Commit 9e3489e0 authored by Yong Wu's avatar Yong Wu Committed by Will Deacon
Browse files

iommu/mediatek: Add mt8192 support 



Add mt8192 iommu support.

Signed-off-by: default avatarYong Wu <yong.wu@mediatek.com>
Reviewed-by: default avatarTomasz Figa <tfiga@chromium.org>
Link: https://lore.kernel.org/r/20210111111914.22211-33-yong.wu@mediatek.com


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent 23357572

drivers/iommu/mtk_iommu.c

+22 −0
Original line number Diff line number Diff line
@@ -177,6 +177,16 @@ static const struct mtk_iommu_iova_region single_domain[] = { 
	{.iova_base = 0,		.size = SZ_4G},

};



static const struct mtk_iommu_iova_region mt8192_multi_dom[] = {

	{ .iova_base = 0x0,		.size = SZ_4G},		/* disp: 0 ~ 4G */

	#if IS_ENABLED(CONFIG_ARCH_DMA_ADDR_T_64BIT)

	{ .iova_base = SZ_4G,		.size = SZ_4G},		/* vdec: 4G ~ 8G */

	{ .iova_base = SZ_4G * 2,	.size = SZ_4G},		/* CAM/MDP: 8G ~ 12G */

	{ .iova_base = 0x240000000ULL,	.size = 0x4000000},	/* CCU0 */

	{ .iova_base = 0x244000000ULL,	.size = 0x4000000},	/* CCU1 */

	#endif

};



/*

 * There may be 1 or 2 M4U HWs, But we always expect they are in the same domain

 * for the performance.
@@ -1038,12 +1048,24 @@ static const struct mtk_iommu_plat_data mt8183_data = { 
	.larbid_remap = {{0}, {4}, {5}, {6}, {7}, {2}, {3}, {1}},

};



static const struct mtk_iommu_plat_data mt8192_data = {

	.m4u_plat       = M4U_MT8192,

	.flags          = HAS_BCLK | HAS_SUB_COMM | OUT_ORDER_WR_EN |

			  WR_THROT_EN | IOVA_34_EN,

	.inv_sel_reg    = REG_MMU_INV_SEL_GEN2,

	.iova_region    = mt8192_multi_dom,

	.iova_region_nr = ARRAY_SIZE(mt8192_multi_dom),

	.larbid_remap   = {{0}, {1}, {4, 5}, {7}, {2}, {9, 11, 19, 20},

			   {0, 14, 16}, {0, 13, 18, 17}},

};



static const struct of_device_id mtk_iommu_of_ids[] = {

	{ .compatible = "mediatek,mt2712-m4u", .data = &mt2712_data},

	{ .compatible = "mediatek,mt6779-m4u", .data = &mt6779_data},

	{ .compatible = "mediatek,mt8167-m4u", .data = &mt8167_data},

	{ .compatible = "mediatek,mt8173-m4u", .data = &mt8173_data},

	{ .compatible = "mediatek,mt8183-m4u", .data = &mt8183_data},

	{ .compatible = "mediatek,mt8192-m4u", .data = &mt8192_data},

	{}

};

drivers/iommu/mtk_iommu.h

+1 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ enum mtk_iommu_plat { 
	M4U_MT8167,

	M4U_MT8173,

	M4U_MT8183,

	M4U_MT8192,

};



struct mtk_iommu_iova_region;