drivers/net/wireless/intel/iwlwifi/mvm/debugfs.h

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
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   6  * GPL LICENSE SUMMARY
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   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  29  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  30  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
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  59  *****************************************************************************/
  60
  61 #define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
  62 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  63         .read = iwl_dbgfs_##name##_read,                                \
  64         .open = simple_open,                                            \
  65         .llseek = generic_file_llseek,                                  \
  66 }
  67
  68 #define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                \
  69 static ssize_t _iwl_dbgfs_##name##_write(struct file *file,             \
  70                                          const char __user *user_buf,   \
  71                                          size_t count, loff_t *ppos)    \
  72 {                                                                       \
  73         argtype *arg = file->private_data;                              \
  74         char buf[buflen] = {};                                          \
  75         size_t buf_size = min(count, sizeof(buf) -  1);                 \
  76                                                                         \
  77         if (copy_from_user(buf, user_buf, buf_size))                    \
  78                 return -EFAULT;                                         \
  79                                                                         \
  80         return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos);      \
  81 }                                                                       \
  82
  83 #define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype)         \
  84 MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                        \
  85 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  86         .write = _iwl_dbgfs_##name##_write,                             \
  87         .read = iwl_dbgfs_##name##_read,                                \
  88         .open = simple_open,                                            \
  89         .llseek = generic_file_llseek,                                  \
  90 };
  91
  92 #define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype)              \
  93 MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                        \
  94 static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  95         .write = _iwl_dbgfs_##name##_write,                             \
  96         .open = simple_open,                                            \
  97         .llseek = generic_file_llseek,                                  \
  98 };