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| author | Ian Campbell <ian.campbell@citrix.com> | 2008-12-16 12:17:31 -0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-12-17 18:58:13 +0100 |
| commit | b81ea27b2329bf44b30c427800954f845896d476 (patch) | |
| tree | 84bbfc80477c3561ee601c1c05dcc0917ced196b /include/linux/swiotlb.h | |
| parent | e08e1f7adba522378e8d2ae941bf25443866136d (diff) | |
| download | linux-3.10-b81ea27b2329bf44b30c427800954f845896d476.tar.gz linux-3.10-b81ea27b2329bf44b30c427800954f845896d476.tar.bz2 linux-3.10-b81ea27b2329bf44b30c427800954f845896d476.zip | |
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.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/swiotlb.h b/include/linux/swiotlb.h index 694f1839cbc..325af1de035 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); |