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 my_qpn; 43 __be32 immed_rss_invalid; 44 __be32 g_mlpath_rqpn; 45 u8 sl; 46 u8 reserved1; 47 __be16 rlid; 48 u32 reserved2; 49 __be32 byte_cnt; 50 __be16 wqe_index; 51 __be16 checksum; 52 u8 reserved3[3]; 53 u8 owner_sr_opcode; 54 }; 55 56 struct mlx4_err_cqe { 57 __be32 my_qpn; 58 u32 reserved1[5]; 59 __be16 wqe_index; 60 u8 vendor_err_syndrome; 61 u8 syndrome; 62 u8 reserved2[3]; 63 u8 owner_sr_opcode; 64 }; 65 66 enum { 67 MLX4_CQE_OWNER_MASK = 0x80, 68 MLX4_CQE_IS_SEND_MASK = 0x40, 69 MLX4_CQE_OPCODE_MASK = 0x1f 70 }; 71 72 enum { 73 MLX4_CQE_SYNDROME_LOCAL_LENGTH_ERR = 0x01, 74 MLX4_CQE_SYNDROME_LOCAL_QP_OP_ERR = 0x02, 75 MLX4_CQE_SYNDROME_LOCAL_PROT_ERR = 0x04, 76 MLX4_CQE_SYNDROME_WR_FLUSH_ERR = 0x05, 77 MLX4_CQE_SYNDROME_MW_BIND_ERR = 0x06, 78 MLX4_CQE_SYNDROME_BAD_RESP_ERR = 0x10, 79 MLX4_CQE_SYNDROME_LOCAL_ACCESS_ERR = 0x11, 80 MLX4_CQE_SYNDROME_REMOTE_INVAL_REQ_ERR = 0x12, 81 MLX4_CQE_SYNDROME_REMOTE_ACCESS_ERR = 0x13, 82 MLX4_CQE_SYNDROME_REMOTE_OP_ERR = 0x14, 83 MLX4_CQE_SYNDROME_TRANSPORT_RETRY_EXC_ERR = 0x15, 84 MLX4_CQE_SYNDROME_RNR_RETRY_EXC_ERR = 0x16, 85 MLX4_CQE_SYNDROME_REMOTE_ABORTED_ERR = 0x22, 86 }; 87 88 static inline void mlx4_cq_arm(struct mlx4_cq *cq, u32 cmd, 89 void __iomem *uar_page, 90 spinlock_t *doorbell_lock) 91 { 92 __be32 doorbell[2]; 93 u32 sn; 94 u32 ci; 95 96 sn = cq->arm_sn & 3; 97 ci = cq->cons_index & 0xffffff; 98 99 *cq->arm_db = cpu_to_be32(sn << 28 | cmd | ci); 100 101 /* 102 * Make sure that the doorbell record in host memory is 103 * written before ringing the doorbell via PCI MMIO. 104 */ 105 wmb(); 106 107 doorbell[0] = cpu_to_be32(sn << 28 | cmd | cq->cqn); 108 doorbell[1] = cpu_to_be32(ci); 109 110 mlx4_write64(doorbell, uar_page + MLX4_CQ_DOORBELL, doorbell_lock); 111 } 112 113 static inline void mlx4_cq_set_ci(struct mlx4_cq *cq) 114 { 115 *cq->set_ci_db = cpu_to_be32(cq->cons_index & 0xffffff); 116 } 117 118 enum { 119 MLX4_CQ_DB_REQ_NOT_SOL = 1 << 24, 120 MLX4_CQ_DB_REQ_NOT = 2 << 24 121 }; 122 123 #endif /* MLX4_CQ_H */ 124