1 /* $NetBSD: cpu.h,v 1.50 2010/06/06 04:52:01 mrg 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 #if defined(_KERNEL) 83 84 /* 85 * Exported definitions unique to x68k/68k cpu support. 86 */ 87 88 #if defined(_KERNEL_OPT) 89 #include "opt_m68k_arch.h" 90 #include "opt_lockdebug.h" 91 #endif 92 93 /* 94 * Get common m68k CPU definitions. 95 */ 96 #include <m68k/cpu.h> 97 #define M68K_MMU_MOTOROLA 98 99 /* 100 * Get interrupt glue. 101 */ 102 #include <machine/intr.h> 103 104 #include <sys/cpu_data.h> 105 struct cpu_info { 106 struct cpu_data ci_data; /* MI per-cpu data */ 107 cpuid_t ci_cpuid; 108 int ci_mtx_count; 109 int ci_mtx_oldspl; 110 int ci_want_resched; 111 }; 112 113 extern struct cpu_info cpu_info_store; 114 115 #define curcpu() (&cpu_info_store) 116 117 /* 118 * definitions of cpu-dependent requirements 119 * referenced in generic code 120 */ 121 #define cpu_number() 0 122 123 void cpu_proc_fork(struct proc *, struct proc *); 124 125 /* 126 * Arguments to hardclock and gatherstats encapsulate the previous 127 * machine state in an opaque clockframe. One the x68k, we use 128 * what the hardware pushes on an interrupt (frame format 0). 129 */ 130 struct clockframe { 131 u_short sr; /* sr at time of interrupt */ 132 u_long pc; /* pc at time of interrupt */ 133 u_short vo; /* vector offset (4-word frame) */ 134 }; 135 136 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 137 #define CLKF_PC(framep) ((framep)->pc) 138 #if 0 139 /* We would like to do it this way... */ 140 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 141 #else 142 /* but until we start using PSL_M, we have to do this instead */ 143 #define CLKF_INTR(framep) (0) /* XXX */ 144 #endif 145 146 147 /* 148 * Preempt the current process if in interrupt from user mode, 149 * or after the current trap/syscall if in system mode. 150 */ 151 #define cpu_need_resched(ci, flags) \ 152 do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0) 153 154 /* 155 * Give a profiling tick to the current process when the user profiling 156 * buffer pages are invalid. On the x68k, request an ast to send us 157 * through trap, marking the proc as needing a profiling tick. 158 */ 159 #define cpu_need_proftick(l) \ 160 do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0) 161 162 /* 163 * Notify the current process (p) that it has a signal pending, 164 * process as soon as possible. 165 */ 166 #define cpu_signotify(l) aston() 167 168 extern int astpending; /* need to trap before returning to user mode */ 169 #define aston() (astpending++) 170 171 #endif /* _KERNEL */ 172 173 /* 174 * CTL_MACHDEP definitions. 175 */ 176 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 177 #define CPU_MAXID 2 /* number of valid machdep ids */ 178 179 /* 180 * The rest of this should probably be moved to <machine/x68kcpu.h> 181 * although some of it could probably be put into generic 68k headers. 182 */ 183 184 #ifdef _KERNEL 185 extern int machineid; 186 extern char *intiobase; 187 extern char *intiolimit; 188 189 /* fpu.c functions */ 190 int fpu_probe(void); 191 192 /* machdep.c functions */ 193 void dumpsys(void); 194 195 /* locore.s functions */ 196 struct fpframe; 197 int suline(void *, void *); 198 void loadustp(int); 199 void m68881_save(struct fpframe *); 200 void m68881_restore(struct fpframe *); 201 202 /* machdep.c functions */ 203 int badaddr(volatile void*); 204 int badbaddr(volatile void*); 205 206 #endif 207 208 /* physical memory sections */ 209 #define INTIOBASE (0x00C00000) 210 #define INTIOTOP (0x01000000) 211 212 /* 213 * Internal IO space: 214 * 215 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 216 * 217 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 218 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 219 * conversion between physical and kernel virtual addresses is easy. 220 */ 221 #define IIOV(pa) ((u_int)(pa) - INTIOBASE + (u_int)intiobase) 222 #define IIOP(va) ((u_int)(va) - (u_int)intiobase + INTIOBASE) 223 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 224 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 225 226 #endif /* _X68K_CPU_H_ */ 227