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#ifndef _PARISC_MMZONE_H

#define _PARISC_MMZONE_H

struct node_map_data {

    pg_data_t pg_data;

    struct page *adj_node_mem_map;

};

extern struct node_map_data node_data[];

extern unsigned char *chunkmap;

#define BADCHUNK                ((unsigned char)0xff)

#define CHUNKSZ                 (256*1024*1024)

#define CHUNKSHIFT              28

#define CHUNKMASK               (~(CHUNKSZ - 1))

#define CHUNKNUM(paddr)         ((paddr) >> CHUNKSHIFT)

#define NODE_DATA(nid)          (&node_data[nid].pg_data)

#define NODE_MEM_MAP(nid)       (NODE_DATA(nid)->node_mem_map)

#define ADJ_NODE_MEM_MAP(nid)   (node_data[nid].adj_node_mem_map)

#define phys_to_page(paddr) \

        (ADJ_NODE_MEM_MAP(chunkmap[CHUNKNUM((paddr))]) \

        + ((paddr) >> PAGE_SHIFT))

#define virt_to_page(kvaddr) phys_to_page(__pa(kvaddr))

/* This is kind of bogus, need to investigate performance of doing it right */

#define VALID_PAGE(page)        ((page - mem_map) < max_mapnr)

#endif /* !_PARISC_MMZONE_H */