diff options
Diffstat (limited to 'hw/ppc/spapr_pci.c')
| -rw-r--r-- | hw/ppc/spapr_pci.c | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c index 56944c1902..ba020320eb 100644 --- a/hw/ppc/spapr_pci.c +++ b/hw/ppc/spapr_pci.c @@ -610,6 +610,20 @@ static void spapr_phb_realize(DeviceState *dev, Error **errp) PCI_DEVFN(0, 0), PCI_NUM_PINS, TYPE_PCI_BUS); phb->bus = bus; + /* + * Initialize PHB address space. + * By default there will be at least one subregion for default + * 32bit DMA window. + * Later the guest might want to create another DMA window + * which will become another memory subregion. + */ + sprintf(namebuf, "%s.iommu-root", sphb->dtbusname); + + memory_region_init(&sphb->iommu_root, OBJECT(sphb), + namebuf, UINT64_MAX); + address_space_init(&sphb->iommu_as, &sphb->iommu_root, + sphb->dtbusname); + pci_setup_iommu(bus, spapr_pci_dma_iommu, sphb); pci_bus_set_route_irq_fn(bus, spapr_route_intx_pin_to_irq); @@ -648,8 +662,10 @@ static void spapr_phb_finish_realize(sPAPRPHBState *sphb, Error **errp) sphb->dtbusname); return ; } - address_space_init(&sphb->iommu_as, spapr_tce_get_iommu(sphb->tcet), - sphb->dtbusname); + + /* Register default 32bit DMA window */ + memory_region_add_subregion(&sphb->iommu_root, 0, + spapr_tce_get_iommu(sphb->tcet)); } static void spapr_phb_reset(DeviceState *qdev) |