1 #ifndef _HFI1_FAULT_H 2 #define _HFI1_FAULT_H 3 /* 4 * Copyright(c) 2018 Intel Corporation. 5 * 6 * This file is provided under a dual BSD/GPLv2 license. When using or 7 * redistributing this file, you may do so under either license. 8 * 9 * GPL LICENSE SUMMARY 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of version 2 of the GNU General Public License as 13 * published by the Free Software Foundation. 14 * 15 * This program is distributed in the hope that it will be useful, but 16 * WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * General Public License for more details. 19 * 20 * BSD LICENSE 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 26 * - Redistributions of source code must retain the above copyright 27 * notice, this list of conditions and the following disclaimer. 28 * - Redistributions in binary form must reproduce the above copyright 29 * notice, this list of conditions and the following disclaimer in 30 * the documentation and/or other materials provided with the 31 * distribution. 32 * - Neither the name of Intel Corporation nor the names of its 33 * contributors may be used to endorse or promote products derived 34 * from this software without specific prior written permission. 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 47 * 48 */ 49 #include <linux/fault-inject.h> 50 #include <linux/dcache.h> 51 #include <linux/bitops.h> 52 #include <linux/kernel.h> 53 #include <rdma/rdma_vt.h> 54 55 #include "hfi.h" 56 57 struct hfi1_ibdev; 58 59 #if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS) 60 struct fault { 61 struct fault_attr attr; 62 struct dentry *dir; 63 u64 n_rxfaults[(1U << BITS_PER_BYTE)]; 64 u64 n_txfaults[(1U << BITS_PER_BYTE)]; 65 u64 fault_skip; 66 u64 skip; 67 u64 fault_skip_usec; 68 unsigned long skip_usec; 69 unsigned long opcodes[(1U << BITS_PER_BYTE) / BITS_PER_LONG]; 70 bool enable; 71 bool suppress_err; 72 bool opcode; 73 u8 direction; 74 }; 75 76 int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd); 77 bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode); 78 bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet); 79 bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd); 80 void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd); 81 82 #else 83 84 static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd) 85 { 86 return 0; 87 } 88 89 static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet) 90 { 91 return false; 92 } 93 94 static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, 95 u32 opcode) 96 { 97 return false; 98 } 99 100 static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd) 101 { 102 return false; 103 } 104 105 static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd) 106 { 107 } 108 #endif 109 #endif /* _HFI1_FAULT_H */ 110