drivers/infiniband/hw/hfi1/debugfs.h

   1 #ifndef _HFI1_DEBUGFS_H
   2 #define _HFI1_DEBUGFS_H
   3 /*
   4  * Copyright(c) 2015, 2016, 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
  50 struct hfi1_ibdev;
  51
  52 #define DEBUGFS_SEQ_FILE_OPS(name) \
  53 static const struct seq_operations _##name##_seq_ops = { \
  54         .start = _##name##_seq_start, \
  55         .next  = _##name##_seq_next, \
  56         .stop  = _##name##_seq_stop, \
  57         .show  = _##name##_seq_show \
  58 }
  59
  60 #define DEBUGFS_SEQ_FILE_OPEN(name) \
  61 static int _##name##_open(struct inode *inode, struct file *s) \
  62 { \
  63         struct seq_file *seq; \
  64         int ret; \
  65         ret =  seq_open(s, &_##name##_seq_ops); \
  66         if (ret) \
  67                 return ret; \
  68         seq = s->private_data; \
  69         seq->private = inode->i_private; \
  70         return 0; \
  71 }
  72
  73 #define DEBUGFS_FILE_OPS(name) \
  74 static const struct file_operations _##name##_file_ops = { \
  75         .owner   = THIS_MODULE, \
  76         .open    = _##name##_open, \
  77         .read    = hfi1_seq_read, \
  78         .llseek  = hfi1_seq_lseek, \
  79         .release = seq_release \
  80 }
  81
  82
  83 ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size,
  84                       loff_t *ppos);
  85 loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence);
  86
  87 #ifdef CONFIG_DEBUG_FS
  88 void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd);
  89 void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd);
  90 void hfi1_dbg_init(void);
  91 void hfi1_dbg_exit(void);
  92
  93 #else
  94 static inline void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd)
  95 {
  96 }
  97
  98 static inline void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd)
  99 {
 100 }
 101
 102 static inline void hfi1_dbg_init(void)
 103 {
 104 }
 105
 106 static inline void hfi1_dbg_exit(void)
 107 {
 108 }
 109 #endif
 110
 111 #endif                          /* _HFI1_DEBUGFS_H */