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

   1 /******************************************************************************
   2  *
   3  * This file is provided under a dual BSD/GPLv2 license.  When using or
   4  * redistributing this file, you may do so under either license.
   5  *
   6  * GPL LICENSE SUMMARY
   7  *
   8  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
   9  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  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  * The full GNU General Public License is included in this distribution
  21  * in the file called COPYING.
  22  *
  23  * Contact Information:
  24  *  Intel Linux Wireless <linuxwifi@intel.com>
  25  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  26  *
  27  * BSD LICENSE
  28  *
  29  * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  30  * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  31  * All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
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  37  *  * Redistributions of source code must retain the above copyright
  38  *    notice, this list of conditions and the following disclaimer.
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  40  *    notice, this list of conditions and the following disclaimer in
  41  *    the documentation and/or other materials provided with the
  42  *    distribution.
  43  *  * Neither the name Intel Corporation nor the names of its
  44  *    contributors may be used to endorse or promote products derived
  45  *    from this software without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  48  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  50  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  51  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  52  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  53  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  54  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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  56  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  57  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  58  *
  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 };