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[AGPGART] Move [un]map_page_into_agp into asm/agp.h 

Remove an arch-dependent hunk in favor of #define-ing the respective bits in
asm-<arch>/agp.h (allowing easier overriding in para-virtualized environments).

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Jan Beulich 2007-04-02 14:50:14 +01:00 committed by Dave Jones
parent 77ec430ec3
commit 9eeee24414
3 changed files with 8 additions and 26 deletions
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22
drivers/char/agp/generic.c
View File

@ -51,28 +51,6 @@ int agp_memory_reserved;
*/
EXPORT_SYMBOL_GPL(agp_memory_reserved);
#if defined(CONFIG_X86)
int map_page_into_agp(struct page *page)
{
int i;
i = change_page_attr(page, 1, PAGE_KERNEL_NOCACHE);
/* Caller's responsibility to call global_flush_tlb() for
* performance reasons */
return i;
}
EXPORT_SYMBOL_GPL(map_page_into_agp);
int unmap_page_from_agp(struct page *page)
{
int i;
i = change_page_attr(page, 1, PAGE_KERNEL);
/* Caller's responsibility to call global_flush_tlb() for
* performance reasons */
return i;
}
EXPORT_SYMBOL_GPL(unmap_page_from_agp);
#endif
/*
* Generic routines for handling agp_memory structures -
* They use the basic page allocation routines to do the brunt of the work.

6
include/asm-i386/agp.h
View File

@ -12,8 +12,10 @@
* data corruption on some CPUs.
*/
int map_page_into_agp(struct page *page);
int unmap_page_from_agp(struct page *page);
/* Caller's responsibility to call global_flush_tlb() for
* performance reasons */
#define map_page_into_agp(page) change_page_attr(page, 1, PAGE_KERNEL_NOCACHE)
#define unmap_page_from_agp(page) change_page_attr(page, 1, PAGE_KERNEL)
#define flush_agp_mappings() global_flush_tlb()
/* Could use CLFLUSH here if the cpu supports it. But then it would

6
include/asm-x86_64/agp.h
View File

@ -10,8 +10,10 @@
* with different cachability attributes for the same page.
*/
int map_page_into_agp(struct page *page);
int unmap_page_from_agp(struct page *page);
/* Caller's responsibility to call global_flush_tlb() for
* performance reasons */
#define map_page_into_agp(page) change_page_attr(page, 1, PAGE_KERNEL_NOCACHE)
#define unmap_page_from_agp(page) change_page_attr(page, 1, PAGE_KERNEL)
#define flush_agp_mappings() global_flush_tlb()
/* Could use CLFLUSH here if the cpu supports it. But then it would