104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/*
|
|
* 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.
|
|
*/
|
|
#include <linux/fs.h> /* file system operations */
|
|
#include <asm/uaccess.h> /* user space access */
|
|
|
|
#include "mali_ukk.h"
|
|
#include "mali_osk.h"
|
|
#include "mali_kernel_common.h"
|
|
#include "mali_kernel_session_manager.h"
|
|
#include "mali_ukk_wrappers.h"
|
|
|
|
int pp_start_job_wrapper(struct mali_session_data *session_data, _mali_uk_pp_start_job_s __user *uargs)
|
|
{
|
|
_mali_uk_pp_start_job_s kargs;
|
|
_mali_osk_errcode_t err;
|
|
|
|
MALI_CHECK_NON_NULL(uargs, -EINVAL);
|
|
MALI_CHECK_NON_NULL(session_data, -EINVAL);
|
|
|
|
if (!access_ok(VERIFY_WRITE, uargs, sizeof(_mali_uk_pp_start_job_s)))
|
|
{
|
|
return -EFAULT;
|
|
}
|
|
|
|
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_pp_start_job_s))) return -EFAULT;
|
|
|
|
kargs.ctx = session_data;
|
|
err = _mali_ukk_pp_start_job(&kargs);
|
|
if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
|
|
|
|
if (0 != put_user(kargs.returned_user_job_ptr, &uargs->returned_user_job_ptr) ||
|
|
0 != put_user(kargs.status, &uargs->status))
|
|
{
|
|
/*
|
|
* If this happens, then user space will not know that the job was actually started,
|
|
* and if we return a queued job, then user space will still think that one is still queued.
|
|
* This will typically lead to a deadlock in user space.
|
|
* This could however only happen if user space deliberately passes a user buffer which
|
|
* passes the access_ok(VERIFY_WRITE) check, but isn't fully writable at the time of copy_to_user().
|
|
* The official Mali driver will never attempt to do that, and kernel space should not be affected.
|
|
* That is why we do not bother to do a complex rollback in this very very very rare case.
|
|
*/
|
|
return -EFAULT;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pp_abort_job_wrapper(struct mali_session_data *session_data, _mali_uk_pp_abort_job_s __user *uargs)
|
|
{
|
|
_mali_uk_pp_abort_job_s kargs;
|
|
|
|
MALI_CHECK_NON_NULL(uargs, -EINVAL);
|
|
MALI_CHECK_NON_NULL(session_data, -EINVAL);
|
|
|
|
if (0 != copy_from_user(&kargs, uargs, sizeof(_mali_uk_pp_abort_job_s))) return -EFAULT;
|
|
|
|
kargs.ctx = session_data;
|
|
_mali_ukk_pp_abort_job(&kargs);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pp_get_number_of_cores_wrapper(struct mali_session_data *session_data, _mali_uk_get_pp_number_of_cores_s __user *uargs)
|
|
{
|
|
_mali_uk_get_pp_number_of_cores_s kargs;
|
|
_mali_osk_errcode_t err;
|
|
|
|
MALI_CHECK_NON_NULL(uargs, -EINVAL);
|
|
MALI_CHECK_NON_NULL(session_data, -EINVAL);
|
|
|
|
kargs.ctx = session_data;
|
|
err = _mali_ukk_get_pp_number_of_cores(&kargs);
|
|
if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
|
|
|
|
if (0 != put_user(kargs.number_of_cores, &uargs->number_of_cores)) return -EFAULT;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int pp_get_core_version_wrapper(struct mali_session_data *session_data, _mali_uk_get_pp_core_version_s __user *uargs)
|
|
{
|
|
_mali_uk_get_pp_core_version_s kargs;
|
|
_mali_osk_errcode_t err;
|
|
|
|
MALI_CHECK_NON_NULL(uargs, -EINVAL);
|
|
MALI_CHECK_NON_NULL(session_data, -EINVAL);
|
|
|
|
kargs.ctx = session_data;
|
|
err = _mali_ukk_get_pp_core_version(&kargs);
|
|
if (_MALI_OSK_ERR_OK != err) return map_errcode(err);
|
|
|
|
if (0 != put_user(kargs.version, &uargs->version)) return -EFAULT;
|
|
|
|
return 0;
|
|
}
|