Commit d54bd7f8 authored by Peter Xu's avatar Peter Xu Committed by Michael S. Tsirkin
Browse files

intel_iommu: set IR bit for ECAP register 



Enable IR in IOMMU Extended Capability register.

Signed-off-by: default avatarPeter Xu <peterx@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent b7910472

hw/i386/intel_iommu.c

+6 −0
Original line number Diff line number Diff line
@@ -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);

hw/i386/intel_iommu_internal.h

+2 −0
Original line number Diff line number Diff line
@@ -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 */