// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
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/*
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*
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* (C) COPYRIGHT 2014-2016, 2018, 2020-2022 ARM Limited. All rights reserved.
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*
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* This program is free software and is provided to you under the terms of the
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* GNU General Public License version 2 as published by the Free Software
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* Foundation, and any use by you of this program is subject to the terms
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* of such GNU license.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you can access it online at
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* http://www.gnu.org/licenses/gpl-2.0.html.
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*
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*/
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#include "backend/gpu/mali_kbase_cache_policy_backend.h"
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#include <device/mali_kbase_device.h>
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/**
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* kbasep_amba_register_present() - Check AMBA_<> register is present
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* in the GPU.
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* @kbdev: Device pointer
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*
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* Note: Only for arch version 12.x.1 onwards.
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*
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* Return: true if AMBA_FEATURES/ENABLE registers are present.
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*/
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static bool kbasep_amba_register_present(struct kbase_device *kbdev)
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{
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return (ARCH_MAJOR_REV_REG(kbdev->gpu_props.props.raw_props.gpu_id) >=
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GPU_ID2_ARCH_MAJOR_REV_MAKE(12, 1));
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}
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void kbase_cache_set_coherency_mode(struct kbase_device *kbdev,
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u32 mode)
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{
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kbdev->current_gpu_coherency_mode = mode;
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if (kbasep_amba_register_present(kbdev)) {
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u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
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val = AMBA_ENABLE_COHERENCY_PROTOCOL_SET(val, mode);
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kbase_reg_write(kbdev, AMBA_ENABLE, val);
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} else
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kbase_reg_write(kbdev, COHERENCY_ENABLE, mode);
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}
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u32 kbase_cache_get_coherency_features(struct kbase_device *kbdev)
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{
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u32 coherency_features;
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if (kbasep_amba_register_present(kbdev))
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coherency_features =
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kbase_reg_read(kbdev, GPU_CONTROL_REG(AMBA_FEATURES));
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else
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coherency_features = kbase_reg_read(
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kbdev, GPU_CONTROL_REG(COHERENCY_FEATURES));
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return coherency_features;
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}
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void kbase_amba_set_memory_cache_support(struct kbase_device *kbdev,
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bool enable)
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{
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if (kbasep_amba_register_present(kbdev)) {
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u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
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val = AMBA_ENABLE_MEMORY_CACHE_SUPPORT_SET(val, enable);
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kbase_reg_write(kbdev, AMBA_ENABLE, val);
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} else {
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WARN(1, "memory_cache_support not supported");
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}
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}
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void kbase_amba_set_invalidate_hint(struct kbase_device *kbdev, bool enable)
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{
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if (kbasep_amba_register_present(kbdev)) {
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u32 val = kbase_reg_read(kbdev, AMBA_ENABLE);
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val = AMBA_ENABLE_INVALIDATE_HINT_SET(val, enable);
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kbase_reg_write(kbdev, AMBA_ENABLE, val);
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} else {
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WARN(1, "invalidate_hint not supported");
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}
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}
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