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authorSuravee Suthikulpanit <suravee.suthikulpanit@amd.com>2020-12-07 03:19:20 -0600
committerWill Deacon <will@kernel.org>2020-12-07 11:00:24 +0000
commit4165bf015ba9454f45beaad621d16c516d5c5afe (patch)
tree1b525baa0e3c424fff2f35d14a24382f3a0ad47b /drivers/iommu/amd
parentd76b42e92780c3587c1a998a3a943b501c137553 (diff)
iommu/amd: Set DTE[IntTabLen] to represent 512 IRTEs
According to the AMD IOMMU spec, the commit 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries") also requires the interrupt table length (IntTabLen) to be set to 9 (power of 2) in the device table mapping entry (DTE). Fixes: 73db2fc595f3 ("iommu/amd: Increase interrupt remapping table limit to 512 entries") Reported-by: Jerry Snitselaar <jsnitsel@redhat.com> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com> Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com> Link: https://lore.kernel.org/r/20201207091920.3052-1-suravee.suthikulpanit@amd.com Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/iommu/amd')
-rw-r--r--drivers/iommu/amd/amd_iommu_types.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/amd/amd_iommu_types.h b/drivers/iommu/amd/amd_iommu_types.h
index 89647700bab2..494b42a31b7a 100644
--- a/drivers/iommu/amd/amd_iommu_types.h
+++ b/drivers/iommu/amd/amd_iommu_types.h
@@ -257,7 +257,7 @@
#define DTE_IRQ_REMAP_INTCTL_MASK (0x3ULL << 60)
#define DTE_IRQ_TABLE_LEN_MASK (0xfULL << 1)
#define DTE_IRQ_REMAP_INTCTL (2ULL << 60)
-#define DTE_IRQ_TABLE_LEN (8ULL << 1)
+#define DTE_IRQ_TABLE_LEN (9ULL << 1)
#define DTE_IRQ_REMAP_ENABLE 1ULL
#define PAGE_MODE_NONE 0x00