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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2019-2021 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.
*
*/
#ifndef _KBASE_CSF_TIMEOUT_H_
#define _KBASE_CSF_TIMEOUT_H_
struct kbase_device;
/**
* kbase_csf_timeout_init - Initialize the progress timeout.
*
* @kbdev: Instance of a GPU platform device that implements a CSF interface.
* Must be zero-initialized.
*
* The progress timeout is the number of GPU clock cycles allowed to elapse
* before the driver terminates a GPU command queue group in which a task is
* making no forward progress on an endpoint (e.g. a shader core). This function
* determines the initial value and also creates a sysfs file to allow the
* timeout to be reconfigured later.
*
* Reconfigures the global firmware interface to enable the current timeout.
*
* Return: 0 on success, or negative on failure.
*/
int kbase_csf_timeout_init(struct kbase_device *kbdev);
/**
* kbase_csf_timeout_term - Terminate the progress timeout.
*
* @kbdev: Instance of a GPU platform device that implements a CSF interface.
*
* Removes the sysfs file which allowed the timeout to be reconfigured.
* Does nothing if called on a zero-initialized object.
*/
void kbase_csf_timeout_term(struct kbase_device *kbdev);
/**
* kbase_csf_timeout_get - get the current global progress timeout.
*
* @kbdev: Instance of a GPU platform device that implements a CSF interface.
*
* Return: the maximum number of GPU cycles that is allowed to elapse without
* forward progress before the driver terminates a GPU command queue
* group.
*/
u64 kbase_csf_timeout_get(struct kbase_device *const kbdev);
#endif /* _KBASE_CSF_TIMEOUT_H_ */
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