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authorAlexey Kardashevskiy <aik@ozlabs.ru>2014-05-27 15:36:32 +1000
committerAlexander Graf <agraf@suse.de>2014-06-16 13:24:39 +0200
commitcca7fad5765251fece44cd230156a101867522dd (patch)
tree6c7ff9d97ccd3acb87ec32d5915b0e1433690d84 /include/hw/pci-host
parentda6ccee4184482b45a2cb562c7373639792fc58d (diff)
spapr_pci: spapr_iommu: Make DMA window a subregion
Currently the default DMA window is represented by a single MemoryRegion. However there can be more than just one window so we need a "root" memory region to be separated from the actual DMA window(s). This introduces a "root" IOMMU memory region and adds a subregion for the default DMA 32bit window. Following patches will add other subregion(s). This initializes a default DMA window subregion size to the guest RAM size as this window can be switched into "bypass" mode which implements direct DMA mapping. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'include/hw/pci-host')
-rw-r--r--include/hw/pci-host/spapr.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/hw/pci-host/spapr.h b/include/hw/pci-host/spapr.h
index 0f428a1af9..fcb62137a2 100644
--- a/include/hw/pci-host/spapr.h
+++ b/include/hw/pci-host/spapr.h
@@ -64,6 +64,7 @@ struct sPAPRPHBState {
uint64_t dma_window_size;
sPAPRTCETable *tcet;
AddressSpace iommu_as;
+ MemoryRegion iommu_root;
struct spapr_pci_lsi {
uint32_t irq;