/* * 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
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 |
|