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      1  1.3  matt /*	$NetBSD: tc_machdep.h,v 1.3 2008/03/11 05:34:02 matt Exp $	*/
      2  1.1  matt 
      3  1.1  matt /*
      4  1.1  matt  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
      5  1.1  matt  * All rights reserved.
      6  1.1  matt  *
      7  1.1  matt  * Author: Jonathan Stone, Chris G. Demetriou
      8  1.1  matt  *
      9  1.1  matt  * Permission to use, copy, modify and distribute this software and
     10  1.1  matt  * its documentation is hereby granted, provided that both the copyright
     11  1.1  matt  * notice and this permission notice appear in all copies of the
     12  1.1  matt  * software, derivative works or modified versions, and any portions
     13  1.1  matt  * thereof, and that both notices appear in supporting documentation.
     14  1.1  matt  *
     15  1.1  matt  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  1.1  matt  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  1.1  matt  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  1.1  matt  *
     19  1.1  matt  * Carnegie Mellon requests users of this software to return to
     20  1.1  matt  *
     21  1.1  matt  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  1.1  matt  *  School of Computer Science
     23  1.1  matt  *  Carnegie Mellon University
     24  1.1  matt  *  Pittsburgh PA 15213-3890
     25  1.1  matt  *
     26  1.1  matt  * any improvements or extensions that they make and grant Carnegie the
     27  1.1  matt  * rights to redistribute these changes.
     28  1.1  matt  */
     29  1.1  matt 
     30  1.1  matt /*
     31  1.1  matt  * Machine-specific definitions for TURBOchannel support.
     32  1.1  matt  *
     33  1.1  matt  * This file must typedef the following types:
     34  1.1  matt  *
     35  1.1  matt  *	tc_addr_t	TURBOchannel bus address
     36  1.1  matt  *	tc_offset_t	TURBOchannel bus address difference (offset)
     37  1.1  matt  *
     38  1.1  matt  * This file must prototype or define the following functions
     39  1.1  matt  * or macros (one or more of which may be no-ops):
     40  1.1  matt  *
     41  1.1  matt  *	tc_mb()		read/write memory barrier (any CPU<->memory
     42  1.1  matt  *			reads/writes before must complete before any
     43  1.1  matt  *			CPU<->memory reads/writes after).
     44  1.1  matt  *	tc_wmb()	write memory barrier (any CPU<->memory writes
     45  1.1  matt  *			before must complete before any CPU<->memory
     46  1.1  matt  *			writes after).
     47  1.1  matt  *	tc_syncbus()	sync TC bus; make sure CPU writes are
     48  1.1  matt  *			propagated across the TURBOchannel bus.
     49  1.1  matt  *	tc_badaddr()	return non-zero if the given address is invalid.
     50  1.1  matt  *	TC_DENSE_TO_SPARSE()
     51  1.1  matt  *			convert the given physical address in
     52  1.1  matt  *			TURBOchannel dense space to the corresponding
     53  1.1  matt  *			address in TURBOchannel sparse space.
     54  1.1  matt  *	TC_PHYS_TO_UNCACHED()
     55  1.1  matt  *			convert the given system memory physical address
     56  1.1  matt  *			to the physical address of the corresponding
     57  1.1  matt  *			region that is not cached.
     58  1.1  matt  */
     59  1.1  matt 
     60  1.1  matt #ifndef _VAX_TC_MACHDEP_H_
     61  1.1  matt #define _VAX_TC_MACHDEP_H_
     62  1.1  matt 
     63  1.2  matt #include <machine/cpu.h>		/* for badaddr */
     64  1.2  matt 
     65  1.1  matt typedef uint32_t	tc_addr_t;
     66  1.1  matt typedef uint32_t	tc_offset_t;
     67  1.1  matt 
     68  1.1  matt #define	tc_mb()		do { } while (/*CONSTCOND*/ 0)
     69  1.1  matt #define	tc_wmb()	do { } while (/*CONSTCOND*/ 0)
     70  1.1  matt #define	tc_syncbus()	do { } while (/*CONSTCOND*/ 0)
     71  1.1  matt 
     72  1.1  matt #define	tc_badaddr(tcaddr) badaddr((void *)(tcaddr), sizeof (uint32_t))
     73  1.1  matt 
     74  1.1  matt #define	TC_DENSE_TO_SPARSE(addr)  (addr)
     75  1.1  matt #define	TC_PHYS_TO_UNCACHED(addr) (addr)
     76  1.3  matt #define	VAX_PHYS_TO_S0(addr)	  ((addr) | KERNBASE)
     77  1.1  matt 
     78  1.1  matt /*
     79  1.1  matt  * Use the following macros to compare device names on a vax, as
     80  1.1  matt  * the autoconfig structs are in a state of flux.
     81  1.1  matt  */
     82  1.1  matt #define TC_BUS_MATCHNAME(ta, name) \
     83  1.1  matt 	(strncmp( (ta)->ta_modname, (name), TC_ROM_LLEN+1) == 0)
     84  1.1  matt 
     85  1.1  matt #endif /* _VAX_TC_MACHDEP_H_ */
     86