add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c
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@@ -1,7 +1,7 @@
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 // 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, 2020-2021 ARM Limited. All rights reserved.
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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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@@ -22,12 +22,71 @@
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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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+
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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 (kbase_hw_has_feature(kbdev, BASE_HW_FEATURE_COHERENCY_REG))
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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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+
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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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+
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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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+
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+	return coherency_features;
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+}
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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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+
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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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+
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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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+
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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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+
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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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+}