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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
 *
 * Copyright 2008 Freescale Semiconductor Inc.
 *   Port to powerpc added by Kumar Gala
 *
 * Copyright 2011 Michal Simek <monstr@monstr.eu>
 * Copyright 2011 PetaLogix Qld Pty Ltd
 *   Port to Microblaze
 */

#ifndef _ASM_FIXMAP_H
#define _ASM_FIXMAP_H

#ifndef __ASSEMBLY__
#include <linux/kernel.h>
#include <asm/page.h>
#ifdef CONFIG_HIGHMEM
#include <linux/threads.h>
#include <asm/kmap_types.h>
#endif

#define FIXADDR_TOP	((unsigned long)(-PAGE_SIZE))

/*
 * Here we define all the compile-time 'special' virtual
 * addresses. The point is to have a constant address at
 * compile time, but to set the physical address only
 * in the boot process. We allocate these special addresses
 * from the end of virtual memory (0xfffff000) backwards.
 * Also this lets us do fail-safe vmalloc(), we
 * can guarantee that these special addresses and
 * vmalloc()-ed addresses never overlap.
 *
 * these 'compile-time allocated' memory buffers are
 * fixed-size 4k pages. (or larger if used with an increment
 * highger than 1) use fixmap_set(idx,phys) to associate
 * physical memory with fixmap indices.
 *
 * TLB entries of such buffers will not be flushed across
 * task switches.
 */
enum fixed_addresses {
	FIX_HOLE,
#ifdef CONFIG_HIGHMEM
	FIX_KMAP_BEGIN,	/* reserved pte's for temporary kernel mappings */
	FIX_KMAP_END = FIX_KMAP_BEGIN + (KM_TYPE_NR * num_possible_cpus()) - 1,
#endif
	__end_of_fixed_addresses
};

extern void __set_fixmap(enum fixed_addresses idx,
					phys_addr_t phys, pgprot_t flags);

#define __FIXADDR_SIZE	(__end_of_fixed_addresses << PAGE_SHIFT)
#define FIXADDR_START		(FIXADDR_TOP - __FIXADDR_SIZE)

#define FIXMAP_PAGE_NOCACHE PAGE_KERNEL_CI

#include <asm-generic/fixmap.h>

#endif /* !__ASSEMBLY__ */
#endif

Filemanager

Name Type Size Permission Actions
Kbuild File 742 B 0644
asm-compat.h File 518 B 0644
asm-offsets.h File 35 B 0644
atomic.h File 626 B 0644
cache.h File 644 B 0644
cacheflush.h File 4.12 KB 0644
checksum.h File 942 B 0644
cmpxchg.h File 919 B 0644
cpuinfo.h File 2.13 KB 0644
cputable.h File 1 B 0644
current.h File 850 B 0644
delay.h File 2.26 KB 0644
dma-mapping.h File 765 B 0644
dma.h File 706 B 0644
elf.h File 738 B 0644
entry.h File 1.13 KB 0644
exceptions.h File 2.08 KB 0644
fixmap.h File 1.96 KB 0644
flat.h File 2.26 KB 0644
ftrace.h File 641 B 0644
futex.h File 2.13 KB 0644
hash.h File 2.37 KB 0644
highmem.h File 2.2 KB 0644
hw_irq.h File 1 B 0644
io.h File 2.05 KB 0644
irq.h File 538 B 0644
irqflags.h File 2.6 KB 0644
kgdb.h File 739 B 0644
mmu.h File 4.19 KB 0644
mmu_context.h File 141 B 0644
mmu_context_mm.h File 3.91 KB 0644
module.h File 840 B 0644
page.h File 6.11 KB 0644
pci-bridge.h File 4.57 KB 0644
pci.h File 2.47 KB 0644
pgalloc.h File 4.74 KB 0644
pgtable.h File 17.66 KB 0644
processor.h File 4.11 KB 0644
prom.h File 713 B 0644
ptrace.h File 727 B 0644
pvr.h File 8.72 KB 0644
registers.h File 1.65 KB 0644
seccomp.h File 256 B 0644
sections.h File 637 B 0644
setup.h File 1.37 KB 0644
string.h File 630 B 0644
switch_to.h File 629 B 0644
syscall.h File 2.26 KB 0644
thread_info.h File 4.01 KB 0644
timex.h File 402 B 0644
tlb.h File 714 B 0644
tlbflush.h File 2.04 KB 0644
uaccess.h File 9.98 KB 0644
unaligned.h File 871 B 0644
unistd.h File 1.19 KB 0644
unwind.h File 719 B 0644
user.h File 1 B 0644