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b3e5eee765
The larb-id may be remapped in the smi-common, this means the
larb-id reported in the mtk_iommu_isr isn't the real larb-id,
Take mt8183 as a example:
M4U
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---------------------------------------------
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-0-----7-----5-----6-----1-----2------3-----4- <- Id remapped
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larb0 larb1 IPU0 IPU1 larb4 larb5 larb6 CCU
disp vdec img cam venc img cam
As above, larb0 connects with the id 0 in smi-common.
larb1 connects with the id 7 in smi-common.
...
If the larb-id reported in the isr is 7, actually it's larb1(vdec).
In order to output the right larb-id in the isr, we add a larb-id
remapping relationship in this patch.
If there is no this larb-id remapping in some SoCs, use the linear
mapping array instead.
This also is a preparing patch for mt8183.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
90 lines
1.9 KiB
C
90 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2015-2016 MediaTek Inc.
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* Author: Honghui Zhang <honghui.zhang@mediatek.com>
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*/
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#ifndef _MTK_IOMMU_H_
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#define _MTK_IOMMU_H_
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#include <linux/clk.h>
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#include <linux/component.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <linux/io-pgtable.h>
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#include <linux/iommu.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <soc/mediatek/smi.h>
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struct mtk_iommu_suspend_reg {
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u32 standard_axi_mode;
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u32 dcm_dis;
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u32 ctrl_reg;
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u32 int_control0;
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u32 int_main_control;
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u32 ivrp_paddr;
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};
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enum mtk_iommu_plat {
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M4U_MT2701,
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M4U_MT2712,
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M4U_MT8173,
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};
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struct mtk_iommu_plat_data {
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enum mtk_iommu_plat m4u_plat;
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bool has_4gb_mode;
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/* HW will use the EMI clock if there isn't the "bclk". */
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bool has_bclk;
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unsigned char larbid_remap[MTK_LARB_NR_MAX];
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};
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struct mtk_iommu_domain;
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struct mtk_iommu_data {
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void __iomem *base;
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int irq;
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struct device *dev;
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struct clk *bclk;
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phys_addr_t protect_base; /* protect memory base */
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struct mtk_iommu_suspend_reg reg;
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struct mtk_iommu_domain *m4u_dom;
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struct iommu_group *m4u_group;
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struct mtk_smi_iommu smi_imu; /* SMI larb iommu info */
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bool enable_4GB;
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bool tlb_flush_active;
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struct iommu_device iommu;
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const struct mtk_iommu_plat_data *plat_data;
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struct list_head list;
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};
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static inline int compare_of(struct device *dev, void *data)
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{
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return dev->of_node == data;
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}
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static inline void release_of(struct device *dev, void *data)
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{
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of_node_put(data);
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}
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static inline int mtk_iommu_bind(struct device *dev)
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{
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struct mtk_iommu_data *data = dev_get_drvdata(dev);
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return component_bind_all(dev, &data->smi_imu);
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}
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static inline void mtk_iommu_unbind(struct device *dev)
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{
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struct mtk_iommu_data *data = dev_get_drvdata(dev);
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component_unbind_all(dev, &data->smi_imu);
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}
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#endif
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