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hw/arm/smmu-common: Fix devfn computation in smmu_iommu_mr

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smmu_iommu_mr() aims at returning the IOMMUMemoryRegion corresponding
to a given sid. The function extracts both the PCIe bus number and
the devfn to return this data. Current computation of devfn is wrong
as it only returns the PCIe function instead of slot | function.

Fixes 32cfd7f39e ("hw/arm/smmuv3: Cache/invalidate config data")

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1530775623-32399-1-git-send-email-eric.auger@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Eric Auger 2018-07-09 14:51:34 +01:00 committed by Peter Maydell
parent a98ff0ec2b
commit b78aae9bb6
2 changed files with 2 additions and 1 deletions
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2
hw/arm/smmu-common.c
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@ -351,7 +351,7 @@ IOMMUMemoryRegion *smmu_iommu_mr(SMMUState *s, uint32_t sid)
bus_n = PCI_BUS_NUM(sid);
smmu_bus = smmu_find_smmu_pcibus(s, bus_n);
if (smmu_bus) {
devfn = sid & 0x7;
devfn = SMMU_PCI_DEVFN(sid);
smmu = smmu_bus->pbdev[devfn];
if (smmu) {
return &smmu->iommu;

1
include/hw/arm/smmu-common.h
View File

@ -24,6 +24,7 @@
#define SMMU_PCI_BUS_MAX 256
#define SMMU_PCI_DEVFN_MAX 256
#define SMMU_PCI_DEVFN(sid) (sid & 0xFF)
#define SMMU_MAX_VA_BITS 48