mirror of https://gitee.com/openkylin/linux.git
71 lines
2.0 KiB
C
71 lines
2.0 KiB
C
#ifndef _SPARC_VADDRS_H
|
|
#define _SPARC_VADDRS_H
|
|
|
|
#include <asm/head.h>
|
|
|
|
/*
|
|
* asm/vaddrs.h: Here we define the virtual addresses at
|
|
* which important things will be mapped.
|
|
*
|
|
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
|
|
* Copyright (C) 2000 Anton Blanchard (anton@samba.org)
|
|
*/
|
|
|
|
#define SRMMU_MAXMEM 0x0c000000
|
|
|
|
#define SRMMU_NOCACHE_VADDR (KERNBASE + SRMMU_MAXMEM)
|
|
/* = 0x0fc000000 */
|
|
/* XXX Empiricals - this needs to go away - KMW */
|
|
#define SRMMU_MIN_NOCACHE_PAGES (550)
|
|
#define SRMMU_MAX_NOCACHE_PAGES (1280)
|
|
|
|
/* The following constant is used in mm/srmmu.c::srmmu_nocache_calcsize()
|
|
* to determine the amount of memory that will be reserved as nocache:
|
|
*
|
|
* 256 pages will be taken as nocache per each
|
|
* SRMMU_NOCACHE_ALCRATIO MB of system memory.
|
|
*
|
|
* limits enforced: nocache minimum = 256 pages
|
|
* nocache maximum = 1280 pages
|
|
*/
|
|
#define SRMMU_NOCACHE_ALCRATIO 64 /* 256 pages per 64MB of system RAM */
|
|
|
|
#ifndef __ASSEMBLY__
|
|
#include <asm/kmap_types.h>
|
|
|
|
enum fixed_addresses {
|
|
FIX_HOLE,
|
|
#ifdef CONFIG_HIGHMEM
|
|
FIX_KMAP_BEGIN,
|
|
FIX_KMAP_END = (KM_TYPE_NR * NR_CPUS),
|
|
#endif
|
|
__end_of_fixed_addresses
|
|
};
|
|
#endif
|
|
|
|
/* Leave one empty page between IO pages at 0xfd000000 and
|
|
* the top of the fixmap.
|
|
*/
|
|
#define FIXADDR_TOP (0xfcfff000UL)
|
|
#define FIXADDR_SIZE ((FIX_KMAP_END + 1) << PAGE_SHIFT)
|
|
#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
|
|
|
|
#define __fix_to_virt(x) (FIXADDR_TOP - ((x) << PAGE_SHIFT))
|
|
|
|
#define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */
|
|
#define IOBASE_VADDR 0xfe000000
|
|
#define IOBASE_END 0xfe600000
|
|
|
|
#define KADB_DEBUGGER_BEGVM 0xffc00000 /* Where kern debugger is in virt-mem */
|
|
#define KADB_DEBUGGER_ENDVM 0xffd00000
|
|
#define DEBUG_FIRSTVADDR KADB_DEBUGGER_BEGVM
|
|
#define DEBUG_LASTVADDR KADB_DEBUGGER_ENDVM
|
|
|
|
#define LINUX_OPPROM_BEGVM 0xffd00000
|
|
#define LINUX_OPPROM_ENDVM 0xfff00000
|
|
|
|
#define DVMA_VADDR 0xfff00000 /* Base area of the DVMA on suns */
|
|
#define DVMA_END 0xfffc0000
|
|
|
|
#endif /* !(_SPARC_VADDRS_H) */
|