35110949ce
hardware-assisted soft interrupts on all boards. (Note: VMEChip2-less 162/172 not yet tested) This greatly simplifies the `rei' path and allows interrupt nesting to be tracked somewhat more easily. As a result we now have a working CLKF_INTR() macro and can detect uvm_fault() being called from an interrupt (although there may still be a very short race detecting the latter; need to investigate further).
219 lines
6.4 KiB
C
219 lines
6.4 KiB
C
/* $NetBSD: cpu.h,v 1.24 2001/07/06 19:00:13 scw 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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/*
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* Exported definitions unique to mvme68k/68k cpu support.
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*/
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#if defined(_KERNEL_OPT)
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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 mvme68k, 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 fmt:4,
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vec:12; /* vector offset (4-word frame) */
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} __attribute__((packed));
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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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/*
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* The clock interrupt handler can determine if it's a nested
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* interrupt by checking for interrupt_depth > 1.
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* (Remember, the clock interrupt handler itself will cause the
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* depth counter to be incremented).
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*/
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extern volatile unsigned int interrupt_depth;
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#define CLKF_INTR(framep) (interrupt_depth > 1)
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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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extern int want_resched; /* resched() was called */
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#define need_resched(ci) { want_resched++; 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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extern int astpending; /* need to trap before returning to user mode */
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#define aston() (astpending++)
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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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#ifdef _KERNEL
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/*
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* Associate MVME models with CPU types.
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*/
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/*
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* MVME-147; 68030 CPU
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*/
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#if defined(MVME147) && !defined(M68030)
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#define M68030
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#endif
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/*
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* MVME-162/166/167; 68040 CPU
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*/
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#if (defined(MVME162) || defined(MVME167)) && !defined(M68040)
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#define M68040
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#endif
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/*
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* MVME-172/177; 68060 CPU
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*/
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#if (defined(MVME172) || defined(MVME177)) && !defined(M68060)
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#define M68060
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#endif
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#endif /* _KERNEL */
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/*
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* Values for machineid; these match the Bug's values.
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*/
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#define MVME_147 0x147
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#define MVME_162 0x162
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#define MVME_166 0x166
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#define MVME_167 0x167
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#define MVME_172 0x172
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#define MVME_177 0x177
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#ifdef _KERNEL
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extern int machineid;
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extern int cpuspeed;
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extern char *intiobase, *intiolimit;
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extern u_int intiobase_phys, intiotop_phys;
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extern u_long ether_data_buff_size;
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extern u_char mvme_ea[6];
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struct frame;
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void doboot __P((int))
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__attribute__((__noreturn__));
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int nmihand __P((void *));
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void mvme68k_abort __P((const char *));
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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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void *iomap __P((u_long, size_t));
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void iounmap __P((void *, size_t));
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paddr_t kvtop __P((caddr_t));
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void loadustp __P((paddr_t));
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/* Prototypes from sys_machdep.c: */
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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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/* physical memory addresses where mvme147's onboard devices live */
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#define INTIOBASE147 (0xfffe0000u)
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#define INTIOTOP147 (0xfffe5000u)
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/* ditto for mvme1[67][27] */
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#define INTIOBASE1xx (0xfff40000u)
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#define INTIOTOP1xx (0xfffd0000u)
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#endif /* _KERNEL */
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#endif /* _MACHINE_CPU_H_ */
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