/* * 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_ */