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/* $Id: vaddrs.h,v 1.26 2000/08/01 04:53:58 anton Exp $ */
#ifndef _SPARC_VADDRS_H
#define _SPARC_VADDRS_H
#include <asm/head.h>
/*
* asm-sparc/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@linuxcare.com)
*/
#define SRMMU_MAXMEM 0x0c000000
#define SRMMU_NOCACHE_VADDR 0xfc000000 /* KERNBASE + SRMMU_MAXMEM */
/* XXX Make this dynamic based on ram size - Anton */
#define SRMMU_NOCACHE_NPAGES 256
#define SRMMU_NOCACHE_SIZE (SRMMU_NOCACHE_NPAGES * PAGE_SIZE)
#define SRMMU_NOCACHE_END (SRMMU_NOCACHE_VADDR + SRMMU_NOCACHE_SIZE)
#define FIX_KMAP_BEGIN 0xfc100000
#define FIX_KMAP_END (FIX_KMAP_BEGIN + ((KM_TYPE_NR*NR_CPUS)-1)*PAGE_SIZE)
#define PKMAP_BASE 0xfc140000
#define PKMAP_BASE_END (PKMAP_BASE+LAST_PKMAP*PAGE_SIZE)
#define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */
#define IOBASE_VADDR 0xfe000000
#define IOBASE_END 0xfe300000
#define VMALLOC_START 0xfe300000
/* XXX Alter this when I get around to fixing sun4c - Anton */
#define VMALLOC_END 0xffc00000
/*
* On the sun4/4c we need a place
* to reliably map locked down kernel data. This includes the
* task_struct and kernel stack pages of each process plus the
* scsi buffers during dvma IO transfers, also the floppy buffers
* during pseudo dma which runs with traps off (no faults allowed).
* Some quick calculations yield:
* NR_TASKS <512> * (3 * PAGE_SIZE) == 0x600000
* Subtract this from 0xc00000 and you get 0x927C0 of vm left
* over to map SCSI dvma + floppy pseudo-dma buffers. So be
* careful if you change NR_TASKS or else there won't be enough
* room for it all.
*/
#define SUN4C_LOCK_VADDR 0xff000000
#define SUN4C_LOCK_END 0xffc00000
#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) */
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