1 /* $NetBSD: cpu.h,v 1.6 2003/01/17 23:13:11 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. 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 void cpu_proc_fork(struct proc *, struct proc *); 82 83 /* 84 * Arguments to hardclock and gatherstats encapsulate the previous 85 * machine state in an opaque clockframe. One the luna68k, we use 86 * what the hardware pushes on an interrupt (frame format 0). 87 */ 88 struct clockframe { 89 u_short sr; /* sr at time of interrupt */ 90 u_long pc; /* pc at time of interrupt */ 91 u_short vo; /* vector offset (4-word frame) */ 92 }; 93 94 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 95 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 96 #define CLKF_PC(framep) ((framep)->pc) 97 #if 0 98 /* We would like to do it this way... */ 99 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 100 #else 101 /* but until we start using PSL_M, we have to do this instead */ 102 #define CLKF_INTR(framep) (0) /* XXX */ 103 #endif 104 105 106 /* 107 * Preempt the current process if in interrupt from user mode, 108 * or after the current trap/syscall if in system mode. 109 */ 110 #define need_resched(ci) { want_resched = 1; aston(); } 111 112 /* 113 * Give a profiling tick to the current process when the user profiling 114 * buffer pages are invalid. On the hp300, request an ast to send us 115 * through trap, marking the proc as needing a profiling tick. 116 */ 117 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 118 119 /* 120 * Notify the current process (p) that it has a signal pending, 121 * process as soon as possible. 122 */ 123 #define signotify(p) aston() 124 125 #define aston() (astpending = 1) 126 127 extern int astpending; /* need to trap before returning to user mode */ 128 extern int want_resched; /* resched() was called */ 129 130 /* 131 * simulated software interrupt register 132 */ 133 extern unsigned char ssir; 134 135 #define SIR_NET 0x1 136 #define SIR_CLOCK 0x2 137 138 #define siron(x) \ 139 __asm __volatile ("orb %0,%1" : : "di" ((u_char)(x)), "g" (ssir)) 140 #define siroff(x) \ 141 __asm __volatile ("andb %0,%1" : : "di" ((u_char)~(x)), "g" (ssir)) 142 143 #define setsoftnet() siron(SIR_NET) 144 #define setsoftclock() siron(SIR_CLOCK) 145 146 #endif /* _KERNEL */ 147 148 /* 149 * CTL_MACHDEP definitions. 150 */ 151 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 152 #define CPU_MAXID 2 /* number of valid machdep ids */ 153 154 #define CTL_MACHDEP_NAMES { \ 155 { 0, 0 }, \ 156 { "console_device", CTLTYPE_STRUCT }, \ 157 } 158 159 /* 160 * Values for machtype 161 */ 162 #define LUNA_I 1 163 #define LUNA_II 2 164 165 #ifdef _KERNEL 166 extern int machtype; 167 extern char *intiobase, *intiolimit; /* XXX */ 168 extern u_int intiobase_phys, intiotop_phys; /* XXX */ 169 170 /* machdep.c functions */ 171 void dumpconf __P((void)); 172 void dumpsys __P((void)); 173 174 /* locore.s functions */ 175 struct pcb; 176 struct fpframe; 177 int suline __P((caddr_t, caddr_t)); 178 void savectx __P((struct pcb *)); 179 void switch_exit __P((struct lwp *)); 180 void switch_lwp_exit __P((struct lwp *)); 181 void proc_trampoline __P((void)); 182 void loadustp __P((int)); 183 void m68881_save __P((struct fpframe *)); 184 void m68881_restore __P((struct fpframe *)); 185 186 /* machdep.c functions */ 187 int badaddr __P((caddr_t, int)); 188 189 /* sys_machdep.c functions */ 190 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 191 int dma_cachectl __P((caddr_t, int)); 192 193 /* vm_machdep.c functions */ 194 void physaccess __P((caddr_t, caddr_t, int, int)); 195 void physunaccess __P((caddr_t, int)); 196 int kvtop __P((caddr_t)); 197 198 #endif 199 200 #endif /* _MACHINE_CPU_H */ 201