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/*
* Copyright (C) 2010-2012 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.
*/
#include <linux/fs.h> /* file system operations */
#include <asm/uaccess.h> /* user space access */
#include <linux/slab.h>
#include "mali_ukk.h"
#include "mali_osk.h"
#include "mali_kernel_common.h"
#include "mali_session.h"
#include "mali_ukk_wrappers.h"
int profiling_start_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_start_s __user *uargs)
{
_mali_uk_profiling_start_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_profiling_start_s)))
{
return -EFAULT;
}
kargs.ctx = session_data;
err = _mali_ukk_profiling_start(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
if (0 != put_user(kargs.limit, &uargs->limit))
{
return -EFAULT;
}
return 0;
}
int profiling_add_event_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_add_event_s __user *uargs)
{
_mali_uk_profiling_add_event_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_profiling_add_event_s)))
{
return -EFAULT;
}
kargs.ctx = session_data;
err = _mali_ukk_profiling_add_event(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
return 0;
}
int profiling_stop_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_stop_s __user *uargs)
{
_mali_uk_profiling_stop_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
kargs.ctx = session_data;
err = _mali_ukk_profiling_stop(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
if (0 != put_user(kargs.count, &uargs->count))
{
return -EFAULT;
}
return 0;
}
int profiling_get_event_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_get_event_s __user *uargs)
{
_mali_uk_profiling_get_event_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
if (0 != get_user(kargs.index, &uargs->index))
{
return -EFAULT;
}
kargs.ctx = session_data;
err = _mali_ukk_profiling_get_event(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
kargs.ctx = NULL; /* prevent kernel address to be returned to user space */
if (0 != copy_to_user(uargs, &kargs, sizeof(_mali_uk_profiling_get_event_s)))
{
return -EFAULT;
}
return 0;
}
int profiling_clear_wrapper(struct mali_session_data *session_data, _mali_uk_profiling_clear_s __user *uargs)
{
_mali_uk_profiling_clear_s kargs;
_mali_osk_errcode_t err;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
kargs.ctx = session_data;
err = _mali_ukk_profiling_clear(&kargs);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
return 0;
}
int profiling_report_sw_counters_wrapper(struct mali_session_data *session_data, _mali_uk_sw_counters_report_s __user *uargs)
{
_mali_uk_sw_counters_report_s kargs;
_mali_osk_errcode_t err;
u32 *counter_buffer;
MALI_CHECK_NON_NULL(uargs, -EINVAL);
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_sw_counters_report_s)))
{
return -EFAULT;
}
/* make sure that kargs.num_counters is [at least somewhat] sane */
if (kargs.num_counters > 10000) {
MALI_DEBUG_PRINT(1, ("User space attempted to allocate too many counters.\n"));
return -EINVAL;
}
counter_buffer = (u32*)kmalloc(sizeof(u32) * kargs.num_counters, GFP_KERNEL);
if (NULL == counter_buffer)
{
return -ENOMEM;
}
if (0 != copy_from_user(counter_buffer, kargs.counters, sizeof(u32) * kargs.num_counters))
{
kfree(counter_buffer);
return -EFAULT;
}
kargs.ctx = session_data;
kargs.counters = counter_buffer;
err = _mali_ukk_sw_counters_report(&kargs);
kfree(counter_buffer);
if (_MALI_OSK_ERR_OK != err)
{
return map_errcode(err);
}
return 0;
}
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