diff options
Diffstat (limited to 'include/asm-ia64/agp.h')
| -rw-r--r-- | include/asm-ia64/agp.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/include/asm-ia64/agp.h b/include/asm-ia64/agp.h new file mode 100644 index 00000000000..d1316f1e6ee --- /dev/null +++ b/include/asm-ia64/agp.h @@ -0,0 +1,21 @@ +#ifndef _ASM_IA64_AGP_H +#define _ASM_IA64_AGP_H + +/* + * IA-64 specific AGP definitions. + * + * Copyright (C) 2002-2003 Hewlett-Packard Co + * David Mosberger-Tang <davidm@hpl.hp.com> + */ + +/* + * To avoid memory-attribute aliasing issues, we require that the AGPGART engine operate + * in coherent mode, which lets us map the AGP memory as normal (write-back) memory + * (unlike x86, where it gets mapped "write-coalescing"). + */ +#define map_page_into_agp(page) /* nothing */ +#define unmap_page_from_agp(page) /* nothing */ +#define flush_agp_mappings() /* nothing */ +#define flush_agp_cache() mb() + +#endif /* _ASM_IA64_AGP_H */ |