1 /* $NetBSD: cpu.h,v 1.28 2003/01/18 07:14:20 thorpej 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 void cpu_proc_fork(struct proc *, struct proc *); 92 93 /* 94 * Arguments to hardclock and gatherstats encapsulate the previous 95 * machine state in an opaque clockframe. One the x68k, we use 96 * what the hardware pushes on an interrupt (frame format 0). 97 */ 98 struct clockframe { 99 u_short sr; /* sr at time of interrupt */ 100 u_long pc; /* pc at time of interrupt */ 101 u_short vo; /* vector offset (4-word frame) */ 102 }; 103 104 #define CLKF_USERMODE(framep) (((framep)->sr & PSL_S) == 0) 105 #define CLKF_BASEPRI(framep) (((framep)->sr & PSL_IPL) == 0) 106 #define CLKF_PC(framep) ((framep)->pc) 107 #if 0 108 /* We would like to do it this way... */ 109 #define CLKF_INTR(framep) (((framep)->sr & PSL_M) == 0) 110 #else 111 /* but until we start using PSL_M, we have to do this instead */ 112 #define CLKF_INTR(framep) (0) /* XXX */ 113 #endif 114 115 116 /* 117 * Preempt the current process if in interrupt from user mode, 118 * or after the current trap/syscall if in system mode. 119 */ 120 extern int want_resched; /* resched() was called */ 121 #define need_resched(ci) { want_resched++; aston(); } 122 123 /* 124 * Give a profiling tick to the current process when the user profiling 125 * buffer pages are invalid. On the x68k, request an ast to send us 126 * through trap, marking the proc as needing a profiling tick. 127 */ 128 #define need_proftick(p) { (p)->p_flag |= P_OWEUPC; aston(); } 129 130 /* 131 * Notify the current process (p) that it has a signal pending, 132 * process as soon as possible. 133 */ 134 #define signotify(p) aston() 135 136 extern int astpending; /* need to trap before returning to user mode */ 137 #define aston() (astpending++) 138 139 #endif /* _KERNEL */ 140 141 /* 142 * CTL_MACHDEP definitions. 143 */ 144 #define CPU_CONSDEV 1 /* dev_t: console terminal device */ 145 #define CPU_MAXID 2 /* number of valid machdep ids */ 146 147 #define CTL_MACHDEP_NAMES { \ 148 { 0, 0 }, \ 149 { "console_device", CTLTYPE_STRUCT }, \ 150 } 151 152 /* 153 * The rest of this should probably be moved to <machine/x68kcpu.h> 154 * although some of it could probably be put into generic 68k headers. 155 */ 156 157 #ifdef _KERNEL 158 extern int machineid; 159 extern char *intiolimit; 160 161 /* autoconf.c functions */ 162 void config_console __P((void)); 163 164 /* fpu.c functions */ 165 int fpu_probe __P((void)); 166 167 /* machdep.c functions */ 168 void dumpconf __P((void)); 169 void dumpsys __P((void)); 170 171 /* locore.s functions */ 172 struct pcb; 173 struct fpframe; 174 int suline __P((caddr_t, caddr_t)); 175 void savectx __P((struct pcb *)); 176 void switch_exit __P((struct lwp *)); 177 void switch_lwp_exit __P((struct lwp *)); 178 void proc_trampoline __P((void)); 179 void loadustp __P((int)); 180 void m68881_save __P((struct fpframe *)); 181 void m68881_restore __P((struct fpframe *)); 182 183 /* machdep.c functions */ 184 int badaddr __P((caddr_t)); 185 int badbaddr __P((caddr_t)); 186 187 /* sys_machdep.c functions */ 188 int cachectl1 __P((unsigned long, vaddr_t, size_t, struct proc *)); 189 int dma_cachectl __P((caddr_t, int)); 190 191 /* vm_machdep.c functions */ 192 void physaccess __P((caddr_t, caddr_t, int, int)); 193 void physunaccess __P((caddr_t, int)); 194 int kvtop __P((caddr_t)); 195 196 #endif 197 198 /* physical memory sections */ 199 #define INTIOBASE (0x00C00000) 200 #define INTIOTOP (0x01000000) 201 202 /* 203 * Internal IO space: 204 * 205 * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE). 206 * 207 * Internal IO space is mapped in the kernel from ``IODEVbase'' to 208 * ``intiolimit'' (defined in locore.s). Since it is always mapped, 209 * conversion between physical and kernel virtual addresses is easy. 210 */ 211 #define IIOPOFF(pa) ((int)(pa)-INTIOBASE) 212 #define IIOMAPSIZE btoc(INTIOTOP-INTIOBASE) /* 4mb */ 213 214 #endif /* _X68K_CPU_H_ */ 215