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iommu/mediatek-v1: Support COMPILE_TEST

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Add COMPILE_TEST support to Mediatek v1 so I have less chance of
breaking it again in future. This just needs the ARM dma-iommu API
stubbing out for now.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/a8d7c0b4393b360ce556f5f15e229d1e2fe73c83.1741702556.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Robin Murphy 2025-03-11 14:15:56 +00:00 • committed by Joerg Roedel
parent 73d2f10957
commit ba40f9dc95
2 changed files with 11 additions and 3 deletions
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3
drivers/iommu/Kconfig
View file

@ -482,8 +482,7 @@ config MTK_IOMMU
config MTK_IOMMU_V1
tristate "MediaTek IOMMU Version 1 (M4U gen1) Support"
depends on ARM
depends on ARCH_MEDIATEK || COMPILE_TEST
depends on (ARCH_MEDIATEK && ARM) || COMPILE_TEST
select ARM_DMA_USE_IOMMU
select IOMMU_API
select MEMORY

11
drivers/iommu/mtk_iommu_v1.c
View file

@ -27,11 +27,20 @@
#include <linux/spinlock.h>
#include <linux/string_choices.h>
#include <asm/barrier.h>
#include <asm/dma-iommu.h>
#include <dt-bindings/memory/mtk-memory-port.h>
#include <dt-bindings/memory/mt2701-larb-port.h>
#include <soc/mediatek/smi.h>
#if defined(CONFIG_ARM)
#include <asm/dma-iommu.h>
#else
#define arm_iommu_create_mapping(...) NULL
#define arm_iommu_attach_device(...) -ENODEV
struct dma_iommu_mapping {
struct iommu_domain *domain;
};
#endif
#define REG_MMU_PT_BASE_ADDR 0x000
#define F_ALL_INVLD 0x2