NetBSD/sys/arch/sun3/include/cpu.h

141 lines
4.8 KiB
C

/* Copyright (c) 1993 Adam Glass
* 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.
*
* from: Utah $Hdr: cpu.h 1.16 91/03/25$
*
* from: @(#)cpu.h 7.7 (Berkeley) 6/27/91
* cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp
*/
/*
* Exported definitions unique to sun3/68k cpu support.
*/
/*
* 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 */
#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.
*/
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. On hp300, 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 */
/* values for machineid */
#define CPU_ARCH_MASK 0xf0
#define SUN3_ARCH 0x10
#define SUN3_IMPL_MASK 0x0f
#define SUN3_MACH_160 0x01
#define SUN3_MACH_50 0x02
#define SUN3_MACH_260 0x03
#define SUN3_MACH_110 0x04
#define SUN3_MACH_60 0x07
#define SUN3_MACH_E 0x08
#ifdef KERNEL
extern int machineid, mmutype, ectype;
extern char *intiobase, *intiolimit;
#endif
/* 680X0 function codes */
#define FC_USERD 1 /* user data space */
#define FC_USERP 2 /* user program space */
#define FC_CONTROL 3 /* HPMMU: clear TLB entries */
#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 */