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| author |   Chengci.Xu <chengci.xu@mediatek.com> | 2022-08-17 20:46:07 +0800 |
|---|---|---|
| committer |   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> | 2022-08-30 20:54:05 +0300 |
| commit | 4e508b259ed02f5fa608cdd83b817a7f49c22271 (patch) | |
| tree | fe616ab4fcbaa42cd115da667be36d1e8e39582b /include/linux/soc | |
| parent | memory: mtk-smi: Add return value for configure port function (diff) | |
| download | wireguard-linux-4e508b259ed02f5fa608cdd83b817a7f49c22271.tar.xz wireguard-linux-4e508b259ed02f5fa608cdd83b817a7f49c22271.zip | |
memory: mtk-smi: Add enable IOMMU SMC command for MM master
For concerns about security, the register to enable/disable IOMMU of
SMI LARB should only be configured in secure world. Thus, we add some
SMC command for multimedia master to enable/disable MM IOMMU in ATF by
setting the register of SMI LARB. This function is prepared for MT8188.
Signed-off-by: Chengci.Xu <chengci.xu@mediatek.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20220817124608.10062-4-chengci.xu@mediatek.com
Diffstat (limited to 'include/linux/soc')
| -rw-r--r-- | include/linux/soc/mediatek/mtk_sip_svc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/soc/mediatek/mtk_sip_svc.h b/include/linux/soc/mediatek/mtk_sip_svc.h index 082398e0cfb1..0761128b4354 100644 --- a/include/linux/soc/mediatek/mtk_sip_svc.h +++ b/include/linux/soc/mediatek/mtk_sip_svc.h @@ -22,4 +22,7 @@ ARM_SMCCC_CALL_VAL(ARM_SMCCC_FAST_CALL, MTK_SIP_SMC_CONVENTION, \ ARM_SMCCC_OWNER_SIP, fn_id) +/* IOMMU related SMC call */ +#define MTK_SIP_KERNEL_IOMMU_CONTROL MTK_SIP_SMC_CMD(0x514) + #endif |