From 6778948f9de86c3cfaf36725a7c87dcff9ba247f Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 08:20:59 +0000
Subject: [PATCH] kernel_5.10 no rt
---
kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c | 63 ++++++++++++++++++++++++++++++-
1 files changed, 61 insertions(+), 2 deletions(-)
diff --git a/kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c b/kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c
index e542ccf..7c0abba 100644
--- a/kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c
+++ b/kernel/drivers/gpu/arm/bifrost/backend/gpu/mali_kbase_cache_policy_backend.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note
/*
*
- * (C) COPYRIGHT 2014-2016, 2018, 2020-2021 ARM Limited. All rights reserved.
+ * (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
@@ -22,12 +22,71 @@
#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 (kbase_hw_has_feature(kbdev, BASE_HW_FEATURE_COHERENCY_REG))
+ 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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