[linux-2.6-block.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			vlan_my_qpn;
	__be32			immed_rss_invalid;
	__be32			g_mlpath_rqpn;
	__be16			sl_vid;
	__be16			rlid;
	__be16			status;
	u8			ipv6_ext_mask;
	u8			badfcs_enc;
	__be32			byte_cnt;
	__be16			wqe_index;
	__be16			checksum;
	u8			reserved[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;
};

struct mlx4_ts_cqe {
	__be32			vlan_my_qpn;
	__be32			immed_rss_invalid;
	__be32			g_mlpath_rqpn;
	__be32			timestamp_hi;
	__be16			status;
	u8			ipv6_ext_mask;
	u8			badfcs_enc;
	__be32			byte_cnt;
	__be16			wqe_index;
	__be16			checksum;
	u8			reserved;
	__be16			timestamp_lo;
	u8			owner_sr_opcode;
} __packed;

enum {
	MLX4_CQE_VLAN_PRESENT_MASK	= 1 << 29,
	MLX4_CQE_QPN_MASK		= 0xffffff,
};

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_STATUS_IPV4		= 1 << 6,
	MLX4_CQE_STATUS_IPV4F		= 1 << 7,
	MLX4_CQE_STATUS_IPV6		= 1 << 8,
	MLX4_CQE_STATUS_IPV4OPT		= 1 << 9,
	MLX4_CQE_STATUS_TCP		= 1 << 10,
	MLX4_CQE_STATUS_UDP		= 1 << 11,
	MLX4_CQE_STATUS_IPOK		= 1 << 12,
};

enum {
	MLX4_CQE_LLC                     = 1,
	MLX4_CQE_SNAP                    = 1 << 1,
	MLX4_CQE_BAD_FCS                 = 1 << 4,
};

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 {
f780a9f1	42	__be32 vlan_my_qpn;
225c7b1f RD	43	__be32 immed_rss_invalid;
225c7b1f RD	44	__be32 g_mlpath_rqpn;
f780a9f1	45	__be16 sl_vid;
225c7b1f	46	__be16 rlid;
f780a9f1 YP	47	__be16 status;
	48	u8 ipv6_ext_mask;
	49	u8 badfcs_enc;
225c7b1f RD	50	__be32 byte_cnt;
	51	__be16 wqe_index;
	52	__be16 checksum;
f780a9f1	53	u8 reserved[3];
225c7b1f RD	54	u8 owner_sr_opcode;
	55	};
	56
	57	struct mlx4_err_cqe {
	58	__be32 my_qpn;
	59	u32 reserved1[5];
	60	__be16 wqe_index;
	61	u8 vendor_err_syndrome;
	62	u8 syndrome;
	63	u8 reserved2[3];
	64	u8 owner_sr_opcode;
	65	};
	66
ec693d47 AV	67	struct mlx4_ts_cqe {
	68	__be32 vlan_my_qpn;
	69	__be32 immed_rss_invalid;
	70	__be32 g_mlpath_rqpn;
	71	__be32 timestamp_hi;
	72	__be16 status;
	73	u8 ipv6_ext_mask;
	74	u8 badfcs_enc;
	75	__be32 byte_cnt;
	76	__be16 wqe_index;
	77	__be16 checksum;
	78	u8 reserved;
	79	__be16 timestamp_lo;
	80	u8 owner_sr_opcode;
	81	} __packed;
	82
f780a9f1 YP	83	enum {
	84	MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29,
	85	MLX4_CQE_QPN_MASK = 0xffffff,
	86	};
	87
225c7b1f RD	88	enum {
	89	MLX4_CQE_OWNER_MASK = 0x80,
	90	MLX4_CQE_IS_SEND_MASK = 0x40,
	91	MLX4_CQE_OPCODE_MASK = 0x1f
	92	};
	93
	94	enum {
	95	MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
	96	MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
	97	MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
	98	MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
	99	MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
	100	MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
	101	MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
	102	MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
	103	MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
	104	MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
	105	MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
	106	MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
	107	MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
	108	};
	109
8ff095ec	110	enum {
f780a9f1 YP	111	MLX4_CQE_STATUS_IPV4 = 1 << 6,
	112	MLX4_CQE_STATUS_IPV4F = 1 << 7,
	113	MLX4_CQE_STATUS_IPV6 = 1 << 8,
	114	MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
	115	MLX4_CQE_STATUS_TCP = 1 << 10,
	116	MLX4_CQE_STATUS_UDP = 1 << 11,
	117	MLX4_CQE_STATUS_IPOK = 1 << 12,
	118	};
	119
	120	enum {
	121	MLX4_CQE_LLC = 1,
	122	MLX4_CQE_SNAP = 1 << 1,
	123	MLX4_CQE_BAD_FCS = 1 << 4,
8ff095ec EC	124	};
8ff095ec EC	125
225c7b1f RD	126	static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
	127	void __iomem *uar_page,
	128	spinlock_t *doorbell_lock)
	129	{
	130	__be32 doorbell[2];
	131	u32 sn;
	132	u32 ci;
	133
	134	sn = cq->arm_sn & 3;
	135	ci = cq->cons_index & 0xffffff;
	136
	137	*cq->arm_db = cpu_to_be32(sn << 28 \| cmd \| ci);
	138
	139	/*
	140	* Make sure that the doorbell record in host memory is
	141	* written before ringing the doorbell via PCI MMIO.
	142	*/
	143	wmb();
	144
	145	doorbell[0] = cpu_to_be32(sn << 28 \| cmd \| cq->cqn);
	146	doorbell[1] = cpu_to_be32(ci);
	147
	148	mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
	149	}
	150
	151	static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
	152	{
	153	*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
	154	}
	155
	156	enum {
	157	MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
	158	MLX4_CQ_DB_REQ_NOT = 2 << 24
	159	};
	160
3fdcb97f EC	161	int mlx4_cq_modify(struct mlx4_dev dev, struct mlx4_cq cq,
3fdcb97f EC	162	u16 count, u16 period);
bbf8eed1 VS	163	int mlx4_cq_resize(struct mlx4_dev dev, struct mlx4_cq cq,
bbf8eed1 VS	164	int entries, struct mlx4_mtt *mtt);
3fdcb97f	165
225c7b1f	166	#endif /* MLX4_CQ_H */