1 /* $NetBSD: cpu.h,v 1.5 2001/05/30 12:28:45 mrg 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. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 * 40 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 41 * 42 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 43 */ 44 45 #ifndef _MACHINE_CPU_H 46 #define _MACHINE_CPU_H 47 48 #if defined(_KERNEL_OPT) 49 #include "opt_lockdebug.h" 50 #endif 51 52 /* 53 * Get common m68k CPU definitions. 54 */ 55 #include <m68k/cpu.h> 56 #define M68K_MMU_MOTOROLA 57 58 #include <sys/sched.h> 59 struct cpu_info { 60 struct schedstate_percpu ci_schedstate; /* scheduler state */ 61 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 62 u_long ci_spin_locks; /* # of spin locks held */ 63 u_long ci_simple_locks; /* # of simple locks held */ 64 #endif 65 }; 66 67 #ifdef _KERNEL 68 extern struct cpu_info cpu_info_store; 69 70 #define curcpu() (&cpu_info_store) 71 72 /* 73 * definitions of cpu-dependent requirements 74 * referenced in generic code 75 */ 76 #define cpu_swapin(p) /* nothing */ 77 #define cpu_wait(p) /* nothing */ 78 #define cpu_swapout(p) /* nothing */ 79 #define cpu_number() 0 80 81 /* 82 * Arguments to hardclock and gatherstats encapsulate the previous 83 * machine state in an opaque clockframe. One the luna68k, we use 84 * what the hardware pushes on an interrupt (frame format 0). 85 */ 86 struct clockframe { 87 u_short sr; /* sr at time of interrupt */ 88 u_long pc; /* pc at time of interrupt */ 89 u_short vo; /* vector offset (4-word frame) */ 90 }; 91 92 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 93 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 94 #define CLKF_PC(framep) ((framep)->pc) 95 #if 0 96 /* We would like to do it this way... */ 97 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 98 #else 99 /* but until we start using PSL_M, we have to do this instead */ 100 #define CLKF_INTR(framep) (0) /* XXX */ 101 #endif 102 103 104 /* 105 * Preempt the current process if in interrupt from user mode, 106 * or after the current trap/syscall if in system mode. 107 */ 108 #define need_resched(ci) { want_resched = 1; aston(); } 109 110 /* 111 * Give a profiling tick to the current process when the user profiling 112 * buffer pages are invalid. On the hp300, request an ast to send us 113 * through trap, marking the proc as needing a profiling tick. 114 */ 115 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 116 117 /* 118 * Notify the current process (p) that it has a signal pending, 119 * process as soon as possible. 120 */ 121 #define signotify(p) aston() 122 123 #define aston() (astpending = 1) 124 125 extern int astpending; /* need to trap before returning to user mode */ 126 extern int want_resched; /* resched() was called */ 127 128 /* 129 * simulated software interrupt register 130 */ 131 extern unsigned char ssir; 132 133 #define SIR_NET 0x1 134 #define SIR_CLOCK 0x2 135 136 #define siron(x) \ 137 __asm __volatile ("orb %0,%1" : : "di" ((u_char)(x)), "g" (ssir)) 138 #define siroff(x) \ 139 __asm __volatile ("andb %0,%1" : : "di" ((u_char)~(x)), "g" (ssir)) 140 141 #define setsoftnet() siron(SIR_NET) 142 #define setsoftclock() siron(SIR_CLOCK) 143 144 #endif /* _KERNEL */ 145 146 /* 147 * CTL_MACHDEP definitions. 148 */ 149 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 150 #define CPU_MAXID 2 /* number of valid machdep ids */ 151 152 #define CTL_MACHDEP_NAMES { \ 153 { 0, 0 }, \ 154 { "console_device", CTLTYPE_STRUCT }, \ 155 } 156 157 /* 158 * Values for machtype 159 */ 160 #define LUNA_I 1 161 #define LUNA_II 2 162 163 #ifdef _KERNEL 164 extern int machtype; 165 extern char *intiobase, *intiolimit; /* XXX */ 166 extern u_int intiobase_phys, intiotop_phys; /* XXX */ 167 168 /* machdep.c functions */ 169 void dumpconf __P((void)); 170 void dumpsys __P((void)); 171 172 /* locore.s functions */ 173 struct pcb; 174 struct fpframe; 175 int suline __P((caddr_t, caddr_t)); 176 void savectx __P((struct pcb *)); 177 void switch_exit __P((struct proc *)); 178 void proc_trampoline __P((void)); 179 void loadustp __P((int)); 180 void m68881_save __P((struct fpframe *)); 181 void m68881_restore __P((struct fpframe *)); 182 183 /* machdep.c functions */ 184 int badaddr __P((caddr_t, int)); 185 186 /* sys_machdep.c functions */ 187 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 188 int dma_cachectl __P((caddr_t, int)); 189 190 /* vm_machdep.c functions */ 191 void physaccess __P((caddr_t, caddr_t, int, int)); 192 void physunaccess __P((caddr_t, int)); 193 int kvtop __P((caddr_t)); 194 195 #endif 196 197 #endif /* _MACHINE_CPU_H */ 198