linux/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.h
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   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 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
  23 * USA
  24 *
  25 * The full GNU General Public License is included in this distribution
  26 * in the file called COPYING.
  27 *
  28 * Contact Information:
  29 *  Intel Linux Wireless <linuxwifi@intel.com>
  30 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  31 *
  32 * BSD LICENSE
  33 *
  34 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
  35 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
  36 * All rights reserved.
  37 *
  38 * Redistribution and use in source and binary forms, with or without
  39 * modification, are permitted provided that the following conditions
  40 * are met:
  41 *
  42 *  * Redistributions of source code must retain the above copyright
  43 *    notice, this list of conditions and the following disclaimer.
  44 *  * Redistributions in binary form must reproduce the above copyright
  45 *    notice, this list of conditions and the following disclaimer in
  46 *    the documentation and/or other materials provided with the
  47 *    distribution.
  48 *  * Neither the name Intel Corporation nor the names of its
  49 *    contributors may be used to endorse or promote products derived
  50 *    from this software without specific prior written permission.
  51 *
  52 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  53 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  54 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  55 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  56 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  57 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  58 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  59 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  60 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  61 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  62 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  63 *
  64 *****************************************************************************/
  65
  66#define MVM_DEBUGFS_READ_FILE_OPS(name)                                 \
  67static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  68        .read = iwl_dbgfs_##name##_read,                                \
  69        .open = simple_open,                                            \
  70        .llseek = generic_file_llseek,                                  \
  71}
  72
  73#define MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                \
  74static ssize_t _iwl_dbgfs_##name##_write(struct file *file,             \
  75                                         const char __user *user_buf,   \
  76                                         size_t count, loff_t *ppos)    \
  77{                                                                       \
  78        argtype *arg = file->private_data;                              \
  79        char buf[buflen] = {};                                          \
  80        size_t buf_size = min(count, sizeof(buf) -  1);                 \
  81                                                                        \
  82        if (copy_from_user(buf, user_buf, buf_size))                    \
  83                return -EFAULT;                                         \
  84                                                                        \
  85        return iwl_dbgfs_##name##_write(arg, buf, buf_size, ppos);      \
  86}                                                                       \
  87
  88#define _MVM_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype)         \
  89MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                        \
  90static const struct file_operations iwl_dbgfs_##name##_ops = {          \
  91        .write = _iwl_dbgfs_##name##_write,                             \
  92        .read = iwl_dbgfs_##name##_read,                                \
  93        .open = simple_open,                                            \
  94        .llseek = generic_file_llseek,                                  \
  95};
  96
  97#define _MVM_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype)              \
  98MVM_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype)                        \
  99static const struct file_operations iwl_dbgfs_##name##_ops = {          \
 100        .write = _iwl_dbgfs_##name##_write,                             \
 101        .open = simple_open,                                            \
 102        .llseek = generic_file_llseek,                                  \
 103};
 104