LXR linux-old/include/asm-mips64/mmzone.h

   1/*
   2 * Written by Kanoj Sarcar (kanoj@sgi.com) Aug 99
   3 */
   4#ifndef _ASM_MMZONE_H_
   5#define _ASM_MMZONE_H_
   6
   7#include <linux/config.h>
   8#include <asm/sn/types.h>
   9#include <asm/sn/addrs.h>
  10#include <asm/sn/arch.h>
  11#include <asm/sn/klkernvars.h>
  12
  13typedef struct plat_pglist_data {
  14        pg_data_t       gendata;
  15        kern_vars_t     kern_vars;
  16} plat_pg_data_t;
  17
  18/*
  19 * Following are macros that are specific to this numa platform.
  20 */
  21
  22extern int numa_debug(void);
  23extern plat_pg_data_t *plat_node_data[];
  24
  25#define PHYSADDR_TO_NID(pa)             NASID_TO_COMPACT_NODEID(NASID_GET(pa))
  26#define PLAT_NODE_DATA(n)               (plat_node_data[n])
  27#define PLAT_NODE_DATA_STARTNR(n)    (PLAT_NODE_DATA(n)->gendata.node_start_mapnr)
  28#define PLAT_NODE_DATA_SIZE(n)       (PLAT_NODE_DATA(n)->gendata.node_size)
  29#define PLAT_NODE_DATA_LOCALNR(p, n) \
  30                (((p) - PLAT_NODE_DATA(n)->gendata.node_start_paddr) >> PAGE_SHIFT)
  31
  32#define numa_node_id()  cputocnode(current->processor)
  33
  34#ifdef CONFIG_DISCONTIGMEM
  35
  36/*
  37 * Following are macros that each numa implmentation must define.
  38 */
  39
  40/*
  41 * Given a kernel address, find the home node of the underlying memory.
  42 */
  43#define KVADDR_TO_NID(kaddr) \
  44        ((NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr))) != -1) ? \
  45        (NASID_TO_COMPACT_NODEID(NASID_GET(__pa(kaddr)))) : \
  46        (printk("NUMABUG: %s line %d addr 0x%lx", __FILE__, __LINE__, kaddr), \
  47        numa_debug(), -1))
  48
  49/*
  50 * Return a pointer to the node data for node n.
  51 */
  52#define NODE_DATA(n)    (&((PLAT_NODE_DATA(n))->gendata))
  53
  54/*
  55 * NODE_MEM_MAP gives the kaddr for the mem_map of the node.
  56 */
  57#define NODE_MEM_MAP(nid)       (NODE_DATA(nid)->node_mem_map)
  58
  59/*
  60 * Given a kaddr, ADDR_TO_MAPBASE finds the owning node of the memory
  61 * and returns the mem_map of that node.
  62 */
  63#define ADDR_TO_MAPBASE(kaddr) \
  64                        NODE_MEM_MAP(KVADDR_TO_NID((unsigned long)(kaddr)))
  65
  66/*
  67 * Given a kaddr, LOCAL_BASE_ADDR finds the owning node of the memory
  68 * and returns the kaddr corresponding to first physical page in the
  69 * node's mem_map.
  70 */
  71#define LOCAL_BASE_ADDR(kaddr)  ((unsigned long)(kaddr) & ~(NODE_MAX_MEM_SIZE-1))
  72
  73#define LOCAL_MAP_NR(kvaddr) \
  74        (((unsigned long)(kvaddr)-LOCAL_BASE_ADDR((kvaddr))) >> PAGE_SHIFT)
  75
  76#define MIPS64_NR(kaddr) (((unsigned long)(kaddr) > (unsigned long)high_memory)\
  77                ? (max_mapnr + 1) : (LOCAL_MAP_NR((kaddr)) + \
  78                (((unsigned long)ADDR_TO_MAPBASE((kaddr)) - PAGE_OFFSET) / \
  79                sizeof(mem_map_t))))
  80
  81#define kern_addr_valid(addr)   ((KVADDR_TO_NID((unsigned long)addr) > \
  82        -1) ? 0 : (test_bit(LOCAL_MAP_NR((addr)), \
  83        NODE_DATA(KVADDR_TO_NID((unsigned long)addr))->valid_addr_bitmap)))
  84
  85#define virt_to_page(kaddr)     (mem_map + MIPS64_NR(kaddr))
  86#define VALID_PAGE(page)        ((page - mem_map) < max_mapnr)
  87
  88#endif /* CONFIG_DISCONTIGMEM */
  89
  90#endif /* _ASM_MMZONE_H_ */
  91