1 /* $NetBSD: cpu.h,v 1.26 2002/10/20 02:37:29 chs 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 /* 49 * Exported definitions unique to mvme68k/68k cpu support. 50 */ 51 52 #if defined(_KERNEL_OPT) 53 #include "opt_lockdebug.h" 54 #endif 55 56 /* 57 * Get common m68k CPU definitions. 58 */ 59 #include <m68k/cpu.h> 60 #define M68K_MMU_MOTOROLA 61 62 #include <sys/sched.h> 63 struct cpu_info { 64 struct schedstate_percpu ci_schedstate; /* scheduler state */ 65 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 66 u_long ci_spin_locks; /* # of spin locks held */ 67 u_long ci_simple_locks; /* # of simple locks held */ 68 #endif 69 }; 70 71 #ifdef _KERNEL 72 extern struct cpu_info cpu_info_store; 73 74 #define curcpu() (&cpu_info_store) 75 76 /* 77 * definitions of cpu-dependent requirements 78 * referenced in generic code 79 */ 80 #define cpu_swapin(p) /* nothing */ 81 #define cpu_wait(p) /* nothing */ 82 #define cpu_swapout(p) /* nothing */ 83 #define cpu_number() 0 84 85 /* 86 * Arguments to hardclock and gatherstats encapsulate the previous 87 * machine state in an opaque clockframe. One the mvme68k, we use 88 * what the hardware pushes on an interrupt (frame format 0). 89 */ 90 struct clockframe { 91 u_short sr; /* sr at time of interrupt */ 92 u_long pc; /* pc at time of interrupt */ 93 u_short fmt:4, 94 vec:12; /* vector offset (4-word frame) */ 95 } __attribute__((packed)); 96 97 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 98 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 99 #define CLKF_PC(framep) ((framep)->pc) 100 101 /* 102 * The clock interrupt handler can determine if it's a nested 103 * interrupt by checking for interrupt_depth > 1. 104 * (Remember, the clock interrupt handler itself will cause the 105 * depth counter to be incremented). 106 */ 107 extern volatile unsigned int interrupt_depth; 108 #define CLKF_INTR(framep) (interrupt_depth > 1) 109 110 111 /* 112 * Preempt the current process if in interrupt from user mode, 113 * or after the current trap/syscall if in system mode. 114 */ 115 extern int want_resched; /* resched() was called */ 116 #define need_resched(ci) { want_resched++; aston(); } 117 118 /* 119 * Give a profiling tick to the current process when the user profiling 120 * buffer pages are invalid. On the hp300, request an ast to send us 121 * through trap, marking the proc as needing a profiling tick. 122 */ 123 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 124 125 /* 126 * Notify the current process (p) that it has a signal pending, 127 * process as soon as possible. 128 */ 129 #define signotify(p) aston() 130 131 extern int astpending; /* need to trap before returning to user mode */ 132 #define aston() (astpending++) 133 134 #endif /* _KERNEL */ 135 136 /* 137 * CTL_MACHDEP definitions. 138 */ 139 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 140 #define CPU_MAXID 2 /* number of valid machdep ids */ 141 142 #define CTL_MACHDEP_NAMES { \ 143 { 0, 0 }, \ 144 { "console_device", CTLTYPE_STRUCT }, \ 145 } 146 147 #ifdef _KERNEL 148 /* 149 * Associate MVME models with CPU types. 150 */ 151 #define MVME68K 1 152 153 /* 154 * MVME-147; 68030 CPU 155 */ 156 #if defined(MVME147) && !defined(M68030) 157 #define M68030 158 #endif 159 160 /* 161 * MVME-162/166/167; 68040 CPU 162 */ 163 #if (defined(MVME162) || defined(MVME167)) && !defined(M68040) 164 #define M68040 165 #endif 166 167 /* 168 * MVME-172/177; 68060 CPU 169 */ 170 #if (defined(MVME172) || defined(MVME177)) && !defined(M68060) 171 #define M68060 172 #endif 173 #endif /* _KERNEL */ 174 175 /* 176 * Values for machineid; these match the Bug's values. 177 */ 178 #define MVME_147 0x147 179 #define MVME_162 0x162 180 #define MVME_166 0x166 181 #define MVME_167 0x167 182 #define MVME_172 0x172 183 #define MVME_177 0x177 184 185 #ifdef _KERNEL 186 extern int machineid; 187 extern int cpuspeed; 188 extern char *intiobase, *intiolimit; 189 extern u_int intiobase_phys, intiotop_phys; 190 extern u_long ether_data_buff_size; 191 extern u_char mvme_ea[6]; 192 193 struct frame; 194 struct pcb; 195 void doboot __P((int)) 196 __attribute__((__noreturn__)); 197 int nmihand __P((void *)); 198 void mvme68k_abort __P((const char *)); 199 void physaccess __P((caddr_t, caddr_t, int, int)); 200 void physunaccess __P((caddr_t, int)); 201 void *iomap __P((u_long, size_t)); 202 void iounmap __P((void *, size_t)); 203 int kvtop __P((caddr_t)); 204 void savectx __P((struct pcb *)); 205 void switch_exit __P((struct proc *)); 206 void proc_trampoline __P((void)); 207 void loadustp __P((paddr_t)); 208 209 /* Prototypes from sys_machdep.c: */ 210 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 211 int dma_cachectl __P((caddr_t, int)); 212 213 /* physical memory addresses where mvme147's onboard devices live */ 214 #define INTIOBASE147 (0xfffe0000u) 215 #define INTIOTOP147 (0xfffe5000u) 216 217 /* ditto for mvme1[67][27] */ 218 #define INTIOBASE1xx (0xfff40000u) 219 #define INTIOTOP1xx (0xfffd0000u) 220 221 #endif /* _KERNEL */ 222 223 #endif /* _MACHINE_CPU_H_ */ 224