| #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) */ |