commit 3df9d748067f5a7f01b98ddc63597c98c8244a95
author Alexey Kardashevskiy <aik@ozlabs.ru> Tue Jul 11 13:56:19 2017 +1000
committer Paolo Bonzini <pbonzini@redhat.com> Fri Jul 14 12:04:41 2017 +0200
tree b8270a9eb9c2484fb78f0ffee33b4f9ed611f8ae
parent 98fab4c163adb980568afa40824208edbcd6d70c

memory/iommu: QOM'fy IOMMU MemoryRegion

This defines new QOM object - IOMMUMemoryRegion - with MemoryRegion
as a parent.

This moves IOMMU-related fields from MR to IOMMU MR. However to avoid
dymanic QOM casting in fast path (address_space_translate, etc),
this adds an @is_iommu boolean flag to MR and provides new helper to
do simple cast to IOMMU MR - memory_region_get_iommu. The flag
is set in the instance init callback. This defines
memory_region_is_iommu as memory_region_get_iommu()!=NULL.

This switches MemoryRegion to IOMMUMemoryRegion in most places except
the ones where MemoryRegion may be an alias.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20170711035620.4232-2-aik@ozlabs.ru>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

hw/mips/mips_jazz.c

diff --git a/hw/mips/mips_jazz.c b/hw/mips/mips_jazz.c
index 1cef581..1f69322 100644
--- a/hw/mips/mips_jazz.c
+++ b/hw/mips/mips_jazz.c
@@ -130,7 +130,7 @@
     CPUMIPSState *env;
     qemu_irq *i8259;
     rc4030_dma *dmas;
-    MemoryRegion *rc4030_dma_mr;
+    IOMMUMemoryRegion *rc4030_dma_mr;
     MemoryRegion *isa_mem = g_new(MemoryRegion, 1);
     MemoryRegion *isa_io = g_new(MemoryRegion, 1);
     MemoryRegion *rtc = g_new(MemoryRegion, 1);