1 /* $NetBSD: cpu.h,v 1.19 1996/07/20 17:58:12 ragge Exp $ */ 2 3 /* 4 * Copyright (c) 1994 Ludd, University of Lule}, Sweden 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed at Ludd, University of Lule} 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* All bugs are subject to removal without further notice */ 34 35 #include <sys/cdefs.h> 36 #include <sys/device.h> 37 38 #include <machine/mtpr.h> 39 #include <machine/pcb.h> 40 41 #define enablertclock() 42 #define cpu_wait(p) 43 #define cpu_swapout(p) 44 45 extern struct cpu_dep cpu_calls[]; 46 47 struct cpu_dep { 48 void (*cpu_steal_pages) __P((void)); /* pmap init before mm is on */ 49 void (*cpu_clock) __P((void)); /* CPU dep RT clock start */ 50 int (*cpu_mchk) __P((caddr_t)); /* Machine check handling */ 51 void (*cpu_memerr) __P((void)); /* Memory subsystem errors */ 52 /* Autoconfiguration */ 53 void (*cpu_conf) __P((struct device *, struct device *, void *)); 54 int (*cpu_clkread) __P((time_t)); /* Read cpu clock time */ 55 void (*cpu_clkwrite) __P((void)); /* Write system time to cpu */ 56 }; 57 58 struct clockframe { 59 int pc; 60 int ps; 61 }; 62 63 extern int cold; 64 extern int mastercpu; 65 66 #define setsoftnet() mtpr(12,PR_SIRR) 67 #define setsoftclock() mtpr(8,PR_SIRR) 68 #define todr() mfpr(PR_TODR) 69 /* 70 * Preempt the current process if in interrupt from user mode, 71 * or after the current trap/syscall if in system mode. 72 */ 73 74 #define need_resched(){ \ 75 want_resched++; \ 76 mtpr(AST_OK,PR_ASTLVL); \ 77 } 78 79 /* 80 * Notify the current process (p) that it has a signal pending, 81 * process as soon as possible. 82 */ 83 84 #define signotify(p) mtpr(AST_OK,PR_ASTLVL); 85 86 extern int want_resched; /* resched() was called */ 87 88 /* 89 * Give a profiling tick to the current process when the user profiling 90 * buffer pages are invalid. On the hp300, request an ast to send us 91 * through trap, marking the proc as needing a profiling tick. 92 */ 93 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } 94 95 /* Some low-level prototypes */ 96 int badaddr __P((caddr_t, int)); 97 void cpu_set_kpc __P((struct proc *, void (*)(struct proc *))); 98 void cpu_swapin __P((struct proc *)); 99 int hp_getdev __P((int, int, char **)); 100 int ra_getdev __P((int, int, int, char **)); 101 void configure __P((void)); 102 void dumpconf __P((void)); 103 void dumpsys __P((void)); 104 void setroot __P((void)); 105 void setconf __P((void)); 106 void swapconf __P((void)); 107 #ifdef DDB 108 int kdbrint __P((int)); 109 #endif 110