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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2021-2022 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_PBHA_H
#define _KBASE_PBHA_H
#include <mali_kbase.h>
/**
* kbasep_pbha_supported - check whether PBHA registers are
* available
*
* @kbdev: Device pointer
*
* Should only be used in mali_kbase_pbha* files - thus the
* kbase[p] prefix.
*
* Return: True if pbha is supported, false otherwise
*/
bool kbasep_pbha_supported(struct kbase_device *kbdev);
/**
* kbase_pbha_record_settings - record PBHA settings to be applied when
* L2 is powered down
*
* @kbdev: Device pointer
* @runtime: true if it's called at runtime and false if it's called on init.
* @id: memory access source ID
* @read_setting: Read setting
* @write_setting: Write setting
*
* Return: 0 on success, otherwise error code.
*/
int kbase_pbha_record_settings(struct kbase_device *kbdev, bool runtime,
unsigned int id, unsigned int read_setting,
unsigned int write_setting);
/**
* kbase_pbha_write_settings - write recorded PBHA settings to GPU
* registers
*
* @kbdev: Device pointer
*
* Only valid to call this function when L2 is powered down, otherwise
* this will not affect PBHA settings.
*/
void kbase_pbha_write_settings(struct kbase_device *kbdev);
/**
* kbase_pbha_read_dtb - read PBHA settings from DTB and record it to be
* applied when L2 is powered down
*
* @kbdev: Device pointer
*
* Return: 0 on success, otherwise error code.
*/
int kbase_pbha_read_dtb(struct kbase_device *kbdev);
#endif /* _KBASE_PBHA_H */
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