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      1 /*	$NetBSD: pmap.h,v 1.43 2023/01/06 10:28:28 tsutsui Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1991 Regents of the University of California.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * the Systems Programming Group of the University of Utah Computer
      9  * Science Department.
     10  *
     11  * Redistribution and use in source and binary forms, with or without
     12  * modification, are permitted provided that the following conditions
     13  * are met:
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in the
     18  *    documentation and/or other materials provided with the distribution.
     19  * 3. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)pmap.h	7.6 (Berkeley) 5/10/91
     36  */
     37 
     38 /*
     39  * Copyright (c) 1987 Carnegie-Mellon University
     40  *
     41  * This code is derived from software contributed to Berkeley by
     42  * the Systems Programming Group of the University of Utah Computer
     43  * Science Department.
     44  *
     45  * Redistribution and use in source and binary forms, with or without
     46  * modification, are permitted provided that the following conditions
     47  * are met:
     48  * 1. Redistributions of source code must retain the above copyright
     49  *    notice, this list of conditions and the following disclaimer.
     50  * 2. Redistributions in binary form must reproduce the above copyright
     51  *    notice, this list of conditions and the following disclaimer in the
     52  *    documentation and/or other materials provided with the distribution.
     53  * 3. All advertising materials mentioning features or use of this software
     54  *    must display the following acknowledgement:
     55  *	This product includes software developed by the University of
     56  *	California, Berkeley and its contributors.
     57  * 4. Neither the name of the University nor the names of its contributors
     58  *    may be used to endorse or promote products derived from this software
     59  *    without specific prior written permission.
     60  *
     61  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     62  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     63  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     64  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     65  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     66  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     67  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     68  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     69  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     70  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     71  * SUCH DAMAGE.
     72  *
     73  *	@(#)pmap.h	7.6 (Berkeley) 5/10/91
     74  */
     75 
     76 #ifndef	_MACHINE_PMAP_H_
     77 #define	_MACHINE_PMAP_H_
     78 
     79 #include <m68k/pmap_motorola.h>
     80 
     81 /*
     82  * Description of the memory segments. Build in atari_init/start_c().
     83  * This gives a better separation between machine dependent stuff and
     84  * the pmap-module.
     85  */
     86 #define NMEM_SEGS	8
     87 struct memseg {
     88 	paddr_t start;		/* PA of first page in segment	*/
     89 	paddr_t end;		/* PA of last  page in segment	*/
     90 	int     first_page;	/* relative page# of 'start'	*/
     91 	int	free_list;	/* Memory priority, lower = faster */
     92 };
     93 
     94 #ifdef	_KERNEL
     95 /*
     96  * Memory segment descriptors.
     97  *  - boot_segs
     98  *	describes the segments obtained from the bootcode.
     99  *  - usable_segs
    100  *	describes the segments available after system requirements are
    101  *	subtracted (reserved pages, etc...).
    102  */
    103 extern struct memseg	boot_segs[NMEM_SEGS];
    104 extern struct memseg	usable_segs[NMEM_SEGS];
    105 
    106 void	pmap_bootstrap(vaddr_t);
    107 
    108 #endif	/* _KERNEL */
    109 
    110 #endif	/* !_MACHINE_PMAP_H_ */
    111