From bfdd231374181254742c5e2faef0bef2d30c0ee4 Mon Sep 17 00:00:00 2001 From: Yunfei Wang Date: Thu, 30 Jun 2022 17:29:25 +0800 Subject: iommu/io-pgtable-arm-v7s: Add a quirk to allow pgtable PA up to 35bit Single memory zone feature will remove ZONE_DMA32 and ZONE_DMA and cause pgtable PA size larger than 32bit. Since Mediatek IOMMU hardware support at most 35bit PA in pgtable, so add a quirk to allow the PA of pgtables support up to bit35. Signed-off-by: Ning Li Signed-off-by: Yunfei Wang Reviewed-by: Robin Murphy Acked-by: Will Deacon Link: https://lore.kernel.org/r/20220630092927.24925-2-yf.wang@mediatek.com Signed-off-by: Joerg Roedel --- include/linux/io-pgtable.h | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) (limited to 'include/linux') diff --git a/include/linux/io-pgtable.h b/include/linux/io-pgtable.h index 86af6f0a00a2..ca98aeadcc80 100644 --- a/include/linux/io-pgtable.h +++ b/include/linux/io-pgtable.h @@ -74,17 +74,22 @@ struct io_pgtable_cfg { * to support up to 35 bits PA where the bit32, bit33 and bit34 are * encoded in the bit9, bit4 and bit5 of the PTE respectively. * + * IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT: (ARM v7s format) MediaTek IOMMUs + * extend the translation table base support up to 35 bits PA, the + * encoding format is same with IO_PGTABLE_QUIRK_ARM_MTK_EXT. + * * IO_PGTABLE_QUIRK_ARM_TTBR1: (ARM LPAE format) Configure the table * for use in the upper half of a split address space. * * IO_PGTABLE_QUIRK_ARM_OUTER_WBWA: Override the outer-cacheability * attributes set in the TCR for a non-coherent page-table walker. */ - #define IO_PGTABLE_QUIRK_ARM_NS BIT(0) - #define IO_PGTABLE_QUIRK_NO_PERMS BIT(1) - #define IO_PGTABLE_QUIRK_ARM_MTK_EXT BIT(3) - #define IO_PGTABLE_QUIRK_ARM_TTBR1 BIT(5) - #define IO_PGTABLE_QUIRK_ARM_OUTER_WBWA BIT(6) + #define IO_PGTABLE_QUIRK_ARM_NS BIT(0) + #define IO_PGTABLE_QUIRK_NO_PERMS BIT(1) + #define IO_PGTABLE_QUIRK_ARM_MTK_EXT BIT(3) + #define IO_PGTABLE_QUIRK_ARM_MTK_TTBR_EXT BIT(4) + #define IO_PGTABLE_QUIRK_ARM_TTBR1 BIT(5) + #define IO_PGTABLE_QUIRK_ARM_OUTER_WBWA BIT(6) unsigned long quirks; unsigned long pgsize_bitmap; unsigned int ias; -- cgit v1.2.3