1/* 2 3 * Copyright (c) 2007 Cisco Systems, Inc. All rights reserved. 4 * 5 * This software is available to you under a choice of one of two 6 * licenses. You may choose to be licensed under the terms of the GNU 7 * General Public License (GPL) Version 2, available from the file 8 * COPYING in the main directory of this source tree, or the 9 * OpenIB.org BSD license below: 10 * 11 * Redistribution and use in source and binary forms, with or 12 * without modification, are permitted provided that the following 13 * conditions are met: 14 * 15 * - Redistributions of source code must retain the above 16 * copyright notice, this list of conditions and the following 17 * disclaimer. 18 * 19 * - Redistributions in binary form must reproduce the above 20 * copyright notice, this list of conditions and the following 21 * disclaimer in the documentation and/or other materials 22 * provided with the distribution. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 31 * SOFTWARE. 32 33 */ 34#ifndef MLX4_CQ_H 35#define MLX4_CQ_H 36 37#include <linux/mlx4/device.h> 38 39#include <asm/byteorder.h> 40#include <asm/atomic.h> 41 42#include <linux/mlx4/doorbell.h> 43/* 44 #include <linux/types.h> 45 46 #include <linux/mlx4/device.h> 47 #include <linux/mlx4/doorbell.h> 48 */ 49struct mlx4_cqe { 50 __be32 vlan_my_qpn; 51 __be32 immed_rss_invalid; 52 __be32 g_mlpath_rqpn; 53 union { 54 struct { 55 union { 56 struct { 57 __be16 sl_vid; 58 __be16 rlid; 59 }; 60 __be32 timestamp_16_47; 61 }; 62 __be16 status; 63 u8 ipv6_ext_mask; 64 u8 badfcs_enc; 65 }; 66 struct { 67 __be16 reserved1; 68 u8 smac[6]; 69 }; 70 }; 71 __be32 byte_cnt; 72 __be16 wqe_index; 73 __be16 checksum; 74 u8 reserved2[1]; 75 __be16 timestamp_0_15; 76 u8 owner_sr_opcode; 77} __packed; 78 79struct mlx4_err_cqe { 80 __be32 my_qpn; 81 u32 reserved1[5]; 82 __be16 wqe_index; 83 u8 vendor_err_syndrome; 84 u8 syndrome; 85 u8 reserved2[3]; 86 u8 owner_sr_opcode; 87}; 88/* 89 struct mlx4_ts_cqe { 90 __be32 vlan_my_qpn; 91 __be32 immed_rss_invalid; 92 __be32 g_mlpath_rqpn; 93 __be32 timestamp_hi; 94 __be16 status; 95 u8 ipv6_ext_mask; 96 u8 badfcs_enc; 97 __be32 byte_cnt; 98 __be16 wqe_index; 99 __be16 checksum; 100 u8 reserved; 101 __be16 timestamp_lo; 102 u8 owner_sr_opcode; 103 } __packed; 104 */ 105enum { 106 MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29, 107 MLX4_CQE_QPN_MASK = 0xffffff, 108 MLX4_CQE_VID_MASK = 0xfff, 109}; 110 111enum { 112 MLX4_CQE_OWNER_MASK = 0x80, 113 MLX4_CQE_IS_SEND_MASK = 0x40, 114 MLX4_CQE_OPCODE_MASK = 0x1f 115}; 116 117enum { 118 MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, 119 MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, 120 MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, 121 MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, 122 MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06, 123 MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10, 124 MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, 125 MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, 126 MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, 127 MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, 128 MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, 129 MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, 130 MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, 131}; 132 133enum { 134 MLX4_CQE_STATUS_IPV4 = 1 << 6, 135 MLX4_CQE_STATUS_IPV4F = 1 << 7, 136 MLX4_CQE_STATUS_IPV6 = 1 << 8, 137 MLX4_CQE_STATUS_IPV4OPT = 1 << 9, 138 MLX4_CQE_STATUS_TCP = 1 << 10, 139 MLX4_CQE_STATUS_UDP = 1 << 11, 140 MLX4_CQE_STATUS_IPOK = 1 << 12, 141}; 142 143enum { 144 MLX4_CQE_LLC = 1, MLX4_CQE_SNAP = 1 << 1, MLX4_CQE_BAD_FCS = 1 << 4, 145}; 146 147static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd, 148 u8 /*__iomem*/*uar_page) { 149 __be32 doorbell[2]; 150 u32 sn; 151 u32 ci; 152 153 sn = cq->arm_sn & 3; 154 ci = cq->cons_index & 0xffffff; 155 156 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci); 157 158 /** Make sure that the doorbell record in host memory is 159 * written before ringing the doorbell via PCI MMIO.*/ 160 161 wmb(); 162 163 doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn); 164 doorbell[1] = cpu_to_be32(ci); 165 166 mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL); 167} 168 169static inline void mlx4_cq_set_ci(struct mlx4_cq *cq) { 170 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); 171} 172 173enum { 174 MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24, MLX4_CQ_DB_REQ_NOT = 2 << 24 175}; 176/* 177 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq, 178 u16 count, u16 period); 179 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, 180 int entries, struct mlx4_mtt *mtt); 181 */ 182int mlx4_cq_ignore_overrun(struct mlx4_dev *dev, struct mlx4_cq *cq); 183 184#endif /*MLX4_CQ_H*/ 185