linux/arch/sparc/include/asm/vaddrs.h

#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 */

#define SUN4M_IOBASE_VADDR	0xfd000000 /* Base for mapping pages */
#define IOBASE_VADDR		0xfe000000
#define IOBASE_END		0xfe600000

/*
 * 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) */
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 02:20:36 +04:00			`#ifndef _SPARC_VADDRS_H`
			`#define _SPARC_VADDRS_H`

			`#include <asm/head.h>`

			`/*`
sparc, sparc64: use arch/sparc/include The majority of this patch was created by the following script: *** ASM=arch/sparc/include/asm mkdir -p $ASM git mv include/asm-sparc64/ftrace.h $ASM git rm include/asm-sparc64/* git mv include/asm-sparc/* $ASM sed -ie 's/asm-sparc64/asm/g' $ASM/* sed -ie 's/asm-sparc/asm/g' $ASM/* *** The rest was an update of the top-level Makefile to use sparc for header files when sparc64 is being build. And a small fixlet to pick up the correct unistd.h from sparc64 code. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> 2008-07-28 01:00:59 +04:00			`* asm/vaddrs.h: Here we define the virtual addresses at`
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! 2005-04-17 02:20:36 +04:00			`* 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 */`

			`#define SUN4M_IOBASE_VADDR 0xfd000000 /* Base for mapping pages */`
			`#define IOBASE_VADDR 0xfe000000`
			`#define IOBASE_END 0xfe600000`

			`/*`
			`* 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) */`