NetBSD/sys/arch/mac68k/include/cpu.h

256 lines
8.7 KiB
C

/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* the Systems Programming Group of the University of Utah Computer
* Science Department.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
/*
* Copyright (c) 1992, 1993 BCDL Labs. All rights reserved.
* Allen Briggs, Chris Caputo, Michael Finch, Brad Grantham, Lawrence Kesteloot
* Redistribution of this source code or any part thereof is permitted,
* provided that the following conditions are met:
* 1) Utilized source contains the copyright message above, this list
* of conditions, and the following disclaimer.
* 2) Binary objects containing compiled source reproduce the
* copyright notice above on startup.
*
* CAVEAT: This source code is provided "as-is" by BCDL Labs, and any
* warranties of ANY kind are disclaimed. We don't even claim that it
* won't crash your hard disk. Basically, we want a little credit if
* it works, but we don't want to get mail-bombed if it doesn't.
*/
/*
* from: Utah $Hdr: cpu.h 1.16 91/03/25$
*
* from: @(#)cpu.h 7.7 (Berkeley) 6/27/91
* $Id: cpu.h,v 1.3 1993/12/15 03:22:56 briggs Exp $
*/
/*
ALICE
BG -- Sat May 23 23:58:23 EDT 1992
Exported defines and stuff unique to mac68k.
A lot of this stuff is really specific to the m68k, not just the macs,
but there isn't time to do anything about that right now...
*/
/*
* definitions of cpu-dependent requirements
* referenced in generic code
*/
#define COPY_SIGCODE /* copy sigcode above user stack in exec */
/*
* function vs. inline configuration;
* these are defined to get generic functions
* rather than inline or machine-dependent implementations
*/
#define NEED_MINMAX /* need {,i,l,ul}{min,max} functions */
#undef NEED_FFS /* don't need ffs function */
#undef NEED_BCMP /* don't need bcmp function */
#undef NEED_STRLEN /* don't need strlen function */
/* ALICE BG -- Sun May 24 11:31:35 EDT 1992 -- what the hell do these things */
/* do? */
#define cpu_exec(p) /* nothing */
#define cpu_wait(p) /* nothing */
/*
* Arguments to hardclock, softclock and gatherstats
* encapsulate the previous machine state in an opaque
* clockframe; for hp300, use just what the hardware
* leaves on the stack.
*/
/* ALICE 05/23/92 BG -- Oh, no. What does a VIA intleave on the stack? */
/* ALICE 06/27/92 LK -- Make sure hardware clock routine does this: */
typedef struct intrframe {
int pc;
int ps;
} clockframe;
#define CLKF_USERMODE(framep) (((framep)->ps & PSL_S) == 0)
#define CLKF_BASEPRI(framep) (((framep)->ps & PSL_IPL7) == 0)
#define CLKF_PC(framep) ((framep)->pc)
/*
* Preempt the current process if in interrupt from user mode,
* or after the current trap/syscall if in system mode.
*/
#define need_resched() { want_resched++; aston(); }
/*
* Give a profiling tick to the current process from the softclock
* interrupt. Request an ast to send us through trap(),
* marking the proc as needing a profiling tick.
*/
#define profile_tick(p, framep) { (p)->p_flag |= SOWEUPC; aston(); }
/*
* Notify the current process (p) that it has a signal pending,
* process as soon as possible.
*/
#define signotify(p) aston()
#define aston() (astpending++)
int astpending; /* need to trap before returning to user mode */
int want_resched; /* resched() was called */
/* XXX why is this duplicated in mtpr.h? brad@fcr.com */
/*
* simulated software interrupt register
*/
extern unsigned char ssir;
#define SIR_NET 0x1
#define SIR_CLOCK 0x2
#define SIR_SERIAL 0x4
#define siroff(x) ssir &= ~(x)
#define setsoftnet() ssir |= SIR_NET
#define setsoftclock() ssir |= SIR_CLOCK
#define setsoftserial() ssir |= SIR_SERIAL
/* values for machineid */
/* BARF MF - some values from the thinkc gesalt include file */
#define MACH_MAC2 6
#define MACH_MAC2X 7
#define MACH_MAC2SI 18
#define MACH_MAC2CI 11
#define MACH_MAC2CX 8
#define MACH_MACSE30 9
#define MACH_MAC2FX 13
/* MF processor passed in */
#define MACH_68020 0
#define MACH_68030 1
#define MACH_68040 2
#define MACH_PENTIUM 3 /* 66 and 99 MHz versions *only* */
/* values for cpuspeed (not really related to clock speed due to caches) */
#define MHZ_8 1
#define MHZ_16 2
#define MHZ_25 3
#define MHZ_33 4
#define MHZ_40 5
#ifdef KERNEL
extern int machineid, ectype;
extern char *intiobase, *intiolimit;
extern char *extiobase, *extiolimit;
#endif
/* physical memory sections */
#define ROMBASE (0x40000000)
#define INTIOBASE (0x50000000)
#define INTIOTOP (0x51000000) /* ~ 128 K */
#define IIOMAPSIZE btoc(INTIOTOP - INTIOBASE)
/* ALICE 05/23/92 BG -- These need to be changed. */
#ifdef NO_SUPER_SPACE_YET
#define NBSBASE 0x60000000 /* NUBUS Super space */
#define NBSTOP 0xF0000000
#endif
#define NBBASE 0xF9000000 /* NUBUS space */
#define NBTOP 0xFF000000 /* NUBUS space */
#define NBMAPSIZE btoc(NBTOP-NBBASE) /* ~ 96 megs */
#define NBMEMSIZE 0x01000000 /* 16 megs per card */
#define NBROMOFFSET 0x00FF0000 /* Last 64K == ROM */
/*
* IO space:
*
* Internal IO space is mapped in the kernel from ``intiobase'' to
* ``intiolimit'' (defined in locore.s). Since it is always mapped,
* conversion between physical and kernel virtual addresses is easy.
*/
#define ISIIOVA(va) \
((char *)(va) >= intiobase && (char *)(va) < intiolimit)
#define IIOV(pa) ((int)(pa)-INTIOBASE+(int)intiobase)
#define IIOP(va) ((int)(va)-(int)intiobase+INTIOBASE)
#define IIOPOFF(pa) ((int)(pa)-INTIOBASE)
/*
ALICE 05/24/92,13:25:19 BG -- We need to make sure to map NuBus memory in
the kernel, too.
ALICE 06/29/92,20:40:00 LK -- I did that, thank you very much. Been there.
*/
/*
* 68851 and 68030 MMU
*/
#define PMMU_LVLMASK 0x0007
#define PMMU_INV 0x0400
#define PMMU_WP 0x0800
#define PMMU_ALV 0x1000
#define PMMU_SO 0x2000
#define PMMU_LV 0x4000
#define PMMU_BE 0x8000
#define PMMU_FAULT (PMMU_WP|PMMU_INV)
/* 680X0 function codes */
#define FC_USERD 1 /* user data space */
#define FC_USERP 2 /* user program space */
#define FC_SUPERD 5 /* supervisor data space */
#define FC_SUPERP 6 /* supervisor program space */
#define FC_CPU 7 /* CPU space */
/* fields in the 68020 cache control register */
#define IC_ENABLE 0x0001 /* enable instruction cache */
#define IC_FREEZE 0x0002 /* freeze instruction cache */
#define IC_CE 0x0004 /* clear instruction cache entry */
#define IC_CLR 0x0008 /* clear entire instruction cache */
/* additional fields in the 68030 cache control register */
#define IC_BE 0x0010 /* instruction burst enable */
#define DC_ENABLE 0x0100 /* data cache enable */
#define DC_FREEZE 0x0200 /* data cache freeze */
#define DC_CE 0x0400 /* clear data cache entry */
#define DC_CLR 0x0800 /* clear entire data cache */
#define DC_BE 0x1000 /* data burst enable */
#define DC_WA 0x2000 /* write allocate */
#define CACHE_ON (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
#define CACHE_OFF (DC_CLR|IC_CLR)
#define CACHE_CLR (CACHE_ON)
#define IC_CLEAR (DC_WA|DC_BE|DC_ENABLE|IC_BE|IC_CLR|IC_ENABLE)
#define DC_CLEAR (DC_WA|DC_BE|DC_CLR|DC_ENABLE|IC_BE|IC_ENABLE)