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[Qemu-devel] [PATCH v9 06/25] intel_iommu: allow queued invalidation for
From: |
Peter Xu |
Subject: |
[Qemu-devel] [PATCH v9 06/25] intel_iommu: allow queued invalidation for IR |
Date: |
Mon, 13 Jun 2016 21:09:22 +0800 |
Queued invalidation is required for IR. This patch add basic support for
interrupt cache invalidate requests. Since we currently have no IR cache
implemented yet, we can just skip all interrupt cache invalidation
requests for now.
Signed-off-by: Peter Xu <address@hidden>
---
hw/i386/intel_iommu.c | 9 +++++++++
hw/i386/intel_iommu_internal.h | 2 ++
2 files changed, 11 insertions(+)
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index b487224..b170f97 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -1404,6 +1404,15 @@ static bool vtd_process_inv_desc(IntelIOMMUState *s)
}
break;
+ case VTD_INV_DESC_IEC:
+ VTD_DPRINTF(INV, "Interrupt Entry Cache Invalidation "
+ "not implemented yet");
+ /*
+ * Since currently we do not cache interrupt entries, we can
+ * just mark this descriptor as "good" and move on.
+ */
+ break;
+
default:
VTD_DPRINTF(GENERAL, "error: unkonw Invalidation Descriptor type "
"hi 0x%"PRIx64 " lo 0x%"PRIx64 " type %"PRIu8,
diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h
index e5f514c..b648e69 100644
--- a/hw/i386/intel_iommu_internal.h
+++ b/hw/i386/intel_iommu_internal.h
@@ -286,6 +286,8 @@ typedef struct VTDInvDesc VTDInvDesc;
#define VTD_INV_DESC_TYPE 0xf
#define VTD_INV_DESC_CC 0x1 /* Context-cache Invalidate Desc */
#define VTD_INV_DESC_IOTLB 0x2
+#define VTD_INV_DESC_IEC 0x4 /* Interrupt Entry Cache
+ Invalidate Descriptor */
#define VTD_INV_DESC_WAIT 0x5 /* Invalidation Wait Descriptor */
#define VTD_INV_DESC_NONE 0 /* Not an Invalidate Descriptor */
--
2.4.11
- [Qemu-devel] [PATCH v9 00/25] IOMMU: Enable interrupt remapping for Intel IOMMU, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 01/25] x86-iommu: introduce parent class, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 03/25] x86-iommu: q35: generalize find_add_as(), Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 02/25] x86-iommu: provide x86_iommu_get_default, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 04/25] x86-iommu: introduce "intremap" property, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 06/25] intel_iommu: allow queued invalidation for IR,
Peter Xu <=
- [Qemu-devel] [PATCH v9 05/25] acpi: enable INTR for DMAR report structure, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 07/25] intel_iommu: set IR bit for ECAP register, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 08/25] acpi: add DMAR scope definition for root IOAPIC, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 10/25] intel_iommu: handle interrupt remap enable, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 09/25] intel_iommu: define interrupt remap table addr register, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 12/25] intel_iommu: add IR translation faults defines, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 11/25] intel_iommu: define several structs for IOMMU IR, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 13/25] intel_iommu: Add support for PCI MSI remap, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 14/25] q35: ioapic: add support for emulated IOAPIC IR, Peter Xu, 2016/06/13
- [Qemu-devel] [PATCH v9 15/25] ioapic: introduce ioapic_entry_parse() helper, Peter Xu, 2016/06/13