diff options
| author | Peter Xu <peterx@redhat.com> | 2016-07-14 13:56:16 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2016-07-20 19:30:27 +0300 |
| commit | d54bd7f80a5cf7dc5242f745d4c9542c822a81f3 (patch) | |
| tree | 898bc1e3f20aef72e5342adbf9906e8d2223d657 /hw | |
| parent | b79104722fc77974a222929f5590c3bea2941dd7 (diff) | |
| download | qemu-d54bd7f80a5cf7dc5242f745d4c9542c822a81f3.tar.gz | |
intel_iommu: set IR bit for ECAP register
Enable IR in IOMMU Extended Capability register.
Signed-off-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/intel_iommu.c | 6 | ||||
| -rw-r--r-- | hw/i386/intel_iommu_internal.h | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index 26e322a484..9c7a08424f 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -1956,6 +1956,8 @@ VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn) */ static void vtd_init(IntelIOMMUState *s) { + X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s); + memset(s->csr, 0, DMAR_REG_SIZE); memset(s->wmask, 0, DMAR_REG_SIZE); memset(s->w1cmask, 0, DMAR_REG_SIZE); @@ -1977,6 +1979,10 @@ static void vtd_init(IntelIOMMUState *s) VTD_CAP_SAGAW | VTD_CAP_MAMV | VTD_CAP_PSI | VTD_CAP_SLLPS; s->ecap = VTD_ECAP_QI | VTD_ECAP_IRO; + if (x86_iommu->intr_supported) { + s->ecap |= VTD_ECAP_IR; + } + vtd_reset_context_cache(s); vtd_reset_iotlb(s); diff --git a/hw/i386/intel_iommu_internal.h b/hw/i386/intel_iommu_internal.h index b648e694cd..5b98a1143c 100644 --- a/hw/i386/intel_iommu_internal.h +++ b/hw/i386/intel_iommu_internal.h @@ -176,6 +176,8 @@ /* (offset >> 4) << 8 */ #define VTD_ECAP_IRO (DMAR_IOTLB_REG_OFFSET << 4) #define VTD_ECAP_QI (1ULL << 1) +/* Interrupt Remapping support */ +#define VTD_ECAP_IR (1ULL << 3) /* CAP_REG */ /* (offset >> 4) << 24 */ |