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 <dev/mlx4/device.h> 39 #include <dev/mlx4/doorbell.h> 40 41 struct mlx4_cqe { 42 __be32 vlan_my_qpn; 43 __be32 immed_rss_invalid; 44 __be32 g_mlpath_rqpn; 45 union { 46 struct { 47 union { 48 struct { 49 __be16 sl_vid; 50 __be16 rlid; 51 }; 52 __be32 timestamp_16_47; 53 }; 54 __be16 status; 55 u8 ipv6_ext_mask; 56 u8 badfcs_enc; 57 }; 58 struct { 59 __be16 reserved1; 60 u8 smac[6]; 61 }; 62 }; 63 __be32 byte_cnt; 64 __be16 wqe_index; 65 __be16 checksum; 66 u8 reserved2[1]; 67 __be16 timestamp_0_15; 68 u8 owner_sr_opcode; 69 } __packed; 70 71 struct mlx4_err_cqe { 72 __be32 my_qpn; 73 u32 reserved1[5]; 74 __be16 wqe_index; 75 u8 vendor_err_syndrome; 76 u8 syndrome; 77 u8 reserved2[3]; 78 u8 owner_sr_opcode; 79 }; 80 81 struct mlx4_ts_cqe { 82 __be32 vlan_my_qpn; 83 __be32 immed_rss_invalid; 84 __be32 g_mlpath_rqpn; 85 __be32 timestamp_hi; 86 __be16 status; 87 u8 ipv6_ext_mask; 88 u8 badfcs_enc; 89 __be32 byte_cnt; 90 __be16 wqe_index; 91 __be16 checksum; 92 u8 reserved; 93 __be16 timestamp_lo; 94 u8 owner_sr_opcode; 95 } __packed; 96 97 enum { 98 MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29, 99 MLX4_CQE_QPN_MASK = 0xffffff, 100 MLX4_CQE_VID_MASK = 0xfff, 101 }; 102 103 enum { 104 MLX4_CQE_OWNER_MASK = 0x80, 105 MLX4_CQE_IS_SEND_MASK = 0x40, 106 MLX4_CQE_OPCODE_MASK = 0x1f 107 }; 108 109 enum { 110 MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, 111 MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, 112 MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, 113 MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, 114 MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06, 115 MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10, 116 MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, 117 MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, 118 MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, 119 MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, 120 MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, 121 MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, 122 MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, 123 }; 124 125 enum { 126 MLX4_CQE_STATUS_IPV4 = 1 << 6, 127 MLX4_CQE_STATUS_IPV4F = 1 << 7, 128 MLX4_CQE_STATUS_IPV6 = 1 << 8, 129 MLX4_CQE_STATUS_IPV4OPT = 1 << 9, 130 MLX4_CQE_STATUS_TCP = 1 << 10, 131 MLX4_CQE_STATUS_UDP = 1 << 11, 132 MLX4_CQE_STATUS_IPOK = 1 << 12, 133 }; 134 135 enum { 136 MLX4_CQE_LLC = 1, 137 MLX4_CQE_SNAP = 1 << 1, 138 MLX4_CQE_BAD_FCS = 1 << 4, 139 }; 140 141 static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd, 142 u8 __iomem *uar_page, 143 spinlock_t *doorbell_lock) 144 { 145 __be32 doorbell[2]; 146 u32 sn; 147 u32 ci; 148 149 sn = cq->arm_sn & 3; 150 ci = cq->cons_index & 0xffffff; 151 152 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci); 153 154 /* 155 * Make sure that the doorbell record in host memory is 156 * written before ringing the doorbell via PCI MMIO. 157 */ 158 wmb(); 159 160 doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn); 161 doorbell[1] = cpu_to_be32(ci); 162 163 mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock); 164 } 165 166 static inline void mlx4_cq_set_ci(struct mlx4_cq *cq) 167 { 168 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); 169 } 170 171 enum { 172 MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24, 173 MLX4_CQ_DB_REQ_NOT = 2 << 24 174 }; 175 176 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq, 177 u16 count, u16 period); 178 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, 179 int entries, struct mlx4_mtt *mtt); 180 int mlx4_cq_ignore_overrun(struct mlx4_dev *dev, struct mlx4_cq *cq); 181 #endif /* MLX4_CQ_H */ 182