mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-12 04:46:58 +07:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
23 lines
704 B
C
23 lines
704 B
C
#ifndef AGP_H
|
|
#define AGP_H 1
|
|
|
|
#include <asm/cacheflush.h>
|
|
|
|
/*
|
|
* Functions to keep the agpgart mappings coherent.
|
|
* The GART gives the CPU a physical alias of memory. The alias is
|
|
* mapped uncacheable. Make sure there are no conflicting mappings
|
|
* with different cachability attributes for the same page.
|
|
*/
|
|
|
|
int map_page_into_agp(struct page *page);
|
|
int unmap_page_from_agp(struct page *page);
|
|
#define flush_agp_mappings() global_flush_tlb()
|
|
|
|
/* Could use CLFLUSH here if the cpu supports it. But then it would
|
|
need to be called for each cacheline of the whole page so it may not be
|
|
worth it. Would need a page for it. */
|
|
#define flush_agp_cache() asm volatile("wbinvd":::"memory")
|
|
|
|
#endif
|