xref: /freebsd-10.1-release/contrib/ofed/libmthca/src/wqe.h

/*
 * Copyright (c) 2004, 2005 Topspin Communications.  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.
 */

#ifndef WQE_H
#define WQE_H

enum {
	MTHCA_SEND_DOORBELL	= 0x10,
	MTHCA_RECV_DOORBELL	= 0x18
};

enum {
	MTHCA_NEXT_DBD       = 1 << 7,
	MTHCA_NEXT_FENCE     = 1 << 6,
	MTHCA_NEXT_CQ_UPDATE = 1 << 3,
	MTHCA_NEXT_EVENT_GEN = 1 << 2,
	MTHCA_NEXT_SOLICIT   = 1 << 1,
};

enum {
	MTHCA_INLINE_SEG = 1 << 31
};

enum {
	MTHCA_INVAL_LKEY			= 0x100,
	MTHCA_TAVOR_MAX_WQES_PER_RECV_DB	= 256,
	MTHCA_ARBEL_MAX_WQES_PER_SEND_DB	= 255
};

struct mthca_next_seg {
	uint32_t	nda_op;	/* [31:6] next WQE [4:0] next opcode */
	uint32_t	ee_nds;	/* [31:8] next EE  [7] DBD [6] F [5:0] next WQE size */
	uint32_t	flags;	/* [3] CQ [2] Event [1] Solicit */
	uint32_t	imm;	/* immediate data */
};

struct mthca_tavor_ud_seg {
	uint32_t	reserved1;
	uint32_t	lkey;
	uint64_t	av_addr;
	uint32_t	reserved2[4];
	uint32_t	dqpn;
	uint32_t	qkey;
	uint32_t	reserved3[2];
};

struct mthca_arbel_ud_seg {
	uint32_t	av[8];
	uint32_t	dqpn;
	uint32_t	qkey;
	uint32_t	reserved[2];
};

struct mthca_bind_seg {
	uint32_t	flags;	/* [31] Atomic [30] rem write [29] rem read */
	uint32_t	reserved;
	uint32_t	new_rkey;
	uint32_t	lkey;
	uint64_t	addr;
	uint64_t	length;
};

struct mthca_raddr_seg {
	uint64_t	raddr;
	uint32_t	rkey;
	uint32_t	reserved;
};

struct mthca_atomic_seg {
	uint64_t	swap_add;
	uint64_t	compare;
};

struct mthca_data_seg {
	uint32_t	byte_count;
	uint32_t	lkey;
	uint64_t	addr;
};

struct mthca_inline_seg {
	uint32_t	byte_count;
};

#endif /* WQE_H */