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zbusvar.h revision 1.10 
      1 /*	$NetBSD: zbusvar.h,v 1.10 2011/09/21 12:48:57 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1994 Christian E. Hopps
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed by Christian E. Hopps.
     18  * 4. The name of the author may not be used to endorse or promote products
     19  *    derived from this software without specific prior written permission
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     22  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     23  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     24  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     25  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     26  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     27  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     28  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     29  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     30  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     31  */
     32 #ifndef _ZBUSVAR_H_
     33 #define _ZBUSVAR_H_
     34 
     35 struct zbus_args {
     36 	void *pa;
     37 	void *va;
     38 	int size;
     39 	int slot;
     40 	int manid;
     41 	int prodid;
     42 	int serno;
     43 };
     44 
     45 extern vaddr_t		ZTWOROMADDR;
     46 extern vaddr_t		ZTWOMEMADDR;
     47 extern u_int		NZTWOMEMPG;
     48 extern vaddr_t		ZBUSADDR;	/* kva of Zorro bus I/O pages */
     49 extern u_int		ZBUSAVAIL;	/* bytes of Zorro bus I/O space left */
     50 
     51 #define ZTWOROMBASE	(0x00D80000)
     52 #define ZTWOROMTOP	(0x00F80000)
     53 #define NZTWOROMPG	btoc(ZTWOROMTOP-ZTWOROMBASE)
     54 
     55 void *zbusmap(void *, u_int);
     56 
     57 /*
     58  * maps a ztwo and/or A3000 builtin address into the mapped kva address
     59  */
     60 #if defined(__m68k__)
     61 #define ztwomap(pa) \
     62     ((volatile void *)((u_int)ZTWOROMADDR - ZTWOROMBASE + (u_int)(pa)))
     63 #define ztwopa(va) ((void *)(ZTWOROMBASE + (u_int)(va) - (u_int)ZTWOROMADDR))
     64 #else
     65 #define ztwomap(pa) ((volatile void *)(u_int)(pa))
     66 #define ztwopa(va) ((void *)(u_int)(va))
     67 #endif
     68 
     69 /*
     70  * tests whether the address lies in our zorro2 rom space
     71  */
     72 #define isztwokva(kva) \
     73     ((u_int)(kva) >= ZTWOROMADDR && \
     74     (u_int)(kva) < \
     75     (ZTWOROMADDR + ZTWOROMTOP - ZTWOROMBASE))
     76 #define isztwopa(pa) ((u_int)(pa) >= ZTWOROMBASE && (u_int)(pa) <= ZTWOROMTOP)
     77 #define isztwomem(kva) \
     78     (ZTWOMEMADDR && (u_int)(kva) >= ZTWOMEMADDR && \
     79     (u_int)(kva) < (ZTWOMEMADDR + NZTWOMEMPG * PAGE_SIZE))
     80 
     81 #define ZTHREEBASE	(0x40000000)
     82 #define ZTHREETOP	((u_long)0x80000000)
     83 #define NZTHREEPG	btoc(ZTHREETOP - ZTHREEBASE)
     84 
     85 #define iszthreepa(pa) ((u_int)(pa) >= ZTHREEBASE && (u_int)(pa) <= ZTHREETOP)
     86 #endif /* _ZBUS_H_ */
     87