1 /* $NetBSD: cpu.h,v 1.4 2001/07/26 15:46:58 drochner 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 57 #include <sys/sched.h> 58 struct cpu_info { 59 struct schedstate_percpu ci_schedstate; /* scheduler state */ 60 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 61 u_long ci_spin_locks; /* # of spin locks held */ 62 u_long ci_simple_locks; /* # of simple locks held */ 63 #endif 64 }; 65 66 #ifdef _KERNEL 67 extern struct cpu_info cpu_info_store; 68 69 #define curcpu() (&cpu_info_store) 70 71 /* 72 * definitions of cpu-dependent requirements 73 * referenced in generic code 74 */ 75 #define cpu_swapin(p) /* nothing */ 76 #define cpu_wait(p) /* nothing */ 77 #define cpu_swapout(p) /* nothing */ 78 #define cpu_number() 0 79 80 /* 81 * Arguments to hardclock and gatherstats encapsulate the previous 82 * machine state in an opaque clockframe. One the hp300, we use 83 * what the hardware pushes on an interrupt (frame format 0). 84 */ 85 struct clockframe { 86 u_short sr; /* sr at time of interrupt */ 87 u_long pc; /* pc at time of interrupt */ 88 u_short vo; /* vector offset (4-word frame) */ 89 } __attribute__((packed)); 90 91 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 92 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 93 #define CLKF_PC(framep) ((framep)->pc) 94 #if 0 95 /* We would like to do it this way... */ 96 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 97 #else 98 /* but until we start using PSL_M, we have to do this instead */ 99 #define CLKF_INTR(framep) (0) /* XXX */ 100 #endif 101 102 103 /* 104 * Preempt the current process if in interrupt from user mode, 105 * or after the current trap/syscall if in system mode. 106 */ 107 extern int want_resched; /* resched() was called */ 108 #define need_resched(ci) { want_resched++; 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 extern int astpending; /* need to trap before returning to user mode */ 124 #define aston() (astpending++) 125 126 /* 127 * simulated software interrupt register 128 */ 129 extern unsigned char ssir; 130 131 #define SIR_NET 0x1 132 #define SIR_CLOCK 0x2 133 #define SIR_ZS 0x4 134 135 #define siroff(x) ssir &= ~(x) 136 #define setsoftnet() ssir |= SIR_NET 137 #define setsoftclock() ssir |= SIR_CLOCK 138 #define setsoftzs() ssir |= SIR_ZS 139 140 void softzs __P((void)); 141 142 #endif /* _KERNEL */ 143 144 /* 145 * CTL_MACHDEP definitions. 146 */ 147 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 148 #define CPU_MAXID 2 /* number of valid machdep ids */ 149 150 #define CTL_MACHDEP_NAMES { \ 151 { 0, 0 }, \ 152 { "console_device", CTLTYPE_STRUCT }, \ 153 } 154 155 #ifdef _KERNEL 156 157 #ifndef M68040 158 #define M68040 159 #endif /* ! M68040 */ 160 161 #ifndef M68K_MMU_MOTOROLA 162 #define M68K_MMU_MOTOROLA 163 #endif /* ! M68K_MMU_MOTOROLA */ 164 165 struct frame; 166 struct fpframe; 167 struct pcb; 168 169 /* locore.s functions */ 170 void m68881_save __P((struct fpframe *)); 171 void m68881_restore __P((struct fpframe *)); 172 void DCIA __P((void)); 173 void DCIS __P((void)); 174 void DCIU __P((void)); 175 void ICIA __P((void)); 176 void ICPA __P((void)); 177 void PCIA __P((void)); 178 void TBIA __P((void)); 179 void TBIS __P((vaddr_t)); 180 void TBIAS __P((void)); 181 void TBIAU __P((void)); 182 #if defined(M68040) 183 void DCFA __P((void)); 184 void DCFP __P((paddr_t)); 185 void DCFL __P((paddr_t)); 186 void DCPL __P((paddr_t)); 187 void DCPP __P((paddr_t)); 188 void ICPL __P((paddr_t)); 189 void ICPP __P((paddr_t)); 190 #endif 191 int suline __P((caddr_t, caddr_t)); 192 void savectx __P((struct pcb *)); 193 void switch_exit __P((struct proc *)); 194 void proc_trampoline __P((void)); 195 void loadustp __P((int)); 196 197 void doboot __P((void)) 198 __attribute__((__noreturn__)); 199 200 /* machdep.c functions */ 201 int badaddr __P((caddr_t)); 202 int badbaddr __P((caddr_t)); 203 204 /* sys_machdep.c functions */ 205 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 206 207 /* vm_machdep.c functions */ 208 void physaccess __P((caddr_t, caddr_t, int, int)); 209 void physunaccess __P((caddr_t, int)); 210 int kvtop __P((caddr_t)); 211 212 void kgdb_panic __P((void)); 213 214 /* what is this supposed to do? i.e. how is it different than startrtclock? */ 215 #define enablertclock() 216 217 #endif /* _KERNEL */ 218 219 #endif /* _MACHINE_CPU_H_ */ 220