200 lines
6.0 KiB
C
200 lines
6.0 KiB
C
/* $NetBSD: cpu.h,v 1.2 2000/05/26 21:19:48 thorpej Exp $ */
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/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: cpu.h 1.16 91/03/25$
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*
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* @(#)cpu.h 8.4 (Berkeley) 1/5/94
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*/
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#ifndef _MACHINE_CPU_H
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#define _MACHINE_CPU_H
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#if defined(_KERNEL) && !defined(_LKM)
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#include "opt_lockdebug.h"
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#endif
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/*
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* Get common m68k CPU definitions.
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*/
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#include <m68k/cpu.h>
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#define M68K_MMU_MOTOROLA
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#include <sys/sched.h>
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struct cpu_info {
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struct schedstate_percpu ci_schedstate; /* scheduler state */
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#if defined(DIAGNOSTIC) || defined(LOCKDEBUG)
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u_long ci_spin_locks; /* # of spin locks held */
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u_long ci_simple_locks; /* # of simple locks held */
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#endif
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};
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#ifdef _KERNEL
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extern struct cpu_info cpu_info_store;
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#define curcpu() (&cpu_info_store)
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/*
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* definitions of cpu-dependent requirements
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* referenced in generic code
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*/
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#define cpu_swapin(p) /* nothing */
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#define cpu_wait(p) /* nothing */
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#define cpu_swapout(p) /* nothing */
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#define cpu_number() 0
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/*
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* Arguments to hardclock and gatherstats encapsulate the previous
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* machine state in an opaque clockframe. One the luna68k, we use
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* what the hardware pushes on an interrupt (frame format 0).
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*/
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struct clockframe {
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u_short sr; /* sr at time of interrupt */
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u_long pc; /* pc at time of interrupt */
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u_short vo; /* vector offset (4-word frame) */
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};
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#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0)
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#define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0)
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#define CLKF_PC(framep) ((framep)->pc)
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#if 0
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/* We would like to do it this way... */
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#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0)
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#else
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/* but until we start using PSL_M, we have to do this instead */
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#define CLKF_INTR(framep) (0) /* XXX */
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#endif
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/*
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* Preempt the current process if in interrupt from user mode,
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* or after the current trap/syscall if in system mode.
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*/
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#define need_resched() { want_resched = 1; aston(); }
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/*
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* Give a profiling tick to the current process when the user profiling
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* buffer pages are invalid. On the hp300, request an ast to send us
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* through trap, marking the proc as needing a profiling tick.
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*/
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#define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); }
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/*
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* Notify the current process (p) that it has a signal pending,
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* process as soon as possible.
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*/
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#define signotify(p) aston()
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#define aston() (astpending = 1)
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extern int astpending; /* need to trap before returning to user mode */
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extern int want_resched; /* resched() was called */
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/*
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* simulated software interrupt register
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*/
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extern unsigned char ssir;
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#define SIR_NET 0x1
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#define SIR_CLOCK 0x2
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#define siron(x) \
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__asm __volatile ("orb %0,%1" : : "di" ((u_char)(x)), "g" (ssir))
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#define siroff(x) \
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__asm __volatile ("andb %0,%1" : : "di" ((u_char)~(x)), "g" (ssir))
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#define setsoftnet() siron(SIR_NET)
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#define setsoftclock() siron(SIR_CLOCK)
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#endif /* _KERNEL */
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/*
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* CTL_MACHDEP definitions.
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*/
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#define CPU_CONSDEV 1 /* dev_t: console terminal device */
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#define CPU_MAXID 2 /* number of valid machdep ids */
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#define CTL_MACHDEP_NAMES { \
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{ 0, 0 }, \
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{ "console_device", CTLTYPE_STRUCT }, \
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}
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/*
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* Values for machtype
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*/
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#define LUNA_I 1
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#define LUNA_II 2
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#ifdef _KERNEL
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extern int machtype;
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extern char *intiobase, *intiolimit; /* XXX */
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extern u_int intiobase_phys, intiotop_phys; /* XXX */
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/* machdep.c functions */
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void dumpconf __P((void));
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void dumpsys __P((void));
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/* locore.s functions */
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struct pcb;
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struct fpframe;
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int suline __P((caddr_t, caddr_t));
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void savectx __P((struct pcb *));
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void switch_exit __P((struct proc *));
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void proc_trampoline __P((void));
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void loadustp __P((int));
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void m68881_save __P((struct fpframe *));
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void m68881_restore __P((struct fpframe *));
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/* machdep.c functions */
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int badaddr __P((caddr_t, int));
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/* sys_machdep.c functions */
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int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *));
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int dma_cachectl __P((caddr_t, int));
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/* vm_machdep.c functions */
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void physaccess __P((caddr_t, caddr_t, int, int));
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void physunaccess __P((caddr_t, int));
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int kvtop __P((caddr_t));
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/* trap.c functions */
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void child_return __P((void *));
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#endif
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#endif /* _MACHINE_CPU_H */
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