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MdeModulePkg/NonDiscoverablePciDeviceDxe: add support for non-coherent DMA

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Add support for non-coherent DMA, either by performing explicit cache
maintenance when DMA mappings are aligned to the CPU's DMA buffer alignment,
or by bounce buffering via uncached mappings otherwise.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Tested-by: Marcin Wojtas <mw@semihalf.com>
Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>
This commit is contained in:
Ard Biesheuvel
2016-12-09 15:04:34 +00:00
parent aaa61995af
commit 16296a126c
4 changed files with 367 additions and 7 deletions
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2
MdeModulePkg/Bus/Pci/NonDiscoverablePciDeviceDxe/NonDiscoverablePciDeviceDxe.inf
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@@ -32,6 +32,7 @@
[LibraryClasses]
BaseMemoryLib
DebugLib
DxeServicesTableLib
MemoryAllocationLib
UefiBootServicesTableLib
UefiDriverEntryPoint
@@ -40,6 +41,7 @@
[Protocols]
gEfiPciIoProtocolGuid ## BY_START
gEdkiiNonDiscoverableDeviceProtocolGuid ## TO_START
gEfiCpuArchProtocolGuid ## CONSUMES
[Guids]
gEdkiiNonDiscoverableAhciDeviceGuid