sys/arch/x68k/include/cpu.h

   1 /*      $NetBSD: cpu.h,v 1.48 2009/01/17 09:20:46 isaki 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 _X68K_CPU_H_
  80 #define _X68K_CPU_H_
  81
  82 #if defined(_KERNEL)
  83
  84 /*
  85  * Exported definitions unique to x68k/68k cpu support.
  86  */
  87
  88 #if defined(_KERNEL_OPT)
  89 #include "opt_m680x0.h"
  90 #include "opt_lockdebug.h"
  91 #endif
  92
  93 /*
  94  * Get common m68k CPU definitions.
  95  */
  96 #include <m68k/cpu.h>
  97 #define M68K_MMU_MOTOROLA
  98
  99 /*
 100  * Get interrupt glue.
 101  */
 102 #include <machine/intr.h>
 103
 104 #include <sys/cpu_data.h>
 105 struct cpu_info {
 106         struct cpu_data ci_data;        /* MI per-cpu data */
 107         cpuid_t ci_cpuid;
 108         int     ci_mtx_count;
 109         int     ci_mtx_oldspl;
 110         int     ci_want_resched;
 111 };
 112
 113 extern struct cpu_info cpu_info_store;
 114
 115 #define curcpu()                        (&cpu_info_store)
 116
 117 /*
 118  * definitions of cpu-dependent requirements
 119  * referenced in generic code
 120  */
 121 #define cpu_number()                    0
 122
 123 void    cpu_proc_fork(struct proc *, struct proc *);
 124
 125 /*
 126  * Arguments to hardclock and gatherstats encapsulate the previous
 127  * machine state in an opaque clockframe.  One the x68k, we use
 128  * what the hardware pushes on an interrupt (frame format 0).
 129  */
 130 struct clockframe {
 131         u_short sr;             /* sr at time of interrupt */
 132         u_long  pc;             /* pc at time of interrupt */
 133         u_short vo;             /* vector offset (4-word frame) */
 134 };
 135
 136 #define CLKF_USERMODE(framep)   (((framep)->sr & PSL_S) == 0)
 137 #define CLKF_PC(framep)         ((framep)->pc)
 138 #if 0
 139 /* We would like to do it this way... */
 140 #define CLKF_INTR(framep)       (((framep)->sr & PSL_M) == 0)
 141 #else
 142 /* but until we start using PSL_M, we have to do this instead */
 143 #define CLKF_INTR(framep)       (0)     /* XXX */
 144 #endif
 145
 146
 147 /*
 148  * Preempt the current process if in interrupt from user mode,
 149  * or after the current trap/syscall if in system mode.
 150  */
 151 #define cpu_need_resched(ci, flags)     \
 152         do { (ci)->ci_want_resched = 1; aston(); } while (/* CONSTCOND */ 0)
 153
 154 /*
 155  * Give a profiling tick to the current process when the user profiling
 156  * buffer pages are invalid.  On the x68k, request an ast to send us
 157  * through trap, marking the proc as needing a profiling tick.
 158  */
 159 #define cpu_need_proftick(l)    \
 160         do { (l)->l_pflag |= LP_OWEUPC; aston(); } while (/* CONSTCOND */ 0)
 161
 162 /*
 163  * Notify the current process (p) that it has a signal pending,
 164  * process as soon as possible.
 165  */
 166 #define cpu_signotify(l)        aston()
 167
 168 extern int astpending;          /* need to trap before returning to user mode */
 169 #define aston() (astpending++)
 170
 171 #endif /* _KERNEL */
 172
 173 /*
 174  * CTL_MACHDEP definitions.
 175  */
 176 #define CPU_CONSDEV             1       /* dev_t: console terminal device */
 177 #define CPU_MAXID               2       /* number of valid machdep ids */
 178
 179 /*
 180  * The rest of this should probably be moved to <machine/x68kcpu.h>
 181  * although some of it could probably be put into generic 68k headers.
 182  */
 183
 184 #ifdef _KERNEL
 185 extern int machineid;
 186 extern char *intiobase;
 187 extern char *intiolimit;
 188
 189 /* fpu.c functions */
 190 int     fpu_probe(void);
 191
 192 /* machdep.c functions */
 193 void    dumpsys(void);
 194
 195 /* locore.s functions */
 196 struct fpframe;
 197 int     suline(void *, void *);
 198 void    loadustp(int);
 199 void    m68881_save(struct fpframe *);
 200 void    m68881_restore(struct fpframe *);
 201
 202 /* machdep.c functions */
 203 int     badaddr(volatile void*);
 204 int     badbaddr(volatile void*);
 205
 206 #endif
 207
 208 /* physical memory sections */
 209 #define INTIOBASE       (0x00C00000)
 210 #define INTIOTOP        (0x01000000)
 211
 212 /*
 213  * Internal IO space:
 214  *
 215  * Ranges from 0xC00000 to 0x1000000 (IIOMAPSIZE).
 216  *
 217  * Internal IO space is mapped in the kernel from ``IODEVbase'' to
 218  * ``intiolimit'' (defined in locore.s).  Since it is always mapped,
 219  * conversion between physical and kernel virtual addresses is easy.
 220  */
 221 #define IIOV(pa)        ((u_int)(pa) - INTIOBASE + (u_int)intiobase)
 222 #define IIOP(va)        ((u_int)(va) - (u_int)intiobase + INTIOBASE)
 223 #define IIOPOFF(pa)     ((int)(pa)-INTIOBASE)
 224 #define IIOMAPSIZE      btoc(INTIOTOP-INTIOBASE)        /* 4mb */
 225
 226 #endif /* _X68K_CPU_H_ */