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[Qemu-ppc] [PATCH 1/8] pci: Introduce helper to retrieve a PCI device's
From: |
Alexey Kardashevskiy |
Subject: |
[Qemu-ppc] [PATCH 1/8] pci: Introduce helper to retrieve a PCI device's DMA address space |
Date: |
Wed, 7 Aug 2013 18:21:25 +1000 |
From: David Gibson <address@hidden>
A PCI device's DMA address space (possibly an IOMMU) is returned by a
method on the PCIBus. At the moment that only has one caller, so the
method is simply open coded. We'll need another caller for VFIO, so
this patch introduces a helper/wrapper function.
Signed-off-by: David Gibson <address@hidden>
---
hw/pci/pci.c | 9 ++++++++-
include/hw/pci/pci.h | 1 +
2 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index 4bce3e7..3cea25f 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -813,7 +813,7 @@ static PCIDevice *do_pci_register_device(PCIDevice
*pci_dev, PCIBus *bus,
pci_dev->bus = bus;
if (bus->iommu_fn) {
- dma_as = bus->iommu_fn(bus, bus->iommu_opaque, devfn);
+ dma_as = pci_iommu_as(pci_dev);
} else {
/* FIXME: inherit memory region from bus creator */
dma_as = &address_space_memory;
@@ -2248,6 +2248,13 @@ static void pci_device_class_init(ObjectClass *klass,
void *data)
k->props = pci_props;
}
+AddressSpace *pci_iommu_as(PCIDevice *dev)
+{
+ PCIBus *bus = PCI_BUS(dev->bus);
+
+ return bus->iommu_fn(bus, bus->iommu_opaque, dev->devfn);
+}
+
void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque)
{
bus->iommu_fn = fn;
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index b6ad9e4..614f809 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -407,6 +407,7 @@ void pci_device_deassert_intx(PCIDevice *dev);
typedef AddressSpace *(*PCIIOMMUFunc)(PCIBus *, void *, int);
+AddressSpace *pci_iommu_as(PCIDevice *dev);
void pci_setup_iommu(PCIBus *bus, PCIIOMMUFunc fn, void *opaque);
static inline void
--
1.8.3.2