drivers/infiniband/hw/hfi1/debugfs.h

   1 #ifndef _HFI1_DEBUGFS_H
   2 #define _HFI1_DEBUGFS_H
   3 /*
   4  * Copyright(c) 2015, 2016 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
  50 struct hfi1_ibdev;
  51 #ifdef CONFIG_DEBUG_FS
  52 void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd);
  53 void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd);
  54 void hfi1_dbg_init(void);
  55 void hfi1_dbg_exit(void);
  56
  57 #ifdef CONFIG_FAULT_INJECTION
  58 #include <linux/fault-inject.h>
  59 struct fault_opcode {
  60         struct fault_attr attr;
  61         struct dentry *dir;
  62         bool fault_by_opcode;
  63         u64 n_rxfaults[256];
  64         u64 n_txfaults[256];
  65         u8 opcode;
  66         u8 mask;
  67 };
  68
  69 struct fault_packet {
  70         struct fault_attr attr;
  71         struct dentry *dir;
  72         bool fault_by_packet;
  73         u64 n_faults;
  74 };
  75
  76 bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, u32 opcode, bool rx);
  77 bool hfi1_dbg_fault_packet(struct hfi1_packet *packet);
  78 bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd);
  79 #else
  80 static inline bool hfi1_dbg_fault_packet(struct hfi1_packet *packet)
  81 {
  82         return false;
  83 }
  84
  85 static inline bool hfi1_dbg_fault_opcode(struct rvt_qp *qp,
  86                                          u32 opcode, bool rx)
  87 {
  88         return false;
  89 }
  90
  91 static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
  92 {
  93         return false;
  94 }
  95 #endif
  96
  97 #else
  98 static inline void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
  99 {
 100 }
 101
 102 static inline void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
 103 {
 104 }
 105
 106 static inline void hfi1_dbg_init(void)
 107 {
 108 }
 109
 110 static inline void hfi1_dbg_exit(void)
 111 {
 112 }
 113
 114 static inline bool hfi1_dbg_fault_packet(struct hfi1_packet *packet)
 115 {
 116         return false;
 117 }
 118
 119 static inline bool hfi1_dbg_fault_opcode(struct rvt_qp *qp,
 120                                          u32 opcode, bool rx)
 121 {
 122         return false;
 123 }
 124
 125 static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd)
 126 {
 127         return false;
 128 }
 129 #endif
 130
 131 #endif                          /* _HFI1_DEBUGFS_H */