cpu.h revision 1.29
1 /* $NetBSD: cpu.h,v 1.29 2003/08/07 16:30:26 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1990, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * the Systems Programming Group of the University of Utah Computer 9 * Science Department. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 36 * 37 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 38 */ 39 /* 40 * Copyright (c) 1988 University of Utah. 41 * 42 * This code is derived from software contributed to Berkeley by 43 * the Systems Programming Group of the University of Utah Computer 44 * Science Department. 45 * 46 * Redistribution and use in source and binary forms, with or without 47 * modification, are permitted provided that the following conditions 48 * are met: 49 * 1. Redistributions of source code must retain the above copyright 50 * notice, this list of conditions and the following disclaimer. 51 * 2. Redistributions in binary form must reproduce the above copyright 52 * notice, this list of conditions and the following disclaimer in the 53 * documentation and/or other materials provided with the distribution. 54 * 3. All advertising materials mentioning features or use of this software 55 * must display the following acknowledgement: 56 * This product includes software developed by the University of 57 * California, Berkeley and its contributors. 58 * 4. Neither the name of the University nor the names of its contributors 59 * may be used to endorse or promote products derived from this software 60 * without specific prior written permission. 61 * 62 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 63 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 64 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 65 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 66 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 67 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 68 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 69 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 70 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 71 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 72 * SUCH DAMAGE. 73 * 74 * from: Utah $Hdr: cpu.h 1.16 91/03/25$ 75 * 76 * @(#)cpu.h 8.4 (Berkeley) 1/5/94 77 */ 78 79 #ifndef _X68K_CPU_H_ 80 #define _X68K_CPU_H_ 81 82 /* 83 * Exported definitions unique to x68k/68k cpu support. 84 */ 85 86 #if defined(_KERNEL_OPT) 87 #include "opt_m680x0.h" 88 #include "opt_lockdebug.h" 89 #endif 90 91 /* 92 * Get common m68k CPU definitions. 93 */ 94 #include <m68k/cpu.h> 95 #define M68K_MMU_MOTOROLA 96 97 /* 98 * Get interrupt glue. 99 */ 100 #include <machine/intr.h> 101 102 #include <sys/sched.h> 103 struct cpu_info { 104 struct schedstate_percpu ci_schedstate; /* scheduler state */ 105 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 106 u_long ci_spin_locks; /* # of spin locks held */ 107 u_long ci_simple_locks; /* # of simple locks held */ 108 #endif 109 }; 110 111 #ifdef _KERNEL 112 extern struct cpu_info cpu_info_store; 113 114 #define curcpu() (&cpu_info_store) 115 116 /* 117 * definitions of cpu-dependent requirements 118 * referenced in generic code 119 */ 120 #define cpu_swapin(p) /* nothing */ 121 #define cpu_wait(p) /* nothing */ 122 #define cpu_swapout(p) /* nothing */ 123 #define cpu_number() 0 124 125 void cpu_proc_fork(struct proc *, struct proc *); 126 127 /* 128 * Arguments to hardclock and gatherstats encapsulate the previous 129 * machine state in an opaque clockframe. One the x68k, we use 130 * what the hardware pushes on an interrupt (frame format 0). 131 */ 132 struct clockframe { 133 u_short sr; /* sr at time of interrupt */ 134 u_long pc; /* pc at time of interrupt */ 135 u_short vo; /* vector offset (4-word frame) */ 136 }; 137 138 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 139 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 140 #define CLKF_PC(framep) ((framep)->pc) 141 #if 0 142 /* We would like to do it this way... */ 143 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 144 #else 145 /* but until we start using PSL_M, we have to do this instead */ 146 #define CLKF_INTR(framep) (0) /* XXX */ 147 #endif 148 149 150 /* 151 * Preempt the current process if in interrupt from user mode, 152 * or after the current trap/syscall if in system mode. 153 */ 154 extern int want_resched; /* resched() was called */ 155 #define need_resched(ci) { want_resched++; aston(); } 156 157 /* 158 * Give a profiling tick to the current process when the user profiling 159 * buffer pages are invalid. On the x68k, request an ast to send us 160 * through trap, marking the proc as needing a profiling tick. 161 */ 162 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 163 164 /* 165 * Notify the current process (p) that it has a signal pending, 166 * process as soon as possible. 167 */ 168 #define signotify(p) aston() 169 170 extern int astpending; /* need to trap before returning to user mode */ 171 #define aston() (astpending++) 172 173 #endif /* _KERNEL */ 174 175 /* 176 * CTL_MACHDEP definitions. 177 */ 178 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 179 #define CPU_MAXID 2 /* number of valid machdep ids */ 180 181 #define CTL_MACHDEP_NAMES { \ 182 { 0, 0 }, \ 183 { "console_device", CTLTYPE_STRUCT }, \ 184 } 185 186 /* 187 * The rest of this should probably be moved to <machine/x68kcpu.h> 188 * although some of it could probably be put into generic 68k headers. 189 */ 190 191 #ifdef _KERNEL 192 extern int machineid; 193 extern char *intiolimit; 194 195 /* autoconf.c functions */ 196 void config_console __P((void)); 197 198 /* fpu.c functions */ 199 int fpu_probe __P((void)); 200 201 /* machdep.c functions */ 202 void dumpconf __P((void)); 203 void dumpsys __P((void)); 204 205 /* locore.s functions */ 206 struct pcb; 207 struct fpframe; 208 int suline __P((caddr_t, caddr_t)); 209 void savectx __P((struct pcb *)); 210 void switch_exit __P((struct lwp *)); 211 void switch_lwp_exit __P((struct lwp *)); 212 void proc_trampoline __P((void)); 213 void loadustp __P((int)); 214 void m68881_save __P((struct fpframe *)); 215 void m68881_restore __P((struct fpframe *)); 216 217 /* machdep.c functions */ 218 int badaddr __P((caddr_t)); 219 int badbaddr __P((caddr_t)); 220 221 /* sys_machdep.c functions */ 222 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 223 int dma_cachectl __P((caddr_t, int)); 224 225 /* vm_machdep.c functions */ 226 void physaccess __P((caddr_t, caddr_t, int, int)); 227 void physunaccess __P((caddr_t, int)); 228 int kvtop __P((caddr_t)); 229 230 #endif 231 232 /* physical memory sections */ 233 #define INTIOBASE (0x00C00000) 234 #define INTIOTOP (0x01000000) 235 236 /* 237 * Internal IO space: 238 * 239 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 240 * 241 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 242 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 243 * conversion between physical and kernel virtual addresses is easy. 244 */ 245 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 246 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 247 248 #endif /* _X68K_CPU_H_ */ 249
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