[mirror_ubuntu-zesty-kernel.git] / include / linux / mlx4 / cq.h

/*
 * Copyright (c) 2007 Cisco Systems, Inc.  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 MLX4_CQ_H
#define MLX4_CQ_H

#include <linux/types.h>

#include <linux/mlx4/device.h>
#include <linux/mlx4/doorbell.h>

struct mlx4_cqe {
	__be32			my_qpn;
	__be32			immed_rss_invalid;
	__be32			g_mlpath_rqpn;
	u8			sl;
	u8			reserved1;
	__be16			rlid;
	__be32			ipoib_status;
	__be32			byte_cnt;
	__be16			wqe_index;
	__be16			checksum;
	u8			reserved2[3];
	u8			owner_sr_opcode;
};

struct mlx4_err_cqe {
	__be32			my_qpn;
	u32			reserved1[5];
	__be16			wqe_index;
	u8			vendor_err_syndrome;
	u8			syndrome;
	u8			reserved2[3];
	u8			owner_sr_opcode;
};

enum {
	MLX4_CQE_OWNER_MASK	= 0x80,
	MLX4_CQE_IS_SEND_MASK	= 0x40,
	MLX4_CQE_OPCODE_MASK	= 0x1f
};

enum {
	MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR		= 0x01,
	MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR		= 0x02,
	MLX4_CQE_SYNDROME_LOCAL_PROT_ERR		= 0x04,
	MLX4_CQE_SYNDROME_WR_FLUSH_ERR			= 0x05,
	MLX4_CQE_SYNDROME_MW_BIND_ERR			= 0x06,
	MLX4_CQE_SYNDROME_BAD_RESP_ERR			= 0x10,
	MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR		= 0x11,
	MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR		= 0x12,
	MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR		= 0x13,
	MLX4_CQE_SYNDROME_REMOTE_OP_ERR			= 0x14,
	MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR	= 0x15,
	MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR		= 0x16,
	MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR		= 0x22,
};

enum {
	MLX4_CQE_IPOIB_STATUS_IPV4			= 1 << 22,
	MLX4_CQE_IPOIB_STATUS_IPV4F			= 1 << 23,
	MLX4_CQE_IPOIB_STATUS_IPV6			= 1 << 24,
	MLX4_CQE_IPOIB_STATUS_IPV4OPT			= 1 << 25,
	MLX4_CQE_IPOIB_STATUS_TCP			= 1 << 26,
	MLX4_CQE_IPOIB_STATUS_UDP			= 1 << 27,
	MLX4_CQE_IPOIB_STATUS_IPOK			= 1 << 28,
};

static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
			       void __iomem *uar_page,
			       spinlock_t *doorbell_lock)
{
	__be32 doorbell[2];
	u32 sn;
	u32 ci;

	sn = cq->arm_sn & 3;
	ci = cq->cons_index & 0xffffff;

	*cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci);

	/*
	 * Make sure that the doorbell record in host memory is
	 * written before ringing the doorbell via PCI MMIO.
	 */
	wmb();

	doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn);
	doorbell[1] = cpu_to_be32(ci);

	mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
}

static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
{
	*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
}

enum {
	MLX4_CQ_DB_REQ_NOT_SOL		= 1 << 24,
	MLX4_CQ_DB_REQ_NOT		= 2 << 24
};

int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq,
		   u16 count, u16 period);
int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq,
		   int entries, struct mlx4_mtt *mtt);

#endif /* MLX4_CQ_H */
Commit	Line	Data
225c7b1f RD	1	/*
	2	* Copyright (c) 2007 Cisco Systems, Inc. All rights reserved.
	3	*
	4	* This software is available to you under a choice of one of two
	5	* licenses. You may choose to be licensed under the terms of the GNU
	6	* General Public License (GPL) Version 2, available from the file
	7	* COPYING in the main directory of this source tree, or the
	8	* OpenIB.org BSD license below:
	9	*
	10	* Redistribution and use in source and binary forms, with or
	11	* without modification, are permitted provided that the following
	12	* conditions are met:
	13	*
	14	* - Redistributions of source code must retain the above
	15	* copyright notice, this list of conditions and the following
	16	* disclaimer.
	17	*
	18	* - Redistributions in binary form must reproduce the above
	19	* copyright notice, this list of conditions and the following
	20	* disclaimer in the documentation and/or other materials
	21	* provided with the distribution.
	22	*
	23	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
	24	* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
	25	* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
	26	* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
	27	* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
	28	* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
	29	* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
	30	* SOFTWARE.
	31	*/
	32
	33	#ifndef MLX4_CQ_H
	34	#define MLX4_CQ_H
	35
	36	#include <linux/types.h>
	37
	38	#include <linux/mlx4/device.h>
	39	#include <linux/mlx4/doorbell.h>
	40
	41	struct mlx4_cqe {
	42	__be32 my_qpn;
	43	__be32 immed_rss_invalid;
	44	__be32 g_mlpath_rqpn;
	45	u8 sl;
	46	u8 reserved1;
	47	__be16 rlid;
8ff095ec	48	__be32 ipoib_status;
225c7b1f RD	49	__be32 byte_cnt;
	50	__be16 wqe_index;
	51	__be16 checksum;
8ff095ec	52	u8 reserved2[3];
225c7b1f RD	53	u8 owner_sr_opcode;
	54	};
	55
	56	struct mlx4_err_cqe {
	57	__be32 my_qpn;
	58	u32 reserved1[5];
	59	__be16 wqe_index;
	60	u8 vendor_err_syndrome;
	61	u8 syndrome;
	62	u8 reserved2[3];
	63	u8 owner_sr_opcode;
	64	};
	65
	66	enum {
	67	MLX4_CQE_OWNER_MASK = 0x80,
	68	MLX4_CQE_IS_SEND_MASK = 0x40,
	69	MLX4_CQE_OPCODE_MASK = 0x1f
	70	};
	71
	72	enum {
	73	MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
	74	MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
	75	MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
	76	MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
	77	MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
	78	MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
	79	MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
	80	MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
	81	MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
	82	MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
	83	MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
	84	MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
	85	MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
	86	};
	87
8ff095ec EC	88	enum {
	89	MLX4_CQE_IPOIB_STATUS_IPV4 = 1 << 22,
	90	MLX4_CQE_IPOIB_STATUS_IPV4F = 1 << 23,
	91	MLX4_CQE_IPOIB_STATUS_IPV6 = 1 << 24,
	92	MLX4_CQE_IPOIB_STATUS_IPV4OPT = 1 << 25,
	93	MLX4_CQE_IPOIB_STATUS_TCP = 1 << 26,
	94	MLX4_CQE_IPOIB_STATUS_UDP = 1 << 27,
	95	MLX4_CQE_IPOIB_STATUS_IPOK = 1 << 28,
	96	};
	97
225c7b1f RD	98	static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
	99	void __iomem *uar_page,
	100	spinlock_t *doorbell_lock)
	101	{
	102	__be32 doorbell[2];
	103	u32 sn;
	104	u32 ci;
	105
	106	sn = cq->arm_sn & 3;
	107	ci = cq->cons_index & 0xffffff;
	108
	109	*cq->arm_db = cpu_to_be32(sn << 28 \| cmd \| ci);
	110
	111	/*
	112	* Make sure that the doorbell record in host memory is
	113	* written before ringing the doorbell via PCI MMIO.
	114	*/
	115	wmb();
	116
	117	doorbell[0] = cpu_to_be32(sn << 28 \| cmd \| cq->cqn);
	118	doorbell[1] = cpu_to_be32(ci);
	119
	120	mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
	121	}
	122
	123	static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
	124	{
	125	*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
	126	}
	127
	128	enum {
	129	MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
	130	MLX4_CQ_DB_REQ_NOT = 2 << 24
	131	};
	132
3fdcb97f EC	133	int mlx4_cq_modify(struct mlx4_dev dev, struct mlx4_cq cq,
3fdcb97f EC	134	u16 count, u16 period);
bbf8eed1 VS	135	int mlx4_cq_resize(struct mlx4_dev dev, struct mlx4_cq cq,
bbf8eed1 VS	136	int entries, struct mlx4_mtt *mtt);
3fdcb97f	137
225c7b1f	138	#endif /* MLX4_CQ_H */