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# Date Author Comment
53724ee5 10/04/2012 04:54 pm David Gibson

pseries: Rework implementation of TCE bypass

On the pseries machine the IOMMU (aka TCE tables) is always active for all
PCI and VIO devices. Mostly to simplify the SLOF firmware, we implement an
extension which allows the IOMMU to be temporarily disabled for certain...
eddeed26 10/04/2012 04:54 pm David Gibson

pseries: Reset emulated PCI TCE tables on system reset

The emulated PCI host bridge on the pseries machine incorporates an IOMMU
(PAPR TCE table). Currently the mappings in this IOMMU are not cleared
when we reset the system. This patch fixes this bug. To do this it adds...
5c4cbcf2 08/15/2012 08:43 pm Alexey Kardashevskiy

pseries dma: DMA window params added to PHB and DT population changed

Previously the only PCI bus supported was the emulated PCI bus with
fixed DMA window with start at 0 and size 1GB. As we are going to support
PCI pass through which DMA window properties are set by the host...
edded454 06/28/2012 12:33 am David Gibson

pseries: Implement IOMMU and DMA for PAPR PCI devices

Currently the pseries machine emulation does not support DMA for emulated
PCI devices, because the PAPR spec always requires a (guest visible,
paravirtualized) IOMMU which was not implemented. Now that we have...
ad0ebb91 06/28/2012 12:33 am David Gibson

pseries: Convert sPAPR TCEs to use generic IOMMU infrastructure

The pseries platform already contains an IOMMU implementation, since it is
essential for the platform's paravirtualized VIO devices. This IOMMU
support is currently built into the implementation of the VIO "bus" and...