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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _ASM_FIXMAP_H
2#define _ASM_FIXMAP_H
3
4/*
5 * This file defines the locations of the fixed mappings on parisc.
6 *
7 * All of the values in this file are machine virtual addresses.
8 *
9 * All of the values in this file must be <4GB (because of assembly
10 * loading restrictions). If you place this region anywhere above
11 * __PAGE_OFFSET, you must adjust the memory map accordingly */
12
13/* The alias region is used in kernel space to do copy/clear to or
14 * from areas congruently mapped with user space. It is 8MB large
15 * and must be 16MB aligned */
16#define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024)
17/* This is the kernel area for all maps (vmalloc, dma etc.) most
18 * usually, it extends up to TMPALIAS_MAP_START. Virtual addresses
19 * 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
20#define KERNEL_MAP_START (GATEWAY_PAGE_SIZE)
21#define KERNEL_MAP_END (TMPALIAS_MAP_START)
22
Kyle McMartind912e1d2008-02-18 14:13:43 -080023#ifndef __ASSEMBLY__
24extern void *vmalloc_start;
25#define PCXL_DMA_MAP_SIZE (8*1024*1024)
26#define VMALLOC_START ((unsigned long)vmalloc_start)
27#define VMALLOC_END (KERNEL_MAP_END)
28#endif /*__ASSEMBLY__*/
29
30#endif /*_ASM_FIXMAP_H*/