1 /* $NetBSD: cpu.h,v 1.54 2011/05/16 13:22:55 tsutsui 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) 45 46 /* 47 * Exported definitions unique to x68k/68k cpu support. 48 */ 49 50 #if defined(_KERNEL_OPT) 51 #include "opt_m68k_arch.h" 52 #include "opt_lockdebug.h" 53 #endif 54 55 /* 56 * Get common m68k CPU definitions. 57 */ 58 #include <m68k/cpu.h> 59 #define M68K_MMU_MOTOROLA 60 61 /* 62 * Get interrupt glue. 63 */ 64 #include <machine/intr.h> 65 66 /* 67 * Arguments to hardclock and gatherstats encapsulate the previous 68 * machine state in an opaque clockframe. One the x68k, we use 69 * what the hardware pushes on an interrupt (frame format 0). 70 */ 71 struct clockframe { 72 u_short sr; /* sr at time of interrupt */ 73 u_long pc; /* pc at time of interrupt */ 74 u_short vo; /* vector offset (4-word frame) */ 75 }; 76 77 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 78 #define CLKF_PC(framep) ((framep)->pc) 79 #if 0 80 /* We would like to do it this way... */ 81 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 82 #else 83 /* but until we start using PSL_M, we have to do this instead */ 84 #define CLKF_INTR(framep) (0) /* XXX */ 85 #endif 86 87 88 /* 89 * Preempt the current process if in interrupt from user mode, 90 * or after the current trap/syscall if in system mode. 91 */ 92 #define cpu_need_resched(ci, flags) \ 93 do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0) 94 95 /* 96 * Give a profiling tick to the current process when the user profiling 97 * buffer pages are invalid. On the x68k, request an ast to send us 98 * through trap, marking the proc as needing a profiling tick. 99 */ 100 #define cpu_need_proftick(l) \ 101 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 102 103 /* 104 * Notify the current process (p) that it has a signal pending, 105 * process as soon as possible. 106 */ 107 #define cpu_signotify(l) aston() 108 109 extern int astpending; /* need to trap before returning to user mode */ 110 #define aston() (astpending++) 111 112 #endif /* _KERNEL */ 113 114 /* 115 * CTL_MACHDEP definitions. 116 */ 117 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 118 #define CPU_MAXID 2 /* number of valid machdep ids */ 119 120 /* 121 * The rest of this should probably be moved to <machine/x68kcpu.h> 122 * although some of it could probably be put into generic 68k headers. 123 */ 124 125 #ifdef _KERNEL 126 extern int machineid; 127 extern uint8_t *intiobase; 128 extern uint8_t *intiolimit; 129 130 /* fpu.c functions */ 131 int fpu_probe(void); 132 133 /* machdep.c functions */ 134 void dumpsys(void); 135 136 /* locore.s functions */ 137 int suline(void *, void *); 138 void loadustp(int); 139 140 /* machdep.c functions */ 141 int badaddr(volatile void*); 142 int badbaddr(volatile void*); 143 144 #endif 145 146 /* physical memory sections */ 147 #define INTIOBASE (0x00C00000) 148 #define INTIOTOP (0x01000000) 149 150 /* 151 * Internal IO space: 152 * 153 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 154 * 155 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 156 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 157 * conversion between physical and kernel virtual addresses is easy. 158 */ 159 #define IIOV(pa) ((u_int)(pa) - INTIOBASE + (u_int)intiobase) 160 #define IIOP(va) ((u_int)(va) - (u_int)intiobase + INTIOBASE) 161 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 162 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 163 164 #endif /* _X68K_CPU_H_ */ 165