[PATCH] IB: move include files to include/rdma

Move the InfiniBand headers from drivers/infiniband/include to include/rdma.
This allows InfiniBand-using code to live elsewhere, and lets us remove the
ugly EXTRA_CFLAGS include path from the InfiniBand Makefiles.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1461 insertions, 0 deletions

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h
new file mode 100644
index 0000000..e16cf94
--- /dev/null
+++ b/include/rdma/ib_verbs.h
@@ -0,0 +1,1461 @@
+/*
+ * Copyright (c) 2004 Mellanox Technologies Ltd.  All rights reserved.
+ * Copyright (c) 2004 Infinicon Corporation.  All rights reserved.
+ * Copyright (c) 2004 Intel Corporation.  All rights reserved.
+ * Copyright (c) 2004 Topspin Corporation.  All rights reserved.
+ * Copyright (c) 2004 Voltaire Corporation.  All rights reserved.
+ * Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
+ * Copyright (c) 2005 Cisco Systems.  All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     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.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * $Id: ib_verbs.h 1349 2004-12-16 21:09:43Z roland $
+ */
+
+#if !defined(IB_VERBS_H)
+#define IB_VERBS_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+
+#include <asm/atomic.h>
+#include <asm/scatterlist.h>
+#include <asm/uaccess.h>
+
+union ib_gid {
+	u8	raw[16];
+	struct {
+		__be64	subnet_prefix;
+		__be64	interface_id;
+	} global;
+};
+
+enum ib_node_type {
+	IB_NODE_CA 	= 1,
+	IB_NODE_SWITCH,
+	IB_NODE_ROUTER
+};
+
+enum ib_device_cap_flags {
+	IB_DEVICE_RESIZE_MAX_WR		= 1,
+	IB_DEVICE_BAD_PKEY_CNTR		= (1<<1),
+	IB_DEVICE_BAD_QKEY_CNTR		= (1<<2),
+	IB_DEVICE_RAW_MULTI		= (1<<3),
+	IB_DEVICE_AUTO_PATH_MIG		= (1<<4),
+	IB_DEVICE_CHANGE_PHY_PORT	= (1<<5),
+	IB_DEVICE_UD_AV_PORT_ENFORCE	= (1<<6),
+	IB_DEVICE_CURR_QP_STATE_MOD	= (1<<7),
+	IB_DEVICE_SHUTDOWN_PORT		= (1<<8),
+	IB_DEVICE_INIT_TYPE		= (1<<9),
+	IB_DEVICE_PORT_ACTIVE_EVENT	= (1<<10),
+	IB_DEVICE_SYS_IMAGE_GUID	= (1<<11),
+	IB_DEVICE_RC_RNR_NAK_GEN	= (1<<12),
+	IB_DEVICE_SRQ_RESIZE		= (1<<13),
+	IB_DEVICE_N_NOTIFY_CQ		= (1<<14),
+};
+
+enum ib_atomic_cap {
+	IB_ATOMIC_NONE,
+	IB_ATOMIC_HCA,
+	IB_ATOMIC_GLOB
+};
+
+struct ib_device_attr {
+	u64			fw_ver;
+	__be64			node_guid;
+	__be64			sys_image_guid;
+	u64			max_mr_size;
+	u64			page_size_cap;
+	u32			vendor_id;
+	u32			vendor_part_id;
+	u32			hw_ver;
+	int			max_qp;
+	int			max_qp_wr;
+	int			device_cap_flags;
+	int			max_sge;
+	int			max_sge_rd;
+	int			max_cq;
+	int			max_cqe;
+	int			max_mr;
+	int			max_pd;
+	int			max_qp_rd_atom;
+	int			max_ee_rd_atom;
+	int			max_res_rd_atom;
+	int			max_qp_init_rd_atom;
+	int			max_ee_init_rd_atom;
+	enum ib_atomic_cap	atomic_cap;
+	int			max_ee;
+	int			max_rdd;
+	int			max_mw;
+	int			max_raw_ipv6_qp;
+	int			max_raw_ethy_qp;
+	int			max_mcast_grp;
+	int			max_mcast_qp_attach;
+	int			max_total_mcast_qp_attach;
+	int			max_ah;
+	int			max_fmr;
+	int			max_map_per_fmr;
+	int			max_srq;
+	int			max_srq_wr;
+	int			max_srq_sge;
+	u16			max_pkeys;
+	u8			local_ca_ack_delay;
+};
+
+enum ib_mtu {
+	IB_MTU_256  = 1,
+	IB_MTU_512  = 2,
+	IB_MTU_1024 = 3,
+	IB_MTU_2048 = 4,
+	IB_MTU_4096 = 5
+};
+
+static inline int ib_mtu_enum_to_int(enum ib_mtu mtu)
+{
+	switch (mtu) {
+	case IB_MTU_256:  return  256;
+	case IB_MTU_512:  return  512;
+	case IB_MTU_1024: return 1024;
+	case IB_MTU_2048: return 2048;
+	case IB_MTU_4096: return 4096;
+	default: 	  return -1;
+	}
+}
+
+enum ib_port_state {
+	IB_PORT_NOP		= 0,
+	IB_PORT_DOWN		= 1,
+	IB_PORT_INIT		= 2,
+	IB_PORT_ARMED		= 3,
+	IB_PORT_ACTIVE		= 4,
+	IB_PORT_ACTIVE_DEFER	= 5
+};
+
+enum ib_port_cap_flags {
+	IB_PORT_SM				= 1 <<  1,
+	IB_PORT_NOTICE_SUP			= 1 <<  2,
+	IB_PORT_TRAP_SUP			= 1 <<  3,
+	IB_PORT_OPT_IPD_SUP                     = 1 <<  4,
+	IB_PORT_AUTO_MIGR_SUP			= 1 <<  5,
+	IB_PORT_SL_MAP_SUP			= 1 <<  6,
+	IB_PORT_MKEY_NVRAM			= 1 <<  7,
+	IB_PORT_PKEY_NVRAM			= 1 <<  8,
+	IB_PORT_LED_INFO_SUP			= 1 <<  9,
+	IB_PORT_SM_DISABLED			= 1 << 10,
+	IB_PORT_SYS_IMAGE_GUID_SUP		= 1 << 11,
+	IB_PORT_PKEY_SW_EXT_PORT_TRAP_SUP	= 1 << 12,
+	IB_PORT_CM_SUP				= 1 << 16,
+	IB_PORT_SNMP_TUNNEL_SUP			= 1 << 17,
+	IB_PORT_REINIT_SUP			= 1 << 18,
+	IB_PORT_DEVICE_MGMT_SUP			= 1 << 19,
+	IB_PORT_VENDOR_CLASS_SUP		= 1 << 20,
+	IB_PORT_DR_NOTICE_SUP			= 1 << 21,
+	IB_PORT_CAP_MASK_NOTICE_SUP		= 1 << 22,
+	IB_PORT_BOOT_MGMT_SUP			= 1 << 23,
+	IB_PORT_LINK_LATENCY_SUP		= 1 << 24,
+	IB_PORT_CLIENT_REG_SUP			= 1 << 25
+};
+
+enum ib_port_width {
+	IB_WIDTH_1X	= 1,
+	IB_WIDTH_4X	= 2,
+	IB_WIDTH_8X	= 4,
+	IB_WIDTH_12X	= 8
+};
+
+static inline int ib_width_enum_to_int(enum ib_port_width width)
+{
+	switch (width) {
+	case IB_WIDTH_1X:  return  1;
+	case IB_WIDTH_4X:  return  4;
+	case IB_WIDTH_8X:  return  8;
+	case IB_WIDTH_12X: return 12;
+	default: 	  return -1;
+	}
+}
+
+struct ib_port_attr {
+	enum ib_port_state	state;
+	enum ib_mtu		max_mtu;
+	enum ib_mtu		active_mtu;
+	int			gid_tbl_len;
+	u32			port_cap_flags;
+	u32			max_msg_sz;
+	u32			bad_pkey_cntr;
+	u32			qkey_viol_cntr;
+	u16			pkey_tbl_len;
+	u16			lid;
+	u16			sm_lid;
+	u8			lmc;
+	u8			max_vl_num;
+	u8			sm_sl;
+	u8			subnet_timeout;
+	u8			init_type_reply;
+	u8			active_width;
+	u8			active_speed;
+	u8                      phys_state;
+};
+
+enum ib_device_modify_flags {
+	IB_DEVICE_MODIFY_SYS_IMAGE_GUID	= 1
+};
+
+struct ib_device_modify {
+	u64	sys_image_guid;
+};
+
+enum ib_port_modify_flags {
+	IB_PORT_SHUTDOWN		= 1,
+	IB_PORT_INIT_TYPE		= (1<<2),
+	IB_PORT_RESET_QKEY_CNTR		= (1<<3)
+};
+
+struct ib_port_modify {
+	u32	set_port_cap_mask;
+	u32	clr_port_cap_mask;
+	u8	init_type;
+};
+
+enum ib_event_type {
+	IB_EVENT_CQ_ERR,
+	IB_EVENT_QP_FATAL,
+	IB_EVENT_QP_REQ_ERR,
+	IB_EVENT_QP_ACCESS_ERR,
+	IB_EVENT_COMM_EST,
+	IB_EVENT_SQ_DRAINED,
+	IB_EVENT_PATH_MIG,
+	IB_EVENT_PATH_MIG_ERR,
+	IB_EVENT_DEVICE_FATAL,
+	IB_EVENT_PORT_ACTIVE,
+	IB_EVENT_PORT_ERR,
+	IB_EVENT_LID_CHANGE,
+	IB_EVENT_PKEY_CHANGE,
+	IB_EVENT_SM_CHANGE,
+	IB_EVENT_SRQ_ERR,
+	IB_EVENT_SRQ_LIMIT_REACHED,
+	IB_EVENT_QP_LAST_WQE_REACHED
+};
+
+struct ib_event {
+	struct ib_device	*device;
+	union {
+		struct ib_cq	*cq;
+		struct ib_qp	*qp;
+		struct ib_srq	*srq;
+		u8		port_num;
+	} element;
+	enum ib_event_type	event;
+};
+
+struct ib_event_handler {
+	struct ib_device *device;
+	void            (*handler)(struct ib_event_handler *, struct ib_event *);
+	struct list_head  list;
+};
+
+#define INIT_IB_EVENT_HANDLER(_ptr, _device, _handler)		\
+	do {							\
+		(_ptr)->device  = _device;			\
+		(_ptr)->handler = _handler;			\
+		INIT_LIST_HEAD(&(_ptr)->list);			\
+	} while (0)
+
+struct ib_global_route {
+	union ib_gid	dgid;
+	u32		flow_label;
+	u8		sgid_index;
+	u8		hop_limit;
+	u8		traffic_class;
+};
+
+struct ib_grh {
+	__be32		version_tclass_flow;
+	__be16		paylen;
+	u8		next_hdr;
+	u8		hop_limit;
+	union ib_gid	sgid;
+	union ib_gid	dgid;
+};
+
+enum {
+	IB_MULTICAST_QPN = 0xffffff
+};
+
+#define IB_LID_PERMISSIVE	__constant_htons(0xFFFF)
+
+enum ib_ah_flags {
+	IB_AH_GRH	= 1
+};
+
+struct ib_ah_attr {
+	struct ib_global_route	grh;
+	u16			dlid;
+	u8			sl;
+	u8			src_path_bits;
+	u8			static_rate;
+	u8			ah_flags;
+	u8			port_num;
+};
+
+enum ib_wc_status {
+	IB_WC_SUCCESS,
+	IB_WC_LOC_LEN_ERR,
+	IB_WC_LOC_QP_OP_ERR,
+	IB_WC_LOC_EEC_OP_ERR,
+	IB_WC_LOC_PROT_ERR,
+	IB_WC_WR_FLUSH_ERR,
+	IB_WC_MW_BIND_ERR,
+	IB_WC_BAD_RESP_ERR,
+	IB_WC_LOC_ACCESS_ERR,
+	IB_WC_REM_INV_REQ_ERR,
+	IB_WC_REM_ACCESS_ERR,
+	IB_WC_REM_OP_ERR,
+	IB_WC_RETRY_EXC_ERR,
+	IB_WC_RNR_RETRY_EXC_ERR,
+	IB_WC_LOC_RDD_VIOL_ERR,
+	IB_WC_REM_INV_RD_REQ_ERR,
+	IB_WC_REM_ABORT_ERR,
+	IB_WC_INV_EECN_ERR,
+	IB_WC_INV_EEC_STATE_ERR,
+	IB_WC_FATAL_ERR,
+	IB_WC_RESP_TIMEOUT_ERR,
+	IB_WC_GENERAL_ERR
+};
+
+enum ib_wc_opcode {
+	IB_WC_SEND,
+	IB_WC_RDMA_WRITE,
+	IB_WC_RDMA_READ,
+	IB_WC_COMP_SWAP,
+	IB_WC_FETCH_ADD,
+	IB_WC_BIND_MW,
+/*
+ * Set value of IB_WC_RECV so consumers can test if a completion is a
+ * receive by testing (opcode & IB_WC_RECV).
+ */
+	IB_WC_RECV			= 1 << 7,
+	IB_WC_RECV_RDMA_WITH_IMM
+};
+
+enum ib_wc_flags {
+	IB_WC_GRH		= 1,
+	IB_WC_WITH_IMM		= (1<<1)
+};
+
+struct ib_wc {
+	u64			wr_id;
+	enum ib_wc_status	status;
+	enum ib_wc_opcode	opcode;
+	u32			vendor_err;
+	u32			byte_len;
+	__be32			imm_data;
+	u32			qp_num;
+	u32			src_qp;
+	int			wc_flags;
+	u16			pkey_index;
+	u16			slid;
+	u8			sl;
+	u8			dlid_path_bits;
+	u8			port_num;	/* valid only for DR SMPs on switches */
+};
+
+enum ib_cq_notify {
+	IB_CQ_SOLICITED,
+	IB_CQ_NEXT_COMP
+};
+
+enum ib_srq_attr_mask {
+	IB_SRQ_MAX_WR	= 1 << 0,
+	IB_SRQ_LIMIT	= 1 << 1,
+};
+
+struct ib_srq_attr {
+	u32	max_wr;
+	u32	max_sge;
+	u32	srq_limit;
+};
+
+struct ib_srq_init_attr {
+	void		      (*event_handler)(struct ib_event *, void *);
+	void		       *srq_context;
+	struct ib_srq_attr	attr;
+};
+
+struct ib_qp_cap {
+	u32	max_send_wr;
+	u32	max_recv_wr;
+	u32	max_send_sge;
+	u32	max_recv_sge;
+	u32	max_inline_data;
+};
+
+enum ib_sig_type {
+	IB_SIGNAL_ALL_WR,
+	IB_SIGNAL_REQ_WR
+};
+
+enum ib_qp_type {
+	/*
+	 * IB_QPT_SMI and IB_QPT_GSI have to be the first two entries
+	 * here (and in that order) since the MAD layer uses them as
+	 * indices into a 2-entry table.
+	 */
+	IB_QPT_SMI,
+	IB_QPT_GSI,
+
+	IB_QPT_RC,
+	IB_QPT_UC,
+	IB_QPT_UD,
+	IB_QPT_RAW_IPV6,
+	IB_QPT_RAW_ETY
+};
+
+struct ib_qp_init_attr {
+	void                  (*event_handler)(struct ib_event *, void *);
+	void		       *qp_context;
+	struct ib_cq	       *send_cq;
+	struct ib_cq	       *recv_cq;
+	struct ib_srq	       *srq;
+	struct ib_qp_cap	cap;
+	enum ib_sig_type	sq_sig_type;
+	enum ib_qp_type		qp_type;
+	u8			port_num; /* special QP types only */
+};
+
+enum ib_rnr_timeout {
+	IB_RNR_TIMER_655_36 =  0,
+	IB_RNR_TIMER_000_01 =  1,
+	IB_RNR_TIMER_000_02 =  2,
+	IB_RNR_TIMER_000_03 =  3,
+	IB_RNR_TIMER_000_04 =  4,
+	IB_RNR_TIMER_000_06 =  5,
+	IB_RNR_TIMER_000_08 =  6,
+	IB_RNR_TIMER_000_12 =  7,
+	IB_RNR_TIMER_000_16 =  8,
+	IB_RNR_TIMER_000_24 =  9,
+	IB_RNR_TIMER_000_32 = 10,
+	IB_RNR_TIMER_000_48 = 11,
+	IB_RNR_TIMER_000_64 = 12,
+	IB_RNR_TIMER_000_96 = 13,
+	IB_RNR_TIMER_001_28 = 14,
+	IB_RNR_TIMER_001_92 = 15,
+	IB_RNR_TIMER_002_56 = 16,
+	IB_RNR_TIMER_003_84 = 17,
+	IB_RNR_TIMER_005_12 = 18,
+	IB_RNR_TIMER_007_68 = 19,
+	IB_RNR_TIMER_010_24 = 20,
+	IB_RNR_TIMER_015_36 = 21,
+	IB_RNR_TIMER_020_48 = 22,
+	IB_RNR_TIMER_030_72 = 23,
+	IB_RNR_TIMER_040_96 = 24,
+	IB_RNR_TIMER_061_44 = 25,
+	IB_RNR_TIMER_081_92 = 26,
+	IB_RNR_TIMER_122_88 = 27,
+	IB_RNR_TIMER_163_84 = 28,
+	IB_RNR_TIMER_245_76 = 29,
+	IB_RNR_TIMER_327_68 = 30,
+	IB_RNR_TIMER_491_52 = 31
+};
+
+enum ib_qp_attr_mask {
+	IB_QP_STATE			= 1,
+	IB_QP_CUR_STATE			= (1<<1),
+	IB_QP_EN_SQD_ASYNC_NOTIFY	= (1<<2),
+	IB_QP_ACCESS_FLAGS		= (1<<3),
+	IB_QP_PKEY_INDEX		= (1<<4),
+	IB_QP_PORT			= (1<<5),
+	IB_QP_QKEY			= (1<<6),
+	IB_QP_AV			= (1<<7),
+	IB_QP_PATH_MTU			= (1<<8),
+	IB_QP_TIMEOUT			= (1<<9),
+	IB_QP_RETRY_CNT			= (1<<10),
+	IB_QP_RNR_RETRY			= (1<<11),
+	IB_QP_RQ_PSN			= (1<<12),
+	IB_QP_MAX_QP_RD_ATOMIC		= (1<<13),
+	IB_QP_ALT_PATH			= (1<<14),
+	IB_QP_MIN_RNR_TIMER		= (1<<15),
+	IB_QP_SQ_PSN			= (1<<16),
+	IB_QP_MAX_DEST_RD_ATOMIC	= (1<<17),
+	IB_QP_PATH_MIG_STATE		= (1<<18),
+	IB_QP_CAP			= (1<<19),
+	IB_QP_DEST_QPN			= (1<<20)
+};
+
+enum ib_qp_state {
+	IB_QPS_RESET,
+	IB_QPS_INIT,
+	IB_QPS_RTR,
+	IB_QPS_RTS,
+	IB_QPS_SQD,
+	IB_QPS_SQE,
+	IB_QPS_ERR
+};
+
+enum ib_mig_state {
+	IB_MIG_MIGRATED,
+	IB_MIG_REARM,
+	IB_MIG_ARMED
+};
+
+struct ib_qp_attr {
+	enum ib_qp_state	qp_state;
+	enum ib_qp_state	cur_qp_state;
+	enum ib_mtu		path_mtu;
+	enum ib_mig_state	path_mig_state;
+	u32			qkey;
+	u32			rq_psn;
+	u32			sq_psn;
+	u32			dest_qp_num;
+	int			qp_access_flags;
+	struct ib_qp_cap	cap;
+	struct ib_ah_attr	ah_attr;
+	struct ib_ah_attr	alt_ah_attr;
+	u16			pkey_index;
+	u16			alt_pkey_index;
+	u8			en_sqd_async_notify;
+	u8			sq_draining;
+	u8			max_rd_atomic;
+	u8			max_dest_rd_atomic;
+	u8			min_rnr_timer;
+	u8			port_num;
+	u8			timeout;
+	u8			retry_cnt;
+	u8			rnr_retry;
+	u8			alt_port_num;
+	u8			alt_timeout;
+};
+
+enum ib_wr_opcode {
+	IB_WR_RDMA_WRITE,
+	IB_WR_RDMA_WRITE_WITH_IMM,
+	IB_WR_SEND,
+	IB_WR_SEND_WITH_IMM,
+	IB_WR_RDMA_READ,
+	IB_WR_ATOMIC_CMP_AND_SWP,
+	IB_WR_ATOMIC_FETCH_AND_ADD
+};
+
+enum ib_send_flags {
+	IB_SEND_FENCE		= 1,
+	IB_SEND_SIGNALED	= (1<<1),
+	IB_SEND_SOLICITED	= (1<<2),
+	IB_SEND_INLINE		= (1<<3)
+};
+
+struct ib_sge {
+	u64	addr;
+	u32	length;
+	u32	lkey;
+};
+
+struct ib_send_wr {
+	struct ib_send_wr      *next;
+	u64			wr_id;
+	struct ib_sge	       *sg_list;
+	int			num_sge;
+	enum ib_wr_opcode	opcode;
+	int			send_flags;
+	__be32			imm_data;
+	union {
+		struct {
+			u64	remote_addr;
+			u32	rkey;
+		} rdma;
+		struct {
+			u64	remote_addr;
+			u64	compare_add;
+			u64	swap;
+			u32	rkey;
+		} atomic;
+		struct {
+			struct ib_ah *ah;
+			struct ib_mad_hdr *mad_hdr;
+			u32	remote_qpn;
+			u32	remote_qkey;
+			int	timeout_ms; /* valid for MADs only */
+			int	retries;    /* valid for MADs only */
+			u16	pkey_index; /* valid for GSI only */
+			u8	port_num;   /* valid for DR SMPs on switch only */
+		} ud;
+	} wr;
+};
+
+struct ib_recv_wr {
+	struct ib_recv_wr      *next;
+	u64			wr_id;
+	struct ib_sge	       *sg_list;
+	int			num_sge;
+};
+
+enum ib_access_flags {
+	IB_ACCESS_LOCAL_WRITE	= 1,
+	IB_ACCESS_REMOTE_WRITE	= (1<<1),
+	IB_ACCESS_REMOTE_READ	= (1<<2),
+	IB_ACCESS_REMOTE_ATOMIC	= (1<<3),
+	IB_ACCESS_MW_BIND	= (1<<4)
+};
+
+struct ib_phys_buf {
+	u64      addr;
+	u64      size;
+};
+
+struct ib_mr_attr {
+	struct ib_pd	*pd;
+	u64		device_virt_addr;
+	u64		size;
+	int		mr_access_flags;
+	u32		lkey;
+	u32		rkey;
+};
+
+enum ib_mr_rereg_flags {
+	IB_MR_REREG_TRANS	= 1,
+	IB_MR_REREG_PD		= (1<<1),
+	IB_MR_REREG_ACCESS	= (1<<2)
+};
+
+struct ib_mw_bind {
+	struct ib_mr   *mr;
+	u64		wr_id;
+	u64		addr;
+	u32		length;
+	int		send_flags;
+	int		mw_access_flags;
+};
+
+struct ib_fmr_attr {
+	int	max_pages;
+	int	max_maps;
+	u8	page_size;
+};
+
+struct ib_ucontext {
+	struct ib_device       *device;
+	struct list_head	pd_list;
+	struct list_head	mr_list;
+	struct list_head	mw_list;
+	struct list_head	cq_list;
+	struct list_head	qp_list;
+	struct list_head	srq_list;
+	struct list_head	ah_list;
+	spinlock_t              lock;
+};
+
+struct ib_uobject {
+	u64			user_handle;	/* handle given to us by userspace */
+	struct ib_ucontext     *context;	/* associated user context */
+	struct list_head	list;		/* link to context's list */
+	u32			id;		/* index into kernel idr */
+};
+
+struct ib_umem {
+	unsigned long		user_base;
+	unsigned long		virt_base;
+	size_t			length;
+	int			offset;
+	int			page_size;
+	int                     writable;
+	struct list_head	chunk_list;
+};
+
+struct ib_umem_chunk {
+	struct list_head	list;
+	int                     nents;
+	int                     nmap;
+	struct scatterlist      page_list[0];
+};
+
+struct ib_udata {
+	void __user *inbuf;
+	void __user *outbuf;
+	size_t       inlen;
+	size_t       outlen;
+};
+
+#define IB_UMEM_MAX_PAGE_CHUNK						\
+	((PAGE_SIZE - offsetof(struct ib_umem_chunk, page_list)) /	\
+	 ((void *) &((struct ib_umem_chunk *) 0)->page_list[1] -	\
+	  (void *) &((struct ib_umem_chunk *) 0)->page_list[0]))
+
+struct ib_umem_object {
+	struct ib_uobject	uobject;
+	struct ib_umem		umem;
+};
+
+struct ib_pd {
+	struct ib_device       *device;
+	struct ib_uobject      *uobject;
+	atomic_t          	usecnt; /* count all resources */
+};
+
+struct ib_ah {
+	struct ib_device	*device;
+	struct ib_pd		*pd;
+	struct ib_uobject	*uobject;
+};
+
+typedef void (*ib_comp_handler)(struct ib_cq *cq, void *cq_context);
+
+struct ib_cq {
+	struct ib_device       *device;
+	struct ib_uobject      *uobject;
+	ib_comp_handler   	comp_handler;
+	void                  (*event_handler)(struct ib_event *, void *);
+	void *            	cq_context;
+	int               	cqe;
+	atomic_t          	usecnt; /* count number of work queues */
+};
+
+struct ib_srq {
+	struct ib_device       *device;
+	struct ib_pd	       *pd;
+	struct ib_uobject      *uobject;
+	void		      (*event_handler)(struct ib_event *, void *);
+	void		       *srq_context;
+	atomic_t		usecnt;
+};
+
+struct ib_qp {
+	struct ib_device       *device;
+	struct ib_pd	       *pd;
+	struct ib_cq	       *send_cq;
+	struct ib_cq	       *recv_cq;
+	struct ib_srq	       *srq;
+	struct ib_uobject      *uobject;
+	void                  (*event_handler)(struct ib_event *, void *);
+	void		       *qp_context;
+	u32			qp_num;
+	enum ib_qp_type		qp_type;
+};
+
+struct ib_mr {
+	struct ib_device  *device;
+	struct ib_pd	  *pd;
+	struct ib_uobject *uobject;
+	u32		   lkey;
+	u32		   rkey;
+	atomic_t	   usecnt; /* count number of MWs */
+};
+
+struct ib_mw {
+	struct ib_device	*device;
+	struct ib_pd		*pd;
+	struct ib_uobject	*uobject;
+	u32			rkey;
+};
+
+struct ib_fmr {
+	struct ib_device	*device;
+	struct ib_pd		*pd;
+	struct list_head	list;
+	u32			lkey;
+	u32			rkey;
+};
+
+struct ib_mad;
+struct ib_grh;
+
+enum ib_process_mad_flags {
+	IB_MAD_IGNORE_MKEY	= 1,
+	IB_MAD_IGNORE_BKEY	= 2,
+	IB_MAD_IGNORE_ALL	= IB_MAD_IGNORE_MKEY | IB_MAD_IGNORE_BKEY
+};
+
+enum ib_mad_result {
+	IB_MAD_RESULT_FAILURE  = 0,      /* (!SUCCESS is the important flag) */
+	IB_MAD_RESULT_SUCCESS  = 1 << 0, /* MAD was successfully processed   */
+	IB_MAD_RESULT_REPLY    = 1 << 1, /* Reply packet needs to be sent    */
+	IB_MAD_RESULT_CONSUMED = 1 << 2  /* Packet consumed: stop processing */
+};
+
+#define IB_DEVICE_NAME_MAX 64
+
+struct ib_cache {
+	rwlock_t                lock;
+	struct ib_event_handler event_handler;
+	struct ib_pkey_cache  **pkey_cache;
+	struct ib_gid_cache   **gid_cache;
+};
+
+struct ib_device {
+	struct device                *dma_device;
+
+	char                          name[IB_DEVICE_NAME_MAX];
+
+	struct list_head              event_handler_list;
+	spinlock_t                    event_handler_lock;
+
+	struct list_head              core_list;
+	struct list_head              client_data_list;
+	spinlock_t                    client_data_lock;
+
+	struct ib_cache               cache;
+
+	u32                           flags;
+
+	int		           (*query_device)(struct ib_device *device,
+						   struct ib_device_attr *device_attr);
+	int		           (*query_port)(struct ib_device *device,
+						 u8 port_num,
+						 struct ib_port_attr *port_attr);
+	int		           (*query_gid)(struct ib_device *device,
+						u8 port_num, int index,
+						union ib_gid *gid);
+	int		           (*query_pkey)(struct ib_device *device,
+						 u8 port_num, u16 index, u16 *pkey);
+	int		           (*modify_device)(struct ib_device *device,
+						    int device_modify_mask,
+						    struct ib_device_modify *device_modify);
+	int		           (*modify_port)(struct ib_device *device,
+						  u8 port_num, int port_modify_mask,
+						  struct ib_port_modify *port_modify);
+	struct ib_ucontext *       (*alloc_ucontext)(struct ib_device *device,
+						     struct ib_udata *udata);
+	int                        (*dealloc_ucontext)(struct ib_ucontext *context);
+	int                        (*mmap)(struct ib_ucontext *context,
+					   struct vm_area_struct *vma);
+	struct ib_pd *             (*alloc_pd)(struct ib_device *device,
+					       struct ib_ucontext *context,
+					       struct ib_udata *udata);
+	int                        (*dealloc_pd)(struct ib_pd *pd);
+	struct ib_ah *             (*create_ah)(struct ib_pd *pd,
+						struct ib_ah_attr *ah_attr);
+	int                        (*modify_ah)(struct ib_ah *ah,
+						struct ib_ah_attr *ah_attr);
+	int                        (*query_ah)(struct ib_ah *ah,
+					       struct ib_ah_attr *ah_attr);
+	int                        (*destroy_ah)(struct ib_ah *ah);
+	struct ib_srq *            (*create_srq)(struct ib_pd *pd,
+						 struct ib_srq_init_attr *srq_init_attr,
+						 struct ib_udata *udata);
+	int                        (*modify_srq)(struct ib_srq *srq,
+						 struct ib_srq_attr *srq_attr,
+						 enum ib_srq_attr_mask srq_attr_mask);
+	int                        (*query_srq)(struct ib_srq *srq,
+						struct ib_srq_attr *srq_attr);
+	int                        (*destroy_srq)(struct ib_srq *srq);
+	int                        (*post_srq_recv)(struct ib_srq *srq,
+						    struct ib_recv_wr *recv_wr,
+						    struct ib_recv_wr **bad_recv_wr);
+	struct ib_qp *             (*create_qp)(struct ib_pd *pd,
+						struct ib_qp_init_attr *qp_init_attr,
+						struct ib_udata *udata);
+	int                        (*modify_qp)(struct ib_qp *qp,
+						struct ib_qp_attr *qp_attr,
+						int qp_attr_mask);
+	int                        (*query_qp)(struct ib_qp *qp,
+					       struct ib_qp_attr *qp_attr,
+					       int qp_attr_mask,
+					       struct ib_qp_init_attr *qp_init_attr);
+	int                        (*destroy_qp)(struct ib_qp *qp);
+	int                        (*post_send)(struct ib_qp *qp,
+						struct ib_send_wr *send_wr,
+						struct ib_send_wr **bad_send_wr);
+	int                        (*post_recv)(struct ib_qp *qp,
+						struct ib_recv_wr *recv_wr,
+						struct ib_recv_wr **bad_recv_wr);
+	struct ib_cq *             (*create_cq)(struct ib_device *device, int cqe,
+						struct ib_ucontext *context,
+						struct ib_udata *udata);
+	int                        (*destroy_cq)(struct ib_cq *cq);
+	int                        (*resize_cq)(struct ib_cq *cq, int *cqe);
+	int                        (*poll_cq)(struct ib_cq *cq, int num_entries,
+					      struct ib_wc *wc);
+	int                        (*peek_cq)(struct ib_cq *cq, int wc_cnt);
+	int                        (*req_notify_cq)(struct ib_cq *cq,
+						    enum ib_cq_notify cq_notify);
+	int                        (*req_ncomp_notif)(struct ib_cq *cq,
+						      int wc_cnt);
+	struct ib_mr *             (*get_dma_mr)(struct ib_pd *pd,
+						 int mr_access_flags);
+	struct ib_mr *             (*reg_phys_mr)(struct ib_pd *pd,
+						  struct ib_phys_buf *phys_buf_array,
+						  int num_phys_buf,
+						  int mr_access_flags,
+						  u64 *iova_start);
+	struct ib_mr *             (*reg_user_mr)(struct ib_pd *pd,
+						  struct ib_umem *region,
+						  int mr_access_flags,
+						  struct ib_udata *udata);
+	int                        (*query_mr)(struct ib_mr *mr,
+					       struct ib_mr_attr *mr_attr);
+	int                        (*dereg_mr)(struct ib_mr *mr);
+	int                        (*rereg_phys_mr)(struct ib_mr *mr,
+						    int mr_rereg_mask,
+						    struct ib_pd *pd,
+						    struct ib_phys_buf *phys_buf_array,
+						    int num_phys_buf,
+						    int mr_access_flags,
+						    u64 *iova_start);
+	struct ib_mw *             (*alloc_mw)(struct ib_pd *pd);
+	int                        (*bind_mw)(struct ib_qp *qp,
+					      struct ib_mw *mw,
+					      struct ib_mw_bind *mw_bind);
+	int                        (*dealloc_mw)(struct ib_mw *mw);
+	struct ib_fmr *	           (*alloc_fmr)(struct ib_pd *pd,
+						int mr_access_flags,
+						struct ib_fmr_attr *fmr_attr);
+	int		           (*map_phys_fmr)(struct ib_fmr *fmr,
+						   u64 *page_list, int list_len,
+						   u64 iova);
+	int		           (*unmap_fmr)(struct list_head *fmr_list);
+	int		           (*dealloc_fmr)(struct ib_fmr *fmr);
+	int                        (*attach_mcast)(struct ib_qp *qp,
+						   union ib_gid *gid,
+						   u16 lid);
+	int                        (*detach_mcast)(struct ib_qp *qp,
+						   union ib_gid *gid,
+						   u16 lid);
+	int                        (*process_mad)(struct ib_device *device,
+						  int process_mad_flags,
+						  u8 port_num,
+						  struct ib_wc *in_wc,
+						  struct ib_grh *in_grh,
+						  struct ib_mad *in_mad,
+						  struct ib_mad *out_mad);
+
+	struct module               *owner;
+	struct class_device          class_dev;
+	struct kobject               ports_parent;
+	struct list_head             port_list;
+
+	enum {
+		IB_DEV_UNINITIALIZED,
+		IB_DEV_REGISTERED,
+		IB_DEV_UNREGISTERED
+	}                            reg_state;
+
+	u8                           node_type;
+	u8                           phys_port_cnt;
+};
+
+struct ib_client {
+	char  *name;
+	void (*add)   (struct ib_device *);
+	void (*remove)(struct ib_device *);
+
+	struct list_head list;
+};
+
+struct ib_device *ib_alloc_device(size_t size);
+void ib_dealloc_device(struct ib_device *device);
+
+int ib_register_device   (struct ib_device *device);
+void ib_unregister_device(struct ib_device *device);
+
+int ib_register_client   (struct ib_client *client);
+void ib_unregister_client(struct ib_client *client);
+
+void *ib_get_client_data(struct ib_device *device, struct ib_client *client);
+void  ib_set_client_data(struct ib_device *device, struct ib_client *client,
+			 void *data);
+
+static inline int ib_copy_from_udata(void *dest, struct ib_udata *udata, size_t len)
+{
+	return copy_from_user(dest, udata->inbuf, len) ? -EFAULT : 0;
+}
+
+static inline int ib_copy_to_udata(struct ib_udata *udata, void *src, size_t len)
+{
+	return copy_to_user(udata->outbuf, src, len) ? -EFAULT : 0;
+}
+
+int ib_register_event_handler  (struct ib_event_handler *event_handler);
+int ib_unregister_event_handler(struct ib_event_handler *event_handler);
+void ib_dispatch_event(struct ib_event *event);
+
+int ib_query_device(struct ib_device *device,
+		    struct ib_device_attr *device_attr);
+
+int ib_query_port(struct ib_device *device,
+		  u8 port_num, struct ib_port_attr *port_attr);
+
+int ib_query_gid(struct ib_device *device,
+		 u8 port_num, int index, union ib_gid *gid);
+
+int ib_query_pkey(struct ib_device *device,
+		  u8 port_num, u16 index, u16 *pkey);
+
+int ib_modify_device(struct ib_device *device,
+		     int device_modify_mask,
+		     struct ib_device_modify *device_modify);
+
+int ib_modify_port(struct ib_device *device,
+		   u8 port_num, int port_modify_mask,
+		   struct ib_port_modify *port_modify);
+
+/**
+ * ib_alloc_pd - Allocates an unused protection domain.
+ * @device: The device on which to allocate the protection domain.
+ *
+ * A protection domain object provides an association between QPs, shared
+ * receive queues, address handles, memory regions, and memory windows.
+ */
+struct ib_pd *ib_alloc_pd(struct ib_device *device);
+
+/**
+ * ib_dealloc_pd - Deallocates a protection domain.
+ * @pd: The protection domain to deallocate.
+ */
+int ib_dealloc_pd(struct ib_pd *pd);
+
+/**
+ * ib_create_ah - Creates an address handle for the given address vector.
+ * @pd: The protection domain associated with the address handle.
+ * @ah_attr: The attributes of the address vector.
+ *
+ * The address handle is used to reference a local or global destination
+ * in all UD QP post sends.
+ */
+struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
+
+/**
+ * ib_create_ah_from_wc - Creates an address handle associated with the
+ *   sender of the specified work completion.
+ * @pd: The protection domain associated with the address handle.
+ * @wc: Work completion information associated with a received message.
+ * @grh: References the received global route header.  This parameter is
+ *   ignored unless the work completion indicates that the GRH is valid.
+ * @port_num: The outbound port number to associate with the address.
+ *
+ * The address handle is used to reference a local or global destination
+ * in all UD QP post sends.
+ */
+struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
+				   struct ib_grh *grh, u8 port_num);
+
+/**
+ * ib_modify_ah - Modifies the address vector associated with an address
+ *   handle.
+ * @ah: The address handle to modify.
+ * @ah_attr: The new address vector attributes to associate with the
+ *   address handle.
+ */
+int ib_modify_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
+
+/**
+ * ib_query_ah - Queries the address vector associated with an address
+ *   handle.
+ * @ah: The address handle to query.
+ * @ah_attr: The address vector attributes associated with the address
+ *   handle.
+ */
+int ib_query_ah(struct ib_ah *ah, struct ib_ah_attr *ah_attr);
+
+/**
+ * ib_destroy_ah - Destroys an address handle.
+ * @ah: The address handle to destroy.
+ */
+int ib_destroy_ah(struct ib_ah *ah);
+
+/**
+ * ib_create_srq - Creates a SRQ associated with the specified protection
+ *   domain.
+ * @pd: The protection domain associated with the SRQ.
+ * @srq_init_attr: A list of initial attributes required to create the SRQ.
+ *
+ * srq_attr->max_wr and srq_attr->max_sge are read the determine the
+ * requested size of the SRQ, and set to the actual values allocated
+ * on return.  If ib_create_srq() succeeds, then max_wr and max_sge
+ * will always be at least as large as the requested values.
+ */
+struct ib_srq *ib_create_srq(struct ib_pd *pd,
+			     struct ib_srq_init_attr *srq_init_attr);
+
+/**
+ * ib_modify_srq - Modifies the attributes for the specified SRQ.
+ * @srq: The SRQ to modify.
+ * @srq_attr: On input, specifies the SRQ attributes to modify.  On output,
+ *   the current values of selected SRQ attributes are returned.
+ * @srq_attr_mask: A bit-mask used to specify which attributes of the SRQ
+ *   are being modified.
+ *
+ * The mask may contain IB_SRQ_MAX_WR to resize the SRQ and/or
+ * IB_SRQ_LIMIT to set the SRQ's limit and request notification when
+ * the number of receives queued drops below the limit.
+ */
+int ib_modify_srq(struct ib_srq *srq,
+		  struct ib_srq_attr *srq_attr,
+		  enum ib_srq_attr_mask srq_attr_mask);
+
+/**
+ * ib_query_srq - Returns the attribute list and current values for the
+ *   specified SRQ.
+ * @srq: The SRQ to query.
+ * @srq_attr: The attributes of the specified SRQ.
+ */
+int ib_query_srq(struct ib_srq *srq,
+		 struct ib_srq_attr *srq_attr);
+
+/**
+ * ib_destroy_srq - Destroys the specified SRQ.
+ * @srq: The SRQ to destroy.
+ */
+int ib_destroy_srq(struct ib_srq *srq);
+
+/**
+ * ib_post_srq_recv - Posts a list of work requests to the specified SRQ.
+ * @srq: The SRQ to post the work request on.
+ * @recv_wr: A list of work requests to post on the receive queue.
+ * @bad_recv_wr: On an immediate failure, this parameter will reference
+ *   the work request that failed to be posted on the QP.
+ */
+static inline int ib_post_srq_recv(struct ib_srq *srq,
+				   struct ib_recv_wr *recv_wr,
+				   struct ib_recv_wr **bad_recv_wr)
+{
+	return srq->device->post_srq_recv(srq, recv_wr, bad_recv_wr);
+}
+
+/**
+ * ib_create_qp - Creates a QP associated with the specified protection
+ *   domain.
+ * @pd: The protection domain associated with the QP.
+ * @qp_init_attr: A list of initial attributes required to create the QP.
+ */
+struct ib_qp *ib_create_qp(struct ib_pd *pd,
+			   struct ib_qp_init_attr *qp_init_attr);
+
+/**
+ * ib_modify_qp - Modifies the attributes for the specified QP and then
+ *   transitions the QP to the given state.
+ * @qp: The QP to modify.
+ * @qp_attr: On input, specifies the QP attributes to modify.  On output,
+ *   the current values of selected QP attributes are returned.
+ * @qp_attr_mask: A bit-mask used to specify which attributes of the QP
+ *   are being modified.
+ */
+int ib_modify_qp(struct ib_qp *qp,
+		 struct ib_qp_attr *qp_attr,
+		 int qp_attr_mask);
+
+/**
+ * ib_query_qp - Returns the attribute list and current values for the
+ *   specified QP.
+ * @qp: The QP to query.
+ * @qp_attr: The attributes of the specified QP.
+ * @qp_attr_mask: A bit-mask used to select specific attributes to query.
+ * @qp_init_attr: Additional attributes of the selected QP.
+ *
+ * The qp_attr_mask may be used to limit the query to gathering only the
+ * selected attributes.
+ */
+int ib_query_qp(struct ib_qp *qp,
+		struct ib_qp_attr *qp_attr,
+		int qp_attr_mask,
+		struct ib_qp_init_attr *qp_init_attr);
+
+/**
+ * ib_destroy_qp - Destroys the specified QP.
+ * @qp: The QP to destroy.
+ */
+int ib_destroy_qp(struct ib_qp *qp);
+
+/**
+ * ib_post_send - Posts a list of work requests to the send queue of
+ *   the specified QP.
+ * @qp: The QP to post the work request on.
+ * @send_wr: A list of work requests to post on the send queue.
+ * @bad_send_wr: On an immediate failure, this parameter will reference
+ *   the work request that failed to be posted on the QP.
+ */
+static inline int ib_post_send(struct ib_qp *qp,
+			       struct ib_send_wr *send_wr,
+			       struct ib_send_wr **bad_send_wr)
+{
+	return qp->device->post_send(qp, send_wr, bad_send_wr);
+}
+
+/**
+ * ib_post_recv - Posts a list of work requests to the receive queue of
+ *   the specified QP.
+ * @qp: The QP to post the work request on.
+ * @recv_wr: A list of work requests to post on the receive queue.
+ * @bad_recv_wr: On an immediate failure, this parameter will reference
+ *   the work request that failed to be posted on the QP.
+ */
+static inline int ib_post_recv(struct ib_qp *qp,
+			       struct ib_recv_wr *recv_wr,
+			       struct ib_recv_wr **bad_recv_wr)
+{
+	return qp->device->post_recv(qp, recv_wr, bad_recv_wr);
+}
+
+/**
+ * ib_create_cq - Creates a CQ on the specified device.
+ * @device: The device on which to create the CQ.
+ * @comp_handler: A user-specified callback that is invoked when a
+ *   completion event occurs on the CQ.
+ * @event_handler: A user-specified callback that is invoked when an
+ *   asynchronous event not associated with a completion occurs on the CQ.
+ * @cq_context: Context associated with the CQ returned to the user via
+ *   the associated completion and event handlers.
+ * @cqe: The minimum size of the CQ.
+ *
+ * Users can examine the cq structure to determine the actual CQ size.
+ */
+struct ib_cq *ib_create_cq(struct ib_device *device,
+			   ib_comp_handler comp_handler,
+			   void (*event_handler)(struct ib_event *, void *),
+			   void *cq_context, int cqe);
+
+/**
+ * ib_resize_cq - Modifies the capacity of the CQ.
+ * @cq: The CQ to resize.
+ * @cqe: The minimum size of the CQ.
+ *
+ * Users can examine the cq structure to determine the actual CQ size.
+ */
+int ib_resize_cq(struct ib_cq *cq, int cqe);
+
+/**
+ * ib_destroy_cq - Destroys the specified CQ.
+ * @cq: The CQ to destroy.
+ */
+int ib_destroy_cq(struct ib_cq *cq);
+
+/**
+ * ib_poll_cq - poll a CQ for completion(s)
+ * @cq:the CQ being polled
+ * @num_entries:maximum number of completions to return
+ * @wc:array of at least @num_entries &struct ib_wc where completions
+ *   will be returned
+ *
+ * Poll a CQ for (possibly multiple) completions.  If the return value
+ * is < 0, an error occurred.  If the return value is >= 0, it is the
+ * number of completions returned.  If the return value is
+ * non-negative and < num_entries, then the CQ was emptied.
+ */
+static inline int ib_poll_cq(struct ib_cq *cq, int num_entries,
+			     struct ib_wc *wc)
+{
+	return cq->device->poll_cq(cq, num_entries, wc);
+}
+
+/**
+ * ib_peek_cq - Returns the number of unreaped completions currently
+ *   on the specified CQ.
+ * @cq: The CQ to peek.
+ * @wc_cnt: A minimum number of unreaped completions to check for.
+ *
+ * If the number of unreaped completions is greater than or equal to wc_cnt,
+ * this function returns wc_cnt, otherwise, it returns the actual number of
+ * unreaped completions.
+ */
+int ib_peek_cq(struct ib_cq *cq, int wc_cnt);
+
+/**
+ * ib_req_notify_cq - Request completion notification on a CQ.
+ * @cq: The CQ to generate an event for.
+ * @cq_notify: If set to %IB_CQ_SOLICITED, completion notification will
+ *   occur on the next solicited event. If set to %IB_CQ_NEXT_COMP,
+ *   notification will occur on the next completion.
+ */
+static inline int ib_req_notify_cq(struct ib_cq *cq,
+				   enum ib_cq_notify cq_notify)
+{
+	return cq->device->req_notify_cq(cq, cq_notify);
+}
+
+/**
+ * ib_req_ncomp_notif - Request completion notification when there are
+ *   at least the specified number of unreaped completions on the CQ.
+ * @cq: The CQ to generate an event for.
+ * @wc_cnt: The number of unreaped completions that should be on the
+ *   CQ before an event is generated.
+ */
+static inline int ib_req_ncomp_notif(struct ib_cq *cq, int wc_cnt)
+{
+	return cq->device->req_ncomp_notif ?
+		cq->device->req_ncomp_notif(cq, wc_cnt) :
+		-ENOSYS;
+}
+
+/**
+ * ib_get_dma_mr - Returns a memory region for system memory that is
+ *   usable for DMA.
+ * @pd: The protection domain associated with the memory region.
+ * @mr_access_flags: Specifies the memory access rights.
+ */
+struct ib_mr *ib_get_dma_mr(struct ib_pd *pd, int mr_access_flags);
+
+/**
+ * ib_reg_phys_mr - Prepares a virtually addressed memory region for use
+ *   by an HCA.
+ * @pd: The protection domain associated assigned to the registered region.
+ * @phys_buf_array: Specifies a list of physical buffers to use in the
+ *   memory region.
+ * @num_phys_buf: Specifies the size of the phys_buf_array.
+ * @mr_access_flags: Specifies the memory access rights.
+ * @iova_start: The offset of the region's starting I/O virtual address.
+ */
+struct ib_mr *ib_reg_phys_mr(struct ib_pd *pd,
+			     struct ib_phys_buf *phys_buf_array,
+			     int num_phys_buf,
+			     int mr_access_flags,
+			     u64 *iova_start);
+
+/**
+ * ib_rereg_phys_mr - Modifies the attributes of an existing memory region.
+ *   Conceptually, this call performs the functions deregister memory region
+ *   followed by register physical memory region.  Where possible,
+ *   resources are reused instead of deallocated and reallocated.
+ * @mr: The memory region to modify.
+ * @mr_rereg_mask: A bit-mask used to indicate which of the following
+ *   properties of the memory region are being modified.
+ * @pd: If %IB_MR_REREG_PD is set in mr_rereg_mask, this field specifies
+ *   the new protection domain to associated with the memory region,
+ *   otherwise, this parameter is ignored.
+ * @phys_buf_array: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
+ *   field specifies a list of physical buffers to use in the new
+ *   translation, otherwise, this parameter is ignored.
+ * @num_phys_buf: If %IB_MR_REREG_TRANS is set in mr_rereg_mask, this
+ *   field specifies the size of the phys_buf_array, otherwise, this
+ *   parameter is ignored.
+ * @mr_access_flags: If %IB_MR_REREG_ACCESS is set in mr_rereg_mask, this
+ *   field specifies the new memory access rights, otherwise, this
+ *   parameter is ignored.
+ * @iova_start: The offset of the region's starting I/O virtual address.
+ */
+int ib_rereg_phys_mr(struct ib_mr *mr,
+		     int mr_rereg_mask,
+		     struct ib_pd *pd,
+		     struct ib_phys_buf *phys_buf_array,
+		     int num_phys_buf,
+		     int mr_access_flags,
+		     u64 *iova_start);
+
+/**
+ * ib_query_mr - Retrieves information about a specific memory region.
+ * @mr: The memory region to retrieve information about.
+ * @mr_attr: The attributes of the specified memory region.
+ */
+int ib_query_mr(struct ib_mr *mr, struct ib_mr_attr *mr_attr);
+
+/**
+ * ib_dereg_mr - Deregisters a memory region and removes it from the
+ *   HCA translation table.
+ * @mr: The memory region to deregister.
+ */
+int ib_dereg_mr(struct ib_mr *mr);
+
+/**
+ * ib_alloc_mw - Allocates a memory window.
+ * @pd: The protection domain associated with the memory window.
+ */
+struct ib_mw *ib_alloc_mw(struct ib_pd *pd);
+
+/**
+ * ib_bind_mw - Posts a work request to the send queue of the specified
+ *   QP, which binds the memory window to the given address range and
+ *   remote access attributes.
+ * @qp: QP to post the bind work request on.
+ * @mw: The memory window to bind.
+ * @mw_bind: Specifies information about the memory window, including
+ *   its address range, remote access rights, and associated memory region.
+ */
+static inline int ib_bind_mw(struct ib_qp *qp,
+			     struct ib_mw *mw,
+			     struct ib_mw_bind *mw_bind)
+{
+	/* XXX reference counting in corresponding MR? */
+	return mw->device->bind_mw ?
+		mw->device->bind_mw(qp, mw, mw_bind) :
+		-ENOSYS;
+}
+
+/**
+ * ib_dealloc_mw - Deallocates a memory window.
+ * @mw: The memory window to deallocate.
+ */
+int ib_dealloc_mw(struct ib_mw *mw);
+
+/**
+ * ib_alloc_fmr - Allocates a unmapped fast memory region.
+ * @pd: The protection domain associated with the unmapped region.
+ * @mr_access_flags: Specifies the memory access rights.
+ * @fmr_attr: Attributes of the unmapped region.
+ *
+ * A fast memory region must be mapped before it can be used as part of
+ * a work request.
+ */
+struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
+			    int mr_access_flags,
+			    struct ib_fmr_attr *fmr_attr);
+
+/**
+ * ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
+ * @fmr: The fast memory region to associate with the pages.
+ * @page_list: An array of physical pages to map to the fast memory region.
+ * @list_len: The number of pages in page_list.
+ * @iova: The I/O virtual address to use with the mapped region.
+ */
+static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
+				  u64 *page_list, int list_len,
+				  u64 iova)
+{
+	return fmr->device->map_phys_fmr(fmr, page_list, list_len, iova);
+}
+
+/**
+ * ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
+ * @fmr_list: A linked list of fast memory regions to unmap.
+ */
+int ib_unmap_fmr(struct list_head *fmr_list);
+
+/**
+ * ib_dealloc_fmr - Deallocates a fast memory region.
+ * @fmr: The fast memory region to deallocate.
+ */
+int ib_dealloc_fmr(struct ib_fmr *fmr);
+
+/**
+ * ib_attach_mcast - Attaches the specified QP to a multicast group.
+ * @qp: QP to attach to the multicast group.  The QP must be type
+ *   IB_QPT_UD.
+ * @gid: Multicast group GID.
+ * @lid: Multicast group LID in host byte order.
+ *
+ * In order to send and receive multicast packets, subnet
+ * administration must have created the multicast group and configured
+ * the fabric appropriately.  The port associated with the specified
+ * QP must also be a member of the multicast group.
+ */
+int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+/**
+ * ib_detach_mcast - Detaches the specified QP from a multicast group.
+ * @qp: QP to detach from the multicast group.
+ * @gid: Multicast group GID.
+ * @lid: Multicast group LID in host byte order.
+ */
+int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid);
+
+#endif /* IB_VERBS_H */