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/*
* Copyright (C) 2010-2011 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained from Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/**
* @file ump_ukk_wrappers.c
* Defines the wrapper functions which turn Linux IOCTL calls into _ukk_ calls
*/
#include <asm/uaccess.h> /* user space access */
#include "ump_osk.h"
#include "ump_uk_types.h"
#include "ump_ukk.h"
#include "ump_kernel_common.h"
/*
* IOCTL operation; Negotiate version of IOCTL API
*/
int ump_get_api_version_wrapper(u32 __user * argument, struct ump_session_data * session_data)
{
_ump_uk_api_version_s version_info;
_mali_osk_errcode_t err;
/* Sanity check input parameters */
if (NULL == argument || NULL == session_data)
{
MSG_ERR(("NULL parameter in ump_ioctl_get_api_version()\n"));
return -ENOTTY;
}
/* Copy the user space memory to kernel space (so we safely can read it) */
if (0 != copy_from_user(&version_info, argument, sizeof(version_info)))
{
MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n"));
return -EFAULT;
}
version_info.ctx = (void*) session_data;
err = _ump_uku_get_api_version( &version_info );
if( _MALI_OSK_ERR_OK != err )
{
MSG_ERR(("_ump_uku_get_api_version() failed in ump_ioctl_get_api_version()\n"));
return map_errcode(err);
}
version_info.ctx = NULL;
/* Copy ouput data back to user space */
if (0 != copy_to_user(argument, &version_info, sizeof(version_info)))
{
MSG_ERR(("copy_to_user() failed in ump_ioctl_get_api_version()\n"));
return -EFAULT;
}
return 0; /* success */
}
/*
* IOCTL operation; Release reference to specified UMP memory.
*/
int ump_release_wrapper(u32 __user * argument, struct ump_session_data * session_data)
{
_ump_uk_release_s release_args;
_mali_osk_errcode_t err;
/* Sanity check input parameters */
if (NULL == session_data)
{
MSG_ERR(("NULL parameter in ump_ioctl_release()\n"));
return -ENOTTY;
}
/* Copy the user space memory to kernel space (so we safely can read it) */
if (0 != copy_from_user(&release_args, argument, sizeof(release_args)))
{
MSG_ERR(("copy_from_user() in ump_ioctl_get_api_version()\n"));
return -EFAULT;
}
release_args.ctx = (void*) session_data;
err = _ump_ukk_release( &release_args );
if( _MALI_OSK_ERR_OK != err )
{
MSG_ERR(("_ump_ukk_release() failed in ump_ioctl_release()\n"));
return map_errcode(err);
}
return 0; /* success */
}
/*
* IOCTL operation; Return size for specified UMP memory.
*/
int ump_size_get_wrapper(u32 __user * argument, struct ump_session_data * session_data)
{
_ump_uk_size_get_s user_interaction;
_mali_osk_errcode_t err;
/* Sanity check input parameters */
if (NULL == argument || NULL == session_data)
{
MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
return -ENOTTY;
}
if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction)))
{
MSG_ERR(("copy_from_user() in ump_ioctl_size_get()\n"));
return -EFAULT;
}
user_interaction.ctx = (void *) session_data;
err = _ump_ukk_size_get( &user_interaction );
if( _MALI_OSK_ERR_OK != err )
{
MSG_ERR(("_ump_ukk_size_get() failed in ump_ioctl_size_get()\n"));
return map_errcode(err);
}
user_interaction.ctx = NULL;
if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction)))
{
MSG_ERR(("copy_to_user() failed in ump_ioctl_size_get()\n"));
return -EFAULT;
}
return 0; /* success */
}
/*
* IOCTL operation; Do cache maintenance on specified UMP memory.
*/
int ump_msync_wrapper(u32 __user * argument, struct ump_session_data * session_data)
{
_ump_uk_msync_s user_interaction;
/* Sanity check input parameters */
if (NULL == argument || NULL == session_data)
{
MSG_ERR(("NULL parameter in ump_ioctl_size_get()\n"));
return -ENOTTY;
}
if (0 != copy_from_user(&user_interaction, argument, sizeof(user_interaction)))
{
MSG_ERR(("copy_from_user() in ump_ioctl_msync()\n"));
return -EFAULT;
}
user_interaction.ctx = (void *) session_data;
_ump_ukk_msync( &user_interaction );
user_interaction.ctx = NULL;
if (0 != copy_to_user(argument, &user_interaction, sizeof(user_interaction)))
{
MSG_ERR(("copy_to_user() failed in ump_ioctl_msync()\n"));
return -EFAULT;
}
return 0; /* success */
}
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