cpu.h revision 1.65
1/* $NetBSD: cpu.h,v 1.65 2024/01/18 14:39:07 thorpej 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_lockdebug.h" 46#endif 47 48/* 49 * Get common m68k CPU definitions. 50 */ 51#include <m68k/cpu.h> 52 53#if defined(_KERNEL) 54/* 55 * Get interrupt glue. 56 */ 57#include <machine/intr.h> 58 59/* 60 * Arguments to hardclock and gatherstats encapsulate the previous 61 * machine state in an opaque clockframe. On the x68k, we use 62 * what the hardware pushes on an interrupt (frame format 0). 63 */ 64struct clockframe { 65 u_short sr; /* sr at time of interrupt */ 66 u_long pc; /* pc at time of interrupt */ 67 u_short vo; /* vector offset (4-word frame) */ 68}; 69 70#define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 71#define CLKF_PC(framep) ((framep)->pc) 72#if 0 73/* We would like to do it this way... */ 74#define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 75#else 76/* but until we start using PSL_M, we have to do this instead */ 77#define CLKF_INTR(framep) (0) /* XXX */ 78#endif 79 80 81/* 82 * Preempt the current process if in interrupt from user mode, 83 * or after the current trap/syscall if in system mode. 84 */ 85#define cpu_need_resched(ci,l,flags) do { \ 86 __USE(flags); \ 87 aston(); \ 88} while (/*CONSTCOND*/0) 89 90/* 91 * Give a profiling tick to the current process when the user profiling 92 * buffer pages are invalid. On the x68k, request an ast to send us 93 * through trap, marking the proc as needing a profiling tick. 94 */ 95#define cpu_need_proftick(l) \ 96 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 97 98/* 99 * Notify the current process (p) that it has a signal pending, 100 * process as soon as possible. 101 */ 102#define cpu_signotify(l) aston() 103 104extern int astpending; /* need to trap before returning to user mode */ 105#define aston() (astpending++) 106 107/* 108 * The rest of this should probably be moved to <machine/x68kcpu.h> 109 * although some of it could probably be put into generic 68k headers. 110 */ 111 112extern uint8_t *intiobase; 113extern uint8_t *intiolimit; 114 115/* machdep.c functions */ 116void dumpsys(void); 117 118/* machdep.c functions */ 119int badaddr(volatile void*); 120int badbaddr(volatile void*); 121 122#endif 123 124/* physical memory sections */ 125#define INTIOBASE (0x00C00000) 126#define INTIOTOP (0x01000000) 127 128/* 129 * Internal IO space: 130 * 131 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 132 * 133 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 134 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 135 * conversion between physical and kernel virtual addresses is easy. 136 */ 137#define IIOV(pa) ((u_int)(pa) - INTIOBASE + (u_int)intiobase) 138#define IIOP(va) ((u_int)(va) - (u_int)intiobase + INTIOBASE) 139#define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 140#define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 141 142#endif /* _X68K_CPU_H_ */ 143