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 vlan_my_qpn; 43 __be32 immed_rss_invalid; 44 __be32 g_mlpath_rqpn; 45 __be16 sl_vid; 46 __be16 rlid; 47 __be16 status; 48 u8 ipv6_ext_mask; 49 u8 badfcs_enc; 50 __be32 byte_cnt; 51 __be16 wqe_index; 52 __be16 checksum; 53 u8 reserved[3]; 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 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 83 enum { 84 MLX4_CQE_VLAN_PRESENT_MASK = 1 << 29, 85 MLX4_CQE_QPN_MASK = 0xffffff, 86 }; 87 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 }; 109 110 enum { 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, 124 }; 125 126 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 }; 160 161 int mlx4_cq_modify(struct mlx4_dev *dev, struct mlx4_cq *cq, 162 u16 count, u16 period); 163 int mlx4_cq_resize(struct mlx4_dev *dev, struct mlx4_cq *cq, 164 int entries, struct mlx4_mtt *mtt); 165 166 #endif /* MLX4_CQ_H */ 167