mmzone.h
上传用户:jlfgdled
上传日期:2013-04-10
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文件大小:3k
- /*
- * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
- */
- #ifndef _ASM_MMZONE_H_
- #define _ASM_MMZONE_H_
- #include <linux/config.h>
- #include <asm/sn/types.h>
- #include <asm/sn/addrs.h>
- #include <asm/sn/arch.h>
- #include <asm/sn/klkernvars.h>
- typedef struct plat_pglist_data {
- pg_data_t gendata;
- kern_vars_t kern_vars;
- } plat_pg_data_t;
- /*
- * Following are macros that are specific to this numa platform.
- */
- extern int numa_debug(void);
- extern plat_pg_data_t *plat_node_data[];
- #define PHYSADDR_TO_NID(pa) NASID_TO_COMPACT_NODEID(NASID_GET(pa))
- #define PLAT_NODE_DATA(n) (plat_node_data[n])
- #define PLAT_NODE_DATA_STARTNR(n) (PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
- #define PLAT_NODE_DATA_SIZE(n) (PLAT_NODE_DATA(n)->gendata.node_size)
- #define PLAT_NODE_DATA_LOCALNR(p, n)
- (((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
- #define numa_node_id() cputocnode(current->processor)
- #ifdef CONFIG_DISCONTIGMEM
- /*
- * 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)
- ((NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr))) != -1) ?
- (NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr)))) :
- (printk("NUMABUG: %s line %d addr 0x%lx", __FILE__, __LINE__, kaddr),
- numa_debug(), -1))
- /*
- * Return a pointer to the node data for node n.
- */
- #define NODE_DATA(n) (&((PLAT_NODE_DATA(n))->gendata))
- /*
- * NODE_MEM_MAP gives the kaddr for the mem_map of the node.
- */
- #define NODE_MEM_MAP(nid) (NODE_DATA(nid)->node_mem_map)
- /*
- * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
- * and returns the mem_map of that node.
- */
- #define ADDR_TO_MAPBASE(kaddr)
- NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
- /*
- * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
- * and returns the kaddr corresponding to first physical page in the
- * node's mem_map.
- */
- #define LOCAL_BASE_ADDR(kaddr) ((unsigned long)(kaddr) & ~(NODE_MAX_MEM_SIZE-1))
- #define LOCAL_MAP_NR(kvaddr)
- (((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
- #define MIPS64_NR(kaddr) (((unsigned long)(kaddr) > (unsigned long)high_memory)
- ? (max_mapnr + 1) : (LOCAL_MAP_NR((kaddr)) +
- (((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) /
- sizeof(mem_map_t))))
- #define kern_addr_valid(addr) ((KVADDR_TO_NID((unsigned long)addr) >
- -1) ? 0 : (test_bit(LOCAL_MAP_NR((addr)),
- NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
- #define virt_to_page(kaddr) (mem_map + MIPS64_NR(kaddr))
- #define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
- #endif /* CONFIG_DISCONTIGMEM */
- #endif /* _ASM_MMZONE_H_ */