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1#ifndef _ASM_POWERPC_PAGE_32_H
2#define _ASM_POWERPC_PAGE_32_H
3
4#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32
5
6#define PPC_MEMSTART 0
7
8#ifndef __ASSEMBLY__
9/*
10 * The basic type of a PTE - 64 bits for those CPUs with > 32 bit
11 * physical addressing. For now this just the IBM PPC440.
12 */
13#ifdef CONFIG_PTE_64BIT
14typedef unsigned long long pte_basic_t;
15#define PTE_SHIFT (PAGE_SHIFT - 3) /* 512 ptes per page */
16#define PTE_FMT "%16Lx"
17#else
18typedef unsigned long pte_basic_t;
19#define PTE_SHIFT (PAGE_SHIFT - 2) /* 1024 ptes per page */
20#define PTE_FMT "%.8lx"
21#endif
22
23struct page;
24extern void clear_pages(void *page, int order);
25static inline void clear_page(void *page) { clear_pages(page, 0); }
26extern void copy_page(void *to, void *from);
27
28/* Pure 2^n version of get_order */
29extern __inline__ int get_order(unsigned long size)
30{
31 int lz;
32
33 size = (size-1) >> PAGE_SHIFT;
34 asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size));
35 return 32 - lz;
36}
37
38#endif /* __ASSEMBLY__ */
39
40#endif /* _ASM_POWERPC_PAGE_32_H */