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authorKumar Gala <galak@kernel.crashing.org>2008-12-13 17:20:27 -0600
committerWolfgang Denk <wd@denx.de>2008-12-15 22:04:29 +0100
commit65e43a10631537dcb92c302d36301a12308216c3 (patch)
tree68b2712c8c277d0489768ecbff8ed031dde00a3f /include/asm-arm/io.h
parent45845301af3de8675c1f7bbc815c6de35452605a (diff)
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Introduce virt_to_phys()
virt_to_phys() returns the physical address given a virtual. In most cases this will be just the input value as the vast majority of systems run in a 1:1 mode. However in systems that are not running this way it should report the physical address or ~0 if no mapping exists for the given virtual address. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Diffstat (limited to 'include/asm-arm/io.h')
-rw-r--r--include/asm-arm/io.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/asm-arm/io.h b/include/asm-arm/io.h
index f4ae307..fec3a7e 100644
--- a/include/asm-arm/io.h
+++ b/include/asm-arm/io.h
@@ -57,6 +57,11 @@ static inline void unmap_physmem(void *vaddr, unsigned long flags)
}
+static inline phys_addr_t virt_to_phys(void * vaddr)
+{
+ return (phys_addr_t)(vaddr);
+}
+
/*
* Generic virtual read/write. Note that we don't support half-word
* read/writes. We define __arch_*[bl] here, and leave __arch_*w