1 /* $NetBSD: cpu.h,v 1.27 2002/10/28 00:55:17 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 _X68K_CPU_H_ 46 #define _X68K_CPU_H_ 47 48 /* 49 * Exported definitions unique to x68k/68k cpu support. 50 */ 51 52 #if defined(_KERNEL_OPT) 53 #include "opt_m680x0.h" 54 #include "opt_lockdebug.h" 55 #endif 56 57 /* 58 * Get common m68k CPU definitions. 59 */ 60 #include <m68k/cpu.h> 61 #define M68K_MMU_MOTOROLA 62 63 /* 64 * Get interrupt glue. 65 */ 66 #include <machine/intr.h> 67 68 #include <sys/sched.h> 69 struct cpu_info { 70 struct schedstate_percpu ci_schedstate; /* scheduler state */ 71 #if defined(DIAGNOSTIC) || defined(LOCKDEBUG) 72 u_long ci_spin_locks; /* # of spin locks held */ 73 u_long ci_simple_locks; /* # of simple locks held */ 74 #endif 75 }; 76 77 #ifdef _KERNEL 78 extern struct cpu_info cpu_info_store; 79 80 #define curcpu() (&cpu_info_store) 81 82 /* 83 * definitions of cpu-dependent requirements 84 * referenced in generic code 85 */ 86 #define cpu_swapin(p) /* nothing */ 87 #define cpu_wait(p) /* nothing */ 88 #define cpu_swapout(p) /* nothing */ 89 #define cpu_number() 0 90 91 /* 92 * Arguments to hardclock and gatherstats encapsulate the previous 93 * machine state in an opaque clockframe. One the x68k, we use 94 * what the hardware pushes on an interrupt (frame format 0). 95 */ 96 struct clockframe { 97 u_short sr; /* sr at time of interrupt */ 98 u_long pc; /* pc at time of interrupt */ 99 u_short vo; /* vector offset (4-word frame) */ 100 }; 101 102 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 103 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 104 #define CLKF_PC(framep) ((framep)->pc) 105 #if 0 106 /* We would like to do it this way... */ 107 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 108 #else 109 /* but until we start using PSL_M, we have to do this instead */ 110 #define CLKF_INTR(framep) (0) /* XXX */ 111 #endif 112 113 114 /* 115 * Preempt the current process if in interrupt from user mode, 116 * or after the current trap/syscall if in system mode. 117 */ 118 extern int want_resched; /* resched() was called */ 119 #define need_resched(ci) { want_resched++; aston(); } 120 121 /* 122 * Give a profiling tick to the current process when the user profiling 123 * buffer pages are invalid. On the x68k, request an ast to send us 124 * through trap, marking the proc as needing a profiling tick. 125 */ 126 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 127 128 /* 129 * Notify the current process (p) that it has a signal pending, 130 * process as soon as possible. 131 */ 132 #define signotify(p) aston() 133 134 extern int astpending; /* need to trap before returning to user mode */ 135 #define aston() (astpending++) 136 137 #endif /* _KERNEL */ 138 139 /* 140 * CTL_MACHDEP definitions. 141 */ 142 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 143 #define CPU_MAXID 2 /* number of valid machdep ids */ 144 145 #define CTL_MACHDEP_NAMES { \ 146 { 0, 0 }, \ 147 { "console_device", CTLTYPE_STRUCT }, \ 148 } 149 150 /* 151 * The rest of this should probably be moved to <machine/x68kcpu.h> 152 * although some of it could probably be put into generic 68k headers. 153 */ 154 155 #ifdef _KERNEL 156 extern int machineid; 157 extern char *intiolimit; 158 159 /* autoconf.c functions */ 160 void config_console __P((void)); 161 162 /* fpu.c functions */ 163 int fpu_probe __P((void)); 164 165 /* machdep.c functions */ 166 void dumpconf __P((void)); 167 void dumpsys __P((void)); 168 169 /* locore.s functions */ 170 struct pcb; 171 struct fpframe; 172 int suline __P((caddr_t, caddr_t)); 173 void savectx __P((struct pcb *)); 174 void switch_exit __P((struct proc *)); 175 void proc_trampoline __P((void)); 176 void loadustp __P((int)); 177 void m68881_save __P((struct fpframe *)); 178 void m68881_restore __P((struct fpframe *)); 179 180 /* machdep.c functions */ 181 int badaddr __P((caddr_t)); 182 int badbaddr __P((caddr_t)); 183 184 /* sys_machdep.c functions */ 185 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 186 int dma_cachectl __P((caddr_t, int)); 187 188 /* vm_machdep.c functions */ 189 void physaccess __P((caddr_t, caddr_t, int, int)); 190 void physunaccess __P((caddr_t, int)); 191 int kvtop __P((caddr_t)); 192 193 #endif 194 195 /* physical memory sections */ 196 #define INTIOBASE (0x00C00000) 197 #define INTIOTOP (0x01000000) 198 199 /* 200 * Internal IO space: 201 * 202 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 203 * 204 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 205 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 206 * conversion between physical and kernel virtual addresses is easy. 207 */ 208 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 209 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 210 211 #endif /* _X68K_CPU_H_ */ 212