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[RFC,7/8] intel_iommu: provide AddressSpaceOps.iommu_get()

Message ID 1493285660-4470-8-git-send-email-peterx@redhat.com
State New
Headers show

Commit Message

Peter Xu April 27, 2017, 9:34 a.m. UTC 
Then it'll be the first one to support address_space_iommu_get() API.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 hw/i386/intel_iommu.c | 9 +++++++++
 1 file changed, 9 insertions(+)
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Patch

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 609732b..5131329 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -2632,6 +2632,12 @@  static const MemoryRegionOps vtd_mem_ir_ops = {
     },
 };
 
+static IOMMUObject *vtd_as_iommu_get(AddressSpace *as)
+{
+    VTDAddressSpace *vtd_dev_as = container_of(as, VTDAddressSpace, as);
+    return (IOMMUObject *)vtd_dev_as->iommu_state;
+}
+
 VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
 {
     uintptr_t key = (uintptr_t)bus;
@@ -2692,6 +2698,9 @@  VTDAddressSpace *vtd_find_add_as(IntelIOMMUState *s, PCIBus *bus, int devfn)
                                             VTD_INTERRUPT_ADDR_FIRST,
                                             &vtd_dev_as->iommu_ir, 64);
         address_space_init(&vtd_dev_as->as, &vtd_dev_as->root, name);
+
+        vtd_dev_as->as.as_ops.iommu_get = vtd_as_iommu_get;
+
         memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,
                                             &vtd_dev_as->sys_alias, 1);
         memory_region_add_subregion_overlap(&vtd_dev_as->root, 0,