1#ifndef _PARISC_MMZONE_H
2#define _PARISC_MMZONE_H
3
4struct node_map_data {
5    pg_data_t pg_data;
6    struct page *adj_node_mem_map;
7};
8
9extern struct node_map_data node_data[];
10extern unsigned char *chunkmap;
11
12#define BADCHUNK                ((unsigned char)0xff)
13#define CHUNKSZ                 (256*1024*1024)
14#define CHUNKSHIFT              28
15#define CHUNKMASK               (~(CHUNKSZ - 1))
16#define CHUNKNUM(paddr)         ((paddr) >> CHUNKSHIFT)
17
18#define NODE_DATA(nid)          (&node_data[nid].pg_data)
19#define NODE_MEM_MAP(nid)       (NODE_DATA(nid)->node_mem_map)
20#define ADJ_NODE_MEM_MAP(nid)   (node_data[nid].adj_node_mem_map)
21
22#define phys_to_page(paddr) \
23	(ADJ_NODE_MEM_MAP(chunkmap[CHUNKNUM((paddr))]) \
24	+ ((paddr) >> PAGE_SHIFT))
25
26#define virt_to_page(kvaddr) phys_to_page(__pa(kvaddr))
27
28/* This is kind of bogus, need to investigate performance of doing it right */
29#define VALID_PAGE(page)	((page - mem_map) < max_mapnr)
30
31#endif /* !_PARISC_MMZONE_H */
32