Update the EmmcBlockIoPei driver to consume IOMMU_PPI to allocate DMA
buffer.
If no IOMMU_PPI exists, this driver still calls PEI service
to allocate DMA buffer, with assumption that DRAM==DMA.
This is a compatible change.
Cc: Jiewen Yao <jiewen.yao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Hao Wu <hao.a.wu@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>
This stack includes:
1. Dxe phase support by:
1) SdMmcPciHcDxe driver to consume PciIo and produce
SdMmcPassThru.
2) SdDxe driver to consume SdMmcPassThru to produce
BlkIo1/BlkIo2.
3) EmmcDxe driver to consume SdMmcPassThru to produce
BlkIo1/BlkIo2/SSP.
2. Pei phase support
1) SdBlockIoPei driver to consume SdMmcHostController
Ppi and produce VirutalBlkIo1&2.
2) EmmcBlockIoPei driver to consume SdMmcHostController
Ppi and produce VirutalBlkIo1&2.
3) SdMmcPciHcPei driver to produce SdMmcHostController
Ppi.
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Feng Tian <feng.tian@intel.com>
Reviewed-by: Hao Wu <hao.a.wu@intel.com>