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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2011-12-19 10:17:21 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-12-21 11:15:31 +0100 |
| commit | 0a9083d929012e474101ca88e8c082436267449d (patch) | |
| tree | 042c2064f2a25cb1e0109aafd0874c0d4ea1e7c4 /arch/arm/include/asm/mmu.h | |
| parent | edd0f1cede7fd568035da7820b329432cdb2220a (diff) | |
| download | barebox-0a9083d929012e474101ca88e8c082436267449d.tar.gz barebox-0a9083d929012e474101ca88e8c082436267449d.tar.xz | |
arch/arm: mmu: add map_io_range()
Add a function to remap an IO range into a virtual addresses
range. This is particulary usefull for the few devices
mapped at physical address 0, as the MTD boot devices.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/include/asm/mmu.h')
| -rw-r--r-- | arch/arm/include/asm/mmu.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/include/asm/mmu.h b/arch/arm/include/asm/mmu.h index 9ca5e2ab3a..f5ae7a823a 100644 --- a/arch/arm/include/asm/mmu.h +++ b/arch/arm/include/asm/mmu.h @@ -32,6 +32,7 @@ void dma_flush_range(unsigned long, unsigned long); void dma_inv_range(unsigned long, unsigned long); unsigned long virt_to_phys(void *virt); void *phys_to_virt(unsigned long phys); +void *map_io_sections(unsigned long physaddr, void *start, size_t size); #else static inline void *dma_alloc_coherent(size_t size) @@ -66,6 +67,11 @@ static inline void dma_inv_range(unsigned long s, unsigned long e) { } +static inline void *map_io_sections(unsigned long phys, void *start, size_t size) +{ + return (void *)phys; +} + #endif #ifdef CONFIG_CACHE_L2X0 |