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Last change
on this file since 2 was
2,
checked in by jglee, 11 years ago
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first commit
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Property svn:executable set to
*
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File size:
810 bytes
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| 1 | /* |
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| 2 | * This file is subject to the terms and conditions of the GNU General Public |
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| 3 | * License. See the file "COPYING" in the main directory of this archive |
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| 4 | * for more details. |
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| 5 | * |
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| 6 | * Copyright (C) 1994 - 1999, 2000, 03 Ralf Baechle |
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| 7 | * Copyright (C) 1999, 2000 Silicon Graphics, Inc. |
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| 8 | */ |
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| 9 | #ifndef _ASM_PAGE_H |
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| 10 | #define _ASM_PAGE_H |
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| 11 | |
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| 12 | #include <unistd.h> |
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| 13 | |
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| 14 | #define PAGE_SIZE (getpagesize()) |
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| 15 | static __inline__ int getpageshift() |
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| 16 | { |
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| 17 | int pagesize = getpagesize(); |
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| 18 | #if (__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 4)) |
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| 19 | return (__builtin_clz(pagesize) ^ 31); |
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| 20 | #else |
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| 21 | register int pageshift = -1; |
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| 22 | while (pagesize) { pagesize >>= 1; pageshift++; } |
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| 23 | return pageshift; |
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| 24 | #endif |
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| 25 | } |
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| 26 | #define PAGE_SHIFT (getpageshift()) |
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| 27 | |
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| 28 | #endif /* _ASM_PAGE_H */ |
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| 29 | #ifdef CONFIG_LIMITED_DMA |
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| 30 | #define WANT_PAGE_VIRTUAL |
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| 31 | #endif |
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| 32 | |
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