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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2014-2023 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 license.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
/*
* Base kernel disjoint events helper functions
*/
#include <mali_kbase.h>
void kbase_disjoint_init(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
/* disjoiont_event is already zero-initialized by kzalloc. */
}
/* increment the disjoint event count */
void kbase_disjoint_event(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
atomic_inc(&kbdev->disjoint_event.count);
}
/* increment the state and the event counter */
void kbase_disjoint_state_up(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
atomic_inc(&kbdev->disjoint_event.state);
kbase_disjoint_event(kbdev);
}
/* decrement the state */
void kbase_disjoint_state_down(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
KBASE_DEBUG_ASSERT(atomic_read(&kbdev->disjoint_event.state) > 0);
kbase_disjoint_event(kbdev);
atomic_dec(&kbdev->disjoint_event.state);
}
/* increments the count only if the state is > 0 */
void kbase_disjoint_event_potential(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
if (atomic_read(&kbdev->disjoint_event.state))
kbase_disjoint_event(kbdev);
}
u32 kbase_disjoint_event_get(struct kbase_device *kbdev)
{
KBASE_DEBUG_ASSERT(kbdev != NULL);
return (u32)atomic_read(&kbdev->disjoint_event.count);
}
KBASE_EXPORT_TEST_API(kbase_disjoint_event_get);
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