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MdeModulePkg/PciBus: Add IOMMU support.

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If IOMMU protocol is installed, PciBus need call IOMMU
to set access attribute for the PCI device in Map/Ummap.

Only after the access attribute is set, the PCI device can
access the DMA memory.

Cc: Ruiyu Ni <ruiyu.ni@intel.com>
Cc: Leo Duran <leo.duran@amd.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>

Previous patch Tested-by: Brijesh Singh <brijesh.singh@amd.com>
Previous patch Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Leo Duran <leo.duran@amd.com>
This commit is contained in:
Jiewen Yao
2017-04-29 16:57:54 +08:00
parent c15da8eb35
commit 11a6cc5bda
4 changed files with 54 additions and 4 deletions
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1
MdeModulePkg/Bus/Pci/PciBusDxe/PciBusDxe.inf
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@@ -95,6 +95,7 @@
gEfiPciRootBridgeIoProtocolGuid ## TO_START
gEfiIncompatiblePciDeviceSupportProtocolGuid ## SOMETIMES_CONSUMES
gEfiLoadFile2ProtocolGuid ## SOMETIMES_PRODUCES
gEdkiiIoMmuProtocolGuid ## SOMETIMES_CONSUMES
[FeaturePcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdPciBusHotplugDeviceSupport ## CONSUMES