1 /* $NetBSD: cpu.h,v 1.41 1999/10/21 20:01:36 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 #ifndef _VAX_CPU_H_ 34 #define _VAX_CPU_H_ 35 #ifdef _KERNEL 36 37 #include <sys/cdefs.h> 38 #include <sys/device.h> 39 40 #include <machine/mtpr.h> 41 #include <machine/pcb.h> 42 #include <machine/uvax.h> 43 #include <machine/psl.h> 44 45 #define enablertclock() 46 #define cpu_wait(p) 47 #define cpu_swapout(p) 48 #define cpu_number() 0 49 50 /* 51 * All cpu-dependent info is kept in this struct. Pointer to the 52 * struct for the current cpu is set up in locore.c. 53 */ 54 struct cpu_dep { 55 void (*cpu_steal_pages) __P((void)); /* pmap init before mm is on */ 56 int (*cpu_mchk) __P((caddr_t)); /* Machine check handling */ 57 void (*cpu_memerr) __P((void)); /* Memory subsystem errors */ 58 /* Autoconfiguration */ 59 void (*cpu_conf) __P((void)); 60 int (*cpu_clkread) __P((time_t)); /* Read cpu clock time */ 61 void (*cpu_clkwrite) __P((void)); /* Write system time to cpu */ 62 short cpu_vups; /* speed of cpu */ 63 short cpu_scbsz; /* (estimated) size of system control block */ 64 void (*cpu_halt) __P((void)); /* Cpu dependent halt call */ 65 void (*cpu_reboot) __P((int)); /* Cpu dependent reboot call */ 66 void (*cpu_clrf) __P((void)); /* Clear cold/warm start flags */ 67 void (*cpu_subconf) __P((struct device *));/*config cpu dep. devs */ 68 }; 69 70 extern struct cpu_dep *dep_call; /* Holds pointer to current CPU struct. */ 71 72 struct clockframe { 73 int pc; 74 int ps; 75 }; 76 77 extern struct device *booted_from; 78 extern int mastercpu; 79 extern int bootdev; 80 81 #define setsoftnet() mtpr(12,PR_SIRR) 82 #define setsoftclock() mtpr(8,PR_SIRR) 83 #define todr() mfpr(PR_TODR) 84 /* 85 * Preempt the current process if in interrupt from user mode, 86 * or after the current trap/syscall if in system mode. 87 */ 88 89 #define need_resched(){ \ 90 want_resched++; \ 91 mtpr(AST_OK,PR_ASTLVL); \ 92 } 93 94 /* 95 * Notify the current process (p) that it has a signal pending, 96 * process as soon as possible. 97 */ 98 99 #define signotify(p) mtpr(AST_OK,PR_ASTLVL); 100 101 extern int want_resched; /* resched() was called */ 102 103 /* 104 * Give a profiling tick to the current process when the user profiling 105 * buffer pages are invalid. On the hp300, request an ast to send us 106 * through trap, marking the proc as needing a profiling tick. 107 */ 108 #define need_proftick(p) {(p)->p_flag |= P_OWEUPC; mtpr(AST_OK,PR_ASTLVL); } 109 110 /* 111 * This defines the I/O device register space size in pages. 112 */ 113 #define IOSPSZ ((64*1024) / VAX_NBPG) /* 64k == 128 pages */ 114 115 struct device; 116 117 /* Some low-level prototypes */ 118 int badaddr __P((caddr_t, int)); 119 void cpu_swapin __P((struct proc *)); 120 int hp_getdev __P((int, int, struct device **)); 121 int ra_getdev __P((int, int, int, struct device **)); 122 void dumpconf __P((void)); 123 void dumpsys __P((void)); 124 void swapconf __P((void)); 125 void disk_printtype __P((int, int)); 126 void disk_reallymapin __P((struct buf *, struct pte *, int, int)); 127 vaddr_t vax_map_physmem __P((paddr_t, int)); 128 void vax_unmap_physmem __P((vaddr_t, int)); 129 void ioaccess __P((vaddr_t, paddr_t, int)); 130 void iounaccess __P((vaddr_t, int)); 131 void findcpu(void); 132 #ifdef DDB 133 int kdbrint __P((int)); 134 #endif 135 #endif /* _KERNEL */ 136 #endif /* _VAX_CPU_H_ */ 137