4a04d76c65
kernel addressed to uncached space. Add prototypes for pmax-specific TC functions used in probing for a framebuffer console.
112 lines
3.5 KiB
C
112 lines
3.5 KiB
C
/* $NetBSD: tc_machdep.h,v 1.3 1996/04/14 00:55:19 jonathan Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 1994, 1995 Carnegie-Mellon University.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Jonathan Stone, Chris G. Demetriou
|
|
*
|
|
* Permission to use, copy, modify and distribute this software and
|
|
* its documentation is hereby granted, provided that both the copyright
|
|
* notice and this permission notice appear in all copies of the
|
|
* software, derivative works or modified versions, and any portions
|
|
* thereof, and that both notices appear in supporting documentation.
|
|
*
|
|
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
|
|
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
|
|
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
|
|
*
|
|
* Carnegie Mellon requests users of this software to return to
|
|
*
|
|
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
|
|
* School of Computer Science
|
|
* Carnegie Mellon University
|
|
* Pittsburgh PA 15213-3890
|
|
*
|
|
* any improvements or extensions that they make and grant Carnegie the
|
|
* rights to redistribute these changes.
|
|
*/
|
|
|
|
/*
|
|
* Machine-specific definitions for TurboChannel support.
|
|
*
|
|
* This file must typedef the following types:
|
|
*
|
|
* tc_addr_t TurboChannel bus address
|
|
* tc_offset_t TurboChannel bus address difference (offset)
|
|
*
|
|
* This file must prototype or define the following functions
|
|
* or macros (one or more of which may be no-ops):
|
|
*
|
|
* tc_mb() read/write memory barrier (any CPU<->memory
|
|
* reads/writes before must complete before any
|
|
* CPU<->memory reads/writes after).
|
|
* tc_wmb() write memory barrier (any CPU<->memory writes
|
|
* before must complete before any CPU<->memory
|
|
* writes after).
|
|
* tc_syncbus() sync TC bus; make sure CPU writes are
|
|
* propagated across the TurboChannel bus.
|
|
* tc_badaddr() return non-zero if the given address is invalid.
|
|
* TC_DENSE_TO_SPARSE()
|
|
* convert the given physical address in
|
|
* TurboChannel dense space to the corresponding
|
|
* address in TurboChannel sparse space.
|
|
* TC_PHYS_TO_UNCACHED()
|
|
* convert the given system memory physical address
|
|
* to the physical address of the corresponding
|
|
* region that is not cached.
|
|
*/
|
|
|
|
#ifndef __MACHINE_TC_MACHDEP_H__
|
|
#define __MACHINE_TC_MACHDEP_H__
|
|
|
|
#include <mips/cpuregs.h> /* defines MACH_PHYS_TO_UNCACHED */
|
|
|
|
typedef int32_t tc_addr_t;
|
|
typedef int32_t tc_offset_t;
|
|
|
|
#define tc_mb() wbflush()
|
|
#define tc_wmb() wbflush()
|
|
|
|
/*
|
|
* XXX how to do this on a DECstation ?
|
|
*/
|
|
#define tc_syncbus() wbflush();
|
|
|
|
#define tc_badaddr(tcaddr) \
|
|
badaddr((void *)(tcaddr), sizeof (u_int32_t))
|
|
|
|
#define TC_DENSE_TO_SPARSE(addr) (addr)
|
|
|
|
#define TC_PHYS_TO_UNCACHED(addr) MACH_PHYS_TO_UNCACHED(addr)
|
|
|
|
|
|
/*
|
|
* Use the following macros to compare device names on a pmax, as
|
|
* the autoconfig structs are in a state of flux.
|
|
*/
|
|
struct confargs;
|
|
|
|
#define TC_BUS_MATCHNAME(ca, name) \
|
|
(strncmp( (ca)->ca_name, (name), TC_ROM_LLEN+1) == 0)
|
|
|
|
/*
|
|
* Port-specific declarations:
|
|
* Declarations "private" sys/dev/tc/tc.c MI functions used to search
|
|
* for potential TC-option console devices (framebuffers),
|
|
*/
|
|
int tc_checkslot __P((tc_addr_t slotbase, char *namep));
|
|
|
|
/*
|
|
* And declarations for the MD function used to search for and configure
|
|
* a TC framebuffer as system console, and to configure the TC bus
|
|
* (the last is a hack).
|
|
*/
|
|
|
|
extern int tc_findconsole __P((int preferred_slot));
|
|
extern void config_tcbus __P((struct device *parent, int cputype,
|
|
int printfn __P((void*, char*)) ));
|
|
|
|
|
|
#endif /* __MACHINE_TC_MACHDEP_H__*/
|