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ARM: provide phys_to_page() to complement page_to_phys() 

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Tested-By: Jamie Iles <jamie@jamieiles.com>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Russell King 2009-10-31 17:51:57 +00:00
parent ac50e95078
commit 719301ff1c
1 changed files with 6 additions and 5 deletions
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11
arch/arm/include/asm/memory.h
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@ -134,6 +134,12 @@
#define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT) #define __phys_to_pfn(paddr) ((paddr) >> PAGE_SHIFT)
#define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT) #define __pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
/*
* Convert a page to/from a physical address
*/
#define page_to_phys(page) (__pfn_to_phys(page_to_pfn(page)))
#define phys_to_page(phys) (pfn_to_page(__phys_to_pfn(phys)))
#ifndef __ASSEMBLY__ #ifndef __ASSEMBLY__
/* /*
@ -292,11 +298,6 @@ static inline __deprecated void *bus_to_virt(unsigned long x)
#endif /* !CONFIG_DISCONTIGMEM */ #endif /* !CONFIG_DISCONTIGMEM */
/*
* For BIO. "will die". Kill me when bio_to_phys() and bvec_to_phys() die.
*/
#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
/* /*
* Optional coherency support. Currently used only by selected * Optional coherency support. Currently used only by selected
* Intel XSC3-based systems. * Intel XSC3-based systems.