sys/arch/pmax/include/tc_machdep.h

   1 /*      $NetBSD: tc_machdep.h,v 1.17 2000/02/29 04:41:59 nisimura Exp $ */
   2
   3 /*
   4  * Copyright (c) 1994, 1995 Carnegie-Mellon University.
   5  * All rights reserved.
   6  *
   7  * Author: Jonathan Stone, Chris G. Demetriou
   8  *
   9  * Permission to use, copy, modify and distribute this software and
  10  * its documentation is hereby granted, provided that both the copyright
  11  * notice and this permission notice appear in all copies of the
  12  * software, derivative works or modified versions, and any portions
  13  * thereof, and that both notices appear in supporting documentation.
  14  *
  15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
  16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
  17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
  18  *
  19  * Carnegie Mellon requests users of this software to return to
  20  *
  21  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
  22  *  School of Computer Science
  23  *  Carnegie Mellon University
  24  *  Pittsburgh PA 15213-3890
  25  *
  26  * any improvements or extensions that they make and grant Carnegie the
  27  * rights to redistribute these changes.
  28  */
  29
  30 /*
  31  * Machine-specific definitions for TURBOchannel support.
  32  *
  33  * This file must typedef the following types:
  34  *
  35  *      tc_addr_t       TURBOchannel bus address
  36  *      tc_offset_t     TURBOchannel bus address difference (offset)
  37  *
  38  * This file must prototype or define the following functions
  39  * or macros (one or more of which may be no-ops):
  40  *
  41  *      tc_mb()         read/write memory barrier (any CPU<->memory
  42  *                      reads/writes before must complete before any
  43  *                      CPU<->memory reads/writes after).
  44  *      tc_wmb()        write memory barrier (any CPU<->memory writes
  45  *                      before must complete before any CPU<->memory
  46  *                      writes after).
  47  *      tc_syncbus()    sync TC bus; make sure CPU writes are
  48  *                      propagated across the TURBOchannel bus.
  49  *      tc_badaddr()    return non-zero if the given address is invalid.
  50  *      TC_DENSE_TO_SPARSE()
  51  *                      convert the given physical address in
  52  *                      TURBOchannel dense space to the corresponding
  53  *                      address in TURBOchannel sparse space.
  54  *      TC_PHYS_TO_UNCACHED()
  55  *                      convert the given system memory physical address
  56  *                      to the physical address of the corresponding
  57  *                      region that is not cached.
  58  */
  59
  60 #ifndef _PMAX_TC_MACHDEP_H_
  61 #define _PMAX_TC_MACHDEP_H_
  62
  63 #include <mips/cpuregs.h>               /* defines MIPS_PHYS_TO_KSEG1 */
  64
  65 typedef paddr_t         tc_addr_t;
  66 typedef int32_t         tc_offset_t;
  67
  68 #define tc_mb()         wbflush()
  69 #define tc_wmb()        wbflush()
  70 #define tc_syncbus()    wbflush() /* XXX how to do this on a DECstation ? */
  71
  72 #define tc_badaddr(tcaddr) badaddr((void *)(tcaddr), sizeof (uint32_t))
  73
  74 #define TC_DENSE_TO_SPARSE(addr)  (addr)
  75
  76 #define TC_PHYS_TO_UNCACHED(addr) MIPS_PHYS_TO_KSEG1(addr)
  77
  78 /*
  79  * Use the following macros to compare device names on a pmax, as
  80  * the autoconfig structs are in a state of flux.
  81  */
  82 #define TC_BUS_MATCHNAME(ta, name) \
  83                 (strncmp( (ta)->ta_modname, (name), TC_ROM_LLEN+1) == 0)
  84
  85 #define KV(x)   ((tc_addr_t)MIPS_PHYS_TO_KSEG1(x))
  86 #define C(x)    ((void *)(u_long)(x))
  87
  88 #endif  /* !_PMAX_TC_MACHDEP_H_ */