sys/arch/sun68k/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.20 2008/01/26 14:02:54 tsutsui Exp $ */
   2
   3 /*
   4  * Copyright (c) 1982, 1990 The Regents of the University of California.
   5  * 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  *      from: @(#)cpu.h 7.7 (Berkeley) 6/27/91
  37  *      cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp
  38  */
  39
  40 /*
  41  * Copyright (c) 1994 Gordon W. Ross
  42  * Copyright (c) 1993 Adam Glass
  43  * Copyright (c) 1988 University of Utah.
  44  *
  45  * This code is derived from software contributed to Berkeley by
  46  * the Systems Programming Group of the University of Utah Computer
  47  * Science Department.
  48  *
  49  * Redistribution and use in source and binary forms, with or without
  50  * modification, are permitted provided that the following conditions
  51  * are met:
  52  * 1. Redistributions of source code must retain the above copyright
  53  *    notice, this list of conditions and the following disclaimer.
  54  * 2. Redistributions in binary form must reproduce the above copyright
  55  *    notice, this list of conditions and the following disclaimer in the
  56  *    documentation and/or other materials provided with the distribution.
  57  * 3. All advertising materials mentioning features or use of this software
  58  *    must display the following acknowledgement:
  59  *      This product includes software developed by the University of
  60  *      California, Berkeley and its contributors.
  61  * 4. Neither the name of the University nor the names of its contributors
  62  *    may be used to endorse or promote products derived from this software
  63  *    without specific prior written permission.
  64  *
  65  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  66  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  67  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  68  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  69  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  70  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  71  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  72  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  73  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  74  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  75  * SUCH DAMAGE.
  76  *
  77  *      from: Utah Hdr: cpu.h 1.16 91/03/25
  78  *      from: @(#)cpu.h 7.7 (Berkeley) 6/27/91
  79  *      cpu.h,v 1.2 1993/05/22 07:58:17 cgd Exp
  80  */
  81
  82 #ifndef _CPU_H_
  83 #define _CPU_H_
  84
  85 #if defined(_KERNEL_OPT)
  86 #include "opt_lockdebug.h"
  87 #endif
  88
  89 #include <m68k/cpu.h>
  90
  91 #ifdef _KERNEL
  92
  93 /*
  94  * External definitions unique to sun68k cpu support.
  95  * These are the "public" declarations - those needed in
  96  * machine-independent source code.  The "private" ones
  97  * are in machdep.h (used only inside sys/arch/sun{2,3,68k}).
  98  *
  99  * Note that the name of this file is NOT meant to imply
 100  * that it has anything to do with Motorola CPU stuff.
 101  * The name "cpu" is historical, and used in the common
 102  * code to identify machine-dependent functions, etc.
 103  */
 104
 105 #include <sys/cpu_data.h>
 106 struct cpu_info {
 107         struct cpu_data ci_data;        /* MI per-cpu data */
 108         cpuid_t ci_cpuid;
 109         int     ci_mtx_count;
 110         int     ci_mtx_oldspl;
 111         int     ci_want_resched;
 112 };
 113
 114 extern struct cpu_info cpu_info_store;
 115
 116 #define curcpu()                        (&cpu_info_store)
 117
 118 /*
 119  * definitions of cpu-dependent requirements
 120  * referenced in generic code
 121  */
 122 #define cpu_number()                    0
 123
 124 void    cpu_proc_fork(struct proc *, struct proc *);
 125
 126 /*
 127  * Arguments to hardclock and gatherstats encapsulate the previous
 128  * machine state in an opaque clockframe.  On the sun68k, we use
 129  * what the locore.s glue puts on the stack before calling C-code.
 130  */
 131 struct clockframe {
 132         u_int   cf_regs[4];     /* d0,d1,a0,a1 */
 133         u_short cf_sr;          /* sr at time of interrupt */
 134         u_long  cf_pc;          /* pc at time of interrupt */
 135         u_short cf_vo;          /* vector offset (4-word frame) */
 136 } __attribute__((packed));
 137
 138 #define CLKF_USERMODE(framep)   (((framep)->cf_sr & PSL_S) == 0)
 139 #define CLKF_PC(framep)         ((framep)->cf_pc)
 140 #if 0
 141 /* We would like to do it this way... */
 142 #define CLKF_INTR(framep)       (((framep)->cf_sr & PSL_M) == 0)
 143 #else
 144 /* but until we start using PSL_M, we have to do this instead */
 145 #include <machine/intr.h>
 146 #define CLKF_INTR(framep)       (idepth > 1)    /* XXX */
 147 #endif
 148
 149 extern int astpending;   /* need to trap before returning to user mode */
 150 #define aston() (astpending = 1)
 151
 152 /*
 153  * Preempt the current process if in interrupt from user mode,
 154  * or after the current trap/syscall if in system mode.
 155  */
 156 #define cpu_need_resched(ci, flags)     \
 157         do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0)
 158
 159 /*
 160  * Give a profiling tick to the current process when the user profiling
 161  * buffer pages are invalid.  On the sun68k, request an ast to send us
 162  * through trap, marking the proc as needing a profiling tick.
 163  */
 164 #define cpu_need_proftick(l)    ((l)->l_pflag |= LP_OWEUPC, aston())
 165
 166 /*
 167  * Notify the current process (p) that it has a signal pending,
 168  * process as soon as possible.
 169  */
 170 #define cpu_signotify(l)        aston()
 171
 172 /*
 173  * For some reason the sparc has this prototype in its machine/cpu.h,
 174  * so for now we do the same.
 175  */
 176 void    fb_unblank(void);
 177
 178 /*
 179  * more stuff here for lack of a better place.
 180  */
 181
 182 #ifndef _SUN3X_
 183 #define M68K_VAC
 184 #endif
 185
 186 #endif  /* _KERNEL */
 187
 188 #include <m68k/sysctl.h>
 189 #endif /* _CPU_H_ */