From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 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! --- include/asm-x86_64/agp.h | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100644 include/asm-x86_64/agp.h (limited to 'include/asm-x86_64/agp.h') diff --git a/include/asm-x86_64/agp.h b/include/asm-x86_64/agp.h new file mode 100644 index 00000000000..0bb9019d58a --- /dev/null +++ b/include/asm-x86_64/agp.h @@ -0,0 +1,22 @@ +#ifndef AGP_H +#define AGP_H 1 + +#include + +/* + * 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 -- cgit v1.2.3