/* * linux/include/asm-sh/mmzone.h * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #ifndef __ASM_SH_MMZONE_H #define __ASM_SH_MMZONE_H #include <linux/config.h> #ifdef CONFIG_DISCONTIGMEM /* Currently, just for HP690 */ #define PHYSADDR_TO_NID(phys) ((((phys) - __MEMORY_START) >= 0x01000000)?1:0) extern pg_data_t discontig_page_data[MAX_NUMNODES]; extern bootmem_data_t discontig_node_bdata[MAX_NUMNODES]; /* * Following are macros that each numa implmentation must define. */ /* * Given a kernel address, find the home node of the underlying memory. */ #define KVADDR_TO_NID(kaddr) PHYSADDR_TO_NID(__pa(kaddr)) /* * Return a pointer to the node data for node n. */ #define NODE_DATA(nid) (&discontig_page_data[nid]) /* * NODE_MEM_MAP gives the kaddr for the mem_map of the node. */ #define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map) #define phys_to_page(phys) \ ({ unsigned int node = PHYSADDR_TO_NID(phys); \ NODE_MEM_MAP(node) \ + (((phys) - NODE_DATA(node)->node_start_paddr) >> PAGE_SHIFT); }) static inline int is_valid_page(struct page *page) { unsigned int i; for (i = 0; i < MAX_NUMNODES; i++) { if (page >= NODE_MEM_MAP(i) && page < NODE_MEM_MAP(i) + NODE_DATA(i)->node_size) return 1; } return 0; } #define VALID_PAGE(page) is_valid_page(page) #define page_to_phys(page) PHYSADDR(page_address(page)) #endif /* CONFIG_DISCONTIGMEM */ #endif