Clean up and reorder them according to the bit index. There is no
functional change.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
---
drivers/iommu/amd/amd_iommu_types.h | 13 +++++++------
drivers/iommu/amd/init.c | 10 +++++-----
2 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index 2ddbda3a4374..09df25779fe9 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -93,18 +93,19 @@
#define FEATURE_GA (1ULL<<7)
#define FEATURE_HE (1ULL<<8)
#define FEATURE_PC (1ULL<<9)
-#define FEATURE_GATS_SHIFT (12)
-#define FEATURE_GATS_MASK (3ULL)
#define FEATURE_GAM_VAPIC (1ULL<<21)
#define FEATURE_GIOSUP (1ULL<<48)
#define FEATURE_EPHSUP (1ULL<<50)
#define FEATURE_SNP (1ULL<<63)
-#define FEATURE_PASID_SHIFT 32
-#define FEATURE_PASID_MASK (0x1fULL << FEATURE_PASID_SHIFT)
+#define FEATURE_GATS_SHIFT 12
+#define FEATURE_GATS_MASK (0x03ULL << FEATURE_GATS_SHIFT)
-#define FEATURE_GLXVAL_SHIFT 14
-#define FEATURE_GLXVAL_MASK (0x03ULL << FEATURE_GLXVAL_SHIFT)
+#define FEATURE_GLX_SHIFT 14
+#define FEATURE_GLX_MASK (0x03ULL << FEATURE_GLX_SHIFT)
+
+#define FEATURE_PASMAX_SHIFT 32
+#define FEATURE_PASMAX_MASK (0x1FULL << FEATURE_PASMAX_SHIFT)
/* Extended Feature 2 Bits */
#define FEATURE_SNPAVICSUP_SHIFT 5
diff --git a/drivers/iommu/amd/init.c b/drivers/iommu/amd/init.c
index 886cf55e75e2..6a045a187971 100644
--- a/drivers/iommu/amd/init.c
+++ b/drivers/iommu/amd/init.c
@@ -310,7 +310,7 @@ static bool check_feature_on_all_iommus(u64 mask)
static inline int check_feature_gpt_level(void)
{
- return ((amd_iommu_efr >> FEATURE_GATS_SHIFT) & FEATURE_GATS_MASK);
+ return ((amd_iommu_efr && FEATURE_GATS_MASK) >> FEATURE_GATS_SHIFT);
}
/*
@@ -2039,16 +2039,16 @@ static int __init iommu_init_pci(struct amd_iommu *iommu)
u32 max_pasid;
u64 pasmax;
- pasmax = iommu->features & FEATURE_PASID_MASK;
- pasmax >>= FEATURE_PASID_SHIFT;
+ pasmax = iommu->features & FEATURE_PASMAX_MASK;
+ pasmax >>= FEATURE_PASMAX_SHIFT;
max_pasid = (1 << (pasmax + 1)) - 1;
amd_iommu_max_pasid = min(amd_iommu_max_pasid, max_pasid);
BUG_ON(amd_iommu_max_pasid & ~PASID_MASK);
- glxval = iommu->features & FEATURE_GLXVAL_MASK;
- glxval >>= FEATURE_GLXVAL_SHIFT;
+ glxval = iommu->features & FEATURE_GLX_MASK;
+ glxval >>= FEATURE_GLX_SHIFT;
if (amd_iommu_max_glx_val == -1)
amd_iommu_max_glx_val = glxval;
--
2.34.1
