97 lines
3.0 KiB
C
97 lines
3.0 KiB
C
/* $NetBSD: tc_machdep.h,v 1.2 1996/01/29 22:52:27 jonathan Exp $ */
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/*
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* Copyright (c) 1994, 1995 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Jonathan Stone, Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Machine-specific definitions for TurboChannel support.
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*
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* This file must typedef the following types:
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*
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* tc_addr_t TurboChannel bus address
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* tc_offset_t TurboChannel bus address difference (offset)
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*
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* This file must prototype or define the following functions
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* or macros (one or more of which may be no-ops):
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*
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* tc_mb() read/write memory barrier (any CPU<->memory
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* reads/writes before must complete before any
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* CPU<->memory reads/writes after).
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* tc_wmb() write memory barrier (any CPU<->memory writes
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* before must complete before any CPU<->memory
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* writes after).
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* tc_syncbus() sync TC bus; make sure CPU writes are
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* propagated across the TurboChannel bus.
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* tc_badaddr() return non-zero if the given address is invalid.
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* TC_DENSE_TO_SPARSE()
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* convert the given physical address in
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* TurboChannel dense space to the corresponding
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* address in TurboChannel sparse space.
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* TC_PHYS_TO_UNCACHED()
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* convert the given system memory physical address
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* to the physical address of the corresponding
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* region that is not cached.
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*/
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#ifndef __MACHINE_TC_MACHDEP_H__
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#define __MACHINE_TC_MACHDEP_H__
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typedef int32_t tc_addr_t;
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typedef int32_t tc_offset_t;
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#define tc_mb() wbflush()
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#define tc_wmb() wbflush()
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/*
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* XXX how to do this on a DECstation ?
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*/
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#define tc_syncbus() wbflush();
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#define tc_badaddr(tcaddr) \
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badaddr((void *)(tcaddr), sizeof (u_int32_t))
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#define TC_DENSE_TO_SPARSE(addr) \
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(addr)
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#define TC_PHYS_TO_UNCACHED(addr) \
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(addr)
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#define tc_badaddr(tcaddr) \
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badaddr((void *)(tcaddr), sizeof (u_int32_t))
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/*
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* Use the following macros to compare device names on a pmax, as
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* the autoconfig structs are in a state of flux.
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*/
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struct confargs;
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#define TC_BUS_MATCHNAME(ca, name) \
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(strncmp( (ca)->ca_name, (name), TC_ROM_LLEN+1) == 0)
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#endif /* __MACHINE_TC_MACHDEP_H__*/
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