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| author | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-03 00:00:17 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-01-03 11:27:43 +0000 |
| commit | 9eedd96301cad8ab58ee8c1e579677d0a75c2ba1 (patch) | |
| tree | 87f5ebbbd5769516771bef37574b39464177f496 /arch/arm/mach-ks8695 | |
| parent | 3d29005ab8d828e36108ecc2338612ce3acdd86f (diff) | |
| download | linux-9eedd96301cad8ab58ee8c1e579677d0a75c2ba1.tar.gz linux-9eedd96301cad8ab58ee8c1e579677d0a75c2ba1.tar.bz2 linux-9eedd96301cad8ab58ee8c1e579677d0a75c2ba1.zip | |
ARM: DMA: Replace page_to_dma()/dma_to_page() with pfn_to_dma()/dma_to_pfn()
Replace the page_to_dma() and dma_to_page() macros with their PFN
equivalents. This allows us to map parts of memory which do not have
a struct page allocated to them to bus addresses. This will be used
internally by dma_alloc_coherent()/dma_alloc_writecombine().
Build tested on Versatile, OMAP1, IOP13xx and KS8695.
Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ks8695')
| -rw-r--r-- | arch/arm/mach-ks8695/include/mach/memory.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/mach-ks8695/include/mach/memory.h b/arch/arm/mach-ks8695/include/mach/memory.h index ffa19aae6e05..bace9a681adc 100644 --- a/arch/arm/mach-ks8695/include/mach/memory.h +++ b/arch/arm/mach-ks8695/include/mach/memory.h @@ -35,17 +35,17 @@ extern struct bus_type platform_bus_type; __phys_to_virt(x) : __bus_to_virt(x)); }) #define __arch_virt_to_dma(dev, x) ({ is_lbus_device(dev) ? \ (dma_addr_t)__virt_to_phys(x) : (dma_addr_t)__virt_to_bus(x); }) -#define __arch_page_to_dma(dev, x) \ - ({ dma_addr_t __dma = page_to_phys(page); \ +#define __arch_pfn_to_dma(dev, pfn) \ + ({ dma_addr_t __dma = __pfn_to_phys(pfn); \ if (!is_lbus_device(dev)) \ __dma = __dma - PHYS_OFFSET + KS8695_PCIMEM_PA; \ __dma; }) -#define __arch_dma_to_page(dev, x) \ +#define __arch_dma_to_pfn(dev, x) \ ({ dma_addr_t __dma = x; \ if (!is_lbus_device(dev)) \ __dma += PHYS_OFFSET - KS8695_PCIMEM_PA; \ - phys_to_page(__dma); \ + __phys_to_pfn(__dma); \ }) #endif |