493f25ef40
This defines PPC_MEMSTART as 0 because it is still used in a couple of places in the 32-bit code. Signed-off-by: Paul Mackerras <paulus@samba.org>
41 lines
1015 B
C
41 lines
1015 B
C
#ifndef _ASM_POWERPC_PAGE_32_H
|
|
#define _ASM_POWERPC_PAGE_32_H
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32
|
|
|
|
#define PPC_MEMSTART 0
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* The basic type of a PTE - 64 bits for those CPUs with > 32 bit
|
|
* physical addressing. For now this just the IBM PPC440.
|
|
*/
|
|
#ifdef CONFIG_PTE_64BIT
|
|
typedef unsigned long long pte_basic_t;
|
|
#define PTE_SHIFT (PAGE_SHIFT - 3) /* 512 ptes per page */
|
|
#define PTE_FMT "%16Lx"
|
|
#else
|
|
typedef unsigned long pte_basic_t;
|
|
#define PTE_SHIFT (PAGE_SHIFT - 2) /* 1024 ptes per page */
|
|
#define PTE_FMT "%.8lx"
|
|
#endif
|
|
|
|
struct page;
|
|
extern void clear_pages(void *page, int order);
|
|
static inline void clear_page(void *page) { clear_pages(page, 0); }
|
|
extern void copy_page(void *to, void *from);
|
|
|
|
/* Pure 2^n version of get_order */
|
|
extern __inline__ int get_order(unsigned long size)
|
|
{
|
|
int lz;
|
|
|
|
size = (size-1) >> PAGE_SHIFT;
|
|
asm ("cntlzw %0,%1" : "=r" (lz) : "r" (size));
|
|
return 32 - lz;
|
|
}
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_POWERPC_PAGE_32_H */
|