mirror of
https://github.com/torvalds/linux.git
synced 2024-11-21 19:41:42 +00:00
946e719ce6
Prepare for MT8188. In MT8188, the register which enables IOMMU for INFRA masters are in the secure world for security concerns, therefore we add a SMC command for INFRA masters to enable IOMMU in ATF. Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com> Signed-off-by: Yong Wu <yong.wu@mediatek.com> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> Reviewed-by: Alexandre Mergnat <amergnat@baylibre.com> Link: https://lore.kernel.org/r/20230602090227.7264-5-yong.wu@mediatek.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
31 lines
615 B
C
31 lines
615 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/*
|
|
* Copyright (c) 2015-2016 MediaTek Inc.
|
|
* Author: Yong Wu <yong.wu@mediatek.com>
|
|
*/
|
|
#ifndef MTK_IOMMU_SMI_H
|
|
#define MTK_IOMMU_SMI_H
|
|
|
|
#include <linux/bitops.h>
|
|
#include <linux/device.h>
|
|
|
|
#if IS_ENABLED(CONFIG_MTK_SMI)
|
|
|
|
enum iommu_atf_cmd {
|
|
IOMMU_ATF_CMD_CONFIG_SMI_LARB, /* For mm master to en/disable iommu */
|
|
IOMMU_ATF_CMD_CONFIG_INFRA_IOMMU, /* For infra master to enable iommu */
|
|
IOMMU_ATF_CMD_MAX,
|
|
};
|
|
|
|
#define MTK_SMI_MMU_EN(port) BIT(port)
|
|
|
|
struct mtk_smi_larb_iommu {
|
|
struct device *dev;
|
|
unsigned int mmu;
|
|
unsigned char bank[32];
|
|
};
|
|
|
|
#endif
|
|
|
|
#endif
|