sys/arch/cesfic/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.22 2009/03/14 14:45:58 dsl Exp $     */
   2
   3 /*
   4  * Copyright (c) 1982, 1990, 1993
   5  *      The Regents of the University of California.  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  *
  37  *      @(#)cpu.h       8.4 (Berkeley) 1/5/94
  38  */
  39 /*
  40  * Copyright (c) 1988 University of Utah.
  41  *
  42  * This code is derived from software contributed to Berkeley by
  43  * the Systems Programming Group of the University of Utah Computer
  44  * Science Department.
  45  *
  46  * Redistribution and use in source and binary forms, with or without
  47  * modification, are permitted provided that the following conditions
  48  * are met:
  49  * 1. Redistributions of source code must retain the above copyright
  50  *    notice, this list of conditions and the following disclaimer.
  51  * 2. Redistributions in binary form must reproduce the above copyright
  52  *    notice, this list of conditions and the following disclaimer in the
  53  *    documentation and/or other materials provided with the distribution.
  54  * 3. All advertising materials mentioning features or use of this software
  55  *    must display the following acknowledgement:
  56  *      This product includes software developed by the University of
  57  *      California, Berkeley and its contributors.
  58  * 4. Neither the name of the University nor the names of its contributors
  59  *    may be used to endorse or promote products derived from this software
  60  *    without specific prior written permission.
  61  *
  62  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  63  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  64  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  65  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  66  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  67  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  68  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  69  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  70  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  71  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  72  * SUCH DAMAGE.
  73  *
  74  * from: Utah $Hdr: cpu.h 1.16 91/03/25$
  75  *
  76  *      @(#)cpu.h       8.4 (Berkeley) 1/5/94
  77  */
  78
  79 #ifndef _MACHINE_CPU_H_
  80 #define _MACHINE_CPU_H_
  81
  82 #if defined(_KERNEL)
  83
  84 #if defined(_KERNEL_OPT)
  85 #include "opt_lockdebug.h"
  86 #endif
  87
  88 /*
  89  * Get common m68k CPU definitions.
  90  */
  91 #include <m68k/cpu.h>
  92
  93 #include <sys/cpu_data.h>
  94 struct cpu_info {
  95         struct cpu_data ci_data;        /* MI per-cpu data */
  96         cpuid_t ci_cpuid;
  97         int     ci_mtx_count;
  98         int     ci_mtx_oldspl;
  99         int     ci_want_resched;
 100 };
 101
 102 extern struct cpu_info cpu_info_store;
 103
 104 #define curcpu()        (&cpu_info_store)
 105
 106 /*
 107  * definitions of cpu-dependent requirements
 108  * referenced in generic code
 109  */
 110 #define cpu_number()                    0
 111
 112 void    cpu_proc_fork(struct proc *, struct proc *);
 113
 114 /*
 115  * Arguments to hardclock and gatherstats encapsulate the previous
 116  * machine state in an opaque clockframe.  One the hp300, we use
 117  * what the hardware pushes on an interrupt (frame format 0).
 118  */
 119 struct clockframe {
 120         u_short sr;             /* sr at time of interrupt */
 121         u_long  pc;             /* pc at time of interrupt */
 122         u_short vo;             /* vector offset (4-word frame) */
 123 } __attribute__((packed));
 124
 125 #define CLKF_USERMODE(framep)   (((framep)->sr & PSL_S) == 0)
 126 #define CLKF_PC(framep)         ((framep)->pc)
 127 #if 0
 128 /* We would like to do it this way... */
 129 #define CLKF_INTR(framep)       (((framep)->sr & PSL_M) == 0)
 130 #else
 131 /* but until we start using PSL_M, we have to do this instead */
 132 #define CLKF_INTR(framep)       (0)     /* XXX */
 133 #endif
 134
 135
 136 /*
 137  * Preempt the current process if in interrupt from user mode,
 138  * or after the current trap/syscall if in system mode.
 139  */
 140 #define cpu_need_resched(ci, flags)     \
 141         do { ci->ci_want_resched = 1; aston(); } while (/* CONSTCOND */0)
 142
 143 /*
 144  * Give a profiling tick to the current process when the user profiling
 145  * buffer pages are invalid.  On the hp300, request an ast to send us
 146  * through trap, marking the proc as needing a profiling tick.
 147  */
 148 #define cpu_need_proftick(l)    \
 149         do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */0)
 150
 151 /*
 152  * Notify the current process (p) that it has a signal pending,
 153  * process as soon as possible.
 154  */
 155 #define cpu_signotify(l)        aston()
 156
 157 extern int astpending;          /* need to trap before returning to user mode */
 158 #define aston() (astpending++)
 159
 160 #endif /* _KERNEL */
 161
 162 /*
 163  * CTL_MACHDEP definitions.
 164  */
 165 #define CPU_CONSDEV             1       /* dev_t: console terminal device */
 166 #define CPU_MAXID               2       /* number of valid machdep ids */
 167
 168 #ifdef _KERNEL
 169
 170 #ifndef M68040
 171 #define M68040
 172 #endif /* ! M68040 */
 173
 174 #ifndef M68K_MMU_MOTOROLA
 175 #define M68K_MMU_MOTOROLA
 176 #endif /* ! M68K_MMU_MOTOROLA */
 177
 178 struct fpframe;
 179
 180 /* locore.s functions */
 181 void    m68881_save(struct fpframe *);
 182 void    m68881_restore(struct fpframe *);
 183 int     suline(void *, void *);
 184 void    loadustp(int);
 185
 186 void    doboot(void)
 187         __attribute__((__noreturn__));
 188
 189 /* machdep.c functions */
 190 int     badaddr(void *);
 191 int     badbaddr(void *);
 192
 193 void kgdb_panic(void);
 194
 195 /* what is this supposed to do? i.e. how is it different than startrtclock? */
 196 #define enablertclock()
 197
 198 #endif /* _KERNEL */
 199
 200 #endif /* _MACHINE_CPU_H_ */