 0x16,
 };

 enum {
 	PVRDMA_WQE_CTRL_FENCE			= 1 << 6,
 	PVRDMA_WQE_CTRL_CQ_UPDATE		= 3 << 2,
 	PVRDMA_WQE_CTRL_SOLICIT			= 1 << 1,
 };

 struct pvrdma_device {
 	struct verbs_device		ibv_dev;
 	int				page_size;
 	int				abi_version;
 };

 struct pvrdma_context {
 	struct verbs_context		ibv_ctx;
 	void				*uar;
 	pthread_spinlock_t		uar_lock;
 	int				max_qp_wr;
 	int				max_sge;
 	int				max_cqe;
 	struct pvrdma_qp		**qp_tbl;
 };

 struct pvrdma_buf {
 	void				*buf;
 	size_t				length;
 };

 struct pvrdma_pd {
 	struct ibv_pd			ibv_pd;
 	uint32_t			pdn;
 };

 struct pvrdma_cq {
 	struct ibv_cq			ibv_cq;
 	struct pvrdma_buf		buf;
 	struct pvrdma_buf		resize_buf;
 	pthread_spinlock_t		lock;
 	struct pvrdma_ring_state	*ring_state;
 	uint32_t			cqe_cnt;
 	uint32_t			offset;
 	uint32_t			cqn;
 };

 struct pvrdma_srq {
 	struct ibv_srq			ibv_srq;
 	struct pvrdma_buf		buf;
 	pthread_spinlock_t		lock;
 	uint64_t			*wrid;
 	uint32_t			srqn;
 	int				wqe_cnt;
 	int				wqe_size;
 	int				max_gs;
 	int				wqe_shift;
 	struct pvrdma_ring_state	*ring_state;
 	uint16_t			counter;
 	int				offset;
 };

 struct pvrdma_wq {
 	uint64_t			*wrid;
 	pthread_spinlock_t		lock;
 	int				wqe_cnt;
 	int				wqe_size;
 	struct pvrdma_ring		*ring_state;
 	int				max_gs;
 	int				wqe_shift;
 	int				offset;
 };

 struct pvrdma_qp {
 	struct ibv_qp			ibv_qp;
 	struct pvrdma_buf		rbuf;
 	struct pvrdma_buf		sbuf;
 	int				max_inline_data;
 	int				buf_size;
 	__be32				sq_signal_bits;
 	int				sq_spare_wqes;
 	struct pvrdma_wq		sq;
 	struct pvrdma_wq		rq;
 	int				is_srq;
 	uint32_t			qp_handle;
 };

 struct pvrdma_ah {
 	struct ibv_ah			ibv_ah;
 	struct pvrdma_av		av;
 };

 static inline unsigned long align(unsigned long val, unsigned long align)
 {
 	return (val + align - 1) & ~(align - 1);
 }

 static inline int align_next_power2(int size)
 {
 	int  val = 1;

 	while (val < size)
 		val <<= 1;

 	return val;
 }

 static inline struct pvrdma_device *to_vdev(struct ibv_device *ibdev)
 {
 	return container_of(ibdev, struct pvrdma_device, ibv_dev.device);
 }

 static inline struct pvrdma_context *to_vctx(struct ibv_context *ibctx)
 {
 	return container_of(ibctx, struct pvrdma_context, ibv_ctx.context);
 }

 static inline struct pvrdma_pd *to_vpd(struct ibv_pd *ibpd)
 {
 	return container_of(ibpd, struct pvrdma_pd, ibv_pd);
 }

 static inline struct pvrdma_cq *to_vcq(struct ibv_cq *ibcq)
 {
 	return container_of(ibcq, struct pvrdma_cq, ibv_cq);
 }

 static inline struct pvrdma_srq *to_vsrq(struct ibv_srq *ibsrq)
 {
 	return container_of(ibsrq, struct pvrdma_srq, ibv_srq);
 }

 static inline struct pvrdma_qp *to_vqp(struct ibv_qp *ibqp)
 {
 	return container_of(ibqp, struct pvrdma_qp, ibv_qp);
 }

 static inline struct pvrdma_ah *to_vah(struct ibv_ah *ibah)
 {
 	return container_of(ibah, struct pvrdma_ah, ibv_ah);
 }

 static inline void pvrdma_write_uar_qp(void *uar, unsigned value)
 {
 	*(__le32 *)(uar + PVRDMA_UAR_QP_OFFSET) = htole32(value);
 }

 static inline void pvrdma_write_uar_cq(void *uar, unsigned value)
 {
 	*(__le32 *)(uar + PVRDMA_UAR_CQ_OFFSET) = htole32(value);
 }

 static inline void pvrdma_write_uar_srq(void *uar, unsigned int value)
 {
 	*(__le32 *)(uar + PVRDMA_UAR_SRQ_OFFSET) = htole32(value);
 }

 static inline int ibv_send_flags_to_pvrdma(int flags)
 {
 	return flags;
 }

 static inline enum pvrdma_wr_opcode ibv_wr_opcode_to_pvrdma(
 						enum ibv_wr_opcode op)
 {
 	return (enum pvrdma_wr_opcode)op;
 }

 static inline enum ibv_wc_status pvrdma_wc_status_to_ibv(
 					enum pvrdma_wc_status status)
 {
 	return (enum ibv_wc_status)status;
 }

 static inline enum ibv_wc_opcode pvrdma_wc_opcode_to_ibv(
 					enum pvrdma_wc_opcode op)
 {
 	return (enum ibv_wc_opcode)op;
 }

 static inline int pvrdma_wc_flags_to_ibv(int flags)
 {
 	return flags;
 }

 int pvrdma_alloc_buf(struct pvrdma_buf *buf, size_t size, int page_size);
 void pvrdma_free_buf(struct pvrdma_buf *buf);

 int pvrdma_query_device(struct ibv_context *context,
 			const struct ibv_query_device_ex_input *input,
 			struct ibv_device_attr_ex *attr, size_t attr_size);
 int pvrdma_query_port(struct ibv_context *context, uint8_t port,
 		      struct ibv_port_attr *attr);

 struct ibv_pd *pvrdma_alloc_pd(struct ibv_context *context);
 int pvrdma_free_pd(struct ibv_pd *pd);

 struct ibv_mr *pvrdma_reg_mr(struct ibv_pd *pd, void *addr, size_t length,
 			     uint64_t hca_va, int access);
 int pvrdma_dereg_mr(struct verbs_mr *mr);

 struct ibv_cq *pvrdma_create_cq(struct ibv_context *context, int cqe,
 				struct ibv_comp_channel *channel,
 				int comp_vector);
 int pvrdma_alloc_cq_buf(struct pvrdma_device *dev, struct pvrdma_cq *cq,
 			struct pvrdma_buf *buf, int nent);
 int pvrdma_destroy_cq(struct ibv_cq *cq);
 int pvrdma_req_notify_cq(struct ibv_cq *cq, int solicited);
 int pvrdma_poll_cq(struct ibv_cq *cq, int ne, struct ibv_wc *wc);
 void pvrdma_cq_event(struct ibv_cq *cq);
 void pvrdma_cq_clean_int(struct pvrdma_cq *cq, uint32_t qp_handle);
 void pvrdma_cq_clean(struct pvrdma_cq *cq, uint32_t qp_handle);
 int pvrdma_get_outstanding_cqes(struct pvrdma_cq *cq);
 void pvrdma_cq_resize_copy_cqes(struct pvrdma_cq *cq, void *buf,
 				int new_cqe);

 struct ibv_qp *pvrdma_create_qp(struct ibv_pd *pd,
 				struct ibv_qp_init_attr *attr);
 int pvrdma_query_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
 		    int attr_mask, struct ibv_qp_init_attr *init_attr);
 int pvrdma_modify_qp(struct ibv_qp *qp, struct ibv_qp_attr *attr,
 		     int attr_mask);
 int pvrdma_destroy_qp(struct ibv_qp *qp);
 void pvrdma_init_qp_indices(struct pvrdma_qp *qp);
 void pvrdma_qp_init_sq_ownership(struct pvrdma_qp *qp);
 int pvrdma_post_send(struct ibv_qp *ibqp, struct ibv_send_wr *wr,
 		     struct ibv_send_wr **bad_wr);
 int pvrdma_post_recv(struct ibv_qp *ibqp, struct ibv_recv_wr *wr,
 		     struct ibv_recv_wr **bad_wr);
 void pvrdma_calc_sq_wqe_size(struct ibv_qp_cap *cap, enum ibv_qp_type type,
 			     struct pvrdma_qp *qp);
 int pvrdma_alloc_qp_buf(struct pvrdma_device *dev, struct ibv_qp_cap *cap,
 			enum ibv_qp_type type, struct pvrdma_qp *qp);
 void pvrdma_set_sq_sizes(struct pvrdma_qp *qp, struct ibv_qp_cap *cap,
 			 enum ibv_qp_type type);
 struct pvrdma_qp *pvrdma_find_qp(struct pvrdma_context *ctx,
 				 uint32_t qpn);
 int pvrdma_store_qp(struct pvrdma_context *ctx, uint32_t qpn,
 		    struct pvrdma_qp *qp);
 void pvrdma_clear_qp(struct pvrdma_context *ctx, uint32_t qpn);

 struct ibv_srq *pvrdma_create_srq(struct ibv_pd *pd,
 				  struct ibv_srq_init_attr *attr);
 int pvrdma_modify_srq(struct ibv_srq *srq, struct ibv_srq_attr *attr,
 		      int attr_mask);
 int pvrdma_query_srq(struct ibv_srq *srq,
 		     struct ibv_srq_attr *attr);
 int pvrdma_destroy_srq(struct ibv_srq *srq);
 int pvrdma_alloc_srq_buf(struct pvrdma_device *dev,
 			 struct ibv_srq_attr *attr,
 			 struct pvrdma_srq *srq);
 int pvrdma_post_srq_recv(struct ibv_srq *ibsrq,
 			 struct ibv_recv_wr *wr,
 			 struct ibv_recv_wr **bad_wr);
 void pvrdma_init_srq_queue(struct pvrdma_srq *srq);

 struct ibv_ah *pvrdma_create_ah(struct ibv_pd *pd, struct ibv_ah_attr *attr);
 int pvrdma_destroy_ah(struct ibv_ah *ah);

 int pvrdma_alloc_av(struct pvrdma_pd *pd, struct ibv_ah_attr *attr,
 		    struct pvrdma_ah *ah);
 void pvrdma_free_av(struct pvrdma_ah *ah);

 #endif /* __PVRDMA_H__ */
	/*
	* Copyright (c) 2012-2016 VMware, Inc. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of EITHER the GNU General Public License
	* version 2 as published by the Free Software Foundation or the BSD
	* 2-Clause License. This program is distributed in the hope that it
	* will be useful, but WITHOUT ANY WARRANTY; WITHOUT EVEN THE IMPLIED
	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	* See the GNU General Public License version 2 for more details at
	* http://www.gnu.org/licenses/old-licenses/gpl-2.0.en.html.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program available in the file COPYING in the main
	* directory of this source tree.
	*
	* The BSD 2-Clause License
	*
	* 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.
	*
	* 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 HOLDER 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 __PVRDMA_H__
	#define __PVRDMA_H__

	#include <config.h>
	#include <endian.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <pthread.h>
	#include <unistd.h>
	#include <sys/mman.h>
	#include <infiniband/driver.h>
	#include <ccan/minmax.h>
	#include <util/compiler.h>

	#include "pvrdma-abi.h"
	#include "pvrdma_ring.h"

	#define PFX "pvrdma: "

	enum {
	PVRDMA_OPCODE_NOP = 0x00,
	PVRDMA_OPCODE_SEND_INVAL = 0x01,
	PVRDMA_OPCODE_RDMA_WRITE = 0x08,
	PVRDMA_OPCODE_RDMA_WRITE_IMM = 0x09,
	PVRDMA_OPCODE_SEND = 0x0a,
	PVRDMA_OPCODE_SEND_IMM = 0x0b,
	PVRDMA_OPCODE_LSO = 0x0e,
	PVRDMA_OPCODE_RDMA_READ = 0x10,
	PVRDMA_OPCODE_ATOMIC_CS = 0x11,
	PVRDMA_OPCODE_ATOMIC_FA = 0x12,
	PVRDMA_OPCODE_ATOMIC_MASK_CS = 0x14,
	PVRDMA_OPCODE_ATOMIC_MASK_FA = 0x15,
	PVRDMA_OPCODE_BIND_MW = 0x18,
	PVRDMA_OPCODE_FMR = 0x19,
	PVRDMA_OPCODE_LOCAL_INVAL = 0x1b,
	PVRDMA_OPCODE_CONFIG_CMD = 0x1f,

	PVRDMA_RECV_OPCODE_RDMA_WRITE_IMM = 0x00,
	PVRDMA_RECV_OPCODE_SEND = 0x01,
	PVRDMA_RECV_OPCODE_SEND_IMM = 0x02,
	PVRDMA_RECV_OPCODE_SEND_INVAL = 0x03,

	PVRDMA_CQE_OPCODE_ERROR = 0x1e,
	PVRDMA_CQE_OPCODE_RESIZE = 0x16,
	};

	enum {
	PVRDMA_WQE_CTRL_FENCE = 1 << 6,
	PVRDMA_WQE_CTRL_CQ_UPDATE = 3 << 2,
	PVRDMA_WQE_CTRL_SOLICIT = 1 << 1,
	};

	struct pvrdma_device {
	struct verbs_device ibv_dev;
	int page_size;
	int abi_version;
	};

	struct pvrdma_context {
	struct verbs_context ibv_ctx;
	void *uar;
	pthread_spinlock_t uar_lock;
	int max_qp_wr;
	int max_sge;
	int max_cqe;
	struct pvrdma_qp **qp_tbl;
	};

	struct pvrdma_buf {
	void *buf;
	size_t length;
	};

	struct pvrdma_pd {
	struct ibv_pd ibv_pd;
	uint32_t pdn;
	};

	struct pvrdma_cq {
	struct ibv_cq ibv_cq;
	struct pvrdma_buf buf;
	struct pvrdma_buf resize_buf;
	pthread_spinlock_t lock;
	struct pvrdma_ring_state *ring_state;
	uint32_t cqe_cnt;
	uint32_t offset;
	uint32_t cqn;
	};

	struct pvrdma_srq {
	struct ibv_srq ibv_srq;
	struct pvrdma_buf buf;
	pthread_spinlock_t lock;
	uint64_t *wrid;
	uint32_t srqn;
	int wqe_cnt;
	int wqe_size;
	int max_gs;
	int wqe_shift;
	struct pvrdma_ring_state *ring_state;
	uint16_t counter;
	int offset;
	};

	struct pvrdma_wq {
	uint64_t *wrid;
	pthread_spinlock_t lock;
	int wqe_cnt;
	int wqe_size;
	struct pvrdma_ring *ring_state;
	int max_gs;
	int wqe_shift;
	int offset;
	};

	struct pvrdma_qp {
	struct ibv_qp ibv_qp;
	struct pvrdma_buf rbuf;
	struct pvrdma_buf sbuf;
	int max_inline_data;
	int buf_size;
	__be32 sq_signal_bits;
	int sq_spare_wqes;
	struct pvrdma_wq sq;
	struct pvrdma_wq rq;
	int is_srq;
	uint32_t qp_handle;
	};

	struct pvrdma_ah {
	struct ibv_ah ibv_ah;
	struct pvrdma_av av;
	};

	static inline unsigned long align(unsigned long val, unsigned long align)
	{
	return (val + align - 1) & ~(align - 1);
	}

	static inline int align_next_power2(int size)
	{
	int val = 1;

	while (val < size)
	val <<= 1;

	return val;
	}

	static inline struct pvrdma_device to_vdev(struct ibv_device ibdev)
	{
	return container_of(ibdev, struct pvrdma_device, ibv_dev.device);
	}

	static inline struct pvrdma_context to_vctx(struct ibv_context ibctx)
	{
	return container_of(ibctx, struct pvrdma_context, ibv_ctx.context);
	}

	static inline struct pvrdma_pd to_vpd(struct ibv_pd ibpd)
	{
	return container_of(ibpd, struct pvrdma_pd, ibv_pd);
	}

	static inline struct pvrdma_cq to_vcq(struct ibv_cq ibcq)
	{
	return container_of(ibcq, struct pvrdma_cq, ibv_cq);
	}

	static inline struct pvrdma_srq to_vsrq(struct ibv_srq ibsrq)
	{
	return container_of(ibsrq, struct pvrdma_srq, ibv_srq);
	}

	static inline struct pvrdma_qp to_vqp(struct ibv_qp ibqp)
	{
	return container_of(ibqp, struct pvrdma_qp, ibv_qp);
	}

	static inline struct pvrdma_ah to_vah(struct ibv_ah ibah)
	{
	return container_of(ibah, struct pvrdma_ah, ibv_ah);
	}

	static inline void pvrdma_write_uar_qp(void *uar, unsigned value)
	{
	(__le32 )(uar + PVRDMA_UAR_QP_OFFSET) = htole32(value);
	}

	static inline void pvrdma_write_uar_cq(void *uar, unsigned value)
	{
	(__le32 )(uar + PVRDMA_UAR_CQ_OFFSET) = htole32(value);
	}

	static inline void pvrdma_write_uar_srq(void *uar, unsigned int value)
	{
	(__le32 )(uar + PVRDMA_UAR_SRQ_OFFSET) = htole32(value);
	}

	static inline int ibv_send_flags_to_pvrdma(int flags)
	{
	return flags;
	}

	static inline enum pvrdma_wr_opcode ibv_wr_opcode_to_pvrdma(
	enum ibv_wr_opcode op)
	{
	return (enum pvrdma_wr_opcode)op;
	}

	static inline enum ibv_wc_status pvrdma_wc_status_to_ibv(
	enum pvrdma_wc_status status)
	{
	return (enum ibv_wc_status)status;
	}

	static inline enum ibv_wc_opcode pvrdma_wc_opcode_to_ibv(
	enum pvrdma_wc_opcode op)
	{
	return (enum ibv_wc_opcode)op;
	}

	static inline int pvrdma_wc_flags_to_ibv(int flags)
	{
	return flags;
	}

	int pvrdma_alloc_buf(struct pvrdma_buf *buf, size_t size, int page_size);
	void pvrdma_free_buf(struct pvrdma_buf *buf);

	int pvrdma_query_device(struct ibv_context *context,
	const struct ibv_query_device_ex_input *input,
	struct ibv_device_attr_ex *attr, size_t attr_size);
	int pvrdma_query_port(struct ibv_context *context, uint8_t port,
	struct ibv_port_attr *attr);

	struct ibv_pd pvrdma_alloc_pd(struct ibv_context context);
	int pvrdma_free_pd(struct ibv_pd *pd);

	struct ibv_mr pvrdma_reg_mr(struct ibv_pd pd, void *addr, size_t length,
	uint64_t hca_va, int access);
	int pvrdma_dereg_mr(struct verbs_mr *mr);

	struct ibv_cq pvrdma_create_cq(struct ibv_context context, int cqe,
	struct ibv_comp_channel *channel,
	int comp_vector);
	int pvrdma_alloc_cq_buf(struct pvrdma_device dev, struct pvrdma_cq cq,
	struct pvrdma_buf *buf, int nent);
	int pvrdma_destroy_cq(struct ibv_cq *cq);
	int pvrdma_req_notify_cq(struct ibv_cq *cq, int solicited);
	int pvrdma_poll_cq(struct ibv_cq cq, int ne, struct ibv_wc wc);
	void pvrdma_cq_event(struct ibv_cq *cq);
	void pvrdma_cq_clean_int(struct pvrdma_cq *cq, uint32_t qp_handle);
	void pvrdma_cq_clean(struct pvrdma_cq *cq, uint32_t qp_handle);
	int pvrdma_get_outstanding_cqes(struct pvrdma_cq *cq);
	void pvrdma_cq_resize_copy_cqes(struct pvrdma_cq cq, void buf,
	int new_cqe);

	struct ibv_qp pvrdma_create_qp(struct ibv_pd pd,
	struct ibv_qp_init_attr *attr);
	int pvrdma_query_qp(struct ibv_qp qp, struct ibv_qp_attr attr,
	int attr_mask, struct ibv_qp_init_attr *init_attr);
	int pvrdma_modify_qp(struct ibv_qp qp, struct ibv_qp_attr attr,
	int attr_mask);
	int pvrdma_destroy_qp(struct ibv_qp *qp);
	void pvrdma_init_qp_indices(struct pvrdma_qp *qp);
	void pvrdma_qp_init_sq_ownership(struct pvrdma_qp *qp);
	int pvrdma_post_send(struct ibv_qp ibqp, struct ibv_send_wr wr,
	struct ibv_send_wr **bad_wr);
	int pvrdma_post_recv(struct ibv_qp ibqp, struct ibv_recv_wr wr,
	struct ibv_recv_wr **bad_wr);
	void pvrdma_calc_sq_wqe_size(struct ibv_qp_cap *cap, enum ibv_qp_type type,
	struct pvrdma_qp *qp);
	int pvrdma_alloc_qp_buf(struct pvrdma_device dev, struct ibv_qp_cap cap,
	enum ibv_qp_type type, struct pvrdma_qp *qp);
	void pvrdma_set_sq_sizes(struct pvrdma_qp qp, struct ibv_qp_cap cap,
	enum ibv_qp_type type);
	struct pvrdma_qp pvrdma_find_qp(struct pvrdma_context ctx,
	uint32_t qpn);
	int pvrdma_store_qp(struct pvrdma_context *ctx, uint32_t qpn,
	struct pvrdma_qp *qp);
	void pvrdma_clear_qp(struct pvrdma_context *ctx, uint32_t qpn);

	struct ibv_srq pvrdma_create_srq(struct ibv_pd pd,
	struct ibv_srq_init_attr *attr);
	int pvrdma_modify_srq(struct ibv_srq srq, struct ibv_srq_attr attr,
	int attr_mask);
	int pvrdma_query_srq(struct ibv_srq *srq,
	struct ibv_srq_attr *attr);
	int pvrdma_destroy_srq(struct ibv_srq *srq);
	int pvrdma_alloc_srq_buf(struct pvrdma_device *dev,
	struct ibv_srq_attr *attr,
	struct pvrdma_srq *srq);
	int pvrdma_post_srq_recv(struct ibv_srq *ibsrq,
	struct ibv_recv_wr *wr,
	struct ibv_recv_wr **bad_wr);
	void pvrdma_init_srq_queue(struct pvrdma_srq *srq);

	struct ibv_ah pvrdma_create_ah(struct ibv_pd pd, struct ibv_ah_attr *attr);
	int pvrdma_destroy_ah(struct ibv_ah *ah);

	int pvrdma_alloc_av(struct pvrdma_pd pd, struct ibv_ah_attr attr,
	struct pvrdma_ah *ah);
	void pvrdma_free_av(struct pvrdma_ah *ah);

	#endif /* __PVRDMA_H__ */