| 1 | |
| 2 | * fixmap.h: compile-time virtual memory allocation
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| 3 | *
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| 4 | * This file is subject to the terms and conditions of the GNU General Public
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| 5 | * License. See the file "COPYING" in the main directory of this archive
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| 6 | * for more details.
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| 7 | *
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| 8 | * Copyright (C) 1998 Ingo Molnar
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| 9 | *
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| 10 | * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
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| 11 |
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| 12 |
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| 13 | #ifndef _ASM_FIXMAP_H
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| 14 | #define _ASM_FIXMAP_H
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| 15 |
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| 16 | #ifdef CONFIG_HIGHMEM
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| 17 | #include <linux/threads.h>
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| 18 | #include <linux/pgtable.h>
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| 19 | #include <asm/kmap_size.h>
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| 20 |
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| 21 |
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| 22 | enum fixed_addresses {
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| 23 | FIX_KMAP_BEGIN,
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| 24 | FIX_KMAP_END = FIX_KMAP_BEGIN +
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| 25 | (KM_MAX_IDX * NR_CPUS * DCACHE_N_COLORS) - 1,
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| 26 | __end_of_fixed_addresses
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| 27 | };
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| 28 |
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| 29 | #define FIXADDR_END (XCHAL_KSEG_CACHED_VADDR - PAGE_SIZE)
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| 30 | #define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
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| 31 |
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| 32 | #define FIXADDR_START ((FIXADDR_END - FIXADDR_SIZE) & PMD_MASK)
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| 33 | #define FIXADDR_TOP (FIXADDR_START + FIXADDR_SIZE - PAGE_SIZE)
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| 34 |
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| 35 | #include <asm-generic/fixmap.h>
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| 36 |
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| 37 | #endif
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| 38 | #endif
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