cpu.h revision 1.58
1/* $NetBSD: cpu.h,v 1.58 2014/07/31 14:41:19 isaki Exp $ */ 2 3/* 4 * Copyright (c) 1988 University of Utah. 5 * Copyright (c) 1982, 1990, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * the Systems Programming Group of the University of Utah Computer 10 * Science Department. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 37 * 38 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 39 */ 40 41#ifndef _X68K_CPU_H_ 42#define _X68K_CPU_H_ 43 44#if defined(_KERNEL_OPT) 45#include "opt_m68k_arch.h" 46#include "opt_lockdebug.h" 47#endif 48 49/* 50 * Get common m68k CPU definitions. 51 */ 52#include <m68k/cpu.h> 53 54#if defined(_KERNEL) 55/* 56 * Exported definitions unique to x68k/68k cpu support. 57 */ 58#define M68K_MMU_MOTOROLA 59 60/* 61 * Get interrupt glue. 62 */ 63#include <machine/intr.h> 64 65/* 66 * Arguments to hardclock and gatherstats encapsulate the previous 67 * machine state in an opaque clockframe. One the x68k, we use 68 * what the hardware pushes on an interrupt (frame format 0). 69 */ 70struct clockframe { 71 u_short sr; /* sr at time of interrupt */ 72 u_long pc; /* pc at time of interrupt */ 73 u_short vo; /* vector offset (4-word frame) */ 74}; 75 76#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 77#define CLKF_PC(framep) ((framep)->pc) 78#if 0 79/* We would like to do it this way... */ 80#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 81#else 82/* but until we start using PSL_M, we have to do this instead */ 83#define CLKF_INTR(framep) (0) /* XXX */ 84#endif 85 86 87/* 88 * Preempt the current process if in interrupt from user mode, 89 * or after the current trap/syscall if in system mode. 90 */ 91#define cpu_need_resched(ci,flags) do { \ 92 __USE(flags); \ 93 ci->ci_want_resched = 1; \ 94 aston(); \ 95} while (/*CONSTCOND*/0) 96 97/* 98 * Give a profiling tick to the current process when the user profiling 99 * buffer pages are invalid. On the x68k, request an ast to send us 100 * through trap, marking the proc as needing a profiling tick. 101 */ 102#define cpu_need_proftick(l) \ 103 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 104 105/* 106 * Notify the current process (p) that it has a signal pending, 107 * process as soon as possible. 108 */ 109#define cpu_signotify(l) aston() 110 111extern int astpending; /* need to trap before returning to user mode */ 112#define aston() (astpending++) 113 114#endif /* _KERNEL */ 115 116/* 117 * CTL_MACHDEP definitions. 118 */ 119#define CPU_CONSDEV 1 /* dev_t: console terminal device */ 120#define CPU_MAXID 2 /* number of valid machdep ids */ 121 122/* 123 * The rest of this should probably be moved to <machine/x68kcpu.h> 124 * although some of it could probably be put into generic 68k headers. 125 */ 126 127#ifdef _KERNEL 128extern uint8_t *intiobase; 129extern uint8_t *intiolimit; 130 131/* machdep.c functions */ 132void dumpsys(void); 133 134/* locore.s functions */ 135int suline(void *, void *); 136void loadustp(int); 137 138/* machdep.c functions */ 139int badaddr(volatile void*); 140int badbaddr(volatile void*); 141 142#endif 143 144/* physical memory sections */ 145#define INTIOBASE (0x00C00000) 146#define INTIOTOP (0x01000000) 147 148/* 149 * Internal IO space: 150 * 151 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 152 * 153 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 154 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 155 * conversion between physical and kernel virtual addresses is easy. 156 */ 157#define IIOV(pa) ((u_int)(pa) - INTIOBASE + (u_int)intiobase) 158#define IIOP(va) ((u_int)(va) - (u_int)intiobase + INTIOBASE) 159#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 160#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 161 162#endif /* _X68K_CPU_H_ */ 163