diff options
Diffstat (limited to 'drivers/iommu/amd')
| -rw-r--r-- | drivers/iommu/amd/amd_iommu_types.h | 1 | ||||
| -rw-r--r-- | drivers/iommu/amd/init.c | 9 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h index 78b1c44bd6b5..320733e7d8b4 100644 --- a/drivers/iommu/amd/amd_iommu_types.h +++ b/drivers/iommu/amd/amd_iommu_types.h @@ -107,6 +107,7 @@ /* Extended Feature 2 Bits */ +#define FEATURE_SEVSNPIO_SUP BIT_ULL(1) #define FEATURE_SNPAVICSUP GENMASK_ULL(7, 5) #define FEATURE_SNPAVICSUP_GAM(x) \ (FIELD_GET(FEATURE_SNPAVICSUP, x) == 0x1) diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c index fdd6328bca89..4b2953418977 100644 --- a/drivers/iommu/amd/init.c +++ b/drivers/iommu/amd/init.c @@ -2261,6 +2261,9 @@ static void print_iommu_info(void) if (check_feature(FEATURE_SNP)) pr_cont(" SNP"); + if (check_feature2(FEATURE_SEVSNPIO_SUP)) + pr_cont(" SEV-TIO"); + pr_cont("\n"); } @@ -4028,4 +4031,10 @@ int amd_iommu_snp_disable(void) return 0; } EXPORT_SYMBOL_GPL(amd_iommu_snp_disable); + +bool amd_iommu_sev_tio_supported(void) +{ + return check_feature2(FEATURE_SEVSNPIO_SUP); +} +EXPORT_SYMBOL_GPL(amd_iommu_sev_tio_supported); #endif |