[deliverable/linux.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 <uapi/linux/if_ether.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;
	union {
		struct {
			__be16	rlid;
			__be16  status;
			u8      ipv6_ext_mask;
			u8      badfcs_enc;
		};
		u8  smac[ETH_ALEN];
	};
	__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_L2_TUNNEL_IPOK		= 1 << 31,
	MLX4_CQE_VLAN_PRESENT_MASK	= 1 << 29,
	MLX4_CQE_L2_TUNNEL		= 1 << 27,
	MLX4_CQE_L2_TUNNEL_CSUM		= 1 << 26,
	MLX4_CQE_L2_TUNNEL_IPV4		= 1 << 25,

	MLX4_CQE_QPN_MASK		= 0xffffff,
	MLX4_CQE_VID_MASK		= 0xfff,
};

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>
297e0dad	37	#include <uapi/linux/if_ether.h>
225c7b1f RD	38
	39	#include <linux/mlx4/device.h>
	40	#include <linux/mlx4/doorbell.h>
	41
	42	struct mlx4_cqe {
f780a9f1	43	__be32 vlan_my_qpn;
225c7b1f RD	44	__be32 immed_rss_invalid;
225c7b1f RD	45	__be32 g_mlpath_rqpn;
f780a9f1	46	__be16 sl_vid;
297e0dad MS	47	union {
	48	struct {
	49	__be16 rlid;
	50	__be16 status;
	51	u8 ipv6_ext_mask;
	52	u8 badfcs_enc;
	53	};
	54	u8 smac[ETH_ALEN];
	55	};
225c7b1f RD	56	__be32 byte_cnt;
	57	__be16 wqe_index;
	58	__be16 checksum;
f780a9f1	59	u8 reserved[3];
225c7b1f RD	60	u8 owner_sr_opcode;
	61	};
	62
	63	struct mlx4_err_cqe {
	64	__be32 my_qpn;
	65	u32 reserved1[5];
	66	__be16 wqe_index;
	67	u8 vendor_err_syndrome;
	68	u8 syndrome;
	69	u8 reserved2[3];
	70	u8 owner_sr_opcode;
	71	};
	72
ec693d47 AV	73	struct mlx4_ts_cqe {
	74	__be32 vlan_my_qpn;
	75	__be32 immed_rss_invalid;
	76	__be32 g_mlpath_rqpn;
	77	__be32 timestamp_hi;
	78	__be16 status;
	79	u8 ipv6_ext_mask;
	80	u8 badfcs_enc;
	81	__be32 byte_cnt;
	82	__be16 wqe_index;
	83	__be16 checksum;
	84	u8 reserved;
	85	__be16 timestamp_lo;
	86	u8 owner_sr_opcode;
	87	} __packed;
	88
f780a9f1	89	enum {
7ffdf726	90	MLX4_CQE_L2_TUNNEL_IPOK = 1 << 31,
f780a9f1	91	MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29,
7ffdf726 OG	92	MLX4_CQE_L2_TUNNEL = 1 << 27,
	93	MLX4_CQE_L2_TUNNEL_CSUM = 1 << 26,
	94	MLX4_CQE_L2_TUNNEL_IPV4 = 1 << 25,
	95
f780a9f1	96	MLX4_CQE_QPN_MASK = 0xffffff,
297e0dad	97	MLX4_CQE_VID_MASK = 0xfff,
f780a9f1 YP	98	};
f780a9f1 YP	99
225c7b1f RD	100	enum {
	101	MLX4_CQE_OWNER_MASK = 0x80,
	102	MLX4_CQE_IS_SEND_MASK = 0x40,
	103	MLX4_CQE_OPCODE_MASK = 0x1f
	104	};
	105
	106	enum {
	107	MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01,
	108	MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02,
	109	MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04,
	110	MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05,
	111	MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06,
	112	MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10,
	113	MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11,
	114	MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12,
	115	MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13,
	116	MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14,
	117	MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15,
	118	MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16,
	119	MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22,
	120	};
	121
8ff095ec	122	enum {
f780a9f1 YP	123	MLX4_CQE_STATUS_IPV4 = 1 << 6,
	124	MLX4_CQE_STATUS_IPV4F = 1 << 7,
	125	MLX4_CQE_STATUS_IPV6 = 1 << 8,
	126	MLX4_CQE_STATUS_IPV4OPT = 1 << 9,
	127	MLX4_CQE_STATUS_TCP = 1 << 10,
	128	MLX4_CQE_STATUS_UDP = 1 << 11,
	129	MLX4_CQE_STATUS_IPOK = 1 << 12,
	130	};
	131
	132	enum {
	133	MLX4_CQE_LLC = 1,
	134	MLX4_CQE_SNAP = 1 << 1,
	135	MLX4_CQE_BAD_FCS = 1 << 4,
8ff095ec EC	136	};
8ff095ec EC	137
225c7b1f RD	138	static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd,
	139	void __iomem *uar_page,
	140	spinlock_t *doorbell_lock)
	141	{
	142	__be32 doorbell[2];
	143	u32 sn;
	144	u32 ci;
	145
	146	sn = cq->arm_sn & 3;
	147	ci = cq->cons_index & 0xffffff;
	148
	149	*cq->arm_db = cpu_to_be32(sn << 28 \| cmd \| ci);
	150
	151	/*
	152	* Make sure that the doorbell record in host memory is
	153	* written before ringing the doorbell via PCI MMIO.
	154	*/
	155	wmb();
	156
	157	doorbell[0] = cpu_to_be32(sn << 28 \| cmd \| cq->cqn);
	158	doorbell[1] = cpu_to_be32(ci);
	159
	160	mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock);
	161	}
	162
	163	static inline void mlx4_cq_set_ci(struct mlx4_cq *cq)
	164	{
	165	*cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff);
	166	}
	167
	168	enum {
	169	MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24,
	170	MLX4_CQ_DB_REQ_NOT = 2 << 24
	171	};
	172
3fdcb97f EC	173	int mlx4_cq_modify(struct mlx4_dev dev, struct mlx4_cq cq,
3fdcb97f EC	174	u16 count, u16 period);
bbf8eed1 VS	175	int mlx4_cq_resize(struct mlx4_dev dev, struct mlx4_cq cq,
bbf8eed1 VS	176	int entries, struct mlx4_mtt *mtt);
3fdcb97f	177
225c7b1f	178	#endif /* MLX4_CQ_H */