diff options
| author | Michael Ellerman <michael@ellerman.id.au> | 2005-11-11 14:25:24 +1100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-11-14 16:33:05 +1100 |
| commit | 5cd16ee934eafca74a6bb790328950cec68a8b78 (patch) | |
| tree | 2f4335c9559f5d1d199ea6e0b20185ceede4a2b5 /include/asm-powerpc/page_32.h | |
| parent | ee90f62b3e69d0cd9f8edc6b95f07b1a8c38aaf4 (diff) | |
[PATCH] powerpc: Merge page.h
Merge asm-ppc/page.h and asm-ppc64/page.h into asm-powerpc/page.h,
asm-powerpc/page_32.h and asm-powerpc/page_64.h
Built for PPC (common_defconfig), with ARCH=powerpc, mostly built with
ARCH=ppc (other things break the build). Built and booted on P5 LPAR
for PPC64 with ARCH=ppc/powerpc (pseries_defconfig). Mostly built for
iSeries powerpc.
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/page_32.h')
| -rw-r--r-- | include/asm-powerpc/page_32.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/asm-powerpc/page_32.h b/include/asm-powerpc/page_32.h new file mode 100644 index 000000000000..35221300a2ce --- /dev/null +++ b/include/asm-powerpc/page_32.h @@ -0,0 +1,38 @@ +#ifndef _ASM_POWERPC_PAGE_32_H +#define _ASM_POWERPC_PAGE_32_H + +#define VM_DATA_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS32 + +#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 */ |