/*	$OpenBSD: vmparam.h,v 1.46 2015/06/02 04:31:53 miod Exp $	*/
/*	$NetBSD: vmparam.h,v 1.13 1997/07/12 16:20:03 perry Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * All advertising materials mentioning features or use of this software
 * must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Lawrence Berkeley Laboratory.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)vmparam.h	8.1 (Berkeley) 6/11/93
 */

#ifndef _MACHINE_VMPARAM_H_
#define _MACHINE_VMPARAM_H_

/*
 * Machine dependent constants for SPARC
 */

/*
 * Virtual memory related constants, all in bytes
 */
#ifndef MAXTSIZ
#define	MAXTSIZ		(32*1024*1024)		/* max text size */
#endif
#ifndef DFLDSIZ
#define	DFLDSIZ		(64*1024*1024)		/* initial data size limit */
#endif
#ifndef MAXDSIZ
#define	MAXDSIZ		(256*1024*1024)		/* max data size */
#endif
#ifndef BRKSIZ
#define	BRKSIZ		MAXDSIZ			/* heap gap size */
#endif
#ifndef	DFLSSIZ
#define	DFLSSIZ		(2*1024*1024)		/* initial stack size limit */
#endif
#ifndef	MAXSSIZ
#define	MAXSSIZ		(32*1024*1024)		/* max stack size */
#endif

#define STACKGAP_RANDOM	64*1024
#define STACKGAP_RANDOM_SUN4M 256*1024

/*
 * Size of shared memory map
 */
#ifndef SHMMAXPGS
#define SHMMAXPGS	1024
#endif

/*
 * User/kernel map constants.  Note that sparc/vaddrs.h defines the
 * IO space virtual base, which must be the same as VM_MAX_KERNEL_ADDRESS:
 * tread with care.
 */

#define	VM_MIN_KERNEL_ADDRESS_OLD	((vaddr_t)KERNBASE)
#define	VM_MIN_KERNEL_ADDRESS_SUN4	((vaddr_t)0xf0000000)
#define	VM_MIN_KERNEL_ADDRESS_SRMMU	((vaddr_t)0xc0000000)

#if defined(SMALL_KERNEL)
/* limit to small KVA regardless of the cpu type */
#define	VM_MIN_KERNEL_ADDRESS	VM_MIN_KERNEL_ADDRESS_OLD
#define VM_MAXUSER_ADDRESS	VM_MIN_KERNEL_ADDRESS
#define VM_MAX_ADDRESS		VM_MIN_KERNEL_ADDRESS
#define	USRSTACK		VM_MIN_KERNEL_ADDRESS
#elif (defined(SUN4) || defined(SUN4C) || defined(SUN4E)) && \
      (defined(SUN4D) || defined(SUN4M))
/* user/kernel bound will de determined at run time */
extern vsize_t vm_kernel_space_size;
#define	VM_KERNEL_SPACE_SIZE	vm_kernel_space_size
#define VM_MAXUSER_ADDRESS	vm_min_kernel_address
#define VM_MAX_ADDRESS		vm_min_kernel_address
#define	USRSTACK		vm_min_kernel_address
#elif (defined(SUN4) || defined(SUN4C) || defined(SUN4E))
/* old Sun MMU with address hole */
#define	VM_MIN_KERNEL_ADDRESS	VM_MIN_KERNEL_ADDRESS_SUN4
#define VM_MAXUSER_ADDRESS	VM_MIN_KERNEL_ADDRESS
#define VM_MAX_ADDRESS		VM_MIN_KERNEL_ADDRESS
#define	USRSTACK		VM_MIN_KERNEL_ADDRESS
#else
/* SRMMU without address hole */
#define	VM_MIN_KERNEL_ADDRESS	VM_MIN_KERNEL_ADDRESS_SRMMU
#define VM_MAXUSER_ADDRESS	VM_MIN_KERNEL_ADDRESS
#define VM_MAX_ADDRESS		VM_MIN_KERNEL_ADDRESS
#define	USRSTACK		VM_MIN_KERNEL_ADDRESS
#endif

#define VM_MIN_ADDRESS		((vaddr_t)0x2000)
#define VM_MAX_KERNEL_ADDRESS	((vaddr_t)0xfe000000)

extern vaddr_t vm_pie_max_addr;
#define	VM_PIE_MAX_ADDR vm_pie_max_addr

#define	IOSPACE_BASE		VM_MAX_KERNEL_ADDRESS
#define	IOSPACE_LEN		0x01000000		/* 16 MB of iospace */

#define VM_PHYSSEG_MAX		32	/* we only have one "hole" */
#define VM_PHYSSEG_STRAT	VM_PSTRAT_BSEARCH
#define VM_PHYSSEG_NOADD		/* can't add RAM after vm_mem_init */

#if defined (_KERNEL)
void		dvma_mapout(vaddr_t, vaddr_t, int);
#endif

#endif /* _MACHINE_VMPARAM_H_ */
