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authorIan Campbell <ian.campbell@citrix.com>2008-12-16 12:17:30 -0800
committerIngo Molnar <mingo@elte.hu>2008-12-17 18:58:09 +0100
commite08e1f7adba522378e8d2ae941bf25443866136d (patch)
tree4410e414d856dc03d77a0c654d6b9672f6e69f36 /include/linux/swiotlb.h
parenta5ddde4a558b3bd1e3dc50e274a0db2ea7a8fd06 (diff)
swiotlb: allow architectures to override phys<->bus<->phys conversions
Impact: generalize phys<->bus<->phys conversions in the swiotlb code Architectures may need to override these conversions. Implement a __weak hook point containing the default implementation. 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.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h
index 58b996a642f9..694f1839cbc0 100644
--- a/include/linux/swiotlb.h
+++ b/include/linux/swiotlb.h
@@ -27,6 +27,9 @@ swiotlb_init(void);
extern void *swiotlb_alloc_boot(size_t bytes, unsigned long nslabs);
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 void
*swiotlb_alloc_coherent(struct device *hwdev, size_t size,
dma_addr_t *dma_handle, gfp_t flags);