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// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
* (C) COPYRIGHT 2014-2016, 2018, 2020-2022 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.
*
*/
#include "backend/gpu/mali_kbase_cache_policy_backend.h"
#include <device/mali_kbase_device.h>
/**
* kbasep_amba_register_present() - Check AMBA_<> register is present
* in the GPU.
* @kbdev: Device pointer
*
* Note: Only for arch version 12.x.1 onwards.
*
* Return: true if AMBA_FEATURES/ENABLE registers are present.
*/
static bool kbasep_amba_register_present(struct kbase_device *kbdev)
{
return (ARCH_MAJOR_REV_REG(kbdev->gpu_props.props.raw_props.gpu_id) >=
GPU_ID2_ARCH_MAJOR_REV_MAKE(12, 1));
}
void kbase_cache_set_coherency_mode(struct kbase_device *kbdev,
u32 mode)
{
kbdev->current_gpu_coherency_mode = mode;
if (kbasep_amba_register_present(kbdev)) {
u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
val = AMBA_ENABLE_COHERENCY_PROTOCOL_SET(val, mode);
kbase_reg_write(kbdev, AMBA_ENABLE, val);
} else
kbase_reg_write(kbdev, COHERENCY_ENABLE, mode);
}
u32 kbase_cache_get_coherency_features(struct kbase_device *kbdev)
{
u32 coherency_features;
if (kbasep_amba_register_present(kbdev))
coherency_features =
kbase_reg_read(kbdev, GPU_CONTROL_REG(AMBA_FEATURES));
else
coherency_features = kbase_reg_read(
kbdev, GPU_CONTROL_REG(COHERENCY_FEATURES));
return coherency_features;
}
void kbase_amba_set_memory_cache_support(struct kbase_device *kbdev,
bool enable)
{
if (kbasep_amba_register_present(kbdev)) {
u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
val = AMBA_ENABLE_MEMORY_CACHE_SUPPORT_SET(val, enable);
kbase_reg_write(kbdev, AMBA_ENABLE, val);
} else {
WARN(1, "memory_cache_support not supported");
}
}
void kbase_amba_set_invalidate_hint(struct kbase_device *kbdev, bool enable)
{
if (kbasep_amba_register_present(kbdev)) {
u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
val = AMBA_ENABLE_INVALIDATE_HINT_SET(val, enable);
kbase_reg_write(kbdev, AMBA_ENABLE, val);
} else {
WARN(1, "invalidate_hint not supported");
}
}
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