diff options
Diffstat (limited to 'include/asm-mips/mmzone.h')
| -rw-r--r-- | include/asm-mips/mmzone.h | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/include/asm-mips/mmzone.h b/include/asm-mips/mmzone.h new file mode 100644 index 00000000000..29ee13be0b2 --- /dev/null +++ b/include/asm-mips/mmzone.h @@ -0,0 +1,39 @@ +/* + * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99 + * Rewritten for Linux 2.6 by Christoph Hellwig (hch@lst.de) Jan 2004 + */ +#ifndef _ASM_MMZONE_H_ +#define _ASM_MMZONE_H_ + +#include <asm/page.h> +#include <mmzone.h> + +#define kvaddr_to_nid(kvaddr) pa_to_nid(__pa(kvaddr)) +#define pfn_to_nid(pfn) pa_to_nid((pfn) << PAGE_SHIFT) + +#define pfn_valid(pfn) \ +({ \ + unsigned long __pfn = (pfn); \ + int __n = pfn_to_nid(__pfn); \ + ((__n >= 0) ? (__pfn < NODE_DATA(__n)->node_start_pfn + \ + NODE_DATA(__n)->node_spanned_pages) : 0);\ +}) + +#define pfn_to_page(pfn) \ +({ \ + unsigned long __pfn = (pfn); \ + pg_data_t *__pg = NODE_DATA(pfn_to_nid(__pfn)); \ + __pg->node_mem_map + (__pfn - __pg->node_start_pfn); \ +}) + +#define page_to_pfn(p) \ +({ \ + struct page *__p = (p); \ + struct zone *__z = page_zone(__p); \ + ((__p - __z->zone_mem_map) + __z->zone_start_pfn); \ +}) + +/* XXX: FIXME -- wli */ +#define kern_addr_valid(addr) (0) + +#endif /* _ASM_MMZONE_H_ */ |