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hexagon: use generic fixmap.h

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Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Richard Kuo <rkuo@codeaurora.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mark Salter 2014-01-23 15:53:51 -08:00 committed by Linus Torvalds
parent 114cefc87e
commit 978c558401
1 changed files with 1 additions and 39 deletions
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40
arch/hexagon/include/asm/fixmap.h
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@ -26,45 +26,7 @@
*/
#include <asm/mem-layout.h>
/*
* Full fixmap support involves set_fixmap() functions, but
* these may not be needed if all we're after is an area for
* highmem kernel mappings.
*/
#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
#define __virt_to_fix(x) ((FIXADDR_TOP - ((x)&PAGE_MASK)) >> PAGE_SHIFT)
extern void __this_fixmap_does_not_exist(void);
/**
* fix_to_virt -- "index to address" translation.
*
* If anyone tries to use the idx directly without translation,
* we catch the bug with a NULL-deference kernel oops. Illegal
* ranges of incoming indices are caught too.
*/
static inline unsigned long fix_to_virt(const unsigned int idx)
{
/*
* This branch gets completely eliminated after inlining,
* except when someone tries to use fixaddr indices in an
* illegal way. (such as mixing up address types or using
* out-of-range indices).
*
* If it doesn't get removed, the linker will complain
* loudly with a reasonably clear error message..
*/
if (idx >= __end_of_fixed_addresses)
__this_fixmap_does_not_exist();
return __fix_to_virt(idx);
}
static inline unsigned long virt_to_fix(const unsigned long vaddr)
{
BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
return __virt_to_fix(vaddr);
}
#include <asm-generic/fixmap.h>
#define kmap_get_fixmap_pte(vaddr) \
pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), \