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/*
* fixmap.h: compile-time virtual memory allocation
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*
* Copyright (C) 1998 Ingo Molnar
*
* Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
*/
#ifndef _ASM_FIXMAP_H
#define _ASM_FIXMAP_H
#ifdef CONFIG_HIGHMEM
#include <linux/threads.h>
#include <linux/pgtable.h>
#include <asm/kmap_size.h>
/* The map slots for temporary mappings via kmap_atomic/local(). */
enum fixed_addresses {
FIX_KMAP_BEGIN,
FIX_KMAP_END = FIX_KMAP_BEGIN +
(KM_MAX_IDX * NR_CPUS * DCACHE_N_COLORS) - 1,
__end_of_fixed_addresses
};
#define FIXADDR_END (XCHAL_KSEG_CACHED_VADDR - PAGE_SIZE)
#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
/* Enforce that FIXADDR_START is PMD aligned to handle cache aliasing */
#define FIXADDR_START ((FIXADDR_END - FIXADDR_SIZE) & PMD_MASK)
#define FIXADDR_TOP (FIXADDR_START + FIXADDR_SIZE - PAGE_SIZE)
#include <asm-generic/fixmap.h>
#endif /* CONFIG_HIGHMEM */
#endif