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authorIan Campbell <ian.campbell@citrix.com>2008-12-16 12:17:31 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-17 18:58:13 +0100
commitb81ea27b2329bf44b30c427800954f845896d476 (patch)
tree84bbfc80477c3561ee601c1c05dcc0917ced196b /include/linux/swiotlb.h
parente08e1f7adba522378e8d2ae941bf25443866136d (diff)
downloadop-kernel-dev-b81ea27b2329bf44b30c427800954f845896d476.zip
op-kernel-dev-b81ea27b2329bf44b30c427800954f845896d476.tar.gz
swiotlb: add arch hook to force mapping
Impact: generalize the sw-IOTLB range checks Some architectures require special rules to determine whether a range needs mapping or not. This adds a weak function for architectures to override. Signed-off-by: Ian Campbell <ian.campbell@citrix.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux/swiotlb.h')
-rw-r--r--include/linux/swiotlb.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 694f183..325af1d 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -30,6 +30,8 @@ extern void *swiotlb_alloc(unsigned order, unsigned long nslabs);
extern dma_addr_t swiotlb_phys_to_bus(phys_addr_t address);
extern phys_addr_t swiotlb_bus_to_phys(dma_addr_t address);
+extern int swiotlb_arch_range_needs_mapping(void *ptr, size_t size);
+
extern void
*swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags);
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