32 lines
1.2 KiB
C
32 lines
1.2 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _ASM_FIXMAP_H
|
||
|
|
#define _ASM_FIXMAP_H
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This file defines the locations of the fixed mappings on parisc.
|
||
|
|
*
|
||
|
|
* All of the values in this file are machine virtual addresses.
|
||
|
|
*
|
||
|
|
* All of the values in this file must be <4GB (because of assembly
|
||
|
|
* loading restrictions). If you place this region anywhere above
|
||
|
|
* __PAGE_OFFSET, you must adjust the memory map accordingly */
|
||
|
|
|
||
|
|
/* The alias region is used in kernel space to do copy/clear to or
|
||
|
|
* from areas congruently mapped with user space. It is 8MB large
|
||
|
|
* and must be 16MB aligned */
|
||
|
|
#define TMPALIAS_MAP_START ((__PAGE_OFFSET) - 16*1024*1024)
|
||
|
|
/* This is the kernel area for all maps (vmalloc, dma etc.) most
|
||
|
|
* usually, it extends up to TMPALIAS_MAP_START. Virtual addresses
|
||
|
|
* 0..GATEWAY_PAGE_SIZE are reserved for the gateway page */
|
||
|
|
#define KERNEL_MAP_START (GATEWAY_PAGE_SIZE)
|
||
|
|
#define KERNEL_MAP_END (TMPALIAS_MAP_START)
|
||
|
|
|
||
|
|
#ifndef __ASSEMBLY__
|
||
|
|
extern void *parisc_vmalloc_start;
|
||
|
|
#define PCXL_DMA_MAP_SIZE (8*1024*1024)
|
||
|
|
#define VMALLOC_START ((unsigned long)parisc_vmalloc_start)
|
||
|
|
#define VMALLOC_END (KERNEL_MAP_END)
|
||
|
|
#endif /*__ASSEMBLY__*/
|
||
|
|
|
||
|
|
#endif /*_ASM_FIXMAP_H*/
|