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authorPeter Maydell <peter.maydell@linaro.org>2012-10-29 11:34:32 +1000
committerPaolo Bonzini <pbonzini@redhat.com>2012-11-12 16:44:57 +0100
commit9e11908f12f92e31ea94dc2a4c962c836cba9f2a (patch)
tree58ae5eb64276cbd5d0d9a3eeaec7f46ff8514d0a /dma.h
parent4003e24fce1df84a2e8c992376ed2c294816c33c (diff)
dma: Define dma_context_memory and use in sysbus-ohci
Define a new global dma_context_memory which is a DMAContext corresponding to the global address_space_memory AddressSpace. This can be used by sysbus peripherals like sysbus-ohci which need to do DMA. In particular, use it in the sysbus-ohci device, which fixes a segfault when attempting to use that device. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Diffstat (limited to 'dma.h')
-rw-r--r--dma.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/dma.h b/dma.h
index 91ccdb5eac..eedf878383 100644
--- a/dma.h
+++ b/dma.h
@@ -68,6 +68,11 @@ struct DMAContext {
DMAUnmapFunc *unmap;
};
+/* A global DMA context corresponding to the address_space_memory
+ * AddressSpace, for sysbus devices which do DMA.
+ */
+extern DMAContext dma_context_memory;
+
static inline void dma_barrier(DMAContext *dma, DMADirection dir)
{
/*