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9d4ae7276a
Patch from Deepak Saxena In working on adding 36-bit addressed supersection support to ioremap(), I came to the conclusion that it would be far simpler to do so by just splitting __ioremap() into a main external interface and adding an __ioremap_pfn() function that takes a pfn + offset into the page that __ioremap() can call. This way existing callers of __ioremap() won't have to change their code and 36-bit systems will just call __ioremap_pfn() and we will not have to deal with unsigned long long variables. Note that __ioremap_pfn() should _NOT_ be called directly by drivers but is reserved for use by arch_ioremap() implementations that map 32-bit resource regions into the real 36-bit address and then call this new function. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
33 lines
831 B
C
33 lines
831 B
C
/*
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* linux/include/asm-arm/map.h
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*
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* Copyright (C) 1999-2000 Russell King
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* Page table mapping constructs and function prototypes
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*/
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struct map_desc {
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unsigned long virtual;
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unsigned long pfn;
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unsigned long length;
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unsigned int type;
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};
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struct meminfo;
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#define MT_DEVICE 0
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#define MT_CACHECLEAN 1
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#define MT_MINICLEAN 2
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#define MT_LOW_VECTORS 3
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#define MT_HIGH_VECTORS 4
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#define MT_MEMORY 5
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#define MT_ROM 6
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#define MT_IXP2000_DEVICE 7
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extern void create_memmap_holes(struct meminfo *);
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extern void memtable_init(struct meminfo *);
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extern void iotable_init(struct map_desc *, int);
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extern void setup_io_desc(void);
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